Positioning mechanism for painting

Abstract

This utility model discloses a positioning mechanism for spray painting, belonging to the field of spray painting positioning. It includes a placement frame, with a conveying mechanism rotatably mounted inside the frame. Positioning structures are installed on both sides of the placement frame, and a telescopic rod is installed inside the clamping surface of each positioning structure. An auxiliary plate is installed at the moving end of the telescopic rod. The telescopic rod, auxiliary plate, and adjustment mechanism work together. The telescopic rod's moving end extends the auxiliary plate upwards. Based on the workpiece's weight distribution and bottom shape, the support height and position of the auxiliary plate are adjusted to ensure precise contact between the auxiliary plate and the bottom of the workpiece. This effectively disperses the lateral clamping force on the workpiece, preventing minor deformation due to the workpiece's own weight or concentrated clamping force. The adjustment mechanism works synchronously, adaptively filling the gap between the positioning structure and the workpiece's side, enhancing the tightness of the side clamping, thereby preventing workpiece deformation and improving the accuracy of subsequent spray painting.

Description

Technical Field

[0001] This utility model relates to the field of spray painting positioning technology, specifically a positioning mechanism for spray painting. Background Technology

[0002] In industrial production, many workpieces need to be painted to achieve aesthetic purposes, rust prevention, etc. During the painting process, in order to ensure the accuracy and quality of the painting, a positioning mechanism is needed to accurately position the workpiece to prevent it from shifting during the painting process.

[0003] The positioning mechanism can fix the workpiece to be painted. When positioning a heavy workpiece, its own weight will cause the workpiece to bear a large load during the positioning process. If the workpiece is fixed by relying solely on the lateral clamping force, the interaction between the clamping force and the workpiece's weight will easily generate uneven stress distribution inside the workpiece. This stress will cause slight deformation in the weak parts of the workpiece, changing the relative position of the workpiece surface. Since painting operations have high requirements for the dimensional accuracy of the workpiece surface, once there is slight deformation of the workpiece, the adhesion position and thickness of the paint layer will deviate during painting, which will affect the dimensional accuracy of the workpiece after painting. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] This utility model provides a positioning mechanism for spray painting, which aims to solve the problems mentioned in the background art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a positioning mechanism for spray painting, comprising a placement frame, a conveying mechanism rotatably mounted inside the placement frame, positioning structures mounted on both sides of the placement frame, a telescopic rod mounted inside the clamping surface of the positioning structure, an auxiliary plate mounted on the moving end of the telescopic rod, and an adjustment mechanism mounted inside the clamping surface of the positioning structure.

[0008] As a preferred technical solution of this application, the conveying mechanism includes a conveying roller assembly arranged horizontally inside the placement frame, and a protective sleeve is provided on the outside of the conveying roller assembly.

[0009] As a preferred technical solution of this application, the positioning structure includes threaded rod assemblies disposed on both sides of the outer wall of the placement frame, a transmission rod is driven on the outer side of the threaded rod assembly, a positioning plate is installed on the end of the transmission rod near the placement frame, and a telescopic rod is connected inside the positioning plate.

[0010] As a preferred technical solution of this application, a sensor is installed at one end of the side of the positioning plate, and the sensor is used to monitor the moving position of the workpiece.

[0011] As a preferred technical solution of this application, a limiting rod is provided on the outer surface of the transmission rod near the positioning plate, and a limiting seat is installed on the outer side of the top of the placement frame near the limiting rod, and the limiting rod moves inside the limiting seat.

[0012] As a preferred technical solution of this application, a fixing ring is installed on the side of the limiting seat, and a cleaning block is provided on the inner ring of the fixing ring.

[0013] As a preferred technical solution of this application, the adjustment mechanism includes an airbag disposed inside the positioning plate, and the outer surface of the airbag is provided with a protective layer.

[0014] (III) Beneficial Effects

[0015] 1. This utility model uses a telescopic rod, an auxiliary plate, and an adjustment mechanism in conjunction. The telescopic rod's moving end drives the auxiliary plate to extend upwards. Based on the weight distribution and bottom shape of the workpiece, the support height and position of the auxiliary plate are adjusted to ensure precise contact between the auxiliary plate and the bottom of the workpiece. This effectively disperses the lateral clamping force on the workpiece, preventing minor deformation caused by the workpiece's own weight or concentrated clamping force. The adjustment mechanism works synchronously, adaptively filling the gap between the positioning structure and the side of the workpiece, enhancing the tightness of the side clamping, thereby preventing workpiece deformation and improving the accuracy of subsequent painting.

