A pre-painting inspection device

Abstract

The present invention provides a pre-painting detection device, in particular, a device for high-precision scanning and detection of the workpiece surface. The device includes a detection base, a rotating seat drive assembly, a clamping seat assembly, a scanning frame and a scanning head. The rotating seat drive assembly drives the output turntable to rotate at a low and uniform speed through a motor to ensure that the workpiece to be detected clamped on the clamping seat assembly remains stable during the rotation process. The scanning frame drives the scanning head to perform all-round scanning and detection on the workpiece surface through two-axis control of the vertical frame, the lifting guide frame and the horizontal frame. Through the precise matching of the ball and the harmonic groove, the output turntable realizes a stable low-speed rotation, effectively avoiding the detection error caused by speed fluctuation or mechanical vibration. The device can eliminate the blind spots and dead angles in the traditional detection method, ensure that every part of the workpiece surface can be evenly and continuously detected, greatly improve the comprehensiveness, stability and reliability of the detection, and is suitable for high-precision surface quality detection before painting.

Description

Technical Field

[0001] The present invention relates to the technical field of coating detection, in particular to a pre-coating detection device. Background Art

[0002] Pre-treatment refers to a series of treatment operations on the workpiece surface before the coating process begins to remove oil, rust, scale and other contaminants on the workpiece surface to ensure that the workpiece surface is clean and suitable for coating adhesion. Pre-treatment includes three main steps: degreasing, rust removal and phosphating. These steps are usually completed by combining chemical treatment and mechanical treatment to ensure that the workpiece surface meets the requirements of coating.

[0003] The coating pretreatment detection device in the prior art has obvious deficiencies in terms of automation level, detection comprehensiveness, detection accuracy and ease of operation. Due to the uneven speed or mechanical vibration during the rotation process, traditional detection equipment is prone to large detection errors and cannot ensure the stability and accuracy of the detection data. This poses a challenge to the high quality requirements of coating pretreatment and affects the final coating effect. Due to the uneven speed, the workpiece may experience a state of speeding up and slowing down during the rotation process, which will cause fluctuations in the surface data obtained by the detection equipment. For example, when the rotation speed suddenly increases, the sensor may not be able to capture the precise surface details in time, resulting in data loss or blur. When the speed slows down or stagnates, the sensor may over-scan a part of the surface, resulting in data redundancy and imbalance. These unstable data will directly affect the overall accuracy of the detection and cannot truly reflect the actual condition of the workpiece surface. Mechanical vibration is often difficult to avoid during the detection process, especially when using traditional mechanical transmission systems. This vibration will be transmitted to the workpiece and the detection sensor, causing noise or interference in the signal captured by the sensor, which will cause detection errors. For example, vibration may cause a slight change in the distance between the sensor and the workpiece, which will significantly affect the accuracy of the measurement, especially in high-precision surface detection. Due to the detection errors caused by the above-mentioned uneven speed and mechanical vibration, the accuracy and stability of the detection data cannot be guaranteed. This directly affects the quality control of the workpiece before painting, and it is impossible to effectively identify surface defects or insufficiently treated areas. For demanding coating processes, any tiny surface defects or improper treatment may lead to reduced coating adhesion, uneven surface or other quality problems.

[0004] In view of this, research and improvement are carried out on the existing problems, and a pre-painting detection device is provided to solve the current problems. The purpose is to solve the problems and improve the practical value through this technology. Summary of the invention

[0005] The present invention relates to a pre-painting detection device, comprising a detection base, a rotating base driving assembly, a clamping base assembly, a scanning frame and a scanning head; the rotating base driving assembly is fixed to the surface of the detection base and is used to drive the clamping base assembly to rotate at a uniform speed; the rotating base driving assembly comprises a motor, a fixed guide plate, an output rotating plate and a harmonic wave plate, the motor is fixedly installed on the bottom surface of the fixed guide plate, an eccentric shaft is provided at the output end of the motor, the harmonic wave plate is rotatably sleeved on the surface of the eccentric shaft, and is rotatably installed on the inner side of the fixed guide plate; a harmonic groove is opened on the inner side of the fixed guide plate, a plurality of balls are provided on the outer periphery of the output rotating plate, the balls are slidably abutted against the surface of the harmonic groove, a guide plate wheel is fixedly installed on the bottom surface of the output rotating plate, and a plurality of ball grooves corresponding to the balls are provided at the bottom end of the guide plate wheel; the top surface of the output rotating plate is fixedly connected to the bottom surface of the clamping base assembly, and under the drive of the motor, the output rotating plate realizes eccentric motion under the action of the eccentric shaft, and the low-speed rotation of the output rotating plate is realized through the cooperation of the harmonic groove, the balls and the harmonic wave plate.

