Water jet loom with weft yarn tension stable control structure

Abstract

The invention relates to the technical field of water-jet looms, in particular to a water-jet loom with a weft yarn tension stable control structure. Comprising a weaving machine, a reed is arranged in the weaving machine, the posture keeping mechanism comprises an air pump installed on the weaving machine, and the output end of the air pump is communicated with an air conveying pipe. Through the design of the posture keeping mechanism, when a reed pushes weft yarn to a cloth fell, the lifting rod can ascend and descend through the special shape of the adjusting rod, so that whether the two sets of keeping air pipes spray high-pressure air flow or not is controlled, and the situation that the weft yarn inclined to the spraying direction of the nozzle moves due to the influence of the high-pressure air flow is prevented; the weft yarns can be kept in the spraying direction towards the nozzle under the influence of the high-pressure airflow by keeping the air pipe spraying out the high-pressure airflow, the weft yarns can be rolled through the design of the rolling mechanism, the resilience resistance of the weft yarns is enhanced, and the situation that the weft yarns are in contact with warp yarns and are bent is effectively prevented.

Description

Technical Field

[0001] The present invention relates to the technical field of water-jet looms, and particularly to a water-jet loom with a stable control structure for weft yarn tension. Background Art

[0002] A water-jet loom is a shuttleless loom that uses a high-speed water jet to draw the weft yarn through the shed, and has the advantages of high efficiency, stability and energy saving. In modern textile industry, the water-jet loom has become an indispensable part.

[0003] Since the movement of the weft yarn completely depends on the control of the high-speed water jet, the tension of the weft yarn cannot be guaranteed, and the situation of weft yarn relaxation is likely to occur, resulting in defects in the fabric. After the weft yarn contacts the reed, the attitude of the weft yarn will be affected. When the weft yarn is cut, the weft yarn will have elastic contraction or distortion. When the weft yarn is ejected next time, the contraction and distortion of the weft yarn will cause the uncertainty of its initial position. When the weft yarn is ejected, the tension distribution of the weft yarn is uneven, directly affecting the flight trajectory of the water flow traction, and the situation of the warp yarn and the weft yarn bending occurs. Summary of the Invention

[0004] In order to overcome the shortcomings in the prior art, the present invention provides a water-jet loom with a stable control structure for weft yarn tension.

[0005] The technical implementation scheme of the present invention is as follows: It includes a loom, a reed is arranged inside the loom, and further includes an attitude maintaining mechanism. The attitude maintaining mechanism includes an air pump installed on the loom. The output end of the air pump is communicated with an air delivery pipe. A nozzle for ejecting the weft yarn is installed on the loom. A twisting mechanism for twisting the weft yarn is arranged on the loom. Two pairs of holding air pipes communicated with the air delivery pipe are fixedly installed on the outer wall of the nozzle through a mounting frame. The outer wall of the air delivery pipe is slidably installed in a penetrating manner with a lifting rod moving in the up and down direction. A regulating rod for making it move is arranged on the lower side of the lifting rod. The loom has a horizontal groove for sliding and limiting the regulating rod.

[0006] As a further preferred scheme, the top of the regulating rod is composed of a trapezoidal part and a horizontal part.

[0007] As a further preferred scheme, the attitude maintaining mechanism further includes a curved rod. The curved rod is fixedly installed on one side of the reed. A convex shaft is fixedly installed at one end of the curved rod. A through groove is arranged on one side of the regulating rod, and the convex shaft is located in the through groove.

[0008] As a further preferred solution, the rolling mechanism includes a bracket installed on the loom. An elastic slider is slidably installed inside the bracket. One side of the elastic slider is elastically hinged to a first rolling rod. One side of the bracket is elastically slidably installed with a second rolling rod that moves up and down and cooperates with the first rolling rod. The bottom of the bracket is hinged with a rotating rod. One side of the bracket is slidably installed with a friction rod for the movement of the first rolling rod. A sliding shaft is fixedly installed on one side of the friction rod. The rotating rod has a through hole for sliding and limiting the sliding shaft.

