Testing equipment and testing method for abrasion of textile knitting needle

Abstract

The invention relates to the technical field of textile knitting needle abrasion testing, in particular to textile knitting needle abrasion testing equipment and a testing method.The textile knitting needle abrasion testing equipment comprises a case, an electric control device, a pay-off rack, two yarn guide rollers, a visual module, an auxiliary threading device, a clamping device, a reciprocating device, a yarn guide device and a take-up device, and the visual module, the auxiliary threading device, the clamping device, the reciprocating device, the yarn guide device and the take-up device are electrically connected with the electric control device. A partition plate is arranged in the middle of the interior of the case, and a communicating hole and a wire passing hole are formed in the partition plate; according to the textile knitting needle wear test equipment disclosed by the invention, the use scene of a knitting needle is simulated through the pay-off rack, the reciprocating device, the thread guide device and the take-up device, and the wear condition of the knitting needle is monitored in real time in combination with the visual module, so that an automatic wear test is realized, the situation that the knitting needle is suddenly damaged is avoided, and the working efficiency is improved. The influence on production is effectively avoided; and the auxiliary threading device is arranged, so that threading operation does not need to be carried out in a limited space, and the working difficulty of operators is reduced.

Description

TECHNICAL FIELD

[0001] 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. BACKGROUND

[0002] A textile needle is a key component 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 machines. Since mutual friction occurs between the needle and the textile yarn during use, the needle will wear out, and when the wear is severe, the needle may even break, thereby affecting production. In order to avoid the needle breaking, the needle usually needs to be replaced before breaking, but the quality of the needle of different manufacturers and different batches is different, and it is difficult to accurately determine the service life of the needle.

[0003] It can be seen that the prior art still needs to be improved and enhanced. SUMMARY

[0004] In view of the above shortcomings of the prior art, the purpose of the present application is to provide a textile needle wear testing device and a testing method to solve the problem that the service life of the needle of different manufacturers and different batches cannot be determined.

[0005] In order to achieve the above purpose, the present application adopts the following technical scheme: A textile needle wear testing device, comprising a machine box, an electric control device, a wire feeding rack, two wire guide rollers, and a visual module, an auxiliary threading device, a clamping device, a reciprocating movement device, a wire guide device and a wire winding device which are electrically connected with the electric control device respectively, the electric control device is arranged on the machine box, a partition plate is arranged in the middle of the machine box, a communication hole and a wire passing hole are arranged on the partition plate, the auxiliary threading device and the two wire guide rollers are arranged on the top of the machine box along the same straight line direction, the auxiliary threading device is arranged above the communication hole, the two wire guide rollers are arranged on both sides of the auxiliary threading device, the wire feeding rack and the wire passing hole are arranged on both sides of the communication hole along the straight line direction of the two wire guide rollers respectively, the visual module is arranged on the top of the partition plate adjacent to the communication hole, the clamping device is slidably arranged in the communication hole, the reciprocating movement device, the wire guide device and the wire winding device are all arranged on the bottom of the machine box, the output end of the reciprocating movement device is connected with the clamping device, the wire guide device is arranged below the wire passing hole, and the wire winding device is arranged adjacent to the wire guide device.

[0006] The textile needle wear testing equipment has the clamping device, the reciprocating moving device and the auxiliary threading device, the clamping device comprises a clamping air cylinder, the reciprocating moving device comprises a concave groove, two sliding grooves, a sliding block, two clamping strips, a driving motor, a rotating disc, a connecting rod and a connecting assembly, the concave groove is arranged at the bottom of the partition plate, one end of the concave groove is connected with the communication hole, the two sliding grooves are arranged on the two sides in the concave groove respectively, the sliding block is slidably arranged in the concave groove, the clamping air cylinder is arranged on the top of the sliding block, the two clamping strips are arranged on the two sides of the sliding block respectively, the two sliding grooves and the two clamping strips are clamped one by one respectively, the driving motor is arranged at the bottom in the machine box, the rotating disc is arranged on the output end of the driving motor, the connecting assembly is arranged on the side of the rotating disc away from the driving motor, and the two ends of the connecting rod are hingedly connected with the sliding block and the connecting assembly respectively.

