Sewing thread performance testing device and method thereof

Abstract

The invention belongs to the technical field of sewing thread performance testing, particularly relates to a sewing thread performance testing device and a sewing thread performance testing method, and aims to solve the problem that the actual use state of a plurality of threads twisted into one strand cannot be simulated in the background technology, the following scheme is provided: the sewing thread performance testing device comprises a base, a first support frame is welded on one side of the outer wall of the top of the base, and a second support frame is welded on the other side of the outer wall of the top of the base; an electric push rod is fixedly connected to the outer wall of the top of the first supporting frame through screws, a connecting frame is arranged on the outer wall of one end of the electric push rod, a wire twisting mechanism is arranged between the electric push rod and the connecting frame, and a servo motor is fixedly connected to the outer wall of one side of the connecting frame through screws. Through linkage control of the electric push rod, the thread twisting mechanism and the servo motor, accurate grabbing and rotation of the hook can be achieved, a plurality of sewing threads are automatically twisted into one strand, and therefore data closer to actual use conditions are provided for testing, and the problem that in the prior art, the comprehensive performance of one strand of threads cannot be reflected through single-thread testing is effectively solved.

Description

Technical Field

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

[0002] Sewing thread is an indispensable basic material in the textile industry and is widely used in the sewing processes of clothing, home textiles, industrial fabrics, and special equipment. Its performance is directly related to the strength, durability, and appearance quality of the stitched parts. The main performance indicators of sewing thread include tensile strength, abrasion resistance, corrosion resistance, elastic recovery rate, and comprehensive performance after twisting. Among them, tensile strength is the core parameter for measuring sewing thread quality, which directly determines the ability of the stitched part to resist fracture when subjected to stress. In actual applications, sewing thread is usually used in the form of multiple strands twisted together. Therefore, testing the performance of only a single sewing thread cannot fully reflect its comprehensive performance in actual use.

[0003] However, existing sewing thread performance testing technology has obvious shortcomings. First, traditional testing devices can usually only test a single sewing thread and cannot simulate the actual use state of multiple threads twisted together. Although this testing method can provide basic performance data for a single thread, it cannot reflect the comprehensive performance of multiple twisted threads, especially tensile strength and durability. Second, the existing technology lacks a flexible test mode switching function, and it is impossible to freely switch between single-thread testing and strand testing on the same device, resulting in low testing efficiency and complex operation. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the present invention provides a sewing thread performance testing device and method thereof, which overcome the deficiencies of the prior art and effectively solve the problem of being unable to simulate the actual use state after multiple threads are twisted into one thread.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A sewing thread performance testing device comprises a base, a first support frame is welded on one side of the top outer wall of the base, and the top outer wall of the first support frame is fixedly connected to an electric push rod by screws, a connecting frame is provided on the outer wall of one end of the electric push rod, and a thread twisting mechanism is provided between the electric push rod and the connecting frame, the outer wall of one side of the connecting frame is fixedly connected to a servo motor by screws, the output shaft of the servo motor is fixedly connected to a screw rod by a coupling, and a rectangular plate is screwed on the outer wall of the screw rod, adjacently distributed wedge blocks are welded on the bottom outer wall of the rectangular plate, and the wedge blocks include three, and the three obliquely distributed wedge blocks are on the same horizontal plane, the bottom outer wall of the connecting frame is welded with a support plate, and the top outer wall of the support plate is fixedly connected to springs distributed at equal distances, the top outer wall of the support plate is rotatably connected to hooks distributed at equal distances, and the springs are fixedly connected between the hooks and the support plate.

[0006] Preferably, a first fixing plate is welded to one side of the outer wall of the top of the rectangular plate, and the screw rod is screwed to the inner wall of the first fixing plate, a second fixing plate is welded to the other side of the outer wall of the top of the rectangular plate, and a first linear bearing is installed on the inner wall of the second fixing plate, a first guide rod is slidably connected to the inner wall of the first linear bearing, and the outer wall of one end of the first guide rod is fixedly connected to the outer wall of the connecting frame.

