A water jet loom with a weft tension stabilization control structure

Abstract

This invention relates to the field of water jet loom technology, and more particularly to a water jet loom with a weft tension stabilization control structure. It includes a loom with a reed inside, and a posture holding mechanism. The posture holding mechanism includes an air pump mounted on the loom, the output end of which is connected to an air supply pipe. Through the design of the posture holding mechanism, when the reed pushes the weft yarn towards the weft insertion point, the special shape of the adjusting rod allows the lifting rod to rise and fall, thereby controlling whether two sets of holding air pipes spray high-pressure airflow. This prevents the weft yarn, tilted towards the nozzle's spray direction, from moving due to the high-pressure airflow. When the weft yarn is cut, the high-pressure airflow from the holding air pipes keeps the weft yarn facing the nozzle's spray direction under the influence of the high-pressure airflow. The design of the twisting mechanism allows for twisting of the weft yarn, enhancing its resilience and effectively preventing contact between the weft and warp yarns, and thus preventing bending.

Description

Technical Field

[0001] This invention relates to the field of water jet loom technology, and in particular to a water jet loom with a weft yarn tension stabilization control structure. Background Technology

[0002] Water jet looms are shuttleless looms that use high-speed jets of water to guide the weft yarn through the shed. They have advantages such as high efficiency, stability and energy saving, and have become an indispensable part of the modern textile industry.

[0003] Because the movement of the weft yarn relies entirely on the control of the high-speed water jet, the tension of the weft yarn cannot be guaranteed, which can easily lead to weft yarn slack and fabric defects. After the weft yarn comes into contact with the reed, its posture will be affected. When the weft yarn is cut, it will undergo elastic contraction or twisting. When the weft yarn is sprayed again, the contraction and twisting of the weft yarn will cause its initial position to be uncertain. When the weft yarn is sprayed, the tension distribution of the weft yarn is uneven, which directly affects the flight trajectory of the water jet and causes the warp and weft yarns to bend upon contact. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention provides a water jet loom with a weft tension stabilization control structure.

[0005] The technical implementation scheme of the present invention is as follows: It includes a loom, a reed is provided inside the loom, and a posture holding mechanism. The posture holding mechanism includes an air pump installed on the loom, the output end of the air pump is connected to an air supply pipe, a nozzle for ejecting weft yarn is installed on the loom, a twisting mechanism for twisting the weft yarn is provided on the loom, two pairs of holding air pipes connected to the air supply pipe are fixedly installed on the outer wall of the nozzles via a mounting bracket, a lifting rod that moves in the vertical direction is slidably installed through the outer wall of the air supply pipe, an adjusting rod for moving the lifting rod is provided on the lower side of the lifting rod, and a horizontal groove for sliding and limiting the adjusting rod on the loom.

[0006] As a further preferred embodiment, the top of the adjusting rod is composed of a trapezoidal portion and a horizontal portion.

[0007] As a further preferred embodiment, the attitude holding mechanism also includes a crank rod, which is fixedly installed on one side of the reed, and a convex shaft is fixedly installed on one end of the crank rod. The adjusting rod has a through groove on one side, and the convex shaft is located in the through groove.

[0008] As a further preferred embodiment, the twisting mechanism includes a bracket mounted on the loom, an elastic slider slidably mounted inside the bracket, a first twisting rod elastically hinged to one side of the elastic slider, a second twisting rod that moves up and down and cooperates with the first twisting rod slidably mounted to one side of the bracket, a rotating rod hinged to the bottom of the bracket, a friction rod for moving the first twisting rod slidably mounted to one side of the bracket, a sliding shaft fixedly mounted to one side of the friction rod, and a through hole for sliding limit of the sliding shaft on the rotating rod.

[0009] As a further preferred embodiment, a limiting component is also included, which includes an elastic wedge rod slidably installed within the bracket. The elastic wedge rod cooperates with the first kneading rod, and a wedge pin is fixedly installed at the bottom of the elastic wedge rod. The wedge pin is slidably connected to the bracket, and the elastic slider has a locking groove that cooperates with the wedge pin.

[0010] As a further preferred embodiment, the system also includes a vertical rod, on one side of the elastic slider, a first wedge block is fixedly mounted on one side of the vertical rod, and a second wedge block that cooperates with the first wedge block is fixedly mounted on one side of the second kneading rod.

