Warp let-off device of weaving machine

Abstract

The invention provides a loom let-off device, and belongs to the technical field of spinning. The device comprises an unwinding roller, a lifting assembly, a tension adjusting roller, a mechanical linkage assembly and a reset driving assembly. A wire coil is mounted on the unwinding roller; the lifting assembly comprises a lifting driving gear; the tension adjusting roller is configured to be driven by the lifting assembly to ascend and descend, and warp feeding tension fluctuation caused by diameter changes of a wire coil on the unwinding roller is compensated through ascending and descending. The lifting driving gear is in linkage with the unwinding roller through a mechanical linkage assembly and drives the tension adjusting roller to ascend and descend. The reset driving assembly is connected with the mechanical linkage assembly and used for driving the lifting assembly to drive the tension adjusting roller to reset. The invention particularly provides a loom let-off device which can synchronously drive a tension adjusting roller to ascend and descend in the unwinding and let-off process so as to carry out tension compensation on tension fluctuation caused by diameter change of a yarn coil.

Description

Technical Field

[0001] This invention belongs to the field of textile technology, specifically referring to a warp feeding device for a loom. Background Technology

[0002] The warp feed device is one of the core components of the loom. Its main function is to stably and evenly feed the warp yarns on the spool to the weaving mechanism according to the weaving requirements. The consistency of the warp feed tension directly affects the weaving quality of the fabric. If the warp feed tension fluctuates too much, it can easily lead to problems such as warp yarn breakage and uneven fabric density, affecting production efficiency and product qualification rate.

[0003] When the warp feed device is working, it is necessary to ensure a stable and consistent warp feed tension. With a constant warp feed speed, as the diameter of the yarn package gradually decreases, the warp feed tension on the warp yarns gradually increases, thus affecting weaving stability. Currently, some warp feed devices are equipped with tension adjusting rollers. During changes in the yarn package diameter, the raising and lowering of the tension adjusting rollers is used to adjust the warp feed tension in an attempt to ensure uniformity.

[0004] However, the existing warp feeding device has obvious defects: during the process of changing the diameter of the yarn roll, the lifting and lowering action of the tension adjusting roller needs to be controlled separately, resulting in poor synchronization between the lifting and lowering of the tension adjusting roller and the change of the yarn roll diameter. It is impossible to adjust the warp feeding tension in a timely and accurate manner, and tension fluctuations will still occur. At the same time, when a yarn roll is unwound and a new yarn roll is replaced, the reset operation of the tension adjusting roller is cumbersome, and the reset height cannot be adjusted according to the initial yarn roll diameter of the new yarn roll, resulting in poor adaptability and affecting the stability of subsequent warp feeding operations. Summary of the Invention

[0005] In view of the above situation and to overcome the defects of the prior art, the purpose of the present invention is to provide a warp feeding device for a loom, so as to at least partially solve the problems mentioned in the background art.

[0006] The technical solution adopted by this invention is as follows: This invention proposes a warp feeding device for a loom, comprising: Unwinding rollers are used to mount wire coils; Lifting assembly, including lifting drive gear; The tension regulating roller is configured to be lifted and lowered by the lifting assembly, and to compensate for the fluctuation of the warp tension caused by the change in the diameter of the wire roll on the unwinding roller. The mechanical linkage component is used to realize the mechanical linkage between the lifting drive gear and the unwinding roller, so as to drive the lifting drive gear to rotate and drive the tension regulating roller to rise and fall; The reset drive assembly, connected to the mechanical linkage assembly, is used to drive the lifting assembly to reset the tension adjusting roller to the set position.

[0007] Furthermore, the mechanical linkage component includes a linkage drive gear, and the reset drive component includes a reset drive gear. The linkage drive gear and the reset drive gear are located on both sides of the lifting drive gear, and the linkage drive gear and the reset drive gear alternately mesh with the lifting drive gear.

