Weaving machine with let-off tension control

Abstract

This invention provides a loom with a warp tension control device. It solves the technical problem of yarn breakage due to excessive or insufficient yarn tension during warp feeding in existing looms. This loom with a warp tension control device includes a frame, a guide roller 1 mounted at the feed end of the frame, a tension roller 1 mounted above the guide roller 1, a tension control mechanism 1 disposed between the tension roller 1 and the guide roller 1, a guide roller 2 disposed behind the tension roller 1, a tension control mechanism 2 disposed between the tension roller 1 and the guide roller 2, a drive mechanism connected to the tension control mechanism 2, a rotary motor 1 connected to the end of the guide roller 2, and a conveyor roller 1 and a conveyor roller 2 sequentially disposed above the guide roller 2. A yarn separating mechanism, a weft insertion mechanism, and a warp and weft pushing mechanism are sequentially installed between the conveyor roller 1 and the conveyor roller 2. This invention can adjust the warp feeding speed according to the tension, thereby reducing the occurrence of yarn breakage due to excessive or insufficient tension.

Description

Technical Field

[0001] This invention belongs to the field of textile technology and relates to a loom, particularly a loom with a warp tension control device. Background Technology

[0002] A loom is a machine used to form a fabric by interlacing two or more sets of yarns at right angles. Industrial looms exchange yarn ends thousands of times per minute during production, and each yarn end exchange generates a strong tension. If the tension of the yarn during warp feeding is too high or too low, this tension may cause the yarn end to break, requiring the machine to stop and resulting in losses. Therefore, it is necessary to design a loom with a warp feeding tension control device to ensure that the yarn end is not easily torn by the tension. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a loom with a warp feed tension control device.

[0004] The objective of this invention can be achieved through the following technical solution: A loom with a warp tension control device, comprising a frame, characterized in that a guide roller is rotatably mounted at the feeding end of the frame, a tension roller is rotatably mounted above the guide roller, a tension control mechanism is provided between the tension roller and the guide roller, a guide roller is provided after the tension roller, a tension control mechanism is provided between the tension roller and the guide roller, the tension control mechanism is connected to a drive mechanism, a rotary motor is connected to the end of the guide roller, a conveyor roller and a conveyor roller are sequentially arranged above the guide roller, the guide roller, the conveyor roller, and the conveyor roller are all rotatably mounted on the frame, a yarn separating mechanism for separating the warp yarns, a weft insertion mechanism for passing the weft yarns between the warp yarns, and a weft pushing mechanism for tightening the warp and weft yarns are sequentially installed between the conveyor roller and the conveyor roller, and a collecting roller for winding up the fabric is provided after the conveyor roller.

[0005] The tension control mechanism includes a mounting frame, on which a mounting component is mounted. A connecting component is rotatably connected to the mounting component. A tension roller is rotatably mounted on one end of the connecting component, and a buffer spring is connected to the other end of the connecting component. One end of the buffer spring is connected to the connecting component, and the other end of the buffer spring is connected to the mounting component. The mounting component is mounted on the mounting frame and located below the mounting component. A tension detector is mounted on the end of the connecting component that is connected to the buffer spring.

[0006] The tension control mechanism 2 includes two tension rollers 3, and several rotating wheels are rotatably mounted on the tension rollers 3. Each rotating wheel has a protrusion 1 on its side. A constant speed shaft is rotatably mounted inside the tension roller. The constant speed shaft has a protrusion 2, and the protrusion 1 and the protrusion 2 can rely on each other.

[0007] With the above structure, the rotational speed of each rotating wheel is limited by a constant speed shaft, thereby limiting the yarn tension on each rotating wheel.

[0008] The drive mechanism includes a drive motor, a main sprocket, a driven sprocket, and a chain belt. The drive motor is mounted on the frame, and the main sprocket is mounted on the output shaft of the drive motor. The driven sprocket is mounted on a constant speed shaft, and the chain belt is sleeved on the main sprocket and the driven sprocket.

[0009] Using the above structure, the rotation of the constant speed shaft is driven by a drive motor, thereby achieving speed control of the constant speed shaft.

