Constant-tension-controlled carbon fiber weft yarn releasing device

Abstract

The invention discloses a constant tension control carbon fiber weft releasing device which comprises a weft storage frame, a spool, a tension detection unit and a tensioner, and the spool is rotationally arranged on the upper portion of the weft storage frame and used for storing and releasing weft; the tension detection unit is arranged on the lower portion of the weft storage frame and used for detecting tension in the weft releasing process. The tensioner is arranged between the spool and the weft storage frame, and the tensioner controller adjusts the tension of the weft yarn when the spool releases according to the tension change of the weft yarn detected by the tension detection unit. According to the constant-tension-controlled carbon fiber weft releasing device, the tension applied to the weft by the tensioner can be adjusted according to different tension applied to the weft, so that the tension of the weft is kept consistent in the whole spinning process, and the flatness and uniformity of fabric are improved.

Description

Technical Field

[0001] The present invention relates to the field of textile technology, and more particularly to a carbon fiber weft yarn releasing device controlled by constant tension. Background Art

[0002] Carbon fiber refers to high-strength and high-modulus fiber with a carbon content of more than 90%. Carbon fiber is mainly composed of carbon elements and has the characteristics of high temperature resistance, friction resistance, thermal conductivity and corrosion resistance. It has a fibrous appearance, is soft, and can be processed into various fabrics. Because its graphite microcrystalline structure is preferentially oriented along the fiber axis, it has high strength and modulus along the fiber axis. The application of carbon fiber fabrics is becoming more and more extensive, and has been widely used in building materials, transportation, aerospace, medical and other fields.

[0003] Carbon fiber yarn is produced by textile production using carbon fiber. Carbon fiber yarn is mainly used in the textile and weaving industries. It can be used to produce various types of carbon fiber fabrics, woven tapes, etc. During the weaving process, whether the tension of the weft thread can be kept constant directly affects the smoothness of the fabric.

[0004] Patent document CN 214934941 U discloses a weft tension device for a three-dimensional loom, comprising a base plate mounted with a yarn bobbin, a weft clamping mechanism, and a tensioning mechanism. The bobbin is used to supply yarn; the weft clamping mechanism is used to clamp the yarn when tension compensation is required and to release the yarn when tension compensation is not required. The tensioning mechanism is used to provide tension compensation to the yarn clamped by the weft clamping mechanism. This technical solution uses a clamping mechanism to clamp the yarn to provide weft tension, but the clamping force cannot be adjusted according to the tension applied to the weft, and therefore cannot maintain constant weft tension during the weaving process.

[0005] Therefore, it is necessary to propose a carbon fiber weft yarn releasing device with constant tension control to solve the problems existing in the prior art. Summary of the Invention

[0006] The Summary of the Invention introduces a series of simplified concepts that will be further described in the Detailed Description of the Invention. The Summary of the Invention is not intended to limit the key features and essential features of the claimed technical solution, nor is it intended to determine the scope of protection of the claimed technical solution.

[0007] In order to at least partially solve the above problems, the present invention provides a carbon fiber weft yarn releasing device with constant tension control, comprising: a weft storage frame, a yarn bobbin, a tension detection unit and a tensioner, wherein the yarn bobbin is rotatably arranged on the upper part of the weft storage frame for storing and releasing weft yarn; the tension detection unit is arranged on the lower part of the weft storage frame for detecting the tension during the weft yarn releasing process; the tensioner is arranged between the yarn bobbin and the weft storage frame, and the tensioner controller adjusts the tension of the tensioner when the weft yarn is released from the yarn bobbin according to the tension change of the weft yarn detected by the tension detection unit.

[0008] Preferably, the tension detection unit includes a first connecting plate, a tension sensor, and a guide wheel. The first connecting plate is fixedly connected to the lower part of the weft storage frame, the tension sensor is arranged on the first connecting plate, and the guide wheel is rotatably connected to the tension sensor.

[0009] Preferably, the tensioner includes a turntable fixedly connected to the rear end face of the bobbin, a damping disk in contact with the end face of the turntable facing away from the bobbin, the damping disk being slidably arranged in a cylinder, the cylinder being fixedly connected to a connecting plate on the upper part of the weft storage frame, the cylinder and the bobbin being coaxially arranged, the turntable and the damping disk being both annular, one end of a spring being fixedly connected to the annular end face of the damping disk on the side facing away from the turntable, the other end of the spring being fixedly connected to the end face of the adjusting disk on the side facing the damping disk, and the adjusting disk being slidably arranged in the cylinder;

[0010] At least two sliding grooves are arranged on the inner wall of the cylinder along the axis direction of the cylinder. Slide blocks corresponding to the sliding grooves are respectively arranged on the outer circumferences of the damping plate and the regulating plate, and the slide blocks slide in the sliding grooves.

