A device for testing the abrasion resistance of plastic film

Abstract

This invention provides a device for testing the abrasion resistance of plastic films, relating to the field of plastic film testing technology. It includes a base frame, a tooth-pressing mechanism, a fixing mechanism, a lifting platform, a friction mechanism, and an adsorption mechanism. The base frame is equipped with an unwinding component and a rewinding component. The tooth-pressing mechanism is used to press tooth marks onto the plastic film roll. The fixing mechanism is used to detach the portion enclosed by the tooth marks from the plastic film roll and fix the sample. The lifting platform is installed on one side of the fixing frame. The friction mechanism and the adsorption mechanism are located on opposite sides of the lifting platform and their relative positions can be switched. When the friction mechanism is located on the upper part of the plastic film, a friction test is performed on the plastic film. After the test, the positions of the adsorption mechanism and the friction mechanism are switched, and the adsorption mechanism adsorbs the sample to determine whether the sample meets the abrasion resistance requirements. This invention enables continuous testing of an entire roll of plastic film. After each sample test, convenient testing can be performed, and test results can be obtained quickly and easily.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of plastic film detection, in particular to a plastic film wear resistance detection device. BACKGROUND

[0002] Plastic film is widely used in packaging, agriculture, construction, medical treatment and other fields due to its excellent physical properties, chemical stability and low cost. With the increase of application scenarios of plastic film, the quality requirements for plastic film are becoming higher and higher, so a series of physical property detection needs to be carried out after the production of plastic film is completed.

[0003] Among them, the plastic film wear resistance detection is an important link to evaluate the mechanical wear resistance of the film surface, and the wear resistance of the film directly affects its use effect in packaging. If the wear resistance of the plastic film cannot meet the wear resistance requirement, when the plastic film is used as the outer packaging of the product, damage may occur during the product handling, moving or transportation, which may affect the appearance quality of the product, and even cause the product to be scrapped.

[0004] At present, when the wear resistance of the plastic film is detected, the plastic film needs to be cut into a sample of a specified size first, and then the sample is installed on a specified fixing mechanism. After a specified number of rubbings are carried out by a rubbing mechanism, the wear of the surface of the sample is observed. On the one hand, cutting and installing the sample consumes a lot of time, and it is difficult to realize continuous detection of the whole roll of plastic film. On the other hand, the workers need to observe the samples one by one after the test is completed, which is time-consuming and laborious, and the accuracy of the detection result cannot be guaranteed by observing with the naked eye. SUMMARY

[0005] The purpose of the present application is to provide a plastic film wear resistance detection device which can realize continuous test of the whole roll of plastic film, and the detection can be conveniently carried out after each sample test is completed, and the workers can quickly obtain the detection result after the detection of the whole roll of plastic film is completed.

[0006] The present application is realized by the following technical scheme: a plastic film wear resistance detection device, comprising:

[0007] A chassis is provided with an unwinding part and a winding part, and a flattening roller is arranged between the unwinding part and the winding part;

[0008] A pressure tooth mechanism is provided with a pressure tooth frame, a pressure tooth seat is arranged on the pressure tooth frame, a pressure tooth plate is arranged above the pressure tooth seat, and a plurality of pressure tooth rods are distributed in the circumferential direction at the bottom of the pressure tooth plate;

[0009] A fixing mechanism is provided with a fixing frame, a placing sleeve is arranged on the fixing frame, a pressing cover is arranged above the placing sleeve, and a through groove is formed in the top of the pressing cover;

[0010] The lifting platform comprises a lifting cylinder fixedly arranged on one side of a fixed frame, a fixed table is arranged on the piston rod of the lifting cylinder, a rotating table and a gear and tooth ring assembly for driving the rotating table to rotate are arranged on the fixed table.

[0011] The friction mechanism comprises a friction seat arranged on one side of the rotating table, a friction assembly is arranged at the end of the friction seat away from the rotating table, and a swing assembly for driving the friction assembly to swing is arranged on the friction seat.