[0007] The top outer wall of the first supporting frame is provided with a vertical plate, and the electric push rod and the traction sleeve are respectively fixedly connected to the outer wall of the two supporting frames by screws. The horizontal groove is opened on one side outer wall of the traction sleeve, the spiral groove is opened on the outer wall of the traction sleeve, and the spiral groove is connected to the outer wall of one end of the horizontal groove. The connecting seat is fixedly connected to the piston rod of the electric push rod, the rotating head is fixedly connected to one side outer wall of the connecting seat, the docking post is fixedly connected to one side outer wall of the connecting frame, and the rotating head is rotatably connected to the inner wall of one end of the docking post, the connecting seat and the docking post are both slidably connected to the inner wall of the traction sleeve, the guide block is fixedly connected to one side outer wall of the docking post, and the guide block is slidably connected to the inner wall of the horizontal groove, the top outer wall of the first supporting frame is provided with a vertical plate, and the electric push rod and the traction sleeve are respectively fixedly connected to the outer walls of both sides of the vertical plate by screws, and the piston rod of the electric push rod is located inside the traction sleeve.

[0008] Preferably, a second support frame is welded to the other side of the top outer wall of the base, and a sewing thread pulling mechanism is provided on the top outer wall of the second support frame, wherein the sewing thread pulling mechanism includes a yarn drum and a yarn winder, wherein the yarn drum is rotatably connected to one end of the top outer wall of the second support frame, and the yarn winder is fixedly connected to the other end of the top outer wall of the second support frame by screws, and sewing thread is wound between the yarn drum and the yarn winder; The yarn winder includes a mounting frame fixedly connected to the top outer wall of the second support frame by screws, a winding roller rotatably connected to the inner wall of the mounting frame, a driving motor fixedly connected to the outer wall of one end of the winding roller by a coupling, and the driving motor is fixedly connected to the outer wall of one side of the mounting frame by bolts.

[0009] Preferably, the sewing thread traction mechanism also includes a sewing thread guide bucket, wherein there are two sewing thread guide buckets, and the two sewing thread guide buckets are adjacently distributed at both ends of the top outer wall of the second support frame, and the sewing thread is passed through the inner wall of the sewing thread guide bucket.

[0010] Preferably, the sewing thread traction mechanism also includes a wheel frame, wherein the wheel frames include four, and the four wheel frames are welded to the top outer wall of the second support frame, the inner walls of the four wheel frames are rotatably connected to guide wheels, and the sewing thread is slidably connected to the outer wall of the guide wheel, the guide wheel is located at one end of the hook, and each hook is distributed between every two guide wheels.

[0011] Preferably, a pad is welded to one side of the top outer wall of the base, and a sewing thread tensile mechanism is provided on the top outer wall of the pad, and the sewing thread tensile mechanism includes a first electric guide rail, a pressure testing bench, a second electric guide rail, a pressure sensor, a movable clamp and a fixed clamp, wherein the first electric guide rail is fixedly connected to the top outer wall of the pad by screws, the pressure testing bench is fixedly connected to the slider of the first electric guide rail, the second electric guide rail is fixedly connected to the inside of the pressure testing bench by screws, the pressure sensor is installed on the slider of the second electric guide rail, the movable clamp is fixedly connected to one side outer wall of the pressure sensor, the fixed clamp is installed on one side outer wall of the pressure testing bench, and the fixed clamp and the movable clamp are respectively located at both ends of the outer wall of one side of the pressure testing bench.

[0012] Preferably, a vertical rod is welded to the outer wall of the bottom of the pressure testing bench, and a second linear bearing is installed on the inner wall of the vertical rod. A second guide rod is slidably connected to the inner wall of the second linear bearing, and the second guide rod is fixedly connected to the top outer wall of the pad.

[0013] Preferably, the top outer wall of the pressure test bench is fixedly connected to a PLC controller by screws, and the PLC controller is connected to the electric push rod, servo motor, yarn winder, first electric guide rail, second electric guide rail and pressure sensor through signal lines.