[0011] Preferably, threaded holes are symmetrically arranged on the adjusting disk, and screws are rotatably arranged at positions corresponding to the threaded holes on the second connecting plate. The screws are threadedly connected to the threaded holes. The end of the screw away from the adjusting disk passes through the second connecting plate and is fixedly connected to the first gear. The first gear is meshed with the gear ring rotatably connected to the second connecting plate. The second gear is rotatably arranged on the side of the second connecting plate away from the adjusting disk, and the second gear is meshed with the gear ring.

[0012] Preferably, the weft feeding device further comprises an anti-jumping unit, the anti-jumping unit comprising an anti-jumping plate, the anti-jumping plate being arranged on the upper part of the weft storage frame, the anti-jumping plate being spaced apart from the second connecting plate, three groups of anti-jumping wheels being spaced apart in the horizontal direction on the anti-jumping plate, and a floating wheel group being arranged below the first group and the second group of anti-jumping wheels;

[0013] The floating wheel group includes horizontal fixed plates arranged parallel to the upper and lower edges of the anti-jump line plate, two parallel longitudinal rods arranged between the two horizontal fixed plates, floating rods slidingly arranged on the two longitudinal rods, and floating wheels rotatingly arranged on the outer circumference of the floating rod between the two longitudinal rods.

[0014] Preferably, floating springs are respectively sleeved on the upper and lower sides of the floating rod on the longitudinal rod, one end of the floating spring is fixedly connected to the floating rod, and the other end of the floating spring is fixedly connected to the horizontal fixed plate.

[0015] Preferably, it further comprises a yarn break detection component, which comprises a detection plate and a yarn break detector arranged in a U-shaped groove on the detection plate, and the detection plate is arranged on the first connecting plate.

[0016] Preferably, the detection plate is connected to the first connecting plate by a first bolt and a second bolt, the first connecting plate is provided with an arc-shaped long hole, and the second bolt passes through the long hole to be connected to the detection plate.

[0017] Preferably, the yarn break detector comprises a cylindrical detector housing, a laser emitter and a photoelectric sensor are arranged opposite to each other on the inner wall of the detector housing, the photoelectric sensor is electrically connected to the optical coupler, and the optical coupler is electrically connected to the processor.

[0018] Preferably, a damping material layer is provided on the surface of the damping disc close to the turntable.

[0019] Compared with the prior art, the present invention has at least the following beneficial effects:

[0020] The carbon fiber weft yarn release device with constant tension control described in the present invention can adjust the tension applied to the weft yarn by the tensioner according to the different pulling forces applied to the weft yarn, so that the tension of the weft yarn remains consistent throughout the entire weaving process, thereby improving the flatness and uniformity of the fabric.

[0021] The other advantages, objectives and features of the constant tension controlled carbon fiber weft yarn release device of the present invention will be partially reflected in the following description and will also be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic structural diagram of the carbon fiber weft yarn releasing device with constant tension control disclosed in the present invention;

[0024] Figure 2 It is a structural schematic diagram of the tension detection unit disclosed in the present invention;

[0025] Figure 3 It is a structural schematic diagram of the tensioner disclosed in the present invention;

[0026] Figure 4 It is a structural schematic diagram of the tensioner gear disclosed in the present invention;

[0027] Figure 5 It is a structural schematic diagram of the anti-jumping unit disclosed in the present invention;

[0028] Figure 6 This is a schematic structural diagram of the floating wheel disclosed in the present invention;

[0029] Figure 7 This is a structural schematic diagram of the yarn break detection assembly disclosed in the present invention;

[0030] Figure 8 This is a rear view of the yarn break detection assembly disclosed in the present invention.

