Air-jet loom capable of reducing length of slitter edge yarn of air-jet loom and use method of air-jet loom

Abstract

The invention relates to an air-jet loom capable of reducing the length of waste selvage yarn of the air-jet loom. The air-jet loom comprises a loom body mechanism. The loom body mechanism comprises a bottom frame, a supporting column, a left side plate, a right side plate, a warp tooth top beam, a warp tooth air cylinder, a front warp tooth plate, a rear warp tooth plate, a comb tooth base, a comb tooth groove, a comb tooth frame, comb teeth and a gray fabric supporting plate. The supporting columns are fixedly arranged on the two sides of the bottom frame respectively, a left side plate and a right side plate are fixedly arranged on the supporting columns on the two sides respectively, the passing tooth top beam is fixedly arranged on the tops of the left side plate and the right side plate, and the front passing tooth plates and the rear passing tooth plates are fixedly arranged on the top of the left side plate and the top of the right side plate respectively through the passing tooth air cylinders. According to the air jet loom, the weft insertion speed can be effectively increased, the weft insertion rate is increased, and the material consumption in the weaving process is reduced, so that the waste edge yarn length of the air jet loom is reduced, and the loss amount is reduced; the phenomenon of concave collapse caused by the gravity of the weft is avoided, and the straightness of the weft is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air-jet looms, in particular to an air-jet loom for reducing the length of waste edge yarns of an air-jet loom and a using method thereof. Background Art

[0002] An air-jet loom uses the ejected compressed air flow to traction the weft yarn and bring the weft yarn across the shed. The biggest feature of an air-jet loom is its high speed and high labor productivity, and it is suitable for the production of plain and figured fabrics, fine-count high-density fabrics and fabrics with large batches.

[0003] An air-jet loom is a shuttleless loom, and its working principle is to generate frictional traction force on the weft yarn through the ejected compressed air flow, and bring the weft yarn across the shed, so as to achieve the purpose of weft insertion. Compared with traditional shuttle looms, an air-jet loom does not require a shuttle, so it can achieve high-speed and high-yield production.

[0004] An air-jet loom has the characteristics of high speed, high yield, strong variety adaptability, etc. Among various shuttleless looms, the air-jet loom has the highest speed. Due to its reasonable weft insertion method, high weft insertion rate, simple, safe operation, it has a wide variety of adaptability, less consumption of machine materials, high efficiency, high speed, and low noise.

[0005] Early air-jet looms could only produce narrow-width fabrics, with low loom speed and poor fabric quality, and could only produce single-color and simple ordinary plain fabrics. However, with the continuous progress of technology, modern new air-jet looms have been greatly improved in terms of speed, automatic monitoring level, product quality, variety adaptability, etc., and have become the fastest-developing model among shuttleless looms.

[0006] With the continuous progress of technology, the development trend of air-jet looms will be more intelligent, automated, and digital. Future air-jet looms will pay more attention to energy conservation and emission reduction, improve production efficiency and product quality, and will also pay more attention to humanized design to improve the convenience and safety of operation.

[0007] In short, as a high-speed and high-yield weaving tool, an air-jet loom has broad application prospects and market demands. It is believed that in the near future, air-jet looms will become the mainstream equipment in the weaving industry.

[0008] The generation of waste edge yarns is mainly due to the introduction and cutting operations of the weft yarn during the weaving process. During the weaving process, the weft yarn needs to be introduced into the loom and woven, and after completion, it will be cut to form waste edge yarns. These waste edge yarns are usually regarded as waste for disposal. There are various ways to handle waste selvage yarn. Some enterprises incinerate it as garbage, while others use it as a filling material. For example, some enterprises in Cangnan County, Wenzhou, Zhejiang, fade, cut, and loosen the waste selvage yarn into fibrous form, and then process it into yarn using the spinning method of cotton spinning coarse yarn, which is mainly used to produce low-grade textiles such as mops and wrapper cloth. In addition, there are also some studies exploring how to reduce the generation amount of waste selvage yarn or reuse it, but the technical difficulty is relatively high and it has not been widely applied.

[0009] As disclosed in the patent application No. 202111259081.3, a jet loom for reducing the length of waste selvage yarn of a jet loom is provided, including a jet loom body. A transmission roller is rotatably connected to the surface of the jet loom body. A reed body is fixedly connected to the surface of the jet loom body. An observation mechanism is fixedly arranged on one side of the jet loom body. A stretching mechanism is fixedly arranged on the surface of the jet loom body. The stretching mechanism is movably and cooperatively connected with the reed body. A finishing mechanism is fixedly arranged inside the observation mechanism. Compared with the existing technology, by turning the second handle of the knob, the second handle drives the double-headed screw to rotate. While the double-headed screw rotates, the guide block moves vertically. While the guide block moves, it drives the pressing plate and the cutter body to move vertically. The two pressing plates clamp and press the weft yarn inside the weft detector body. The weft yarn clamped by the two pressing plates is cut off by the cutter body, thus completing the cutting work of the weft yarn, and effectively improving the textile efficiency of the fabric.

[0010] However, current jet looms generally have problems such as low weft insertion speed, low weft insertion rate, more material consumption during the weaving process, long length of waste selvage yarn of the jet loom, and large loss amount; the phenomenon of middle concave and collapse caused by the self-gravity of the weft yarn, and low straightness of the weft yarn, resulting in poor weft insertion stability and low product quality; low cutting speed of the scissors, resulting in low production efficiency, and weak durability of the scissors, unable to work stably for a long time, leading to production interruption caused by frequent replacement of the scissor blades; the phenomenon that the length of waste selvage yarn increases often due to the deviation of the belt direction, resulting in the inclination of the cloth running, and the phenomenon that the gray cloth gets fuzzed due to the adhesion between the weaving and the belt, resulting in low product quality. Summary of the Invention

[0011] The technical problem to be solved by the present invention is to increase the weft insertion speed, increase the weft insertion rate, reduce the material consumption during the weaving process, thereby reducing the length of the waste edge yarn of the air-jet loom and reducing the loss amount; to solve the phenomenon of concave and sag caused by the self-weight of the weft yarn, improve the straightness of the weft yarn, improve the weft insertion stability, improve the product quality, increase the scissor cutting speed, improve the production efficiency, increase the durability of the scissors, so that they can work stably for a long time and avoid production interruption caused by frequent replacement of the scissor blades; to solve the phenomenon of increased waste edge yarn length caused by the deviation of the belt direction resulting in the inclination of the cloth running, and the phenomenon of the gray cloth fluffing caused by the adhesion between the weaving and the belt, and improve the low product quality.

[0012] To solve the above technical problems, the present invention provides an air-jet loom for reducing the length of the waste edge yarn of the air-jet loom, which includes a loom main body mechanism. The loom main body mechanism includes a chassis, support columns, a left side plate, a right side plate, a warp tooth top beam, a warp tooth cylinder, a front warp tooth plate, a rear warp tooth plate, a comb tooth seat, a comb tooth groove, a comb tooth frame, comb teeth, and a support gray cloth plate; there are multiple groups of support columns, which are respectively fixedly arranged on both sides of the chassis. A left side plate and a right side plate are respectively fixedly arranged on the two sides of the support columns. The warp tooth top beam is fixedly arranged on the tops of the left side plate and the right side plate. There are multiple groups of the front warp tooth plate and the rear warp tooth plate, which are respectively fixedly arranged on the warp tooth top beam through multiple groups of warp tooth cylinders. The comb tooth seat is movably arranged between the left side plate and the right side plate and swings axially. A comb tooth groove is formed on the comb tooth seat. The comb tooth frame is fixedly arranged in the comb tooth groove. There are multiple groups of comb teeth, which are evenly fixedly arranged in the comb tooth frame; the support gray cloth plate is fixedly arranged between the left side plate and the right side plate, on the side of the comb tooth seat away from the front warp tooth plate. A precise weft injection mechanism for air-jet weft insertion is fixedly arranged on the loom main body mechanism; A cam cutting mechanism for cutting the weft yarn is fixedly arranged on the loom main body mechanism.

