Warp tension control device and textile device

Abstract

The application discloses a warp tension control device and a textile device, and belongs to the field of textiles. The warp tension control device comprises a yarn guide device, a torque device, a friction disc and a friction adjusting unit. The yarn guide device comprises a yarn storage disc and a second yarn guide wheel. The yarn storage disc can accommodate yarn and release the yarn. The released yarn passes through the second yarn guide wheel. The torque device comprises a first rod. The second yarn guide wheel is installed on the first rod. When the tension of the yarn on the second yarn guide wheel increases, the second yarn guide wheel can rotate around the first central axis in the first direction. When the tension of the yarn on the second yarn guide wheel decreases, the second yarn guide wheel can rotate around the first central axis in the second direction. The first direction and the second direction are opposite. The friction disc is rigidly connected with the yarn storage disc. The friction adjusting unit is configured to increase the rotational resistance of the yarn storage disc through the friction disc when the second yarn guide wheel rotates around the first central axis in the second direction.

Description

Technical Field

[0001] This invention relates to the field of textile machinery technology, specifically to a warp tension control device and a textile apparatus. Background Technology

[0002] Warp tension plays a crucial role in the weaving process, directly affecting fabric quality and production efficiency. Stable warp tension is one of the key factors ensuring weaving stability. Proper control of warp tension is essential for fabric quality; reasonable control of warp tension can not only improve production efficiency but also reduce costs. Currently, tension control devices can be broadly divided into traditional monofilament tension control (e.g., mechanical lever-type tension control devices) and electronic monofilament tension control (e.g., active spring stepper motor type tension control devices). Many improved tension control devices also exist. However, all of these devices have some drawbacks, such as the inability to constantly adjust warp tension, difficulty in achieving large yarn length compensation, and high production costs.

[0003] Patent CN101974823A discloses a compensable mechanical yarn tension control device, in which the yarn passes through a return disc with a coil spring, and the yarn is released or tightened by the clockwise or counterclockwise rotation of the return disc. Patent CN111321507B discloses a yarn tension adjustment device, which also achieves yarn tension control through a coil spring and a yarn storage disc, but further reduces friction between the yarn and the device by making the guide channel through the yarn slightly curved. Patent CN114515875A discloses an online adjustable constant tension control device and method, in which stable yarn tension is provided while the yarn passes between two thread guide rollers, which are equipped with elastic elements and rubber sleeves to protect the yarn.

[0004] The aforementioned improvements all involve modifications to the tension control device, either by combining mechanical or electronic elastic elements to optimize the tension control. However, in patents CN101974823A and CN111321507B, sliding friction exists between the yarn and the device. This friction is greater than rolling friction, resulting in more significant damage to the yarn. Furthermore, while patent CN114515875A uses rollers, the rollers exert pressure on the yarn, exacerbating frictional damage. Additionally, when a large number of yarns pass through the pressure rollers, accurate and uniform control of each yarn is difficult to achieve. Summary of the Invention

[0005] The purpose of this invention is to address the problems in the prior art by disclosing a warp tension control device, comprising:

[0006] A yarn guiding device includes a yarn storage tray and a second yarn guiding wheel. The yarn storage tray can hold yarn and release the yarn, and the released yarn passes through the second yarn guiding wheel.

[0007] A torque device includes a first rod, and a second guide wheel is mounted on the first rod. When the tension of the yarn on the second guide wheel increases, the second guide wheel can rotate around a first central axis in a first direction. When the tension of the yarn on the second guide wheel decreases, the second guide wheel can rotate around the first central axis in a second direction. The first direction and the second direction are opposite.

[0008] The friction disc is rigidly connected to the yarn storage disc.

[0009] The friction adjustment unit is configured to increase the rotational resistance of the yarn storage disc via the friction disc when the second guide wheel rotates about the first central axis in the second direction.

[0010] In the improved scheme, the friction adjustment unit includes a rope and a friction strip. One end of the rope is connected to a first rod, and the other end is connected to the friction strip. The friction strip is located on the outer peripheral surface of the friction disc. One end of the friction strip is connected to a second tension spring, and the other end of the second tension spring is fixed. When the rope applies and releases tension to the friction strip, it can change the friction strip's resistance to the rotation of the friction disc.

