A polyester screen tensile test detection device

Abstract

The utility model provides a kind of polyester screen mesh tensile test detection device, it is related to polyester screen mesh tensile test field, and it includes: base, the upper end of the base is connected with rack, and the upper end of rack is equipped with hydraulic cylinder, and the lower end of hydraulic cylinder is connected with lifting plate, the lower end of lifting plate is connected with tension sensor, and the lower end of tension sensor is connected with upper clamping device, and the inside of upper clamping device is equipped with cleaning plate, the downside of upper clamping device is equipped with lower clamping device, and lower clamping device is fixed on the upside of base, while pull-out box is located in the inside of base, and the lower clamping device bottom is communicated with pull-out box, the outside of rack is hinged with door leaf, and the middle of door leaf is equipped with observation window.The utility model has the clamping effect of the stable polyester screen mesh, guarantees the accuracy of detection result, and has the effect of anti-fracture splashing protection and convenient cleaning collection.

Description

Technical Field

[0001] This utility model relates to the field of polyester screen tensile testing technology, specifically to a polyester screen tensile testing device. Background Technology

[0002] The main material of polyester screens is polyethylene terephthalate (PET), which is a polymer compound formed by the condensation polymerization of diacids and glycols. It is also known as polyester chips or PET chemical fibers. Polyester screens need to undergo tensile tests before leaving the factory. A search revealed existing technology (publication number: CN112665981A), which describes "a polyester screen tension detection device, including a detection platform with tension rollers on both sides. A clamping mechanism is provided in the slots of the tension rollers to clamp the end of the screen. A light emitter and a light receiver sensor are positioned opposite each other on the detection platform for emitting and receiving planar light beams. Several rectangularly arranged telescopic units are provided in a groove at the top of the detection platform. A motor drives a rotating shaft to rotate, which in turn drives the left and right worm gears fitted to it to rotate synchronously, thereby driving the worm wheels on both sides and the tension rollers to rotate relative to each other, thus winding and tensioning the screen. A pressure detector detects the lateral pressure of the roller shaft against the rotating hole. As the screen is fully unfolded and tensioned, all telescopic units are pressed down to trigger a measuring mechanism to measure the rotation distance of the worm gears. As some telescopic units pass through the broken screen, the measuring mechanism stops measuring and the motor stops rotating, thus realizing the detection of screen tension and elongation."

[0003] In the aforementioned patent document, the polyester screen tension detection device involves a clamp fixing one end of the polyester screen in a slot. Due to the high smoothness of the polyester screen, the single clamp is prone to slipping. Furthermore, when the tension roller rotates, the edge of the slot exerts a shearing effect on the polyester screen, meaning the polyester screen is easily cut off by the edge of the slot, leading to inaccurate experimental results. In addition, the polyester screen is prone to breakage when it reaches a certain tensile force, and the device has no external protection, posing a safety hazard. Moreover, the broken screen that flies out is difficult to clean. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, a polyester screen tensile testing device is provided to solve the problems mentioned in the background.

[0005] To achieve the above objectives, a tensile testing device for polyester screens is provided, comprising: a base, a frame connected to the upper end of the base, a hydraulic cylinder mounted on the upper end of the frame, a lifting plate connected to the lower end of the hydraulic cylinder, a tensile sensor connected to the lower end of the lifting plate, an upper clamping device connected to the lower end of the tensile sensor, a cleaning plate provided inside the upper clamping device, a lower clamping device provided on the lower side of the upper clamping device and fixed to the upper side of the base, a pull-out box provided inside the base, and the bottom of the lower clamping device communicating with the pull-out box; a door panel hinged to the outer side of the frame, and an observation window provided in the middle of the door panel.

[0006] Furthermore, the base has a pull-out groove inside, and a connecting hole is provided on the upper side of the pull-out groove, and the pull-out box is slidably inserted into the pull-out groove.

