Waste yarn recovery device for air jet loom and recovery method of waste yarn recovery device

Abstract

The waste yarn recovery device comprises a waste yarn recovery chamber, an adsorption pipeline is installed above the front end of the waste yarn recovery chamber, and a waste yarn recovery cover is arranged in front of the adsorption pipeline; the two transmission boxes are arranged at the rear ends of the two sides of the waste yarn recovery cover, a driving shaft is installed on an output shaft of the driving motor, connecting shafts are fixedly installed on the two sides of the waste yarn recovery cover, first connecting arms are fixedly installed outside the connecting shafts, and second connecting arms are fixedly installed outside the first connecting arms. A second connecting arm is mounted at one end of the interior of the transmission case in the driving shaft; the scraping plate transmission cavities are formed in the inner walls of the two sides of the adsorption pipeline, the upper scraping plate and the lower scraping plate transversely reciprocate in the adsorption pipeline through a linkage assembly, and the problems that waste yarn is prone to being accumulated in a recycling pipe in the recycling process, so that the recycling effect is affected, the waste yarn distribution position is wide, and the waste yarn recycling efficiency is high are solved. The recovery mechanism is difficult to comprehensively adsorb.

Description

Technical Field

[0001] The invention relates to the technical field of air jet looms, and in particular to a waste yarn recovery device and a recovery method thereof for air jet looms. Background Art

[0002] Air jet loom is a shuttleless loom that uses jet airflow to pull the weft yarn through the shed. It uses air as the weft insertion medium, and the compressed airflow ejected generates friction traction on the weft yarn to bring it through the shed, realizing a high-speed and high-yield weaving process. This loom has high speed, high weft insertion rate, and simple and safe operation. In order to further improve production efficiency and resource utilization, air jet looms are usually equipped with waste yarn recovery devices. There are various designs of waste yarn recovery devices. Some use the cooperation of air jet pipes, collection pipes, yarn suction nozzles and other components to form negative pressure in the channel by air flow to suck in and discharge waste yarn; some use more complex mechanisms, such as waste yarn recycling mechanisms and excess warp yarn recovery and reuse mechanisms, through the synergistic effect of speed change gear box devices, smooth rings, steel reeds, rotatable brushes, scissors and other components, to achieve the recovery and reuse of waste yarn and excess warp yarn.

[0003] For example, the Chinese authorized patent with announcement number CN212771224U "A waste yarn suction device for a jet loom" includes an exhaust fan, an exhaust pipe is installed at the exhaust end of the exhaust fan, two exhaust hoods are installed on the exhaust pipe, filter screens are installed in the exhaust hoods, and a fixed support rod is fixedly connected to the side of the exhaust pipe close to the filter screen, a connecting head is fixedly connected to the fixed support rod, a rotating shaft is rotatably connected to the connecting head, and the rotating shaft passes through the exhaust hood, a mounting frame is installed on one side of the exhaust pipe, and a driving mechanism is installed between the mounting frame and the rotating shaft.

[0004] Although the above-mentioned prior art can recycle the waste yarn generated by the operation of the jet loom, the air humidity will cause the inner wall of the recovery tube to be damp due to the working environment. The waste yarn is easy to adhere to the inner wall of the recovery tube during the recovery process. Over time, the waste yarn mixed with dust is easy to accumulate in the pipeline, thereby affecting the waste yarn recovery effect. In addition, the beating mechanism of the jet loom contacts the yarn at a high frequency, and the waste yarn is distributed in a wide range, which makes it difficult for the recovery mechanism to fully absorb it. Therefore, it does not meet the existing needs. In this regard, we propose a waste yarn recovery device and a recovery method for a jet loom. Summary of the invention

[0005] The object of the present invention is to provide a waste yarn recovery device and a recovery method for an air jet loom, so as to solve the problems proposed in the above background technology that waste yarn is easily accumulated in a recovery tube during the recovery process, thereby affecting the recovery effect, and the waste yarn is widely distributed, making it difficult for the recovery mechanism to fully absorb it.