[0010] The working principle of this invention is as follows: The yarn is introduced into the loom through guide roller one, and then conveyed to guide roller two after passing through tension roller two and tension roller one in sequence. When the yarn passes through tension roller two, the spring at the end of connector one will play a buffering role according to the tension when the yarn is introduced. At the same time, the tension detector detects the tension and controls the speed of rotary motor one according to the tension, thereby controlling the speed of warp feeding of guide roller two. When the yarn passes through tension roller three, due to the limitation of the constant speed shaft, the tension of each yarn can be further integrated. After being guided by guide roller two, the yarn passes through conveyor roller one and conveyor roller two in sequence for conveying. During this period, the yarn is divided into upper and lower warp by the yarn separating mechanism, and then the weft yarn is inserted between the warp yarns by the weft insertion mechanism. Finally, the warp and weft yarns are tightened by the weft pushing mechanism, and then the fabric is wound up by the collecting roller.

[0011] The yarn separating mechanism includes a driver 1, a driver 2, a connector 2, a connector 3, and heddles. The connector 2 is slidably connected to the frame via the driver 1, and the connector 3 is slidably connected to the frame via the driver 2. The driver 1 and the driver 2 are mounted on the frame, and several heddles are mounted at the bottom of the connector 2 and the connector 3.

[0012] Using the above structure, the first and second drivers control the second and third connectors to move up and down, respectively, so that the yarn passing through the heddle is misaligned, which facilitates the subsequent weft insertion process.

[0013] The weft insertion mechanism includes a mounting component three, a sword belt one, a sword belt two, a sword head one, a sword head two, a rotating disk one, a rotating disk two, a drive motor two, and a drive motor three. The mounting component three is connected to the frame. The drive motor two and drive motor three are mounted on the mounting component three. The rotating disk one is mounted on the output shaft of the drive motor two. The sword belt one is mounted on the rotating disk one, and a sword head one is mounted at the end of the sword belt one. The rotating disk two is mounted on the output shaft of the drive motor three. The sword belt two is mounted on the rotating disk two, and a sword head two is mounted at the end of the sword belt two.

[0014] Using the above structure, drive motor 2 and drive motor 3 control the rotation of rotating disk 1 and rotating disk 2 respectively, realizing the synchronous extension and retraction of scissor belt 1 and scissor belt 2, thereby completing the entire weft insertion process: drive motor 2 and drive motor 3 rotate synchronously in the forward direction, the hook on scissor head 1 pulls the weft yarn to the maximum distance of scissor belt 1, at which time scissor belt 2 also reaches the maximum distance, scissor head 2 on scissor belt 2 contacts scissor head 1 and hooks the weft yarn on scissor head 1, drive motor 2 and drive motor 3 rotate in the opposite direction, scissor belt 1 and scissor belt 2 retract, scissor head 1 separates from scissor head 2, scissor head 2 returns with the weft yarn, and scissor head 1 releases the weft yarn and returns to pull a new weft yarn.

[0015] The weft pushing mechanism includes a second rotary motor, a cam, a push rod, a fourth mounting component, and a yarn pushing plate. The second rotary motor is mounted on the frame, and a cam is mounted on the output shaft of the second rotary motor. The cam is rotatably connected to one end of the push rod, and the other end of the push rod is rotatably connected to the fourth mounting component. The fourth mounting component is slidably mounted on the frame, and a yarn pushing plate for pushing weft is mounted on the fourth mounting component.

[0016] The above structure uses a rotary motor to control the rotation of the cam, which drives the push rod to reciprocate, thereby enabling the pusher plate to reciprocate and push the weft yarn, thus tightening the warp and weft yarns.

[0017] The weft insertion mechanism is equipped with a guide for the passage of the first and second weft threads, and the guide is mounted on the frame.

[0018] The above structure guides the movement trajectories of sword belt one and sword belt two through the guide component.

[0019] Compared with the prior art, the loom with the warp tension control device has the following advantages: The present invention is equipped with a tension control mechanism, which can buffer the tension when the yarn is introduced and adjust the warp speed according to the tension, thereby reducing the occurrence of yarn breakage due to excessive or insufficient tension, and making the overall operation of the loom more stable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a schematic diagram of the tension roller three in this invention. Figure 1 .

[0022] Figure 3 This is a schematic diagram of the tension roller three in this invention. Figure 2 .

[0023] Figure 4 This is a schematic diagram of the weft insertion mechanism in this invention.

[0024] Figure 5 This is a schematic diagram of the structure of sword tip one and sword tip two in this invention.

[0025] Figure 6 This is a schematic diagram of the yarn pusher plate in this invention.

[0026] Figure 7 This is a magnified view of a portion of point A in this invention.

