A device for detecting the degree of stretching in the production of degradable mulch film

Abstract

This invention discloses a tensile strength testing device for the production of biodegradable mulch film. The invention relates to the field of tensile strength testing technology and includes a base plate. A transverse tensile testing component for performing transverse tensile testing on the biodegradable mulch film is fixedly connected to the side wall of the base plate. A fixing component for auxiliary fixing of the biodegradable mulch film to facilitate tensile strength testing is also fixedly connected to the side wall of the base plate. This invention can accurately obtain the mulch film's bearing limit under horizontal tension by using the transverse tensile testing component; it can also simulate the pushing effect of crops on the mulch film during crop growth by using a simulation testing component, recreating the stress scenario of the mulch film being pushed up by crops in actual use, and achieving accurate testing of the mulch film's tensile strength under this scenario.

Description

Technical Field

[0001] This invention belongs to the field of tensile strength testing technology, and particularly relates to a tensile strength testing device for the production of degradable mulch films. Background Technology

[0002] In the field of biodegradable mulch film production, tensile strength is a core indicator for evaluating the quality and reliability of mulch film, and its testing accuracy is directly related to the stability of mulch film in field use.

[0003] Currently, existing devices for testing the tensile strength of biodegradable mulch films have significant shortcomings and cannot meet actual testing needs: First, their testing functions are limited. Most devices can only perform single lateral tensile testing, failing to simulate the stress scenario of mulch films being lifted by crops during actual field use. This leads to a disconnect between test results and practical applications, and the devices cannot fully reflect the actual tensile performance of the mulch films. Second, their testing accuracy is insufficient. Existing devices often lack precise intelligent sensing and acquisition structures. Even when equipped with sensors, there are problems such as unstable force transmission and susceptibility to impact damage. They cannot collect force data in real time and accurately during the testing process, resulting in large testing errors and making it difficult to provide reliable quality assessment data. Third, their adaptability and operability are poor. The position and angle adjustment of the testing components of existing devices are inconvenient, making them unsuitable for biodegradable mulch films of different thicknesses and toughnesses. Furthermore, the operation process is cumbersome, requiring complex debugging steps, making it difficult to meet the needs of large-scale, multi-specification batch testing of mulch films.

[0004] To address this issue, we propose a tensile strength testing device for the production of degradable mulch films. Summary of the Invention

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A tensile testing device for the production of degradable mulch film includes a base plate. A transverse tensile testing component for transverse tensile testing of the degradable mulch film is fixedly connected to the side wall of the base plate. A fixing component for auxiliary fixing of the degradable mulch film to facilitate tensile testing is also fixedly connected to the side wall of the base plate. A simulation testing component is provided on the top side wall of the base plate to simulate the tensile testing when the degradable mulch film is lifted by crops after it is put into use.

[0006] Preferably, the transverse tensile testing component includes two mounting plates symmetrically and fixedly connected to the side walls at both ends of the base plate. The inner walls of each mounting plate are fixedly connected to a first electric slide rail. The side walls of each first electric slide rail are slidably connected to a first sliding plate. The top side wall of each first sliding plate is fixedly connected to a first electric telescopic rod.

[0007] Preferably, a clamping plate is fixedly connected to the telescopic end of the first electric telescopic rod, a second electric telescopic rod is fixedly connected to the inner wall of the top of the clamping plate, a clamping plate is fixedly connected to the telescopic end of the second electric telescopic rod, two tension sensors are symmetrically fixedly connected to the side walls at both ends of the base plate, and a first spring is fixedly connected to the detection end of each tension sensor, and one end of each first spring is fixedly connected to the side wall of the corresponding first slide plate.

[0008] Preferably, the fixing assembly includes multiple bent rods fixedly connected to the side walls of both ends of the base plate, one end of each of the multiple bent rods being fixedly connected to the same support plate, the bottom side wall of the support plate having a first groove, the inner wall of the first groove being fixedly connected to a second electric slide rail, the bottom side wall of the second electric slide rail being slidably connected to multiple second slide plates, the bottom side wall of each of the second slide plates being fixedly connected to a third electric telescopic rod, and the telescopic end of each of the third electric telescopic rods being fixedly connected to an auxiliary pressure plate.