[0009] As a further preferred solution, it further includes a limiting component. The limiting component includes an elastic wedge-shaped rod slidably installed inside the bracket. The elastic wedge-shaped rod cooperates with the first rolling rod. A wedge-shaped pin is fixedly installed at the bottom of the elastic wedge-shaped rod. The wedge-shaped pin is slidably connected to the bracket. The elastic slider has a locking groove that cooperates with the wedge-shaped pin.

[0010] As a further preferred solution, it further includes a vertical rod. A vertical rod is fixedly installed on one side of the elastic slider. A first wedge block is fixedly installed on one side of the vertical rod. A second wedge block that cooperates with the first wedge block is fixedly installed on one side of the second rolling rod.

[0011] As a further preferred solution, it further includes a tightening mechanism. The tightening mechanism includes a connecting frame installed on the reed. A T-shaped rod is slidably installed in the connecting frame in the front-back direction, and a vertical rail is fixedly installed. A pair of sliding blocks are slidably installed on one side of the T-shaped rod. A connecting rod passing through the vertical rail is fixedly installed on one side of the sliding block. A tooth sleeve is slidably installed on the outer wall of the connecting rod. A tension spring is arranged between one end of the connecting rod and the inner wall of the tooth sleeve.

[0012] As a further preferred solution, the tightening mechanism further includes a fixed block fixedly installed inside the loom and cooperating 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 solution, a pair of rectangular frames are slidably installed inside the vertical rail. The connecting rod rotatably passes through the rectangular frames. A ring that is movably sleeved on the outer wall of the connecting rod is slidably installed inside the rectangular frames. A torsion spring is arranged between one end of the ring and the inner wall of the rectangular frame. A convex block is fixedly connected to the inner wall of the ring. The outer wall of the connecting rod has a guide groove. The convex block is located in the guide groove.

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

[0015] The present invention has the following advantages:

[0016] 1. Through the design of the attitude maintaining mechanism of the present invention, when the reed pushes the weft yarn towards the fell of the cloth, due to the special shape of the adjusting rod, the lifting rod can be lifted and lowered, thereby controlling whether the two groups of maintaining air ducts spray high-pressure air flow, preventing the weft yarn inclined to the spray direction of the nozzle from moving under the influence of the high-pressure air flow. When the weft yarn is cut, by spraying high-pressure air flow through the maintaining air ducts, the weft yarn can be kept in the spray direction towards the nozzle under the influence of the high-pressure air flow. Through the design of the twisting mechanism, the weft yarn can be twisted, enhancing the anti-rebound ability of the weft yarn and effectively preventing the situation where the weft yarn contacts the warp yarn and bends.

[0017] 2. Through the design of the limiting component of the present invention, when the friction rod slides backward, the elastic slider is limited by the wedge-shaped pin, enabling the first twisting rod to rotate first until it cannot rotate, and then enabling the elastic slider to slide backward, thereby ensuring the twisting amount of the weft yarn by the first twisting rod.

[0018] 3. Through the design of the tightening mechanism of the present invention, by applying a pulling force to the weft yarn through two tooth sleeves, a stable tension can be provided for the weft yarn. When the weft yarn is tightened, the extension of the tension spring can prevent the pulling force applied by the tooth sleeve to the weft yarn from being too large, resulting in the breakage of the weft yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the whole of the present invention;

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

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

[0022] Figure 4 is a schematic structural diagram of the twisting mechanism of the present invention;

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

[0024] Figure 6 is an installation schematic diagram at the elastic wedge-shaped rod of the present invention;

[0025] Figure 7 is an installation schematic diagram at the wedge-shaped pin of the present invention;

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

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

[0028] Figure 10 Schematic installation diagram at the guide rod of the present invention;

[0029] Figure 11 Schematic installation diagram at the circular ring of the present invention;

[0030] Figure 12 Schematic installation diagram at the bump of the present invention.