[0031] In the figure: 1. Weft storage rack; 2. Yarn bobbin; 3. Tension detection unit; 4. Tensioner controller; 5. First connecting plate; 6. Tension sensor; 61. Cantilever shaft; 7. Guide wheel; 8. Turntable; 9. Damping disk; 10. Cylinder; 11. Second connecting plate; 12. Spring; 13. Adjusting disk; 14. Threaded hole; 15. Screw; 16. First gear; 17. Ring gear; 18. Second gear; 19. Anti-jumping unit; 20. Anti-jumping plate; 21. Anti-jumping wheel; 22. Horizontal fixing plate; 23. Longitudinal rod; 24. Floating rod; 25. Floating wheel; 26. Floating spring; 27. Yarn break detection assembly; 28. Detection plate; 29. U-shaped groove; 30. Yarn break detector; 31. First bolt; 32. Second bolt; 33. Long hole, 100. Weft yarn. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments so that those skilled in the art can implement the invention with reference to the description.

[0033] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0034] like Figure 1-4 As shown, the present invention provides a carbon fiber weft yarn releasing device with constant tension control, comprising: a weft storage frame 1, a yarn bobbin 2, a tension detection unit 3 and a tensioner, wherein the yarn bobbin 2 is rotatably arranged on the upper part of the weft storage frame 1, and is used to store and release the weft yarn 100; the tension detection unit 3 is arranged at the lower part of the weft storage frame 1, and is used to detect the tension of the weft yarn 100 during the release process; the tensioner is arranged between the yarn bobbin 2 and the weft storage frame 1, and the tensioner controller 4 adjusts the tension of the tensioner when the weft yarn 100 is released from the yarn bobbin according to the tension change of the weft yarn 100 detected by the tension detection unit 3.

[0035] The tension detection unit 3 includes a first connecting plate 5, a tension sensor 6, and a guide wheel 7. The first connecting plate 5 is fixedly connected to the lower part of the weft storage frame 1, the tension sensor 6 is arranged on the first connecting plate 5, and the guide wheel 7 is rotatably connected to the tension sensor 6.

[0036] The tensioner includes a turntable 8 fixedly connected to the rear end face of the bobbin 2, a damping disc 9 in contact with the end face of the turntable 8 facing away from the bobbin 2, the damping disc 9 is slidably arranged in a cylinder 10, the cylinder 10 is fixedly connected to the second connecting plate 11 on the upper part of the weft storage frame 1, the cylinder 10 is coaxially arranged with the bobbin 2, the turntable 8 and the damping disc 9 are both annular, one end of a spring 12 is fixedly connected to the annular end face of the damping disc 9 on the side facing away from the turntable 8, the other end of the spring 12 is fixedly connected to the end face of the adjusting disc 13 facing the damping disc 9, and the adjusting disc 13 is slidably arranged in the cylinder 10;

[0037] At least two chute grooves are provided on the inner wall of the cylinder 10 along the axis of the cylinder. Slide blocks corresponding to the chute grooves are provided on the outer circumferences of the damping plate 9 and the regulating plate 13 respectively, and the slide blocks slide in the chute grooves.

[0038] Threaded holes 14 are symmetrically provided on the adjusting disk 13, and a screw 15 is rotatably provided at a position corresponding to the threaded hole 14 on the second connecting plate 11. The screw 15 is threadedly connected to the threaded hole 14. The end of the screw 15 away from the adjusting disk 13 passes through the second connecting plate 11 and is fixedly connected to the first gear 16. The first gear 16 is meshed with a ring gear 17 rotatably connected to the connecting plate 11. A second gear 18 is rotatably provided on the side of the second connecting plate 11 away from the adjusting disk 13, and the second gear 18 is meshed with the ring gear 17.

[0039] The working principle of the above technical solution is:

[0040] The yarn drum 2 on the weft storage frame 1 releases the weft yarn 100, and the weft yarn 100 passes through the tension detection unit 3 and the yarn break detector at the bottom of the weft storage frame 1. The tension detection unit 3 is used to detect the tension of the weft yarn 100 during the release process, and then the weft yarn 100 enters the loom through the anti-jumping wheel of the anti-jumping unit.

[0041] The yarn bobbin 2 is arranged at the upper right end of the weft storage frame 1, and is rotatably connected to the second connecting plate 11 on the upper part of the weft storage frame 1, and is used to store and release the weft yarn 100; the tension detection unit 3 is fixedly arranged in the middle of the lower part of the weft storage frame 1, and is used to detect the tension of the weft yarn 100 during the release process; the tensioner is arranged between the yarn bobbin 2 and the weft storage frame 1, and the tensioner controller 4 adjusts the tension of the weft yarn 100 when the yarn bobbin is released according to the tension change of the weft yarn 100 detected by the tension detection unit 3. The tensioner controller 4 is fixedly connected to the second connecting plate 11, and the tensioner controller 4 is spaced apart from the yarn bobbin. The tensioner controller 4 includes a tension processor.

