A device for testing the tensile strength of a composite film

Abstract

The present application relates to a kind of composite film tensile capacity detection device, two take-out assemblies are provided on the box, one of the take-out assemblies is used to wind composite film, the other take-out assembly is used to release composite film, two take-out assemblies are synchronously worked by program control, so as to ensure that the composite film between the two can always keep tension state;Take-out assembly includes take-up reel, and part of composite film is wound on the take-up reel, sampling assembly is arranged between two take-out assemblies, sampling assembly includes force plate and backing plate arranged on the two sides of composite film, cutting knife is fixedly installed on the force plate, No. 1 pusher assembly is arranged on the side of force plate, No. 2 pusher assembly is arranged on the side of backing plate, after the working of No. 1 pusher assembly and No. 2 pusher assembly, cutting knife and backing plate are extruded to realize quantitative cutting sampling of composite film after force plate and backing plate are close to each other, so as to realize the automatic preparation of sample, greatly reduce the workload of detection personnel.

Description

Technical Field

[0001] This invention relates to the field of new material testing, specifically to a device for testing the tensile strength of composite films. Background Technology

[0002] Film packaging uses flexible films made of plastics, paper, aluminum foil, and biodegradable materials as the base material. It is manufactured through processes such as heat sealing, lamination, and coating. It has advantages such as lightweight, transparency, barrier properties, customizability, and low cost, and is widely used in six major fields: food, daily chemicals, pharmaceuticals, electronics, industry, and agriculture.

[0003] With the development of technology and the increasing demands of applications, the market demand for various new composite film materials is growing, prompting companies to conduct research and development on related new materials.

[0004] In the research and development of new composite thin film materials, product testing, especially tensile strength testing, is a crucial step. Traditional universal thin film tension testing equipment can only test a single thin film sample, but the results from a single sample are often inaccurate and may even contain significant errors due to wrinkles on the film surface. Performing large-scale testing is also very cumbersome, requiring users to operate each sample individually. Summary of the Invention

[0005] The purpose of this invention is to provide a device for testing the tensile strength of composite films to solve the above-mentioned problems.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a composite film tensile strength testing device, comprising a housing, two side arms fixedly installed on the housing, a cover fixedly fixed at the top of the side arms, an electric lifting platform provided between the two side arms, and an electric clamp fixedly installed at the bottom of the electric lifting platform;

[0007] Two take-up and release components are provided on the housing. One of the take-up and release components is used to take up the composite film, and the other take-up and release component is used to release the composite film. The two take-up and release components are controlled by a program to work synchronously.

[0008] The take-up and release assembly includes take-up and release cylinders, each with a portion of a composite film wound around it. A sampling assembly is disposed between two take-up and release assemblies. The sampling assembly includes a force plate and a pad disposed on both sides of the composite film. A cutting blade is fixedly mounted on the force plate, and a [missing information - likely a device or tool] is disposed on one side of the force plate.

[0009] A first propulsion component and a second propulsion component are provided on one side of the pad. After the first and second propulsion components are working, the force plate and the pad are brought closer to each other, and the cutting blade and the pad are squeezed together to achieve quantitative cutting and sampling of the composite film.

[0010] Two spring seats are fixed on the force application plate, and a sliding rod is slidably arranged through the spring seats. A baffle is fixed to one end of the sliding rod, and a spring is arranged between the baffle and the spring seat. A clamping head is fixed to the other end of the two sliding rods. After the first and second propulsion components work, the force application plate and the pad are controlled to move closer to each other, and the clamping head cooperates with the pad to clamp the sample of the composite film.

[0011] Preferably, at least two uprights are fixed on the housing, the uprights being used to hold the composite film in place, ensuring that the portion of the composite film between the force-applying plate and the pad remains in the same position.

[0012] Preferably, a control terminal is integrated inside the housing, and a control box is installed on it.

[0013] Preferably, the take-up and take-down assembly further includes a rotating shaft rotatably mounted on the housing, a fixed pin on the rotating shaft, a sleeve inserted into the pin, the sleeve being fixed to the take-up and take-down tube, and the pin and the sleeve being detachably connected.

[0014] Preferably, a first bevel gear is fixedly installed on the rotating shaft, a motor is fixedly installed on the housing, a second bevel gear is fixed on the motor shaft of the motor, and the second bevel gear meshes with the first bevel gear.

