Quick yarn changing device of air jet loom

Abstract

The invention belongs to the technical field of air-jet loom equipment, and particularly relates to a quick yarn changing device of an air-jet loom. The top end of the creel base is rotationally connected with a supporting frame. A plurality of rotating shafts are mounted on the support frame; the outer walls of the multiple rotating shafts are fixedly connected with universal supports. Through cooperation of the creel base, the supporting frame, the rotating shaft and the universal support, it is ensured that the angles of the bobbins can be flexibly adjusted and threads can be stably supplied, according to the device, the bobbins are pushed by the pushing assembly to rapidly change the threads, traditional single-bobbin installation is replaced with the mode that multiple bobbins are synchronously installed, and the effect of rapidly changing the threads without shutdown is achieved; firstly, a plurality of bobbins with yarns are mounted on an I-shaped connecting rod, the bobbins are ensured not to rotate during yarn supply by utilizing a stabilizing structure, and when the yarns on the bobbin at the foremost end are almost used up, an electric slide block slides on a slide rail frame to drive a push plate to push the bobbins at the rear to slide to replace the bobbins with the used yarns, so that the yarns on the bobbins at the foremost end are completely used up. Therefore, quick yarn changing of the air-jet loom is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of air-jet loom equipment, and specifically relates to a rapid yarn-changing device for an air-jet loom. Background Art

[0002] An air-jet loom is a modern high-speed weaving machine that uses compressed air injection to introduce the weft yarn into the warp opening to complete fabric weaving. With its high-speed and automation advantages, the air-jet loom has become the mainstream equipment in the modern textile industry.

[0003] A Chinese patent with the publication number CN217399085U discloses a weft supply device for an air-jet loom that can quickly replace the weft yarn, including a positioning device. The upper end surface of the positioning device is rotationally clamped with a rotating device, and a jacking device is fixedly clamped inside the positioning device. This application can achieve the rapid replacement of the weft yarn through the cooperation between the positioning device, the jacking device, and the rotating device, improving the working efficiency of the air-jet loom.

[0004] During the production process of an air-jet loom, yarn changing is a crucial step, which directly affects the production efficiency and product quality of the loom. Although the above-mentioned yarn-changing device can quickly replace the weft yarn, traditional yarn-changing devices usually replace single yarn bobbins in sequence. This operation process takes a lot of time, and the loom needs to be paused every time a new yarn bobbin is replaced, thus seriously affecting the overall working efficiency of the air-jet loom.

[0005] Therefore, the present invention provides a rapid yarn-changing device for an air-jet loom. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A rapid yarn-changing device for an air-jet loom according to the present invention includes a yarn rack base; a support frame is rotatably connected to the top end of the yarn rack base; a plurality of rotating shafts are installed on the support frame; universal supports are fixedly connected to the outer walls of the plurality of rotating shafts; one end of the universal support away from the rotating shaft is fixedly connected to a connecting rod through a bolt; a yarn bobbin is slidably connected to the connecting rod, and the yarn bobbin is composed of two cylinders with different diameters; a pushing component is arranged on the universal support, and the pushing component is used to push the yarn bobbin for rapid yarn changing.

[0008] Preferably, the pushing component includes a slide rail frame, an electric slider, a fixing plate, a fixing block and a pushing plate; the two slide rail frames are fixedly connected to the universal support relatively; the electric slider is slidably connected to the slide rail frame; the fixing plate is fixedly connected to the outer wall of the electric slider; the fixing block is fixedly connected to the fixing plate, and the fixing block is located between one ends of the two fixing plates; a pushing plate is fixedly connected to one side of the fixing block close to the universal support, and the pushing plate fits against the outer wall of the universal support close to the connecting rod.

[0009] Preferably, the cross-sectional shape of the connecting rod is I-shaped, the inner wall of the yarn tube corresponds to the cross-sectional shape of the connecting rod, and the two connecting rods can be connected by bolts.