[0009] Preferably, the simulation detection component includes a plurality of second grooves formed on the top sidewall of the base plate, a fourth electric telescopic rod fixedly connected to the bottom inner wall of each of the second grooves, a fixing block fixedly connected to the telescopic end of each of the fourth electric telescopic rods, a plurality of third grooves formed on the top sidewall of the fixing block, and a fifth electric telescopic rod fixedly connected to the bottom inner wall of each of the third grooves.

[0010] Preferably, the telescopic end of the fifth electric telescopic rod is fixedly connected to a fixed cylinder, the bottom inner wall of the fixed cylinder is fixedly connected to a pressure sensor, the detection end of the pressure sensor is fixedly connected to a second spring, the upper end of the second spring is fixedly connected to a connecting plate, and two sliding grooves are symmetrically opened on the inner wall of the fixed cylinder.

[0011] Preferably, the inner wall of each groove is slidably connected to a slider, the side wall of each slider is fixedly connected to the side wall of the corresponding connecting plate, the top side wall of the connecting plate is fixedly connected to an installation rod, the rod wall of the installation rod is provided with a fourth groove, the inner wall of the fourth groove is fixedly connected to a third electric slide rail, and the side wall of the third electric slide rail is slidably connected to multiple third sliding plates.

[0012] Preferably, the sidewalls of the third slide plate are all fixedly connected to U-plates, the inner wall of the U-plates is rotatably connected to a round rod, the sidewalls of the U-plates are fixedly connected to a first motor, the output end of the first motor passes through the sidewalls of the U-plates and is fixedly connected to one end of the round rod, and the rod wall of the round rod is fixedly connected to a sixth electric telescopic rod.

[0013] Preferably, the telescopic end of the sixth electric telescopic rod is fixedly connected to a fixed plate, the side wall of the fixed plate is provided with a plurality of fifth grooves, the inner wall of one end of each fifth groove is provided with a sixth groove, the inner wall of each sixth groove is fixedly connected to a second motor, and the output end of each second motor is fixedly connected to a side rod.

[0014] Preferably, one end of the side rod is rotatably connected to the inner wall of the corresponding fifth groove, and a seventh electric telescopic rod is fixedly connected to the rod wall of the side rod. The telescopic ends of the seventh electric telescopic rod are all fixedly connected to detection protrusions.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention achieves dual tensile strength detection by coordinating a transverse tensile testing component, a fixing component, and a simulation testing component. The transverse tensile testing component accurately measures the transverse tensile strength of the degradable mulch film, determining its maximum withstand limit under horizontal tension. Simultaneously, the simulation testing component mimics the pushing action of crops on the mulch film during growth, recreating the stress scenario of crops lifting the film in actual use, thus accurately detecting the film's tensile strength under this scenario. The fixing component further assists in securing the mulch film during the testing process, ensuring a stable stress state for the film in both testing modes and preventing detection deviations caused by slippage or displacement. Compared to existing technologies, this invention offers a more comprehensive testing range and more realistic testing scenarios, providing more comprehensive and valuable testing data for assessing the quality of mulch film production. This invention relies on two intelligent detection components—a tension sensor and a pressure sensor—to achieve real-time and accurate data acquisition. During lateral tension detection, a first spring smoothly transmits the tension generated by the movement of the first sliding plate to the tension sensor, preventing damage from sudden changes in tension and ensuring stable data acquisition. This allows for accurate recording of the maximum tension value at the moment the mulch film breaks. During simulated jacking detection, a second spring smoothly transmits the reaction force received by the detection protrusion to the pressure sensor, buffering the impact force and accurately recording the maximum pressure value at the moment the mulch film is punctured. Analysis of these two types of data allows for accurate acquisition of the mulch film's tensile strength under different scenarios. The simulation testing component, through the cooperation of multiple sets of electric telescopic rods, motors, and slide rails, can flexibly adjust the position and angle of the testing protrusions. It can simulate the posture of crop branches at different growth stages and adapt to the testing needs of degradable mulch films of different thicknesses and toughnesses. The entire operation process of the device is seamless. The staff only needs to complete simple operations such as placing the mulch film and starting the components to complete the testing. There are no complicated debugging steps. Compared with existing technologies, it is more convenient to operate, more adaptable, and can effectively improve testing efficiency and reduce the operating difficulty for staff. It is suitable for large-scale batch testing of degradable mulch films of various specifications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention from other angles; Figure 3 This is a partial structural diagram of the present invention. Figure 1 ; Figure 4 This is a cross-sectional view of part of the structure of the present invention. Figure 1 ; Figure 5 This is a cross-sectional view of part of the structure of the present invention. Figure 2 ; Figure 6 This is a partial structural diagram of the present invention. Figure 2 ; Figure 7 This is a partial structural diagram of the present invention. Figure 3 .