[0006] Preferably, the clamping seat assembly is used to clamp the object to be detected, and is driven by the rotating seat driving assembly to rotate at a low and uniform speed to ensure that the object to be detected maintains a stable and uniform rotation during the scanning process.

[0007] Preferably, the clamping seat assembly comprises a fixed disc seat, a rotating disc and a clamping finger rod, and the bottom end of the clamping finger rod penetrates and is slidably sleeved on the inner side of a first guide groove on the surface of the fixed disc seat and the inner side of a second guide groove on the surface of the rotating disc;

[0008] When the rotating disk rotates relative to the fixed disk seat, the radial movement of the clamping finger rod is achieved through the guidance of the first guide groove and the second guide groove, so as to stably clamp the object to be detected.

[0009] Preferably, the scanning frame is used to drive the scanning head to perform longitudinal and lateral two-axis movements to perform omnidirectional scanning and detection of the object to be detected.

[0010] Preferably, the scanning frame includes a vertical frame, a lifting guide frame and a horizontal frame. The vertical frame drives the lifting guide frame to move longitudinally through the vertical axis screw, and the lifting guide frame drives the horizontal frame to move horizontally through the horizontal axis screw. A scanning head is fixedly installed on the horizontal frame to achieve all-round scanning of the object to be inspected.

[0011] Preferably, the harmonic groove is in the shape of corrugated teeth, and the ball is located in the gap between the outer periphery of the harmonic disk and the inner side of the harmonic groove, and is in sliding contact with the surfaces of the harmonic disk and the harmonic groove.

[0012] Preferably, the ball grooves at the bottom end of the guide wheel are arranged in one-to-one correspondence with the balls, and the ball grooves, balls and harmonic wave discs are located in the same horizontal plane.

[0013] Preferably, the top surface of the output turntable and the top end of the fixed guide disc are located at the same horizontal plane, ensuring smooth cooperation of various components of the device during operation, thereby reducing vibration and error.

[0014] The beneficial effects achieved by the present invention are:

[0015] 1. In the present invention, through the design of the turntable drive assembly, the object to be detected can rotate at a low and uniform speed, ensuring that it remains stable during the scanning process and avoiding detection errors caused by speed fluctuations or mechanical vibrations, thereby improving the stability and accuracy of the detection.

[0016] 2. In the present invention, through the cooperation of the scanning frame and the clamping seat assembly, the object to be inspected can be scanned in all directions, eliminating the detection blind spots and dead angles caused by uneven rotation or interruption in traditional detection methods, ensuring that each part can be detected evenly and continuously.

[0017] 3. In the present invention, the precise coordination of the harmonic disk, the ball and the harmonic groove ensures the low-speed and stable rotation of the output turntable, thereby improving the comprehensiveness and reliability of the detection device in operation and significantly improving the consistency and accuracy of the detection results.

[0018] In summary, the pre-painting inspection device of the present invention effectively solves the deficiencies in the prior art. Through unique design and precise control, it ensures that the surface inspection of the workpiece is more comprehensive and accurate, providing reliable quality assurance for the subsequent painting process. The device is widely applicable to various surface inspection scenarios before industrial painting and has significant application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0020] Figure 2 A schematic diagram of the structure of a detection base and a rotary drive assembly according to an embodiment of the present invention;

[0021] Figure 3 It is a schematic structural diagram of a rotating seat driving assembly and a clamping seat assembly according to an embodiment of the present invention;

[0022] Figure 4 It is a schematic diagram of the exploded structure of a clamping base assembly according to an embodiment of the present invention;

[0023] Figure 5 It is a schematic diagram of a partial cross-sectional structure of a swivel drive assembly according to an embodiment of the present invention;

[0024] Figure 6 It is a schematic diagram of the exploded structure of a swivel drive assembly according to one embodiment of the present invention;

[0025] Figure 7A schematic diagram of the internal structure of a fixed guide plate according to an embodiment of the present invention;

[0026] Figure 8 The figure is a schematic diagram of the scanning frame structure according to an embodiment of the present invention.