[0010] Preferably, a limiting frame is fixedly connected to one end of the connecting rod far from the universal support by a bolt; two sliding grooves are oppositely formed in the inner wall of the limiting frame; two clamping grooves are oppositely formed in the inner wall of the yarn tube; a limiting block is slidably connected to the inner wall of the sliding groove, and the limiting block corresponds to the clamping groove; a matching component is arranged inside the yarn tube, and the matching component is used for squeezing the limiting block downwards.

[0011] Preferably, the matching component includes a positioning plate and an extrusion block; the two extrusion blocks are respectively fixedly connected to the inner walls of the two clamping grooves; the two positioning plates are fixedly connected to the universal support relatively.

[0012] Preferably, the cross-sectional shape of the limiting block is trapezoidal, and the middle of the trapezoid is convexly arranged; one side of the extrusion block close to the limiting block is arc-shaped.

[0013] Preferably, sliding rods are oppositely arranged on both sides of the limiting frame; extrusion plates are fixedly connected to one ends of the two sliding rods close to the limiting frame, and an anti-slip pad is fixedly connected to the outer wall of the extrusion plate; connecting plates are fixedly connected to the other ends of the sliding rods far from the extrusion plates; a second elastic member is sleeved on the sliding rod close to the connecting plate; connecting components are oppositely arranged on both sides of the universal support, and the connecting components are used for supporting the sliding rods.

[0014] Preferably, the connecting component includes side support plates, sliding plates and convex blocks; the two side support plates are fixedly connected to both sides of the universal support relatively; the sliding plate is slidably connected to the inner wall of the side support plate, and the connecting plate is fixedly connected to the sliding plate, and the second elastic member is fixedly connected between the outer walls of the connecting plate and the side support plate; a plurality of convex blocks are fixedly connected to one side of the sliding plate close to the connecting rod.

[0015] Preferably, one side of the fixing block close to the convex block is arc-shaped; one side of the convex block close to the fixing block is arc-shaped.

[0016] Preferably, fixing frames are fixedly connected to the sides of one slide rail frame and the two side support plates far from the universal support; guide cylinders are fixedly connected to one ends of the three fixing frames close to each other.

[0017] The beneficial effects of the present invention are as follows: 1. For the rapid yarn-changing device of an air-jet loom according to the present invention, through the cooperation of the yarn rack base, the support frame, the rotating shaft and the universal support, it ensures that the yarn bobbin can be flexibly adjusted in angle and stably supply yarn. This device pushes the yarn bobbin by the pushing component for rapid yarn changing. The traditional single yarn bobbin installation is replaced by the synchronous installation of multiple yarn bobbins, achieving the effect of rapid yarn changing without stopping the machine. First, multiple yarn bobbins with yarn are installed on the I-shaped connecting rod, and a stable structure is used to ensure that the yarn bobbin does not rotate during yarn supply. When the yarn on the frontmost yarn bobbin is almost used up, the electric slider slides on the slide rail frame, driving the push plate to push the rear yarn bobbin to slide and replace the yarn bobbin with the used-up yarn, thus realizing the rapid yarn changing of the air-jet loom.

[0018] 2. For the rapid yarn-changing device of an air-jet loom according to the present invention, by setting the limiting block on the limiting frame to be clamped with the frontmost yarn bobbin, the stability of the yarn supply of the frontmost yarn bobbin is improved. When changing yarn, the extrusion block presses the limiting block into the chute, so that the rear yarn bobbin replaces the frontmost yarn bobbin, realizing seamless yarn changing. In addition, in order to further improve the stability of the yarn supply of the frontmost yarn bobbin, two extrusion plates are provided to be able to tightly clamp or release the frontmost yarn bobbin, ensuring seamless connection during the yarn-changing process. During this process, the guiding cylinder is used as a yarn guide, further improving the yarn supply effect of the air-jet loom and greatly improving the yarn-changing efficiency and production efficiency of the air-jet loom. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention; Figure 2 is a structural schematic diagram of the slide rail frame in the present invention; Figure 3 is a structural schematic diagram of the connecting rod in the present invention; Figure 4 is a partial structural sectional view of the limiting frame in the present invention; Figure 5 is a structural schematic diagram of the sliding plate in the present invention; Figure 6 is a structural schematic diagram of the push plate in the present invention; Figure 7 is a structural schematic diagram of the extrusion plate in the present invention.

