A yarn elastic tension testing frame with a positioning clamp assembly

Abstract

A yarn elastic tension testing frame with a positioning clamp assembly belongs to the field of yarn elasticity performance testing technology. To address the problem that yarn elastic tension testing frames are typically only applicable to yarns with good elasticity, making it difficult to determine the elasticity of yarns with poor elasticity, this invention features a movable drive turntable inserted into the upper end of one end of the base. A fixed clamping block is fixedly installed in the middle of the other end of the base's top surface. A sliding clamping block is installed in the middle of the top surface of the base, and a T-shaped threaded slider is fixedly installed in the middle of the bottom surface of the sliding clamping block. A drive rod is fixedly installed on the outer wall of the middle of the other end of the upper side of the sliding clamping block, and a drive finger block is fixedly installed on the outer wall of the middle of one side of the lower end of the sliding clamping block. A conversion indicator assembly is installed in the inner cavity of one side of the upper end of the base. This invention improves the adaptability of the device, enabling it to test and read values ​​for both yarns with good and poor elasticity.

Description

Technical Field

[0001] This invention relates to the field of yarn elasticity performance testing technology, specifically to a yarn elasticity tension testing frame with a positioning clamp assembly. Background Technology

[0002] Yarn is a textile product made from various textile fibers processed to a certain fineness. It is used for weaving, rope making, thread making, knitting, and embroidery, and is divided into short fiber yarn and continuous filament yarn. In daily life, because the requirements for the elasticity, hardness, and other properties of fabrics and other textile yarn products vary in different situations, it is necessary to conduct performance testing on the yarn before the production of finished yarn products in order to select yarns suitable for different usage scenarios.

[0003] Currently, when testing the elasticity tension of yarns, due to the different elastic properties of the yarns, some yarns stretch a large distance while others stretch a small distance. Judging the elasticity tension of yarns by measuring the stretching distance is usually only applicable to yarns with good elasticity properties, and the test has low adaptability. For yarns with poor elasticity properties, it is difficult to judge the elasticity properties of the yarn.

[0004] To address the above issues, a yarn elastic tension testing frame with a positioning clamp assembly is proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a yarn elastic tension testing frame. By using this device, the problem in the background is that the yarn elastic tension testing frame is usually only applicable to yarns with good elasticity, resulting in low testing adaptability. For yarns with poor elasticity, it is difficult to determine the elasticity performance.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a yarn elastic tension testing frame with a positioning clamping assembly, comprising a base, a drive turntable movably installed at the upper end of one end of the base, a fixed clamping block fixedly installed at the middle of the other end of the top surface of the base, a sliding clamping block installed at the middle of the top surface of the base, a T-shaped threaded slider fixedly installed at the middle of the bottom surface of the sliding clamping block, and the T-shaped threaded slider being threadedly fitted onto the output end of the drive turntable; a drive rod fixedly installed on the outer wall of the middle of the other end of the upper end of the sliding clamping block; and a drive rod fixedly installed at the lower end of the sliding clamping block. A drive finger block is fixedly installed on the outer wall of the middle part of one side of the base, and a conversion indicator assembly is installed in the inner cavity of one side of the upper end of the base; the drive finger block includes an indicator sleeve block and a drive pressure rod installed through the middle of the indicator sleeve block; the conversion indicator assembly includes a large air storage telescopic rod and a small air intake telescopic rod fixedly installed in the inner cavity of the upper end of one side of the base, and the large air storage telescopic rod is fixedly installed in the inner cavity of the upper end of the middle part of one side of the base, and an L-shaped indicator block is fixedly installed at the output end of the small air intake telescopic rod, and the lower end of the drive pressure rod is located directly above the output end of the large air storage telescopic rod.

[0007] Furthermore, a T-shaped top groove is provided at the middle of one end of the top surface of the base, a connecting bearing is embedded in the outer wall of the upper middle of one end of the base, and the connecting bearing is located at the opening of one end of the T-shaped top groove. An insertion sliding groove is provided at the middle of one side of the top surface of the base, a side wall groove is provided on the outer wall of the upper end of the other side of the base, and an installation inner groove is provided in the inner cavity of the upper middle of one side of the base. A pushing inner groove is also provided in the inner cavity of the upper middle of one side of the base, and the pushing inner groove is located outside the installation inner groove. The pushing inner groove and the installation inner groove are connected by a concave vent hole. A first scale is provided at one side of one end of the top surface of the base, and a second scale is provided at the other side of one side of the base.

