A kind of color spinning yarn tensile property detection device and method

Abstract

The present invention relates to the technical field of yarn performance detection, and specifically proposes a color-spun yarn tensile performance detection device and method, including: two support platforms, a horizontal tensile test mechanism, an end fixing mechanism and a pressure test mechanism. The color-spun yarn tensile performance detection device designed by the present invention realizes bidirectional tensile testing of the yarn under pressure in different directions and tests under pressure and tension at different positions and depths under tension by cooperating with the pressure test mechanism, the end fixing mechanism and the horizontal tensile test mechanism, simulating the stress conditions from multiple directions to which the yarn is subjected during actual use, detecting the tensile performance of the yarn when subjected to local stress at different positions, and comprehensively evaluating the tensile performance of the yarn, thereby improving the accuracy and authenticity of the yarn tensile performance detection, and also improving the practicality of the yarn tensile performance detection.

Description

Technical Field

[0001] The present invention relates to the technical field of yarn performance detection, and specifically provides a device and method for detecting the tensile performance of colored spun yarns. Background Technique

[0002] Colored spun yarn is a special textile material, which is characterized in that different colored fibers are mixed and then spun, and the finally formed yarn presents a unique mixed-color effect.

[0003] During the production and manufacturing process of colored spun yarns, tensile performance detection is required. Tensile performance testing can evaluate the breaking strength of the yarn, that is, the maximum load that the yarn can withstand under the action of force, which is crucial for ensuring that the yarn will not break easily during processing and use; at the same time, through tensile performance testing, the elastic recovery ability of the yarn can be understood, that is, whether the yarn can return to its original length after being stretched, which is particularly important for products that require good elasticity (such as knitted clothing).

[0004] However, at present, the tensile performance of colored spun yarns is only detected based on the linear stretching direction or the up-and-down elastic mode. In actual applications, the yarn may be subjected to forces from multiple directions, and the test results in a single direction may not fully reflect its performance in a complex stress environment, thus unable to comprehensively evaluate the performance of the yarn in multiple directions; and the linear stretching test can only evaluate the overall performance of the yarn and is difficult to detect local non-uniformities. Although the up-and-down elastic test can partially solve this problem, the test points are single, and it is still difficult to truly detect the tensile performance of the yarn. Summary of the Invention

[0005] In view of the above problems, the embodiments of the present application provide a device and method for detecting the tensile performance of colored spun yarns to solve the technical problems in the related art.

[0006] To achieve the above object, the embodiments of the present application provide the following technical solution: A device for detecting the tensile performance of colored spun yarns, comprising: two support platforms, both of the two support platforms are in a U-shaped structure with opposite openings, and an end fixing mechanism for fixing the ends of the yarn and a horizontal stretching test mechanism for driving the end fixing mechanism to perform tensile testing on the yarn are jointly installed on the tops of the two support platforms.

[0007] A fixing seat is jointly installed on the rear side walls of the two support platforms, and a pressing test mechanism is installed on the fixing seat.

[0008] The end fixing mechanism includes two supporting brackets. A pre-limiting group for pre-limiting the end of the yarn is installed on the top of the supporting brackets. A zipper group for locking the pre-limiting group is installed between the two supporting platforms. The top of one of the supporting platforms is horizontally slidably connected with a C-shaped seat. One of the supporting brackets is horizontally slidably connected between two opposite sections of the C-shaped seat. The other supporting bracket is slidably connected to the other supporting platform. A deformation size display group is installed between the C-shaped seat and the supporting bracket connected thereto.

[0009] In a possible implementation manner, the horizontal stretching test mechanism includes a stretching driving source (such as a cylinder or an electric telescopic rod) installed on the top of the supporting platform through a base. L-shaped seats are installed at the ends of the C-shaped seat and the supporting bracket slidably connected to the supporting platform, and the L-shaped seats are connected to the corresponding stretching driving sources.

[0010] In a possible implementation manner, the pre-limiting group includes lifting rods that are connected to the supporting bracket and slide up and down and are evenly arranged along its length direction. A pressing piece is installed on the top of the lifting rod. The bottom of the lifting rod slidably penetrates through the supporting bracket and is sequentially installed with an ear plate and a limiting piece. A stretching spring sleeved on the lifting rod is installed between the ear plate and the bottom of the supporting bracket. The end of the yarn is wound around the lifting rod and is located between the supporting bracket and the pressing piece.