[0007] The textile needle wear testing equipment has the clamping device, the reciprocating moving device and the auxiliary threading device, the clamping device comprises a clamping air cylinder, the reciprocating moving device comprises a concave groove, two sliding grooves, a sliding block, two clamping strips, a driving motor, a rotating disc, a connecting rod and a connecting assembly, the concave groove is arranged at the bottom of the partition plate, one end of the concave groove is connected with the communication hole, the two sliding grooves are arranged on the two sides in the concave groove respectively, the sliding block is slidably arranged in the concave groove, the clamping air cylinder is arranged on the top of the sliding block, the two clamping strips are arranged on the two sides of the sliding block respectively, the two sliding grooves and the two clamping strips are clamped one by one respectively, the driving motor is arranged at the bottom in the machine box, the rotating disc is arranged on the output end of the driving motor, the connecting assembly is arranged on the side of the rotating disc away from the driving motor, and the two ends of the connecting rod are hingedly connected with the sliding block and the connecting assembly respectively.

[0008] The textile needle wear testing equipment has the clamping device, the reciprocating moving device and the auxiliary threading device, the clamping device comprises a clamping air cylinder, the reciprocating moving device comprises a concave groove, two sliding grooves, a sliding block, two clamping strips, a driving motor, a rotating disc, a connecting rod and a connecting assembly, the concave groove is arranged at the bottom of the partition plate, one end of the concave groove is connected with the communication hole, the two sliding grooves are arranged on the two sides in the concave groove respectively, the sliding block is slidably arranged in the concave groove, the clamping air cylinder is arranged on the top of the sliding block, the two clamping strips are arranged on the two sides of the sliding block respectively, the two sliding grooves and the two clamping strips are clamped one by one respectively, the driving motor is arranged at the bottom in the machine box, the rotating disc is arranged on the output end of the driving motor, the connecting assembly is arranged on the side of the rotating disc away from the driving motor, and the two ends of the connecting rod are hingedly connected with the sliding block and the connecting assembly respectively.

[0009] The textile needle wear testing equipment has the clamping device, the reciprocating moving device and the auxiliary threading device, the clamping device comprises a clamping air cylinder, the reciprocating moving device comprises a concave groove, two sliding grooves, a sliding block, two clamping strips, a driving motor, a rotating disc, a connecting rod and a connecting assembly, the concave groove is arranged at the bottom of the partition plate, one end of the concave groove is connected with the communication hole, the two sliding grooves are arranged on the two sides in the concave groove respectively, the sliding block is slidably arranged in the concave groove, the clamping air cylinder is arranged on the top of the sliding block, the two clamping strips are arranged on the two sides of the sliding block respectively, the two sliding grooves and the two clamping strips are clamped one by one respectively, the driving motor is arranged at the bottom in the machine box, the rotating disc is arranged on the output end of the driving motor, the connecting assembly is arranged on the side of the rotating disc away from the driving motor, and the two ends of the connecting rod are hingedly connected with the sliding block and the connecting assembly respectively.

[0010] The textile needle wear testing equipment has the clamping device, the reciprocating moving device and the auxiliary threading device, the clamping device comprises a clamping air cylinder, the reciprocating moving device comprises a concave groove, two sliding grooves, a sliding block, two clamping strips, a driving motor, a rotating disc, a connecting rod and a connecting assembly, the concave groove is arranged at the bottom of the partition plate, one end of the concave groove is connected with the communication hole, the two sliding grooves are arranged on the two sides in the concave groove respectively, the sliding block is slidably arranged in the concave groove, the clamping air cylinder is arranged on the top of the sliding block, the two clamping strips are arranged on the two sides of the sliding block respectively, the two sliding grooves and the two clamping strips are clamped one by one respectively, the driving motor is arranged at the bottom in the machine box, the rotating disc is arranged on the output end of the driving motor, the connecting assembly is arranged on the side of the rotating disc away from the driving motor, and the two ends of the connecting rod are hingedly connected with the sliding block and the connecting assembly respectively.

[0011] The textile needle wear test equipment as described above, the side of the stand towards the take-up device is provided with a avoiding slot, the wire device comprises two guide rails, a concave slider, a wire drum and a linear stepper motor, the two guide rails are provided adjacent in the avoiding slot, the concave slider is slidably arranged on the two guide rails, the wire drum is transversely provided on the concave slider, the linear stepper motor is provided on the top of the stand, and the concave slider is connected with any output end of the linear stepper motor.

