Surface treatment equipment and process for zinc alloy precision die castings

Abstract

This invention relates to the field of die casting processing technology, and discloses a surface treatment device and process for precision zinc alloy die castings. The device includes a mounting frame, an inlet on one side of a first telescopic spring, and an outlet on the other side of the mounting frame. Conveyor frames are mounted on both the inlet and outlet. A grinding chamber is located at the top of the mounting frame, and a collection box is located at the bottom. A conveyor belt is installed inside the grinding chamber, and a coating component is mounted on one outer wall of the grinding chamber. A liquid storage tank containing polishing liquid is located on one side of the grinding chamber, and a metering component is installed inside the liquid storage tank. The coating component is used to uniformly coat the surface of the zinc alloy die casting with polishing liquid. The metering component can quantitatively release polishing liquid according to the size of the zinc alloy die casting. Compared with the prior art, this application makes the use of polishing liquid more precise, reduces waste, and the coating component ensures uniform distribution of polishing liquid, further improving the surface treatment effect.

Description

Technical Field

[0001] This invention relates to the field of die casting processing technology, specifically to a surface treatment device and process for zinc alloy precision die castings. Background Technology

[0002] Zinc alloy die castings are a type of pressure-casting part. Different casting molds result in different shapes of zinc alloy die castings. Due to their excellent mechanical properties, electrical conductivity, and good surface machinability, zinc alloy precision die castings are widely used in fields such as electronic product housings, automotive parts, and precision instrument accessories. After the zinc alloy die casting is formed, it usually needs to undergo surface polishing to make the parts smoother.

[0003] In the prior art, when polishing the surface of zinc alloy die castings, polishing liquid is usually applied to the surface before grinding and polishing. However, the polishing liquid is unevenly released during use, resulting in serious waste. At the same time, grinding debris and dust are difficult to collect effectively, causing environmental pollution and equipment cleaning problems. Therefore, this application discloses a surface treatment device and process for zinc alloy precision die castings to meet the need for more precise release of polishing liquid when polishing zinc alloy die castings. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a surface treatment device and process for precision die-cast zinc alloy parts. It has advantages such as making the use of polishing slurry more precise and reducing waste, and solves a series of problems in existing technologies, such as uneven release of polishing slurry during use, which leads to serious waste.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a surface treatment device for precision die-cast zinc alloy parts, comprising a mounting frame, an inlet on one side of the mounting frame, an outlet on the other side of the mounting frame, a conveyor frame on both the inlet and outlet, a grinding chamber on the top of the mounting frame, a collection box on the bottom of the mounting frame, a conveyor belt inside the grinding chamber for conveying the zinc alloy die-cast parts entering the grinding chamber, multiple grinding belts inside the grinding chamber for grinding the surface of the zinc alloy die-cast parts, a coating component on one outer wall of the grinding chamber, a liquid storage tank on one side of the grinding chamber containing polishing liquid, and a metering component inside the liquid storage tank; the coating component for uniformly coating the surface of the zinc alloy die-cast parts with polishing liquid; and the metering component for metering the release of polishing liquid according to the size of the zinc alloy die-cast parts.

[0006] Preferably, the application assembly includes a set of first telescopic rods disposed at the bottom of the liquid storage tank. The first telescopic rods are telescopic and have a set of limiting discs. A rotating rod is rotatably disposed at the bottom of the first telescopic rods. A first telescopic spring is sleeved on the first telescopic rods, with both ends of the first telescopic springs disposed on both sides of the limiting discs. Multiple sets of second telescopic rods are disposed on the rotating rods. The second telescopic rods are telescopic and have a contact plate at one end. A second telescopic spring is sleeved on the second telescopic rods, with one end of the second telescopic spring disposed on the rotating rod and the other end of the second telescopic spring disposed on one side of the contact plate.

[0007] Preferably, the metering component includes a set of mounting cylinders that pass through the liquid storage tank. A lifting rod is slidably disposed inside the mounting cylinder. The lifting rod is multi-sectioned and has a limit cover at its top. Mounting plates are disposed on both sides of the mounting cylinder. A connecting rod is rotatably disposed inside the mounting plate. A deflection arm is disposed on the connecting rod. A synchronizing gear is disposed at one end of the deflection arm and meshes with the lifting rod. A sealing plate is disposed at the other end of the deflection arm. A passage groove adapted to the sealing plate is opened inside the liquid storage tank.

