Automatic single yarn strength machine

Abstract

The invention provides an automatic single yarn strength machine, belonging to the technical field of yarn detection. The automatic single yarn strength machine comprises a wire clamping device, a vacuum groove is provided in the wire clamping device, and a vacuum rod is fixedly connected to the lower inner wall of the vacuum groove; a vacuum pump, the vacuum pump is arranged at the lower side of the wire clamping device, and an inserted air pipe is fixedly connected to the output end of the vacuum pump; a decompression mechanism, the decompression mechanism is arranged in the wire clamping device, and contacts with the vacuum pump when the yarn is stretched to perform a fiber strength test, and the vacuum groove is changed into a vacuum environment by extracting the air in the decompression mechanism through the vacuum pump; a sliding component and a driving mechanism, which directly clamp and fix the thread head sucked into the lead-in hole to prevent the thread head from being affected by wind and floating unsteadily and making it difficult to clamp the thread head.

Description

Technical Field

[0001] The invention belongs to the technical field of yarn detection, and in particular relates to an automatic single yarn strength machine. Background Art

[0002] In the prior art, a single yarn strength tester, also known as a single fiber strength tester or a single yarn strength tester, is a precision instrument specifically used to measure the strength of yarn or fiber. It is mainly used in the textile industry to help manufacturers and researchers understand the physical properties of yarns, such as tensile strength, elongation at break and other key parameters. This information is crucial for evaluating yarn quality, predicting fabric performance and optimizing the production process.

[0003] After searching, it was found that a polyester-cotton yarn single yarn strength detection device with the authorization announcement number "CN116124577B" includes an installation box, a clamping detection mechanism is arranged at the front end of the installation box, a longitudinal moving mechanism is arranged between the clamping detection mechanism and the installation box, and also includes a fixed control mechanism, the fixed control mechanism is arranged on the top side of the installation box, and is used to fix the polyester-cotton yarn reel that needs to be exported, and a tension mechanism is arranged at one end of the fixed control mechanism, which is used to keep the polyester-cotton yarn reel stable after the export is completed. The polyester-cotton yarn single yarn strength detection device can be used to export the packaged polyester-cotton yarn when the single yarn needs to be tested, and select the single yarn position suitable for testing. It can also effectively prevent the rolled polyester-cotton yarn from becoming loose during export, and directly test the selected single yarn after fixing it, thereby improving work efficiency.

[0004] The above technical scheme effectively prevents the wound polyester-cotton yarn from becoming loose, and directly detects the selected single yarn after being fixed, thereby improving work efficiency. However, the above technical scheme cannot guide the thread end before clamping it. Since the yarn is thin and light, if it is blown by the wind when clamping, the thread end will flutter, and the clamping mechanism will be empty, thereby limiting the detection environment and affecting the efficiency of continuous detection. Summary of the invention

[0005] The purpose of the present invention is to provide an automatic single yarn strength machine, aiming to solve the problem in the prior art that since the yarn is thin and light, if it is blown by the wind during clamping, the thread end will flutter and the clamping mechanism will be empty.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An automatic single yarn strength machine, comprising:

[0008] A wire clamping device, wherein a vacuum groove is provided in the wire clamping device, and a vacuum rod is fixedly connected to the lower inner wall of the vacuum groove;

[0009] An air pump, the air pump is arranged at the lower side of the wire clamping device, and the output end of the air pump is fixedly connected to an inserted air pipe;

[0010] A decompression mechanism is provided in the wire clamping device and is in contact with an air pump when the yarn is stretched to perform a fiber strength test. The air in the decompression mechanism is pumped out by the air pump to turn the vacuum tank into a vacuum environment.

[0011] A sliding assembly, the sliding assembly is arranged in the wire clamping device and is connected to the decompression mechanism, a detection module is slidably connected in the sliding assembly, the detection module seals the vacuum tank, and guides the yarn head and tests the fiber strength through the pressure difference formed by the vacuum environment in the vacuum tank;

[0012] The driving mechanism is connected with the clamping device, and the motor drives the clamping device to move up and down to complete the clamping of the yarn ends and the test of the fiber strength.

