A toothed plastic color-changing valve for automotive painting
By designing a toothed plastic color-changing valve, the problems of unstable movement and poor sealing of the color-changing valve are solved, thereby improving stability and sealing and ensuring accurate switching of paint.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZAOYI PRECISION MASCH (NANJING) CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-26
AI Technical Summary
The color-changing valves in existing automotive painting equipment are unstable, prone to shaking, and have poor sealing, leading to paint leakage.
The valve adopts a toothed plastic color-changing valve design, which uses a toothed ring and a toothed groove to lock the valve housing and valve end cover in place. Combined with a multi-layer sealing ring and a combined spring structure of a telescopic unit, it improves stability and sealing performance.
This achieves stable movement and improved sealing of the color-changing valve, preventing paint leakage and ensuring accurate color switching.
Smart Images

Figure CN224271608U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive painting equipment technology, and in particular to a toothed plastic color-changing valve for automotive painting. Background Technology
[0002] Automotive painting is a key process in automobile manufacturing and repair. It involves applying paint to the surface of a car body to create a protective, decorative, and functional coating.
[0003] The color-changing valve is a key component in automotive painting equipment used to control paint color changes. Its core function is to switch between different colors of paint through a switching action.
[0004] However, in the aforementioned prior art, the current color-changing valve is not stable enough when moving, is prone to shaking, and has poor sealing performance, which can easily lead to paint leakage. Utility Model Content
[0005] The purpose of this invention is to provide a toothed plastic color-changing valve for automotive painting, which solves the problems of existing color-changing valves being unstable during movement, prone to shaking, and having poor sealing performance, which can easily lead to paint leakage.
[0006] To achieve the above objectives, this utility model provides a toothed plastic color-changing valve for automotive painting, comprising a valve housing, a valve end cap, a first sealing ring, a second sealing ring, and a telescopic unit. The inner wall of the valve housing has a toothed ring, and the valve end cap has a toothed groove. The valve end cap is disposed at the left end of the valve housing. The toothed ring and the toothed groove are fitted together. The first sealing ring is sleeved on the outside of the valve end cap, and the second sealing ring is sleeved on the outside of the valve housing.
[0007] The telescopic unit includes a combined spring, a connecting rod, a tail rod, a slider, an O-ring, a valve needle, and an end cap. One end of the tail rod passes through the right end of the valve housing and is fixedly connected to the connecting rod, which is located inside the valve housing. The slider is located inside the valve housing, and the O-ring is located on the side of the slider. The combined spring is located inside the valve housing. One end of the valve needle passes through the valve end cap and is fixedly connected to the slider, and the end cap is fixedly connected to the other end of the valve needle.
[0008] The telescopic unit further includes a first V-shaped spring energy storage ring and a second V-shaped spring energy storage ring. The first V-shaped spring energy storage ring is disposed inside the valve end cover, and the second V-shaped spring energy storage ring is disposed inside the valve end cover and located to the left of the slider.
[0009] The outer wall of the valve housing has threads, and the valve housing has multiple holes distributed around it.
[0010] The two ends of the combined spring are fixedly connected to the O-ring seal and the inner wall of the valve housing, respectively, and one end of the connecting rod is fixedly connected to the slider.
[0011] This utility model discloses a toothed plastic color-changing valve for automotive painting. When using this device to change the color, the toothed ring and the toothed groove are adapted to fix and engage the valve housing and the valve end cap, which helps to improve sealing and stability. Furthermore, the cooperation design of the first sealing ring and the second sealing ring can further improve the sealing performance, thereby preventing paint leakage and ensuring the accuracy of color switching. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0014] Figure 2 This is a cross-sectional view of the entire utility model.
[0015] 1-Valve housing, 2-Valve end cap, 3-First sealing ring, 4-Second sealing ring, 5-Gear ring, 6-Gear groove, 7-Combination spring, 8-Connecting rod, 9-Tail rod, 10-Slider, 11-O-ring seal, 12-Valve needle, 13-End, 14-First V-shaped spring energy storage ring, 15-Second V-shaped spring energy storage ring, 16-Thread, 17-Hole. Detailed Implementation
[0016] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0017] Please see Figure 1 and Figure 2 ,in, Figure 1 This is a schematic diagram of the overall structure of this utility model. Figure 2 This is a cross-sectional view of the entire utility model.
