A rotary dual-shaft inner wall spraying machine

Abstract

This application relates to the field of spraying equipment technology, specifically disclosing a rotary dual-axis inner wall spraying machine. The equipment includes a chassis, with a spraying assembly driven by a lifting module in the middle and a turntable on top. A revolution drive assembly passes through the chassis to drive the turntable to rotate. The turntable has a clearance hole in the center to avoid the lifting module, and multiple bottle fixing assemblies are evenly distributed around its perimeter. A rotation drive assembly is located at the spraying station, driving the fixing assemblies of the aligned spraying assembly to rotate. An integrated electrical control cabinet within the chassis centrally controls all components. During operation, the lifting module drives the spraying assembly to extend into the bottle, and the rotation drive assembly rotates the bottle to achieve uniform spraying. The revolution drive assembly periodically switches the turntable positions. This application integrates multiple workstations on a rotating plane via a turntable, reducing the floor space compared to a linear assembly line, making it particularly suitable for space-constrained workshops. The continuous turntable rotation eliminates the downtime for loading and unloading traditional single-station equipment, achieving fully automated assembly line operation and improving production efficiency.

Description

Technical Field

[0001] This application relates to the technical field of spraying equipment, and more specifically, to a rotary dual-shaft inner wall spraying machine. Background Technology

[0002] With the increasing demands for packaging bottle quality from industries such as food, pharmaceuticals, and cosmetics, internal bottle coating, such as anti-corrosion layers, barrier layers, and functional coatings, has become a key process. Traditional internal bottle coating processes mainly rely on two methods:

[0003] Manual spraying: Operators hold spray guns and insert them into the bottle to work, which has problems such as low efficiency, poor coating uniformity, harmful solvents that endanger health, and difficulty in meeting the needs of large-scale production.

[0004] Semi-automatic single-station equipment: Bottles are held in place by fixed clamps, and a lifting mechanism drives the spray gun to enter and exit the bottle for spraying. However, the machine must be stopped to load and unload after each bottle is completed, resulting in insufficient equipment utilization and severely limited production capacity.

[0005] In recent years, some companies have attempted to achieve continuous production using linear production lines: bottles pass sequentially through the spraying stations via conveyor belts, where spraying is performed by robotic arms or lifting mechanisms. However, linear layouts require long-distance conveying areas, resulting in large equipment footprints; multi-station mechanical actions require precise timing control, leading to poor system stability; and conveyor belt vibrations can easily cause misalignment between the bottle mouth and the spray gun, resulting in missed spraying or collisions with the spray gun. Utility Model Content

[0006] To address the limitations in production capacity and poor reliability of internal spraying in related technologies, this application provides a rotary dual-axis internal wall spraying machine with compact space, continuous operation, and precise positioning, thereby overcoming the constraints of existing technologies on production efficiency and coating consistency.

[0007] A rotary dual-axis inner wall spraying machine includes a chassis, a lifting module in the middle of the chassis, a spraying component driven by the lifting module, a turntable on the top of the chassis, a revolution drive component inside the chassis, the revolution drive component passing through the chassis and connected to the turntable to drive the turntable to rotate, a clearance hole in the middle of the turntable to avoid the lifting module, and several fixing components for positioning and fixing bottles around the top periphery of the turntable, the fixing components being evenly arranged along the center of the turntable, so that the rotation of the turntable moves all the fixing components to be below the spraying component and aligned with it, the chassis also has a self-rotation drive component, the self-rotation drive component being positioned to align with the spraying component and acting on the fixing components aligned with the spraying component to drive the fixed components to rotate, the chassis also integrates an electrical control cabinet, the lifting module, the revolution drive component and the self-rotation drive component are all electrically connected to the electrical control cabinet.

[0008] Preferably, the lifting module is a lead screw module.

[0009] Preferably, the spraying assembly includes an L-shaped arm, an adjusting seat, a fixing rod, and a spray gun. The bottom section of the L-shaped arm is connected to the moving part of the lifting module. The upper section of the L-shaped arm extends towards the periphery of the turntable and has a strip groove extending towards the periphery of the turntable. The adjusting seat is movably disposed in the strip groove and locks and fixes itself to the L-shaped arm. The fixing rod is fixedly connected to the adjusting seat. The spray gun is fixed to the fixing rod, and the number of spray guns is at least one. Multiple spray guns are arranged around the center of the turntable.

