A woven degradable mesh production detection device
By integrating the functions of overall linear strength and local single-point strength detection, the device solves the problem that existing equipment cannot accurately detect the local point strength of woven biodegradable nets, realizing full-area mechanical testing and improving detection efficiency and result accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGZHOU SENMAI NET CO LTD
- Filing Date
- 2026-06-15
- Publication Date
- 2026-07-14
AI Technical Summary
Existing testing equipment cannot accurately perform local point strength tests on woven biodegradable nets. Overall strength testing and single-point strength testing need to be performed separately. Furthermore, during single-point testing, the net surface is prone to loosening and wrinkling, which affects the accuracy and stability of the test results.
A device integrating overall linear strength and local single-point strength detection functions was designed. By combining pressure rods and combined pressure blocks, multi-point detection of woven biodegradable nets is achieved. Tension adjustment mechanism and traction positioning mechanism are used to ensure uniform force on the net surface and avoid slack and wrinkles.
It enables full-area mechanical testing of woven biodegradable nets, improving testing efficiency and data accuracy, reducing equipment investment costs, and ensuring the stability and reliability of test results.
Smart Images
Figure CN122385341A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of testing technology for woven biodegradable web production materials, specifically a testing device for woven biodegradable web production. Background Technology
[0002] Woven biodegradable netting is a new material made from biodegradable polymers such as polylactic acid (PLA), polycaprolactone (PCL), and starch-based modified materials. It is an important research and industrialization direction in the field of green and ecological materials. Through the controllable degradation characteristics of polymer chains, it can gradually decompose into harmless substances in the natural environment, avoiding the long-term environmental pollution problems caused by traditional plastic netting. In the industrial production process, the strength and mechanical properties of the netting need to be tested by special testing equipment to ensure product quality and reliability.
[0003] For example, patent CN223154695U discloses a strength testing device for polyester mesh production. It includes a fixed base plate with grooves communicating with both sides of the base plate, and a strength testing component. The component includes a dual-axis hydraulic cylinder fixedly connected to the bottom of the fixed base plate. A first hydraulic pressure sensor is mounted on the dual-axis hydraulic cylinder, and second fixed plates are fixedly connected to the front and rear output ends of the cylinder. Two multi-segment hydraulic telescopic rods are connected to a pressing roller, which contacts the polyester mesh, causing the center of the mesh to move downwards, thus detecting the tension of the polyester mesh. This allows the strength testing device to detect the tension and tensile force of the polyester mesh without constantly switching testing equipment, improving the practicality of the strength testing device.
[0004] For example, patent CN223711242U discloses a tensile strength testing device for gabion mesh production. It describes a method of fixing gabion mesh inside two sets of mounting plates, each with a mounting bracket on top, by symmetrically installing two sets of mounting plates on a testing platform. The two sets of mounting plates are driven by a motor to rotate, causing the two sets of mounting plates to move away from each other, thus stretching the gabion mesh. The pressure is transmitted to the pressure testing device through a spring installed on the side of the second slider at the bottom of the mounting plate, which can then determine the tensile force on the gabion mesh. Compared to manual stretching, the gabion mesh does not wobble during stretching, making the test results more accurate.
[0005] However, some existing testing equipment can only perform overall linear strength testing of the net body, and cannot perform precise single-point strength testing on local points of the net body. It is difficult to comprehensively assess the weak points of the net body. Overall strength testing and single-point strength testing need to be completed by two separate devices. Moreover, when performing single-point testing, the net body, which is only tensioned by the traction structure at both ends, is prone to slack and wrinkling in the area of the net surface perpendicular to the length direction. This leads to uneven stress on the net surface during the testing process, affecting the accuracy and stability of the single-point strength test results.