[0013] Preferably, the precise weft injection mechanism includes a bottom plate, a motor fixing plate, a bearing seat, a guide rail, a lead screw, a precise control motor, a nut seat, a weft injection air cylinder, an air inlet pipe, a weft inlet device, a booster pipe, and a jet pipe; the bottom plate is fixedly arranged at one end of the comb tooth seat. The motor fixing plate is fixedly arranged on one side of the bottom plate. The bearing seat is fixedly arranged on the bottom plate. The precise control motor is fixedly arranged on the side of the motor fixing plate away from the bearing seat. There are two groups of guide rails, which are arranged in parallel on both sides of the bottom plate. The lead screw is movably sleeved in the bearing seat, and one end of it is fixedly connected to the shaft end of the precise control motor. The nut seat is movably arranged on the lead screw through a lead screw nut. The weft injection air cylinder is fixedly arranged on the nut seat. Multiple air inlet pipes are fixedly arranged at one end of it, and a weft inlet device is fixedly arranged at the other end. A booster pipe is fixedly arranged on the side of the weft inlet device away from the weft injection air cylinder, and a jet pipe is fixedly arranged along the end of the booster pipe; Preferably, the fine control weft injection mechanism further includes a guide inclined plane, an auxiliary air injection seat, and an auxiliary nozzle; a guide inclined plane is provided on the comb tooth seat, multiple groups of auxiliary air injection seats are provided, and are uniformly and fixedly arranged on the guide inclined plane, and an auxiliary nozzle is fixedly arranged on each group of auxiliary air injection seats; Preferably, the cam cutting mechanism includes a scissor positioning seat, a scissor fixing seat, a bearing support plate, linear bearings, sliding rods, a blade fixing seat, a cam motor seat, a cam motor, a rotating cam, a connecting rod, a left scissor blade, a right scissor blade, a fastening pull groove, a guide hole, a pulling seat, a guide short shaft, a pulling short pin, a positioning block, and a positioning sliding groove; the scissor fixing seat is fixedly arranged on the scissor positioning seat, the bearing support plate is fixedly connected to the scissor fixing seat, multiple groups of linear bearings are provided and are uniformly and fixedly arranged on the bearing support plate, multiple groups of sliding rods are provided and are movably arranged in the linear bearings, both ends of the blade fixing seat are fixedly connected to multiple groups of the sliding rods, the cam motor seat is fixedly arranged on the bearing support plate, the cam motor is fixedly arranged on the cam motor seat, the rotating cam is fixedly arranged at the output shaft end of the cam motor, the left scissor blade and the right scissor blade are movably arranged on the blade fixing seat through a shaft, symmetric fastening pull grooves are provided at the tails of the left scissor blade and the right scissor blade, guide holes are provided on both sides of the blade fixing seat, the pulling seat is movably arranged on the blade fixing seat through the cooperation of the guide short shaft and the guide hole, two groups of pulling short pins are fixedly arranged on the pulling seat and are buckled in the fastening pull grooves provided on the left scissor blade and the right scissor blade, positioning blocks are fixedly arranged on both sides of the blade fixing seat, and positioning sliding grooves are provided on both sides of the pulling seat and are in sliding fit with the positioning blocks; one end of the connecting rod is movably arranged on the rotating cam, and the other end is movably hinged to the pulling seat. Two groups of the cam cutting mechanisms are provided and are respectively fixedly arranged on the inner walls of the left side plate and the right side plate through the scissor positioning seat; Preferably, the air-jet loom for reducing the length of the waste edge yarn of the air-jet loom further includes a cloth edge guiding and pressing mechanism. The cloth edge guiding and pressing mechanism includes a fixed sliding seat, a guiding sliding rod, a sliding linear bearing, a sliding seat, a runner seat, a driving runner, a driven runner, an end cover plate, a belt, a runner motor seat, a runner motor, a cylinder pushing seat, a cylinder top plate, and a pressing cylinder. The fixed sliding seat is fixedly arranged on the supporting fabric plate. A plurality of groups of guiding sliding rods are arranged and fixedly arranged on the fixed sliding seat. A plurality of groups of sliding linear bearings are arranged and respectively movably arranged on the plurality of groups of guiding sliding rods. The sliding seat is fixedly connected with the plurality of groups of sliding linear bearings. Two groups of runner seats are arranged and respectively fixedly arranged on the fixed sliding seat and the sliding seat, arranged in the same direction. On each group of runner seats, a driving runner and a driven runner are movably arranged, arranged in parallel, and supported from the other direction by the end cover plate, symmetrically arranged with the runner seat. A belt is movably arranged on the driving runner and the driven runner. Two groups of runner motor seats are arranged and respectively fixedly arranged on the two groups of runner seats. On each group of runner motor seats, a runner motor is fixedly arranged, and its output shaft is fixedly connected with the driving runner. The cylinder top plate is fixedly arranged on the top of the guiding sliding rod. The pressing cylinder is fixedly arranged on the top of the cylinder top plate. One end of the cylinder pushing seat is fixedly arranged on the sliding seat, and the other end is fixedly connected with the output of the pressing cylinder. Preferably, the cloth edge guiding and pressing mechanism further includes a downward pressing limiter and a shaft encoder. The downward pressing limiter is fixedly arranged on the cylinder top plate. The shaft encoder is fixedly arranged at one end of the lower group of driving runners away from the runner motor. Preferably, the cloth edge guiding and pressing mechanism further includes an adjusting tensioning groove, a tensioning set screw, a supporting angle plate, and a conforming guide plate. Adjusting tensioning grooves are formed on one side of the runner seat and the end cover plate close to the driven runner and are fixed by the tensioning set screws. The supporting angle plate is fixedly arranged on the lower group of end cover plates. The conforming guide plate is fixedly arranged on the supporting angle plate and is tangent to the belt. Preferably, the air-jet loom for reducing the length of waste selvage yarn further includes a cloth edge pressing mechanism, which includes a pressing cross beam, a supporting pressing plate, a top connecting rod seat, a pressing cylinder, a top hinge shaft, a main hinge rod, a secondary hinge rod, an intermediate connecting rod, a secondary connecting rod, a pressing plate seat, a pressing plate hinge shaft, and a knife-shaped pressing plate. The pressing cross beam is fixedly arranged on the left side plate and the right side plate, on the top of the supporting cloth plate. On both sides of the top of the pressing cross beam, two groups of supporting pressing plates are fixedly arranged. On each group of supporting pressing plates, a top connecting rod seat is fixedly arranged. On each group of top connecting rod seats, a pressing cylinder is hingedly and movably arranged. One end of the main hinge rod is movably connected to the output end of the pressing cylinder, and the middle part is movably hinged to the top connecting rod seat through the top hinge shaft. The secondary hinge rod is movably hinged to the top connecting rod seat through the top hinge shaft. The main hinge rod and the secondary hinge rod are hingedly connected through the intermediate connecting rod and are simultaneously movably hinged to two groups of secondary connecting rods. The other ends of the two groups of secondary connecting rods are movably hinged to the pressing plate seat through the pressing plate hinge shaft. The knife-shaped pressing plate is fixedly arranged at the bottom of the pressing plate seat. Preferably, the air-jet loom for reducing the length of waste selvage yarn further includes a deviation rectifying and leveling mechanism, which includes a fixed slide plate seat, a movable slide seat, a smooth shaft, a smooth shaft seat, a main roller seat, a main roller, a push rod seat, and a screw push rod device. There are two groups of deviation rectifying and leveling mechanisms, which are respectively fixedly arranged on the bottom side of the supporting cloth plate. Smooth shafts are arranged on both the fixed slide plate seat and the movable slide seat. The smooth shaft seat is movably sleeved on the smooth shaft. On each group of smooth shaft seats, a main roller seat is movably arranged. On the two groups of main roller seats, a main roller is movably arranged. One end of the movable slide seat far from the fixed slide plate seat is fixedly provided with a screw push rod device through the push rod seat. A method for using an air-jet loom for reducing the length of waste selvage yarn includes the following steps: S1. The warp threads alternately cross through the front warp tooth plate and the rear warp tooth plate, the weft thread enters into the crossed warp threads, and the weft and warp cross-weaving is realized by the rotation and pushing of the comb teeth. S2. The gas enters the weft jet cylinder through the air inlet pipe, the weft thread enters through the weft inlet device, converges with the compressed air in the air inlet pipe, is pressurized through the pressurizing pipe and then sprayed out through the spray pipe. The precision control motor drives the screw rod to rotate by rotation, thereby driving the weft jet cylinder on the nut seat to move linearly along the guide rail to finely adjust the position of the weft insertion mechanism. S3. After the weft thread is sprayed out through the spray pipe, it is pressurized by the air flow of the auxiliary nozzle on the guide inclined plane along the way to maintain a straight movement. S4. The cam motor rotates, driving the rotating cam to rotate, and then driving the positioning chute on the pulling seat to linearly reciprocate along the positioning block through the connecting rod, and further driving the left and right scissor blades to open and close through two groups of pulling short pins to cut the weft yarn. S5. The runner motor rotates, driving the driving runner to rotate. A belt is movably arranged on the driving runner and the driven runner, driving the belt to rotate. The pressing cylinder operates, driving the sliding seat to linearly move along the guiding slide bar through the cylinder pushing seat, so that the woven fabric moves between the two belts by the friction between the belts. S6. By adjusting the position of the pressing limiter, the operating distance of the pressing cylinder can be changed, and thus the distance between the two belts can be changed to adapt to woven fabrics of different thicknesses. The driving runner rotates, driving the shaft encoder to rotate to record the length of the woven fabric. S7. The pressing cylinder operates. One end of the main hinge rod is movably hinged to the output end of the pressing cylinder, and the middle part is movably hinged to the top link seat through the top hinge shaft. The secondary hinge rod is movably hinged to the top link seat through the top hinge shaft. The main hinge rod and the secondary hinge rod are hinged and connected through the middle link and are simultaneously movably hinged to two groups of secondary links. The other ends of the two groups of secondary links are movably hinged to the pressing plate seat through the pressing plate hinge shaft, driving the knife-shaped pressing plate to move up and down. S8. The screw push rod device operates, driving the movable slide seat to move, and then driving the angle of the main roller relative to the woven fabric to change. Compared with the prior art, the beneficial effects of the present invention are as follows: 1. By setting the precise weft injection mechanism, the weft yarn is carried through the shuttle box by ejecting compressed air flow, improving the weft insertion speed. The front and rear positions are adjustable and can be adjusted according to the actual weft insertion situation, improving the weft insertion rate, reducing the material consumption during the weaving process, and effectively reducing the length of the waste edge yarn of the air-jet loom. Through the design of the weft feeder, the pressure-increasing pipe, and the air-jet pipe, the speed and pressure of the air flow can be adjusted, thereby controlling the tightness and thickness of the woven fabric and ensuring stable weaving quality and high finished product rate. Through the design of the guiding inclined surface, the auxiliary air-jet seat, and the auxiliary nozzle, the phenomenon of middle concave and collapse caused by the self-weight of the weft yarn is effectively improved, the straightness of the weft yarn is improved, the weft insertion stability is better, the operating efficiency is high, and the product quality is excellent.