[0010] Preferably, the adjusting seat includes two clamping plates, which are located on opposite sides of the upper section of the L-shaped arm. Both clamping plates are screwed together with a bolt, which passes through the strip hole. One end of the fixing rod is fixedly connected to one of the clamping plates.

[0011] Preferably, the number of lifting modules is at least two, and the number of spraying components is correspondingly two.

[0012] Preferably, the revolution drive assembly includes a cam divider and a first servo motor, wherein the output shaft of the cam divider is fixedly connected to the center of the turntable, and the first servo motor is connected to the input shaft of the cam divider.

[0013] Preferably, the fixing component includes a mounting base, a rotating shaft, and a positioning fixture. The mounting base is fixed to the periphery of the turntable. The rotating shaft is rotatably connected to the mounting base and passes through the bottom surface of the turntable. The positioning fixture is fixed to the top of the rotating shaft for positioning and fixing the bottle. A friction wheel is provided at the bottom of the rotating shaft. The self-rotation drive component is used to drive the friction wheel to rotate through friction.

[0014] Preferably, the self-rotating drive assembly includes a fixed base, a synchronous pulley, and a second servo motor. The fixed base is located below the turntable, the second servo motor is fixed to one side of the fixed base, and there are two synchronous pulleys. One synchronous pulley is mounted on the drive shaft of the second servo motor, and the other synchronous pulley is rotatably mounted on the side of the fixed base away from the second servo motor. A belt is mounted on both synchronous pulleys. When the positioning assembly is moved to the position of the spraying assembly by the rotation of the turntable, the friction wheel at the bottom of the rotating shaft makes frictional contact with the belt.

[0015] In summary, this application includes at least one of the following beneficial technical effects:

[0016] 1. The lifting module drives the spraying assembly to raise and lower, allowing the spray nozzle to extend from the bottle for spraying. A turntable with multiple fixed components and a rotating drive mechanism rotates the turntable, enabling multiple bottles to be sprayed in a continuous flow. A self-rotating drive mechanism drives the fixed components to rotate, ensuring even spraying. The turntable integrates multiple workstations on a single rotating plane, reducing the footprint compared to linear production lines which require long-distance transport areas, making it particularly suitable for space-constrained workshops. The turntable multi-station design enables continuous production: compared to traditional single-station equipment requiring intermittent "stop-load" operations, this solution achieves fully automated production line operation, eliminating downtime and improving production efficiency.

[0017] 2. The screw module ensures the stability of the spray gun entering and exiting the bottle vertically, avoiding human operation errors. The L-shaped arm's slot design allows the adjustment seat to move laterally and lock. The spray gun position is adjustable to adapt to bottles of different diameters. Multiple spray guns are arranged in a ring to achieve simultaneous spraying of multiple bottles or the inner walls of complex bottle shapes, with strong scalability.

[0018] 3. The cam divider provides high rigidity indexing positioning and strong impact resistance, ensuring that the bottle is accurately positioned at the spraying station. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a rotary dual-shaft inner wall spraying machine according to this embodiment.

[0020] Figure 2 This is a schematic diagram of the connection structure between the lifting module and the spraying assembly in this embodiment.

[0021] Figure 3 This is a schematic diagram of the structure of the fixing component in this embodiment.

[0022] Figure 4 This is a schematic diagram of the self-rotation drive component in this embodiment.

[0023] Figure 5 This is a schematic diagram of a rotary dual-shaft inner wall spraying machine with a protective shell according to this embodiment.

