A corrosion resistance testing device for PFA film production

Abstract

This invention discloses a corrosion resistance testing device for PFA film production, relating to the field of film corrosion testing technology. It includes a housing, with a mounting plate fixedly connected inside the housing. A mounting frame is fixedly connected to the upper end of the mounting plate. A rotating column is penetrating the inner top wall of the mounting frame and rotatably connected to the mounting frame. A rotating plate is fixedly connected to the lower end of the rotating column. Multiple corrosive liquid droplet application mechanisms are provided on the rotating plate, evenly spaced along the circumference of the rotating plate. A rotating mechanism connected to the rotating column is provided on the mounting frame. A mounting groove is provided at the upper end of the mounting frame, and a limiting mechanism is provided inside the mounting groove. A partition plate is fixed inside the housing, located below the mounting plate. This invention, through the movement of the PFA film, enables different corrosive liquids to sequentially test the corrosion resistance of different positions on the PFA film, making the corrosion resistance testing process more efficient.

Description

Technical Field

[0001] This invention relates to the field of thin film corrosion testing technology, and more particularly to a corrosion resistance testing device for PFA thin film production. Background Technology

[0002] PFA film, short for polytetrafluoroethylene co-fluoroethylene, is a polymer film with excellent properties. PFA film has excellent chemical corrosion resistance and is resistant to almost all chemicals, including strong acids, strong alkalis, solvents and oxidants.

[0003] To ensure the quality of PFA films, both the films produced during manufacturing and the finished products must undergo rigorous corrosion resistance testing. However, most current PFA film testing methods are limited to independent testing of single film samples or corrosive solutions, which cannot perform testing on multiple PFA films and various corrosive solutions. Therefore, a corrosion resistance testing device for PFA film production needs to be designed. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a corrosion resistance testing device for PFA film production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A corrosion resistance testing device for PFA film production includes a housing. An installation plate is fixedly connected inside the housing. A mounting frame is fixedly connected to the upper end of the installation plate. A rotating column is rotatably connected to the inner top wall of the mounting frame. A rotating plate is fixedly connected to the lower end of the rotating column. Multiple corrosion liquid droplet adding mechanisms are provided on the rotating plate, evenly spaced along the circumference of the rotating plate. A rotating mechanism connected to the rotating column is provided on the mounting frame. A movable groove is provided at the upper end of the mounting frame, and a limiting mechanism is provided inside the movable groove. A partition located below the installation plate is fixed inside the housing. A detection camera is installed at the lower end of the partition. A fixed frame located below the partition is fixed inside the housing. A PFA film receiving and discharging mechanism is provided inside the fixed frame. A collection groove is provided on the inner bottom wall of the housing.

[0007] As a further improvement of the present invention, the corrosive liquid dripping mechanism includes a liquid storage tank disposed above the rotating plate, an electromagnetic liquid outlet valve disposed on the side wall of the liquid storage tank, and a dripping pipe connected to the electromagnetic liquid outlet valve, the dripping pipe penetrating downward through the rotating plate.

[0008] As a further improvement of the present invention, the rotating mechanism includes a third motor fixedly mounted on the upper end of the mounting frame, the output axis of the third motor passing downward through the mounting frame and fixedly connected to a first gear, and a second gear fixedly sleeved on the side wall of the rotating column, the second gear meshing with the first gear.

[0009] As a further improvement of the present invention, the limiting mechanism includes a limiting block disposed inside the movable groove, a spring fixedly connected to the side wall of the limiting block, the end of the spring away from the limiting block being fixedly connected to the inner wall of the movable groove, and a plurality of limiting holes cooperating with the limiting block being provided on the side wall of the rotating column, the plurality of limiting holes being equally spaced along the circumference of the rotating column.

