Warp tension adjusting device and loom

Abstract

The utility model relates to the technical field of textile equipment, and discloses a warp tension adjusting device which comprises a left swing mechanism, a right swing mechanism, a warp loosening roller and a sensing device. The left swing mechanism and the right swing mechanism are arranged on warp feeding wallboards on the left side and the right side of the loom respectively and can rotate front and back in the warp conveying direction. The two ends of the warp loosening roller are arranged on the left swing mechanism and the right swing mechanism respectively and used for conveying and lifting warp. According to the warp tension adjusting device, the warp loosening rollers are arranged on the left swing mechanism and the right swing mechanism, so that changes of warp tension can be detected in time, and the warp tension can be effectively adjusted in time.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile equipment technical field, concretely relates to warp tension adjusting device and loom. BACKGROUND

[0002] The warp tension adjusting device in prior art includes guide roller, backrest roll and connecting arm, backrest roll and guide roller are parallel and interval set, both ends of roll axle of backrest roll are fixedly connected with rotating shaft of both sides of guide roller through connecting arm. When working, backrest roll is used for conveying and lifting warp, when warp tension changes, warp will exert an additional force to backrest roll, the force will produce a moment to rotating shaft of guide roller and drive rotating shaft of guide roller to rotate, when rotating shaft of guide roller rotates, signal will be sent to control device of beam transmission device, control device receives signal and controls rotating speed of transmission output shaft, so that rotating speed of beam is changed, and warp tension can be quickly restored to normal. But the existing problem is that guide roller of warp tension adjusting device will hinder the disassembly of warp beam, and guide roller needs to be lifted together with backrest roll to the groove in the upper part for temporary placement, which makes the disassembly of warp beam very time-consuming and laborious, and the structure of the present warp tension adjusting device may cause the phenomenon that warp tension changes, but rotating shaft of guide roller does not rotate, because the direction of force of warp tension to backrest roll is uncertain, once the direction of force of warp tension is close to parallel to connecting arm, the moment produced by the force to rotating shaft of guide roller will be small, so that rotating shaft of guide roller cannot be driven to rotate or only rotates a small angle, leading to that control device cannot accurately adjust the rotating speed of beam, and finally leading to that warp tension cannot be restored to normal in time and affecting product quality. SUMMARY

[0003] The utility model aims at overcoming the above-mentioned problems in prior art, and provides a warp tension adjusting device, which can timely detect the change of warp tension and timely and effectively adjust the warp tension, ensure product quality, and will not hinder the disassembly of warp beam.

[0004] In order to achieve the above object, the utility model provides a warp tension adjusting device, including left swing mechanism, right swing mechanism, warp relaxing roller and sensing device, left swing mechanism and right swing mechanism are arranged respectively in the left and right sides of loom warp wall board and can rotate back and forth along the conveying direction of warp, the both ends of warp relaxing roller are arranged respectively on left swing mechanism and right swing mechanism for conveying and lifting warp, and when the warp tension of warp relaxing roller changes, left swing mechanism and right swing mechanism can be driven to rotate forward or backward, sensing device is connected with the control device of loom, sensing device is arranged to be able to sense the forward or backward swing of left swing mechanism and right swing mechanism and transmit signal to control device, after receiving the signal from sensing device, the control device will control the rotating speed of the beam of loom to make the warp tension return to normal.

[0005] In an optional embodiment of the utility model, the left swing mechanism and the right swing mechanism are basically the same in structure and each include: a fixed shaft, a rocker arm and a limiting mechanism; the fixed shaft is fixed to the same side of the warp wall plate, and the fixed shaft is parallel to the axis of the warp relaxing roller; the rocker arm is rotatably arranged on the fixed shaft; the axis of the warp relaxing roller is arranged on the rocker arm and directly above the axis of the fixed shaft; the limiting mechanism is fixed to the same side of the warp wall plate for limiting the swing amplitude of the rocker arm.

[0006] In an optional embodiment of the utility model, the limiting mechanism includes an upper limiting piece, a lower limiting piece and a limiting shaft; the limiting shaft is fixed between the upper limiting piece and the lower limiting piece; a limiting hole is provided on the first end of the rocker arm for the limiting shaft to pass through.

