A new energy automobile motor noise reduction production device

Abstract

The utility model discloses a new energy automobile motor is with noise reduction production device, include: main part is located base and top and is located base, the utility model relates to the technical field of automobile motor noise reduction, and the present application solves a plurality of technical pain points in the production of traditional new energy automobile motor noise reduction through the integration, automation design, first dynamic height adjustment and six axle mechanical arm cooperative operation have realized the even spraying of motor surface complex curved surface, avoided the problem such as leak spraying, uneven thickness, improved the performance consistency of noise reduction layer, secondly adopt molecular chain diffusion no -adhesive bonding technology, make sound -absorbing layer and sound insulation layer natural bonding in foaming process, not only strengthened the bonding reliability, avoided the delamination phenomenon under the high temperature and high humidity environment, also reduced the use of adhesive, reduced the release of volatile organic compounds, improved the environmental protection.

Description

Technical Field

[0001] This utility model relates to the field of automotive motor noise reduction technology, specifically a noise reduction production device for new energy vehicle motors. Background Technology

[0002] Traditional noise reduction technologies for new energy vehicle motors have multiple drawbacks: fixed spraying equipment can easily lead to uneven spraying on complex curved surfaces, affecting the performance of the noise reduction layer; multi-layer materials rely on adhesives for bonding, which are prone to delamination under high temperature and humidity conditions, and the adhesives may release volatile organic compounds; manual handling stations have poor coordination accuracy, low production efficiency, and difficulty in achieving continuous automated operation; single-layer materials cannot meet the needs of sound absorption and sound insulation, traditional open-pore sound-absorbing materials are prone to moisture absorption and attenuation, and self-skinning sound insulation materials are not lightweight enough. This patent addresses the aforementioned issues by integrating a support and displacement structure to achieve precise motor displacement and dynamic height adjustment. Combined with a six-axis robotic arm laser positioning and flow monitoring module, it ensures accurate spraying of the PUR foam material. A hydraulic telescopic push rod and a pressure / displacement dual monitoring module enable the formation of a sealed foam cavity. A molecular chain diffusion adhesive-free bonding technology is employed to naturally bond the self-skinning PUR sound insulation layer and the open-cell PUR sound absorption layer, forming a composite noise reduction layer with moderate thickness and strong temperature adaptability. This effectively reduces motor noise transmission, improves NVH performance, and achieves fully automated and efficient production. Therefore, this patent was developed through in-depth research into the aforementioned problems. Utility Model Content

[0003] To achieve the above objectives, this utility model provides the following technical solution: a noise reduction production device for new energy vehicle motors, comprising a main mounting base and a top mounting base. The main mounting base is connected to an electric slide rail. A support displacement and transfer structure is installed on the main mounting base, and a spraying and pressing foaming structure is installed on the top mounting base. The support displacement and transfer structure includes an electric slider, which is mounted on the electric slide rail. A longitudinal height adjustment motor is installed inside the electric slider, and the longitudinal height adjustment motor is connected to a transfer gearbox. The transfer gearbox is equipped with... Within the electric slider, the transfer gearbox is connected to several longitudinal height adjusting threaded rods, which are movably inserted into the electric slider and screwed into several longitudinal height adjusting threaded sleeves. The longitudinal height adjusting threaded sleeves are connected to the connecting platform, which is connected to the bottom covering platform. The bottom covering platform is movably connected to the PUR foam sound insulation layer, which is fitted over the PUR foam sound absorption layer and over the outer side of the automotive motor body.

[0004] Preferably, the sprayed and pressed foaming structure includes a hydraulic telescopic push rod, which is installed on the top mounting base and connected to the top covering platform. A sound-absorbing material spraying robot arm is provided on the top mounting base, and a sound-insulating material spraying robot arm is also provided on the top mounting base. Preferably, the longitudinal height adjusting threaded rods are three in number and arranged in an equilateral triangle; Preferably, both the sound-absorbing material spraying robot arm and the sound-insulating material spraying robot arm adopt a six-axis industrial robot structure. Each robot arm is equipped with a laser positioning sensor and a flow monitoring module at its end. The laser positioning sensor is used to calibrate the spraying path in real time, and the flow monitoring module is linked with the PLC control system to achieve precise flow control of the PUR foaming material. Preferably, a pressure monitoring module and a displacement encoder are provided between the hydraulic telescopic push rod and the top covering platform. The pressure monitoring module is used to monitor the fastening pressure value in real time, and triggers the locking command of the PLC control system when the pressure value reaches a preset threshold. The displacement encoder is used to precisely control the descent displacement of the top covering platform. Preferably, the PUR foamed sound insulation layer is made of self-skinning PUR material, and the two layers of material are bonded together without glue through molecular chain diffusion. Beneficial effects