[0008] Furthermore, the rotating disc includes a disc and a handle that is movably mounted on the outer periphery of one side of the disc, and a threaded post is fixedly mounted on the outer wall of the middle part of the other side of the disc, and the threaded post is mounted through the connecting bearing, and the threaded post is set in the inner cavity of the T-shaped top groove.

[0009] Furthermore, the fixing block includes a lower clamping block and a connecting bracket fixedly installed on one side of the outer wall of the lower clamping block. A snap-fit ​​bracket is fixedly installed on the other side of the outer wall of the lower clamping block. An upper clamping block is slidably arranged between the upper ends of the connecting bracket and the snap-fit ​​bracket. Multiple triangular protrusions are fixedly installed on the inner outer walls of one end of the upper clamping block and the lower clamping block, respectively.

[0010] Furthermore, the snap-fit ​​bracket includes a bracket body and a snap-fit ​​push plate installed in the inner cavity at the middle of one end of the bracket body.

[0011] Furthermore, an inner sliding groove is provided on the outer wall of the inner middle part of the bracket body, and a T-shaped double-pass inner groove is provided on the inner wall of one end of the inner cavity of the inner sliding groove. The inner end of the T-shaped double-pass inner groove is connected to the inner sliding groove, and the outer end of the T-shaped double-pass inner groove is connected to the outer wall of the bracket body. The snap-fit ​​push plate includes a snap-fit ​​plate and a pull block fixedly installed on the outer wall of the middle part of one end of the snap-fit ​​plate. The snap-fit ​​plate is elastically slidably installed in the inner cavity of the T-shaped double-pass inner groove by a reset spring. Several triangular snap-fit ​​blocks are fixedly arranged on the outer wall of the other end of the snap-fit ​​plate.

[0012] Furthermore, the upper clamping block includes an upper clamping block body and a limiting slider fixedly installed on the outer wall of the middle part of one side of the upper clamping block body. The limiting slider is embedded and slidably installed in the connecting bracket. A snap-fit ​​slider is fixedly installed on the outer wall of the middle part of the other side of the upper clamping block body. Several fixed triangular blocks are evenly arranged and fixedly installed on the outer wall of one end of the snap-fit ​​slider. The fixed triangular blocks are movably snapped with the triangular snap-fit ​​blocks respectively. An insertion square groove is provided on the outer wall of the middle part of one end of the upper clamping block body.

[0013] Furthermore, the drive rod includes a protruding rod and an insertion protrusion fixedly installed on the outer wall of the middle part of the other end of the protruding rod.

[0014] Furthermore, the indicator block includes a square frame and semi-circular slots respectively provided on the upper and lower inner walls of the inner cavity of the square frame. A first triangular finger block is fixedly installed on the outer wall of the middle part of one side of the square frame, and the front end of the first triangular finger block is set on the first scale. The driving pressure rod includes a pulling block and a lower protruding locking rod fixedly installed at the middle of the bottom surface of the pulling block. The two outer walls of the upper end of the lower protruding locking rod are respectively provided with receiving circular grooves. The inner cavity opening of the receiving circular groove is elastically slidably installed with a semi-circular locking block through a connecting spring. The semi-circular locking blocks are movably locked in the semi-circular slots.

[0015] Furthermore, the large air storage telescopic rod includes a large air storage cylinder and a first piston rod that is sealed and slidably installed in the inner cavity of the large air storage cylinder at one end. One end of the first piston rod is installed in the inner cavity of the large air storage cylinder by a compression spring. A top insertion groove is provided on the top surface of the front end of the first piston rod. One end of the large air storage cylinder is connected to the concave vent hole. The small air intake telescopic rod includes a small air intake cylinder and a second piston rod that is sealed and slidably installed in the inner cavity of the small air intake cylinder at one end. The other end of the small air intake cylinder is connected to the concave vent hole. An L-shaped indicator block is fixedly installed at the output end of the second piston rod. A second triangular finger block is fixedly installed on one bottom surface of the L-shaped indicator block. The lower end of the second triangular finger block is located on the second scale.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: by changing the setting of the indicator component, the device can not only quickly detect and compare yarns with good elasticity, but also detect and compare yarns with poor elasticity by magnifying the stretching distance. It is convenient and quick to operate, and improves the adaptability of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 This is a three-dimensional structural diagram of the base of the present invention;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the fixing block of the present invention;