[0024] Reference numerals: 1. Chassis; 2. Electrical control cabinet; 3. Lifting module; 4. Spraying assembly; 41. L-shaped arm; 411. Strip groove; 42. Adjusting seat; 421. Clamping plate; 422. Bolt; 43. Fixing rod; 44. Spray gun; 5. Turntable; 6. Revolution drive assembly; 61. Cam divider; 62. First servo motor; 7. Fixing assembly; 71. Mounting seat; 72. Rotating shaft; 721. Friction wheel; 73. Positioning fixture; 731. Body; 732. Positioning groove; 733. Mounting sleeve; 8. Rotation drive assembly; 81. Fixing seat; 82. Second servo motor; 83. Synchronous pulley; 84. Pressure roller; 9. Protective shell; 91. Clearance groove. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0026] Reference Figure 1A rotary dual-axis inner wall spraying machine includes a chassis 1, which serves as the main installation structure. An electrical control cabinet 2 is integrated inside the chassis 1 as the control core. A lifting module 3 is vertically installed in the middle of the chassis 1. The lifting module 3 is connected to the spraying component 4 to drive the spraying component 4 to lift. The lifting module 3 is a lead screw module, which enables the spraying component 4 to lift quickly and move accurately, thus facilitating the achievement of better spraying precision. A turntable 5 is installed on the top of the chassis 1. A revolution drive assembly 6 is installed inside the chassis 1. The revolution drive assembly 6 passes through the chassis 1 and is connected to the turntable 5 to drive the turntable 5 to rotate. A clearance hole is provided in the middle of the turntable 5 to avoid the lifting module 3. Several fixing components 7 are provided around the top surface of the turntable 5. The fixing components 7 are used to fix the bottle body and are evenly arranged along the center of the turntable 5. By rotating the turntable 5, the fixing components 7 are aligned with the spraying assembly 4 one by one. The lifting module 3 drives the spraying assembly 4 to rise and fall, so that the spraying assembly 4 can be inserted into the bottle body to perform spraying operation inside the bottle body, or extended out of the bottle body to end the spraying operation. A self-rotation drive assembly 8 is also provided on the chassis 1. The self-rotation drive assembly 8 is located below the turntable 5 and is positioned to align with the spraying assembly 4. The self-rotation drive assembly 8 acts on the fixing components 7 aligned with the spraying assembly 4 to drive the fixing components 7 to rotate, so that the bottle body rotates and the spraying of the bottle body is more uniform.

[0027] Reference Figure 1 and Figure 2 Furthermore, the spraying assembly 4 includes an L-shaped arm 41, an adjusting seat 42, a fixing rod 43, and a spray gun 44. The bottom section of the L-shaped arm 41 is connected to the moving part of the lifting module 3. The upper section of the L-shaped arm 41 extends towards the periphery of the turntable 5, and a strip groove 411 extending towards the periphery of the turntable 5 is provided on it. The adjusting seat 42 is movably disposed in the strip groove 411 and locks and fixes with the L-shaped arm 41. The fixing rod 43 is fixedly connected to the adjusting seat 42. The spray gun 44 is fixed on the fixing rod 43, and there are two spray guns 44. The two spray guns 44 are arranged around the center of the turntable 5. The two spray guns 44 can spray two bottles at the same time, improving the spraying efficiency. Furthermore, there are two lifting modules 3, and correspondingly two spraying components 4 of the above structure. The two spraying components 4 can spray different vertical surfaces of the same inner wall of the bottle, so as to reduce the need for equipment debugging when the inner wall of the bottle has multiple surfaces, and to spray two surfaces of the bottle inside after one rotation of the turntable 5, thereby further improving the spraying efficiency.

[0028] Reference Figure 2Furthermore, the adjusting seat 42 includes two clamping plates 421, which are located on opposite sides of the upper section of the L-shaped arm 41. The two clamping plates 421 are screwed together with bolts 422, which pass through the strip hole. One end of the fixing rod 43 is fixedly connected to one of the clamping plates 421. Tightening the bolts 422 allows the two clamping plates 421 to clamp the L-shaped arm 41, thus connecting and fixing the adjusting seat 42 to the L-shaped arm 41. Loosening the bolts 422 allows the two clamping plates 421 to release the L-shaped arm 41, enabling the adjusting seat 42 to move along the extension direction of the strip groove 411, thereby adjusting the position of the spray gun 44 and adapting to bottles of different diameters, resulting in higher equipment compatibility.

