A flexible rapier loom let-off drive

Abstract

The application discloses a flexible rapier loom let-off transmission mechanism, which comprises a slope frame, the inner wall of the slope frame is provided with a plurality of detection rollers through a detection assembly, so that when the warp yarn is changed from a tight state to a relaxed state on the detection rollers, a relaxed signal is detected, a slide frame which is slidably connected on the two sides of the slope frame is triggered to displace, and a feeding roller is rotatably connected to the bottom end of the rear side of the slope frame; a rack is fixedly connected to the top end of the rear side of the slope frame, and two slide cores are slidably connected to the left and right ends of the top side of the rack. The warp tension state can be monitored in real time, and the warp yarn can be immediately dynamically tightened when the warp yarn is detected to be relaxed, the feeding speed is reduced and the feeding distance is prolonged, so that the warp yarn is quickly restored to the tight state, the fabric defects caused by the warp yarn relaxation are effectively avoided, and the appearance quality and the inherent quality of the fabric are improved, the defective product rate is reduced, and the production benefit is improved.

Description

Technical Field

[0001] This invention relates to a warp feeding transmission mechanism for a rapier loom. Background Technology

[0002] Rapier looms are the most widely used shuttleless looms. In addition to the high speed, high degree of automation, and high efficiency of shuttleless looms, their active weft insertion method has strong adaptability to various types of yarns. Furthermore, rapier looms have significant advantages in multi-color weft weaving, and can produce yarn-dyed products with up to 16 colors of weft yarn. As shuttleless looms replace shuttle looms, rapier looms will become the main type of machine for producing woven fabrics.

[0003] In existing rapier looms, the warp feed mechanism, during the weft insertion and beat-up operations, repeatedly moves the warp threads, causing tension differences between the interlaced warp threads. This leads to variations in warp thread tension and abnormal tension, making it highly susceptible to accidents during weft interlacing due to loose warp threads, resulting in a decline in fabric quality. Therefore, a flexible warp feed mechanism for rapier looms is needed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a flexible rapier loom warp feed transmission mechanism. This mechanism solves the problem that after the warp threads are repeatedly moved, the tension of the interlaced warp threads varies, causing changes in the warp thread tension and abnormal tension. This can easily lead to accidents during interlacing of loose warp threads, resulting in a decline in fabric quality.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A flexible rapier loom warp feed transmission mechanism includes:

[0007] The inclined frame has multiple detection rollers installed on its inner wall via a detection assembly. When the warp yarn changes from a taut to a slack state on the detection rollers, a slack signal is detected, triggering the slides on both sides of the inclined frame to move. A feed roller is rotatably connected to the bottom rear side of the inclined frame.

[0008] The frame is fixedly connected to the top of the rear end of the inclined frame. Two sliding cores are slidably connected to the left and right ends of the top side of the frame, and the two adjacent sliding cores are in a mirror tilt state. Tensioning rollers are rotatably connected to the adjacent side of the sliding cores at both ends and the rear side of the frame. The sliding cores are displaced by a lifting assembly. The lifting assembly is triggered by a one-way ratchet to lift the frame by a rack that slides horizontally on both sides of the front end of the frame. Lifting members are slidably connected to the bottom ends of the left and right sides of the frame. The lifting assembly is connected to the lifting members so as to reset when the lifting members rise. The racks are displaced by a pushing assembly triggered by the slide.

[0009] The feeding rack is fixedly connected to the middle of the rear side of the frame, and two wire feeding rollers are rotatably connected to the inner wall. One side of one of the wire feeding rollers is connected to a gearbox via a synchronous pulley and synchronous belt. The gearbox is driven by a motor to transmit power to one of the wire feeding rollers for feeding. The two racks are controlled by a pull frame fixedly connected to their adjacent sides to slow down the feeding speed of one of the wire feeding rollers when the warp yarn changes from a taut state to a slack state, until the warp yarn returns to a taut state.

[0010] The jet frame is used to heat treat the warp on the bottom side of the outlet by the input steam, so that the warp can be relieved of stress after heat treatment and is easier to be in a taut state. The other side of one of the feed rollers is connected to a sliding component via a belt pulley, so that the jet frame can be moved to perform heat treatment, avoiding local overheating and damage to the warp.

[0011] Preferably, the detection assembly includes multiple rotating seats that are equidistantly fixed to both sides of the inner wall of the inclined frame. The interior of each rotating seat is connected to a torsion shaft via a spring. A rotating frame is fixedly connected to one side of the torsion shaft. Both ends of the rotating frame are rotatably connected to the detection roller. A guide roller is fixedly connected to the other side of the torsion shaft. A guide groove is formed on the outer wall of the guide roller. A transmission head is fixedly connected to the top side of the slide, and the top end of the transmission head is disposed inside the guide groove.

[0012] Preferably, the lifting assembly includes two turntables, which are mirror-symmetrical. The center of one side of each turntable is rotatably connected to the frame via a torsion spring. Guide frames slide vertically at the middle of both sides of the frame, and both ends of the guide frames are sleeved on the protrusions of the sliding core. A connecting rod is rotatably connected to the outer periphery of one side of each turntable, and the top end of the connecting rod is rotatably connected to the middle end of the guide frame. A limiting wheel is fixedly connected to the other side of the turntable. A limiting groove is formed on the outer periphery of the limiting wheel, and a limiting head abuts inside the limiting groove. The limiting head is rotatably connected to the frame via a torsion spring, and the bottom side of the limiting head abuts against the top side of the lifting member.

