Equipment and method for detecting manufacturing performance of PVA (Polyvinyl Alcohol) film

Abstract

The invention relates to the technical field of film detection, in particular to PVA film manufacturing performance detection equipment and method.The PVA film manufacturing performance detection equipment comprises an L-shaped frame, the lower end of the vertical section of the L-shaped frame is provided with a base plate, and a circular counter bore is formed in the upper end of the base plate; the device further comprises a rotating device, the rotating device is connected to the base plate, the rotating device comprises a rotating disc rotationally connected to the bottom wall of the circular counter bore, the upper end of the rotating disc is connected with a plurality of containing mechanisms which are evenly distributed in the circumferential direction and used for clamping a film, and an adjusting mechanism is arranged in the middle of the upper end of the rotating disc. The rotating device is matched with the detection device, so that the function of performing puncture detection on a film at different angles can be realized, the diversity of film puncture detection is effectively improved, the comprehensiveness of a film detection result is improved, the puncture detection angle does not need to be independently adjusted, the operation steps of film puncture detection are reduced, and the detection efficiency is improved. And the efficiency of multi-angle puncture detection of the film is effectively improved.

Description

Technical Field

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

[0002] PVA film is a water-soluble polymer with good film-forming properties, transparency, flexibility and biodegradability. PVA film is widely used in packaging, coating, textile, medicine, agriculture and other fields, especially in environmentally friendly packaging materials and functional films.

[0003] It is of great significance to carry out puncture strength testing of PVA film during the manufacturing process. PVA film puncture testing can ensure product safety, improve product reliability, enhance damage resistance, and extend the service life of PVA film.

[0004] In the existing technology, when performing puncture detection on PVA film, the cut PVA film sample is usually fixed in the fixture of the tester, and then the test parameters such as puncture speed and preload are set according to the standard, the tester is started, and the puncture needle is allowed to 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 PVA film, and can perform puncture detection on PVA films of different thicknesses. However, the tester can only perform puncture detection on PVA film from the vertical direction. The puncture detection method is single, and it cannot detect the puncture resistance of PVA film under inclined direction force. The detection results of PVA film are not comprehensive. Summary of the invention

[0005] Based on this, it is necessary to provide a PVA film manufacturing performance testing device and method, aiming to solve the problems caused by the existing technology when performing puncture testing on the manufacturing performance of PVA film.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme to achieve: a PVA film manufacturing performance testing device, comprising: an L-shaped frame, a base plate with a circular countersunk hole on the upper end is installed at the lower end of the vertical section of the L-shaped frame.

[0007] It also includes a rotating device, which is connected to the base plate. The rotating device includes a rotating disk rotatably connected to the bottom wall of the circular countersunk hole. The upper end of the rotating disk is connected to a plurality of placement mechanisms that are evenly distributed circumferentially and used to clamp the film. An adjustment mechanism is provided in the middle of the upper end of the rotating disk.

[0008] 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. The plurality of pushing protrusions have the same structure and the sizes of the protrusions increase sequentially.

[0009] It also 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 T-shaped sliding opening is opened at the lower end of the rotating frame, a moving mechanism is connected in the sliding opening, and a needling mechanism is connected to the rotating frame. Pushing plates are arranged on the front and rear sides of the needling mechanism, and the pushing plates are fixedly connected to the vertical section of the L-shaped frame. Inclined surfaces are arranged at the upper ends of the opposite ends of the two pushing plates.

[0010] The acupuncture mechanism includes a rotating shaft that passes through and is rotatably connected to the rotating frame near the lower end. A transmission gear is sleeved on the middle of the rotating shaft. Both ends of the rotating shaft are jointly installed with a U-shaped frame with an upward opening. The outer end of the middle section of the U-shaped frame is detachably installed with a puncture needle.

[0011] Furthermore, the rotating device also includes a plurality of cylindrical countersunk holes which are 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 which are evenly distributed in the circumference are opened on the inner annular surface of the circular countersunk hole, the positions of the plurality of semicircular grooves correspond one by one to the positions of the plurality of cylindrical countersunk holes, and a semispherical protrusion is integrally formed on the end of the locking column away from the rotating disk.