[0027] Reference numerals:

[0028] 100. Detection base;

[0029] 200, rotating seat driving assembly; 210, motor; 220, fixed guide plate; 230, output rotating plate; 240, harmonic plate; 211, eccentric shaft; 221, harmonic groove; 222, ball bearing; 231, guide plate wheel; 232, ball groove;

[0030] 300, clamping seat assembly; 310, fixed plate seat; 320, rotating plate; 330, clamping finger rod; 311, first guide groove; 321, second guide groove;

[0031] 400, scanning frame; 410, vertical frame; 420, lifting guide frame; 430, horizontal frame; 411, vertical axis screw rod; 431, horizontal axis screw rod; 500, scanning head. DETAILED DESCRIPTION

[0032] For a better understanding of the present invention, the pre-painting detection device of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. These embodiments are only used to illustrate the principle of the present invention and do not limit the protection scope of the present invention.

[0033] Embodiment 1:

[0034] like Figure 1-Figure 8 As shown, the pre-painting inspection device of this embodiment includes an inspection base 100, a rotating base driving assembly 200, a clamping base assembly 300, a scanning frame 400 and a scanning head 500. Through the close cooperation of various components, the present invention can realize low-speed stable rotation of the workpiece to be inspected and all-round surface inspection without dead angles.

[0035] 1. Structure and working principle of the swivel drive assembly 200:

[0036] The turntable drive assembly 200 is fixedly mounted on the surface of the detection base 100, and is mainly composed of a motor 210, a fixed guide disc 220, an output turntable 230, and a harmonic disc 240. The motor 210 is mounted on the bottom of the fixed guide disc 220 through a fixed bracket, and the output end of the motor is connected to the output turntable 230 through an eccentric shaft 211. The harmonic disc 240 is mounted on the outside of the eccentric shaft 211 by a sleeve connection, and the harmonic disc 240 can rotate freely inside the fixed guide disc 220.

[0037] When the motor 210 is started, the motor drives the eccentric shaft 211 to rotate, and the rotation of the eccentric shaft drives the harmonic disc 240 sleeved thereon to rotate synchronously. The rotation of the harmonic disc 240 is transmitted to the output turntable 230 through the ball bearings 222, thereby driving the output turntable to rotate slowly and steadily. The ball bearings 222 are located in the harmonic grooves 221 on the inner side of the fixed guide disc 220, and the ball bearings are in sliding contact with the surface of the harmonic grooves. Through this precise transmission structure, the rotation stability of the output turntable 230 is ensured, and the detection error caused by mechanical vibration is reduced.

[0038] 2. Structure and working principle of the clamp assembly 300:

[0039] The clamping seat assembly 300 is used to firmly clamp the workpiece to be inspected, and realizes the low-speed uniform rotation of the workpiece under the drive of the rotating seat driving assembly 200. The clamping seat assembly 300 includes a fixed plate seat 310, a rotating plate 320 and a clamping finger rod 330. The bottom end of the clamping finger rod 330 passes through the fixed plate seat 310 and is slidably sleeved in the first guide groove 311 on the surface of the fixed plate seat and the second guide groove 321 on the surface of the rotating plate 320.

[0040] When the rotating disk 320 rotates relative to the fixed disk seat 310, the first guide groove 311 and the second guide groove 321 guide the clamping finger rod 330 to move radially, thereby firmly clamping the workpiece in the clamping seat assembly. This design ensures that the workpiece remains stable during the rotation process, and there will be no blind spots or dead angles in the detection due to uneven rotation, ensuring that every part of the workpiece surface can be evenly and continuously detected.

[0041] 3. The structure and working principle of the scanning frame 400 and the scanning head 500:

[0042] The scanning frame 400 is responsible for driving the scanning head 500 to perform a comprehensive scanning and detection on the surface of the workpiece. The scanning frame 400 is mainly composed of a vertical frame 410, a lifting guide frame 420 and a horizontal frame 430. The vertical frame 410 drives the lifting guide frame 420 to move longitudinally through the vertical axis screw 411, and the lifting guide frame 420 drives the horizontal frame 430 to move horizontally through the horizontal axis screw 431. The scanning head 500 is fixedly mounted on the horizontal frame 430, and scans the surface of the workpiece along a predetermined trajectory as the horizontal frame and the lifting guide frame move in two axes.

