A multifunctional membrane defect detection device for MOFs

Abstract

The application relates to the technical field of new material defect detection, in particular to a MOFs multifunctional film defect detection equipment, which comprises a support frame body, a controller installed on the left side of the support frame body, a display screen arranged above the controller, an industrial camera installed on the support frame body through a mounting frame, and two groups of upper adjusting rollers, guide rollers and lower supporting rollers symmetrically installed on the inner side of the support frame body. The MOFs multifunctional film defect detection equipment can cut off the defective area through the cooperation of two groups of cutting knife mechanisms, and the width of the cut-off MOFs multifunctional film is smaller than the width of the whole MOFs multifunctional film through the size setting of the cutting knife mechanism, so that the whole MOFs multifunctional film is not in the disconnected state, and then the whole MOFs multifunctional film that passes the detection can be conveniently wound and placed, so as to be cut and processed again for use in the later period.

Description

Technical Field

[0001] This invention relates to the field of new material defect detection technology, specifically to a multifunctional MOF membrane defect detection device. Background Technology

[0002] MOFs are porous crystalline materials assembled from metal ions and organic ligands. They have high specific surface area, adjustable pore structure, and diverse functions. The thin films made from them are called MOF multifunctional membranes, a new type of material. They have functions such as gas adsorption and conversion, and ion adsorption and separation. Therefore, MOF multifunctional membranes are widely used in battery technology, gas separation technology, and water treatment technology. During the production of MOF multifunctional membranes, defect detection equipment is required to detect defects and determine whether the production is qualified.

[0003] For example, the patent disclosed in the prior art with publication number "CN117805108A" is entitled "A Non-Contact Hollow Fiber Membrane Integrity Detection Device". It discloses that after gas is introduced, the membrane attached to the end face of the hollow fiber membrane assembly will undulate to varying degrees due to the increased gas pressure inside the cavity. The membrane at the location of the defect wire has a relatively large bulge. A line laser emits a laser beam that irradiates the membrane, causing diffuse reflection. An imaging system converges part of the reflected light at another angle, and the light spot is imaged in the camera. When the membrane surface undulates, the angle of the reflected light also changes, and the image formed by the light spot will move accordingly. Furthermore, the imaging position and the position of the laser axis have a unique correspondence. After measuring the center position of the light spot, the depth coordinates of the light spot can be calculated through the optical geometric relationship between the light spot and its image point position, thus obtaining the depth information of the membrane surface. After processing by the host computer, the defect location coordinates are obtained. Another example is the prior art with publication number " The patent disclosed in CN119198741A, entitled "A Surface Defect Detection Device for Membranes," describes a method for adjusting the position of an industrial CCD camera. This involves activating a servo motor, which drives a lead screw to slide. The lead screw then drives a nut seat, which in turn drives an annular plate and a fixed plate. The fixed plate then drives the industrial CCD camera, facilitating position adjustment and improving detection efficiency. Tightening a threaded column pushes a bearing and a connecting frame to slide, bringing a concave plate into contact with the conveyor belt surface. This prevents the conveyor belt from shifting over time, improving usability. When adjusting the height of the industrial CCD camera, sliding a sliding column drives a convex column to slide. This movement separates the convex column from the limiting hole on the lifting column surface. Sliding the lifting column then drives the fixed plate and the industrial CCD camera to slide, further facilitating height adjustment and enhancing practicality.

