Test apparatus, control method, and fiber production apparatus

Abstract

The application discloses a kind of testing equipment, control method and fiber production equipment, it is related to fiber production and testing technical field, testing equipment includes: base, twisting device, stretching device and controller, twisting device and stretching device are integrated on base, and the automation of being able to realize twisting and stretching is controlled using controller, compared with present manual step-by-step operation mode, the position deviation and tension fluctuation generated when manual sample is transferred in twisting and stretching process are eliminated in the device, and the test repeatability and data precision are significantly improved.

Description

Technical Field

[0001] This invention relates to the field of fiber production testing technology, and in particular to a testing device, a control method, and fiber production equipment. Background Technology

[0002] In related technologies, fibers, as fine filamentous materials whether natural or synthetic, are widely used in textiles, military, medical, and construction fields because their mechanical properties are a core indicator determining product reliability. Currently, fiber mechanical property testing mainly relies on a manual quasi-static tensile testing method: operators manually cut fixed-length fiber bundles, twist them on a twist meter, transfer them to a universal tensile testing machine, and use a foot pedal to control the closure of pneumatic clamps for a quasi-static tensile test, finally manually removing waste fibers. Because this method requires manual operation of twisting, transfer, and clamping, it is prone to problems such as positional deviations, twist fluctuations, and tension fluctuations, resulting in poor repeatability and low accuracy of test results. Summary of the Invention

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a testing device that can achieve automated twisting and stretching, with good repeatability and high accuracy in the test results.

[0004] The testing equipment provided according to an embodiment of the present invention includes:

[0005] Base;

[0006] The twisting device includes a first twisting clamp and a rotary twisting assembly, wherein the first twisting clamp is connected to the base and the rotary twisting assembly is disposed below the first twisting clamp;

[0007] A stretching device includes a slide table, a lifting mechanism, a first connecting frame, a first stretching clamp, a second stretching clamp, and a force sensor. The slide table is connected to the lifting mechanism, which is connected to the base and configured to move the slide table up and down. A rotary twisting assembly is connected to the slide table. The first stretching clamp is connected to the base via the first connecting frame. The force sensor is located between the first connecting frame and the base and configured to detect the force on the first stretching clamp. The second stretching clamp is connected to the slide table.

[0008] The controller, the first twisting clamp, the rotary twisting assembly, the lifting mechanism, the first tension clamp, the second tension clamp, and the force sensor are all electrically connected to the controller;

[0009] In the vertical direction, the first twisting clamp, the first stretching clamp, the second stretching clamp, and the rotating twisting assembly are arranged sequentially from top to bottom at intervals.

[0010] According to the testing equipment provided in the embodiments of the present invention, the first twisting fixture includes a first twisting driver, two first connecting arms and two first clamping plates. The two first connecting arms are connected to the first twisting driver, and the two first clamping plates are respectively horizontally rotatably connected to opposite sides of the two first connecting arms. The first twisting driver is configured to drive the two first connecting arms, thereby causing the two first clamping plates to move towards or away from each other.

[0011] The rotary twisting assembly includes a rotary twisting driver, two second connecting arms, and two second clamping plates. The two second connecting arms are connected to the rotary twisting driver, and the two second clamping plates are vertically rotatably connected to opposite sides of the two second connecting arms. The rotary twisting driver is configured to drive the two second connecting arms to rotate and to drive the two second clamping plates to move towards or away from each other.

[0012] According to the testing equipment provided in the embodiments of the present invention, at least one of the upper ends of the first clamping piece and / or at least one of the lower ends of the second clamping piece are provided with positioning grooves.

[0013] According to the testing equipment provided in the embodiments of the present invention, the first connecting frame includes a hanging rod and two spaced-apart first connecting plates. The upper end of the hanging rod is connected to the base through the force sensor. The first tensile clamp includes a first clamping driver, a first clamping block A and a first clamping block B. The first clamping block A and the first clamping block B are respectively disposed on opposite sides of the two first connecting plates. The first clamping driver is connected to one of the first connecting plates and is located on one side of the first clamping block A. The first clamping driver is configured to drive the first clamping block A to move toward or away from the first clamping block B.

[0014] The stretching device includes a second connecting frame connected to the base, the second connecting frame including two spaced-apart second connecting plates, the second stretching clamp including a second clamping driver, a second clamping block A and a second clamping block B, the second clamping block A and the second clamping block B respectively disposed on opposite sides of the two second connecting plates, the second clamping driver connected to one of the second connecting plates and located on one side of the second clamping block A, the second clamping driver being configured to drive the second clamping block A to move toward or away from the second clamping block B.

[0015] According to the testing device provided in the embodiment of the present invention, the lower side of the first clamping block B is provided with a first support boss extending toward the first clamping block A, and the end of the first support boss toward the first clamping block A is provided with a first support groove. Along the direction from the first clamping block A toward the first clamping block B, the bottom wall of the first support groove protrudes beyond the outer wall of the first clamping block B.

[0016] And / or, the upper side of the second clamping block B is provided with a second support boss extending toward the second clamping block A, and the end of the second support boss facing the second clamping block A is provided with a second support groove. Along the direction from the second clamping block A toward the second clamping block B, the bottom wall of the second support groove protrudes from the outer wall of the second clamping block B.