[0013] As a preferred solution of the present invention, the decompression mechanism includes an air suction socket, a lower sealing groove, an air suction port, a sealing spring and a sealing plate. The air suction socket is opened at the lower end of the air suction rod, the lower sealing groove is opened at the lower inner wall of the air suction socket, the air suction port is opened at the circumferential inner wall of the lower sealing groove, the sealing plate is slidably connected in the lower sealing groove, and the sealing spring is fixedly connected to the upper inner wall of the lower sealing groove and the upper end of the sealing plate.

[0014] As a preferred solution of the present invention, the sliding assembly includes a lead sleeve, a sliding groove, a reset groove, a reset plate, a reset spring, a connecting hole and a lead hole, the lead sleeve is fixedly connected in the wire clamping device, the lead hole is opened at the upper end of the lead sleeve, the sliding groove is opened at the lower inner wall of the lead hole, the reset groove is opened at the circumferential inner wall of the sliding groove, the detection module is slidably connected in the sliding groove, the reset plate is fixedly connected to one side end of the detection module and in the reset groove, the reset spring is fixedly connected to the lower inner wall of the reset groove and the lower end of the reset plate, and the connecting hole is opened at the lower inner wall of the sliding groove.

[0015] As a preferred solution of the present invention, a clamping module and a detection module are provided in the detection module, and when the clamping module is closed, the vacuum tank is sealed.

[0016] As a preferred solution of the present invention, the elastic coefficient of the blocking spring is smaller than the elastic coefficient of the return spring.

[0017] As a preferred scheme of the present invention, the driving mechanism includes a pad, a limiting slide rod, a top plate, a rotating sleeve, a screw, a movable plate, a threaded groove, a limiting slide rod and a driving motor, and two limiting slide rods and limiting slide rods are provided. The pad is fixedly connected to the lower end of the vacuum pump, the two limiting slide rods are fixedly connected to the upper end of the pad, the top plate is fixedly connected to the upper ends of the two limiting slide rods, the rotating sleeve is fixedly connected to the upper end of the pad, the screw is rotatably connected to the rotating sleeve, the movable plate is fixedly connected to one side end of the wire clamping device, the threaded groove and the two limiting slide rods are both opened at the upper end of the movable plate, the two limiting slide rods slide in the two limiting slide rods respectively, the threaded groove is threadably connected to the screw, and the driving motor is fixedly connected to the upper end of the top plate.

[0018] As a preferred solution of the present invention, a yarn box is fixedly connected to the upper end of the top plate, and a yarn hole is opened at the upper end of the top plate.

[0019] As a preferred solution of the present invention, the lower end of the top plate is fixedly connected to a connecting plate, one side end of the connecting plate is fixedly connected to an upper fixed tube, a wire threading groove is provided at the upper end of the upper fixed tube, one side end of the upper fixed tube is fixedly connected to a fixed sleeve, a fixed cylinder is fixedly connected inside the fixed sleeve, an output end of the fixed cylinder is fixedly connected to an upper fixed block, and the upper fixed block slides inside the upper fixed tube.

[0020] As a preferred solution of the present invention, a sealing ring is fixedly connected to the circumferential inner wall of the air extraction socket and the circumferential surface of the sealing plate.

[0021] As a preferred solution of the present invention, a control panel and a display module are provided on the upper end of the pad.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. Through this device, before clamping the yarn, the detection module opens the vacuum air tank in the clamping device at the moment, and the clamping device generates suction force on the external air to suck the yarn into the lead hole for preliminary fixation, and then the thread end sucked into the lead hole is directly clamped and fixed to avoid the thread end being affected by the wind and floating around, making it difficult to clamp the thread end, so as to achieve the guiding effect of the thread end and improve the efficiency of yarn detection.

[0024] 2. Through this device, the vacuum pump replaces the traditional cylinder motor as the drive. After the vacuum tank is evacuated to a vacuum state, the pressure difference between the upper and lower ends of the detection module is used as a power to stretch the yarn to detect its strength. When the thread end is adsorbed, it is only necessary to open the wire clamping device that has been evacuated to a vacuum before. No additional vacuum adsorption device or fan is required, which reduces the cost required for the guiding mechanism of the yarn end.