[0043] In actual use, the clamping seat assembly 300 drives the workpiece to rotate at a low and uniform speed, while the scanning head 500 moves longitudinally and transversely under the control of the scanning frame 400, thereby achieving full scanning coverage of the workpiece surface. This design ensures that every part of the workpiece can be scanned, eliminating the detection blind spots and dead angles in traditional detection equipment.

[0044] Embodiment 2:

[0045] In this embodiment, the structure of the rotary seat driving assembly 200 is optimized, mainly by improving the coordination between the harmonic groove 221 and the ball 222, so that the contact between the ball and the harmonic groove is closer, reducing mechanical vibration and noise during rotation. This optimization makes the rotation of the output rotary disc 230 more stable, further improving the stability and accuracy of the detection of the workpiece during the rotation process.

[0046] In addition, the clamping seat assembly 300 in this embodiment is provided with an adjustable clamping force control device. The device can adjust the clamping force according to the size and shape of the workpiece to be inspected, ensuring that different types of workpieces can be reliably fixed in the clamping seat assembly. This improvement increases the scope of application of the inspection device, enabling it to meet a wider range of workpiece inspection needs.

[0047] Embodiment 3:

[0048] This embodiment further optimizes the scanning frame 400 and is equipped with a high-precision sensor system and feedback control system. The sensor system monitors the position and motion trajectory of the scanning head 500 in real time, and adjusts the motion of the scanning head through feedback control so that it can scan more accurately according to the predetermined trajectory. This system not only improves the accuracy of detection, but also reduces the problem of repeated detection or detection blind spots that may be caused by error accumulation.

[0049] In addition, the scanning head 500 of this embodiment is also equipped with a high-precision laser distance measuring instrument, which can perform more detailed inspection on the surface of the workpiece, especially the ability to detect small surface defects has been significantly improved. This high-precision surface inspection technology is particularly suitable for quality control before painting, ensuring that the workpiece surface has no defects before painting.

[0050] The working principle and use process of the present invention:

[0051] The pre-painting inspection device of the present invention realizes low-speed and stable rotation of the workpiece to be inspected and all-round surface scanning inspection without blind spots through the synergistic effect of various components. The working principle and use process of the device are as follows:

[0052] 1. Preparation and setting of the device: First, place the workpiece to be inspected on the clamping seat assembly 300. The clamping seat assembly 300 includes a fixed plate seat 310, a rotating plate 320 and a clamping finger rod 330. The workpiece can be firmly clamped in the clamping seat assembly by adjusting the radial position of the clamping finger rod 330. Adjust the positions of the vertical frame 410, the lifting guide frame 420 and the horizontal frame 430 of the scanning frame 400 to ensure that the scanning head 500 can cover the entire surface area of ​​the workpiece to be inspected.

[0053] 2. Start the rotating seat drive assembly to achieve uniform rotation of the workpiece: After starting the device, the motor 210 starts to run, driving the eccentric shaft 211 to rotate. The rotation of the eccentric shaft 211 is transmitted to the output rotating disc 230 through the harmonic disc 240, thereby driving the output rotating disc 230 to drive the clamping seat assembly 300 and the workpiece to rotate at a low and uniform speed. The cooperation of the ball 222 and the harmonic groove 221 ensures the smooth rotation of the output rotating disc 230, reduces mechanical vibration, and ensures the stability of the workpiece during rotation.

[0054] 3. The scanning head performs an all-round scanning of the workpiece: As the workpiece rotates, the scanning head 500 performs longitudinal and transverse two-axis motion under the control of the scanning frame 400. The vertical frame 410 controls the longitudinal motion of the lifting guide frame 420 through the vertical axis screw 411, and the horizontal frame 430 controls the transverse motion of the scanning head 500 through the transverse axis screw 431. The scanning head 500 moves along a predetermined trajectory and performs a comprehensive scan of the workpiece surface to ensure that every part of the workpiece can be evenly detected, eliminating blind spots and dead angles.

[0055] 4. Data collection and processing: During the inspection process, the scanning head 500 uses sensors and laser rangefinders to accurately measure the workpiece surface and collect surface data. The collected data is transmitted to the control system in real time, and the control system analyzes and processes the data to determine whether there are defects on the workpiece surface or parts that do not meet the coating requirements.

[0056] 5. Output of test results: After the test is completed, the control system will output the test results to the display device or storage device. If there are defects on the surface of the workpiece, the control system can issue an alarm or automatically record the specific location of the unqualified workpiece. According to the test results, the workpiece can be sent to the next process for processing, or re-tested or repaired according to the test data.

