Multi-station polishing bed for glass fiber reinforced plastic membrane shell
By incorporating the limiting blocks and curved rubber plates in the multi-station grinding machine, the adaptability of existing devices to membrane shells of different shapes and sizes has been solved, enabling stable clamping and efficient grinding of fiberglass membrane shells, and improving grinding accuracy and quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-03-17
AI Technical Summary
Existing fiberglass membrane shell grinding devices are difficult to adapt to membrane shells of different shapes and sizes, and have a limited range of clamping force adjustment, resulting in low grinding efficiency and unstable surface quality.
Design a multi-station grinding machine that uses a limit block and an arc-shaped rubber plate in conjunction with a limit ring and a limit rod. The machine achieves precise positioning and stable clamping of the diaphragm shell by pushing the cylinder and driving the cylinder. It combines a rotating support roller and a telescopic rod to adapt to different sizes, and uses springs and positioning columns to provide stable support, ensuring uniform pressure and smooth operation of the grinding roller.
It achieves stable clamping of membrane shells of different shapes and sizes, avoids displacement during the grinding process, improves grinding accuracy and uniformity, and enhances overall grinding quality and efficiency.
Smart Images

Figure CN223998070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fiberglass membrane shell processing technology, and in particular to a multi-station grinding machine for fiberglass membrane shells. Background Technology
[0002] RO reverse osmosis fiberglass membrane housings are a crucial component in reverse osmosis pure water production systems. These housings are designed to ensure the safe and stable operation of the reverse osmosis system. Depending on the inlet water pressure of the reverse osmosis membrane element, fiberglass membrane housings are divided into low-pressure and high-pressure types to ensure the membrane element's sealing, non-toxicity, and non-polluting properties, and to meet the requirements of long-term corrosion resistance. Publication number CN220446065U discloses a grinding and polishing device for fiberglass membrane housings, relating to the field of grinding and polishing technology. This utility model relates to the field of grinding and polishing technology, specifically a grinding and polishing device for fiberglass membrane housings, including an outer shell assembly. A placement platform is located at the top center of the outer shell assembly. The inner walls of the placement platform are equipped with bidirectional threaded rods via bearings. The improved grinding and polishing device, through the cooperation of a damper, an arc-shaped clamp, and threaded blocks, achieves stable fixation of the fiberglass membrane housing during processing. The arc-shaped clamp... The rubber pads on the inner side of the plate increase the contact area between the curved clamping plate and the fiberglass membrane shell, greatly improving the fixation effect of the fiberglass membrane shell during processing. The combination of a water pump, hose, and nozzle effectively reduces and purifies the dust generated during the grinding of the fiberglass membrane shell, solving the problem of dust scattering around and harming workers. This meets the grinding and polishing requirements of the fiberglass membrane shell. However, when grinding the outer surface of the fiberglass membrane shell, the clamping method used is relatively simple, making it difficult to adapt to membrane shells of different shapes and sizes. Furthermore, the limited range of clamping force adjustment causes some membrane shells to easily shift during grinding, resulting in low grinding efficiency and unstable surface quality, requiring improvement. Utility Model Content
[0003] The purpose of this utility model is to solve the technical problems mentioned in the background art.
[0004] This utility model adopts the following technical solution: A multi-station grinding machine for fiberglass membrane shells includes a machine base and a support base plate. A mounting seat and a telescopic rod are fixedly installed on the upper surface of the machine base. A push cylinder is fixedly installed on the side of the mounting seat. A moving stage is fixedly installed at the output end of the push cylinder. A support plate and a mounting frame are fixedly installed on the upper surface of the moving stage. A limit post and a drive cylinder are fixedly installed on the upper surface of the mounting frame. A limit ring is fixedly installed at the output end of the drive cylinder. A first motor is fixedly installed on the side of the support plate. A transmission gear is fixedly installed at the output end of the first motor. A driven gear is rotatably connected inside the support plate. A limit rod is slidably connected inside the driven gear. A connecting rod is fixedly installed at one end of the limit rod. A fixing plate is fixedly installed on the outer surface of the connecting rod.
[0005] Preferably, a connecting plate is rotatably connected to the side of the fixing plate, and a limiting block is rotatably connected to the inner side of the connecting plate. An arc-shaped rubber plate is fixedly installed on the surface of the limiting block. Here, the limiting block allows the arc-shaped rubber plate to better conform to membrane shells of different shapes and sizes, increasing the pressure and friction of the contact surface, ensuring that the membrane shell is stable and without displacement during the grinding process, and improving clamping stability.
