Equipment and method for detecting aging degree of acid and alkali resistant aluminum-plastic composite film

Abstract

The invention discloses equipment and a method for detecting the aging degree of an acid and alkali resistant aluminum-plastic composite film, and relates to the technical field of composite film detection. According to the equipment and method for detecting the aging degree of the acid and alkali resistant aluminum-plastic composite film, through the arrangement of the detection assembly, when the composite film body is detected, the multiple ventilation ends making contact with the composite film body can be compressed into the corresponding conical suction cups, and through operation of the negative pressure device, the ventilation ends can be clamped into the corresponding conical suction cups; the plurality of conical suction cups in contact with the composite film body can keep a certain adsorption force, so that the phenomenon that the conical suction cups fall off in the detection process is avoided, and the conical suction cups not in contact with the composite film body can keep a closed state at the moment; therefore, the equipment can be suitable for detecting the composite film bodies with different sizes, the operation convenience of the equipment is improved, and the application range of the equipment is widened.

Description

Technical Field

[0001] The invention relates to the technical field of composite film detection, in particular to an aging degree detection device and method for an acid- and alkali-resistant aluminum-plastic composite film. Background Art

[0002] Aluminum-plastic composite film is a packaging product with low cost, exquisite printing, anti-static and UV protection. It is mostly used for soft packaging, and can play the functions of shielding, printing and heat sealing. It is widely used in food, medicine, cosmetics and office consumer products packaging, and partially replaces glass, tinplate, paper and cardboard packaging materials. Because the molecular chain contains urethane group (-NHCOO-) and or isocyanate group (-NCO-), polyurethane adhesive has excellent performance. At present, more than 90% of the dry composite manufacturing processes of composite films use polyurethane adhesive. Referring to the Chinese patent, the announcement number is "CN216791976U" "A film high temperature resistance test device", the patent points out that the existing detection method has a long waiting time, which affects the working efficiency of film detection; but the above equipment is difficult to detect the tensile strength and peeling resistance of the film under different climates. In this regard, we propose an acid and alkali resistant aluminum-plastic composite film aging degree detection device and method to solve the above problems. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an aging degree detection device and method for an acid- and alkali-resistant aluminum-plastic composite film, which solves the problems raised in the above-mentioned background technology.

[0004] To achieve the above purpose, the present invention is implemented by the following technical scheme: an aging degree detection device for acid-alkali resistant aluminum-plastic composite film, comprising a machine body, both ends of the machine body are rotatably installed with feed rollers, and a composite film body is fed by the feed rollers, a cooling zone and a heating zone are arranged inside the machine body, respectively used for cooling and heating the composite film body, a plurality of partition components are arranged inside the machine body, used for separating the cooling zone and the heating zone, and realizing positioning of the composite film body to be tested;

[0005] The body is provided with a plurality of detection components for detecting the tensile strength and peeling resistance of the composite film body. The detection components include a detection plate frame, a concave frame is installed in the middle of the outer side of the detection plate frame, and a hydraulic cylinder is connected between the concave frame and the inner wall of the body, which is used to drive the detection plate frame to move up and down inside the body. A plurality of tensile detection instruments are fixed inside the detection plate frame, and conical suction cups are fixed at the ends of the tensile detection instruments. The conical suction cups are used to be adsorbed to the outer surface of the composite film body to realize the detection of tensile strength and peeling resistance;

[0006] A negative pressure device is fixed inside the detection plate frame, and the negative pressure device is connected to a plurality of conical suction cups. A bottom sealing plate is installed at the end of the conical suction cup, and a ventilation end is slidably installed inside the bottom sealing plate, and a plurality of arc-shaped ventilation holes are opened inside the ventilation end. A return spring is sleeved on the outside of the ventilation end, and the bottom sealing plate is used to retract into the conical suction cup when under pressure, so that the conical suction cup is connected to the outside through the plurality of arc-shaped ventilation holes.

[0007] Preferably, a plurality of telescopic sleeve rods are fixed to the side surfaces of the detection plate rack, and the other ends of the telescopic sleeve rods are fixedly connected to the inner wall of the machine body, and the telescopic sleeve rods are used to telescope along with the operation of the detection plate rack.

[0008] Preferably, a connecting pipe is fixedly installed at the bottom of the detection plate frame, the connecting pipe is connected to the negative pressure device, and a connecting hose is connected between the connecting pipe and the multiple conical suction cups.