[0021] In the figure: 1. Yarn rack base; 11. Support frame; 12. Rotating shaft; 13. Universal support; 14. Connecting rod; 15. Yarn bobbin; 2. Slide rail frame; 21. Electric slider; 22. Fixed plate; 23. Fixed block; 24. Pushing plate; 3. Limit frame; 31. Limit block; 32. First elastic member; 4. Positioning plate; 41. Extrusion block; 5. Sliding rod; 51. Extrusion plate; 52. Connecting plate; 53. Second elastic member; 6. Side support plate; 61. Sliding plate; 62. Convex block; 7. Fixed frame; 71. Guide tube. Detailed implementation mode

[0022] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation modes.

[0023] As Figures 1 to 7 shown, a rapid yarn changing device for an air-jet loom according to an embodiment of the present invention includes a yarn rack base 1; a support frame 11 is rotatably connected to the top end of the yarn rack base 1; a plurality of rotating shafts 12 are installed on the support frame 11; universal supports 13 are fixedly connected to the outer walls of the plurality of rotating shafts 12; one end of the universal support 13 away from the rotating shaft 12 is fixedly connected to a connecting rod 14 by bolts; a yarn bobbin 15 is slidably connected to the connecting rod 14, and the yarn bobbin 15 is composed of two cylinders with different diameters; a pushing assembly is arranged on the universal support 13, and the pushing assembly is used to push the yarn bobbin 15 for rapid yarn changing; during the production process of the air-jet loom, the yarn rack base 1 is used as the support of the support frame 11, and a plurality of rotating shafts 12 are fixed on the support frame 11 to form the main framework of the rapid yarn changing device of the air-jet loom. A universal support 13 is installed on each rotating shaft 12, and the feeding angle is adjusted by adjusting the rotating shaft 12. Two connecting rods 14 are bolted to a universal support 13. According to the production demand, a plurality of yarn bobbins 15 with yarn are inserted on the two connecting rods 14, and the head and tail of the yarn on the two yarn bobbins 15 are connected. The joint process of the yarn is completed in advance. During production, the pushing assembly is relied on to push the frontmost yarn bobbin 15 to the front end of the connecting rod 14 away from the universal support 13 for yarn feeding and weaving. When the yarn on this yarn bobbin 15 is about to run out, the pushing assembly immediately pushes the rear yarn bobbin 15 to the front end, so that the rear yarn bobbin 15 with yarn can replace the yarn bobbin 15 that has used up the front-end yarn. Since the head and tail of the yarn on the front and rear two yarn bobbins 15 have completed the joint process in advance, the following yarn bobbin 15 can be directly replaced for use, thus achieving the effect of rapid yarn changing and realizing the function of changing yarn without stopping the air-jet loom. At the same time, if the yarn on the two connecting rods 14 is all used up, at this time, it is necessary to stop the machine briefly, rotate the support frame 11 on the yarn rack base 1 by an angle, so that a plurality of new yarn bobbins 15 that have been loaded at another angle are rotated to the yarn feeding position, and the head and tail of the new and old yarns are connected to start the machine, replacing the traditional method of changing yarn with a single yarn bobbin 15, and improving the efficiency of yarn changing and production of the air-jet loom.

[0024] The pushing component includes a slide rail frame 2, an electric slider 21, a fixing plate 22, a fixing block 23 and a pushing plate 24; the two slide rail frames 2 are fixedly connected to the universal support 13 relatively; the electric slider 21 is slidably connected to the slide rail frame 2; the fixing plate 22 is fixedly connected to the outer wall of the electric slider 21; the fixing block 23 is fixedly connected to the fixing plate 22, and the fixing block 23 is located between one ends of the two fixing plates 22; a pushing plate 24 is fixedly connected to one side of the fixing block 23 close to the universal support 13, and the pushing plate 24 fits against the outer wall of the universal support 13 near the connecting rod 14; when pushing and replacing the yarn bobbin 15 on the connecting rod 14 for yarn changing, by using the two electric sliders 21 on the two slide rail frames 2 to slide synchronously, the electric slider 21 can also be replaced with a single matching slider for driving. The sliding of the electric slider 21 drives the two fixing blocks 23 connected between the two ends of the two fixing plates 22 to slide. The two pushing plates 24 closely fit against the outer walls of the universal support 13 and the connecting rod 14 and slide. The two pushing plates 24 push the yarn bobbin 15 at the rearmost end to slide on the connecting rod 14, so that multiple yarn bobbins 15 slide synchronously to replace the yarn bobbin 15 with used yarn, thereby realizing the rapid yarn changing work of the air-jet loom.

