Yarn conveying device

Abstract

The utility model discloses a yarn conveyor, which belongs to the technical field of textile and comprises a base plate and a tensioner, and a yarn outlet is arranged on the base plate. The tensioner is arranged on the base plate and comprises a yarn conveying wheel, a swing rod, an encoder, a driving motor and a PLC, and the yarn conveying wheel is rotationally arranged on the base plate and used for conveying yarn; the middle of the swing rod is rotationally connected with the base plate, and first yarn guide rollers are arranged at the two ends of the swing rod and protrude in the direction perpendicular to the rotating face of the swing rod. The encoder is connected with the swing rod and is used for measuring the rotation swing angle of the swing rod; the driving motor is connected with the yarn conveying wheel and drives the yarn conveying wheel to rotate; the PLC is connected with the encoder and the driving motor, and the PLC controls the rotating speed of the driving motor according to the rotating swing angle of the swing rod, so that the swing rod is located at the set position. The yarn conveyor can control the yarn conveying speed in real time, so that the yarn conveying speed and the yarn using speed can keep dynamic balance, and yarn breakage is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of textiles, in particular to a yarn feeder. Background Art

[0002] The yarn tensioner for knitting machines is a textile accessory that feeds yarn to knitting machines. It maintains constant yarn tension during the yarn feeding process, preventing yarn breakage due to uneven force. As an important accessory in textile machinery, the yarn feeder is gaining increasing attention.

[0003] Because there are tension differences in the yarn delivery process, and whether the yarn tension control is stable directly affects the efficiency of textile production and the quality of textile products, this requires the yarn delivery device to control the speed of the delivered yarn so that the yarn output speed and the yarn consumption speed can be kept matched. Moreover, as the yarn is used, the diameter of the yarn ball will also change, thereby affecting the yarn output speed. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a yarn feeder that can control the yarn feeding speed in real time so that the yarn feeding speed and the yarn using speed can maintain a dynamic balance to prevent yarn breakage.

[0005] According to the embodiment of the utility model, the yarn feeder includes a base plate and a tensioner, and the base plate is provided with a yarn outlet; the tensioner is arranged on the base plate, and the tensioner includes a yarn feed wheel, a rocker arm, an encoder, a drive motor and a PLC controller, and the yarn feed wheel is rotatably arranged on the base plate for conveying yarn; the middle part of the rocker arm is rotatably connected to the base plate, and both ends of the rocker arm are provided with a first yarn guide roller, and the first yarn guide roller is protruded along a direction perpendicular to the rotation surface of the rocker arm; the encoder is connected to the rocker arm for measuring the swing angle of the rocker arm; the drive motor is connected to the yarn feed wheel to drive the yarn feed wheel to rotate; the PLC controller is connected to the encoder and the drive motor, and the PLC controller controls the rotation speed of the drive motor according to the swing angle of the rocker arm, so that the rocker arm is in a set position.

[0006] According to the yarn feeder of the embodiment of the utility model, by being configured in this way, at least the following beneficial effects can be achieved: the yarn is Z-shaped and passes through the two first yarn guide rollers of the swing arm and then out of the yarn outlet for use by the yarn-consuming machine. When the yarn feeding speed of the tensioner matches the yarn consumption speed, the swing arm is in a set position. When the yarn feeding speed of the yarn feeder is greater than or less than the yarn feeding speed, the swing arm rotates clockwise or counterclockwise, and the swing angle of the swing arm is measured by an encoder. The PLC controller determines the difference between the yarn consumption speed and the yarn discharge speed based on the swing angle measured by the encoder, and then adjusts the speed at which the drive motor drives the yarn feeder to rotate, thereby dynamically matching the yarn consumption speed of the tensioner and the yarn discharge speed, thereby preventing yarn breakage.

[0007] According to some embodiments of the present invention, the yarn outlet, the rocker arm and the yarn feed wheel are located on one side of the base plate, and the encoder, the drive motor and the PLC controller are located on the other side of the base plate.

[0008] According to some embodiments of the present invention, a plurality of tensioners are provided on the substrate.