[0011] In a possible implementation manner, the zipper group includes two lifting seats that are commonly connected between the two supporting platforms and slide up and down and are arranged along its width direction. A pulling plate is slidably sleeved on a plurality of lifting rods connected to the same supporting bracket. The two pulling plates are horizontally slidably connected between the two lifting seats, and the pulling plate is located between the ear plate and the limiting piece.

[0012] The pressing test mechanism includes a connecting frame fixedly connected to the fixed seat. The top of the connecting frame is horizontally slidably connected with a connecting plate. A sliding driving source (such as an electric slider) that slides along the length direction of the connecting frame is installed on the connecting plate. A vertically sliding inverted T-shaped frame is connected to the connecting plate. A connecting shaft is rotatably installed at the lower end of the horizontal section of the inverted T-shaped frame. A height adjustment group is installed at the top of the inverted T-shaped frame. A return spring sleeved on the vertical section of the inverted T-shaped frame is installed between the height adjustment group and the connecting plate. A pressing driving member that presses the inverted T-shaped frame up and down is installed on the top of the fixed seat.

[0013] In a possible implementation manner, a limiting pressing roller that is rotatably sleeved on the connecting shaft and is evenly arranged along its axial direction is provided. The limiting pressing roller is an I-shaped wheel. The horizontal section of the limiting pressing roller is located above the yarn and the yarn is located between the two vertical sections of the limiting pressing roller.

[0014] In a possible implementation manner, the height adjustment group includes a supplementary seat installed at the top of the vertical section of the inverted T-shaped frame. A reset spring is connected to the bottom of the supplementary seat. A receiving groove extending to the vertical section of the inverted T-shaped frame is provided at the center of the top of the supplementary seat. A pressing frame is slidably connected in the receiving groove. The pressing frame has an inverted U-shaped structure. Limiting grooves symmetrically arranged along its length direction are provided at the top of the supplementary seat. Sliders are slidably connected in the limiting grooves. A swing rod is hinged between the sliders and the pressing frame. A bidirectional screw threadedly engaged with the sliders is rotatably connected between the two limiting grooves. The bidirectional screw passes through between the two vertical sections of the pressing frame.

[0015] In a possible implementation manner, the deformation size display group includes a displacement locking assembly and uniformly arranged tension and retraction springs installed between a C-shaped seat and a supporting bracket connected thereto. A size scale is provided at the top of one of the horizontal sections of the C-shaped seat parallel to the yarn. A pointer matched with the size scale is installed on the supporting bracket.

[0016] In a possible implementation manner, the displacement locking assembly includes a guiding groove provided in the middle section of the C-shaped seat. A guide plate is installed on the supporting bracket connected to the C-shaped seat. The guide plate slidably penetrates through the guiding groove. A locking screw is installed at the top of the C-shaped seat. After passing through the guiding groove, the locking screw is rotatably installed with a pressing lock plate. And the locking screw is connected to the C-shaped seat in a threaded engagement manner. The pressing lock plate is slidably connected to the guiding groove up and down.

[0017] In a possible implementation manner, a rubber gasket is installed at the bottom of the pressing lock plate. The rubber gasket is used to increase the friction between the pressing lock plate and the guide plate.

[0018] The present invention also provides a method for detecting the tensile properties of colored spun yarns, including the following steps: S1. Sampling and fixing, selecting multiple yarns of a certain length, and fixing the two ends of the yarns through an end fixing mechanism.

[0019] S2. Tensile test, through the cooperation of the end fixing mechanism, the horizontal tensile test mechanism and the pressing test mechanism, a two-way tensile test is carried out on the yarn under the pressing deformation at different positions until the yarn breaks in two-way tension each time. Through the analysis of the maximum tensile load before the yarn breaks multiple times, the tensile strength of the yarn is determined.

[0020] S3. Elasticity test, through the cooperation of the end fixing mechanism and the pressing test mechanism, fix the two ends of the yarn and make the yarn in a straight state. Then, the pressing test mechanism presses the yarn at different positions and different depths. The yarn generates deformations at different positions and different tensile forces. After the test is completed, through the cooperation of the C-shaped seat, the supporting bracket thereon and the deformation size display group, observe whether the yarn can return to its original length after pressing and stretching, and judge the elastic recovery ability of the detected yarn.

