A leno device for air jet loom

Abstract

The present application relates to a leno device for an air-jet loom, comprising a frame, a turret, two wire feed tubes, a drive assembly, and two pay-off racks for mounting yarn bobbins. The turret is mounted on the frame, the drive assembly is used to drive the turret to rotate, the pay-off racks are mounted on the turret, the two pay-off racks are distributed along the axis of the turret, the wire feed tubes are mounted on the turret, the two wire feed tubes correspond one-to-one with the two pay-off racks, and the wire feed tubes allow yarn to pass through for leno. The present application has the effect of reducing yarn breakage.

Description

Technical Field

[0001] The present application relates to the field of cloth manufacturing, and in particular to a leno device for an air-jet loom. Background Art

[0002] Air jet looms are shuttleless looms that use a jet of air to pull the weft yarn through the shed. The working principle is that air is used as the weft insertion medium, and the compressed air jet creates frictional traction on the weft yarn, pulling it through the shed. The jet of air creates the weft insertion process.

[0003] Since the shuttleless loom needs to cut the weft yarn after the weft insertion is completed, the weft yarn is no longer continuous at both ends of the fabric, and burrs are formed on both sides of the fabric. The lehenge devices located on both sides of the air-jet loom wrap the weft yarn that has passed through the warp yarn and lehenge the weft yarn to prevent the edge warp yarn from loosening and detaching.

[0004] Currently, a Chinese utility model patent with publication number CN217499576U discloses an automatic leno mechanism for an air jet loom, comprising a yarn guide plate, two yarn guide pieces, and a drive mechanism for rotating the two yarn guide pieces. The drive mechanism includes a servo motor, a coupling, a drive shaft, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The servo motor is fixed to a mounting base, and the motor shaft of the servo motor is connected to the drive shaft via a coupling. A first synchronous pulley is provided at the other end of the drive shaft, and the first and second synchronous pulleys are connected by a synchronous belt. The two yarn guide pieces are symmetrically mounted on the synchronous belt, and the yarn guide plate is disposed on the mounting base. This utility model's automatic leno mechanism for an air jet loom directly drives the synchronous pulleys and synchronous belt via a servo motor, offering advantages such as ease of use and reduced cost.

[0005] Regarding the above-mentioned related technologies, the inventor believes that the following defects exist: the synchronous belt rotates under the drive of the servo motor, and the yarn guide piece set on the synchronous belt also moves with the synchronous belt. Since the synchronous belt is waist-shaped, the distance from the yarn guide piece to the yarn guide plate changes continuously with the movement of the synchronous belt, and the length of the yarn from the yarn guide plate to the yarn guide piece also changes accordingly. Since the weaving speed of the air-jet loom is relatively fast, the movement speed of the hemming assembly needs to match the weaving speed of the air-jet loom. The yarn is quickly switched between taut and relaxed states for a long time, and the yarn used for hemming is easy to break. Summary of the Invention

[0006] In order to reduce the occurrence of yarn breakage in a leno device, the present application provides a leno device for an air jet loom.

[0007] The present application provides a leno device for an air-jet loom, which adopts the following technical solution:

[0008] A hemming device for an air-jet loom comprises a frame, a turret, two wire feeding tubes, a driving assembly for driving the turret to rotate, and two pay-off frames for mounting yarn bobbins, wherein the turret is arranged on the frame, the driving motor is used to drive the turret to rotate, the pay-off frame is arranged on the turret, the two pay-off frames are distributed along the axis of the turret, the wire feeding tubes are arranged on the turret, the two wire feeding tubes correspond one-to-one to the two pay-off frames, and the wire feeding tubes allow yarn to pass through for hemming.

[0009] By adopting the above technical solution, two yarn bobbins filled with yarn are installed on the pay-off frame, and then the yarn on the yarn bobbin is passed through the two wire feed tubes respectively. After completing the installation work, the staff can start the drive component, and the drive component drives the two yarns to rotate around the wire feed tube. Each weft yarn passes through the fabric, and the rotating frame rotates half a circle. The positions of the two yarns are exchanged, and the yarns are cross-wound around each other on the weft yarn, and the weft yarn is twisted to reduce the detachment of the edge warp yarn. Since the wire feed tube and the pay-off frame rotate at the same time, the yarn entanglement is reduced, and the distance from the wire feed tube to the rotating frame remains unchanged, which reduces the change in the yarn pulling force during the twisting process and reduces the occurrence of yarn short lines.