[0012] Furthermore, the placement mechanism includes a cylindrical tube installed on the upper end of the rotating disk, the upper end of the cylindrical tube is threadedly connected to a threaded sleeve, the inner annular surface of the threaded sleeve is rotatably connected to a rotating frame, and an annular sleeve is laid in the rotating frame.

[0013] Furthermore, 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, and the plurality of connecting plates are fixedly connected to the inner frame wall of the multi-frame at the same time.

[0014] Furthermore, the moving mechanism includes a U-shaped skateboard 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 gear teeth are installed at the lower end of the horizontal section of the U-shaped skateboard, the gear teeth are meshed with the transmission gear, a return spring is installed between the vertical section on the right side of the U-shaped skateboard and the rotating frame, a guide protrusion is installed at the left end of the U-shaped skateboard, and a ball is rotatably connected to the left end of the guide protrusion.

[0015] Furthermore, 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.

[0016] Furthermore, 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 on the end of the first ring close to the transmission gear, a plurality of movable rods that are evenly distributed circumferentially and slide through the rotating frame are installed on the end of the first ring away from the transmission gear, and a second ring is commonly installed on the end of the plurality of movable rods away from the first ring.

[0017] Furthermore, 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, and 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, and a pushing circular plate is commonly installed at one end of the plurality of sliding rods away from the third ring, and an extrusion protrusion is installed in the middle of one end of the pushing circular plate away from the sliding rod.

[0018] Furthermore, 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.

[0019] In addition, the present invention also provides a method for testing the manufacturing performance of a PVA film, which specifically includes the following steps: S1: manually placing multiple films to be tested in multiple placement mechanisms in sequence, and the placement mechanisms clamp and limit the films.

[0020] 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.

[0021] S3: When the rotating disk rotates, the adjusting mechanism is driven 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 acupuncture mechanism.

[0022] S4: Start the feeding module. The feeding module drives the needling mechanism to move downward through the rotating frame. The two pushing plates squeeze the two pressing branches. The two pressing branches press and limit the rotated needling mechanism through the two limiting branches. Then the needling mechanism continues to move downward and performs puncture detection on the film. After that, the feeding module drives the needling mechanism to reset upward through the rotating frame.

[0023] S5: Repeat steps S2-S4 until all the films are tested and the test is finished.

[0024] In summary, the present invention includes the following beneficial effects: 1. The rotating device used in the present invention cooperates with the detection device to realize the function of performing puncture detection on the film at different angles, effectively improving the diversity of film puncture detection, increasing the comprehensiveness of film detection results, and eliminating the need to separately adjust the puncture detection angle, reducing the operating 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, avoid the phenomenon of the middle of the film being sunken before detection, and improve the accuracy of the detection result. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 1 A three-dimensional structural schematic diagram of the present invention is shown.

[0028] Figure 2 A front view of the present invention is shown.

[0029] Figure 3 A left side view of the present invention is shown.

[0030] Figure 4 Shows Figure 2 Sectional view of AA.

[0031] Figure 5 Shows Figure 4 Magnified view of area D in the middle.

[0032] Figure 6 Shows Figure 3 Cross-sectional view of BB.

[0033] Figure 7 Shows Figure 6 Magnified view of the middle N region.

[0034] Figure 8 Shows Figure 6 Magnified view of the X area in the middle.

[0035] Fig. 9 The schematic diagram of the structure of the rotating frame, the moving mechanism and the acupuncture mechanism of the present invention is shown.

[0036] The above 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-frame; 332, pushing protrusion; 333, positioning column; 334, connecting plate; 34, cylindrical countersunk hole; 35, locking column; 36, connecting spring; 37, semicircular groove; 4, detection device; 41, rotating frame; 42, sliding opening; 43, moving mechanism; 4 31. U-shaped slide plate; 432. gear teeth; 433. return spring; 434. guide protrusion; 44. acupuncture mechanism; 441. rotating shaft; 442. transmission gear; 443. U-shaped frame; 444. puncture needle; 445. limit branch chain; 4451. first circular ring; 4452. anti-skid pad; 4453. moving rod; 4454. second circular ring; 446. clamping branch chain; 4461. third circular ring; 4462. sliding rod; 4463. pushing circular plate; 4464. squeezing protrusion; 45. pushing plate; 46. feeding module. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of 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 violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0038] See also Figure 1-Figure 3 A PVA film manufacturing performance testing device comprises an L-shaped frame 1, wherein a base plate 2 with a circular countersunk hole on the upper end is installed at the lower end of the vertical section of the L-shaped frame 1.