[0042] The tension detection unit 3 includes a first connecting plate 5, a tension sensor 6, and a guide wheel 7. The first connecting plate 5 is fixedly connected to the lower part of the weft storage frame 1. The tension sensor 6 is arranged on the first connecting plate 5. The guide wheel 7 is rotatably connected to the tension sensor 6. The tension sensor 6 is electrically connected to the tension processor.

[0043] The tensioner includes a turntable 8 fixedly connected to the rear end face of the bobbin 2, a damping disc 9 in contact with the end face of the turntable 8 facing away from the bobbin 2, the damping disc 9 is slidably arranged in a cylinder 10, the cylinder 10 is fixedly connected to the second connecting plate 11 on the upper part of the weft storage frame 1, the cylinder 10 is coaxially arranged with the bobbin 2, the turntable 8 and the damping disc 9 are both annular, one end of a spring 12 is fixedly connected to the annular end face of the damping disc 9 on the side facing away from the turntable 8, the other end of the spring 12 is fixedly connected to the end face of the adjusting disc 13 facing the damping disc 9, and the adjusting disc 13 is slidably arranged in the cylinder 10;

[0044] At least two chute grooves are provided on the inner wall of the cylinder 10 along the axis of the cylinder. Slide blocks corresponding to the chute grooves are provided on the outer circumferences of the damping plate 9 and the regulating plate 13 respectively, and the slide blocks slide in the chute grooves.

[0045] Threaded holes 14 are symmetrically arranged on the adjusting disk 13, and a screw 15 is rotatably arranged at a position corresponding to the threaded hole 14 on the second connecting plate 11. The screw 15 is threadedly connected to the threaded hole 14, and the end of the screw 15 away from the adjusting disk 13 passes through the second connecting plate 11 and is fixedly connected to the first gear 16. The first gear 16 is meshed with a ring gear 17 rotatably connected to the second connecting plate 11. A second gear 18 is rotatably arranged on the side of the second connecting plate 11 away from the adjusting disk 13, and the second gear 18 is meshed with the ring gear 17. A motor is fixedly arranged on the side of the second connecting plate 11 away from the adjusting disk 13, and the power output shaft of the motor is fixedly connected to the second gear. The motor is electrically connected to the tension processor, and the motor is a reversible motor.

[0046] Since the weft yarn 100 needs to perform reciprocating motion during the weaving process of the loom, the tension on the weft yarn 100 during the release process also changes periodically. The tension mechanism of the existing weft yarn 100 release device provides a fixed clamping force on the weft yarn 100 to ensure the tension of the weft yarn 100 during the release process. However, due to the fixed clamping force, when the weft yarn 100 is subjected to different tensions during the release process, the tension of the weft yarn 100 itself will be different due to the different tensions, which will cause the quality of the finished product of the loom to be affected by the change in the tension of the weft yarn 100. The tension sensor 6 adopts a cantilever tension sensor, and the guide wheel 7 is rotatably arranged on the cantilever. On the cantilever shaft 61 of the tension sensor, the weft yarn 100 is led out from the bobbin 2 and then passes around the guide wheel 7. A groove along the circumferential direction is opened on the circumferential surface of the guide wheel 7. The cross section of the groove is V-shaped. The weft yarn 100 passes around the V-shaped groove of the guide wheel 7 to prevent the weft yarn 100 from falling off. The tension detection unit 3 is electrically connected to the tension processor. When the weft yarn 100 is pulled by the loom, the tension sensor 6 detects the tension of the weft yarn 100 and transmits it to the tension processor. When the tension processor detects the tension change of the weft yarn 100, the tension processor controls the motor rotation of the tensioner to make the adjustment plate 14 move away from or close to the damping disk 9, and changes the damping disk 9 to the spring 9. The pressure of the turntable 8 controls the resistance of the bobbin 2 to releasing the weft yarn 100, thereby changing the tension of the bobbin 2 in releasing the weft yarn 100, so that the weft yarn 100 remains constant during the release process. For example, when the tension sensor 6 detects that the tension of the weft yarn 100 decreases, the tension processor controls the motor to rotate forward, and drives the screw 15 to rotate through the second gear 18, the ring gear 17 and the first gear 14. The screw 15 drives the adjusting disk 13 to approach the damping disk 9 through the threaded hole on the adjusting disk 13. The compression spring 12 increases the pressure between the damping disk 9 and the turntable 8, which increases the rotational resistance of the bobbin 2, thereby increasing the tension of the bobbin 2 when releasing the weft yarn 100. Conversely, the tension sensor 6 When it is detected that the tension of the weft yarn 100 increases, the tension processor controls the motor to reverse, and drives the screw 15 to rotate through the second gear 18, the ring gear 17 and the first gear 14. The screw 15 drives the adjusting disk 13 away from the damping disk 9 through the threaded hole on the adjusting disk 13, and the compression spring 12 reduces the pressure between the damping disk 9 and the turntable 8, so that the rotational resistance of the bobbin 2 is reduced. The present application adopts the method of changing the resistance of the bobbin to change the tension of the released weft yarn 100, and can also prevent the damage to the weft yarn 100 when the clamping device is used to clamp the weft yarn 100 to provide tension in the prior art, reduce the wear on the weft yarn 100, and reduce the occurrence of weft yarn 100 breakage.