[0017] In the diagram: 1. Base plate; 2. Lateral tensile testing assembly; 21. Mounting plate; 22. First electric slide rail; 23. First sliding plate; 24. First electric telescopic rod; 25. Clamping plate; 26. Second electric telescopic rod; 27. Clamping plate; 28. Tension sensor; 29. ​​First spring; 3. Fixing assembly; 31. Bend rod; 32. Support plate; 33. First groove; 34. Second electric slide rail; 35. Second sliding plate; 36. Third electric telescopic rod; 37. Auxiliary pressure plate; 4. Simulation testing assembly; 41. Second groove; 42. Fourth electric telescopic rod; 43. Fixing block; 44. 45. Third groove; 46. Fifth electric telescopic rod; 47. Fixed cylinder; 48. Pressure sensor; 49. Second spring; 40. Connecting plate; 410. Slide groove; 411. Slider; 412. Mounting rod; 413. Fourth groove; 414. Third electric slide rail; 415. Third sliding plate; 416. U-plate; 417. Round rod; 418. First motor; 419. Sixth electric telescopic rod; 420. Fixed plate; 421. Fifth groove; 422. Sixth groove; 423. Second motor; 424. Side rod; 425. Seventh electric telescopic rod; 426. Detection protrusion. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] The following electrical components are all electrically connected to the external PLC controller.

[0020] Reference Figure 1 - Figure 7A tensile testing device for the production of degradable mulch film includes a base plate 1, a transverse tensile testing component 2 for transverse tensile testing of the degradable mulch film is fixedly connected to the side wall of the base plate 1, a fixing component 3 for auxiliary fixing of the degradable mulch film to facilitate tensile testing, and a simulation testing component 4 for simulating the tensile test when the degradable mulch film is lifted by crops after being put into use.

[0021] In this embodiment, the transverse tensile testing component 2 includes two mounting plates 21 that are symmetrically and fixedly connected to the side walls at both ends of the base plate 1. The inner walls of the mounting plates 21 are fixedly connected to a first electric slide rail 22, the side walls of the first electric slide rail 22 are slidably connected to a first sliding plate 23, and the top side walls of the first sliding plate 23 are fixedly connected to a first electric telescopic rod 24. The telescopic end of the first electric telescopic rod 24 is fixedly connected to a clamping plate 25. The inner wall of the top of the clamping plate 25 is fixedly connected to a second electric telescopic rod 26. The telescopic end of the second electric telescopic rod 26 is fixedly connected to a clamping plate 27. Two tension sensors 28 are symmetrically fixedly connected to the side walls of both ends of the base plate 1. The detection end of each tension sensor 28 is fixedly connected to a first spring 29. One end of each first spring 29 is fixedly connected to the side wall of the corresponding first slide plate 23.

[0022] Specifically, mounting plate 21 is used to fix the first electric slide rail 22, providing a stable mounting base for the lateral tension detection component 2; the first electric slide rail 22 is used to drive the first slide plate 23 to slide along its side wall, realizing the horizontal movement of the first slide plate 23 and providing power for the lateral tension of the degradable mulch film; the first slide plate 23 is used to fix the first electric telescopic rod 24, driving the first electric telescopic rod 24 to move synchronously; the first electric telescopic rod 24 is used to drive the clamping plate 25 to rise and fall vertically, adjusting the height of the clamping plate 25 to facilitate the placement and clamping of the degradable mulch film by the staff; the clamping plate 25 is used to support both ends of the degradable mulch film to be tested, providing a clamping base for the clamping plate 27; the second electric telescopic rod 26 is used to drive the clamping plate 27 to move horizontally. 7. Movement: Through the cooperation of clamping plate 27 and clamping plate 25, the two ends of the degradable mulch film are firmly clamped to prevent slippage or displacement during stretching. Clamping plate 27 is used to directly contact the degradable mulch film and, together with clamping plate 25, clamps the mulch film to ensure uniform force on the mulch film during stretching. Tension sensor 28 is used to collect tension data in real time during the transverse stretching process of the degradable mulch film, providing data support for tensile strength detection. First spring 29 is used to smoothly transmit the tension generated by the movement of first sliding plate 23 to tension sensor 28, avoiding sudden changes in tension that could damage the sensor, while ensuring the accuracy of tension detection. One end of first spring 29 is fixed to the corresponding first sliding plate 23 and moves synchronously with the first sliding plate 23 to transmit the stretching force.