[0029] Reference Figure 1 and Figure 3 Furthermore, the fixing component 7 includes a mounting base 71, a rotating shaft 72, and a positioning fixture 73. The mounting base 71 is fixed to the edge of the turntable 5, and the rotating shaft 72 passes vertically through the turntable 5 and is rotatably connected to the mounting base 71 through a bearing. The positioning fixture 73 consists of a body 731, a positioning groove 732, and a mounting sleeve 733. The top of the body 731 is recessed with a positioning groove 732 that matches the shape of the bottle, and the bottle is positioned through the positioning groove 732. The bottom of the body 731 is provided with a mounting sleeve 733, which is fixed to the top of the rotating shaft 72 through an interference fit. The bottom end of the rotating shaft 72 extends to the bottom of the turntable 5 and is equipped with a friction wheel 721. The self-rotation drive component 8 is used to drive the friction wheel 721 to rotate through friction, and to synchronously drive the four rotating shafts 72 aligned with the four spray guns 44 to rotate.

[0030] Reference Figure 1 Furthermore, the revolution drive assembly 6 includes a cam divider 61 and a first servo motor 62 (not shown in the figure). The output shaft of the cam divider 61 is fixedly connected to the center of the turntable 5, and the first servo motor 62 is connected to the input shaft of the cam divider 61. The cam divider 61 provides high rigidity indexing positioning and strong impact resistance, ensuring that the bottle is accurately stopped at the spraying station.

[0031] Reference Figure 1 and Figure 4Furthermore, the self-rotating drive assembly 8 is located inside the housing 1 directly below the spraying station. It includes a fixed base 81, a second servo motor 82, a synchronous pulley 83, and a pressure roller 84. There are two synchronous pulleys 83. The fixed base 81 is mounted on the base plate below the turntable 5. The second servo motor 82 is fixed to the side of the fixed base 81, and its drive shaft is mounted on one synchronous pulley 83. The other synchronous pulley 83 is rotatably mounted on the other side of the fixed base 81. A belt is sleeved between the two synchronous pulleys 83, and a pressure roller 84 is set above the belt. The pressure roller 84 is rotatably connected to the fixed base 81 and presses the belt into a working plane. When the turntable 5 carries the fixed assembly 7 to the spraying station, the friction wheel 721 comes into contact with the surface of the tensioned belt after the turntable 5 stops. Through belt transmission and friction with the friction wheel 721, the rotating shaft 72 is driven to rotate. The rotation of the rotating shaft 72 drives the positioning fixture 73 to rotate, and the rotation of the positioning fixture 73 drives the bottle to rotate.

[0032] Reference Figure 5 Furthermore, both lifting modules 3 are covered by a protective shell 9. The protective shell 9 is connected to the housing 1 by bolts 422. The protective shell 9 is provided with two clearance slots 91, which are used to avoid the two L-shaped arms 41 respectively. The protective shell 9 protects the lifting module 3, reduces dirt on the lifting module 3, and reduces employees' contact with the moving parts of the lifting module 3, thereby reducing the possibility of employee injury.

[0033] The lifting module 3, the first servo motor 62, and the second servo motor 82 are all electrically connected to the electrical control cabinet 2 and are controlled by the electrical control cabinet 2 to operate.

[0034] The implementation principle of this rotary dual-axis inner wall spraying machine is as follows: The operator places the bottle into the positioning groove 732 of the positioning fixture 73. The revolution drive assembly 6 drives the turntable 5 to rotate in increments, causing the bottles to flow sequentially to the spraying station. After stopping, the lifting module 3 drives the spray gun 44 to descend and extend into the bottle. At the same time, the second servo motor 82 drives the belt through the synchronous pulley 83. The friction between the belt and the friction wheel 721 drives the bottle to rotate around its axis. Multiple spray guns 44 spray paint synchronously. After completing the uniform spraying of the inner wall, the spray gun 44 rises and exits the bottle, and the turntable 5 continues to rotate to the next station. This process achieves continuous operation without stopping the machine for loading and unloading, and the turntable 5 layout significantly reduces the equipment's footprint. The electrical control cabinet 2 centrally controls the coordinated actions of the lifting module 3, the revolution drive, and the rotation drive to ensure spraying accuracy and stability.