[0016] 2. This utility model uses an airbag and a protective layer in combination. After the positioning plate initially contacts the workpiece surface, an appropriate amount of gas is injected into the airbag, causing it to expand adaptively. The expanded airbag pushes the contact surface of the positioning plate to fit against the workpiece surface. Through its own flexible deformation, it fills the gap between the positioning plate and the workpiece, ensuring large-area and uniform contact between the positioning plate and the workpiece surface. This avoids local stress concentration caused by rigid contact, making it particularly suitable for positioning irregularly shaped workpieces or workpieces with uneven surfaces. It effectively prevents deformation or surface damage to the workpiece during clamping. At the same time, the protective layer on the outer surface of the airbag provides protection and enhances the friction between the airbag and the workpiece surface, preventing relative sliding between the workpiece and the positioning plate during positioning. This allows for better positioning of irregularly shaped workpieces. Attached Figure Description

[0017] Figure 1 This is a side perspective view of the present invention;

[0018] Figure 2 This is a front perspective view of the present utility model;

[0019] Figure 3This is a schematic diagram of the positioning plate part of this utility model;

[0020] Figure 4 This utility model Figure 2 A magnified schematic diagram of the structure of part A in the diagram;

[0021] Figure 5 This is a schematic diagram of the conveying mechanism of this utility model.

[0022] In the diagram: 1. Placement rack; 2. Conveying mechanism; 201. Conveying roller assembly; 202. Protective sleeve; 3. Positioning structure; 301. Threaded rod assembly; 302. Transmission rod; 3021. Limiting rod; 3022. Limiting seat; 3023. Fixing ring; 3024. Cleaning block; 303. Positioning plate; 4. Telescopic rod; 401. Auxiliary plate; 5. Adjustment mechanism; 501. Airbag; 502. Protective layer; 6. Sensor. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments;

[0025] Example:

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Please refer to the accompanying drawings. Figures 1 to 5 Please refer to the positioning mechanism for spray painting provided in this application. Figure 1 , Figure 2 and Figure 3 The present invention includes a positioning mechanism for spraying paint, comprising a placement frame 1, a conveying mechanism 2 rotatably mounted inside the placement frame 1, positioning structures 3 mounted on both sides of the placement frame 1, a telescopic rod 4 mounted inside the clamping surface of the positioning structure 3, an auxiliary plate 401 mounted on the moving end of the telescopic rod 4, and an adjustment mechanism 5 mounted inside the clamping surface of the positioning structure 3.

[0027] Specifically, the placement frame 1 provides mounting support for the conveying mechanism 2 and the positioning structure 3. When the workpiece to be painted is placed on the conveying mechanism 2 inside the placement frame 1, the conveying mechanism 2 moves the workpiece to the positioning area through rotation. When the workpiece reaches the positioning area, the positioning structures 3 on both sides of the placement frame 1 start working. The positioning structures 3 move closer to the center from both sides of the workpiece, and their clamping surfaces gradually contact the workpiece surface, initially achieving lateral positioning of the workpiece. Then, the telescopic rod 4 works, and its moving end drives the auxiliary plate 401 to extend upward. According to the weight distribution and bottom shape of the workpiece, the support height and position of the auxiliary plate 401 are adjusted so that the auxiliary plate 401 accurately contacts the bottom of the workpiece. This can effectively disperse the lateral clamping force on the workpiece and avoid the workpiece from undergoing slight deformation due to its own weight or concentrated clamping force. It is especially suitable for workpieces with large weight or fragile structure. At the same time, the adjustment mechanism 5 inside the clamping surface of the positioning structure 3 works synchronously, filling the gap between the positioning structure 3 and the side of the workpiece through its own adaptive adjustment, enhancing the tightness of the side clamping.

[0028] Please refer to this carefully. Figure 1 and Figure 5 The conveying mechanism 2 includes a conveying roller assembly 201 arranged horizontally inside the placement frame 1, and a protective sleeve 202 is provided on the outside of the conveying roller assembly 201.