[0004] The existing MOFs multifunctional membrane defect detection equipment described above uses a conveyor belt for transport. When a defect is detected in the MOFs multifunctional membrane, it must either be marked or cut off. If cutting is required, an external cutting mechanism must be found, which is cumbersome and results in slow defect detection efficiency. Therefore, we propose a MOFs multifunctional membrane defect detection equipment to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a MOFs multifunctional membrane defect detection device to solve the problem mentioned in the background art. Currently available MOFs multifunctional membrane defect detection devices on the market use conveyor belts for transport. When a defect is detected in the MOFs multifunctional membrane, it is necessary to either mark it or cut off the defective MOFs multifunctional membrane. If cutting is required, an external cutting mechanism must be found, which is cumbersome and results in slow defect detection efficiency.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional MOF membrane defect detection device, comprising a support frame and a controller installed on its left side, with a display screen placed above the controller, and an industrial camera mounted on the top of the support frame via a mounting bracket. Two sets of upper adjusting rollers, guide rollers, and lower support rollers are symmetrically installed on the inner side of the support frame, and a feeding roller is installed on the rear side of the support frame, and a winding roller is installed on the front side of the support frame. The left side of a support plate located between the two lower support rollers is connected to the support frame, and a cutting mechanism is provided above the support plate. The right side of the cutting mechanism is connected to a bearing frame installed inside the right side of the support frame.

[0007] Preferably, a guide roller is provided below the outer side of the upper adjusting roller, and a lower support roller is provided directly below the upper adjusting roller. Both the left and right ends of the upper adjusting roller are connected through the vertical guide column installed inside the support frame. A connecting spring is nested on the outer side of the vertical guide column.

[0008] Preferably, a groove is provided on the right side of the pallet, the width of which is greater than the maximum distance between the two cutting blade mechanisms, and there is a gap between the right side of the pallet and the inner wall of the right side of the support frame.

[0009] Preferably, the right side of the support frame is slidably connected to a groove inside the right side of the support frame, and the upper right side of the support frame is connected to an electric push rod inside the groove inside the right side of the support frame.

[0010] Preferably, a bidirectional lead screw is installed inside the left side of the support frame, and a cutting blade mechanism is threadedly connected to the outer side of the bidirectional lead screw. A laser rangefinder is installed on the front right side of the cutting blade mechanism at the rear.

[0011] Preferably, the cutting blade mechanism is arranged in a "7" shape, and the left sides of the two cutting blade mechanisms are fitted together.

[0012] Preferably, the front and rear sides of the support frame are slotted and equipped with horizontal guide columns in the shape of "T". A reset spring is nested on the outer side of one end of the horizontal guide column, and the outer side of the other end of the horizontal guide column is slidably connected through the vertical surface of the adjustment plate. The adjustment plate is set in an inverted "V" shape, and an upper adjustment roller is set below the inclined surface of the adjustment plate. The upper adjustment roller forms a lifting structure through the adjustment plate.

[0013] Preferably, self-push plates are symmetrically installed on the inner right side of the support frame, and the upper surface of the self-push plates is set as an inclined surface. A vertical surface of an adjustment plate is set above the self-push plates, and the adjustment plate forms a horizontal sliding structure through the self-push plates.

[0014] Preferably, a dust suction pipe is installed on the support frame on the front side of the feeding roller, and a rotating rod is installed through the support frame below the dust suction pipe. A push plate is movably connected to the rear side of the rotating rod via the rotating frame. A limit plate is installed on the inner rear side of the support frame, and the lower part of the rotating frame is in contact with the rubber pad above the limit plate to limit the rotation frame.

[0015] Preferably, a convex plate is installed on the outer side of the front end of the rotating rod, and six sets of convex rods are installed at equal intervals on the outer side of the front end of the rear guide roller, and a convex plate is provided below the convex rods. The convex plate forms a rotating structure through the convex rods, and a spiral spring is nested and connected to the outer side of the front end of the rotating rod.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This MOFs multifunctional membrane defect detection device, through the cooperation of two sets of cutting blade mechanisms, can cut off the defective area. Simultaneously, by setting the size of the cutting blade mechanism, the width of the cut MOFs multifunctional membrane is smaller than the width of the entire MOFs multifunctional membrane, thus preventing the entire MOFs multifunctional membrane from being in a broken state. This facilitates the winding and placement of the qualified MOFs multifunctional membrane for later unwinding and cutting for further use. The specific details are as follows:

[0017] Defect detection of MOFs multifunctional films is performed using industrial cameras and light sources. When defects are detected in some areas, the defective areas can be cut off by the cooperation of two sets of cutting blade mechanisms. At the same time, by setting the size of the cutting blade mechanism, the width of the cut MOFs multifunctional film is smaller than the width of the entire MOFs multifunctional film. Therefore, the entire MOFs multifunctional film will not be in a broken state. This makes it easier to roll up and place the entire qualified MOFs multifunctional film for later unrolling and cutting processing.

