A new material of acrylic yarn strength testing device

Abstract

The application discloses a new material yarn strength testing device, and relates to the technical field of new material detection.The device comprises a vertical plate and a grabbing assembly.A storage rod is arranged at a corner of the vertical plate, and a damping roller is arranged on the upper part of one side of the vertical plate.A limiting ring is arranged below the damping roller, and the limiting ring is fixedly connected with the vertical plate.The device can realize full-automatic feeding and positioning of the new material acrylic yarn.During the process, the grabbing assembly can automatically avoid collision in movement through the cooperation of the baffle inclined surface and the pulley seat.Meanwhile, the clamping and releasing of the yarn can be automatically completed with the aid of a mechanical trigger mechanism, and no additional electric control components are needed, so that the system is simplified, the cost is reduced, and the damping roller can cooperate with the clamping action to keep the yarn in a constant tension and flat state before testing.Through the cooperative design of the groove of the positioning plate and the clamping position, the yarn can be placed vertically, regularly and fixedly in the testing station.

Description

Technical Field

[0001] This invention relates to the field of new material testing technology, specifically to a device for testing the strength of acrylic fiber yarn. Background Technology

[0002] Acrylic fiber yarn is a new generation of synthetic fiber yarn developed by using polyacrylonitrile as the main raw material through structural modification, functional enhancement, or process innovation. It expands application scenarios and meets the needs of high-end textiles and functional clothing. During the production of acrylic fiber yarn, its strength needs to be tested.

[0003] For example, the invention disclosed in CN114659896A is a strength testing device for flax yarn. This invention can quickly clamp and fix the yarn, avoiding the need for winding or knotting to fix the yarn, thus preventing damage to the connection and breakage. At the same time, it can perform continuous testing of the yarn, improving testing efficiency. However, in actual use, this type of device requires first magnetically clamping the yarn and then winding it around the outside of the winding rod for fixation. After the yarn is wound and fixed, it is easy for it to become skewed on both sides, causing the yarn to bear lateral force during the stretching process, which cannot be in a pure axial force state. The test results cannot truly reflect the axial tensile strength of the yarn. In addition, the yarn wrapped around the outside of the winding rod will also deform under the action of tension during the stretching process, which will not only change the effective test length of the yarn, but also make it impossible to ensure that the effective length remains consistent across multiple tests, ultimately making it difficult to guarantee the test accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a device for testing the strength of acrylic yarn, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for testing the strength of acrylic yarn, comprising a vertical plate and a gripping assembly. A placement rod is mounted on one corner of the vertical plate, and a damping roller is mounted on the upper part of one side of the vertical plate. A limit ring is mounted below the damping roller and is fixedly connected to the vertical plate. A slide block is slidably connected to the middle of the vertical plate, and positioning plates are mounted on both the slide block and one side of the vertical plate. The gripping assembly is located in the middle of the vertical plate and includes a linear module. A drive block is threadedly connected to the outer side of the screw of the linear module, and one side of the drive block is fixed. A fixed rod is provided, with a return spring sleeved on the outer side of the fixed rod. One end of the return spring abuts against a sliding frame. A fixed clamping plate is fixed to one end of the sliding frame, and a movable clamping plate is slidably connected inside the sliding frame. A top rod is fixed to the middle of the movable clamping plate, and a positioning spring is sleeved on the outer side of one end of the top rod. A sliding column is installed at one end of the top rod, and a slotted plate is slidably connected to the outer side of the sliding column. A first stop is fixed to the lower middle part of one side of the vertical plate, and a second stop is installed to the upper middle part of one side of the vertical plate. A pulley seat is fixed to one side of the sliding frame, and a baffle is provided above the pulley seat.

[0006] Furthermore, the groove on the inner side of the slotted plate is J-shaped, and the slotted plate is slidably connected to the sliding frame.

[0007] Furthermore, the baffle is in the shape of an isosceles trapezoid and is fixedly connected to the vertical plate.

[0008] Furthermore, a clamping assembly is connected to the other side of the linear module, and the clamping assembly includes a guide plate. The guide plate is fixed to the other side of the linear module, and a guide groove is opened on one side of the guide plate. A roller seat is slidably connected inside the guide groove, and a horizontal toothed plate is fixed to one side of the roller seat. A gear shaft is meshed on one side of the horizontal toothed plate, and a bevel gear sleeve is slidably connected to the upper outer side of the gear shaft. A bevel gear is meshed on one side of the bevel gear, and a first side gear is fixed to one end of the bevel gear. A second side gear abuts on one side of the first side gear, and a transmission column is fixed to one side of the second side gear. A compression spring is sleeved on the outer side of the transmission column, and one end of the compression spring abuts against a positive and negative threaded screw. Anti-slip clamps are threaded to the outer sides of both ends of the positive and negative threaded screws, and a limit frame is slidably connected to the outer side of the anti-slip clamps.