[0006] To achieve the above object, the present invention provides the following technical solution: a waste yarn recovery device for an air jet loom, comprising a waste yarn recovery chamber, an adsorption pipe is installed above the front end of the waste yarn recovery chamber, and the adsorption pipe is connected to the inner cavity of the waste yarn recovery chamber, and a waste yarn recovery cover is arranged in front of the adsorption pipe; and further comprising:

[0007] Two transmission boxes are arranged at the rear ends of both sides of the waste yarn recovery cover, wherein a driving motor is fixedly installed on the side of one of the transmission boxes, a driving shaft is installed on the output shaft of the driving motor, and the other end of the driving shaft extends to the inside of the transmission box on the other side, and connecting shafts extending to the inside of the transmission box are fixedly installed on both sides of the waste yarn recovery cover, a first connecting arm is fixedly installed on the outside of the connecting shaft, and a second connecting arm is installed on one end of the transmission box inside the driving shaft, the second connecting arm is fixed to the driving shaft, and one end of the second connecting arm is connected to the first connecting arm through a rotating shaft;

[0008] A scraper transmission chamber is arranged in the inner walls on both sides of the adsorption pipe, an upper scraper is slidably installed on one side of the upper end of the adsorption pipe, and a lower scraper is slidably installed on the other side of the lower end of the adsorption pipe, and the outer walls of the upper scraper and the lower scraper are in contact with the inner wall of the adsorption pipe, and the upper scraper and the lower scraper move back and forth laterally inside the adsorption pipe through a linkage component.

[0009] Preferably, the linkage assembly includes fan gears, which are arranged at both ends of the driving shaft, and a transmission shaft is rotatably installed at the rear end of the transmission box, and the other end of the transmission shaft extends to the outside of the transmission box, and a transmission gear is fixedly installed at one end of the transmission shaft located inside the transmission box, and the outer gear ring of the fan gear is meshed and connected with the transmission gear, and a transmission rack plate is slidingly limited at the bottom of the inner cavity of the transmission box, and the transmission gear is meshed and connected with the transmission rack plate, and the outer gear ring of the fan gear is meshed and connected with the transmission rack plate after losing meshing with the transmission gear, and slots are provided below the front and rear ends of the transmission box.

[0010] Preferably, a driving pulley is installed at one end of the transmission shaft located outside the transmission box, and driven pulleys are rotatably installed at the front ends of both sides of the adsorption pipe, and the driving pulley and the driven pulley are connected by a first belt.

[0011] Preferably, drive rollers are rotatably installed at the front and rear of the scraper transmission chamber, and the two drive rollers are connected by a second belt. One end of the front end drive roller is fixed to the driven pulley, and the two ends of the upper scraper are respectively fixed to the side of the upper second belt, and the two ends of the lower scraper are respectively fixed to the side of the lower second belt.

[0012] Preferably, a pressure plate is installed at the upper end of the inner cavity of the waste yarn recovery chamber, a waste yarn compacting mechanism is fixedly installed at the middle position of the upper end surface of the waste yarn recovery chamber, a motor is installed at the top of the waste yarn compacting mechanism, a screw is installed on the output shaft of the motor, a slide groove is arranged inside the waste yarn compacting mechanism, a lifting rod is provided at the internal sliding limit of the slide groove, and the bottom of the lifting rod is fixed to the upper end surface of the pressure plate, the lower end of the screw rod extends into the inner screw hole of the lifting rod, and the external thread of the screw rod is adapted to the inner screw hole of the lifting rod.

[0013] Preferably, a supporting mesh plate is installed at the lower end of the waste yarn recovery chamber, and the supporting mesh plate divides the interior of the waste yarn recovery chamber into two upper and lower cavities. A negative pressure fan is installed below the rear end of the waste yarn recovery chamber, and the negative pressure end of the negative pressure fan extends to the lower cavity of the waste yarn recovery chamber.

[0014] Preferably, an elastic sealing tube is provided between the adsorption pipe and the waste yarn recovery cover, the elastic sealing tube is respectively connected with the adsorption pipe and the waste yarn recovery cover, and the elastic sealing tube is adhered and fixed at the connection between the adsorption pipe and the waste yarn recovery cover.

[0015] Preferably, collection boxes are installed on both sides of the bottom of the adsorption pipe, the upper opening of the collection box is communicated with the inner cavity of the adsorption pipe, and the collection box and the bottom of the adsorption pipe are sealed and fixed by bolts.

[0016] Preferably, a sealed door is installed on one side of the waste yarn recovery chamber.