[0010] As a further improvement of the present invention, the PFA film unwinding mechanism includes a movable frame disposed inside a fixed frame. Mounting grooves are provided on opposite side walls of the fixed frame, and movable structures are provided inside each mounting groove. The two movable structures are respectively connected to opposite side walls of the movable frame. An unwinding shaft and a rewinding shaft are rotatably connected to the inner wall of the movable frame. A PFA film is fitted onto the unwinding shaft, and a retaining ring is threaded onto the unwinding shaft. Two guide rods are rotatably connected to the inner wall of the movable frame, located between the unwinding shaft and the rewinding shaft. A clamping structure is provided inside the rewinding shaft. A second motor is provided on the outer side wall of the movable frame, and the output shaft of the second motor passes through the movable frame and is fixedly connected to the end of the rewinding shaft.

[0011] As a further improvement of the present invention, the movable structure includes a first motor fixedly installed on the inner wall of the mounting slot, the output shaft of the first motor being fixedly connected to a threaded rod, the end of the threaded rod away from the first motor being rotatably connected to the inner wall of the mounting slot, a threaded sleeve being threaded onto the threaded rod, and the threaded sleeve being fixedly connected to the side wall of the movable frame.

[0012] As a further improvement of the present invention, the clamping structure includes a clamping plate disposed inside the take-up shaft. A pressing block and two tension springs are fixedly connected to the upper end of the clamping plate. The two tension springs are symmetrically disposed on both sides of the pressing block. The end of the tension spring away from the clamping plate is fixedly connected to the inner wall of the take-up shaft. The take-up shaft has a device cavity inside. The end of the pressing block away from the clamping plate passes through the inner wall of the take-up shaft and extends into the inside of the device cavity. A push rod passes through the inner wall of the device cavity. The push rod is threadedly connected to the take-up shaft.

[0013] As a further improvement of the present invention, the top of the box is hinged to a cover plate by a second hinge, and the upper end of the cover plate is provided with a second latch lock.

[0014] As a further improvement of the present invention, a door is hinged to the side wall of the box body via a first hinge, and a first latch lock is provided on the side wall of the door.

[0015] The beneficial effects of this invention are:

[0016] By setting up multiple etching solution droplet adding mechanisms, various different etching solutions are added to multiple storage tanks, thereby enabling the sequential testing of the corrosion resistance of PFA films by different etching solutions, resulting in a more comprehensive testing effect.

[0017] By setting up a rotating plate and a rotating mechanism, the rotating column is driven to rotate, which in turn drives the rotating plate to rotate. The rotating plate can then drive the corrosion liquid dripping mechanism to rotate above the PFA film, enabling the sequential dripping of different corrosion liquids, thus making the corrosion resistance testing process more efficient.

[0018] By setting up a PFA film take-up and untake-down mechanism, the PFA film can be pulled by the rotation of the take-up shaft, thereby enabling the PFA film to move. Different corrosive liquids can be used to sequentially test the corrosion resistance of different positions on the PFA film. Furthermore, the loading and unloading of the PFA film is convenient, making the corrosion resistance testing process of the PFA film more convenient.

[0019] This invention enables different corrosive liquids to sequentially test the corrosion resistance of different positions on the PFA film by moving the PFA film, making the corrosion resistance testing process more efficient. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a corrosion resistance testing device for PFA film production proposed in this invention;

[0021] Figure 2 This is a schematic diagram of the fixed frame and PFA film take-up and take-up mechanism of a corrosion resistance testing device for PFA film production proposed in this invention.

[0022] Figure 3 This is a cross-sectional schematic diagram of the winding shaft and clamping structure of a corrosion resistance testing device for PFA film production proposed in this invention.

[0023] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 5 This is a schematic diagram of the limiting mechanism of a corrosion resistance testing device for PFA film production proposed in this invention;

[0025] Figure 6 This is a three-dimensional structural diagram of the winding shaft and clamping structure of a corrosion resistance testing device for PFA film production proposed in this invention.