[0031] Wherein: 1 - loom, 101 - reed, 201 - air pump, 202 - air delivery pipe, 203 - nozzle, 204 - air retaining duct, 206 - lifting rod, 207 - adjusting rod, 301 - curved rod, 302 - through groove, 401 - bracket, 402 - elastic slider, 403 - first kneading rod, 404 - second kneading 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 - gear sleeve, 801 - fixed block, 802 - elastic telescopic rod, 803 - guide rod, 901 - rectangular frame, 902 - circular ring, 903 - bump. Detailed implementation manners

[0032] The following further describes the present invention in conjunction with specific embodiments. It should also be noted that unless otherwise clearly defined and limited, terms such as: setting, installation, connection, and coupling should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0033] Embodiment 1

[0034] A water-jet loom with a weft tension stable control structure, as Figures 1-3As shown, it includes a loom 1. Inside the loom 1, there is a reed 101 for pushing the weft yarn. It also includes an attitude holding mechanism for controlling the attitude of the weft yarn. The attitude holding mechanism includes an air pump 201 installed on the loom 1. The output end of the air pump 201 is connected to an air delivery pipe 202. A nozzle 203 for ejecting the weft yarn is installed on the loom 1. A twisting mechanism for twisting the weft yarn is provided on the loom 1. By twisting the weft yarn, the anti-rebound ability of the weft yarn can be enhanced. Two pairs of holding air pipes 204 with different lengths and connected to the air delivery pipe 202 are fixedly installed on the outer wall of the nozzle 203 through a mounting bracket. A lifting rod 206 moving in the up and down direction is slidably installed through the outer wall of the air delivery pipe 202. The lifting rod 206 can control whether the air delivery pipe 202 is connected through lifting. A regulating rod 207 for moving it up and down is provided on the lower side of the lifting rod 206. The loom 1 has a horizontal groove for sliding and limiting the regulating rod 207. The top of the regulating rod 207 consists of a trapezoidal part and a horizontal part, and the trapezoidal part is located on the front side of the horizontal plane.

[0035] As Figure 2 with Figure 3 As shown, the attitude holding mechanism further includes a curved rod 301. The curved rod 301 is fixedly installed on the left part of the rear side of the reed 101. A convex shaft is fixedly installed at the left end of the curved rod 301. A through groove 302 is provided on one side of the regulating rod 207. The convex shaft is matched with the through groove 302.

[0036] Initially, there is a gap between the lifting rod 206 and the inner wall of the air delivery pipe 202. The air pump 201 sprays high-pressure air through the air delivery pipe 202 and the holding air duct 204 in the direction of spraying weft yarn by the nozzle 203. First, the weft yarn is sprayed through the nozzle 203, and then the loom 1 controls the reed 101 to swing forward, so that the reed 101 pushes the weft yarn towards the fell of the cloth. After the weft yarn is pushed, it is inclined to the spraying direction of the nozzle 203. At the same time, the reed 101 drives the curved rod 301 to move. The convex shaft of the curved rod 301 squeezes the inner wall of the through groove 302, 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. Subsequently, the lifting rod 206 contacts the horizontal plane of the trapezoidal part of the adjusting rod 207. After the lifting rod 206 slides, it seals the air delivery pipe 202, so that the two groups of holding air ducts 204 no longer spray high-pressure air. Thereby, it can prevent the weft yarn inclined to the spraying direction of the nozzle 203 from being distorted under the influence of the high-pressure air. Subsequently, the cutting component in the loom 1 cuts the weft yarn (the cutting component is a prior art and will not be elaborated here). At the same time, the lifting rod 206 passes over the trapezoidal part of the adjusting rod 207 and contacts the horizontal part of the adjusting rod 207. The lifting rod 206 descends and resets, so that the two groups of holding air ducts 204 spray high-pressure air again. It should be added that when the nozzle 203 sprays the weft yarn, the weft yarn will be subjected to great tension, and the moving speed of the reed 101 is extremely fast. When the weft yarn is cut, the tension on the remaining weft yarn will suddenly decrease, resulting in elastic contraction or distortion of the weft yarn. Since the weft yarn is wetted by water flow, after the weft yarn is elastically contracted or distorted, it will adhere to the nozzle 203 or other parts of the loom 1, resulting in an unfixed initial position of the weft yarn and uneven tension distribution of the weft yarn when the nozzle 203 sprays the weft yarn next time, and the situation of contacting the warp yarn or the weft yarn bending occurs. It should be noted that the two groups of holding air ducts 204 spray high-pressure air again at the same time as the weft yarn is cut. After the tension of the weft yarn disappears, the weft yarn can maintain a straight state under the influence of the high-pressure air sprayed by the holding air ducts 204, thereby preventing the above problems from occurring.