[0017] The recycling method of the waste yarn recycling device for an air jet loom comprises the following steps:

[0018] Step 1: Align the waste yarn recovery cover with the waste yarn generating part of the air jet loom, and turn on the negative pressure fan to quickly discharge the air inside the waste yarn recovery chamber. At the same time, the air outside the waste yarn recovery cover is continuously replenished into the negative pressure fan through the adsorption pipe, forming a higher pressure difference with the outside world. Then, the waste yarn outside the waste yarn recovery cover is sucked into the waste yarn recovery chamber along with the air, and is accumulated above the supporting mesh plate inside the waste yarn recovery chamber.

[0019] Step 2: Turn on the driving motor on one side of the transmission box to drive the driving shaft to rotate at high speed. The first connecting arm drives the waste yarn recovery cover to swing up and down through the connecting shaft as the second connecting arm rotates, thereby increasing the coverage of the waste yarn recovery cover at the waste yarn generating part of the air jet loom;

[0020] Step 3: When the driving motor drives the first connecting arm to rotate, the sector gear is also driven to rotate. When the outer gear ring of the sector gear meshes with the transmission rack plate, the transmission rack plate is driven to move in a horizontal direction. Under the meshing of the transmission rack plate and the transmission gear, the transmission gear is driven to rotate forward. The transmission shaft on the transmission gear shaft drives the active pulley to rotate. Under the transmission action of the belt, the driven pulley is driven to rotate. The transmission shaft drives a transmission roller to rotate. Under the cooperation with another transmission roller, the movement of the second belt is formed. The second belt located on the upper side drives the upper scraper to move toward the rear end, and the second belt located on the lower side drives the lower scraper to move toward the front end.

[0021] Step 4: After the fan gear loses the meshing with the transmission rack plate, it meshes with the transmission gear, causing the transmission gear to rotate in the opposite direction. At this time, with the cooperation of the pulley, the transmission roller in the scraper transmission cavity is reversed, causing the upper scraper and the lower scraper to be horizontally reset to the initial position. The two scrapers are in a C-shaped structure, contacting the inner wall of the adsorption pipe, cleaning the waste yarn and dust impurities adhering to the inner wall of the adsorption pipe, and accumulating them in the collection box under continuous pushing;

[0022] Step 5. After the recycling work is completed, turn on the motor, and its output shaft drives the screw to rotate. The thread cooperates with the lifting rod to drive the pressure plate to descend, squeezing the waste yarn above the supporting mesh plate to keep it in a solid state. Finally, the staff can take out the compacted waste yarn by opening the sealed door.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention provides an up-and-down swinging waste yarn recovery cover, aligns the waste yarn recovery cover with the waste yarn generating part of the air jet loom, and turns on the negative pressure fan to quickly discharge the air in the waste yarn recovery chamber, and at the same time, the air outside the waste yarn recovery cover is continuously supplemented with the air inlet fan through the adsorption pipe, so as to form a higher pressure difference with the outside world, so that the waste yarn outside the waste yarn recovery cover is sucked into the waste yarn recovery chamber along with the air, and during the adsorption process, the driving motor on one side of the transmission box is turned on to drive the driving shaft to rotate at a high speed, and the second connecting arm on the driving shaft is rotatably connected with the first connecting arm on the waste yarn recovery cover, and the first connecting arm drives the waste yarn recovery cover to swing up and down through the connecting shaft as the second connecting arm rotates, thereby improving the coverage of the waste yarn recovery cover on the waste yarn generating part of the air jet loom, and the design significantly improves the waste yarn recovery efficiency, reduces the scattering and accumulation of waste yarn in the workshop, and reduces the cleaning cost; secondly, by dynamically adjusting the position of the waste yarn recovery cover, the comprehensiveness of waste yarn recovery is ensured, and the recycling omission caused by the wide distribution of waste yarn is avoided.

