A self-calibrating mechanism for detecting yarn twist and its usage method

Abstract

This invention relates to the field of testing auxiliary devices, and discloses a yarn twist detection self-correction mechanism and its usage method. The mechanism includes a base plate, with a detector fixedly connected to one end of the top of the base plate and a connecting bridge fixedly connected to the other end. A scale is fixedly connected between the detector and the connecting bridge. A fixed plate is fixedly mounted on one side of the detector, and a main shaft is fixedly mounted on the detector. Multiple fixed rods are fixedly connected to the fixed plate. A ring-shaped disk is fixedly connected to one side of the fixed guide ring. A mating gear is rotatably connected to the inner ring of the ring-shaped disk, and a ratchet is fixedly connected to one side of the mating gear. In this yarn twist detection self-correction mechanism, when the main shaft stops, the lifting block resets, causing the mating gear and ratchet to brake, thus placing the ratchet in a suspended and rotatable state. This allows the yarn to be automatically corrected again, resulting in a de-twisting effect and improving the test results.

Description

Technical Field

[0001] This invention relates to the field of detection auxiliary device technology, specifically to a yarn twist detection self-calibration mechanism and its usage method. Background Technology

[0002] Existing direct counting methods utilize both hand-cranked and electric yarn twist meters. However, regardless of the method, during the untwisting of the roving, the original length of roving becomes a loose, multi-strand yarn. At this point, the operator uses a needle to separate the individual strands. Subsequently, the number of these multi-strand yarns needs to be counted. During this process, the overlapping and disordered positions of the multi-strand yarns in their loose state make counting difficult. Furthermore, manually counting the multi-strand yarns can easily introduce errors, affecting the metric twist system. The results of numerous tests, and the possibility of incomplete untwisting during the untwisting detection by the yarn twist meter, with one end of the yarn still in a twisted state, necessitate manual yarn picking using tools. During this picking process, the yarn twist meter is simultaneously activated to detect untwisting, and the number of turns is entirely based on experience, followed by manual yarn handling. This further amplifies the error, as the system lacks self-correction and affects the tex twist coefficient test results. Therefore, existing equipment exhibits significant errors in testing both the tex twist coefficient and metric twist coefficient, leading to inaccurate twist results. We propose a self-correcting mechanism for yarn twist detection and its application method. Summary of the Invention

[0003] The purpose of this invention is to provide a yarn twist detection self-calibration mechanism and its usage method to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a yarn twist detection and self-calibration mechanism, comprising a base plate, a detector fixedly connected to one end of the top of the base plate, a connecting bridge fixedly connected to the other end of the top of the base plate, a scale fixedly connected between the detector and the connecting bridge, a chuck slidably connected to the scale, a fixed plate fixedly mounted on one side of the detector, a main shaft fixedly mounted on the detector, multiple fixed rods fixedly connected to the fixed plate, fixed guide rings fixedly connected between the multiple fixed rods, an annular disk fixedly connected to one side of the fixed guide ring, a mating gear rotatably connected to the inner ring of the annular disk, a ratchet fixedly connected to one side of the mating gear, a fixed plug fixedly mounted on the inner ring of the ratchet, a second pressure plate hinged to one side of the fixed plug, and a first pressure plate hinged to the fixed plug near the second pressure plate; multiple first springs fixedly connected to one end of the main shaft, each first spring having a lifting block fixedly connected to one end, and the lifting blocks extending to the inner ring of the mating gear after rotation of the main shaft.

[0005] Preferably, a slide rod is rotatably connected to the bottom of the fixed disk, a slidable blade is slidably connected to the slide rod, a second cylinder is fixedly connected between the slid and the fixed disk, a transmission gear is rotatably connected to the slid, the transmission gear is keyed to the slide rod, a replica screw is fixedly connected to one end of the slide rod, a rotating ring is sleeved on the replica screw, and the transmission gear and the mating gear mesh together.

[0006] Preferably, multiple electromagnets are fixedly installed on the other side of the fixed guide ring. The electromagnets are fixedly connected to the fixed rods. A suspension plate is fixedly installed on the same end of the multiple fixed rods. The suspension plate is slidably connected to the ratchet. A displacement plate is slidably connected to the multiple fixed rods. Multiple iron plates are provided on one side of the displacement plate. The iron plates are slidably connected to the fixed rods.

