Air-jet loom yarn feeder capable of automatically controlling tension

Abstract

The utility model discloses an air jet loom yarn feeder capable of automatically controlling tension, which comprises a mounting frame, a yarn guide frame and a first yarn guide wheel, one side of the inner wall of the bottom of the mounting frame is connected with the yarn guide frame through a fixing bolt, and the first yarn guide wheel is connected to the center of the top of the yarn guide frame through a rotating shaft. A tensioning wheel is connected between the two sets of limiting sliding blocks through a rotating shaft, a yarn guide groove is formed in the center of the tensioning wheel, movable blocks are connected into the first limiting groove and the second limiting groove in an embedded mode, a second rotating shaft is connected between the two sets of movable blocks through bearings, and the outer wall of the middle of the second rotating shaft is sleeved with a second yarn guide wheel. The movable block is adopted to drive the second rotating shaft and the second yarn guide wheel to do translational motion, so that the distance between the second yarn guide wheel and the tensioning wheel is adjusted, the tension degree of the yarn and the friction force between the yarn and the second yarn guide wheel and between the yarn and the tensioning wheel are changed, and corresponding pulling force is adjusted conveniently when different kinds of yarn are faced so that the yarn can not be broken easily.

Description

Technical Field

[0001] The utility model relates to the technical field of yarn feeders, in particular to a yarn feeder for an air jet loom capable of automatically controlling tension. Background Art

[0002] The air jet loom is a shuttleless loom that uses a jet airflow to pull the weft yarn through the shed. The air jet loom needs to transport the yarn during use. The application number CN200910186226.4 is retrieved, which is a yarn feeder for the air jet loom. Since the yarn feeder is arranged between the yarn tension adjustment device and the yarn mouth of the air jet loom, some yarns with insufficient tension and easy to break are at least wrapped around the roller of the yarn feeder once before entering the yarn mouth. Compared with the prior art, the yarn breakage phenomenon is less likely to occur, thereby ensuring the working efficiency of the air jet loom.

[0003] Similar to the above-mentioned air jet loom yarn feeder: although some yarns with insufficient tension and easy to break are not prone to yarn breakage after being wound around the roller of the yarn feeder for at least one circle before entering the yarn mouth, it is unable to adjust the tension force of the air jet loom yarn mouth pulling the yarn when facing yarns of different specifications, which easily causes thinner yarns to break during the pulling process.

[0004] Therefore, in view of this, the existing structure and defects are studied and improved, and a jet loom yarn feeder with automatic tension control is proposed to achieve a more practical purpose. Utility Model Content

[0005] The purpose of the utility model is to provide a jet loom yarn feeder that can automatically control the tension, so as to solve the problem that the above-mentioned jet loom yarn feeder proposed in the above-mentioned background technology cannot adjust the tension force of the jet loom yarn mouth pulling the yarn when facing yarns of different specifications, which easily causes the thinner yarn to break during the pulling process.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a jet loom yarn feeder capable of automatically controlling tension, comprising a mounting frame, a yarn guide frame and a No. 1 yarn guide wheel, one side of the bottom inner wall of the mounting frame is connected to the yarn guide frame by a fixing bolt, the No. 1 yarn guide wheel is connected to the top center of the yarn guide frame by a rotating shaft, one side of the mounting frame is connected to a fixing frame by bolts, and the fixing frame is connected to fixing blocks at both end edges away from the mounting frame.

[0007] Furthermore, a sliding groove is provided on the inner wall of the opposite side of the two groups of fixed blocks, a limiting slider is embedded in the sliding groove, both ends of the limiting slider are connected to springs, the end of the spring away from the limiting slider is connected to a pressure sensor, and the end of the pressure sensor away from the spring is connected to the inner wall of the sliding groove.

[0008] Furthermore, a tensioning wheel is connected between the two groups of limit sliding blocks via a rotating shaft, a yarn guide groove is arranged at the center of the tensioning wheel, a first limit groove is arranged on the inner wall of one side of the mounting frame, a second limit groove is arranged on the side opposite to the first limit groove, and movable blocks are embedded in the interiors of the first limit groove and the second limit groove.

[0009] Furthermore, a No. 2 rotating shaft is connected between the two groups of movable blocks through bearings, a No. 2 yarn guide wheel is sleeved on the middle outer wall of the No. 2 rotating shaft, a limiting rod is provided in the inner cavity of the No. 1 limiting groove, and the limiting rod passes through the movable block in the No. 1 limiting groove.

