Tensile detection device and method for sewing thread

Abstract

The invention discloses a tensile detection device and method for a sewing thread, and belongs to the technical field of sewing thread detection.The tensile detection device comprises two supporting plates, first rotating shafts are rotationally arranged between the two supporting plates, and a fixing plate is fixedly connected between the two first rotating shafts; wherein one supporting plate is fixedly connected with a driving motor used for driving the first rotating shaft to rotate, the two sides of the fixing plate are fixedly connected with detection plates, the sides, away from each other, of the two supporting plates are provided with thread stroking assemblies, and the thread stroking assemblies are connected with the supporting plates and used for stroking sewing threads. The top of the fixing plate is fixedly connected with a thread end fixing assembly, the thread end fixing assembly is used for pressing and positioning sewing threads, and a gravity thread pulling assembly is arranged below the fixing plate. According to the sewing thread stretching device, a sewing thread can be conveniently and vertically stretched, the sewing thread is straightened and tightened before stretching, the accuracy of follow-up detection is guaranteed, and a sound is made in time to remind workers when the sewing thread is broken.

Description

Technical Field

[0001] The present invention belongs to the technical field of sewing thread detection, and in particular relates to a sewing thread tensile strength detection device and method. Background Art

[0002] Sewing thread is a type of thread used for knitted clothing products. It can be divided into three categories based on the raw materials: natural fiber sewing thread, synthetic fiber sewing thread, and mixed sewing thread. Polyester fiber is a high-quality synthetic fiber. The sewing thread made from it is high-strength and has a very low shrinkage rate. Therefore, the sewn seams can always remain flat and beautiful without wrinkling. It has good resistance to high and low temperatures, light resistance, and water resistance. Therefore, polyester thread is an extremely widely used sewing thread.

[0003] During the production of existing sewing threads, sampling inspection is required to test the tensile strength of the sewing threads. Existing testing equipment usually performs horizontal thread pulling during testing. However, horizontal thread pulling can easily cause the sewing threads to become loose and cannot ensure that the sewing threads remain taut before being stretched, thus affecting the test results. In addition, when the sewing threads break, the staff cannot be reminded in time. For this reason, we propose a tensile strength testing device and method for sewing threads. Summary of the Invention

[0004] In order to solve the above problems, an object of the present invention is to provide a sewing thread tensile strength detection device and method.

[0005] To achieve the above-mentioned objectives, the present invention proposes a sewing thread tensile strength detection device, comprising two support plates, a first rotating shaft is rotatably provided between the two support plates, a fixed plate is fixedly connected between the two first rotating shafts, a driving motor for driving the first rotating shaft to rotate is fixedly connected to one of the support plates, detection plates are fixedly connected to both sides of the fixed plate, a thread straightening assembly is provided on the side of the two support plates away from each other, the thread straightening assembly is connected to the support plate and is used to straighten the sewing thread, a thread end fixing assembly is fixedly connected to the top of the fixed plate, the thread end fixing assembly is used to press and position the sewing thread, a gravity pulling assembly is provided below the fixed plate, the gravity pulling assembly is used to stretch the sewing thread, a thread break reminder assembly is connected to the top of the fixed plate, the thread break reminder assembly is used to knock to remind the sewing thread of thread breakage.

[0006] Preferably, the wire-drawing assembly includes a side plate fixedly connected to one of the support plates, the bottom of the side plate is fixedly connected to a first push rod motor, the output shaft of the first push rod motor is fixedly connected to a double-sided rack, fixed shafts that are movable through the support plate are provided on both sides of the double-sided rack, a U-shaped frame is fixedly connected to the fixed shaft, a rotating rod is fixedly connected to one side of the U-shaped frame, a spring is fixedly connected between the top of the rotating rod and the support plate, the end of the rotating rod away from the U-shaped frame is fixedly connected to a bearing, a second rotating shaft is provided inside the bearing, one end of the second rotating shaft is fixedly connected to a gear, and the double-sided rack is engaged with the gear for transmission, the end of the second rotating shaft away from the gear is fixedly connected to a wire-drawing roller, and a baffle is fixedly connected to the side of the detection plate close to the wire-drawing roller.