[0007] Preferably, the inner ring of the shifting disk is rotatably connected to multiple pawls, the pawls are engaged with ratchet wheels, each pawl is fixedly connected to the shifting disk with a second spring, and a stop block is fixedly installed on the inner ring of the shifting disk near each pawl.

[0008] Preferably, a motor is fixedly installed on one side of the connecting bridge, a reciprocating lead screw is sleeved on the output shaft of the motor, one end of the reciprocating lead screw is connected to the detector, and a combing rod is threaded onto the reciprocating lead screw. One end of the combing rod extends upwards towards the scale, thereby forming a ring structure for placing yarn.

[0009] Preferably, the bottom of the combing rod abuts against the base plate, and sealing rings are fixedly installed on both sides of the inner ring at one end of the combing rod. An air ring is fixedly connected between the two sealing rings. The air ring has multiple negative pressure holes for adsorbing multi-strand yarns, and a pipe interface is provided on one side of the combing rod.

[0010] Preferably, the inner ring of the gas ring is fixedly installed with a plurality of protrusions, and each of the protrusions is fixedly connected with a distribution plate. An air pressure channel is formed between two adjacent distribution plates, and the air pressure channel corresponds to each negative pressure hole.

[0011] Preferably, a first cylinder is fixedly connected to the outer side of one end of the combing rod, the first cylinder extends into the combing rod, a separating rod is fixedly installed at one end of the first cylinder, the separating rod is perpendicular to the axis of the annular structure at one end of the combing rod, and a distance sensor is fixedly installed at the bend of the combing rod.

[0012] Preferably, a tension gauge is fixedly installed on one side of the clamp, and a tension rod is hinged to one side of the clamp, the tension rod being fixed together with the clamp by bolts.

[0013] The usage method includes the following steps: a. Yarn installation steps: Manually inspect the twisting direction of the yarn, then connect one end of the yarn between the first pressure plate and the second pressure plate respectively, then pass it through the carding rod ring structure, and fix the other end of the yarn to the clamp. Next, adjust the tension of the yarn, connect one end of the yarn to the tension rod, and the tension rod controls the tension of the yarn. b. Parameter adjustment / test parameters: The speed of the detector is manually input. As the detector starts to rotate, the main shaft rotates. During the rotation of the main shaft, multiple lifting blocks are driven to extend into the inner ring of the docking gear, causing the docking gear to rotate, which in turn causes the ratchet to rotate, generating a detwisting effect on the yarn. The detector records the number of twists in real time until the yarn detwisting is completed. c. Automatic Correction During Shutdown: When the detector stops, the lifting block loses centrifugal force and returns to its origin. The ratchet and pawl are in contact, allowing the ratchet to brake quickly. During this process, the ratchet immediately and more accurately records the number of turns, while the motor is activated, driving the reciprocating screw to rotate, causing the combing bar to move between the chuck and the fixed plate. At the same time, the electromagnet is energized, causing the shifting plate to separate the pawl and ratchet; the second cylinder drives the transmission gear and the mating gear to mesh. d. Cyclic Recording Mode: During the reciprocating movement of the carding rod, the outer side of the carding rod is connected to a pipe to create negative pressure on the carding rod, which attracts the individual strands of the untwisted yarn. First, the first cylinder drives the separating rod to separate the yarn, and then the distribution plate combs the individual strands. The manual reading is then recorded. If the yarn is not completely untwisted during the movement of the carding rod, the untwisted yarn is automatically powered during the combing process of the carding rod, so that the yarn rotates automatically to correct the untwisting. e. Terminal counting: After the yarn rotates twice, it drives the ratchet and the docking gear to rotate on the ring disc. The docking gear drives the transmission gear to rotate, which in turn drives the replica screw to move on it. The distance the replica screw moves on the replica screw and the number of rotations are recorded, thus accurately recording the yarn twist parameters.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, when the detector is rotating, the main shaft is driven to rotate. The main shaft generates centrifugal force to throw the lifting block out, causing the lifting block to contact the inner ring of the docking gear. This causes the docking gear to drive the fixed plug to rotate, thereby causing the ratchet to rotate. After the yarn untwisting is completed, the detector stops, the main shaft stops, and the lifting block resets. This causes the docking gear and ratchet to have a braking effect, thereby putting the ratchet in a suspended and rotatable state. This allows the yarn to be automatically corrected again, and then the untwisting effect is produced, improving the test results. 2. In this invention, the system automatically drives the second cylinder to move the sliding blade, causing the transmission gear to move linearly on the slide rod. When the transmission gear and the docking gear mesh, if the yarn untwisting is complete, the docking gear will not change its angle. If the untwisting is incomplete, the docking gear will rotate, causing the transmission gear to rotate and the rotating ring to move on the replica screw. This allows personnel to record more accurate values ​​and improves the reading effect of twist parameters. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the comb bar structure of the present invention; Figure 3 For the present invention Figure 1 Enlarged structural diagram at point A; Figure 4 This is a schematic diagram of the ratchet and spindle structure of the present invention; Figure 5 This is a schematic diagram of the ratchet and spindle structure from another perspective of the present invention; Figure 6 This is a schematic diagram of the disassembled ratchet and spindle structure of the present invention; Figure 7 This is a schematic diagram of the ratchet structure of the present invention.