[0012] The textile needle wear test equipment as described above, the base frame comprises a base plate and two vertical plates, the two vertical plates are provided adjacent on the base plate, and the opposite sides of the two vertical plates are respectively provided with a first clamping groove and a second clamping groove, the take-up device comprises a take-up motor, a driving roller, a chuck, a bearing, a take-up drum, a driven roller and a transmission belt, the take-up motor is clamped on the two first clamping grooves, the chuck is clamped on the two second clamping grooves, the bearing is rotatably arranged in the chuck, the take-up drum is provided through the bearing, the driven roller is sleeved on one end of the take-up drum, the driving roller is provided on the output end of the take-up motor, and the transmission belt is sleeved on the driving roller and the driven roller.

[0013] The application also correspondingly provides a textile needle wear test method, which is used for the wear test equipment as described above, and the specific steps are as follows: Step S1: fixing a textile drum on the wire reel, and winding the textile yarn on the take-up device after the textile yarn is sequentially threaded through two wire rollers, an auxiliary threading device, a wire hole and a wire device, and fixing the needle on the clamping device to complete the preliminary preparation work; Step S2: setting the rotation speed of the driving motor and the take-up motor and the number of rotation circles of the driving motor through the electric control device, starting the wear test equipment, and controlling the visual module to scan and record the appearance of the needle through the electric control device, then controlling the auxiliary threading device to reset after threading the textile yarn on the needle, and then simultaneously controlling the reciprocating movement device, the wire device and the take-up device to start the wear test, the reciprocating movement device drives the needle to reciprocate along the set path, the wire device guides one end of the textile yarn to be wound on the take-up device, and the use environment of the needle is simulated; Step S3: when the driving motor reaches the set number of rotation circles, the reciprocating movement device, the wire device and the take-up device stop running, the visual module scans and records the appearance of the needle after wear, finally analyzes and compares the wear amount of the needle, and obtains the service life of the needle combined with the wear mechanism analysis.

[0014] Advantages: The application discloses a textile needle wear testing device, which comprises a machine box, an electric control device, a wire placing rack, two wire guide rollers, a visual module, an auxiliary threading device, a clamping device, a reciprocating moving device, a wire guiding device and a wire winding device which are electrically connected with the electric control device, 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 initial appearance and wear condition of the needle are scanned in real time by the visual module; the auxiliary threading device hooks the yarn on the needle; the wire winding device winds the yarn to drive the yarn to move along the threading path; the wire guiding device guides the yarn to move, and the reciprocating moving device drives the needle to move along the set path, so that the use environment of the needle is simulated; the textile needle wear testing device simulates the use scene of the needle through the wire placing rack, the reciprocating moving device, the wire guiding device and the wire winding device, combines the visual module to monitor the wear condition of the needle in real time, realizes automatic wear testing, can provide accurate testing data for the textile industry, so that the service life of the textile needle is controlled, the needle is replaced at proper time, the sudden damage of the needle is avoided, the influence on production is effectively avoided, and the auxiliary threading device is arranged, threading operation is not needed in the limited space, and the work difficulty of the operator is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure schematic view of the wear testing device is provided for the application. Figure 2 Another angle structure schematic view of the wear testing device is provided for the application. Figure 3 A partial structure schematic view of the reciprocating moving device is provided for the application. Figure 4 A structure schematic view of the wire guiding device and the wire winding device is provided for the application. Reference signs: 1 - cabinet, 11 - partition plate, 12 - communication hole, 13 - wire passing hole, 2 - wire paying-off frame, 21 - damping rotating shaft, 22 - rotating cylinder, 23 - pressing disc, 3 - wire guide roller, 4 - visual module, 5 - auxiliary threading device, 51 - fixing seat, 52 - pushing air cylinder, 53 - connecting plate, 54 - wire pressing roller, 6 - clamping device, 7 - reciprocating moving device, 71 - concave groove, 72 - sliding groove, 73 - sliding block, 74 - clamping strip, 75 - driving motor, 76 - rotating disc, 77 - connecting rod, 78 - connecting assembly, 781 - pin connection hole, 782 - pin connection column, 8 - wire guide device, 81 - guide rail, 82 - concave sliding block, 83 - wire guide cylinder, 84 - linear stepping motor, 9 - wire winding device, 91 - wire winding motor, 92 - driving roller, 93 - chuck, 94 - bearing, 95 - wire winding cylinder, 96 - driven roller, 97 - transmission belt, 101 - base frame, 102 - stand, 103 - avoiding groove, 104 - bottom plate, 105 - vertical plate, 106 - first clamping groove, 107 - second clamping groove. DETAILED DESCRIPTION

[0016] The present application provides a textile needle wear testing device and testing method, in order to make the purpose, technical scheme and effect of the present application more clear and definite, the present application is further described in detail below with reference to the drawings and examples.