[0029] Specifically, to achieve the conveying and positioning of the workpiece to be painted, when the workpiece is placed on the conveyor roller assembly 201, the workpiece is moved from the entrance end of the placement rack 1 to the positioning area or the painting area by the working rotation of the conveyor roller assembly 201, ensuring that the workpiece can accurately enter the subsequent positioning process. The protective sleeve 202 set on the outside of the conveyor roller assembly 201 plays multiple protective roles. It can prevent the paint mist splashed during the painting process from directly adhering to the surface of the conveyor roller assembly 201, avoid the paint mist from affecting the rotational flexibility of the conveyor roller after solidification, reduce the problem of unstable conveying speed caused by paint layer accumulation, and at the same time, it can buffer the impact force when the workpiece is placed to prevent the workpiece surface from being scratched by the conveyor roller.

[0030] Please refer to this carefully. Figure 2 and Figure 3 The positioning structure 3 includes threaded rod assemblies 301 disposed on both sides of the outer wall of the placement frame 1. A transmission rod 302 is installed on the outer side of the threaded rod assembly 301. A positioning plate 303 is installed at the end of the transmission rod 302 near the placement frame 1. A telescopic rod 4 is connected inside the positioning plate 303.

[0031] Please refer to this carefully. Figure 3 A sensor 6 is installed on one end of the side of the positioning plate 303. The sensor 6 is used to monitor the movement position of the workpiece.

[0032] Please refer to this carefully. Figure 2 and Figure 4A limiting rod 3021 is provided on the outer surface of the transmission rod 302 near the positioning plate 303. A limiting seat 3022 is installed on the outer side of the top of the placement frame 1 near the limiting rod 3021. The limiting rod 3021 moves to be located inside the limiting seat 3022.

[0033] Please refer to this carefully. Figure 4 A retaining ring 3023 is installed on the side of the limiting seat 3022, and a cleaning block 3024 is provided on the inner ring of the retaining ring 3023.

[0034] Specifically, to achieve workpiece positioning, when the conveying mechanism 2 moves the workpiece to the vicinity of the positioning area, the sensor 6 on the side of the positioning plate 303 first detects the movement position of the workpiece and feeds the signal back to the control unit, triggering the positioning action. The threaded rod assembly 301 converts the rotational motion into the linear motion of the transmission rod 302. Under the action of the thread, the transmission rod 302 moves in a direction closer to or away from the center of the placement frame 1, thereby driving the positioning plate 303 at one end to move synchronously. The positioning plates 303 on both sides cooperate with each other to apply clamping force from both sides of the workpiece, thereby achieving lateral positioning of the workpiece. During the movement of the transmission rod 302, the limiting rod 3021 on its outer surface is always within the limiting seat 3022 at the top of the placement frame 1. The sliding mechanism of the limiting seat 3022 restricts the movement trajectory of the limiting rod 3021, preventing the transmission rod 302 from shifting or rotating due to force, ensuring that the positioning plate 303 moves smoothly along the preset direction, and further improving the positioning accuracy. In addition, the fixing ring 3023 on the side of the limiting seat 3022 and the cleaning block 3024 on the inner ring play an auxiliary protective role. When the limiting rod 3021 reciprocates within the limiting seat 3022, the cleaning block 3024 makes close contact with the surface of the limiting rod 3021, which can scrape off impurities such as paint mist and dust adhering to the limiting rod 3021, preventing impurities from entering the interior of the limiting seat 3022 and affecting the limiting effect. At the same time, it reduces the wear between the limiting rod 3021 and the limiting seat 3022, extending the service life of the components.

[0035] Please refer to this carefully. Figure 3 The adjustment mechanism 5 includes an airbag 501 disposed inside the positioning plate 303, and the outer surface of the airbag 501 is provided with a protective layer 502.

[0036] Specifically, to achieve flexible adjustment of the contact state between the positioning plate 303 and the workpiece, and to further improve positioning adaptability and workpiece protection, when the positioning plate 303 moves closer to the workpiece under the drive of the transmission rod 302, an airbag 501 is built inside the positioning plate 303. This airbag can be inflated or deflated by an external air pump. Initially, the airbag 501 is in a low-pressure state. After the positioning plate 303 initially contacts the workpiece surface, an appropriate amount of gas is injected into the airbag 501, causing it to expand adaptively. The expanded airbag 501 pushes the contact surface of the positioning plate 303 to contact the workpiece surface, filling the gap between the positioning plate 303 and the workpiece through its own flexible deformation. The gap between the parts ensures that the positioning plate 303 and the workpiece surface achieve large-area, uniform contact, avoiding local stress concentration caused by rigid contact. It is especially suitable for positioning irregularly shaped workpieces or workpieces with uneven surfaces, effectively preventing workpiece deformation or surface damage during clamping. At the same time, the protective layer 502 on the outer surface of the airbag 501 plays a protective role, enhancing the friction between the airbag 501 and the workpiece surface, and preventing relative sliding between the workpiece and the positioning plate 303 during positioning. After the painting is completed, the air pump deflates the airbag 501, the airbag 501 contracts and resets, and the positioning plate 303 separates from the workpiece surface, providing space for the workpiece to be transported and moved out.