[0014] 2. By setting up a cam cutting mechanism, through the design of linear bearings, sliding rods, blade fixing seats, cam motor seats, cam motors, rotating cams, and connecting rods, the cutting speed is effectively increased, which can significantly improve the production efficiency of air-jet looms. The sharp cutting edge can precisely cut yarns or fabrics during the weaving process, ensuring that the quality and dimensions of the fabric meet the requirements. The improvement of the cutting speed and the optimization of the scissor structure effectively reduce the length of waste edge yarns of air-jet looms.

[0015] 3. Through the design of the left scissor blade, right scissor blade, fastening groove, guiding hole, pulling seat, guiding short shaft, pulling short pin, positioning block, and positioning sliding groove, its durability is strong, and it can work stably for a long time, reducing production interruptions caused by frequent replacement of scissor blades. By regularly cleaning, inspecting, and replacing worn scissor blades, its service life can be effectively extended, and the maintenance cost can be reduced.

[0016] 4. By setting up a cloth edge guiding and pressing mechanism, the cloth edge can be effectively kept aligned, reducing the deviation during the cloth output process, thereby improving the cloth edge accuracy, effectively reducing the length of waste edge yarns, and reducing the risk of the cloth being stretched during the trimming of waste edges. 5. By setting up a downward pressure limiter, it can effectively work for fabrics of different thicknesses, improving the applicable width of the equipment. By setting up a rotary encoder, the weaving length can be accurately fed back to the system, improving the control quality of the weaving length accuracy.

[0017] 6. By setting up an adjusting tension groove and a tension screw, the belt can be effectively tightened and leveled, effectively avoiding the phenomenon of increased waste edge yarn length caused by the deviation of the belt direction resulting in the inclination of the fabric running. Through the design of the support angle plate and the conforming guide plate, the phenomenon of the fabric fluffing caused by the adhesion of the weaving and the belt is effectively avoided, improving the product quality of the output.

[0018] 7. By setting up a cloth edge pressing mechanism, during the weft insertion extrusion process, the cloth edge pressing mechanism acts and the fabric is stationary, effectively improving the stability during the weft weaving process and improving the surface quality and texture effect of the weaving.

