Weft insertion device of air jet loom

Abstract

The utility model discloses a weft insertion device of an air-jet loom, relates to the technical field of air-jet looms, and aims to solve the problems that equipment needs to be stopped before a yarn coil is used up and the yarn needs to be connected manually. The side, away from the creel, of the yarn disc is detachably connected with a plurality of yarn rolls arranged in a circumferential array mode, a yarn leading device is arranged between the yarn disc and the weft accumulator, the thread ends of the yarn rolls are clamped to the yarn leading device, the creel is provided with a supporting plate located above the yarn disc, and the end, away from the creel, of the supporting plate is provided with a wiring device. According to the utility model, before the wire coil is used up, the wire leading device and the wiring device are matched with each other to carry out wiring operation with a next new wire coil, so that the automatic wiring effect can be realized under the condition of not stopping the work of equipment, the production efficiency is improved, and the labor investment is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to air jet loom technical field more specifically, it relates to air jet loom's weft insertion device. BACKGROUND

[0002] Weft insertion device is one of the important components of air jet loom, mainly including creel, weft accumulator, air pressure adjusting device and nozzle structure, its main function is to use the high-speed airflow produced when compressed air releases through small hole to pull the weft yarn stored in weft accumulator to pass through the shed, thereby realizing the effect of continuous weaving.

[0003] However, the winding amount of the thread roll is limited, so that the equipment needs to be stopped before the thread roll is used up, and the weaving production of the fabric can continue only after connecting the new thread roll manually, which reduces the production efficiency and increases the labor cost during the period.

[0004] Therefore, a new scheme needs to be proposed to solve this problem. UTILITY MODEL CONTENT

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a weft insertion device of an air jet loom.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: the weft insertion device of the air jet loom comprises a creel, a weft accumulator, an air pressure adjusting device and a nozzle, one side of the creel is rotatably connected with a thread reel, the side of the thread reel away from the creel is detachably connected with a plurality of thread rolls arranged in a circumferential array, a thread leading device is arranged between the thread reel and the weft accumulator, the thread ends of the plurality of thread rolls are clamped on the thread leading device, the creel above the thread reel is provided with a support plate, and the end of the support plate away from the creel is provided with a wire connecting device.

[0007] The utility model is further provided as follows: the thread leading device comprises a telescopic rod, a thread leading cylinder and a bearing, the top end of the telescopic rod is provided with a thread leading hole, the thread leading cylinder is fixedly connected to the side of the telescopic rod close to the thread reel and communicates with the thread leading hole, and the inner wall of the bearing is fixedly connected to the outer peripheral wall of the thread leading cylinder.

[0008] The utility model is further provided as follows: the outer peripheral wall of the bearing is fixedly connected with a plurality of clamping blocks arranged in a circumferential array, and the number of the clamping blocks is correspondingly arranged with the number of the thread rolls.

[0009] The utility model is further provided as follows: the end of the clamping block away from the bearing is provided with a groove, the thread ends of the plurality of thread rolls are clamped in the plurality of grooves respectively, and the bearing rotates when rotating with the thread reel under the traction of the yarn on the thread roll.

[0010] The utility model further sets up: the wiring device includes the lead -in board, electric push rod and cutting knife, the lead -in board is away from cutting knife one side and is equipped with lead -in groove no.

[0011] The utility model further sets up: electric push rod fixed connection is in the top of lead -in board, the bottom of electric push rod is fixedly connected with hot press board, the bottom of hot press board is equipped with lead -in groove no.

[0012] The utility model further sets up: the bottom of lead -in board is fixedly connected with bottom plate, the top surface of bottom plate is integrally formed with lug, lead -in groove no.

[0013] The utility model further sets up: lead -in groove no. Between hot press board and bottom plate, the bottom of lead -in groove no. The bottom of lead -in groove no. 2, the top end of lug is located on the same vertical plane, and the cutting knife is located between the adjacent line roll of circumference.

[0014] Summarized above, the utility model has following beneficial effect: when line roll is about to be used up and is driven by motor line disc along clockwise direction rotation certain distance, make next line roll's yarn with yarn when conveying no. 1 bottom, at this time, drive hot press board to move down and cooperate with bottom plate and carry out hot pressure fixed operation to two yarns through electric push rod, continue to rotate yarn disc and cut off yarn that is about to be used up through cutting knife, to realize the effect of automatic wiring under the condition of not stopping equipment work, improve the production efficiency of air -jet loom, reduce manual input. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is Figure 1 The enlarged view of A in the middle;

[0017] Figure 3 It is Figure 1 The enlarged view of B in the middle.

[0018] In the drawing: 1, the frame of yarn; 2, the storage of weft; 3, the line disc; 4, the line roll; 5, the lead -in device; 6, the support plate; 7, the wiring device; 8, the telescopic link; 9, the lead -in cylinder; 10, the bearing; 11, the lead -in hole; 12, the clamping block; 13, the recess; 14, the lead -in board; 15, the electric push rod; 16, the cutting knife; 17, lead -in groove no. 18, hot press board; 19, lead -in groove no. 20, bottom plate; 21, lug; 22, support column. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in connection with the drawings and examples.