[0017] The testing equipment provided according to the embodiments of the present invention further includes a waste recycling component, the waste recycling component including a first recycling nozzle and a second recycling nozzle, the first recycling nozzle being connected to the base and located on one side of the first tension clamp, the first recycling nozzle having a first negative pressure recycling channel extending toward the first tension clamp; the second recycling nozzle being connected to the slide table and located on one side of the second tension clamp, the second recycling nozzle having a second negative pressure recycling channel extending toward the second tension clamp.

[0018] According to the testing equipment provided in the embodiments of the present invention, the waste recycling component further includes a first adjusting member, which is connected to the first recycling nozzle and configured to drive the first recycling nozzle to move toward or away from the first tension clamp.

[0019] According to the testing equipment provided in the embodiments of the present invention, the twisting device further includes a second adjusting member, the rotating twisting assembly is connected to the slide table through the second adjusting member, and the second adjusting member is configured to drive the rotating twisting assembly to move toward or away from the first twisting fixture.

[0020] The present invention also proposes a control method applied to the test equipment provided in the embodiments of the present invention, characterized in that it includes:

[0021] Control the first twisting fixture to clamp the sample with the rotary twisting assembly;

[0022] The rotary twisting assembly is controlled to rotate in order to twist the sample;

[0023] The first stretching clamp and the second stretching clamp are controlled to clamp the sample, the first twisting clamp and the rotating twisting assembly are controlled to release the sample, and the lifting mechanism is controlled to drive the second stretching clamp to move away from the first stretching clamp until the sample breaks.

[0024] The present invention also proposes a fiber production equipment, including a testing device as shown in the embodiments of the present invention.

[0025] The testing equipment of this invention integrates the twisting device and the stretching device into the base, realizing the automation of twisting and stretching during fiber mechanical property testing. Compared with the existing manual step-by-step operation method, it eliminates the twisting force fluctuation and tension fluctuation caused by manual fiber transfer during twisting and stretching, significantly improving test repeatability and data accuracy. Furthermore, since the first twisting fixture, the first stretching fixture, the second stretching fixture, and the rotating twisting component are arranged at intervals from top to bottom, the twisting and stretching processes are completed synchronously on the same axis, effectively avoiding the positional deviation problem caused by multiple clamping in traditional methods, further enhancing the reliability of test results.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0028] Figure 1 A schematic diagram of the overall structure of the testing equipment provided in the embodiments of the present invention;

[0029] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0030] Figure 3 for Figure 1 Enlarged view of point B in the middle;

[0031] Figure 4 This is a schematic diagram of the overall structure of a testing device provided in another embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the first tension clamp and the second tension clamp provided in an embodiment of the present invention;

[0033] Figure 6 A flowchart of a control method provided in an embodiment of the present invention.

[0034] The attached icons are numbered as follows:

[0035] 100. Base; 110. Base plate; 120. Back plate;

[0036] 200. Twisting device; 210. First twisting clamp; 211. First twisting driver; 212. First connecting arm; 213. First clamping piece; 220. Rotary twisting assembly; 221. Rotary twisting driver; 222. Second connecting arm; 223. Second clamping piece; 230. Positioning groove; 240. Second adjusting member;

[0037] 300. Tensioning device; 310. Slide table; 320. Lifting mechanism; 330. First connecting frame; 340. First tensioning fixture; 341. First clamping driver; 342. First clamping block A; 343. First clamping block B; 344. First support boss; 345. First support groove; 350. Second tensioning fixture; 351. Second clamping driver; 352. Second clamping block A; 353. Second clamping block B; 354. Second support boss; 355. Second support groove; 360. Force sensor; 370. Second connecting frame;

[0038] 400, Waste recycling assembly; 410, First recycling nozzle; 420, Second recycling nozzle; 430, First adjusting component. Detailed Implementation

[0039] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0040] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0041] In the description of this invention, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0042] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0043] In related technologies, fibers, as fine filamentous materials whether natural or synthetic, are widely used in textiles, military, medical, and construction fields because their mechanical properties are a core indicator determining product reliability. Currently, the industry commonly uses a quasi-static tensile testing method performed manually. This method is cumbersome and highly dependent on manual labor.

[0044] Manual cutting and fixing: The operator needs to manually cut a fixed length of fiber bundle;

[0045] Manual twisting: Fix the two ends of the cut bundle of filaments onto the two jaws of the twist meter, and manually operate the twist meter to apply and fix the bundle of filaments to the preset twist;

[0046] Transfer and clamping: Remove the twisted bundle of yarn from the twist meter, then manually wind and fix it onto the pneumatic clamp of the universal testing machine (or universal tensile testing machine);

[0047] Manual test: The operator controls the pneumatic clamp to close and tighten the bundle of wires by using a foot pedal, and then starts the testing machine to perform a quasi-static tensile test at a constant speed.

[0048] Because this method requires manual operation of twisting, transferring, and re-clamping, problems such as positional deviation, twisting force fluctuation, and tension fluctuation are prone to occur during operation, resulting in poor repeatability and low accuracy of test results.