[0011] As a further preferred embodiment, a tightening mechanism is also included. The tightening mechanism includes a connecting frame mounted on the reed. A T-shaped rod is slidably mounted inside the connecting frame along the front-back direction, and a vertical rail is fixedly mounted thereon. A pair of sliding blocks are slidably mounted on one side of the T-shaped rod, and a connecting rod passing through the vertical rail is fixedly mounted on one side of the sliding blocks. A toothed sleeve is slidably mounted on the outer wall of the connecting rod, and a tension spring is provided between one end of the connecting rod and the inner wall of the toothed sleeve.

[0012] As a further preferred embodiment, the tightening mechanism also includes a fixing block that is fixedly installed inside the loom and cooperates with the T-shaped rod. An elastic telescopic rod is fixedly installed between the T-shaped rod and the connecting frame. A pair of guide grooves are symmetrically opened inside the connecting frame. A guide rod located in the guide groove is fixedly installed on the other side of the sliding block.

[0013] As a further preferred embodiment, a pair of rectangular frames are slidably installed inside the vertical rail, and the connecting rod rotatably passes through the rectangular frames. A ring is slidably installed inside the rectangular frames and movably sleeved on the outer wall of the connecting rod. A torsion spring is provided between one end of the ring and the inner wall of the rectangular frame. A protrusion is fixed to the inner wall of the ring, and the outer wall of the connecting rod has a guide groove, with the protrusion located in the guide groove.

[0014] As a further preferred embodiment, the guide groove of the connecting rod is spiral-shaped.

[0015] The present invention has the following advantages:

[0016] 1. This invention, through the design of the posture holding mechanism, allows the lifting rod to rise and fall by the special shape of the adjusting rod when the reed pushes the weft yarn towards the weft opening. This controls whether the two sets of holding air ducts spray high-pressure airflow, preventing the weft yarn, which is inclined towards the nozzle spray direction, from moving due to the influence of the high-pressure airflow. When the weft yarn is cut, the high-pressure airflow sprayed by the holding air ducts keeps the weft yarn facing the nozzle spray direction under the influence of the high-pressure airflow. Through the design of the twisting mechanism, the weft yarn can be twisted, enhancing its anti-rebound ability and effectively preventing the weft yarn from contacting the warp yarn and bending.

[0017] 2. Through the design of the limiting component, the present invention limits the elastic slider by a wedge pin when the friction rod slides backward, so that the first twisting rod can rotate first until the first twisting rod can no longer rotate, and then the elastic slider can slide backward, thereby ensuring the amount of twisting of the weft yarn by the first twisting rod.

[0018] 3. The present invention, through the design of the tightening mechanism, applies tension to the weft yarn through two toothed sleeves, which can provide stable tension to the weft yarn. When the weft yarn is taut, the extension of the tension spring can prevent the toothed sleeves from applying too much tension to the weft yarn, which would cause the weft yarn to break. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the attitude-maintaining mechanism of the present invention;

[0021] Figure 3 This is a schematic diagram of the installation of the lifting rod of the present invention;

[0022] Figure 4 This is a schematic diagram of the kneading mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram of the installation at the first wedge block of the present invention;

[0024] Figure 6 This is a schematic diagram of the installation of the elastic wedge rod of the present invention;

[0025] Figure 7 This is a schematic diagram of the installation of the wedge pin in this invention;

[0026] Figure 8 This is a schematic diagram of the installation at the connecting frame of the present invention;

[0027] Figure 9 This is a schematic diagram of the tightening mechanism of the present invention;

[0028] Figure 10 This is a schematic diagram of the installation of the guide rod of the present invention;

[0029] Figure 11 This is a schematic diagram of the installation at the ring of the present invention;

[0030] Figure 12 This is a schematic diagram of the installation of the protrusion at the point of invention.