[0007] In an optional embodiment of the utility model, the limiting mechanism further includes a warp relaxing spring, the warp relaxing spring is vertically arranged on the limiting shaft and between the rocker arm and the lower limiting piece or between the rocker arm and the upper limiting piece, and an end of the warp relaxing spring away from the rocker arm is provided with the sensing device to transmit the stretching force of the warp relaxing spring to the control device.

[0008] In an optional embodiment of the utility model, the limiting mechanism further includes an upper limiting spring and a lower limiting spring, the upper limiting spring is between the rocker arm and the upper limiting piece, and the lower limiting spring is between the rocker arm and the lower limiting piece; the end of the lower limiting spring is provided with the sensing device.

[0009] In an optional embodiment of the utility model, the end of the warp relaxing roller is arranged on the rocker arm through a connecting plate elongated along the conveying direction of the warp, and the connecting plate is symmetrically arranged about the fixed shaft.

[0010] In an optional embodiment of the utility model, the warp relaxing roller comprises a roller cylinder and a roller shaft, the roller cylinder is rotatably arranged on the roller shaft to convey the warp, two ends of the roller shaft are fixed on the swing arms of the left swing mechanism and the right swing mechanism respectively, and an axis of the roller shaft is located directly above an axis of the fixed shaft.

[0011] In an optional embodiment of the utility model, the two ends of the warp relaxing roller are arranged on the swing arms of the left swing mechanism and the right swing mechanism through bearings, and an axis of a bearing seat of the bearing is located directly above an axis of the fixed shaft.

[0012] The utility model also provides a loom which comprises the warp tension adjusting device and the warp feeding wall plates arranged on the left and right sides of the loom.

[0013] The utility model discloses a warp tension adjusting device, which directly arranges a warp relaxing roller on a left swing mechanism and a right swing mechanism, when the tension of the warp passing through the warp relaxing roller changes, the left swing mechanism and the right swing mechanism will swing forward or backward immediately, thereby triggering a sensing device to transmit the swing information to a control device, so that the control device can adjust the rotation speed of the weaving shaft in time to make the warp tension recover rapidly. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to make the technical scheme in the embodiments of the utility model clearer, the drawings needed in the embodiments will be briefly introduced as follows, and obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to the drawings without creative labor for those skilled in the art.

[0015] Figure 1 It is a kind of warp tension adjusting device provided by the utility model embodiment.

[0016] EXPLANATION OF REFERENCE NUMERALS

[0017] 1 right swing mechanism, 10 fixed shaft, 11 rocker arm, 12 limit mechanism, 121 upper limit piece, 122 lower limit piece, 123 upper limit spring, 124 lower limit spring, 2 warp relaxing roller, 3 sensing device, 4 warp feeding wallboard. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "transverse", "longitudinal" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not intended to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0020] In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific circumstances.

[0021] In addition, the terms "mounting", "setting", "provided with", "connection", "connected" should be broadly understood. For example, it can be fixedly connected, detachably connected, or integrally constructed; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] In addition, the terms "first", "second" and the like are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not intended to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise stated, the meaning of "multiple" is two or more.

[0023] As Figure 1The utility model discloses a warp tension adjusting device, including left swing mechanism, right swing mechanism 1, loose warp roller 2 and sensing device 3, left swing mechanism and right swing mechanism 1 are arranged respectively in the left and right sides of loom warp wallboard 4 and can rotate back and forth along the conveying direction of warp, and the both ends of loose warp roller 2 are arranged on left swing mechanism and right swing mechanism 1 respectively to be used for conveying and lifting warp, and when the warp tension that loose warp roller 2 suffers changes, can drive left swing mechanism and right swing mechanism 1 rotate forward or backward, sensing device 3 is connected with the control device of the transmission of loom, and sensing device 3 is set to be able to sense the swing of left swing mechanism and right swing mechanism 1 forward or backward and signal transmission is given control device, and the control device receives the signal from sensing device 3 and will control the rotating speed of the weaving shaft of loom to make the warp tension return to normal.

[0024] In the embodiment, as long as left swing mechanism and right swing mechanism 1 can satisfy the back and forth rotation along the conveying direction of warp and are arranged respectively on the left and right sides of warp wallboard 4, the existing loom all includes the warp wallboard on the left and right sides, and the warp wallboard 4 here is the warp wallboard in the prior art, which is not repeated here.

[0025] In the embodiment, the installation position of loose warp roller 2 is the same as the position of the back beam roller of loom in the prior art, which is used for lifting and conveying warp.

