A PVA film manufacturing performance detection device and method

Abstract

The present invention relates to the technical field of film detection, and particularly relates to a PVA film manufacturing performance detection device and method, including an L-shaped frame. A base plate with a circular sunken hole opened at the upper end is installed at the lower end of the vertical section of the L-shaped frame. The device further includes a rotating device connected to the base plate. The rotating device includes a rotating disk rotatably connected to the bottom wall of the circular sunken hole. A plurality of placement mechanisms for clamping the film and evenly distributed circumferentially are connected to the upper end of the rotating disk. An adjusting mechanism is arranged in the middle of the upper end of the rotating disk. The rotating device adopted in the present invention cooperates with the detection device, can realize the function of puncture detection of the film at different angles, effectively improves the diversity of film puncture detection, increases the comprehensiveness of film detection results, and does not require separate adjustment of the puncture detection angle, reduces the operation steps of film puncture detection, and effectively improves the efficiency of multi-angle puncture detection of the film.

Description

Technical Field

[0001] The present invention relates to the technical field of thin film detection, and particularly relates to a PVA thin film manufacturing performance detection device and method. Background Art

[0002] The PVA thin film is a water-soluble polymer with good film-forming property, transparency, flexibility and biodegradability; the PVA thin film is widely used in the fields of packaging, coating, textile, medicine, agriculture, etc., and especially performs excellently in environmentally friendly packaging materials and functional thin films.

[0003] It is of great significance to perform puncture strength detection during the manufacturing process of the PVA thin film. The puncture detection of the PVA thin film can ensure product safety, improve product reliability, enhance the anti-damage ability, and extend the service life of the PVA thin film.

[0004] In the existing technology for puncture detection of the PVA thin film, the cut PVA thin film sample is usually fixed in the fixture of the tester, and then the test parameters such as puncture speed and preloading force are set according to the standard. The tester is started to make the puncture needle penetrate the sample at a constant speed, and the maximum force value and other relevant data are recorded. This method can effectively perform puncture detection on the PVA thin film and can perform puncture detection on PVA thin films with different thicknesses. However, the tester can only perform puncture detection on the PVA thin film from the vertical direction, and the puncture detection method is single. It cannot detect the anti-puncture performance of the PVA thin film under the force in the inclined direction, and the detection result of the PVA thin film is not comprehensive. Summary of the Invention

[0005] Based on this, it is necessary to provide a PVA thin film manufacturing performance detection device and method, aiming to solve the problems generated during the puncture detection of the PVA thin film manufacturing performance in the existing technology.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A PVA thin film manufacturing performance detection device, comprising: an L-shaped frame, and a base plate with a circular counterbore opened at the lower end of the vertical section of the L-shaped frame is installed.

[0007] It further includes a rotating device, the rotating device is connected to the base plate, the rotating device includes a rotating disk rotatably connected to the bottom wall of the circular counterbore, a plurality of placement mechanisms for clamping the thin film are connected to the upper end of the rotating disk and are circumferentially and evenly distributed, and an adjusting mechanism is arranged in the middle of the upper end of the rotating disk.

[0008] The adjusting mechanism includes a multi-frame arranged on the upper part of the rotating disk, a plurality of push-up protrusions are installed on the outer frame wall of the multi-frame, and the structures of the plurality of push-up protrusions are the same and the protrusion sizes increase in sequence.

[0009] It further includes a detection device, which is connected to the L-shaped frame. The detection device includes a rotating frame arranged below the horizontal section of the L-shaped frame. A sliding opening in the shape of a T is formed at the lower end of the rotating frame. A moving mechanism is connected in the sliding opening. A needle-punching mechanism is connected to the rotating frame. Pushing plates are arranged on both the front and rear sides of the needle-punching mechanism. The pushing plates are fixedly connected to the vertical section of the L-shaped frame. Bevels are arranged at the upper ends of the opposite ends of the two pushing plates.

[0010] The needle-punching mechanism includes a rotating shaft that penetrates and is rotatably connected to the rotating frame near the lower end. A transmission gear is sleeved and installed in the middle of the rotating shaft. U-shaped frames with upward openings are jointly installed at both ends of the rotating shaft. A puncture needle is detachably installed at the outer end of the middle section of the U-shaped frame.