[0025] 3. With this device, the yarn box is located above the device. During testing, the yarn is directly pulled out for a distance for testing. After the test is completed, the broken part of the yarn can be introduced into the wire clamping device for testing again. Continuous multiple tests on the yarn of the same material can ensure the accuracy of the data. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 It is a structural stereogram of the present invention;

[0028] Figure 2 It is a three-dimensional diagram of the local structure in the present invention;

[0029] Figure 3 It is an exploded view of the first structure in the present invention;

[0030] Figure 4 It is an exploded view of the second structure in the present invention;

[0031] Figure 5 It is a cross-sectional view of the first structure in the present invention;

[0032] Figure 6 It is a cross-sectional exploded view of the structure in the present invention;

[0033] Figure 7 It is a structural explosion diagram of the detection module in the present invention;

[0034] Figure 8 For the present invention Figure 5 The enlarged view of point A in the middle;

[0035] Fig. 9 For the present invention Figure 6 Enlarged view of point B in the middle.

[0036] In the figure: 1. Wire clamping device; 101. Vacuum groove; 102. Air extraction rod; 103. Air extraction socket; 104. Lower blocking groove; 105. Air extraction port; 106. Blocking spring; 107. Blocking plate; 108. Insert trachea; 109. Sealing ring; 110. Connecting hole; 2. Lead sleeve; 201. Sliding groove; 202. Reset groove; 203. Reset plate; 204. Reset spring; 205. Lead hole; 3. Detection module; 301. Blocking block; 302. Clamping block; 303. Pressure Force sensor; 304, air vent; 305, closed cylinder; 401, pad; 402, vacuum pump; 403, limit slide; 404, top plate; 405, rotating sleeve; 406, screw; 407, moving plate; 408, threaded groove; 409, limit slide; 410, driving motor; 411, yarn box; 501, yarn hole; 502, connecting plate; 503, upper fixed cylinder; 504, threading groove; 505, fixed sleeve; 506, fixed cylinder; 507, upper fixed block. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] See also Figure 1-Figure 9 , the present invention provides the following technical solutions:

[0039] An automatic single yarn strength machine, comprising:

[0040] A wire clamping device 1, wherein a vacuum groove 101 is provided in the wire clamping device 1, and a vacuum rod 102 is fixedly connected to the lower inner wall of the vacuum groove 101;

[0041] The air pump 402 is arranged at the lower side of the wire clamping device 1, and the output end of the air pump 402 is fixedly connected with the inserted air pipe 108;

[0042] The decompression mechanism is arranged in the wire clamping device 1 and contacts with the vacuum pump 402 when the yarn is stretched to test its fiber strength. The vacuum pump 402 extracts the air in the decompression mechanism to turn the vacuum tank 101 into a vacuum environment;

[0043] A sliding assembly is arranged in the wire clamping device 1 and is connected to the decompression mechanism. A detection module 3 is slidably connected in the sliding assembly. The detection module 3 seals the vacuum groove 101 and guides the yarn head and tests the fiber strength through the pressure difference formed by the vacuum environment in the vacuum groove 101.

[0044] The driving mechanism is connected with the clamping device 1, and the motor drives the clamping device 1 to move up and down to complete the clamping of the yarn ends and the test of the fiber strength.

