A quick yarn changing device for air jet loom

Abstract

The present invention belongs to the technical field of air-jet loom equipment, and specifically is a quick yarn-changing device for an air-jet loom, comprising a creel seat; the top end of the creel 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 a universal support; through the cooperation of the creel seat, the support frame, the rotating shaft and the universal support, it is ensured that the angle of the yarn drum can be flexibly adjusted and the thread supply can be stably provided. The device pushes the yarn drum for quick yarn change by a pushing component, and replaces the traditional single yarn drum installation with a synchronous installation of multiple yarn drums, thereby achieving the effect of quick yarn change without stopping the machine. First, multiple yarn drums with yarn are installed on an I-shaped connecting rod, and a stable structure is used to ensure that the yarn drum will not rotate during thread supply. When the yarn on the front yarn drum is almost used up, the electric slider slides on the slide rail frame, driving the push plate to push the rear yarn drum to slide and replace the yarn drum that has run out of yarn, thereby realizing quick yarn change of the air-jet loom.

Description

Technical Field

[0001] The invention belongs to the technical field of air jet loom equipment, in particular to a quick yarn changing device of an air jet loom. Background Art

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

[0003] A Chinese patent with announcement number CN217399085U discloses a weft supply device for an air-jet loom that can quickly replace weft yarns, including a positioning device, the upper end surface of which is rotatably connected to a rotating device, and the interior of the positioning device is fixedly connected to a lifting device. This application can quickly complete the replacement of weft yarns through the cooperation between the positioning device, the lifting device and the rotating device, thereby improving the working efficiency of the air-jet loom.

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

[0005] To this end, the present invention provides a quick 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, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: the quick yarn changing device of the air-jet loom described in the present invention includes a creel seat; the top end of the creel 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 a universal support; the end of the universal support away from the rotating shaft is fixedly connected to a connecting rod by a bolt; a yarn drum is slidably connected to the connecting rod, and the yarn drum is composed of two cylinders of different diameters; a pushing assembly is provided on the universal support, and the pushing assembly is used to push the yarn drum for quick yarn change.

[0008] Preferably, 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 fixed to the universal support; the electric slider is slidably connected to the slide rail frame; the fixed plate is fixed to the outer wall of the electric slider; the fixed block is fixed to the fixed plate, and the fixed block is located between one end of the two fixed plates; the push plate is fixed to the 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.

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

[0010] Preferably, one end of the connecting rod away from the universal support is fixedly connected to the limit frame by a bolt; the inner wall of the limit frame is provided with two sliding 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 sliding groove is slidably connected to the limit block, and the limit block corresponds to the clamping groove; a matching component is provided inside the yarn tube, and the matching component is used to squeeze the limit block to slide down.

[0011] Preferably, the mating assembly includes a positioning plate and an extrusion block; the two extrusion blocks are fixed to the inner walls of the two slots respectively; and the two positioning plates are relatively fixed to the universal support.

[0012] Preferably, the cross-sectional shape of the limiting block is a trapezoid, and the middle portion of the trapezoid is convex; and the side of the extrusion block close to the limiting block is an arc.

[0013] Preferably, sliding rods are arranged on both sides of the limit frame; the two sliding rods are fixed with extrusion plates at one end close to the limit frame, and the outer wall of the extrusion plate is fixed with an anti-slip pad; the sliding rod is fixed with a connecting plate at one end away from the extrusion plate; a No. 2 elastic member is sleeved on the sliding rod near the connecting plate; connecting components are arranged on both sides of the universal support, and the connecting components are used to support the sliding rod.

[0014] Preferably, 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 No. 2 elastic member is fixed between the connecting plate and the outer wall of the side support plate; multiple protrusions are fixed to the side of the sliding plate close to the connecting rod.

[0015] Preferably, 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.

[0016] Preferably, one of the slide rail frames and the two side support plates are fixedly connected to a fixing frame on one side away from the universal support; and the adjacent ends of the three fixing frames are fixedly connected to a guide cylinder.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The quick yarn changing device of the air-jet loom described in the present invention ensures that the angle of the yarn bobbin can be flexibly adjusted and the thread can be stably fed through the cooperation of the yarn frame seat, the support frame, the rotating shaft and the universal support. The device pushes the yarn bobbin for quick yarn changing by a pushing component, and replaces the traditional single yarn bobbin installation with a plurality of yarn bobbins installed synchronously, thereby achieving the effect of quick 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 thread feeding. When the yarn on the front yarn bobbin is almost used up, the electric slider slides on the slide rail frame, driving the push plate to push the yarn bobbin at the rear to slide and replace the yarn bobbin that has run out of yarn, thereby realizing quick yarn changing of the air-jet loom.