[0007] Preferably, the thread end fixing assembly includes a vertical plate fixedly connected to the top of the fixed plate, the top of the vertical plate is fixedly connected to a support plate, the top of the support plate is fixedly connected to two second push rod motors, the output shaft of the second push rod motor is fixedly connected to a movable frame, the bottom end of the movable frame is fixedly connected to a first extrusion plate, and the side of the detection plate close to the first extrusion plate is fixedly connected to a first wire pressing seat.

[0008] Preferably, the gravity wire pulling assembly includes two guide rods that are movable through the fixed plate, the bottom ends of the guide rods are fixedly connected to a movable frame, the top of the movable frame is fixedly connected to a mounting block, the internal fixed sleeve of the mounting block is provided with a cross bar, the two ends of the cross bar are fixedly connected to a second wire pressing seat, the bottom of the mounting block is fixedly connected to a double-headed cylinder, the output shaft of the double-headed cylinder is fixedly connected to the movable plate, the two ends of the movable plate are fixedly connected to connecting rods, the end of the connecting rod away from the movable plate is fixedly connected to the second extrusion plate, and a water tank with a top opening is provided inside the movable frame.

[0009] Preferably, the wire break reminder assembly includes a lifting sleeve movably mounted on the outside of the vertical plate, a threaded sleeve on the lifting sleeve is provided with a positioning bolt, both sides of the lifting sleeve are fixedly connected to an inclined rod, the bottom end of the inclined rod is fixedly connected to a limiting rod, the fixed sleeve on the inclined rod is provided with a knocking plate, and a fixed frame fixedly connected to the fixed plate is provided below the knocking plate, the fixed frame is fixedly connected to a positioning shaft, and the external movable sleeve of the positioning shaft is provided with multiple wire pressing assemblies, and the wire pressing assembly includes two clamping plates movably mounted on the outside of the positioning shaft, a wire guide wheel is rotatably provided between the two clamping plates, a connecting rod is fixedly connected between the two clamping plates, a connecting rope is fixedly connected to the connecting rod, and an end of the connecting rope away from the connecting rod is fixedly connected to a knocking ball.

[0010] Preferably, a plurality of threading holes are arranged in an array on the knocking plate, and the connecting rope is movably passed through the threading holes, and a limiting sleeve fixedly sleeved on the outside of the positioning shaft is provided between the two clamping plates.

[0011] Preferably, a plurality of first wire pressing grooves are arranged in an array on the first wire pressing seat, and the first extrusion plate is movably sleeved in the first wire pressing grooves.

[0012] Preferably, a plurality of second wire pressing grooves are arranged in an array on the second wire pressing seat, and the second extrusion plate is movably sleeved in the second wire pressing grooves.

[0013] A method for detecting a tensile strength test device for a sewing thread, comprising the following steps:

[0014] Step 1: First, manually pull the rotating rod on the thread-winding assembly downward to release the limit of the thread-winding roller on the detection plate. At this time, the first driving motor drives the first rotating shaft to rotate, and the first rotating shaft drives the detection plate to rotate horizontally through the fixed plate. At this time, the sewing thread to be tested is placed on the detection plate, and one end of the sewing thread to be tested is fixed with the thread end fixing assembly. The reciprocating rotation makes multiple sewing threads pressed on both sides of the detection plate;

[0015] Step 2: Rotate and reset the detection plate to make it vertical, and then use the thread-winding assembly to rotate and drive the sewing thread, so that the thread-winding roller on the thread-winding assembly presses and drives the sewing thread, which will straighten the sewing thread;

[0016] Step 3: After the sewing thread is straightened, use the gravity pull assembly to clamp the sewing thread, and then continue to add water to the water tank. The gravity of the gravity pull assembly and the water will pull the sewing thread downward;

[0017] Step 4: While the sewing thread is being tightened, the wire pulley on the thread-break reminder component is attached to the taut sewing thread. When the sewing thread breaks, the wire pulley lacks support, so the wire pulley drives the splint to rotate, and then pulls the connecting rope. The connecting rope pulls the knocking ball to hit the knocking plate, making a sound to remind the staff that the thread is broken.

[0018] The tensile strength detection device and method of sewing thread proposed by the present invention can bring the following beneficial effects:

[0019] 1. Fix one end of the sewing thread with the thread fixing component, and then straighten the sewing thread with the thread straightening component to ensure that the sewing thread is in a taut and straightened state before stretching, so as to avoid the loose sewing thread affecting subsequent inspections.