[0011] Furthermore, the rotating device further includes a plurality of cylindrical counterbores that are circumferentially and evenly distributed and formed on the annular surface of the rotating disk. A positioning column is slidably connected in the cylindrical counterbore. A connecting spring is installed between the positioning column and the circular hole wall of the cylindrical counterbore. A plurality of semi-circular grooves that are circumferentially and evenly distributed are formed on the inner ring surface of the circular counterbore. The positions of the plurality of semi-circular grooves correspond to the positions of the plurality of cylindrical counterbores one by one. A semi-spherical protrusion is integrally formed at the end of the positioning column away from the rotating disk.

[0012] Furthermore, the placing mechanism includes a cylindrical tube installed at the upper end of the rotating disk. A threaded sleeve is threadedly connected to the upper end of the cylindrical tube. A rotating frame is rotatably connected to the inner ring surface of the threaded sleeve. An annular sleeve is laid in the rotating frame.

[0013] Furthermore, the adjusting mechanism further includes a positioning column installed in the middle of the upper end of the rotating disk. A plurality of connecting plates that are axially and evenly distributed are installed on the annular surface of the positioning column. The plurality of connecting plates are simultaneously fixedly connected to the inner frame wall of the multi-sided frame.

[0014] Furthermore, the moving mechanism includes a U-shaped sliding plate with an upward opening and a horizontal section that is slidably connected to the horizontal section of the sliding opening. A plurality of evenly distributed teeth are installed at the lower end of the horizontal section of the U-shaped sliding plate. The teeth are meshed with the transmission gear. A return spring is installed between the right vertical section of the U-shaped sliding plate and the rotating frame. A guiding protrusion is installed at the left end of the U-shaped sliding plate. A ball is rotatably connected to the left end of the guiding protrusion.

[0015] Furthermore, the needle-punching mechanism further includes two limiting chains that are symmetrically connected to the rotating frame near the lower end. Pressing chains are connected to the two vertical sections of the U-shaped frame near the open end. The two pressing chains are symmetrically distributed.

[0016] Further, the limiting chain includes a first ring disposed on one side of the transmission gear and sleeved on the rotating shaft. An anti-slip pad is installed at one end of the first ring close to the transmission gear, and a plurality of moving rods are installed at the other end of the first ring away from the transmission gear. The moving rods are circumferentially and evenly distributed and slidably penetrate through the rotating frame. A second ring is commonly installed at the ends of the plurality of moving rods away from the first ring.

[0017] Further, the pressing chain includes a third ring sleeved on the outer periphery of the rotating shaft and located between the rotating frame and the vertical side wall of the U-shaped frame. A plurality of sliding rods are installed at the end of the third ring away from the rotating frame. The sliding rods are circumferentially and evenly distributed and slidably penetrate through the vertical side wall of the U-shaped frame. A pushing circular plate is commonly installed at the ends of the plurality of sliding rods away from the third ring. An extrusion protrusion is installed in the middle of the end of the pushing circular plate away from the sliding rods.

[0018] Further, the detection device further includes a feeding module installed at the lower end of the horizontal section of the L-shaped frame. The lower end of the feeding module is fixedly connected to the rotating frame.

[0019] In addition, the present invention also provides a method for detecting the manufacturing performance of PVA films, which specifically includes the following steps: S1: Manually place a plurality of films to be detected in a plurality of placing mechanisms in sequence, and the placing mechanisms clamp and limit the films.

[0020] S2: Rotate the rotating disk, and the rotating disk drives the films to be detected to move directly below the needle punching mechanism through the placing mechanisms.

[0021] S3: While the rotating disk rotates, it drives the adjusting mechanism to rotate through the positioning column and the connecting plate. The adjusting mechanism pushes the moving mechanism, and the moving mechanism adjusts the detection angle of the needle punching mechanism.

[0022] S4: Start the feeding module. The feeding module drives the needle punching mechanism to move downward through the rotating frame. The two pushing plates squeeze the two pressing chains. The two pressing chains limit and press the rotated needle punching mechanism through the two limiting chains. Subsequently, the needle punching mechanism continues to move downward and punctures and detects the film. After that, the feeding module drives the needle punching mechanism to reset upward through the rotating frame.

[0023] S5: Repeat steps S2 - S4 until all the films are completely detected, and the detection ends.

[0024] In summary, the present invention includes the following beneficial effects: 1. The rotation device and the detection device used in the present invention cooperate to achieve the function of puncture detection of the film at different angles, effectively improving the diversity of film puncture detection, increasing the comprehensiveness of film detection results, and eliminating the need for separate adjustment of the puncture detection angle, reducing the operation steps of film puncture detection, and effectively improving the efficiency of multi-angle puncture detection of the film.