[0013] Preferably, the one-way ratchet includes an inner shaft fixedly connected to the middle of one side of the limiting wheel and a toothed ring fixedly connected to the outer periphery of one side of the limiting wheel. The outer periphery of the inner shaft is rotatably connected to a pawl by a torsion spring, and the inner periphery of the toothed ring is provided with ratchet teeth. The pawl and the ratchet teeth mesh with each other.

[0014] Preferably, the pushing assembly includes cylindrical bodies fixedly connected to both ends of the front side of the frame, the two cylindrical bodies being mirror-symmetrical, an air exchange chamber being provided on the bottom side of the cylindrical body, a piston shaft being slidably connected inside the cylindrical body, the rear side of the piston shaft being fixedly connected to a rack, the interior of the cylindrical body being divided into a pushing chamber and a retraction chamber by the piston shaft, a pressurizing chamber, an exhaust chamber and a pressure relief chamber being sequentially opened at the top of the interior of the air exchange chamber, an air exchange valve being slidably connected to the bottom of the interior of the air exchange chamber, one end of the air exchange valve being fixedly connected to the slide, the pressurizing chamber being connected to the pushing chamber through a pipe, and the pressure relief chamber being connected to the retraction chamber through a pipe.

[0015] Preferably, the gearbox includes a mounting frame fixedly connected to the bottom side of the frame. Inside the mounting frame, there are two gear 1 and two gear 2 that rotate. Gear 1 and gear 2 mesh with each other, and the sizes of gear 1 and gear 2 are different. The positions of the two gear 1 and the two gear 2 are obliquely symmetrical. A drive shaft is fixedly connected to the adjacent side of one gear 1 and one gear 2. One end of the drive shaft is driven by a motor. A movable shaft is fitted inside the inner wall of the other gear 1 and the other gear 2. The middle end of the movable shaft is connected by a meshing mechanism. The concentric disc is connected to another gear one and another gear two. One end of the movable shaft is rotatably connected to a displacement frame. The top end of the displacement frame is slidably connected to the outer wall of the mounting frame. The bottom end of the pulling frame is slidably connected to the outer wall of the mounting frame. A connecting rod two is provided on the top side of the mounting frame. One end of the connecting rod two is rotatably connected to the pulling frame. The other end of the connecting rod two is rotatably connected to the displacement frame. The other end of the movable shaft is connected to a rotating sleeve through a spline shaft and spline groove. The rotating sleeve is rotatably connected to the outer wall of the mounting frame. The mounting frame is connected to one side of one of the wire feeding rollers through a synchronous pulley and synchronous belt.

[0016] Preferably, the engagement disc includes an engagement shaft fixedly connected to the middle end of the movable shaft, and engagement plates are fixedly connected to the adjacent sides of the other gear one and the other gear two, and the engagement shaft engages with one of the engagement plates.

[0017] Preferably, the sliding assembly includes a reciprocating screw rotatably connected to one side of the feeder and a slide rod fixedly connected to the other side of the feeder. The rear end of the reciprocating screw is connected to the other side of one of the wire feed rollers via two meshing bevel gears and belt pulleys. One end of the air jet frame is sleeved on the outer wall of the reciprocating screw, and the other end of the air jet frame is slidably connected to the outer wall of the slide rod.

[0018] Preferably, an abutment head is fixedly connected to the top side of the jet frame, and an abutment frame is fixedly connected to the bottom side of the two lifting members.

[0019] Preferably, a jet pipe is fixedly connected to one side of the two cylinders, a spray head is installed on the outer wall of the jet pipe, the jet pipe is connected to the retraction chamber, and a steam supply pipe is externally connected to the bottom input end of the air exchange valve and the input end of the jet frame.

[0020] Working principle: When the warp drive mechanism feeds the warp, the front end of the warp is pulled by the take-up roller of the loom, and the rear end of the warp is sequentially wound around the detection roller, tension roller, and feed roller to achieve a taut state. The taut warp applies force to the adjacent set of detection rollers, causing the two adjacent detection rollers to experience opposite forces. This, in turn, causes the rotating frame and torsion shaft connected to the detection rollers to torsion the spring, bringing the torsion shaft and the connected rotating frame and guide roller to an initial equilibrium state, i.e., the warp is taut. At this time, the motor drives... The drive shaft rotates, causing two sets of meshing gears (gear one and gear two) to rotate. This causes the meshing plates, which are engaged with the meshing shaft, to transmit rotational power to the movable shaft. The movable shaft then rotates via the splined shaft and splined groove, and in turn, via the synchronous pulley and synchronous belt, drives the feed roller to rotate. This ensures the feed roller's speed matches the loom's take-up roller speed, maintaining a balanced state at both ends of the warp yarn during feeding, achieving tension. When the warp yarn becomes slack due to external forces, the slack is dynamically adjusted. The specific steps are as follows:

[0021] When the warp threads lose tension, they lose the force applied to the detection roller. This causes the detection roller, along with its connected structure including the torsion shaft, to rotate due to the resetting action of the compressed rotating seat. This causes the connected guide roller to rotate, resulting in the guide grooves on the surface of the guide roller shifting. This shifts the transmission head and the slide connected to multiple transmission heads, causing the slide to move. Consequently, the slide moves the ventilation valve, opening the exhaust chamber and the pressure relief chamber. The steam entering from the input end of the ventilation valve flows through the pressurization chamber and pipe into the propulsion chamber inside the cylinder. This causes the piston shaft to move due to the steam, which in turn moves the rack connected to it.