[0017] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "top" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and cannot be understood as a limitation on the present application; in addition, the terms "mounting", "connecting" and the like should be understood in a broad sense, and those skilled in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0018] As Figures 1-4As shown, the embodiment of the present application provides a textile needle wear testing device, which comprises a cabinet 1, an electric control device, a pay-off rack 2, two wire guide rollers 3, and a visual module 4, an auxiliary threading device 5, a clamping device 6, a reciprocating movement device 7, a wire guide device 8 and a take-up device 9 which are electrically connected with the electric control device respectively, the electric control device is arranged on the cabinet 1, a partition plate 11 is arranged in the middle of the cabinet 1, the partition plate 11 is provided with a communication hole 12 and a wire passing hole 13, the auxiliary threading device 5 and the two wire guide rollers 3 are arranged on the top of the cabinet 1 along the same linear direction, the auxiliary threading device 5 is arranged above the communication hole 12, the two wire guide rollers 3 are arranged on the two sides of the auxiliary threading device 5, the pay-off rack 2 and the wire passing hole 13 are arranged on the two sides of the communication hole 12 along the linear direction of the two wire guide rollers 3 respectively, the visual module 4 is arranged on the top of the partition plate 11 adjacent to the communication hole 12, the clamping device 6 is slidably arranged in the communication hole 12, the reciprocating movement device 7, the wire guide device 8 and the take-up device 9 are all arranged on the bottom of the cabinet 1, the output end of the reciprocating movement device 7 is connected with the clamping device 6, the wire guide device 8 is arranged below the wire passing hole 13, and the take-up device 9 is arranged adjacent to the wire guide device 8.

[0019] The application discloses a textile needle wear testing equipment which comprises a machine box 1, an electric control device, a wire rack 2, two wire guide rollers 3, and a visual module 4, an auxiliary threading device 5, a clamping device 6, a reciprocating moving device 7, a wire guide device 8 and a wire winding device 9 which are electrically connected with the electric control device respectively, a partition plate 11 is arranged in the middle of the machine box 1, the partition plate 11 is provided with a communication hole 12 and a wire passing hole 13, the needle is fixed on the clamping device 6, the thread drum is placed on the wire rack 2, and the textile yarn is sequentially threaded through the two wire guide rollers 3, the auxiliary threading device 5, the wire passing hole 13 and the wire guide device 8 and then wound on the wire winding device 9, the visual module 4 scans the initial appearance and wear condition of the needle in real time, the auxiliary threading device 5 hooks the yarn on the needle, the wire winding device 9 winds the yarn to drive the yarn to move along the threading path, the wire guide device 8 guides the yarn to move, the reciprocating moving device 7 drives the needle to move along the set path, and the use environment of the needle is simulated; the textile needle wear testing equipment disclosed by the application simulates the use scene of the needle through the wire rack 2, the reciprocating moving device 7, the wire guide device 8 and the wire winding device 9, combines the visual module 4 to monitor the wear condition of the needle in real time, realizes automatic wear testing, can provide accurate testing data for the textile industry, so that the service life of the textile needle can be controlled, the needle can be replaced at a proper time, the sudden damage of the needle can be avoided, the influence on production is effectively avoided, and the auxiliary threading device 5 is arranged, threading operation in a limited space is not needed, and the working difficulty of the operator is reduced.

[0020] The clamping device 6 comprises a clamping cylinder, the reciprocating movement device 7 comprises a concave groove 71, two sliding grooves 72, a sliding block 73, two clamping strips 74, a driving motor 75, a rotating disc 76, a connecting rod 77 and a connecting assembly 78, the concave groove 71 is arranged at the bottom of the partition plate 11, one end of the concave groove 71 is connected with the communication hole 12, two sliding grooves 72 are arranged at two sides in the concave groove 71 respectively, the sliding block 73 is slidably arranged in the concave groove 71, the clamping cylinder is arranged on the top of the sliding block 73, two clamping strips 74 are arranged at two sides of the sliding block 73 respectively, two sliding grooves 72 and two clamping strips 74 are clamped one by one respectively, the driving motor 75 is arranged at the bottom in the cabinet 1, the rotating disc 76 is arranged on the output end of the driving motor 75, the connecting assembly 78 is arranged on the side of the rotating disc 76 away from the driving motor 75, the connecting rod 77 is hinged at two ends with the sliding block 73 and the connecting assembly 78 respectively, the driving motor 75 drives the rotating disc 76 to rotate, the connecting assembly 78 is arranged eccentrically, one end of the connecting rod 77 rotates eccentrically with the rotating disc 76, the other end of the connecting rod 77 pushes the sliding block 73 to move in the concave groove 71, so as to drive the clamping cylinder and the knitting needle to move, simulate the reciprocating piercing action of the knitting needle in the weaving process, and at the same time, through the cooperation of the two sliding grooves 72 and the two clamping strips 74, the sliding block 73 is guided and limited, the stable movement of the sliding block 73 is ensured, and the influence of mechanical vibration on the test is reduced.