[0025] The cross-sectional shape of the connecting rod 14 is I-shaped, the inner wall of the yarn bobbin 15 corresponds to the cross-sectional shape of the connecting rod 14, and the two connecting rods 14 can be connected by bolts; when multiple yarn bobbins 15 are installed on the connecting rod 14, by using the yarn bobbin 15 with an I-shaped inner wall to slide on the connecting rod 14, multiple yarn bobbins 15 are closely attached and fixed to the connecting rod 14, so that the I-shaped connecting rod 14 can limit the angle of the yarn bobbin 15 and ensure that the yarn bobbin 15 does not rotate and remains stable during yarn supply.

[0026] As Figures 1 to 6 shown, a limiting frame 3 is fixedly connected to one end of the connecting rod 14 away from the universal support 13 by bolts; two chutes are oppositely formed on the inner wall of the limiting frame 3; two card slots are oppositely formed on the inner wall of the yarn bobbin 15; a limiting block 31 is slidably connected to the inner wall of the chute, and the limiting block 31 corresponds to the card slot; a matching component is arranged inside the yarn bobbin 15, and the matching component is used for squeezing and sliding down the limiting block 31; when the yarn bobbin 15 at the forefront supplies yarn, the limiting frame 3 is connected to the connecting rod 14 by bolts, and the two limiting blocks 31 are respectively squeezed by two first elastic members 32. The two first elastic members 32 respectively slide upward in the two chutes, so that the two limiting blocks 31 are clamped into the two card slots of the yarn bobbin 15 at the forefront for limiting, improving the stability of the yarn bobbin 15 at the forefront during yarn supply. At the same time, when loading the yarn bobbin 15 onto the connecting rod 14, it is necessary to first press the limiting block 31 to retract into the chute before loading. When ejecting the yarn bobbin 15 with used yarn at the forefront, by pushing multiple yarn bobbins 15 through the electric slider 21, the multiple yarn bobbins 15 use the matching component to eject and replace the yarn bobbin 15 at the forefront.

[0027] The matching component includes a positioning plate 4 and a pressing block 41; the two pressing blocks 41 are respectively fixed on the inner walls of the two clamping grooves; the two positioning plates 4 are fixedly connected to the universal support 13 relatively; when loading the yarn bobbin 15, after pressing the two limiting blocks 31 into the inside of the limiting frame 3, load multiple yarn bobbins 15, and fit the last yarn bobbin 15 against the outer wall of the positioning plate 4 until all the yarn bobbins 15 are loaded. Subsequently, the electric slider 21 drives the push plate 24 to push multiple yarn bobbins 15, and pushes the foremost yarn bobbin 15 to the position of the limiting block 31 for clamping, then the wire supply work can be carried out. At the same time, when the yarn in the foremost yarn bobbin 15 is used up, the electric slider 21 continues to push multiple yarn bobbins 15, and the pressing block 41 inside the foremost yarn bobbin 15 presses the limiting block 31 to slide down, so that the limiting block 31 retracts into the clamping groove until the immediately following yarn bobbin 15 replaces and clamps the foremost yarn bobbin 15, playing a role in quickly replacing the foremost yarn bobbin 15.