[0012] The suction mechanism comprises a suction seat arranged on the side of the rotating table away from the friction seat, and a suction assembly is arranged at the end of the suction seat away from the rotating table.

[0013] The pressing mechanism and the fixed mechanism are provided with a downward pressing mechanism for simultaneously moving the pressing plate and the pressing cover downward and contacting the plastic film.

[0014] Further, the side of the fixed frame away from the lifting platform is provided with a pressing mechanism, the pressing mechanism comprises a pressing frame, a pressing assembly is arranged on the pressing frame, and the side of the suction seat is provided with a driving assembly for driving the pressing assembly to move downward to press the plastic film sheet into the placing sleeve.

[0015] Further, the pressing assembly comprises a pressing rod, a pressing ring and a top sheet, the pressing rod is slidingly arranged in the pressing frame in the vertical direction, the pressing ring is arranged at the bottom end of the pressing rod, and the top sheet is arranged at the top end of the pressing rod and provided with a return spring between the top sheet and the pressing frame.

[0016] Further, the driving assembly comprises a driving rod fixedly connected to the suction seat through a connecting rod; in the horizontal projection direction, the driving rod is in an arc shape and the center of the driving rod is consistent with the center of the rotating table; in the projection direction perpendicular to the fixed frame, the driving rod is in an inclined shape and the end of the driving rod away from the suction seat is lower than the end of the driving rod close to the suction seat.

[0017] Further, the downward pressing mechanism comprises a downward pressing cylinder, a downward pressing seat is arranged on the piston rod of the downward pressing cylinder, a first connecting rod is arranged between the downward pressing seat and the pressing plate, and a second connecting rod is arranged between the downward pressing seat and the pressing cover.

[0018] Further, a groove is formed in the pressing seat for the pressing rod to enter, a pressing ring is arranged at the bottom of the pressing plate, the inner diameter of the pressing ring is larger than the diameter of the groove, and a plurality of arc-shaped elastic sheets are connected between the pressing ring and the pressing plate.

[0019] Further, the top outer edge of the placing sleeve is circumferentially provided with a plurality of wedge-shaped blocks, and the bottom of the pressing cover is provided with a flared portion.

[0020] Further, the friction assembly comprises a mounting seat, the top of the mounting seat is rotationally connected to the friction seat through a rotating shaft, one end of the mounting seat is provided with a mounting disc, the bottom of the mounting disc is provided with a friction roller, the friction roller and the mounting disc are connected with a pressing spring, the top of the friction roller is provided with a guide rod on both sides, and the two sides of the mounting disc are provided with guide blocks in sliding fit with the guide rods; the swinging assembly comprises a drive electric cylinder, a drive rack is arranged on the piston rod of the drive electric cylinder, and a driven gear coaxially connected with the drive rack is arranged on the rotating shaft.

[0021] Further, the suction assembly comprises a suction disc, the suction disc is fixedly arranged at the bottom of the suction seat, one side of the suction disc is provided with a suction pump, and the suction pump is in communication with the suction disc through a suction pipe and can suck the suction disc to a negative pressure state.

[0022] Further, the fixing frame is further provided with a collecting cylinder, collecting rods are arranged in the collecting cylinder and the placing sleeve, sharp portions are arranged at the upward ends of the collecting rods, and a plurality of barb portions are circumferentially distributed on the collecting rods.

[0023] The technical scheme of the present application has at least the following advantages and beneficial effects:

[0024] 1. The present application can press a tooth mark line on the plastic film roll through the pressure tooth mechanism, separate the part enclosed by the tooth mark line from the plastic film roll through the fixing mechanism to obtain a test sample, and fix the test sample to facilitate subsequent wear resistance test, so that the test sample can be continuously taken and fixed on the whole plastic film roll, and the reliability of the test result is improved.

[0025] 2. The present application can conveniently switch the relative position by rotatingly installing the friction mechanism and the suction mechanism on the top of the lifting table, and after each friction test is completed, the suction mechanism is moved to the upper part of the test sample, and whether the test sample can be sucked up by the suction mechanism is used to judge whether the surface of the test sample is damaged, so that whether the test sample meets the wear resistance requirement is conveniently judged.