[0008] Preferably, the metering component further includes a synchronizing arm disposed on one side of the bottom of the first telescopic rod, and a contact wheel is rotatably disposed at one end of the synchronizing arm, the contact wheel being able to contact the zinc alloy die casting.

[0009] Preferably, the surface of the contact plate has multiple sets of contact grooves, the multiple sets of contact plates can form a complete circle, and the height of the multiple sets of contact plates can be freely adjusted.

[0010] Preferably, a trigger plate is inclinedly provided on one side of the bottom of the first telescopic rod, and the trigger plate is in contact with the bottom of the lifting rod.

[0011] Preferably, the top of the grinding chamber is provided with multiple sets of connecting arms, and a collecting plate is provided on one side of each connecting arm, the collecting plate being located on one side of the grinding belt.

[0012] Preferably, the collecting plate has a triangular structure, a guide groove is provided on the inner wall of the collecting plate, a guide plate is provided on the top of the collecting plate, the guide plate is an arc that bends to one side, and a collecting groove is provided on the bottom of the collecting plate.

[0013] Preferably, the axial height of the contact plate is the same as the axial height of the contact wheel, and the contact wheel is located on one side of the contact plate.

[0014] A surface treatment process for precision die-cast zinc alloy parts, applied in any of the above-described surface treatment equipment for precision die-cast zinc alloy parts, includes the following steps:

[0015] S1. Transfer of die castings: The zinc alloy precision die castings are transported to the grinding chamber through the feed port, and the conveyor belt transports the die castings along the grinding chamber.

[0016] S2, Quantitative release of polishing slurry: The polishing slurry stored in the storage tank is released through a metering component;

[0017] S3. Apply polishing liquid to the surface: The application component uses the linkage of the first telescopic rod and the second telescopic rod to evenly apply polishing liquid to the surface of the die-casting part;

[0018] S4. Surface Grinding: In the grinding chamber, multiple grinding belts perform preliminary grinding on the surface of the die casting to remove burrs and irregular protrusions.

[0019] S5. Die-cast part output: The die-cast parts after surface treatment are conveyed out of the equipment through the discharge port to complete the surface treatment process. The bottom collection box simultaneously collects and recovers excess polishing liquid and grinding debris.

[0020] Compared with the prior art, the present invention provides a surface treatment device and process for precision die-cast zinc alloy parts, which has the following beneficial effects:

[0021] 1. This surface treatment equipment and process for precision zinc alloy die castings involves conveying the die castings into a grinding chamber via an inlet. A conveyor belt transports the castings along the grinding chamber, while multiple grinding belts efficiently grind the surface. A storage tank holds polishing fluid, which is precisely released according to the die casting's dimensions using a metering component. A coating component evenly coats the surface with the polishing fluid, ensuring full coverage. Finally, the ground die casting is output through an outlet. Waste generated during the process is collected and recycled in a bottom collection box. This equipment automates and integrates the surface treatment of precision zinc alloy die castings. The coordinated operation of the conveyor belt and grinding belts improves processing efficiency and results in more uniform grinding quality. The combination of the storage tank and metering component ensures more precise use of the polishing fluid, reducing waste. The coating component ensures even distribution of the polishing fluid, further enhancing the surface treatment effect. The bottom collection box effectively improves the working environment and enhances the equipment's environmental performance.

[0022] 2. This surface treatment equipment and process for precision zinc alloy die castings involves grinding the surface of the die castings. The die castings are conveyed by a conveyor and first come into contact with a contact plate. The contact plate has multiple sets of contact grooves to hold polishing fluid. These contact plates are arranged in a complete circle by adjusting their height and arrangement. While applying polishing fluid to the die casting surface, the equipment dynamically adapts to the shape of the die casting, achieving uniform coverage and effectively improving polishing quality. The flexible combination of multiple contact plates enhances the equipment's adaptability to complex surface structures and reduces polishing fluid waste during the application process, further improving the equipment's practicality and economy.