[0023] In this embodiment, the fixing component 3 includes a plurality of bent rods 31 fixedly connected to the side walls of both ends of the base plate 1. One end of the plurality of bent rods 31 is fixedly connected to the same support plate 32. The bottom side wall of the support plate 32 is provided with a first groove 33. The inner wall of the first groove 33 is fixedly connected to a second electric slide rail 34. The bottom side wall of the second electric slide rail 34 is slidably connected to a plurality of second slide plates 35. The bottom side wall of each of the second slide plates 35 is fixedly connected to a third electric telescopic rod 36. The telescopic end of each of the third electric telescopic rods 36 is fixedly connected to an auxiliary pressure plate 37.

[0024] Specifically, the bent rod 31 is used to fix and connect the base plate 1 and the support plate 32, providing stable support for the support plate 32 and ensuring the installation stability of the fixing assembly 3; the support plate 32 is used to form a first groove 33, providing an installation carrier for the second electric slide rail 34, and supporting subsequent components of the entire fixing assembly 3; the first groove 33 is used to accommodate the installation of the second electric slide rail 34, providing installation space for the second electric slide rail 34 and limiting its movement; the second electric slide rail 34 is used to drive the second slide plate 35 to slide along its bottom side wall, adjusting the horizontal position of the multiple auxiliary pressure plates 37, so that the auxiliary... The pressure plate 37 can be precisely moved to the designated position; the second sliding plate 35 is used to fix and install the third electric telescopic rod 36, driving the third electric telescopic rod 36 to move synchronously, thereby realizing the position adjustment of the auxiliary pressure plate 37; the third electric telescopic rod 36 is used to drive the auxiliary pressure plate 37 to rise and fall in the vertical direction, controlling the pressing and resetting of the auxiliary pressure plate 37; the auxiliary pressure plate 37 is used to apply pressure to the designated area of ​​the degradable mulch film, so that the degradable mulch film is tightly attached to the surface of the base plate 1 and the fixing block 43, providing a bonding base for the simulation test, and at the same time assisting in fixing the mulch film, so as to facilitate the smooth conduct of subsequent tensile strength testing.

[0025] In this embodiment, the simulation detection component 4 includes a plurality of second grooves 41 opened on the top sidewall of the base plate 1. The bottom inner wall of each second groove 41 is fixedly connected to a fourth electric telescopic rod 42. The telescopic end of each fourth electric telescopic rod 42 is fixedly connected to a fixing block 43. The top sidewall of the fixing block 43 is provided with a plurality of third grooves 44. The bottom inner wall of each third groove 44 is fixedly connected to a fifth electric telescopic rod 45. The telescopic end of the fifth electric telescopic rod 45 is fixedly connected to a fixed cylinder 46. The bottom inner wall of the fixed cylinder 46 is fixedly connected to a pressure sensor 47. The detection end of the pressure sensor 47 is fixedly connected to a second spring 48. The upper end of the second spring 48 is fixedly connected to a connecting plate 49. Two sliding grooves 410 are symmetrically opened on the inner wall of the fixed cylinder 46. The inner wall of the slide 410 is slidably connected with sliders 411, the side walls of sliders 411 are fixedly connected to the side walls of corresponding connecting plates 49, the top side wall of connecting plates 49 is fixedly connected with mounting rods 412, the rod wall of mounting rods 412 is provided with a fourth groove 413, the inner wall of the fourth groove 413 is fixedly connected with a third electric slide rail 414, and the side wall of the third electric slide rail 414 is slidably connected with multiple third slide plates 415. The sidewalls of the third slide plate 415 are all fixedly connected to U-plates 416. The inner wall of the U-plate 416 is rotatably connected to a round rod 417. The sidewalls of the U-plate 416 are fixedly connected to a first motor 418. The output end of the first motor 418 passes through the sidewall of the U-plate 416 and is fixedly connected to one end of the round rod 417. The rod wall of the round rod 417 is fixedly connected to a sixth electric telescopic rod 419. The telescopic end of the sixth electric telescopic rod 419 is fixedly connected to a fixed plate 420. The side wall of the fixed plate 420 is provided with multiple fifth grooves 421. The inner wall of one end of each fifth groove 421 is provided with a sixth groove 422. The inner wall of each sixth groove 422 is fixedly connected to a second motor 423. The output end of each second motor 423 is fixedly connected to a side rod 424. One end of the side rod 424 is rotatably connected to the inner wall of the corresponding fifth groove 421. The rod wall of the side rod 424 is fixedly connected to the seventh electric telescopic rod 425. The telescopic ends of the seventh electric telescopic rod 425 are all fixedly connected to the detection protrusions 426.