[0021] The connecting assembly 78 comprises a plurality of pin connection holes 781 and a pin connection column 782, the pin connection holes 781 are arranged on the rotating disc 76, the distance between each pin connection hole 781 and the central axis of the rotating disc 76 is different, the pin connection column 782 is sequentially arranged in any pin connection hole 781 and one end of the connecting rod 77, by inserting the pin connection column 782 into different pin connection holes 781, the eccentric distance between the connecting rod 77 and the rotating disc 76 is adjusted, so as to change the reciprocating movement stroke of the knitting needle, adapt to different models of knitting needles or different test scenes, and improve the universality of the equipment.

[0022] The pay-off stand 2 comprises a damping rotating shaft 21, a rotating cylinder 22 and a pressing disc 23, the damping rotating shaft 21 is arranged at the top of the partition plate 11, one end of the rotating cylinder 22 is connected with the top of the damping rotating shaft 21, the pressing disc 23 is threadedly connected with the other end of the rotating cylinder 22, a line cylinder sleeve is arranged on the rotating cylinder 22, the pressing disc 23 is fixed by screwing to fix the line cylinder, so as to prevent the line cylinder from rotating axially during the pay-off process, the damping rotating shaft 21 provides stable resistance for the rotating cylinder 22, so that the yarn is always taut, prevents the yarn from being separated from the knitting needle, or the friction between the yarn and the knitting needle is insufficient, and affects the test result.

[0023] The auxiliary threading device 5 comprises a fixed seat 51, a push air cylinder 52, a connecting plate 53 and two line pressing rollers 54, the fixed seat 51 is arranged at the top of the cabinet 1, the push air cylinder 52 is fixed on the fixed seat 51, the connecting plate 53 is arranged on the output end of the push air cylinder 52, two line pressing rollers 54 are arranged adjacent to one side of the connecting plate 53 towards the visual module 4, and the two line pressing rollers 54 are respectively rotationally connected with the connecting plate 53, the push air cylinder 52 is electrically connected with the electric control device, the push air cylinder 52 pushes the connecting plate 53 to move downward, and the two line pressing rollers 54 press the yarn towards the needle, so that the yarn is straightened and passes through the needle under the support of the two line pressing rollers 54, thereby replacing manual threading and reducing the operation difficulty.

[0024] The abrasion testing equipment also comprises a base frame 101 and a stand 102 arranged in one body, the stand 102 is arranged on one side of the top of the base frame 101, the wire guiding device 8 is arranged on the stand 102, and the yarn winding device 9 is arranged on the base frame 101, so that the spatial positions of the wire guiding device 8 and the yarn winding device 9 are reasonably distributed, the yarn path is optimized, the yarn is smoothly wound, the base frame 101 and the stand 102 are arranged in one body, the structure is more stable, the vibration of the wire guiding device 8 and the yarn winding device 9 is reduced, and the influence on the abrasion test is avoided.

[0025] The side of the stand 102 towards the yarn winding device 9 is provided with a avoiding groove 103, the wire guiding device 8 comprises two guide rails 81, a concave sliding block 82, a wire guiding cylinder 83 and a linear stepping motor 84, the two guide rails 81 are arranged adjacent to each other in the avoiding groove 103, the concave sliding block 82 is slidably arranged on the two guide rails 81, the wire guiding cylinder 83 is transversely arranged on the concave sliding block 82, and the linear stepping motor 84 is arranged on the top of the stand 102, the concave sliding block 82 is connected with any output end of the linear stepping motor 84, the yarn passes through the wire guiding cylinder 83, the linear stepping motor 84 drives the concave sliding block 82 to move along the guide rail 81, drives the wire guiding cylinder 83 to move synchronously, guides the yarn to be orderly wound on the yarn winding device 9, avoids the yarn from being wound or accumulated, ensures the consistency of the winding tension, and avoids affecting the test result.