[0021] S4. Obtaining the result, the tensile properties of the yarn are evaluated by the tensile strength and elastic recovery capacity of the yarn. If the tensile properties of the yarn obtained by the evaluation are within the allowable range, it means that the tensile properties of the yarn are qualified, otherwise it is unqualified.

[0022] The above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. A color-spun yarn tensile performance testing device designed by the present invention, through the cooperation of a pressure testing mechanism, an end fixing mechanism and a horizontal tensile testing mechanism, can realize bidirectional tensile testing of the yarn under pressure at different positions and testing under pressure and stretching at different positions and depths under a tensile state, simulating the force conditions from multiple directions that the yarn is subjected to during actual use, detecting the tensile performance of the yarn when locally stressed at different positions, and comprehensively evaluating the tensile performance of the yarn, thereby improving the accuracy and authenticity of the yarn tensile performance detection, and also improving the practicability of the yarn tensile performance detection.

[0023] 2. The present invention cooperates with the end fixing mechanism and the pressure testing mechanism. The pressure testing mechanism presses down the yarn at different positions and depths to detect the elastic recovery ability of the yarn, making the tensile elastic performance results of the yarn more intuitive and accurately discovering the local unevenness of the yarn.

[0024] 3. When testing the yarn, the present invention first pre-limits the two ends of the yarn through the pre-limiting group, and then locks the two ends of the yarn together through the zipper group, thereby improving the convenience of fixing the ends of the yarn during testing, and further improving the convenience of testing the tensile properties of the yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the tensile performance testing device of the present invention.

[0027] Figure 2 The present invention Figure 1 A local enlarged schematic diagram of point A.

[0028] Figure 3 The present invention Figure 1 A partial enlarged schematic diagram of point B.

[0029] Figure 4 It is a three-dimensional structural schematic diagram of the pressure testing mechanism of the present invention.

[0030] Figure 5 is the main sectional view of the present invention Figure 1

[0031] Figure 6 is the present invention Figure 5 Schematic diagram of partial enlargement at position C of the present invention

[0032] Figure 7 is the schematic diagram of the biaxial tensile test of the yarn of the present invention under pressing at different positions

[0033] Figure 8 is the schematic diagram of the elastic performance test of the yarn of the present invention when both ends are fixed and immovable after being straightened and are pressed at different positions

[0034] Reference numerals: 1, support table; 2, end fixing mechanism; 20, bearing bracket; 21, pre-limiting group; 210, lifting rod; 211, pressing piece; 212, ear plate; 213, limiting piece; 214, tension spring; 22, zip group; 220, lifting seat; 221, pulling plate; 23, C-shaped seat; 24, deformation size display group; 240, retracting spring; 241, size scale; 242, pointer; 250, guiding groove; 251, guiding plate; 252, locking screw; 253, pressing lock plate; 254, rubber gasket; 3, horizontal tensile test mechanism; 30, L-shaped seat; 4, fixing seat; 5, pressing test mechanism; 50, connecting frame; 51, connecting plate; 52, inverted T-shaped frame; 53, connecting shaft; 530, limiting pressing roller; 54, height adjusting group; 540, supplementary seat; 541, receiving groove; 542, pressing frame; 543, limiting groove; 544, slider; 545, swing rod; 546, bidirectional screw; 55, return spring; 56, downward pressing driving member; 6, yarn Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention

[0036] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments

[0037] Refer to Figure 1 ​, A device for detecting the tensile properties of colored spun yarns, comprising: two support platforms 1, both of the two support platforms 1 are in a U-shaped structure with opposite openings, and a terminal fixing mechanism 2 for fixing the ends of the yarn 6 and a horizontal tensile testing mechanism 3 for driving the terminal fixing mechanism 2 to conduct tensile tests on the yarn 6 are jointly installed on the tops of the two support platforms 1.

[0038] Refer to Figure 1 , A fixing seat 4 is jointly installed on the rear side walls of the two support platforms 1, and a pressing test mechanism 5 is installed on the fixing seat 4.