[0026] 3. The present application can collect the test sample that can be sucked by the collecting cylinder, press the test sample that cannot be sucked into the placing sleeve by the pressing mechanism, and after the detection of the whole plastic film roll is completed, the unqualified test samples in the placing sleeve and the qualified test samples in the collecting cylinder are counted, so that the pass rate of the test sample can be quickly calculated, and whether the wear resistance of the whole plastic film roll meets the requirement is judged. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present application.

[0028] Figure 2 This is a schematic diagram of the structure of the tooth pressing mechanism, fixing mechanism, lifting platform, friction mechanism, adsorption mechanism, pressing mechanism and resisting mechanism of the present invention;

[0029] Figure 3 This is a schematic diagram of the pressing mechanism, fixing mechanism, pressing mechanism and pressing mechanism of the present invention;

[0030] Figure 4 This is a schematic diagram of the tooth pressing seat and tooth pressing plate of the present invention;

[0031] Figure 5 This is a schematic diagram of the structure of the present invention, showing the placement of the sleeve and the clamping cap;

[0032] Figure 6 This is a schematic diagram of the adsorption mechanism and friction mechanism on the lifting platform when the adsorption mechanism of the present invention is working.

[0033] Figure 7 This is a schematic diagram of the adsorption mechanism and the friction mechanism on the lifting platform when the friction mechanism of the present invention is working.

[0034] Figure 8 This is a schematic diagram of the structure of the collection tube of the present invention;

[0035] Reference numerals: 1-Base frame, 11-Unwinding component, 12-Rewinding component, 13-Leveling rollers, 2-Pressure tooth mechanism, 21-Pressure tooth frame, 22-Pressure tooth seat, 221-Groove, 23-Pressure tooth plate, 231-Pressure ring, 232-Arc-shaped spring, 24-Pressure tooth rod, 3-Fixing mechanism, 31-Fixing frame, 32-Placement sleeve, 321-Wedge block, 33-Pressure cover, 331-Through groove, 332-Flanged part, 4-Lifting platform, 41-Lifting electric cylinder, 42-Fixing platform, 43-Rotating platform, 44-Gear and gear ring assembly, 5-Friction mechanism, 51-Friction seat, 52-Friction assembly, 521-Mounting base, 522-Rotating shaft, 523-Mounting disc, 5231-Guide block, 524-Friction roller 5241-Guide rod, 525-Clamping spring, 53-Swing assembly, 531-Drive electric cylinder, 532-Drive rack, 533-Driven gear, 6-Adsorption mechanism, 61-Adsorption seat, 62-Adsorption assembly, 621-Suction cup, 622-Suction pump, 623-Suction pipe, 63-Drive assembly, 631-Drive rod, 632-Connecting rod, 7-Pressing mechanism, 71-Pressing electric cylinder, 72-Pressing seat, 73-First connecting rod, 74-Second connecting rod, 8-Pressing mechanism, 81-Pressing frame, 82-Pressing assembly, 821-Pressing rod, 822-Pressing ring, 823-Top plate, 824-Reset spring, 9-Collection cylinder, 91-Collection rod, 911-Spiked part, 912-Barbed part. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0038] Example

