Textile needle wear testing apparatus and method

Abstract

The present application relates to the technical field of textile needle wear testing, and particularly relates to a textile needle wear testing device and a testing method, which comprises a machine box, an electric control device, a pay-off rack, two wire guide rollers, a visual module, an auxiliary threading device, a clamping device, a reciprocating movement device, a wire guide device and a take-up device, which are electrically connected to the electric control device, respectively, a partition plate is arranged in the middle of the machine box, and a communication hole and a wire passing hole are arranged on the partition plate; the textile needle wear testing device disclosed in the present application simulates the use scene of the needle through the pay-off rack, the reciprocating movement device, the wire guide device and the take-up device, and combines the visual module to monitor the wear condition of the needle in real time, so as to realize automatic wear testing, avoid the sudden damage of the needle, effectively avoid the influence on production, and set the auxiliary threading device, so that threading operation is not needed in the limited space, and the work difficulty of the operator is reduced.

Description

Technical Field

[0001] This invention relates to the field of textile knitting needle wear testing technology, and in particular to a textile knitting needle wear testing device and testing method. Background Technology

[0002] Textile knitting needles are key components of precision textile equipment such as single- and double-sided circular knitting machines, small circular knitting machines, rib knitting machines, computerized jacquard machines, and high-precision single- and double-sided spandex knitting machines. During use, friction occurs between the needles and the textile yarn, leading to wear and even breakage, thus affecting production. To avoid needle breakage, needles are usually replaced before breakage. However, the quality of needles varies between different manufacturers and batches, making it difficult to accurately determine their lifespan.

[0003] It is evident that existing technologies still need improvement and enhancement. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a textile knitting needle wear testing device and testing method to solve the problem of not being able to determine the service life of knitting needles from different manufacturers and different batches.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A textile knitting needle wear testing device includes a chassis, an electrical control unit, a pay-off frame, two guide rollers, and a vision module, an auxiliary threading device, a clamping device, a reciprocating movement device, a guide wire device, and a take-up device, all electrically connected to the electrical control unit. The electrical control unit is mounted on the chassis. A partition plate is located in the center of the chassis, and the partition plate has a connecting hole and a thread-passing hole. The auxiliary threading device and the two guide rollers are arranged along the same straight line at the top of the chassis. The auxiliary threading device is positioned above the connecting hole. The two guide rollers... Located on both sides of the auxiliary threading device, the wire feeding frame and the wire passing hole are respectively located on both sides of the connecting hole along the straight line direction of the two wire guide rollers. The vision module is located on the top of the partition plate adjacent to the connecting hole. The clamping device is slidably located in the connecting hole. The reciprocating moving device, the wire guiding device, and the wire taking device are all located at the bottom of the machine housing. The output end of the reciprocating moving device is connected to the clamping device. The wire guiding device is located below the wire passing hole. The wire taking device is located adjacent to the wire guiding device.

[0007] As described above, a textile knitting needle wear testing device includes a clamping cylinder as the clamping device, and a reciprocating moving device including a concave groove, two sliding grooves, a sliding block, two locking strips, a drive motor, a turntable, a connecting rod, and a connecting assembly. The concave groove is located at the bottom of the partition plate, and one end of the concave groove is connected to the communicating hole. The two sliding grooves are respectively located on both sides of the concave groove. The sliding block is slidably located in the concave groove. The clamping cylinder is located on the top of the sliding block. The two locking strips are respectively located on both sides of the sliding block. The two sliding grooves and the two locking strips are respectively locked in one-to-one. The drive motor is located at the bottom of the machine housing. The turntable is located at the output end of the drive motor. The connecting assembly is offset on the side of the turntable facing away from the drive motor. The two ends of the connecting rod are respectively hinged to the sliding block and the connecting assembly.

[0008] As described above, a textile knitting needle wear testing device includes a connecting assembly comprising multiple pin holes and pin posts. The multiple pin holes are all located on the turntable, and the distance between each pin hole and the central axis of the turntable is different. The pin posts are sequentially inserted through any of the pin holes and one end of the connecting rod.