[0019] 8. By setting up a deviation rectifying and leveling mechanism, by adjusting the screw push rod device, the position of the deviation rectifying and leveling mechanism is adjusted, thereby realizing the adjustment of the weaving position, effectively avoiding the deviation during the weaving operation process, improving the running smoothness, and also reducing the length of waste edge yarns to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings of the specification: Figure 1 It is the left view of the present invention; Figure 2 It is the front view of the present invention; Figure 3 Right view of the present invention; Figure 4 Schematic diagram of the three-dimensional structure of the present invention; Figure 5 is Figure 2 Schematic diagram of the structure of the cross-section in the A-A direction in; Figure 6 is Figure 5 Schematic diagram of the partial enlargement of area B in; Figure 7 is Figure 4 Schematic diagram of the partial enlargement of area C in; Figure 8 is Figure 5 Schematic diagram of the partial enlargement of area D in; Figure 9 Schematic diagram of the three-dimensional structure of the cam cutting mechanism of the present invention; Figure 10 is Figure 9 Schematic diagram of the partial enlargement of area E in; Figure 11 Schematic diagram of the three-dimensional structure of the cloth edge guiding and pressing mechanism of the present invention; Figure 12 Front view of the cloth edge guiding and pressing mechanism of the present invention; Figure 13 is Figure 12 Schematic diagram of the partial enlargement of area F in; Figure 14 is Figure 12 Schematic diagram of the partial enlargement of area G in; Figure 15 Schematic diagram of the three-dimensional structure of the cloth edge pressing mechanism of the present invention; Figure 16 Schematic diagram of the three-dimensional structure of the deviation rectifying and leveling mechanism of the present invention; In the figure: 1. Main loom mechanism; 101. Underframe; 102. Support column; 103. Left side plate; 104. Right side plate; 105. Warp tooth top beam; 106. Warp tooth cylinder; 107. Front warp tooth plate; 108. Rear warp tooth plate; 109. Comb tooth seat; 110. Comb tooth groove; 111. Comb tooth frame; 112. Comb tooth; 113. Support base fabric plate; 2. Precision control weft spraying mechanism; 201. Base plate; 202. Motor fixing plate; 203. Bearing seat; 204. Guide rail; 205. Lead screw; 206. Precision control motor; 207. Nut seat; 208. Weft spraying air cylinder; 209. Air inlet pipe; 210. Weft inlet device; 211. Booster pipe; 212. Jet pipe; 213. Guide inclined plane; 214. Auxiliary jet seat; 215. Auxiliary nozzle; 3. Cam cutting mechanism; 301. Scissor positioning seat; 302. Scissor fixing seat; 303. Bearing support plate; 304. Linear bearing; 305. Sliding rod; 306. Blade fixing seat; 307. Cam motor seat; 308. Cam motor; 309. Rotating cam; 310. Connecting rod; 311. Left scissor blade; 312. Right scissor blade; 313. Clamping groove; 314. Guide hole; 315. Pulling seat; 316. Guide short shaft; 317. Pulling short pin; 318. Positioning block; 319. Positioning sliding groove; 4. Fabric edge guiding and pressing mechanism; 401. Fixed sliding seat; 402. Guide sliding rod; 403. Sliding linear bearing; 404. Sliding seat; 405. Runner seat; 406. Driving runner; 407. Driven runner; 408. End cover plate; 409. Belt; 410. Runner motor seat; 411. Runner motor; 412. Cylinder pushing seat; 413. Cylinder top plate; 414. Lower pressing cylinder; 415. Lower pressing limiter; 416. Shaft encoder; 417. Adjusting tensioning groove; 418. Tensioning set screw; 419. Support angle plate; 420. Contour guide plate; 5. Fabric edge top pressing mechanism; 501. Top pressing cross beam; 502. Support top pressing plate; 503. Top connecting rod seat; 504. Top pressing cylinder; 505. Top hinge shaft; 506. Main hinge rod; 507. Secondary hinge rod; 508. Intermediate connecting rod; 509. Second-stage connecting rod; 510. Pressing plate seat; 511. Pressing plate hinge shaft; 512. Knife-shaped pressing plate; 6. Deviation correction and leveling mechanism; 601. Fixed sliding plate seat; 602. Movable sliding seat; 603. Optical axis; 604. Optical axis seat; 605. Main roller seat; 606. Main roller; 607. Push rod seat; 608. Screw push rod device Detailed implementation mode Embodiment 1

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 - 16 An air-jet loom for reducing the length of waste edge yarn of an air-jet loom includes a loom main body mechanism 1, and the loom main body mechanism 1 includes a chassis 101, support columns 102, a left side plate 103, a right side plate 104, a warp tooth top beam 105, a warp tooth cylinder 106, a front warp tooth plate 107, a rear warp tooth plate 108, a comb tooth seat 109, a comb tooth groove 110, a comb tooth frame 111, comb teeth 112, and a support fabric plate 113; multiple groups of the support columns 102 are provided and are respectively fixedly arranged on both sides of the chassis 101, the left side plate 103 and the right side plate 104 are respectively fixedly arranged on the two sides of the support columns 102, the warp tooth top beam 105 is fixedly arranged on the tops of the left side plate 103 and the right side plate 104, multiple groups of the front warp tooth plate 107 and the rear warp tooth plate 108 are provided and are respectively fixedly arranged on the warp tooth top beam 105 through multiple groups of the warp tooth cylinders 106, the comb tooth seat 109 is movably arranged between the left side plate 103 and the right side plate 104 and swings axially, the comb tooth groove 110 is formed in the comb tooth seat 109, the comb tooth frame 111 is fixedly arranged in the comb tooth groove 110, multiple groups of the comb teeth 112 are provided and are evenly fixedly arranged in the comb tooth frame 111; the support fabric plate 113 is fixedly arranged between the left side plate 103 and the right side plate 104 and on the side of the comb tooth seat 109 away from the front warp tooth plate 107; during use, the warp threads cross alternately through the front warp tooth plate 107 and the rear warp tooth plate 108, the weft thread enters the crossed warp threads, and the weft and warp cross weaving is realized by the rotation and pushing of the comb teeth 112; A fine control weft jetting mechanism 2 for jetting weft is fixedly arranged on the loom main body mechanism 1; A cam cutting mechanism 3 for cutting the weft thread is fixedly arranged on the loom main body mechanism 1.

[0023] In some embodiments, refer to Figure 7The precise control weft injection mechanism 2 includes a bottom plate 201, a motor fixing plate 202, a bearing seat 203, guide rails 204, a lead screw 205, a precise control motor 206, a nut seat 207, a weft injection air cylinder 208, an air inlet pipe 209, a weft inlet device 210, a pressure increasing pipe 211, and a jet pipe 212; the bottom plate 201 is fixedly arranged at one end of the comb tooth seat 109, the motor fixing plate 202 is fixedly arranged on one side of the bottom plate 201, the bearing seat 203 is fixedly arranged on the bottom plate 201, the precise control motor 206 is fixedly arranged on the side of the motor fixing plate 202 far from the bearing seat 203, there are two groups of guide rails 204, which are arranged in parallel on both sides of the bottom plate 201, the lead screw 205 is movably sleeved in the bearing seat 203, one end of which is fixedly connected to the shaft end of the precise control motor 206, the nut seat 207 is movably arranged on the lead screw 205 through a lead screw nut, the weft injection air cylinder 208 is fixedly arranged on the nut seat 207, one end of which is fixedly provided with multiple air inlet pipes 209, and the other end is fixedly provided with a weft inlet device 210, a pressure increasing pipe 211 is fixedly arranged on the side of the weft inlet device 210 far from the weft injection air cylinder 208, and a jet pipe 212 is fixedly arranged along the end of the pressure increasing pipe 211; during use, gas enters the weft injection air cylinder 208 through the air inlet pipe 209, the weft enters through the weft inlet device 210, converges with the compressed air in the air inlet pipe 209, is pressurized through the pressure increasing pipe 211 and then ejected through the jet pipe 212, the precise control motor 206 drives the lead screw 205 to rotate through rotation, so as to drive the weft injection air cylinder 208 on the nut seat 207 to move linearly along the guide rail 204 to finely adjust the position of the weft insertion mechanism; by setting the precise control weft injection mechanism, the weft yarn is carried across the shed by ejecting compressed air flow, which improves the weft insertion speed, the front and rear positions are adjustable, and it can be adjusted according to the actual weft insertion situation, which improves the weft insertion rate, makes the material consumption less during the weaving process, and effectively reduces the length of the waste edge yarn of the air-jet loom; through the design of the weft inlet device, the pressure increasing pipe, and the jet pipe, the speed and pressure of the air flow can be adjusted, so as to control the tightness and thickness of the woven fabric, thereby ensuring stable weaving quality and high yield. Through the design of the guide inclined plane, the auxiliary jet seat, and the auxiliary nozzle, the phenomenon of middle concave and collapse caused by the self-gravity of the weft yarn is effectively improved, the straightness of the weft yarn is improved, the weft insertion stability is better, the operation efficiency is high, and the product quality is excellent.