[0005] This invention provides a noise reduction production device for new energy vehicle motors. Compared with existing technologies, this noise reduction production device for new energy vehicle motors effectively solves several technical pain points in traditional new energy vehicle motor noise reduction production through integrated and automated design. First, dynamic height adjustment and the collaborative operation of a six-axis robotic arm achieve uniform spraying on the complex curved surface of the motor, avoiding problems such as missed spraying and uneven thickness, thus improving the performance consistency of the noise reduction layer. Second, the use of molecular chain diffusion adhesive-free bonding technology allows the sound-absorbing layer and the sound-insulating layer to naturally bond during the foaming process, which not only enhances bonding reliability but also avoids delamination under high temperature and humidity conditions. Furthermore, this technology reduces the use of adhesives, lowers the release of volatile organic compounds, and improves environmental friendliness. Moreover, the fully automated process, through closed-loop control of displacement, pressure, and flow rate, achieves continuous and efficient production from spraying to curing, reducing manual handling and workstation coordination errors, and improving production efficiency and precision. Ultimately, the composite noise reduction layer formed by this device possesses excellent sound absorption and insulation properties as well as lightweight characteristics, effectively reducing the transmission of motor noise to the cab during operation and improving the overall NVH performance of the vehicle. Simultaneously, through automation and environmentally friendly design, it promotes the upgrading of noise reduction production technology for new energy vehicle motors. Attached Figure Description

[0006] Figure 1This is a front sectional view of the noise reduction production device for new energy vehicle motors described in this utility model.

[0007] Figure 2 This is a schematic diagram of the main structure of an automobile motor for a noise reduction production device for a new energy vehicle motor, as described in this utility model.

[0008] Figure 3 for Figure 1 A magnified view of the letter "A" in the diagram.

[0009] In the diagram: 1. Main body mounting base; 2. Top mounting base; 3. Electric slide rail; 4. Electric slider; 5. Longitudinal height adjustment motor; 6. Transfer gearbox; 7. Longitudinal height adjustment threaded rod; 8. Longitudinal height adjustment threaded sleeve; 9. Connecting platform; 10. Bottom layer covering platform; 11. Automotive motor body; 12. PUR foam sound-absorbing layer; 13. PUR foam sound-insulating layer; 14. Hydraulic telescopic push rod; 15. Top layer covering platform; 16. Sound-absorbing material spraying robotic arm; 17. Sound-insulating material spraying robotic arm. Detailed Implementation

[0010] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0011] Those skilled in the art should connect all electrical components and their compatible power supplies in this case via wires. Appropriate controllers and encoders should be selected according to the actual situation to meet control requirements. The specific connection and control sequence should refer to the working principle described below, where the electrical components are connected in sequence. The detailed connection methods are well-known in the art. The following mainly introduces the working principle and process, and will not describe the electrical control further. Example

[0012] Please see Figure 1-3 In the field of noise reduction for new energy vehicle motors, traditional technologies often employ a single sound-absorbing or sound-insulating material layered structure, which has the following technical drawbacks: Insufficient uniformity of spraying: Most existing spraying equipment consists of fixed robotic arms, which lack dynamic height adjustment capabilities. This can lead to uneven thickness and missed spraying when spraying complex curved surfaces of motors, affecting the consistency of noise reduction layer performance.

[0013] Low reliability of material bonding: Multi-layer noise reduction materials (such as sound-absorbing layers and sound-insulating layers) usually rely on adhesives for bonding. In high temperature and high humidity environments, delamination and separation are prone to occur. In addition, adhesives may release volatile organic compounds, which do not meet environmental protection requirements.

[0014] Low level of automation in production: Traditional production processes require manual handling of motors to different workstations multiple times, resulting in poor coordination accuracy, low production efficiency, and difficulty in achieving continuous automated operations of spraying, curing, and pressing.