[0020] 2. The sewing thread is stretched vertically by the gravity pulling component, and the broken thread reminder component promptly reminds the staff of the broken sewing thread, so as to remind the staff of the sewing thread breakage in time;

[0021] To sum up, this solution has a simple structure and novel design, which makes it convenient to stretch the sewing thread vertically. The sewing thread is straightened and tightened before stretching to ensure the accuracy of subsequent testing, and a sound is emitted in time to remind the staff when the sewing thread breaks. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0023] In the attached figure:

[0024] Figure 1 It is a front view structural schematic diagram of the present invention.

[0025] Figure 2 It is a side structural schematic diagram of the present invention.

[0026] Figure 3 It is a schematic diagram of the three-dimensional structure from the first viewing angle of the present invention.

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure from a second viewing angle of the present invention.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the support plate, first rotating shaft, fixing plate, detection plate and driving motor of the present invention.

[0029] Figure 6 It is a schematic diagram of the three-dimensional structure of the wire drawing assembly of the present invention.

[0030] Figure 7 It is a schematic diagram of the three-dimensional structure of the thread end fixing assembly of the present invention.

[0031] Figure 8 It is a schematic diagram of the three-dimensional structure of the gravity wire assembly of the present invention.

[0032] Figure 9 It is a schematic diagram of the three-dimensional structure of the disconnection reminder component of the present invention.

[0033] In the figure: 1 support plate, 2 first rotating shaft, 3 fixed plate, 4 detection plate, 5 drive motor, 6 straightening assembly, 601 side plate, 602 first push rod motor, 603 double-sided rack, 604 fixed shaft, 605 U-shaped frame, 606 rotating rod, 607 spring, 608 bearing, 609 second rotating shaft, 610 gear, 611 straightening roller, 612 baffle, 7 thread head fixing assembly, 701 vertical plate, 702 support plate, 703 second push rod motor, 704 moving frame, 705 first extrusion plate, 706 first pressing wire Seat, 8 gravity wire pulling assembly, 801 guide rod, 802 movable frame, 803 mounting block, 804 cross bar, 805 second wire pressing seat, 806 double-head cylinder, 807 movable plate, 808 connecting rod, 809 second extrusion plate, 810 water tank, 9 wire break reminder assembly, 901 lifting sleeve, 902 positioning bolt, 903 oblique rod, 904 limit rod, 905 knocking plate, 906 fixed frame, 907 positioning shaft, 908 splint, 909 wire pulley, 910 wiring rod, 911 connecting rope, 912 knocking ball. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in an exemplary manner in conjunction with the accompanying drawings.

[0035] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are 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 operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0037] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood broadly. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0038] In the present invention, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the descriptions with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more schemes or examples.

[0039] like Figures 1 to 9 As shown, an embodiment of the present invention proposes a tensile strength detection device for sewing thread, comprising two support plates 1, a first rotating shaft 2 being rotatably provided between the two support plates 1, a fixed plate 3 being fixedly connected between the two first rotating shafts 2, a driving motor 5 being fixedly connected to one of the support plates 1 for driving the first rotating shaft 2 to rotate, detection plates 4 being fixedly connected to both sides of the fixed plate 3, a thread-straightening assembly 6 being provided on the side of the two support plates 1 away from each other, the thread-straightening assembly 6 being connected to the support plates 1 for straightening the sewing thread, a thread end fixing assembly 7 being fixedly connected to the top of the fixed plate 3, the thread end fixing assembly 7 being used for pressing and positioning the sewing thread, a gravity pulling assembly 8 being provided below the fixed plate 3, the gravity pulling assembly 8 being used for stretching the sewing thread, a thread-break reminder assembly 9 being connected to the top of the fixed plate 3, the thread-break reminder assembly 9 being used for knocking to remind the sewing thread of thread breakage.