[0007] Furthermore, a data acquisition device is installed on the side of the frame, and a synchronization controller is provided on the top of the frame. The data acquisition device is electrically connected to the tension sensor, and the synchronization controller is electrically connected to the hydraulic cylinder.

[0008] Furthermore, the inner side of the door panel is provided with a second magnet, and the front side of the frame is provided with a first magnet, and the first magnet and the second magnet are attracted to each other by opposite poles.

[0009] Furthermore, the lifting plate has sliders at both ends, and the sliders are slidably connected in vertical grooves opened in the inner wall of the frame, and the tension sensor is installed in the middle of the lower side of the lifting plate.

[0010] Furthermore, the upper clamping device has the same structure as the lower clamping device, and the upper clamping device includes a fixing plate, and the fixing plate has a clamping groove that runs vertically through it.

[0011] Furthermore, a first clamping plate and a second clamping plate are slidably connected inside the clamping groove, and each of the first clamping plate and the second clamping plate has a guide hole and a guide post on its opposite side, and an electric push rod is connected to the outer end of each of the first clamping plate and the second clamping plate.

[0012] Furthermore, the guide holes and guide posts are alternately arranged in both the horizontal and vertical directions, and the guide holes and guide posts on the two clamps are inserted into each other.

[0013] Furthermore, the cleaning plate has a through hole inside, and the through hole coincides with the guide hole. The guide post passes through the through hole, and a handle is connected to the outer end of the cleaning plate.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In use, the upper and lower clamping devices include a fixing plate and a clamping groove, allowing the upper and lower ends of the polyester screen to be inserted into the clamping groove respectively. Then, by activating the electric actuator, the first and second clamping plates are pushed closer together to clamp the polyester screen. In this configuration, guide columns pass through the mesh of the polyester screen, allowing the polyester screen to be not only clamped and fixed by the clamping plates but also hooked by the guide columns, making it less prone to slippage and thus improving the clamping stability of the polyester screen. At the same time, as the lifting plate and the clamping groove move vertically in a consistent manner, shearing forces are avoided on the polyester screen, ensuring the accuracy of the measurement results.

[0016] 2. The door panel is used to close the screen during testing using the first and second magnets, which effectively prevents the polyester screen from splashing when it breaks, protecting the operator and eliminating the need for them to wear protective equipment. At the same time, the broken polyester screen can be collected in a pull-out box, and the cleaning plate pulls the edges of the screen clamped on the guide post outward, making it easy to clean. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of an embodiment of the present utility model.

[0018] Figure 2 This is a schematic diagram of the upper clamping device according to an embodiment of the present utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the first clamping plate according to an embodiment of the present utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the cleaning plate according to an embodiment of the present utility model.

[0021] Figure 5 This is a schematic cross-sectional view of the base structure according to an embodiment of the present utility model.

[0022] In the diagram: 1. Base; 11. Pull-out box; 12. Pull-out slot; 13. Connecting hole; 2. Frame; 21. Data acquisition unit; 22. Synchronous controller; 23. First magnet; 24. Hydraulic cylinder; 3. Lifting plate; 4. Tension sensor; 5. Upper clamping device; 51. Fixing plate; 52. First clamping plate; 521. Guide hole; 522. Guide post; 53. Electric push rod; 54. Second clamping plate; 55. Clamping slot; 6. Cleaning plate; 61. Through hole; 62. Handle; 7. Lower clamping device; 8. Door panel; 9. Second magnet; 10. Observation window. Detailed Implementation

[0023] Reference Figures 1 to 5As shown, this utility model provides a polyester screen tensile testing device, including: a base 1, a frame 2 connected to the upper end of the base 1, a hydraulic cylinder 24 installed at the upper end of the frame 2, a lifting plate 3 connected to the lower end of the hydraulic cylinder 24, a tensile sensor 4 connected to the lower end of the lifting plate 3, an upper clamping device 5 connected to the lower end of the tensile sensor 4, a cleaning plate 6 provided inside the upper clamping device 5, a lower clamping device 7 provided on the lower side of the upper clamping device 5, and the lower clamping device 7 fixed on the upper side of the base 1, a pull-out box 11 provided inside the base 1, and the bottom of the lower clamping device 7 communicating with the pull-out box 11, a door panel 8 hinged to the outer side of the frame 2, and an observation window 10 provided in the middle of the door panel 8.