[0028] The cross-sectional shape of the limiting block 31 is trapezoidal, and the middle of the trapezoid is convexly arranged; the side of the pressing block 41 close to the limiting block 31 is arc-shaped; when replacing the foremost yarn bobbin 15, the electric slider 21 drives the push plate 24 to push multiple yarn bobbins 15 to slide. The pressing block 41 inside the foremost yarn bobbin 15 relies on its arc surface to fit the slope surface of the trapezoidal limiting block 31, so that the limiting block 31 slides down on the inner wall of the sliding groove, and relies on the convex position in the middle of the limiting block 31 to squeeze the first elastic member 32 to contract until the foremost yarn bobbin 15 is pushed out. The first elastic member 32 elastically presses the limiting block 31 to reset, and clamps the limiting block 31 into the clamping groove of the next yarn bobbin 15 for limiting.

[0029] As Figures 1 to 3 、 Figures 5 to 7 shown, sliding rods 5 are relatively arranged on both sides of the limiting frame 3; at one end of the two sliding rods 5 close to the limiting frame 3, a pressing plate 51 is fixedly connected, and an anti-slip pad is fixedly connected to the outer wall of the pressing plate 51; at the end of the sliding rod 5 away from the pressing plate 51, a connecting plate 52 is fixedly connected; a second elastic member 53 is sleeved on the sliding rod 5 close to the connecting plate 52; connecting components are relatively arranged on both sides of the universal support 13, and the connecting components are used to support the sliding rod 5; when the foremost yarn bobbin 15 supplies wire, the connecting plate 52 fixed by the connecting components pushes the sliding rod 5 to approach the yarn bobbin 15, and the second elastic member 53 synchronously pulls the connecting plate 52, so that the two pressing plates 51 cooperate with the anti-slip pad to closely fit against the outer wall of the foremost yarn bobbin 15 for clamping, improving the stability of the foremost yarn bobbin 15 during wire supply. At the same time, when the next yarn bobbin 15 replaces the foremost yarn bobbin 15, the connecting components slide with the electric slider 21 driving the fixed block 23, and the fixed block 23 releases the clamping at the pressing plate 51, realizing the function of controlling the clamping of the foremost yarn bobbin 15.

[0030] The connecting component includes side support plates 6, a sliding plate 61 and bumps 62; the two side support plates 6 are fixedly connected to both sides of the universal support 13; the sliding plate 61 is slidably connected to the inner wall of the side support plate 6, and a connecting plate 52 is fixedly connected to the sliding plate 61, and a second elastic member 53 is fixedly connected between the connecting plate 52 and the outer wall of the side support plate 6; a plurality of the bumps 62 are fixedly connected to one side of the sliding plate 61 close to the connecting rod 14; when clamping the outer wall of the frontmost yarn bobbin 15, the initial positions of the two pressing plates 51 are relatively attached to clamp the outer wall of the frontmost yarn bobbin 15. Subsequently, during the yarn changing process, the electric slider 21 drives the fixed block 23 to slide, and drives the push plate 24 to push a plurality of yarn bobbins 15. The fixed block 23 slides and presses the bumps 62 to retract into the inner wall of the side support plate 6, so that the sliding plate 61 synchronously drives the connecting plate 52 to pull the sliding rod 5 to slide, and the second elastic member 53 is pulled and stressed. At this time, the pressing plates 51 can move away from the outer wall of the yarn bobbin 15. When the fixed block 23 passes over a bump 62, the next yarn bobbin 15 takes the place of the frontmost yarn bobbin 15, and the elastic force of the second elastic member 53 pulls the connecting plate 52 to reset, and the two pressing plates 51 clamp the outer wall of the next yarn bobbin 15, playing a role in controlling and clamping the outer wall of the frontmost yarn bobbin 15.

[0031] One side of the fixed block 23 close to the bump 62 is arranged in an arc shape; one side of the bump 62 close to the fixed block 23 is arranged in an arc shape; when the fixed block 23 slides along with the electric slider 21, the arc surface of the fixed block 23 approaches and fits the arc surface of the bump 62 for extrusion, so that the bump 62 is extruded by the fixed block 23 into the inner wall of the side support plate 6. By arranging the surfaces of the fixed block 23 and the bump 62 close to each other in an arc shape, the effect of the bump 62 being extruded and sliding into the side support plate 6 can be improved.