[0006] To address the aforementioned issues, there is an urgent need for innovative designs based on the existing woven biodegradable net production and testing equipment. Summary of the Invention
[0007] The purpose of this invention is to provide a testing device for the production of woven biodegradable nets, in order to solve the problems mentioned in the background art. Some existing testing devices can only realize the overall linear strength test of the net body, and cannot perform accurate single-point strength tests on local points of the net body. It is difficult to comprehensively evaluate the weak points of the net body. The overall strength test and the single-point strength test need to be completed by two separate devices. Moreover, when performing single-point tests, the net body, which is only tensioned by the traction structure at both ends, is prone to slack and wrinkling in the area of the net surface perpendicular to the length direction. This leads to uneven stress on the net surface during the test, affecting the accuracy and stability of the single-point strength test results.
[0008] To achieve the above objectives, the present invention provides the following technical solution: a testing device for the production of woven biodegradable netting, comprising a frame, traction and positioning mechanisms for traction and positioning of the woven biodegradable netting production substrate symmetrically installed on the left and right sides of the frame, a long guide frame between the two sets of traction and positioning mechanisms, the long guide frame being fixed on the frame; an upper lifting seat is longitudinally slidably installed on the long guide frame, an upper support is fixed on the upper surface of the upper lifting seat, a pressure rod for testing the linear strength of the biodegradable netting production substrate is rotatably arranged between the two sets of upper supports, the pressure rod having an embedded groove, a combined pressure block for testing the single-point strength of the biodegradable netting production substrate is fitted into the embedded groove, the combined pressure block sliding along the length of the embedded groove to realize the adjustment and switching of different single-point testing points of the biodegradable netting production substrate; a tension adjustment mechanism for adjusting the tension of the biodegradable netting production substrate during single-point testing is provided on the upper lifting seat.
[0009] Preferably, a power cylinder is fixed on the frame, and the output end of the power cylinder is fixedly connected to the upper lifting seat.
[0010] Preferably, a micro motor is fitted and fixed in the inner groove of the pressure rod, the output end of the micro motor is connected to a lead screw, the combined pressure block is threaded onto the lead screw, and a retaining strip is also fixed in the pressure rod, with the combined pressure block slidably mounted on the retaining strip.
[0011] Preferably, the combined pressure block includes a movable seat that is fitted and slidably installed in an embedded groove, a test block that is rotatably connected to the movable seat, the test block protruding outward from the outside of the pressure rod and used to press against the biodegradable net production substrate to be tested; a sinking groove is opened inside the movable seat, a rotating rod is rotatably connected in the sinking groove, the rotating rod is fixedly connected to the test block, and a spiral spring is elastically connected between the rotating rod and the movable seat.
[0012] Preferably, both ends of the test block are fixed with hemispheres. The hemispheres have a smooth, low-friction contact structure on the outer surface, which is used to avoid jamming with the mesh surface during the adjustment of the test point and to achieve smooth sliding of the combined pressure block.
[0013] Preferably, the tension adjustment mechanism includes a support frame fixed on the upper lifting seat, a fixed frame fixed on the support frame, and two sets of top rods provided at the front and rear ends of the fixed frame, each set of top rods containing two rods; the pressure rod is located at one end of the inner groove and is also provided with two sets of strip grooves, the two sets of strip grooves being symmetrically distributed about the inner groove; the top rod is located directly above the strip groove, and the downward movement of the top rod presses the biodegradable net production substrate into the strip groove to stretch and tighten it.
[0014] Preferably, the fixed frame has a vertical slide rail and an inclined slide rail longitudinally, with the inclined slide rail connected to the bottom of the vertical slide rail; a slide rod is fixedly connected to the top rod, and the slide rod is slidably connected in the vertical slide rail and the inclined slide rail; a guide column slides longitudinally through the fixed frame, and a bidirectional telescopic rod is fixed at the bottom of the guide column, with the telescopic ends of the bidirectional telescopic rod respectively fixedly connected to the top rods on both sides.
[0015] Preferably, a cam is rotatably connected to the upper support, the cam is fixedly connected to the pressure rod, and a connecting rod is fixedly fixed to the cam off-center. A power motor is fixed to the upper support, and the cam is fixed to the output end of the power motor. A lifting frame is fixedly connected to the top rod, and a sliding frame is fixed to the bottom of the lifting frame. The connecting rod is slidably connected to the sliding frame.
