Weft insertion structure for air jet loom

Abstract

The weft insertion structure comprises a working table, a going part is rotationally installed on one side of the working table, a first nozzle is fixedly connected to one side of the upper end of the going part, a fixing box is fixedly connected to one side of the outer surface of the first nozzle, a fixing strip is connected to the interior of the fixing box in a sliding mode, and a weft insertion hole is formed in the fixing strip. The outer surface of the fixing strip is slidably connected with a plurality of mounting lugs, and one side of each mounting lug is fixedly connected with the inner wall of the fixing box. The second nozzle and the first nozzle are combined together by rotating the second nozzle, the plurality of L-shaped fixing blocks on the connecting plate are respectively moved into the plurality of mounting grooves, and the tension of the fixing strips and the tension of the tension springs are loosened, so that the fixing strips slide on the mounting lugs, and the L-shaped fixing blocks slide in the sliding grooves; the nozzle fixing device is simple in structure and convenient to operate, and the mounting and dismounting speed of the second nozzle and the first nozzle is greatly increased.

Description

Technical Field

[0001] The utility model relates to the technical field of air jet looms, in particular to a weft insertion structure for air jet looms. Background Art

[0002] An air jet loom is a shuttleless loom that uses a jet of air to pull the weft yarn through the shed. Air is used as the weft insertion medium, and the compressed air jet generates frictional traction on the weft yarn, thereby pulling the weft yarn through the shed. The weft insertion structure of the air jet loom is a key component of the air jet loom, which is responsible for pulling the weft yarn through the shed to complete the weaving process.

[0003] In the prior art, for example, Chinese patent CN212925310U discloses a weft insertion structure of an air-jet loom, comprising a frame, a sley rotatably mounted on the frame, a main nozzle provided on the sley, the main nozzle comprising a first sub-nozzle and a second sub-nozzle, the first sub-nozzle being arranged on the sley, the second sub-nozzle being rotatably arranged on the first sub-nozzle, and the first sub-nozzle and the second sub-nozzle cooperating with each other to form a main nozzle, and the first sub-nozzle being provided with a locking assembly connected to the second sub-nozzle.

[0004] Although the above patent improves the efficiency of threading the weft thread by rotating the second sub-nozzle and the first sub-nozzle, it is necessary to rotate multiple locking screws and tighten multiple locking nuts when fixing the second sub-nozzle and the first sub-nozzle, which makes the operation more complicated and affects the production efficiency of the equipment. Utility Model Content

[0005] The purpose of the utility model is to provide a weft insertion structure for an air jet loom to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the utility model provides the following technical solution: a weft insertion structure for an air-jet loom, comprising a worktable, a sley is rotatably mounted on one side of the worktable, a first nozzle is fixedly connected to one side of the upper end of the sley, an outer surface of the first nozzle is fixedly connected to a fixed box, a fixed bar is slidably connected to the interior of the fixed box, a plurality of mounting ears are slidably connected to the outer surface of the fixed bar, one side of the plurality of mounting ears are fixedly connected to the inner wall of the fixed box, one end of the fixed bar is fixedly connected to a tension spring, one end of the tension spring is movably fixedly connected to the inner wall of the fixed box, a plurality of sliding grooves are provided on one side of the outer surface of the fixed bar, a plurality of mounting grooves are provided on the other side of the outer surface of the fixed bar, one side of the plurality of mounting grooves is connected through one side of the plurality of sliding grooves, a second nozzle is rotatably connected to one side of the first nozzle, a connecting plate is fixedly connected to one side of the outer surface of the second nozzle, a plurality of L-shaped fixing blocks are fixedly connected to the lower end of the connecting plate, and the plurality of L-shaped fixing blocks are respectively located inside the plurality of mounting grooves.

[0007] As a further preferred embodiment of the present technical solution, a plurality of sealing grooves are provided at the upper end of the first nozzle, a plurality of sealing gaskets are fixedly connected to the lower end of the second nozzle, and outer surfaces of the plurality of sealing gaskets are respectively engaged with inner walls of the plurality of sealing grooves.