[0022] The rack and pinion meshes with the gear ring and rotates clockwise, causing the ratchet teeth on its inner circumference to engage the pawl. The pawl generates a backward force, which is limited by the inner shaft. This backward force then applies a synchronous force to the inner shaft, causing it to drive the connected limit wheel and turntable to rotate clockwise. When the limit wheel rotates clockwise, it applies a force to the limit head through the limit groove on its outer circumference, causing the limit head to lift. The limit head then returns to its original position through the torsion spring compressed by its rotation. The rotating turntable compresses the connected spring spring and simultaneously drives the first connecting rod, which in turn drives the eccentric wheel connecting rod to push the guide frame, applying a force to the protrusion of the slide core, causing the slide core to rotate. The two tensioning rollers connected to it are displaced, increasing the distance between them and the height, thereby extending the distance the warp needs to travel at this point and simultaneously applying force to the warp, thus tightening it. At this time, the turntable is compressed by the spring, causing it to reverse. When the turntable reverses, the limiting wheel connected to it will be locked in the limiting groove by the limiting head and prevented from rotating by the lifting part on the bottom side of the limiting head. This prevents the limiting wheel and the turntable from reversing, allowing the sliding core and the two tensioning rollers connected to it to temporarily remain in their original positions.

[0023] The two displaced racks drive the connected pull frame to move, which in turn causes the pull frame to pull the connected link two, which in turn causes the link two to pull the displacement frame connected to the movable shaft, which in turn causes the displacement frame to pull the movable shaft to move, causing the movable shaft to disengage from the standard speed gear at this time, and then engage another engagement piece, causing another set of meshing gears one and two to drive the movable shaft, which in turn causes the speed transmitted by the movable shaft to the feed roller to decrease, so as to create a speed difference with the take-up roller of the loom;

[0024] With the coordination of the above two processes, the warp yarn dynamically adjusts its tension in a timely manner and applies force to the detection roller, thereby resetting the slide. At the same time, the air exchange valve is pulled to reset, connecting the pressurization chamber and the exhaust chamber. The steam entering the air exchange chamber enters the retraction chamber through the pressure relief chamber and the pipe, and the steam in the cylinder propulsion chamber is discharged, causing the piston shaft to reset. The displacement rack is pulled back to reset and engages the toothed ring in the opposite direction. The toothed ring reverses and engages the pawl through the ratchet, causing the pawl to tilt towards the groove on the inner shaft and pull the torsion spring connected to it. The compressed torsion spring resets the toothed ring, allowing it to rotate freely without affecting the inner shaft. The pull frame connected to the rack is displaced and reset, thereby restoring the rotation speed of the wire feed roller. The steam entering the retraction chamber will also perform small-scale heat treatment on the warp yarn in this area through the jet pipe connected to the cylinder.

[0025] One of the wire feeding rollers is driven by a reciprocating screw that rotates through a belt pulley and two meshing bevel gears. When the transmission jet frame moves back and forth, the warp is heat-treated with steam. This displacement causes the top contact head to indirectly abut against the contact frame connected to the lifting member, thereby causing the lifting member to move upward and lift the limiting head. This temporarily releases the limiting head from the limiting wheel, and then re-limits it, giving the limiting wheel a temporary tendency to reverse. This causes the turntable connected to it to reverse, and the transmission linkage pulls back, gradually resetting the sliding core and its connected tensioning roller. This gradually releases the dynamic tension of the warp and returns it to a normal tension state, preventing the transient contact tension compensation from loosening again.

[0026] The advantages of the invention compared to existing technologies are:

[0027] 1. This invention can monitor the warp tension in real time and immediately tighten it dynamically when warp slack is detected. By slowing down the feeding and extending the feeding distance, the warp can be quickly restored to tension, effectively avoiding fabric defects caused by warp slack, thereby improving the appearance and internal quality of the fabric, reducing the defect rate, and increasing production efficiency.

[0028] 2. This invention can gradually release the dynamic tension of the warp yarn after it has been subjected to maximum tension treatment, and return it to a normal tension state, preventing the relaxation phenomenon from reappearing after the transient contact tension compensation, thereby maintaining the warp feeding stability of the loom.

[0029] 3. This invention can heat-treat the warp threads, eliminating internal stress under heat and making it easier to maintain tension. It can also heat the warp threads evenly, avoiding damage caused by local overheating and further optimizing the physical properties of the fabric. Attached Figure Description

[0030] Figure 1 This is a perspective view of the present invention.

[0031] Figure 2 This is a schematic diagram showing the position of the feed roller of the present invention.