[0008] Furthermore, the mechanical linkage assembly includes a drive shaft, a tension shaft, and a linkage shaft. The drive shaft is rotatably mounted on one side of the unwinding roller. A driving bevel gear is fixedly mounted on the unwinding roller, and a driven bevel gear is fixedly mounted on the drive shaft. The driving bevel gear and the driven bevel gear mesh. Pulleys are correspondingly mounted on the drive shaft, tension shaft, and linkage shaft, and a drive belt is fitted onto each of the three pulleys. The linkage drive gear is fixedly mounted on the linkage shaft, and the linkage shaft is configured to be adjustable in position relative to the lifting drive gear, used to switch the meshing state of the linkage drive gear and the lifting drive gear. The tension shaft is configured to move with the linkage shaft.

[0009] Furthermore, the device also includes a base, within which an active adjustment assembly is provided. The active adjustment assembly includes a drive motor, a drive screw, a drive guide rod, a first slider, and a second slider. The drive motor is mounted on the side wall of the base. The drive screw is rotatably mounted on the side wall of the base, with one end connected to the output shaft of the drive motor. The drive guide rod is mounted on the base. Both the first and second sliders are threaded to the drive screw and slidably mounted on the drive guide rod. A connecting plate is provided between the first and second sliders. A linkage shaft is rotatably mounted on the first slider. A reset shaft is rotatably mounted on the second slider. A reset drive gear is mounted on the reset shaft. A reset motor is mounted on the second slider. The reset shaft is connected to the output shaft of the reset motor.

[0010] Furthermore, the base is also provided with a driven adjustment assembly, which includes a guide slide rod and a third slider. The guide slide rod is located on the side wall of the base, the third slider is slidably located on the guide slide rod, the tensioning shaft is rotatably located on the third slider, and a connecting rod is hinged between the first slider and the third slider.

[0011] Furthermore, the lifting assembly includes a lifting screw, a lifting guide rod, and a lifting plate. The lifting screw is rotatably mounted on the base, the lifting drive gear is located at the lower end of the lifting screw, the lifting guide rod is located on the base, the lifting plate is connected to the lifting screw by a thread and is slidably mounted on the lifting guide rod, and the tension adjusting roller is rotatably mounted on the lifting plate.

[0012] Furthermore, the base is provided with a support frame, and the support frame is provided with a protective cavity. Two sets of support frames are symmetrically arranged. The protective cavities of the two sets of support frames are provided with lifting grooves on opposite sides. The lifting plate passes through the lifting groove and is connected to the lifting screw and the lifting guide rod, and is slidably disposed in the lifting groove.

[0013] Furthermore, the support frame is provided with a limiting and positioning component and a limiting plate. The limiting plate includes a fixed limiting plate and a movable limiting plate. The fixed limiting plate is fixedly mounted on the support frame and is used to limit the downward movement of the lifting plate. The movable limiting plate is connected to the limiting and positioning component and is driven by the limiting and positioning component to slide and rise in front of the lifting groove of the support frame, thereby limiting the upward movement of the lifting plate. The lifting plate slides and rises between the fixed limiting plate and the movable limiting plate. Both the fixed limiting plate and the movable limiting plate are provided with a distance sensor on the side facing the lifting plate. The distance sensor is electrically connected to the drive source of the unwinding roller and the reset motor.

[0014] Furthermore, the limiting and positioning assembly includes a take-up and release shaft, a take-up and release motor, and a take-up and release rope. The take-up and release motor is fixedly mounted on the support frame, the take-up and release shaft is rotatably mounted on the support frame, and one end of the take-up and release shaft is connected to the output shaft of the take-up and release motor. One end of the take-up and release rope is wound around the take-up and release shaft, and the other end is connected to the movable limiting plate.

[0015] Furthermore, the support frame has a guide groove on its side wall with a lifting groove, and the movable limiting plate is engaged and slidably disposed in the guide groove.

[0016] The technical solution provided by this invention has the following beneficial effects: (1) The mechanical linkage component links the unwinding roller with the lifting drive gear, so that the lifting and lowering of the tension adjustment roller is synchronized with the change of the yarn diameter. No separate control is required, which solves the problem of poor synchronization in the existing technology. When unwinding, the yarn diameter decreases, which leads to an increase in tension. The mechanical linkage component can transmit signals in real time to drive the tension adjustment roller to lift and lower synchronously, accurately compensate for tension fluctuations, maintain uniform warp tension, avoid problems such as warp breakage and uneven fabric density, improve weaving quality and product qualification rate, and reduce warp loss.