[0024] Specifically, the frame 2 is designed as a rectangular frame structure, and a back panel is provided on its rear side, so that the door panel 8 can be closed to achieve a closed effect.

[0025] As a preferred implementation, the observation window 10 facilitates the observation of the tensile strength test of the polyester screen.

[0026] like Figure 1 and Figure 5 In the case, the base 1 has a pull-out groove 12 inside, and a connection hole 13 is provided on the upper side of the pull-out groove 12. The pull-out box 11 is slidably inserted into the pull-out groove 12. A data acquisition device 21 is installed on the side of the frame 2, and a synchronous controller 22 is provided on the top of the frame 2. The data acquisition device 21 is electrically connected to the tension sensor 4, and the synchronous controller 22 is electrically connected to the hydraulic cylinder 24. A second magnet 9 is provided on the inner side of the door panel 8, and a first magnet 23 is provided on the front side of the frame 2. The first magnet 23 and the second magnet 9 are attracted by opposite poles. The lifting plate 3 has sliders at both ends, and the sliders are slidably connected in the vertical sliding grooves provided on the inner wall of the frame 2. The tension sensor 4 is installed in the middle position on the lower side of the lifting plate 3.

[0027] Specifically, the data acquisition unit 21 also includes an integrated display to detect the data from the tension sensor 4 and display the values ​​in real time.

[0028] Specifically, the synchronization controller 22 facilitates the synchronous start-up of the two sets of hydraulic cylinders 24, thereby maintaining a balanced driving effect on the lifting plate 3.

[0029] like Figures 1 to 4In the middle, the upper clamping device 5 and the lower clamping device 7 have the same structure. The upper clamping device 5 includes a fixed plate 51, and the fixed plate 51 has a vertically penetrating clamping groove 55. The first clamping plate 52 and the second clamping plate 54 are slidably connected inside the clamping groove 55. The opposite sides of the first clamping plate 52 and the second clamping plate 54 are provided with guide holes 521 and guide posts 522. Electric push rods 53 are connected to the outer ends of the first clamping plate 52 and the second clamping plate 54. The guide holes 521 and guide posts 522 are alternately arranged in the horizontal and vertical directions. The guide holes 521 and guide posts 522 on the two clamping plates are correspondingly inserted. The cleaning plate 6 has a through hole 61 inside, and the through hole 61 coincides with the position of the guide hole 521. At the same time, the guide post 522 passes through the through hole 61, and a handle 62 is connected to the outer end of the cleaning plate 6.

[0030] Specifically, the outer diameter of the guide post 522 is set smaller than the mesh size of the polyester screen, making it easy to pass directly through the screen. Multiple guide posts 522 and guide holes 521 are matched and inserted to achieve a balanced hanging effect on the polyester screen.

[0031] Specifically, the handle 62 is located on the outside of the upper clamping device 5, and two sets are provided in both the upper clamping device 5 and the lower clamping device 7. The cleaning plate 6 is a detachable component, which facilitates the removal of the broken screen after clamping and squeezing from the guide post 522.

[0032] In use, the upper and lower clamping devices, including the fixing plates and clamping slots, allow the upper and lower ends of the polyester screen to be inserted into the clamping slots respectively. Then, by activating the electric actuator, the first and second clamping plates are moved closer together, clamping the polyester screen. Guide posts pass through the mesh of the polyester screen, ensuring that the screen is not only clamped and fixed by the clamping plates but also hooked onto the guide posts, preventing slippage and improving clamping stability. Simultaneously, the vertical movement of the lifting plate and clamping slots avoids shearing forces on the screen, ensuring accurate measurement results. A door panel is used to close the screen during testing using the first and second magnets, effectively preventing splashing when the screen breaks, protecting operators and eliminating the need for protective gear. Broken screen fragments can be collected in a pull-out box, and a cleaning plate pulls the edges of the screen clamped on the guide posts outwards for easy cleaning.