[0011] In the improved design, the warp tension control device also includes a bracket, and the torque device is fixed to the bracket via a first central shaft.

[0012] In the improved scheme, the torque device further includes a second rod, which is connected to the first rod at the first central axis. An iron ring is provided on the second rod, and the iron ring is connected to a first tension spring. The first tension spring is connected to a spring adjustment device, which can adjust the tension of the first tension spring.

[0013] In the improved solution, the spring adjustment device includes: a keycap, a buckle, and a locking hole. The first tension spring is connected to the keycap and is locked in the locking hole by the buckle.

[0014] In the improved design, the support includes: a lower crossbeam, an upper crossbeam, a first longitudinal beam, a second longitudinal beam, and a storage yarn tray support. A hole is drilled at one end of the upper crossbeam, through which the rope passes. The spring adjustment device is fixed to one end of the lower crossbeam.

[0015] In the improved design, the first central shaft includes a roller bearing, the torque device is fixed to the bracket via the roller bearing, and the roller shaft contains a limiter to allow it to rotate within a certain angle.

[0016] In the improved design, the yarn guiding device further includes a first heddle, a first yarn guide wheel, a third yarn guide wheel, and a second heddle, with the released yarn passing sequentially through the first heddle, the first yarn guide wheel, the second yarn guide wheel, the third yarn guide wheel, and the second heddle.

[0017] In the improved design, the first heddle and the first guide wheel are fixed on the first longitudinal beam, the second guide wheel is fixed on the top of the first rod at the upper end of the torque device, and the third guide wheel and the second heddle are fixed on the second longitudinal beam.

[0018] In the improved design, the support is further provided with an adjusting block. The adjusting block has a semi-circular channel, with a first central axis located in the channel. An arc-shaped rod is provided on the first central axis, and an arc-shaped channel is provided on the adjusting block. The arc-shaped rod can move in the arc-shaped channel, which is connected to vertically distributed adjusting cavities. A metal block is provided on the adjusting cavity, and the metal block can move in the adjusting cavity, thereby maintaining a constant pressure in the adjusting cavity.

[0019] This application also discloses a textile apparatus, including the aforementioned warp tension control device.

[0020] The yarn tension control device provided by this invention can achieve small wear and large length compensation of yarn, and at the same time achieve accurate and uniform control of the tension of multiple yarns.

[0021] This invention provides a yarn tension control device, which is installed on a bracket and multiple devices can be installed on the same bracket as needed; this device does not require holding the yarn with a pressure wheel during the yarn guiding process and the yarn bending angle is small, resulting in less friction on the yarn.

[0022] This invention compensates for warp tension by using a torque device, a tension spring, and a friction device. It also includes a tension spring control device to facilitate adjustment of yarn tension during use. Iron rings are designed at both ends of the tension spring and the friction strip to connect them, making it easy to replace tension springs with different elastic coefficients and friction strips with different roughness, thus making the device more adaptable.

[0023] The use of a torque device enables the invention to have large tension compensation and yarn length compensation. The combination of dual tension springs and friction strips makes the yarn tension fluctuation range smaller and easier to maintain stability. The heddle and guide wheel ensure that the yarn is stably led out to the next process. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the yarn tension control device provided in Embodiment 1 of the present invention;

[0025] Figure 2This is a left view of the device in Embodiment 1 of the present invention;

[0026] Figure 3 for Figure 1 Schematic diagram of the middle spring adjusting device;

[0027] Figure 4 This is a partial schematic diagram of embodiment 2 of this application;

[0028] Figure 5 This is a partial schematic diagram of embodiment 2 of this application;

[0029] In the diagram, the markings are: 1-bracket, 11-lower crossbeam, 12-upper crossbeam, 121-drill hole, 13-first longitudinal beam, 14-second longitudinal beam, 15-storage yarn tray bracket, 17-adjusting block, 171-arc channel, 172-adjusting cavity, 173-metal block, 2-torque device, 21-spring adjusting device, 22-first tension spring, 23-second tension spring, 24-friction strip, 25-friction 26-First rod, 27-Rope, 28-Roller bearing, 29-Second rod, 291-First central shaft, 292-Arc rod, 3-Yarn guiding device, 31-Yarn, 32-Yarn storage tray, 33-Second yarn guide wheel, 34-First heald, 35-First yarn guide wheel, 36-Third yarn guide wheel, 37-Second heald, 20-Iron ring, 211-Key cap, 212-Snap, 213-Clocking control. Detailed Implementation

[0030] The present invention will now be described in detail with reference to the accompanying drawings.