[0031] Among them: 1-loom, 101-steel reed, 201-air pump, 202-air supply pipe, 203-nozzle, 204-holding air pipe, 206-lifting rod, 207-adjusting rod, 301-curved rod, 302-through groove, 401-support, 402-elastic slider, 403-first twisting rod, 404-second twisting rod, 405-rotating rod, 406-friction rod, 501-elastic wedge rod, 502-wedge pin, 601-vertical rod, 602-first wedge block, 603-second wedge block, 701-connecting frame, 702-T-shaped rod, 7021-sliding block, 703-vertical rail, 704-connecting rod, 705-tooth sleeve, 801-fixing block, 802-elastic telescopic rod, 803-guide rod, 901-rectangular frame, 902-circular ring, 903-protrusion. Detailed Implementation

[0032] The present invention will be further described below with reference to specific embodiments. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0033] Example 1

[0034] A water jet loom with a weft tension stabilization control structure, such as Figures 1-3As shown, the system includes a loom 1, which contains a reed 101 for pushing the weft yarn. It also includes a posture holding mechanism for controlling the weft yarn's posture. The posture holding mechanism includes an air pump 201 mounted on the loom 1, the output of which is connected to an air supply pipe 202. A nozzle 203 for ejecting the weft yarn is mounted on the loom 1. A twisting mechanism for twisting the weft yarn is also provided on the loom 1. Twisting the weft yarn enhances its resilience. The outer wall of the nozzle 203 is secured by a mounting bracket. Two pairs of retaining air ducts 204 of different lengths are fixedly installed and connected to the air supply pipe 202. A lifting rod 206 that moves in the vertical direction is slidably installed through the outer wall of the air supply pipe 202. The lifting rod 206 can control whether the air supply pipe 202 is connected by raising and lowering. An adjusting rod 207 for moving the lifting rod 206 up and down is provided on the lower side of the lifting rod 206. The loom 1 has a horizontal groove for the adjusting rod 207 to slide and limit. The top of the adjusting rod 207 is composed of a trapezoidal part and a horizontal part, with the trapezoidal part located on the front side of the horizontal plane.

[0035] like Figure 2 and Figure 3 As shown, the attitude holding mechanism also includes a crank 301. The crank 301 is fixedly installed on the rear left side of the reed 101. A convex shaft is fixedly installed on the left end of the crank 301. One side of the adjusting rod 207 has a through groove 302, and the convex shaft cooperates with the through groove 302.

[0036] Initially, there is a gap between the lifting rod 206 and the inner wall of the air supply pipe 202. The air pump 201 sprays high-pressure airflow through the air supply pipe 202 and the holding air pipe 204 towards the nozzle 203 in the direction of weft yarn ejection. The weft yarn is first ejected through the nozzle 203, and then the loom 1 controls the reed 101 to swing forward, causing the reed 101 to push the weft yarn towards the weaving point. After being pushed, the weft yarn is inclined in the spray direction of the nozzle 203. At the same time, the reed 101 drives the crank rod 301 to move, and the convex shaft of the crank rod 301 squeezes the inner wall of the through groove 302. The pressure is applied, and the adjusting rod 207 slides forward along the horizontal groove of the loom 1. The lifting rod 206 slides upward under the action of the trapezoidal part of the adjusting rod 207. Then, the lifting rod 206 contacts the horizontal surface of the trapezoidal part of the adjusting rod 207. After sliding, the lifting rod 206 blocks the air supply pipe 202, so that the two sets of retaining air pipes 204 no longer eject high-pressure airflow. This prevents the weft yarn inclined in the ejection direction of the nozzle 203 from being twisted by the high-pressure airflow. Then, the cutting component in the loom 1 cuts the weft yarn (the cutting component is an existing one). (Technical details omitted here) Simultaneously, the lifting rod 206 passes over the trapezoidal portion of the adjusting rod 207 and contacts the horizontal portion of the adjusting rod 207. The lifting rod 206 then descends and resets, causing the two sets of retaining air ducts 204 to spray high-pressure airflow again. It should be noted that when the nozzle 203 sprays the weft yarn, the weft yarn experiences extreme tension, and the reed 101 moves at extremely high speed. When the weft yarn is cut, the tension on the remaining weft yarn decreases abruptly, causing the weft yarn to elastically contract or twist. Because the weft yarn is wetted by the water flow... After the weft yarn elastically shrinks or twists, it will stick to the nozzle 203 or other parts of the loom 1. This will cause the initial position of the weft yarn to be unstable when the nozzle 203 sprays the weft yarn next time, and the tension distribution of the weft yarn will be uneven, resulting in contact with the warp yarn or bending of the weft yarn. It is worth noting that the high-pressure airflow sprayed again by the air duct 204 is carried out at the same time as the weft yarn is cut. After the tension of the weft yarn disappears, the weft yarn can remain straight under the influence of the high-pressure airflow sprayed by the air duct 204, thereby preventing the above problems from occurring.