[0018] By using a laser rangefinder in conjunction with a two-way lead screw, the distance between the two cutting blade mechanisms with a “7” shaped structure can be adjusted, which makes it easier to adjust the cutting position according to the location of the defect.

[0019] The downward movement of the adjusting plate applies a downward thrust to the upper adjusting roller, which in turn applies pressure to the MOFs multifunctional film above the lower support roller. Therefore, the cooperation of the two sets of upper adjusting rollers and lower support rollers can clamp and flatten the two ends of the MOFs multifunctional film to be cut, thus improving the accuracy of cutting the MOFs multifunctional film.

[0020] By using the guide roller and the convex rod on the rear side, the rotating rod can be driven to reciprocate at a certain angle. This causes the rotating rod to drive the push plate to reciprocate up and down. Therefore, the push plate can apply a reciprocating upward thrust to the MOFs multifunctional film below the guide roller on the rear side. This, in turn, can generate a certain shaking force on the MOFs multifunctional film, so that impurities on the surface of the MOFs multifunctional film can be separated well. This makes it easy for the dust suction pipe to suck up the impurities for processing, and avoids impurities remaining on the MOFs multifunctional film, which would affect the accuracy of subsequent defect detection. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the right-side structure of the support frame of the present invention;

[0024] Figure 4 This is a schematic diagram of the separation structure of the pallet and cutting blade mechanism of the present invention;

[0025] Figure 5 This is a schematic cross-sectional view of the connection between the support frame and the adjustment plate of the present invention;

[0026] Figure 6 This is a schematic diagram of the right-side structure of the adjustment plate of the present invention;

[0027] Figure 7 For the present invention Figure 1 Enlarged structural diagram at point A in the middle;

[0028] Figure 8 This is a schematic diagram of the rear side of the support frame structure of the present invention from below;

[0029] Figure 9 For the present invention Figure 2 Enlarged structural diagram at point B;

[0030] Figure 10 This is a schematic diagram of the three-dimensional structure of the push plate of the present invention.

[0031] In the diagram: 1. Support frame; 2. Mounting frame; 3. Industrial camera; 4. Feeding roller; 5. Rewinding roller; 6. Display screen; 7. Controller; 8. Bearing frame; 9. Cutting knife mechanism; 10. Upper adjusting roller; 11. Guide roller; 111. Protruding rod; 12. Lower support roller; 13. Dust suction pipe; 14. Electric push rod; 15. Support plate; 16. Bidirectional lead screw; 17. Laser rangefinder; 18. Adjusting plate; 19. Horizontal guide column; 20. Return spring; 21. Self-pushing plate; 22. Vertical guide column; 23. Connecting spring; 24. Rotating rod; 241. Protruding plate; 242. Spiral spring; 25. Rotating frame; 26. Push plate; 27. Limiting plate. Detailed Implementation

[0032] 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.

[0033] Please see Figures 1-10 The present invention provides the following technical solution:

[0034] Example 1: The MOFs multifunctional membrane defect detection device in this example can remove defective areas during the detection process, thus facilitating the subsequent winding of the entire defect-free MOFs multifunctional membrane for later use. See attached diagram for the specific structure. Figures 1-7As shown, the device includes a support frame 1 and a controller 7 mounted on its left side. A display screen 6 is placed above the controller 7. An industrial camera 3 is mounted on the top of the support frame 1 via a mounting bracket 2. Two sets of upper adjusting rollers 10, guide rollers 11, and lower support rollers 12 are symmetrically mounted on the inner side of the support frame 1. A feeding roller 4 is mounted on the rear side of the support frame 1, and a take-up roller 5 is mounted on the front side. A support plate 15, positioned between the two lower support rollers 12, is connected to the support frame 1 on its left side. A cutting mechanism 9 is positioned above the support plate 15. The right side is connected to the support frame 8 installed inside the right side of the support frame 1. A guide roller 11 is provided below the outer side of the upper adjusting roller 10, and a lower support roller 12 is provided directly below the upper adjusting roller 10. Both ends of the upper adjusting roller 10 are connected through to the vertical guide column 22 installed inside the support frame 1. A connecting spring 23 is nested on the outer side of the vertical guide column 22. A groove is provided on the right side of the support plate 15. The width of the groove is greater than the maximum distance between the two cutting blade mechanisms 9. There is a gap between the right side of the support plate 15 and the inner wall of the right side of the support frame 1. The right side of the support frame 8 is... The support frame 8 is slidably connected to the slot inside the right side of the support frame 1, and the upper right side of the support frame 8 is connected to the electric push rod 14 inside the slot inside the right side of the support frame 1. A double-acting screw 16 is installed inside the left side of the support frame 8, and a cutting blade mechanism 9 is threadedly connected to the outer side of the double-acting screw 16. A laser rangefinder 17 is installed on the front right side of the cutting blade mechanism 9. The cutting blade mechanism 9 is arranged in a "7" shape, and the left sides of the two cutting blade mechanisms 9 are fitted together. The front and rear sides of the support frame 8 are slotted with horizontal guide columns 19 in a "T" shape. A return spring 20 is nested on the outer side of one end of the guide post 19, and the other end of the horizontal guide post 19 is slidably connected to the vertical surface of the adjusting plate 18. The adjusting plate 18 is set in an inverted "V" shape. An upper adjusting roller 10 is set below the inclined surface of the adjusting plate 18. The upper adjusting roller 10 forms a lifting structure through the adjusting plate 18. A self-push plate 21 is symmetrically installed on the inner wall of the right side of the support frame 1. The upper surface of the self-push plate 21 is set on an inclined surface, and the vertical surface of the adjusting plate 18 is set above the self-push plate 21. The adjusting plate 18 forms a horizontal sliding structure through the self-push plate 21.

[0035] First, the rolled MOFs multifunctional film is installed on the feed roller 4. Then, one end of the rolled MOFs multifunctional film is pulled forward, passing under the rear guide roller 11 and above the two lower support rollers 12, and then under the front guide roller 11, and installed on the take-up roller 5. Next, the feed roller 4 rotates to feed the film, and the take-up roller 5 rotates to take the film. When the feed roller 4 and the take-up roller 5 stop rotating, the industrial camera 3 begins to perform defect detection. At the same time, in conjunction with the light source installed inside the support frame 1, the industrial camera 3 transmits the detected data to the central processing module in the controller 7. After analysis and comparison, when crack defects, hole defects or other defects are found, the central processing module obtains the coordinates of the defect location. Since this part is existing technology, it will not be described in detail here. Then, the central processing module controls the motor in the support frame 8 to rotate. The motor drives the bidirectional lead screw 16 to rotate. When the bidirectional lead screw 16 rotates, it drives the two cutting blade mechanisms 9 to move inward at the same time. Therefore, the cutting position of the two cutting blade mechanisms 9 can be adjusted according to the defect coordinate position.