[0037] Working principle: The operator places the workpiece to be painted stably on the conveyor mechanism 2 inside the placement rack 1. Then, the conveyor roller assembly 201 starts to rotate, driving the workpiece to move along the length of the placement rack 1 towards the preset positioning area. When the workpiece is conveyed to the positioning area, the sensor 6 on the positioning structure 3 detects that the workpiece is in the positioning position and transmits the signal to the control unit. The control unit then issues a command, the conveyor mechanism 2 stops operating, and the workpiece remains stationary within the positioning area. Upon receiving the command from the control unit, the positioning structures 3 on both sides of the placement rack 1 start. The threaded rod assembly 301 rotates, driving the transmission rod 302 to move linearly. Under the action of the thread, the transmission rod 302 moves towards or away from the thread. The placement frame 1 moves in the center direction, which in turn drives the positioning plate 303 at one end to move synchronously. The positioning plates 303 on both sides cooperate with each other to apply clamping force from both sides of the workpiece, thereby achieving lateral positioning of the workpiece. At the same time, the telescopic rod 4 inside the clamping surface of the positioning structure 3 starts to work. Its moving end drives the auxiliary plate 401 to extend upward, dispersing the lateral clamping force on the workpiece. Meanwhile, an appropriate amount of gas is injected into the airbag 501, causing the airbag 501 to expand adaptively. The expanded airbag 501 will push the contact surface of the positioning plate 303 to fit against the workpiece surface. Through its own flexible deformation, it fills the gap between the positioning plate 303 and the workpiece, ensuring that the positioning plate 303 and the workpiece surface achieve large-area and uniform contact.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A positioning mechanism for spray painting, comprising a placement rack (1), characterized in that: The placement rack (1) is internally mounted with a conveying mechanism (2), and the placement rack (1) is mounted with positioning structures (3) on both sides. The positioning structure (3) is internally mounted with a telescopic rod (4), and the moving end of the telescopic rod (4) is mounted with an auxiliary plate (401). The positioning structure (3) is internally mounted with an adjustment mechanism (5).

2. The positioning mechanism for spray painting according to claim 1, characterized in that: The conveying mechanism (2) includes a conveying roller assembly (201) arranged horizontally inside the placement frame (1), and a protective sleeve (202) is provided on the outside of the conveying roller assembly (201).

3. The positioning mechanism for spray painting according to claim 2, characterized in that: The positioning structure (3) includes a threaded rod assembly (301) disposed on both sides of the outer wall of the placement frame (1). A transmission rod (302) is installed on the outer side of the threaded rod assembly (301). A positioning plate (303) is installed on the end of the transmission rod (302) near the placement frame (1). A telescopic rod (4) is connected inside the positioning plate (303).

4. The positioning mechanism for spray painting according to claim 3, characterized in that: A sensor (6) is installed on one end of the side of the positioning plate (303), and the sensor (6) is used to monitor the movement position of the workpiece.

5. A positioning mechanism for spray painting according to claim 4, characterized in that: The transmission rod (302) has a limiting rod (3021) on the outer surface of one end near the positioning plate (303). The placement frame (1) has a limiting seat (3022) installed on the outer side of the top near the limiting rod (3021). The limiting rod (3021) moves inside the limiting seat (3022).

6. A positioning mechanism for spray painting according to claim 5, characterized in that: A fixing ring (3023) is installed on the side of the limiting seat (3022), and a cleaning block (3024) is provided on the inner ring of the fixing ring (3023).

7. A positioning mechanism for spray painting according to claim 3, characterized in that: The adjustment mechanism (5) includes an airbag (501) disposed inside the positioning plate (303), and the outer surface of the airbag (501) is provided with a protective layer (502).

Images