[0016] Preferably, the traction positioning mechanism includes a short guide frame fixed on the frame, a lower support fixed on the short guide frame, a pressure sensing rod installed on the lower support, and multiple pressure sensors fixed along the length direction at the bottom of the pressure sensing rod; a lower lifting seat slidably installed on the short guide frame, and two sets of guide rollers installed on the lower lifting seat, the two sets of guide rollers being symmetrically distributed about the pressure sensing rod; a tensioning cylinder fixed on the frame, the output end of the tensioning cylinder being fixedly connected to the lower lifting seat.
[0017] Preferably, a positioning seat is fixed on the lower lifting seat, and a threaded positioning rod is connected through the positioning seat. The threaded positioning rod is locked and limited on the positioning seat by a nut. A fixing rod is installed on the threaded positioning rod, and the fixing rod is located directly above the guide roller.
[0018] Compared with the prior art, the beneficial effects of the present invention are:
[0019] This testing device for woven biodegradable netting production achieves large-area overall strength testing through line contact by controlling the upward movement of the pressure rod. It also allows for single-point strength testing by embedding a laterally sliding combined pressure block inside the pressure rod and driving the block along the length of the pressure rod via a screw. Flipping the pressure rod so the combined pressure block faces upward and supports the netting surface allows for switching to single-point strength testing. This device integrates both overall linear strength and local single-point strength testing functions, reducing the investment cost of production line equipment. It can continuously perform simultaneous sampling inspections of the entire biodegradable netting substrate, including both overall mechanical strength and local weak points, thus improving the efficiency of outgoing testing of biodegradable netting substrates.
[0020] The upper lifting seat is equipped with a tension adjustment mechanism to regulate the tension of the biodegradable net production substrate during single-point testing. Based on the linkage of cam, connecting rod and slide frame, the pressure rod itself rotates as the power source, driving the lifting frame to move longitudinally. This causes the slide rod to slide along the vertical slide and the inclined slide in sequence. By utilizing the constraints of the vertical and inclined slide tracks, the top rod first presses down vertically and then laterally expands the biodegradable net production substrate. When pressing down, the net surface of the area to be tested is pressed into the groove of the pressure rod for limitation. During the lateral displacement, the front and back sides of the net surface to be tested are stretched synchronously. Combined with the axial pre-tightening of the left and right traction positioning mechanism, the net surface to be tested is tightened and positioned on all four sides, avoiding looseness and wrinkles in the middle area of the net surface under single-point testing conditions, and eliminating the test data deviation caused by the deformation of the net surface.
[0021] The combined pressure block uses a movable base with a rotatable test block, and the end of the test block is equipped with a smooth hemisphere. During the lateral repositioning of the test block driven by the screw, the hemisphere contacts the mesh surface with low friction, avoiding problems such as mesh wire jamming, snagging and damage during slippage. This ensures that the combined pressure block can smoothly switch the test points across mesh openings and nodes. The spiral spring can automatically reset after the test block is compressed, which facilitates continuous multi-point cyclic testing. In conjunction with the pressure sensor and pressure sensing rod, load data is collected in real time, which can accurately capture the ultimate destructive load of weak points such as weaving nodes and mesh openings, and realize the judgment of hidden weak points of biodegradable mesh.
[0022] The traction and positioning mechanisms on both sides of the device use cylinders to drive the lower lifting seat to move, linking two sets of guide rollers and adjustable threaded positioning rods to clamp the structure. The clamping distance and pretension can be adjusted according to the different thicknesses and mesh counts of the woven biodegradable net. The pressure sensing rod is equipped with pressure sensors arranged at multiple points to monitor the clamping tension at both ends of the net in real time, ensuring that the initial clamping tension of the entire net substrate is uniform. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the frame structure of the present invention.
[0024] Figure 2 This is a schematic diagram of the lifting seat structure of the present invention.
[0025] Figure 3 This is a schematic diagram of the pressure rod structure of the present invention.