[0006] Preferably, a rotating support roller is rotatably connected inside the supporting base plate, a support frame is fixedly installed at the top of the telescopic rod, a track is fixedly installed on the surface of the support frame, and a movable seat is slidably connected inside the track. Here, the track allows the movable seat to move flexibly within it, enabling all-around grinding of the membrane shell surface and improving grinding precision. During grinding, the rotating support roller supports and stabilizes the membrane shell, preventing displacement due to gravity and ensuring uniform grinding. Simultaneously, the telescopic rod can be adjusted according to the height of the membrane shell, making the grinding process more flexible and efficient, adapting to the needs of membrane shells of different sizes, and improving the overall grinding quality.
[0007] Preferably, the movable stage is slidably connected to the base, the limiting post is slidably connected to the limiting ring, and the limiting ring is rotatably connected to the limiting rod. Here, the limiting ring and limiting post ensure the limiting rod remains stable during rotation without affecting the normal operation of the drive cylinder.
[0008] Preferably, the transmission gear and the driven gear are meshed together, the driven gear is rotatably connected to the support plate, and the limiting block is slidably connected to the driven gear. Here, the transmission gear allows the power of the first motor to be transmitted to the driven gear, enabling the rotational grinding of the steel diaphragm shell.
[0009] Preferably, a first support column is fixedly mounted on the lower surface of the movable base, a spring is fixedly mounted on the lower surface of the first support column, a second support column is fixedly mounted on one end of the spring, a positioning column and a vertical plate are fixedly mounted on the surface of the second support column, a second motor is fixedly mounted on the surface of the vertical plate, and a grinding roller is fixedly mounted on the output end of the second motor. Here, the elastic cushioning of the spring ensures that the grinding roller applies uniform pressure on the surface of the membrane shell, avoiding excessive wear.
[0010] Preferably, the positioning column and the second support column are slidably connected, and the grinding roller is rotatably connected to the vertical plate. Here, the precise positioning of the positioning column provides stable support for the second support column, ensuring that the grinding roller runs smoothly on the surface of the film shell.
[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:
[0012] 1. In this utility model, a push cylinder is set to push the moving stage to a predetermined position to ensure accurate positioning of the membrane shell. A start-up drive cylinder is set to make the limiting ring slide inside the limiting post, thereby smoothly pulling the limiting rod. At the same time as pulling, the limiting block will slide inside the driven gear to ensure that the arc-shaped rubber plate is tightly attached to the inner surface of the membrane shell, thereby effectively fixing the membrane shell, preventing displacement during the grinding process, and ensuring grinding accuracy and uniformity.
[0013] 2. In this utility model, by setting a second support column and a spring, the grinding pressure can be effectively adjusted by utilizing an elastic buffer mechanism to avoid damage to the surface of the membrane shell and improve the grinding effect. The positioning column can provide stable support for the second support column to ensure that the grinding roller runs smoothly on the surface of the membrane shell. Attached Figure Description
[0014] Figure 1 A front view of a multi-station grinding machine for fiberglass membrane housings is provided for this utility model;
[0015] Figure 2 This utility model proposes a multi-station grinding machine for fiberglass membrane housings. Figure 1 Enlarged view of point A in the middle;
[0016] Figure 3 This utility model provides a partial cross-sectional schematic diagram of the limiting post in a multi-station grinding machine for fiberglass membrane housings;
[0017] Figure 4 This utility model provides an exploded view of the support plate in a multi-station grinding machine for fiberglass membrane housings;
[0018] Figure 5This utility model provides a partial cross-sectional view of the first support column in a multi-station grinding machine for fiberglass membrane housings.
[0019] Legend:
[0020] 1. Base; 2. Support base plate; 3. Mounting seat; 4. Telescopic rod; 5. Push cylinder; 6. Moving table; 7. Support plate; 8. Mounting frame; 9. Limiting post; 10. Drive cylinder; 11. Limiting ring; 12. First motor; 13. Transmission gear; 14. Driven gear; 15. Limiting rod; 16. Connecting rod; 17. Fixing plate; 18. Connecting plate; 19. Limiting block; 20. Arc-shaped rubber plate; 21. Rotating roller rod; 22. Support frame; 23. Track; 24. Moving seat; 25. First support column; 26. Spring; 27. Second support column; 28. Positioning post; 29. Vertical plate; 30. Second motor; 31. Grinding roller. Detailed Implementation
[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.