[0025] 2. The placement mechanism used in the present invention can flatten the placed film to ensure that the detection position of the film is in a horizontal state, avoiding the phenomenon of central depression of the film before detection, and improving the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The present invention will be further described below in conjunction with the drawings and embodiments.

[0027] Figure 1 Shows a three-dimensional structural schematic diagram of the present invention.

[0028] Figure 2 Shows a front view of the present invention.

[0029] Figure 3 Shows a left view of the present invention.

[0030] Figure 4 Shows Figure 2 A cross-sectional view taken along A-A in

[0031] Figure 5 Shows Figure 4 An enlarged view of area D in

[0032] Figure 6 Shows Figure 3 A cross-sectional view taken along B-B in

[0033] Figure 7 Shows Figure 6 An enlarged view of area N in

[0034] Figure 8 Shows Figure 6 An enlarged view of area X in

[0035] Figure 9 Shows a structural schematic diagram of the rotating frame, moving mechanism and needle-punching mechanism of the present invention.

[0036] Among them, the above-mentioned drawings include the following reference numerals: 1. L-shaped frame; 2. Base plate; 3. Rotating device; 31. Rotating disk; 32. Placing mechanism; 321. Cylindrical tube; 322. Threaded sleeve; 323. Rotating frame; 324. Annular sleeve; 33. Adjusting mechanism; 331. Multi-sided frame; 332. Pushing protrusion; 333. Positioning column; 334. Connecting plate; 34. Cylindrical counterbore; 35. Positioning column; 36. Connecting spring; 37. Semi-circular groove; 4. Detection device; 41. Rotating frame; 42. Sliding opening; 43. Moving mechanism; 431. U-shaped slide plate; 432. Teeth; 433. Return spring; 434. Guiding protrusion; 44. Needling mechanism; 441. Rotating shaft; 442. Transmission gear; 443. U-shaped frame; 444. Puncture needle; 445. Limiting chain; 4451. First ring; 4452. Anti-slip pad; 4453. Moving rod; 4454. Second ring; 446. Pressing chain; 4461. Third ring; 4462. Sliding rod; 4463. Pushing circular plate; 4464. Extrusion protrusion; 45. Pushing plate; 46. Feeding module. Detailed implementation manners

[0037] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0038] Refer to Figures 1 - 3 , a PVA film manufacturing performance detection device, including an L-shaped frame 1, and a base plate 2 with a circular counterbore opened at the upper end is installed at the lower end of the vertical section of the L-shaped frame 1.

[0039] Refer to Figure 1 、 Figure 4 、 Figure 6 and Figure 8 , the PVA film manufacturing performance detection device further includes a rotating device 3, the rotating device 3 is connected to the base plate 2, the rotating device 3 includes a rotating disk 31 rotatably connected to the bottom wall of the circular counterbore, and a plurality of placing mechanisms 32 for clamping the film are connected to the upper end of the rotating disk 31 and are circumferentially and evenly distributed. The placing mechanism 32 includes a cylindrical tube 321 installed at the upper end of the rotating disk 31, a threaded sleeve 322 is threadedly connected to the upper end of the cylindrical tube 321, a rotating frame 323 is rotatably connected to the inner ring surface of the threaded sleeve 322, and an annular sleeve 324 is laid in the rotating frame 323.

[0040] During specific operation, before detection, the base plate 2 is fixed at the working position, and the base plate 2 fixes the rotating disk 31 at the working position. Initially, a plurality of threaded sleeves 322 and a plurality of cylindrical tubes 321 are in a separated state. A plurality of films to be detected are sequentially placed on the plurality of cylindrical tubes 321. Subsequently, the plurality of threaded sleeves 322 are sleeved on the corresponding plurality of cylindrical tubes 321. During the sleeving process of the threaded sleeve 322, the rotating frame 323 drives the annular sleeve 324 to move towards the film. The annular sleeve 324 is made of existing rubber material. After the annular sleeve 324 contacts the film, it presses down the film that extends beyond the end face of the cylindrical tube 321. The film located at the end face of the cylindrical tube 321 is laid flat under the circumferential tension, thereby ensuring that the detection position of the film is in a horizontal state and avoiding the phenomenon of the middle of the film being sunken before detection. Subsequently, the threaded sleeve 322 continues to move downward. The annular sleeve 324 is sleeved on the cylindrical tube 321 and presses the film that extends beyond the end face of the cylindrical tube 321. Then, the threaded sleeve 322 is rotated. The threaded sleeve 322 is threadedly connected to the cylindrical tube 321, and the top wall of the threaded sleeve 322 contacts the film and presses it onto the end face of the cylindrical tube 321. At the same time, the threaded sleeve 322 rotates relative to the rotating frame 323 to avoid the phenomenon of the film being wrinkled.