[0040] like Figure 5 and Figure 6As shown, the wire drawing assembly 6 includes a side plate 601 fixedly connected to one of the support plates 1, the bottom of the side plate 601 is fixedly connected to a first push rod motor 602, the output shaft of the first push rod motor 602 is fixedly connected to a double-sided rack 603, and both sides of the double-sided rack 603 are provided with a fixed shaft 604 that movably passes through the support plate 1, a U-shaped frame 605 is fixedly connected to the fixed shaft 604, one side of the U-shaped frame 605 is fixedly connected to a rotating rod 606, a spring 607 is fixedly connected between the top of the rotating rod 606 and the support plate 1, and the end of the rotating rod 606 away from the U-shaped frame 605 is fixedly connected to a bearing 608, and a second rotating shaft 609 is sleeved inside the bearing 608, and one end of the second rotating shaft 609 is fixed It is connected to a gear 610, and the double-sided rack 603 is meshed with the gear 610 for transmission. The end of the second rotating shaft 609 away from the gear 610 is fixedly connected to a thread-removing roller 611, and the side of the detection plate 4 close to the thread-removing roller 611 is fixedly connected to a baffle 612. The first push rod motor 602 drives the double-sided rack 603 to move downward, and the downward movement of the double-sided rack 603 will drive the gear 610 meshing with it to rotate, and the gear 610 drives the second rotating shaft 609 to rotate, and the second rotating shaft 609 will drive the thread-removing roller 611 to rotate, and the thread-removing roller 611 will rotate the sewing thread downward and straighten it, and the spring 607 can tighten the rotating rod 606 to keep it horizontal, so that the rotating rod 606 can drive the thread-removing roller 611 to press against the surface of the baffle 612.

[0041] like Figure 5 and Figure 7 As shown, the thread end fixing assembly 7 includes a vertical plate 701 fixedly connected to the top of the fixed plate 3, the top of the vertical plate 701 is fixedly connected to a support plate 702, the top of the support plate 702 is fixedly connected to two second push rod motors 703, the output shaft of the second push rod motor 703 is fixedly connected to a movable frame 704, the bottom end of the movable frame 704 is fixedly connected to a first extrusion plate 705, and the side of the detection plate 4 close to the first extrusion plate 705 is fixedly connected to a first wire pressing seat 706. The second push rod motor 703 drives the movable frame 704 to move, and the movable frame 704 will drive the first extrusion plate 705 close to the first wire pressing seat 706, so that one end of the sewing thread can be pressed and fixed.

[0042] like Figure 4 and Figure 8As shown, the gravity wire pulling assembly 8 includes two guide rods 801 that are movable through the fixed plate 3, the bottom end of the guide rod 801 is fixedly connected to a movable frame 802, the top of the movable frame 802 is fixedly connected to a mounting block 803, the internal fixed sleeve of the mounting block 803 is provided with a cross bar 804, the two ends of the cross bar 804 are fixedly connected to a second wire pressing seat 805, the bottom of the mounting block 803 is fixedly connected to a double-headed cylinder 806, the output shaft of the double-headed cylinder 806 is fixedly connected to a movable plate 807, and the two ends of the movable plate 807 are fixedly connected to connecting rods. The connecting rod 808 and the end of the connecting rod 808 away from the movable plate 807 are fixedly connected to the second extrusion plate 809. The interior of the movable frame 802 is provided with a water tank 810 with a top opening. The double-headed cylinder 806 drives the two movable plates 807 to close, so that the movable plate 807 drives the connecting rod 808 and the second extrusion plate 809 to move. The second extrusion plate 809 will cooperate with the second wire pressing seat 805 to press the sewing thread, and then by continuously adding water into the water tank 810, the sewing thread will be driven to move down and tightened under the gravity of the gravity wire pulling assembly 8 and the water.

[0043] like Figure 9 As shown, the broken wire reminder component 9 includes a lifting sleeve 901 that is movably sleeved on the outside of the vertical plate 701, and a threaded sleeve on the lifting sleeve 901 is provided with a positioning bolt 902. The two sides of the lifting sleeve 901 are fixedly connected with an inclined rod 903, and the bottom end of the inclined rod 903 is fixedly connected to a limiting rod 904. A fixed sleeve on the inclined rod 903 is provided with a knocking plate 905, and a fixed frame 906 fixedly connected to the fixed plate 3 is provided below the knocking plate 905. A positioning shaft 907 is fixedly connected to the fixed frame 906. The outer movable sleeve of the positioning shaft 907 is provided with multiple wire pressing components, and the wire pressing components include two clamping components movably sleeved on the outside of the positioning shaft 907. Plate 908, a wire pulley 909 is rotated between the two splints 908, a connecting rod 910 is fixedly connected between the two splints 908, a connecting rope 911 is fixedly connected to the connecting rod 910, and a knocking ball 912 is fixedly connected to the end of the connecting rope 911 away from the connecting rod 910. The wire pulley 909 is placed on the taut sewing thread. When the sewing thread breaks, the wire pulley 909 lacks support, which will drive the splint 908 to rotate, and the splint 908 will pull the connecting rope 911 through the connecting rod 910, and the connecting rope 911 will pull the knocking ball 912 to hit the knocking plate 905, thereby making a sound to remind the staff.