[0009] Preferably, a plurality of the conical suction cups are each provided with an assembly hole, and the end of the connecting hose is fixedly installed in the corresponding assembly hole.

[0010] Preferably, sealing rings are fixedly installed at the ends of the plurality of conical suction cups, retaining rings are fixedly installed inside the plurality of conical suction cups, and the bottom sealing plate is fixedly connected to the retaining rings.

[0011] Preferably, a stop ring is fixedly mounted on the outer sides of the plurality of ventilation ends.

[0012] Preferably, the partition assembly includes an upper sealing frame and a lower sealing frame, both of which are fixed inside the machine body, and sliding sealing plates are slidably installed inside the upper sealing frame and the lower sealing frame, and a driving cylinder is fixed between the sliding sealing plate and the inner wall of the machine body for driving the sliding sealing plate to slide up and down, and multiple sealing plates are fixed at the ends of the sliding sealing plate.

[0013] Preferably, a connecting transverse plate is fixed between two adjacent sliding sealing plates, and rectangular notches are provided on both sides of the upper sealing frame and the lower sealing frame, and the connecting transverse plate is slidably connected to the rectangular notches.

[0014] Preferably, limit frames are fixed on both sides of the interior of the machine body, and bearings are slidably installed inside the limit frames, spring bodies are fixed between the bearings and the inner walls of the limit frames, and two corresponding bearings are rotatably connected with rotating shafts, a pressure roller is sleeved on the outer side of the rotating shaft, a pushing roller is provided on the outer side of the pressure roller, and limit rings are rotatably installed on both ends of the pushing roller, a connecting rod is fixed on the outer side of the limit ring, the connecting rod is rotatably connected to the corresponding limit frame, and a supporting spring is fixed between the limit frame and the connecting rod.

[0015] The present invention also discloses a method for detecting an acid- and alkali-resistant aluminum-plastic composite film, which specifically comprises the following steps:

[0016] S1, firstly, the composite film body is conveyed to the inside of the machine body by bypassing the feeding roller, and during the detection, as the partition assembly runs, the cooling zone and the heating zone can be closed by the cooperation of the upper sealing frame, the lower sealing frame and the sliding sealing plate, and the position of the composite film body is fixed, and then the cooling and heating treatment of the position to be tested of the composite film body are respectively realized;

[0017] S2. By moving the detection plate frame toward the composite film body, multiple ventilation ends can be brought into contact with the composite film body, so that the ventilation ends are compressed into the corresponding conical suction cups. At this time, the conical suction cups and the composite film body fit each other. As the negative pressure device runs, the adsorption process of the composite film body is completed, and then the detection plate frame is moved to the side away from the composite film body for reset, thereby realizing the detection of the tensile strength and peeling resistance of the composite film body.

[0018] The present invention provides an aging degree detection device and method for an acid- and alkali-resistant aluminum-plastic composite film. Compared with the prior art, it has the following beneficial effects:

[0019] (1) The device and method for detecting the aging degree of the acid- and alkali-resistant aluminum-plastic composite film, through the setting of the detection component, when the composite film body is being detected, multiple ventilation ends in contact with the composite film body can be compressed into corresponding conical suction cups, and through the operation of the negative pressure device, the multiple conical suction cups in contact with the composite film body can maintain a certain adsorption force, thereby preventing the conical suction cups from falling off during the detection process. At this time, the conical suction cups that are not in contact with the composite film body can remain in a closed state, so that the device can be applicable to the detection of composite film bodies of different sizes, thereby improving the convenience of operation and the scope of application of the device.

[0020] (2) The aging degree detection device and method of the acid- and alkali-resistant aluminum-plastic composite film, through the setting of the push roller, the push roller can contact the bottom of the composite film body, and the composite film body passes through two pressure rollers. The push roller, the connecting rod and the support spring can support the composite film body, so that the composite film body always maintains a certain tension during the transportation process, thereby ensuring the accuracy of subsequent detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 For the present invention Figure 1 Schematic diagram of the cross-section structure;

[0023] Figure 3 For the present invention Figure 2 Look at the structural diagram;

[0024] Figure 4 This is a schematic diagram of the structure of the separation component of the present invention;

[0025] Figure 5 It is a schematic diagram of the structure of the pressing roller and the pushing roller of the present invention;

[0026] Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle;

[0027] Figure 7 This is a schematic diagram of the structure of the detection component of the present invention;

[0028] Figure 8 It is a schematic diagram of the cross-sectional structure of the detection plate frame of the present invention;

[0029] Fig. 9 It is a schematic diagram of the cross-sectional structure of the conical suction cup of the present invention;

[0030] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at B in the middle.