[0023] 3. This surface treatment equipment and process for precision zinc alloy die-cast parts uses a contact wheel to contact the zinc alloy die-cast part. The thickness of the zinc alloy die-cast part can change the height of the first telescopic rod. At this time, the trigger plate on one side of the first telescopic rod can be raised and lowered synchronously, thus achieving contact between the trigger plate and the bottom of the lifting rod, thereby pushing the lifting rod to slide inside the mounting cylinder. Therefore, the synchronous teeth meshing with the lifting rod can rotate on the axis of the connecting rod, thereby causing the deflection arm to drive the sealing plate to deflect synchronously, achieving the effect of separating the sealing plate from the liquid storage tank, causing the polishing liquid in the liquid storage tank to drip down, realizing the quantitative release of polishing liquid in the liquid storage tank. It can accurately control the release amount of polishing liquid according to the size of the zinc alloy die-cast part, effectively avoiding liquid waste, improving resource utilization, simplifying the operation process, and improving the automation level and processing efficiency of the equipment.

[0024] 4. This surface treatment equipment and process for precision die-cast zinc alloy parts features a collection plate located on one side of the grinding belt. This plate collects debris, dust, and polishing fluid generated during the grinding process. The collection plate has a triangular structure, with guide grooves on its inner wall guiding debris, dust, and polishing fluid to the bottom collection tank. A guide plate, curved to one side, is positioned at the top of the collection plate to guide scattered debris towards the guide groove, reducing spillage of debris, dust, and polishing fluid and improving collection efficiency. Finally, the debris is concentrated in the collection tank for easy subsequent cleaning and recycling. This system achieves efficient collection and centralized treatment of debris, dust, and polishing fluid during the grinding process. The triangular structure of the collection plate enhances its strength and stability. The guide grooves on the inner wall effectively prevent debris, dust, and polishing fluid from scattering within the cavity, maintaining the cleanliness of the equipment. The curved structure of the guide plate further improves the debris collection efficiency, ensuring that debris, dust, and polishing fluid can smoothly converge into the collection tank, reducing the environmental impact of debris spillage and improving the environmental performance and cleanliness of the equipment.

[0025] 5. This surface treatment equipment and process for precision die-cast zinc alloy parts achieves efficient operation of surface treatment through automated equipment. The precise design of the metering and coating components ensures accurate release and uniform coating of the polishing slurry, significantly improving surface finish. Simultaneously, it maximizes resource utilization. The rational layout of the collection plate and collection tank effectively collects debris, dust, and polishing slurry, reducing environmental pollution, keeping the equipment clean, and meeting environmental protection requirements. It can adapt to the processing needs of die-cast parts of different shapes and sizes, broadening its application range. The overall process is not only easy to operate and has low maintenance costs, but also improves product quality, making it suitable for the high-efficiency surface treatment needs of large-scale industrial production. Attached Figure Description

[0026] Figure 1 This is a frontal perspective view of the present invention;

[0027] Figure 2 This is a schematic diagram of the internal three-dimensional structure of the grinding cavity of the present invention;

[0028] Figure 3 This is a three-dimensional structural diagram of the coating component of the present invention;

[0029] Figure 4 For the present invention Figure 3 Enlarged 3D structural diagram at point A in the middle;

[0030] Figure 5 This is a three-dimensional structural diagram of the quantitative component of the present invention;

[0031] Figure 6 This is a schematic diagram of the three-dimensional structure of the grinding belt of the present invention;

[0032] Figure 7 This is a schematic diagram of the three-dimensional structure of the collecting plate of the present invention.

[0033] In the diagram: 1. Mounting frame; 2. Feed inlet; 3. Discharge outlet; 4. Conveyor frame; 5. Collection box; 6. Grinding chamber; 7. Conveyor belt; 8. Grinding belt; 9. Liquid storage tank; 10. First telescopic rod; 11. Limiting plate; 12. First telescopic spring; 13. Rotating rod; 14. Second telescopic rod; 15. Second telescopic spring; 16. Contact plate; 17. Contact groove; 18. Synchronizing arm; 19. Contact wheel; 20. Mounting cylinder; 21. Lifting rod; 22. Limiting cover; 23. Mounting plate; 24. Connecting rod; 25. Deflection arm; 26. Synchronizing gear; 27. Sealing plate; 28. Trigger plate; 29. ​​Collection plate; 30. Connecting arm; 31. Guide plate; 32. Guide groove; 33. Collection groove. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] As described in the background section, there are shortcomings in the existing technology. In order to solve the above-mentioned technical problems, this application proposes a surface treatment device and process for zinc alloy precision die castings.