[0045] In a specific embodiment of the present invention, the wire clamping device 1 is connected to the driving mechanism, the yarn head is arranged on the upper side of the device, the insertion air pipe 108 is fixed at the suction end of the suction pump 402, and is inserted into the wire clamping device 1 to extract the air in the wire clamping device 1. After the driving mechanism drives the wire clamping device 1 to move upward, the wire head is clamped by the detection module 3. The detection module 3 is provided with an upper and lower part. The upper ends of the sealing block 301 and the clamping block 302 are provided with a vent 304 for ventilation. The upper clamping block 302 is provided with a cylinder-driven clamping head for clamping the yarn, and the lower sealing block 301 is provided with a cylinder-driven closing cylinder 305 for closing the vent 304, and the sealing block 301 is fixed to the reset plate 203, and a pressure is fixed between the sealing block 301 and the clamping block 302. The force sensor 303 is used to detect the elastic force of the yarn. After the clamping block 302 drives the clamping head to clamp the yarn, the closing cylinder 305 closes the vent 304 on the blocking block 301 to seal the sliding groove 201. After clamping, the wire clamping device 1 moves downward to contact the output end of the vacuum pump 402. The yarn is pulled out of the yarn box 411 as the wire clamping device 1 moves downward. Then the upper fixing block 507 is pushed forward to fix the upper end of the yarn. When the wire clamping device 1 contacts the vacuum pump 402, the air pipe 108 is inserted into the vacuum port 103 and the blocking plate 107 is pushed upward to the upper end of the vacuum port 105. Then the vacuum pump 402 extracts the air in the vacuum tank 101 by inserting the air pipe 108. The detection module 3 and the reset spring 204 respectively The reset groove 202 and the sliding groove 201 are blocked, and the sliding groove 201 is connected to the vacuum groove 101 through the connecting hole 110 and the air extraction port 105, so the air in the sliding groove 201 is also extracted. At this time, since the sliding groove 201 and the vacuum groove 101 are vacuum, and the clamping block 302 closes the vent 304 so that air cannot flow in, a pressure difference is formed at the upper and lower ends of the detection module 3. The pulling force of the pressure difference pulls the detection module 3 downward and squeezes the reset spring 204 to shrink. The closed cylinder 305 closes the vent 304, so that the vacuum environment in the sliding groove 201 forms a downward pulling force on the blocking block 301, and the clamping block 302 is fixed to the yarn. When the detection module 3 moves downward, an upward rebound force is formed on the clamping block 302, and the pressure sensor The device 303 is arranged between the blocking block 301 and the clamping block 302, and the elastic strength of the yarn is tested by the downward and upward pulling forces of the blocking block 301 and the clamping block 302 respectively, until the yarn breaks and the upward pulling force of the yarn on the clamping block 302 disappears, and the test is completed. After the test is completed, the rest of the yarn is tested, and the driving mechanism drives the clamping device 1 to move upward. At this time, the inserted air pipe 108 slides out of the air extraction socket 103, and the blocking spring 106 rebounds to push the blocking plate 107 to the upper inner wall of the air extraction socket 103 to block the air extraction port 105, so that the vacuum groove 101 is maintained in a vacuum state until the clamping device 1 moves to the lower end of the broken yarn head, and the closed sealing cylinder 305 and the clamping block 302 open the vent 304.Since the sliding groove 201 and the vacuum groove 101 are vacuum, the air outside the wire guide hole 205 is sucked into the sliding groove 201 and the vacuum groove 101, and the thread end is sucked into the wire guide hole 205, and the reset spring 204 rebounds to push the detection module 3 to the lower end of the wire guide hole 205, and the opening of the vent hole 304 matches the lower opening of the wire guide hole 205, so that when the detection module 3 moves upward, the clamping block 302 is sleeved on the outside of the yarn end, and then the sealing cylinder 305 and the clamping block 302 are closed to re-seal the vacuum groove 101, and the above operation is repeated to perform repeated tensile tests on the yarn to detect the yarn limiting strength. Before clamping the yarn, the detection module 3 opens the vacuum air tank in the wire clamping device 1 at the moment, and the wire clamping The device 1 uses the suction force generated by the external air to suck the yarn into the wire guide hole 205 for preliminary fixation, and then directly clamps and fixes the thread end sucked into the wire guide hole 205 to prevent the thread end from being affected by the wind and drifting and difficult to clamp, thereby achieving the guiding effect of the thread end to improve the efficiency of yarn detection. The vacuum pump 402 is used instead of the traditional cylinder motor as a drive, and after the vacuum tank 101 is evacuated to a vacuum state, the pressure difference between the upper and lower ends of the detection module 3 is used as a power to stretch the yarn to detect its strength. When the thread end is adsorbed, it is only necessary to open the wire clamping device 1 that has been evacuated to a vacuum before, and no additional vacuum adsorption device or fan is required, which reduces the cost required for the yarn end guiding mechanism.