[0024] In some embodiments, referring to Figure 8The precise control weft spraying mechanism 2 further includes a guide inclined surface 213, an auxiliary air jet seat 214, and an auxiliary nozzle 215; a guide inclined surface 213 is provided on the comb tooth seat 109, multiple groups of the auxiliary air jet seats 214 are provided and are evenly and fixedly arranged on the guide inclined surface 213, and an auxiliary nozzle 215 is fixedly arranged on each group of the auxiliary air jet seats 214; during use, when the weft yarn is ejected from the air jet pipe 212, it is pressurized by the airflow of the auxiliary nozzle 215 on the guide inclined surface 213 along the way to maintain linear motion; In some embodiments, referring to Figures 9 - 10The cam cutting mechanism 3 includes a scissor positioning seat 301, a scissor fixing seat 302, a bearing support plate 303, linear bearings 304, sliding rods 305, a blade fixing seat 306, a cam motor seat 307, a cam motor 308, a rotating cam 309, a connecting rod 310, a left scissor blade 311, a right scissor blade 312, a fastening pulling groove 313, a guiding hole 314, a pulling seat 315, a guiding short shaft 316, a pulling short pin 317, a positioning block 318, and a positioning sliding groove 319. The scissor fixing seat 302 is fixedly arranged on the scissor positioning seat 301. The bearing support plate 303 is fixedly connected to the scissor fixing seat 302. Multiple groups of linear bearings 304 are evenly and fixedly arranged on the bearing support plate 303. Multiple groups of sliding rods 305 are movably arranged in the linear bearings 304. Both ends of the blade fixing seat 306 are fixedly connected to multiple groups of the sliding rods 305. The cam motor seat 307 is fixedly arranged on the bearing support plate 303. The cam motor 308 is fixedly arranged on the cam motor seat 307. The rotating cam 309 is fixedly arranged at the output shaft end of the cam motor 308. The left scissor blade 311 and the right scissor blade 312 are movably arranged on the blade fixing seat 306 through a spindle. Symmetrical fastening pulling grooves 313 are formed at the tails of the left scissor blade 311 and the right scissor blade 312. Guiding holes 314 are formed on both sides of the blade fixing seat 306. The pulling seat 315 is movably arranged on the blade fixing seat 306 through the cooperation of the guiding short shaft 316 and the guiding holes 314. Two groups of pulling short pins 317 are fixedly arranged on the pulling seat 315 and are fastened in the fastening pulling grooves 313 formed on the left scissor blade 311 and the right scissor blade 312. Positioning blocks 318 are fixedly arranged on both sides of the blade fixing seat 306. Positioning sliding grooves 319 are formed on both sides of the pulling seat 315 and are in sliding fit with the positioning blocks 318. One end of the connecting rod 310 is movably arranged on the rotating cam 309, and the other end is movably hinged to the pulling seat 315. Two groups of the cam cutting mechanisms 3 are respectively fixedly arranged on the inner walls of the left side plate 103 and the right side plate 104 through the scissor positioning seats 301. During use, the cam motor 308 rotates, driving the rotating cam 309 to rotate, and then driving the positioning sliding groove 319 on the pulling seat 315 to perform a linear reciprocating motion along the positioning block 318 through the connecting rod 310, and driving the left scissor blade 311 and the right scissor blade 312 to open and close through the two groups of pulling short pins 317 to cut the weft thread.By setting up a cam cutting mechanism, through the design of linear bearings, sliding rods, blade fixing seats, cam motor seats, cam motors, rotating cams, and connecting rods, the cutting speed is effectively increased, which can significantly improve the production efficiency of air-jet looms. The sharp cutting edge can precisely cut yarns or fabrics during the weaving process, ensuring that the quality and dimensions of the fabric meet the requirements. The improvement of the cutting speed and the optimization of the scissor structure effectively reduce the length of waste edge yarns of air-jet looms. Through the design of scissor left blades, scissor right blades, fastening grooves, guiding holes, pulling seats, guiding short shafts, pulling short pins, positioning blocks, and positioning sliding grooves, it has strong durability and can work stably for a long time, reducing production interruptions caused by frequent replacement of scissor blades. By regularly cleaning, inspecting, and replacing worn scissor blades, its service life can be effectively extended and the maintenance cost can be reduced.

[0025] In some embodiments, refer to Figures 11 - 12The air-jet loom for reducing the length of waste edge yarn of the air-jet loom further includes a cloth edge guiding and pressing mechanism 4. The cloth edge guiding and pressing mechanism 4 includes a fixed sliding seat 401, a guiding sliding rod 402, a sliding linear bearing 403, a sliding seat 404, a runner seat 405, a driving runner 406, a driven runner 407, an end cover plate 408, a belt 409, a runner motor seat 410, a runner motor 411, a cylinder pushing seat 412, a cylinder top plate 413, and a downward pressing cylinder 414. The fixed sliding seat 401 is fixedly arranged on the supporting base cloth plate 113. A plurality of groups of guiding sliding rods 402 are arranged and fixedly arranged on the fixed sliding seat 401. A plurality of groups of sliding linear bearings 403 are arranged and respectively movably arranged on the plurality of groups of guiding sliding rods 402. The sliding seat 404 is fixedly connected with the plurality of groups of sliding linear bearings 403. Two groups of runner seats 405 are arranged and respectively fixedly arranged on the fixed sliding seat 401 and the sliding seat 404, arranged in the same direction. A driving runner 406 and a driven runner 407 are movably arranged on each group of runner seats 405, arranged in parallel, and supported by the end cover plate 408 in the other direction, symmetrically arranged with the runner seat 405. A belt 409 is movably arranged on the driving runner 406 and the driven runner 407. Two groups of runner motor seats 410 are arranged and respectively fixedly arranged on the two groups of runner seats 405. A runner motor 411 is fixedly arranged on each group of runner motor seats 410, and its output shaft is fixedly connected with the driving runner 406. The cylinder top plate 413 is fixedly arranged on the top of the guiding sliding rod 402. The downward pressing cylinder 414 is fixedly arranged on the top of the cylinder top plate 413. One end of the cylinder pushing seat 412 is fixedly arranged on the sliding seat 404, and the other end is fixedly connected with the output of the downward pressing cylinder 414. During use, the runner motor 411 rotates, thereby driving the driving runner 406 to rotate. A belt 409 is movably arranged on the driving runner 406 and the driven runner 407, thereby driving the belt 409 to rotate. The downward pressing cylinder 414 acts, thereby driving the sliding seat 404 to linearly move along the guiding sliding rod 402 through the cylinder pushing seat 412, so that the woven fabric moves between the two groups of belts 409 with the friction between the belts. By arranging the cloth edge guiding and pressing mechanism, the cloth edge can be effectively kept aligned, the deviation during the cloth output process can be reduced, thereby improving the cloth edge accuracy, effectively reducing the length of the waste edge yarn, and reducing the risk of the fabric being stretched during the trimming of the waste edge; In some embodiments, referring to Figure 13The cloth edge guiding and pressing mechanism 4 further includes a downward pressing limiter 415 and a shaft encoder 416; the downward pressing limiter 415 is fixedly arranged on the cylinder top plate 413, and the shaft encoder 416 is fixedly arranged at one end of the lower set of the driving rollers 406 away from the roller motor 411; in use, by adjusting the position of the downward pressing limiter 415, the action distance of the downward pressing cylinder 414 can be changed, so as to change the distance between the two belts 409 to adapt to cloths of different thicknesses; the driving roller 406 rotates, thereby driving the shaft encoder 416 to rotate to record the length of the woven cloth; by setting the downward pressing limiter, effective operation can be achieved for cloths of different thicknesses, the applicable width of the equipment can be increased, and by setting the shaft encoder, the length of the woven cloth can be accurately fed back to the system, improving the control quality of the woven cloth length accuracy.