[0009] Furthermore, the roller seat is slidably connected to the vertical plate, and the vertical plate is rotatably connected to the gear shaft, with the upper part of the gear shaft being prismatic.

[0010] Furthermore, the transmission column is prismatic in shape and is slidably connected to the positive and negative threaded screws.

[0011] Furthermore, a tension sensor is fixed to the upper part of the other side of the vertical plate, and a light rod is installed at the lower part of the vertical plate. A support spring is sleeved on the outer side of the light rod, and the light rod is slidably connected to the slide block.

[0012] Furthermore, the limiting frame is rotatably connected to the positive and negative thread screw, the first side gear and the bevel gear sleeve respectively, and there are two limiting frames. The upper and lower limiting frames are fixedly connected to the tension sensor and the slide respectively.

[0013] Furthermore, a recycling component is provided at the lower part of the vertical plate, and the recycling component includes a vertical toothed plate. A vertical toothed plate is installed at the lower part of one side of the slide, and a rotating shaft is rotatably connected to the lower part of the vertical plate. One end of the rotating shaft is connected to a transmission gear through a one-way bearing, and a speed-increasing gear set is fixed at the other end of the rotating shaft. A rubber-coated roller is connected to the upper part of the speed-increasing gear set, and a scraper is abutted against the bottom of the rubber-coated roller. A collection box is fixed at one end of the scraper.

[0014] Furthermore, the number of the rubber-coating rollers is set to two, and the rubber-coating rollers are rotatably connected to the vertical plate.

[0015] This invention provides a device for testing the strength of acrylic fiber yarn, which has the following advantages: 1. This invention enables fully automated feeding and positioning of acrylic fiber yarn. During this process, the purely mechanical structure of the baffle inclined surface and pulley seat allows the gripping component to automatically avoid collisions during movement. At the same time, the mechanical triggering mechanism can automatically complete the clamping and release of the yarn without the need for additional electrical control components, simplifying the system and reducing costs. Furthermore, the damping roller can cooperate with the clamping action to keep the yarn in a constant tension and straight state before testing. Through the coordinated design of the positioning plate groove and the clamping position, the yarn can be placed vertically, neatly, and in a fixed position at the testing station, eliminating the impact of skew and twisting on accuracy from the root and ensuring that the effective length of each test is consistent, significantly improving the parallelism and data reliability of multiple sets of tests.

[0016] 2. This invention enables automatic clamping, tensile testing, and unloading of yarn. Through a guide groove structure, the vertical movement of the drive block is mechanically converted into horizontal movement. Then, through multi-stage gear transmission, two sets of anti-slip clamps move synchronously in opposite directions, automatically clamping and fixing the yarn, thus improving automation. Simultaneously, the transmission mechanism includes a torque overload protection structure to prevent excessive clamping force from damaging the yarn and ensure consistent clamping force each time. After clamping, the drive block directly moves the slide downwards, stretching the yarn. No additional drive structure is needed; the critical tensile force data at yarn breakage can be accurately collected through a tension sensor. After testing, each mechanism automatically releases the yarn during the drive block reset process, and the broken yarn automatically falls and is collected, achieving automated testing cycles and adapting to the needs of large-scale continuous testing.

[0017] 3. This invention effectively solves the problem of yarn adhesion and achieves automatic waste collection. By reusing the stroke of the sliding block to drive the transmission mechanism, linear motion can be converted into rotational power without the need for an additional motor. After speed-increasing transmission, a pair of mutually pressing rubber-coated rollers are driven to rotate at high speed relative to each other. Utilizing the high friction characteristics of the rubber roller surface, a continuous downward pulling force can be applied to the yarn adhering to the clamp, forcibly pulling it off. This completely solves the problem of yarn adhesion preventing automatic unloading. The peeled yarn is guided into the collection box for centralized processing. The scraper structure can scrape off the yarn residue on the surface of the rubber-coated rollers in real time to prevent entanglement and jamming. During the subsequent upward reset process, the one-way bearing in the mechanism disconnects the transmission to prevent the rubber-coated rollers from reversing and causing the yarn to retract, ensuring the smooth operation of subsequent processes and further improving the continuity and stability of the device operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the acrylic fiber yarn strength testing device of the present invention; Figure 2 This is a schematic diagram of the gripping component structure of the acrylic yarn strength testing device of the present invention; Figure 3 This is a schematic diagram of the sliding frame structure of the acrylic fiber yarn strength testing device of the present invention; Figure 4 This is a schematic diagram of the slotted plate structure of the acrylic yarn strength testing device of the present invention; Figure 5 This is a schematic diagram of the guide plate structure of the acrylic fiber yarn strength testing device of the present invention; Figure 6 This is a schematic diagram of the vertical plate rear view of the acrylic yarn strength testing device of the present invention; Figure 7 This is a schematic diagram of the limiting frame structure of the acrylic yarn strength testing device of the present invention.