[0026] In the diagram: 1. Box body, 2. Box door, 3. First hinge, 4. First latch lock, 5. Cover plate, 6. Second hinge, 7. Second latch lock, 8. Mounting bracket, 9. Liquid storage tank, 10. Electromagnetic liquid outlet valve, 11. Rotating plate, 12. Drip tube, 13. Mounting plate, 14. Partition plate, 15. Detection camera, 16. Fixed frame, 17. Movable frame, 18. Unwinding shaft, 19. Collection groove, 20. Guide rod, 21. Rewinding shaft, 22. Mounting groove, 23. First motor, 24. Threaded rod, 25. Threaded sleeve, 26. PFA film, 27. Retaining ring, 28. Second motor, 29. Clamping plate, 30. Tension spring, 31. Device cavity, 32. Extrusion block, 33. Top rod, 34. Third motor, 35. First gear, 36. Second gear, 37. Rotating column, 38. Movable groove, 39. Spring, 40. Limiting block, 41. Limiting hole. Detailed Implementation

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figures 1-6 A corrosion resistance testing device for PFA film production includes a housing 1. A cover plate 5 is hinged to the top of the housing 1 via a second hinge 6. A second latch lock 7 is provided at the upper end of the cover plate 5. A door 2 is hinged to the side wall of the housing 1 via a first hinge 3. A first latch lock 4 is provided on the side wall of the door 2. A mounting plate 13 is fixedly connected inside the housing 1. A mounting frame 8 is fixedly connected to the upper end of the mounting plate 13. A rotating column 37 is passed through the inner top wall of the mounting frame 8 and is rotatably connected to the mounting frame 8. A rotating plate 11 is fixedly connected to the lower end of the rotating column 37. Multiple corrosion liquid droplet application mechanisms are provided on the rotating plate 11, and these mechanisms are evenly spaced along the circumference of the rotating plate 11. A rotating mechanism connected to the rotating column 37 is provided on the mounting frame 8. The upper end is provided with a movable groove 38, and the movable groove 38 is provided with a limiting mechanism. The limiting mechanism includes a limiting block 40 set inside the movable groove 38. A spring 39 is fixedly connected to the side wall of the limiting block 40. The end of the spring 39 away from the limiting block 40 is fixedly connected to the inner wall of the movable groove 38. The side wall of the rotating column 37 is provided with a plurality of limiting holes 41 that cooperate with the limiting block 40. The plurality of limiting holes 41 are equally spaced along the circumference of the rotating column 37. The inside of the box 1 is fixed with a partition 14 located below the mounting plate 13. A detection camera 15 is installed at the lower end of the partition 14. The inside of the box 1 is fixed with a fixing frame 16 located below the partition 14. The inside of the fixing frame 16 is provided with a PFA film receiving and discharging mechanism. The inner bottom wall of the box 1 is provided with a collection groove 19.

[0029] In this invention, the corrosive liquid dripping mechanism includes a storage tank 9 disposed above a rotating plate 11. An electromagnetic discharge valve 10 is provided on the side wall of the storage tank 9. A dripping pipe 12 is connected to the electromagnetic discharge valve 10 and extends downward through the rotating plate 11. The rotating mechanism includes a third motor 34 fixedly mounted on the upper end of a mounting frame 8. The output shaft of the third motor 34 extends downward through the mounting frame 8 and is fixedly connected to a first gear 35. A second gear 36 is fixedly sleeved on the side wall of the rotating column 37 and meshes with the first gear 35.

[0030] The PFA film take-up and take-down mechanism includes a movable frame 17 disposed inside a fixed frame 16. Mounting grooves 22 are provided on opposite side walls of the fixed frame 16. Each mounting groove 22 contains a movable structure, which includes a first motor 23 fixedly mounted on the inner wall of the mounting groove 22. A threaded rod 24 is fixedly connected to the output shaft of the first motor 23. The end of the threaded rod 24 away from the first motor 23 is rotatably connected to the inner wall of the mounting groove 22. A threaded sleeve 25 is threaded onto the threaded rod 24 and fixedly connected to the side wall of the movable frame 17. The two movable structures are respectively connected to the movable frame 17. On opposite side walls, an unwinding shaft 18 and a take-up shaft 21 are rotatably connected to the inner wall of the movable frame 17. A PFA film 26 is fitted onto the unwinding shaft 18, and a retaining ring 27 is threaded onto the unwinding shaft 18. Two guide rods 20 are rotatably connected to the inner wall of the movable frame 17, and the two guide rods 20 are located between the unwinding shaft 18 and the take-up shaft 21. The take-up shaft 21 has a clamping structure inside. A second motor 28 is provided on the outer wall of the movable frame 17. The output shaft of the second motor 28 passes through the movable frame 17 and is fixedly connected to the end of the take-up shaft 21. The guide rods 20 can support and guide the PFA film 26.