[0015] Preferably, the first propulsion assembly includes a first base plate fixed on the box body, a first telescopic controller fixed on the first base plate, and the force application plate fixed to one end of the telescopic rod controlled by the first telescopic controller.

[0016] Preferably, the second propulsion assembly includes a second base plate fixed on the housing, a second telescopic control is fixed on the second base plate, and one end of the telescopic rod of the second telescopic control is fixed with the pad.

[0017] Preferably, the shape of the cut composite film sample is changed by adjusting the shape of the cutting blade.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. The housing of the present invention is provided with two take-up and release components, one of which is used to take up the composite film and the other is used to release the composite film. The two take-up and release components are controlled by a program to work synchronously, thereby ensuring that the composite film between the two can always be kept in a taut state.

[0020] The take-up and release assembly includes take-up and release tubes, each with a portion of a composite film wound on it. There are two take-up and release assemblies.

[0021] A sampling assembly is installed between the composite film and the sampler. The sampling assembly includes a force plate and a pad on both sides of the composite film. A cutting blade is fixedly installed on the force plate. A first propulsion assembly is set on one side of the force plate and a second propulsion assembly is set on the side of the pad. After the first and second propulsion assemblies are working, they control the force plate and the pad to move closer to each other. The cutting blade and the pad squeeze each other to achieve quantitative cutting and sampling of the composite film, thereby realizing automatic sample preparation and greatly reducing the workload of the testing personnel.

[0022] 2. One take-up and untake-down cylinder takes up a certain amount of composite film, while the other take-up and untake-down cylinder releases an equal amount of composite film, thereby realizing the automatic replacement of the composite film between the pad and the force plate, and thus realizing continuous batch testing of composite film, which is very convenient and ensures the reliability of the test results. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a first appearance schematic diagram of an embodiment of this application;

[0025] Figure 2 This is a second appearance schematic diagram of an embodiment of this application;

[0026] Figure 3 This is a third appearance diagram of an embodiment of this application;

[0027] Figure 4 yes Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a cross-sectional view of an embodiment of this application;

[0029] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0030] Figure 7 is a schematic diagram of the structure at the junction of the take-up and release tubes and the first bevel gear.

[0031] In the diagram: 11. Box body; 12. Side arm; 13. Cover; 14. Electric lifting platform; 15. Electric clamp; 16. Control box; 17. First bevel gear; 18. Retracting and extending cylinder; 19. Composite film; 20. Column; 21. First base plate; 22. First telescopic controller; 23. Force plate; 24. Second base plate; 25. Second telescopic controller; 26. Pad; 27. Motor; 28. Second bevel gear; 29. ​​Cutting blade; 30. Spring seat; 31. Clamping head; 32. Slide rod; 33. Spring; 34. Baffle; 35. Rotating shaft; 37. Sleeve; 40. Retracting and extending assembly. Detailed Implementation

[0032] Example 1:

[0033] Referring to Figure 1- Figure 7 The composite film tensile strength testing device includes a housing 11, two side arms 12 fixedly installed on the housing 11, a cover 13 fixedly installed on the top of the side arms 12, an electric lifting platform 14 between the two side arms 12, and an electric clamp 15 fixedly installed at the bottom of the electric lifting platform 14. The electric clamp 15 is used to clamp the upper end of the composite film 19.

[0034] It should be noted that a lifting power mechanism is provided in the two side arms 12 to control the lifting of the electric lifting platform 14. The lifting type can be a screw type, chain type, or other industry-standard designs.

[0035] Two take-up and release components 40 are provided on the housing 11. One of the take-up and release components 40 is used to take up the composite film 19, and the other take-up and release component 40 is used to release the composite film 19. The two take-up and release components 40 are controlled by the program to work synchronously, thereby ensuring that the composite film 19 between the two can always be kept taut.

[0036] The take-up and release assembly 40 includes a take-up and release cylinder 18, on which a portion of the composite film 19 is wound. A sampling assembly 50 is arranged between the two take-up and release assemblies 40. The sampling assembly 50 includes a force-applying plate 23 and a pad 26 arranged on both sides of the composite film 19. A cutting blade 29 is fixedly installed on the force-applying plate 23. A first-stage propulsion assembly is arranged on one side of the force-applying plate 23, and a second-stage propulsion assembly is arranged on one side of the pad 26. After the first-stage propulsion assembly and the second-stage propulsion assembly work, they control the force-applying plate 23 and the pad 26 to move closer to each other. The cutting blade 29 and the pad 26 squeeze each other to achieve quantitative cutting and sampling of the composite film 19, thereby realizing automatic sample preparation and greatly reducing the workload of the testing personnel.