[0026] In the embodiment, sensing device 3 can be various sensors, such as force sensor, photoelectric sensor, etc., as long as the swing amplitude of driving left and right swing mechanism 1, 1' forward or backward can be sensed and the signal is transmitted to the control device connected therewith.

[0027] In the embodiment, the control device is used for controlling the transmission mechanism of loom including weaving shaft, for starting, closing and adjusting rotating speed, etc.

[0028] In the production process, when the warp roller 2 is conveying the warp yarn output by the weaving beam of the delivery loom, if the warp yarn tension changes, the warp roller 2 as a whole will be subjected to a forward or backward pulling force, since the two ends of the warp roller 2 are arranged on the left swing mechanism and the right swing mechanism 1 respectively, when the two ends of the warp roller 2 produce a forward or backward rotating movement trend under the action of the warp yarn tension, the left swing mechanism and the right swing mechanism 1 will be driven to rotate forward or backward, when the left swing mechanism and the right swing mechanism 1 rotate forward or backward, the sensing device 3 will be triggered, the sensing device 3 will transmit the received data to the control device, the control device will analyze the data and make corresponding adjustment to the rotating speed of the weaving beam to make the warp yarn tension quickly return to normal. The warp yarn tension adjusting device of the utility model saves the guide roller in the prior art, does not hinder the disassembly of the warp beam, saves the process of carrying the guide roller and the back beam roller connected with the guide roller back and forth because of replacing the warp beam in the prior art; the warp yarn tension adjusting device of the utility model directly arranges the warp roller on the left and right swing mechanisms, when the tension of the warp yarn passing through the warp roller changes, the left and right swing mechanisms will immediately swing forward or backward, thereby triggering the sensing device to transmit the swing information to the control device, so that the control device can timely adjust the rotating speed of the weaving beam to make the warp yarn tension quickly return to normal; at the same time, since the warp yarn is conveyed from top to bottom through the warp roller, when the warp yarn tension changes, the warp roller will drive the left and right swing mechanisms to swing forward or backward, so the phenomenon that the change of the warp yarn tension cannot be timely transmitted to the control device in the prior art will not occur. The warp yarn tension adjusting device of the utility model directly arranges the warp roller on the left and right swing mechanisms, not only can timely detect the change of the warp yarn tension and make timely and effective adjustment to the warp yarn tension, ensures the product quality, at the same time, the structure is simpler, saves the guide roller in the prior art, improves the work efficiency of replacing the warp beam, and reduces the production cost.

[0029] Optionally, in order to facilitate processing and make the structure more simple and practical, the left swing mechanism and the right swing mechanism 1 structure can be designed to be substantially the same and each include: a fixed shaft 10, a rocker arm 11, and a limiting mechanism 12; the fixed shaft 10 is fixed to the same side of the let-off wall plate 4, and the fixed shaft 10 is parallel to the axis of the let-off roller 2; the rocker arm 11 is rotatably arranged on the fixed shaft 10; the axis of the let-off roller 2 is arranged on the rocker arm 11 and directly above the axis of the fixed shaft 10; the limiting mechanism 12 is fixed to the same side of the let-off wall plate 4 for limiting the swing amplitude of the rocker arm 11. When the tension of the warp yarn on the let-off roller 2 changes, due to the let-off roller 2 being located on the rocker arm 11 and above the fixed shaft 10, the let-off roller 2 will have a tendency to rotate forward or backward along the warp yarn conveying direction under the action of the change in warp yarn tension, thereby driving the rocker arm 11 arranged on the fixed shaft 10 to rotate forward or backward, at which time the limiting mechanism 12 fixed to the let-off wall plate 4 is used to limit the rotation amplitude of the rocker arm 11 to prevent the rotation angle from being too large. The rotation angle of the rocker arm 11 should only be limited to the range that can be sensed by the sensing device 3, and should not be rotated too large to avoid causing the rocker arm to not reset in time.