[0008] As a further preferred embodiment of the present technical solution, the other side of the upper end of the sley is fixedly connected to a support frame, a fixed pressure wheel is fixedly installed on one side of the support frame, a dynamic pressure wheel is provided above the fixed pressure wheel, one side of the dynamic pressure wheel is fixedly connected to a sliding rod, the outer surface of the sliding rod is slidingly connected to one side of the inner wall of the support frame, the other side of the dynamic pressure wheel is fixedly connected to a return spring, the other end of the return spring is fixedly connected to one side of the support frame, and the sliding rod is located inside the return spring.

[0009] As a further preferred embodiment of the present technical solution, a guide groove is provided on one side of the inner wall of the support frame, a guide block is slidably connected to the inner wall of the guide groove, and one side of the guide block is fixedly connected to one side of the dynamic pressure wheel.

[0010] As a further preferred embodiment of the present technical solution, one side of the first nozzle is fixedly connected to an air intake pipe.

[0011] As a further preferred embodiment of the present technical solution, the lower end of the workbench is fixedly connected to a base, and a weft feeder is fixedly installed on one side of the base.

[0012] The utility model provides a weft insertion structure for an air jet loom, which has the following beneficial effects:

[0013] (1) The utility model combines the second nozzle and the first nozzle by rotating the second nozzle, and the multiple L-shaped fixing blocks on the connecting plate are respectively moved into the multiple installation grooves. When the tension of the loosening fixing strip and the tension of the tension spring itself are used, the fixing strip slides on the installation ear, and the L-shaped fixing blocks slide in the sliding groove, thereby fixing the second nozzle and the first nozzle together. This structure is simple and easy to operate, which greatly improves the speed of installation and removal of the second nozzle and the first nozzle.

[0014] (2) The utility model combines the second nozzle with the first nozzle, and the multiple sealing gaskets on the second nozzle are respectively clamped in the multiple sealing grooves. The structural design of the multiple sealing gaskets and the multiple sealing grooves can form a labyrinth seal between the second nozzle and the first nozzle, thereby preventing gas from escaping from the gap between the second nozzle and the first nozzle and affecting the production efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the first nozzle and the second nozzle when they are opened in the present invention;

[0017] Figure 3 for Figure 2 A partial enlarged schematic diagram of area A in the middle;

[0018] Figure 4 This is a schematic diagram of the connection relationship between the fixing strip and the L-shaped fixing block in the present invention;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the support frame in the present utility model;

[0020] In the figure: 1. workbench; 2. sley; 3. first nozzle; 4. second nozzle; 5. connecting plate; 6. fixing box; 7. sealing groove; 8. sealing gasket; 9. L-shaped fixing block; 10. fixing strip; 11. mounting ear; 12. sliding groove; 13. mounting groove; 14. tension spring; 15. support frame; 16. weft feeder; 17. base; 18. air inlet pipe; 19. fixed pressure wheel; 20. movable pressure wheel; 21. sliding rod; 22. return spring; 23. guide groove; 24. guide block. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0022] The utility model provides a technical solution: Figure 1 - Figure 5As shown, in this embodiment, a weft insertion structure for an air-jet loom comprises a workbench 1, a sley 2 is rotatably mounted on one side of the workbench 1, a first nozzle 3 is fixedly connected to one side of the upper end of the sley 2, a fixed box 6 is fixedly connected to one side of the outer surface of the first nozzle 3, a fixed bar 10 is slidably connected to the interior of the fixed box 6, a plurality of mounting ears 11 are slidably connected to the outer surface of the fixed bar 10, one side of the plurality of mounting ears 11 are fixedly connected to the inner wall of the fixed box 6, one end of the fixed bar 10 is fixedly connected to a tension spring 14, one end of the tension spring 14 is movably fixedly connected to the inner wall of the fixed box 6, a plurality of sliding grooves 12 are provided on one side of the outer surface of the fixed bar 10, a plurality of mounting grooves 13 are provided on the other side of the outer surface of the fixed bar 10, one side of the plurality of mounting grooves 13 is connected to one side of the plurality of sliding grooves 12 The side is connected through, and the second nozzle 4 is rotatably connected to one side of the first nozzle 3, and a connecting plate 5 is fixedly connected to one side of the outer surface of the second nozzle 4. The lower end of the connecting plate 5 is fixedly connected to a plurality of L-shaped fixing blocks 9, and the plurality of L-shaped fixing blocks 9 are respectively located inside the plurality of mounting grooves 13. By rotating the second nozzle 4, the second nozzle 4 and the first nozzle 3 are combined together, and the plurality of L-shaped fixing blocks 9 on the connecting plate 5 are respectively moved into the plurality of mounting grooves 13. When the tension of the loose fixing strip 10 and the tension of the tension spring 14 itself are released, the fixing strip 10 slides on the mounting ear 11, and the L-shaped fixing block 9 slides in the sliding groove 12, thereby fixing the second nozzle 4 and the first nozzle 3 together. This structure is simple and easy to operate, which greatly improves the speed of installation and disassembly of the second nozzle 4 and the first nozzle 3.