[0023] Example 1
[0024] Please see Figure 1-4This utility model provides a technical solution: a multi-station grinding machine for fiberglass membrane shells, including a base 1 and a support base plate 2. A mounting seat 3 and a telescopic rod 4 are fixedly installed on the upper surface of the base 1. A push cylinder 5 is fixedly installed on the side of the mounting seat 3. A moving table 6 is fixedly installed at the output end of the push cylinder 5. A support plate 7 and a mounting frame 8 are fixedly installed on the upper surface of the moving table 6. A limit post 9 and a drive cylinder 10 are fixedly installed on the upper surface of the mounting frame 8. A limit ring 11 is fixedly installed at the output end of the drive cylinder 10. A first motor 12 is fixedly installed on the side of the support plate 7. A transmission gear is fixedly installed at the output end of the first motor 12. A driven gear 14 is rotatably connected inside the wheel 13 and the support plate 7. A limit rod 15 is slidably connected inside the driven gear 14. A connecting rod 16 is fixedly installed at one end of the limit rod 15. A fixing plate 17 is fixedly installed on the outer surface of the connecting rod 16. A connecting plate 18 is rotatably connected to the side of the fixing plate 17. A limit block 19 is rotatably connected to the inner side of the connecting plate 18. An arc-shaped rubber plate 20 is fixedly installed on the surface of the limit block 19. The setting of the limit block 19 allows the arc-shaped rubber plate 20 to better fit the membrane shells of different shapes and sizes, increasing the pressure and friction of the contact surface, ensuring that the membrane shell is stable and without displacement during the grinding process, and improving the clamping effect. To maintain stability, a rotating support rod 21 is rotatably connected inside the support base plate 2. A support frame 22 is fixedly installed at the top of the telescopic rod 4, and a track 23 is fixedly installed on the surface of the support frame 22. A movable seat 24 is slidably connected inside the track 23. The track 23 allows the movable seat 24 to move flexibly within it, enabling all-around grinding of the membrane shell surface and improving grinding precision. During the grinding process, the rotating support rod 21 supports and stabilizes the membrane shell, preventing displacement due to gravity and ensuring uniform grinding. Simultaneously, the telescopic rod 4 can be adjusted according to the height of the membrane shell, making the grinding process more flexible and efficient, adapting to the needs of membrane shells of different sizes. To improve the overall grinding quality, the moving table 6 is slidably connected to the base 1, the limiting post 9 is slidably connected to the limiting ring 11, and the limiting ring 11 is rotatably connected to the limiting rod 15. The setting of the limiting ring 11 and the limiting post 9 can keep the limiting rod 15 stable when rotating, without affecting the normal operation of the drive cylinder 10. The transmission gear 13 is meshed with the driven gear 14, the driven gear 14 is rotatably connected to the support plate 7, and the limiting block 19 is slidably connected to the driven gear 14. The setting of the transmission gear 13 can transmit the power of the first motor 12 to the driven gear 14 to realize the rotational grinding of the steel diaphragm shell.
[0025] Example 2
[0026] Please see Figure 5A first support column 25 is fixedly installed on the lower surface of the movable seat 24. A spring 26 is fixedly installed on the lower surface of the first support column 25. A second support column 27 is fixedly installed at one end of the spring 26. A positioning column 28 and a vertical plate 29 are fixedly installed on the surface of the second support column 27. A second motor 30 is fixedly installed on the surface of the vertical plate 29. A grinding roller 31 is fixedly installed at the output end of the second motor 30. Through the elastic buffer of the spring 26, the grinding roller 31 is ensured to apply pressure evenly on the surface of the membrane shell, avoiding excessive wear. The positioning column 28 and the second support column 27 are slidably connected to each other. The grinding roller 31 is rotatably connected to the vertical plate 29. Through the precise positioning of the positioning column 28, stable support can be provided for the second support column 27, ensuring that the grinding roller 31 runs smoothly on the surface of the membrane shell.