[0031] The clamping structure includes a clamping plate 29 disposed inside the take-up shaft 21. A pressing block 32 and two tension springs 30 are fixedly connected to the upper end of the clamping plate 29. The two tension springs 30 are symmetrically disposed on both sides of the pressing block 32. The end of the tension spring 30 away from the clamping plate 29 is fixedly connected to the inner wall of the take-up shaft 21. The take-up shaft 21 has a device cavity 31 inside. The end of the pressing block 32 away from the clamping plate 29 passes through the inner wall of the take-up shaft 21 and extends into the device cavity 31. A push rod 33 passes through the inner wall of the device cavity 31. The push rod 33 is threadedly connected to the take-up shaft 21. One end of the PFA film 26 is placed inside the take-up shaft 21. By rotating the push rod 33, the push rod 33 moves and presses the pressing block 32. The movement of the pressing block 32 can drive the clamping plate 29 to move down, and the clamping plate 29 presses the PFA film 26 tightly.

[0032] In use, the PFA film 26 is fitted onto the unwinding shaft 18, and the PFA film 26 is fixed by screwing the retaining ring 27 onto the unwinding shaft 18. Then, one end of the PFA film 26 is placed inside the take-up shaft 21. By rotating the top rod 33, the top rod 33 moves and presses the extrusion block 32. The movement of the extrusion block 32 can drive the clamping plate 29 to move down, and the clamping plate 29 presses the PFA film 26 tightly.

[0033] Then start the first motor 23 to drive the threaded rod 24 to rotate. Since the threaded rod 24 is threadedly connected to the threaded sleeve 25, the threaded sleeve 25 can be driven to move. The movement of the threaded sleeve 25 drives the movable frame 17 to move into the box 1. Then close the box door 2 and fix the box door 2 by the first latch lock 4.

[0034] By opening the electromagnetic discharge valve 10, the corrosive liquid in the storage tank 9 can be dripped onto the PFA film 26 through the drip tube 12 for corrosion resistance testing, and the test results can be observed through the detection camera 15.

[0035] Then, the second motor 28 is started to drive the take-up shaft 21 to rotate, which can pull the PFA film 26 and thus move the PFA film 26. Then, the third motor 34 is started to drive the first gear 35 to rotate one revolution. When the first gear 35 meshes with the second gear 36, it can drive the rotating column 37 to rotate. The rotating column 37 drives the rotating plate 11 to rotate. The rotating plate 11 can drive the corrosion liquid droplet application mechanism to rotate above the PFA film 26, so that different corrosion liquids can be used to sequentially perform corrosion resistance testing on different positions of the PFA film 26.