[0037] In particular, the shape of the sample can be adjusted, specifically by adjusting the shape of the cutting blade 29. The technology of the cutting blade 29 can refer to the blades of existing square quantitative samplers and disc quantitative samplers.

[0038] It should be noted that two spring seats 30 are fixed on the force-applying plate 23, and a sliding rod 32 is slidably arranged through the spring seats 30. A baffle 34 is fixed to one end of the sliding rod 32, and a spring 33 is arranged between the baffle 34 and the spring seat 30. A clamping head 31 is fixed to the other end of the two sliding rods 32. After the first propulsion component and the second propulsion component work, the force-applying plate 23 and the pad 26 are controlled to move closer to each other. The clamping head 31 and the pad 26 cooperate to clamp the sample of the composite film 19, and the spring 33 is stretched.

[0039] At least two uprights 20 are fixed on the housing 11. The uprights 20 are used to hold the composite film 19 in place, ensuring that the portion of the composite film 19 between the force-applying plate 23 and the pad 26 is always in the same position.

[0040] In addition, a control terminal is integrated inside the housing 11, and a control box 16 is provided to control the operation of each electrical component.

[0041] Example 2:

[0042] The difference between this embodiment and Embodiment 1 is that the take-up and put-down assembly 40 further includes a rotating shaft 35 rotatably mounted on the housing 11. A fixed pin 36 is mounted on the rotating shaft 35, and a sleeve 37 is inserted into the pin 36. The sleeve 37 is fixed to the take-up and put-down tube 18. (See reference...) Figure 7 The pin 36 and the sleeve 37 are detachably connected to facilitate the replacement of the composite film 19;

[0043] A first bevel gear 17 is fixedly mounted on the rotating shaft 35, and a motor 27 is fixedly mounted on the housing 11. A second bevel gear 28 is fixed on the motor shaft of the motor 27. The second bevel gear 28 meshes with the first bevel gear 17. After the motor 27 starts, it drives the second bevel gear 28 to rotate. The meshing of the second bevel gear 28 with the first bevel gear 17 drives the first bevel gear 17 to rotate, thereby driving the rotating shaft 35 to rotate. The rotating shaft 35 drives the take-up and take-up cylinder 18 to rotate, thereby realizing the release and take-up of the composite film 19.

[0044] The first propulsion assembly includes a first base plate 21 fixed on the housing 11, a first telescopic controller 22 fixed on the first base plate 21, and a force-applying plate 23 fixed to one end of the telescopic rod controlled by the first telescopic controller 22.

[0045] The second propulsion assembly includes a second base plate 24 fixed on the housing 11, a second telescopic control 25 fixed on the second base plate 24, and a pad 26 fixed to one end of the telescopic rod controlled by the second telescopic control 25.

[0046] How to use:

[0047] Tensile strength tests were conducted on a large number of samples of the composite film 19. The test was initiated by the control box 16. After initiation, the control terminal controlled the electric lifting platform 14 to descend, which in turn caused the electric clamp 15 to descend and clamp the upper end of the composite film 19. Then, the control terminal activated the second telescopic control 25 and the first telescopic controller 22. After activation, the force plate 23 and the pad 26 moved closer to each other. The clamping head 31 and the pad 26 cooperated to clamp the sample of the composite film 19. The spring 33 was stretched, and then the cutting blade 29 and the pad 26 squeezed each other to achieve quantitative cutting and sampling of the composite film 19.

[0048] After completion, the control terminal controls the electric lifting platform 14 to rise until the sample is broken.

[0049] The control terminal controls the electric clamp 15 to release the upper end of the sample, and the control terminal controls the second telescopic control 25 and the first telescopic controller 22 to start, so that the force plate 23 and the pad 26 move away from each other and reset, and the lower end of the sample will also automatically fall onto the box 11.