[0026] Specifically, the second groove 41 is used to accommodate and install the fourth electric telescopic rod 42, providing installation space and limiting the fourth electric telescopic rod 42, and also accommodating the fixing block 43 when the system is not activated; the fourth electric telescopic rod 42 is used to drive the fixing block 43 to move up and down vertically, realizing the extension and retraction of the fixing block 43, simulating the rising and falling state of crops protruding on the soil surface; the fixing block 43 is used to create the third groove 44, providing an installation carrier for the fifth electric telescopic rod 45, and simulating the basic shape of crops protruding on the soil surface; the third groove 44 is used to accommodate and install the fifth electric telescopic rod 45, providing installation space and limiting the fifth electric telescopic rod 45; the fifth electric telescopic rod 45 is used to drive the fixing cylinder 46 to move up and down vertically. The height of the fixing cylinder 46 and subsequent components is adjusted to adapt to different simulation testing needs. The fixing cylinder 46 is used to house components such as the pressure sensor 47, the second spring 48, and the connecting plate 49, providing them with a closed and stable installation environment while protecting the internal components. The pressure sensor 47 is used to collect pressure data in real time during the process of the detection protrusion 426 lifting the degrading mulch film, providing data support for tensile strength testing in simulated scenarios. The second spring 48 is used to smoothly transmit the reaction force received by the connecting plate 49 to the pressure sensor 47, avoiding sudden pressure changes that could damage the sensor, while also buffering the impact force when the detection protrusion 426 contacts the mulch film. The connecting plate 49 is used to fix and connect the second spring 48 and the mounting rod 412, transmitting... The mounting rod 412 and subsequent components are supported by pressure; the slide groove 410 provides a sliding track for the slider 411, limits the movement of the slider 411, and ensures that the connecting plate 49 can move smoothly in the vertical direction; the slider 411 connects the slide groove 410 and the connecting plate 49, moves synchronously with the connecting plate 49, and at the same time, through cooperation with the slide groove 410, ensures the stability of the movement of the connecting plate 49 and prevents it from deviating; the mounting rod 412 is used to open the fourth groove 413 to provide a mounting carrier for the third electric slide rail 414, and at the same time supports the third electric slide rail 414 and subsequent components; the fourth groove 413 is used to accommodate the installation of the third electric slide rail 414, providing installation space and limiting the third electric slide rail 414; the third electric... The movable slide rail 414 is used to drive the third slide plate 415 to slide along its side wall, adjust the horizontal position of the third slide plate 415 and subsequent components, and realize random adjustment of the horizontal position of the detection protrusion 426; the third slide plate 415 is used to fix the U plate 416, drive the U plate 416 and subsequent components to move synchronously, and adapt to the position adjustment requirements of the detection protrusion 426; the U plate 416 is used to provide rotational support for the round rod 417, and at the same time fix the first motor 418, providing a stable installation base for the first motor 418; the round rod 417 is used to fixally connect the sixth electric telescopic rod 419, rotates under the drive of the first motor 418, drives the sixth electric telescopic rod 419 and subsequent components to rotate, and adjusts the tilt angle of the detection protrusion 426;The first motor 418 provides power for the rotation of the round rod 417, driving the round rod 417 to rotate, thereby adjusting the angle of the detection protrusion 426; the sixth electric telescopic rod 419 drives the fixed plate 420 to rise and fall vertically, adjusting the height of the fixed plate 420 and subsequent components, thereby achieving random adjustment of the height of the detection protrusion 426; the fixed plate 420 is used to form the fifth groove 421 and the sixth groove 422, providing a mounting carrier for components such as the side rod 424 and the second motor 423; the fifth groove 421 is used to accommodate the side rod 424, providing rotation space and limiting the side rod 424; the sixth groove 422 is used to accommodate and install the second motor 423, providing installation space and limiting the second motor 423; the second motor 423 provides power for the rotation of the side rod 424, driving the side rod... The side rod 424 rotates, thereby adjusting the angle of the seventh electric telescopic rod 425 and the detection protrusion 426; the side rod 424 is used to fix the seventh electric telescopic rod 425, and rotates under the drive of the second motor 423 to adjust the tilt posture of the seventh electric telescopic rod 425 and the detection protrusion 426. At the same time, one end of it is rotatably connected to the inner wall of the fifth groove 421 to ensure the stability of the rotation; the seventh electric telescopic rod 425 is used to drive the detection protrusion 426 to extend and retract in the horizontal direction, adjusting the horizontal position of the detection protrusion 426, and realizing the random adjustment of the position of the detection protrusion 426; the detection protrusion 426 is used to directly contact the degradable mulch film, applying lifting pressure to the degradable mulch film in the simulation test, simulating the state of crop branches lifting the mulch film, thereby realizing the detection of the tensile strength of the degradable mulch film under the simulated use scenario.