[0010] Optionally, the driving assembly includes a driving motor, a first driving gear, a first driving ring gear, a rotating ring and two toggle rods, the rotating ring is rotatably connected to the frame, the inner side wall of the rotating ring is provided with eight toggle grooves, the toggle grooves extend radially along the rotating ring, and the eight toggle grooves are circumferentially distributed along the axis of the rotating ring, the toggle rod is arranged on the rotating frame, the two toggle rods are circumferentially distributed along the rotation line of the rotating frame, the two toggle rods and the two wire pipes are staggered, the rotating ring and the rotating frame are eccentrically arranged, the toggle grooves are used to accommodate the toggle rods and the wire pipes, the first driving ring gear is arranged on the rotating ring, the driving motor is arranged on the frame, the first driving gear is arranged on the output shaft of the driving motor, and the first driving gear is meshed with the first driving ring gear.

[0011] By adopting the above technical solution, the staff can start the drive motor, the drive motor drives the first drive gear to rotate, the first drive gear drives the first drive ring gear to rotate, the first drive ring gear drives the rotating ring to rotate, and during the rotation of the rotating ring, the rotating frame is driven to rotate. The wire feed tube and the toggle rod on the rotating frame are staggered so that the rotating ring can smoothly drive the rotating frame to rotate. Since eight toggle grooves are provided on the rotating ring, the rotating ring can drive the rotating frame to rotate two circles for each rotation of the rotating ring; different from the planetary gear hemming mechanism, the wire pay-off frame of the planetary gear hemming structure is provided on the planetary gear; the drive assembly structure is simpler, and the toggle groove and the wire feed tube cooperate to drive the rotating frame to rotate, and the yarn is away from the gear structure, reducing the contact between the yarn and the lubricating oil of the lubricating gear.

[0012] Optionally, the pay-off frame includes a mounting plate, a sliding plate, a first clamping cone, a second clamping cone and a spring, the mounting plate is arranged on the rotating frame, the first clamping cone is rotatably connected to the mounting plate, the sliding plate is slidably connected to the rotating frame along the direction of approaching or moving away from the mounting plate, the second clamping cone is rotatably connected to the sliding plate, and the spring is used to drive the sliding plate to move toward the mounting plate.

[0013] By adopting the above technical solution, when the pay-off stand needs to install the yarn bobbin, the staff can overcome the elastic force of the spring, move the sliding plate away from the mounting plate, and the second clamping cone away from the first clamping cone. Then the staff aligns the two ends of the yarn bobbin to the side walls of the first clamping cone and the second clamping cone respectively. Then the staff loosens the sliding plate, and the sliding plate moves toward the mounting plate under the elastic force of the spring. The first clamping cone and the second clamping cone clamp the yarn bobbin. The first clamping cone and the second clamping cone are rotatable, which is convenient for the yarn bobbin to be paid out on the pay-off stand. The pay-off stand has a simple structure and is easy for the staff to operate.

[0014] Optionally, the pay-off rack further includes a sliding rod and a sliding tube, the length direction of the sliding rod is parallel to the sliding direction of the sliding plate, one end of the sliding rod is arranged on the mounting plate, the length direction of the sliding tube is parallel to the length direction of the sliding rod, one end of the sliding tube is arranged on the sliding plate, and the sliding rod is slidably connected in the sliding tube.

[0015] By adopting the above technical solution, the sliding rod cooperates with the sliding tube, which improves the alignment of the first clamping cone with the second clamping cone, so that the first clamping cone and the second clamping cone can better clamp the yarn bobbin, thereby improving the reliability of the pay-off stand.

[0016] Optionally, the pay-off rack also includes a locking piece, which includes a sealing gasket and a rotating bolt. The sealing gasket is arranged on the end of the sliding rod away from the mounting plate. The rotating bolt is threadedly connected to the side wall of the sliding tube. The rotating bolt penetrates into the sliding tube. A connecting hole is provided along the length direction of the rotating bolt, and the tail of the rotating bolt is used to abut against the inner wall of the sliding tube.