[0019] 2. The quick yarn changing device of the air-jet loom described in the present invention improves the stability of the yarn supply of the front-end yarn bobbin by setting a limit block on the limit frame to be engaged with the front-end yarn bobbin. When changing the yarn, the extrusion block presses the limit block into the slide groove, so that the rear yarn bobbin replaces the front-end yarn bobbin, realizing seamless yarn changing. In addition, in order to further improve the stability of the front-end yarn bobbin when feeding the yarn, two extrusion plates are provided to control the tight clamping or release of the front-end yarn bobbin, ensuring seamless connection during the yarn changing process. During this process, the guide cylinder serves 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

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 It is a structural schematic diagram of the slide rail frame of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the connecting rod in the present invention;

[0024] Figure 4 It is a partial structural cross-sectional view of the limiting frame in the present invention;

[0025] Figure 5 It is a structural schematic diagram of the sliding plate in the present invention;

[0026] Figure 6 It is a structural schematic diagram of the push plate in the present invention;

[0027] Figure 7 It is a structural schematic diagram of the extruded plate in the present invention.

[0028] In the figure: 1. creel seat; 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. push plate; 3. limit frame; 31. limit block; 32. elastic member No. 1; 4. positioning plate; 41. extrusion block; 5. sliding rod; 51. extrusion plate; 52. connecting plate; 53. elastic member No. 2; 6. side support plate; 61. sliding plate; 62. protrusion; 7. fixed frame; 71. guide cylinder. DETAILED DESCRIPTION

[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0030] like Figures 1 to 7 As shown, a quick yarn changing device for an air jet loom according to an embodiment of the present invention comprises a creel seat 1; the top end of the creel seat 1 is rotatably connected to a support frame 11; a plurality of rotating shafts 12 are mounted on the support frame 11; a plurality of universal supports 13 are fixedly connected to the outer walls of the rotating shafts 12; a connecting rod 14 is fixedly connected to the end of the universal support 13 away from the rotating shaft 12 by a bolt; a yarn drum 15 is slidably connected to the connecting rod 14, and the yarn drum 15 is composed of two cylinders of different diameters; a universal support 13 is provided There is a pushing component, which is used to push the yarn tube 15 for fast yarn change; in the production process of the air jet loom, the creel seat 1 is used as the support of the support frame 11, and multiple rotating shafts 12 are fixed on the support frame 11 to form the main structure of the air jet loom fast yarn change device, each rotating shaft 12 is installed with a universal support 13, and the yarn supply angle is adjusted by adjusting the rotating shaft 12. The two connecting rods 14 are bolted to a universal support 13, and multiple yarn tubes 15 with yarn are inserted between the two connecting rods according to production requirements. 14, and connect the ends of the yarns on the two yarn drums 15, completing the yarn joint process in advance. During production, the front end yarn drum 15 is pushed to the front end of the connecting rod 14 away from the universal support 13 by the pushing component for yarn weaving. When the yarn on this yarn drum 15 is about to run out, the pushing component immediately pushes the rear end yarn drum 15 to the front end, so that the yarn drum 15 with yarn following it replaces the yarn drum 15 with yarn at the front end. Since the ends of the yarns on the front and rear yarn drums 15 are joined in advance, At the same time, if all the yarns on the two connecting rods 14 are used up, the machine needs to be stopped for a short time, and the support frame 11 on the creel seat 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 new and old yarns are connected from head to tail to start the machine, which replaces the traditional method of changing yarns with a single yarn bobbin 15 and improves the efficiency of yarn changing and production of the air-jet loom.