[0014] A method for testing the performance of a sewing thread comprises the following steps: S1: The sewing thread is drawn out from the yarn drum, passes through the sewing thread guide bucket and guide wheel in sequence, and is wound onto the yarn winder to form a straightened state; S2: The electric push rod pushes the connecting frame to drive the hook close to the guide wheel. The servo motor drives the screw to rotate, so that the wedge-shaped block at the bottom of the rectangular plate squeezes the hook. The spring is compressed, and the hook is adjusted from an inclined state to a parallel state to hook the sewing thread. S3: Select test mode: S3-1: Single thread test mode: The electric push rod pulls back the docking column to half its length, the guide block slides along the horizontal groove, the thread twisting mechanism does not rotate, and the thread twisting mechanism only moves linearly to ensure that the single sewing thread remains independent. Subsequently, the single sewing thread is clamped by the movable clamp and the fixed clamp; S3-2: One strand test mode: The electric push rod continues to pull back the docking post, and the guide block slides along the spiral groove, driving the docking post to rotate. The connecting frame will rotate along with the docking post to twist multiple sewing threads into one strand; S4: The first electric guide rail drives the pressure test bench close to the sewing line, and the fixed clamp and the movable clamp synchronously clamp the two ends of the sewing line; S5: The second electric guide rail drives the movable clamp away from the fixed clamp, stretching the sewing thread until it breaks. The pressure sensor monitors the tensile strength data in real time and transmits the data to the PLC controller for analysis and storage.

[0015] The beneficial effects of the present invention are: The sewing thread performance testing device and method of the present invention achieve linear or rotational motion of the docking post through horizontal grooves and spiral grooves in the traction sleeve. When the docking post is further pulled back, the guide block enters the spiral groove, driving the docking post to rotate, thereby twisting multiple sewing threads into one strand, which can truly simulate the state of sewing threads in actual use. The sewing thread performance testing device and method of the present invention adopt a thread twisting mechanism and an adjustable hook design, which can flexibly switch between single-thread testing and strand testing modes, and truly simulate the state of sewing thread in actual use; The sewing thread performance testing device and method of the present invention can achieve precise grabbing and rotation of the hook through the linkage control of the electric push rod, the thread twisting mechanism and the servo motor, and automatically twist multiple sewing threads into one strand, thereby providing data for testing that is closer to actual usage conditions, effectively solving the problem in the prior art that a single-strand test cannot reflect the comprehensive performance of a strand of wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a sewing thread performance testing device and method proposed by the present invention; Figure 2 A top view of the overall structure of a sewing thread performance testing device and method proposed by the present invention; Figure 3 A schematic diagram of a thread twisting mechanism of a sewing thread performance testing device and method proposed in the present invention; Figure 4 A schematic diagram of the structure of a sewing thread performance testing device and method proposed by the present invention when the wedge block squeezes the hook Figure 1 ; Figure 5 A schematic diagram of the structure of a sewing thread performance testing device and method proposed by the present invention when the wedge block squeezes the hook Figure 2 ; Figure 6 A schematic diagram of the connection structure of a rectangular plate and a wedge-shaped block of a sewing thread performance testing device and method proposed in the present invention; Figure 7 This is a structural schematic diagram of a sewing thread performance testing device and method proposed by the present invention when the wedge-shaped block is away from the hook; Figure 8 This is a schematic diagram of the second support frame connection structure of a sewing thread performance testing device and method proposed in the present invention; Figure 9 A schematic diagram of the backing plate connection structure of a sewing thread performance testing device and method proposed in the present invention; Figure 10 This is a schematic diagram of the internal connection structure of a pressure test bench for a sewing thread performance testing device and method proposed in the present invention; Figure 11 This is a structural schematic diagram of a sewing thread performance testing device and method proposed in the present invention when a hook is hooking a sewing thread; Figure 12 This is a schematic diagram of the rotary head connection structure of a sewing thread performance testing device and method proposed in the present invention.