[0032] As Figure 1 、 Figure 2 、 Figures 4 to 6 As shown in [relevant figures], fixed frames 7 are fixedly connected to one side of one slide rail frame 2 and the two side support plates 6 far away from the universal support 13; one ends of the three fixed frames 7 close to each other are fixedly connected with a guide cylinder 71; when leading the yarn on the frontmost yarn bobbin 15, using the three fixed frames 7 as the support of the guide cylinder 71, the guide cylinder 71 is fixed directly in front of the frontmost yarn bobbin 15, and the yarn is introduced into the guide cylinder 71 during yarn supply, improving the effect of yarn supply to the air-jet loom.

[0033] Working process: During the production process of an air-jet loom, the yarn rack base 1 serves as the support for the support frame 11. In cooperation with multiple rotating shafts 12 fixed on the support frame 11, the main framework of the air-jet loom's rapid yarn-changing device is formed. A universal support 13 is installed on each rotating shaft 12. By adjusting the rotating shaft 12, the yarn supply angle can be adjusted. Two connecting rods 14 are bolted to a universal support 13. According to the production demand, multiple yarn bobbins 15 with yarn are inserted on the two connecting rods 14, and the heads and tails of the yarns on the two yarn bobbins 15 are connected. The yarn joint process is completed in advance. During production, the frontmost yarn bobbin 15 is pushed by the pushing component to the front end of the connecting rod 14 away from the universal support 13 for yarn supply and weaving. When the yarn on this yarn bobbin 15 is almost used up, the pushing component immediately pushes the rear yarn bobbin 15 to the front end, so that the yarn bobbin 15 that follows and has yarn can replace the yarn bobbin 15 that has used up the front-end yarn. Since the heads and tails of the yarns on the front and rear yarn bobbins 15 have completed the joint process in advance, the following yarn bobbin 15 can directly replace and be used, thus achieving the effect of rapid yarn change and realizing the function of changing yarn without stopping the air-jet loom. At the same time, if all the yarns on the two connecting rods 14 are used up, a short shutdown is required at this time. The support frame 11 on the yarn rack base 1 is rotated, so that multiple new yarn bobbins 15 that have been loaded at another angle are rotated to the yarn supply position, and the heads and tails of the new and old yarns are connected to start the machine. This replaces the traditional method of changing yarn with a single yarn bobbin 15 and improves the efficiency of yarn change and production of the air-jet loom; when pushing and changing the yarn bobbin 15 on the connecting rod 14, two electric sliders 21 on the two slide rail frames 2 slide synchronously. The electric sliders 21 can also be replaced with a single matching slider for driving. The sliding of the electric sliders 21 drives the sliding of two fixed blocks 23 connected between the two ends of the two fixing plates 22. Two push plates 24 slide closely along the outer walls of the universal support 13 and the connecting rod 14. The two push plates 24 push the rearmost yarn bobbin 15 to slide on the connecting rod 14, so that multiple yarn bobbins 15 slide synchronously to replace the yarn bobbin 15 that has used up the yarn, thus realizing the rapid yarn-changing work of the air-jet loom; when multiple yarn bobbins 15 are installed on the connecting rod 14, the yarn bobbins 15 with an I-shaped inner wall slide on the connecting rod 14, and multiple yarn bobbins 15 are closely fixed on the connecting rod 14, so that the I-shaped connecting rod 14 can limit the angle of the yarn bobbin 15 and ensure that the yarn bobbin 15 does not rotate and remains stable during yarn supply; When the frontmost yarn bobbin 15 supplies yarn, the limit frame 3 is connected to the connecting rod 14 by bolts. The two limit blocks 31 are respectively squeezed by the two first elastic members 32. The two first elastic members 32 respectively slide upward in the two chutes, so that the two limit blocks 31 are snapped into the two card slots of the frontmost yarn bobbin 15 for limiting, improving the stability when the frontmost yarn bobbin 15 supplies yarn. At the same time, when loading the yarn bobbin 15 onto the connecting rod 14, it is necessary to first press the limit block 31 to retract into the chute before loading. When ejecting the yarn bobbin 15 with the frontmost yarn used up, the electric slider 21 pushes multiple yarn bobbins 15, and multiple yarn bobbins 15 cooperate with the component to eject and replace the frontmost yarn bobbin 15; when loading the yarn bobbin 15, press the two limit blocks 31 into the inside of the limit frame 3 and then load multiple yarn bobbins 15, and fit the rearmost yarn bobbin 15 against the outer wall of the positioning plate 4 until all the yarn bobbins 15 are