[0026] The bottom frame 101 comprises a bottom plate 104 and two vertical plates 105, the two vertical plates 105 are provided adjacent to the bottom plate 104, and the opposite sides of the two vertical plates 105 are respectively provided with a first clamping groove 106 and a second clamping groove 107, the take-up device 9 comprises a take-up motor 91, a driving 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 clamped on the two first clamping grooves 106, the chuck 93 is clamped on the two second clamping grooves 107, the bearing 94 is rotatably arranged in the chuck 93, the take-up drum 95 is arranged in the bearing 94, the driven roller 96 is sleeved on one end of the take-up drum 95, the driving roller 92 is arranged on the output end of the take-up motor 91, the transmission belt 97 is sleeved on the driving roller 92 and the driven roller 96, the two first clamping grooves 106 limit the movement of the take-up motor 91, the two second clamping grooves 107 limit 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, and the yarn is wound, and the bearing 94 is arranged to reduce the resistance between the take-up drum 95 and the chuck 93, so that the yarn is stably wound.

[0027] In the embodiment of the application, the bottom of the case 1 is provided with an ear plate, and a screw can pass through the ear plate to connect with an external frame body, so as to fix the wear testing equipment; the electric control device comprises an STM32 system, and the visual module 4 comprises a CCD camera; the clamping cylinder and the pushing cylinder 52 each comprise an electromagnetic valve, which is connected with an external air source through the electromagnetic valve, and the electric control device controls the communication of the electromagnetic valve.

[0028] A textile needle wear testing method is used for the wear testing equipment described above, and the specific steps are as follows: Step S1: fix the textile bobbin on the take-up stand, and pull the textile yarn to pass through two guide rollers, an auxiliary threading device, a threading hole and a guide device in sequence, and then wind the yarn on the take-up device, and fix the needle on the clamping device, to complete the preliminary preparation work; Step S2: set the rotation speed of the driving motor and the take-up motor and the number of rotation circles of the driving motor through the electric control device, start the wear testing equipment, the electric control device first controls the visual module to scan and record the appearance of the needle, then controls the auxiliary threading device to pass the textile yarn through the needle and then reset, and then controls the reciprocating moving device, the guide device and the take-up device to start the wear testing at the same time, the reciprocating moving device drives the needle to reciprocate along the set path, the guide device guides one end of the textile yarn to the take-up device for winding, and simulates the needle use environment; Step S3: when the driving motor reaches the multiple set rotation numbers in turn, the reciprocating moving device, the guide wire device and the take-up device stop running, the visual module scans and records the appearance of the worn knitting needle respectively, finally analyzes and compares the wear of the knitting needle, combines with the wear mechanism analysis, and obtains the service life of the knitting needle.

[0029] Specifically, after the textile bobbin is fixed on the creel, the yarn is wound on the take-up device after passing through two guide rollers, an auxiliary threading device, a threading hole and a guide device in turn, the yarn movement path is determined, the knitting needle is fixed on the clamping device at the same time, the preparation work is completed; then the rotation speed of the driving motor and the take-up motor and the multiple rotation numbers of the driving motor are set through the electric control device, wherein the rotation speed of the driving motor corresponds to the running speed of the knitting needle, the rotation speed of the take-up motor corresponds to the running speed of the yarn, the rotation numbers of the driving motor correspond to the movement times of the knitting needle, the auxiliary threading device presses the yarn onto the knitting needle, the driving motor drives the sliding block and the clamping device to move along the concave groove through the connecting rod, that is, the set path of the knitting needle is to move along the center axis of the concave groove, the guide device and the take-up device drive the yarn to move, and the use environment of the knitting needle is simulated. Whether the knitting needle needs to be replaced is judged according to whether the knitting needle is deformed or cracked, or the area ratio between the burr area and the yarn contact area of the knitting needle, in the present application, when the knitting needle is deformed, cracked or the wear depth of the knitting needle exceeds 50% of the thickness of the knitting needle, it is considered that the wear is serious and needs to be replaced in time, when the driving motor reaches each rotation number, the visual module scans and records the knitting needle at each stage respectively, analyzes and compares whether the knitting needle is deformed or cracked, the area ratio of the wear depth of the knitting needle and other wear data, so as to predict the service life of the knitting needle.