[0037] As Figures 4-6 shown, the twisting mechanism includes a bracket 401 installed on the loom 1. An elastic slider 402 is slidably installed horizontally inside the bracket 401. A first twisting rod 403 is elastically hinged to the left side of the elastic slider 402. A second twisting rod 404 that moves up and down and cooperates with the first twisting rod 403 is slidably installed elastically 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 the movement of the first twisting rod 403 is slidably installed 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 installed at the top left of the friction rod 406. The rotating rod 405 has a through hole for sliding and limiting the sliding shaft.

[0038] As Figure 5 With Figure 6As shown, it further includes a limiting component. The limiting component includes an elastic wedge-shaped rod 501 slidably mounted in the bracket 401 in the up-down direction. The elastic wedge-shaped rod 501 cooperates with the first twisting rod 403. When the first twisting rod 403 rotates, it can lift the elastic wedge-shaped rod 501 upward. A wedge-shaped pin 502 slidably connected to the bracket 401 is fixedly installed at the bottom of the elastic wedge-shaped rod 501. The top of the elastic slider 402 has a locking groove that cooperates with the wedge-shaped pin 502.

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

[0040] Initially, the wedge-shaped pin 502 is stuck in the locking groove of the elastic slider 402 to limit the elastic slider 402. Before the weft yarn is cut, the reed 101 swings forward and pushes the rotating rod 405, causing the rotating rod 405 to rotate around the connection point of the bracket 401, and squeezing the sliding shaft of the friction rod 406 through the through hole on it, causing the friction rod 406 to slide backward. At this time, the weft yarn contacts the top of the second twisting rod 404 under the action of the reed 101. Due to the extremely high tension on the weft yarn, the contact between the weft yarn and the second twisting rod 404 will not cause the weft yarn to be distorted. 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. Subsequently, the first twisting rod 403 squeezes the elastic wedge-shaped rod 501, causing the elastic wedge-shaped rod 501 to drive the wedge-shaped pin 502 to lift out of 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 in a horizontal state and no longer rotates. The first twisting rod 403 and the second twisting rod 404 cooperate to clamp the weft yarn. The friction rod 406 continues to slide backward and drives the elastic slider 402 to slide backward through the first twisting rod 403. The first twisting rod 403 twists the weft yarn by cooperating with the second twisting rod 404, thereby enhancing the anti-rebound ability of the weft yarn. While the elastic slider 402 slides, it drives the first wedge 602 to move backward through the vertical rod 601. After the first wedge 602 moves, it contacts the second wedge 603. The second wedge 603 drives the second twisting rod 404 to descend under the action of the first wedge 602. After the second twisting rod 404 descends, it no longer contacts the weft yarn. The slightly rebounded weft yarn after kneading, combined with the high-pressure air flow ejected from the air duct 204, can further prevent the weft yarn from contacting the warp yarn or bending. By quickly restoring the weft yarn to a straight state, it can significantly change the flying attitude of the weft yarn when the weft yarn is ejected again. When the nozzle 203 ejects the weft yarn, the initial tension received by the weft yarn can be made consistent, reducing the flight path deviation 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 its original position, driving the first twisting rod 403 forward, and driving the first wedge block 602 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 its original position. The friction rod 406 slides back to its original position under the action of the first twisting rod 403. The sliding shaft of the friction rod 406 rotates the rotating rod 405 back to its original position through the through hole of the rotating rod 405. When the elastic slider 402 returns to its original position, the locking groove of the elastic slider 402 aligns with the wedge-shaped pin 502, and the elastic wedge-shaped rod 501 releases and slides to drive the wedge-shaped pin 502 to drop back to its original position, so that the wedge-shaped pin 502 is inserted into the locking groove again to limit the elastic slider 402.