[0017] In the figure: 1. Base; 2. First support frame; 3. Electric push rod; 4. Thread twisting mechanism; 41. Traction sleeve; 42. Horizontal groove; 43. Spiral groove; 44. Connecting seat; 45. Rotating head; 46. Docking column; 47. Guide block; 5. Connecting frame; 6. Servo motor; 7. Screw; 8. Rectangular plate; 9. Wedge block; 10. Support plate; 11. Spring; 12. Hook; 13. First guide rod; 14. Second support frame; 15. Sewing thread traction Mechanism; 151. Yarn drum; 152. Yarn winder; 153. Sewing thread guide bucket; 154. Wheel frame; 155. Guide wheel; 16. Pad; 17. Sewing thread tensioning mechanism; 171. First electric guide rail; 172. Pressure test bench; 173. Second electric guide rail; 174. Pressure sensor; 175. Movable clamp; 176. Fixed clamp; 177. Vertical rod; 178. Second guide rod; 179. PLC controller. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] Reference Figures 1-12, Embodiment 1, a sewing thread performance testing device, comprising a base 1, a first support frame 2 is welded on one side of the top outer wall of the base 1, and the top outer wall of the first support frame 2 is fixedly connected to an electric push rod 3 by screws, a connecting frame 5 is provided on the outer wall of one end of the electric push rod 3, and a thread twisting mechanism 4 is provided between the electric push rod 3 and the connecting frame 5, the outer wall of one side of the connecting frame 5 is fixedly connected to a servo motor 6 by screws, the output shaft of the servo motor 6 is fixedly connected to a screw rod 7 through a coupling, and a rectangular plate 8 is screwed on the outer wall of the screw rod 7, the outer wall of the bottom of the rectangular plate 8 is welded with adjacent wedge blocks 9, and the wedge blocks 9 include three, and the three obliquely distributed wedge blocks 9 are in the same horizontal plane, the outer wall of the bottom of the connecting frame 5 is welded with a support plate 10, and the outer wall of the top of the support plate 10 is fixedly connected with springs 11 distributed at equal distances, the outer wall of the top of the support plate 10 is rotatably connected with hooks 12 distributed at equal distances, and the springs 11 are fixedly connected between the hooks 12 and the support plate 10.

[0020] The electric push rod 3 pushes the connecting frame 5 to drive the hook 12 close to the guide wheel 155, and then the servo motor 6 drives the screw rod 7 to rotate to control the wedge block 9 at the bottom of the rectangular plate 8 to squeeze the hook 12, so that the spring 11 is compressed, and the hook 12 changes from an angle inclined to the support plate 10 to an angle parallel to the support plate 10. In this process, the amount of the hook 12 squeezed by the wedge block 9 can be changed by changing the moving distance of the rectangular plate 8. After that, the piston rod of the electric push rod 3 is retracted, and the hook 12 will hook the sewing thread, and the thread twisting mechanism 4 drives the connecting frame 5 to rotate, so that the sewing thread is twisted from multiple threads into one strand, which is convenient for the subsequent tensile test of the strand of sewing thread.

[0021] In this embodiment, the electric push rod 3, the thread twisting mechanism 4, the servo motor 6, and the wedge block 9 work together to control the gripping and rotation of the hook 12, achieving automatic conversion of a single sewing thread into a strand of wire. For example, by adjusting the movement distance of the rectangular plate 8, the amount of time the wedge block 9 squeezes the hook 12 can be precisely controlled, allowing for flexible selection of the number of strands to be twisted. This design transcends the limitations of traditional single-strand testing and realistically simulates the actual application scenario of a strand of wire.

[0022] In the second embodiment, the wire twisting mechanism 4 includes a traction sleeve 41, a horizontal groove 42, a spiral groove 43, a connecting seat 44, a rotating head 45, a docking column 46 and a guide block 47, wherein the traction sleeve 41 is fixedly connected to the top outer wall of the first support frame 2 by screws, the horizontal groove 42 is opened on one side outer wall of the traction sleeve 41, the spiral groove 43 is opened on the outer wall of the traction sleeve 41, and the spiral groove 43 is connected to the outer wall of one end of the horizontal groove 42, the connecting seat 44 is fixedly connected to the piston rod of the electric push rod 3, and the rotating head 45 is fixedly connected to one side outer wall of the connecting seat 44 On the top, the docking column 46 is fixedly connected to the outer wall of one side of the connecting frame 5, and the rotating head 45 is rotatably connected to the inner wall of one end of the docking column 46, the connecting seat 44 and the docking column 46 are both slidably connected to the inner wall of the traction sleeve 41, the guide block 47 is fixedly connected to the outer wall of one side of the docking column 46, and the guide block 47 is slidably connected to the inner wall of the horizontal groove 42, the top outer wall of the first support frame 2 is provided with a vertical plate, and the electric push rod 3 and the traction sleeve 41 are respectively fixedly connected to the outer walls on both sides of the vertical plate by screws, and the piston rod of the electric push rod 3 is located inside the traction sleeve 41.