[0026] Figure 4 This is a schematic diagram of the combined pressure block structure of the present invention.
[0027] Figure 5 This is a schematic diagram of the lead screw structure of the present invention.
[0028] Figure 6 This is a schematic diagram of the support frame structure of the present invention.
[0029] Figure 7 This is a schematic diagram of the top rod structure of the present invention.
[0030] Figure 8 This is a schematic diagram of the bidirectional telescopic rod structure of the present invention.
[0031] Figure 9 This is a schematic diagram of the test block and hemispherical structure of the present invention.
[0032] Figure 10 This is a schematic diagram of the pressure sensing rod structure of the present invention.
[0033] In the diagram: 1. Frame; 2. Traction and positioning mechanism; 21. Short guide frame; 22. Lower support; 23. Pressure sensing rod; 24. Lower lifting seat; 241. Tensioning cylinder; 25. Guide roller; 251. Positioning seat; 252. Threaded positioning rod; 253. Fixing rod; 3. Long guide frame; 4. Upper lifting seat; 41. Power cylinder; 5. Upper support; 51. Power motor; 6. Pressure rod; 7. Embedded groove; 71. Micro motor; 72. Wire 73. Rod; 8. Clip; 9. Combined pressure block; 10. Moving seat; 11. Test block; 12. Hemisphere; 13. Sinking groove; 14. Rotating rod; 15. Spiral spring; 16. Support frame; 17. Fixed frame; 18. Top rod; 19. Lifting frame; 10. Slide frame; 111. Cam; 12. Connecting rod; 13. Strip groove; 14. Slide rod; 15. Vertical slide; 16. Inclined slide; 17. Guide column; 18. Bidirectional telescopic rod. Detailed Implementation
[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0035] Example 1: Please refer to Figure 1 - Figure 5The present invention provides the following technical solution: a testing device for the production of woven biodegradable netting, comprising a frame 1, traction and positioning mechanisms 2 for traction and positioning of the woven biodegradable netting production substrate symmetrically installed on the left and right sides of the frame 1, a long guide frame 3 provided between the two sets of traction and positioning mechanisms 2, the long guide frame 3 being fixed on the frame 1; an upper lifting seat 4 is longitudinally slidably installed on the long guide frame 3, an upper support 5 is fixed on the upper surface of the upper lifting seat 4, a pressure rod 6 for detecting the linear strength of the biodegradable netting production substrate is rotatably arranged between the two sets of upper supports 5, an inner groove 7 is provided on the pressure rod 6, a combined pressure block 8 for detecting the single-point strength of the biodegradable netting production substrate is fitted in the inner groove 7, the combined pressure block 8 slides along the length direction of the inner groove 7 to realize the adjustment and switching of different single-point detection points of the biodegradable netting production substrate; the upper lifting seat 4 is provided with a tension adjustment mechanism for adjusting the tension of the biodegradable netting production substrate during single-point detection.
[0036] The frame 1 serves as the rigid load-bearing foundation of the entire machine, providing a stable installation benchmark and support for the traction and positioning mechanisms 2 on both sides, the central guide frame 3, and other components. The symmetrically arranged traction and positioning mechanisms 2 can reliably clamp and pre-tighten the biodegradable net substrate along its length and in the left and right directions, ensuring that the net does not slip or deviate during the testing process. After the biodegradable net production substrate is confined on the traction and positioning mechanisms 2 and the pressure rod 6, the upper lifting seat 4 is controlled to move upward on the long guide frame 3, causing the pressure rod 6 to move upward and press against the surface of the biodegradable net production substrate. In addition, the pressure rod 6 is rotatably mounted on the two sets of upper supports 5. The machine incorporates a combined pressure block 8 embedded in its inner groove 7, which controls the rotation of the pressure rod 6 to press its own surface onto the biodegradable net production substrate, or to press the combined pressure block 8 onto the biodegradable net production substrate. This allows for both large-scale linear strength testing of the net surface in a whole-line contact manner and switching to single-point testing mode by rotation. In conjunction with the tension adjustment mechanism on the lifting seat 4, the net body can be simultaneously tightened and positioned in the front and rear directions during single-point testing. This enables the entire machine to integrate large-scale linear strength testing and precise single-point testing functions on the same structure, improving testing efficiency and data consistency.