[0046] For details, please refer to Figure 1-Figure 9 The pressure reducing mechanism includes an air suction socket 103, a lower blocking groove 104, an air suction port 105, a blocking spring 106 and a blocking plate 107. The air suction socket 103 is opened at the lower end of the air suction rod 102, the lower blocking groove 104 is opened at the lower inner wall of the air suction socket 103, the air suction port 105 is opened at the circumferential inner wall of the lower blocking groove 104, the blocking plate 107 is slidably connected in the lower blocking groove 104, and the blocking spring 106 is fixedly connected to the upper inner wall of the lower blocking groove 104 and the upper end of the blocking plate 107.

[0047] In this embodiment, when the air pipe 108 is not inserted into the air extraction socket 103, the blocking spring 106 pushes the blocking plate 107 to make the blocking plate 107 press against the upper inner wall of the air extraction socket 103 to seal the lower end of the wire clamping device 1. When the driving mechanism drives the wire clamping device 1 to move downward and contact the air extraction pump 402, the air pipe 108 is inserted into the air extraction socket 103 and the air pipe 108 fits the inner wall of the air extraction socket 103, and pushes the blocking plate 107 upward to squeeze the blocking spring 106 to contract. At this time, the blocking plate 107 is When pushed to the upper end of the air extraction port 105, the air extraction pump 402 extracts the air in the vacuum groove 101 and the sliding groove 201 through the air holes on the surface of the inserted air pipe 108, and forms a downward pulling force on the detection module 3. When the wire clamping device 1 moves upward again, the inserted air pipe 108 is pulled out of the air extraction socket 103, and the sealing spring 106 that was squeezed and contracted before rebounds to push the sealing plate 107 to the upper inner wall of the air extraction socket 103, and the air extraction port 105 is sealed again to make the vacuum groove 101 and the sliding groove 201 become a vacuum and sealed state.

[0048] For details, please refer to Figure 1-Figure 9 The sliding assembly includes a lead sleeve 2, a sliding groove 201, a reset groove 202, a reset plate 203, a reset spring 204, a connecting hole 110 and a lead hole 205. The lead sleeve 2 is fixedly connected to the wire clamping device 1. The lead hole 205 is opened at the upper end of the lead sleeve 2. The sliding groove 201 is opened at the lower inner wall of the lead hole 205. The reset groove 202 is opened at the circumferential inner wall of the sliding groove 201. The detection module 3 is slidably connected in the sliding groove 201. The reset plate 203 is fixedly connected to one side end of the detection module 3 and in the reset groove 202. The reset spring 204 is fixedly connected to the lower inner wall of the reset groove 202 and the lower end of the reset plate 203. The connecting hole 110 is opened at the lower inner wall of the sliding groove 201.

[0049] In this embodiment: the lead sleeve 2 is cylindrical and inserted into the wire clamping device 1, the sliding groove 201 is connected with the vacuum groove 101 through the connecting hole 110, and the reset spring 204 is in a contracted state to push the detection module 3 against the lower end of the lead hole 205. When the closing cylinder 305 is closed, the detection module 3 and the reset plate 203 respectively block the sliding groove 201 and the reset groove 202 to seal the upper end of the wire clamping device 1. The lead hole 205 is an arc-shaped outward expansion opening, which is convenient for guiding the thread end. When the vacuum groove 101 is evacuated outward, the upper and lower pressure differences of the detection module 3 form a thrust to push the detection module 3 downward and squeeze the reset spring 204 to contract. When the opening of the vent hole 304 is opened, the pressure difference disappears, and the previously squeezed and contracted reset spring 204 rebounds to push the detection module 3 upward to press against the lower end of the lead hole 205 again, and put it on the outside of the yarn end.

[0050] For details, please refer to Figure 1-Figure 9The detection module 3 is provided with a clamping module and a detection module. When the clamping module is closed, the vacuum tank 101 is sealed.