[0023] In this embodiment, the thread twisting mechanism 4 is one of the core components of the present invention, which realizes the linear motion or rotational motion of the docking column 46 through the horizontal groove 42 and the spiral groove 43 in the traction sleeve 41. Specifically, the guide block 47 is fixed on the docking column 46. When the electric push rod 3 pulls back the docking column 46 to half its length, the guide block 47 slides along the horizontal groove 42, and the thread twisting mechanism 4 only moves linearly, which is suitable for a single-thread test mode; when the docking column 46 continues to be pulled back, the guide block 47 enters the spiral groove 43, driving the docking column 46 to rotate, thereby twisting multiple sewing threads into one strand. The rotational connection design between the rotating head 45 and the docking column 46 ensures the smoothness of the rotation, while the sliding connection of the connecting seat 44 ensures the stability of the movement.

[0024] In embodiment three, a second support frame 14 is welded to the other side of the top outer wall of the base 1, and a sewing thread pulling mechanism 15 is provided on the top outer wall of the second support frame 14, and the sewing thread pulling mechanism 15 includes a yarn drum 151 and a yarn winder 152, wherein the yarn drum 151 is rotatably connected to one end of the top outer wall of the second support frame 14, and the yarn winder 152 is fixedly connected to the other end of the top outer wall of the second support frame 14 by screws, and sewing thread is wound between the yarn drum 151 and the yarn winder 152, and the yarn winder 152 includes a mounting frame fixedly connected to the top outer wall of the second support frame 14 by screws, a winding roller rotatably connected to the inner wall of the mounting frame, and a driving motor fixedly connected to the outer wall of one end of the winding roller by a coupling, and the driving motor is fixedly connected to the outer wall of one end of the winding roller by bolts. Fixedly connected to the outer wall of one side of the mounting frame, the sewing thread pulling mechanism 15 also includes a sewing thread guide bucket 153, wherein there are two sewing thread guide buckets 153, and the two sewing thread guide buckets 153 are adjacently distributed at both ends of the top outer wall of the second support frame 14, and the sewing thread is passed through the inner wall of the sewing thread guide bucket 153, the sewing thread pulling mechanism 15 also includes a wheel frame 154, wherein there are four wheel frames 154, and the four wheel frames 154 are all welded to the top outer wall of the second support frame 14, and the inner walls of the four wheel frames 154 are rotatably connected to guide wheels 155, and the sewing thread is slidably connected to the outer wall of the guide wheel 155, and the guide wheel 155 is located at one end of the hook 12, and each hook 12 is distributed between every two guide wheels 155.

[0025] In this embodiment, the sewing thread is pre-wound onto the yarn drum 151. The drive motor of the yarn winder 152 is a stepper motor, and the winding speed is adjusted by the PLC controller 179. The guide wheel 155 has an annular groove on its surface to ensure that the sewing thread does not deviate during sliding. The entrances of the two sewing thread guide buckets 153 are designed to be trumpet-shaped. In addition, the wheel frame 154 and guide wheels 155 are arranged so that each hook 12 is located between the two guide wheels 155, ensuring that the sewing thread is evenly stressed during the grasping and twisting process.

[0026] In the fourth embodiment, a pad 16 is welded to one side of the top outer wall of the base 1, and a sewing thread tensile mechanism 17 is provided on the top outer wall of the pad 16. The sewing thread tensile mechanism 17 includes a first electric guide rail 171, a pressure test bench 172, a second electric guide rail 173, a pressure sensor 174, a movable clamp 175 and a fixed clamp 176, wherein the first electric guide rail 171 is fixedly connected to the top outer wall of the pad 16 by screws, the pressure test bench 172 is fixedly connected to the slider of the first electric guide rail 171, the second electric guide rail 173 is fixedly connected to the inside of the pressure test bench 172 by screws, the pressure sensor 174 is installed on the slider of the second electric guide rail 173, the movable clamp 175 is fixedly connected to one side outer wall of the pressure sensor 174, and the fixed clamp 176 is fixedly connected to the pressure sensor 174. The fixed clamp 176 is installed on the outer wall of one side of the pressure testing platform 172, and the fixed clamp 176 and the movable clamp 175 are respectively located at the two ends of the outer wall of one side of the pressure testing platform 172. A vertical rod 177 is welded to the bottom outer wall of the pressure testing platform 172, and a second linear bearing is installed on the inner wall of the vertical rod 177. A second guide rod 178 is slidably connected to the inner wall of the second linear bearing, and the second guide rod 178 is fixedly connected to the top outer wall of the pad 16. The top outer wall of the pressure testing platform 172 is fixedly connected to the PLC controller 179 by screws, and the PLC controller 179 is connected to the electric push rod 3, the servo motor 6, the yarn winder 152, the first electric guide rail 171, the second electric guide rail 173 and the pressure sensor 174 through signal lines.