[0009] As described above, a textile knitting needle wear testing device includes a pay-off frame comprising a damping rotating shaft, a rotating cylinder, and a pressure plate. The damping rotating shaft is located on the top of the partition plate, one end of the rotating cylinder is connected to the top of the damping rotating shaft, and the pressure plate is threadedly connected to the other end of the rotating cylinder.

[0010] As described above, a textile knitting needle wear testing device includes an auxiliary threading device comprising a fixed base, a push cylinder, a connecting plate, and two pressure rollers. The fixed base is located at the top of the machine housing, the push cylinder is fixed to the fixed base, the connecting plate is located on the output end of the push cylinder, and the two pressure rollers are adjacently located on the side of the connecting plate facing the vision module. The two pressure rollers are rotatably connected to the connecting plate, and the push cylinder is electrically connected to the electronic control device.

[0011] The textile knitting needle wear testing device described above further includes an integrally formed base frame and a vertical frame. The vertical frame is located on one side of the top of the base frame, the wire guide device is located on the vertical frame, and the take-up device is located on the base frame.

[0012] As described above, a textile knitting needle wear testing device has a clearance groove extending through the side of the upright frame facing the take-up device. The lead wire device includes two guide rails, a concave slider, a lead wire cylinder, and a linear stepper motor. The two guide rails are arranged adjacent to each other in the clearance groove. The concave slider is slidably mounted on the two guide rails. The lead wire cylinder extends laterally through the concave slider. The linear stepper motor is located at the top of the upright frame, and the concave slider is connected to any output end of the linear stepper motor.

[0013] As described above, a textile knitting needle wear testing device includes a base frame comprising a base plate and two upright plates, the two upright plates being disposed adjacently on the base plate. Each of the two upright plates has a first locking groove and a second locking groove on opposite sides. The take-up device includes a take-up motor, a drive roller, a chuck, a bearing, a take-up drum, a driven roller, and a transmission belt. The take-up motor is engaged with the two first locking grooves, the chuck is engaged with the two second locking grooves, the bearing is rotatably disposed within the chuck, the take-up drum passes through the bearing, the driven roller is sleeved on one end of the take-up drum, the drive roller is disposed on the output end of the take-up motor, and the transmission belt is sleeved on the drive roller and the driven roller.

[0014] The present invention also provides a method for testing the wear of textile knitting needles, wherein the method is used in the wear testing equipment described above, and the specific steps are as follows:

[0015] Step S1: Fix the spinning bobbin to the pay-off frame, pull the spinning yarn through the two guide rollers, the auxiliary threading device, the thread hole and the guide device in sequence, and then wind it onto the take-up device. At the same time, fix the knitting needle to the clamping device to complete the preliminary preparation work.

[0016] Step S2: Set the speed of the drive motor and the take-up motor, as well as the number of rotations of the drive motor, through the electronic control device. Turn on the wear test equipment. The electronic control device first controls the vision module to scan and record the shape of the knitting needle. Then, it controls the auxiliary threading device to thread the textile yarn onto the knitting needle and then reset it. Subsequently, it simultaneously controls the reciprocating movement device, the guide wire device and the take-up device to start the wear test. The reciprocating movement device drives the knitting needle to move back and forth along the set path. The guide wire device guides one end of the textile yarn to be wound onto the take-up device to simulate the knitting needle's usage environment.

[0017] Step S3: When the drive motor reaches a number of set rotations in sequence, the reciprocating moving device, the wire guide device, and the take-up device stop operating. The vision module scans and records the morphology of the worn needles, and finally analyzes and compares the wear amount of the needles. Combined with the wear mechanism analysis, the service life of the needles is determined.