[0027] In the diagram: 1. Frame; 2. Guide roller 1; 3. Tension roller 1; 4. Guide roller 2; 5. Rotary motor 1; 6. Conveyor roller 1; 7. Conveyor roller 2; 8. Collecting roller; 9. Mounting frame; 10. Mounting component 1; 11. Connecting component 1; 12. Tension roller 2; 13. Buffer spring; 14. Mounting component 2; 15. Tension detector; 16. Tension roller 3; 17. Rotating wheel; 18. Protrusion 1; 19. Constant speed shaft; 20. Protrusion 1; 21. Drive motor 1; 22. Main sprocket. 23. Sprocket; 24. Chain belt; 25. Driver 1; 26. Driver 2; 27. Connector 2; 28. Connector 3; 29. ​​Heald; 30. Mounting component 3; 31. Rapier belt 1; 32. Rapier belt 2; 33. Rapier head 1; 34. Rapier head 2; 35. Rotating disc 1; 36. Rotating disc 2; 37. Drive motor 2; 38. Drive motor 3; 39. Rotating motor 2; 40. Cam; 41. Push rod; 42. Mounting component 4; 43. Yarn pusher plate; 44. Guide component. Detailed Implementation

[0028] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0029] like Figure 1-7 As shown, this loom with a warp tension control device includes a frame 1. A guide roller 2 is rotatably mounted at the feeding end of the frame 1. A tension roller 3 is rotatably mounted above the guide roller 2. A tension control mechanism 1 is arranged between the tension roller 3 and the guide roller 2. A guide roller 4 is arranged behind the tension roller 3. A tension control mechanism 2 is arranged between the tension roller 3 and the guide roller 4. The tension control mechanism 2 is connected to a drive mechanism. A rotary motor 5 is connected to the end of the guide roller 4. A conveyor roller 6 and a conveyor roller 7 are arranged sequentially above the guide roller 4. The guide roller 4, the conveyor roller 6, and the conveyor roller 7 are all rotatably mounted on the frame 1. A yarn separating mechanism for separating the warp yarns, a weft insertion mechanism for passing the weft yarns between the warp yarns, and a weft pushing mechanism for tightening the warp and weft yarns are arranged sequentially between the conveyor roller 6 and the conveyor roller 7. A collecting roller 8 for winding up the fabric is arranged behind the conveyor roller 7.

[0030] The tension control mechanism includes a mounting frame 9, on which a mounting component 10 is mounted. A connecting component 11 is rotatably connected to the mounting component 10. A tension roller 12 is rotatably mounted on one end of the connecting component 11. A buffer spring 13 is connected to the other end of the connecting component 11. One end of the buffer spring 13 is connected to the connecting component 11, and the other end of the buffer spring 13 is connected to the mounting component 14. The mounting component 14 is mounted on the mounting frame 9 and located below the mounting component 10. A tension detector 15 is mounted on the end of the connecting component 11 that is connected to the buffer spring 13.

[0031] In this invention, the tension detector 15 uses a device that is currently available on the market.

[0032] The tension control mechanism 2 includes two tension rollers 3 16, several rotating wheels 17 are rotatably mounted on the tension rollers 3 16, and the rotating wheels 17 have a protrusion 1 18 on their side. A constant speed shaft 19 is rotatably mounted inside the tension rollers, and the constant speed shaft 19 has a protrusion 2 on the constant speed shaft 19, and the protrusion 1 18 and the protrusion 2 can rely on each other.

[0033] The principle of tension integration achieved by the tension roller 3 16 and the constant speed shaft 19 in this invention is as follows: The constant speed shaft 19 is driven by a drive mechanism to maintain a certain rotation speed. Since the tension of each rotating wheel 17 on the tension roller is different, the rotation speed of each rotating wheel 17 is also different. Therefore, the inner protrusion 1 of the rotating wheel 17 with a faster rotation speed will contact the rear end of the protrusion 2, and thus the rotation speed is limited by the constant speed shaft 19. The inner protrusion of the rotating wheel 17 with a slower rotation speed will gradually contact the front end of the protrusion 2, and thus the rotation speed will be increased by the constant speed shaft 19, ultimately achieving the integration of the rotation speeds of each rotating wheel 17. In this invention, two tension rollers 3 16 are set up, which can better integrate the rotation speeds and make the tension control and adjustment process smoother.