[0031] The pushing assembly includes a slide rail frame 2, an electric slider 21, a fixed plate 22, a fixed block 23 and a push plate 24; the two slide rail frames 2 are relatively fixed to the universal support 13; the electric slider 21 is slidably connected to the slide rail frame 2; the fixed plate 22 is fixed to the outer wall of the electric slider 21; the fixed block 23 is fixed to the fixed plate 22, and the fixed block 23 is located between one end of the two fixed plates 22; the fixed block 23 is fixed to a push plate 24 on the side close to the universal support 13, and the push plate 24 is in contact with the outer wall of the universal support 13 close to the connecting rod 14; when the connection When the yarn bobbin 15 on the rod 14 is pushed for yarn change, the two electric sliders 21 on the two slide rail frames 2 slide synchronously. The electric slider 21 can also be replaced with a single matching slider drive. The sliding of the electric slider 21 drives the two fixed blocks 23 connected between the two ends of the two fixed plates 22 to slide. The two push plates 24 slide tightly against the universal support 13 and the outer wall of the connecting rod 14. The two push plates 24 push the yarn bobbin 15 at the rear end to slide on the connecting rod 14, so that multiple yarn bobbins 15 slide synchronously to replace the yarn bobbin 15 that has run out of yarn, thereby realizing rapid yarn change of the air-jet loom.

[0032] The cross-sectional shape of the connecting rod 14 is I-shaped, the inner wall of the yarn drum 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 drums 15 are installed on the connecting rod 14, the yarn drum 15 with the same I-shaped inner wall is slid on the connecting rod 14, and the multiple yarn drums 15 are tightly fixed on the connecting rod 14, so that the I-shaped connecting rod 14 can limit the angle of the yarn drum 15, ensuring that the yarn drum 15 does not rotate and remains stable when supplying thread.

[0033] like Figures 1 to 6 As shown, the end of the connecting rod 14 away from the universal support 13 is fixedly connected to the limit frame 3 by a bolt; the inner wall of the limit frame 3 is relatively provided with two slide grooves; the inner wall of the yarn drum 15 is relatively provided with two card slots; the inner wall of the slide groove is slidably connected to the limit block 31, and the limit block 31 corresponds to the card slot; the interior of the yarn drum 15 is provided with a matching component, which is used to squeeze the limit block 31 downward; when the front end yarn drum 15 is feeding the line, the limit frame 3 is connected to the connecting rod 14 by a bolt, and the two limit blocks 31 are respectively Squeezed by the two No. 1 elastic members 32, the two No. 1 elastic members 32 slide up on the two slide grooves respectively, so that the two limit blocks 31 are clamped in the two clamping grooves of the front end yarn drum 15 to limit the position, thereby improving the stability of the front end yarn drum 15 when feeding the line. At the same time, when the yarn drum 15 is loaded onto the connecting rod 14, it is necessary to press the limit block 31 to retract it into the slide groove before loading. When the front end yarn drum 15 is used up, multiple yarn drums 15 are pushed through the electric slider 21, and multiple yarn drums 15 are used to cooperate with the components to push out and replace the front end yarn drum 15.

[0034] The two limiting blocks 31 are respectively fixed to the inner walls of the two card slots; the two positioning plates 4 are relatively fixed to the universal support 13; when the yarn bobbin 15 is loaded, the two limiting blocks 31 are pressed into the interior of the limiting frame 3 and multiple yarn bobbins 15 are loaded, and the yarn bobbin 15 at the rear end is attached to the outer wall of the positioning plate 4 until all the yarn bobbins 15 are loaded. Then the electric slider 21 drives the pushing plate 24 to push multiple yarn bobbins 15, and the front yarn bobbin 15 is pushed to the limiting block 31 for locking, so that the line feeding work can be carried out. At the same time, when the yarn at the front yarn bobbin 15 is used up, the electric slider 21 continues to push multiple yarn bobbins 15, and the squeezing block 41 inside the front yarn bobbin 15 squeezes the limiting block 31 and slides down, so that the limiting block 31 retracts into the card slot until the next yarn bobbin 15 replaces the front yarn bobbin 15 for locking, thereby playing the role of quickly replacing the front yarn bobbin 15.

[0035] The cross-sectional shape of the limit block 31 is trapezoidal, and the middle part of the trapezoid is convex; the side of the extrusion block 41 close to the limit block 31 is an arc setting; when the front end yarn bobbin 15 is replaced, the electric slider 21 drives the push plate 24 to push multiple yarn bobbins 15 to slide, and the extrusion block 41 inside the front end 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 the inner wall of the slide groove, and relies on the convex position of the middle part of the limit block 31 to squeeze the No. 1 elastic part 32 to contract until the front end yarn bobbin 15 is pushed out, and the No. 1 elastic part 32 elastically squeezes the limit block 31 to reset, and the limit block 31 is clamped into the slot of the next yarn bobbin 15 for limitation.