[0017] (2) By setting a reset drive component, the linkage drive gear and the reset drive gear alternately mesh with the lifting drive gear to achieve rapid switching between adjustment and reset; after the wire roll is unwound, the meshing state can be switched by the active adjustment component, and the tension adjustment roller is driven by the reset motor to quickly reset, simplifying the operation process; at the same time, the limit positioning component can adjust the reset height according to the initial diameter of the new wire roll, adapt to different specifications of wire rolls, improve versatility, reduce the downtime for changing rolls, and improve production efficiency. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of a warp feeding device for a loom according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional cross-sectional structure of a warp feeding device for a loom according to an embodiment of the present invention; Figure 3 for Figure 2 A magnified view of part A; Figure 4 This is a three-dimensional cross-sectional view of a warp feeding device for a loom, as proposed in an embodiment of the present invention. Figure 5 This is a three-dimensional cross-sectional view of the interior of the base of a warp feeding device for a loom, as proposed in an embodiment of the present invention.

[0019] The components include: 1. Unwinding roller; 2. Lifting assembly; 3. Lifting drive gear; 4. Tension adjusting roller; 5. Mechanical linkage assembly; 6. Reset drive assembly; 7. Linkage drive gear; 8. Reset drive gear; 9. Transmission shaft; 10. Tensioning shaft; 11. Linkage shaft; 12. Driving bevel gear; 13. Driven bevel gear; 14. Transmission belt; 15. Base; 16. Drive motor; 17. Drive screw; 18. Drive guide rod; 19. First slider; 20. Second slider; 21. Connecting plate; 22. Reset shaft; 23. Guide slide rod; 24. Third slider; 25. Connecting rod; 26. Lifting screw; 27. Lifting guide rod; 28. Lifting plate; 29. ​​Support frame; 30. Protective cavity; 31. Lifting groove; 32. Fixed limit plate; 33. Movable limit plate; 34. Distance sensor; 35. Take-up and unwinding shaft; 36. Take-up and unwinding motor; 37. Take-up and unwinding rope; 38. Guide groove.

[0020] The accompanying drawings are provided to further understand the embodiments and form part of the specification. They are used together with the embodiments for explanation and do not constitute a limitation on the embodiments. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection.

[0022] In the description of the embodiments, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments.

[0023] See Figures 1-5 In this embodiment, the present invention provides a warp feeding device for a loom, including an unwinding roller 1, a lifting assembly 2, a tension adjusting roller 4, a mechanical linkage assembly 5, and a reset drive assembly 6. A yarn spool is mounted on the unwinding roller 1. The lifting assembly 2 includes a lifting drive gear 3. The tension adjusting roller 4 is configured to be driven to rise and fall by the lifting assembly 2, and to compensate for warp tension fluctuations caused by changes in the diameter of the yarn spool on the unwinding roller 1. The mechanical linkage assembly 5 is used to achieve mechanical linkage between the lifting drive gear 3 and the unwinding roller 1, driving the lifting drive gear 3 to rotate, thereby driving the tension adjusting roller 4 to rise and fall. During the unwinding and warp feeding process of the unwinding roller 1, the tension adjusting roller 4 is driven to rise and fall in coordination through the transmission linkage between the mechanical linkage assembly 5 and the lifting drive gear 3, to compensate for warp tension fluctuations caused by changes in the diameter of the yarn spool. The reset drive assembly 6 is connected to the mechanical linkage assembly 5 and is used to drive the lifting assembly 2 to reset the tension adjusting roller 4 to a set position.

[0024] See Figure 3 and Figure 5 In this embodiment, the mechanical linkage component 5 includes a linkage drive gear 7, and the reset drive component 6 includes a reset drive gear 8. The linkage drive gear 7 and the reset drive gear 8 are located on both sides of the lifting drive gear 3, and the linkage drive gear 7 and the reset drive gear 8 alternately mesh with the lifting drive gear 3 to realize the switching between linkage adjustment and reset adjustment.