[0017] By adopting the above technical solution, due to the fast rotation speed of the rotating frame, the spring is easily stretched by centrifugal force during the rotation process, causing the second clamping cone to move away from the first clamping cone, causing the yarn bobbin to fall; the sealing gasket forms a sealed space in the sliding tube, and a connecting hole is opened on the rotating bolt, so that air can enter the sliding tube through the connecting hole; first, the staff loosens the bolt so that the tail of the rotating bolt is away from the inner wall of the sliding tube, so that air can enter the sliding tube through the connecting hole, and then overcomes the elastic force of the spring to move the sliding plate in the direction away from the mounting plate, and then place the yarn bobbin between the first clamping cone and the second clamping cone. Under the action of the spring elastic force, the first clamping cone and the second clamping cone clamp the yarn bobbin, and then the staff tightens the rotating bolt, and the tail of the rotating bolt is pressed against the inner wall of the sliding tube, the sliding tube is sealed, and the distance between the sliding plate and the mounting plate is limited under the action of atmospheric pressure, thereby reducing the movement of the second clamping cone relative to the movement of the rotating frame during the rotation of the rotating frame.

[0018] Optionally, a conical groove for accommodating the first clamping cone is formed on the second clamping circular platform.

[0019] By adopting the above technical solution, the first clamping cone and the second clamping cone are close to and abut against each other under the action of the spring, making the conical heads of the first clamping cone and the second clamping cone easily damaged. The conical groove removes the head of the second clamping cone. The conical groove is also used to protect the conical head of the first clamping cone, reducing the collision between the first clamping cone and the second clamping cone under the action of the spring.

[0020] Optionally, a tensioning assembly for tightening the yarn is provided on the rotating frame, and the tensioning assembly includes two tensioning tubes, and the two tensioning tubes correspond one-to-one to the two wire conveying tubes, one end of the tensioning tube faces the wire conveying tube, and the other end of the tensioning tube faces the pay-off frame, and the end face of the tensioning tube facing the pay-off frame is arc-shaped, and the distance from the end point of the arc-shaped end face of the tensioning tube to the pay-off frame is smaller than the distance from the midpoint of the arc-shaped end face of the tensioning tube to the pay-off frame.

[0021] By adopting the above technical solution, since the yarn on the yarn bobbin is spirally wound onto the yarn bobbin, the distance from the yarn bobbin to the wire delivery tube is different, the distance from the two ends of the yarn bobbin to the wire delivery tube is greater than the distance from the middle of the yarn bobbin to the wire delivery tube, the yarn passes through the tensioning tube, and since the tensioning tube is arc-shaped at one end facing the pay-off frame, the yarn can also smoothly enter the tensioning tube during the movement of the yarn on the yarn bobbin, and the distance from the arc midpoint of the tensioning tube to the mounting frame is greater than the distance from the two ends of the tensioning tube to the pay-off frame. Therefore, after the yarn is paid out from the yarn bobbin, passes through the tensioning tube and enters the wire delivery tube, the yarn is always in a tensioned state, which improves the effect of the equipment hemming.

[0022] Optionally, the tensioning assembly also includes two adjusting parts that facilitate passing the yarn through the tensioning tube, and the two adjusting parts correspond one-to-one to the two tensioning tubes. The adjusting parts include two connecting rods and a bidirectional screw. The bidirectional screw is rotatably connected to the frame, and the connecting rod slides along the length direction of the bidirectional screw to be connected to the rotating frame. The two connecting rods are respectively threaded to be connected to the opposite threaded ends of the bidirectional screw. The tensioning tube includes two half tubes, and the two connecting rods correspond one-to-one to the two half tubes. One end of the connecting rod is set on the outer wall of the half tube.

[0023] By adopting the above technical solution, since the tensioning tube is of special shape, the yarn does not need to be passed through the tensioning tube, and the passing is blind, which makes it inconvenient to install the yarn. The staff can rotate the bidirectional screw, and the two connecting rods move away from each other. The two connecting rods drive the two half-tubes away from each other, so that the staff can place the yarn between the two half-tubes. After that, the staff rotates the bidirectional screw again to move the two connecting rods closer to each other, so that the two half-tubes form a tensioning tube again, completing the installation of the yarn. The adjustment component realizes convenient installation of the yarn.

[0024] Optionally, the drive assembly also includes a second drive gear and a second drive ring gear, the second drive gear is arranged on the output shaft of the drive motor, the second drive ring gear is arranged on the rotating ring, the distance from the second drive gear to the first drive gear is greater than the thickness of the first drive ring gear, the second drive gear is used to drive the second drive ring gear to rotate, the transmission ratio of the first drive ring gear to the first drive gear is greater than the transmission ratio of the second drive ring gear to the second drive gear, and the drive motor is slidably connected to the frame along the direction from the first drive ring gear to the second drive ring gear.