[0023] like Figure 2 and Figure 3 As shown, a plurality of sealing grooves 7 are provided at the upper end of the first nozzle 3, and a plurality of sealing gaskets 8 are fixedly connected to the lower end of the second nozzle 4. The outer surfaces of the plurality of sealing gaskets 8 are respectively engaged with the inner walls of the plurality of sealing grooves 7. When the second nozzle 4 and the first nozzle 3 are combined, the plurality of sealing gaskets 8 on the second nozzle 4 are respectively engaged in the plurality of sealing grooves 7. The structural design of the plurality of sealing gaskets 8 and the plurality of sealing grooves 7 can form a labyrinth seal in the gap between the second nozzle 4 and the first nozzle 3, thereby preventing gas from escaping from the gap between the second nozzle 4 and the first nozzle 3, affecting the production efficiency of the equipment.

[0024] like Figure 1 and Figure 5The movable pressure wheel 20 is fixedly connected to the fixed pressure wheel 19 and the movable pressure wheel 20 is fixedly installed on the upper side of the fixed pressure wheel 19. The movable pressure wheel 20 is fixedly connected to a sliding rod 21 on one side of the movable pressure wheel 20. The outer surface of the sliding rod 21 is slidably connected to the inner wall of the support frame 15 on the other side of the movable pressure wheel 20. The other end of the reset spring 22 is fixedly connected to one side of the support frame 15. The sliding rod 21 is located inside the reset spring 22. Pulling the sliding rod 21 drives the movable pressure wheel 20 away from the fixed pressure wheel 19, and then the weft thread passes between the fixed pressure wheel 19 and the movable pressure wheel 20, and the sliding rod 21 is released. The movable pressure wheel 20 cooperates with the fixed pressure wheel 19 under the action of the reset spring 22 to clamp the weft thread. Therefore, after the air-jet loom stops, the fixed pressure wheel 19 and the movable pressure wheel 20 clamp the weft thread, which reduces the probability of threading the weft thread again, saves time, and improves production efficiency.

[0025] like Figure 5 As shown, a guide groove 23 is provided on one side of the inner wall of the support frame 15, and a guide block 24 is slidably connected to the inner wall of the guide groove 23. One side of the guide block 24 is fixedly connected to one side of the dynamic pressure wheel 20. The structural design of the guide groove 23 and the guide block 24 limits the sliding direction of the dynamic pressure wheel 20 to prevent the dynamic pressure wheel 20 from rotating.

[0026] like Figure 1 and Figure 2 As shown, one side of the first nozzle 3 is fixedly connected to an air inlet pipe 18, through which a stable airflow helps the weft yarn fly at a constant speed, reducing weft insertion errors caused by air flow fluctuations, thereby improving fabric quality and production efficiency.

[0027] like Figure 1 As shown, a base 17 is fixedly connected to the lower end of the workbench 1, and a weft feeder 16 is fixedly installed on one side of the base 17. The weft feeder 16 can accurately supply weft yarn according to the set length.