[0042] Embodiment 2

[0043] As Figures 8-11 shown, it further includes a tightening mechanism for providing tension to the weft yarn. The tightening mechanism includes 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-back direction, and a vertical rail 703 located on the front side of the T-shaped rod 702 is fixedly installed. A pair of sliding blocks 7021 are slidably installed on the left side of the T-shaped rod 702. A connecting rod 704 passing through the vertical rail 703 is fixedly installed on the front side of the sliding block 7021. The front end of the connecting rod 704 extends to the front side of the connecting frame 701. A tooth sleeve 705 is slidably installed 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 tooth sleeve 705.

[0044] The tightening mechanism further includes a fixed block 801 fixedly installed in the loom 1 and cooperating 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 sides of the two sliding blocks 7021 of the connecting rod 704.

[0045] Initially, the two tooth sleeves 705 are in a separated state. After the weft yarn is ejected, the right end of the weft yarn passes through between the two tooth 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 to move forward through the elastic telescopic rod 802. The T-shaped rod 702 drives the two connecting rods 704 to move forward through the two sliding blocks 7021. The connecting rods 704 drive the tooth sleeves 705 to move forward through the tension springs. Subsequently, the T-shaped rod 702 contacts the fixed block 801, and the T-shaped rod 702 cannot continue to 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 extend. The pair of guide grooves of the connecting frame 701 squeeze 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 tooth sleeves 705 to move through the sliding blocks 7021 and the connecting rods 704, causing the two tooth sleeves 705 to move closer to each other. Subsequently, the two tooth 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 tightened under the action of the two tooth sleeves 705 and the reed 101. At this time, the thrust of the weft yarn on the reed 101 is greater than the tension of the tension spring. The two tooth sleeves 705 slide forward relative to the connecting rod 704 under the action of the weft yarn, and the tension spring is stretched. Thus, a stable tension can be provided to the weft yarn to prevent defects in the fabric caused by insufficient weft yarn tension.

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

[0047] When the two connecting rods 704 move closer to each other, the connecting rod 704 drives the rectangular frame 901 to slide along the vertical rail 703 through the circular 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 convex block 903 presses against the guiding 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 gear sleeve 705 to rotate. At this time, the two gear sleeves 705 rotate in opposite directions. The rotation of the two gear sleeves 705 can further apply a pulling force to the weft yarn, thereby providing a stable tension for the weft yarn. When the weft yarn is tightened, the weft yarn makes the guiding groove of the connecting rod 704 apply a reaction force to the convex block 903 through the gear sleeve 705. The convex block 903 slides along the guiding groove of the connecting rod 704 under the force and drives the circular ring 902 to slide within the rectangular frame 901, and the torsion spring contracts under the force, thereby preventing the weft yarn from breaking due to excessive tension.

[0048] When the reed 101 swings backward, the reed 101 drives the connecting frame 701 to move synchronously. The elastic telescopic rod 802 contracts, 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 releases, causing the circular ring 902 to drive the convex block 903 to move back to its original position. When the torsion spring is completely released, the guiding groove of the connecting rod 704 causes the connecting rod 704 to drive the gear sleeve 705 to rotate back to its original position under the action of the convex block 903. At the same time, the tension spring contracts, driving the gear sleeve 705 to slide back to its original position relative to the connecting rod 704. Subsequently, the guide rods 803 contact the corners of the guide grooves, and the two guide rods 803 slide away from each other and return to their original positions under the action of a pair of guide grooves, thereby causing the two gear sleeves 705 to move away from each other and return to their original positions, and the two gear sleeves 705 no longer contact the weft yarn.

[0049] Thus, the stable control of the tension of the weft yarn is completed, effectively preventing the situation of weft yarn slack, which may cause defects in the fabric.