[0019] In the diagram: 1. Vertical plate; 2. Storage rod; 3. Damping roller; 4. Limiting ring; 5. Slide seat; 6. Positioning plate; 7. Gripping assembly; 701. Linear module; 702. Drive block; 703. Fixed rod; 704. Return spring; 705. Sliding frame; 706. Fixed clamping plate; 707. Movable clamping plate; 708. Top rod; 709. Positioning spring; 710. Sliding column; 711. Slotted plate; 712. First stop block; 713. Second stop block; 714. Pulley seat; 715. Baffle; 8. Clamping assembly; 801. Guide plate; 802. Guide groove; 803. 804. Roller seat; 805. Horizontal gear plate; 806. Gear shaft; 807. Bevel gear sleeve; 808. Bevel gear; 809. First side gear; 810. Second side gear; 811. Transmission column; 812. Compression spring; 813. Positive and negative threaded screw; 814. Anti-slip clamp; 815. Limiting frame; 9. Tension sensor; 10. Smooth rod; 11. Support spring; 12. Recycling assembly; 1201. Vertical gear plate; 1202. Rotating shaft; 1203. Transmission gear; 1204. Speed-increasing gear set; 1205. Rubber-coated roller; 1206. Scraper; 1207. Collection box. Detailed Implementation

[0020] Please see Figures 1 to 4 This invention provides a technical solution: a strength testing device for acrylic yarn, comprising a vertical plate 1 and a gripping assembly 7. A placement rod 2 is installed at one corner of the vertical plate 1, and a damping roller 3 is installed on the upper part of one side of the vertical plate 1. A limit ring 4 is installed below the damping roller 3 and is fixedly connected to the vertical plate 1. A slide block 5 is slidably connected to the middle of the vertical plate 1, and a positioning plate 6 is installed on both the slide block 5 and one side of the vertical plate 1. The gripping assembly 7 is located in the middle of the vertical plate 1 and includes a linear module 701. A drive block 702 is threadedly connected to the outer side of the screw of the linear module 701, and a fixing rod 703 is fixed to one side of the drive block 702. A return spring 704 is sleeved on the outer side of the fixing rod 703, and one end of the return spring 704 abuts against a sliding frame 705. One end of the 5 is fixed with a fixed clamping plate 706, and the inside of the sliding frame 705 is slidably connected with a movable clamping plate 707. The middle of the movable clamping plate 707 is fixed with a top rod 708, and a positioning spring 709 is sleeved on the outer side of one end of the top rod 708. A sliding column 710 is installed at one end of the top rod 708, and a slotted plate 711 is slidably connected to the outer side of the sliding column 710. The groove on the inner side of the slotted plate 711 is J-shaped, and the slotted plate 711 is slidably connected to the sliding frame 705. A first stop block 712 is fixed at the lower middle part of one side of the vertical plate 1, and a second stop block 713 is installed at the upper middle part of one side of the vertical plate 1. A pulley seat 714 is fixed on one side of the sliding frame 705, and a baffle 715 is installed above the pulley seat 714. The baffle 715 is an isosceles trapezoid, and the baffle 715 is fixedly connected to the vertical plate 1. The specific operation is as follows: First, place the acrylic new material yarn spool outside the storage rod 2, and then pull out the yarn and wrap it around the outside of the damping roller 3. Then, pass the yarn through the inside of the limiting ring 4. The storage rod 2 can be used to stably place the yarn spool. Through the cooperation of the damping roller 3 and the limiting ring 4, the yarn is initially guided and limited. After that, when the linear module 701 is started to control the drive block 702 to move upward, the pulley seat 714 will first contact the baffle 715. Under the guidance of the inclined surface of the baffle 715, the sliding frame 705 will be driven to squeeze the return spring 704 outward, and automatically perform the avoidance operation. Relying on the inclined surface structure of the baffle 715 and the rolling cooperation of the pulley seat 714, the automatic avoidance of the sliding frame 705 can be achieved without additional electric control drive, completely avoiding the gripping component. 7. To prevent collisions and interference with other structures during movement, and to ensure the stability of the device operation and the service life of the structure, when the pulley seat 714 separates from the baffle 715, the return spring 704 will push the sliding frame 705 under the limit of the fixed rod 703, so that the fixed clamping plate 706 and the movable clamping plate 707 are located on the outside of the yarn below the limit ring 4. Then, when the drive block 702 drives the slotted plate 711 to press the second stop 713, the sliding column 710 will slide out from the groove end of the slotted plate 711. At this time, the positioning spring 709 will push the movable clamping plate 707, automatically pressing the yarn onto the fixed clamping plate 706. With the help of the mechanical triggering structure of the slotted plate 711 and the second stop 713, it can achieve the desired result without the need for sensors, solenoid valves, or other electronic control components. The automatic clamping action of the movable clamping plate 707 simplifies the device's electrical control system, reduces manufacturing costs and the probability of failure. Subsequently, the linear module 701 controls the downward movement of the drive block 702. During this process, the outer side of the damping roller 3 is made of rubber, providing suitable friction with the yarn. The damping roller 3 rotates only under a set tension, maintaining a constant tension on the yarn between the damping roller 3 and the movable clamping plate 707, preventing yarn slack and wrinkles, and ensuring the yarn is in a straight and taut standard state before the tensile test, laying the foundation for subsequent strength testing. Afterwards, as the drive block 702 descends and resets, the yarn is moved to below the positioning plate 6. The spacing design between the V-shaped groove on the side of the positioning plate 6 and the vertical plate 1, in conjunction with the fixed clamping plate 706 and the movable clamping plate 707, facilitates the clamping action. The clamping position of the clamping plate 707 allows the yarn to be vertically and neatly placed between the grooves of the upper and lower positioning plates 6, effectively preventing yarn skewing and twisting during subsequent clamping. This eliminates the negative impact of yarn skewing on testing accuracy at its source. Furthermore, the fixed yarn position ensures that the effective yarn length is completely consistent for each test, eliminating systematic errors caused by differences in test length. This significantly improves the parallelism and accuracy of multiple yarn strength tests, guaranteeing the reliability and comparability of test data. After testing, when the push rod 708 contacts the first stop 712, the movable clamping plate 707 automatically releases the yarn, simplifying the unloading process. Simultaneously, the sliding column 710 presses against the slotted plate 711, causing it to slide within the sliding frame 705.After the push rod 708 separates from the first stop block 712, the sliding column 710 engages with the lower end of the slot in the slotted plate 711, maintaining the stable opening of the movable clamping plate 707 and preventing accidental closure from interfering with the next feeding. Therefore, during the reciprocating up-and-down movement of the linear module 701, the entire cycle of yarn pulling, clamping, positioning, testing, and unloading can be automatically completed using the aforementioned purely mechanical linkage structure, without the need for intermittent manual intervention. This significantly improves the automation and efficiency of yarn strength testing, meeting the continuous testing needs of large-volume acrylic new material yarns. It should be noted that the bellows on the outside of the screw of the linear module 701 and the telescopic cover at the opening in the vertical plate 1 are common dustproof structures in existing equipment. Therefore, this application only shows them briefly in the attached drawings and will not describe their specific structures in detail.