[0030] Further, in order to limit the rotation amplitude of the rocker arm 11 and make the rotation more stable, the limiting mechanism 12 includes an upper limiting piece 121, a lower limiting piece 122, and a limiting shaft (not shown in the figure); the limiting shaft is fixed between the upper limiting piece 121 and the lower limiting piece 122; and a limiting hole is provided on the first end of the rocker arm 11 for the limiting shaft to pass through. In this way, the upper limiting piece 121 and the lower limiting piece 122 effectively limit the up-down rotation amplitude of the rocker arm 11, and the limiting shaft can also limit the rocker arm 11 in the circumferential direction to prevent the rocker arm 11 from moving in the circumferential direction due to machine vibration or other external forces, effectively ensuring that the rocker arm can stably rotate up and down when the warp yarn tension changes. Specifically, the limiting hole provided on the rocker arm 11 for the limiting shaft to pass through can be designed as a waist-shaped hole that extends in the warp yarn conveying direction, thereby effectively avoiding the phenomenon of the rocker arm 11 being stuck by the limiting shaft.

[0031] In addition, in order to buffer the impact of the rocker arm 11 on the upper limiting piece 121 and the lower limiting piece 121 when it rotates and swings, the limiting mechanism 12 can be designed in multiple structures, of which the following two embodiments are listed as preferred ways, which can be selected in specific implementation.

[0032] The first embodiment is that the limiting mechanism 12 further comprises a slack spring (not shown in the figure), which is vertically arranged on the limiting shaft and between the rocker arm 11 and the lower limiting part 122 or between the rocker arm 11 and the upper limiting part 121, and the end of the slack spring away from the rocker arm 11 is provided with the sensing device 3 to transmit the stretching force of the slack spring to the control device. Specifically, the slack spring is vertically placed and the limiting shaft passes through the slack spring, one end of the slack spring is connected with the lower limiting part 122 or the upper limiting part 121, and the other end of the slack spring is connected with the rocker arm 11, so that when the rocker arm 11 swings due to the change of the warp tension, the slack spring is pulled or compressed, and the sensing device 3 installed at the end of the slack spring away from the rocker arm 11 can timely sense the pulling force or the compression force of the spring and transmit it to the control device to timely adjust the speed of the warp beam to quickly restore the warp tension to normal.

[0033] The second embodiment is that the limiting mechanism 12 further comprises an upper limiting spring 123 and a lower limiting spring 124, the upper limiting spring 123 is between the rocker arm 11 and the upper limiting part 121, and the lower limiting spring 124 is between the rocker arm 11 and the lower limiting part 122; the end of the lower limiting spring 124 is provided with the sensing device 3. In this embodiment, when the rocker arm 11 swings forward and backward, the sensing device at the end of the lower limiting spring 124 can timely sense the pressure change from the rocker arm 11 and transmit the information to the control device to timely adjust the warp tension.

[0034] Further, in order to enable the rocker to swing in time to accurately detect the change of the tension when the warp tension just starts to change, the two ends of the slack roller 2 are respectively arranged on the rocker arm 11 on the same side through the connecting plate, the connecting plate is a long strip-shaped plate elongated along the conveying direction of the warp, and the connecting plate is symmetrically arranged about the fixed shaft 10. In this way, when the warp tension starts to change a little, the warp roller 2 can increase the rotation torque through the connecting plate to make the rocker arm 11 rotate to trigger the sensing device 3, so that the information of the change of the warp tension is timely fed back, and the warp tension can be timely adjusted when it just changes, thereby effectively ensuring the accuracy of the warp tension adjusting device of the utility model and further ensuring the product quality.

[0035] In this embodiment, the structure of the slack roller 2 can be designed in various ways as long as it can follow the warp to rotate and meet the demand of conveying the warp.

[0036] Further, the slack roller 2 comprises a roller and a roller shaft, the roller is rotatably arranged on the roller shaft to convey the warp, the two ends of the roller shaft are respectively fixed to the rocker arm 11 of the left swing mechanism and the right swing mechanism 1, and the axis of the roller shaft is located directly above the axis of the fixed shaft 10. Specifically, the roller and the roller shaft are matched through bearings.

[0037] Further, the warp let-off roller 2 can also be designed such that the roller cylinder and the roller shaft are fixedly connected to each other, and the two ends of the warp let-off roller 2 (i.e. the two ends of the roller shaft) are arranged on the swing arm 11 of the left and right swing mechanisms 1 through bearings, and the axis of the bearing seat of the bearing is located directly above the axis of the fixed shaft 10.