[0039] Refer to Figure 1 And Figure 2 , The terminal fixing mechanism 2 includes two supporting brackets 20. A pre-limiting group 21 for pre-limiting the ends of the yarn 6 is installed on the top of the supporting bracket 20. A zip group 22 for locking the pre-limiting group 21 is installed between the two support platforms 1. A U-shaped seat 23 is horizontally slidably connected to the top of one of the support platforms 1. One of the supporting brackets 20 is horizontally slidably connected between two opposite sections of the U-shaped seat 23, and the other supporting bracket 20 is slidably connected to the other support platform 1. A deformation size display group 24 is installed between the U-shaped seat 23 and the connected supporting bracket 20.

[0040] Refer to Figure 1 And Figure 7 , When detecting the tensile strength of the yarn 6, the two ends of the yarn 6 are fixed through the terminal fixing mechanism 2. At the same time, the pressing test mechanism 5 presses down on the yarn 6, making the yarn 6 in a pressed and inclined state in a certain direction. Then, the horizontal tensile testing mechanism 3 drives the terminal fixing mechanism 2 to apply tensile forces to the two ends of the yarn 6, and conducts a two-way tensile test on the yarn 6 until the yarn 6 breaks, so as to measure the maximum tensile load before the yarn 6 breaks in a pressed direction.

[0041] In order to obtain more reliable detection results and ensure the accuracy of the detection results, the yarn 6 can be pressed at different positions by adjusting the position of the pressing test mechanism 5, and a two-way tensile test is conducted on the yarn 6 until the yarn 6 breaks, so as to simulate the force conditions of the yarn 6 being pressed and inclined and two-way stretched at different positions during use. The tensile properties of the yarn 6 are analyzed based on the results of multiple tensile property tests, improving the comprehensiveness of the detection of the tensile properties of the yarn 6.

[0042] Refer to Figure 1, the horizontal stretching test mechanism 3 includes a stretching driving source (such as a cylinder, an electric telescopic rod, etc.) installed on the top of the support table 1 through a base. Both ends of the C-shaped seat 23 and the supporting bracket 20 slidably connected to the support table 1 are provided with L-shaped seats 30. The L-shaped seats 30 are connected to the corresponding stretching driving sources. By driving the corresponding L-shaped seats 30, the supporting brackets 20 and the C-shaped seats 23 connected to the L-shaped seats 30 by the stretching driving source to move, so as to apply tensile forces to both ends of the yarn 6, detect the bidirectional stretching test of the yarn 6 under the pressing deformation at different positions until the yarn 6 breaks. In addition, in cooperation with an existing microscope camera or a high-speed camera, record the starting stretching time and the time at the moment of fracture of multiple yarns 6 between the two end fixing mechanisms 2, and then cooperate with the video display of the existing microscope camera or high-speed camera and the stretching driving source to obtain the average tensile strength of the yarn 6 under the pressing deformation at the same position.

[0043] Refer to Figure 1 And Figure 3 , the pre-limiting group 21 includes lifting rods 210 that are connected to the supporting bracket 20 and slide up and down and are evenly arranged along its length direction. A pressing piece 211 is installed at the top of the lifting rod 210. The bottom of the lifting rod 210 slidably penetrates through the supporting bracket 20 and is successively provided with an ear plate 212 and a limiting piece 213. A stretching spring 214 sleeved on the lifting rod 210 is installed between the ear plate 212 and the bottom of the supporting bracket 20. The end of the yarn 6 is wound around the lifting rod 210 and is located between the supporting bracket 20 and the pressing piece 211.

[0044] When fixing the end of the yarn 6, first push the lifting rod 210 to drive the pressing piece 211 to move upward, then wind the yarn 6 around the lifting rod 210, and then release the lifting rod 210. The lifting rod 210 moves downward under the elastic force of the stretching spring 214 until the pressing piece 211 presses the yarn 6 against the supporting bracket 20, so as to realize the preliminary pre-fixing of the end of the yarn 6, which is convenient for uniformly pressing and fixing both ends of the yarn 6 later.

[0045] Refer to Figure 1 , Figure 3 , Figure 5 And Figure 6 , the zip group 22 includes two lifting seats 220 that are commonly connected between the two support tables 1 and slide up and down and are arranged along their width direction. A pulling plate 221 is slidably sleeved on the multiple lifting rods 210 connected to the same supporting bracket 20. The two pulling plates 221 are horizontally slidably connected between the two lifting seats 220, and the pulling plate 221 is located between the ear plate 212 and the limiting piece 213.