[0031] In the figure: 1, machine body; 2, feed roller; 3, composite film body; 4, upper sealing frame; 5, lower sealing frame; 501, rectangular notch; 6, sliding sealing plate; 601, sealing sheet; 7, connecting cross plate; 8, driving cylinder; 9, limiting frame; 10, rotating shaft; 1001, bearing; 1002, spring body; 1003, pressing roller; 11, pushing roller; 1101, limiting ring; 1102, connecting rod; 1103, supporting spring; 12 , detection plate frame; 1201, concave frame; 13, hydraulic cylinder; 14, telescopic sleeve; 15, negative pressure device; 1501, connecting pipe; 1502, connecting hose; 16, tension detection instrument; 17, conical suction cup; 1701, assembly hole; 1702, sealing ring; 1703, retaining ring; 18, bottom sealing plate; 19, ventilation end; 1901, reset spring; 1902, arc vent; 1903, stop ring. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 10 The present invention provides two technical solutions, which specifically include the following embodiments:

[0034] Embodiment 1:

[0035] In an embodiment of the present invention, an aging degree detection device for an acid-alkali resistant aluminum-plastic composite film comprises a machine body 1, both ends of the machine body 1 are rotatably mounted with feed rollers 2, and a composite film body 3 is conveyed by the feed rollers 2, the feed rollers 2 are used to convey the composite film body 3, a cooling zone and a heating zone are arranged inside the machine body 1, a heating module and a cooling module are arranged inside the cooling zone and the heating zone respectively, the heating module and the cooling module are both existing devices and both realize temperature control based on a PLC control module, the heating module and the cooling module are respectively used to cool and heat the composite film body 3, so as to facilitate the simulation of the tensile strength and peeling resistance of the composite film body 3 under different temperature environments, a plurality of groups of partition components are arranged inside the machine body 1, which are used to separate the cooling zone and the heating zone, and realize the positioning of the composite film body 3 to be tested, so as to reduce the influence of the temperature of the cooling zone and the heating zone during the detection process, and at the same time, ensure the detection stability and detection effect by positioning the composite film body 3;

[0036] In the embodiment of the present invention, specifically, in the current dry composite manufacturing process of the composite film body 3, more than 90% of them use polyurethane adhesives, and different polyurethane adhesives have different weather resistance, which will cause the tensile strength and peeling resistance of the composite film body 3 to change under different annular shapes and different temperatures;

[0037] In the embodiment of the present invention, specifically, the polyurethane adhesive is prepared from silicone diol, modified long carbon chain diol, nanoparticles, heat-resistant polyester diol, polyisocyanate, silane coupling agent, and stabilizer;

[0038] In the embodiment of the present invention, further, a plurality of detection components are provided inside the machine body 1 for detecting the tensile strength and peeling resistance of the composite film body 3, the detection components include a detection plate frame 12, a concave frame 1201 is installed in the middle of the outer side of the detection plate frame 12, and a hydraulic cylinder 13 is connected between the concave frame 1201 and the inner wall of the machine body 1, for driving the detection plate frame 12 to move up and down inside the machine body 1, a plurality of tension detection instruments 16 are fixed inside the detection plate frame 12, and conical suction cups 17 are fixed at the ends of the tension detection instruments 16, the conical suction cups 17 are used to be adsorbed to the outer surface of the composite film body 3 to realize the detection of tensile strength and peeling resistance, during the detection, as the two detection plate frames 12 approach the composite film body 3 until they merge, at this time, the plurality of conical suction cups 17 can be pressurized, so that the conical suction cups 17 and the composite film body 3 are connected to each other, and the ventilation end 19 that is not in contact with the outer surface of the composite film body 3 always maintains the initial position;

[0039] In the embodiment of the present invention, the tension detection instrument 16 is an existing device, which is used to determine the tensile strength and peeling resistance of the composite film body 3 by recording the tension value;