[0021] Please see Figure 1 , Figures 5 to 7 The other side of the linear module 701 is connected to a clamping assembly 8, which includes a guide plate 801. The guide plate 801 is fixed to the other side of the linear module 701, and a guide groove 802 is provided on one side of the guide plate 801. A roller seat 803 is slidably connected inside the guide groove 802, and a horizontal toothed plate 804 is fixed to one side of the roller seat 803. A gear shaft 805 is meshed on one side of the horizontal toothed plate 804, and a bevel gear sleeve 806 is slidably connected to the upper outer side of the gear shaft 805. The roller seat 803 is slidably connected to the vertical plate 1, and the vertical plate 1 is rotatably connected to the gear shaft 805. The upper part of the gear shaft 805 is prismatic, and a bevel gear 807 is meshed on one side of the bevel gear sleeve 806. A first side gear 808 is fixed to one end of the bevel gear 807, and a second side gear 809 is abutted on one side of the first side gear 808. A transmission column 810 is fixed, and a compression spring 811 is sleeved on the outside of the transmission column 810. One end of the compression spring 811 abuts against a threaded rod 812. The two ends of the threaded rod 812 are threaded with anti-slip plates 813. The outer side of the anti-slip plates 813 is slidably connected to a limit frame 814. The transmission column 810 is prismatic and slidably connected to the threaded rod 812. A tension sensor 9 is fixed on the upper part of the other side of the vertical plate 1, and a smooth rod 10 is installed on the lower part of the vertical plate 1. A support spring 11 is sleeved on the outside of the smooth rod 10 and slidably connected to the slide block 5. The limit frame 814 is rotatably connected to the threaded rod 812, the first side gear 808, and the bevel gear sleeve 806. There are two limit frames 814, and the upper and lower limit frames 814 are fixedly connected to the tension sensor 9 and the slide block 5, respectively. The specific operation is as follows: After the yarn is placed in the positioning plate 6, as the drive block 702 continues to move downward, it will drive the pulley on the roller seat 803 to slide into the guide groove 802 in the guide plate 801. Utilizing the inclined guide structure of the guide groove 802, the vertical downward movement of the drive block 702 can be converted into the horizontal movement of the roller seat 803, achieving a purely mechanical conversion of the motion form without the need for additional power drive components. Subsequently, as the drive block 702 continues to move downward, the roller seat 803 can move horizontally, and the roller seat 803 will drive the transverse toothed plate 804 to move synchronously, thereby transmitting the motion through the gear shaft 8... 05. The bevel sleeve 806, bevel gear 807, first side gear 808, second side gear 809, and transmission column 810 drive the positive and negative thread screw 812 to rotate. Multi-stage gear transmission ensures the stability and synchronicity of power transmission. Utilizing the bidirectional thread structure of the positive and negative thread screw 812, two sets of anti-slip clamps 813 can be driven to move synchronously in opposite directions, automatically clamping and fixing the vertical yarn without manual clamping, further improving the automation level of the device. Furthermore, when the driving torque is too high, the second side gear 809 will compress the spring 811. Slippage occurs between the second-side gear 809 and the first-side gear 808. This gear meshing, combined with the compression spring 811, forms a mechanical torque overload protection structure. This prevents damage to the acrylic yarn structure due to excessive clamping force and ensures consistent clamping force in each clamping operation, guaranteeing uniform clamping conditions across multiple tests and improving test data consistency. After clamping the yarn, the drive block 702 engages with the lower protrusion of the slide block 5, causing the slide block 5 to compress the support spring 11 and move downwards synchronously, thus stretching the yarn. No additional drive structure is required; the tension sensor at this point... The device can detect the tensile threshold when the yarn breaks, accurately collect the critical tensile data of yarn breakage, and provide an accurate and reliable test