[0037] like Figures 4-6 As shown, the twisting mechanism includes a bracket 401 mounted on the loom 1. An elastic slider 402 is slidably mounted in the bracket 401 along the horizontal direction. A first twisting rod 403 is elastically hinged to the left side of the elastic slider 402. A second twisting rod 404, which moves up and down and cooperates with the first twisting rod 403, is elastically slidably mounted on the left side of the bracket 401. A rotating rod 405 is hinged to the bottom of the bracket 401. A friction rod 406 for moving the first twisting rod 403 is slidably mounted on the left side of the bracket 401. There is friction between the friction rod 406 and the outer wall of the first twisting rod 403. A sliding shaft is fixedly mounted on the top left side of the friction rod 406. The rotating rod 405 has a through hole for the sliding shaft to slide and limit.

[0038] like Figure 5 and Figure 6As shown, it also includes a limiting component, which includes an elastic wedge rod 501 that is slidably installed in the bracket 401 in the vertical direction. The elastic wedge rod 501 cooperates with the first kneading rod 403. When the first kneading rod 403 rotates, it can lift the elastic wedge rod 501 upward. A wedge pin 502 that is slidably connected to the bracket 401 is fixedly installed at the bottom of the elastic wedge rod 501. The top of the elastic slider 402 has a locking groove that cooperates with the wedge pin 502.

[0039] like Figure 5 As shown, it also includes a vertical rod 601, the vertical rod 601 is fixedly installed on the left side of the elastic slider 402, the first wedge 602 is fixedly installed on the rear bottom of the vertical rod 601, and the second wedge 603 that cooperates with the first wedge 602 is fixedly installed on the front middle of the second kneading rod 404.

[0040] Initially, the wedge pin 502 engages in the locking groove of the elastic slider 402, limiting its position. Before the weft yarn is cut, the reed 101 swings forward and pushes the rotating rod 405, causing it to rotate around the connection point of the bracket 401. The rotating rod 405 then presses against the sliding shaft of the friction rod 406 through its through-hole, causing the friction rod 406 to slide backward. At this point, the weft yarn contacts the top of the second twisting rod 404 under the action of the reed 101. Due to the high tension on the weft yarn, the weft yarn and the second twisting rod... The contact of 404 will not cause the weft yarn to twist. When the friction rod 406 slides backward, the first twisting rod 403 rotates downward around the connection point of the elastic slider 402 under the action of the friction rod 406. Then, the first twisting rod 403 squeezes the elastic wedge rod 501, causing the elastic wedge rod 501 to drive the wedge pin 502 to rise and disengage from the locking groove of the elastic slider 402. At the same time, the weft yarn is cut, the bottom surface of the first twisting rod 403 is horizontal and no longer rotates, and the first twisting rod 403 and the second twisting rod 403... 04. The friction rod 406 continues to slide backward, and through the first twisting rod 403, it drives the elastic slider 402 to slide backward. The first twisting rod 403, in conjunction with the second twisting rod 404, twists the weft yarn, thereby enhancing its anti-rebound ability. Simultaneously, the elastic slider 402 slides, driving the first wedge block 602 backward via the vertical rod 601. After moving, the first wedge block 602 contacts the second wedge block 603. Under the action of the first wedge block 602, the second wedge block 603 drives the first... The second twisting rod 404 descends downwards and no longer contacts the weft yarn after it descends. The weft yarn, after being twisted, exhibits a slight rebound. Combined with the high-pressure airflow ejected from the air duct 204, this further prevents the weft yarn from contacting the warp yarn or bending. By quickly restoring the weft yarn to a straight state, the flight posture of the weft yarn can be significantly changed when it is ejected again. When the nozzle 203 ejects the weft yarn, it can ensure that the initial tension on the weft yarn is consistent, reducing the deviation in the flight path of the weft yarn caused by tension fluctuations.