[0027] The first motorized guide rail 171 of the sewing thread tensioning mechanism 17 utilizes a ball screw drive to ensure smooth movement of the pressure test platform 172. The clamping surfaces of the movable clamp 175 and the fixed clamp 176 are covered with high-friction rubber pads to prevent the sewing thread from slipping. The pressure sensor 174 utilizes a strain gauge sensor to accurately capture the peak force at the moment of fracture. The coordinated design of the vertical rod 177 and the second guide rod 178 enhances the lateral stability of the pressure test platform 172, preventing vibration interference during the tensioning process.

[0028] In this embodiment, the integrated pressure sensor 174, the PLC controller 179, the first electric guide rail 171 and the second electric guide rail 173 can monitor parameters such as tensile strength, tensile displacement, and breaking time in real time, and simultaneously record performance differences under different numbers of roots.

[0029] A first fixing plate is welded to one side of the top outer wall of the rectangular plate 8, and the screw rod 7 is screwed to the inner wall of the first fixing plate. A second fixing plate is welded to the other side of the top outer wall of the rectangular plate 8, and a first linear bearing is installed on the inner wall of the second fixing plate. A first guide rod 13 is slidably connected to the inner wall of the first linear bearing, and the outer wall of one end of the first guide rod 13 is fixedly connected to the outer wall of the connecting frame 5.

[0030] A method for testing the performance of a sewing thread comprises the following steps: S1: The sewing thread is drawn out from the yarn drum 151, passes through the sewing thread guide bucket 153 and the guide wheel 155 in sequence, and is wound onto the yarn winder 152 to form a straightened state; S2: The electric push rod 3 pushes the connecting frame 5 to drive the hook 12 to approach the guide wheel 155. The servo motor 6 drives the screw 7 to rotate, so that the wedge block 9 at the bottom of the rectangular plate 8 squeezes the hook 12. The spring 11 is compressed, and the hook 12 is adjusted from the inclined state to the parallel state to hook the sewing thread; S3: Select test mode: S3-1: Single thread test mode: The electric push rod 3 pulls back the docking column 46 to half its length, the guide block 47 slides along the horizontal groove 42, and the thread twisting mechanism 4 does not rotate. The thread twisting mechanism 4 only moves linearly to ensure that the single sewing thread remains independent. Subsequently, the single sewing thread is clamped by the movable clamp 175 and the fixed clamp 176; S3-2: One strand test mode: The electric push rod 3 continues to pull back the docking post 46, and the guide block 47 slides along the spiral groove 43, driving the docking post 46 to rotate. The connecting frame 5 rotates along with the docking post 46 to twist the multiple sewing threads into one strand; S4: The first electric guide rail 171 drives the pressure test platform 172 to approach the sewing thread, and the fixed clamp 176 and the movable clamp 175 synchronously clamp the two ends of the sewing thread; S5: The second electric guide rail 173 drives the movable clamp 175 away from the fixed clamp 176, stretching the sewing thread until it breaks. The pressure sensor 174 monitors the tensile strength data in real time and transmits the data to the PLC controller 179 for analysis and storage.

[0031] Working principle: First, the sewing thread is drawn from the yarn drum 151, passes through the sewing thread guide bucket 153 and the guide wheel 155, and is straightened by the yarn winder 152. The electric push rod 3 pushes the connecting frame 5 to drive the hook 12 close to the guide wheel 155. The servo motor 6 drives the screw rod 7 to rotate, causing the wedge block 9 to squeeze the hook 12, compressing the spring 11, and adjusting the hook 12 to a parallel state to hook the sewing thread.