[0025] 2. The present invention is provided with an adsorption pipe self-cleaning structure, and the waste yarn recovery device realizes synchronous and efficient cooperation with the swing-type waste yarn recovery cover. When the driving motor drives the first connecting arm to rotate, the fan gear rotates and meshes with the transmission rack plate, thereby driving the transmission rack plate to move horizontally. This action then drives the transmission roller located on the inner wall of the adsorption pipe to rotate through the transmission action of the transmission gear and the belt. The transmission rollers on the upper and lower sides respectively drive the upper scraper and the lower scraper to move in opposite directions through the second belt, forming a C-shaped scraper combination that fits tightly against the inner wall of the adsorption pipe. This design can not only clean the waste yarn and dust impurities on the inner wall of the adsorption pipe in real time during the waste yarn recovery process to prevent blockage and accumulation, but also ensure that after the fan gear loses meshing with the transmission rack plate, the scraper moves in the opposite direction through meshing with the transmission gear and resets to the initial position. This self-cleaning mechanism not only improves the continuity and efficiency of waste yarn recovery, but also reduces the frequency and difficulty of manual cleaning, effectively prolongs the service life of the adsorption pipe, and maintains the overall performance and stability of the waste yarn recovery system, and finally realizes the integrated and efficient operation of waste yarn recovery and pipeline cleaning.

[0026] 3. The present invention is provided with a waste yarn compacting mechanism. By providing a waste yarn compacting mechanism, the waste yarn recovery device realizes efficient stacking and compacting of waste yarn. The adsorbed waste yarn is accumulated on the supporting mesh plate inside the waste yarn recovery chamber through the adsorption pipe. After the recovery work is completed, the motor is started, and its output shaft drives the screw to rotate. By utilizing the close fit between the external thread of the screw and the internal screw hole of the lifting rod, and the precise guidance of the lifting rod by the slide groove, the lifting rod drives the pressing plate to descend steadily, and the waste yarn on the supporting mesh plate is strongly squeezed to form a compact and regular stacking state. This design not only facilitates the staff to easily take out the compacted waste yarn by opening the sealing door later, but also significantly improves the storage density and transportation efficiency of the waste yarn, reduces the space occupied by the waste yarn, and also facilitates the subsequent treatment and reuse of the waste yarn, improving the practicality and economy of the entire waste yarn recovery system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A perspective view of the present invention;

[0028] Figure 2 A top view of the present invention;

[0029] Figure 3 It is a schematic diagram of the internal structure of the transmission box of the present invention;

[0030] Figure 4 It is a schematic diagram of the internal structure of the adsorption pipeline of the present invention;

[0031] Figure 5 It is a schematic diagram of the internal structure of the waste yarn recovery chamber of the present invention.

[0032] In the figure: 1. waste yarn recovery chamber; 2. adsorption duct; 3. waste yarn recovery cover; 4. transmission box; 5. slot; 6. elastic sealing tube; 7. waste yarn compacting mechanism; 8. sealing door; 9. negative pressure fan; 10. motor; 11. connecting shaft; 12. first connecting arm; 13. driving shaft; 14. second connecting arm; 15. sector gear; 16. transmission gear; 17. transmission shaft; 18. transmission rack plate; 19. driving pulley; 20. driven pulley; 21. first belt; 22. scraper transmission chamber; 23. transmission roller; 24. second belt; 25. upper scraper; 26. lower scraper; 27. pressure plate; 28. lifting rod; 29. ​​slide; 30. screw; 31. supporting mesh plate; 32. recovery trough; 33. collecting box. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] See also Figure 1-5 The present invention provides an embodiment: a waste yarn recovery device for an air jet loom, comprising a waste yarn recovery chamber 1, an adsorption pipe 2 is installed above the front end of the waste yarn recovery chamber 1, and the adsorption pipe 2 is connected to the inner cavity of the waste yarn recovery chamber 1, and a waste yarn recovery cover 3 is arranged in front of the adsorption pipe 2; and further comprising:

[0035] Two transmission boxes 4 are arranged at the rear ends of both sides of the waste yarn recovery cover 3, a driving motor is fixedly installed on the side of one of the transmission boxes 4, a driving shaft 13 is installed on the output shaft of the driving motor, and the other end of the driving shaft 13 extends to the inside of the transmission box 4 on the other side, and a connecting shaft 11 extending to the inside of the transmission box 4 is fixedly installed on both sides of the waste yarn recovery cover 3, a first connecting arm 12 is fixedly installed on the outside of the connecting shaft 11, and a second connecting arm 14 is installed on one end of the driving shaft 13 inside the transmission box 4, the second connecting arm 14 is fixed to the driving shaft 13, and one end of the second connecting arm 14 is connected to the first connecting arm 12 through a rotating shaft;