[0020] Figure 4 This is a cross-sectional view of the snap-fit ​​bracket of the present invention;

[0021] Figure 5 For the present invention Figure 4 Enlarged view of point A;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the upper clamping block of the present invention;

[0023] Figure 7 For the present invention Figure 6 Enlarged view of point B;

[0024] Figure 8 This is a schematic diagram of the three-dimensional structure of the sliding clamping block of the present invention;

[0025] Figure 9 This is a three-dimensional structural diagram of the indicator sleeve of the present invention;

[0026] Figure 10 This is a schematic diagram of the three-dimensional structure of the driving pressure rod of the present invention;

[0027] Figure 11 This is a top sectional view of the base of the present invention;

[0028] Figure 12 This is a top cross-sectional view of the conversion indicator component of the present invention;

[0029] Figure 13 This is a schematic diagram of the three-dimensional structure of the drive turntable of the present invention.

[0030] In the diagram: 1. Base; 11. T-shaped top groove; 12. Connecting bearing; 13. Insertion sliding groove; 14. Side wall groove; 15. Pushing inner groove; 16. Installing inner groove; 17. Concave vent hole; 18. First scale; 19. Second scale; 2. Drive turntable; 21. Disc; 22. Turn handle; 23. Threaded post; 3. Fixing clamp; 31. Lower clamp; 32. Connecting bracket; 33. Snap-fit ​​bracket; 331. Bracket body; 3311. Inner sliding groove; 3312. T-shaped double-through inner groove; 332. Snap-fit ​​push plate; 3321. Clamping plate; 3322. Pulling block; 3323. Return spring; 3324. Triangular clamp; 34. Upper clamp; 341. Upper clamp body; 342. Restricting slider; 343. Snap-fit ​​slider; 344. Fixing triangle 345. Insertion square groove; 35. Multiple triangular protrusions; 4. Sliding clamp block; 5. T-shaped threaded slider; 6. Driving rod; 61. Protruding rod; 62. Insertion protrusion; 7. Driving finger block; 71. Indicator sleeve block; 711. Square frame; 712. First triangular finger block; 713. Semi-circular slot; 72. Driving pressure rod; 721. Lower protruding clamp rod; 722. Pulling square block; 723. Retracting circular groove; 724. Connecting spring; 725. Semi-circular clamp block; 8. Conversion indicator assembly; 81. Large air storage telescopic rod; 811. Large air storage cylinder; 812. First piston rod; 813. Compression spring; 814. Top insertion groove; 82. Small air intake telescopic rod; 821. Small air intake cylinder; 822. Second piston rod; 83. L-shaped indicator block; 831. Second triangular finger block. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] To address the technical issue that yarn elasticity tension testing frames are typically only suitable for yarns with good elasticity, resulting in low adaptability and difficulty in determining the elasticity of yarns with poor elasticity, such as… Figure 1 , Figure 2 and Figures 9-13 As shown, the following preferred technical solutions are provided:

[0033] A yarn elastic tension testing frame with a positioning clamping assembly includes a base 1. A drive turntable 2 is movably installed at the upper end of one end of the base 1. A fixing clamp 3 is fixedly installed at the middle of the other end of the top surface of the base 1. A sliding clamp 4 is installed at the middle of the top surface of the base 1. A T-shaped threaded slider 5 is fixedly installed at the middle of the bottom surface of the sliding clamp 4, and the T-shaped threaded slider 5 is threadedly connected to the output end of the drive turntable 2. A drive rod 6 is fixedly installed on the outer wall of the middle of the other end of the upper end of the sliding clamp 4. A drive finger block 7 is fixedly installed on the outer wall of the middle of one side of the lower end of the sliding clamp 4. A conversion indicator assembly 8 is installed in the inner cavity of one side of the upper end of the base 1.