[0036] like Figures 1 to 3 、 Figures 5 to 7 As shown, sliding rods 5 are relatively arranged on both sides of the limit frame 3; the ends of the two sliding rods 5 close to the limit frame 3 are fixedly connected to the extrusion plate 51, and the outer wall of the extrusion plate 51 is fixedly connected to the anti-slip pad; the end of the sliding rod 5 away from the extrusion plate 51 is fixedly connected to the connecting plate 52; the sliding rod 5 is sleeved with a second elastic member 53 near the connecting plate 52; the universal support 13 is relatively provided with connecting components on both sides, and the connecting components are used to support the sliding rod 5; when the front end bobbin 15 is feeding the yarn, the connecting components are used to support the sliding rod 5. The connecting plate 52 fixed by the component pushes the sliding rod 5 close to the yarn drum 15, and the No. 2 elastic member 53 pulls the connecting plate 52 synchronously, so that the two extrusion plates 51 cooperate with the anti-slip pad to fit tightly against the outer wall of the front end yarn drum 15 for clamping, thereby improving the stability of the front end yarn drum 15 when supplying line. At the same time, when the rear yarn drum 15 replaces the front end yarn drum 15, the connecting component drives the fixed block 23 to slide along with the electric slider 21, and the fixed block 23 releases the clamping at the extrusion plate 51, thereby realizing the function of controlling the clamping of the front end yarn drum 15.

[0037] The connecting assembly includes a side support plate 6, a sliding plate 61 and a protrusion 62; the two side support plates 6 are relatively fixed on 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 the connecting plate 52 is fixed on the sliding plate 61, and the second elastic member 53 is fixed between the connecting plate 52 and the outer wall of the side support plate 6; multiple protrusions 62 are fixed to the side of the sliding plate 61 close to the connecting rod 14; when the outer wall of the front end yarn drum 15 is controlled and clamped, the initial position of the two extrusion plates 51 is relatively fitted to the outer wall of the front end yarn drum 15, and then in the process of changing yarn, the electric slider 21 drives The fixed block 23 slides and drives the push plate 24 to push multiple yarn bobbins 15. The fixed block 23 slides to squeeze the protrusion 62 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 No. 2 elastic member 53 is pulled and stressed. At this time, the squeezing plate 51 can be away from the outer wall of the yarn bobbin 15. When the fixed block 23 passes over a protrusion 62, the rear yarn bobbin 15 replaces the position of the front yarn bobbin 15, and the No. 2 elastic member 53 elastically pulls the connecting plate 52 to reset, and the two squeezing plates 51 clamp the outer wall of the rear yarn bobbin 15, thereby controlling and clamping the outer wall of the front yarn bobbin 15.

[0038] The side of the fixed block 23 close to the protrusion 62 is set as an arc; the side of the protrusion 62 close to the fixed block 23 is set as an arc; when the fixed block 23 slides with the electric slider 21, the arc surface of the fixed block 23 approaches and fits the arc surface of the protrusion 62, so that the protrusion 62 is squeezed to the inner wall of the side support plate 6 by the fixed block 23. By using the fact that the fixed block 23 and the protrusion 62 are close to each other and are set as an arc, the effect of the protrusion 62 being squeezed and slid into the side support plate 6 can be improved.

[0039] like Figure 1 、 Figure 2 、 Figures 4 to 6 As shown, one of the slide rail frames 2 and the two side support plates 6 are fixedly connected to a fixing frame 7 on the side away from the universal support 13; the three fixing frames 7 are fixedly connected to a guide cylinder 71 at one end close to each other; when the yarn on the front end yarn drum 15 is led, the three fixing frames 7 are used as a support for the guide cylinder 71, and the guide cylinder 71 is fixed in front of the front end yarn drum 15. When feeding the yarn, the yarn is introduced into the guide cylinder 71 and passed through, thereby improving the effect of feeding the yarn to the air-jet loom.