[0009] According to some embodiments of the present invention, a first gear and a second gear are further included, wherein the first gear is connected to the rotation point of the pendulum rod and rotates synchronously with the pendulum rod; the second gear is meshed with the first gear, and the number of teeth of the first gear is greater than the number of teeth of the second gear. The encoder is connected to the second gear to measure the rotation angle of the second gear.

[0010] According to some embodiments of the present invention, the first yarn guide rollers at both ends of the swing rod are at the same distance from the rotation point of the swing rod.

[0011] According to some embodiments of the present invention, a second yarn guide roller is further included, and the second yarn guide roller is arranged between the yarn delivery wheel and the rocker arm.

[0012] According to some embodiments of the present invention, the height of the second yarn guide roller is the same as the height of the first yarn guide roller when it is at the lowest point, and the height of the yarn outlet is the same as the height of the first yarn guide roller when it is at the highest point.

[0013] According to some embodiments of the present invention, a cylinder and a piston are further included, wherein the cylinder is connected to the piston, and the piston rod of the piston is connected to the side surface of one end of the rocker arm, and the piston rod applies a certain force to the rocker arm to tension the yarn.

[0014] According to some embodiments of the present invention, a plurality of pistons and tensioners are provided, each tensioner is provided with a piston, and the cylinder is connected to the plurality of pistons.

[0015] According to some embodiments of the present invention, an air filter is further included, and the air filter is arranged at the air inlet of the cylinder.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 This is a front structural diagram of a yarn feeder according to an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the back structure of the yarn feeder according to an embodiment of the present utility model;

[0020] Figure 3 This is a structural schematic diagram of a tensioner according to an embodiment of the present utility model when it is in a first position;

[0021] Figure 4 It is a structural schematic diagram of the tensioner according to an embodiment of the present utility model when it is in the second position.

[0022] Reference numerals:

[0023] The yarn feeding wheel 110, the fixed roller 120, the rocker arm 200, the first yarn guide roller 210, the encoder 300, the drive motor 400, the first gear 510, the second gear 520, the second yarn guide roller 600, the cylinder 710, the piston 720, the piston rod 721, the base plate 800, the yarn outlet 810, and the yarn 900. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0026] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference below Figures 1 to 4 The yarn feeder according to the embodiment of the present invention will be described.

[0029] According to the embodiment of the present invention, the yarn feeder includes a base plate 800 and a tensioner. The base plate 800 is provided with a yarn outlet 810; the tensioner is provided on the base plate 800, and the tensioner includes a yarn feed wheel 110, a rocker 200, an encoder 300, a drive motor 400 and a PLC controller. The yarn feed wheel 110 is rotatably provided on the base plate 800 for feeding the yarn 900; the middle part of the rocker 200 is rotatably connected to the base plate 800, and both ends of the rocker 200 are provided with a first yarn guide roller 2 10. The first yarn guide roller 210 is protruded in a direction perpendicular to the rotation plane of the pendulum rod 200; the encoder 300 is connected to the pendulum rod 200 and is used to measure the swing angle of the pendulum rod 200; the drive motor 400 is connected to the yarn feed wheel 110 to drive the yarn feed wheel 110 to rotate; the PLC controller is connected to the encoder 300 and the drive motor 400, and the PLC controller controls the rotation speed of the drive motor 400 according to the swing angle of the pendulum rod 200, so that the pendulum rod 200 is in a set position.

[0030] For example Figure 1 As shown, the swing arm 200 is in a vertical position and is rotatably connected to the base plate 800 in the middle, so that the swing arm 200 can rotate relative to the base plate 800. After the yarn 900 comes out of the yarn feeding wheel 110, it is wound around the first yarn guide roller 210 at the lower end of the swing arm 200, and then it is wound around the first yarn guide roller 210 at the upper end of the swing arm 200. After that, it is discharged through the yarn outlet 810 on the base plate 800 and connected to the machine using the yarn. The overall arrangement is Z-shaped.

[0031] When the yarn consumption speed changes, or the diameter of the yarn ball on the yarn wheel becomes smaller and smaller with use, thereby inevitably changing the yarn output speed, the yarn consumption speed and the yarn output speed are difficult to match. At this time, the first guide rollers 210 at both ends of the rocker arm 200 are subjected to unequal forces due to the unequal yarn consumption and yarn output speeds, and thus rotate under the action of the force.