[0039] See also Figure 1 , Figure 4 , Figure 6 and Figure 8 The PVA film manufacturing performance testing equipment also includes a rotating device 3, which 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 countersunk hole. The upper end of the rotating disk 31 is connected to a plurality of circumferentially evenly distributed placement mechanisms 32 for clamping the film. The placement mechanism 32 includes a cylindrical tube 321 installed on the upper end of the rotating disk 31. The upper end of the cylindrical tube 321 is threadedly connected to a threaded sleeve 322. The inner annular surface of the threaded sleeve 322 is rotatably connected to a rotating frame 323, and an annular sleeve 324 is laid in the rotating frame 323.

[0040] During specific work, the base plate 2 is fixed in the working position before detection, and the base plate 2 fixes the rotating disk 31 in the working position. Initially, the multiple threaded sleeves 322 and the multiple cylindrical tubes 321 are in a separated state, and the multiple films to be detected are placed on the multiple cylindrical tubes 321 in sequence, and then the multiple threaded sleeves 322 are sleeved on the corresponding multiple cylindrical tubes 321. During the sleeve installation of the threaded sleeves 322, the annular sleeve 324 is driven by the rotating frame 323 to move toward 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 exceeds the end surface of the cylindrical tube 321. The film located on the end face of the cylindrical tube 321 is flattened by 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. Then the threaded sleeve 322 continues to move downward, and the annular sleeve 324 is sleeved on the cylindrical tube 321 and presses the film that exceeds the end face of the cylindrical tube 321. The threaded sleeve 322 is then 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. The threaded sleeve 322 rotates relative to the rotating frame 323 at the same time to avoid wrinkles in the film.

[0041] See also Figure 1 , Figure 6 and Figure 7 The rotating device 3 also includes a plurality of cylindrical countersunk holes 34 evenly distributed in the circumference and opened on the annular surface of the rotating disk 31, a locking column 35 is slidably connected in the cylindrical countersunk hole 34, a connecting spring 36 is installed between the locking column 35 and the circular hole wall of the cylindrical countersunk hole 34, a plurality of semicircular grooves 37 evenly distributed in the circumference are opened on the inner annular surface of the circular countersunk hole, the positions of the plurality of semicircular grooves 37 correspond one by one to the positions of the plurality of cylindrical countersunk holes 34, and a semispherical protrusion is integrally formed on the end of the locking column 35 away from the rotating disk 31.

[0042] During specific operation, after multiple films are installed, the rotating disk 31 is rotated, and the rotating disk 31 moves the film to be tested to the testing position through the placement mechanism 32. At the same time, the semi-spherical protrusions on the multiple locking columns 35 are engaged with the corresponding semi-circular grooves 37 to achieve the function of limiting the rotating disk 31 and prevent the film from rotating during the detection process.

[0043] See also Figure 1 , Figure 5 , Figure 6 and Fig. 9The PVA film manufacturing performance detection equipment also includes a detection device 4, which 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, and a T-shaped sliding opening 42 is opened at the lower end of the rotating frame 41. A moving mechanism 43 is connected in the sliding opening 42, and a needle mechanism 44 is connected to the rotating frame 41. The detection device 4 also 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, which has a display device for displaying the applied force value. Initially, the feeding module 46 is in the shortest stroke state, and the rotating frame 41 is connected and limited.

[0045] See also Figure 1 , Figure 5 , Figure 6 and Fig. 9 The acupuncture mechanism 44 includes a rotating shaft 441 that passes through 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 opening facing upward. The outer end of the middle section of the U-shaped frame 443 is detachably installed with a puncture needle 444.

[0046] See also Figure 1 , Figure 5 , Figure 6 and Fig. 9 The moving mechanism 43 includes a U-shaped slide 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 evenly distributed gear teeth 432 are installed at the lower end of the horizontal section of the U-shaped slide 431. The gear teeth 432 are meshed with a transmission gear 442. A return spring 433 is installed between the right vertical section of the U-shaped slide 431 and the rotating frame 41. A guide protrusion 434 is installed at the left end of the U-shaped slide 431, and a ball is rotatably connected to the left end of the guide protrusion 434.