[0010] Furthermore, the inner cavity of the No. 2 limiting groove is connected to a screw rod through a bearing, and the screw rod is threadedly connected to the movable block in the No. 2 limiting groove. A servo motor is embedded in one side of the No. 2 limiting groove, and the output end of the servo motor is connected to the screw rod.

[0011] Furthermore, a controller is provided on one side of the bottom of the fixed frame, and the controller is connected to the servo motor and the pressure sensor through electric wires. The outer walls of both sides of the No. 1 yarn guide wheel and the No. 2 yarn guide wheel are both covered with rubber sleeves, and the No. 1 yarn guide wheel and the No. 2 yarn guide wheel are both made of ceramic material.

[0012] Compared with the prior art, the utility model has the following beneficial effects: a jet loom yarn feeder capable of automatically controlling tension, using a movable block to drive the second rotating shaft and the second yarn guide wheel to perform translational motion, thereby adjusting the distance between the second yarn guide wheel and the tensioning wheel, thereby changing the tension of the yarn and the friction between the yarn and the second yarn guide wheel and the tensioning wheel, so as to facilitate adjusting the corresponding tension when facing different yarns so that the yarn is not easy to break. The specific contents are as follows:

[0013] A No. 2 rotating shaft is connected between the two groups of movable blocks through a bearing, and a No. 2 yarn guide wheel is sleeved on the middle outer wall of the No. 2 rotating shaft, and the No. 2 yarn guide wheel acts as a guide wire. A limiting rod is arranged in the inner cavity of the No. 1 limiting groove, and the limiting rod runs through the movable block in the No. 1 limiting groove, and the limiting rod plays a limiting role. A screw is connected to the inner cavity of the No. 2 limiting groove through a bearing, and the screw is threadedly connected to the movable block in the No. 2 limiting groove. A servo motor is embedded in one side of the No. 2 limiting groove, and the output end of the servo motor is connected to the screw. The servo motor can drive the screw to rotate, and the rotation of the screw drives the movable block in the No. 2 limiting groove to perform translational motion, and the movable block drives the No. 2 rotating shaft and the No. 2 yarn guide wheel to perform translational motion, thereby adjusting the distance between the No. 2 yarn guide wheel and the tensioning wheel, thereby changing the tension of the yarn and the friction between the yarn and the No. 2 yarn guide wheel and the tensioning wheel, so that the traction tension of the jet loom yarn mouth on the yarn end is changed, so that it is convenient to adjust the corresponding tension when facing different yarns. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1This is a schematic diagram of the main structure of a jet loom yarn feeder capable of automatically controlling tension according to the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of a No. 1 yarn guide wheel of a jet loom yarn feeder capable of automatically controlling tension in the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the second yarn guide wheel of the air jet loom yarn feeder capable of automatically controlling the tension of the utility model;

[0017] Figure 4 The utility model is a schematic structural diagram of a tensioning wheel of a yarn feeder of an air jet loom capable of automatically controlling the pulling force.

[0018] In the figure: 1. mounting frame; 2. yarn guide frame; 3. yarn guide wheel No. 1; 4. fixing frame; 5. fixing block; 51. slide groove; 6. limit slider; 7. spring; 8. pressure sensor; 9. rotating shaft; 10. tensioning wheel; 11. yarn guide groove; 12. limit groove No. 1; 13. limit groove No. 2; 14. movable block; 15. rotating shaft No. 2; 16. yarn guide wheel No. 2; 17. limit rod; 18. screw; 19. servo motor; 20. rubber sleeve; 21. controller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1 - Figure 4 The utility model provides a technical solution: a yarn feeder for an air jet loom with automatically controlled tension, comprising a mounting frame 1, a yarn guide frame 2 and a No. 1 yarn guide wheel 3. One side of the bottom inner wall of the mounting frame 1 is connected with the yarn guide frame 2 by a fixing bolt. The yarn guide frame 2 plays a role of fixedly supporting the No. 1 yarn guide wheel 3. The No. 1 yarn guide wheel 3 is connected to the top center of the yarn guide frame 2 by a rotating shaft. The No. 1 yarn guide wheel 3 plays a guiding role to facilitate the delivery of the yarn to the yarn mouth of the air jet loom. One side of the mounting frame 1 is connected with a fixing frame 4 by bolts. The fixing frame 4 plays a supporting role. The fixing frames 4 are connected with fixing blocks 5 at both end edges away from the mounting frame 1. The fixing blocks 5 play a fixing role.