[0049] To address the aforementioned problems, embodiments of the present invention provide a testing device. The specific structure and function of the testing device provided in the embodiments of the present invention will be further described below with reference to the text and accompanying drawings.

[0050] Reference Figure 1 The testing equipment provided according to the embodiments of the present invention includes: a base 100, a twisting device 200, a stretching device 300, and a controller. The twisting device 200 and the stretching device 300 are both integrated on the base 100 and controlled by the controller, thereby enabling the automation of twisting and stretching.

[0051] Reference Figure 1In some embodiments, the base 100 includes a base plate 110 and a back plate 120. The upper surface of the base plate 110 is flat, and the lower end of the back plate 120 is connected to the upper surface of the base plate 110, while the upper end extends upward. The back plate 120 is perpendicular to the upper surface of the base plate 110, facilitating the vertically spaced installation of the twisting device 200 and the stretching device 300 on the front side of the back plate 120. The twisting device 200 includes a first twisting clamp 210 and a rotating twisting assembly 220. The top of the back plate 120 is provided with a forward-extending L-shaped fixing frame. The first twisting clamp 210 is connected to the back plate 120 through the L-shaped fixing frame, and the rotating twisting assembly 220 is located below the first twisting clamp 210. When twisting the sample, the first twisting clamp 210 and the rotating twisting assembly 220 clamp the upper and lower ends of the sample, and then the rotating twisting assembly 220 can drive the sample to rotate, thereby twisting the sample. The tensioning device 300 includes a slide table 310, a lifting mechanism 320, a first connecting frame 330, a first tensioning clamp 340, a second tensioning clamp 350, and a force sensor 360. The first tensioning clamp 340 is mounted on a back plate 120 via the first connecting frame 330. The upper end of the back plate 120 has a forward-extending top plate. The upper end of the force sensor 360 is mounted on the lower side of the top plate, and the lower end is connected to the first connecting frame 330. The force sensor 360 is located on the force transmission path between the first connecting frame 330 and the back plate 120 to monitor the load on the first tensioning clamp 340 in real time. The rear side of the lifting mechanism 320 is fixed to the front side of the back plate 120. The front side of the slide table 310 has a mounting plane, and the rear side is connected to the front side of the lifting mechanism 320. The lifting mechanism 320 can drive the slide table 310 to achieve vertical movement of the slide table 310. The rotary twisting assembly 220 is mounted on the mounting plane in front of the slide table 310, and the second tension clamp 350 is also mounted on the mounting plane in front of the slide table 310. Specifically, the first twisting clamp 210, the first tension clamp 340, the second tension clamp 350, and the rotary twisting assembly 220 are all located in front of the back plate 120 and are arranged vertically from top to bottom at intervals, thus forming a vertically integrated testing station. The first twisting clamp 210, the rotary twisting assembly 220, the lifting mechanism 320, the first tension clamp 340, the second tension clamp 350, and the force sensor 360 are all electrically connected to the controller. During operation, the sample is clamped between the first twisting fixture 210 and the rotary twisting assembly 220, and the rotary twisting assembly 220 is controlled to rotate to twist the sample. Then, the first stretching fixture 340 and the second stretching fixture 350 clamp the sample, and the first twisting fixture 210 and the rotary twisting assembly 220 release the sample. The lifting mechanism 320 drives the slide 310 to lower the second stretching fixture 350, thereby stretching the sample clamped between the first stretching fixture 340 and the second stretching fixture 350 until it breaks. During the stretching process, the force sensor 360 detects the force acting on the first stretching fixture 340 in real time, thereby obtaining the force situation on the sample.

[0052] Optionally, a reinforcing plate is provided on the rear side of the back plate 120, and the lower end of the reinforcing plate is connected to the upper end face of the base plate 110, thereby improving the connection strength between the back plate 120 and the base plate 110. The lifting mechanism 320 can be a linear motor module or a lifting platform composed of cylinders, electric push rods, or other plate components; the force sensor 360 can be a tension sensor 360, etc., and the specific design can be determined according to the application requirements.

[0053] The testing equipment of this invention integrates the twisting device 200 and the stretching device 300 into the base 100, realizing the automation of twisting and stretching actions during fiber mechanical property testing. Compared with the existing manual step-by-step operation method, it can eliminate the twisting force fluctuation and tension fluctuation caused by manual fiber transfer, significantly improving test repeatability and data accuracy. Furthermore, since the first twisting clamp 210, the first stretching clamp 340, the second stretching clamp 350 and the rotating twisting component 220 are arranged at intervals from top to bottom, the twisting and stretching processes are completed synchronously on the same axis, effectively avoiding the positional deviation problem caused by multiple clamping, and further enhancing the reliability of the test results.

[0054] Reference Figure 4 In some embodiments, the testing equipment also includes a waste recycling component 400, which is used to immediately remove waste filaments remaining in the first stretching clamp 340 and the second stretching clamp 350 after fiber breakage, avoiding manual intervention and realizing full automation of the "twisting-stretching-waste filament recycling" process.