[0039] The following is for reference Figures 1-8 As shown in the illustration, and further explained with reference to specific embodiments, this embodiment provides a device for testing the abrasion resistance of plastic films. Figure 1 , Figure 2 As shown, the system includes a base frame 1, a tooth pressing mechanism 2, a fixing mechanism 3, a lifting platform 4, a friction mechanism 5, and an adsorption mechanism 6. The base frame 1 is equipped with an unwinding component 11 and a winding component 12. Both the unwinding component 11 and the winding component 12 include a servo motor and a drive roller. The unwinding component 11 unwinds the plastic film roll, and the winding component 12 winds the unwound plastic film roll. A leveling roller 13 is provided on the base frame 1 between the unwinding component 11 and the winding component 12 to ensure the flatness of the unfolded portion of the plastic film roll. The tooth pressing mechanism 2 and the fixing mechanism 3 are both located on the base frame 1 between the unwinding component 11 and the winding component 12. The tooth pressing mechanism 2 is used to press tooth marks onto the plastic film roll, and the fixing mechanism 3 is used to detach the portion enclosed by the tooth marks from the plastic film roll to obtain a sample, and to fix the sample for subsequent abrasion resistance testing. The lifting platform 4 is height-adjustable and installed on one side of the fixed mechanism 3. The friction mechanism 5 and the adsorption mechanism 6 are respectively installed on opposite sides of the top of the lifting platform 4, and their relative positions can be switched. When the friction mechanism 5 moves towards the upper part of the plastic film, a friction test can be performed on the plastic film. After the test, the relative positions of the adsorption mechanism 6 and the friction mechanism 5 are switched, and the sample is adsorbed by the adsorption mechanism 6. If the sample can be adsorbed, it meets the wear resistance requirements; if the sample cannot be adsorbed, it indicates that the surface is damaged and does not meet the wear resistance requirements.

[0040] Reference Figure 2 , Figure 3As shown, the tooth pressing mechanism 2 includes a tooth pressing frame 21, a tooth pressing seat 22 on the tooth pressing frame 21, a tooth pressing plate 23 above the tooth pressing seat 22, and multiple tooth pressing rods 24 distributed circumferentially on the bottom of the tooth pressing plate 23; the fixing mechanism 3 includes a fixing frame 31, a placement sleeve 32 on the fixing frame 31, a pressing cover 33 above the placement sleeve 32, and a through groove 331 on the top of the pressing cover 33; a pressing mechanism 7 is provided between the tooth pressing mechanism 2 and the fixing mechanism 3. The pressing mechanism 7 drives the tooth pressing plate 23 and the pressing cover 33 to move downwards simultaneously and contact the plastic film. When the tooth pressing plate 23 moves downwards, it can drive the multiple tooth pressing rods 24 to press tooth marks on the plastic film. When the pressing cover 33 moves downwards, it can apply downward pressure to the plastic film to separate the part enclosed by the tooth marks from the rest of the plastic film to obtain the sample. As the pressing cover 33 continues to move downwards, it can fix the sample and ensure the stability of the sample during the friction test. It should be noted that the area of ​​the circular outline formed by the multiple pressure rods 24 is larger than the diameter of the pressure cap 33, so that after the pressure cap 33 is pressed onto the sample, the side of the pressure cap 33 can exert a better pressing effect on the outer edge of the sample.

[0041] Reference Figure 3 As shown, the pressing mechanism 7 includes a pressing electric cylinder 71, a pressing seat 72 is mounted on the piston rod of the pressing electric cylinder 71, a first connecting rod 73 is provided between the pressing seat 72 and the pressing tooth plate 23, and a second connecting rod 74 is provided between the pressing seat 72 and the pressing cover 33. Activating the pressing electric cylinder 71 moves the pressing seat 72 downwards, which in turn moves the pressing tooth plate 23 via the first connecting rod 73, and the pressing cover 33 via the second connecting rod 74. This allows the pressing cover 33 to detach from the sample while the pressing tooth plate 23 drives the pressing tooth rod 24 to press the tooth at the next position to obtain the next sample.

[0042] Reference Figure 3 , Figure 4 As shown, the pressure plate 22 has a groove 221 for the pressure rod 24 to enter, and a clamping ring 231 is provided at the bottom of the pressure plate 23. The inner diameter of the clamping ring 231 is larger than the diameter of the groove 221. Multiple arc-shaped spring pieces 232 are connected between the clamping ring 231 and the pressure plate 23. When the pressure plate 23 moves downward, the clamping ring 231 first contacts the plastic film to provide initial fixation for the plastic film. Then, the pressure rod 24 passes through the plastic film and enters the groove 221, pressing out pressure lines on the plastic film.