[0021] The inner walls of the two sets of fixed blocks 5 on the opposite sides are each provided with a slide groove 51, which plays a limiting role. A limiting slider 6 is embedded in the slide groove 51, and the limiting slider 6 can slide in the slide groove 51. Both ends of the limiting slider 6 are connected with springs 7, and the spring 7 plays a connecting role and shrinks under pressure. At the same time, it has a certain buffering effect to reduce the situation in which the yarn is pulled by the jet loom yarn mouth and the tensioning wheel 10 is pulled too much, resulting in the yarn breaking. The end of the spring 7 away from the limiting slider 6 is connected to a pressure sensor 8, and the model of the pressure sensor 8 is LH-S05B. The end of the pressure sensor 8 away from the spring 7 is connected to the inner wall of the slide groove 51, and the pressure sensor 8 can detect the specific value of the tension generated by the tensioning wheel 10 being pulled by the jet loom during the tensioning process.

[0022] A tensioning wheel 10 is connected between the two groups of limit sliding blocks 6 through a rotating shaft 9. The tensioning wheel 10 plays a certain guiding role. The yarn is wound around the tensioning wheel 10 and the outer wall of the No. 2 yarn guide wheel 6 to increase the friction force on the yarn tensioning, so that the traction tension of the jet loom yarn mouth on the yarn end is reduced to avoid the yarn breakage caused by excessive traction tension. A yarn guide groove 11 is arranged at the center of the tensioning wheel 10, and the yarn guide groove 11 plays a guiding role. A No. 1 limit groove 12 is arranged on the inner wall of one side of the mounting frame 1, and a No. 2 limit groove 13 is arranged on the side opposite to the No. 1 limit groove 12. Both the No. 1 limit groove 12 and the No. 2 limit groove 13 play a limiting role. The interiors of the No. 1 limit groove 12 and the No. 2 limit groove 13 are both embedded with movable blocks 14, and the movable blocks 14 can slide in the No. 1 limit groove 12 and the No. 2 limit groove 13.

[0023] A No. 2 rotating shaft 15 is connected between the two groups of movable blocks 14 through a bearing. A No. 2 yarn guide wheel 16 is sleeved on the middle outer wall of the No. 2 rotating shaft 15. The No. 2 yarn guide wheel 16 acts as a guide wire. A limiting rod 17 is provided in the inner cavity of the No. 1 limiting groove 12. The limiting rod 17 runs through the movable block 14 in the No. 1 limiting groove 12, and the limiting rod 17 plays a limiting role.

[0024] The inner cavity of the No. 2 limit groove 13 is connected with a screw rod 18 through a bearing, and the screw rod 18 is threadedly connected to the movable block 14 in the No. 2 limit groove 13. A servo motor 19 is embedded on one side of the No. 2 limit groove 13, and the output end of the servo motor 19 is connected to the screw rod 18. The servo motor 19 can drive the screw rod 18 to rotate, and the rotation of the screw 18 drives the movable block 14 in the No. 2 limit groove 13 to perform translational movement, and the movable block 14 drives the No. 2 rotating shaft 15 and the No. 2 yarn guide wheel 16 to perform translational movement, thereby adjusting the distance between the No. 2 yarn guide wheel 16 and the tensioning wheel 10, thereby changing the tension of the yarn and the friction between the yarn and the No. 2 yarn guide wheel 16 and the tensioning wheel 10, so that the traction tension of the jet loom yarn mouth on the yarn end is changed, which is convenient for adjusting the corresponding tension when facing different yarns.

[0025] A controller 20 is provided on one side of the bottom of the fixed frame 4. The controller 20 plays a control role. The controller 20 is connected to the servo motor 19 and the pressure sensor 8 through wires. The pressure sensor 8 can transmit the tension generated by the tensioning wheel 10 being pulled by the jet loom during the tensioning process to the controller 20. The controller 20 controls the servo motor 19 to adjust the tension and tension, thereby avoiding the yarn from breaking during the traction process. The outer walls of both sides of the No. 1 yarn guide wheel 3 and the No. 2 yarn guide wheel 16 are both covered with rubber sleeves 21. The rubber sleeves 21 play a role in protecting the No. 1 yarn guide wheel 3 and the No. 2 yarn guide wheel 16. Both the No. 1 yarn guide wheel 3 and the No. 2 yarn guide wheel 16 are made of ceramic material. The ceramic material makes the yarn guide wheels delicate, hard and wear-resistant.