[0055] Reference Figure 4 In some embodiments, the waste recycling assembly 400 includes a first recycling nozzle 410, a second recycling nozzle 420, a matching negative pressure source, and flexible piping. The first recycling nozzle is fixed to the back plate 120 by an L-shaped bracket and is located on the side of the first tension clamp 340. The second recycling nozzle 420 is fixed to the slide table 310 by an L-shaped bracket and is located on one side of the second tension clamp 350. The first recycling nozzle 410 is generally circular and has a first negative pressure recycling channel extending toward the first tension clamp 340 in the middle. The second recycling nozzle 420 is generally circular and has a second negative pressure recycling channel extending toward the second tension clamp 350. The first and second negative pressure recycling channels are connected to the matching negative pressure source through flexible piping. When the sample breaks between the first tension clamp 340 and the second tension clamp 350, the negative pressure source is activated to create negative pressure in the first negative pressure recovery channel and the second negative pressure recovery channel, thereby sucking in the broken sample on the first tension clamp 340 and the second tension clamp 350 respectively. Then the first tension clamp 340 and the second tension clamp 350 release the broken sample, and the sample can be recovered into the flexible pipeline.

[0056] Optionally, the waste recycling assembly 400 also includes a waste recycling bag connected to a flexible pipeline. During the recycling process, samples in the first negative pressure recycling channel and the second negative pressure recycling channel can fall into the waste recycling bag through the flexible pipeline, thereby facilitating centralized processing of the samples.

[0057] Reference Figure 4 In some embodiments, the waste recycling assembly 400 further includes a first adjusting member 430, which is electrically connected to the controller and connected to the back plate 120 via an L-shaped bracket. A first recycling nozzle 410 is connected to the front side of the first adjusting member 430. The first adjusting member 430 can drive the first recycling nozzle 410 to move toward or away from the first tensile clamp 340, so that the first negative pressure recycling channel can better pick up the broken sample on the first tensile clamp 340.

[0058] Optionally, the first adjusting element 430 can be an electric actuator, a cylinder, etc., and its specific style can be determined according to actual needs.

[0059] Reference Figure 1 and Figure 3 In some embodiments, the twisting device 200 further includes a second adjusting member 240, which is electrically connected to the controller and connected to the slide table 310 at its rear via fasteners. A rotating twisting assembly 220 is connected to the lower end of the second adjusting member 240, and the second adjusting member 240 can drive the rotating twisting assembly 220 to move toward or away from the first twisting clamp 210. During use, after clamping the sample between the first twisting clamp 210 and the rotating twisting assembly 220, the second adjusting member 240 can drive the rotating twisting assembly 220 to move toward or away from the first twisting clamp 210, thereby adjusting the sample tension. This ensures that even with high-elasticity or low-modulus fibers, the fibers are prevented from being overstretched or loosened during twisting, thus improving the applicable fiber range of the testing equipment. In addition, the second adjusting member 240 can adjust the tension of the sample during twisting while adjusting the sample tension, thereby adjusting the twisting force during the twisting process. This is beneficial for the same twisting force to be consistent in each tensile test of the same sample, which significantly improves the repeatability and accuracy of the test results.

[0060] Optionally, the second adjusting component 240 can be an intelligent electric actuator, a cylinder, etc., and its specific style can be determined according to actual needs. In practical applications, for example, when the second adjusting component 240 is a cylinder, control can be achieved by controlling the solenoid valve connected to the cylinder; or, for example, when the second adjusting component 240 is an intelligent electric actuator, the intelligent electric actuator can integrate displacement sensors, thrust sensors, etc., to facilitate adjustment of corresponding values ​​during testing. In addition, the rotary twisting assembly 220 can integrate rotation sensor, torque sensor, etc., so that the twist of the sample can be determined by the torque and the number of rotations of the rotary twisting assembly 220 during testing.

[0061] It should be noted that during the twisting process, the sample changes from a vertically hanging state to a spiral state, which will cause the sample length to shorten and the tension in the vertical direction to increase. In order to solve this problem, the second adjusting component 240 can drive the rotating twisting component 220 to rise during twisting, thereby reducing the tension in the vertical direction of the sample.

[0062] Reference Figure 1 and Figure 2 In some embodiments, the first twisting clamp 210 includes a first twisting driver 211, two first connecting arms 212, and two first clamping plates 213. The first twisting driver 211 may be a bidirectional lead screw assembly, a bidirectional cylinder assembly, etc. The two first connecting arms 212 are connected to the first twisting driver 211, and the two first clamping plates 213 are arranged vertically and respectively connected to opposite sides of the two first connecting arms 212. When the first twisting driver 211 drives the two first connecting arms 212 to move, the two first clamping plates 213 open and close symmetrically, which facilitates quick clamping of samples.

[0063] Optionally, the two first connecting arms 212 are combined to form a hollow and horizontally arranged frame structure, so that an opening is formed between the two first connecting arms 212. The first connecting frame 330 includes a hanger rod, the upper end of which is connected to the top plate through a force sensor 360, and the lower end extends downward through the opening. The first tension clamp 340 is fixed to the lower end of the hanger rod, thereby forming a compact layout of the first tension clamp 340 under the first twisting clamp 210, which is beneficial to improving the compactness of the structure.