[0025] By adopting the above technical solution, the driving motor drives the first driving gear to rotate, and the first driving gear is engaged with the first ring gear. The first driving gear drives the first driving ring gear to rotate and drives the rotating ring to rotate. The rotating ring drives the rotating frame to rotate, and the rotating frame drives the two strands of yarn to twist. When the twist speed needs to be reduced, the staff can move the driving motor to disengage the first driving gear from the first driving ring gear and mesh the second driving gear with the second driving ring gear. Since the transmission ratio of the first driving ring gear to the first driving gear is greater than the transmission ratio of the second driving ring gear to the second driving gear, the twist speed can be changed without changing the rotation speed of the driving motor, so that the twist speed of the twist device can be quickly adjusted.

[0026] Optionally, the drive assembly also includes a clamping member, which includes a limiting rod and a locking rod. The limiting rod is rotatably connected to the side wall of the drive motor, and the rotation axis of the limiting rod is parallel to the length direction of the locking rod. The locking rod is arranged on the frame, and the length direction of the locking rod is parallel to the sliding direction of the drive motor. The locking rod is provided with two clamping grooves distributed along the length direction of the locking rod, and the clamping grooves are used to clamp the limiting rod.

[0027] By adopting the above technical solution, since the driving motor rotates too fast, the first driving gear and the first driving ring gear or the second driving gear and the second driving ring gear may be disengaged. The staff can rotate the limiting rod on the side wall of the driving motor to engage it into the engaging groove, thereby reducing the slippage of the driving motor during the driving process and improving the reliability of the driving motor in driving the equipment to perform hemming.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The drive assembly is used to drive the turret to rotate, and the turret drives the two strands of yarn to twist the edges;

[0030] 2. The pay-off frame is used to clamp the yarn bobbin and overcome the centrifugal force during rotation through the locking member;

[0031] 3. The tension tube is used to keep the yarn in a taut state during the unwinding process, thereby improving the twisting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a leno device used for air jet looms.

[0033] Figure 2 yes Figure 1 Schematic diagram of the structure of the drive component.

[0034] Figure 3 yes Figure 1 Schematic diagram of the structure of the middle pay-off stand.

[0035] Figure 4 yes Figure 3 Cross-section of the middle slip tube showing the locking mechanism.

[0036] Figure 5 yes Figure 3 The enlarged view of point A in the middle is used to show the tensioning component.

[0037] Reference numerals: 1, frame; 2, rotating frame; 21, rotating disk; 22, rotating rod; 3, wire conveying tube; 4, driving assembly; 41, driving motor; 42, first driving gear; 43, first driving ring gear; 44, rotating ring; 441, toggle slot; 45, toggle rod; 46, second driving gear; 47, second driving ring gear; 48, clamping member; 481, limiting rod; 482, locking rod; 483, clamping slot; 5, pay-off frame; 51 , mounting plate; 52, sliding plate; 53, first clamping cone; 54, second clamping cone; 541, conical groove; 55, spring; 56, sliding rod; 57, sliding tube; 58, locking piece; 581, sealing gasket; 582, rotating bolt; 583, connecting hole; 6, tensioning assembly; 61, tensioning tube; 611, half tube; 62, adjusting piece; 621, connecting rod; 622, bidirectional screw; 623, mounting rod; 7, yarn bobbin. DETAILED DESCRIPTION

[0038] The following is combined with Figure 1-5 This application is described in further detail.

[0039] The embodiment of the present application discloses a leno device for an air jet loom. Figure 1 The two thread conveying tubes 3 are arranged on the rotating disk 21 and the rotating rod 22, and the tensioning assembly 6 is arranged on the rotating rod 22. The thread conveying tube 3 is fixed on the other end of the rotating rod 22. The length direction of the thread conveying tube 3 is parallel to the length direction of the rotating rod 22. One end of the thread conveying tube 3 is fixed on the end surface of the rotating disk 21 away from the rotating rod 22. The thread conveying tube 3 passes through the rotating disk 21. The two thread conveying tubes 3 are evenly distributed circumferentially along the axis of the rotating rod 22. The thread conveying tube 3 is used to install the yarn bobbin 7. The thread conveying tube 5 is arranged on the rotating rod 22. The tensioning assembly 6 is arranged on the rotating rod 22. The tensioning assembly 6 is used to tighten the yarn. The driving assembly 4 is arranged on the frame 1. The driving assembly 4 is used to drive the rotating frame 2 to rotate.