[0032] Figure 3 This is a schematic diagram of the detection roller of the present invention.

[0033] Figure 4 This is a schematic diagram of the torsion shaft of the present invention.

[0034] Figure 5 This is a schematic diagram of the frame structure of the present invention.

[0035] Figure 6 This is a schematic diagram of the connection structure of the first connecting rod of the present invention.

[0036] Figure 7 This is a schematic diagram of the turntable structure of the present invention.

[0037] Figure 8 This is a schematic diagram of the connection structure between the rack and piston shaft of the present invention.

[0038] Figure 9 This is a schematic diagram of the internal structure of the cylinder and ventilation chamber of the present invention.

[0039] Figure 10 This is a schematic diagram showing the position of the jet pipe of the present invention.

[0040] Figure 11 This is a schematic diagram of the reciprocating lead screw of the present invention.

[0041] Figure 12 This is a schematic diagram of the jet frame of the present invention.

[0042] Figure 13 This is a schematic diagram showing the positions of the contact head and the contact frame of the present invention.

[0043] Figure 14 This is a schematic diagram showing the position of the mounting frame of the present invention.

[0044] Figure 15 This is a schematic diagram of the mounting frame of the present invention.

[0045] Figure 16 This is a schematic diagram of the structure of the power shaft and the movable shaft of the present invention.

[0046] The components are as follows: 1. Frame; 2. Inclined frame; 3. Feeding frame; 4. Detection roller; 5. Rotating frame; 6. Rotary seat; 7. Torsion shaft; 8. Guide roller; 9. Transmission head; 10. Slide; 11. Tensioning roller; 12. Sliding core; 13. Guide frame; 14. Connecting rod one; 15. Turntable; 16. Limiting wheel; 17. Limiting head; 18. Lifting component; 19. Inner shaft; 20. Gear ring; 21. Pawl; 22. Rack. 23. Cylinder; 24. Piston shaft; 25. Air exchange chamber; 26. Air exchange valve; 27. Jet pipe; 28. Feed roller; 29. ​​Reciprocating screw; 30. Slide rod; 31. Jet frame; 32. Contact head; 33. Contact frame; 34. Mounting frame; 35. Pulling frame; 36. Movable shaft; 37. Power shaft; 38. Engaging shaft; 39. Engaging plate; 40. Rotating sleeve; 41. Connecting rod II; 42. Feed roller. Detailed Implementation

[0047] The present invention will be further described below with reference to embodiments, but these are not intended to limit the scope of the invention.

[0048] This invention provides a warp feed transmission mechanism for a flexible rapier loom, comprising:

[0049] Please see the appendix Figure 1 and attached Figure 2 The inclined frame 2 has multiple detection rollers 4 installed on its inner wall via a detection assembly. When the warp yarn changes from a taut state to a slack state on the detection rollers 4, a slack signal is detected, triggering the slide 10 slidably connected on both sides of the inclined frame 2 to move. The rear bottom end of the inclined frame 2 is rotatably connected to a feeding roller 42.

[0050] Specifically, the warp yarns are wound in a cyclic S-path on the detection roller 4, which allows the warp yarns to be taut on 4. The detection roller itself is made of a lightweight material, such as carbon fiber, which makes it lightweight and allows for sufficient stress when subjected to force. When continuously subjected to the force of the taut warp yarns, it can reduce the rotation caused by gravity.

[0051] Please see the appendix Figure 3 and attached Figure 4 The detection assembly includes multiple rotating seats 6 that are equidistantly fixed to both sides of the inner wall of the inclined frame 2. The interior of the rotating seat 6 is connected to a torsion shaft 7 via a spring. A rotating frame 5 is fixedly connected to one side of the torsion shaft 7. Both ends of the rotating frame 5 are rotatably connected to the detection roller 4. A guide roller 8 is fixedly connected to the other side of the torsion shaft 7. A guide groove is provided on the outer wall of the guide roller 8. A transmission head 9 is fixedly connected to the top side of the slide 10. The top end of the transmission head 9 is located inside the guide groove.

[0052] Specifically, when the warp drive mechanism feeds the warp, the front end of the warp is pulled by the take-up roller of the loom, and the rear end of the warp is pulled by the detection roller 4, tension roller 11 and feed roller 28 in sequence to achieve a taut state. The taut warp applies force to the adjacent set of detection rollers 4, so that the two adjacent detection rollers 4 are subjected to opposite forces, which in turn causes the rotating frame 5 and the torsion shaft 7 connected to the detection roller 4 to twist the spring, so that the torsion shaft 7 and the rotating frame 5 and the guide roller 8 connected to it are in the initial equilibrium posture, that is, the warp is taut. When the warp is slack due to external force, the slack of the warp will be dynamically adjusted. The warp that loses its taut state will lose the force applied to the detection roller 4, so that the detection roller 4, together with the structure including the torsion shaft 7 connected to it, is reset by the compression of the rotating seat 6 and rotates, causing the guide roller 8 connected to it to rotate, causing the guide groove on the surface of the guide roller 8 to shift, and pulling the transmission head 9 and the slide 10 connected to multiple transmission heads 9 to move.