[0057] 6. Stop the equipment: After the inspection task is completed, turn off the equipment and stop the operation of the motor 210 and the scanning frame 400. Remove the workpiece and carry out subsequent processing or transfer to the next process. Clean and maintain the equipment to ensure that the equipment is in good condition for the next inspection.

[0058] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A pre-painting detection device, characterized in that: It comprises a detection base (100), a rotating base driving assembly (200), a clamping base assembly (300), a scanning frame (400) and a scanning head (500); The rotating seat driving assembly (200) is fixed to the surface of the detection base (100) and is used to drive the clamping seat assembly (300) to rotate at a uniform speed; The rotary seat driving assembly (200) comprises a motor (210), a fixed guide plate (220), an output rotary plate (230) and a harmonic plate (240); the motor (210) is fixedly mounted on the bottom surface of the fixed guide plate (220); an eccentric shaft (211) is provided at the output end of the motor; the harmonic plate (240) is rotatably sleeved on the surface of the eccentric shaft (211) and rotatably mounted on the inner side of the fixed guide plate (220); A harmonic groove (221) is provided on the inner side of the fixed guide disc (220), a plurality of balls (222) are provided on the outer periphery of the output rotary disc (230), the balls (222) are in sliding contact with the surface of the harmonic groove (221), a guide disc wheel (231) is fixedly mounted on the bottom surface of the output rotary disc (230), and a plurality of ball grooves (232) corresponding to the balls (222) are provided at the bottom end of the guide disc wheel (231); The top surface of the output rotating disk (230) is fixedly connected to the bottom surface of the clamping seat assembly (300); under the drive of the motor (210), the output rotating disk (230) realizes eccentric motion under the action of the eccentric shaft (211); and the low-speed rotation of the output rotating disk (230) is realized through the cooperation of the harmonic groove (221), the ball (222) and the harmonic disk (240); The ball grooves (232) at the bottom end of the guide wheel (231) are arranged in one-to-one correspondence with the balls (222), and the ball grooves (232), the balls (222) and the harmonic wave disc (240) are located in the same horizontal plane; The top surface of the output rotary disc (230) and the top end of the fixed guide disc (220) are located at the same horizontal plane, ensuring the smooth cooperation of various components of the device during operation, thereby reducing vibration and error.

2. The pre-painting detection device according to claim 1, characterized in that: The clamping seat assembly (300) is used to clamp the object to be detected, and is driven by the rotating seat driving assembly (200) to rotate at a low and uniform speed, so as to ensure that the object to be detected maintains stable and uniform rotation during the scanning process.

3. The pre-painting detection device according to claim 2, characterized in that: The clamping seat assembly (300) comprises a fixed disc seat (310), a rotating disc (320) and a clamping finger rod (330), wherein the bottom end of the clamping finger rod (330) penetrates and is slidably sleeved on the inner side of a first guide groove (311) on the surface of the fixed disc seat (310) and the inner side of a second guide groove (321) on the surface of the rotating disc (320); When the rotating disk (320) rotates relative to the fixed disk seat (310), radial movement of the clamping finger rod (330) is achieved through the guidance of the first guide groove (311) and the second guide groove (321), so as to stably clamp the object to be detected.

4. The pre-painting detection device according to claim 1, characterized in that: The scanning frame (400) is used to drive the scanning head (500) to perform longitudinal and transverse two-axis movements, so as to perform omnidirectional scanning and detection on the object to be detected.

5. The pre-painting detection device according to claim 4, characterized in that: The scanning frame (400) comprises a vertical frame (410), a lifting guide frame (420) and a horizontal frame (430); the vertical frame (410) drives the lifting guide frame (420) to move longitudinally via a vertical axis screw rod (411); the lifting guide frame (420) drives the horizontal frame (430) to move transversely via a transverse axis screw rod (431); and a scanning head (500) is fixedly mounted on the horizontal frame (430) to achieve omnidirectional scanning of an object to be inspected.

6. The pre-painting detection device according to claim 1, characterized in that: The harmonic groove (221) is in the shape of corrugated teeth, and the ball (222) is located in the gap between the outer periphery of the harmonic disc (240) and the inner side of the harmonic groove (221), and is in sliding contact with the surfaces of the harmonic disc (240) and the harmonic groove (221).

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