[0016] In the diagram: 1-Base plate; 2-Detector; 3-Scale; 4-Reciprocating lead screw; 5-Connecting bridge; 6-Motor; 7-Tension gauge; 8-Clamp; 9-Tension rod; 10-Comb rod; 11-Distance sensor; 12-Fixing plate; 13-First cylinder; 14-Air ring; 15-Negative pressure hole; 16-Protrusion; 17-Distribution plate; 18-Separation rod; 19-Fixing rod; 20-Suspension plate; 21-Fixing guide ring; 22-First pressure plate; 23-Second pressure plate; 24-Ratchet; 25-Electromagnet; 26-Ring disc; 27-Main shaft; 28-Shifting disc; 29-Lifting block; 30-First spring; 31-Matching gear; 32-Slide rod; 33-Second cylinder; 34-Transmission gear; 35-Replica lead screw; 36-Rotating ring; 37-Second spring; 38-Pawl; 39-Stop block. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see the appendix Figure 1-7This invention provides a specific technical solution: a yarn twist detection and self-calibration mechanism, comprising a base plate 1, a detector 2 fixedly connected to one end of the top of the base plate 1, a connecting bridge 5 fixedly connected to the other end of the top of the base plate 1, a scale 3 fixedly connected between the detector 2 and the connecting bridge 5, a chuck 8 slidably connected to the scale 3, a fixed plate 12 fixedly mounted on one side of the detector 2, a main shaft 27 fixedly mounted on the detector 2, multiple fixed rods 19 fixedly connected to the fixed plate 12, fixed guide rings 21 fixedly connected between the multiple fixed rods 19, and an annular disc 26 fixedly connected to one side of the fixed guide ring 21. The inner ring of the 26 is rotatably connected to a mating gear 31. A ratchet 24 is fixedly connected to one side of the mating gear 31. A fixing plug is fixedly installed on the inner ring of the ratchet 24. A second pressure plate 23 is hinged to one side of the fixing plug. A first pressure plate 22 is hinged to the fixing plug near the second pressure plate 23. Multiple first springs 30 are fixedly connected to one end of the main shaft 27. A lifting block 29 is fixedly connected to one end of each first spring 30. The lifting blocks 29 extend to the inner ring of the mating gear 31 after the main shaft 27 rotates. First, the twisting direction of the yarn is manually inspected. Then, a section of yarn is cut so that the length of the yarn corresponds to the scale 3. Then, it is divided. Do not connect one end of the yarn between the first pressure plate 22 and the second pressure plate 23. The first pressure plate 22 and the second pressure plate 23 are tightened together with screws. Then, the yarn passes through the annular structure of the carding rod 10. Next, adjust the yarn tension. One end of the yarn is connected to the tension rod 9, which controls the yarn tension. The other end of the yarn is fixed to the clamp 8, which also has a threaded tightening structure. Finally, the clamp 8 and the scale 3 are tightened with screws. Then, input numerical parameters into the detector 2 to control the speed of the built-in motor of the detector 2. Then, turn on the detector 2 and start it to rotate. When the detector 2... During rotation, the drive spindle 27 rotates, generating centrifugal force that throws the lifting block 29 out, causing it to contact the inner ring of the mating gear 31. This causes the mating gear 31 to drive the fixed plug to rotate, thereby causing the ratchet 24 to rotate. After the yarn untwisting is complete, the detector 2 stops, the spindle 27 stops, and the lifting block 29 resets, creating a braking effect on the mating gear 31 and the ratchet 24. This puts the ratchet 24 in a suspended and rotatable state, allowing the yarn to automatically correct its position again, thus producing an untwisting effect and improving the test results. The specific implementation method is described in detail below: Furthermore, a slide rod 32 is rotatably connected to the bottom of the fixed disk 12, and a slidable blade is slidably connected to the slide rod 32. A second cylinder 33 is fixedly connected to the slid rod and the fixed disk 12. A transmission gear 34 is rotatably connected to the slid rod, and the transmission gear 34 is keyed to the slide rod 32. A replica screw 35 is fixedly connected to one end of the slide rod 32, and a rotating ring 36 is sleeved on the replica screw 35. The transmission gear 34 and the mating gear 31 mesh together. The replica screw 35 has certain scale lines, and the radius ratio of the mating gear 31 to the transmission gear 34 is 4:1, which directly causes the transmission gear 34 to mesh. The number of turns is four times that of the docking gear 31. Therefore, after the yarn rotates twice, it drives the ratchet 24 and the docking gear 31 to rotate on the ring disk 26. This causes the docking gear 31 to drive the transmission gear 34 to rotate, which in turn drives the replica screw 35 to rotate and move the rotating ring 36 on it. The distance the rotating ring 36 moves on the replica screw 35 is recorded, and the number of turns of the transmission gear 34 is recorded. Then, the number of turns of the transmission gear 34 is multiplied by four to accurately record the number of turns of the second untwisting of the docking gear 31. This improves the device's ability to accurately record the yarn's twist parameters.