[0032] For example Figure 3 As shown, when the yarn delivery speed of the yarn delivery wheel 110 is greater than the yarn consumption speed, the swing arm 200 rotates clockwise. At this time, the encoder 300 measures the swing angle of the swing arm 200. The PLC controller controls the drive motor 400 to reduce the rotation speed based on the rotation angle of the swing arm 200 measured by the encoder 300, so that the rotation speed of the yarn delivery wheel 110 can be reduced to match the yarn consumption speed. When the yarn delivery speed matches the yarn consumption speed, the swing arm 200 returns to the set position and remains stable.

[0033] For example Figure 4 As shown, when the yarn delivery speed of the yarn delivery wheel 110 is lower than the speed of the yarn being consumed, the swing arm 200 rotates counterclockwise. At this time, the encoder 300 measures the swing angle of the swing arm 200. The PLC controller controls the drive motor 400 to increase the rotation speed based on the rotation angle of the swing arm 200 measured by the encoder 300, so that the rotation speed of the yarn delivery wheel 110 can be increased to match the speed of the yarn being consumed. When the yarn delivery speed matches the speed of the yarn being consumed, the swing arm 200 returns to the set position and remains stable.

[0034] This arrangement allows the yarn feeder to match the yarn feed speed with the yarn consumption speed in various situations, thereby preventing breakage of the yarn 900. Regardless of whether the speed of the yarn being used by the external machine changes or the diameter of the yarn ball on the yarn feed wheel 110 gradually decreases, the yarn feed speed can be matched with the yarn consumption speed, thereby evenly applying force to the yarn 900 and preventing breakage of the yarn 900.

[0035] In some specific embodiments of the present invention, the yarn outlet 810 , the rocker 200 and the yarn feed wheel 110 are located on one side of the base plate 800 , and the encoder 300 , the drive motor 400 and the PLC controller are located on the other side of the base plate 800 .

[0036] For example Figure 1 and Figure 2 As shown, the yarn outlet 810, the swing arm 200, and the yarn feed wheel 110 are located on one side of the base plate 800, while the encoder 300, the drive motor 400, and the PLC controller are located on the other side of the base plate 800. This arrangement allows the yarn 900 to exit the yarn feed wheel 110 directly through the swing arm 200 after passing through the yarn outlet 810, without being interfered with by other components and causing entanglement, which would otherwise hinder the output of the yarn 900.

[0037] The middle portion of the swing arm 200 is rotatably connected to the base plate 800. The encoder 300 is connected to the middle portion of the swing arm 200 on the other side of the base plate 800, making it easier to measure the rotation angle of the swing arm 200. The drive motor 400 is located on the other side of the base plate 800, making it easier to drive the yarn feed wheel 110. The PLC controller and the drive motor 400 are located on the same side, making it easier for the PLC controller to drive the drive motor 400.

[0038] In some specific embodiments of the present invention, a plurality of tensioners are provided on the substrate 800 .

[0039] For example Figure 1 As shown, four tensioners are provided on the base plate 800. Providing multiple tensioners can greatly increase the efficiency of the yarn feeder and can simultaneously supply yarn to multiple yarn-consuming machines. Furthermore, multiple yarn outlets 810 are provided on the base plate 800 to increase the yarn feeding speed. Furthermore, the yarns 900 output from the yarn feed wheel 110 do not interfere with each other, thus preventing the yarns 900 from becoming entangled.

[0040] In some specific embodiments of the present invention, a first gear 510 and a second gear 520 are further included. The first gear 510 is connected to the rotation point of the pendulum rod 200 and rotates synchronously with the pendulum rod 200. The second gear 520 is meshed with the first gear 510. The number of teeth of the first gear 510 is greater than the number of teeth of the second gear 520. The encoder 300 is connected to the second gear 520 to measure the rotation angle of the second gear 520.