[0025] See Figure 3 and Figure 5In this embodiment, the mechanical linkage assembly 5 includes a drive shaft 9, a tension shaft 10, and a linkage shaft 11. The drive shaft 9 is rotatably mounted on one side of the unwinding roller 1. A driving bevel gear 12 is fixedly mounted on the unwinding roller 1, and a driven bevel gear 13 is fixedly mounted on the drive shaft 9. The driving bevel gear 12 and the driven bevel gear 13 mesh to realize the power transmission between the unwinding roller 1 and the drive shaft 9. Pulleys are correspondingly mounted on the drive shaft 9, the tension shaft 10, and the linkage shaft 11. A transmission belt 14 is fitted onto the pulleys of the three shafts to realize synchronous transmission between the drive shaft 9, the tension shaft 10, and the linkage shaft 11. A linkage drive gear 7 is fixedly mounted on the linkage shaft 11. The linkage shaft 11 is configured to be adjustable in position relative to the lifting drive gear 3 to switch the meshing state between the linkage drive gear 7 and the lifting drive gear 3. The tension shaft 10 is configured to move with the linkage shaft 11 to ensure that the transmission belt 14 is always in a tensioned state and to avoid transmission slippage.

[0026] See Figure 5 In this embodiment, to achieve synchronous adjustment of the linkage shaft 11 and the reset drive assembly 6, the device further includes a base 15. An active adjustment assembly is provided within the base 15. The active adjustment assembly includes a drive motor 16, a drive screw 17, a drive guide rod 18, a first slider 19, and a second slider 20. The drive motor 16 is mounted on the side wall of the base 15. The drive screw 17 is rotatably mounted on the side wall of the base 15, and one end is connected to the output shaft of the drive motor 16, driving the drive screw 17 to rotate. The drive guide rod 18 is mounted on the base 15 and serves as a guide. The first slider 19 and the second slider 20 are both connected to the base 15 via threads. A drive screw 17 is connected and slidably mounted on a drive guide rod 18. When the drive screw 17 rotates, it drives the first slider 19 and the second slider 20 to slide synchronously along the drive guide rod 18. A connecting plate 21 is provided between the first slider 19 and the second slider 20 to ensure that they move synchronously. A linkage shaft 11 is rotatably mounted on the first slider 19 and its position is adjusted as the first slider 19 moves. A reset shaft 22 is rotatably mounted on the second slider 20. A reset drive gear 8 is mounted on the reset shaft 22. A reset motor is mounted on the second slider 20. The reset shaft 22 is connected to the output shaft of the reset motor. The reset motor drives the reset shaft 22 to drive the reset drive gear 8 to rotate.

[0027] In this embodiment, the driven adjustment component enables synchronous movement of the tensioning shaft 10 and the linkage shaft 11: when the active adjustment component drives the first slider 19 to move and adjusts the position of the linkage drive gear 7, the first slider 19 drives the third slider 24 to move synchronously through the connecting rod 25, thereby causing the tensioning shaft 10 to move synchronously with the linkage shaft 11, ensuring that the transmission belt 14 is always in a tensioned state, effectively avoiding the problem of the transmission belt 14 becoming loose or slipping due to the movement of the linkage shaft 11. At the same time, through the meshing transmission of the active bevel gear 12 and the driven bevel gear 13, stable power transmission between the unwinding roller 1 and the transmission shaft 9 is achieved. Combined with the synchronous transmission of the pulley and the transmission belt 14, the stability and transmission efficiency of the mechanical linkage are further improved, transmission failure is avoided, the long-term stable operation of the device is ensured, and the frequency and cost of equipment maintenance are reduced.

[0028] See Figure 5 In this embodiment, the base 15 is also provided with a driven adjustment component, which includes a guide slide 23 and a third slider 24. The guide slide 23 is disposed on the side wall of the base 15, and the third slider 24 is slidably disposed on the guide slide 23. The tension shaft 10 is rotatably disposed on the third slider 24. A connecting rod 25 is hinged between the first slider 19 and the third slider 24. When the first slider 19 moves, the third slider 24 is driven to move synchronously along the guide slide 23 through the connecting rod 25, thereby driving the tension shaft 10 to move, so as to keep the transmission belt 14 taut and avoid transmission failure.