[0020] Example: The weft insertion device of an air-jet loom, such as Figure 1 As shown, the device includes a yarn frame 1, a weft feeder 2, an air pressure regulating device, and a nozzle. High-speed airflow generated when compressed air is released through the nozzle draws the weft yarn stored on the weft feeder 2 through the shed, thus completing the weft insertion operation. A circular yarn spool 3 is rotatably connected to the side of the yarn frame 1 closest to the weft feeder 2. The center of this spool 3 is driven clockwise by a servo motor, which enables precise position, speed, and torque control for more accurate control. Several arrayed support pillars 22 are fixedly connected to the side of the spool 3 furthest from the yarn frame 1. Yarn spools 4 are detachably connected to the support pillars 22, allowing them to move circumferentially as the spool 3 rotates. The yarn frame 1 is used to store and supply weft yarn, ensuring the smooth operation of the weaving process.

[0021] like Figure 1 and Figure 2 As shown, a yarn guide device 5 is provided between the yarn spool 3 and the weft feeder 2. The yarn guide device 5 includes a telescopic rod 8, a yarn guide tube 9, and a bearing 10. A yarn guide hole 11 is opened at the top of the telescopic rod 8. The yarn guide tube 9 is fixedly connected to the side of the telescopic rod 8 near the yarn spool 3 and communicates with the yarn guide hole 11. The yarn output from the yarn spool 4 is fed into the interconnected yarn guide tube 9 and yarn guide hole 11. The inner wall of the bearing 10 is fixedly connected to the outer peripheral wall of the yarn guide tube 9. Several circumferentially arranged locking blocks 12 are fixedly connected to the outer peripheral wall of the bearing 10. The locking blocks 12 are made of rubber. It has good deformation ability and anti-slip effect. The number of locking blocks 12 is set in accordance with the number of yarn spools 4. The end of the locking block 12 away from the bearing 10 is provided with a groove 13 with a V-shaped cross section. Except for the yarn spools 4 during conveying, the ends of the other yarn spools 4 are respectively locked in the corresponding grooves 13. When the spool 3 drives several yarn spools 4 to rotate, the bearing 10 is pulled by the yarn on several yarn spools 4 and rotates with the spool 3. The friction generated when the yarn is locked in the groove 13 is greater than the pulling force required when the traction bearing 10 rotates, thereby preventing the yarn from coming off the groove 13 when the traction bearing 10 rotates.

[0022] like Figures 1-3As shown, the creel 1 is fixedly connected with a support plate 6 above the line disc 3, and the end of the support plate 6 away from the creel 1 is fixedly connected with a wiring device 7, the wiring device 7 comprises a lead plate 14, an electric push rod 15 and a cutting knife 16, the top of the lead plate 14 is fixedly connected to the side of the support plate 6 away from the creel 1, the distance between the end of the support column 22 away from the line disc 3 and the creel 1 is less than the width of the support plate 6, so as to avoid the support column 22 touching the lead plate 14 when rotating, the side of the lead plate 14 away from the cutting knife 16 is provided with an arc-shaped lead slot one 17, the yarn output from the line roll 4 enters the lead cylinder 9 through the lead slot one 17, the length of the lead slot one 17 is rounded on both sides to avoid the yarn being ground off during conveying, the lead slot one 17 is located on the moving path of the yarn between the line roll 4 and the clamping block 12, so that when the line disc 3 rotates in the clockwise direction, the yarn on the next line roll 4 will move to the bottom end of the lead slot one 17 and abut the yarn during conveying, at this time the line disc 3 stops rotating.

[0023] As shown in Figure 1 and Figure 3 The electric push rod 15 is fixedly connected to the top of the lead plate 14 and away from the side of the support plate 6, the electric push rod 15 is arranged downward, the bottom of the electric push rod 15 is fixedly connected with a hot pressing plate 18, the bottom end of the hot pressing plate 18 is provided with an arc-shaped lead slot two 19, the bottom of the lead plate 14 and away from the side of the support plate 6 is fixedly connected with a bottom plate 20, the top surface of the bottom plate 20 is integrally formed with an arc-shaped protrusion 21, the lead slot two 19 is arranged in correspondence with the protrusion 21 up and down, the hot pressing plate 18 and the bottom plate 20 are heated by electricity, the lead slot one 17 is located between the hot pressing plate 18 and the bottom plate 20, the bottom end of the lead slot one 17, the bottom end of the lead slot two 19 and the top end of the protrusion 21 are located on the same vertical plane, so that when the electric push rod 15 drives the hot pressing plate 18 to move downward, the two yarns abutting in the lead slot one 17 will be pulled to the bottom surface of the lead slot two 19 and abut the top end of the protrusion 21, so as to perform hot pressing operation on the two yarns, in the process of hot pressing, the fibers on the surface of the yarns will be affected by high temperature and melt, and the two yarns will be adhered and fixed together under the action of pressure.