[0040] In the embodiment of the present invention, specifically, a negative pressure device 15 is fixed inside the detection plate frame 12, and the negative pressure device 15 is connected to a plurality of conical suction cups 17. A bottom sealing plate 18 is installed at the end of the conical suction cup 17, and a ventilation end 19 is slidably installed inside the bottom sealing plate 18, and a plurality of arc-shaped ventilation holes 1902 are opened inside the ventilation end 19, and a return spring 1901 is sleeved on the outer side of the ventilation end 19. The bottom sealing plate 18 is used to retract into the conical suction cup 17 when under pressure, so that the conical suction cup 17 is connected to the outside through the plurality of arc-shaped ventilation holes 1902. When the ventilation end 19 is in the initial position, the plurality of arc-shaped ventilation holes 1902 are in a closed state, which is used to ensure that when the negative pressure device 15 is running, the plurality of conical suction cups 17 in contact with the composite film body 3 can maintain a certain adsorption force, thereby avoiding the conical suction cup 17 from falling off during the detection process. At the same time, it can also be applied to the detection operation of composite film bodies 3 of different sizes, thereby improving the convenience of operation and the scope of application of the equipment.

[0041] In the embodiment of the present invention, specifically, a plurality of telescopic sleeve rods 14 are fixed to the side of the detection plate frame 12, and the other ends of the telescopic sleeve rods 14 are fixedly connected to the inner wall of the body 1, and the telescopic sleeve rods 14 are used to extend and retract as the detection plate frame 12 moves;

[0042] In the embodiment of the present invention, specifically, a connecting pipe 1501 is fixedly installed at the bottom of the detection plate frame 12, the connecting pipe 1501 is connected to the negative pressure device 15, and a connecting hose 1502 is connected between the connecting pipe 1501 and the plurality of conical suction cups 17. By setting the connecting hose 1502, the value of the tension detection instrument 16 can be prevented from being affected during the detection process;

[0043] In the embodiment of the present invention, specifically, a plurality of conical suction cups 17 are provided with assembly holes 1701 inside, and the ends of the connecting hoses 1502 are fixedly installed inside the corresponding assembly holes 1701;

[0044] In the embodiment of the present invention, specifically, the ends of the plurality of conical suction cups 17 are fixedly installed with sealing rings 1702, the interiors of the plurality of conical suction cups 17 are fixedly installed with retaining rings 1703, the bottom sealing plate 18 is fixedly connected to the retaining rings 1703, and the sealing rings 1702 are used to ensure the adsorption effect between the conical suction cups 17 and the composite film body 3;

[0045] In the embodiment of the present invention, specifically, the end of the ventilation terminal 19 is set to be conical, so as to prevent the ventilation terminal 19 from sliding under force when the negative pressure device 15 is running, and the reset spring 1901 is used to realize the reset operation of the ventilation terminal 19;

[0046] In the embodiment of the present invention, specifically, a stop ring 1903 is fixedly installed on the outer side of each of the plurality of ventilation ends 19;

[0047] In the embodiment of the present invention, further, the partition assembly includes an upper sealing frame 4 and a lower sealing frame 5, both of which are fixed inside the machine body 1, and sliding sealing plates 6 are slidably installed inside the upper sealing frame 4 and the lower sealing frame 5, and a driving cylinder 8 is fixed between the sliding sealing plate 6 and the inner wall of the machine body 1, which is used to drive the sliding sealing plate 6 to slide up and down, and a plurality of sealing sheets 601 are fixed to the end of the sliding sealing plate 6. During detection, as the sliding sealing plate 6 slides toward the composite film body 3 until it contacts it, and through the cooperation of the sealing sheets 601, the composite film body 3 is fixed, and the cooling zone and the heating zone are separated at the same time, and then the composite film body 3 is cooled and heated respectively, which effectively improves the operating efficiency of the equipment;

[0048] In the embodiment of the present invention, specifically, a connecting transverse plate 7 is fixed between two adjacent sliding sealing plates 6, and the connecting transverse plate 7 is used for transmission, so that multiple sliding sealing plates 6 can run simultaneously, and rectangular grooves 501 are opened on both sides of the upper sealing frame 4 and the lower sealing frame 5, and the connecting transverse plate 7 is slidably connected to the rectangular grooves 501.