[0053] The frame 1 is fixedly connected to the top of the rear end of the inclined frame 2. Two sliding cores 12 are slidably connected to the left and right ends of the top side of the frame 1, and the two adjacent sliding cores 12 are in a mirror tilt state. Tensioning rollers 11 are rotatably connected to the side of the sliding cores 12 at both ends and the rear side of the frame 1. The sliding cores 12 are displaced by the lifting assembly. The lifting assembly is triggered by the one-way ratchet by the racks 22 that slide horizontally on both sides of the front end of the frame 1. Lifting members 18 are slidably connected to the bottom ends of the left and right sides of the frame 1. The lifting assembly is connected to the lifting members 18 so as to be reset when the lifting members 18 rise. The racks 22 are displaced by the pushing assembly triggered by the slide 10.

[0054] Please see the appendix Figure 8 - Appendix Figure 10 The propulsion assembly includes cylinders 23 fixedly connected to both ends of the front side of the frame 1. The two cylinders 23 are mirror symmetrical. An air exchange chamber 25 is provided on the bottom side of the cylinder 23. A piston shaft 24 is slidably connected inside the cylinder 23. The rear side of the piston shaft 24 is fixedly connected to the rack 22. The inside of the cylinder 23 is divided into a propulsion chamber and a retraction chamber by the piston shaft 24. A pressurization chamber, an exhaust chamber and a pressure relief chamber are sequentially opened at the top of the air exchange chamber 25. An air exchange valve 26 is slidably connected to the bottom of the air exchange chamber 25. One end of the air exchange valve 26 is fixedly connected to the slide 10. The pressurization chamber is connected to the propulsion chamber through a pipe, and the pressure relief chamber is connected to the retraction chamber through a pipe.

[0055] Specifically, after the slide 10 is displaced, it will cause the air exchange valve 26 to move, connecting the exhaust chamber and the pressure relief chamber. The steam entering from the input end of the air exchange valve 26 enters the propulsion chamber inside the cylinder 23 through the pressurization chamber and the pipe, thereby causing the piston shaft 24 to be displaced by the steam. The piston shaft 24 pushes the rack 22 connected to it to move. When the slide 10 returns to its original position, it will simultaneously pull the air exchange valve 26 to return to its original position, connecting the pressurization chamber and the exhaust chamber. The steam entering the air exchange chamber 25 enters the retraction chamber through the pressure relief chamber and the pipe, and the steam discharged from the propulsion chamber of the cylinder 23 causes the piston shaft 24 to return to its original position. The steam entering the retraction chamber will also perform small-scale heat treatment on the meridian of this area through the jet pipe 27 connected to the cylinder 23.

[0056] Please see the appendix Figure 5 - Appendix Figure 7The lifting assembly includes two turntables 15, which are mirror-symmetrical. One center of each turntable 15 is rotatably connected to the frame 1 via a torsion spring. Guide frames 13 slide vertically along the middle of both sides of the frame 1, with both ends of the guide frames 13 fitted onto the protrusions of the sliding core 12. A connecting rod 14 is rotatably connected to the outer periphery of one side of each turntable 15, with the top end of the connecting rod 14 rotatably connected to the middle end of the guide frame 13. A limit wheel 16 is fixedly connected to the other side of each turntable 15. A limiting groove is provided on the outer periphery of 6, and the inside of the limiting groove abuts against the limiting head 17. The limiting head 17 is rotatably connected to the frame 1 via a torsion spring. The bottom side of the limiting head 17 abuts against the top side of the lifting member 18. The one-way ratchet includes an inner shaft 19 fixedly connected to the middle of one side of the limiting wheel 16 and a toothed ring 20 fixedly connected to the outer periphery of one side of the limiting wheel 16. A pawl 21 is rotatably connected to the outer periphery of the inner shaft 19 via a torsion spring. A ratchet tooth is provided on the inner periphery of the toothed ring 20, and the pawl 21 and the ratchet tooth mesh with each other.

[0057] Specifically, the displacement rack 22 engages the gear ring 20 in a forward rotation, causing its inner circumference ratchet to engage the pawl 21. The pawl 21 generates a backward tilting force, which is limited by the inner shaft 19. This, in turn, applies force to the inner shaft 19, causing it to drive the connected limiting wheel 16 and turntable 15 to rotate in a forward direction. When the limiting wheel 16 rotates in a forward direction, it applies force to the limiting head 17 through its outer circumference limiting groove, causing the limiting head 17 to lift up and be reset by the torsion spring compressed by its rotation. The rotating turntable 1... The fifth compression spring connected to it simultaneously drives the connecting rod 14, which in turn pushes the eccentric wheel and connecting rod structure to apply force to the guide frame 13. This causes the guide frame 13 to apply force to the protrusion of the slide core 12, which in turn causes the slide core 12 to move the two tension rollers 11 connected to it. This increases the distance between the two tension rollers 11 and their height, thereby extending the distance the warp needs to travel at this point and simultaneously applying force to the warp, thus tightening the warp. At this time, the turntable 15... Under the action of the compressed spring, a tendency to reverse occurs. When the tendency to reverse occurs, the limiting wheel 16 connected to the turntable 15 will be stuck in the limiting groove by the limiting head 17. It will also be restricted by the lifting part 18 on the bottom side of the limiting head 17, preventing it from rotating. This prevents the limiting wheel 16 and the turntable 15 from reversing, keeping the sliding core 12 and the two tensioning rollers 11 connected to it in their original positions temporarily. After the warp tensioning is completed, the displacement rack 22 is pulled back to its original position. Due to the dual warp dynamic adjustment, the warp feeding structure will maximize the tension of the warp in a short time, allowing the tension detection structure to recover quickly and preventing the rack 22 from staying for too long. This will allow it to reset in time and prevent interference with the operation of other structures. After the rack 22 is pulled back to its original position, the pawl 21 leans towards the groove on the inner shaft 19 and pulls the torsion spring connected to it. The torsion spring is compressed and resets, allowing the gear ring 20 to rotate freely without affecting the inner shaft 19.