[0037] Please see Figure 1 and Figure 2 A power cylinder 41 is fixed on the frame 1, and the output end of the power cylinder 41 is fixedly connected to the upper lifting seat 4.
[0038] The power cylinder 41 provides vertical driving force to the upper lifting seat 4, which drives the upper support 5, pressure rod 6 and combined pressure block 8 to lift as a whole, completing the loading and unloading of pressure on the mesh surface. The lifting process is stable and controllable, and the loading stroke and loading force can be precisely adjusted to meet the testing and loading requirements of biodegradable meshes of different thicknesses and strengths.
[0039] Please see Figure 3 -Figure 5 A micro motor 71 is fitted and fixed in the inner groove 7 of the pressure rod 6. The output end of the micro motor 71 is connected to a lead screw 72. The combined pressure block 8 is threaded onto the lead screw 72. A retaining strip 73 is also fixed in the pressure rod 6. The combined pressure block 8 is slidably mounted on the retaining strip 73.
[0040] The micro motor 71 drives the lead screw 72 to rotate, which in turn drives the combined pressure block 8 to slide along the clamping strip 73 under the action of thread transmission. The clamping strip 73 restricts the circumferential rotation of the combined pressure block 8, ensuring that it only moves in a straight line in the pressure rod 6. This allows for adjustment of the position of the combined pressure block 8 on the pressure rod 6. According to the testing needs, any node or mesh position on the mesh surface can be selected for single-point strength testing, improving the flexibility and coverage of the test point selection.
[0041] Please see Figure 4 and Figure 9 The combined pressure block 8 includes a movable seat 81 that is fitted and slidably installed in the inner groove 7. A test block 82 is rotatably connected to the movable seat 81. The test block 82 protrudes outward and is disposed outside the pressure rod 6 and is used to press against the biodegradable net production substrate to be tested. A sinking groove 84 is opened inside the movable seat 81. A rotating rod 85 is rotatably connected in the sinking groove 84. The rotating rod 85 is fixedly connected to the test block 82, and a spiral spring 86 is elastically connected between the rotating rod 85 and the movable seat 81.
[0042] The test block 82 is rotatably connected to the movable seat 81 via the rotating rod 85. When the combined pressure block 8 moves and adjusts the detection point on the surface of the biodegradable mesh production substrate, the test block 82 can rotate slightly to adapt to the mesh angle when it is in contact with the surface of the biodegradable mesh production substrate and is under pressure. The spiral spring 86 provides the test block 82 with the rotational reset force. It automatically resets after a single test, which is convenient for continuous multi-point testing. The outward convex setting of the test block 82 can directly contact the mesh surface for loading, ensuring that the load is concentrated on the target point during single-point testing, thus improving the accuracy of the test data.
[0043] Please see Figure 4 and Figure 9 Both ends of the test block 82 are fixed with hemispheres 83. The hemispheres 83 have a smooth outer surface and low friction contact structure, which is used to avoid jamming with the mesh during the adjustment of the test point and to achieve smooth sliding of the combined pressure block 8.
[0044] The smooth curved surface of the hemispherical 83 contacts the mesh surface, which greatly reduces the frictional resistance when the combined pressure block 8 moves laterally, avoids snagging or tearing the mesh wires during the movement, protects the biodegradable mesh substrate from damage, and ensures that the combined pressure block 8 moves smoothly without jamming, making the point switching fast and stable.
[0045] Example 2: Please refer to Figure 3 - Figure 7Based on Embodiment 1, a tension adjustment mechanism is also disclosed, the specific structure of which is as follows: The tension adjustment mechanism includes a support frame 9 fixed on the upper lifting seat 4, a fixed frame 10 fixed on the support frame 9, and two sets of top rods 11 arranged at the front and rear ends of the fixed frame 10, each set of top rods 11 containing two rods; the pressure rod 6 is located at one end of the inner groove 7 and is also provided with two sets of strip grooves 12, the two sets of strip grooves 12 being symmetrically distributed about the inner groove 7; the top rods 11 are located directly above the strip grooves 12, and the downward movement of the top rods 11 presses the biodegradable net production substrate into the strip grooves 12 to stretch and tighten it.