[0018] This utility model provides a toothed plastic color-changing valve for automotive painting, including a valve housing 1, a valve end cap 2, a first sealing ring 3, a second sealing ring 4, and a telescopic unit. The inner wall of the valve housing 1 has a toothed ring 5, and the valve end cap 2 has a toothed groove 6. The valve end cap 2 is located at the left end of the valve housing 1. The toothed ring 5 and the toothed groove 6 fit together. The first sealing ring 3 is sleeved on the outside of the valve end cap 2, and the second sealing ring 4 is sleeved on the outside of the valve housing 1.
[0019] In this embodiment, when using the color-changing valve of the device, the toothed ring 5 is adapted to the toothed groove 6 to fix and engage the valve housing 1 and the valve end cap 2, which helps to improve sealing and stability. Furthermore, the cooperative design of the first sealing ring 3 and the second sealing ring 4 can further improve the sealing performance, thereby preventing paint leakage and ensuring the accuracy of color switching.
[0020] Further, the telescopic unit includes a combined spring 7, a connecting rod 8, a tail rod 9, a slider 10, an O-ring seal 11, a valve needle 12, and an end cap 13. One end of the tail rod 9 passes through the right end of the valve housing 1 and is fixedly connected to the connecting rod 8. The connecting rod 8 is located inside the valve housing 1. The slider 10 is located inside the valve housing 1. The O-ring seal 11 is located on the side of the slider 10. The combined spring 7 is located inside the valve housing 1. One end of the valve needle 12 passes through the valve end cap 2 and is fixedly connected to the slider 10. The end cap 13 is fixedly connected to the other end of the valve needle 12. The telescopic unit also includes a first V-shaped spring energy storage ring 14 and a second V-shaped spring energy storage ring 15. The first V-shaped spring energy storage ring 14 is located inside the valve end cap 2, and the second V-shaped spring energy storage ring 15 is located inside the valve end cap 2 and to the left of the slider 10.
[0021] In this embodiment, the device is moved to move the valve needle 12 and the end 13 to a specified position. The combined spring 7 keeps the end 13 in the specified position. The slider 10 prevents it from shaking. The O-ring 11 improves the sealing performance of the valve housing 1.
[0022] Furthermore, the outer wall of the valve housing 1 has threads 16, and the valve housing 1 has a plurality of holes 17 distributed around it.
[0023] In this embodiment, the thread 16 facilitates the installation of the device, and the multiple holes 17 facilitate the addition of lubricating oil to the inside of the valve housing 1. After the thread 16 is installed, it can be fixed with sealant to prevent the thread 16 from loosening.
[0024] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A toothed plastic color-changing valve for automotive painting, characterized in that, It includes a valve housing, a valve end cover, a first sealing ring, a second sealing ring, and a telescopic unit; The inner wall of the valve housing has a toothed ring, the valve end cap has a toothed groove, the valve end cap is located at the left end of the valve housing, the toothed ring and the toothed groove fit together, the first sealing ring is sleeved on the outside of the valve end cap, and the second sealing ring is sleeved on the outside of the valve housing.
2. The toothed plastic color-changing valve for automotive painting as described in claim 1, characterized in that, The telescopic unit includes a combined spring, a connecting rod, a tail rod, a slider, an O-ring, a valve needle, and an end cap. One end of the tail rod passes through the right end of the valve housing and is fixedly connected to the connecting rod. The connecting rod is located inside the valve housing. The slider is located inside the valve housing. The O-ring is located on the side of the slider. The combined spring is located inside the valve housing. One end of the valve needle passes through the valve end cap and is fixedly connected to the slider. The end cap is fixedly connected to the other end of the valve needle.
3. The toothed plastic color-changing valve for automotive painting as described in claim 2, characterized in that, The telescopic unit also includes a first V-shaped spring energy storage ring and a second V-shaped spring energy storage ring. The first V-shaped spring energy storage ring is disposed inside the valve end cover, and the second V-shaped spring energy storage ring is disposed inside the valve end cover and located to the left of the slider.
4. The toothed plastic color-changing valve for automotive painting as described in claim 3, characterized in that, The outer wall of the valve housing has threads, and the valve housing has multiple holes distributed around it.
5. The toothed plastic color-changing valve for automotive painting as described in claim 4, characterized in that, The two ends of the combined spring are fixedly connected to the O-ring and the inner wall of the valve housing, respectively, and one end of the connecting rod is fixedly connected to the slider.