Automobile spray gun assembly based on ultrasonic ranging

Abstract

The utility model discloses an automobile spray gun assembly based on ultrasonic ranging, which comprises a spray gun body, an LED lighting unit and an ultrasonic ranging unit, a nozzle is arranged at the head end of the spray gun body, the LED lighting unit is arranged at the head end of the spray gun body and is close to the nozzle, and the ultrasonic ranging unit comprises an ultrasonic ranging sensor and a main control chip, the ultrasonic distance measuring sensor detects the distance between the ultrasonic distance measuring sensor and a paint spraying workpiece in real time and transmits the distance to the main control chip, the main control chip measures and calculates the distance in real time, and when the distance reaches a preset distance, the main control chip drives the LED lighting unit to be lightened. High-precision control over the spraying distance is achieved, the spraying qualification rate of workpieces with complex curved surfaces is increased to 95% from 82% in the prior art, the problem of manual positioning errors is effectively solved, and the precision requirement for automobile coating is met.

Description

Technical Field

[0001] This utility model relates to the field of intelligent automotive painting equipment technology, specifically an automotive spray gun assembly based on ultrasonic ranging. Background Technology

[0002] In the field of intelligent automotive painting equipment technology, traditional automotive spray guns have significant technical defects during operation, which severely restricts the improvement of painting quality and efficiency. Specifically, these defects are as follows:

[0003] Insufficient positioning accuracy: Traditional spray guns rely on manual visual inspection or mechanical guide rails for positioning, making it difficult to meet the spraying requirements of complex curved surfaces or precision parts of automobile bodies. In spraying scenarios involving complex-shaped workpieces, the pass rate can only reach 82%, which is significantly lower than the requirements for high-precision operations.

[0004] Lack of visual guidance: Existing technology lacks a real-time distance feedback mechanism, making it impossible for operators to accurately control the distance between the spray gun and the workpiece. During the spraying process, fluctuations in distance can easily lead to uneven paint thickness and uncontrolled paint mist diffusion, further affecting the consistency of the spraying.

[0005] Poor environmental adaptability: Traditional spray guns do not integrate lighting equipment. In dim environments, it is difficult for operators to observe the smoothness of the paint surface and the state of the paint mist, resulting in delayed spraying quality inspection and increased rework costs.

[0006] Furthermore, while some existing patents (such as CN222678410U) propose spray gun distance measurement solutions, they fail to address the issue of synergistic optimization between distance measurement and lighting assistance. They cannot provide effective lighting support while simultaneously measuring distance in real time, making it difficult for operators to balance distance control and paint surface observation under complex working conditions. Therefore, how to improve the accuracy, visibility, and environmental adaptability of the spraying process through intelligent integrated design has become a pressing technical problem in this field. Utility Model Content

[0007] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0008] Therefore, the purpose of this invention is to provide an automotive spray gun assembly based on ultrasonic ranging to solve the problems mentioned in the background art.

[0009] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0010] An automotive spray gun assembly based on ultrasonic ranging, comprising:

[0011] The spray gun body has a nozzle at the head end;

[0012] The LED lighting unit is located at the head end of the spray gun body and near the nozzle.

[0013] The ultrasonic ranging unit includes an ultrasonic ranging sensor and a main control chip;

[0014] The ultrasonic ranging sensor detects the distance to the painted workpiece in real time and transmits the data to the main control chip. The main control chip calculates the distance in real time, and when the preset distance is reached, the main control chip drives the LED lighting unit to light up.

[0015] In a preferred embodiment of the automotive spray gun assembly based on ultrasonic ranging described in this utility model, the LED lighting unit is composed of multiple LED lighting beads, and the multiple LED lighting beads surround the nozzle.