[0046] When the power motor 51 controls the cam 113 and pressure rod 6 to rotate, the combined pressure block 8 on the pressure rod 6 rotates toward the biodegradable net production substrate. Using the power of the rotation of the pressure rod 6, the two sets of top rods 11 are controlled to move closer to the surface of the pressure rod 6. The two sets of top rods 11 press the biodegradable net production substrate into the strip groove 12 on the surface of the pressure rod 6, and stretch and tighten the biodegradable net production substrate to both sides along the length direction of the strip groove 12. With the cooperation of the left and right traction positioning mechanism 2, a four-sided tension state is formed, eliminating the problem of looseness and wrinkles on the net surface during single-point detection, and ensuring that the net surface is subjected to uniform force during detection.
[0047] Please see Figure 6 - Figure 8 The fixed frame 10 has a vertical slide rail 14 and an inclined slide rail 15 longitudinally provided, with the inclined slide rail 15 passing through and connected to the bottom of the vertical slide rail 14; a slide rod 13 is fixedly connected to the top rod 11, and the slide rod 13 is slidably connected in the vertical slide rail 14 and the inclined slide rail 15; a guide column 16 slides longitudinally through the fixed frame 10, and a two-way telescopic rod 17 is fixed at the bottom of the guide column 16, with the telescopic ends of the two-way telescopic rod 17 being fixedly connected to the top rod 11 on both sides respectively.
[0048] When the top rod 11 moves closer to the pressure rod 6, it drives the externally fixed top rod 11 to move synchronously. The top rod 11 slides from the vertical slide rail 14 to the inclined slide rail 15. When the slide rod 13 moves vertically down along the vertical slide rail 14, the top rod 11 completes the pressing and positioning action on the biodegradable net production substrate. The top rod 11 presses the biodegradable net production substrate into the strip groove 12. After the slide rod 13 enters the inclined slide rail 15, the top rod 11 undergoes lateral displacement under the oblique guiding action, thereby stretching and tightening the biodegradable net production substrate. The bidirectional telescopic rod 17 synchronously extends and retracts to adapt to the lateral movement, realizing the composite action of the top rod 11 pressing down first and then expanding outward, completing the net surface positioning and bidirectional tensioning. The guide column 16 can ensure that the top rod 11 rises and falls smoothly and avoids movement deviation.
[0049] Please see Figure 3 - Figure 7A cam 113 is rotatably connected to the upper support 5. The cam 113 is fixedly connected to the pressure rod 6, and a connecting rod 114 is fixed off-center on the cam 113. A power motor 51 is fixed on the upper support 5, and the cam 113 is fixed at the output end of the power motor 51. A lifting frame 111 is fixedly connected to the top rod 11. A sliding frame 112 is fixed at the bottom of the lifting frame 111, and the connecting rod 114 is slidably connected in the sliding frame 112.
[0050] The operating motor 51 drives the cam 113 to rotate, which in turn drives the pressure rod 6 to rotate synchronously, thereby realizing the switching of detection modes. When the cam 113 rotates, the connecting rod 114 is adjusted to slide in the slide frame 112. When the cam 113 rotates and drives the connecting rod 114 to rotate from the top to the bottom, it can drive the lifting frame 111 and the top rod 11 to move vertically downward. This allows the top rod 11 to move closer to the pressure rod 6 synchronously when switching detection modes, thereby stretching and tightening the biodegradable net production substrate and maintaining uniform force on the biodegradable net production substrate during single-point detection.