[0040] refer to Figure 1 and Figure 2The driving assembly 4 includes a driving motor 41, a first driving gear 42, a first driving ring gear 43, a rotating ring 44, two toggle rods 45, a second driving gear 46, a second driving ring gear 47 and a clamping member 48. The length direction of the toggle rod 45 is parallel to the rotation axis of the rotating rod 22. One end of the toggle rod 45 is fixedly arranged on the end surface of the rotating disk 21 away from the rotating rod 22. The two toggle rods 45 are evenly distributed along the circumference of the rotation axis of the rotating rod 22. The two toggle rods 45 are staggered with the two transmission pipes 3. The two toggle rods 45 and the two The line pipes 3 are evenly distributed circumferentially along the axis of the rotating rod 22. The rotation axis of the rotating ring 44 is parallel to the rotation axis of the rotating rod 22. The rotating ring 44 is rotatably connected to the frame 1. The inner wall of the rotating ring 44 is provided with eight toggle grooves 441. The toggle grooves 441 extend along the radial direction of the rotating ring 44. The eight toggle grooves 441 are evenly distributed circumferentially along the axis of the rotating ring 44. The distance from the farthest end of the toggle groove 441 to the axis of the rotating ring 44 is the same as the distance between the two line pipes 3. The toggle groove 441 is used to cooperate with the line pipe 3 and the toggle rod 45.

[0041] refer to Figure 1 and Figure 2 The first drive ring gear 43 is coaxially arranged with the rotating ring 44, and the first drive ring gear 43 is fixedly arranged on the outer wall of the rotating ring 44. The second drive ring gear 47 is coaxially arranged with the first drive ring gear 43, and the second drive ring gear 47 is fixedly arranged on the end surface of the rotating ring 44 away from the rotating rod 22. The number of teeth of the first drive ring gear 43 is greater than the number of teeth of the second drive ring gear 47. The drive motor 41 is slidably connected to the frame 1 along the length direction of the rotating rod 22. The rotation axis of the first drive gear 42 is parallel to the rotation axis of the first drive ring gear 43. The first drive gear 42 is fixedly arranged on the output shaft of the drive motor 41. The first drive gear 42 and the second drive gear 46 are coaxially arranged with the first drive gear 42, and the second drive gear 46 is fixedly arranged on the output shaft of the drive motor 41. The number of teeth of the first drive gear 42 is less than the number of teeth of the second drive gear 46. The distance from the first drive gear 42 to the second drive gear 46 is greater than the thickness of the first drive ring gear 43.

[0042] refer to Figure 1 and Figure 2The clamping member 48 includes a limiting rod 481 and a locking rod 482. The length direction of the locking rod 482 is parallel to the rotation axis of the limiting rod 481. The upper end surface of the locking rod 482 is provided with two clamping grooves 483 along the length direction of the locking rod 482. The clamping grooves 483 extend in the vertical direction. The distance between the two clamping grooves 483 is equal to the distance from the first drive gear 42 to the second drive gear 46. The clamping grooves 483 pass through the two side walls of the locking rod 482. The length direction of the limiting rod 481 is perpendicular to the length direction of the locking rod 482. The limiting rod 481 is located on the side of the driving motor 41 close to the locking rod 482. One end of the limiting rod 481 is rotatably connected to the side wall of the driving motor 41 along the length direction of the locking rod 482. The clamping grooves 483 are used to clamp the limiting rod 481.