[0027] The operating principle of the present invention is now described as follows: In this invention, when it is necessary to test the tensile strength of the degradable mulch film, the first electric telescopic rod 24 is activated, driving the clamping plate 25 to move vertically upwards, so that the clamping plate 25 is precisely positioned at a suitable height above the base plate 1, ensuring the convenience of subsequent mulch film clamping operations. Then, the operator cuts the degradable mulch film to be tested into a size slightly larger than the upper surface area of ​​the base plate 1, ensuring that the mulch film can completely cover the base plate 1 and the working area of ​​the subsequent simulated testing component 4. Then, both ends of the degradable mulch film are respectively placed into the clamping plates 25 on both sides, ensuring that the force on both ends of the mulch film is uniform. After the mulch film is placed in place, the second electric telescopic rod 26 is activated, which drives the corresponding clamping plate 27 to move horizontally to one side of the mulch film. The clamping plate 27 and the clamping plate 25 are used to firmly clamp the two sides of the degradable mulch film to prevent the mulch film from slipping or shifting during the stretching process, thus ensuring the accuracy of the test data. After clamping is completed, the first electric slide rail 22 is activated, which drives the first sliding plate 23 to move along the inner wall of the mounting plate 21 away from the center of the base plate 1. This makes the two first sliding plates 23 move symmetrically in opposite directions. Then, through the clamping plate 25 and the clamping plate 27, the two sides of the degradable mulch film are stretched outward synchronously to realize the detection of the lateral stretching of the degradable mulch film. During this lateral stretching process, as the first slide plate 23 moves, it will generate a continuous tension on the first spring 29. The first spring 29 smoothly transmits this tension to the tension sensor 28. The tension sensor 28 collects the tension data in real time during the stretching process to achieve accurate monitoring of the tension force. When the degradable mulch film breaks due to the tension reaching its limit, the detection value of the tension sensor 28 will drop sharply. The maximum tension value at the moment of breakage is recorded simultaneously. By analyzing this value, the lateral stretching index of the degradable mulch film can be accurately obtained, and the lateral stretching test process can be completed. After completing the lateral tensile test, the second electric telescopic rod 26 is reset, which causes the clamping plate 27 to loosen the degradable mulch film. The staff takes out the tested mulch film and then, following the above clamping steps, fixes the new degradable mulch film to be tested again through the clamping plate 27, in preparation for the tensile test in actual use scenario (simulating the tensile state when crops are lifted). After the simulation test is initiated, the fourth electric telescopic rod 42 is activated, causing the fixing block 43 to move upward from the second groove 41. Multiple fixing blocks 43 work together to simulate the raised shape of crops planted on the soil surface, providing a simulated carrier for the mulch film to adhere. Subsequently, the first electric telescopic rod 24 is retracted, causing the degradable mulch film fixed by the clamping plate 27 to move downward, ensuring that the lower surface of the mulch film makes precise contact with the upper surface of the fixing block 43, ensuring a tight fit. After the mulch film comes into contact with the fixing block 43, the second electric slide rail 34 is activated, which drives multiple second slide plates 35 to slide along the inner wall of the first groove 33 of the support plate 32, so that multiple auxiliary pressure plates 37 are precisely moved to the gap position between adjacent fixing blocks 43, avoiding positional interference between the auxiliary pressure plates 37 and the fixing blocks 43. Then, the third electric telescopic rod 36 is activated, which drives the auxiliary pressure plates 37 to move downward in the vertical direction, applying uniform pressure