[0051] In this embodiment: the detection module 3 is divided into two parts, the upper and lower parts of the blocking block 301 and the clamping block 302. The vent 304 is opened between the blocking block 301 and the clamping block 302. The vent 304 drives the clamping block to slide through the internal cylinder to clamp or loosen the yarn. When the yarn is introduced into the lead-in hole 205, the detection module 3 slides upward to introduce the thread end into the vent 304. The closed cylinder 305 is arranged in the blocking block 301 and driven by the cylinder to close the vent 304 opened on the blocking block 301, and the sliding groove 201 is blocked. The closed cylinder 305 and the clamping block 302 are driven by the external control panel at the same time. When opened, the clamping block 302 loosens the broken thread end, and the closing cylinder 305 opens the sealed sliding groove 201 to allow it to circulate with the external air. When closed, the closing cylinder 305 closes the vent hole 304 to complete the blocking, and the clamping block 302 closes to complete the clamping of the thread end. When the yarn is pulled, the pressure difference between the upper and lower ends of the blocking block 301 forms a downward thrust on the blocking block 301, and the resilience of the yarn forms an upward pulling force on the clamping block 302. The pressure sensor 303 fixed between the blocking block 301 and the blocking block 301 detects the tensile strength of the upper and lower ends, and then detects the fiber strength of the yarn.

[0052] For details, please refer to Figure 1-Figure 9 , the elastic coefficient of the blocking spring 106 is smaller than the elastic coefficient of the return spring 204 .

[0053] In this embodiment: the blocking spring 106 is more difficult to expand and contract than the return spring 204, so that when the return spring 204 is pulled downward by the air pressure difference, the blocking spring 106 still presses against the blocking plate 107 to seal the air outlet 105, ensuring that the wire clamping device 1 always remains sealed during the tensile test.

[0054] For details, please refer to Figure 1-Figure 9The driving mechanism includes a pad 401, a limiting slide bar 403, a top plate 404, a rotating sleeve 405, a screw 406, a movable plate 407, a threaded groove 408, a limiting slide groove 409 and a driving motor 410. The limiting slide bar 403 and the limiting slide groove 409 are provided with two. The pad 401 is fixedly connected to the lower end of the air pump 402, the two limiting slide bars 403 are fixedly connected to the upper end of the pad 401, and the top plate 404 is fixedly connected to the upper ends of the two limiting slide bars 403. End, the rotating sleeve 405 is fixedly connected to the upper end of the pad 401, the screw 406 is rotatably connected in the rotating sleeve 405, the movable plate 407 is fixedly connected to one side end of the wire clamping device 1, the threaded groove 408 and the two limiting slide grooves 409 are both opened at the upper end of the movable plate 407, the two limiting slide rods 403 slide in the two limiting slide grooves 409 respectively, the threaded groove 408 is threadedly connected to the screw 406, and the driving motor 410 is fixedly connected to the upper end of the top plate 404.

[0055] In this embodiment: the rotating sleeve 405 is sleeved outside the screw 406, and the screw 406 rotates inside the rotating sleeve 405, the movable plate 407 is connected to the wire clamping device 1, and is sleeved outside the screw 406 through the thread groove 408 and is threadedly connected to the screw 406, the output end of the driving motor 410 passes through the upper end of the top plate 404 and contacts the upper end of the screw 406, the limiting slide bar 403 is used to limit the movable plate 407 and support the top plate 404, when the wire clamping device 1 is driven to move up and down, the driving motor 410 drives the screw 406 to rotate, because the movable plate 407 is limited by the limiting slide bar 403 and cannot rotate, so that the movable plate 407 can only move up and down, slide upward to the thread end to clamp and fix the thread end, and pull the detected yarn out to a certain length when moving downward, so as to perform strength detection on the yarn.

[0056] For details, please refer to Figure 1-Figure 9 A yarn box 411 is fixedly connected to the upper end of the top plate 404 , and a yarn hole 501 is opened at the upper end of the top plate 404 .

[0057] In this embodiment: the yarn box 411 is used to place a certain length of yarn, and the front end of the yarn passes through the yarn hole 501 and extends into the threading groove 504. When testing, the thread clamping device 1 moves downward to pull the yarn out of the yarn box 411. When the yarn breaks, the thread clamping device 1 slides upward again to clamp and fix the broken thread end, so as to perform repeated elastic force tests on a section of yarn.