[0019] Furthermore, multiple electromagnets 25 are fixedly installed on the other side of the fixed guide ring 21. The electromagnets 25 are fixedly connected to the fixed rod 19. A suspension plate 20 is fixedly installed on the same end of the multiple fixed rods 19. The suspension plate 20 is slidably connected to the ratchet 24. A shifting plate 28 is slidably connected to the multiple fixed rods 19. Multiple iron plates are provided on one side of the shifting plate 28. The iron plates are slidably connected to the fixed rods 19. Multiple pawls 38 are rotatably connected to the inner ring of the shifting plate 28. The pawls 38 are engaged with the ratchet 24. Each pawl 38 is fixedly connected to the shifting plate 28 by a second... Spring 37 and the inner ring of shifting disk 28 are each fixedly installed with a stop block 39 near each pawl 38. When the detector 2 stops, the lifting block 29 loses centrifugal force and returns to the origin. Therefore, the ratchet 24 can still rotate a certain angle due to inertia. As the ratchet 24 and the pawl 38 are in constant contact, the second spring 37 can be compressed, so that the ratchet 24 can be braked quickly. The rotation angle of the ratchet 24 can be controlled to the maximum extent. During this process, the ratchet 24 immediately records the number of turns more accurately, and the display screen accurately records the number of turns.