[0036] The scraper transmission chamber 22 is arranged in the inner walls on both sides of the adsorption pipe 2, and an upper scraper 25 is slidably installed on one side of the upper end of the adsorption pipe 2, and a lower scraper 26 is slidably installed on the other side of the lower end of the adsorption pipe 2, and the outer walls of the upper scraper 25 and the lower scraper 26 are in contact with the inner wall of the adsorption pipe 2, and the upper scraper 25 and the lower scraper 26 move back and forth laterally inside the adsorption pipe 2 through a linkage component.

[0037] See also Figure 2 and Figure 3The linkage assembly includes a fan-shaped gear 15, which is arranged at both ends of the driving shaft 13. A transmission shaft 17 is rotatably installed at the rear end of the transmission box 4, and the other end of the transmission shaft 17 extends to the outside of the transmission box 4. A transmission gear 16 is fixedly installed at one end of the transmission shaft 17 located inside the transmission box 4, and the outer gear ring of the fan-shaped gear 15 is meshed and connected with the transmission gear 16. A transmission rack plate 18 is slidingly limited at the bottom of the inner cavity of the transmission box 4, and the transmission gear 16 is meshed and connected with the transmission rack plate 18. After the outer gear ring of the fan-shaped gear 15 loses meshing with the transmission gear 16, it is meshed and connected with the transmission rack plate 18. Slots 5 are provided at the bottom of the front and rear ends of the transmission box 4. This design significantly improves the recovery efficiency of waste yarn, reduces the scattering and accumulation of waste yarn in the workshop, and reduces the cleaning cost; secondly, by dynamically adjusting the position of the waste yarn recovery cover, the comprehensiveness of waste yarn recovery is ensured, and recycling omissions caused by the wide distribution of waste yarn are avoided.

[0038] See also Figure 2 , Figure 3 and Figure 4 A driving pulley 19 is installed at one end of the transmission shaft 17 located outside the transmission box 4, and driven pulleys 20 are rotatably installed at the front ends of both sides of the adsorption pipe 2, and the driving pulley 19 and the driven pulley 20 are connected by a first belt 21. A transmission roller 23 is rotatably installed at the front and rear of the scraper transmission chamber 22, and the two transmission rollers 23 are connected by a second belt 24. One end of the front transmission roller 23 is fixed to the driven pulley 20, and the two ends of the upper scraper 25 are respectively fixed to the side of the upper second belt 24, and the two ends of the lower scraper 26 are respectively fixed to the side of the upper second belt 24. The ends are fixed to the side of the second belt 24 at the lower side, and collection boxes 33 are installed on both sides of the bottom of the adsorption pipe 2. The upper opening of the collection box 33 is connected to the inner cavity of the adsorption pipe 2, and the collection box 33 is sealed and fixed to the bottom of the adsorption pipe 2 by bolts. This design can not only clean the waste yarn and dust impurities on the inner wall of the adsorption pipe in real time during the waste yarn recovery process to prevent blockage and accumulation, but also ensure that after the fan gear 15 loses engagement with the transmission rack plate 18, the scraper moves in the opposite direction through engagement with the transmission gear 16 and resets to the initial position. This self-cleaning mechanism not only improves the continuity and efficiency of waste yarn recovery, but also reduces the frequency and difficulty of manual cleaning, effectively extending the service life of the adsorption pipe.