[0047] In order to prevent the damping disc 9 from rotating in the cylinder 10, a slide groove is opened on the inner wall of the cylinder 10 along the axis direction of the cylinder 10. Multiple slide grooves can be set along the circumferential direction of the cylinder 10. Slide blocks are fixedly connected to the outer circumferential surfaces of the damping disc 9 and the adjusting disc 13 at positions opposite to the slide grooves, and the slide blocks are slidably set in the slide grooves.

[0048] Beneficial effects of the above technical solution:

[0049] The carbon fiber weft yarn release device with constant tension control described in the present invention can adjust the tension applied to the weft yarn by the tensioner according to the different pulling forces applied to the weft yarn, so that the tension of the weft yarn remains consistent throughout the entire weaving process, thereby improving the flatness and uniformity of the fabric.

[0050] like Figure 5-6 As shown, in one embodiment, it further includes an anti-jumping unit 19, which includes an anti-jumping plate 20. The anti-jumping plate 20 is arranged on the upper part of the weft storage frame 1, and the anti-jumping plate 20 is spaced apart from the second connecting plate 11. Three groups of anti-jumping wheels 21 are spaced apart in the horizontal direction on the anti-jumping plate 20, and a floating wheel group is arranged below the first group and the second group of anti-jumping wheels 21.

[0051] The floating wheel group includes a horizontal fixed plate 22 arranged parallel to the upper and lower edges of the anti-jump wire plate 20, two parallel longitudinal rods 23 are arranged between the two horizontal fixed plates 22, a floating rod 24 is slidably arranged on the two longitudinal rods 23, and a floating wheel 25 is rotatably arranged on the floating rod 24 located on the outer circumference between the two longitudinal rods 23.

[0052] Floating springs 26 are respectively sleeved on the upper and lower sides of the floating rod 24 on the longitudinal rod 23 . One end of the floating spring 26 is fixedly connected to the floating rod 24 , and the other end of the floating spring 26 is fixedly connected to the horizontal fixed plate 22 .

[0053] The working principle of the above technical solution is as follows: the anti-jumping plate 20 is arranged at the upper left end of the weft storage frame 1, the anti-jumping plate 20 is spaced apart from the second connecting plate 11, three groups of anti-jumping wheels 21 are spaced apart in the horizontal direction on the anti-jumping plate 20, and a floating wheel group is arranged below the first and second groups of anti-jumping wheels 21;

[0054] The floating wheel group includes a horizontal fixed plate 22 arranged parallel to the upper and lower edges of the anti-jump wire plate 20, two parallel longitudinal rods 23 are arranged between the two horizontal fixed plates 22, a floating rod 24 is slidably arranged on the two longitudinal rods 23, and a floating wheel 25 is rotatably arranged on the floating rod 24 located on the outer circumference between the two longitudinal rods 23.

[0055] Floating springs 26 are respectively sleeved on the upper and lower sides of the floating rod 24 on the longitudinal rod 23 . One end of the floating spring 26 is fixedly connected to the floating rod 24 , and the other end of the floating spring 26 is fixedly connected to the horizontal fixing plate 22 .

[0056] The weft yarn 100 passes over the first set of anti-jumping wheels and then goes back over the second and third anti-jumping wheels from the bottom of the floating wheel. V-shaped grooves along the circumferential direction are provided on the outer circumferential surfaces of the anti-jumping wheel 21 and the floating wheel 25, and the weft yarn 100 passes around in the V-shaped grooves.