[0029] See Figure 1 , Figure 2 and Figure 4 In this embodiment, the lifting assembly 2 includes a lifting screw 26, a lifting guide rod 27, and a lifting plate 28. The lifting screw 26 is rotatably mounted on the base 15. The lifting drive gear 3 is located at the lower end of the lifting screw 26. When the lifting drive gear 3 rotates, it drives the lifting screw 26 to rotate synchronously. The lifting guide rod 27 is located on the base 15 and serves as a guide and limit. The lifting plate 28 is connected to the lifting screw 26 by a thread and is slidably mounted on the lifting guide rod 27. When the lifting screw 26 rotates, it drives the lifting plate 28 to rise and fall vertically along the lifting guide rod 27. The tension adjusting roller 4 is rotatably mounted on the lifting plate 28 and rises and falls synchronously with the lifting plate 28 to achieve tension adjustment of the warp feed.

[0030] See Figure 1 and Figure 2In this embodiment, to protect the lifting assembly 2 and prevent debris such as yarn and dust from affecting its working stability, a support frame 29 is provided on the base 15. The support frame 29 has a protective cavity 30. Two sets of support frames 29 are symmetrically arranged. The protective cavities 30 of the two sets of support frames 29 have lifting grooves 31 on opposite sides. The lifting plate 28 passes through the lifting groove 31 and is connected to the lifting screw 26 and the lifting guide rod 27, and is slidably disposed in the lifting groove 31. The protective cavity 30 can effectively protect the lifting screw 26 and the lifting guide rod. At the same time, the lifting groove 31 plays a guiding and limiting role in the lifting of the lifting plate 28, ensuring that the lifting plate 28 moves smoothly.

[0031] See Figure 1 and Figure 2 In this embodiment, to achieve precise positioning of the tension adjusting roller 4 and adapt to coils with different initial diameters, the support frame 29 is equipped with a positioning component and a positioning plate. The positioning plate includes a fixed positioning plate 32 and a movable positioning plate 33. The fixed positioning plate 32 is fixedly mounted on the support frame 29 and is used to limit the downward movement of the lifting plate 28. The movable positioning plate 33 is connected to the positioning component and is driven by the positioning component to slide and move up and down in front of the lifting groove 31 of the support frame 29, thereby controlling the movement of the lifting plate 28. The lifting plate 28 is positioned at a high position and is slidably positioned between the fixed limit plate 32 and the movable limit plate 33 to ensure precise movement of the lifting plate 28. Both the fixed limit plate 32 and the movable limit plate 33 are equipped with distance sensors 34 on the side facing the lifting plate 28. The distance sensors 34 are electrically connected to the drive source of the unwinding roller 1 and the reset motor. The real-time position of the lifting plate 28 is detected by the distance sensors 34, and then the controller controls the unwinding operation of the unwinding roller 1 and the working timing of the reset motor to achieve automated control.

[0032] In this embodiment, by setting up the distance sensor 34 and electrically connecting the distance sensor 34 with the unwinding roller 1 drive source and the reset motor, the lifting position of the lifting plate 28 can be detected in real time, and the signal is transmitted to the controller. The controller automatically controls the unwinding timing of the unwinding roller 1 and the start and stop of the reset motor, realizing automated control of warp tension adjustment and tension adjustment roller 4 reset. No manual real-time monitoring and operation are required, greatly reducing the intensity of manual labor. At the same time, the cooperative design of the limit plate and the lifting plate 28 precisely limits the lifting stroke of the tension adjustment roller 4, avoiding equipment failure or tension adjustment loss of control caused by excessive lifting. Combined with the precise adjustment of the movable limit plate 33 by the limit positioning component, the adjustment accuracy and operational stability of the device are further improved, reducing the impact of human operation error.