[0039] See also Figure 1 and Figure 5A pressing plate 27 is installed at the upper end of the inner cavity of the waste yarn recovery chamber 1, and a waste yarn compacting mechanism 7 is fixedly installed at the middle position of the upper end surface of the waste yarn recovery chamber 1. A motor 10 is installed at the top of the waste yarn compacting mechanism 7, and a screw 30 is installed on the output shaft of the motor 10. A slide groove 29 is arranged inside the waste yarn compacting mechanism 7, and a lifting rod 28 is provided in the internal sliding limit of the slide groove 29, and the bottom of the lifting rod 28 is fixed to the upper end surface of the pressing plate 27, and the lower end of the screw 30 extends to the inner screw hole of the lifting rod 28, and the outer thread of the screw 30 is aligned with the inner thread of the lifting rod 28. The holes are adapted to each other, a supporting mesh plate 31 is installed at the lower end of the waste yarn recovery chamber 1, and the supporting mesh plate 31 divides the interior of the waste yarn recovery chamber 1 into two upper and lower cavities, a negative pressure fan 9 is installed below the rear end of the waste yarn recovery chamber 1, and the negative pressure end of the negative pressure fan 9 extends to the lower cavity of the waste yarn recovery chamber 1, and a sealing door 8 is installed on one side of the waste yarn recovery chamber 1, which significantly improves the storage density and transportation efficiency of the waste yarn, reduces the space occupied by the waste yarn, and also facilitates the subsequent treatment and reuse of the waste yarn, thereby improving the practicality and economy of the entire waste yarn recovery system.

[0040] See also Figure 1 and Figure 2 An elastic sealing tube 6 is arranged between the adsorption pipe 2 and the waste yarn recovery cover 3. The elastic sealing tube 6 is respectively connected with the adsorption pipe 2 and the waste yarn recovery cover 3, and the elastic sealing tube 6 is adhered and fixed to the connection between the adsorption pipe 2 and the waste yarn recovery cover 3.

[0041] The recycling method of the waste yarn recycling device for an air jet loom comprises the following steps:

[0042] Step 1: by aligning the waste yarn recovery cover 3 with the waste yarn generating part of the air jet loom, and turning on the negative pressure fan 9, the air inside the waste yarn recovery chamber 1 is quickly discharged, and at the same time, the air outside the waste yarn recovery cover 3 is continuously replenished into the negative pressure fan 9 through the adsorption pipe 2, forming a higher pressure difference with the outside, so that the waste yarn outside the waste yarn recovery cover 3 is sucked into the waste yarn recovery chamber 1 along with the air, and is accumulated above the supporting mesh plate 31 inside the waste yarn recovery chamber 1;

[0043] Step 2: Turn on the driving motor on one side of the transmission box 4 to drive the driving shaft 13 to rotate at high speed. The first connecting arm 12 drives the waste yarn recovery cover 3 to swing up and down through the connecting shaft 11 as the second connecting arm 14 rotates, thereby increasing the coverage of the waste yarn recovery cover at the waste yarn generating part of the air jet loom;

[0044] Step 3, when the driving motor drives the first connecting arm 12 to rotate, the sector gear 15 is also driven to rotate. When the outer gear ring of the sector gear 15 meshes with the transmission rack plate 18, the transmission rack plate 18 is driven to move in a horizontal direction. Under the meshing of the transmission rack plate 18 and the transmission gear 16, the transmission gear 16 is driven to rotate forward. The transmission shaft 17 on the shaft of the transmission gear 16 drives the active pulley 19 to rotate, and drives the driven pulley 20 to rotate under the transmission action of the belt. The transmission shaft 17 drives a transmission roller 23 to rotate, and forms the movement of the second belt 24 in cooperation with another transmission roller 23. The second belt 24 located on the upper side drives the upper scraper 25 to move toward the rear end, and the second belt 24 located on the lower side drives the lower scraper 26 to move toward the front end;

[0045] Step 4: After the sector gear 15 loses the meshing with the transmission rack plate 18, it meshes with the transmission gear 16, causing the transmission gear 16 to rotate in the opposite direction. At this time, with the cooperation of the pulley, the transmission roller 23 in the scraper transmission chamber 22 is reversed, causing the upper scraper 25 and the lower scraper 26 to be horizontally reset to the initial position. The two scrapers are in a C-shaped structure and contact the inner wall of the adsorption pipe 2 to clean the waste yarn and dust impurities adhering to the inner wall of the adsorption pipe 2, and accumulate them in the collection box 33 under continuous pushing;

[0046] Step 5. After the recycling work is completed, the motor 10 is turned on, and its output shaft drives the screw 30 to rotate. The screw thread cooperates with the lifting rod 28 to drive the pressing plate 27 to descend, and the waste yarn above the supporting mesh plate 31 is squeezed to keep it in a solid state. Finally, the staff can take out the compacted waste yarn by opening the sealing door 8.