[0057] The beneficial effects of the above technical solution are: it can prevent the weft yarn from jumping during the feeding process, affecting the normal textile process; when the weft yarn is fed into the loom, due to the weft yarn threading mechanism or other reasons, the tension on the weft yarn will suddenly increase, which will break the weft yarn. The loom needs to stop to recover the weft yarn. The floating wheel is set to buffer the sudden increase in tension, prevent the weft yarn from being broken, and assist in adjusting the weft yarn tension.

[0058] In one embodiment, Figure 2 、 Figure 7-Figure 8 As shown, the apparatus further includes a yarn break detection assembly 27 , which includes a detection plate 28 and a yarn break detector 30 disposed in a U-shaped groove 29 on the detection plate 28 . The detection plate 28 is disposed on the first connecting plate 5 .

[0059] The detection plate 28 is connected to the first connecting plate 5 by a first bolt 31 and a second bolt 32 . The first connecting plate 5 is provided with an arc-shaped long hole 33 . The second bolt 32 passes through the long hole 33 and is connected to the detection plate 28 .

[0060] The working principle of the above technical solution is as follows: the yarn break detection assembly 27 includes a detection plate 28 and a yarn break detector 30 arranged in a U-shaped groove 29 on the detection plate 28 , and the detection plate 28 is arranged on the first connecting plate 5 .

[0061] The detection plate 28 is connected to the first connecting plate 5 by a first bolt 31 and a second bolt 32 . The first connecting plate 5 is provided with an arc-shaped long hole 33 . The second bolt 32 passes through the long hole 33 and is connected to the detection plate 28 .

[0062] The weft yarn passes through the inside of the yarn break detector 30. When the detection plate 28 is installed, the detection plate can rotate about the axis of the first bolt, and the second bolt 32 can slide in the long hole 33. The detector housing of the yarn break detector 30 is cylindrical. The position of the yarn break detector 30 is adjusted so that the axis of the detector housing coincides with the weft yarn 100.

[0063] The beneficial effects of the above technical solution are as follows: the yarn break detector 30 detects the weft yarn passing through the inside thereof to detect whether the weft yarn is broken, thereby preventing the loom from continuing to work after the yarn is broken, causing damage to the loom and waste of raw materials.

[0064] In one embodiment, the yarn break detector 30 includes a cylindrical detector housing, on the inner wall of which a laser emitter and a photoelectric sensor are disposed opposite each other. The photoelectric sensor is electrically connected to an optical coupler, and the optical coupler is electrically connected to a processor.

[0065] The working principle of the above technical solution is as follows: the yarn break detector 30 comprises a cylindrical detector housing, on the inner wall of which a laser emitter and a photoelectric sensor are arranged opposite to each other, the photoelectric sensor is electrically connected to an optical coupler, and the optical coupler is electrically connected to a processor.

[0066] The weft yarn 100 passes through the center of the yarn break detector 30. The laser emitter and the photoelectric sensor are located on both sides of the weft yarn 100. The laser emitter emits laser light to the photoelectric sensor. Since the weft yarn 100 will vibrate during the feeding process, the diameter of the laser beam emitted by the laser emitter is greater than the thickness of the weft yarn 100. When the weft yarn 100 passes through the yarn break detector 30, the laser beam emitted by the laser emitter is partially blocked by the weft yarn 100. After receiving the laser beam, the photoelectric sensor converts the laser beam into an electrical signal and transmits the electrical signal to the optical coupler. The optical coupler amplifies the electrical signal and transmits the amplified electrical signal to the processor. The processor pre-sets a first electrical signal threshold and a second electrical signal threshold. The second electrical signal threshold is greater than the first electrical signal threshold. When the weft yarn 100 breaks, the obstruction of the laser beam emitted by the laser emitter changes, the laser beam received by the photoelectric sensor increases, and the intensity of the electrical signal also increases. The processor compares the received electrical signal strength with the first electrical signal threshold and the second electrical signal threshold. If the electrical signal strength is greater than the first electrical signal threshold but less than the second electrical signal threshold, it is determined that part of the weft yarn 100 is broken. At this time, an early warning signal is issued to notify the staff to check the weft yarn 100 to check the breakage of the weft yarn 100 and perform the next step of processing according to the breakage of the weft yarn 100; if the electrical signal strength is greater than the second electrical signal threshold, it is determined that all the weft yarn 100 is broken. At this time, a warning signal is issued to notify the staff to stop the machine and check and restore the weft yarn 100; since the size of the laser beam is set larger than the thickness of the weft yarn 100, the laser beam will also enter the photoelectric sensor during normal operation. Therefore, when the electrical signal strength is less than the first electrical signal threshold, it is determined that the weft yarn 100 is intact. In specific applications, the size of the first electrical signal threshold and the second electrical signal threshold can be set and adjusted according to actual conditions.