[0030] In the present application, the step of analyzing and comparing the needle wear amount is specifically: acquiring the three-dimensional topography of the contact between the needle and the yarn by the visual module 4, and 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 point with the median value of all pixel gray values in its neighborhood window. The specific processing steps include: (1) determining an odd size template; (2) boundary filling processing; (3) neighborhood array sorting; (4) median replacement. Using the median filtering algorithm can replace the median value of the gray values in the pixel neighborhood window with the original pixel value to achieve image smoothing, which has significant advantages in eliminating noise and pulse interference, while effectively preserving image edge features, avoiding the edge blur problem caused by linear filters; Next, the image is subjected to edge detection processing. The basic principle of edge detection is to use the gray difference of the image to identify the edge from the gradient (rate of change) of the image, that is, at the edge of the image, the gray value has changed significantly, which leads to an increase in the gradient of the image, while the gradient of other parts is very small. After image processing, coordinate systems are established for the needle images corresponding to each number of rotations, and the initial image of the needle is taken as a reference. By comparing and analyzing the edge data and coordinate missing data of the images before and after the needle wears, the wear characteristics of the needle are obtained, including the shape of the contact between the worn needle and the yarn, the wear depth and other information, so as to obtain the wear amount of the needle.

[0031] It can be understood that for those skilled in the art, equivalent replacements or changes can be made according to the technical solutions and inventive concepts of the present application, and all such changes or replacements shall fall within the protection scope of the present application.

Claims

1. A textile needle wear testing device, characterized in that: The invention comprises a chassis (1), an electric control device, a wire pay-off frame (2), two wire rollers (3), and a visual module (4) electrically connected to the electric control device, an auxiliary wire threading device (5), a clamping device (6), a reciprocating device (7), a wire guide device (8) and a wire take-up device (9), wherein the electric control device is arranged on the chassis (1), a partition plate (11) is provided in the middle of the chassis (1), a connecting hole (12) and a wire passing hole (13) are provided on the partition plate (11), the auxiliary wire threading device (5) and the two wire rollers (3) are arranged at the top of the chassis (1) along the same straight line direction, the auxiliary wire threading device (5) is arranged above the connecting hole (12), and the two wire rollers (3) are arranged above the auxiliary wire threading device (5). On both sides of the threading aid device (5), the wire pay-off frame (2) and the wire hole (13) are respectively arranged on both sides of the connecting hole (12) along the straight line direction where the two wire rollers (3) are located, the visual module (4) is adjacent to the connecting hole (12) and is arranged on the top of the partition plate (11), the clamping device (6) is slidably arranged in the connecting hole (12), the reciprocating device (7), the wire device (8) and the wire take-up device (9) are all arranged at the bottom of the chassis (1), the output end of the reciprocating device (7) is connected to the clamping device (6), the wire device (8) is arranged below the wire hole (13), and the wire take-up device (9) is arranged adjacent to the wire device (8).

2. A textile needle wear testing device according to claim 1, characterized in that: The clamping device (6) includes a clamping cylinder, and the reciprocating moving device (7) includes a concave groove (71), two slide grooves (72), a sliding block (73), two clamping strips (74), a driving motor (75), a turntable (76), a connecting rod (77) and a connecting assembly (78), wherein the concave groove (71) is provided at the bottom of the partition plate (11), one end of the concave groove (71) is connected to the connecting hole (12), the two slide grooves (72) are respectively provided on both sides of the concave groove (71), the sliding block (73) is slidably provided in the concave groove (71), and the clamping device (78) includes a concave groove (71), two slide grooves (72) and a sliding block (73) which are slidably provided in the concave groove (71). The tightening cylinder is arranged on the top of the sliding block (73), the two snap-fit ​​strips (74) are respectively arranged on both sides of the sliding block (73), the two slide grooves (72) and the two snap-fit ​​strips (74) are respectively snap-fitted in a one-to-one correspondence, the driving motor (75) is arranged at the bottom of the chassis (1), the turntable (76) is arranged on the output end of the driving motor (75), the connecting component (78) is offset and arranged on the side of the turntable (76) facing away from the driving motor (75), and the two ends of the connecting rod (77) are respectively hinged to the sliding block (73) and the connecting component (78).

3. A textile needle wear testing device according to claim 2, characterized in that: The connecting assembly (78) includes a plurality of pin-connecting holes (781) and pin-connecting columns (782). The plurality of pin-connecting holes (781) are all provided on the turntable (76). The distance between each pin-connecting hole (781) and the central axis of the turntable (76) is different. The pin-connecting column (782) is sequentially passed through any of the pin-connecting holes (781) and one end of the connecting rod (77).