[0036] In one typical implementation of this application, such as Figure 1-7 As shown, a surface treatment device for precision die-cast zinc alloy parts includes a mounting frame 1, an inlet 2 on one side of the mounting frame 1, and an outlet 3 on the other side of the mounting frame 1. Conveyor frames 4 are mounted on both the inlet 2 and the outlet 3. A grinding chamber 6 is located at the top of the mounting frame 1, and a collection box 5 is located at the bottom of the mounting frame 1. A conveyor belt 7 is installed inside the grinding chamber 6 to convey the zinc alloy die-cast parts entering the grinding chamber 6. Multiple grinding belts 8 are installed inside the grinding chamber 6 to grind the surface of the zinc alloy die-cast parts. A coating component is installed on one outer wall of the grinding chamber 6. A liquid storage tank 9 is installed on one side of the grinding chamber 6, storing polishing liquid. A metering component is installed inside the liquid storage tank 9. The coating component is used to evenly apply polishing liquid to the surface of the zinc alloy die-cast parts. The metering component can quantitatively release polishing liquid according to the size of the zinc alloy die-cast parts.

[0037] The zinc alloy precision die-casting parts are conveyed into the grinding chamber 6 through the feed inlet 2. The conveyor belt 7 is responsible for transporting the die-casting parts along the grinding chamber 6. Multiple grinding belts 8 perform efficient grinding on the surface of the die-casting parts. The liquid storage tank 9 stores polishing liquid, and the quantitative component precisely releases the polishing liquid according to the size of the die-casting parts. The coating component evenly coats the surface of the die-casting parts to ensure full coverage of the polishing liquid. Finally, the ground die-casting parts are output through the discharge port 3. Waste generated during the process is collected and recycled by the collection box 5 at the bottom. This equipment realizes the automation and integrated operation of the surface treatment of zinc alloy precision die-casting parts. The coordinated work of the conveyor belt 7 and the grinding belts 8 improves the processing efficiency and the grinding quality is more uniform. The cooperation between the liquid storage tank 9 and the quantitative component makes the use of polishing liquid more precise and reduces waste. At the same time, the coating component ensures the uniform distribution of polishing liquid, further improving the surface treatment effect. The collection box 5 at the bottom collects waste, effectively improving the working environment and enhancing the environmental performance of the equipment.

[0038] As a preferred embodiment of this example, please refer to the appendix. Figure 1 , Figure 3 and Figure 4 The application assembly includes a set of first telescopic rods 10 disposed at the bottom of the liquid storage tank 9. The first telescopic rods 10 are telescopic and have a set of limiting discs 11. A rotating rod 13 is rotatably disposed at the bottom of the first telescopic rods 10. A first telescopic spring 12 is sleeved on the first telescopic rods 10, with its two ends respectively disposed on both sides of the limiting discs 11. Multiple sets of second telescopic rods 14 are disposed on the rotating rod 13. The second telescopic rods 14 are telescopic and have a contact plate 16 at one end. A second telescopic spring 15 is sleeved on the second telescopic rods 14, with one end of the second telescopic spring 15 disposed on the rotating rod 13 and the other end disposed on one side of the contact plate 16. Multiple sets of contact grooves 17 are formed on the surface of the contact plate 16. The multiple sets of contact plates 16 can form a complete circle, and the height between the multiple sets of contact plates 16 can be freely adjusted. The axial height of the contact plate 16 is the same as the axial height of the contact wheel 19, and the contact wheel 19 is located on one side of the contact plate 16.