[0026] Working principle: When using a jet loom yarn feeder that can automatically control the tension, the mounting frame 1 is installed on one side of the jet loom yarn mouth by bolts, and the yarn is passed around the second yarn guide wheel 16, the tension wheel 10 and the outer wall of the first yarn guide wheel 3 respectively, and then pulled by the jet loom yarn mouth. A certain pulling force is generated during the traction process, and the limit slider 6 can slide in the slide groove 51. The spring 7 plays a connecting role and shrinks under pressure. At the same time, it has a certain buffering effect to reduce the situation where the jet loom yarn mouth pulls the yarn and causes excessive tension on the tension wheel 10, resulting in yarn breaking. The specific value of the tension generated by the tension wheel 10 being pulled by the jet loom during the tensioning process can be detected by the pressure sensor 8. The yarn is wound around the tension wheel 10 and the outer wall of the second yarn guide wheel 6 to increase the friction force on the yarn tensioning, so that the jet loom yarn mouth The pulling force on the yarn end is reduced. The servo motor 19 can drive the screw 18 to rotate, and the rotation of the screw 18 drives the movable block 14 in the No. 2 limit groove 13 to perform translational movement. The movable block 14 drives the No. 2 rotating shaft 15 and the No. 2 yarn guide wheel 16 to perform translational movement, thereby adjusting the distance between the No. 2 yarn guide wheel 16 and the tensioning wheel 10, thereby changing the tension of the yarn and the friction between the yarn and the No. 2 yarn guide wheel 16 and the tensioning wheel 10, so that the traction tension of the jet loom yarn mouth on the yarn end is changed, which is convenient for adjusting the corresponding tension when facing different yarns. The pressure sensor 8 can transmit the tension generated by the tensioning wheel 10 being pulled by the jet loom during the tensioning process to the controller 20, and the controller 20 controls the servo motor 19 to work so as to adjust the tension and tension, thereby avoiding the yarn from breaking during the traction process.

Claims

1. A yarn feeder for an air jet loom capable of automatically controlling tension, comprising a mounting frame (1), a yarn guide frame (2) and a first yarn guide wheel (3), characterized in that: One side of the bottom inner wall of the mounting frame (1) is connected to a yarn guide frame (2) via fixing bolts, the first yarn guide wheel (3) is connected to the top center of the yarn guide frame (2) via a rotating shaft, one side of the mounting frame (1) is connected to a fixing frame (4) via bolts, and both ends of the fixing frame (4) away from the mounting frame (1) are connected to fixing blocks (5).

2. The yarn feeder for an air jet loom capable of automatically controlling tension according to claim 1, characterized in that: The inner walls of the two groups of fixed blocks (5) on the opposite sides are each provided with a slide groove (51), a limit slider (6) is embedded in the slide groove (51), both ends of the limit slider (6) are connected to a spring (7), one end of the spring (7) away from the limit slider (6) is connected to a pressure sensor (8), and one end of the pressure sensor (8) away from the spring (7) is connected to the inner wall of the slide groove (51).

3. The yarn feeder for an air jet loom capable of automatically controlling tension according to claim 2, characterized in that: A tensioning wheel (10) is connected between the two groups of the limiting sliding blocks (6) via a rotating shaft (9); a yarn guide groove (11) is arranged at the center of the tensioning wheel (10); a first limiting groove (12) is arranged on the inner wall of one side of the mounting frame (1); a second limiting groove (13) is arranged on the side opposite to the first limiting groove (12); and movable blocks (14) are embedded in the interiors of the first limiting groove (12) and the second limiting groove (13).

4. The yarn feeder for an air jet loom capable of automatically controlling tension according to claim 3, characterized in that: A second rotating shaft (15) is connected between the two groups of movable blocks (14) via a bearing, a second yarn guide wheel (16) is sleeved on the middle outer wall of the second rotating shaft (15), a limiting rod (17) is arranged in the inner cavity of the first limiting groove (12), and the limiting rod (17) passes through the movable block (14) in the first limiting groove (12).

5. The yarn feeder for an air jet loom capable of automatically controlling tension according to claim 3, characterized in that: The inner cavity of the second limiting groove (13) is connected to a screw rod (18) via a bearing, and the screw rod (18) is threadedly connected to a movable block (14) in the second limiting groove (13). A servo motor (19) is embedded on one side of the second limiting groove (13), and an output end of the servo motor (19) is connected to the screw rod (18).

6. The yarn feeder for an air jet loom capable of automatically controlling tension according to claim 5, characterized in that: A controller (20) is provided at one side of the bottom of the fixed frame (4), and the controller (20) is connected to the servo motor (19) and the pressure sensor (8) through electric wires. The outer walls of both sides of the No. 1 yarn guide wheel (3) and the No. 2 yarn guide wheel (16) are both covered with rubber sleeves (21), and the No. 1 yarn guide wheel (3) and the No. 2 yarn guide wheel (16) are both made of ceramic material.

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