[0034] A T-shaped top groove 11 is provided at the middle of one end of the top surface of the base 1. A connecting bearing 12 is embedded in the outer wall of the upper middle of one end of the base 1, and the connecting bearing 12 is located at the opening of one end of the T-shaped top groove 11. An insertion sliding groove 13 is provided at the middle of one side of the top surface of the base 1. A side wall groove 14 is provided on the outer wall of the upper end of the other side of the base 1. An installation inner groove 16 is provided in the inner cavity of the upper middle of one side of the base 1. A pushing inner groove 15 is also provided in the inner cavity of the upper middle of one side of the base 1, and the pushing inner groove 15 is located outside the installation inner groove 16. The pushing inner groove 15 and the installation inner groove 16 are connected by a concave vent hole 17. A first scale 18 is provided on one side of one end of the top surface of the base 1, and a second scale 19 is provided on the other side of one side of the base 1.

[0035] The rotating disk 2 includes a disk 21 and a handle 22 movably mounted on the outer wall of one side of the disk 21. A threaded post 23 is fixedly mounted on the outer wall of the middle part of the other side of the disk 21. The threaded post 23 is installed through the connecting bearing 12 and is located in the inner cavity of the T-shaped top groove 11.

[0036] The driving finger block 7 includes an indicator sleeve block 71 and a driving pressure rod 72 that passes through and is installed in the middle of the indicator sleeve block 71. The indicator sleeve block 71 includes a square frame 711 and semi-circular slots 713 respectively provided on the upper and lower inner walls of the two ends of the inner cavity of the square frame 711. A first triangular finger block 712 is fixedly installed on the outer wall of the middle part of one side of the square frame 711, and the front end of the first triangular finger block 712 is set on the first scale 18. The driving pressure rod 72 includes a pulling block 722 and a... A protruding locking rod 721 is fixedly installed at the center of the bottom surface of the pull block 722. The two outer walls of the upper end of the protruding locking rod 721 are respectively provided with receiving circular grooves 723. A semi-circular locking block 725 is elastically slidably installed at the inner cavity opening of the receiving circular groove 723 through a connecting spring 724. The semi-circular locking blocks 725 are respectively movably locked in the semi-circular locking slots 713. The setting of the semi-circular locking blocks 725 and the semi-circular locking slots 713 can achieve the initial fixation of the position of the protruding locking rod 721.

[0037] The conversion indicator assembly 8 includes a large air storage telescopic rod 81 and a small air intake telescopic rod 82 fixedly installed in the upper inner cavity of one side of the base 1. The large air storage telescopic rod 81 is fixedly installed in the upper inner cavity of the middle part of one side of the base 1, and an L-shaped indicator block 83 is fixedly installed at the output end of the small air intake telescopic rod 82. The lower end of the driving pressure rod 72 is positioned directly above the output end of the large air storage telescopic rod 81. The large air storage telescopic rod 81 includes a large air cylinder 811 and a first piston rod 812 that is sealed and slidably installed in the inner cavity of the large air cylinder 811. One end of the first piston rod 812 is installed in the large air cylinder 811 by a compression spring 813. In the inner cavity of 11, a top insertion groove 814 is provided on the top surface of the front end of the first piston rod 812. The large air storage cylinder 811 is connected to one end of the concave vent hole 17. The small air intake telescopic rod 82 includes a small air intake cylinder 821 and a second piston rod 822 that is sealed and slidably installed in the inner cavity of the small air intake cylinder 821. The small air intake cylinder 821 is connected to the other end of the concave vent hole 17. The L-shaped indicator block 83 is fixedly installed at the output end of the second piston rod 822, and a second triangular finger block 831 is fixedly installed on one side bottom surface of the L-shaped indicator block 83. The lower end of the second triangular finger block 831 is set on the second scale 19.

[0038] Specifically, the yarn is straightened and tightened by the fixed clamp 3 and the sliding clamp 4 respectively. By holding the handle 22 and rotating it with the threaded column 23 as the center, the T-shaped threaded slider 5 can be moved to one end of the base 1 under the drive of the threaded column 23. Thus, the yarn can be tightened and stretched by the fixed clamp 3 and the sliding clamp 4. At this time, by setting the first scale 18, the operator can read the yarn stretching length through the first triangular finger block 712 until the yarn is stretched to the limit, and then read the final value. The operation is convenient and quick, and it is convenient to quickly detect and compare the elastic tension of the yarn.