[0043] refer to Figure 3 and Figure 4 The two pay-off stands 5 correspond to the two wire conveying tubes 3 one by one. The two pay-off stands 5 are evenly distributed along the circumference of the rotation axis of the rotating rod 22. The pay-off stand 5 includes a mounting plate 51, a sliding plate 52, a first clamping cone 53, a second clamping cone 54, a spring 55, a sliding rod 56, a sliding tube 57 and a locking member 58. The end surface of the mounting plate 51 is perpendicular to the radial direction of the rotating rod 22. The mounting plate 51 is fixedly arranged on the side wall of the rotating rod 22. The length direction of the sliding rod 56 is parallel to the radial direction of the rotating rod 22. The sliding rod 56 is fixedly mounted on the end surface of the mounting plate 51 away from the rotating rod 22. The cross section of the sliding rod 56 is square. The length direction of the sliding tube 57 is parallel to the length direction of the sliding rod 56. The sliding tube 57 is sleeved on the sliding rod 56. The sliding plate 52 is parallel to the mounting plate 51. The sliding plate 52 is fixedly mounted on the end of the sliding tube 57 away from the mounting plate 51. The length direction of the spring 55 is parallel to the length direction of the sliding tube 57. The spring 55 is sleeved on the sliding rod 56. One end of the spring 55 The first end of the spring 55 is fixedly arranged on the mounting plate 51, and the other end of the spring 55 is fixedly arranged on the sliding tube 57. The axis of the first clamping cone 53 is parallel to the radial direction of the rotating rod 22. The first clamping cone 53 is rotatably connected to the end surface of the mounting plate 51 facing the sliding plate 52. The second clamping cone 54 is coaxially arranged with the first clamping cone 53. The second clamping cone 54 is rotatably connected to the end surface of the sliding plate 52 facing the mounting plate 51. The second clamping cone 54 is provided with a conical groove 541 for accommodating The first clamping cone 53 is received, and the locking member 58 includes a sealing gasket 581 and a rotating bolt 582. The sealing gasket 581 is fixedly set on the end of the sliding rod 56 away from the mounting plate 51, and the sealing gasket 581 abuts against the inner wall of the sliding tube 57. The rotating bolt 582 is perpendicular to the length direction of the sliding tube 57. The tail of the rotating bolt 582 is threadedly connected to the sliding tube 57 and penetrates the sliding tube 57. A connecting hole 583 is opened at the tail of the rotating bolt 582, and the connecting hole 583 passes through the rotating bolt 582.

[0044] refer to Figure 3 and Figure 5 The tensioning assembly 6 is located between the rotating disk 21 and the pay-off frame 5. The tensioning assembly 6 includes two tensioning tubes 61 and two adjusting members 62. The two adjusting members 62 correspond to the two pay-off frames 5 one by one. The adjusting member 62 includes two connecting rods 621, a bidirectional screw 622 and a mounting rod 623. The length direction of the mounting rod 623 is parallel to the length direction of the sliding rod 56. One end of the mounting rod 623 is fixedly arranged on the side wall of the rotating rod 22. The length direction of the bidirectional screw 622 is parallel to the length direction of the mounting rod 623. The bidirectional screw 622 is rotatably connected to the mounting rod 623. The connecting rod 621 is The length direction is perpendicular to the length direction of the mounting rod 623. The connecting rod 621 is slidably connected to the mounting rod 623 along the length direction of the mounting rod 623. The two connecting rods 621 are respectively threaded onto opposite threaded sections of the bidirectional screw 622. The two tensioning tubes 61 correspond one-to-one with the two adjusting members 62. The length direction of the tensioning tubes 61 is parallel to the length direction of the rotating rod 22. One end of the tensioning tube 61 faces the wire conveying pipe 3, and the other end faces the pay-off frame 5. The end surface of the tensioning tube 61 facing the pay-off frame 5 is an arcuate surface, and the line connecting the two ends of the arcuate surface is parallel to the rotation axis of the first clamping cone 53. The tensioning tube 61 includes two half-tubes 611, which correspond one-to-one with the two connecting rods 621. The end of the connecting rod 621 away from the bidirectional screw 622 is fixedly disposed on the outer wall of the half-tube 611.

[0045] The implementation principle of the hemming device for an air-jet loom in the embodiment of the present application is as follows: the staff needs to first install the yarn bobbin 7 on the pay-off frame 5, and the staff first rotates the rotating bolt 582, and the tail of the rotating bolt 582 is away from the inner wall of the sliding tube 57, so that the connecting hole 583 is connected with the inside of the sliding tube 57, and then the sliding plate 52 is moved away from the mounting plate 51 to overcome the elastic force of the spring 55, so that the second clamping cone 54 on the sliding plate 52 is away from the first clamping cone 53 on the mounting plate 51, and the yarn bobbin 7 is placed between the first clamping cone 53 and the second clamping cone 54, and the staff loosens the sliding plate 52, and the sliding plate 52 is guided by the sliding rod 56 and the sliding tube 57, and the yarn bobbin 7 is moved under the action of the elastic force of the spring 55. After clamping, the staff then rotates the rotating bolt 582 to make the tail of the rotating bolt 582 abut against the inner wall of the sliding tube 57, and the sealing gasket 581 seals the sliding tube 57. The yarn bobbin 7 is locked between the first clamping cone 53 and the second clamping cone 54 by the action of atmospheric pressure. Then the staff rotates the bidirectional screw 622 to move the two connecting rods 621 away from each other. The connecting rod 621 drives the half tube 611 away. The staff fixes the yarn on the yarn bobbin 7 and places it between the two half tubes 611. Then the bidirectional screw 622 is rotated in the opposite direction to move the two connecting rods 621 closer to each other, so that the half rings form a tensioning tube 61. The yarn passing through the tensioning tube 61 passes through the line conveying tube 3 to complete the installation of the yarn of the hemming device.