[0044] like Figure 9 As shown, a plurality of threading holes are arranged in an array on the knocking plate 905, and the connecting rope 911 is movably passed through the threading holes. A limit sleeve fixedly sleeved on the outside of the positioning shaft 907 is provided between the two splints 908 to prevent the splints 908 from deviating.

[0045] like Figure 7As shown, a plurality of first pressing grooves are arranged in an array on the first pressing seat 706, and the first squeezing plate 705 is movably sleeved in the first pressing groove, and the first squeezing plate 705 presses the sewing thread tightly in the first pressing groove.

[0046] like Figure 8 As shown, a plurality of second pressing grooves are arranged in an array on the second pressing seat 805, and the second squeezing plate 809 is movably sleeved in the second pressing groove, and the second squeezing plate 809 presses the sewing thread tightly in the second pressing groove.

[0047] A method for detecting a tensile strength test device for a sewing thread, comprising the following steps:

[0048] Step 1: First, manually pull the rotating rod 606 on the thread-winding assembly 6 downward to release the limit of the thread-winding roller 611 on the detection plate 4. At this time, the first driving motor 5 drives the first rotating shaft 2 to rotate, and the first rotating shaft 2 drives the detection plate 4 to rotate horizontally through the fixed plate 3. At this time, the sewing thread to be tested is placed on the detection plate 4, and one end of the sewing thread to be tested is fixed by the thread end fixing assembly 7. The reciprocating rotation makes multiple sewing threads pressed on both sides of the detection plate 4;

[0049] Step 2: Rotate and reset the detection plate 4 to make it vertical, and then use the thread-straightening assembly 6 to rotate and drive the sewing thread, so that the thread-straightening roller 611 on the thread-straightening assembly 6 presses and drives the sewing thread, thereby straightening the sewing thread;

[0050] Step 3: After the sewing thread is straightened, use the gravity pull assembly 8 to clamp the sewing thread, and then continuously add water to the water tank 810. The gravity of the gravity pull assembly 8 and the water will pull the sewing thread downward;

[0051] Step 4: During the process of tightening the sewing thread, the wire pulley 909 on the thread-break reminder component 9 is attached to the tightened sewing thread. When the sewing thread breaks, the wire pulley 909 lacks support. In this way, the wire pulley 909 drives the splint 908 to rotate, and then pulls the connecting rope 911. The connecting rope 911 pulls the knocking ball 911 to hit the knocking plate 905, making a sound to remind the staff that the thread is broken.

[0052] Working principle: first manually pull the rotating rod 606 to make it rotate downward, let the thread roller 611 disengage from the baffle 612, and release the limit of the thread roller 611 on the detection plate 4. At this time, the first drive motor 5 drives the first rotating shaft 2 to rotate, and the first rotating shaft 2 drives the detection plate 4 to rotate horizontally through the fixed plate 3. At this time, the sewing thread to be detected is placed on the detection plate 4, and then, the second push rod motor 703 drives the movable frame 704 to move, and the movable frame 704 will drive the first squeezing plate 705 close to the first wire pressing seat 706. The first squeezing plate 705 presses the sewing thread in the first wire pressing groove, so that one end of the sewing thread can be pressed and fixed, and the thread end fixing component 7 is used to fix one end of the sewing thread to be detected. Such reciprocating rotation makes multiple sewing threads pressed on both sides of the detection plate 4.