[0049] The embodiment of the present invention also discloses a method for detecting an acid- and alkali-resistant aluminum-plastic composite film, which specifically comprises the following steps:

[0050] S1, firstly, the composite film body 3 is conveyed to the inside of the machine body 1 by bypassing the feeding roller 2. During the detection, as the partition assembly is running, the cooling area and the heating area can be closed by the cooperation of the upper sealing frame 4, the lower sealing frame 5 and the sliding sealing plate 6, and the position of the composite film body 3 is fixed, and then the cooling and heating treatment of the position to be tested of the composite film body 3 are respectively realized;

[0051] S2. By moving the detection plate frame 12 toward the composite film body 3, multiple ventilation ends 19 can be brought into contact with the composite film body 3, so that the ventilation ends 19 are compressed into the corresponding conical suction cups 17. At this time, the conical suction cups 17 and the composite film body 3 are in contact with each other. As the negative pressure device 15 runs, the adsorption process of the composite film body 3 is completed, and then the detection plate frame 12 is moved to the side away from the composite film body 3 to reset, thereby realizing the detection of the tensile strength and peeling resistance of the composite film body 3.

[0052] Embodiment 2: Based on embodiment 1, on the basis of embodiment 1, both sides of the body 1 are fixed with limit frames 9, and bearings 1001 are slidably installed inside the limit frames 9, spring bodies 1002 are fixed between the bearings 1001 and the inner wall of the limit frames 9, and the two corresponding bearings 1001 are rotatably connected with the rotating shaft 10, the outer side of the rotating shaft 10 is sleeved with a pressure roller 1003, and the outer side of the pressure roller 1003 is provided with a push roller 11, and both ends of the push roller 11 are rotatably installed with limit rings 1101, and the outer side of the limit ring 1101 is fixed with a connecting rod 1102, and the connecting rod 1102 It is rotatably connected to the corresponding limit frame 9, and a support spring 1103 is fixed between the limit frame 9 and the connecting rod 1102. When the composite film body 3 bypasses the feed roller 2 and penetrates into the machine body 1, the push roller 11 can contact the bottom of the composite film body 3. The composite film body 3 passes through the two pressure rollers 1003, and the push roller 11 and the connecting rod 1102 and the support spring 1103 cooperate to support the composite film body 3, so that the composite film body 3 always maintains a certain tension during the transportation process, thereby ensuring the accuracy of subsequent detection.

[0053] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0054] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. An aging degree detection device for an acid- and alkali-resistant aluminum-plastic composite film, comprising a body (1), characterized in that: Feed rollers (2) are rotatably mounted at both ends of the machine body (1), and a composite film body (3) is fed by the feed rollers (2). A cooling zone and a heating zone are provided inside the machine body (1), which are used to cool and heat the composite film body (3), respectively. A plurality of partition components are provided inside the machine body (1), which are used to separate the cooling zone and the heating zone and realize positioning of the composite film body (3) to be tested; The machine body (1) is provided with a plurality of detection components for detecting the tensile strength and peeling resistance of the composite film body (3), the detection components comprising a detection plate frame (12), a concave frame (1201) being installed in the middle of the outer side of the detection plate frame (12), and a hydraulic cylinder (13) being connected between the concave frame (1201) and the inner wall of the machine body (1), for driving the detection plate frame (12) to move up and down inside the machine body (1), a plurality of tensile detection instruments (16) being fixed inside the detection plate frame (12), and conical suction cups (17) being fixed at the ends of the tensile detection instruments (16), the conical suction cups (17) being used to be adsorbed to the outer surface of the composite film body (3), so as to realize the detection operation of tensile strength and peeling resistance; A negative pressure device (15) is fixed inside the detection plate frame (12), and the negative pressure device (15) is connected to a plurality of conical suction cups (17). A bottom sealing plate (18) is installed at the end of the conical suction cup (17), and a ventilation terminal (19) is slidably installed inside the bottom sealing plate (18), and a plurality of arc-shaped ventilation holes (1902) are opened inside the ventilation terminal (19), and a return spring (1901) is sleeved on the outside of the ventilation terminal (19). The bottom sealing plate (18) is used to retract into the conical suction cup (17) when under pressure, so that the conical suction cup (17) is connected to the outside through the plurality of arc-shaped ventilation holes (1902).

2. The aging degree detection device of the acid-alkali resistant aluminum-plastic composite film according to claim 1 is characterized in that: A plurality of telescopic sleeves (14) are fixed to the side surfaces of the detection plate frame (12), and the other ends of the telescopic sleeves (14) are fixedly connected to the inner wall of the machine body (1), and the telescopic sleeves (14) are used to extend and retract as the detection plate frame (12) moves.