[0015] Limitations in noise reduction performance: Single-layer materials cannot simultaneously meet the dual requirements of sound absorption and sound insulation, and traditional open-pore sound-absorbing materials are prone to moisture absorption, leading to performance degradation, while self-skinning sound insulation materials suffer from insufficient lightweighting.

[0016] This patent addresses the aforementioned technical pain points by proposing an integrated and automated noise reduction production device for new energy vehicle motors. Through a support-and-displacement transfer structure, precise displacement and dynamic height adjustment of the motor are achieved between the spraying stations. Combined with a six-axis robotic arm's laser positioning and flow monitoring module, this ensures accurate spraying of PUR foam material while achieving lightweighting and environmental friendliness. By synergistically optimizing displacement control, dynamic adjustment, and material curing timing, the device achieves fully automated operation from spraying to curing, ultimately forming a composite noise reduction layer of suitable thickness and strong temperature adaptability. This effectively reduces the transmission of motor noise to the driver's cab, improving the NVH performance of new energy vehicles. Therefore, this application protects a noise reduction production device for a new energy vehicle motor. First, the main body 11 of the vehicle motor is placed stably on the bottom covering platform 10. The electric slide rail 3 on the main body mounting base 1 is then activated to drive its rotation, causing the electric slider 4 to move horizontally. This allows the bottom covering platform 10 to be precisely moved below the sound-absorbing material spraying robotic arm 16. At this point, the sound-absorbing material spraying robotic arm 16 is activated to uniformly spray PUR foamed sound-absorbing layer 12 material onto the surface of the vehicle motor main body 11 on the bottom covering platform 10. After the PUR foamed sound-absorbing layer 12 material has slightly cured, the electric slide rail is immediately activated again. 3. The bottom-layer coating platform 10 is smoothly transferred to the area below the sound insulation material spraying robotic arm 17. During the process of the sound insulation material spraying robotic arm 17 spraying PUR foamed sound insulation layer 13 onto the bottom-layer coating platform 10, the longitudinal height adjustment motor 5 inside the electric slider 4 is simultaneously activated. The longitudinal height adjustment motor 5 drives the distribution gearbox 6, and through the rotational linkage of the three longitudinal height adjustment threaded rods 7, the coordinated lifting and lowering of the three longitudinal height adjustment threaded sleeves 8 is achieved. This, in turn, controls the connecting platform 9 to precisely adjust the height of the bottom-layer coating platform 10. This dynamic adjustment enables the spraying operation to be truly efficient. The multi-angle, full-coverage spraying operation completes the spraying of the PUR foam sound insulation layer 13. Afterward, the bottom covering platform 10 is quickly moved to directly beneath the top covering platform 15. The top mounting base 2 is then activated to extend the hydraulic telescopic push rod 14. The extended hydraulic telescopic push rod 14 securely engages the top covering platform 15 and the bottom covering platform 10, forming a complete encapsulated shell structure. This sealed space ensures full contact between the PUR foam sound-absorbing layer 12 and the PUR foam sound insulation layer 13, resulting in an expansion and foaming reaction that forms a stable sound insulation protective layer. The entire operation process utilizes precise displacement control and dynamic height adjustment. The clever coordination with the material curing sequence enables fully automated operation from material spraying to curing, ensuring smooth transitions and precise operation at each step, ultimately forming a uniform and stable composite protective layer. The PUR foam sound insulation layer 13 uses PUR self-skinning material, which has excellent sound and heat insulation performance due to its high density, while also being aesthetically pleasing. The PUR foam sound absorption layer 12 uses open-cell PUR with a lower density, which has both excellent sound absorption performance and a lightweight effect. The two layers can be firmly bonded, reducing the use of adhesive. Through the interaction of the above layers, the noise transmitted to the cab when the motor is working is reduced.