[0032] Select single-wire or strand mode according to test requirements: In single-wire mode, the twisting mechanism 4 only moves in a straight line; In the one-strand mode, the thread twisting mechanism 4 rotates to twist multiple sewing threads into one strand; Subsequently, the clamp of the sewing thread tensile mechanism 17 clamps the two ends of the sewing thread, the second electric guide rail 173 stretches the sewing thread until it breaks, and the pressure sensor 174 records the data in real time and transmits it to the PLC controller 179.

[0033] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A sewing thread performance testing device, comprising a base (1), characterized in that: A first support frame (2) is welded to one side of the top outer wall of the base (1), and the top outer wall of the first support frame (2) is fixedly connected to an electric push rod (3) by screws, a connecting frame (5) is provided on the outer wall of one end of the electric push rod (3), and a wire twisting mechanism (4) is provided between the electric push rod (3) and the connecting frame (5), a servo motor (6) is fixedly connected to the outer wall of one side of the connecting frame (5) by screws, the output shaft of the servo motor (6) is fixedly connected to a screw rod (7) by a coupling, and a rectangular plate is screwed on the outer wall of the screw rod (7) (8), the bottom outer wall of the rectangular plate (8) is welded with adjacently distributed wedge blocks (9), and the wedge blocks (9) include three, and the three obliquely distributed wedge blocks (9) are on the same horizontal plane, the bottom outer wall of the connecting frame (5) is welded with a support plate (10), and the top outer wall of the support plate (10) is fixedly connected with springs (11) distributed at equal distances, the top outer wall of the support plate (10) is rotatably connected with hooks (12) distributed at equal distances, and the springs (11) are fixedly connected between the hooks (12) and the support plate (10).

2. A sewing thread performance testing device according to claim 1, characterized in that: A first fixing plate is welded to one side of the top outer wall of the rectangular plate (8), and the screw rod (7) is screwed to the inner wall of the first fixing plate. A second fixing plate is welded to the other side of the top outer wall of the rectangular plate (8), and a first linear bearing is installed on the inner wall of the second fixing plate. A first guide rod (13) is slidably connected to the inner wall of the first linear bearing, and the outer wall of one end of the first guide rod (13) is fixedly connected to the outer wall of the connecting frame (5).

3. A sewing thread performance testing device according to claim 1, characterized in that: The wire twisting mechanism (4) comprises a traction sleeve (41), a horizontal groove (42), a spiral groove (43), a connecting seat (44), a rotating head (45), a docking column (46) and a guide block (47), wherein the traction sleeve (41) is fixedly connected to the top outer wall of the first support frame (2) by screws, the horizontal groove (42) is opened on one side outer wall of the traction sleeve (41), the spiral groove (43) is opened on the outer wall of the traction sleeve (41), and the spiral groove (43) is connected to the outer wall of one end of the horizontal groove (42), the connecting seat (44) is fixedly connected to the piston rod of the electric push rod (3), and the rotating head (45) is fixedly connected to one side outer wall of the connecting seat (44). The connecting frame (5) is provided with a vertical plate on the outer wall, and the electric push rod (3) and the traction sleeve (41) are respectively fixedly connected to the outer wall of the vertical plate on both sides by screws, and the piston rod of the electric push rod (3) is located inside the traction sleeve (41).

4. A sewing thread performance testing device according to claim 1, characterized in that: A second support frame (14) is welded to the other side of the top outer wall of the base (1), and a sewing thread pulling mechanism (15) is provided on the top outer wall of the second support frame (14), wherein the sewing thread pulling mechanism (15) comprises a yarn drum (151) and a yarn winder (152), wherein the yarn drum (151) is rotatably connected to one end of the top outer wall of the second support frame (14), and the yarn winder (152) is fixedly connected to the other end of the top outer wall of the second support frame (14) by screws, and sewing thread is wound between the yarn drum (151) and the yarn winder (152); The yarn winder (152) includes a mounting frame fixedly connected to the top outer wall of the second support frame (14) by screws, a winding roller rotatably connected to the inner wall of the mounting frame, and a driving motor fixedly connected to the outer wall of one end of the winding roller by a coupling, and the driving motor is fixedly connected to the outer wall of one side of the mounting frame by bolts.

5. A sewing thread performance testing device according to claim 4, characterized in that: The sewing thread pulling mechanism (15) further includes a sewing thread guide bucket (153), wherein the sewing thread guide bucket (153) includes two sewing thread guide buckets (153), and the two sewing thread guide buckets (153) are adjacently distributed at both ends of the top outer wall of the second support frame (14), and the sewing thread is passed through the inner wall of the sewing thread guide bucket (153).