[0020] Furthermore, a motor 6 is fixedly installed on one side of the connecting bridge 5. A reciprocating lead screw 4 is sleeved on the output shaft of the motor 6. One end of the reciprocating lead screw 4 is connected to the detector 2. A carding rod 10 is threaded onto the reciprocating lead screw 4. One end of the carding rod 10 extends upwards towards the scale 3, thus forming a ring structure for placing yarn. The bottom of the carding rod 10 abuts against the base plate 1. Sealing rings are fixedly installed on both sides of the inner ring at one end of the carding rod 10. An air ring 14 is fixedly connected between the two sealing rings. The air ring 14 has multiple negative pressure holes 15 for adsorbing multiple strands of yarn. A pipe connection is provided on one side of the carding rod 10. The inner ring of the air ring 14 has multiple protrusions 16 fixedly installed, and each protrusion 16 is fixedly connected to a distribution plate 17. An air pressure channel is formed between two adjacent distribution plates 17, and the air pressure channel corresponds to each negative pressure hole 15. During the shutdown of the detector 2, the motor 6 is activated, driving the reciprocating screw 4 to rotate, so that the combing rod 10 moves between the chuck 8 and the fixed plate 12. At the same time, the electromagnet 25 is energized, so that the shifting plate 28 drives the pawl 38 and the ratchet 24 to separate, so that the docking gear 31 and the ring plate 26 are always connected, thereby suspending the ratchet 24. During this process, the system automatically drives the second cylinder 33 to move the sliding blade, causing the transmission gear 34 to move linearly on the slide bar 32. When the transmission gear 34 and the docking gear 31 mesh, if the yarn untwisting is complete, the docking gear 31 will not change its angle. If the untwisting is incomplete, the docking gear 31 will rotate, causing the transmission gear 34 to rotate, which in turn causes the rotating ring 36 to move on the replica screw 35. This allows personnel to record more accurate values ​​and improves the reading effect of twist parameters.

[0021] Furthermore, a first cylinder 13 is fixedly connected to the outer side of one end of the carding rod 10. The first cylinder 13 extends into the inside of the carding rod 10. A separating rod 18 is fixedly installed at one end of the first cylinder 13. The separating rod 18 is perpendicular to the axis of the annular structure at one end of the carding rod 10. A distance sensor 11 is fixedly installed at the bend of the carding rod 10. A pipe is connected to the outer side of the carding rod 10 to create negative pressure, which attracts the individual strands of the untwisted yarn. First, the separating rod 18 is driven by the first cylinder 13 to separate the yarn, and then the individual strands are carded by the distribution plate 17. The reading is taken manually. If the reading is taken during carding... If the yarn is not completely untwisted when the guide rod 10 moves, the guide rod 10 will automatically provide power to the untwisted yarn during the yarn combing process, causing the yarn to rotate automatically for untwisting correction. The distance sensor 11 can record parameters when the guide rod 10 is about to contact the detector 2. When the guide rod 10 causes the yarn to rotate, the distance sensor 11 records a value, so that when the same type of yarn is tested again or several times, the manual input of a sufficient number of turns into the detector 2, thus facilitating the one-time twist test of the same type of yarn.

[0022] A tension gauge 7 is fixedly installed on one side of the clamp 8, and a tension rod 9 is hinged to the other side of the clamp 8. The tension rod 9 is fixed together with the clamp 8 by bolts. The tension gauge 7 makes it convenient for the tension rod 9 to select different tensions for testing, which is more conducive to untwisting different types of yarn.