[0039] When polishing the surface of a zinc alloy die-cast part, the die-cast part is conveyed by a conveyor frame 4. The die-cast part first comes into contact with a contact plate 16. The surface of the contact plate 16 is arranged with multiple sets of contact grooves 17, which can hold polishing liquid. The multiple sets of contact plates 16 form a complete circle by adjusting their height and arrangement. While applying polishing liquid to the surface of the die-cast part, the plate dynamically adapts to the shape of the die-cast part to achieve uniform coverage, which effectively improves the polishing quality. The flexible combination of multiple sets of contact plates 16 enhances the equipment's adaptability to complex surface structures, while reducing polishing liquid waste during the application process, further improving the practicality and economy of the equipment.

[0040] As a preferred embodiment of this example, please refer to the appendix. Figures 3-5The metering component includes a set of mounting cylinders 20 that penetrate the storage tank 9. A lifting rod 21 is slidably mounted inside the mounting cylinder 20. The lifting rod 21 is multi-segmented and has a limit cover 22 at its top. Mounting plates 23 are mounted on both sides of the mounting cylinder 20. A connecting rod 24 is rotatably mounted inside the mounting plate 23. A deflection arm 25 is mounted on the connecting rod 24. A synchronizing gear 26 is mounted at one end of the deflection arm 25 and meshes with the lifting rod 21. A sealing plate 27 is mounted at the other end of the deflection arm 25. A passage groove adapted to the sealing plate 27 is opened in the storage tank 9. The metering component also includes a synchronizing arm 18 mounted on one side of the bottom of the first telescopic rod 10. A contact wheel 19 is rotatably mounted at one end of the synchronizing arm 18 and can contact the zinc alloy die-cast part. A trigger plate 28 is inclinedly mounted on one side of the bottom of the first telescopic rod 10. The trigger plate 28 and the bottom of the lifting rod 21 are connected. The contact wheel 19 contacts the zinc alloy die-casting part. The thickness of the zinc alloy die-casting part can change the height of the first telescopic rod 10. At this time, the trigger plate 28 on one side of the first telescopic rod 10 can be raised and lowered synchronously, so that the trigger plate 28 can contact the bottom of the lifting rod 21, thereby pushing the lifting rod 21 to slide in the mounting cylinder 20. Therefore, the synchronous gear 26 that meshes with the lifting rod 21 can rotate on the axis of the connecting rod 24, so that the deflection arm 25 drives the sealing plate 27 to deflect synchronously, realizing the effect of separating the sealing plate 27 from the liquid storage tank 9, so that the polishing liquid in the liquid storage tank 9 drips down, realizing the quantitative release of polishing liquid in the liquid storage tank 9. The release amount of polishing liquid can be precisely controlled according to the size of the zinc alloy die-casting part, effectively avoiding liquid waste, improving resource utilization, simplifying the operation process, and improving the automation level and processing efficiency of the equipment.

[0041] As a preferred embodiment of this example, please refer to the appendix. Figure 2 , Figure 6 and Figure 7 The top of the grinding chamber 6 is provided with multiple sets of connecting arms 30, and a collection plate 29 is provided on one side of the connecting arm 30. The collection plate 29 is located on one side of the grinding belt 8. The collection plate 29 has a triangular structure. A guide groove 32 is provided on the inner wall of the collection plate 29. A guide plate 31 is provided on the top of the collection plate 29. The guide plate 31 is an arc that bends to one side. A collection groove 33 is provided on the bottom of the collection plate 29.

[0042] The collecting plate 29 is located on one side of the grinding belt 8 and is used to collect the debris, dust, and polishing fluid generated during the grinding process. The collecting plate 29 has a triangular structure, and the guide groove 32 on its inner wall can guide the debris, dust, and polishing fluid to the collecting groove 33 at the bottom. The guide plate 31 is located at the top of the collecting plate 29 and has an arc-shaped structure that bends to one side. It is used to guide the scattered debris to gather towards the guide groove 32, reducing the spillage of debris, dust, and polishing fluid and improving the collection efficiency. Finally, the debris is concentrated into the collecting groove 33 for subsequent cleaning. The system enables efficient collection and centralized treatment of debris, dust, and polishing fluid during the grinding process. The triangular structure of the collection plate 29 enhances its strength and stability, while the inner wall guide groove 32 effectively prevents debris, dust, and polishing fluid from scattering within the cavity, maintaining the cleanliness of the equipment. The arc-shaped structure of the guide plate 31 further improves the collection efficiency of debris, ensuring that debris, dust, and polishing fluid can smoothly gather into the collection tank 33, reducing the environmental impact of debris spillage and improving the environmental performance and cleaning efficiency of the equipment.