[0058] Please see the appendix Figure 11 - Appendix Figure 13 The feeding frame 3 is fixedly connected to the middle of the rear side of the frame 1, and two wire feeding rollers 28 are rotatably connected to the inner wall. One side of one of the wire feeding rollers 28 is connected to a gearbox via a synchronous pulley and synchronous belt. The gearbox is driven by a motor to transmit power to one of the wire feeding rollers 28 for feeding. Two racks 22 control the gearbox through a pull frame 35 fixedly connected to their adjacent sides to slow down the feeding speed of one of the wire feeding rollers 28 when the warp changes from a taut state to a slack state, until the warp returns to a taut state.

[0059] Please see the appendix Figure 11 - Appendix Figure 13 The jet frame 31 is used to heat-treat the warp yarn on the bottom side of the outlet using the input steam, so that the warp yarn can be relieved of stress after heat treatment and is easier to be in a taut state. One of the feed rollers 28 has a sliding assembly connected to the other side of the conveyor roller 31 via a belt pulley, so that the jet frame 31 can be moved to perform heat treatment, avoiding local overheating and damage to the warp yarn. The sliding assembly includes a reciprocating screw 29 rotatably connected to one side of the feed frame 3 and a slide bar 30 fixedly connected to the other side of the feed frame 3. The rear end of the reciprocating screw 29 passes through... Two meshing bevel gears are connected to the other side of one of the feed rollers 28 via a belt pulley. One end of the jet frame 31 is sleeved on the outer wall of the reciprocating screw 29, and the other end of the jet frame 31 is slidably connected to the outer wall of the slide rod 30. A contact head 32 is fixedly connected to the top side of the jet frame 31, and a contact frame 33 is fixedly connected to the bottom side of the two lifting members 18. When the jet frame 31 is raised to an oblique displacement position, the contact head 32 abuts against the contact frame 33, so that the lifting member 18 will produce an upward displacement.

[0060] Specifically, one of the wire feeding rollers 28 is driven by a reciprocating screw 29 via a pulley and belt, which in turn drives two meshing bevel gears. During the reciprocating movement of the transmission jet frame 31 and the heat treatment of the warp yarn using steam, the displacement causes the top contact head 32 to indirectly abut against the contact frame 33 connected to the lifting member 18, thereby causing the lifting member 18 to move upward and lift the limiting head 17. Please refer to the appendix again. Figure 5 - Appendix Figure 7 At this time, the limit head 17 will temporarily disengage from the limit wheel 16 and then re-limit it, thereby allowing the limit wheel 16 to temporarily reverse, causing the turntable 15 connected to it to reverse, and the transmission link 14 to pull back, thereby causing the slide core 12 and its connected tension roller 11 to gradually reset, so that the warp thread gradually releases the dynamic tension and returns to the normal tension state, preventing the transient contact tension compensation from loosening again.

[0061] Please see the appendix Figure 14 - Appendix Figure 16The gearbox includes a mounting frame 34 fixedly connected to the bottom side of the frame 1. Inside the mounting frame 34, there are two rotating gears (gear 1 and gear 2), which mesh with each other. Gears 1 and 2 are of different sizes, and their positions are symmetrical at an oblique angle to each other. A drive shaft 37 is fixedly connected to the adjacent side of one gear 1 and one gear 2. One end of the drive shaft 37 is driven by a motor. A movable shaft 36 is fitted inside the inner wall of the other gear 1 and the other gear 2. The middle end of the movable shaft 36 is connected to the other gear 1 and the other gear 2 via a meshing disc. A displacement frame is rotatably connected to one end of the movable shaft 36, and the top of the displacement frame is connected to the mounting frame 34. The outer wall of the frame is slidably connected, the bottom end of the pull frame 35 is slidably connected to the outer wall of the mounting frame 34, the top side of the mounting frame 34 is provided with a connecting rod 41, one end of the connecting rod 41 is rotatably connected to the pull frame 35, and the other end of the connecting rod 41 is rotatably connected to the displacement frame. The other end of the movable shaft 36 is connected to a rotating sleeve 40 through a spline shaft spline groove. The rotating sleeve 40 is rotatably connected to the outer wall of the mounting frame 34. The mounting frame 34 is connected to one side of one of the wire feeding rollers 28 through a synchronous pulley and synchronous belt. The biting disc includes a biting shaft 38 fixedly connected to the middle of the movable shaft 36. Biting pieces 39 are fixedly connected to the adjacent sides of the other gear 1 and the other gear 2. The biting shaft 38 and one of the biting pieces 39 are biting each other.