[0033] See Figure 1In this embodiment, the limiting and positioning component includes a take-up and release shaft 35, a take-up and release motor 36, and a take-up and release rope 37. The take-up and release motor 36 is fixedly mounted on the support frame 29, and the take-up and release shaft 35 is rotatably mounted on the support frame 29, with one end connected to the output shaft of the take-up and release motor 36. The take-up and release motor 36 drives the take-up and release shaft 35 to rotate. One end of the take-up and release rope 37 is wound around the take-up and release shaft 35, and the other end is connected to the movable limiting plate 33. When the take-up and release shaft 35 rotates, the movable limiting plate 33 is pulled up and down by the take-up and release rope 37, so as to achieve precise adjustment of the height of the movable limiting plate 33, thereby adjusting the initial height of the lifting plate 28 to adapt to the initial diameter of the coil.

[0034] See Figure 4 In this embodiment, in order to ensure that the movable limiting plate 33 rises and falls smoothly, the support frame 29 has a guide groove 38 on the side wall of the lifting groove 31. The movable limiting plate 33 is engaged and slidably disposed in the guide groove 38. The guide groove 38 plays a guiding and limiting role in the rise and fall of the movable limiting plate 33, preventing the movable limiting plate 33 from deviating and ensuring the limiting accuracy.

[0035] In use, the warp threads on the spool pass over the tension adjusting roller 4. As the unwinding roller unwinds the warp, the spool diameter gradually decreases and the warp tension gradually increases. At this time, the lifting plate 28 drives the tension adjusting roller 4 to descend, alleviating the increasing trend of the warp tension and ensuring stable warp tension. After replacing with a new spool, the lifting plate 28 is raised and reset by the reset motor, so that the tension adjusting roller 4 returns to a height that matches the initial diameter of the new spool, facilitating the smooth operation of subsequent warp feeding.

[0036] It should be noted that in this embodiment, the output shaft of the unwinding motor is externally connected to the unwinding roller 1, the unwinding motor drives the unwinding roller 1 to rotate as the driving source of the unwinding roller 1, and the installation and removal of the wire roll on the unwinding roller 1 are all existing technologies, so they will not be described in detail in this embodiment.

[0037] The specific working process of the warp feeding device of this loom is as follows: (1) Based on the initial diameter of the new coil, start the take-up and release motor 36. The take-up and release motor 36 drives the take-up and release shaft 35 to rotate. The take-up and release rope 37 pulls the movable limit plate 33 up and down along the guide groove 38. Adjust the height of the movable limit plate 33, thereby limiting the initial rising height of the lifting plate 28, so that the initial height of the tension adjusting roller 4 matches the initial diameter of the coil. At this time, start the drive motor 16. The drive motor 16 drives the drive screw 17 to rotate, driving the first slider 19 and the second slider 20 to move synchronously along the drive guide rod 18, driving the linkage drive gear 7 to approach the lifting drive gear 3 and mesh with it. At the same time, the first slider 19 drives the third slider 24 to move along the guide slide rod 23 through the connecting rod 25, driving the tensioning shaft 10 to move, ensuring that the transmission belt 14 is in a tensioned state. The reset drive gear 8 moves with the second slider 20, away from the lifting drive gear 3, and disengages from the meshing state.

[0038] (2) Start the unwinding motor, which drives the unwinding roller 1 to rotate for unwinding and warp feeding; when the unwinding roller 1 rotates, it drives the driving bevel gear 12 on it to rotate, and the driving bevel gear 12 meshes with the driven bevel gear 13 on the transmission shaft 9, driving the transmission shaft 9 to rotate; the transmission shaft 9 drives the tensioning shaft 10 and the linkage shaft 11 to rotate synchronously through the transmission belt 14, and the linkage shaft 11 drives the linkage drive gear 7 on it to rotate; the linkage drive gear 7 meshes with the lifting drive gear 3, driving the lifting drive gear 3 to rotate, and then driving the lifting screw 26 to rotate; when the lifting screw 26 rotates, it drives the lifting plate 28 The lifting plate 28 moves vertically up and down along the lifting guide rod 27, and the tension adjusting roller 4 moves synchronously up and down with the lifting plate 28. As the unwinding roller 1 unwinds, the diameter of the wire roll gradually decreases and the warp tension gradually increases. At this time, the lifting plate 28 drives the tension adjusting roller 4 to descend, which alleviates the trend of increasing tension and realizes synchronous and precise adjustment of the warp tension, ensuring that the warp tension is stable and consistent. During this process, the distance sensor 34 on the fixed limit plate 32 and the movable limit plate 33 detects the position of the lifting plate 28 in real time. When the lifting plate 28 descends to be close to the fixed limit plate 32, the distance sensor 34 sends a signal to the controller, indicating that the wire roll is about to be unwound.