[0041] For example Figure 2 As shown, the tensioner also includes a first gear 510 and a second gear 520. The first gear 510 meshes with the second gear 520, wherein the number of teeth on the first gear 510 is greater than the number of teeth on the second gear 520. Therefore, when the first gear 510 and the rocker arm 200 rotate at the same angle, the second gear 520 rotates at a greater angle, allowing the second gear 520 to amplify the angle of rotation of the first gear 510. When the encoder 300 is connected to the second gear 520 and measures the angle of rotation of the second gear 520, a more accurate rotation angle can be obtained, thereby facilitating the PLC controller to adjust and control the speed of the drive motor 400, so that the yarn feeding speed of the yarn feeding wheel 110 can match the speed of the yarn being used.

[0042] In some specific embodiments of the present invention, the first yarn guide rollers 210 at both ends of the swing rod 200 are at the same distance from the rotation point of the swing rod 200 .

[0043] For example Figure 1As shown, the first yarn guide rollers 210 at both ends of the swing rod 200 are at the same distance from the rotation point of the swing rod 200, so that the torque exerted on the swing rod 200 is the same and it is easy to maintain stability.

[0044] In some specific embodiments of the present invention, a second yarn guide roller 600 is further included. The second yarn guide roller 600 is disposed between the yarn delivery wheel 110 and the rocker 200 .

[0045] The second yarn guide roller 600 is arranged between the yarn feeding wheel 110 and the rocker 200, so that the direction of the force received by the yarn 900 after the yarn 900 passes through the second yarn guide roller 600 can be adjusted, so that the force received by the yarn 900 can be uniform, preventing the yarn 900 from breaking.

[0046] In some specific embodiments of the present invention, the height of the second guide roller 600 is the same as the height of the first guide roller 210 when it is at the lowest point, and the height of the yarn outlet 810 is the same as the height of the first guide roller 210 when it is at the highest point.

[0047] For example Figure 1 As shown, the height of the second guide roller 600 is the same as the height of the first guide roller 210 when it is at the lowest point, so that the yarn 900 can be transported parallel to the first guide roller 210 after passing through the second guide roller 600, so that when the yarn feeding speed and the yarn using speed are the same, the force exerted on the yarn 900 and the torque received by the rocker arm 200 can be the same, thereby avoiding the rocker arm 200 from rotating incorrectly.

[0048] The height of the second guide roller 600 is the same as the height of the first guide roller 210 when it is at the lowest point, so that the conveying direction of the yarn 900 is not affected by the change in the diameter of the yarn ball. Even when the diameter of the yarn ball gradually decreases, the direction of the yarn 900 can still be conveyed parallel to the first guide roller 210 below the rocker arm 200, so that the direction of the force received by the yarn 900 at both ends of the rocker arm 200 can be consistent.

[0049] The height of the yarn outlet 810 is the same as the height of the first yarn guide roller 210 when it is at the highest point, so that after the yarn 900 passes through the rocker arm 200, it can go out of the yarn outlet 810 in parallel and be used by the yarn-using machine, so that the direction of the force received by the yarn 900 at both ends of the rocker arm 200 can be consistent.

[0050] In some specific embodiments of the present invention, a cylinder 710 and a piston 720 are further included. The cylinder 710 is connected to the piston 720. The piston rod 721 of the piston 720 is connected to the side surface of one end of the rocker 200. The piston rod 721 applies a certain force to the rocker 200 to tighten the yarn 900.

[0051] For example Figure 1 and Figure 2As shown, the apparatus further includes a cylinder 710 and a piston 720. The cylinder 710 is connected to the piston 720. The piston rod 721 of the piston 720 is connected to the side surface of one end of the swing rod 200. The cylinder 710 applies a force to the piston rod 721 of the piston 720, thereby applying a force to the swing rod 200, thereby tightening the yarn 900 and preventing the yarn 900 from breaking. The force applied by the piston rod 721 to the swing rod 200 can be calculated as needed. The cylinder 710 pneumatically pushes the piston rod 721 of the piston 720 to apply a certain force to the swing rod 200.

[0052] Furthermore, the piston rod 721 is connected to the side surface of the top end of the rocker 200. Figure 1 As shown, the piston rod 721 is connected to the side of the top of the swing rod 200, and the piston rod 721 and the yarn feed wheel 110 are located on the same side of the swing rod 200. The piston rod 721 is connected to the top of the swing rod 200 and is above and below the yarn feed wheel 110 to save space. In addition, the piston rod 721 and the yarn output direction of the yarn 900 are located on both sides of the swing rod 200, which can more conveniently provide a certain tension to the yarn 900.