[0039] Furthermore, when the worker visually assesses that the yarn's elasticity is poor, they can push and pull the block 722 downwards. Pulling the block 722 will cause the lower convex lever 721 to move downwards as well. The lower end of the lower convex lever 721 will then insert into the top insertion slot 814. At this point, the yarn is straightened and tightened by the fixed clamping block 3 and the sliding clamping block 4, respectively. Then, the turntable 2 can be rotated to achieve short-distance stretching of the yarn. During this process, the sliding clamping block 4 will drive the pressure rod 72 forward via the indicator sleeve 71, thereby pressing the first piston rod 812 into place. In the inner cavity of the large air cylinder 811, the gas inside the large air cylinder 811 enters the inner cavity of the small air inlet cylinder 821 through the concave vent hole 17. At this time, due to the volume difference, under the drive of air pressure, the second piston rod 822 can be pushed out of the small air inlet cylinder 821 by a large distance, thereby driving the L-shaped indicator block 83 to move on the second scale 19, and magnifying the detection of the elastic properties of the yarn. This setting not only improves the adaptability of the device, allowing the device to detect and read the yarns with good elasticity and those with poor elasticity, but also makes it quick and convenient to operate and easy to use.

[0040] To solve the technical problem of how to quickly compress and fix the yarn, such as Figures 1-8 As shown, the following preferred technical solutions are provided:

[0041] The fixing clamp 3 includes a lower clamp 31 and a connecting bracket 32 ​​fixedly installed on one side of the outer wall of the lower clamp 31. A snap-fit ​​bracket 33 is fixedly installed on the other side of the outer wall of the lower clamp 31. An upper clamp 34 is slidably arranged between the upper ends of the connecting bracket 32 ​​and the snap-fit ​​bracket 33. Multiple triangular protrusions 35 are fixedly installed on the inner outer walls of one end of the upper clamp 34 and the lower clamp 31, respectively. The multiple triangular protrusions 35 can prevent the yarn end from falling off and sliding after clamping.

[0042] The snap-fit ​​bracket 33 includes a bracket body 331 and a snap-fit ​​push plate 332 installed in the inner cavity of the middle part of one end of the bracket body 331.

[0043] An inner sliding groove 3311 is provided on the outer wall of the middle inner side of the bracket body 331, and a T-shaped double-pass inner groove 3312 is provided on the inner wall of one end of the inner cavity of the inner sliding groove 3311. The inner end of the T-shaped double-pass inner groove 3312 is connected to the inner sliding groove 3311, and the outer end of the T-shaped double-pass inner groove 3312 is connected to the outer wall of the bracket body 331. The snap-fit ​​push plate 332 includes a snap-fit ​​plate 3321 and a pull block 3322 fixedly installed on the outer wall of the middle one end of the snap-fit ​​plate 3321. The snap-fit ​​plate 3321 is elastically slidably installed in the inner cavity of the T-shaped double-pass inner groove 3312 by a return spring 3323. Several triangular snap-fit ​​blocks 3324 are fixedly arranged on the outer wall of the other end of the snap-fit ​​plate 3321.

[0044] The upper clamping block 34 includes an upper clamping block body 341 and a limiting slider 342 fixedly installed on the outer wall of the middle part of one side of the upper clamping block body 341. The limiting slider 342 is embedded and slidably installed in the connecting bracket 32. A snap-fit ​​slider 343 is fixedly installed on the outer wall of the middle part of the other side of the upper clamping block body 341. Several fixed triangular blocks 344 are evenly arranged and fixedly installed on the outer wall of one end of the snap-fit ​​slider 343. The fixed triangular blocks 344 are movably snapped with the triangular snap-fit ​​blocks 3324 respectively. An insertion square groove 345 is provided on the outer wall of the middle part of one end of the upper clamping block body 341.

[0045] The drive rod 6 includes a protruding rod 61 and an insertion protrusion 62 fixedly installed on the outer wall of the middle part of the other end of the protruding rod 61.