[0039] (3) After the warp yarn on the spool is completely unwound, the controller stops the unwinding motor; at the same time, the drive motor 16 is started, and the drive motor 16 drives the drive screw 17 to rotate in the opposite direction, driving the first slider 19 and the second slider 20 to move in the opposite direction along the drive guide rod 18, driving the linkage drive gear 7 away from the lifting drive gear 3 and disengaging it; at the same time, the reset drive gear 8 moves with the second slider 20, approaches the lifting drive gear 3 and meshes with it; when the first slider 19 moves in the opposite direction, it drives the third slider 24 to move in the opposite direction through the connecting rod 25, driving the tension shaft 10 to move, always ensuring transmission. The belt 14 is tensioned; then, the reset motor is started, which drives the reset shaft 22 to rotate, and the reset shaft 22 drives the reset drive gear 8 to rotate. The reset drive gear 8 meshes with the lifting drive gear 3, causing the lifting drive gear 3 to rotate in the opposite direction, which in turn drives the lifting screw 26 to rotate in the opposite direction, driving the lifting plate 28 to rise and reset along the lifting guide rod 27; when the lifting plate 28 rises to near the movable limit plate 33, the distance sensor 34 sends a signal to the controller, and the controller controls the reset motor to stop working, the lifting plate 28 stops rising, and the tension adjusting roller 4 completes the reset, preparing for the next winding of yarn to be fed.

[0040] (4) Repeat the work after changing the wire roll: remove the empty wire roll on the unwinding roller 1 and install the new wire roll; if the initial diameter of the new wire roll is different from the previous roll, the initial adjustment steps can be repeated to adjust the height of the movable limit plate 33 so that the initial height of the tension adjustment roller 4 matches the initial diameter of the new wire roll; then, repeat the wire feeding tension linkage adjustment steps to start the wire feeding work of the new wire roll.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0042] The embodiments have been described above, and such description is not restrictive. The figures shown are only one embodiment, and the actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit, such design should fall within the scope of protection.

Claims

1. A warp feeding device for a loom, characterized in that, include: Unwinding roller (1), used for mounting wire coil; The lifting assembly (2) includes a lifting drive gear (3); The tension regulating roller (4) is configured to be driven to rise and fall by the lifting assembly (2), and to compensate for the fluctuation of the warp tension caused by the change in the diameter of the unwinding roller (1) by the lifting and falling. Mechanical linkage component (5) is used to realize the mechanical linkage between lifting drive gear (3) and unwinding roller (1) to drive lifting drive gear (3) to rotate; The reset drive assembly (6) is connected to the mechanical linkage assembly (5) and is used to drive the lifting assembly (2) to reset the tension adjusting roller (4) to the set position.

2. The warp feeding device for a loom according to claim 1, characterized in that, The mechanical linkage component (5) includes a linkage drive gear (7), and the reset drive component (6) includes a reset drive gear (8). The linkage drive gear (7) and the reset drive gear (8) are located on both sides of the lifting drive gear (3), and the linkage drive gear (7) and the reset drive gear (8) alternately mesh with the lifting drive gear (3).

3. The warp feeding device for a loom according to claim 2, characterized in that, The mechanical linkage assembly (5) includes a drive shaft (9), a tension shaft (10), and a linkage shaft (11). The drive shaft (9) is rotatably mounted on one side of the unwinding roller (1). A driving bevel gear (12) is fixedly mounted on the unwinding roller (1), and a driven bevel gear (13) is fixedly mounted on the drive shaft (9). The driving bevel gear (12) and the driven bevel gear (13) mesh. Pulleys are correspondingly mounted on the drive shaft (9), the tension shaft (10), and the linkage shaft (11), and a drive belt (14) is mounted on the pulleys of the three. The linkage drive gear (7) is fixedly mounted on the linkage shaft (11). The linkage shaft (11) is configured to be adjustable relative to the lifting drive gear (3) to switch the meshing state of the linkage drive gear (7) and the lifting drive gear (3). The tension shaft (10) is configured to move with the linkage shaft (11).