4. A textile needle wear testing device according to claim 1, characterized in that: The pay-off frame (2) comprises a damping rotating shaft (21), a rotating cylinder (22) and a pressing plate (23), wherein the damping rotating shaft (21) is arranged 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), and the pressing plate (23) is threadedly connected to the other end of the rotating cylinder (22).

5. A textile needle wear testing device according to claim 1, characterized in that: The auxiliary threading device (5) includes a fixed seat (51), a pushing cylinder (52), a connecting plate (53) and two pressing rollers (54), wherein the fixed seat (51) is arranged at the top of the chassis (1), the pushing cylinder (52) is fixed on the fixed seat (51), the connecting plate (53) is arranged on the output end of the pushing cylinder (52), the two pressing rollers (54) are adjacently arranged on one side of the connecting plate (53) facing the visual module (4), the two pressing rollers (54) are respectively rotatably connected to the connecting plate (53), and the pushing cylinder (52) is electrically connected to the electronic control device.

6. A textile needle wear testing device according to claim 1, characterized in that: The wear testing device further comprises a base frame (101) and a stand frame (102) which are integrally formed, wherein the stand frame (102) is arranged on one side of the top of the base frame (101), the wire guide device (8) is arranged on the stand frame (102), and the wire take-up device (9) is arranged on the base frame (101).

7. A textile needle wear testing device according to claim 6, characterized in that: The vertical frame (102) is provided with an avoidance groove (103) on one side facing the wire-receiving device (9), and the wire device (8) includes two guide rails (81), a concave slider (82), a wire tube (83) and a linear stepping motor (84), the two guide rails (81) are adjacently arranged in the avoidance groove (103), the concave slider (82) is slidably mounted on the two guide rails (81), the wire tube (83) is transversely penetrated on the concave slider (82), the linear stepping motor (84) is arranged on the top of the vertical frame (102), and the concave slider (82) is connected to any output end of the linear stepping motor (84).

8. The textile needle wear testing device according to claim 6, characterized in that: The base frame (101) includes a bottom plate (104) and two vertical plates (105), the two vertical plates (105) are adjacently arranged on the bottom plate (104), and the two vertical plates (105) are provided with a first clamping groove (106) and a second clamping groove (107) on opposite sides. The wire-taking device (9) includes a wire-taking motor (91), an active roller (92), a chuck (93), a bearing (94), a wire-taking drum (95), a driven roller (96) and a transmission belt (97). The wire-taking motor (91) is clamped to The chuck (93) is clamped on the two first clamping grooves (106), the chuck (93) is clamped on the two second clamping grooves (107), the bearing (94) is rotatably arranged in the chuck (93), the wire take-up drum (95) is passed through the bearing (94), the driven roller (96) is sleeved on one end of the wire take-up drum (95), the active roller (92) is arranged on the output end of the wire take-up motor (91), and the transmission belt (97) is sleeved on the active roller (92) and the driven roller (96).

9. A textile needle wear testing method, characterized in that: The textile needle wear testing method is used for the wear testing device according to any one of claims 1 to 8, and the specific steps are as follows: Step S1: Fix the textile bobbin on the pay-off frame, pull the textile yarn through the two guide rollers, the auxiliary threading device, the thread hole and the guide device in sequence, and then wind it on the take-up device. At the same time, fix the knitting needle on the clamping device to complete the preliminary preparation work; Step S2: The speed of the driving motor and the take-up motor, as well as the number of rotations of the driving motor, are respectively set by the electronic control device, and the wear test equipment is turned on. The electronic control device first controls the visual module to scan and record the morphology of the knitting needle, then controls the auxiliary threading device to thread the textile yarn onto the knitting needle and then reset it. Subsequently, the reciprocating device, the guide wire device, and the take-up device are simultaneously controlled to start the wear test. The reciprocating device drives the knitting needle to reciprocate along the set path, and the guide wire device guides one end of the textile yarn to be wound onto the take-up device to simulate the use environment of the knitting needle. Step S3: When the driving motor reaches a set number of rotations in sequence, the reciprocating device, the wire guide device and the wire take-up device stop running, and the visual module scans and records the morphology of the worn knitting needles respectively. Finally, the wear amount of the knitting needles is analyzed and compared, and the service life of the knitting needles is obtained by combining the wear mechanism analysis.

Images