[0046] After both ends of multiple yarns 6 are pre-fixed, the lifting seat 220 is driven to move downward by an external driving source (such as an electric slider). The lifting seat 220 drives the pulling plate 221 to move downward. When the pulling plate 221 abuts against the limiting piece 213, the pulling plate 221 presses against the limiting piece 213 to drive the lifting rod 210 and the pressing piece 211 to move downward, so that the pressing piece 211 tightly presses the end of the yarn 6 against the supporting bracket 20, thereby realizing the synchronous pressing and fixing of both ends of multiple yarns 6, improving the convenience of fixing the ends of the yarn 6, and further improving the efficiency of the tensile property detection of the yarn 6.

[0047] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 8 , the pressing test mechanism 5 includes a connecting frame 50 fixedly connected to the fixed seat 4. A connecting plate 51 is horizontally slidably connected to the top of the connecting frame 50. A sliding driving source (such as an electric slider) that slides along the length direction of the connecting frame 50 is installed on the connecting plate 51. A vertically sliding inverted T-shaped frame 52 is connected to the connecting plate 51. A connecting shaft 53 is rotatably installed at the lower end of the horizontal section of the inverted T-shaped frame 52. A height adjustment group 54 is installed at the top of the inverted T-shaped frame 52. A return spring 55 sleeved on the vertical section of the inverted T-shaped frame 52 is installed between the height adjustment group 54 and the connecting plate 51. A pressing driving member 56 that presses the inverted T-shaped frame 52 downward by sliding up and down is installed on the top of the fixed seat 4.

[0048] Refer to Figure 1 , Figure 4 , Figure 5 and Figure 8 , when testing the elastic performance of the yarn 6, the two ends of the yarn 6 are fixed by the end-fixing mechanism 2 and the yarn 6 is straightened. Then, through the cooperation of the height adjustment group 54, the pressing driving member 56 and the horizontal sliding of the connecting plate 51, the yarn 6 in the stretched state is pressed at different positions and different depths. After that, the pressing test mechanism 5 resets. By cooperating with the C-shaped seat 23, the supporting bracket 20 thereon and the deformation size display group 24, it is observed whether the yarn 6 can return to its original length after being pressed and stretched, so as to detect the elastic recovery ability of the yarn 6.

[0049] In summary, through the cooperation of the pressing test mechanism 5, the end-fixing mechanism 2 and the horizontal stretching test mechanism 3, a two-way stretching test of the yarn 6 under pressing at different positions is realized, and a test is carried out under pressing and stretching at different positions and different depths in the stretched state, simulating the force conditions from multiple directions that the yarn 6 receives during actual use, comprehensively and comprehensively evaluating the tensile performance of the yarn 6, and further improving the accuracy of the tensile performance detection of the yarn 6.

[0050] Refer to Figure 1 and Figure 4, a limiting abutting roller 530 is rotatably sleeved on the connecting shaft 53 and is uniformly arranged along its axial direction. The limiting abutting roller 530 is an I-shaped wheel. The horizontal section of the limiting abutting roller 530 is located above the yarn 6, and the yarn 6 is located between the two vertical sections of the limiting abutting roller 530. This not only realizes the limitation of the yarn 6 by the limiting abutting roller 530 and avoids the problem that the yarn 6 deviates during the detection process and affects the detection accuracy, but also reduces the friction force when the single yarn 6 is stretched, thereby improving the accuracy of the detection of the stretching performance of the yarn 6.

[0051] Refer to Figure 1 , Figure 4 and Figure 5 , the height adjustment group 54 includes a supplementary seat 540 installed at the top of the vertical section of the inverted T-shaped frame 52. The return spring 55 is connected to the bottom of the supplementary seat 540. A receiving groove 541 extending to the vertical section of the inverted T-shaped frame 52 is opened at the center of the top of the supplementary seat 540. A resisting frame 542 is slidably connected in the receiving groove 541. The resisting frame 542 has an inverted U-shaped structure. Limiting grooves 543 are symmetrically arranged along the length direction at the top of the supplementary seat 540. A slider 544 is slidably connected in the limiting grooves 543. A swing rod 545 is hinged between the slider 544 and the resisting frame 542. A bidirectional screw 546 that is in threaded cooperation with the slider 544 is rotatably connected between the two limiting grooves 543. The bidirectional screw 546 passes through between the two vertical sections of the resisting frame 542.