[0046] During the leno process, the two yarns are located on the upper and lower sides of the weft yarn respectively. The driving motor 41 drives the first driving gear 42 to rotate, the first driving gear 42 drives the first driving gear ring 43 to rotate, and the first driving gear ring 43 drives the rotating ring 44 to rotate. The rotating disk 21 is driven to rotate through the toggle slot 441 on the rotating ring 44, and the rotating disk 21 drives the yarn to rotate around the rotating disk 21. Since the weft yarn is located between the two yarns, the two yarns are alternately moved up and down to wrap the weft yarn. Then the loom feeds the new weft yarn between the two alternate yarns and repeats the above steps. When each weft yarn reaches the cloth, the rotating disk 21 rotates half a circle to entangle the weft yarn. Winding the hem, when the fabric is thicker, the speed of the rotating ring 44 driven by the drive motor 41 can be reduced to achieve adjustment. The staff disengages the limiting rod 481 from the engaging groove 483, moves the drive motor 41, and the first drive gear 42 disengages from the first drive ring gear 43. The second drive gear 46 engages with the second drive ring gear 47. Then, the limiting rod 481 is engaged in the engaging groove 483 to complete the fixation of the drive motor 41. The transmission ratio of the first drive gear 42 and the first drive ring gear 43 is greater than the transmission ratio of the second drive gear 46 and the second drive ring gear 47. The rotation speed of the rotating ring 44 driven by the drive motor 41 decreases.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A leno device for an air jet loom, characterized in that: The invention comprises a frame (1), a rotating frame (2), two wire feeding tubes (3), a driving assembly (4) and two pay-off frames (5) for installing yarn bobbins (7), wherein the rotating frame (2) is arranged on the frame (1), the driving assembly (4) is used to drive the rotating frame (2) to rotate, the pay-off frames (5) are arranged on the rotating frame (2), the two pay-off frames (5) are circumferentially distributed along the rotation axis of the rotating frame (2), the wire feeding tubes (3) are arranged on the rotating frame (2), the two wire feeding tubes (3) correspond to the two pay-off frames (5) in a one-to-one manner, and the wire feeding tubes (3) are provided for The yarn passes through for twisting, and the pay-off frame (5) includes a mounting plate (51), a sliding plate (52), a first clamping cone (53), a second clamping cone (54) and a spring (55). The mounting plate (51) is arranged on the rotating frame (2), the first clamping cone (53) is rotatably connected to the mounting plate (51), the sliding plate (52) is slidably connected to the rotating frame (2) in a direction close to or away from the mounting plate (51), the second clamping cone (54) is rotatably connected to the sliding plate (52), and the spring (55) is used to drive the sliding plate ( 52) moves toward the mounting plate (51); the pay-off rack (5) further comprises a sliding rod (56) and a sliding tube (57), the length direction of the sliding rod (56) is parallel to the sliding direction of the sliding plate (52), one end of the sliding rod (56) is arranged on the mounting plate (51), the length direction of the sliding tube (57) is parallel to the length direction of the sliding rod (56), one end of the sliding tube (57) is arranged on the sliding plate (52), and the sliding rod (56) is slidably connected in the sliding tube (57); the pay-off rack (5) further comprises a locking member (58) The locking member (58) includes a sealing gasket (581) and a rotating bolt (582), wherein the sealing gasket (581) is arranged on one end of the sliding rod (56) away from the mounting plate (51), and the rotating bolt (582) is threadedly connected to the side wall of the sliding tube (57), and the tail of the rotating bolt (582) penetrates into the sliding tube (57), and a connecting hole (583) is provided along the length direction of the rotating bolt (582), and the tail of the rotating bolt (582) is used to abut against the inner wall of the sliding tube (57).