[0046] Specifically, when the operator needs to clamp the yarn, the two ends of the straightened yarn can be placed in the fixed clamping block 3 and the sliding clamping block 4 respectively. In the initial state, the insertion protrusion 62 is inserted into the insertion square groove 345. By pressing down the protruding rod 61, the upper clamping block 34 can be moved downward. The movement mode of each structure in the sliding clamping block 4 is the same as that of each structure in the fixed clamping block 3. During the downward movement of the upper clamping block 34, the fixed triangular block 344 and the triangular locking block 3324 will be continuously engaged under the elastic force of the return spring 3323, thereby limiting the downward movement position of the upper clamping block 34 until the lower clamping block 31 and the upper clamping block 34 are pressed and fitted together. Thus, the operator only needs to push down the pressing protruding rod 61 to simultaneously press and fix the clamping end of the yarn, which improves the detection efficiency and facilitates use.

[0047] Furthermore, by pulling the pulling block 3322 outward, the fixed triangular block 344 and the triangular clamping block 3324 can be separated, thereby causing the lower clamping block 31 and the upper clamping block 34 to lose their clamping and fixing of the yarn, which facilitates the cutting of the yarn.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A yarn elastic tension testing frame with a positioning clamp assembly, comprising a base (1), characterized in that: A drive turntable (2) is inserted into the upper end of one end of the base (1). A fixed clamping block (3) is fixedly installed at the middle of the other end of the top surface of the base (1). A sliding clamping block (4) is installed at the middle of the top surface of the base (1). A T-shaped threaded slider (5) is fixedly installed at the middle of the bottom surface of the sliding clamping block (4). The T-shaped threaded slider (5) is installed on the output end of the drive turntable (2) by threaded connection. A drive rod (6) is fixedly installed on the outer wall of the middle of the other end of the upper end of the sliding clamping block (4). A drive finger block (7) is fixedly installed on the outer wall of the middle of one side of the lower end of the sliding clamping block (4). A conversion indicator component (8) is installed in the inner cavity of one side of the upper end of the base (1). The driving finger block (7) includes an indicator sleeve block (71) and a driving pressure rod (72) that is installed through the middle of the indicator sleeve block (71). The conversion indicator assembly (8) includes a large air storage telescopic rod (81) and a small air intake telescopic rod (82) fixedly installed in the inner cavity of the upper side of one end of the base (1). The large air storage telescopic rod (81) is fixedly installed in the inner cavity of the middle upper side of one side of the base (1), and an L-shaped indicator block (83) is fixedly installed at the output end of the small air intake telescopic rod (82), which drives the lower end of the pressure rod (72) to be positioned directly above the output end of the large air storage telescopic rod (81). The large air storage telescopic rod (81) includes a large air storage cylinder (811) and a first piston rod (812) that is sealed and slidably installed in the inner cavity of the large air storage cylinder (811). One end of the first piston rod (812) is installed in the inner cavity of the large air storage cylinder (811) by a compression spring (813). A top insertion groove (814) is provided on the top surface of the front end of the first piston rod (812). The large air storage cylinder (811) is connected to one end of the concave vent hole (17). The small air intake telescopic rod (82) includes a small air intake cylinder (821) and a second piston rod (822) that is sealed and slidably installed in the inner cavity of the small air intake cylinder (821). The base (1) includes a concave vent hole (17), and the other end of the small air intake cylinder (821) is connected to the concave vent hole (17). The L-shaped indicator block (83) is fixedly installed at the output end of the second piston rod (822), and a second triangular finger block (831) is fixedly installed on one side of the bottom surface of the L-shaped indicator block (83), and the lower end of the second triangular finger block (831) is set on the second scale (19).

2. A yarn elastic tension testing frame with a positioning clamp assembly according to claim 1, characterized in that: A T-shaped top groove (11) is provided at the middle of one end of the top surface of the base (1). A connecting bearing (12) is embedded in the outer wall of the middle of the upper end of one end of the base (1). The connecting bearing (12) is located at the opening of one end of the T-shaped top groove (11). An insertion sliding groove (13) is provided at the middle of one side of the top surface of the base (1). A side wall groove (14) is provided on the outer wall of the upper end of the other side of the base (1). An installation inner groove (16) is provided in the inner cavity of the middle of one side of the base (1). A push inner groove (15) is also provided in the inner cavity of the middle of one side of the base (1). The push inner groove (15) is located on the outside of the installation inner groove (16). The push inner groove (15) and the installation inner groove (16) are connected by a concave vent hole (17). A first scale (18) is provided at one side of one end of the top surface of the base (1). A second scale (19) is provided at the other end of one side of the base (1).