basis for evaluating the strength performance of acrylic new material yarn. After the yarn breaks, the roller seat 803 will move back to its original position under the guidance of the guide groove 802, and then drive the anti-slip clamp 813 to automatically release the yarn through the transmission structure. After the test is completed, the yarn will be automatically unloaded without manual intervention. The broken yarn can fall into the collection box 1207 below for collection, avoiding the broken yarn from scattering and accumulating and interfering with the normal operation of the device. At the same time, it is convenient for the subsequent centralized cleaning and disposal of yarn waste.

[0022] Please see Figure 1 , Figure 2 and Figure 6A recycling component 12 is provided at the lower part of the vertical plate 1, and the recycling component 12 includes a vertical toothed plate 1201. The vertical toothed plate 1201 is placed at the lower part of one side of the slide block 5, and a rotating shaft 1202 is rotatably connected to the lower part of the vertical plate 1. One end of the rotating shaft 1202 is connected to a transmission gear 1203 through a one-way bearing, and a speed-increasing gear set 1204 is fixed at the other end of the rotating shaft 1202. A rubber-coated roller 1205 is connected to the upper part of the speed-increasing gear set 1204, and a scraper 1206 is abutted at the bottom of the rubber-coated roller 1205. A collection box 1207 is fixed at one end of the scraper 1206. There are two rubber-coated rollers 1205, and the rubber-coated rollers 1205 are rotatably connected to the vertical plate 1. The specific operation is as follows: When some yarn adheres to the anti-slip clamp 813 and cannot fall freely, during the downward movement of the slide block 5, it will also drive the vertical tooth plate 1201 to mesh with the transmission gear 1203, which can convert the vertical linear motion of the slide block 5 into rotational power, fully utilizing the existing motion stroke of the device, eliminating the need for an additional drive motor, simplifying the device structure and reducing manufacturing costs. Furthermore, the internal one-way bearing drives the rotating shaft 1202 to rotate, which in turn drives the rubber-coated roller 1205 to rotate rapidly via the speed-increasing gear set 1204. Utilizing the speed-increasing transmission effect of the speed-increasing gear set 1204, the rotational linear speed of the rubber-coated roller 1205 is increased, ensuring sufficient traction force on the adhered yarn and ensuring that the adhered yarn can be smoothly peeled off. The rubber material on the outside of the rubber-coated roller 1205 significantly increases the coefficient of friction between the roller and the yarn, ensuring that there is no relative slippage between the roller and the yarn. Therefore, when the lower end of the yarn falls onto the rubber-coated roller 1205, the yarn will be stably wound between the two rubber-coated rollers 1205. The relatively rotating rollers apply a continuous downward pulling force to the yarn, forcibly pulling the yarn adhering to the anti-slip clamp 813 off, completely solving the problem of yarn adhesion and inability to automatically unload. This pulls the yarn down into the collection box 1207, where a scraper 1206 closely adheres to the outer wall of the rubber-coated roller 1205, scraping away yarn residue and debris adhering to the surface of the rubber-coated roller 1205 in real time. This prevents yarn from tangling around the rubber-coated roller 1205 and causing it to jam, thus achieving fully automated centralized collection of yarn waste. The system eliminates the need for manual cleaning. During the upward movement of the drive block 702, the support spring 11, supported by the vertical plate 1, drives the slide block 5 to move upward and reset smoothly. The slide block 5 can be automatically reset without the need for electrical control, simplifying the device control logic. At this time, the one-way bearing in the transmission gear 1203 will disconnect the transmission, allowing the rotating shaft 1202 and the transmission gear 1203 to rotate relative to each other. This prevents the rubber-coated roller 1205 from rotating in the opposite direction and causing the yarn to back up and become entangled, ensuring the smooth progress of subsequent material feeding and testing processes.