2. The leno device for an air jet loom according to claim 1, characterized in that: The driving assembly (4) includes a driving motor (41), a first driving gear (42), a first driving ring gear (43), a rotating ring (44) and two toggle rods (45), wherein the rotating ring (44) is rotatably connected to the frame (1), and the inner side wall of the rotating ring (44) is provided with eight toggle grooves (441), wherein the toggle grooves (441) extend along the radial direction of the rotating ring (44), and the eight toggle grooves (441) are circumferentially distributed along the axis of the rotating ring (44), and the toggle rods (45) are arranged on the rotating frame (2), and the two toggle rods (45) are arranged along the rotating frame (2). The rotating axis of the movable frame (2) is distributed circumferentially, the two toggle rods (45) and the two wire conveying tubes (3) are staggered, the rotating ring (44) and the rotating frame (2) are eccentrically arranged, the toggle groove (441) is used to accommodate the toggle rod (45) and the wire conveying tube (3), the first driving ring gear (43) is arranged on the rotating ring (44), the driving motor (41) is arranged on the frame (1), the first driving gear (42) is arranged on the output shaft of the driving motor (41), and the first driving gear (42) is meshed with the first driving ring gear (43).

3. The leno device for an air jet loom according to claim 1, characterized in that: The second clamping cone (54) is provided with a conical groove (541) for accommodating the first clamping cone (53).

4. The leno device for an air jet loom according to claim 1, characterized in that: The rotating frame (2) is provided with a tensioning assembly (6) for tightening the yarn, and the tensioning assembly (6) includes two tensioning tubes (61), and the two tensioning tubes (61) correspond to the two wire conveying tubes (3) one by one, one end of the tensioning tube (61) faces the wire conveying tube (3), and the other end of the tensioning tube (61) faces the pay-off frame (5), and the end face of the tensioning tube (61) facing the pay-off frame (5) is arc-shaped, and the distance from the end point of the arc-shaped end face of the tensioning tube (61) to the pay-off frame (5) is less than or equal to the distance from the midpoint of the arc-shaped end face of the tensioning tube (61) to the pay-off frame (5).

5. The leno device for an air jet loom according to claim 4, characterized in that: The tensioning assembly (6) also includes two adjusting members (62) for facilitating the yarn passing through the tensioning tube (61), the two adjusting members (62) corresponding one-to-one to the two tensioning tubes (61), the adjusting member (62) including two connecting rods (621) and a bidirectional screw (622), the bidirectional screw (622) being rotatably connected to the frame (1), the connecting rod (621) being slidably connected to the rotating frame (2) along the length direction of the bidirectional screw (622), the two connecting rods (621) being respectively threadedly connected to the opposite threaded ends of the bidirectional screw (622), the tensioning tube (61) including two half-tubes (611), the two connecting rods (621) corresponding one-to-one to the two half-tubes (611), and one end of the connecting rod (621) being arranged on the outer side wall of the half-tube (611).

6. The leno device for an air jet loom according to claim 2, characterized in that: The driving assembly (4) further includes a second driving gear (46) and a second driving ring gear (47), wherein the second driving gear (46) is arranged on the output shaft of the driving motor (41), and the second driving ring gear (47) is arranged on the rotating ring (44), and the second driving gear (46) is used to drive the second driving ring gear (47) to rotate when the first driving ring gear (43) is disengaged from the first driving gear (42), and the transmission ratio between the first driving ring gear (43) and the first driving gear (42) is greater than the transmission ratio between the second driving ring gear (47) and the second driving gear (46), and the driving motor (41) is connected to the frame (1) by sliding along the direction from the first driving ring gear (43) to the second driving ring gear (47).

7. The leno device for an air jet loom according to claim 6, characterized in that: The driving assembly (4) further includes a clamping member (48), the clamping member (48) including a limiting rod (481) and a locking rod (482), the limiting rod (481) being rotatably connected to the side wall of the driving motor (41), the rotation axis of the limiting rod (481) being parallel to the length direction of the locking rod (482), the locking rod (482) being arranged on the frame (1), the length direction of the locking rod (482) being parallel to the sliding direction of the driving motor (41), and the locking rod (482) being provided with two clamping grooves (483) distributed along the length direction of the locking rod (482), the clamping grooves (483) being used for clamping the limiting rod (481).

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