[0016] As a preferred embodiment of the automotive spray gun assembly based on ultrasonic ranging described in this utility model, the ultrasonic ranging sensor includes a transmitter and a receiver. The transmitter emits a beam of ultrasonic pulses. When it encounters an obstacle and is being painted, part of the sound waves are reflected to the receiver. The receiver converts the reflected ultrasonic vibrations into electrical signals and transmits them to the main control chip.

[0017] As a preferred embodiment of the automotive spray gun assembly based on ultrasonic ranging described in this utility model, the ultrasonic ranging sensor adopts a 40kHz high-frequency sensor with a ranging range of 5-30cm and an accuracy of ±1mm.

[0018] As a preferred embodiment of the automotive spray gun assembly based on ultrasonic ranging described in this utility model, the LED lighting beads have a color temperature of 6500K, a brightness of 3000cd / m², and a total illuminance of 3000cd / m².

[0019] As a preferred embodiment of the automotive spray gun assembly based on ultrasonic ranging described in this utility model, the ultrasonic ranging unit further includes an audible and visual alarm unit. When the ultrasonic ranging sensor detects a distance of <5cm or >30cm, the main control chip triggers the buzzer and red warning light of the audible and visual alarm unit to sound an alarm.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] Employing a 40kHz high-frequency ultrasonic ranging unit with a ranging range of 5-30cm and an accuracy of ±1mm, combined with the real-time data processing capabilities of the STM32F103 main control chip, high-precision control of the spraying distance is achieved. The coating qualification rate of complex curved workpieces has been increased from 82% with traditional technology to 95%, effectively solving the problem of manual positioning error and meeting the precision requirements of automotive painting.

[0022] The LED lighting unit uses 3000cd / m² high-brightness cool white LEDs, which automatically light up only within the effective measuring range (5-30cm) and intelligently turn off when there is no effective distance. Compared with traditional constant-on lighting solutions, power consumption is reduced by 40%. The lighting logic and the measuring function work together to ensure clear visibility of the paint surface during the spraying process (visibility increased to 93%, compared to the industry average of 65%), while avoiding energy waste, thus achieving a balance between energy efficiency and functionality.

[0023] By integrating the ultrasonic ranging unit, LED lighting unit, and control motherboard, the problem of independent operation and poor coordination between ranging and lighting functions in existing technologies is solved, realizing intelligent control of the spraying process. In addition, the integrated design reduces the size of components and installation complexity, making it suitable for diverse spraying scenarios such as curved surfaces of automobile bodies and parts. It can even ensure stable operation in dim environments, significantly improving the environmental adaptability of the equipment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0025] Figure 1 This is a schematic diagram of the overall structure of an automotive spray gun assembly based on ultrasonic ranging according to this utility model.

[0026] Figure 2 This is a schematic diagram of the structure of an ultrasonic ranging sensor for an automotive spray gun assembly based on ultrasonic ranging, according to this utility model.

[0027] Figure 3 Circuit diagram of the ultrasonic ranging unit provided by this utility model;

[0028] Figure 4 The circuit diagram of the LED lighting unit provided by this utility model. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] This invention provides an automotive spray gun assembly based on ultrasonic ranging, which achieves high-precision control of the spraying distance.

[0031] Figures 1-4 The diagram shown is a structural schematic of an automotive spray gun assembly based on ultrasonic ranging according to this invention. Please refer to [link / reference]. Figures 1-4 The main body of the car spray gun assembly based on ultrasonic ranging in this embodiment includes a spray gun body 100, an LED lighting unit 200 and an ultrasonic ranging unit 300.

[0032] The spray gun body 100 has a nozzle 110 at its head end. The spray gun body 100 is a conventional paint gun in the prior art. To save text characters, the specific structure will not be described in detail.

[0033] The LED lighting unit 200 is arranged at the head end of the spray gun body 100 and close to the nozzle 110 to illuminate the area in front of the nozzle 110. In this embodiment, the LED lighting unit 200 is composed of multiple LED lighting beads, which surround the nozzle 110. The color temperature of the LED lighting beads is 6500K, the brightness is 3000cd / m², and the total illuminance is 3000cd / m².