4. The warp feeding device for a loom according to claim 3, characterized in that, It also includes a base (15), which is equipped with an active adjustment assembly. The active adjustment assembly includes a drive motor (16), a drive screw (17), a drive guide rod (18), a first slider (19), and a second slider (20). The drive motor (16) is located on the side wall of the base (15). The drive screw (17) is rotatably located on the side wall of the base (15), and one end is connected to the output shaft of the drive motor (16). The drive guide rod (18) is located on the base (15). The first slider (19) is located on the side wall of the base (15). The first slider (19) and the second slider (20) are both connected to the drive screw (17) by threads and are slidably mounted on the drive guide rod (18). A connecting plate (21) is provided between the first slider (19) and the second slider (20). The linkage shaft (11) is rotatably mounted on the first slider (19). A reset shaft (22) is rotatably mounted on the second slider (20). The reset drive gear (8) is mounted on the reset shaft (22). A reset motor is provided on the second slider (20). The reset shaft (22) is connected to the output shaft of the reset motor.

5. The warp feeding device for a loom according to claim 4, characterized in that, The base (15) is also provided with a driven adjustment component, which includes a guide slide (23) and a third slider (24). The guide slide (23) is located on the side wall of the base (15), and the third slider (24) is slidably located on the guide slide (23). The tensioning shaft (10) is rotatably located on the third slider (24). A connecting rod (25) is hinged between the first slider (19) and the third slider (24).

6. The warp feeding device for a loom according to claim 1, characterized in that, The lifting assembly (2) includes a lifting screw (26), a lifting guide rod (27), and a lifting plate (28). The lifting screw (26) is rotatably mounted on the base (15). The lifting drive gear (3) is located at the lower end of the lifting screw (26). The lifting guide rod (27) is located on the base (15). The lifting plate (28) is connected to the lifting screw (26) by a thread and is slidably mounted on the lifting guide rod (27). The tension adjusting roller (4) is rotatably mounted on the lifting plate (28).

7. The warp feeding device for a loom according to claim 6, characterized in that, The base (15) is provided with a support frame (29), and the support frame (29) is provided with a protective cavity (30). The support frame (29) is provided with two sets symmetrically. The protective cavities (30) of the two sets of support frames (29) are provided with lifting grooves (31) on opposite sides. The lifting plate (28) passes through the lifting groove (31) and is connected to the lifting screw (26) and the lifting guide rod (27), and is slidably disposed in the lifting groove (31).

8. The warp feeding device for a loom according to claim 7, characterized in that, The support frame (29) is provided with a limiting positioning component and a limiting plate. The limiting plate includes a fixed limiting plate (32) and a movable limiting plate (33). The fixed limiting plate (32) is fixed on the support frame (29) and is used to limit the lowering position of the lifting plate (28). The movable limiting plate (33) is connected to the limiting positioning component and is driven by the limiting positioning component to slide and lift in front of the lifting groove (31) of the support frame (29) to limit the rising position of the lifting plate (28). The lifting plate (28) slides between the fixed limiting plate (32) and the movable limiting plate (33). Both the fixed limiting plate (32) and the movable limiting plate (33) are provided with a distance sensor (34) on the side facing the lifting plate (28). The distance sensor (34) is electrically connected to the drive source and reset motor of the unwinding roller (1).

9. The warp feeding device for a loom according to claim 8, characterized in that, The limiting and positioning assembly includes a take-up and release shaft (35), a take-up and release motor (36), and a take-up and release rope (37). The take-up and release motor (36) is fixedly mounted on the support frame (29). The take-up and release shaft (35) is rotatably mounted on the support frame (29), and one end is connected to the output shaft of the take-up and release motor (36). One end of the take-up and release rope (37) is wound around the take-up and release shaft (35), and the other end is connected to the movable limiting plate (33).

10. The warp feeding device for a loom according to claim 7, characterized in that, The support frame (29) has a guide groove (38) on its side wall with a lifting groove (31), and the movable limiting plate (33) is engaged and slidably disposed in the guide groove (38).

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