[0023] In summary, this new acrylic yarn strength testing device is used as follows: First, place the acrylic new material yarn spool outside the storage rod 2, and pull out the yarn and wrap it around the outside of the damping roller 3. Then, pass the yarn through the inside of the limiting ring 4. The yarn spool can be stably placed through the storage rod 2. The yarn is initially guided and limited by the cooperation between the damping roller 3 and the limiting ring 4. Secondly, when the linear module 701 controls the drive block 702 to move upward, the pulley seat 714 will first contact the baffle 715, thereby driving the sliding frame 705 to press the return spring 704 outward under the guidance of the inclined surface of the baffle 715, and automatically perform the avoidance operation. When the pulley seat 714 separates from the baffle 715, the return spring 704 will push the sliding frame 705 under the limit of the fixed rod 703, so that the fixed clamping plate 706 and the movable clamping plate 707 are located on the outside of the yarn below the limiting ring 4. Then, when the drive block 702 drives the slotted plate 711 to press the second stop 713 to abut, the sliding column 710 will slide out from the end of the groove of the slotted plate 711. At this time, the positioning spring 709 will push the movable clamping plate 707 and automatically press the yarn onto the fixed clamping plate 706. Next, the driving block 702 is moved down by the linear module 701. During this process, the outer side of the damping roller 3 is made of rubber, which has a suitable friction with the yarn. The damping roller 3 rotates only under the set tension, which can keep the yarn between the damping roller 3 and the movable clamping plate 707 at a constant tension, avoid the yarn from loosening and wrinkling, and ensure that the yarn is in a straight and taut standard state before the tensile test, laying the foundation for the subsequent strength test. Afterwards, as the driving block 702 moves down and resets, the yarn can be moved to the bottom of the positioning plate 6. The spacing design between the V-shaped groove on the side of the positioning plate 6 and the vertical plate 1, together with the clamping position of the fixed clamping plate 706 and the movable clamping plate 707, can place the yarn vertically and neatly between the grooves of the upper and lower positioning plates 6, effectively avoiding yarn skewing and twisting during subsequent clamping, and eliminating the negative impact of yarn skewing on the detection accuracy from the root. Subsequently, as the drive block 702 continues to move downward, it causes the pulley on the roller seat 803 to slide into the guide groove 802 within the guide plate 801. Utilizing the inclined guide structure of the guide groove 802, the vertical downward movement of the drive block 702 can be converted into the horizontal movement of the roller seat 803. The roller seat 803 then drives the transverse gear plate 804 to move synchronously, thereby driving the positive and negative thread screw 812 to rotate through the gear shaft 805, bevel sleeve 806, bevel gear 807, first side gear 808, second side gear 809, and transmission column 810, thus achieving multi-stage gear transmission. To ensure the stability and synchronization of power transmission, the bidirectional thread structure of the positive and negative thread screw 812 drives two sets of anti-slip clamps 813 to move synchronously in opposite directions. This allows the two sets of anti-slip clamps 813 to automatically clamp and fix the vertical yarn without manual clamping, further improving the automation level of the device. Furthermore, when the driving torque is too high, the second-side gear 809 will compress the compression spring 811, causing slippage between the second-side gear 809 and the first-side gear 808. This gear meshing and the cooperation of the compression spring 811 form a mechanical torque overload protection structure. Then, after clamping the yarn, the drive block 702 will fit against the lower protrusion of the slide block 5, thereby driving the slide block 5 to squeeze the support spring 11 and move down synchronously, thus stretching the yarn. No additional drive structure is needed. At this time, the tension sensor 9 can detect the tension threshold when the yarn breaks, accurately collect the critical tension data of yarn breakage, and provide an accurate and reliable test basis for evaluating the strength performance of acrylic new material yarn. After the yarn breaks, the roller seat 803 will be in the guide groove 802 Guided by the guide, the movable clamp 707 automatically releases the yarn via the transmission structure, and when the push rod 708 contacts the first stop 712, the movable clamp 707 automatically releases the yarn, achieving automatic unloading after the test. Simultaneously, the sliding column 710 presses against the slotted plate 711, causing it to slide within the sliding frame 705. After the push rod 708 separates from the first stop 712, the sliding column 710 engages with the lower end of the slot in the slotted plate 711, maintaining the stable opening of the movable clamp 707. Then, when some yarn adheres to the anti-slip clamp 813 and cannot fall freely, during the downward movement of the slide block 5, it will also drive the vertical tooth plate 1201 to mesh with the transmission gear 1203. This will drive the rotating shaft 1202 to rotate through the internal one-way bearing, and then drive the rubber-coated roller 1205 to rotate rapidly through the speed-increasing gear set 1204. Utilizing the speed-increasing transmission effect of the speed-increasing gear set 1204, the rotational linear speed of the rubber-coated roller 1205 is increased, ensuring sufficient traction force on the adhered yarn and ensuring that the adhered yarn can be successfully peeled off. Furthermore, the rubber material on the outside of the rubber-coated roller 1205 significantly increases the coefficient of friction between the roller and the yarn, ensuring that there is no friction between the roller and the yarn. Since the yarn is relatively slippery, when the lower end of the yarn falls onto the rubber-coated roller 1205, the yarn will be stably wound between the two rubber-coated rollers 1205. The relatively rotating rollers apply a continuous downward pulling force to the yarn, forcibly pulling the yarn adhering to the anti-slip clamp 813 off, completely solving the problem of yarn adhesion and inability to be automatically unloaded. The yarn is then pulled down and dragged into the collection box 1207. The scraper 1206 is in close contact with the outer wall of the rubber-coated roller 1205, scraping away the yarn residue and debris adhering to the surface of the rubber-coated roller 1205 in real time, preventing the yarn from getting tangled in the rubber-coated roller 1205 and causing the roller to jam. This achieves fully automatic centralized collection of yarn waste without the need for manual cleaning. Finally, when the drive block 702 moves upward and repeats the operation, the support spring 11 will drive the slide block 5 to move upward and reset smoothly under the support of the vertical plate 1. At this time, the one-way bearing in the transmission gear 1203 will disconnect the transmission, so that the rotating shaft 1202 and the transmission gear 1203 will rotate relative to each other, avoiding the reverse rotation of the rubber-coated roller 1205 to drive the yarn back and entangle, ensuring the smooth progress of the subsequent feeding and testing process of the device. Therefore, in the process of controlling the linear module 701 to move up and down, the entire process cycle of yarn pulling, clamping, positioning, testing and unloading can be automatically completed by relying on the above-mentioned pure mechanical linkage structure, without the need for manual intervention, which significantly improves the automation level and testing efficiency of yarn strength testing, and is suitable for the continuous testing needs of large batches of acrylic new material yarn.