3. A yarn elastic tension testing frame with a positioning clamp assembly according to claim 2, characterized in that: The rotating disk (2) includes a disc (21) and a handle (22) movably mounted on the outer wall of one side of the disc (21). A threaded column (23) is fixedly mounted on the outer wall of the middle part of the other side of the disc (21). The threaded column (23) is mounted through the connecting bearing (12) and is located in the inner cavity of the T-shaped top groove (11).

4. A yarn elastic tension testing frame with a positioning clamp assembly according to claim 3, characterized in that: The fixed clamping block (3) includes a lower clamping block (31) and a connecting bracket (32) fixedly installed on one side of the outer wall of the lower clamping block (31). A snap-fit ​​bracket (33) is fixedly installed on the other side of the outer wall of the lower clamping block (31). An upper clamping block (34) is slidably arranged between the upper ends of the connecting bracket (32) and the snap-fit ​​bracket (33). Multiple triangular protrusions (35) are fixedly installed on the inner outer walls of one end of the upper clamping block (34) and the lower clamping block (31).

5. A yarn elastic tension testing frame with a positioning clamp assembly according to claim 4, characterized in that: The snap-fit ​​bracket (33) includes a bracket body (331) and a snap-fit ​​push plate (332) installed in the inner cavity of the middle part of one end of the bracket body (331).

6. A yarn elastic tension testing frame with a positioning clamp assembly according to claim 5, characterized in that: An inner sliding groove (3311) is provided on the outer wall of the inner middle part of the support body (331), and a T-shaped double-pass inner groove (3312) is provided on the inner wall of one end of the inner cavity of the inner sliding groove (3311). The inner end of the T-shaped double-pass inner groove (3312) is connected to the inner sliding groove (3311), and the outer end of the T-shaped double-pass inner groove (3312) is connected to the outer wall of the support body (331). The snap-fit ​​push plate (332) includes a snap-fit ​​plate (3321) and a pull block (3322) fixedly installed on the outer wall of the middle part of one end of the snap-fit ​​plate (3321). The snap-fit ​​plate (3321) is elastically slidably installed in the inner cavity of the T-shaped double-pass inner groove (3312) by a return spring (3323). Several triangular snap-fit ​​blocks (3324) are fixedly arranged on the outer wall of the other end of the snap-fit ​​plate (3321).

7. A yarn elastic tension testing frame with a positioning clamp assembly according to claim 6, characterized in that: The upper clamping block (34) includes an upper clamping block body (341) and a limiting slider (342) fixedly installed on the outer wall of the middle part of one side of the upper clamping block body (341). The limiting slider (342) is embedded and slidably installed in the connecting bracket (32). A snap-fit ​​slider (343) is fixedly installed on the outer wall of the middle part of the other side of the upper clamping block body (341). Several fixed triangular blocks (344) are evenly arranged and fixedly installed on the outer wall of one end of the snap-fit ​​slider (343). The fixed triangular blocks (344) are movably snapped with the triangular snap-fit ​​blocks (3324) respectively. An insertion square groove (345) is provided on the outer wall of the middle part of one end of the upper clamping block body (341).

8. A yarn elastic tension testing frame with a positioning clamp assembly according to claim 7, characterized in that: The drive rod (6) includes a protruding rod (61) and an insertion protrusion (62) fixedly installed on the outer wall of the middle part of the other end of the protruding rod (61).

9. A yarn elastic tension testing frame with a positioning clamp assembly according to claim 8, characterized in that: The indicator block (71) includes a square frame (711) and semi-circular slots (713) respectively provided on the inner walls of the upper and lower sides of the inner cavity of the square frame (711). A first triangular finger block (712) is fixedly installed on the outer wall of the middle part of one side of the square frame (711), and the front end of the first triangular finger block (712) is provided on the first scale (18). The driving lever (72) includes a pulling block (722) and a lower protruding locking rod (721) fixedly installed at the middle of the bottom surface of the pulling block (722). The two outer walls of the upper end of the lower protruding locking rod (721) are respectively provided with receiving circular grooves (723). The inner cavity opening of the receiving circular groove (723) is elastically slidably installed with a semi-circular locking block (725) through a connecting spring (724). The semi-circular locking blocks (725) are respectively movably locked in the semi-circular locking groove (713).

Images