[0018] Beneficial effects:

[0019] This invention discloses a textile knitting needle wear testing device, comprising a chassis, an electrical control device, a pay-off frame, two guide rollers, and a vision module, an auxiliary threading device, a clamping device, a reciprocating movement device, a guide wire device, and a take-up device, all electrically connected to the electrical control device. A partition plate is provided in the center of the chassis, with a connecting hole and a thread-passing hole. Controlled by the electrical control device, the knitting needle is fixed to the clamping device, and the yarn spool is placed on the pay-off frame. The textile yarn is sequentially passed through the two guide rollers, the auxiliary threading device, the thread-passing hole, and the guide wire device before being wound onto the take-up device. The vision module scans the initial morphology and wear condition of the knitting needle in real time. The auxiliary threading device hooks the yarn onto the knitting needle, and the take-up device winds up the yarn. The yarn is moved along the threading path by the guide wire device, which in turn guides the yarn to move along the path. Combined with the reciprocating movement device, the yarn is moved along a set path to simulate the knitting needle's operating environment. This invention discloses a textile knitting needle wear testing device. Through the yarn feeder, the reciprocating movement device, the guide wire device, and the take-up device, the device simulates the knitting needle's operating scenario. Combined with the vision module, it monitors the wear of the knitting needle in real time, achieving automated wear testing. This provides accurate test data for the textile industry, enabling the control of the knitting needle's lifespan and timely replacement to prevent sudden needle damage and effectively avoid production disruptions. Furthermore, the auxiliary threading device eliminates the need for threading operations in confined spaces, reducing the workload for operators. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the wear testing equipment provided by the present invention;

[0021] Figure 2 A schematic diagram of the wear testing device provided by the present invention from another angle;

[0022] Figure 3 This is a partial structural schematic diagram of the reciprocating moving device provided by the present invention.

[0023] Figure 4 A schematic diagram of the wire-conducting device and the wire-receiving device provided by the present invention;

[0024] Reference numerals: 1-Chassis, 11-Separator plate, 12-Connecting hole, 13-Wire guide hole, 2-Wire feeder, 21-Damping rotating shaft, 22-Rotating cylinder, 23-Pressure plate, 3-Wire guide roller, 4-Vision module, 5-Auxiliary wire threading device, 51-Fixing base, 52-Push cylinder, 53-Connecting plate, 54-Pressure roller, 6-Clamping device, 7-Reciprocating moving device, 71-Concave groove, 72-Slide groove, 73-Sliding block, 74-Snap-fit ​​strip, 75-Drive motor, 76-Turntable, 77-Connecting rod 78-Connecting component, 781-Pin hole, 782-Pin post, 8-Wire guide device, 81-Guide rail, 82-Concave slider, 83-Wire tube, 84-Linear stepper motor, 9-Take-up device, 91-Take-up motor, 92-Drive roller, 93-Chuck, 94-Bearing, 95-Take-up tube, 96-Driven roller, 97-Transmission belt, 101-Base frame, 102-Upright frame, 103-Allowing groove, 104-Base plate, 105-Upright plate, 106-First locking groove, 107-Second locking groove. Detailed Implementation

[0025] This invention provides a textile knitting needle wear testing device and testing method. To make the purpose, technical solution and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0026] In the description of this invention, it should be understood that the terms "top" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and should not be construed as limiting the invention; in addition, the terms "installation," "connection," etc. should be interpreted broadly, and those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] like Figure 1-4As shown in the figure, this application proposes a textile knitting needle wear testing device, including a housing 1, an electrical control device, a pay-off frame 2, two guide rollers 3, and a vision module 4, an auxiliary threading device 5, a clamping device 6, a reciprocating movement device 7, a guide roller device 8, and a take-up device 9, all electrically connected to the electrical control device. The electrical control device is mounted on the housing 1. A partition plate 11 is provided in the middle of the housing 1. The partition plate 11 has a connecting hole 12 and a thread-passing hole 13. The auxiliary threading device 5 and the two guide rollers 3 are arranged in the same straight line at the top of the housing 1. The auxiliary threading device 5 is located above the connecting hole 12, and the two guide rollers 9 are located above the connecting hole 12. The guide rollers 3 are located on both sides of the auxiliary threading device 5. The wire feeding frame 2 and the wire passing hole 13 are respectively located on both sides of the connecting hole 12 along the straight line direction of the two guide rollers 3. The vision module 4 is located on the top of the partition plate 11 adjacent to the connecting hole 12. The clamping device 6 is slidably located in the connecting hole 12. The reciprocating moving device 7, the guide wire device 8, and the take-up device 9 are all located at the bottom of the housing 1. The output end of the reciprocating moving device 7 is connected to the clamping device 6. The guide wire device 8 is located below the wire passing hole 13. The take-up device 9 is located adjacent to the guide wire device 8.