[0024] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A device for testing the strength of acrylic fiber yarn, characterized in that, The assembly includes a vertical plate (1) and a gripping component (7). A placement rod (2) is installed at one corner of the vertical plate (1), and a damping roller (3) is installed on the upper part of one side of the vertical plate (1). A limit ring (4) is installed below the damping roller (3), and the limit ring (4) is fixedly connected to the vertical plate (1). A slide block (5) is slidably connected to the middle of the vertical plate (1), and a positioning plate (6) is installed on one side of both the slide block (5) and the vertical plate (1). The gripping component (7) is located in the middle of the vertical plate (1), and the gripping component (7) includes a linear module (701). A drive block (702) is threadedly connected to the outside of the screw of the linear module (701), and a fixing rod (703) is fixed on one side of the drive block (702). A return spring (704) is sleeved on the outside of the fixing rod (703), and the return spring (704) is fixed to the outside of the fixed rod (703). One end of the sliding frame (704) is abutted against the sliding frame (705). One end of the sliding frame (705) is fixed with a fixed clamping plate (706), and the sliding frame (705) is slidably connected with a movable clamping plate (707). The middle part of the movable clamping plate (707) is fixed with a top rod (708), and a positioning spring (709) is sleeved on the outer side of one end of the top rod (708). One end of the top rod (708) is equipped with a sliding column (710), and a slotted plate (711) is slidably connected to the outer side of the sliding column (710). A first stop block (712) is fixed on the lower middle part of one side of the vertical plate (1), and a second stop block (713) is installed on the upper middle part of one side of the vertical plate (1). A pulley seat (714) is fixed on one side of the sliding frame (705), and a baffle (715) is provided above the pulley seat (714).