[0043] A surface treatment process for precision die-cast zinc alloy parts, applied in any of the above-mentioned surface treatment equipment for precision die-cast zinc alloy parts, includes the following steps:

[0044] S1. Transfer of die-cast parts: The zinc alloy precision die-cast parts are transported to the grinding chamber 6 through the feed port 2. The conveyor belt 7 transports the die-cast parts along the grinding chamber 6, providing a stable transmission path for subsequent processing.

[0045] S2. Quantitative release of polishing fluid: The polishing fluid stored in the storage tank 9 is released through a quantitative component, which includes an installation cylinder 20, a lifting rod 21, a limit cover 22, a connecting rod 24, and a deflection arm 25, etc. It can accurately control the release amount of polishing fluid according to the size and surface characteristics of the die casting. The polishing fluid is evenly released through the groove and the sealing plate 27 to avoid waste.

[0046] S3. Applying polishing liquid to the surface: The application component, through the linkage of the first telescopic rod 10 and the second telescopic rod 14, evenly applies polishing liquid to the surface of the die-cast part. The multiple sets of contact grooves 17 of the contact plate 16 ensure uniform distribution of polishing liquid and improve surface finish.

[0047] S4. Surface Grinding: In the grinding chamber 6, multiple grinding belts 8 perform preliminary grinding on the surface of the die casting to remove burrs and irregular protrusions, while ensuring uniform processing.

[0048] S5. Die-cast part output: The die-cast parts after surface treatment are conveyed out of the equipment through the discharge port 3 to complete the surface treatment process. The bottom collection box 5 simultaneously collects and recovers excess polishing liquid and grinding debris for subsequent processing.

[0049] The automated equipment enables highly efficient surface treatment of zinc alloy precision die-cast parts. The precise design of the metering and coating components ensures accurate release and uniform coating of polishing fluid, significantly improving surface finish while maximizing resource utilization. The rational layout of the collection plate and collection tank effectively collects debris, dust, and polishing fluid, reducing environmental pollution, keeping the equipment clean, and meeting environmental protection requirements. It can adapt to the processing needs of die-cast parts of different shapes and sizes, broadening the application range. The overall process is not only easy to operate and has low maintenance costs, but also improves product quality, making it suitable for the high-efficiency surface treatment needs of large-scale industrial production.

[0050] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface treatment device for precision die-cast zinc alloy parts, comprising a mounting frame (1), wherein a feed inlet (2) is provided on one side of the mounting frame (1) and a discharge outlet (3) is provided on the other side of the mounting frame (1), and a conveyor frame (4) is provided on both the feed inlet (2) and the discharge outlet (3), characterized in that: The mounting frame (1) is provided with a grinding chamber (6) at the top and a collection box (5) at the bottom. A conveyor belt (7) is provided inside the grinding chamber (6) for conveying the zinc alloy die castings that enter the grinding chamber (6). Multiple grinding belts (8) are provided inside the grinding chamber (6) for grinding the surface of the zinc alloy die castings. A coating component is provided on one side of the outer wall of the grinding chamber (6). A liquid storage tank (9) is provided on one side of the grinding chamber (6) for storing polishing liquid. A metering component is provided inside the liquid storage tank (9). The coating component is used to evenly apply polishing liquid to the surface of zinc alloy die castings; The metering component can quantitatively release polishing fluid according to the size of the zinc alloy die casting; The application assembly includes a set of first telescopic rods (10) disposed at the bottom of the liquid storage tank (9). The first telescopic rods (10) are telescopic structures. A set of limiting discs (11) are disposed on the first telescopic rods (10). A rotating rod (13) is rotatably disposed at the bottom of the first telescopic rods (10). A first telescopic spring (12) is sleeved on the first telescopic rods (10). The two ends of the first telescopic spring (12) are respectively disposed on both sides of the limiting discs (11). A plurality of second telescopic rods (14) are disposed on the rotating rod (13). The second telescopic rods (14) are telescopic structures. A contact plate (16) is disposed at one end of the second telescopic rods (14). A second telescopic spring (15) is sleeved on the second telescopic rods (14). One end of the second telescopic spring (15) is disposed on the rotating rod (13). The other end of the second telescopic spring (15) is disposed on one side of the contact plate (16). The quantitative component includes a set of mounting cylinders (20) that are disposed through the liquid storage tank (9). A lifting rod (21) is slidably disposed inside the mounting cylinder (20). The lifting rod (21) is multi-sectioned. A limit cover (22) is provided on the top of the lifting rod (21). Mounting plates (23) are provided on both sides of the mounting cylinder (20). A connecting rod (24) is rotatably disposed inside the mounting plate (23). A deflection arm (25) is provided on the connecting rod (24). A synchronizing gear (26) is provided at one end of the deflection arm (25). The synchronizing gear (26) meshes with the lifting rod (21). A sealing plate (27) is provided at the other end of the deflection arm (25). A passage groove adapted to the sealing plate (27) is provided inside the liquid storage tank (9).