[0031] Example 1:

[0032] This application discloses a warp tension control device, comprising:

[0033] The yarn guiding device 3 includes a yarn storage tray 32 and a second yarn guiding wheel 33. The yarn storage tray 32 can accommodate yarn 31 and release yarn 31. The released yarn passes through the second yarn guiding wheel 33.

[0034] The torque device 2 includes a first rod 26, and the second guide wheel 33 is mounted on the first rod 26. When the tension of the yarn on the second guide wheel 33 increases, the second guide wheel 33 can rotate around the first central axis 291 in a first direction. When the tension of the yarn on the second guide wheel 33 decreases, the second guide wheel 33 can rotate around the first central axis in a second direction. The first direction and the second direction are opposite.

[0035] Friction disc 25 is rigidly connected to yarn storage disc 32;

[0036] The friction adjustment unit is configured to increase the rotational resistance of the yarn storage disc 32 via the friction disc 25 when the second guide wheel 33 rotates around the first central axis in the second direction.

[0037] In a more specific embodiment, the friction adjustment unit includes a rope 27 and a friction strip 24. One end of the rope 27 is connected to the first rod 26, and the other end is connected to the friction strip 24. The friction strip 24 is located on the outer peripheral surface of the friction disc 25. One end of the friction strip 24 is connected to a second tension spring 23, and the other end of the second tension spring 23 is fixed. When the rope 27 applies and releases tension to the friction strip 24, it can change the resistance of the friction strip 24 to the rotation of the friction disc 25.

[0038] In a more specific embodiment, the warp tension control device further includes a bracket 1, and the torque device 2 is fixed to the bracket 1 via a first central shaft.

[0039] The torque device 2 further includes a second rod 29, which is connected to the first rod 26 at the first central axis. An iron ring 20 is provided on the second rod 29, and the iron ring 20 is connected to a first tension spring 22. The first tension spring 22 is connected to a spring adjustment device 21, which can adjust the tension of the first tension spring 22.

[0040] like Figure 3 As shown, the spring adjustment device 21 includes a keycap 211, a buckle 212, and a locking hole 213. The first tension spring 22 is connected to the keycap 211 and is locked in the locking hole 213 by the buckle 212. Multiple sets of locking holes 213 are provided, and the elasticity of the first tension spring 22 is adjusted by switching the keycap 211 between different sets of locking holes 213.

[0041] In a more specific embodiment, the support 1 includes: a lower crossbeam 11, an upper crossbeam 12, a first longitudinal beam 13, a second longitudinal beam 14, and a storage yarn tray support 15. One end of the upper crossbeam 12 has a drilled hole 121, through which the rope 27 passes. The spring adjustment device 21 is fixed to one end of the lower crossbeam 11.

[0042] In a more specific embodiment, the first central shaft includes a roller bearing 28, and the torque device 2 is fixed to the bracket 1 via the roller bearing 28. The roller bearing 28 contains a limiter that allows it to rotate within a certain angle.

[0043] In a more specific embodiment, the yarn guiding device 3 further includes a first heddle 34, a first yarn guiding wheel 35, a third yarn guiding wheel 36, and a second heddle 37, with the released yarn passing sequentially through the first heddle 34, the first yarn guiding wheel 35, the second yarn guiding wheel 33, the third yarn guiding wheel 36, and the second heddle 37.

[0044] In a more specific embodiment, the first heddle 34 and the first guide wheel 35 are fixed on the first longitudinal beam 13, the second guide wheel 33 is fixed on the top of the first rod 26 at the upper end of the torque device 2, and the third guide wheel 36 and the second heddle 37 are fixed on the second longitudinal beam 14.