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

[0048] See also Figure 1 and Figure 6An adjustment mechanism 33 is provided at the middle of the upper end of the rotating disk 31. The adjustment mechanism 33 includes a multi-frame 331 arranged on the rotating disk 31. A plurality of circumferentially evenly distributed pushing protrusions 332 are installed on the outer frame wall of the multi-frame 331. The plurality of pushing protrusions 332 have the same structure and the protrusion sizes increase sequentially.

[0049] See also Figure 1 and Figure 6 The adjustment mechanism 33 also includes a positioning column 333 installed in the middle of the upper end of the rotating disk 31, and a plurality of axially evenly distributed connecting plates 334 are installed on the annular surface of the positioning column 333, and 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 placement mechanism 32, the rotating disk 31 drives the multi-frame 331 to rotate through the positioning column 333 and multiple connecting plates 334, and the multi-frame 331 drives the pushing protrusion 332 corresponding to the placement mechanism 32 to be moved to the detection position to rotate. While the pushing protrusion 332 rotates, it pushes the guide protrusion 434, and the guide protrusion 434 is driven by the force to drive the U-shaped slide 431 to move, and the U-shaped slide 431 drives the transmission gear 442 to rotate through multiple gear teeth 432, and the transmission gear 442 drives the U-shaped frame 443 to rotate through the rotating shaft 441, and the U-shaped frame 443 drives the puncture needle 444 to rotate to the required detection angle, and at the same time, the U-shaped slide 431 stretches the reset spring 433.

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

[0052] See also Figure 1 , Figure 5 , Figure 6 and Fig. 9 The acupuncture mechanism 44 also includes two limit branches 445 symmetrically connected to the rotating frame 41 near the lower end, and the two vertical sections of the U-shaped frame 443 are connected to a clamping branch 446 near the open end, and the two clamping branches 446 are symmetrically distributed.

[0053] See also Figure 1 , Figure 5 , Figure 6 and Fig. 9The clamping branch chain 446 includes a third ring 4461 which is 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. A plurality of sliding rods 4462 which are evenly distributed circumferentially and slide through the vertical side wall of the U-shaped frame 443 are installed at one end of the third ring 4461 away from the rotating frame 41. A pushing circular plate 4463 is commonly installed at one end of the plurality of sliding rods 4462 away from the third ring 4461. A squeezing protrusion 4464 is installed at the middle part of one end of the pushing circular plate 4463 away from the sliding rod 4462.

[0054] During specific operation, after the angle adjustment of the puncture needle 444 is completed, the feeding module 46 is started, and the feeding module 46 drives the rotating shaft 441 to move downward through the rotating frame 41, and the rotating shaft 441 drives the puncture needle 444 to move toward the film direction 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 multiple sliding rods 4462 on both sides, and the two pushing circular plates 4463 drive the two extrusion protrusions 4464 to move downward. The extrusion protrusions 4464 are hemispherical, and the two extrusion protrusions 4464 are in contact with the inclined surfaces on the two pushing plates 45 respectively. The two extrusion protrusions 4464 are subjected to force to drive the two pushing circular plates 4463 to move toward the directions of the two limit branch chains 445 respectively, and the two pushing circular plates 4463 drive the two third rings 4461 to move toward the corresponding two limit branch chains 445 through multiple sliding rods 4462.

[0055] See also Figure 1 , Figure 5 , Figure 6 and Fig. 9 The limiting branch chain 445 includes a first ring 4451 arranged on one side of the transmission gear 442 and sleeved on the rotating shaft 441, an anti-slip pad 4452 is installed at one end of the first ring 4451 close to the transmission gear 442, a plurality of moving rods 4453 that are evenly distributed in the circumference and slide through the rotating frame 41 are installed at one end of the first ring 4451 away from the transmission gear 442, and a second ring 4454 is installed together at one end of the plurality of moving rods 4453 away from the first ring 4451.