[0052] When it is necessary to adjust the pressing depth of the yarn 6, by rotating the bidirectional screw 546, the bidirectional screw 546 drives the two sliders 544 to move through the threaded cooperation with the two sliders 544. The slider 544 pushes the resisting frame 542 upward or pulls the resisting frame 542 downward through the swing rod 545, so as to adjust the distance between the top of the resisting frame 542 and the downward pressing driving member 56, and realize that when the downward pressing driving member 56 descends to the same height, the driving connecting shaft 53 presses and deforms the yarn 6 at different depths, simulating the deformation of the yarn 6 under different pressing depths during the actual use process, thereby improving the comprehensiveness of the elastic deformation detection of the yarn 6.

[0053] Refer to Figure 1 and Figure 2 , the deformation size display group 24 includes a displacement locking component installed between the C-shaped seat 23 and the supporting bracket 20 connected thereto and uniformly arranged tension springs 240. A size scale 241 is provided at the top of one of the horizontal sections of the C-shaped seat 23 that is parallel to the yarn 6. A pointer 242 that cooperates with the size scale 241 is installed on the supporting bracket 20.

[0054] In the initial state, both ends of the yarn 6 are fixed by the end-fixing mechanism 2. At this time, the displacement locking assembly no longer limits the supporting bracket 20 connected to the C-shaped seat 23. Under the action of the tension spring 240, the supporting bracket 20 straightens the yarn 6. Then, the displacement locking assembly locks the position of the supporting bracket 20 on the C-shaped seat 23 and records the scale value pointed to by the pointer 242 at this time. After that, the yarn 6 is subjected to pressing deformation at different positions and depths in the stretched state. After the detection is completed, the pressing test mechanism 5 resets and drives the displacement locking assembly to no longer limit and lock the supporting bracket 20 connected to the C-shaped seat 23. At this time, observe whether the tension spring 240 will pull the supporting bracket 20 connected to it to move, and whether the moving range is within the allowable elastic deformation amount of the yarn 6, so as to judge whether the elastic recovery ability of the yarn 6 is qualified. If the moving range is within the allowable elastic deformation amount of the yarn 6, it means that the elastic recovery ability of the yarn 6 is qualified; otherwise, it is unqualified.

[0055] Refer to Figure 1 、 Figure 5 and Figure 6 The displacement locking assembly includes a guide groove 250 opened in the middle section of the C-shaped seat 23. A guide plate 251 is installed on the supporting bracket 20 connected to the C-shaped seat 23. The guide plate 251 slides through the guide groove 250. A locking screw 252 is installed on the top of the C-shaped seat 23. After passing through the guide groove 250, the locking screw 252 is rotatably installed with a pressure locking plate 253, and the locking screw 252 is connected to the C-shaped seat 23 by a threaded fit. The pressure locking plate 253 is slidably connected to the guide groove 250 up and down.

[0056] When testing the tensile performance of the yarn 6, the locking screw 252 drives the pressure locking plate 253 to press against the guide plate 251, thereby locking the position of the C-shaped seat 23 and the supporting bracket 20 connected thereto, so as to facilitate the horizontal tensile test mechanism 3 to perform a two-way tensile performance test on the yarn 6 at different pressing positions; when testing the elasticity of the yarn 6, the locking screw 252 first locks the guide plate 251 through the pressure locking plate 253. After the test is completed, the locking screw 252 drives the pressure locking plate 253 to move upward and no longer presses and locks the guide plate 251. If the elastic recovery ability of the yarn 6 is poor, the tension spring 240 pulls the supporting bracket 20 connected to it to move towards the locking screw 252 by its elastic force, and records the scale value pointed to by the pointer 242 at this time. Then, check whether the moving range is within the elastic deformation amount of the yarn 6, so as to judge whether the elastic recovery ability of the yarn 6 is qualified.

[0057] Refer to Figure 6 A rubber gasket 254 is installed at the bottom of the pressure locking plate 253. The rubber gasket 254 is used to increase the friction between the pressure locking plate 253 and the guide plate 251, and avoid the problem that the guide plate 251 slides during the detection process, which affects the accuracy of the tensile performance detection of the yarn 6.

[0058] Refer to Figure 1-Figure 8 Figure 1-Figure 8

[0059] S2. Tensile test: Through the cooperation of the end fixing mechanism 2, the horizontal tensile test mechanism 3 and the pressing test mechanism 5, the yarn 6 is subjected to a two-way tensile test under the pressing deformation at different positions until the yarn 6 breaks in two-way tension each time. Through the analysis of the maximum tensile load before the break of the yarn 6 for multiple times, the tensile strength of the yarn 6 is determined.