[0058] For details, please refer to Figure 1-Figure 9The lower end of the top plate 404 is fixedly connected to a connecting plate 502, one side end of the connecting plate 502 is fixedly connected to an upper fixed cylinder 503, a threading groove 504 is provided at the upper end of the upper fixed cylinder 503, one side end of the upper fixed cylinder 503 is fixedly connected to a fixed sleeve 505, a fixed cylinder 506 is fixedly connected inside the fixed sleeve 505, an upper fixed block 507 is fixedly connected to the output end of the fixed cylinder 506, and the upper fixed block 507 slides inside the upper fixed cylinder 503.

[0059] In this embodiment: the yarn passes through the lower end of the threading groove 504, the upper fixed block 507 is fixed to the extended end of the fixed cylinder 506 and slides in the upper fixed tube 503. When the detection is completed, the output end of the fixed cylinder 506 retracts to loosen the yarn, so that the wire clamping device 1 can pull the yarn head downward to stretch the yarn. When the wire clamping device 1 moves to the bottom end, the extended end of the fixed cylinder 506 extends to make the upper fixed block 507 rest against the inner wall of the threading groove 504 and fix the upper end of the yarn. After both ends of the yarn are fixed, the vacuum pump 402 is driven to stretch the yarn through the pressure difference for strength detection.

[0060] For details, please refer to Figure 1-Figure 9 The circumferential inner wall of the air extraction socket 103 and the circumferential surface of the blocking plate 107 are both fixedly connected with a sealing ring 109 .

[0061] In the present embodiment: the sealing rings 109 are respectively arranged at multiple air flow locations in the wire clamping device 1, so as to enhance the sealing performance of each air flow location in the wire clamping device 1. The sealing rings 109 are made of sealing material. When the air pipe 108 is inserted into the exhaust port 103, the lower sealing groove 104 can be sealed to ensure that the air in the vacuum groove 101 is completely exhausted, and the upper and lower ends of the lower sealing groove 104 and the sliding groove 201 are isolated to avoid air leakage.

[0062] For details, please refer to Figure 1-Figure 9 A control panel and a display module are provided at the upper end of the pad 401 .

[0063] In this embodiment: the control panel is connected to the clamping block 302, the closed cylinder 305, the vacuum pump 402, the pressure sensor 303, the fixed cylinder 506 and the drive motor 410 signals to control the drive of multiple groups of mechanisms, and the force intensity of the pressure sensor 303 is directly displayed on the display module to observe the yarn strength.

[0064] It should be noted that the clamping block 302, the closed cylinder 305, the vacuum pump 402, the pressure sensor 303, the fixed cylinder 506 and the driving motor 410 used in the present device are all existing technologies and will not be described in detail here.