[0067] The processor also presets a tension threshold value, and the processor is electrically connected to the tension processor. The tension processor transmits the received tension data of the weft yarn 100 to the processor. When the electrical signal strength is greater than the first electrical signal threshold value and less than the second electrical signal threshold value, the processor issues an early warning signal. The processor compares the tension data within a set period of time before the moment of issuing the early warning signal with the tension threshold value. If the tension data within the set period of time does not exceed the tension threshold value, it is determined that the cause of the breakage of the weft yarn 100 is the quality of the weft yarn 100. At this time, the processor issues a weft yarn 100 quality prompt message to remind the staff to check the quality of the weft yarn 100. If there is tension data exceeding the tension threshold within the set time, it is determined that there is a machine failure. At this time, the processor issues a machine failure prompt message to remind the staff to check the machine equipment and shut down the machine if necessary; when the tension of the weft yarn 100 does not change, the breakage of the weft yarn 100 is caused by the quality of the weft yarn 100. When the weft yarn 100 breaks, if the tension on the weft yarn 100 increases, it means that the problem is not the quality of the weft yarn 100, but a failure in the operation of the machine equipment, resulting in excessive instantaneous pulling force on the weft yarn 100, causing the breakage of the weft yarn 100.

[0068] When the processor sends out a warning signal when the electric signal strength reaches the second electric signal threshold, the same principle as the processor sends out an early warning signal, based on the comparison of the tension data transmitted by the tension processor with the tension threshold, it sends out a weft yarn 100 quality prompt information or a machine failure prompt information.

[0069] The set time can be set according to the working state of the loom, the fabric being woven, etc., and can be selected from 3 to 5 seconds.

[0070] The beneficial effects of the above technical solution are: through the laser emitter and the photoelectric sensor, it is determined whether the laser beam passing through the broken yarn detector is blocked, and the electrical signal of the photoelectric sensor is amplified by the optical coupler, thereby increasing the accuracy of determining whether the weft yarn is broken, and judging the cause of the weft yarn breakage according to the different tension changes when the weft yarn breaks, and issuing a prompt message, thereby improving the efficiency of fault handling.

[0071] In one embodiment, a damping material layer is provided on the surface of the damping disc 9 close to the turntable 8 .

[0072] The working principle of the above technical solution is: a damping material layer is provided on the surface of the damping disk 9 close to the turntable 8. The damping material can be selected from butyl rubber, acrylate, polysulfide rubber, nitrile rubber and silicone rubber, polyurethane, polyvinyl chloride or epoxy resin.

[0073] The beneficial effects of the above technical solution are as follows: a damping material layer is provided on the surface where the damping disk contacts the turntable, and resistance is generated on the turntable through the damping material, thereby generating tension on the weft yarn through the yarn tube. The damping material can reduce the vibration between the turntable and the damping material, so that the resistance remains constant, thereby keeping the tension of the weft yarn constant, and no vibration will occur when the tension is adjusted.

[0074] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0075] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0076] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A carbon fiber weft yarn release device with constant tension control, characterized in that: include: A weft storage frame (1), a yarn bobbin (2), a tension detection unit (3) and a tensioner, wherein the yarn bobbin (2) is rotatably arranged on the upper part of the weft storage frame (1) for storing and releasing weft yarn (100); the tension detection unit (3) is arranged on the lower part of the weft storage frame (1) for detecting the tension of the weft yarn (100) during the release process; the tensioner is arranged between the yarn bobbin (2) and the weft storage frame (1); and a tensioner controller (4) adjusts the tension of the tensioner when the yarn bobbin releases the weft yarn (100) according to the change in the tension of the weft yarn (100) detected by the tension detection unit (3).

2. The carbon fiber weft yarn releasing device with constant tension control according to claim 1, characterized in that: The tension detection unit (3) comprises a first connecting plate (5), a tension sensor (6), and a guide wheel (7); the first connecting plate (5) is fixedly connected to the lower part of the weft storage frame (1); the tension sensor (6) is arranged on the first connecting plate (5); and the guide wheel (7) is rotatably connected to the tension sensor (6).