[0043] Reference Figure 3 , Figure 5As shown, multiple wedge-shaped blocks 321 are distributed circumferentially along the top outer edge of the placement sleeve 32, and a flared portion 332 is provided at the bottom of the clamping cover 33. When the clamping cover 33 moves downward to cover the placement sleeve 32, the combined action of the flared portion 332 and the multiple wedge-shaped blocks 321 allows the edge of the sample to be subjected to traction forces in multiple directions simultaneously in the circumferential direction, thereby ensuring that the sample is in a flat state at the position of the through groove 331 on the clamping cover, thus guaranteeing the reliability of the friction test.

[0044] Reference Figure 2 As shown, the lifting platform 4 includes a lifting cylinder 41, which is fixedly installed on one side of the fixed frame 31. A fixed platform 42 is fixedly installed on the piston rod of the lifting cylinder 41. The fixed platform 42 is provided with a rotating platform 43 and a gear ring assembly 44 for driving the rotating platform 43 to rotate. In the initial state, the friction mechanism 5 is located directly above the sample. Activating the lifting cylinder 41 drives the fixed platform 42 to descend, which enables the friction mechanism 5 to contact the sample and perform a friction test on the sample. After the test, activating the lifting cylinder 41 drives the fixed platform 42 to rise, and simultaneously activating the pressing cylinder 71 drives the pressing seat 72 to rise. The pressing seat 72 drives the pressing plate 23 and the pressing cover 33 to move simultaneously and separate from the plastic film. Then, the gear ring assembly 44 drives the rotating platform 43 to rotate 180°, which enables the adsorption mechanism 6 to be located directly above the sample. Activating the lifting cylinder 41 drives the fixed platform 42 to descend, which enables the adsorption mechanism 6 to adsorb the sample.

[0045] Reference Figure 2 As shown, a pressing mechanism 8 is provided on the side of the fixed frame 31 away from the lifting platform 4. The pressing mechanism 8 includes a pressing frame 81, on which a pressing component 82 is provided. A driving component 63 is provided on one side of the adsorption seat 61 to drive the pressing component 82 downward to press the plastic film into the placement sleeve 32. A collection cylinder 9 is also provided on the fixed frame 31, located on the side of the lifting platform 4 away from the plastic film. When the adsorption mechanism 6 adsorbs the sample, samples with undamaged surfaces can be picked up. After switching the relative positions of the friction mechanism 5 and the adsorption mechanism 6, the adsorption mechanism 6 moves the sample to the upper part of the collection cylinder 9. Releasing the sample allows it to fall into the collection cylinder 9. Samples with damaged surfaces cannot be picked up and will remain on the placement sleeve 32. The driving component 63 drives the pressing component 82 downward to press the plastic film sample into the interior of the placement sleeve 32, preventing it from hindering the next test. After testing the abrasion resistance of the entire roll of plastic film, staff only need to count the unqualified samples in sleeve 32 and the qualified samples in collection tube 9 to quickly calculate the pass rate of the samples and determine whether the abrasion resistance of the entire roll of plastic film meets the requirements.

[0046] Reference Figure 2 , Figure 3As shown, the pressing assembly 82 includes a pressing rod 821, a pressing ring 822, and a top plate 823. The pressing rod 821 is slidably disposed within the pressing frame 81 in a vertical direction. The pressing ring 822 is disposed at the bottom end of the pressing rod 821, and the top plate 823 is disposed at the top end of the pressing rod 821. A return spring 824 is disposed between the top plate 823 and the pressing frame 81. In the initial state, under the elastic force of the return spring 824, the pressing ring 822 is located above the plastic film and does not obstruct the sample fixing process, friction test process, or adsorption process. After the adsorption mechanism 6 adsorbs the sample and moves upward, the driving assembly 63 presses the top plate 823 and causes the pressing rod 821 to drive the pressing ring 822 downward into the placement sleeve 32. When the sample on the placement sleeve 32 is worn and cannot be adsorbed by the adsorption mechanism 6, it will remain on the top of the placement sleeve 32. The pressing ring 822 can press the sample downward into the interior of the placement sleeve 32.