to the gap area of ​​the degradable mulch film, so that the lower surface of the degradable mulch film is tightly attached to the upper surface of the base plate 1. During this bonding process, the first electric slide rail 22 is synchronously controlled to drive the first slide plate 23 to move towards the center of the base plate 1, so that the two sides of the degradable mulch film slowly contract inward, ensuring that the lower surface of the mulch film can be smoothly and fully bonded to the surface of the base plate 1. This effectively avoids the mulch film being subjected to additional tension on both sides during the bonding process, preventing the tension from affecting the tensile strength detection value when the simulated crop is lifted, and ensuring the authenticity and accuracy of the simulation test. Once the degradable mulch film is fully adhered to the upper surface of the base plate 1 and the upper surface of the fixing block 43, the contact state between the degradable mulch film and the soil surface during actual field use is accurately simulated. At this time, the detection process simulating the lifting of crop branches is initiated, and multiple third electric slide rails 414 are controlled to start synchronously, driving the corresponding third slide plate 415 to slide randomly along the inner wall of the fourth groove 413 of the mounting rod 412. At the same time, multiple first motors 418 are controlled to start, driving the round rod 417 to rotate around the inner wall of the U plate 416. The angle at which each first motor 418 drives the round rod 417 to rotate is randomly set, thereby driving the sixth electric telescopic rod 419 to rotate synchronously. Subsequently, multiple sixth electric telescopic rods 419 are activated, driving the corresponding fixed plates 420 to move vertically. The distance each sixth electric telescopic rod 419 moves the fixed plate 420 is random. Then, the second motor 423 is activated, driving the side rod 424 to rotate around the inner wall of the fifth groove 421. The rotation angle of the side rod 424 is adjusted by random parameters, thereby driving the seventh electric telescopic rod 425 to rotate synchronously with the detection protrusion 426. Finally, the seventh electric telescopic rod 425 is activated, driving the detection protrusion 426 to move horizontally. The moving distance is also randomly set. Through the coordinated random actions of the above-mentioned multiple components, the spatial position and tilt angle of the multiple detection protrusions 426 above each mounting rod 412 are randomly distributed, accurately simulating the natural posture of branches during crop growth, ensuring that the simulated detection is highly consistent with the actual use scenario. After the simulated posture adjustment is completed, the fourth electric telescopic rod 42 is controlled to continue to move upward, driving the fixed block 43 and the multiple detection protrusions 426 above it to move upward synchronously, so that the detection protrusions 426 apply continuous lifting pressure to the degradable mulch film. During this process, the detection protrusions 426 are subjected to the reaction force of the mulch film. This force is transmitted to the second spring 48 through the connecting plate 49, so that the second spring 48 is gradually compressed. At the same time, the pressure sensor 47 in the fixed cylinder 46 collects the pressure data of the second spring 48 in real time during the compression process. As the fourth electric telescopic rod 42 drives the detection protrusion 426 to move upward continuously, the lifting pressure of the detection protrusion 426 on the degradable mulch film continues to increase. When the pressure reaches the mulch film's limit, and the mulch film is punctured by the detection protrusion 426, the detection value of the pressure sensor 47 at the corresponding position will drop sharply. The maximum pressure value at the moment the mulch film is punctured is recorded simultaneously. By comprehensively analyzing the limit pressure values ​​collected by the pressure sensor 47 below each detection protrusion 426, the tensile strength index of the degradable mulch film when it is punctured by crop growth in actual use can be accurately detected.