[0036] After adjustment, the electric push rod 14 is activated, causing the support frame 8 and the cutting blade mechanism 9 to move downwards together. The support frame 8 also causes the adjusting plate 18 to move downwards together. Since the elastic coefficient of the return spring 20 is greater than that of the connecting spring 23, the adjusting plate 18 applies a downward force to the upper adjusting roller 10, causing both ends of the upper adjusting roller 10 to move downwards outside the vertical guide column 22. The connecting spring 23 is compressed and stores force. When the upper adjusting roller 10 descends to its lowest point, the two sets of upper adjusting rollers 10, in cooperation with the lower support roller 12, clamp and flatten the two ends of the MOFs multifunctional film to be cut, fixing them in place. At the same time, the support frame 8 continues to lower the cutting blade mechanism 9 and the adjusting plate 18. At this point, the lower end of the vertical surface of the adjusting plate 18 contacts the inclined surface of the self-push plate 21, and the self-push plate 21 applies an outward pushing force to the adjusting plate 18. The adjusting plate 18 then slides outwards outside the horizontal guide column 19, and the return spring... Spring 20 stores energy, so the adjusting plate 18, which slides to the right while descending, will not continue to apply downward pressure to the upper adjusting roller 10. Then, the cutting mechanism 9 descends to cut the defective MOFs multifunctional film corresponding to the groove on the right side of the support plate 15. The defective MOFs multifunctional film falls downward. Since the length of the cutting mechanism 9 is less than the width of the MOFs multifunctional film, the MOFs multifunctional film on the support plate 15 is not completely cut into two sections, which makes it easier to wind up the entire MOFs multifunctional film later by the winding roller 5. Then, as shown above, the inspection operation continues. This application replaces the traditional marking with cutting, so when using the MOFs multifunctional film after the inspection, the staff does not need to spend a long time looking for the marking. They only need to see the cut notch and not use the MOFs multifunctional film around the cut notch. The operation is convenient.

[0037] Example 2: The MOFs multifunctional membrane defect detection device in this example, based on Example 1, can improve the dust collection quality of the suction pipe 13, thereby facilitating the pretreatment of the MOFs multifunctional membrane and avoiding impurities remaining on the MOFs multifunctional membrane that would affect the accuracy of subsequent defect detection. The specific structure is shown in the attached diagram. Figures 8-10 As shown, a dust suction pipe 13 is installed on the support frame 1 on the front side of the feeding roller 4, and a rotating rod 24 is installed through the support frame 1 below the dust suction pipe 13. A push plate 26 is movably connected to the rear side of the rotating rod 24 through a rotating frame 25. A limit plate 27 is installed on the inner rear side of the support frame 1. The lower part of the rotating frame 25 is in contact with the rubber pad above the limit plate 27 to limit the rotation frame 25. A protruding plate 241 is installed on the outer front end of the rotating rod 24. Six sets of protruding rods 111 are installed at equal intervals on the outer front end of the rear guide roller 11. A protruding plate 241 is provided below the protruding rods 111. The protruding plate 241 forms a rotating structure through the protruding rods 111. A spiral spring 242 is nested on the outer front end of the rotating rod 24.