[0047] Reference Figure 2 , Figure 6 As shown, the drive assembly 63 includes a drive rod 631, which is fixedly connected to the adsorption seat 61 via a connecting rod 632. In the horizontal projection direction, the drive rod 631 is arc-shaped and the center of the drive rod 631 coincides with the center of the rotating table 43. In the projection direction perpendicular to the fixed frame 31, the drive rod 631 is inclined and the end of the drive rod 631 away from the adsorption seat 61 is lower than the end of the drive rod 631 near the adsorption seat 61. After the adsorption process is completed, when the gear ring assembly 44 drives the rotating table 43 to rotate 180° again, the drive rod 631 can apply downward pressure to the pressing rod 821 as it moves synchronously with the adsorption seat 61, so that the pressing ring 822 presses the sample remaining on the top of the placement sleeve 32 into the placement sleeve 32. When the drive rod 631 separates from the pressing rod 821, the pressing rod 821 can move back to the initial position under the elastic force of the return spring 824 and drive the pressing ring 822 to move to the upper part of the placement sleeve 32, so as to facilitate the return to the initial state after each pressing process of the sample.

[0048] Reference Figure 2 , Figure 7As shown, the friction mechanism 5 includes a friction seat 51, which is disposed on one side of the rotating table 43. A friction component 52 is disposed at the end of the friction seat 51 away from the rotating table 43. A swing component 53 for driving the friction component 52 to swing is disposed on the friction seat 51. The friction component 52 includes a mounting base 521, the top of which is rotatably connected to the friction seat 51 via a rotating shaft 522. A mounting plate 523 is disposed at one end of the mounting base 521. A friction roller 524 is disposed at the bottom of the mounting plate 523. A clamping spring 525 is connected between the friction roller 524 and the mounting plate 523. Guide rods 5241 are disposed on both sides of the top of the friction roller 524. Guide blocks 5231 that slide with the guide rods 5241 are disposed on both sides of the mounting plate 523. The lifting cylinder 41 drives the fixed platform 42 to descend to the designated position. The friction roller 524 contacts the sample and compresses the clamping spring 525, applying a specified amount of pressure to the sample. When the swing assembly 53 drives the friction assembly 52 to swing, it can rub back and forth on the sample a specified number of times to achieve the purpose of the friction test. During the swing, the cooperation between the guide block 5231 and the guide rod 5241 can prevent the clamping spring 525 from bending and affecting the applied pressure.

[0049] Reference Figure 7 As shown, the swing assembly 53 includes a drive cylinder 531, a drive rack 532 is mounted on the piston rod of the drive cylinder 531, and a driven gear 533 coaxially connected to the rotating shaft 522 and meshing with the drive rack 532. The forward and reverse movement of the drive cylinder 531 drives the drive rack 532 to reciprocate. During this movement, the drive rack 532 can drive the gear to rotate forward or backward within a specified angle, thereby causing the friction assembly 52 to swing reciprocally to perform reciprocating friction on the sample.

[0050] Reference Figure 6 As shown, the adsorption mechanism 6 includes an adsorption seat 61, which is located on the side of the rotating platform 43 away from the friction seat 51. An adsorption assembly 62 is located at the end of the adsorption seat 61 away from the rotating platform 43. The adsorption assembly 62 includes a suction cup 621, which is fixedly located at the bottom of the adsorption seat 61. A suction pump 622 is located on one side of the suction cup 621. The suction pump 622 is connected to the suction cup 621 via a suction pipe 623 and can draw the suction cup 621 to a negative pressure state. When the suction pump 622 is turned on and the suction cup 621 is drawn to a negative pressure state via the suction pipe 623, a vacuum area is formed between the suction cup 621 and the sample when the sample surface has no wear areas, thus allowing the sample to be lifted. When the sample surface has wear areas, no vacuum area is formed between the suction cup 621 and the sample; therefore, when the suction cup 621 detaches from the sample, the sample remains inside the placement sleeve 32.