6. The sewing thread performance testing device according to claim 4, characterized in that: The sewing thread pulling mechanism (15) further includes a wheel frame (154), wherein the wheel frame (154) includes four, and the four wheel frames (154) are all welded to the top outer wall of the second support frame (14), and the inner walls of the four wheel frames (154) are rotatably connected to guide wheels (155), and the sewing thread is slidably connected to the outer wall of the guide wheel (155), and the guide wheel (155) is located at one end of the hook (12), and each hook (12) is distributed between every two guide wheels (155).

7. The sewing thread performance testing device according to claim 1, characterized in that: A backing plate (16) is welded to one side of the top outer wall of the base (1), and a sewing thread tensile mechanism (17) is provided on the top outer wall of the backing plate (16), wherein the sewing thread tensile mechanism (17) comprises a first electric guide rail (171), a pressure test bench (172), a second electric guide rail (173), a pressure sensor (174), a movable clamp (175) and a fixed clamp (176), wherein the first electric guide rail (171) is fixedly connected to the top outer wall of the backing plate (16) by screws, and the pressure test bench (172) is fixedly connected to the The second electric guide rail (173) is fixedly connected to the inside of the pressure test bench (172) by screws on the slider of the first electric guide rail (171), the pressure sensor (174) is installed on the slider of the second electric guide rail (173), the movable clamp (175) is fixedly connected to one side outer wall of the pressure sensor (174), the fixed clamp (176) is installed on one side outer wall of the pressure test bench (172), and the fixed clamp (176) and the movable clamp (175) are respectively located at two ends of one side outer wall of the pressure test bench (172).

8. The sewing thread performance testing device according to claim 7, characterized in that: A vertical rod (177) is welded to the outer wall of the bottom of the pressure test bench (172), and a second linear bearing is installed on the inner wall of the vertical rod (177). A second guide rod (178) is slidably connected to the inner wall of the second linear bearing, and the second guide rod (178) is fixedly connected to the top outer wall of the pad (16).

9. The sewing thread performance testing device according to claim 7, characterized in that: The top outer wall of the pressure test bench (172) is fixedly connected to a PLC controller (179) by screws, and the PLC controller (179) is connected to the electric push rod (3), the servo motor (6), the yarn winder (152), the first electric guide rail (171), the second electric guide rail (173) and the pressure sensor (174) by signal lines.

10. A method for testing the performance of a sewing thread, according to the sewing thread performance testing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: The sewing thread is drawn out from the yarn drum (151), passes through the sewing thread guide bucket (153), the guide wheel (155) in sequence, and is wound onto the yarn winder (152) to form a straightened state; S2: The electric push rod (3) pushes the connecting frame (5) to drive the hook (12) close to the guide wheel (155), and the servo motor (6) drives the screw (7) to rotate, so that the wedge block (9) at the bottom of the rectangular plate (8) squeezes the hook (12), the spring (11) is compressed, and the hook (12) is adjusted from the inclined state to the parallel state to hook the sewing thread; S3: Select test mode: S3-1: Single thread test mode: the electric push rod (3) pulls back the docking column (46) to half its length, the guide block (47) slides along the horizontal groove (42), the thread twisting mechanism (4) does not rotate, and the thread twisting mechanism (4) only moves linearly to ensure that the single sewing thread remains independent. Subsequently, the single sewing thread is clamped by the movable clamp (175) and the fixed clamp (176); S3-2: One strand test mode: the electric push rod (3) continues to pull back the docking post (46), the guide block (47) slides along the spiral groove (43), driving the docking post (46) to rotate, and the connecting frame (5) rotates along with the docking post (46) to twist the multiple sewing threads into one strand; S4: The first electric guide rail (171) drives the pressure test table (172) close to the sewing thread, and the fixed clamp (176) and the movable clamp (175) synchronously clamp the two ends of the sewing thread; S5: The second electric guide rail (173) drives the movable clamp (175) away from the fixed clamp (176), stretching the sewing thread until it breaks, and the pressure sensor (174) monitors the tensile strength data in real time and transmits the data to the PLC controller (179) for analysis and storage.

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