[0026] In some embodiments, refer to Figure 14 The cloth edge guiding and pressing mechanism 4 further includes an adjusting tension groove 417, a tension screw 418, a support angle plate 419, and a conforming guide plate 420; the adjusting tension groove 417 is provided on one side of the roller seat 405 and the end cover plate 408 close to the driven roller 407 and is fixed by the tension screw 418, the support angle plate 419 is fixedly arranged on the lower set of the end cover plates 408, and the conforming guide plate 420 is fixedly arranged on the support angle plate 419 and is tangent to the belt 409; by setting the adjusting tension groove and the tension screw, the belt can be effectively tightened and leveled, effectively avoiding the phenomenon of increased length of waste edge yarn caused by the inclination of the cloth running due to the deviation of the belt direction, and through the design of the support angle plate and the conforming guide plate, the phenomenon of the woven cloth fluffing due to the adhesion of the woven cloth and the belt is effectively avoided, improving the product quality of the product.

[0027] In some embodiments, refer to Figure 15The air-jet loom for reducing the length of waste edge yarn of the air-jet loom further includes a cloth edge pressing mechanism 5. The cloth edge pressing mechanism 5 includes a pressing cross beam 501, a supporting pressing plate 502, a top link seat 503, a pressing cylinder 504, a top hinge shaft 505, a main hinge rod 506, a secondary hinge rod 507, an intermediate link 508, a secondary link 509, a pressing plate seat 510, a pressing plate hinge shaft 511, and a knife-shaped pressing plate 512. The pressing cross beam 501 is fixedly arranged on the left side plate 103 and the right side plate 104, on the top of the supporting cloth plate 113. On both sides of the top of the pressing cross beam 501, two groups of supporting pressing plates 502 are fixedly arranged. On each group of the supporting pressing plates 502, a top link seat 503 is fixedly arranged. On each group of the top link seats 503, a pressing cylinder 504 is hingedly and movably arranged. One end of the main hinge rod 506 is movably connected to the output end of the pressing cylinder 504, and the middle part is movably hinged to the top link seat 503 through the top hinge shaft 505. The secondary hinge rod 507 is movably hinged to the top link seat 503 through the top hinge shaft 505. The main hinge rod 506 and the secondary hinge rod 507 are hingedly connected through the intermediate link 508 and are simultaneously movably hinged to two groups of the secondary links 509. The other ends of the two groups of the secondary links 509 are movably hinged to the pressing plate seat 510 through the pressing plate hinge shaft 511. The knife-shaped pressing plate 512 is fixedly arranged at the bottom of the pressing plate seat 510. During use, the pressing cylinder 504 acts. One end of the main hinge rod 506 is movably connected to the output end of the pressing cylinder 504, and the middle part is movably hinged to the top link seat 503 through the top hinge shaft 505. The secondary hinge rod 507 is movably hinged to the top link seat 503 through the top hinge shaft 505. The main hinge rod 506 and the secondary hinge rod 507 are hingedly connected through the intermediate link 508 and are simultaneously movably hinged to two groups of the secondary links 509. The other ends of the two groups of the secondary links 509 are movably hinged to the pressing plate seat 510 through the pressing plate hinge shaft 511, so as to drive the knife-shaped pressing plate 512 to move up and down. By arranging the cloth edge pressing mechanism, during the weft insertion and extrusion process, the cloth edge pressing mechanism acts and the cloth is static, effectively improving the stability during the weft knitting process, and improving the surface quality and texture effect of the knitted fabric.

[0028] In some embodiments, referring to Figure 16The air-jet loom for reducing the length of waste edge yarns of the air-jet loom further includes a deviation rectifying and leveling mechanism 6, and the deviation rectifying and leveling mechanism 6 includes a fixed slide plate seat 601, a movable slide seat 602, a smooth shaft 603, a smooth shaft seat 604, a main roller seat 605, a main roller 606, a push rod seat 607, and a screw push rod device 608. There are two sets of the deviation rectifying and leveling mechanism 6, which are respectively fixedly arranged on the bottom side of the supporting fabric plate 113. Smooth shafts 603 are arranged on both the fixed slide plate seat 601 and the movable slide seat 602, and the smooth shaft seat 604 is movably sleeved on the smooth shaft 603. A main roller seat 605 is movably arranged on each set of smooth shaft seats 604, and a main roller 606 is movably arranged on the two sets of main roller seats 605. One end of the movable slide seat 602 away from the fixed slide plate seat 601 is fixedly provided with a screw push rod device 608 through the push rod seat 607. During use, the screw push rod device 608 acts to push the movable slide seat 602 to move, thereby driving the angle of the main roller 606 relative to the woven fabric to change. By providing the deviation rectifying and leveling mechanism and adjusting the screw push rod device, the position of the deviation rectifying and leveling mechanism can be adjusted, thereby realizing the adjustment of the position of the woven fabric, effectively avoiding the deviation during the operation of the woven fabric, improving the running stability, and reducing the length of the waste edge yarns to a certain extent.

[0029] A method for using an air-jet loom for reducing the length of waste edge yarns of the air-jet loom includes the following steps: S1. The warp yarns cross alternately through the front warp tooth plate 107 and the rear warp tooth plate 108, and the weft yarn enters into the crossed warp yarns, and the rotation of the comb teeth 112 is used to push to realize the cross-weaving of the warp and weft. S2. The gas enters into the weft-jet air cylinder 208 through the air inlet pipe 209, the weft yarn enters through the weft inlet device 210, converges with the compressed air in the air inlet pipe 209, is pressurized by the pressurizing pipe 211 and then sprayed out through the spray pipe 212. The precision control motor 206 drives the screw rod 205 to rotate by rotation, thereby driving the weft-jet air cylinder 208 on the nut seat 207 to move linearly along the guide rail 204 to finely adjust the position of the weft-insertion mechanism. S3. After the weft yarn is sprayed out through the spray pipe 212, it is pressurized by the air flow of the auxiliary nozzle 215 on the guide inclined plane 213 along the way to maintain linear motion. S4. The cam motor 308 rotates, thereby driving the rotating cam 309 to rotate, thereby driving the positioning sliding groove 319 on the pulling seat 315 to perform linear reciprocating motion along the positioning block 318 through the connecting rod 310, and thereby driving the left scissors blade 311 and the right scissors blade 312 to open and close through the two pulling short pins 317 to cut off the weft yarn. S5. The runner motor 411 rotates, thereby driving the driving runner 406 to rotate. A belt 409 is movably arranged on the driving runner 406 and the driven runner 407, thereby driving the belt 409 to rotate. The pressing cylinder 414 operates, thereby driving the sliding seat 404 to linearly move along the guiding slide rod 402 through the cylinder push seat 412, so that the woven fabric moves between the two belts 409 by means of friction between the belts. S6. By adjusting the position of the pressing limiter 415, the operating distance of the pressing cylinder 414 can be changed, thereby changing the distance between the two belts 409 to adapt to woven fabrics of different thicknesses. The driving runner 406 rotates, thereby driving the shaft encoder 416 to rotate, so as to record the length of the woven fabric. S7. The pressing cylinder 504 operates. One end of the main hinge rod 506 is movably hinged to the output end of the pressing cylinder 504, and the middle part is movably hinged to the top link seat 503 through the top hinge shaft 505. The secondary hinge rod 507 is movably hinged to the top link seat 503 through the top hinge shaft 505. The main hinge rod 506 and the secondary hinge rod 507 are hinged and connected through the middle link 508 and are simultaneously movably hinged to the two secondary links 509. The other ends of the two secondary links 509 are movably hinged to the pressing plate seat 510 through the pressing plate hinge shaft 511, thereby driving the knife-shaped pressing plate 512 to move up and down. S8. The screw push rod device 608 operates, thereby pushing the movable slide seat 602 to move, so that the angle of the main roller 606 relative to the woven fabric changes. Obviously, the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And these obvious changes or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. An air jet loom for reducing the length of waste yarn of the air jet loom, characterized in that: The loom main body mechanism (1) comprises a base frame (101), a support column (102), a left side plate (103), a right side plate (104), a warp tooth top beam (105), a warp tooth cylinder (106), a front warp tooth plate (107), a rear warp tooth plate (108), a comb tooth seat (109), a comb tooth groove (110), a comb tooth frame (111), comb teeth (112), and a grey cloth supporting plate (113); the support column (102) is provided with a plurality of groups, which are respectively fixedly arranged on both sides of the base frame (101); the support columns (102) on both sides are respectively fixedly arranged with a left side plate (103) and a right side plate (104); the warp tooth top beam (105) is fixedly arranged on the top of the left side plate (103) and the top of the right side plate (104). The front warp tooth plate (107) and the rear warp tooth plate (108) are provided with a plurality of groups, and are fixedly arranged on the warp tooth top beam (105) through a plurality of groups of warp tooth cylinders (106); the comb tooth seat (109) is movably arranged between the left plate (103) and the right plate (104) and axially swings; a comb tooth groove (110) is provided on the comb tooth seat (109); the comb tooth frame (111) is fixedly arranged in the comb tooth groove (110); the comb teeth (112) are provided with a plurality of groups and are evenly fixedly arranged in the comb tooth frame (111); the supporting cloth plate (113) is fixedly arranged between the left plate (103) and the right plate (104); the comb tooth seat (109) is away from the front warp tooth plate (107); A precision-controlled weft-injection mechanism (2) for air-jet weft insertion is fixedly arranged on the loom main body mechanism (1); A cam cutting mechanism (3) for cutting weft threads is fixedly arranged on the loom main body mechanism (1).