[0035] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carousel dual axis internal wall sprayer characterized by: The device includes a chassis (1), a lifting module (3) in the middle of the chassis (1), a spraying assembly (4) connected to the lifting module (3), a turntable (5) on the top of the chassis (1), a revolution drive assembly (6) inside the chassis (1), the revolution drive assembly (6) passing through the chassis (1) and connected to the turntable (5) to drive the turntable (5) to rotate, a clearance hole in the middle of the turntable (5) to avoid the lifting module (3), and several fixing components (7) for positioning and fixing the bottle body are arranged around the top surface of the turntable (5). The components are evenly arranged in the center. By rotating the turntable (5), several fixed components (7) are moved to the bottom of the spraying component (4) and aligned with it. The chassis (1) is also provided with a self-rotation drive component (8). The self-rotation drive component (8) is positioned to align with the spraying component (4) and acts on the fixed component (7) aligned with the spraying component (4) to drive the fixed component (7) to rotate. The chassis (1) is also integrated with an electrical control cabinet (2). The lifting module (3), the revolution drive component (6) and the self-rotation drive component (8) are all electrically connected to the electrical control cabinet (2).

2. A carousel dual-axis internal wall painting machine according to claim 1, characterized in that: The lifting module (3) is a lead screw module.

3. A carousel dual axis internal wall painting machine according to claim 2, characterised in that: The spraying assembly (4) includes an L-shaped arm (41), an adjusting seat (42), a fixing rod (43), and a spray gun (44). The bottom section of the L-shaped arm (41) is connected to the moving part of the lifting module (3). The upper section of the L-shaped arm (41) extends towards the periphery of the turntable (5) and has a strip groove (411) extending towards the periphery of the turntable (5). The adjusting seat (42) is movably disposed in the strip groove (411) and locks and fixes with the L-shaped arm (41). The fixing rod (43) is fixedly connected to the adjusting seat (42). The spray gun (44) is fixed on the fixing rod (43), and the number of spray guns (44) is at least one. Multiple spray guns (44) are arranged around the center of the turntable (5).

4. A carousel dual-axis internal wall painting machine according to claim 3, wherein: The adjusting seat (42) includes two clamping plates (421), which are located on opposite sides of the upper section of the L-shaped arm (41). The two clamping plates (421) are screwed together with a bolt (422), which passes through the strip groove. One end of the fixing rod (43) is fixedly connected to one of the clamping plates (421).

5. The carousel dual-axis internal wall sprayer of claim 1, wherein: The number of lifting modules (3) is at least two, and the number of spraying components (4) is correspondingly two.

6. A carousel dual axis internal wall sprayer as claimed in claim 1, wherein: The revolution drive assembly (6) includes a cam divider (61) and a first servo motor (62). The output shaft of the cam divider (61) is fixedly connected to the center of the turntable (5), and the first servo motor (62) is connected to the input shaft of the cam divider (61).

7. The carousel dual-axis internal wall sprayer of claim 1, wherein: The fixing component (7) includes a mounting base (71), a rotating shaft (72), and a positioning fixture (73). The mounting base (71) is fixed to the periphery of the turntable (5). The rotating shaft (72) is rotatably connected to the mounting base (71) and passes through the bottom surface of the turntable (5). The positioning fixture (73) is fixed to the top of the rotating shaft (72) for positioning and fixing the bottle. A friction wheel (721) is provided at the bottom of the rotating shaft (72). The self-rotation drive component (8) is used to drive the friction wheel (721) to rotate through friction.

8. A carousel dual axis internal wall painting machine according to claim 7, characterised in that: The self-rotating drive assembly (8) includes a fixed base (81), a synchronous pulley (83), and a second servo motor (82). The fixed base (81) is located below the turntable (5). The second servo motor (82) is fixed to one side of the fixed base (81). There are two synchronous pulleys (83). One synchronous pulley (83) is set on the drive shaft of the second servo motor (82), and the other synchronous pulley (83) is rotatably set on the side of the fixed base (81) away from the second servo motor (82). A belt is sleeved on both synchronous pulleys (83). When the positioning assembly is moved to the position of the spraying assembly (4) by the rotation of the turntable (5), the friction wheel (721) at the bottom of the rotating shaft (72) rubs against the belt.

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