[0041] Refer to Figure 1 , Figure 6 and Figure 7 , the rotating device 3 further includes a plurality of cylindrical counterbores 34 that are circumferentially and evenly distributed and are opened on the annular surface of the rotating disk 31. A positioning column 35 is slidably connected in the cylindrical counterbore 34. A connecting spring 36 is installed between the positioning column 35 and the circular hole wall of the cylindrical counterbore 34. A plurality of semi-circular grooves 37 that are circumferentially and evenly distributed are opened on the inner ring surface of the circular counterbore. The positions of the plurality of semi-circular grooves 37 correspond to the positions of the plurality of cylindrical counterbores 34 one by one. A semi-spherical protrusion is integrally formed at one end of the positioning column 35 away from the rotating disk 31.

[0042] During specific operation, after a plurality of films are installed, the rotating disk 31 is rotated. The rotating disk 31 moves the film to be detected to the detection position through the placement mechanism 32. At the same time, the semi-spherical protrusions on the plurality of positioning columns 35 are engaged with the corresponding semi-circular grooves 37 to realize the function of limiting the rotating disk 31 and avoid the phenomenon of the film rotating during the detection process.

[0043] Refer to Figure 1 , Figure 5 , Figure 6 and Figure 9, the PVA film manufacturing performance detection device further includes a detection device 4, the detection device 4 is connected to the L-shaped frame 1, the detection device 4 includes a rotating frame 41 arranged below the horizontal section of the L-shaped frame 1, a sliding opening 42 in the shape of a T is opened at the lower end of the rotating frame 41, a moving mechanism 43 is connected in the sliding opening 42, a needle punching mechanism 44 is connected to the rotating frame 41, the detection device 4 further includes a feeding module 46 installed at the lower end of the horizontal section of the L-shaped frame 1, and the lower end of the feeding module 46 is fixedly connected to the rotating frame 41.

[0044] During specific operation, the feeding module 46 is an existing extrusion device, and the extrusion device is equipped with a display device for displaying the value of the applied force. Initially, the feeding module 46 is in the state with the shortest stroke, and the rotating frame 41 is connected and limited.

[0045] Refer to Figure 1 、 Figure 5 、 Figure 6 and Figure 9 , the needle punching mechanism 44 includes a rotating shaft 441 that penetrates and is rotatably connected to the rotating frame 41 near the lower end. A transmission gear 442 is sleeved and installed in the middle of the rotating shaft 441. Both ends of the rotating shaft 441 are jointly installed with a U-shaped frame 443 with an upward opening. A puncture needle 444 is detachably installed at the outer end of the middle section of the U-shaped frame 443.

[0046] Refer to Figure 1 、 Figure 5 、 Figure 6 and Figure 9 , the moving mechanism 43 includes a U-shaped sliding plate 431 with an upward opening and a horizontal section that is slidably connected to the horizontal section of the sliding opening 42. A plurality of uniformly distributed teeth 432 are installed at the lower end of the horizontal section of the U-shaped sliding plate 431. The teeth 432 are meshed with the transmission gear 442. A return spring 433 is installed between the right vertical section of the U-shaped sliding plate 431 and the rotating frame 41. A guiding protrusion 434 is installed at the left end of the U-shaped sliding plate 431. A ball is rotatably connected to the left end of the guiding protrusion 434.

[0047] During specific operation, initially, the return spring 433 is in a normal state, the left end of the U-shaped sliding plate 431 is far from the rotating frame 41, the U-shaped sliding plate 431 limits the transmission gear 442 through the teeth 432, and at this time, the U-shaped frame 443 drives the puncture needle 444 to be in an inclined state.