2. The air jet loom for reducing the length of waste yarn of the air jet loom according to claim 1, characterized in that: The precision-controlled weft jetting mechanism (2) comprises a base plate (201), a motor fixing plate (202), a bearing seat (203), a guide rail (204), a screw rod (205), a precision-controlled motor (206), a nut seat (207), a weft jetting cylinder (208), an air intake pipe (209), a weft advancer (210), a boost pipe (211), and an air jet pipe (212); the base plate (201) is fixedly arranged on one end of the comb tooth seat (109), the motor fixing plate (202) is fixedly arranged on one side of the base plate (201), the bearing seat (203) is fixedly arranged on the base plate (201), the precision-controlled motor (206) is fixedly arranged on a side of the motor fixing plate (202) away from the bearing seat (203), and two groups of guide rails (204) are provided and arranged in parallel on both sides of the base plate (201). The screw rod (205) is movably sleeved in the bearing seat (203), and one end of the screw rod is fixedly connected to the shaft end of the precision control motor (206). The nut seat (207) is movably arranged on the screw rod (205) through the screw rod nut. The weft spray cylinder (208) is fixedly arranged on the nut seat (207), and one end of the weft spray cylinder (208) is fixedly arranged with multiple groups of air intake pipes (209), and the other end is fixedly arranged with a weft advancer (210). A booster pipe (211) is fixedly arranged on the side of the weft advancer (210) away from the weft spray cylinder (208), and an air jet pipe (212) is fixedly arranged along the end of the booster pipe (211).

3. The air jet loom for reducing the length of waste yarn of the air jet loom according to claim 2, characterized in that: The precise control weft jetting mechanism (2) further comprises a guide bevel (213), an auxiliary jet seat (214), and an auxiliary nozzle (215); the comb tooth seat (109) is provided with a guide bevel (213); a plurality of groups of the auxiliary jet seats (214) are evenly and fixedly arranged on the guide bevel (213); and an auxiliary nozzle (215) is fixedly arranged on each group of the auxiliary jet seats (214).

4. The air jet loom for reducing the length of waste yarn of the air jet loom according to claim 3, characterized in that: The cam cutting mechanism (3) comprises a scissors positioning seat (301), a scissors fixing seat (302), a bearing support plate (303), a linear bearing (304), a sliding rod (305), a blade fixing seat (306), a cam motor seat (307), a cam motor (308), a rotating cam (309), a connecting rod (310), a scissors left blade (311), a scissors right blade (312), a snap-fitting groove (313), a guide hole (314), a pulling seat (315), a guide short shaft (316), a pulling short pin (317), a positioning block (318), and a positioning slide groove (319); the scissors fixing seat (302) is fixedly arranged On the scissors positioning seat (301), the bearing support plate (303) is fixedly connected to the scissors fixing seat (302), a plurality of linear bearings (304) are provided and are evenly fixedly arranged on the bearing support plate (303), a plurality of sliding rods (305) are provided and are movably arranged in the linear bearings (304), both ends of the blade fixing seat (306) are fixedly connected to the plurality of sliding rods (305), the cam motor seat (307) is fixedly arranged on the bearing support plate (303), the cam motor (308) is fixedly arranged on the cam motor seat (307), and the rotating cam (309) The scissors are fixedly arranged at the output shaft end of the cam motor (308); the left blade (311) and the right blade (312) of the scissors are movably arranged on the blade fixing seat (306) via a pin shaft; the tails of the left blade (311) and the right blade (312) of the scissors are provided with symmetrical buckling grooves (313); guide holes (314) are provided on both sides of the blade fixing seat (306); the pulling seat (315) is movably arranged on the blade fixing seat (306) through the cooperation of the guide short shaft (316) and the guide hole (314); two groups of pulling short pins (317) are fixedly arranged on the pulling seat (315); the buckling Positioning blocks (318) are fixedly arranged on both sides of the blade fixing seat (306) in the snap-fitting grooves (313) provided on the left blade (311) and the right blade (312) of the scissors, and positioning slide grooves (319) are provided on both sides of the pulling seat (315) to slidably cooperate with the positioning blocks (318); one end of the connecting rod (310) is movably arranged on the rotating cam (309), and the other end is movably hinged to the pulling seat (315); the cam cutting mechanism (3) is provided with two groups, which are respectively fixedly arranged on the inner walls of the left side plate (103) and the right side plate (104) through the scissors positioning seats (301).

5. The air jet loom for reducing the length of waste yarn of the air jet loom according to claim 4, characterized in that: The air jet loom for reducing the length of waste yarn of the air jet loom further comprises a cloth edge pressure guiding mechanism (4), wherein the cloth edge pressure guiding mechanism (4) comprises a fixed slide seat (401), a guide slide rod (402), a sliding linear bearing (403), a slide seat (404), a rotating wheel seat (405), a driving rotating wheel (406), a driven rotating wheel (407), an end cover plate (408), a belt (409), a rotating wheel motor seat (410), a rotating wheel motor (411), a cylinder push seat (412), and a cylinder top plate (413). , a downward pressing cylinder (414); the fixed slide seat (401) is fixedly arranged on the supporting blank cloth plate (113); the guide slide bars (402) are provided with a plurality of groups, which are fixedly arranged on the fixed slide seat (401); the sliding linear bearings (403) are provided with a plurality of groups, which are movably arranged on the plurality of groups of the guide slide bars (402); the sliding seat (404) is fixedly connected to the plurality of groups of the sliding linear bearings (403); the rotating wheel seat (405) is provided with two groups, which are fixedly arranged on the plurality of groups of the guide slide bars (402); The fixed slide seat (401) and the sliding seat (404) are arranged in the same direction, and each group of the rotating wheel seats (405) is movably provided with a driving rotating wheel (406) and a driven rotating wheel (407), which are arranged in parallel and supported by the end cover plate (408) in another direction, and are arranged symmetrically with the rotating wheel seats (405). The driving rotating wheel (406) and the driven rotating wheel (407) are movably provided with a belt (409), and the rotating wheel motor seat (410) is provided with two groups, which are respectively fixedly provided on the two groups of rotating wheels. On the wheel seat (405), a wheel motor (411) is fixedly arranged on each group of the wheel motor seats (410), and its output shaft is fixedly connected to the active wheel (406); the cylinder top plate (413) is fixedly arranged on the top of the guide slide bar (402); the downward pressure cylinder (414) is fixedly arranged on the top of the cylinder top plate (413); one end of the cylinder push seat (412) is fixedly arranged on the slide seat (404), and the other end is fixedly connected to the output of the downward pressure cylinder (414).