[0028] This invention discloses a textile knitting needle wear testing device, comprising a housing 1, an electrical control device, a yarn feeder 2, two guide rollers 3, and a vision module 4, an auxiliary threading device 5, a clamping device 6, a reciprocating movement device 7, a guide wire device 8, and a take-up device 9, all electrically connected to the electrical control device. A partition plate 11 is provided in the center of the housing 1, with a connecting hole 12 and a thread passage hole 13. Controlled by the electrical control device, the knitting needle is fixed to the clamping device 6, and the yarn spool is placed on the yarn feeder 2. The textile yarn is sequentially passed through the two guide rollers 3, the auxiliary threading device 5, the thread passage hole 13, and the guide wire device 8 before being wound onto the take-up device 9. The vision module 4 scans the initial shape and wear condition of the knitting needle in real time. The auxiliary threading device 5 hooks the yarn onto the knitting needle, and the take-up device... Device 9 winds up the yarn to move it along the threading path. The guide wire device 8 guides the yarn movement, and the reciprocating moving device 7 moves the knitting needle along a set path, simulating the knitting needle's usage environment. This invention discloses a textile knitting needle wear testing device. Through the pay-off frame 2, the reciprocating moving device 7, the guide wire device 8, and the take-up device 9, it simulates the knitting needle's usage scenario. Combined with the vision module 4, it monitors the wear of the knitting needle in real time, achieving automated wear testing. This provides accurate test data for the textile industry to control the lifespan of textile knitting needles, allowing for timely replacement and preventing sudden needle damage, effectively avoiding production disruptions. Furthermore, the auxiliary threading device 5 eliminates the need for threading operations in confined spaces, reducing the workload for operators.

[0029] The clamping device 6 includes a clamping cylinder, and the reciprocating moving device 7 includes a concave groove 71, two sliding grooves 72, a sliding block 73, two locking strips 74, a drive motor 75, a turntable 76, a connecting rod 77, and a connecting assembly 78. The concave groove 71 is located at the bottom of the partition plate 11, and one end of the concave groove 71 is connected to the communicating hole 12. The two sliding grooves 72 are respectively located on both sides of the concave groove 71. The sliding block 73 is slidably located in the concave groove 71. The clamping cylinder is located on the top of the sliding block 73. The two locking strips 74 are respectively located on both sides of the sliding block 73. The two sliding grooves 72 and the two locking strips 74 are respectively locked in one-to-one. The drive motor 75 is located at the bottom of the housing 1, and the turntable 76 is located on the drive motor 75. At the output end of the motor 75, the connecting component 78 is offset on the side of the turntable 76 facing away from the drive motor 75. The two ends of the connecting rod 77 are respectively hinged to the sliding block 73 and the connecting component 78. The drive motor 75 drives the turntable 76 to rotate. Through the eccentric setting of the connecting component 78, one end of the connecting rod 77 rotates eccentrically with the turntable 76, and the other end of the connecting rod 77 pushes the sliding block 73 to move in the concave groove 71, thereby driving the clamping cylinder and the knitting needle to move, simulating the reciprocating piercing action of the knitting needle in the textile process. At the same time, through the cooperation of the two sliding grooves 72 and the two locking strips 74, the sliding block 73 is guided and limited, ensuring that the sliding block 73 moves smoothly and reducing the impact of mechanical vibration on the test.