[0038] When the MOFs multifunctional film is conveyed forward, it automatically drives the rear guide roller 11 and the protruding rod 111 to rotate. When one of the protruding rods 111 rotates to contact the protruding plate 241, it applies a thrust to the protruding plate 241, causing the protruding plate 241 to drive the rotating rod 24 to rotate. The spiral spring 242 stores energy, and the rotating rod 24 drives the rotating frame 25 and the push plate 26 to rotate. Due to the weight of the push plate 26, it remains horizontal. Then, the push plate 26 applies an upward thrust to the MOFs multifunctional film above it. When one of the protruding rods 111 rotates to contact the protruding plate 241... During separation, the stored force of the spiral spring 242 automatically drives the rotating rod 24 to rotate in the opposite direction and reset. At this time, the limiting plate 27 with rubber pads installed above limits the rotating frame 25, so that the rotating frame 25 rotates in the opposite direction and is in a horizontal state. This operation is repeated, causing the push plate 26 to rise and fall back and forth. Therefore, the push plate 26 applies an upward thrust to the MOFs multifunctional membrane, causing the MOFs multifunctional membrane to generate a certain shaking force, which effectively separates the impurities on the surface of the MOFs multifunctional membrane. Then, the impurities are effectively sucked away by the dust suction pipe 13 for processing, so as to avoid the impurities remaining on the MOFs multifunctional membrane and affecting the accuracy of subsequent defect detection.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multifunctional MOF membrane defect detection device, comprising a support frame (1) and a controller (7) mounted on its left side, wherein a display screen (6) is placed above the controller (7), and an industrial camera (3) is mounted above the support frame (1) via a mounting bracket (2), characterized in that: Two sets of upper adjusting rollers (10), guide rollers (11) and lower support rollers (12) are symmetrically installed on the inner side of the support frame (1). A feeding roller (4) is installed on the rear side of the support frame (1), and a winding roller (5) is installed on the front side of the support frame (1). The left side of the pallet (15) between the two lower support rollers (12) is connected to the support frame (1). A cutting blade mechanism (9) is provided above the pallet (15), and the right side of the cutting blade mechanism (9) is connected to the bearing frame (8) installed inside the right side of the support frame (1). A groove is provided on the right side of the pallet (15), and the width of the groove is greater than the maximum distance between the two cutting blade mechanisms (9). There is a gap between the right side of the pallet (15) and the inner wall of the right side of the support frame (1). The cutting blade mechanism (9) is arranged in a "7" shape, and the left sides of the two cutting blade mechanisms (9) are fitted together. A suction pipe (13) is installed on the support frame (1) on the front side of the feeding roller (4), and a rotating rod (24) is installed through the support frame (1) below the suction pipe (13). A push plate (26) is movably connected to the rear side of the rotating rod (24) through the rotating frame (25). A limit plate (27) is installed on the inner rear side of the support frame (1). The rubber pad above the limit plate (27) is in contact with the lower part of the rotating frame (25) to limit the rotation frame (25). A convex plate (241) is installed on the outer front end of the rotating rod (24). Six sets of convex rods (111) are installed at equal intervals on the outer front end of the guide roller (11) on the rear side. A convex plate (241) is provided below the convex rod (111). The convex plate (241) forms a rotating structure through the convex rod (111). A spiral spring (242) is nested on the outer front end of the rotating rod (24).

2. The MOFs multifunctional membrane defect detection device according to claim 1, characterized in that: A guide roller (11) is provided below the outer side of the upper adjusting roller (10), and a lower support roller (12) is provided directly below the upper adjusting roller (10). Both the left and right ends of the upper adjusting roller (10) are connected through the vertical guide column (22) installed inside the support frame (1). A connecting spring (23) is nested on the outer side of the vertical guide column (22).

3. The MOFs multifunctional membrane defect detection device according to claim 1, characterized in that: The right side of the support frame (8) is slidably connected to the groove inside the right side of the support frame (1), and the upper right side of the support frame (8) is connected to the electric push rod (14) inside the groove inside the right side of the support frame (1).

4. The MOFs multifunctional membrane defect detection device according to claim 1, characterized in that: A bidirectional lead screw (16) is installed inside the left side of the support frame (8), and a cutting blade mechanism (9) is threaded through the outside of the bidirectional lead screw (16), and a laser rangefinder (17) is installed on the front right side of the cutting blade mechanism (9) at the rear.

5. The MOFs multifunctional membrane defect detection device according to claim 1, characterized in that: The front and rear sides of the support frame (8) are slotted and equipped with horizontal guide columns (19) in the shape of "T". A reset spring (20) is nested on the outer side of one end of the horizontal guide column (19). The outer side of the other end of the horizontal guide column (19) is slidably connected through the vertical surface of the adjustment plate (18). The adjustment plate (18) is set in an inverted "V" shape. An upper adjustment roller (10) is set below the inclined surface of the adjustment plate (18). The upper adjustment roller (10) forms a lifting structure through the adjustment plate (18).

6. The MOFs multifunctional membrane defect detection device according to claim 5, characterized in that: The support frame (1) is symmetrically equipped with self-push plates (21) on the inner right side, and the upper part of the self-push plates (21) is set as an inclined surface. The upper part of the self-push plates (21) is set as a vertical surface of the adjustment plate (18), and the adjustment plate (18) forms a horizontal sliding structure through the self-push plates (21).

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