[0034] The ultrasonic ranging unit 300 includes an ultrasonic ranging sensor 310 and a main control chip 320. In this embodiment, the ultrasonic ranging sensor 310 includes a transmitter 310a and a receiver 310b. The transmitter 310a emits a beam of ultrasonic pulses. When it encounters an obstacle or a painted workpiece, part of the sound waves are reflected to the receiver 310b. The receiver 310b converts the reflected ultrasonic vibrations into electrical signals and transmits them to the main control chip 320. The ultrasonic ranging sensor 310 uses a 40kHz high-frequency sensor with a ranging range of 5-30cm and an accuracy of ±1mm.

[0035] Combination Figures 1-4The specific operation of an automotive spray gun assembly based on ultrasonic ranging in this embodiment is as follows: The main control chip 320 sends a TRIG signal at a frequency of 10Hz. The TRIG pin of the acoustic ranging sensor 310 receives a high-level trigger signal of at least 10μs, emits eight 40kHz square waves, and the ECHO pin outputs a high level. The duration corresponds to the ultrasonic round-trip time distance = high-level time × 340m / s ÷ 2. The distance to the workpiece being painted is detected in real time and transmitted to the main control chip 320. The main control chip 320 compares the calculated distance with a preset distance. When the preset distance is reached, the main control chip 320 drives the LED lighting unit 200 to light up. In other states, the LED lighting unit 200 does not light up.

[0036] Furthermore, in this embodiment, the ultrasonic ranging unit 300 also includes an audible and visual alarm unit. When the ultrasonic ranging sensor 310 detects a distance of <5cm or >30cm, the main control chip 320 triggers the buzzer and red warning light of the audible and visual alarm unit to remind the operator to control the painting distance and improve the painting effect.

[0037] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A car spray gun assembly based on ultrasonic ranging, characterized in that, include: The spray gun body (100) has a nozzle (110) at the head end. An LED lighting unit (200) is arranged at the head end of the spray gun body (100) and near the nozzle (110); The ultrasonic ranging unit (300) includes an ultrasonic ranging sensor (310) and a main control chip (320). The ultrasonic ranging sensor (310) detects the distance to the painted workpiece in real time and transmits it to the main control chip (320). The main control chip (320) calculates the distance in real time. When the preset distance is reached, the main control chip (320) drives the LED lighting unit (200) to light up.

2. The automotive spray gun assembly based on ultrasonic ranging according to claim 1, characterized in that, The LED lighting unit (200) consists of multiple LED lighting beads, and the multiple LED lighting beads surround the nozzle (110).

3. The automotive spray gun assembly based on ultrasonic ranging according to claim 1, characterized in that, The acoustic ranging sensor (310) includes a transmitter (310a) and a receiver (310b). The transmitter (310a) emits an ultrasonic pulse. When it encounters an obstacle or a painted workpiece, part of the sound wave is reflected to the receiver (310b). The receiver (310b) converts the reflected ultrasonic vibration into an electrical signal and transmits it to the main control chip (320).

4. The automotive spray gun assembly based on ultrasonic ranging according to claim 1, characterized in that, The ultrasonic ranging sensor (310) adopts a 40kHz high-frequency sensor, with a ranging range of 5-30cm and an accuracy of ±1mm.

5. The automotive spray gun assembly based on ultrasonic ranging according to claim 2, characterized in that, The LED lighting beads have a color temperature of 6500K, a brightness of 3000cd / m², and a total illuminance of 3000cd / m².

6. The automotive spray gun assembly based on ultrasonic ranging according to claim 1, characterized in that, The ultrasonic ranging unit (300) also includes an audible and visual alarm unit. When the ultrasonic ranging sensor (310) detects a distance of <5cm or >30cm, the main control chip (320) triggers the buzzer and red warning light of the audible and visual alarm unit to sound an alarm.

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