[0047] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A waste yarn recovery device for an air jet loom, comprising a waste yarn recovery chamber (1), an adsorption pipe (2) being installed above the front end of the waste yarn recovery chamber (1), the adsorption pipe (2) being connected to the inner cavity of the waste yarn recovery chamber (1), and a waste yarn recovery cover (3) being arranged in front of the adsorption pipe (2); Features: Also includes: Two transmission boxes (4) are arranged at the rear ends of both sides of the waste yarn recovery cover (3), a driving motor is fixedly installed on the side of one of the transmission boxes (4), a driving shaft (13) is installed on the output shaft of the driving motor, and the other end of the driving shaft (13) extends to the inside of the transmission box (4) on the other side, and a connecting shaft (11) extending to the inside of the transmission box (4) is fixedly installed on both sides of the waste yarn recovery cover (3), a first connecting arm (12) is fixedly installed on the outside of the connecting shaft (11), and a second connecting arm (14) is installed at one end of the driving shaft (13) inside the transmission box (4), the second connecting arm (14) is fixed to the driving shaft (13), and one end of the second connecting arm (14) is connected to the first connecting arm (12) through a rotating shaft; A scraper transmission chamber (22) is arranged in the inner walls of both sides of the adsorption pipe (2); an upper scraper (25) is slidably mounted on one side of the upper end of the adsorption pipe (2); a lower scraper (26) is slidably mounted on the other side of the lower end of the adsorption pipe (2); and the outer walls of the upper scraper (25) and the lower scraper (26) are in contact with the inner wall of the adsorption pipe (2); the upper scraper (25) and the lower scraper (26) move back and forth laterally inside the adsorption pipe (2) through a linkage assembly.

2. A waste yarn recovery device for an air jet loom according to claim 1, characterized in that: The linkage assembly comprises a sector gear (15) which is arranged at both ends of the drive shaft (13); a transmission shaft (17) is rotatably mounted at the rear end of the transmission box (4), and the other end of the transmission shaft (17) extends to the outside of the transmission box (4); a transmission gear (16) is fixedly mounted at one end of the transmission shaft (17) located inside the transmission box (4), and the outer toothed ring of the sector gear (15) is meshingly connected with the transmission gear (16); a transmission rack plate (18) is slidingly limited at the bottom of the inner cavity of the transmission box (4), and the transmission gear (16) is meshingly connected with the transmission rack plate (18); the outer toothed ring of the sector gear (15) is meshingly connected with the transmission gear (16) after losing meshing with the transmission gear (16); and slots (5) are provided below the front and rear ends of the transmission box (4).

3. A waste yarn recovery device for an air jet loom according to claim 2, characterized in that: A driving pulley (19) is installed at one end of the transmission shaft (17) located outside the transmission box (4), and driven pulleys (20) are rotatably installed at the front ends of both sides of the adsorption pipe (2), and the driving pulley (19) and the driven pulley (20) are connected by a first belt (21).

4. A waste yarn recovery device for an air jet loom according to claim 3, characterized in that: Transmission rollers (23) are rotatably installed at the front and rear of the scraper transmission chamber (22); the two transmission rollers (23) are connected by a second belt (24); one end of the transmission roller (23) at the front end is fixed to the driven pulley (20); the two ends of the upper scraper (25) are respectively fixed to the side of the upper second belt (24); and the two ends of the lower scraper (26) are respectively fixed to the side of the lower second belt (24).

5. A waste yarn recovery device for an air jet loom according to claim 4, characterized in that: A pressure plate (27) is installed at the upper end of the inner cavity of the waste yarn recovery chamber (1), and a waste yarn compacting mechanism (7) is fixedly arranged at the middle position of the upper end surface of the waste yarn recovery chamber (1). A motor (10) is installed at the top end of the waste yarn compacting mechanism (7), and a screw (30) is installed on the output shaft of the motor (10). A slide groove (29) is arranged inside the waste yarn compacting mechanism (7), and a lifting rod (28) is provided in the internal sliding limit of the slide groove (29). The bottom of the lifting rod (28) is fixed to the upper end surface of the pressure plate (27), and the lower end of the screw (30) extends into the internal screw hole of the lifting rod (28), and the external thread of the screw (30) is matched with the internal screw hole of the lifting rod (28).