[0065] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An automatic single yarn strength machine, characterized in that: include: A wire clamping device (1), wherein a vacuum groove (101) is provided in the wire clamping device (1), and a vacuum rod (102) is fixedly connected to the lower inner wall of the vacuum groove (101); An air pump (402), the air pump (402) being arranged on the lower side of the wire clamping device (1), and the output end of the air pump (402) being fixedly connected to an inserted air pipe (108); A decompression mechanism, the decompression mechanism is arranged in the wire clamping device (1) and contacts the vacuum pump (402) when the yarn is stretched to perform a fiber strength test. The vacuum pump (402) extracts air from the decompression mechanism to turn the vacuum groove (101) into a vacuum environment. The decompression mechanism comprises a vacuum socket (103), a lower blocking groove (104), a vacuum port (105), a blocking spring (106) and a blocking plate (107). The air extraction socket (103) is provided at the lower end of the air extraction rod (102); the lower blocking groove (104) is provided at the lower inner wall of the air extraction socket (103); the air extraction port (105) is provided at the circumferential inner wall of the lower blocking groove (104); the blocking plate (107) is slidably connected in the lower blocking groove (104); and the blocking spring (106) is fixedly connected to the upper inner wall of the lower blocking groove (104) and the upper end of the blocking plate (107); A sliding assembly, the sliding assembly being arranged in the wire clamping device (1) and being connected to the decompression mechanism, the sliding assembly being slidably connected to a detection module (3), the detection module (3) sealing the vacuum groove (101), and guiding the yarn head and testing the fiber strength through the pressure difference formed by the vacuum environment in the vacuum groove (101), the sliding assembly comprising a wire guide sleeve (2), a sliding groove (201), a reset groove (202), a reset plate (203), a reset spring (204), a connection hole (110) and a wire guide hole (205), the wire guide sleeve (2) being fixedly connected to the wire clamping device (1), The lead hole (205) is formed at the upper end of the lead sleeve (2), the sliding groove (201) is formed at the lower inner wall of the lead hole (205), the reset groove (202) is formed at the circumferential inner wall of the sliding groove (201), the detection module (3) is slidably connected in the sliding groove (201), the reset plate (203) is fixedly connected to one side end of the detection module (3) and is in the reset groove (202), the reset spring (204) is fixedly connected to the lower inner wall of the reset groove (202) and the lower end of the reset plate (203), and the connection hole (110) is formed at the lower inner wall of the sliding groove (201); A detection module, wherein a clamping module and a detection module are provided in the detection module (3); when the clamping module is closed, the vacuum groove (101) is sealed; the clamping module comprises a blocking block (301), a clamping block (302), a vent (304) and a closed cylinder (305); the detection module comprises a pressure sensor (303); the blocking block (301) is slidably connected to the sliding groove (201); the blocking block (301) is arranged at the lower end of the clamping block (302); the vent (304) is opened in the middle of the blocking block (301) and the clamping block (302); the pressure sensor (303) is arranged in the middle of the blocking block (301) and the clamping block (302); and the closed cylinder (305) is arranged in the blocking block (301) and used to close the vent (304); A driving mechanism is connected to the thread clamping device (1), and a motor is used to drive the thread clamping device (1) to move up and down to complete the clamping of the yarn ends and the testing of the fiber strength.

2. The automatic single yarn strength machine according to claim 1, characterized in that: The elastic coefficient of the blocking spring (106) is smaller than the elastic coefficient of the return spring (204).

3. The automatic single yarn strength machine according to claim 2, characterized in that: The driving mechanism comprises a pad (401), a limiting slide bar (403), a top plate (404), a rotating sleeve (405), a screw rod (406), a movable plate (407), a threaded groove (408), a limiting slide groove (409) and a driving motor (410), wherein two limiting slide bars (403) and two limiting slide grooves (409) are provided, the pad (401) is fixedly connected to the lower end of the air pump (402), the two limiting slide bars (403) are fixedly connected to the upper end of the pad (401), and the top plate (404) is fixedly connected to the upper ends of the two limiting slide bars (403). The rotating sleeve (405) is fixedly connected to the upper end of the backing plate (401), the screw rod (406) is rotatably connected in the rotating sleeve (405), the movable plate (407) is fixedly connected to one side end of the wire clamping device (1), the threaded groove (408) and the two limiting sliding grooves (409) are both provided at the upper end of the movable plate (407), the two limiting sliding rods (403) slide in the two limiting sliding grooves (409) respectively, the threaded groove (408) is threadably connected to the screw rod (406), and the driving motor (410) is fixedly connected to the upper end of the top plate (404).

4. The automatic single yarn strength machine according to claim 3, characterized in that: The upper end of the top plate (404) is fixedly connected to a yarn box (411), and the upper end of the top plate (404) is provided with a yarn hole (501).

5. The automatic single yarn strength machine according to claim 4, characterized in that: The lower end of the top plate (404) is fixedly connected to a connecting plate (502), one side end of the connecting plate (502) is fixedly connected to an upper fixed tube (503), an upper end of the upper fixed tube (503) is provided with a threading groove (504), one side end of the upper fixed tube (503) is fixedly connected to a fixing sleeve (505), a fixing cylinder (506) is fixedly connected inside the fixing sleeve (505), an output end of the fixing cylinder (506) is fixedly connected to an upper fixing block (507), and the upper fixing block (507) slides inside the upper fixed tube (503).

6. The automatic single yarn strength machine according to claim 5, characterized in that: The circumferential inner wall of the air extraction socket (103) and the circumferential surface of the sealing plate (107) are both fixedly connected with a sealing ring (109).

7. The automatic single yarn strength machine according to claim 6, characterized in that: A control panel and a display module are provided at the upper end of the pad (401).

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