[0051] Reference Figure 2 , Figure 8As shown, both the collecting cylinder 9 and the placing sleeve 32 are equipped with collecting rods 91. The upward-facing end of the collecting rod 91 is provided with a spike 911, and the collecting rod 91 has multiple barbs 912 distributed circumferentially. When the vacuum suction cup 621 places the sample into the collecting cylinder 9 or the pressure ring 822 presses the sample into the placing sleeve 32, the spike 911 of the collecting rod 91 can puncture the sample to facilitate its entry. Then, the sample passes through the barbs 912 on the collecting rod 91. The barbs 912 can fix the sample and prevent it from moving in the opposite direction, thus ensuring the stability of the sample.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for detecting the abrasion resistance of a plastic film, characterized by Include: The chassis (1) is provided with unwinding part (11) and winding part (12), the unwinding part (11) and winding part (12) are provided with flattening roller (13) between; The pressure tooth mechanism (2) includes pressure tooth frame (21), the pressure tooth frame (21) is provided with pressure tooth seat (22), the top of pressure tooth seat (22) is provided with pressure tooth plate (23), the bottom of pressure tooth plate (23) is circumferentially distributed with a plurality of pressure tooth rod (24); The fixing mechanism (3) includes fixing frame (31), the fixing frame (31) is provided with placing sleeve (32), the top of placing sleeve (32) is provided with compression cover (33), the top of compression cover (33) is provided with through slot (331); The lifting platform (4) includes lifting electric cylinder (41), the lifting electric cylinder (41) is fixedly arranged on one side of fixing frame (31), the piston rod of lifting electric cylinder (41) is provided with fixed platform (42), the fixed platform (42) is provided with rotating platform (43) and gear ring assembly (44) for driving rotating platform (43) to rotate; The friction mechanism (5) includes friction seat (51), the friction seat (51) is arranged on one side of rotating platform (43), the end of friction seat (51) away from rotating platform (43) is provided with friction assembly (52) and swing assembly (53) for driving friction assembly (52) to swing; The adsorption mechanism (6) includes adsorption seat (61), the adsorption seat (61) is arranged on one side of rotating platform (43) away from friction seat (51), the end of adsorption seat (61) away from rotating platform (43) is provided with adsorption assembly (62); Wherein, the pressure tooth mechanism (2) and fixing mechanism (3) are provided with down pressure mechanism (7) for driving pressure tooth plate (23) and compression cover (33) to move downward and contact with plastic film at the same time; The unwinding part (11) and winding part (12) both include servo motor and driving roller, the unwinding part (11) can unwind plastic film roll, the winding part (12) can wind the unwound plastic film roll; The pressure tooth mechanism (2) and fixing mechanism (3) are both arranged on the chassis (1) and located between the unwinding part (11) and winding part (12), the pressure tooth mechanism (2) is used for pressing out tooth mark line on plastic film roll, the fixing mechanism (3) is used for separating the part surrounded by tooth mark line from plastic film roll to obtain sample, and the sample is fixed to facilitate subsequent wear resistance test; The lifting platform (4) can be installed on one side of fixing mechanism (3) and can be lifted, the friction mechanism (5) and adsorption mechanism (6) are respectively installed on the top of lifting platform (4) opposite sides, and the relative positions can be switched; When the friction mechanism (5) moves to the upper part of the plastic film in the direction close to the plastic film, the plastic film can be subjected to a friction test. After the test is completed, the relative positions of the adsorption mechanism (6) and the friction mechanism (5) are switched, and the sample is adsorbed by the adsorption mechanism (6). If the sample can be adsorbed, it meets the wear resistance requirement. If the sample cannot be adsorbed, it indicates that the surface is damaged and does not meet the wear resistance requirement.

2. The device for detecting the abrasion resistance of a plastic film according to claim 1, wherein The side away from the lifting platform (4) of the fixing frame (31) is provided with a pressing mechanism (8), the pressing mechanism (8) comprises a pressing frame (81), the pressing frame (81) is provided with a pressing assembly (82), and one side of the adsorption seat (61) is provided with a driving assembly (63) for driving the pressing assembly (82) to move downward to press the plastic film sheet into the placement sleeve (32).