6. A waste yarn recovery device for an air jet loom according to claim 5, characterized in that: A supporting mesh plate (31) is installed at the lower end of the waste yarn recovery chamber (1), and the supporting mesh plate (31) divides the interior of the waste yarn recovery chamber (1) into two upper and lower cavities. A negative pressure fan (9) is installed below the rear end of the waste yarn recovery chamber (1), and the negative pressure end of the negative pressure fan (9) extends to the lower cavity of the waste yarn recovery chamber (1).

7. A waste yarn recovery device for an air jet loom according to claim 6, characterized in that: An elastic sealing tube (6) is provided between the adsorption pipe (2) and the waste yarn recovery cover (3); the elastic sealing tube (6) is respectively connected to the adsorption pipe (2) and the waste yarn recovery cover (3); and the elastic sealing tube (6) is adhesively fixed to the connection between the adsorption pipe (2) and the waste yarn recovery cover (3).

8. The waste yarn recovery device for an air jet loom according to claim 7, characterized in that: Collection boxes (33) are installed on both sides of the bottom of the adsorption pipe (2); the upper opening of the collection box (33) is connected to the inner cavity of the adsorption pipe (2); and the collection box (33) and the bottom of the adsorption pipe (2) are sealed and fixed by bolts.

9. A waste yarn recovery device for an air jet loom according to claim 8, characterized in that: A sealing door (8) is installed on one side of the waste yarn recovery chamber (1).

10. The recycling method of the waste yarn recycling device for an air jet loom according to claim 9, characterized in that: The steps include: Step 1: by aligning the waste yarn recovery cover (3) with the waste yarn generating part of the air jet loom, the negative pressure fan (9) is turned on to quickly discharge the air inside the waste yarn recovery chamber (1), and at the same time, the air outside the waste yarn recovery cover (3) is continuously replenished into the negative pressure fan (9) through the adsorption pipe (2), so as to form a high pressure difference with the outside, so that the waste yarn outside the waste yarn recovery cover (3) is sucked into the waste yarn recovery chamber (1) along with the air, and is accumulated above the supporting mesh plate (31) inside the waste yarn recovery chamber (1); Step 2: Turn on the driving motor on one side of the transmission box (4) to drive the driving shaft (13) to rotate at high speed, and the first connecting arm (12) drives the waste yarn recovery cover (3) to swing up and down through the connecting shaft (11) as the second connecting arm (14) rotates, thereby increasing the coverage of the waste yarn recovery cover on the waste yarn generating part of the air jet loom; Step 3, the driving motor drives the first connecting arm (12) to rotate, and at the same time drives the sector gear (15) to rotate. When the outer gear ring of the sector gear (15) meshes with the transmission rack plate (18), the transmission rack plate (18) is driven to move in a horizontal direction. Under the meshing of the transmission rack plate (18) and the transmission gear (16), the transmission gear (16) is driven to rotate in the positive direction. The transmission shaft (17) on the shaft of the transmission gear (16) drives the driving pulley (19) to rotate, and drives the driven pulley (20) to rotate under the transmission action of the belt. The transmission shaft (17) drives a transmission roller (23) to rotate, and forms the movement of the second belt (24) in cooperation with another transmission roller (23). The second belt (24) located on the upper side drives the upper scraper (25) to move toward the rear end, and the second belt (24) located on the lower side drives the lower scraper (26) to move toward the front end; Step 4: After the sector gear (15) loses the meshing with the transmission rack plate (18), it meshes with the transmission gear (16), causing the transmission gear (16) to rotate in the opposite direction. At this time, with the cooperation of the pulley, the transmission roller (23) in the scraper transmission chamber (22) is reversed, causing the upper scraper (25) and the lower scraper (26) to be horizontally reset to their initial positions. The two scrapers are in a C-shaped structure and contact the inner wall of the adsorption pipe (2), cleaning the waste yarn and dust impurities adhering to the inner wall of the adsorption pipe (2), and accumulating them in the collection box (33) under continuous pushing; Step 5: After the recovery work is completed, the motor (10) is turned on, and its output shaft drives the screw (30) to rotate. The screw thread cooperates with the lifting rod (28) to drive the pressing plate (27) to descend, thereby squeezing the waste yarn above the supporting mesh plate (31) to keep it in a solid state. Finally, the staff can take out the compacted waste yarn by opening the sealing door (8).

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