[0064] Reference Figure 2 In some embodiments, the two first clamping pieces 213 are respectively horizontally rotatably connected to the two first connecting arms 212. During the clamping process, the two first clamping pieces 213 can rotate horizontally within a small range, so that the two clamping surfaces of the two first clamping pieces 213 can fit together better, thereby improving the reliability of clamping.

[0065] Reference Figure 1 and Figure 3In some embodiments, the rotary twisting assembly 220 includes a rotary twisting driver 221, two second connecting arms 222 and two second clamps 223. The two second connecting arms 222 are connected to the rotary twisting driver 221 and extend upward. The rotary twisting driver can drive the two second connecting arms 222 to open and close symmetrically, and drive the two second connecting arms 222 to rotate.

[0066] Optionally, the rotary twisting driver 221 can be an electric rotary gripper, and the two second connecting arms 222 can be an integral part of the electric rotary gripper or an additional structure mounted on the electric rotary gripper, which can be determined according to actual needs.

[0067] Reference Figure 3 In some embodiments, the two second clamping pieces 223 are vertically rotatably connected to the two second connecting arms 222 respectively. During the clamping process, the two second clamping pieces 223 can rotate vertically within a small range, so that the two clamping surfaces of the two second clamping pieces 223 can fit together well, thereby improving the reliability of clamping.

[0068] Reference Figure 1 and Figure 2 In some embodiments, at least one first clamping piece 213 has a positioning groove 230 at its upper end and / or at least one second clamping piece 223 has a lower end. The positioning groove 230 is approximately "V" shaped, allowing the sample to be gently placed into the positioning groove 230 for positioning during sample clamping. Furthermore, the groove wall of the positioning groove 230 transitions with the planar arc of the first clamping piece 213 and the second clamping piece 223 to prevent bending or shearing damage to the fibers during clamping.

[0069] In some embodiments, the upper end of the first clamping piece 213 and the lower end of the second clamping piece 223 are both provided with positioning grooves 230. During the clamping process, the sample can be positioned according to the positioning grooves 230 on the first clamping piece 213 and the second clamping piece 223. The self-centering effect of the grooves allows the sample to slide naturally toward the clamping center, so that the upper and lower ends of the sample can be on the same vertical line, avoiding the eccentricity error caused by manual visual alignment, thereby avoiding the phenomenon that the test results are affected by the transverse shear force due to the tilt of the sample during the stretching process.

[0070] Reference Figure 1 and Figure 2In some embodiments, the first connecting frame 330 includes, in addition to the lifting rod, two first connecting plates spaced apart at the lower end of the lifting rod, forming a clamping groove between the two first connecting plates. The first tension clamp 340 includes a first clamping driver 341, a first clamping block A342, and a first clamping block B343. The first clamping block A342 and the first clamping block B343 are respectively disposed on opposite sides of the clamping groove, and the opposite surfaces of the first clamping block A342 and the first clamping block B343 are clamping planes. The driver 341 is connected to one of the first connecting plates and is located on one side of the first clamping block A342. The first clamping block A342 is connected to the drive rod of the first clamping driver 341. The first clamping block B343 is fixed to the inner wall of the clamping groove by fasteners. The drive rod of the first clamping driver 341 can drive the first clamping block A342 to move toward or away from the first clamping block B343 so that the clamping planes of the first clamping block A342 and the first clamping block B343 are in contact or separated, thereby clamping the sample.

[0071] Optionally, when the clamping planes of the first clamping block A342 and the first clamping block B343 are in contact, the contact area of ​​the first clamping block A342 and the first clamping block B343 is relatively large, which can clamp the sample better. The first clamping actuator 341 can be a cylinder, electric actuator, etc., and its specific structure can be set according to actual needs.

[0072] Reference Figure 1 and Figure 3 In some embodiments, the tensioning device 300 includes a second connecting frame 370 connected to the back plate 120. The second connecting frame 370 includes a mounting platform connected to the slide table 310 and two second connecting plates spaced apart on the mounting platform. A clamping groove is also formed between the two second connecting plates. The second tensioning fixture 350 includes a second clamping driver 351, a second clamping block A 352, and a second clamping block B 353. The second clamping block A 352 and the second clamping block B 353 are respectively disposed on opposite sides of the clamping groove. The opposite surfaces of 53 are also clamping planes. The second clamping driver 351 is connected to one of the second connecting plates and is located on one side of the second clamping block A352. The second clamping block A352 is connected to the drive rod of the second clamping driver 351. The second clamping block B353 is fixed to the inner wall of the clamping groove by fasteners. The drive rod of the second clamping driver 351 can drive the second clamping block A352 to move toward or away from the second clamping block B353, so that the clamping planes of the second clamping block A352 and the second clamping block B353 fit together or separate, thereby clamping the sample.

[0073] Optionally, when the clamping planes of the second clamping block A352 and the first clamping block B343 are in contact, the contact area of ​​the second clamping block A352 and the first clamping block B343 is relatively large, which can better clamp the sample. The second clamping actuator 351 can be a cylinder, electric actuator, etc., and its specific structure can be set according to actual needs.