[0053] Then, the detection plate 4 is rotated and reset to make it vertical, and the rotating rod 606 and the thread-straightening roller 611 are reset under the tension of the spring 607, and the spring 607 can tighten the rotating rod 606 to keep it horizontal, so that the rotating rod 606 can drive the thread-straightening roller 611 to press against the surface of the baffle 612. Subsequently, the first push rod motor 602 drives the double-sided rack 603 to move downward, and the downward movement of the double-sided rack 603 will drive the gear 610 engaged with it to rotate, and the gear 610 will drive the second rotating shaft 609 to rotate, and the second rotating shaft 609 will drive the thread-straightening roller 611 to rotate, and the thread-straightening roller 611 will rotate the sewing thread downward and straighten it, and the double-headed cylinder 806 drives the two movable plates 807 to close. The movable plate 807 drives the connecting rod 808 and the second squeezing plate 809 to move. The second squeezing plate 809 will cooperate with the second wire pressing seat 805 to press the sewing thread, and then by continuously adding water into the water tank 810, the gravity wire pulling assembly 8 and the gravity of the water will drive the sewing thread to move down and tighten. The wire pulley 909 is placed on the taut sewing thread. When the sewing thread breaks, the wire pulley 909 lacks support, which will drive the splint 908 to rotate. The splint 908 then pulls the connecting rope 911 through the connecting rod 910. The connecting rope 911 will pull the knocking ball 912 to hit the knocking plate 905, thereby making a sound to remind the staff to avoid the broken sewing thread affecting the detection of other sewing threads.

[0054] The various embodiments in this specification are described in a progressive manner. Similar parts between the various embodiments can be referred to in conjunction with each other. Each embodiment focuses on the differences between the other embodiments. In particular, the system embodiments are generally similar to the method embodiments, so the description is relatively simple. For relevant parts, refer to the description of the method embodiments.

[0055] The foregoing is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A sewing thread tensile strength detection device, comprising two support plates (1), a first rotating shaft (2) being rotatably arranged between the two support plates (1), a fixing plate (3) being fixedly connected between the two first rotating shafts (2), a driving motor (5) for driving the first rotating shaft (2) to rotate being fixedly connected to one of the support plates (1), characterized in that: Detection plates (4) are fixedly connected to both sides of the fixing plate (3); a thread straightening assembly (6) is provided on the side of the two supporting plates (1) that is away from each other; the thread straightening assembly (6) is connected to the supporting plate (1) and is used to straighten the sewing thread; a thread end fixing assembly (7) is fixedly connected to the top of the fixing plate (3); the thread end fixing assembly (7) is used to press and position the sewing thread; a gravity pulling assembly (8) is provided below the fixing plate (3); the gravity pulling assembly (8) is used to stretch the sewing thread; and a thread break reminder assembly (9) is connected to the top of the fixing plate (3); the thread break reminder assembly (9) is used to knock and remind the sewing thread when it is broken.

2. A sewing thread tensile testing device according to claim 1, characterized in that: The wire drawing assembly (6) comprises a side plate (601) fixedly connected to one of the support plates (1); a first push rod motor (602) is fixedly connected to the bottom of the side plate (601); an output shaft of the first push rod motor (602) is fixedly connected to a double-sided rack (603); fixed shafts (604) movably passing through the support plate (1) are provided on both sides of the double-sided rack (603); a U-shaped frame (605) is fixedly connected to the fixed shaft (604); a rotating rod (606) is fixedly connected to one side of the U-shaped frame (605); a top of the rotating rod (606) and a support A spring (607) is fixedly connected between the support plates (1); one end of the rotating rod (606) away from the U-shaped frame (605) is fixedly connected to a bearing (608); a second rotating shaft (609) is sleeved inside the bearing (608); one end of the second rotating shaft (609) is fixedly connected to a gear (610), and the double-sided rack (603) is meshed with the gear (610) for transmission; one end of the second rotating shaft (609) away from the gear (610) is fixedly connected to a wire drawing roller (611); and a baffle (612) is fixedly connected to a side of the detection plate (4) close to the wire drawing roller (611).

3. A sewing thread tensile testing device according to claim 2, characterized in that: The thread end fixing assembly (7) comprises a vertical plate (701) fixedly connected to the top of the fixing plate (3); the top of the vertical plate (701) is fixedly connected to a supporting plate (702); the top of the supporting plate (702) is fixedly connected to two second push rod motors (703); the output shaft of the second push rod motor (703) is fixedly connected to a moving frame (704); the bottom end of the moving frame (704) is fixedly connected to a first squeezing plate (705); and a first wire pressing seat (706) is fixedly connected to a side of the detection plate (4) close to the first squeezing plate (705).