[0024] As shown in Figures 1-3As shown, the top of the cutter 16 is fixedly connected to the support plate 6 away from the creel 1, and the cutter 16 is located between the circumferentially adjacent spools 4. After the heat pressing operation on the two yarns is completed, the spool 3 continues to rotate in the clockwise direction until the cutter 16 cuts off the yarn being delivered, and then the spool 3 stops rotating. The traction force of the buffer is greater than the friction force between the yarn and the groove 13. At this time, the traction force of the yarn exerted by the buffer drives the yarn on the next spool 4 to be separated from the groove 13, so that the yarn output from the next spool 4 enters the lead-in groove 17 and is wound on the buffer in the lead-in drum 9. The motor is electrically connected with a control module, and the starting interval and rotation time of the motor can be adjusted through the control module. The heat pressing operation on the yarn is controlled within 2 seconds. Before the splicing operation, the buffer stores 5-8 times the amount of yarn, providing sufficient splicing time, so that the automatic splicing can be performed before the spool 4 is almost exhausted without stopping the operation of the equipment, thereby improving the production efficiency of the air-jet loom and reducing the labor input.

[0025] Working principle: after the spools 4 are placed on the plurality of support posts 22, the yarn heads of the spools 4 are clamped on the corresponding clamping blocks 12. When the spool 4 being delivered is almost exhausted, the yarns on the next spool 4 are driven into the lead-in groove 17 and abut against the yarns being delivered. At this time, the electric push rod 15 drives the heat pressing plate 18 to move downward and draw the two abutting yarns in the lead-in groove 17 to the bottom surface of the lead-in groove 2 and abut against the top end of the protrusion 21, so as to heat press and fix the two yarns together. At this time, the motor drives the spool 3 to rotate in the clockwise direction again, and then stops the rotation of the spool 3 after the cutter 16 cuts off the yarn being delivered. The traction force of the yarn exerted by the buffer drives the yarn on the next spool 4 to be separated from the groove 13, and then the yarn is delivered.

[0026] The preferred embodiments of the present application have been described above, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principle of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. Weft insertion device for air-jet looms, comprising a creel (1), a weft accumulator (2), a pneumatic regulating device and a nozzle, characterized in that: One side of the creel (1) is rotatably connected with a thread disc (3), a plurality of circumferential array arranged thread rolls (4) are detachably connected to the side of the thread disc (3) away from the creel (1), a thread leading device (5) is arranged between the thread disc (3) and the weft accumulator (2), the thread ends of the plurality of thread rolls (4) are clamped on the thread leading device (5), a supporting plate (6) is arranged above the thread disc (3) and the creel (1), and a wiring device (7) is arranged at the end of the supporting plate (6) away from the creel (1).

2. Weft insertion device of a pneumatic loom according to claim 1, characterized in that The thread leading device (5) comprises a telescopic rod (8), a thread leading cylinder (9) and a bearing (10), the top end of the telescopic rod (8) is provided with a thread leading hole (11), the thread leading cylinder (9) is fixedly connected to the side of the telescopic rod (8) close to the thread disc (3) and communicates with the thread leading hole (11), and the inner wall of the bearing (10) is fixedly connected to the outer peripheral wall of the thread leading cylinder (9).

3. Weft insertion device of a pneumatic loom according to claim 2, characterized in that: The outer peripheral wall of the bearing (10) is fixedly connected with a plurality of circumferential array arranged clamping blocks (12), and the number of the clamping blocks (12) corresponds to the number of the thread rolls (4).

4. Weft insertion device of a pneumatic loom according to claim 3, characterized in that: The end of the clamping block (12) away from the bearing (10) is provided with a groove (13), the thread ends of the plurality of thread rolls (4) are clamped in the plurality of grooves (13) respectively, and the bearing (10) rotates when rotating with the thread disc (3) under the traction of the yarn on the thread roll (4).

5. Weft insertion device of a pneumatic loom according to claim 4, characterized in that: The wiring device (7) comprises a thread leading plate (14), an electric push rod (15) and a cutting knife (16), the thread leading plate (14) is provided with a thread leading groove one (17) at the side away from the cutting knife (16), and the thread leading groove one (17) is located on the moving path of the yarn between the thread roll (4) and the clamping block (12).

6. Weft insertion device of a pneumatic loom according to claim 5, characterized in that: The electric push rod (15) is fixedly connected to the top of the thread leading plate (14), the bottom of the electric push rod (15) is fixedly connected with a hot pressing plate (18), and the bottom end of the hot pressing plate (18) is provided with a thread leading groove two (19).

7. Weft insertion device of a pneumatic loom according to claim 6, characterized in that The bottom of the thread leading plate (14) is fixedly connected with a bottom plate (20), the top surface of the bottom plate (20) is integrally formed with a protruding block (21), and the thread leading groove two (19) and the protruding block (21) are arranged in correspondence with each other in up and down directions.

8. Weft insertion device of a pneumatic loom according to claim 7, characterized in that The thread leading groove one (17) is located between the hot pressing plate (18) and the bottom plate (20), the bottom end of the thread leading groove one (17), the bottom end of the thread leading groove two (19) and the top end of the protruding block (21) are located on the same vertical plane, and the cutting knife (16) is located between the circumferentially adjacent thread rolls (4).

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