[0050] Then the control terminal controls the two motors 27 to start. After the motors 27 start, they drive the second bevel gear 28 to rotate. The meshing of the second bevel gear 28 with the first bevel gear 17 drives the first bevel gear 17 to rotate, thereby driving the rotating shaft 35 to rotate. The rotating shaft 35 drives the take-up and release drum 18 to rotate.

[0051] One of the take-up and release cylinders 18 takes up a certain amount of the composite film 19, and the other take-up and release cylinder 18 releases an equal amount of the composite film 19, thereby realizing the replacement of the composite film 19 of the pad 26 and the force application plate 23;

[0052] Repeating the above operations allows for the automatic and continuous testing of the tensile strength of the composite film 19 sample, which is very convenient.

[0053] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand and implement the present invention. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A composite film tensile strength testing device, comprising a housing (11), two side arms (12) fixedly mounted on the housing (11), a cover (13) fixedly mounted on the top of the side arms (12), an electric lifting platform (14) disposed between the two side arms (12), and an electric clamp (15) fixedly mounted on the bottom of the electric lifting platform (14), characterized in that: Two take-up and release components (40) are set on the housing (11). One take-up and release component (40) is used to take up the composite film (19), and the other take-up and release component (40) is used to release the composite film (19). The two take-up and release components (40) work synchronously under program control. The take-up and release assembly (40) includes a take-up and release cylinder (18), on which a portion of the composite film (19) is wound. A sampling assembly (50) is set between the two take-up and release assemblies (40). The sampling assembly (50) includes a force plate (23) and a pad (26) set on both sides of the composite film (19). A cutting blade (29) is fixedly installed on the force plate (23). A first propulsion assembly is set on one side of the force plate (23), and a second propulsion assembly is set on one side of the pad (26). After the first propulsion assembly and the second propulsion assembly work, they control the force plate (23) and the pad (26) to move closer to each other. The cutting blade (29) and the pad (26) squeeze each other to achieve quantitative cutting and sampling of the composite film (19). Two spring seats (30) are fixed on the force plate (23). A sliding rod (32) is slidably arranged through the spring seat (30). A baffle (34) is fixed at one end of the sliding rod (32). A spring (33) is arranged between the baffle (34) and the spring seat (30). A clamping head (31) is fixed at the other end of the two sliding rods (32). After the first and second propulsion components work, the force plate (23) and the pad (26) are controlled to move closer to each other. The clamping head (31) and the pad (26) cooperate to clamp the sample of the composite film (19).

2. The composite film tensile strength testing device according to claim 1, characterized in that: At least two uprights (20) are fixed on the housing (11). The uprights (20) are used to hold the composite film (19) in place, ensuring that the portion of the composite film (19) between the force plate (23) and the pad (26) is always in the same position.

3. The composite film tensile strength testing device according to claim 1, characterized in that: A control terminal is integrated inside the housing (11), and a control box (16) is installed on the housing (11).

4. The composite film tensile strength testing device according to claim 2, characterized in that: The take-up and take-down assembly (40) also includes a rotating shaft (35) rotatably mounted on the housing (11), a fixed pin (36) on the rotating shaft (35), a sleeve (37) inserted into the pin (36), the sleeve (37) being fixed to the take-up and take-down tube (18), and the pin (36) and the sleeve (37) being detachably connected.

5. The composite film tensile strength testing device according to claim 4, characterized in that: A first bevel gear (17) is fixedly installed on the rotating shaft (35), and a motor (27) is fixedly installed on the housing (11). A second bevel gear (28) is fixed on the motor shaft of the motor (27), and the second bevel gear (28) meshes with the first bevel gear (17).

6. The composite film tensile strength testing device according to claim 5, characterized in that: The first propulsion assembly includes a first base plate (21) fixed on the housing (11), a first telescopic controller (22) fixed on the first base plate (21), and a force-applying plate (23) fixed to one end of the telescopic rod controlled by the first telescopic controller (22).

7. The composite film tensile strength testing device according to claim 6, characterized in that: The second propulsion assembly includes a second base plate (24) fixed on the housing (11), a second telescopic control (25) fixed on the second base plate (24), and a pad plate (26) fixed at one end of the telescopic rod controlled by the second telescopic control (25).

8. The composite film tensile strength testing device according to claim 7, characterized in that: The shape of the cut composite film (19) sample can be changed by adjusting the shape of the cutting blade (29).

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