4. A sewing thread tensile testing device according to claim 3, characterized in that: The gravity wire pulling assembly (8) comprises two guide rods (801) that movably penetrate the fixed plate (3); the bottom ends of the guide rods (801) are fixedly connected to a movable frame (802); the top of the movable frame (802) is fixedly connected to a mounting block (803); a cross bar (804) is fixedly sleeved inside the mounting block (803); the two ends of the cross bar (804) are fixedly connected to a second wire pressing seat (805); the bottom of the mounting block (803) is fixedly connected to a double-headed cylinder (806); the output shaft of the double-headed cylinder (806) is fixedly connected to a movable plate (807); the two ends of the movable plate (807) are fixedly connected to connecting rods (808); one end of the connecting rod (808) away from the movable plate (807) is fixedly connected to a second extrusion plate (809); and a water tank (810) with a top opening is provided inside the movable frame (802).

5. A sewing thread tensile testing device according to claim 4, characterized in that: The disconnection reminder assembly (9) comprises a lifting sleeve (901) movably sleeved on the outside of the vertical plate (701), a positioning bolt (902) being sleeved on the lifting sleeve (901), inclined rods (903) being fixedly connected on both sides of the lifting sleeve (901), a limit rod (904) being fixedly connected to the bottom end of the inclined rod (903), a knocking plate (905) being fixedly sleeved on the inclined rod (903), a fixing frame (906) being fixedly connected to the fixing plate (3) being provided below the knocking plate (905), and a fixing frame (906) being fixedly connected to the fixing plate (3) on the fixing frame (906). A positioning shaft (907) is fixedly connected, and a plurality of wire pressing assemblies are movably sleeved outside the positioning shaft (907). The wire pressing assemblies include two clamping plates (908) movably sleeved outside the positioning shaft (907), a wire guide wheel (909) is rotatably arranged between the two clamping plates (908), a connecting rod (910) is fixedly connected between the two clamping plates (908), a connecting rope (911) is fixedly connected to the connecting rod (910), and a knocking ball (912) is fixedly connected to one end of the connecting rope (911) away from the connecting rod (910).

6. A sewing thread tensile testing device according to claim 5, characterized in that: The knocking plate (905) is provided with a plurality of threading holes in an array, and the connecting rope (911) is movably passed through the threading holes. A limiting sleeve fixedly sleeved on the outside of the positioning shaft (907) is provided between the two clamping plates (908).

7. A sewing thread tensile testing device according to claim 6, characterized in that: The first wire crimping seat (706) is provided with a plurality of first wire crimping grooves in an array, and the first extrusion plate (705) is movably sleeved in the first wire crimping grooves.

8. A sewing thread tensile testing device according to claim 7, characterized in that: The second wire crimping seat (805) is provided with a plurality of second wire crimping grooves in an array, and the second extrusion plate (809) is movably sleeved in the second wire crimping grooves.

9. A detection method of the tensile testing device for sewing thread according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: First, manually pull the rotating rod (606) on the thread-winding assembly (6) downward to release the limit of the thread-winding roller (611) on the detection plate (4). At this time, the first driving motor (5) drives the first rotating shaft (2) to rotate, and the first rotating shaft (2) drives the detection plate (4) to rotate horizontally through the fixing plate (3). At this time, the sewing thread to be detected is placed on the detection plate (4), and one end of the sewing thread to be detected is fixed by using the thread end fixing assembly (7). The reciprocating rotation makes both sides of the detection plate (4) press multiple sewing threads tightly; Step 2: Rotate and reset the detection plate (4) to make it vertical, and then use the thread-straightening assembly (6) to drive the sewing thread to rotate, so that the thread-straightening roller (611) on the thread-straightening assembly (6) compresses and drives the sewing thread, thereby straightening the sewing thread; Step 3: After the sewing thread is straightened, the sewing thread is clamped by the gravity wire pulling assembly (8), and water is continuously added to the water tank (810). The gravity of the gravity wire pulling assembly (8) and the water will pull the sewing thread downwards and tighten it; Step 4: During the process of tightening the sewing thread, the wire wheel (909) on the wire breakage reminder component (9) is attached to the tightened sewing thread. When the sewing thread breaks, the wire wheel (909) lacks support, so that the wire wheel (909) drives the clamping plate (908) to rotate, which in turn pulls the connecting rope (911), and the connecting rope (911) pulls the knocking ball (911) to hit the knocking plate (905) to make a sound to remind the staff that the thread is broken.

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