[0062] Specifically, under normal conditions, i.e., when the warp is taut, the motor drives the power shaft 37 to rotate, causing the power shaft 37 to drive two sets of meshing gears 1 and 2 to rotate. This causes the meshing plate 39, which is engaged with the meshing shaft 38, to transmit rotational power to the movable shaft 36. The movable shaft 36 then drives the rotating sleeve 40 to rotate via the spline shaft and spline groove, and drives the feed roller 28 to rotate via the synchronous pulley and synchronous belt. This ensures that the speed of the feed roller 28 matches the speed of the loom's take-up roller, so that the warp is in a balanced state at both ends during the feeding process, achieving tautness. During speed change, the connecting pull frame 35 is displaced by the two displaced racks 22, which in turn pulls the connecting rod 41, which in turn pulls the displacement frame connected to the movable shaft 36. This causes the displacement frame to pull the movable shaft 36, displacing it from its standard speed setting. The movable shaft then engages with another engagement piece 39, causing another set of meshing gears 1 and 2 to drive the movable shaft 36. This reduces the speed of the movable shaft 36 transmitted to the yarn feed roller 28, creating a speed difference with the loom's take-up roller. This results in the warp yarn being taut at one end under the action of the loom's take-up roller, where the force applied is greater than the force applied at the other end. After the warp yarn tension is restored, the pull frame 35 connected to the rack 22 is reset, thus restoring the speed of the yarn feed roller 28.

[0063] A jet pipe 27 is fixedly connected to one side of the two cylinders 23. A spray head is installed on the outer wall of the jet pipe 27. The jet pipe 27 is connected to the retraction chamber. The bottom input end of the air exchange valve 26 and the input end of the jet frame 31 are both externally connected to a steam supply pipe to provide power and a safe medium for heat treatment.

Claims

1. A flexible rapier weaving machine let-off drive mechanism, characterized in that, The utility model relates to a warp detection and tensioning device, including: inclined frame (2), the inner wall of inclined frame (2) is equipped with multiple detection rollers (4) through detection assembly, to make the warp when being from taut state to slack state on detection roller (4), detect slack signal, trigger the displacement of the sliding frame (10) of both sides of inclined frame (2), the rear side bottom end of inclined frame (2) is rotatably connected with feed roller (42); frame (1), the frame (1) is fixedly connected at the rear end top of inclined frame (2), and the top side left and right ends of frame (1) are slidably connected with two slide cores (12), and adjacent two slide cores (12) are mirror image inclined state, and the similar side of both ends slide core (12) is rotatably connected with taut roller (11) with the rear side of frame (1), and the slide core (12) is displaced through lifting assembly, and lifting assembly triggers unidirectional ratchet to carry out lifting work by the horizontal sliding rack (22) of both sides of frame (1) front end, and the bottom end left and right sides of frame (1) are slidably connected with jacking member (18), and lifting assembly is connected with jacking member (18), to reset by the rising of jacking member (18), and the displacement of rack (22) is triggered by the pushing assembly of sliding frame (10); feeding frame (3), the feeding frame (3) is fixedly connected at the rear side middle end of frame (1), and the inner wall is rotatably connected with two line conveying rollers (28), and one side of one of line conveying rollers (28) is connected with gearbox through synchronous belt synchronous wheel, and the gearbox is driven by motor, to transmit power to one of line conveying rollers (28) and carry out feeding work, and two rack (22) control gearbox through the fixedly connected pulling frame (35) of its similar side, to slow down the feeding speed of one of line conveying rollers (28) when the warp is from taut state to slack state, until the warp restores taut state; Jet frame (31) is used for heat treatment to the warp of the bottom side of output port by the input steam, to make the warp eliminate stress after heat treatment, and more easily be in taut state, and the other side of one of line conveying rollers (28) is connected with sliding assembly through belt pulley, to make jet frame (31) displacement and carry out heat treatment, avoid local space overheating damage warp.

2. A flexible rapier loom let-off drive according to claim 1, characterized in that The detection assembly includes multiple rotating seats (6) fixedly connected at the both sides of the inner wall of the inclined frame (2), the inside of the rotating seat (6) is connected with a torsion shaft (7) through a clockwork spring, one side of the torsion shaft (7) is fixedly connected with a rotating frame (5), both ends of the rotating frame (5) are rotatably connected with the detection roller (4), the other side of the torsion shaft (7) is fixedly connected with a guide roller (8), the outer wall of the guide roller (8) is provided with a guide groove, the top side of the sliding frame (10) is fixedly connected with a conducting head (9), the top end of the conducting head (9) is arranged in the inside of the guide groove.