[0027] Working principle: The fiberglass membrane is transported to the rotating support rod 21 between the two machine bases 1 by a robotic arm or handling device, and its axis is aligned with the connecting rod 16. Then, the push cylinder 5 is activated to push the moving table 6 forward. When the arc-shaped rubber plate 20 moves into the interior of the fiberglass membrane, the drive cylinder 10 is activated to drive the limiting ring 11 to move inside the limiting post 9 and to the driven gear 14. At the same time, the limiting ring 11 drives the limiting rod 15 to move towards the drive cylinder 10. Simultaneously, the fixing plate 17 pushes the limiting block 19 to move outward on the driven gear 14 until the arc-shaped rubber plate 20 is completely in contact with the inner wall of the fiberglass membrane. Then, the first motor 12 can be started. The drive gear 13 rotates, which in turn drives the driven gear 14 to rotate, causing the fiberglass membrane shell to rotate accordingly. During the rotation of the fiberglass membrane shell, the rotating support rod 21 provides stable support, ensuring that the membrane shell is evenly stressed and preventing deviation. At this time, the second motor 30 can be started to make the grinding roller 31 start to rotate to grind the fiberglass membrane shell. During the grinding process, the telescopic rod 4 and the track 23 can make fine adjustments to the moving seat 24 to ensure that the grinding roller 31 is always in close contact with the surface of the membrane shell, improving the grinding accuracy. At the same time, the spring 26 set inside the first support column 25 can effectively absorb the vibration generated during the grinding process, ensuring the stability and consistency of the grinding process, thereby improving the smoothness and uniformity of the membrane shell surface.
[0028] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.
Claims
1. A multi-station polishing bed for glass fiber reinforced plastic membranes, comprising a base (1) and a support bed (2), characterized in that: The upper surface of the base (1) is fixedly installed with a mounting seat (3) and a telescopic rod (4), the side surface of the mounting seat (3) is fixedly installed with a push cylinder (5), the output end of the push cylinder (5) is fixedly installed with a moving table (6), the upper surface of the moving table (6) is fixedly installed with a supporting plate (7) and a mounting frame (8), the upper surface of the mounting frame (8) is fixedly installed with a limiting column (9) and a drive cylinder (10), the output end of the drive cylinder (10) is fixedly installed with a limiting ring (11), the side surface of the supporting plate (7) is fixedly installed with a first motor (12), the output end of the first motor (12) is fixedly installed with a transmission gear (13), the inside of the supporting plate (7) is rotatably connected with a driven gear (14), the inside of the driven gear (14) is slidably connected with a limiting rod (15), one end of the limiting rod (15) is fixedly installed with a connecting rod (16), the outer surface of the connecting rod (16) is fixedly installed with a fixed plate (17).
2. The multi-station sander for fiberglass membrane shells of claim 1, wherein: The side surface of the fixed plate (17) is rotatably connected with a connecting plate (18), the inner side of the connecting plate (18) is rotatably connected with a limiting block (19), the surface of the limiting block (19) is fixedly installed with an arc-shaped rubber plate (20).
3. The multi-station sander for fiberglass membrane shells of claim 1, wherein: The inside of the supporting base plate (2) is rotatably connected with a rotating supporting wheel rod (21), the top end of the telescopic rod (4) is fixedly installed with a supporting frame (22), the surface of the supporting frame (22) is fixedly installed with a track (23), the inside of the track (23) is slidably connected with a moving seat (24).
4. The multi-station sander for fiberglass membrane shells of claim 1, wherein: The moving table (6) and the base (1) are slidably connected, the limiting column (9) and the limiting ring (11) are slidably connected, and the limiting ring (11) and the limiting rod (15) are rotatably connected.
5. The multi-station sander for fiberglass-reinforced plastic membranes as defined in claim 2, wherein: The transmission gear (13) and the driven gear (14) are meshedly connected, the driven gear (14) and the supporting plate (7) are rotatably connected, and the limiting block (19) and the driven gear (14) are slidably connected.
6. The multi-station sander for fiberglass-reinforced plastic membranes as defined in claim 3, wherein: The lower surface of the moving seat (24) is fixedly installed with a first supporting column (25), the lower surface of the first supporting column (25) is fixedly installed with a spring (26), one end of the spring (26) is fixedly installed with a second supporting column (27), the surface of the second supporting column (27) is fixedly installed with a positioning column (28) and a vertical plate (29), the surface of the vertical plate (29) is fixedly installed with a second motor (30), the output end of the second motor (30) is fixedly installed with a polishing roller (31).
7. The multi-station sander for fiberglass-reinforced plastic membranes as defined in claim 6, wherein: The positioning column (28), the second supporting column (27) and the second supporting column (27) are slidably connected, and the polishing roller (31) and the vertical plate (29) are rotatably connected.
Citation Information
Patent Citations
Grinding and polishing device for glass fiber reinforced plastic membrane shell
CN220446065U