loaded. Subsequently, the electric slider 21 drives the push plate 24 to push multiple yarn bobbins 15, and pushes the frontmost yarn bobbin 15 to the limit block 31 for clamping, and then the yarn supply work can be carried out. At the same time, when the yarn of the frontmost yarn bobbin 15 is used up, the electric slider 21 continues to push multiple yarn bobbins 15, and the extrusion block 41 inside the frontmost yarn bobbin 15 squeezes the limit block 31 to slide down, so that the limit block 31 retracts into the card slot until the immediately following yarn bobbin 15 replaces and clamps the frontmost yarn bobbin 15, playing a role in quickly replacing the frontmost yarn bobbin 15; when replacing the frontmost yarn bobbin 15, the electric slider 21 drives the push plate 24 to push multiple yarn bobbins 15 to slide. The extrusion block 41 inside the frontmost yarn bobbin 15 relies on its arc surface to fit the slope surface of the trapezoidal limit block 31, so that the limit block 31 slides down on the inner wall of the chute, and relies on the protruding position in the middle of the limit block 31 to squeeze the first elastic member 32 to contract until the frontmost yarn bobbin 15 is ejected. The first elastic member 32 elastically squeezes the limit block 31 to reset, and snaps the limit block 31 into the card slot of the next yarn bobbin 15 for limiting; When the frontmost yarn bobbin 15 supplies yarn, the connecting plate 52 fixed by the connecting component pushes the sliding rod 5 close to the yarn bobbin 15. The second elastic member 53 synchronously pulls the connecting plate 52, so that the two pressing plates 51 cooperate with the anti-slip pads to closely fit and clamp the outer wall of the frontmost yarn bobbin 15, improving the stability during the yarn supply of the frontmost yarn bobbin 15. At the same time, when the subsequent yarn bobbin 15 replaces the frontmost yarn bobbin 15, the connecting component drives the fixed block 23 to slide along with the electric slider 21. The fixed block 23 releases the clamping at the pressing plate 51, realizing the function of controlling the clamping of the frontmost yarn bobbin 15. When controlling the clamping of the outer wall of the frontmost yarn bobbin 15, the initial positions of the two pressing plates 51 are relatively fitted and clamped on the outer wall of the frontmost yarn bobbin 15. Subsequently, during the yarn changing process, the electric slider 21 drives the fixed block 23 to slide, and drives the push plate 24 to push a plurality of yarn bobbins 15. The fixed block 23 slides and presses the convex block 62 to retract into the inner wall of the side support plate 6, so that the sliding plate 61 synchronously drives the connecting plate 52 to pull the sliding rod 5 to slide. The second elastic member 53 is pulled and stressed. At this time, the pressing plate 51 can move away from the outer wall of the yarn bobbin 15. When the fixed block 23 passes over a convex block 62, the subsequent yarn bobbin 15 replaces the position of the frontmost yarn bobbin 15. The elastic force of the second elastic member 53 pulls the connecting plate 52 to reset, and the two pressing plates 51 clamp the outer wall of the subsequent yarn bobbin 15, playing the role of controlling the clamping of the outer wall of the frontmost yarn bobbin 15. When the fixed block 23 slides along with the electric slider 21, the arc surface of the fixed block 23 approaches and fits the arc surface of the convex block 62 and presses, so that the convex block 62 is pressed by the fixed block 23 into the inner wall of the side support plate 6. By setting the mutually approaching surfaces of the fixed block 23 and the convex block 62 to be arcs, the effect of the convex block 62 being pressed and sliding into the side support plate 6 can be improved. When leading the yarn on the frontmost yarn bobbin 15, using the three fixing frames 7 as the support of the guiding cylinder 71, the guiding cylinder 71 is fixed directly in front of the frontmost yarn bobbin 15. During yarn supply, the yarn is introduced into the guiding cylinder 71 and passed through, improving the effect of yarn supply to the air-jet loom.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A quick yarn changing device for an air jet loom, characterized in that: It includes a yarn frame seat; the top end of the yarn frame seat is rotatably connected to a support frame; a plurality of rotating shafts are installed on the support frame; the outer walls of the plurality of rotating shafts are fixedly connected to universal supports; the end of the universal support away from the rotating shaft is fixedly connected to a connecting rod by bolts; a yarn drum is slidably connected to the connecting rod, and the yarn drum is composed of two cylinders with different diameters; a pushing assembly is arranged on the universal support, and the pushing assembly is used to push the yarn drum for quick yarn change.