[0045] When using this device, if there is excess yarn in the previous yarn feeding process, the second guide wheel 33 is lifted upwards to tighten the yarn due to the retraction of the first tension spring 22. Simultaneously, this movement pulls the friction belt 24 via the rope 27, increasing the friction between it and the friction disc 25 and inhibiting yarn feeding from the yarn storage disc 32. Conversely, when the yarn is tightened in the previous process, the yarn tension causes the second guide wheel 33 to move downwards to loosen the yarn, simultaneously releasing the friction belt and reducing the friction between it and the friction disc 25, allowing the yarn storage disc 32 to feed yarn. The tension can be adjusted via the spring adjustment device 21.

[0046] Preferably, the yarn is 120tex alumina twisted filament yarn, with 6 alumina yarns simultaneously drawn from the yarn storage tray. The alumina yarn has a smooth surface and is easy to separate after overlapping, so a large number of yarns can be drawn from the yarn storage tray when available. All guide wheels have smooth stainless steel skins to facilitate the passage of alumina yarn. Considering the brittleness and poor abrasion resistance of alumina yarn, the surface of the guide wheels must be smooth. The first and second heddles are both 60. 120tex alumina twisted filament yarn is relatively fine, so heddles with a larger number of teeth are used to facilitate the control of the alumina yarn. The heddles teeth are cylindrical to further prevent wear of the alumina yarn during the weaving process.

[0047] The first tension spring has a spring constant of 100 N / M, and the second tension spring has a spring constant of 150 N / M. Figure 3 The buckle is initially positioned in the third buckle hole from the top, and can be adjusted at any time during the weaving process. The friction strip is made of wear-resistant cowhide. The two tension springs are both in a state of slight tension in the initial position. The tension of the two is balanced by the lever device, so that the first guide wheel is in the appropriate position.

[0048] Combination Figure 1 The rope is made of nylon elastic rope with a stiffness coefficient of 50N / M. The nylon elastic rope is initially in a stretched state. Both the nylon elastic rope and the first tension spring are in a stretched state, which is conducive to the friction-resistant leather strip adhering tightly to the friction disc.

[0049] Take the weaving process of carbon fiber yarn as an example;

[0050] This embodiment uses a torque device 2 and a yarn and yarn guiding device 3. The yarn is 198tex carbon fiber yarn. Two carbon fiber yarns are drawn out simultaneously from the yarn storage tray. The carbon fibers are easy to stick together after overlapping, and easy to cause the yarn to fray after separation. Therefore, the number of carbon fiber yarns drawn out is small. All the yarn guiding wheels are covered with rubber. The hardness value of the rubber surface can be changed according to different working conditions to facilitate the passage of carbon fiber yarn and prevent slippage. The first heddle and the second heddle are both 40. The 198tex carbon fiber yarn is relatively flat, so the heddle with a smaller number of reed teeth is used to facilitate the passage of carbon fiber yarn. The heddle teeth are flat to prevent the carbon fiber yarn from being worn by the heddle during the weaving process.

[0051] The first tension spring has a spring constant of 200 N / M, and the second tension spring has a spring constant of 100 N / M. Figure 3 The buckle is initially positioned in the fifth hole from the top, and can be adjusted at any time during the weaving process. The friction strip is made of wear-resistant cowhide. The two tension springs are both in a state of slight tension in the initial position. The tension of the two is balanced by the lever device, so that the first guide wheel is in the appropriate position.

[0052] Combination Figure 1 The rope is made of nylon elastic rope with a stiffness coefficient of 80N / M. The nylon elastic rope is initially in a stretched state. Both the nylon elastic rope and the first tension spring are in a stretched state, which is conducive to the friction-resistant leather strip adhering tightly to the friction disc.

[0053] Example 2:

[0054] Unlike embodiment 1, the torque device does not include the second rod 29 and the spring adjustment device 21. In this case, the tension of the second guide wheel 33 is controlled by the first rod 26 and the first central shaft 291. Specifically, the support 1 is provided with an adjustment block 17, which is a cuboid structure. The surface of the adjustment block 17 has a semi-circular groove, and part of the first central shaft 291 is located in this groove. The first central shaft 291 and the first rod 26 are fixedly connected. An arc-shaped rod 292 is provided on the first central shaft 291, and an arc-shaped channel 171 is provided on the adjustment block 17. The arc-shaped rod 292 can move within the arc-shaped channel 171, which connects to vertically distributed adjustment cavities 172. A metal block 173 is provided on the adjustment cavity 172, and the metal block 173 can move within the adjustment cavity 172, thereby maintaining a constant pressure in the adjustment cavity.