[0030] The connecting component 78 includes multiple pin holes 781 and pin posts 782. The multiple pin holes 781 are all provided on the turntable 76. The distance between each pin hole 781 and the central axis of the turntable 76 is different. The pin posts 782 are sequentially inserted into any pin hole 781 and one end of the connecting rod 77. By inserting the pin posts 782 into different pin holes 781, the eccentric distance between the connecting rod 77 and the turntable 76 is adjusted, thereby changing the reciprocating stroke of the knitting needle, adapting to the needs of different types of knitting needles or different testing scenarios, and improving the versatility of the equipment.

[0031] The pay-off frame 2 includes a damping rotating shaft 21, a rotating cylinder 22, and a pressure plate 23. The damping rotating shaft 21 is located on the top of the partition plate 11. One end of the rotating cylinder 22 is connected to the top of the damping rotating shaft 21. The pressure plate 23 is threadedly connected to the other end of the rotating cylinder 22. The yarn spool is sleeved on the rotating cylinder 22. The pressure plate 23 is screwed on to fix the yarn spool, preventing the yarn spool from rotating axially during pay-off. The damping rotating shaft 21 provides stable resistance to the rotating cylinder 22, keeping the yarn taut at all times and preventing the yarn from detaching from the knitting needle or the friction between the yarn and the knitting needle from being insufficient, which would affect the test results.

[0032] The auxiliary threading device 5 includes a fixed base 51, a push cylinder 52, a connecting plate 53, and two pressure rollers 54. The fixed base 51 is located at the top of the machine housing 1. The push cylinder 52 is fixed on the fixed base 51. The connecting plate 53 is located on the output end of the push cylinder 52. The two pressure rollers 54 are adjacent to each other on the side of the connecting plate 53 facing the vision module 4. The two pressure rollers 54 are rotatably connected to the connecting plate 53. The push cylinder 52 is electrically connected to the electronic control device. The push cylinder 52 pushes the connecting plate 53 downward. The two pressure rollers 54 press the yarn against the knitting needle. Due to the support of the two pressure rollers 54, the yarn is straightened and passes through the knitting needle, replacing manual threading and reducing the difficulty of operation.

[0033] The wear testing equipment also includes an integrally formed base frame 101 and a stand 102. The stand 102 is located on one side of the top of the base frame 101. The lead wire device 8 is located on the stand 102, and the take-up device 9 is located on the base frame 101. The spatial positions of the lead wire device 8 and the take-up device 9 are reasonably allocated to optimize the yarn path and ensure smooth yarn winding. At the same time, the integrally formed base frame 101 and the stand 102 make the structure more stable, reduce the vibration of the lead wire device 8 and the take-up device 9, and avoid affecting the wear test.

[0034] The stand 102 has a through groove 103 extending through it on the side facing the take-up device 9. The lead wire device 8 includes two guide rails 81, a concave slider 82, a lead wire cylinder 83, and a linear stepper motor 84. The two guide rails 81 are arranged adjacent to each other in the through groove 103. The concave slider 82 is slidably mounted on the two guide rails 81. The lead wire cylinder 83 is transversely mounted on the concave slider 82. The linear stepper motor 84 is located at the top of the stand 102. The concave slider 82 is connected to any output end of the linear stepper motor 84. The yarn passes through the lead wire cylinder 83. The linear stepper motor 84 drives the concave slider 82 to move along the guide rails 81, which in turn drives the lead wire cylinder 83 to move synchronously. This guides the yarn to wind orderly on the take-up device 9, avoiding yarn tangling or accumulation, and ensuring consistent take-up tension to avoid affecting the test results.