3. The carbon fiber weft yarn releasing device with constant tension control according to claim 2, characterized in that: The tensioner comprises a turntable (8) fixedly connected to the rear end face of the yarn bobbin (2), a damping disc (9) in contact with the end face of the turntable (8) facing away from the yarn bobbin (2), the damping disc (9) being slidably arranged in a cylinder (10), the cylinder (10) being fixedly connected to a second connecting plate (11) on the upper part of the weft storage frame (1), the cylinder (10) being coaxially arranged with the yarn bobbin (2), the turntable (8) and the damping disc (9) being both annular, one end of a spring (12) being fixedly connected to the annular end face of the damping disc (9) facing away from the turntable (8), the other end of the spring (12) being fixedly connected to the end face of the adjusting disc (13) facing the damping disc (9), and the adjusting disc (13) being slidably arranged in the cylinder (10); At least two slide grooves are arranged on the inner wall of the cylinder (10) along the axis of the cylinder. Slide blocks corresponding to the slide grooves are respectively arranged on the outer circumferences of the damping plate (9) and the regulating plate (13). The slide blocks slide in the slide grooves.

4. The carbon fiber weft yarn releasing device with constant tension control according to claim 3, characterized in that: The adjusting disk (13) is symmetrically provided with threaded holes (14); a screw rod (15) is rotatably provided at a position corresponding to the threaded hole (14) on the second connecting plate (11); the screw rod (15) is threadedly connected to the threaded hole (14); one end of the screw rod (15) away from the adjusting disk (13) passes through the second connecting plate (11) and is fixedly connected to a first gear (16); the first gear (16) is meshed with a gear ring (17) rotatably connected to the second connecting plate (11); a second gear (18) is rotatably provided on a side of the second connecting plate (11) away from the adjusting disk (13); and the second gear (18) is meshed with the gear ring (17).

5. The carbon fiber weft yarn releasing device with constant tension control according to claim 4, characterized in that: The anti-jumping unit (19) includes an anti-jumping plate (20), the anti-jumping plate (20) is arranged on the upper part of the weft storage frame (1), the anti-jumping plate (20) and the second connecting plate (11) are arranged at intervals, three groups of anti-jumping wheels (21) are arranged at intervals in the horizontal direction on the anti-jumping plate (20), and a floating wheel group is arranged below the first group and the second group of anti-jumping wheels (21); The floating wheel assembly comprises a horizontal fixed plate (22) arranged in parallel at the upper and lower edges of the anti-jump wire plate (20), two parallel longitudinal rods (23) arranged between the two horizontal fixed plates (22), a floating rod (24) slidingly arranged on the two longitudinal rods (23), and a floating wheel (25) rotatably arranged on the outer circumference of the floating rod (24) between the two longitudinal rods (23).

6. The carbon fiber weft yarn releasing device with constant tension control according to claim 5, characterized in that: Floating springs (26) are respectively sleeved on the upper and lower sides of the floating rod (24) on the longitudinal rod (23), one end of the floating spring (26) is fixedly connected to the floating rod (24), and the other end of the floating spring (26) is fixedly connected to the horizontal fixed plate (22).

7. The carbon fiber weft yarn releasing device with constant tension control according to claim 2, characterized in that: The invention also includes a yarn break detection assembly (27), which includes a detection plate (28) and a yarn break detector (30) arranged in a U-shaped groove (29) on the detection plate (28). The detection plate (28) is arranged on the first connecting plate (5).

8. The carbon fiber weft yarn releasing device with constant tension control according to claim 7, characterized in that: The detection plate (28) is connected to the first connecting plate (5) through a first bolt (31) and a second bolt (32). The first connecting plate (5) is provided with an arc-shaped long hole (33). The second bolt (32) passes through the long hole (33) and is connected to the detection plate (28).

9. The carbon fiber weft yarn releasing device with constant tension control according to claim 8, characterized in that: The yarn break detector (30) comprises a cylindrical detector housing, on the inner wall of which a laser emitter and a photoelectric sensor are arranged opposite to each other, the photoelectric sensor is electrically connected to an optical coupler, and the optical coupler is electrically connected to a processor.

10. The carbon fiber weft yarn releasing device with constant tension control according to claim 3, characterized in that: A damping material layer is provided on the surface of the damping disc (9) close to the rotating disc (8).

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