[0036] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A corrosion resistance testing device for PFA film production, comprising a housing (1), characterized in that, An installation plate (13) is fixedly connected inside the housing (1). An installation frame (8) is fixedly connected to the upper end of the installation plate (13). A rotating column (37) is provided through the inner top wall of the installation frame (8). The rotating column (37) is rotatably connected to the installation frame (8). A rotating plate (11) is fixedly connected to the lower end of the rotating column (37). A plurality of corrosive liquid droplet adding mechanisms are provided on the rotating plate (11). The plurality of corrosive liquid droplet adding mechanisms are equally spaced along the circumference of the rotating plate (11). The installation frame (8) is provided with a connection to the rotating column (37). The rotating mechanism is connected. The upper end of the mounting frame (8) is provided with a movable groove (38). The movable groove (38) is provided with a limiting mechanism. The box (1) is fixed with a partition (14) located below the mounting plate (13). The lower end of the partition (14) is equipped with a detection camera (15). The box (1) is fixed with a fixed frame (16) located below the partition (14). The fixed frame (16) is provided with a PFA film take-up and take-down mechanism. The inner bottom wall of the box (1) is provided with a collection groove (19). The PFA film take-up and take-up mechanism includes a movable frame (17) disposed inside a fixed frame (16). Mounting grooves (22) are provided on opposite side walls of the fixed frame (16). Movable structures are provided inside each mounting groove (22), and these two movable structures are respectively connected to opposite side walls of the movable frame (17). An unwinding shaft (18) and a take-up shaft (21) are rotatably connected to the inner wall of the movable frame (17). A PFA film (26) is mounted on the unwinding shaft (18). The unwinding shaft (18) is threaded with a retaining ring (27), and two guide rods (20) are rotatably connected to the inner wall of the movable frame (17). The two guide rods (20) are located between the unwinding shaft (18) and the winding shaft (21). The winding shaft (21) is provided with a clamping structure inside. The outer wall of the movable frame (17) is provided with a second motor (28). The output shaft of the second motor (28) passes through the movable frame (17) and is fixedly connected to the end of the winding shaft (21). The clamping structure includes a clamping plate (29) disposed inside the take-up shaft (21). The upper end of the clamping plate (29) is fixedly connected to a pressing block (32) and two tension springs (30). The two tension springs (30) are symmetrically disposed on both sides of the pressing block (32). The end of the tension spring (30) away from the clamping plate (29) is fixedly connected to the inner wall of the take-up shaft (21). The take-up shaft (21) is provided with a device cavity (31). The end of the pressing block (32) away from the clamping plate (29) passes through the inner wall of the take-up shaft (21) and extends into the inside of the device cavity (31). A push rod (33) passes through the inner wall of the device cavity (31). The push rod (33) is threadedly connected to the take-up shaft (21).

2. The corrosion resistance testing device for PFA film production according to claim 1, characterized in that, The corrosive liquid dripping mechanism includes a storage tank (9) located above the rotating plate (11). An electromagnetic discharge valve (10) is provided on the side wall of the storage tank (9). A dripping pipe (12) is connected to the electromagnetic discharge valve (10) and the dripping pipe (12) extends downward through the rotating plate (11).

3. The corrosion resistance testing device for PFA film production according to claim 1, characterized in that, The rotating mechanism includes a third motor (34) fixedly installed on the upper end of the mounting frame (8). The output shaft of the third motor (34) passes through the mounting frame (8) downward and is fixedly connected to a first gear (35). A second gear (36) is fixedly sleeved on the side wall of the rotating column (37). The second gear (36) meshes with the first gear (35).

4. The corrosion resistance testing device for PFA film production according to claim 1, characterized in that, The limiting mechanism includes a limiting block (40) disposed inside the movable groove (38). A spring (39) is fixedly connected to the side wall of the limiting block (40). One end of the spring (39) away from the limiting block (40) is fixedly connected to the inner wall of the movable groove (38). The side wall of the rotating column (37) is provided with a plurality of limiting holes (41) that cooperate with the limiting block (40). The plurality of limiting holes (41) are equally spaced along the circumference of the rotating column (37).

5. The corrosion resistance testing device for PFA film production according to claim 1, characterized in that, The movable structure includes a first motor (23) fixedly installed on the inner wall of the mounting groove (22). The output shaft of the first motor (23) is fixedly connected to a threaded rod (24). The end of the threaded rod (24) away from the first motor (23) is rotatably connected to the inner wall of the mounting groove (22). A threaded sleeve (25) is threaded onto the threaded rod (24). The threaded sleeve (25) is fixedly connected to the side wall of the movable frame (17).

6. The corrosion resistance testing device for PFA film production according to claim 1, characterized in that, The top of the box (1) is hinged to a cover plate (5) via a second hinge (6), and the upper end of the cover plate (5) is provided with a second latch lock (7).

7. The corrosion resistance testing device for PFA film production according to claim 1, characterized in that, The side wall of the box (1) is hinged to a box door (2) by a first hinge (3), and the side wall of the box door (2) is provided with a first latch lock (4).

Images