[0035] The base frame 101 includes a base plate 104 and two upright plates 105, which are adjacent to each other on the base plate 104. Each of the two upright plates 105 has a first engaging groove 106 and a second engaging groove 107 on opposite sides. The take-up device 9 includes a take-up motor 91, a drive roller 92, a chuck 93, a bearing 94, a take-up drum 95, a driven roller 96, and a transmission belt 97. The take-up motor 91 is engaged with the two first engaging grooves 106, the chuck 93 is engaged with the two second engaging grooves 107, the bearing 94 is rotatably disposed within the chuck 93, and the take-up drum 95 passes through the bearing 94. The driven roller 96 is sleeved on one end of the take-up drum 95, the driving roller 92 is disposed on the output end of the take-up motor 91, and the transmission belt 97 is sleeved on the driving roller 92 and the driven roller 96. The two first locking grooves 106 restrict the movement of the take-up motor 91, and the two second locking grooves 107 restrict the movement of the chuck 93. The take-up motor 91 drives the take-up drum 95 to rotate through the driving roller 92, the driven roller 96 and the transmission belt 97 to realize the winding of the yarn. At the same time, the bearing 94 is provided to reduce the resistance between the take-up drum 95 and the chuck 93 to ensure smooth winding of the yarn.

[0036] In this embodiment of the application, the bottom of the outer casing 1 is provided with an ear plate, which can be connected to the external frame by screws passing through the ear plate to fix the wear testing equipment; the electronic control device includes an STM32 system, the vision module 4 includes a CCD camera; both the clamping cylinder and the pushing cylinder 52 include solenoid valves, which are connected to an external air source, and the electronic control device controls the connection of the solenoid valves.

[0037] A method for testing the wear of textile knitting needles, wherein the method is used in the wear testing equipment described above, and the specific steps are as follows:

[0038] Step S1: Fix the spinning bobbin to the pay-off frame, pull the spinning yarn through the two guide rollers, the auxiliary threading device, the thread hole and the guide device in sequence, and then wind it onto the take-up device. At the same time, fix the knitting needle to the clamping device to complete the preliminary preparation work.

[0039] Step S2: Set the speed of the drive motor and the take-up motor, as well as the number of rotations of the drive motor, through the electronic control device. Turn on the wear test equipment. The electronic control device first controls the vision module to scan and record the shape of the knitting needle. Then, it controls the auxiliary threading device to thread the textile yarn onto the knitting needle and then reset it. Subsequently, it simultaneously controls the reciprocating movement device, the guide wire device and the take-up device to start the wear test. The reciprocating movement device drives the knitting needle to move back and forth along the set path. The guide wire device guides one end of the textile yarn to be wound onto the take-up device to simulate the knitting needle's usage environment.

[0040] Step S3: When the drive motor reaches a number of set rotations in sequence, the reciprocating moving device, the wire guide device, and the take-up device stop operating. The vision module scans and records the morphology of the worn needles, and finally analyzes and compares the wear amount of the needles. Combined with the wear mechanism analysis, the service life of the needles is determined.

[0041] Specifically, after the yarn spool is fixed to the pay-off frame, the yarn passes through two guide rollers, an auxiliary threading device, a threading hole, and a guide device in sequence before being wound onto the take-up device, thus determining the yarn's movement path. Simultaneously, the knitting needle is fixed onto the clamping device, completing the preparation work. Then, the speed of the drive motor and the take-up motor, as well as the number of rotations of the drive motor, are set by the electronic control device. The speed of the drive motor corresponds to the running speed of the knitting needle, the speed of the take-up motor corresponds to the running speed of the yarn, and the number of rotations of the drive motor corresponds to the number of times the knitting needle moves. The auxiliary threading device presses the yarn down onto the knitting needle. The drive motor drives the sliding block and the clamping device to move along the concave groove via a connecting rod. That is, the set path of the knitting needle is to move along the central axis of the concave groove. The guide device and the take-up device drive the yarn movement, simulating the knitting needle's operating environment.