[0074] It should be noted that in practical applications, since the first twisting clamp 210, the first tensile clamp 340, the second tensile clamp 350 and the rotating twisting assembly 220 are arranged vertically from top to bottom, the clamping of the first tensile clamp 340 and the second tensile clamp 350 also extends vertically. During the process of the lifting mechanism 320 driving the second tensile clamp 350 to stretch, the sample is subjected to a large shear force at the clamping points of the first clamping block A342 and the first clamping block B343, as well as at the clamping points of the second clamping block A352 and the second clamping block B353, which will affect the test accuracy to a certain extent.

[0075] To solve this problem, refer to Figure 2 and Figure 5 In some embodiments, the lower side of the first clamping block B343 is provided with a first support boss 344 extending toward the first clamping block A342. One end of the first support boss 344 facing the first clamping block A342 is provided with a vertically arranged first support groove 345. Along the direction from the first clamping block A342 toward the first clamping block B343, the bottom wall of the first support groove 345 protrudes beyond the clamping surface of the first clamping block B343. There is a height difference between the bottom wall of the first support groove 345 and the clamping surface of the first clamping block B343. The bottom wall of 45 is connected to the first clamping block B343 through an arc transition surface. When the first clamping block A342 and the first clamping block B343 are in contact to clamp the sample, the sample is inserted into the first support groove 345. Since there is a drop between the bottom wall of the first support groove 345 and the clamping surface of the first clamping block B343, the sample will extend along the arc transition surface, thus extending in a curved shape at the drop point. This can change the direction of the force on the sample during the stretching process and avoid the phenomenon that the shear force on the sample is too large during the stretching process, which affects the test accuracy.

[0076] Optionally, the first support boss 344 and the first clamping block B343 can be an integrally formed structure or a separate connected structure, which can be set according to actual needs.

[0077] Reference Figure 3 and Figure 5In some embodiments, the upper side of the second clamping block B353 is provided with a second support boss 354 extending toward the second clamping block A352. One end of the second support boss 354 facing the second clamping block A352 is provided with a vertically arranged second support groove 355. Along the direction from the second clamping block A352 toward the second clamping block B353, the bottom wall of the second support groove 355 protrudes beyond the clamping surface of the second clamping block B353. There is a height difference between the bottom wall of the second support groove 355 and the clamping surface of the second clamping block B353. The bottom wall of the second clamping block 355 is connected to the second clamping block B353 by an arc transition surface. When the second clamping block A352 and the second clamping block B353 are in contact to clamp the sample, the sample is inserted into the second support groove 355. Since there is a drop between the bottom wall of the second support groove 355 and the clamping surface of the second clamping block B353, the sample will extend along the arc transition surface, thus extending in a curved shape at the drop point. This can change the direction of the force on the sample during the stretching process and avoid the phenomenon that the shear force on the sample is too large during the stretching process, which affects the test accuracy.

[0078] Optionally, the second support boss 354 and the second clamping block B353 can be an integrally formed structure or a separate connected structure, which can be set according to actual needs.

[0079] In some embodiments, the upper end of the first clamping piece 213 and the lower end of the second clamping piece 223 are both provided with positioning grooves 230. The lower side of the first clamping block B343 is provided with a first support boss 344 and a first support groove 345, and the upper side of the second clamping block B353 is provided with a second support boss 354 and a second support groove 355. From the vertical direction, the positioning groove 230, the first support groove 345, the second support groove 355 at the upper end of the first clamping piece 213 and the positioning groove 230 at the lower end of the second clamping piece 223 are on the same vertical line, so that after twisting, when the first stretching clamp 340 and the second stretching clamp 350 are clamped, the sample can be accurately inserted into the first support groove 345 and the second support groove 355.

[0080] Optionally, the testing equipment can also integrate a display, input devices, etc. The display, input devices, first twisting clamp 210, rotary twisting assembly 220, lifting mechanism 320, first tension clamp 340, second tension clamp 350, force sensor 360, first adjustment component 430 and second adjustment component 240, etc., and all components that need to be controlled, can detect data or have display functions are electrically connected to the controller.

[0081] Reference Figure 6According to the control method provided in the embodiments of the present invention, it is applied to a testing device. The testing device includes: a base 100, a twisting device 200, a stretching device 300, and a waste recycling assembly 400. The base 100 includes a base plate 110 and a back plate 120, with the back plate 120 vertically disposed on the upper side of the base plate 110. The twisting device 200 includes a first twisting clamp 210 and a rotating twisting assembly 220. The first twisting clamp 210 is connected to the back plate 120, and the rotating twisting assembly 220 is disposed below the first twisting clamp 210. The stretching device 300 includes a slide 310, a lifting mechanism 320, a first connecting frame 330, a first stretching clamp 340, a second stretching clamp 350, and a force sensor 360. The slide 310 is connected to the lifting mechanism 320, and the lifting mechanism 320 is connected to the back plate 120 and configured to drive the slide 310 to move up and down. The rotating twisting assembly 400... The component 220 is connected to the slide table 310. The first tension clamp 340 is connected to the back plate 120 through the first connecting frame 330. The force sensor 360 is located between the first connecting frame 330 and the back plate 120 and is configured to detect the force on the first tension clamp 340. The second tension clamp 350 is connected to the slide table 310. In the vertical direction, the first twisting clamp 210, the first tension clamp 340, the second tension clamp 350 and the rotating twisting component 220 are arranged at intervals from top to bottom. The waste recycling component 400 includes a first recycling nozzle 410 and a second recycling nozzle 420. The first recycling nozzle 410 is connected to the back plate 120 and is located on one side of the first tension clamp 340. The second recycling nozzle 420 is connected to the slide table 310 and is located on one side of the second tension clamp 350. Both the first recycling nozzle 410 and the second recycling nozzle 420 are provided with negative pressure recycling channels.