[0048] Refer to Figure 1 and Figure 6, a regulating mechanism 33 is provided in the middle of the upper end of the rotating disk 31. The regulating mechanism 33 includes a multi-frame 331 disposed on the upper part of the rotating disk 31. A plurality of pushing protrusions 332 evenly distributed in the circumferential direction are installed on the outer frame wall of the multi-frame 331. The structures of the plurality of pushing protrusions 332 are the same and the protrusion sizes increase in sequence.

[0049] Refer to Figure 1 and Figure 6 , the regulating mechanism 33 further includes a positioning column 333 installed in the middle of the upper end of the rotating disk 31. A plurality of connecting plates 334 evenly distributed in the axial direction are installed on the circumferential surface of the positioning column 333. The plurality of connecting plates 334 are fixedly connected to the inner frame wall of the multi-frame 331 at the same time.

[0050] During specific operation, while the rotating disk 31 drives the film to move to the detection position through the placing mechanism 32, the rotating disk 31 drives the multi-frame 331 to rotate through the positioning column 333 and the plurality of connecting plates 334. The multi-frame 331 drives the pushing protrusion 332 corresponding to the placing mechanism 32 that is about to move to the detection position to rotate. While this pushing protrusion 332 rotates, it pushes the guiding protrusion 434. The guiding protrusion 434 drives the U-shaped slide plate 431 to move under force. The U-shaped slide plate 431 drives the transmission gear 442 to rotate through a plurality of gear teeth 432. The transmission gear 442 drives the U-shaped frame 443 to rotate through the rotating shaft 441. The U-shaped frame 443 drives the puncture needle 444 to rotate to the required detection angle. At the same time, the U-shaped slide plate 431 stretches the return spring 433.

[0051] Refer to Figure 1 and Figure 6 , pushing plates 45 are provided on both the front and rear sides of the acupuncture mechanism 44. The pushing plates 45 are fixedly connected to the vertical section of the L-shaped frame 1. Oblique surfaces are provided at the upper ends of the opposite ends of the two pushing plates 45.

[0052] Refer to Figure 1 , Figure 5 , Figure 6 and Figure 9 , the acupuncture mechanism 44 further includes two limiting chain links 445 symmetrically connected to the lower part of the rotating frame 41. Compressing chain links 446 are connected to the two vertical sections of the U-shaped frame 443 near the open end. The two compressing chain links 446 are symmetrically distributed.

[0053] Refer to Figure 1 , Figure 5 , Figure 6 and Figure 9, the pressing chain 446 includes a third ring 4461 sleeved on the outer periphery of the rotating shaft 441 and located between the rotating frame 41 and the vertical side wall of the U-shaped frame 443. One end of the third ring 4461 away from the rotating frame 41 is provided with a plurality of sliding rods 4462 that are circumferentially and evenly distributed and slide through the vertical side wall of the U-shaped frame 443. One end of the plurality of sliding rods 4462 away from the third ring 4461 is commonly provided with a pushing circular plate 4463. The middle of one end of the pushing circular plate 4463 away from the sliding rod 4462 is provided with a pressing protrusion 4464.

[0054] During specific operation, after the angle adjustment of the puncture needle 444 is completed, the feeding module 46 is started. The feeding module 46 drives the rotating shaft 441 to move downward through the rotating frame 41. The rotating shaft 441 drives the puncture needle 444 to move towards the film through the U-shaped frame 443. At the same time, the U-shaped frame 443 drives the third rings 4461 on both sides and the pushing circular plates 4463 on both sides to move downward through the plurality of sliding rods 4462 on both sides. The two pushing circular plates 4463 drive the two pressing protrusions 4464 to move downward. The pressing protrusions 4464 are hemispherical. The two pressing protrusions 4464 are respectively in contact with the inclined surfaces on the two pushing plates 45. The two pressing protrusions 4464 drive the two pushing circular plates 4463 to move towards the two limiting chains 445 respectively under force. The two pushing circular plates 4463 drive the two third rings 4461 to move towards the corresponding two limiting chains 445 through the plurality of sliding rods 4462.

[0055] Refer to Figure 1 , Figure 5 , Figure 6 and Figure 9 , the limiting chain 445 includes a first ring 4451 arranged on one side of the transmission gear 442 and sleeved on the rotating shaft 441. One end of the first ring 4451 close to the transmission gear 442 is provided with an anti-slip pad 4452. One end of the first ring 4451 away from the transmission gear 442 is provided with a plurality of moving rods 4453 that are circumferentially and evenly distributed and slide through the rotating frame 41. One end of the plurality of moving rods 4453 away from the first ring 4451 is commonly provided with a second ring 4454.