[0017] In summary, this noise reduction production device for new energy vehicle motors achieves efficient noise reduction layer formation through integrated and automated design. The operation process is centered on a PLC control system: First, the main body 11 of the car motor is stably placed on the bottom covering platform 10. The electric slide rail 3 drives the electric slider 4 to move horizontally to directly below the sound-absorbing material spraying robotic arm 16. The six-axis robotic arm calibrates the path using a laser positioning sensor, and the flow monitoring module controls the uniform spraying of the PUR foamed sound-absorbing layer 12. After slight curing, it is transferred to the sound insulation material spraying station. During the spraying process, the longitudinal height adjustment motor 5 drives three equilateral triangularly distributed threaded rods to rotate via a transfer gearbox 6. This, in conjunction with the threaded sleeve, drives the connecting platform 9 to achieve precise lifting and lowering of the bottom platform. Combined with the multi-angle spraying by the robotic arm, this achieves full coverage without blind spots. Subsequently, the hydraulic telescopic push rod 14 pushes the top-layer covering platform 15 to engage. The pressure monitoring module (preset threshold trigger lock) and the displacement encoder work together to ensure the formation of the sealed cavity, causing the PUR foamed sound insulation layer 13 and the sound absorption layer to achieve adhesive-free bonding through molecular chain diffusion, forming a stable bond at an appropriate thickness. Supplementary electrical equipment includes: a temperature controller to maintain a constant temperature in the foaming environment, an exhaust gas treatment device to purify sprayed volatiles, and a fault diagnosis system to monitor parameters such as motor current and robotic arm trajectory deviation in real time. In principle, dynamic height adjustment achieves synchronous rotation of the three threaded rods through a synchronous pulley set, avoiding uneven force on a single rod; the adhesive-free bonding technology utilizes the mutual penetration of PUR material molecular chains during the foaming process to reduce the use of adhesives; the entire process is controlled by a closed loop of three parameters—displacement, pressure, and flow—to ensure that the spraying accuracy error is ≤±0.5mm, ultimately forming a composite noise reduction layer that combines sound absorption, sound insulation, lightweighting, and environmental protection, effectively reducing the transmission of motor noise to the cab and improving the overall NVH performance of the vehicle.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A noise reduction production device for a new energy vehicle motor, comprising a main mounting base and a top mounting base, wherein the main mounting base is connected to an electric slide rail, a support displacement and transfer structure is installed on the main mounting base, and a spray-coating and foaming structure is installed on the top mounting base, characterized in that... The supporting displacement structure includes an electric slider mounted on an electric slide rail. A longitudinal height adjustment motor is installed inside the electric slider and connected to a transfer gearbox. The transfer gearbox is installed inside the electric slider and connected to several longitudinal height adjustment threaded rods. These threaded rods are movably inserted into the electric slider and screwed into several longitudinal height adjustment threaded sleeves. The threaded sleeves are connected to a connecting platform, which is connected to a bottom covering platform. The bottom covering platform is movably connected to a PUR foam sound insulation layer, which is fitted over a PUR foam sound absorption layer. The PUR foam sound absorption layer is fitted over the outside of the automotive motor body.

2. The noise reduction production device for new energy vehicle motors according to claim 1, characterized in that, The spray-coated foaming structure includes a hydraulic telescopic push rod, which is installed on the top mounting base and connected to the top covering platform. A sound-absorbing material spraying robot arm is installed on the top mounting base, and a sound-insulating material spraying robot arm is also installed on the top mounting base.

3. The noise reduction production device for new energy vehicle motors according to claim 2, characterized in that, The longitudinal height adjusting threaded rods are three in number and are distributed in an equilateral triangle.

4. The noise reduction production device for new energy vehicle motors according to claim 3, characterized in that, Both the sound-absorbing material spraying robot arm and the sound-insulating material spraying robot arm adopt a six-axis industrial robot structure. Each robot arm is equipped with a laser positioning sensor and a flow monitoring module at its end. The laser positioning sensor is used to calibrate the spraying path in real time, and the flow monitoring module is linked with the PLC control system to achieve precise flow control of the PUR foaming material.

5. The noise reduction production device for new energy vehicle motors according to claim 4, characterized in that, A pressure monitoring module and a displacement encoder are installed between the hydraulic telescopic push rod and the top covering platform. The pressure monitoring module is used to monitor the fastening pressure value in real time. When the pressure value reaches a preset threshold, it triggers a locking command from the PLC control system. The displacement encoder is used to precisely control the descent displacement of the top covering platform.

6. The noise reduction production device for new energy vehicle motors according to claim 5, characterized in that, The PUR foamed sound insulation layer uses self-skinning PUR material, and the two layers of material are bonded together without glue through molecular chain diffusion.

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