[0051] Please see Figure 1 and Figure 10 The traction positioning mechanism 2 includes a short guide frame 21 fixed on the frame 1, a lower support 22 fixed on the short guide frame 21, a pressure sensing rod 23 installed on the lower support 22, and multiple pressure sensors fixed along the length direction at the bottom of the pressure sensing rod 23; a lower lifting seat 24 slidably installed on the short guide frame 21, and two sets of guide rollers 25 installed on the lower lifting seat 24, which are symmetrically distributed about the pressure sensing rod 23; a tensioning cylinder 241 fixed on the frame 1, and the output end of the tensioning cylinder 241 is fixedly connected to the lower lifting seat 24.
[0052] The tensioning cylinder 241 drives the lower lifting seat 24 to rise and fall stably along the short guide frame 21, which in turn drives the two sets of guide rollers 25 to press down synchronously, so that the biodegradable net production substrate is stably clamped between the guide rollers 25 and the pressure sensing rod 23, thereby achieving reliable clamping and axial pre-tensioning of the left and right sides of the net.
[0053] Multiple pressure sensors arranged along the length of the bottom of the pressure sensing rod 23 can collect the actual tension distribution of the biodegradable net production substrate in the clamping section in real time and continuously at multiple points. On the one hand, this ensures that the tension of the left and right traction positioning mechanisms 2 remains balanced, avoiding uneven force caused by one side of the net being too tight and the other side being too loose. On the other hand, it can synchronously feed back the real-time tension data to the detection system, providing a benchmark correction and state judgment basis for the load data when performing linear strength detection and single-point strength detection, eliminating detection errors caused by unstable or inconsistent initial tension, and improving the accuracy and reliability of the strength detection results of the biodegradable net production substrate.
[0054] Please see Figure 10A positioning seat 251 is fixed on the lower lifting seat 24. A threaded positioning rod 252 is connected through the positioning seat 251. The threaded positioning rod 252 is locked and limited on the positioning seat 251 by a nut. A fixing rod 253 is installed on the threaded positioning rod 252. The fixing rod 253 is located directly above the guide roller 25.
[0055] The threaded positioning rod 252 can be adjusted in height within the positioning seat 251 and locked with a nut, driving the fixed rod 253 to move up and down, adjusting the distance between the fixed rod 253 and the guide roller 25, adapting to the clamping and fixing of biodegradable nets of different thicknesses and mesh counts, with an adjustable clamping range, and a firm clamping without slippage, further improving the stability of the positioning of the biodegradable net production substrate and improving the reliability of the testing process.
[0056] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A testing device for the production of woven biodegradable netting, comprising a frame (1), characterized in that: The frame (1) is symmetrically equipped with traction positioning mechanisms (2) for traction positioning of the substrate for woven biodegradable net production. A long guide frame (3) is provided between the two sets of traction positioning mechanisms (2) and the long guide frame (3) is fixed on the frame (1). An upper lifting seat (4) is longitudinally slidably installed on the long guide frame (3). An upper support (5) is fixed on the upper surface of the upper lifting seat (4). A pressure rod (6) for detecting the linear strength of the biodegradable net production substrate is rotatably set between the two sets of upper supports (5). An inner groove (7) is opened on the pressure rod (6). A combined pressure block (8) for detecting the single point strength of the biodegradable net production substrate is fitted in the inner groove (7). The combined pressure block (8) slides along the length direction of the inner groove (7) to realize the adjustment and switching of different single point detection points of the biodegradable net production substrate. The upper lifting seat (4) is equipped with a tension adjustment mechanism to regulate the tension of the biodegradable net production substrate during single-point testing.
2. The testing device for the production of woven biodegradable netting according to claim 1, characterized in that: A power cylinder (41) is fixed on the frame (1), and the output end of the power cylinder (41) is fixedly connected to the upper lifting seat (4).
3. The testing device for the production of woven biodegradable netting according to claim 1, characterized in that: A micro motor (71) is fitted and fixed in the inner groove (7) of the pressure rod (6). The output end of the micro motor (71) is connected to a lead screw (72). The combined pressure block (8) is threaded onto the lead screw (72). A retaining strip (73) is also fixed in the pressure rod (6). The combined pressure block (8) is slidably mounted on the retaining strip (73).