[0041] Subsequently, the loom 1 controls the reed 101 to swing backward, and the reed 101 no longer contacts the rotating rod 405. The first twisting rod 403 elastically rotates and resets, and through friction with the friction rod 406, the friction rod 406 moves forward. At the same time, the elastic slider 402 releases and slides back to reset, and drives the first twisting rod 403 to move forward, and drives the first wedge block 602 to move forward through the vertical rod 601. After the first wedge block 602 moves, it no longer contacts the second wedge block 603, and the second twisting rod 404 slides back to reset. The friction rod 406 slides back to reset under the action of the first twisting rod 403. The sliding shaft of the friction rod 406 causes the rotating rod 405 to rotate back to reset through the through hole of the rotating rod 405. When the elastic slider 402 resets, the locking groove of the elastic slider 402 aligns with the wedge pin 502. The elastic wedge rod 501 releases and slides, causing the wedge pin 502 to fall back to reset, so that the wedge pin 502 is locked back into the locking groove to limit the elastic slider 402.

[0042] Example 2

[0043] like Figures 8-11 As shown, it also includes a tightening mechanism for providing tension to the weft yarn. The tightening mechanism includes a connecting frame 701 mounted on the reed 101. A T-shaped rod 702 is slidably mounted inside the connecting frame 701 in the front-back direction, and a vertical rail 703 located in front of the T-shaped rod 702 is fixedly mounted. A pair of sliding blocks 7021 are slidably mounted on the left side of the T-shaped rod 702. A connecting rod 704 passing through the vertical rail 703 is fixedly mounted on the front side of the sliding blocks 7021. The front end of the connecting rod 704 extends to the front side of the connecting frame 701. A toothed sleeve 705 is slidably mounted on the outer wall of the connecting rod 704 in the front-back direction. A tension spring is provided between the front end of the connecting rod 704 and the inner wall of the toothed sleeve 705.

[0044] The tightening mechanism also includes a fixing block 801 that is fixedly installed inside the loom 1 and cooperates with the T-shaped rod 702. An elastic telescopic rod 802 is fixedly installed between the T-shaped rod 702 and the connecting frame 701. A pair of guide grooves are symmetrically opened on the left side of the inner wall of the connecting frame 701. The guide grooves are V-shaped. Guide rods 803 located in the two guide grooves are fixedly installed on the left side of the two sliding blocks 7021 of the connecting rod 704.

[0045] Initially, the two toothed sleeves 705 are in a far apart state. When the weft yarn is ejected, the right end of the weft yarn passes between the two toothed sleeves 705. When the reed 101 swings forward, it drives the connecting frame 701 to move. The connecting frame 701 drives the T-shaped rod 702 forward through the elastic telescopic rod 802. The T-shaped rod 702 drives the two connecting rods 704 forward through the two sliding blocks 7021. The connecting rods 704 drive the toothed sleeves 705 forward through the tension spring. Subsequently, the T-shaped rod 702 contacts the fixed block 801 and can no longer move. The T-shaped rod 702 drives the two guide rods 803 to stop moving forward through the two sliding blocks 7021. The connecting frame 701 continues to move, causing the elastic telescopic rod 802 to... Extending, the pair of guide grooves of the connecting frame 701 press against the outer walls of the two guide rods 803, causing the two guide rods 803 to slide closer to each other. The guide rods 803 drive the toothed sleeves 705 to move through the sliding block 7021 and the connecting rod 704, causing the two toothed sleeves 705 to move closer to each other. Subsequently, the two toothed sleeves 705 fit together to clamp the weft yarn. The reed 101 continues to move forward to push the weft yarn. The weft yarn is taut under the action of the two toothed sleeves 705 and the reed 101. At this time, the pushing force of the reed 101 on the weft yarn is greater than the tension of the tension spring. Under the action of the weft yarn, the two toothed sleeves 705 slide forward relative to the connecting rod 704, and the tension spring is stretched by the force. This can provide stable tension to the weft yarn and prevent the fabric from being defective due to insufficient weft yarn tension.