[0056] During specific operation, two moving third rings 4461 respectively push two second rings 4454. The two second rings 4454 are stressed and drive two first rings 4451 to move towards the transmission gear 442 simultaneously through a plurality of moving rods 4453 on both sides. The two first rings 4451 respectively drive two anti-slip pads 4452 to move to both side walls of the transmission gear 442 and closely adhere to the transmission gear 442, thereby limiting the circumferential rotation of the transmission gear 442, and further realizing the limitation of the puncture needle 444 after rotation, avoiding the rotation of the puncture needle 444 during the detection process, and improving the stability and accuracy of the detection.

[0057] The feeding module 46 continues to drive the puncture needle 444 to move towards the film through the rotating shaft 441 and the U-shaped frame 443 and puncture the film for detection, and then records the force applied by the feeding module 46. Subsequently, the feeding module 46 drives the puncture needle 444 to rise and reset through the rotating shaft 441 and the U-shaped frame 443. Then, the turntable 31 is rotated. The turntable 31 moves the next film to the detection position, and at the same time moves the corresponding pushing protrusions 332 to the guiding protrusions 434. The sizes of the plurality of pushing protrusions 332 are different, and in cooperation with the guiding protrusions 434, the puncture needle 444 can be adjusted at different angles, effectively improving the diversity of film puncture detection. The movement of the film to the detection position and the angle adjustment of the puncture needle 444 are carried out simultaneously, without separately adjusting the detection angle of the puncture needle 444, improving the detection efficiency. After the detection angle adjustment of the puncture needle 444 is completed, the previous detection steps are repeated to perform puncture detection on the film at different angles until all the plurality of films are subjected to puncture detection at different angles, and the detection is completed.

[0058] In addition, the present invention also provides a method for detecting the manufacturing performance of PVA films, specifically including the following steps: S1: Manually place a plurality of films to be detected in a plurality of placement mechanisms 32 in sequence, and the placement mechanisms 32 clamp and limit the films.

[0059] S2: Rotate the turntable 31, and the turntable 31 drives the film to be detected to move directly below the needle-punching mechanism 44 through the placement mechanism 32.

[0060] S3: While the turntable 31 rotates, it drives the adjustment mechanism 33 to rotate through the positioning column 333 and the connecting plate 334. The adjustment mechanism 33 pushes the moving mechanism 43, and the moving mechanism 43 adjusts the detection angle of the needle-punching mechanism 44.

[0061] S4: Activate the feeding module 46. The feeding module 46 drives the needling mechanism 44 to move downward through the rotating frame 41. The two pushing plates 45 squeeze the two pressing chains 446. The two pressing chains 446 press and limit the rotated needling mechanism 44 through the two limiting chains 445. Subsequently, the needling mechanism 44 continues to move downward and punctures and detects the film. After that, the feeding module 46 drives the needling mechanism 44 to reset upward through the rotating frame 41.

[0062] S5: Repeat steps S2 - S4 until all multiple films are completely detected, and the detection ends.

[0063] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the embodiments of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

[0064] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A PVA film manufacturing performance testing device, comprising an L-shaped frame, characterized in that: A base plate with a circular countersunk hole at the upper end is installed at the lower end of the vertical section of the L-shaped frame; A rotating device connected to the base plate, the rotating device comprising a rotating disk rotatably connected to the bottom wall of the circular countersunk hole, a plurality of placement mechanisms evenly distributed in the circumference and used for clamping the film are connected to the upper end of the rotating disk, and an adjustment mechanism is arranged in the middle of the upper end of the rotating disk; The adjustment mechanism comprises a multi-frame arranged on the rotating disk, and a plurality of circumferentially evenly distributed pushing protrusions are installed on the outer frame wall of the multi-frame, and the plurality of pushing protrusions have the same structure and the sizes of the protrusions increase sequentially; A detection device is connected to the L-shaped frame, the detection device comprises a rotating frame arranged below the horizontal section of the L-shaped frame, a T-shaped sliding opening is opened at the lower end of the rotating frame, a moving mechanism is connected in the sliding opening, an acupuncture mechanism is connected to the rotating frame, and a pushing plate is arranged on both the front and rear sides of the acupuncture mechanism, and the pushing plate is fixedly connected to the vertical section of the L-shaped frame; The acupuncture mechanism comprises a rotating shaft penetrating and rotatably connected to the rotating frame near the lower end, a transmission gear is sleeved and installed in the middle of the rotating shaft, and a U-shaped frame with an upward opening is installed at both ends of the rotating shaft, and a puncture needle is detachably installed at the outer end of the middle section of the U-shaped frame; The moving mechanism includes a U-shaped slide plate with an upward opening and a horizontal section slidably connected to the horizontal section of the sliding opening, a plurality of evenly distributed gear teeth are installed at the lower end of the horizontal section of the U-shaped slide plate, the gear teeth are meshed with a transmission gear, a return spring is installed between the vertical section on the right side of the U-shaped slide plate and the rotating frame, a guide protrusion is installed at the left end of the U-shaped slide plate, and a ball is rotatably connected to the left end of the guide protrusion.

2. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The rotating device also includes a plurality of cylindrical countersunk holes evenly distributed in the circumference and opened on the annular surface of the rotating disk, a locking column is slidably connected in the cylindrical countersunk hole, a connecting spring is installed between the locking column and the circular hole wall of the cylindrical countersunk hole, a plurality of semicircular grooves evenly distributed in the circumference are opened on the inner annular surface of the circular countersunk hole on the base plate, the positions of the plurality of semicircular grooves correspond one by one to the positions of the plurality of cylindrical countersunk holes, and a semi-spherical protrusion is integrally formed on the end of the locking column away from the rotating disk.

3. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The placement mechanism comprises a cylindrical tube installed at the upper end of the rotating disk, the upper end of the cylindrical tube is threadedly connected with a threaded sleeve, the inner annular surface of the threaded sleeve is rotatably connected with a rotating frame, and an annular sleeve is laid in the rotating frame.

4. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The adjustment mechanism also includes a positioning column installed in the middle of the upper end of the rotating disk, and a plurality of axially evenly distributed connecting plates are installed on the annular surface of the positioning column. The plurality of connecting plates are fixedly connected to the inner frame wall of the multi-frame at the same time.

5. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The acupuncture mechanism also includes two limit branches symmetrically connected to the rotating frame near the lower end, and the two vertical sections of the U-shaped frame are connected to clamping branches near the open end, and the two clamping branches are symmetrically distributed.

6. A PVA film manufacturing performance testing device according to claim 5, characterized in that: The limiting branch chain includes a first ring arranged on one side of the transmission gear and sleeved on the rotating shaft, an anti-slip pad is installed at one end of the first ring close to the transmission gear, a plurality of moving rods that are evenly distributed circumferentially and slide through the rotating frame are installed at one end of the first ring away from the transmission gear, and a second ring is commonly installed at one end of the plurality of moving rods away from the first ring.

7. A PVA film manufacturing performance testing device according to claim 5, characterized in that: The compression branch chain includes a third ring which is sleeved on the outer circumference of the rotating shaft and located between the rotating frame and the vertical side wall of the U-shaped frame. A plurality of sliding rods which are evenly distributed circumferentially and slide through the vertical side wall of the U-shaped frame are installed at one end of the third ring away from the rotating frame. A pushing circular plate is commonly installed at one end of the plurality of sliding rods away from the third ring. An extrusion protrusion is installed at the middle of one end of the pushing circular plate away from the sliding rod.

8. The PVA film manufacturing performance testing equipment according to claim 1, characterized in that: The detection device also includes a feeding module installed at the lower end of the horizontal section of the L-shaped frame, and the lower end of the feeding module is fixedly connected to the rotating frame.

9. A method for testing the manufacturing performance of a PVA film, characterized in that: The method is completed by using the PVA film manufacturing performance testing equipment as claimed in claim 8, including the following steps: S1: Manually place multiple films to be tested in multiple placement mechanisms in sequence, and the placement mechanisms clamp and limit the films; S2: Rotate the rotating disk, and the rotating disk drives the film to be tested to move to the bottom of the acupuncture mechanism through the placement mechanism; S3: The rotating disk rotates while driving the adjusting mechanism to rotate, the adjusting mechanism pushes the moving mechanism, and the moving mechanism adjusts the detection angle of the acupuncture mechanism; S4: starting the feeding module, the feeding module drives the puncture mechanism to move downward through the rotating frame, the puncture mechanism moves downward and performs puncture detection on the film, and then the feeding module drives the puncture mechanism to reset upward through the rotating frame; S5: Repeat steps S2-S4 until all the films are tested and the test is finished.

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