[0060] S3. Elasticity test: Through the cooperation of the end fixing mechanism 2 and the pressing test mechanism 5, the two ends of the yarn 6 are fixed and the yarn 6 is in a straightened state. Then, the pressing test mechanism 5 presses the yarn 6 at different positions and different depths, and the yarn 6 generates deformations at different positions and different tensile forces. After the test is completed, through the cooperation of the C-shaped seat 23, the supporting bracket 20 thereon and the deformation size display group 24, it is observed whether the yarn 6 can return to its original length after the pressing and stretching, and the elastic recovery ability of the yarn 6 is judged.

[0061] S4. Obtain the result: The tensile performance of the yarn 6 is evaluated through the tensile strength ability and the elastic recovery ability of the yarn 6, and then compared with the standard tensile performance range of the yarn 6. If the tensile performance of the yarn 6 evaluated is within the allowable range, it means that the tensile performance of the yarn 6 is qualified, otherwise it is unqualified.

[0062] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0063] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0064] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A device for detecting tensile properties of colored spun yarn, characterized in that: Including: Two support platforms (1), both of the two support platforms (1) are in a U-shaped structure with opposite openings, and an end-fixing mechanism (2) for fixing the ends of the yarn (6) and a horizontal tensile testing mechanism (3) for driving the end-fixing mechanism (2) to perform tensile testing on the yarn (6) are commonly installed on the tops of the two support platforms (1); A fixing base (4) is commonly installed on the rear side walls of the two support platforms (1), and a pressing testing mechanism (5) is installed on the fixing base (4); The end-fixing mechanism (2) includes two bearing brackets (20), a pre-limiting group (21) for pre-limiting the ends of the yarn (6) is installed on the top of the bearing bracket (20), a zip-lock group (22) for locking the pre-limiting group (21) is installed between the two support platforms (1), a U-shaped seat (23) is horizontally slidably connected to the top of one of the support platforms (1), one of the bearing brackets (20) is horizontally slidably connected between two opposite sections of the U-shaped seat (23), the other bearing bracket (20) is slidably connected to the other support platform (1), and a deformation size display group (24) is installed between the U-shaped seat (23) and the bearing bracket (20) connected thereto; The pressing testing mechanism (5) includes a connecting frame (50) fixedly connected to the fixing base (4), a connecting plate (51) is horizontally slidably connected to the top of the connecting frame (50), an inverted T-shaped frame (52) that slides up and down is connected to the connecting plate (51), a connecting shaft (53) is rotatably installed at the lower end of the horizontal section of the inverted T-shaped frame (52), a height adjustment group (54) is installed on the top of the inverted T-shaped frame (52), a return spring (55) sleeved on the vertical section of the inverted T-shaped frame (52) is installed between the height adjustment group (54) and the connecting plate (51), and a downward pressing driving member (56) that slides up and down to press the inverted T-shaped frame (52) is installed on the top of the fixing base (4); The deformation size display group (24) includes a displacement locking assembly installed between the U-shaped seat (23) and the bearing bracket (20) connected thereto and uniformly arranged tension and compression springs (240), a size scale (241) is arranged on the top of one of the horizontal sections of the U-shaped seat (23) parallel to the yarn (6), and a pointer (242) that cooperates with the size scale (241) is installed on the bearing bracket (20); The displacement locking assembly includes a guiding groove (250) opened in the middle section of the U-shaped seat (23), a guiding plate (251) is installed on the bearing bracket (20) connected to the U-shaped seat (23), the guiding plate (251) slidably penetrates through the guiding groove (250), a locking screw (252) is installed on the top of the U-shaped seat (23), the locking screw (252) penetrates through the guiding groove (250) and then a pressing lock plate (253) is rotatably installed, and the locking screw (252) is connected to the U-shaped seat (23) in a threaded fit manner, and the pressing lock plate (253) is slidably connected to the guiding groove (250) up and down.