[0040] Working process: In the production process of the air-jet loom, the creel seat 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 structure of the air-jet loom quick yarn changing device. A universal support 13 is installed on each rotating shaft 12. The yarn supply 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, multiple yarn tubes 15 with yarn are inserted into the two connecting rods 14, and the ends of the yarns on the two yarn tubes 15 are connected to complete the yarn joint process in advance. During production, the yarn is pushed The assembly pushes the front-end yarn drum 15 to the front end of the connecting rod 14 away from the universal support 13 for yarn weaving. When the yarn on this yarn drum 15 is about to run out, the pushing assembly immediately pushes the rear yarn drum 15 to the front end, so that the yarn drum 15 with yarn following it replaces the yarn drum 15 with yarn running out at the front end. Since the ends of the yarns on the front and rear yarn drums 15 have completed the joint process in advance, the yarn drum 15 that follows can be directly replaced and used, thereby achieving the effect of fast yarn changing and realizing the function of yarn changing of the air jet loom without stopping. At the same time, if all the yarns on the two connecting rods 14 are used up, At this time, it is necessary to stop the machine briefly, rotate the support frame 11 on the creel seat 1 so that multiple new yarn bobbins 15 that have been loaded at another angle are rotated to the yarn supply position, and the new and old yarns are connected at the ends to start the machine, replacing the traditional single yarn bobbin 15 yarn changing method, thereby improving the yarn changing and production efficiency of the air jet loom; when the yarn bobbin 15 on the connecting rod 14 is pushed to change the yarn, the two electric sliders 21 on the two slide rail frames 2 slide synchronously, and the electric slider 21 can also be replaced with a single matching slider drive, and the sliding of the electric slider 21 drives the two fixed blocks 23 connected between the two ends of the fixed plates 22 to slide, and the two push plates The two push plates 24 slide tightly against the universal support 13 and the outer wall of the connecting rod 14, and the two push plates 24 push the rearmost yarn drum 15 to slide on the connecting rod 14, so that the multiple yarn drums 15 slide synchronously to replace the yarn drum 15 that has run out of yarn, thereby realizing the rapid yarn change work of the air jet loom; when the multiple yarn drums 15 are installed on the connecting rod 14, the yarn drum 15 with the same I-shaped inner wall slides on the connecting rod 14, and the multiple yarn drums 15 are tightly fixed on the connecting rod 14, so that the I-shaped connecting rod 14 can limit the angle of the yarn drum 15, ensuring that the yarn drum 15 does not rotate and remains stable when supplying yarn;

[0041] When the front end bobbin 15 is feeding the thread, the limit frame 3 is connected to the connecting rod 14 by a bolt, and the two limit blocks 31 are squeezed by the two No. 1 elastic members 32 respectively, and the two No. 1 elastic members 32 slide up on the two slide grooves respectively, so that the two limit blocks 31 are clamped in the two clamping grooves of the front end bobbin 15 to limit the thread, thereby improving the stability of the front end bobbin 15 when feeding the thread. At the same time, when the bobbin 15 is fed onto the connecting rod 14, it is necessary to press the limit block 31 to retract it into the slide groove before it can be fed. When the yarn drum 15 with the front end yarn used up is ejected, multiple yarn drums 15 are pushed out by the electric slider 21, and the yarn drum 15 with the front end yarn used up is ejected and replaced by the matching assembly; when the yarn drum 15 is loaded, the two limit blocks 31 are pressed into the interior of the limit frame 3, and then multiple yarn drums 15 are loaded, and the yarn drum 15 at the rear end is attached to the outer wall of the positioning plate 4 until all the yarn drums 15 are loaded, and then the electric slider 21 drives the push plate 24 to push multiple yarn drums 15, and the rear end yarn drum 15 is attached to the outer wall of the positioning plate 4 until all the yarn drums 15 are loaded. The front yarn drum 15 is pushed to the limit block 31 for engagement, and then the yarn feeding operation can be carried out. At the same time, when the yarn of the front yarn drum 15 is used up, the electric slider 21 continues to push multiple yarn drums 15, and the squeezing block 41 inside the front yarn drum 15 squeezes the limit block 31 to slide down, so that the limit block 31 retracts into the slot until the next yarn drum 15 replaces the front yarn drum 15 and engages, thereby playing the role of quickly replacing the front yarn drum 15; when the front yarn drum 15 is replaced, The electric slider 21 drives the push plate 24 to push the multiple yarn bobbins 15 to slide. The extrusion block 41 inside the frontmost yarn bobbin 15, with its arc surface, fits the slope of the trapezoidal limit block 31, so that the limit block 31 slides down the inner wall of the slide groove and relies on the protruding position of the middle part of the limit block 31 to squeeze the first elastic member 32 to contract until the frontmost yarn bobbin 15 is pushed out. The elastic force of the first elastic member 32 squeezes the limit block 31 to return to its original position, and the limit block 31 is clamped into the clamping groove of the next yarn bobbin 15 for limiting the position.