[0046] like Figure 9 , Figure 11 and Figure 12 As shown, a pair of rectangular frames 901 are slidably installed inside the vertical rail 703 along the vertical direction. The connecting rod 704 rotates through the rectangular frame 901. A ring 902 is slidably installed inside the rectangular frame 901 and is movably sleeved on the outer wall of the connecting rod 704. A torsion spring is provided between one end of the ring 902 and the inner wall of the rectangular frame 901. A protrusion 903 is fixedly connected to the inner wall of the ring 902. The outer wall of the connecting rod 704 has a guide groove. The guide groove is spiral in shape, and the protrusion 903 is located in the guide groove.

[0047] When the two connecting rods 704 move closer to each other, the connecting rods 704 drive the rectangular frame 901 to slide along the vertical rail 703 through the ring 902. When the telescopic end of the elastic telescopic rod 802 extends, the connecting rod 704 slides backward relative to the connecting frame 701. The protrusion 903 squeezes the guide groove of the connecting rod 704, causing the connecting rod 704 to rotate around the connection point of the sliding block 7021. The connecting rod 704 drives the toothed sleeve 705 to rotate. At this time, the two toothed sleeves 705 rotate in opposite directions. The rotation of the two toothed sleeves 705 can further apply tension to the weft yarn, thereby providing stable tension to the weft yarn. When the weft yarn is taut, the weft yarn causes the guide groove of the connecting rod 704 to apply a reaction force to the protrusion 903 through the toothed sleeve 705. The protrusion 903 slides along the guide groove of the connecting rod 704 under force, and drives the ring 902 to slide within the rectangular frame 901. The torsion spring contracts under force, thereby preventing the weft yarn from breaking due to excessive tension.

[0048] When the reed 101 swings backward, it drives the connecting frame 701 to move synchronously. The elastic telescopic rod 802 retracts, causing the connecting frame 701 to move backward relative to the T-shaped rod 702. The two guide rods 803 first slide horizontally along a pair of guide grooves of the connecting frame 701. At the same time, the torsion spring is released, causing the ring 902 to drive the protrusion 903 to move and reset. When the torsion spring is fully released, the guide groove of the connecting rod 704, under the action of the protrusion 903, causes the connecting rod 704 to drive the toothed sleeve 705 to rotate and reset. At the same time, the tension spring retracts, causing the toothed sleeve 705 to slide and reset relative to the connecting rod 704. Then, the guide rod 803 contacts the corner of the guide groove. Under the action of a pair of guide grooves, the two guide rods 803 slide and reset away from each other, thereby causing the two toothed sleeves 705 to move and reset away from each other. The two toothed sleeves 705 no longer contact the weft yarn.

[0049] This achieves stable control of the weft yarn tension, effectively preventing weft yarn slack and thus preventing fabric defects.

[0050] Although this disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art will understand that various changes in form and detail may be made to this disclosure without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents. Therefore, the scope of this disclosure should not be limited to the above embodiments, but should be defined not only by the appended claims, but also by their equivalents.

Claims

1. A water-jet loom having a stable control structure of weft tension, comprising a loom (1), a reed (101) is arranged in the loom (1), characterized in that: The posture maintaining mechanism comprises an air pump (201) mounted on the loom (1), an air outlet of the air pump (201) is communicated with an air pipe (202), a nozzle (203) for spraying weft is mounted on the loom (1), a rubbing mechanism for rubbing weft is arranged on the loom (1), two pairs of maintaining air pipes (204) in communication with the air pipe (202) are fixedly mounted on the outer wall of the nozzle (203) through a mounting frame, a lifting rod (206) moving up and down is slidingly installed through the outer wall of the air pipe (202), an adjusting rod (207) for moving the lifting rod (206) is arranged on the lower side of the lifting rod (206), the loom (1) has a horizontal slot for limiting the sliding of the adjusting rod (207), through the design of the posture maintaining mechanism, when the reed pushes the weft to the shedding, the lifting rod can be lifted through the special shape of the adjusting rod, so as to control whether the two pairs of maintaining air pipes spray high pressure air flow, preventing the weft inclined to the spraying direction of the nozzle from moving under the influence of the high pressure air flow, when the weft is cut, the weft can be maintained to face the spraying direction of the nozzle under the influence of the high pressure air flow sprayed by the maintaining air pipe, through the design of the rubbing mechanism, the weft can be rubbed, the anti-rebound ability of the weft is enhanced, and the weft is effectively prevented from contacting warp and bending.