[0028] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A tensile strength testing device for the production of degradable mulch film, comprising a base plate (1), characterized in that, The side wall of the base plate (1) is fixedly connected to a transverse tensile testing component (2) for transverse tensile testing of the degradable mulch film. The side wall of the base plate (1) is fixedly connected to a fixing component (3) for auxiliary fixing of the degradable mulch film to facilitate tensile testing. The top side wall of the base plate (1) is provided with a simulation testing component (4) for simulating the tensile test when the degradable mulch film is lifted by crops after it is put into use.

2. The tensile strength testing device for degradable mulch film production according to claim 1, characterized in that, The transverse tensile testing component (2) includes two mounting plates (21) that are symmetrically fixedly connected to the side walls of the two ends of the base plate (1). The inner walls of the mounting plates (21) are fixedly connected to a first electric slide rail (22). The side walls of the first electric slide rail (22) are slidably connected to a first sliding plate (23). The top side walls of the first sliding plate (23) are fixedly connected to a first electric telescopic rod (24).

3. The tensile strength testing device for degradable mulch film production according to claim 2, characterized in that, The telescopic end of the first electric telescopic rod (24) is fixedly connected to a clamping plate (25). The inner wall of the top of the clamping plate (25) is fixedly connected to a second electric telescopic rod (26). The telescopic end of the second electric telescopic rod (26) is fixedly connected to a clamping plate (27). Two tension sensors (28) are symmetrically fixedly connected to the side walls of both ends of the base plate (1). The detection end of each tension sensor (28) is fixedly connected to a first spring (29). One end of each first spring (29) is fixedly connected to the side wall of the corresponding first sliding plate (23).

4. The tensile strength testing device for degradable mulch film production according to claim 1, characterized in that, The fixing component (3) includes multiple bent rods (31) fixedly connected to the side walls of both ends of the base plate (1). One end of each of the multiple bent rods (31) is fixedly connected to the same support plate (32). The bottom side wall of the support plate (32) is provided with a first groove (33). The inner wall of the first groove (33) is fixedly connected to a second electric slide rail (34). The bottom side wall of the second electric slide rail (34) is slidably connected to multiple second slide plates (35). The bottom side wall of each of the second slide plates (35) is fixedly connected to a third electric telescopic rod (36). The telescopic end of each of the third electric telescopic rods (36) is fixedly connected to an auxiliary pressure plate (37).

5. The tensile strength testing device for degradable mulch film production according to claim 1, characterized in that, The simulation detection component (4) includes multiple second grooves (41) opened on the top side wall of the base plate (1). The bottom inner wall of each of the second grooves (41) is fixedly connected to a fourth electric telescopic rod (42). The telescopic end of each of the fourth electric telescopic rods (42) is fixedly connected to a fixing block (43). The top side wall of the fixing block (43) is provided with multiple third grooves (44). The bottom inner wall of each of the third grooves (44) is fixedly connected to a fifth electric telescopic rod (45).

6. The tensile strength testing device for degradable mulch film production according to claim 5, characterized in that, The telescopic end of the fifth electric telescopic rod (45) is fixedly connected to a fixed cylinder (46), and a pressure sensor (47) is fixedly connected to the inner wall of the bottom end of the fixed cylinder (46). The detection end of the pressure sensor (47) is fixedly connected to a second spring (48), and a connecting plate (49) is fixedly connected to the upper end of the second spring (48). Two sliding grooves (410) are symmetrically opened on the inner wall of the fixed cylinder (46).

7. The tensile strength testing device for degradable mulch film production according to claim 6, characterized in that, The inner wall of each slide groove (410) is slidably connected to a slider (411), the side wall of each slider (411) is fixedly connected to the side wall of the corresponding connecting plate (49), the top side wall of the connecting plate (49) is fixedly connected to an installation rod (412), the rod wall of the installation rod (412) is provided with a fourth groove (413), the inner wall of the fourth groove (413) is fixedly connected to a third electric slide rail (414), and the side wall of the third electric slide rail (414) is slidably connected to multiple third slide plates (415).

8. The tensile strength testing device for degradable mulch film production according to claim 7, characterized in that, The sidewalls of the third slide plate (415) are all fixedly connected to U-plates (416). The inner wall of the U-plate (416) is rotatably connected to a round rod (417). The sidewalls of the U-plate (416) are fixedly connected to a first motor (418). The output end of the first motor (418) passes through the sidewall of the U-plate (416) and is fixedly connected to one end of the round rod (417). The rod wall of the round rod (417) is fixedly connected to a sixth electric telescopic rod (419).

9. The tensile strength testing device for degradable mulch film production according to claim 8, characterized in that, The telescopic end of the sixth electric telescopic rod (419) is fixedly connected to a fixed plate (420). The side wall of the fixed plate (420) is provided with a plurality of fifth grooves (421). The inner wall of one end of each fifth groove (421) is provided with a sixth groove (422). The inner wall of each sixth groove (422) is fixedly connected to a second motor (423). The output end of each second motor (423) is fixedly connected to a side rod (424).

10. The tensile strength testing device for degradable mulch film production according to claim 9, characterized in that, One end of the side rod (424) is rotatably connected to the inner wall of the corresponding fifth groove (421). The rod wall of the side rod (424) is fixedly connected to a seventh electric telescopic rod (425). The telescopic ends of the seventh electric telescopic rod (425) are all fixedly connected to detection protrusions (426).

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