2. The device for testing the strength of acrylic fiber yarn according to claim 1, characterized in that, The groove on the inner side of the slotted plate (711) is J-shaped, and the slotted plate (711) is slidably connected to the sliding frame (705).

3. The device for testing the strength of acrylic fiber yarn according to claim 1, characterized in that, The baffle (715) is an isosceles trapezoid and is fixedly connected to the vertical plate (1).

4. The device for testing the strength of acrylic fiber yarn according to claim 1, characterized in that, The other side of the linear module (701) is connected to a clamping assembly (8), and the clamping assembly (8) includes a guide plate (801). The guide plate (801) is fixed to the other side of the linear module (701), and a guide groove (802) is provided on one side of the guide plate (801). A roller seat (803) is slidably connected inside the guide groove (802), and a transverse toothed plate (804) is fixed to one side of the roller seat (803). A gear shaft (805) is meshed on one side of the transverse toothed plate (804), and a bevel gear sleeve (806) is slidably connected to the upper outer side of the gear shaft (805). A bevel gear (807) is engaged on one side of the bevel gear (807), and a first side gear (808) is fixed at one end of the bevel gear (807). A second side gear (809) is abutted on one side of the first side gear (808), and a transmission column (810) is fixed on one side of the second side gear (809). A compression spring (811) is sleeved on the outside of the transmission column (810), and a positive and negative thread screw (812) is abutted at one end of the compression spring (811). Anti-slip plates (813) are threaded on the outside of both ends of the positive and negative thread screw (812), and a limit frame (814) is slidably connected to the outside of the anti-slip plates (813).

5. The acrylic fiber yarn strength testing device according to claim 4, characterized in that, The roller seat (803) is slidably connected to the vertical plate (1), and the vertical plate (1) is rotatably connected to the gear shaft (805), and the upper part of the gear shaft (805) is prismatic.

6. The acrylic fiber yarn strength testing device according to claim 4, characterized in that, The transmission column (810) is prismatic and is slidably connected to the positive and negative thread screw (812).

7. The acrylic fiber yarn strength testing device according to claim 4, characterized in that, A tension sensor (9) is fixed on the upper part of the other side of the vertical plate (1), and a light rod (10) is installed on the lower part of the vertical plate (1). A support spring (11) is sleeved on the outside of the light rod (10), and the light rod (10) is slidably connected to the slide (5).

8. The device for testing the strength of acrylic fiber yarn according to claim 7, characterized in that, The limiting frame (814) is rotatably connected to the positive and negative thread screw (812), the first side gear (808) and the bevel sleeve (806), and there are two limiting frames (814), and the upper and lower limiting frames (814) are fixedly connected to the tension sensor (9) and the slide (5), respectively.

9. The device for testing the strength of acrylic fiber yarn according to claim 7, characterized in that, The lower part of the vertical plate (1) is provided with a recycling component (12), and the recycling component (12) includes a vertical toothed plate (1201). The lower part of one side of the slide (5) is provided with a vertical toothed plate (1201), and the lower part of the vertical plate (1) is rotatably connected with a rotating shaft (1202). One end of the rotating shaft (1202) is connected to a transmission gear (1203) through a one-way bearing, and the other end of the rotating shaft (1202) is fixed with a speed-increasing gear set (1204). The upper part of the speed-increasing gear set (1204) is connected with a rubber-coated roller (1205), and the bottom of the rubber-coated roller (1205) abuts against a scraper (1206). One end of the scraper (1206) is fixed with a collection box (1207).

10. The acrylic fiber yarn strength testing device according to claim 9, characterized in that, The number of the rubber-coating rollers (1205) is set to two, and the rubber-coating rollers (1205) are rotatably connected to the vertical plate (1).

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