[0034] The drive mechanism includes a drive motor 21, a main sprocket 22, a driven sprocket 23, and a chain belt 24. The drive motor 21 is mounted on the frame 1. The main sprocket 22 is mounted on the output shaft of the drive motor 21. The driven sprocket 23 is mounted on the constant speed shaft 19. The chain belt 24 is sleeved on the main sprocket 22 and the driven sprocket 23.

[0035] The yarn separating mechanism includes a driver 1 25, a driver 2 26, a connector 2 27, a connector 3 28, and heddles 29. Connector 2 27 is slidably connected to the frame 1 via driver 1 25, and connector 3 28 is slidably connected to the frame 1 via driver 2 26. Driver 1 25 and driver 2 26 are mounted on the frame 1. Several heddles 29 are mounted at the bottom of connector 2 27 and connector 3.

[0036] In this invention, each pair of adjacent heddles 29 are sequentially and alternately installed on connector 27 and connector 3 28, that is, each pair of adjacent yarns passing through the heddles 29 will be distributed vertically, which is beneficial for weaving.

[0037] The weft insertion mechanism includes mounting component 30, scimitar belt 1 31, scimitar belt 2 32, scimitar head 1 33, scimitar head 2 34, rotating disk 1 35, rotating disk 2 36, drive motor 2 37, and drive motor 38. Mounting component 30 is connected to frame 1. Drive motor 2 37 and drive motor 38 are mounted on mounting component 30. Rotating disk 1 35 is mounted on the output shaft of drive motor 2 37. Scimitar belt 1 31 is mounted on rotating disk 1 35. Scimitar head 1 33 is mounted at the end of scimitar belt 1 31. Rotating disk 2 36 is mounted on the output shaft of drive motor 38. Scimitar belt 2 32 is mounted on rotating disk 2 36. Scimitar head 2 34 is mounted at the end of scimitar belt 2 32.

[0038] In this invention, the first sword head 33 and the second sword head 34 adopt existing structures. The first sword head 33 can hook the weft yarn from the weft yarn supply device and then transfer the weft yarn through the cooperation of the first sword head 33 and the second sword head 34. The weft yarn supply device adopts existing equipment and is independent of the loom as a whole. Its structure will not be described in this invention.

[0039] The weft pushing mechanism includes a second rotary motor 39, a cam 40, a push rod 41, a fourth mounting component 42, and a yarn pushing plate 43. The second rotary motor 39 is mounted on the frame 1. The cam 40 is mounted on the output shaft of the second rotary motor 39. The cam 40 is rotatably connected to one end of the push rod 41. The other end of the push rod 41 is rotatably connected to the fourth mounting component 42. The fourth mounting component 42 is slidably mounted on the frame 1. The yarn pushing plate 43 for pushing weft is mounted on the fourth mounting component 42.

[0040] In this invention, the weft pushing mechanism and the weft insertion mechanism are linked and controlled by existing technology, so that the weft pushing plate in the weft pushing mechanism will not come into contact with the first weft insertion head 33 and the second weft insertion head 34 in the weft insertion mechanism.

[0041] The weft insertion mechanism is equipped with a guide 44 for the passage of scissor belt 31 and scissor belt 32, and the guide 44 is mounted on the frame 1.

[0042] In this invention, the guide 44 can also be used to store the first sword head 33 and the second sword head 34 when the loom stops working.

[0043] The working principle of this invention is as follows: The yarn is introduced into the loom through guide roller 2, and then conveyed to guide roller 4 after passing through tension roller 12 and tension roller 3 in sequence. When the yarn passes through tension roller 12, the spring at the end of connector 11 will play a buffering role according to the tension when the yarn is introduced. At the same time, tension detector 15 detects the tension and controls the speed of rotary motor 5 according to the tension, thereby controlling the speed of warp feeding of guide roller 4. When the yarn passes through tension roller 3 16, the tension of each yarn can be further integrated due to the limitation of constant speed shaft 19. After being guided by guide roller 4, the yarn is conveyed through conveyor roller 6 and conveyor roller 7 in sequence. During this period, the yarn is divided into upper and lower warp by the yarn separating mechanism, and then the weft yarn is inserted between the warp yarns by the weft insertion mechanism. Finally, the warp and weft yarns are tightened by the weft pushing mechanism, and then the fabric is wound up by the collecting roller 8.

[0044] In this invention, the various mechanisms are connected using existing technology and synchronized through a control panel.