[0038] The embodiment of the utility model discloses a loom further, including any one of the warp tension adjusting device of above and the warp wallboard 4 of sending of being arranged in the left and right sides of loom, and the warp tension adjusting device is arranged respectively on the left and right sides of the warp wallboard 4 on both ends. The loom of the utility model can detect the change of warp tension in time and accurately by adopting the warp tension adjusting device, and the warp tension is restored to normal state in time through control device, effectively improve production efficiency, and guarantee product quality.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A warp tension adjustment device characterized by: The left swing mechanism, the right swing mechanism (1), the slack roller (2) and the sensing device (3); The left swing mechanism and the right swing mechanism (1) are respectively arranged on the left and right sides of the warp wall plate (4) of the loom and can rotate forward and backward along the conveying direction of the warp yarn; The two ends of the slack roller (2) are respectively arranged on the left swing mechanism and the right swing mechanism (1) for conveying and lifting the warp yarn, and when the tension of the warp yarn on the slack roller (2) changes, the left swing mechanism and the right swing mechanism (1) can be driven to rotate forward or backward; The sensing device (3) is connected with the control device of the loom, and the sensing device (3) is arranged to be able to sense the forward or backward swing of the left swing mechanism and the right swing mechanism (1) and transmit signals to the control device, and after receiving the signals from the sensing device (3), the control device controls the rotating speed of the weaving shaft of the loom to restore the normal tension of the warp yarn.

2. The thread tension adjustment device of claim 1, wherein: The left swing mechanism and the right swing mechanism (1) are basically the same in structure and each include a fixed shaft (10), a rocker arm (11) and a limiting mechanism (12); The fixed shaft (10) is fixed to the same side of the warp wall plate (4), and the fixed shaft (10) is parallel to the axis of the slack roller (2); The rocker arm (11) is rotatably arranged on the fixed shaft (10); The axis of the slack roller (2) is arranged on the rocker arm (11) and directly above the axis of the fixed shaft (10); The limiting mechanism (12) is fixed to the same side of the warp wall plate (4) for limiting the swing amplitude of the rocker arm (11).

3. The thread tension adjustment device of claim 2, wherein: The limiting mechanism (12) includes an upper limiting piece (121), a lower limiting piece (122) and a limiting shaft; The limiting shaft is fixed between the upper limiting piece (121) and the lower limiting piece (122); A limiting hole is provided on the first end of the rocker arm (11) for the limiting shaft to pass through.

4. The thread tension adjustment device of claim 3, wherein: The limiting mechanism (12) further includes a slack spring, which is vertically arranged on the limiting shaft and between the rocker arm (11) and the lower limiting piece (122) or between the rocker arm (11) and the upper limiting piece (121), and one end of the slack spring away from the rocker arm (11) is provided with the sensing device (3) to transmit the stretching force of the slack spring to the control device.

5. The thread tension adjustment device of claim 3, wherein: The limiting mechanism (12) further includes an upper limiting spring (123) and a lower limiting spring (124), the upper limiting spring (123) is located between the rocker arm (11) and the upper limiting piece (121), and the lower limiting spring (124) is located between the rocker arm (11) and the lower limiting piece (122); the end of the lower limiting spring (124) is provided with the sensing device (3).

6. The thread tension regulating device according to any one of claims 2 to 5, wherein: The end of the slack roller (2) is arranged on the rocker arm (11) through a connecting plate elongated along the conveying direction of the warp yarn, and the connecting plate is symmetrically arranged about the fixed shaft (10).

7. A thread tension regulating device according to any one of claims 2-5, characterized in that: The warp relaxing roller (2) comprises a roller cylinder and a roller shaft, the roller cylinder is rotatably arranged on the roller shaft to convey the warp yarn, two ends of the roller shaft are respectively fixed to the rocker arms (11) of the left and right swing mechanisms (1), and an axis of the roller shaft is located directly above an axis of the fixed shaft (10).

8. The thread tension adjustment device according to any one of claims 2-5, wherein: The two ends of the warp relaxing roller (2) are arranged on the rocker arms (11) of the left and right swing mechanisms (1) through bearings, and an axis of a bearing seat of the bearings is located directly above an axis of the fixed shaft (10).

9. A loom characterized by comprising: The warp tension adjusting device of any one of claims 1-8 and warp delivery wall plates (4) arranged on the left and right sides of the loom are provided, and two ends of the warp tension adjusting device are respectively arranged on the warp delivery wall plates (4) on the left and right sides.

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