2. A water-jet loom having a stable control structure of weft tension according to claim 1, characterized in that: The top of the adjusting rod (207) is composed of a trapezoidal part and a horizontal part.

3. The water-jet loom having the stable control structure of the weft thread tension according to claim 1, wherein: The posture maintaining mechanism further comprises a curved rod (301), one side of the reed (101) is fixedly provided with the curved rod (301), one end of the curved rod (301) is fixedly provided with a convex shaft, one side of the adjusting rod (207) is provided with a through slot (302), and the convex shaft is located in the through slot (302).

4. The water-jet loom having the stable control structure of the weft thread tension according to claim 1, wherein: The rubbing mechanism comprises a support (401) mounted on the loom (1), an elastic sliding block (402) is slidingly installed in the support (401), a first rubbing rod (403) is elastically hinged to one side of the elastic sliding block (402), a second rubbing rod (404) moving up and down and matched with the first rubbing rod (403) is slidingly installed on one side of the support (401), a rotating rod (405) is hinged to the bottom of the support (401), a friction rod (406) for moving the first rubbing rod (403) is slidingly installed on one side of the support (401), a sliding shaft is fixedly installed on one side of the friction rod (406), and the rotating rod (405) has a through hole for limiting the sliding of the sliding shaft.

5. A water-jet loom having a stable control structure of weft tension according to claim 4, characterized in that: The limiting assembly comprises an elastic wedge-shaped rod (501) slidingly installed in the support (401), the elastic wedge-shaped rod (501) is matched with the first rubbing rod (403), a wedge-shaped pin (502) is fixedly installed at the bottom of the elastic wedge-shaped rod (501), the wedge-shaped pin (502) is slidingly connected with the support (401), and the elastic sliding block (402) has a locking groove matched with the wedge-shaped pin (502).

6. A water-jet loom having a stable control structure of weft tension according to claim 4, characterized in that: The vertical rod (601) is fixedly installed on one side of the elastic sliding block (402), one side of the vertical rod (601) is fixedly installed with a first wedge (602), and one side of the second rubbing and twisting rod (404) is fixedly installed with a second wedge (603) matched with the first wedge (602).

7. The water-jet loom having the stable control structure of the weft thread tension according to claim 3, wherein: The tightening mechanism comprises a connecting frame (701) installed on the reed (101), a T-shaped rod (702) is slidably installed in the connecting frame (701) in the front-rear direction, and a vertical rail (703) is fixedly installed, one side of the T-shaped rod (702) is slidably installed with a pair of sliding blocks (7021), one side of the sliding block (7021) is fixedly installed with a connecting rod (704) penetrating through the vertical rail (703), a tooth sleeve (705) is slidably installed on the outer wall of the connecting rod (704), and a tension spring is arranged between one end of the connecting rod (704) and the inner wall of the tooth sleeve (705).

8. A water-jet loom having a stable control structure of weft tension according to claim 7, characterized in that: The tightening mechanism further comprises a fixed block (801) fixedly installed in the loom (1) and matched with the T-shaped rod (702), an elastic telescopic rod (802) is fixedly installed between the T-shaped rod (702) and the connecting frame (701), a pair of guide grooves are symmetrically formed in the connecting frame (701), and a guide rod (803) fixedly installed on the other side of the sliding block (7021) is located in the guide groove.

9. A water-jet loom having a stable control structure of weft tension according to claim 7, characterized in that: A pair of rectangular frames (901) are slidably installed in the vertical rail (703), the connecting rod (704) is rotatably penetrated through the rectangular frame (901), a circular ring (902) movably sleeved on the outer wall of the connecting rod (704) is slidably installed in the rectangular frame (901), a torsional spring is arranged between one end of the circular ring (902) and the inner wall of the rectangular frame (901), the inner wall of the circular ring (902) is fixedly connected with a protruding block (903), the outer wall of the connecting rod (704) has a guide groove, and the protruding block (903) is located in the guide groove.

10. A water-jet loom having a stable control structure of weft tension according to claim 9, characterized in that: The guide groove of the connecting rod (704) is spiral-shaped.

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