[0045] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0046] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A weaving machine with a let-off tension control device, comprising a machine frame (1), characterized in that The upper end of the rack (1) is rotatably installed with a guide roller one (2), a tension roller one (3) is rotatably installed above the guide roller one (2), a tension control mechanism one is arranged between the tension roller one (3) and the guide roller one (2), the tension control mechanism one comprises a mounting frame (9), a mounting piece one (10) is installed on the mounting frame (9), a connecting piece one (11) is rotatably connected to the mounting piece one (10), a tension roller two (12) is rotatably installed at one end of the connecting piece one (11), a buffer spring (13) is connected to the other end of the connecting piece one (11), one end of the buffer spring (13) is connected to the connecting piece one (11), the other end of the buffer spring (13) is connected with a mounting piece two (14), the mounting piece two (14) is installed on the mounting frame (9) and below the mounting piece one (10), a tension detector (15) is installed at the end of the connecting piece one (11) connected with the buffer spring (13), a guide roller two (4) is arranged behind the tension roller one (3), a tension control mechanism two is arranged between the tension roller one (3) and the guide roller two (4), the tension control mechanism two comprises two tension rollers three (16), a plurality of rotating wheels (17) are rotatably installed on the tension rollers three (16), the rotating wheels (17) have a protruding part one (18) on the side, a constant speed shaft (19) is rotatably installed inside the tension roller, the constant speed shaft (19) has a protruding part two on the constant speed shaft (19), and the protruding part one (18) and the protruding part two can rely on each other, the tension control mechanism two is connected with a driving mechanism, the driving mechanism comprises a driving motor one (21), a main sprocket (22), a slave sprocket (23) and a chain belt (24), the driving motor one (21) is installed on the rack (1), the main sprocket (22) is installed on the output shaft of the driving motor one (21), the slave sprocket (23) is installed on the constant speed shaft (19), the chain belt (24) is sleeved on the main sprocket (22) and the slave sprocket (23), a rotary motor one (5) is connected to the end of the guide roller two (4), a conveying roller one (6) and a conveying roller two (7) are sequentially arranged above the guide roller two (4), the guide roller two (4), the conveying roller one (6) and the conveying roller two (7) are all rotatably installed on the rack (1), a yarn separating mechanism for separating warp yarns up and down, a weft inserting mechanism for inserting weft yarns between warp yarns and a weft pushing mechanism for tightening warp yarns and weft yarns are sequentially installed between the conveying roller one (6) and the conveying roller two (7), the yarn separating mechanism comprises a driver one (25), a driver two (26), a connecting piece two (27), a connecting piece three (28) and a heald (29), the connecting piece two (27) is slidably connected with the rack (1) through the driver one (25), the connecting piece three (28) is slidably connected with the rack (1) through the driver two (26), the driver one (25) and the driver two (26) are installed on the rack (1), a plurality of healds (29) are installed at the bottom of the connecting piece two (27) and the connecting piece three (28),The weft insertion mechanism comprises a mounting piece three (30), a sword belt one (31), a sword belt two (32), a sword head one (33), a sword head two (34), a rotating disc one (35), a rotating disc two (36), a driving motor two (37) and a driving motor three (38), the mounting piece three (30) is connected on the rack (1), the driving motor two (37) and the driving motor three (38) are installed on the mounting piece three (30), the output shaft of the driving motor two (37) is provided with the rotating disc one (35), the sword belt one (31) is installed on the rotating disc one (35), the end of the sword belt one (31) is provided with the sword head one (33), the output shaft of the driving motor three (38) is provided with the rotating disc two (36), the sword belt two (32) is installed on the rotating disc two (36), the end of the sword belt two (32) is provided with the sword head two (34), the weft insertion mechanism comprises a rotating motor two (39), a cam (40), a push rod (protruding part one (18)), a mounting piece four (42) and a push plate (43), the rotating motor two (39) is installed on the rack (1), the output shaft of the rotating motor two (39) is provided with the cam (40), the cam (40) is rotatably connected with one end of the push rod (protruding part one (18)), the other end of the push rod (protruding part one (18)) is rotatably connected with the mounting piece four (42), the mounting piece four (42) is slidably installed on the rack (1), the mounting piece four (42) is provided with the push plate (43) for weft insertion, the conveying roller two (7) is provided with the collecting roller (8) for winding the fabric.

2. A weaving machine with a let-off tension control device according to claim 1, characterized in that The weft insertion mechanism is provided with a guide (44) for the passage of the first sword belt (31) and the second sword belt (32), and the guide (44) is mounted on the frame (1).

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