[0042] Whether a knitting needle needs to be replaced is determined based on the ratio between the area of ​​deformation or cracking of the knitting needle, or the area of ​​burrs on the knitting needle in contact with the yarn. In this application, when the knitting needle is deformed, cracked, or the wear depth of the knitting needle exceeds 50% of the knitting needle thickness, it is considered to be severely worn and needs to be replaced in time. When the drive motor reaches each number of rotations, the vision module scans and records the knitting needles at each stage, analyzes and compares the wear data such as whether there is deformation or cracking on the knitting needle, and the ratio of the wear depth of the knitting needle, so as to predict the service life of the knitting needle.

[0043] In this application, the specific steps for analyzing and comparing the wear of knitting needles are as follows: the three-dimensional morphology of the contact point between the knitting needle and the yarn is acquired through the vision module 4. After the wear test, the acquired image is first subjected to median filtering. The core principle of the median filtering method is to replace the gray value of each pixel with the median of the gray values ​​of all pixels in its neighborhood window. The specific processing steps include: (1) determining the odd-sized template; (2) boundary filling processing; (3) neighborhood array sorting; (4) median replacement. The median filtering algorithm can replace the original pixel value with the median of the gray value in the neighborhood window of the pixel to achieve image smoothing. It has significant advantages in eliminating noise and impulse interference, and can effectively preserve the image edge features and avoid This avoids the edge blurring problem caused by linear filters. Next, edge detection processing is performed on the image. The basic principle of edge detection is to use the gray-level difference of the image to identify edges from the gradient (rate of change) of the image. That is, at the edge of the image, the gray-level value changes significantly, which leads to an increase in the gradient of the image, while the gradient of other parts is very small. After completing the image processing, coordinate systems are established for the corresponding knitting needle images at each number of rotations. Using the initial knitting needle image as a reference, the wear characteristics of the knitting needle are obtained by comparing and analyzing the edge data of the images before and after the knitting needle wear, as well as the missing coordinate data. This includes information such as the shape of the contact point between the knitting needle and the yarn after wear, and the wear depth, thereby determining the amount of knitting needle wear.

[0044] It is understood that those skilled in the art can make equivalent substitutions or changes to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A textile knitting needle wear testing device, characterized in that, The device includes a chassis, an electrical control unit, a wire feeding frame, two wire guide rollers, a vision module, an auxiliary wire threading device, a clamping device, a reciprocating movement device, a wire guiding device, and a take-up device. The electrical control unit is mounted on the chassis. A partition plate is located in the center of the chassis, and the partition plate has a connecting hole and a wire passage hole. The auxiliary wire threading device and the two wire guide rollers are arranged in a straight line at the top of the chassis. The auxiliary wire threading device is located above the connecting hole, and the two wire guide rollers are located on both sides of the auxiliary wire threading device. The wire feeding frame and the wire passage hole are respectively arranged in a straight line along the two wire guide rollers on both sides of the connecting hole. The vision module is located adjacent to the connecting hole on the top of the partition plate. The clamping device is slidable. The reciprocating moving device is located within the communicating hole. Its output end is connected to the clamping device. The wire guide is located below the wire through hole, and the wire take-up device is located adjacent to the wire guide. The clamping device includes a clamping cylinder. The reciprocating moving device includes a concave groove, two sliding grooves, a sliding block, two locking strips, a drive motor, a turntable, a connecting rod, and a connecting assembly. The concave groove is located at the bottom of the partition plate, with one end connected to the communicating hole. The two sliding grooves are respectively located on both sides of the concave groove. The sliding block is slidably located within the concave groove. The clamping cylinder is located on the top of the sliding block. The two locking strips are respectively located on both sides of the sliding block. The two sliding grooves and two locking strips... The snap-fit ​​strips are snapped together one by one. The drive motor is located at the bottom of the housing. The turntable is located on the output end of the drive motor. The connecting assembly is offset on the side of the turntable facing away from the drive motor. The two ends of the connecting rod are respectively hinged to the sliding block and the connecting assembly. The wear testing equipment also includes an integrally formed base frame and a stand. The stand has a clearance groove through the side facing the wire take-up device. The wire take-up device includes two guide rails, a concave slider, a wire cylinder, and a linear stepper motor. The two guide rails are adjacent to each other in the clearance groove. The concave slider is slidably mounted on the two guide rails. The wire cylinder is transversely mounted on the concave slider. The linear stepper motor is located on the stand. At the top, the concave slider is connected to either output end of the linear stepper motor; the base frame includes a base plate and two upright plates, the two upright plates are adjacent to each other on the base plate, and each of the two upright plates has a first locking groove and a second locking groove on opposite sides; the take-up device includes a take-up motor, a drive roller, a chuck, a bearing, a take-up drum, a driven roller, and a transmission belt; the take-up motor is engaged with the two first locking grooves, the chuck is engaged with the two second locking grooves, the bearing is rotatably disposed in the chuck, the take-up drum passes through the bearing, the driven roller is sleeved on one end of the take-up drum, the drive roller is disposed on the output end of the take-up motor, and the transmission belt is sleeved on the drive roller and the driven roller.