4. The testing device for the production of woven biodegradable netting according to claim 3, characterized in that: The combined pressure block (8) includes a movable seat (81) that is fitted and slidably installed in the inner groove (7), and a test block (82) is rotatably connected to the movable seat (81). The test block (82) protrudes outward and is disposed on the outside of the pressure rod (6) and is used to press against the biodegradable net production substrate to be tested. The movable seat (81) has a recessed groove (84) inside, and a rotating rod (85) is rotatably connected in the recessed groove (84). The rotating rod (85) is fixedly connected to the test block (82), and a spiral spring (86) is elastically connected between the rotating rod (85) and the movable seat (81).
5. The testing device for the production of woven biodegradable netting according to claim 4, characterized in that: Both ends of the test block (82) are fixed with hemispheres (83). The hemispheres (83) have a smooth outer surface and low friction contact structure, which is used to avoid jamming with the mesh during the adjustment of the test point and to realize the smooth sliding of the combined pressure block (8).
6. The testing device for the production of woven biodegradable netting according to claim 1, characterized in that: The tension adjustment mechanism includes a support frame (9) fixed on the upper lifting seat (4), a fixed frame (10) fixed on the support frame (9), and two sets of top rods (11) provided at the front and rear ends of the fixed frame (10), each set of top rods (11) containing two rods; The pressure rod (6) is located at one end of the inner groove (7) and is provided with two sets of strip grooves (12), which are symmetrically distributed about the inner groove (7); The top rod (11) is located directly above the strip groove (12), and the top rod (11) moves down to press the biodegradable mesh production substrate into the strip groove (12) and stretch it.
7. The testing device for the production of woven biodegradable netting according to claim 6, characterized in that: The fixed frame (10) is provided with a vertical slide rail (14) and an inclined slide rail (15) in the longitudinal direction, and the inclined slide rail (15) is connected to the bottom of the vertical slide rail (14); A slide rod (13) is fixedly connected to the top rod (11), and the slide rod (13) is slidably connected in the vertical slide (14) and the inclined slide (15); A guide column (16) slides longitudinally through the fixed frame (10). A two-way telescopic rod (17) is fixed at the bottom of the guide column (16). The telescopic ends of the two-way telescopic rod (17) are fixedly connected to the top rods (11) on both sides respectively.
8. The testing device for the production of woven biodegradable netting according to claim 7, characterized in that: A cam (113) is rotatably connected to the upper support (5). The cam (113) is fixedly connected to the pressure rod (6), and a connecting rod (114) is fixed off-center on the cam (113). A power motor (51) is fixed on the upper support (5), and the cam (113) is fixed at the output end of the power motor (51). A lifting frame (111) is fixedly connected to the top rod (11), and a sliding frame (112) is fixed at the bottom of the lifting frame (111). The connecting rod (114) is slidably connected in the sliding frame (112).
9. The testing device for the production of woven biodegradable netting according to claim 1, characterized in that: The traction positioning mechanism (2) includes a short guide frame (21) fixed on the frame (1), a lower support (22) fixed on the short guide frame (21), a pressure sensing rod (23) installed on the lower support (22), and multiple pressure sensors fixed along the length direction at the bottom of the pressure sensing rod (23). A lower lifting seat (24) is slidably installed on the short guide frame (21), and two sets of guide rollers (25) are installed on the lower lifting seat (24). The two sets of guide rollers (25) are symmetrically distributed about the pressure sensing rod (23). A tensioning cylinder (241) is fixed on the frame (1), and the output end of the tensioning cylinder (241) is fixedly connected to the lower lifting seat (24).
10. A testing device for the production of woven biodegradable netting according to claim 9, characterized in that: A positioning seat (251) is fixed on the lower lifting seat (24), and a threaded positioning rod (252) is connected through the positioning seat (251). The threaded positioning rod (252) is locked and limited on the positioning seat (251) by a nut. A fixing rod (253) is installed on the threaded positioning rod (252), and the fixing rod (253) is located directly above the guide roller (25).