3. The aging degree detection device of the acid-alkali resistant aluminum-plastic composite film according to claim 1 is characterized in that: A connecting pipe (1501) is fixedly installed at the bottom of the detection plate frame (12), the connecting pipe (1501) is connected to the negative pressure device (15), and a connecting hose (1502) is connected between the connecting pipe (1501) and the plurality of conical suction cups (17).

4. The aging degree detection device of the acid-alkali resistant aluminum-plastic composite film according to claim 3 is characterized in that: The interiors of the plurality of conical suction cups (17) are each provided with an assembly hole (1701), and the end of the connecting hose (1502) is fixedly mounted inside the corresponding assembly hole (1701).

5. The aging degree detection device of the acid-alkali resistant aluminum-plastic composite film according to claim 1 is characterized in that: The ends of the plurality of conical suction cups (17) are all fixedly mounted with sealing rings (1702), the interiors of the plurality of conical suction cups (17) are all fixedly mounted with retaining rings (1703), and the bottom sealing plate (18) is fixedly connected to the retaining ring (1703).

6. The aging degree detection device of the acid-alkali resistant aluminum-plastic composite film according to claim 1 is characterized in that: A stop ring (1903) is fixedly mounted on the outer sides of the plurality of ventilation ends (19).

7. The aging degree detection device of the acid-alkali resistant aluminum-plastic composite film according to claim 1 is characterized in that: The partition assembly comprises an upper sealing frame (4) and a lower sealing frame (5), wherein the upper sealing frame (4) and the lower sealing frame (5) are both fixed inside the machine body (1), and sliding sealing plates (6) are slidably installed inside the upper sealing frame (4) and the lower sealing frame (5), and a driving cylinder (8) is fixed between the sliding sealing plate (6) and the inner wall of the machine body (1) for driving the sliding sealing plate (6) to slide up and down, and a plurality of sealing sheets (601) are fixed at the ends of the sliding sealing plate (6).

8. The aging degree detection device of the acid-alkali resistant aluminum-plastic composite film according to claim 7 is characterized in that: A connecting transverse plate (7) is fixed between two adjacent sliding sealing plates (6), and rectangular notches (501) are provided on both sides of the upper sealing frame (4) and the lower sealing frame (5), and the connecting transverse plate (7) is slidably connected to the rectangular notches (501).

9. The aging degree detection device of the acid-alkali resistant aluminum-plastic composite film according to claim 1 is characterized in that: Limiting frames (9) are fixed on both sides of the machine body (1), and bearings (1001) are slidably installed inside the limiting frames (9), spring bodies (1002) are fixed between the bearings (1001) and the inner walls of the limiting frames (9), and two corresponding bearings (1001) are rotatably connected to the inside of the rotating shafts (10), a pressure roller (1003) is sleeved on the outer side of the rotating shaft (10), a push roller (11) is provided on the outer side of the pressure roller (1003), and limiting rings (1101) are rotatably installed on both ends of the push roller (11), a connecting rod (1102) is fixed on the outer side of the limiting ring (1101), the connecting rod (1102) is rotatably connected to the corresponding limiting frames (9), and a supporting spring (1103) is fixed between the limiting frame (9) and the connecting rod (1102).

10. A method for detecting acid- and alkali-resistant aluminum-plastic composite films, based on the detection device according to any one of claims 1 to 9, characterized in that: The specific steps include: S1, firstly, the composite film body (3) is conveyed around the feeding roller (2) to the inside of the machine body (1), and during the detection, as the partition assembly is running, the cooling zone and the heating zone can be closed through the cooperation of the upper sealing frame (4), the lower sealing frame (5) and the sliding sealing plate (6), and the position of the composite film body (3) is fixed, and then the cooling and heating treatment of the position to be tested of the composite film body (3) are respectively realized; S2. By moving the detection plate frame (12) toward the composite film body (3), multiple ventilation ends (19) can be brought into contact with the composite film body (3), so that the ventilation ends (19) are compressed into the corresponding conical suction cups (17). At this time, the conical suction cups (17) and the composite film body (3) are in contact with each other. As the negative pressure device (15) operates, the adsorption process of the composite film body (3) is completed, and then the detection plate frame (12) is moved to the side away from the composite film body (3) for reset, thereby realizing the detection of the tensile strength and peeling resistance of the composite film body (3).

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