2. A quick yarn changing device for an air jet loom according to claim 1, characterized in that: The pushing assembly includes a slide rail frame, an electric slider, a fixed plate, a fixed block and a push plate; the two slide rail frames are relatively fixedly connected to the universal support; the electric slider is slidably connected to the slide rail frame; the fixed plate is fixedly connected to the outer wall of the electric slider; the fixed block is fixedly connected to the fixed plate, and the fixed block is located between one end of the two fixed plates; a push plate is fixedly connected to one side of the fixed block close to the universal support, and the push plate fits the outer wall of the universal support close to the connecting rod.

3. A quick yarn changing device for an air jet loom according to claim 2, characterized in that: The cross-sectional shape of the connecting rod is I-shaped, the inner wall of the yarn tube corresponds to the cross-sectional shape of the connecting rod, and the two connecting rods can be connected by bolts.

4. The rapid yarn changing device of an air jet loom according to claim 2, characterized in that: One end of the connecting rod away from the universal support is fixedly connected to the limit frame by bolts; the inner wall of the limit frame is provided with two slide grooves relative to each other; the inner wall of the yarn tube is provided with two clamping grooves relative to each other; the inner wall of the slide groove is slidably connected to the limit block, and the limit block corresponds to the clamping groove; a matching component is arranged inside the yarn tube, and the matching component is used to squeeze the limit block to slide down.

5. A quick yarn changing device for an air jet loom according to claim 4, characterized in that: The matching component comprises a positioning plate and an extrusion block; the two extrusion blocks are respectively fixed to the inner walls of the two slots; and the two positioning plates are relatively fixed to the universal support.

6. A quick yarn changing device for an air jet loom according to claim 5, characterized in that: The cross-sectional shape of the limiting block is a trapezoid, and the middle part of the trapezoid is convex; the side of the extrusion block close to the limiting block is an arc.

7. The rapid yarn changing device of an air jet loom according to claim 4, characterized in that: Sliding rods are arranged opposite to each other on both sides of the limit frame; an extrusion plate is fixedly connected to one end of the two sliding rods close to the limit frame, and an anti-slip pad is fixedly connected to the outer wall of the extrusion plate; a connecting plate is fixedly connected to one end of the sliding rod away from the extrusion plate; a second elastic member is sleeved on the sliding rod near the connecting plate; connecting components are arranged opposite to each other on both sides of the universal support, and the connecting components are used to support the sliding rods.

8. The rapid yarn changing device of an air jet loom according to claim 7, characterized in that: The connecting assembly includes a side support plate, a sliding plate and a protrusion; the two side support plates are relatively fixed on both sides of the universal support; the sliding plate is slidably connected to the inner wall of the side support plate, and the connecting plate is fixed to the sliding plate, and the second elastic member is fixed between the connecting plate and the outer wall of the side support plate; multiple protrusions are fixed to one side of the sliding plate close to the connecting rod.

9. The rapid yarn changing device of an air jet loom according to claim 2, characterized in that: The side of the fixing block close to the protrusion is set as an arc; the side of the protrusion close to the fixing block is set as an arc.

10. The rapid yarn changing device of an air jet loom according to claim 8, characterized in that: One side of the slide rail frame and two side support plates away from the universal support is fixedly connected with a fixing frame; and one end of the three fixing frames close to each other is fixedly connected with a guide cylinder.

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