2. The surface treatment equipment for precision die-cast zinc alloy parts according to claim 1, characterized in that: The quantitative component also includes a synchronizing arm (18) disposed on one side of the bottom of the first telescopic rod (10). One end of the synchronizing arm (18) is rotatably provided with a contact wheel (19), which can contact the zinc alloy die casting.

3. The surface treatment equipment for precision die-cast zinc alloy parts according to claim 1, characterized in that: The surface of the contact plate (16) is provided with multiple sets of contact grooves (17), and the multiple sets of contact plates (16) can form a complete circle. The height of the multiple sets of contact plates (16) can be freely adjusted.

4. The surface treatment equipment for precision die-cast zinc alloy parts according to claim 1, characterized in that: A trigger plate (28) is inclinedly provided on one side of the bottom of the first telescopic rod (10), and the trigger plate (28) is in contact with the bottom of the lifting rod (21).

5. The surface treatment equipment for precision die-cast zinc alloy parts according to claim 2, characterized in that: The top of the grinding chamber (6) is provided with multiple sets of connecting arms (30), and a collection plate (29) is provided on one side of the connecting arm (30). The collection plate (29) is located on one side of the grinding belt (8).

6. The surface treatment equipment for precision die-cast zinc alloy parts according to claim 5, characterized in that: The collecting plate (29) has a triangular structure. A guide groove (32) is provided on the inner wall of the collecting plate (29). A guide plate (31) is provided on the top of the collecting plate (29). The guide plate (31) is an arc that bends to one side. A collecting groove (33) is provided on the bottom of the collecting plate (29).

7. The surface treatment equipment for precision die-cast zinc alloy parts according to claim 5, characterized in that: The axial height of the contact plate (16) is the same as the axial height of the contact wheel (19), and the contact wheel (19) is located on one side of the contact plate (16).

8. A surface treatment process for precision die-cast zinc alloy parts, applied in the surface treatment equipment for precision die-cast zinc alloy parts as described in any one of claims 1-7, characterized in that, Includes the following steps: S1. Transfer of die castings: The zinc alloy precision die castings are transported to the grinding chamber (6) through the feed port (2), and the conveyor belt (7) transports the die castings along the grinding chamber (6); S2, Quantitative release of polishing fluid: The polishing fluid stored in the storage tank (9) is released through the quantitative component; S3, Surface application of polishing liquid: The application component uses the linkage of the first telescopic rod (10) and the second telescopic rod (14) to uniformly apply polishing liquid to the surface of the die-casting part; S4. Surface grinding: In the grinding chamber (6), multiple grinding belts (8) perform preliminary grinding on the surface of the die casting to remove burrs and irregular protrusions. S5, die casting output: The die casting after surface treatment is conveyed out of the equipment through the discharge port (3) to complete the surface treatment process. The bottom collection box (5) simultaneously collects and recovers excess polishing liquid and grinding debris.

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