[0042] When the front end bobbin 15 is feeding the thread, the connecting plate 52 fixed by the connecting assembly pushes the sliding rod 5 close to the bobbin 15, and the second elastic member 53 pulls the connecting plate 52 synchronously, so that the two squeezing plates 51 cooperate with the anti-slip pad to tightly fit the outer wall of the front end bobbin 15 for clamping, thereby improving the stability of the front end bobbin 15 when feeding the thread. At the same time, when the rear bobbin 15 replaces the front end bobbin 15, the connecting assembly drives the fixed block 23 to slide along with the electric slider 21, and the fixed block 23 releases the clamping at the squeezing plate 51, thereby realizing the control and clamping of the front end bobbin 15; when the outer wall of the front end bobbin 15 is controlled and clamped, the initial position of the two squeezing plates 51 is relatively fitted to the front end bobbin The outer wall of the yarn drum 15 is clamped. 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 multiple yarn drums 15. The fixed block 23 slides to squeeze the protrusion 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 No. 2 elastic member 53 is pulled and stressed. At this time, the squeezing plate 51 can be away from the outer wall of the yarn drum 15. When the fixed block 23 passes over a protrusion 62, the rear yarn drum 15 replaces the position of the front yarn drum 15, and the No. 2 elastic member 53 elastically pulls the connecting plate 52 to reset, and the two squeezing plates 51 clamp the outer wall of the rear yarn drum 15, thereby controlling and clamping the outer wall of the front yarn drum 15.

[0043] 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 protrusion 62, so that the protrusion 62 is squeezed by the fixed block 23 to the inner wall of the side support plate 6. The fact that the fixed block 23 and the protrusion 62 are both arc-shaped can improve the effect of the protrusion 62 being squeezed and slid into the side support plate 6.

[0044] When the yarn on the front end yarn drum 15 is guided, the three fixing frames 7 are used as supports for the guide drum 71, and the guide drum 71 is fixed in front of the front end yarn drum 15. When feeding the yarn, the yarn is introduced into the guide drum 71 and passed through, thereby improving the effect of feeding the yarn to the air jet loom.

[0045] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in 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: The invention comprises a creel seat; the top end of the creel seat is rotatably connected to a support frame; a plurality of rotating shafts are mounted on the support frame; a plurality of universal supports are fixedly connected to the outer walls of the rotating shafts; a connecting rod is fixedly connected to the end of the universal support away from the rotating shaft by a bolt; a yarn drum is slidably connected to the connecting rod, and the yarn drum is composed of two cylinders of different diameters; a pushing assembly is provided on the universal support, and the pushing assembly is used to push the yarn drum for rapid yarn change; 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; the push plate is fixedly connected to the side of the fixed block close to the universal support, and the push plate is in contact with the outer wall of the universal support close to the connecting rod; The cross-sectional shape of the connecting rod is I-shaped, the inner wall of the yarn bobbin corresponds to the cross-sectional shape of the connecting rod, and the two connecting rods can be connected by bolts; One end of the connecting rod away from the universal support is fixedly connected to the limit frame by a bolt; the inner wall of the limit frame is provided with two slide grooves facing each other; the inner wall of the yarn drum is provided with two clamping grooves facing 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; the interior of the yarn drum is provided with a matching component for squeezing the limit block to slide downward; The mating assembly includes a positioning plate and an extrusion block; the two extrusion blocks are respectively fixed to the inner walls of the two slots; the two positioning plates are relatively fixed to the universal support; The cross-sectional shape of the limit block is a trapezoid, and the middle part of the trapezoid is convex; the side of the extrusion block close to the limit block is an arc setting; Sliding rods are arranged 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 the 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 on both sides of the universal support, and the connecting components are used to support the sliding rods; 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 No. 2 elastic member is fixed between the connecting plate and the outer wall of the side support plate; multiple protrusions are fixed to the side of the sliding plate close to the connecting rod.

2. The quick yarn changing device of an air jet loom according to claim 1, characterized in that: The side of the fixing block close to the protrusion is set in an arc shape; the side of the protrusion close to the fixing block is set in an arc shape.

3. The quick yarn changing device of an air jet loom according to claim 1, 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.

Images