[0028] The utility model provides a weft insertion structure for an air jet loom, and the specific working principle is as follows:

[0029] When using the equipment and passing the weft thread between the first nozzle 3 and the second nozzle 4, the staff first pulls one end of the fixing bar 10 to slide the mounting groove 13 to a position aligned with the L-shaped fixing block 9, rotates the second nozzle 4, places the weft thread into the first nozzle 3 and passes it out of the first nozzle 3, and then rotates the second nozzle 4 to combine the second nozzle 4 with the first nozzle 3. The multiple L-shaped fixing blocks 9 on the connecting plate 5 are respectively moved to the multiple mounting grooves 13. When the tension of the loosening fixing bar 10 and the tension of the tension spring 14 itself are used, the fixing bar 10 slides on the mounting ear 11, and the L-shaped fixing block 9 slides in the sliding groove 12, thereby fixing the second nozzle 4 and the first nozzle 3 together, and the weft threading is completed, and the equipment is used.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A weft insertion structure for an air jet loom, comprising a workbench (1), characterized in that: A sley (2) is rotatably mounted on one side of the workbench (1), a first nozzle (3) is fixedly connected to one side of the upper end of the sley (2), a fixed box (6) is fixedly connected to one side of the outer surface of the first nozzle (3), a fixed bar (10) is slidably connected to the interior of the fixed box (6), a plurality of mounting ears (11) are slidably connected to the outer surface of the fixed bar (10), one side of the plurality of mounting ears (11) are fixedly connected to the inner wall of the fixed box (6), one end of the fixed bar (10) is fixedly connected to a tension spring (14), one end of the tension spring (14) is fixedly connected to the inner wall of the fixed box (6), and the inner wall of the fixed box (6) is fixedly connected to the inner wall of the fixed box (6). The wall is movably fixedly connected, a plurality of sliding grooves (12) are provided on one side of the outer surface of the fixing strip (10), a plurality of mounting grooves (13) are provided on the other side of the outer surface of the fixing strip (10), one side of the plurality of mounting grooves (13) is connected through and communicates with one side of the plurality of sliding grooves (12), one side of the first nozzle (3) is rotatably connected to the second nozzle (4), one side of the outer surface of the second nozzle (4) is fixedly connected to a connecting plate (5), the lower end of the connecting plate (5) is fixedly connected to a plurality of L-shaped fixing blocks (9), and the plurality of L-shaped fixing blocks (9) are respectively located inside the plurality of mounting grooves (13).

2. The weft insertion structure for an air jet loom according to claim 1, characterized in that: The upper end of the first nozzle (3) is provided with a plurality of sealing grooves (7), and the lower end of the second nozzle (4) is fixedly connected with a plurality of sealing pads (8), and the outer surfaces of the plurality of sealing pads (8) are respectively engaged with the inner walls of the plurality of sealing grooves (7).

3. The weft insertion structure for an air jet loom according to claim 1, characterized in that: The other side of the upper end of the sley (2) is fixedly connected to a support frame (15), a fixed pressure wheel (19) is fixedly installed on one side of the support frame (15), a dynamic pressure wheel (20) is arranged above the fixed pressure wheel (19), one side of the dynamic pressure wheel (20) is fixedly connected to a sliding rod (21), the outer surface of the sliding rod (21) is slidably connected to one side of the inner wall of the support frame (15), the other side of the dynamic pressure wheel (20) is fixedly connected to a return spring (22), the other end of the return spring (22) is fixedly connected to one side of the support frame (15), and the sliding rod (21) is located inside the return spring (22).

4. The weft insertion structure for an air jet loom according to claim 3, characterized in that: A guide groove (23) is provided on one side of the inner wall of the support frame (15), and a guide block (24) is slidably connected to the inner wall of the guide groove (23), and one side of the guide block (24) is fixedly connected to one side of the dynamic pressure wheel (20).

5. The weft insertion structure for an air jet loom according to claim 1, characterized in that: One side of the first nozzle (3) is fixedly connected to an air intake pipe (18).

6. The weft insertion structure for an air jet loom according to claim 1, characterized in that: The lower end of the workbench (1) is fixedly connected to a base (17), and a weft storage device (16) is fixedly installed on one side of the base (17).

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