2. A device for detecting tensile properties of colored spun yarn according to claim 1, characterized in that: The height adjustment group (54) comprises a supplementary seat (540) mounted on the top of the vertical section of the inverted T-shaped frame (52); a return spring (55) is connected to the bottom of the supplementary seat (540); a receiving groove (541) extending to the vertical section of the inverted T-shaped frame (52) is provided at the top center of the supplementary seat (540); a support frame (542) is slidably connected in the receiving groove (541); the support frame (542) is in an inverted U-shaped structure; a limiting groove (543) symmetrically arranged along the length direction of the supplementary seat (540) is provided on the top; a slider (544) is slidably connected in the limiting groove (543); a swing rod (545) is hinged between the slider (544) and the support frame (542); a bidirectional screw (546) threadedly matched with the slider (544) is rotatably connected between the two limiting grooves (543); the bidirectional screw (546) passes through two vertical sections of the support frame (542).

3. A device for detecting tensile properties of colored spun yarn according to claim 1, characterized in that: The pre-limiting group (21) comprises a lifting rod (210) connected to a support frame (20) and sliding up and down and evenly arranged along its length direction; a pressing plate (211) is installed on the top of the lifting rod (210); an ear plate (212) and a limiting plate (213) are installed in sequence after the bottom of the lifting rod (210) slides through the support frame (20); a tension spring (214) sleeved on the lifting rod (210) is installed between the ear plate (212) and the bottom of the support frame (20); an end of the yarn (6) is wound on the lifting rod (210) and is located between the support frame (20) and the pressing plate (211).

4. A device for detecting tensile properties of colored spun yarn according to claim 3, characterized in that: The zipper assembly (22) comprises two lifting seats (220) which are connected to the two support platforms (1) and slide up and down and are arranged along the width direction thereof; a plurality of lifting rods (210) connected to the same support frame (20) are provided with a pull plate (221) which slides together; the two pull plates (221) are connected to the two lifting seats (220) in a horizontally sliding manner, and the pull plates (221) are located between the ear plates (212) and the limiting plates (213).

5. A device for detecting tensile properties of colored spun yarn according to claim 1, characterized in that: The horizontal tensile testing mechanism (3) comprises a tensile driving source installed on the top of a support platform (1) through a base, and an L-shaped seat (30) is installed on the end of a support bracket (20) slidably connected to the support platform (1), and the L-shaped seat (30) is connected to the corresponding tensile driving source.

6. A device for detecting tensile properties of colored spun yarn according to claim 1, characterized in that: The connecting shaft (53) is rotatably sleeved with a limiting roller (530) evenly arranged along its axial direction, the limiting roller (530) is an I-shaped wheel, the horizontal section of the limiting roller (530) is located above the yarn (6), and the yarn (6) is located between the two vertical sections of the limiting roller (530).

7. A device for detecting tensile properties of colored spun yarn according to claim 1, characterized in that: A rubber gasket (254) is installed at the bottom of the locking plate (253).

8. A method for detecting tensile properties of a colored spun yarn, using the device for detecting tensile properties of a colored spun yarn as claimed in claim 1, comprising the following steps: S1. Sampling and fixing, selecting a plurality of yarns (6) of a certain length, and fixing both ends of the yarn (6) by an end fixing mechanism (2); S2. Tensile test: Through the cooperation of the end-fixing mechanism (2), the horizontal tensile test mechanism (3) and the pressing test mechanism (5), a two-way tensile test is carried out on the yarn (6) under the pressing deformation at different positions until the yarn (6) is broken by two-way tension each time. Through the analysis of the maximum tensile load before the break of the yarn (6) for multiple times, the tensile strength of the yarn (6) is determined. S3. Elasticity test: Through the cooperation of the end-fixing mechanism (2) and the pressing test mechanism (5), the two ends of the yarn (6) are fixed and the yarn (6) is in a straightened state. Then, the pressing test mechanism (5) presses the yarn (6) at different positions and different depths, and the yarn (6) generates deformations at different positions and different tensile forces. After the test is completed, through the cooperation of the C-shaped seat (23), the supporting bracket (20) thereon and the deformation size display group (24), observe whether the yarn (6) can return to its original length after pressing and stretching, and judge the elastic recovery ability of the tested yarn (6). S4. Obtain the result: The tensile performance of the yarn (6) is evaluated through the tensile strength ability and the elastic recovery ability of the yarn (6). If the tensile performance of the yarn (6) obtained by the evaluation is within the allowable range, it means that the tensile performance of the yarn (6) is qualified; otherwise, it is unqualified.

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