3. A flexible rapier loom let-off drive according to claim 1, characterized in that The lifting assembly comprises two rotating discs (15), which are mirror-symmetrical, and the center of one side of the rotating disc (15) is rotationally connected to the rack (1) through a torsion spring, the middle end of both sides of the rack (1) is vertically slidably provided with a guide frame (13), both ends of the guide frame (13) are sleeved on the protruding part of the sliding core (12), the outer periphery of one side of the rotating disc (15) is rotationally connected with a connecting rod (14), the top end of the connecting rod (14) is rotationally connected with the middle end of the guide frame (13), the other side of the rotating disc (15) is fixedly connected with a limiting wheel (16), the outer periphery of the limiting wheel (16) is provided with a limiting groove, the inside of the limiting groove is abutted with a limiting head (17), the limiting head (17) is rotationally connected with the rack (1) through a torsion spring, and the bottom side of the limiting head (17) is abutted with the top side of a jacking piece (18).

4. A flexible rapier loom let-off drive according to claim 3, characterized in that The one-way ratchet comprises an inner shaft (19) fixedly connected to the middle end of one side of the limiting wheel (16) and a tooth ring (20) fixedly connected to the outer periphery of one side of the limiting wheel (16), the outer periphery of the inner shaft (19) is rotationally connected with a pawl (21) through a torsion spring, the inner periphery of the tooth ring (20) is provided with a ratchet, and the pawl (21) and the ratchet are mutually engaged.

5. A flexible rapier loom let-off drive according to claim 1, characterized in that The pushing assembly comprises cylinder bodies (23) fixedly connected to both ends of the front side of the rack (1), which are mirror-symmetrical, the bottom side of the cylinder body (23) is provided with an air exchange chamber (25), the inside of the cylinder body (23) is slidably connected with a piston shaft (24), the rear side of the piston shaft (24) is fixedly connected with a rack (22), the inside of the cylinder body (23) is divided into a pushing cavity and a retracting cavity through the piston shaft (24), the inside of the air exchange chamber (25) is sequentially provided with a pressurizing cavity, an exhaust cavity and a pressure relief cavity from top to bottom, the inside of the bottom end of the air exchange chamber (25) is slidably connected with an air exchange valve (26), one end of the air exchange valve (26) is fixedly connected with a sliding frame (10), the pressurizing cavity is connected with the pushing cavity through a pipeline, and the pressure relief cavity is connected with the retracting cavity through a pipeline.

6. A flexible rapier loom let-off drive according to claim 1, characterized in that The gearbox comprises a mounting frame (34) fixedly connected to the bottom side of the frame (1), two gear wheels I and two gear wheels II are rotatably arranged in the mounting frame (34), the gear wheels I and the gear wheels II are in mesh with each other, the gear wheels I and the gear wheels II are not of the same size, the positions between the two gear wheels I and the positions between the two gear wheels II are symmetrically inclined, one of the gear wheels I and one of the gear wheels II are fixedly connected to the proximal side of each other, one end of the power shaft (37) is driven by a motor, the other gear wheel I and the other gear wheel II are sleeved with the movable shaft (36), the middle end of the movable shaft (36) is connected to the other gear wheel I and the other gear wheel II through the engagement disc, one end of the movable shaft (36) is rotatably connected with the displacement frame, the top end of the displacement frame is slidably connected with the outer wall of the mounting frame (34), the bottom end of the pulling frame (35) is slidably connected with the outer wall of the mounting frame (34), the top side of the mounting frame (34) is provided with a connecting rod II (41), one end of the connecting rod II (41) is rotatably connected with the pulling frame (35), the other end of the connecting rod II (41) is rotatably connected with the displacement frame, the other end of the movable shaft (36) is connected with the rotating sleeve (40) through the spline shaft spline groove, the rotating sleeve (40) is rotatably connected with the outer wall of the mounting frame (34), and the mounting frame (34) is connected with one side of one of the wire rollers (28) through a synchronous wheel synchronous belt.

7. A flexible rapier loom let-off drive according to claim 6, characterized in that The engagement disc comprises an engagement shaft (38) fixedly connected to the middle end of the movable shaft (36), and the proximal side of the other gear wheel I and the proximal side of the other gear wheel II are fixedly connected with the engagement piece (39), and the engagement shaft (38) is engaged with one of the engagement pieces (39).

8. A flexible rapier loom let-off drive according to claim 1, characterized in that The sliding assembly comprises a reciprocating screw rod (29) rotatably connected to one side of the feeding frame (3) and a sliding rod (30) fixedly connected to the other side of the feeding frame (3), the rear end of the reciprocating screw rod (29) is connected to the other side of one of the wire rollers (28) through two meshing bevel gears and a belt and pulley, one end of the air jet frame (31) is sleeved on the outer wall of the reciprocating screw rod (29), and the other end of the air jet frame (31) is slidably connected to the outer wall of the sliding rod (30).

9. A flexible rapier loom let-off drive according to claim 1, characterized in that The top side of the air jet frame (31) is fixedly connected with the abutting head (32), and the bottom side of the two jacking pieces (18) is fixedly connected with the abutting frame (33).

10. A flexible rapier loom let-off drive according to claim 5, characterized in that The proximal side of the two cylinder bodies (23) is fixedly connected with the air jet pipe (27), the outer wall of the air jet pipe (27) is provided with a spray head, the air jet pipe (27) is connected with the retraction cavity, and the bottom side input end of the air exchange valve (26) and the input end of the air jet frame (31) are both externally connected with a steam supply pipe for supplying steam.

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