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

Claims

1. A water jet loom with a weft yarn tension stable control structure, comprising a loom (1), wherein a reed (101) is arranged inside the loom (1), and it is characterized in that: It further includes an attitude maintaining mechanism. The attitude maintaining mechanism includes an air pump (201) installed on the loom (1). The output end of the air pump (201) is communicated with an air delivery pipe (202). A nozzle (203) for ejecting weft yarn is installed on the loom (1). A twisting mechanism for twisting the weft yarn is arranged on the loom (1). Two pairs of holding air pipes (204) communicated with the air delivery pipe (202) are fixedly installed on the outer wall of the nozzle (203) through a mounting frame. A lifting rod (206) moving in the up and down direction is slidably installed through the outer wall of the air delivery pipe (202). A regulating rod (207) for enabling its movement is arranged on the lower side of the lifting rod (206). The loom (1) has a horizontal groove for sliding and limiting the regulating rod (207).

2. The water-jet loom with a weft yarn tension stable control structure according to claim 1, characterized in that: The top of the regulating rod (207) consists of a trapezoidal part and a horizontal part.

3. A water jet loom having a weft tension stable control structure according to claim 1, characterized in that: The attitude maintaining mechanism further includes a curved rod (301). The curved rod (301) is fixedly installed on one side of the reed (101). A convex shaft is fixedly installed at one end of the curved rod (301). A through groove (302) is arranged on one side of the regulating rod (207). The convex shaft is located in the through groove (302).

4. A water jet loom with a weft yarn tension stable control structure according to claim 1, characterized in that: The twisting mechanism includes a bracket (401) installed on the loom (1). An elastic slider (402) is slidably installed in the bracket (401). A first twisting rod (403) is elastically hinged to one side of the elastic slider (402). A second twisting rod (404) moving up and down and cooperating with the first twisting rod (403) is elastically slidably installed on one side of the bracket (401). A rotating rod (405) is hinged to the bottom of the bracket (401). A friction rod (406) for allowing the first twisting rod (403) to move is slidably installed on one side of the bracket (401). A sliding shaft is fixedly installed on one side of the friction rod (406). The rotating rod (405) has a through hole for sliding and limiting the sliding shaft.

5. The water-jet loom with a weft yarn tension stable control structure according to claim 4, characterized in that: It further includes a limiting component. The limiting component includes an elastic wedge-shaped rod (501) slidably installed in the bracket (401). The elastic wedge-shaped rod (501) cooperates with the first twisting 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 slidably connected with the bracket (401). A locking groove cooperating with the wedge-shaped pin (502) is arranged on the elastic slider (402).

6. A water jet loom with a weft yarn tension stable control structure according to claim 4, characterized in that: It further includes a vertical rod (601). The vertical rod (601) is fixedly installed on one side of the elastic slider (402). A first wedge block (602) is fixedly installed on one side of the vertical rod (601). A second wedge block (603) cooperating with the first wedge block (602) is fixedly installed on one side of the second twisting rod (404).

7. A water-jet loom with a weft yarn tension stable control structure according to claim 3, characterized in that: It further includes a tightening mechanism, which includes 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-back direction, and a vertical rail (703) is fixedly installed. A pair of sliding blocks (7021) are slidably installed on one side of the T-shaped rod (702). One side of the sliding block (7021) is fixedly installed with a connecting rod (704) passing through the vertical rail (703). A toothed sleeve (705) is slidably installed on the outer wall of the connecting rod (704). A tension spring is arranged between one end of the connecting rod (704) and the inner wall of the toothed sleeve (705).

8. A water jet loom with a weft tension stable control structure according to claim 7, characterized in that: The tightening mechanism further includes a fixed block (801) fixedly installed in the loom (1) and cooperating 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). The other side of the sliding block (7021) is fixedly installed with a guide rod (803) located in the guide groove.

9. A water-jet loom with a weft yarn tension stable control structure 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) rotatably penetrates through the rectangular frame (901). A ring (902) that is movably sleeved on the outer wall of the connecting rod (704) is slidably installed in the rectangular frame (901). A torsion spring is arranged between one end of the ring (902) and the inner wall of the rectangular frame (901). A convex block (903) is fixedly connected to the inner wall of the ring (902). A guide groove is formed on the outer wall of the connecting rod (704), and the convex block (903) is located in the guide groove.

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

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