[0033] The polyester screen tensile testing device of this invention can effectively solve the problems mentioned in the background technology. Based on the existing polyester screen tensile testing device technology, it has a stable clamping effect on the polyester screen, ensuring the accuracy of the test results. At the same time, it has the effects of preventing breakage and splashing and facilitating cleaning and collection.

Claims

1. A tensile strength testing device for polyester screens, comprising: The base (1) is characterized in that: the upper end of the base (1) is connected to a frame (2), and the upper end of the frame (2) is equipped with a hydraulic cylinder (24), and the lower end of the hydraulic cylinder (24) is connected to a lifting plate (3). The lower end of the lifting plate (3) is connected to a tension sensor (4), and the lower end of the tension sensor (4) is connected to an upper clamping device (5). The upper clamping device (5) is provided with a cleaning plate (6) inside. The lower side of the upper clamping device (5) is provided with a lower clamping device (7), and the lower clamping device (7) is fixed on the upper side of the base (1). At the same time, a pull-out box (11) is provided inside the base (1), and the bottom of the lower clamping device (7) is connected to the pull-out box (11). The outer side of the frame (2) is hinged with a door panel (8), and the middle of the door panel (8) is provided with an observation window (10).

2. The polyester screen tensile testing device according to claim 1, characterized in that, The base (1) has a pull-out groove (12) inside, and a connecting hole (13) is provided on the upper side of the pull-out groove (12), and the pull-out box (11) is slidably inserted into the pull-out groove (12).

3. The polyester screen tensile testing device according to claim 1, characterized in that, A data acquisition device (21) is installed on the side of the frame (2), and a synchronization controller (22) is provided on the top of the frame (2). The data acquisition device (21) is electrically connected to the tension sensor (4), and the synchronization controller (22) is electrically connected to the hydraulic cylinder (24).

4. The polyester screen tensile testing device according to claim 1, characterized in that, The inner side of the door panel (8) is provided with a second magnet (9), and the front side of the frame (2) is provided with a first magnet (23), and the first magnet (23) and the second magnet (9) are attracted to each other by opposite polarities.

5. The polyester screen tensile testing device according to claim 1, characterized in that, The lifting plate (3) is provided with sliders at both ends, and the sliders are slidably connected in the vertical grooves opened in the inner wall of the frame (2), and the tension sensor (4) is installed in the middle position of the lower side of the lifting plate (3).

6. The polyester screen tensile testing device according to claim 1, characterized in that, The upper clamping device (5) has the same structure as the lower clamping device (7), and the upper clamping device (5) includes a fixing plate (51), and the fixing plate (51) has a clamping groove (55) that runs vertically through it.

7. The polyester screen tensile testing device according to claim 6, characterized in that, The clamping groove (55) is slidably connected to a first clamping plate (52) and a second clamping plate (54), and each of the first clamping plate (52) and the second clamping plate (54) has a guide hole (521) and a guide post (522) on its opposite side, and an electric push rod (53) is connected to the outer end of each of the first clamping plate (52) and the second clamping plate (54).

8. The polyester screen tensile testing device according to claim 7, characterized in that, The guide holes (521) and guide posts (522) are alternately arranged in both the horizontal and vertical directions, and the guide holes (521) and guide posts (522) on the two clamps are inserted into each other.

9. The polyester screen tensile testing device according to claim 1, characterized in that, The cleaning plate (6) has a through hole (61) inside, and the through hole (61) coincides with the guide hole (521). At the same time, the guide post (522) passes through the through hole (61), and a handle (62) is connected to the outer end of the cleaning plate (6).

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