[0082] Control methods include:

[0083] S100: Control the first twisting clamp 210 and the rotating twisting assembly 220 to clamp the sample;

[0084] Specifically, the operator or robotic arm places the sample between the first twisting clamp 210 and the rotating twisting component 220, and the first twisting clamp 210 and the rotating twisting component 220 work together to clamp the sample.

[0085] S200: Controls the rotation of the rotary twisting assembly 220 to twist the sample;

[0086] Specifically, after the first twisting clamp 210 and the rotating twisting assembly 220 clamp the sample, the rotating twisting assembly 220 below is controlled to rotate, thereby twisting the sample. Furthermore, considering that the sample length will shorten and the vertical tension will increase when it changes from a vertically hanging state to a spiral state during twisting, the second adjusting member 240 can be controlled to raise the rotating twisting assembly 220 simultaneously, thereby reducing the vertical tension on the sample.

[0087] S300: Control the first tensile clamp 340 and the second tensile clamp 350 to clamp the sample, control the first twisting clamp 210 and the rotating twisting component 220 to release the sample, and control the lifting mechanism 320 to drive the second tensile clamp 350 to move away from the first tensile clamp 340 until the sample breaks.

[0088] Specifically, after twisting is completed, the first stretching clamp 340 and the second stretching clamp 350 are first controlled to clamp the sample. Then, the first twisting clamp 210 and the rotating twisting assembly 220 are controlled to release both ends of the sample. Next, the lifting mechanism 320 is controlled to lower the second stretching clamp 350 to stretch the product until it breaks. Throughout the stretching process, the force sensor 360 can detect the force acting on the first stretching clamp 340 in real time, thus obtaining relatively accurate test data.

[0089] Optionally, the control methods also include:

[0090] S400: Control the first recovery air nozzle 410 and the second recovery air nozzle 420 to adsorb the sample, and control the first tension clamp 340 and the second tension clamp 350 to release the sample.

[0091] Specifically, after the sample breaks, the negative pressure source is activated to create negative pressure in the first negative pressure recovery channel and the second negative pressure recovery channel, thereby sucking in the broken sample from the first tensile clamp 340 and the second tensile clamp 350 respectively. Then, the first tensile clamp 340 and the second tensile clamp 350 release the broken sample, and the sample is recovered into the flexible pipeline to facilitate the subsequent centralized processing of the broken sample.

[0092] According to the control method provided in the second aspect of the present invention, by controlling the first twisting fixture 210, the first stretching fixture 340, the second stretching fixture 350, and the rotating twisting assembly 220, the entire process of "twisting-stretching-waste fiber recycling" in the fiber mechanical property testing process can be automated. Both the rotating twisting assembly 220 and the second stretching fixture 350 are mounted on a slide table 310 driven by the lifting mechanism 320. This allows them to remain relatively stationary with respect to the first twisting fixture 210 during the twisting stage, and to complete the fracture test by moving downwards with the slide table 310 during the stretching stage. This eliminates the need for manual transfer of fiber bundles, thus removing positional deviations, twist fluctuations, and tension fluctuations caused by traditional manual operation, significantly improving test repeatability and accuracy.

[0093] The fiber production equipment provided according to the embodiments of the present invention includes the testing equipment shown in the embodiments of the present invention, and the fiber production equipment has all the beneficial effects of the embodiments of the present invention.

[0094] Of course, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention. All such equivalent modifications or substitutions are included within the scope defined by the claims of this application.