[0056] During specific operation, the two moving third rings 4461 push the two second rings 4454 respectively, and the two second rings 4454 are subjected to force and drive the two first rings 4451 to move toward the transmission gear 442 at the same time through the multiple moving rods 4453 on both sides. The two first rings 4451 respectively drive the two anti-slip pads 4452 to move to the two side walls of the transmission gear 442 and fit tightly against the transmission gear 442, thereby limiting the circumferential rotation of the transmission gear 442, and then limiting the rotated puncture needle 444, avoiding the puncture needle 444 from rotating 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 toward the film through the rotating shaft 441 and the U-shaped frame 443 and perform puncture detection on the film, 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, and then rotates the rotating disk 31. The rotating disk 31 moves the next film to the detection position and moves the corresponding pushing protrusion 332 to the guide protrusion 434. The multiple pushing protrusions 332 have different sizes and cooperate with the guide protrusion 434 to adjust the puncture needle 444 at different angles, which effectively improves the diversity of film puncture detection. The film moves to the detection position and the angle of the puncture needle 444 is adjusted at the same time. There is no need to adjust the detection angle of the puncture needle 444 separately, which improves the detection efficiency. After the detection angle of the puncture needle 444 is adjusted, the previous detection steps are repeated to perform puncture detection on the film at different angles until all the films are punctured at different angles and the detection is completed.

[0058] In addition, the present invention also provides a method for testing the manufacturing performance of a PVA film, which specifically includes the following steps: S1: manually placing multiple films to be tested in multiple placement mechanisms 32 in sequence, and the placement mechanisms 32 clamp and limit the films.

[0059] S2: Rotate the rotating disk 31 , and the rotating disk 31 drives the film to be tested to move to the bottom of the puncture mechanism 44 through the placement mechanism 32 .

[0060] S3: When the rotating disk 31 rotates, the adjusting mechanism 33 is driven to rotate through the positioning column 333 and the connecting plate 334 . The adjusting mechanism 33 pushes the moving mechanism 43 , and the moving mechanism 43 adjusts the detection angle of the acupuncture mechanism 44 .

[0061] S4: Start the feeding module 46. The feeding module 46 drives the puncture mechanism 44 to move downward through the rotating frame 41. The two pushing plates 45 squeeze the two pressing branches 446. The two pressing branches 446 press and limit the rotated puncture mechanism 44 through the two limiting branches 445. Then the puncture mechanism 44 continues to move downward and performs puncture detection on the film. After that, the feeding module 46 drives the puncture mechanism 44 to reset upward through the rotating frame 41.

[0062] S5: Repeat steps S2-S4 until all the films are tested and the test is finished.

[0063] In the description of the embodiments of the present invention, it should be noted that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "top", "bottom", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are 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, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0064] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "setting", "installation" and "connection" 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 a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0065] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A PVA film manufacturing performance testing device, comprising an L-shaped frame (1), characterized in that: A base plate (2) with a circular countersunk hole at the upper end is installed at the lower end of the vertical section of the L-shaped frame (1); A rotating device (3) connected to the base plate (2), the rotating device (3) comprising a rotating disk (31) rotatably connected to the bottom wall of the circular countersunk hole, a plurality of placement mechanisms (32) evenly distributed in the circumferential direction and used for clamping the film are connected to the upper end of the rotating disk (31), and an adjustment mechanism (33) is provided in the middle of the upper end of the rotating disk (31); The adjusting mechanism (33) comprises a multi-frame (331) arranged on the rotating disk (31), and a plurality of circumferentially evenly distributed pushing protrusions (332) are installed on the outer frame wall of the multi-frame (331), and the plurality of pushing protrusions (332) have the same structure and the protrusion sizes increase sequentially; A detection device (4) is connected to the L-shaped frame (1), the detection device (4) comprises a rotating frame (41) arranged below the horizontal section of the L-shaped frame (1), a T-shaped sliding opening (42) is provided at the lower end of the rotating frame (41), a moving mechanism (43) is connected inside the sliding opening (42), a puncture mechanism (44) is connected to the rotating frame (41), a pushing plate (45) is provided on both the front and rear sides of the puncture mechanism (44), and the pushing plate (45) is fixedly connected to the vertical section of the L-shaped frame (1); The acupuncture mechanism (44) comprises a rotating shaft (441) penetrating through and rotatably connected to the rotating frame (41) near the lower end, a transmission gear (442) being sleeved and installed in the middle of the rotating shaft (441), and a U-shaped frame (443) with an upward opening being installed at both ends of the rotating shaft (441), and a puncture needle (444) being detachably installed at the outer end of the middle section of the U-shaped frame (443).

2. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The rotating device (3) further comprises a plurality of cylindrical countersunk holes (34) evenly distributed in the circumference and provided on the annular surface of the rotating disk (31); a locking column (35) is slidably connected in the cylindrical countersunk hole (34); a connecting spring (36) is installed between the locking column (35) and the circular hole wall of the cylindrical countersunk hole (34); a plurality of semicircular grooves (37) evenly distributed in the circumference are provided on the inner annular surface of the circular countersunk hole on the base plate (2); the positions of the plurality of semicircular grooves (37) correspond to the positions of the plurality of cylindrical countersunk holes (34) one by one; and a semispherical protrusion is integrally formed on one end of the locking column (35) away from the rotating disk (31).

3. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The placement mechanism (32) comprises a cylindrical tube (321) mounted on 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 inside the rotating frame (323).

4. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The adjustment mechanism (33) further comprises a positioning column (333) mounted at the middle of the upper end of the rotating disk (31); a plurality of axially evenly distributed connecting plates (334) are mounted on the annular surface of the positioning column (333); and the plurality of connecting plates (334) are simultaneously fixedly connected to the inner frame wall of the multi-frame (331).

5. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The moving mechanism (43) comprises a U-shaped slide plate (431) with an opening facing upward and a horizontal section slidably connected to the horizontal section of the sliding opening (42); a plurality of evenly distributed gear teeth (432) are installed at the lower end of the horizontal section of the U-shaped slide plate (431); the gear teeth (432) are meshed with a transmission gear (442); a return spring (433) is installed between the right vertical section of the U-shaped slide plate (431) and the rotating frame (41); a guide protrusion (434) is installed at the left end of the U-shaped slide plate (431); and a ball bearing is rotatably connected to the left end of the guide protrusion (434).

6. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The acupuncture mechanism (44) further comprises two limit branch chains (445) symmetrically connected to the rotating frame (41) near the lower end, and the two vertical sections of the U-shaped frame (443) are both connected to a clamping branch chain (446) near the open end, and the two clamping branch chains (446) are symmetrically distributed.

7. A PVA film manufacturing performance testing device according to claim 6, characterized in that: The position-limiting branch chain (445) comprises a first circular ring (4451) arranged on one side of the transmission gear (442) and sleeved on the rotating shaft (441); an anti-slip pad (4452) is installed on one end of the first circular ring (4451) close to the transmission gear (442); a plurality of moving rods (4453) evenly distributed in the circumference and slidingly passing through the rotating frame (41) are installed on one end of the first circular ring (4451) away from the transmission gear (442); and a second circular ring (4454) is installed on one end of the plurality of moving rods (4453) away from the first circular ring (4451).

8. The PVA film manufacturing performance testing equipment according to claim 6, characterized in that: The clamping branch chain (446) includes a third circular ring (4461) which is 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); a plurality of sliding rods (4462) which are evenly distributed in the circumference and slide through the vertical side wall of the U-shaped frame (443) are installed at one end of the third circular ring (4461) away from the rotating frame (41); a pushing circular plate (4463) is installed at one end of the plurality of sliding rods (4462) away from the third circular ring (4461); and a squeezing protrusion (4464) is installed at the middle part of one end of the pushing circular plate (4463) away from the sliding rod (4462).

9. A PVA film manufacturing performance testing device according to claim 1, characterized in that: The detection device (4) further comprises 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).

10. 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 9, including the following steps: S1: manually placing a plurality of films to be inspected in sequence in a plurality of placement mechanisms (32), and the placement mechanisms (32) clamp and limit the films; S2: rotating the rotating disk (31), and the rotating disk (31) drives the film to be tested to move to the position directly below the puncture mechanism (44) through the placement mechanism (32); S3: The rotating disk (31) rotates and drives the adjusting mechanism (33) to rotate, the adjusting mechanism (33) pushes the moving mechanism (43), and the moving mechanism (43) adjusts the detection angle of the acupuncture mechanism (44); S4: starting the feeding module (46), the feeding module (46) drives the puncture mechanism (44) to move downward through the rotating frame (41), the puncture mechanism (44) moves downward and performs puncture detection on the film, and then the feeding module (46) drives the puncture mechanism (44) to reset upward through the rotating frame (41); S5: Repeat steps S2-S4 until all the films are tested and the test is finished.

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