3. The device for detecting the abrasion resistance of a plastic film according to claim 2, wherein The pressing assembly (82) comprises a pressing rod (821), a pressing ring (822) and a top sheet (823), the pressing rod (821) is vertically slidably arranged in the pressing frame (81), the pressing ring (822) is arranged at the bottom end of the pressing rod (821), and the top sheet (823) is arranged at the top end of the pressing rod (821) and is provided with a reset spring (824) between the top sheet (823) and the pressing frame (81).

4. The device for detecting abrasion resistance of plastic film according to claim 2, wherein The driving assembly (63) comprises a driving rod (631), and the driving rod (631) is fixedly connected to the adsorption seat (61) through a connecting rod (632). In the horizontal projection direction, the driving rod (631) is arc-shaped, and the center of the driving rod (631) is consistent with the center of the rotating table (43). In the projection direction perpendicular to the fixing frame (31), the driving rod (631) is inclined, and the end of the driving rod (631) away from the adsorption seat (61) is lower than the end of the driving rod (631) close to the adsorption seat (61).

5. The device for detecting abrasion resistance of plastic film according to claim 1, wherein The lower pressing mechanism (7) comprises a lower pressing electric cylinder (71), a lower pressing seat (72) is arranged on the piston rod of the lower pressing electric cylinder (71), a first connecting rod (73) is arranged between the lower pressing seat (72) and the pressure tooth plate (23), and a second connecting rod (74) is arranged between the lower pressing seat (72) and the pressing cover (33).

6. The device for detecting abrasion resistance of plastic film according to claim 1, wherein The pressure tooth seat (22) is provided with a groove (221) for the pressure tooth rod (24) to enter, the bottom of the pressure tooth plate (23) is provided with a pressing ring (231), the inner diameter of the pressing ring (231) is greater than the diameter of the groove (221), and a plurality of arc-shaped elastic sheets (232) are connected between the pressing ring (231) and the pressure tooth plate (23).

7. The device for detecting abrasion resistance of plastic film according to claim 1, wherein The top of the placement sleeve (32) is circumferentially provided with a plurality of wedge-shaped blocks (321), and the bottom of the pressing cover (33) is provided with an expanded portion (332).

8. The device for detecting abrasion resistance of plastic film according to claim 1, wherein The friction assembly (52) comprises a mounting seat (521), the top of the mounting seat (521) is rotationally connected to the friction seat (51) through a rotating shaft (522), one end of the mounting seat (521) is provided with a mounting disc (523), the bottom of the mounting disc (523) is provided with a friction roller (524), the friction roller (524) and the mounting disc (523) are connected with a pressing spring (525), the top of the friction roller (524) is provided with a guide rod (5241) on both sides, and the two sides of the mounting disc (523) are provided with guide blocks (5231) in sliding fit with the guide rods (5241); the swing assembly (53) comprises a driving electric cylinder (531), a driving rack (532) is arranged on the piston rod of the driving electric cylinder (531), and a driven gear (533) in mesh with the driving rack (532) is coaxially connected to the rotating shaft (522).

9. The device for detecting abrasion resistance of plastic film according to claim 1, wherein The adsorption assembly (62) comprises a suction disc (621), the suction disc (621) is fixedly arranged at the bottom of the adsorption seat (61), one side of the suction disc (621) is provided with a suction pump (622), the suction pump (622) is communicated with the suction disc (621) through a suction pipe (623) and can suck the suction disc (621) to a negative pressure state.

10. The device for detecting abrasion resistance of plastic film according to claim 1, wherein The fixing frame (31) is also provided with a collecting cylinder (9), the collecting cylinder (9) and the placing sleeve (32) are both provided with a collecting rod (91), one end of the collecting rod (91) upwards is provided with a sharp part (911), and a plurality of barb parts (912) are distributed on the collecting rod (91) in the circumferential direction.

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