6. The air jet loom for reducing the length of waste yarn of the air jet loom according to claim 5, characterized in that: The cloth edge pressure guiding mechanism (4) further comprises a downward pressure limiter (415) and a rotating shaft encoder (416); the downward pressure limiter (415) is fixedly arranged on the cylinder top plate (413), and the rotating shaft encoder (416) is fixedly arranged on one end of a lower group of the active rotating wheels (406) away from the rotating wheel motor (411).

7. The air jet loom for reducing the length of waste yarn of the air jet loom according to claim 6, characterized in that: The cloth edge pressure guiding mechanism (4) further comprises an adjusting tensioning groove (417), a tensioning top screw (418), a supporting angle plate (419), and a conforming guide plate (420); the rotating wheel seat (405) and the end cover plate (408) are provided with an adjusting tensioning groove (417) on a side close to the driven rotating wheel (407) and are fixed by the tensioning top screw (418); the supporting angle plate (419) is fixedly arranged on a lower group of the end cover plates (408); the conforming guide plate (420) is fixedly arranged on the supporting angle plate (419) and is tangent to the belt (409).

8. The air jet loom for reducing the length of waste yarn of the air jet loom according to claim 7, characterized in that: The air jet loom for reducing the length of waste yarn of the air jet loom further comprises a cloth edge pressing mechanism (5), the cloth edge pressing mechanism (5) comprising a pressing crossbeam (501), a supporting pressing plate (502), a top connecting rod seat (503), a pressing cylinder (504), a top hinge shaft (505), a main hinge rod (506), a secondary hinge rod (507), an intermediate connecting rod (508), a secondary connecting rod (509), a pressing plate seat (510), a pressing plate hinge shaft (511), and a knife-shaped pressing plate (512); the pressing crossbeam (501) is fixedly arranged on the left side plate (103) and the right side plate (104), and on the top of the supporting grey cloth plate (113); two groups of supporting pressing plates (502) are fixedly arranged on both sides of the top of the pressing crossbeam (501), and a top connecting rod seat (503) is fixedly arranged on each group of the supporting pressing plates (502). 3) A top pressure cylinder (504) is movably hingedly provided on each group of the top connecting rod seats (503); one end of the main hinge rod (506) is movably connected to the output end of the top pressure cylinder (504); the middle part is movably hinged to the top connecting rod seat (503) through the top hinge shaft (505); the secondary hinge rod (507) is movably hinged to the top connecting rod seat (503) through the top hinge shaft (505); the main hinge rod (506) and the secondary hinge rod (507) are hingedly connected through the intermediate connecting rod (508) and are movably hinged to the two groups of secondary connecting rods (509) at the same time; the other ends of the two groups of secondary connecting rods (509) are movably hinged to the pressure plate seat (510) through the pressure plate hinge shaft (511); and the knife-shaped pressure plate (512) is fixedly arranged at the bottom of the pressure plate seat (510).

9. The air jet loom for reducing the length of waste yarn of the air jet loom according to claim 8, characterized in that: The air jet loom for reducing the length of waste yarn of the air jet loom further comprises a deflection correction and leveling mechanism (6), wherein the deflection correction and leveling mechanism (6) comprises a fixed slide seat (601), a movable slide seat (602), an optical axis (603), an optical axis seat (604), a main roller seat (605), a main roller (606), a push rod seat (607), and a spiral push rod device (608); the deflection correction and leveling mechanism (6) is provided with two groups, which are respectively fixedly arranged on the bottom side of the supporting grey cloth plate (113), and the fixed slide seat (601) is provided with a movable slide seat (602), an optical axis (603), an optical axis seat (604), a main roller seat (605), a main roller (606), a push rod seat (607), and a spiral push rod device (608); An optical axis (603) is provided on both the plate seat (601) and the movable slide seat (602); the optical axis seat (604) is movably sleeved on the optical axis (603); a main roller seat (605) is movably provided on each group of the optical axis seats (604); main rollers (606) are movably provided on two groups of the main roller seats (605); and a screw push rod device (608) is fixedly provided on one end of the movable slide seat (602) away from the fixed slide seat (601) via the push rod seat (607).

10. The method for using an air jet loom to reduce the length of waste yarn of the air jet loom according to claim 9, characterized in that: The steps include: S1, the warp threads are alternately crossed through the front warp tooth plate (107) and the rear warp tooth plate (108), and the weft threads enter the crossed warp threads and are rotated and pushed by the comb teeth (112) to realize warp and weft crossed weaving; S2, gas enters the weft spraying cylinder (208) through the air inlet pipe (209), the weft thread enters through the weft advancer (210), and merges with the compressed air in the air inlet pipe (209), is pressurized by the booster pipe (211), and is ejected through the jet pipe (212), the precision control motor (206) drives the screw rod (205) to rotate by rotating, thereby driving the weft spraying cylinder (208) on the nut seat (207) to move linearly along the guide rail (204), and finely adjusting the position of the weft insertion mechanism; S3, after the weft is ejected through the jet pipe (212), the airflow is pressurized by the auxiliary nozzle (215) on the guide slope (213) along the way to maintain linear motion; S4, the cam motor (308) rotates, thereby driving the rotating cam (309) to rotate, thereby driving the positioning slot (319) on the pulling seat (315) to reciprocate along the positioning block (318) through the connecting rod (310), thereby driving the left blade (311) and the right blade (312) of the scissors to open and close through the two groups of the pulling short pins (317), thereby cutting the weft; S5, the wheel motor (411) rotates, thereby driving the driving wheel (406) to rotate, and the driving wheel (406) and the driven wheel (407) are movably provided with belts (409), thereby driving the belts (409) to rotate, and the downward pressure cylinder (414) is actuated, thereby driving the sliding seat (404) to move linearly along the guide slide bar (402) through the cylinder push seat (412), so that the fabric moves between the two groups of belts (409) due to friction between the belts; S6. By adjusting the position of the downward pressure limiter (415), the action distance of the downward pressure cylinder (414) can be changed, thereby changing the distance between the two groups of belts (409) to adapt to fabrics of different thicknesses; the active rotating wheel (406) rotates, thereby driving the rotating shaft encoder (416) to rotate, so as to record the length of the fabric; S7, the push cylinder (504) is actuated, and one end of the main hinge rod (506) is movably connected to the output end of the push cylinder (504), and the middle part is movably hinged to the top connecting rod seat (503) through the top hinge shaft (505), and the secondary hinge rod (507) is movably hinged to the top connecting rod seat (503) through the top hinge shaft (505), and the main hinge rod (506) and the secondary hinge rod (507) are hingedly connected through the middle connecting rod (508), and are movably hinged to the two groups of secondary connecting rods (509) at the same time, and the other ends of the two groups of secondary connecting rods (509) are movably hinged to the pressing plate seat (510) through the pressing plate hinge shaft (511), thereby driving the knife-shaped pressing plate (512) to move up and down; S8, the screw pusher (608) moves, thereby pushing the movable slide (602) to move, thereby causing the angle of the main roller (606) relative to the fabric to change.

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