[0055] In some specific designs, without a friction adjustment unit and without considering atmospheric pressure, the pressure of the adjustment chamber 172 on the arc-shaped rod 292 is the torque on the first central shaft 291. When there is excess yarn in the previous yarn feeding process, the second guide wheel 33 will retract. Figure 1 (When the pointer rotates clockwise), the first central shaft (291) rotates accordingly, further causing the arc-shaped rod 292 to rotate. The rotation of the arc-shaped rod 292 allows the metal block 173 to move up and down in the adjustment cavity 172. Under this scheme, the air pressure in the adjustment cavity 172 remains unchanged, so the torque on the second guide wheel 33 remains unchanged, and the tension on the yarn remains unchanged.

[0056] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A warp tension control device, characterized in that, Including: The yarn guiding device (3) includes a yarn storage tray (32) and a second yarn guiding wheel (33). The yarn storage tray (32) can hold yarn (31) and release yarn (31). The released yarn passes through the second yarn guiding wheel (33). The torque device (2) includes a first rod (26), and the second guide wheel (33) is mounted on the first rod (26). When the tension of the yarn on the second guide wheel (33) increases, the second guide wheel (33) can rotate around the first central axis (291) in a first direction. When the tension of the yarn on the second guide wheel (33) decreases, the second guide wheel (33) can rotate around the first central axis (291) in a second direction. The first direction and the second direction are opposite. Friction disc (25), which is rigidly connected to yarn storage disc (32); The friction adjustment unit is configured to increase the rotational resistance of the yarn storage disc (32) by means of the friction disc (25) when the second guide wheel (33) rotates around the first central axis (291) in the second direction. The warp tension control device also includes a bracket (1), and the torque device (2) is fixed on the bracket (1) via a first central shaft (291); The bracket (1) is also provided with an adjustment block (17), which has a semi-circular groove. The first central shaft (291) is located in the groove. An arc rod (292) is provided on the first central shaft (291). An arc channel (171) is provided on the adjustment block (17). The arc rod (292) can move in the arc channel (171). The arc channel (171) is connected to a vertically distributed adjustment cavity (172). A metal block (173) is provided on the adjustment cavity (172). The metal block (173) can move in the adjustment cavity (172), thereby keeping the adjustment cavity at a constant pressure.

2. The warp tension control device according to claim 1, characterized in that, The friction adjustment unit includes a rope (27) and a friction strip (24). One end of the rope (27) is connected to the first rod (26), and the other end is connected to the friction strip (24). The friction strip (24) is located on the outer peripheral surface of the friction disc (25). The friction strip (24) is connected to one end of the second tension spring (23), and the other end of the second tension spring (23) is fixed. When the rope (27) applies and releases tension to the friction strip (24), it can change the rotational resistance of the friction strip (24) to the friction disc (25).

3. The warp tension control device according to claim 2, characterized in that, The first central shaft (291) includes a roller bearing (28), and the torque device (2) is fixed on the bracket (1) by the roller bearing (28). The roller bearing (28) contains a limiter to rotate within a certain angle.

4. The warp tension control device according to claim 3, characterized in that, The yarn guiding device (3) further includes a first heddle (34), a first yarn guide wheel (35), a third yarn guide wheel (36), and a second heddle (37). The released yarn passes through the first heddle (34), the first yarn guide wheel (35), the second yarn guide wheel (33), the third yarn guide wheel (36), and the second heddle (37) in sequence.

5. The warp tension control device according to claim 4, characterized in that, The first heddle (34) and the first guide wheel (35) are fixed on the first longitudinal beam (13), the second guide wheel (33) is fixed on the top of the first rod (26) at the upper end of the torque device (2), and the third guide wheel (36) and the second heddle (37) are fixed on the second longitudinal beam (14).

6. A textile apparatus, characterized in that, Includes the warp tension control device as described in any one of claims 1-5.

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