[0023] The usage method includes the following steps: a. Yarn installation steps: Manually inspect the twisting direction of the yarn, then connect one end of the yarn between the first pressure plate 22 and the second pressure plate 23 respectively, then pass it through the ring structure of the combing rod 10, and fix the other end of the yarn to the clamp 8. Next, adjust the tension of the yarn, connect one end of the yarn to the tension rod 9, and the tension rod 9 controls the tension of the yarn. b. Parameter adjustment / test parameters: The rotation speed of the detector 2 is manually input. As the detector 2 starts to rotate, the main shaft 27 rotates. During the rotation of the main shaft 27, multiple lifting blocks 29 are driven to extend into the inner ring of the docking gear 31, causing the docking gear 31 to rotate, which in turn causes the ratchet 24 to rotate, generating a detwisting effect on the yarn. The detector 2 records the number of twists in real time until the yarn detwisting is completed. c. Automatic Correction During Shutdown: When the detector 2 stops, the lifting block 29 loses centrifugal force and returns to its origin. The ratchet 24 and pawl 38 are in contact, and the ratchet 24 can brake quickly. During this process, the ratchet 24 immediately records the number of twists more accurately, while the motor 6 is activated, driving the reciprocating screw 4 to rotate, allowing the combing bar 10 to move between the chuck 8 and the fixed plate 12. At the same time, the electromagnet 25 is energized, causing the shifting plate 28 to drive the pawl 38 and the ratchet 24 to separate; the second cylinder 33 drives the transmission gear 34 and the mating gear 31 to form a meshing effect. d. Cyclic Recording Mode: During the movement of the carding rod 10 and the reciprocating screw 4, the outer side of the carding rod 10 is connected to the pipe to create negative pressure on the carding rod 10, which attracts the individual strands of the untwisted yarn. First, the first cylinder 13 drives the separating rod 18 to separate the yarn, and then the distribution plate 17 combs the individual strands, allowing manual reading. If the yarn is not completely untwisted during the movement of the carding rod 10, the carding rod 10 automatically provides power to the untwisted yarn during the combing process, causing the yarn to rotate automatically for untwisting correction. e. Terminal counting: After the yarn rotates twice, it drives the ratchet 24 and the docking gear 31 to rotate on the ring disk 26. This causes the docking gear 31 to drive the transmission gear 34 to rotate, which in turn causes the replica screw 35 to rotate and drive the rotating ring 36 to move on it. The distance and number of rotations of the rotating ring 36 on the replica screw 35 are recorded, thus accurately recording the twist parameters of the yarn.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A self-calibrating mechanism for detecting yarn twist, comprising a base plate (1), characterized in that: A detector (2) is fixedly connected to one end of the top of the base plate (1), and a connecting bridge (5) is fixedly connected to the other end of the top of the base plate (1). A scale (3) is fixedly connected between the detector (2) and the connecting bridge (5). A chuck (8) is slidably connected to the scale (3). A fixed plate (12) is fixedly installed on one side of the detector (2). A spindle (27) is fixedly installed on the detector (2). Multiple fixed rods (19) are fixedly connected to the fixed plate (12). A fixed guide ring (21) is fixedly connected between each of the fixed rods (19). A ring-shaped disk (26) is fixedly connected to one side of the fixed guide ring (21). A mating gear (31) is rotatably connected to the inner ring of the ring-shaped disk (26). A ratchet (24) is fixedly connected to one side of the mating gear (31). A fixed plug is fixedly installed on the inner ring of the ratchet (24). A second pressure plate (23) is hinged to one side of the fixed plug. A first pressure plate (22) is hinged to the fixed plug near the second pressure plate (23). One end of the main shaft (27) is fixedly connected to a plurality of first springs (30), and one end of each first spring (30) is fixedly connected to a lifting block (29). The lifting blocks (29) extend to the inner ring of the mating gear (31) after the main shaft (27) rotates.

2. The yarn twist detection self-calibration mechanism according to claim 1, characterized in that: The bottom of the fixed disk (12) is rotatably connected to a slide rod (32), a slidable blade is slidably connected to the slide rod (32), a second cylinder (33) is fixedly connected between the slid and the fixed disk (12), a transmission gear (34) is rotatably connected to the slid, the transmission gear (34) and the slide rod (32) are keyed together, a replica screw (35) is fixedly connected to one end of the slide rod (32), a swivel ring (36) is sleeved on the replica screw (35), and the transmission gear (34) and the mating gear (31) mesh together.

3. The yarn twist detection self-calibration mechanism according to claim 2, characterized in that: Multiple electromagnets (25) are fixedly installed on the other side of the fixed guide ring (21). The electromagnets (25) are fixedly connected to the fixed rods (19). A suspension plate (20) is fixedly installed on the same end of the multiple fixed rods (19). The suspension plate (20) is slidably connected to the ratchet (24). A shifting plate (28) is slidably connected on the multiple fixed rods (19). Multiple iron plates are provided on one side of the shifting plate (28). The iron plates are slidably connected to the fixed rods (19).

4. The yarn twist detection self-correction mechanism according to claim 3, characterized in that: The inner ring of the shifting disk (28) is rotatably connected to a plurality of pawls (38), the pawls (38) and the ratchet (24) mesh together, and each pawl (38) is fixedly connected to the shifting disk (28) with a second spring (37), and a stop block (39) is fixedly installed on the inner ring of the shifting disk (28) near each pawl (38).

5. The yarn twist detection self-calibration mechanism according to claim 1, characterized in that: A motor (6) is fixedly installed on one side of the connecting bridge (5). A reciprocating screw (4) is sleeved on the output shaft of the motor (6). One end of the reciprocating screw (4) is connected to the detector (2). A combing rod (10) is threaded onto the reciprocating screw (4). One end of the combing rod (10) extends upwards towards the scale (3), thereby forming a ring structure for placing yarn.