Claims

1. A testing device, characterized in that, include: Base (100); The twisting device (200) includes a first twisting clamp (210) and a rotating twisting assembly (220), wherein the first twisting clamp (210) is connected to the base (100), and the rotating twisting assembly (220) is disposed below the first twisting clamp (210); The stretching device (300) includes a slide (310), a lifting mechanism (320), a first connecting frame (330), a first stretching clamp (340), a second stretching clamp (350), and a force sensor (360). The slide (310) is connected to the lifting mechanism (320), and the lifting mechanism (320) is connected to the base (100) and configured to drive the slide (310) to move up and down. The rotary twisting assembly (220) is connected to the slide (310). The first stretching clamp (340) is connected to the base (100) through the first connecting frame (330). The force sensor (360) is disposed between the first connecting frame (330) and the base (100) and configured to detect the force on the first stretching clamp (340). The second stretching clamp (350) is connected to the slide (310). The controller, the first twisting clamp (210), the rotary twisting assembly (220), the lifting mechanism (320), the first tension clamp (340), the second tension clamp (350) and the force sensor (360) are all electrically connected to the controller; In the vertical direction, the first twisting clamp (210), the first stretching clamp (340), the second stretching clamp (350) and the rotating twisting assembly (220) are arranged at intervals from top to bottom; The first twisting clamp (210) includes a first twisting driver (211), two first connecting arms (212) and two first clamping plates (213). The two first connecting arms (212) are connected to the first twisting driver (211), and the two first clamping plates (213) are respectively horizontally rotatably connected to the two opposing sides of the two first connecting arms (212). The first twisting driver (211) is configured to drive the two first connecting arms (212), thereby causing the two first clamping plates (213) to move towards or away from each other. The rotary twisting assembly (220) includes a rotary twisting driver (221), two second connecting arms (222), and two second clamps (223). The two second connecting arms (222) are connected to the rotary twisting driver (221), and the two second clamps (223) are vertically rotatably connected to opposite sides of the two second connecting arms (222). The rotary twisting driver (221) is configured to drive the two second connecting arms (222) to rotate and to drive the two second clamps (223) to move towards or away from each other. The testing equipment also includes a waste recycling component (400), which includes a first recycling nozzle (410) and a second recycling nozzle (420). The first recycling nozzle (410) is connected to the base (100) and located on one side of the first tension clamp (340). The first recycling nozzle (410) is provided with a first negative pressure recycling channel extending toward the first tension clamp (340). The second recycling nozzle (420) is connected to the slide (310) and located on one side of the second tension clamp (350). The second recycling nozzle (420) is provided with a second negative pressure recycling channel extending toward the second tension clamp (350).

2. The testing equipment according to claim 1, characterized in that, A positioning groove (230) is provided at the upper end of at least one of the first clips (213) and / or at the lower end of at least one of the second clips (223).

3. The testing equipment according to claim 1, characterized in that, The first connecting frame (330) includes a rod and two spaced-apart first connecting plates. The upper end of the rod is connected to the base (100) via the force sensor (360). The first tension clamp (340) includes a first clamping driver (341), a first clamping block A (342), and a first clamping block B (343). The first clamping block A (342) and the first clamping block B (343) are respectively located on opposite sides of the two first connecting plates. The first clamping driver (341) is connected to one of the first connecting plates and is located on one side of the first clamping block A (342). The first clamping driver (341) is configured to drive the first clamping block A (342) to move toward or away from the first clamping block B (343). The stretching device (300) includes a second connecting frame (370) connected to the base (100). The second connecting frame (370) includes two spaced-apart second connecting plates. The second stretching clamp (350) includes a second clamping driver (351), a second clamping block A (352), and a second clamping block B (353). The second clamping block A (352) and the second clamping block B (353) are respectively disposed on opposite sides of the two second connecting plates. The second clamping driver (351) is connected to one of the second connecting plates and is located on one side of the second clamping block A (352). The second clamping driver (351) is configured to drive the second clamping block A (352) to move toward or away from the second clamping block B (353).

4. The testing equipment according to claim 3, characterized in that, The lower side of the first clamping block B (343) is provided with a first support boss (344) extending toward the first clamping block A (342). The first support boss (344) is provided with a first support groove (345) at one end toward the first clamping block A (342). Along the direction from the first clamping block A (342) toward the first clamping block B (343), the bottom wall of the first support groove (345) protrudes from the outer wall of the first clamping block B (343). And / or, the upper side of the second clamping block B (353) is provided with a second support boss (354) extending toward the second clamping block A (352), and the end of the second support boss (354) toward the second clamping block A (352) is provided with a second support groove (355). Along the direction from the second clamping block A (352) toward the second clamping block B (353), the bottom wall of the second support groove (355) protrudes from the outer wall of the second clamping block B (353).

5. The testing equipment according to claim 1, characterized in that, The waste recycling assembly (400) further includes a first adjusting member (430), which is connected to the first recycling nozzle (410) and configured to move the first recycling nozzle (410) toward or away from the first tension clamp (340).

6. The testing equipment according to any one of claims 1 to 5, characterized in that, The twisting device (200) further includes a second adjusting member (240), the rotary twisting assembly (220) is connected to the slide table (310) via the second adjusting member (240), and the second adjusting member (240) is configured to drive the rotary twisting assembly (220) to move toward or away from the first twisting fixture (210).

7. A control method applied to the test equipment as described in any one of claims 1 to 6, characterized in that, The control method includes: Control the first twisting clamp (210) to clamp the sample with the rotary twisting assembly (220); The rotary twisting assembly (220) is controlled to rotate to twist the sample; Control the first stretching clamp (340) and the second stretching clamp (350) to clamp the sample, control the first twisting clamp (210) and the rotating twisting assembly (220) to release the sample, control the lifting mechanism (320) to drive the second stretching clamp (350) to move away from the first stretching clamp (340) until the sample breaks.

8. A fiber production equipment, characterized in that, Includes the test equipment as described in any one of claims 1 to 6.

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