2. The textile knitting needle wear testing device according to claim 1, characterized in that, The connecting assembly includes multiple pin holes and pin posts. The multiple pin holes are all provided on the turntable, and the distance between each pin hole and the central axis of the turntable is different. The pin posts are sequentially inserted through any of the pin holes and one end of the connecting rod.

3. The textile knitting needle wear testing device according to claim 1, characterized in that, The wire feeding frame includes a damping rotating shaft, a rotating cylinder, and a pressing plate. The damping rotating shaft is located on the top of the partition plate. One end of the rotating cylinder is connected to the top of the damping rotating shaft, and the pressing plate is threadedly connected to the other end of the rotating cylinder.

4. The textile knitting needle wear testing device according to claim 1, characterized in that, The auxiliary threading device includes a fixed base, a push cylinder, a connecting plate, and two pressure rollers. The fixed base is located at the top of the machine housing. The push cylinder is fixed on the fixed base. The connecting plate is located on the output end of the push cylinder. The two pressure rollers are located adjacent to each other on the side of the connecting plate facing the vision module. The two pressure rollers are rotatably connected to the connecting plate. The push cylinder is electrically connected to the electronic control device.

5. The textile knitting needle wear testing device according to claim 1, characterized in that, The upright frame is located on one side of the top of the base frame, the wire guide device is located on the upright frame, and the wire take-up device is located on the base frame.

6. A method for testing the wear of textile knitting needles, characterized in that, The textile knitting needle wear testing method is used in the wear testing equipment as described in any one of claims 1-5, and the specific steps are as follows: Step S1: Fix the spinning bobbin to the pay-off frame, pull the spinning yarn through the two guide rollers, the auxiliary threading device, the thread hole and the guide device in sequence, and then wind it onto the take-up device. At the same time, fix the knitting needle to the clamping device to complete the preliminary preparation work. Step S2: Set the speed of the drive motor and the take-up motor, as well as the number of rotations of the drive motor, through the electronic control device. Turn on the wear test equipment. The electronic control device first controls the vision module to scan and record the shape of the knitting needle. Then, it controls the auxiliary threading device to thread the textile yarn onto the knitting needle and then reset it. Subsequently, it simultaneously controls the reciprocating movement device, the guide wire device and the take-up device to start the wear test. The reciprocating movement device drives the knitting needle to move back and forth along the set path. The guide wire device guides one end of the textile yarn to be wound onto the take-up device to simulate the knitting needle's usage environment. Step S3: When the drive motor reaches a number of set rotations in sequence, the reciprocating moving device, the wire guide device, and the take-up device stop operating. The vision module scans and records the morphology of the worn needles, and finally analyzes and compares the wear amount of the needles. Combined with the wear mechanism analysis, the service life of the needles is determined.

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