6. The yarn twist detection self-calibration mechanism according to claim 5, characterized in that: The bottom of the combing rod (10) abuts against the base plate (1). Both sides of the inner ring of one end of the combing rod (10) are fixedly installed with sealing rings. An air ring (14) is fixedly connected between the two sealing rings. Multiple negative pressure holes (15) for adsorbing multi-strand yarns are opened on the air ring (14). A pipe interface is provided on one side of the combing rod (10).

7. The yarn twist detection self-calibration mechanism according to claim 6, characterized in that: The inner ring of the gas ring (14) is fixedly installed with a plurality of protrusions (16), and each of the protrusions (16) is fixedly connected with a distribution plate (17). An air pressure channel is formed between two adjacent distribution plates (17), and the air pressure channel corresponds to each negative pressure hole (15).

8. The yarn twist detection self-calibration mechanism according to claim 7, characterized in that: A first cylinder (13) is fixedly connected to the outer side of one end of the combing rod (10). The first cylinder (13) extends into the combing rod (10). A separating rod (18) is fixedly installed at one end of the first cylinder (13). The axis of the separating rod (18) and the annular structure at one end of the combing rod (10) are perpendicular. A distance sensor (11) is fixedly installed at the bend of the combing rod (10).

9. The yarn twist detection self-calibration mechanism according to claim 1, characterized in that: A tension gauge (7) is fixedly installed on one side of the clamp (8), and a tension rod (9) is hinged to one side of the clamp (8). The tension rod (9) is fixed together with the clamp (8) by bolts.

10. The method of using the yarn twist detection self-calibration mechanism according to any one of claims 1-9, characterized in that: Includes the following steps: a. Yarn installation steps: By manually inspecting the twisting direction of the yarn, one end of the yarn is connected between the first pressure plate (22) and the second pressure plate (23), and then passed through the ring structure of the combing rod (10). The other end of the yarn is fixed on the clamp (8). Then the tension of the yarn is adjusted. One end of the yarn is connected to the tension rod (9), and the tension rod (9) controls the tension of the yarn. b. Parameter adjustment / test parameters: By manually inputting the rotation speed of the detector (2), the detector (2) starts to rotate, causing the main shaft (27) to rotate. During the rotation of the main shaft (27), multiple lifting blocks (29) are driven to extend into the inner ring of the docking gear (31), causing the docking gear (31) to rotate, causing the ratchet (24) to rotate, generating a detwisting effect on the yarn. The detector (2) records the number of twists in real time until the yarn detwisting is completed. c. Automatic correction upon shutdown: When the detector (2) stops, the lifting block (29) loses centrifugal force and returns to its origin. The ratchet (24) and pawl (38) are in contact, and the ratchet (24) can brake quickly. During this process, the ratchet (24) immediately records the number of twists more accurately, and the motor (6) is activated, driving the reciprocating screw (4) to rotate, allowing the combing rod (10) to move between the chuck (8) and the fixed plate (12). At the same time, the electromagnet (25) is energized, allowing the shifting plate (28) to drive the pawl (38) and ratchet (24) to separate. The second cylinder (33) drives the transmission gear (34) and the mating gear (31) to form a meshing effect. d. Cyclic recording mode: During the movement of the carding rod (10) and the reciprocating screw (4), the outer side of the carding rod (10) is connected to the pipe to form a negative pressure, which attracts the single strands of the untwisted yarn. First, the first cylinder (13) drives the separating rod (18) to separate the yarn, and then the distribution plate (17) combs the single strands, allowing manual reading. If the yarn is not completely untwisted during the movement of the carding rod (10), the untwisted yarn is automatically powered during the combing process of the carding rod (10), so that the yarn rotates automatically to perform untwisting correction. e. Terminal counting: After the yarn rotates twice, it drives the ratchet (24) and the docking gear (31) to rotate on the ring disk (26), so that the docking gear (31) drives the transmission gear (34) to rotate, and the replica screw (35) rotates and drives the rotating ring (36) to move on it, thereby recording the distance the rotating ring (36) moves on the replica screw (35) and the number of turns, thus accurately recording the twist parameters of the yarn.

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