[0053] In some specific embodiments of the present invention, a plurality of pistons 720 and tensioners are provided, each tensioner is provided with a piston 720 , and the cylinder 710 is connected to the plurality of pistons 720 .

[0054] For example Figure 1 As shown, there are multiple tensioners and pistons 720, and each tensioner is provided with a piston 720 and a piston rod 721, for example Figure 2 As shown, a cylinder 710 is connected to multiple pistons 720, respectively, to apply pneumatic force to the multiple pistons 720. The cylinder 710 can use an air diverter valve to apply different forces to the multiple pistons 720, so that the multiple pistons 720 can apply appropriate forces to the swing arm 200 according to the needs of the tensioner.

[0055] In some specific embodiments of the present invention, an air filter is further included, and the air filter is arranged at the air inlet of the cylinder 710.

[0056] An air filter is provided at the air inlet of the cylinder 710 . The air filter allows the cylinder 710 to obtain pure air, thereby increasing the service life of the cylinder 710 and improving the air supply quality of the cylinder 710 to avoid affecting the piston 720 .

[0057] Furthermore, a fixed roller 120 is further included. The fixed roller 120 is fixedly disposed on the base plate 800 , and the yarn feeding wheel 110 is rotatably disposed on the fixed roller 120 .

[0058] For example Figure 1As shown, the yarn feeder also includes a fixed roller 120, which is fixedly arranged on the base plate 800. The yarn feed wheel 110 is rotatably arranged on the fixed roller 120 and can rotate around the fixed roller 120 under the drive of the drive motor 400, thereby outputting the yarn 900 on the yarn feed wheel 110.

[0059] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0060] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A yarn feeder, characterized in that: include: A base plate (800), wherein a yarn outlet (810) is provided on the base plate (800); A tensioner is provided on the substrate (800), comprising a yarn feeding wheel (110), a rocker (200), an encoder (300), a driving motor (400) and a PLC controller; the yarn feeding wheel (110) is rotatably provided on the substrate (800) for feeding yarn (900); the middle portion of the rocker (200) is rotatably connected to the substrate (800); both ends of the rocker (200) are provided with a first yarn guide roller (210); the first yarn guide roller (210) is arranged along a direction perpendicular to the rocker (200); ) is protruded in the direction of the rotating surface of the swing rod (200); the encoder (300) is connected to the swing rod (200) and is used to measure the swing angle of the swing rod (200); the drive motor (400) is connected to the yarn feeding wheel (110) and drives the yarn feeding wheel (110) to rotate; the PLC controller is connected to the encoder (300) and the drive motor (400), and the PLC controller controls the rotation speed of the drive motor (400) according to the swing angle of the swing rod (200), so that the swing rod (200) is in a set position.

2. The yarn feeder according to claim 1, characterized in that: The yarn outlet (810), the rocker (200) and the yarn delivery wheel (110) are located on one side of the base plate (800), and the encoder (300), the drive motor (400) and the PLC controller are located on the other side of the base plate (800).

3. The yarn feeder according to claim 1, characterized in that: A plurality of tensioners are provided on the substrate (800).

4. The yarn feeder according to claim 1, characterized in that: The invention also includes a first gear (510) and a second gear (520), wherein the first gear (510) is connected to the rotation point of the pendulum rod (200) and rotates synchronously with the pendulum rod (200); the second gear (520) is meshed with the first gear (510), and the number of teeth of the first gear (510) is greater than the number of teeth of the second gear (520); the encoder (300) is connected to the second gear (520) and measures the rotation angle of the second gear (520).

5. The yarn feeder according to claim 1, characterized in that: The first yarn guide rollers (210) at both ends of the swing rod (200) are at the same distance from the rotation point of the swing rod (200).

6. The yarn feeder according to claim 1, characterized in that: It also includes a second yarn guide roller (600), which is arranged between the yarn delivery wheel (110) and the rocker (200).

7. The yarn feeder according to claim 6, characterized in that: The height of the second yarn guide roller (600) is the same as the height of the first yarn guide roller (210) when it is at the lowest point, and the height of the yarn outlet (810) is the same as the height of the first yarn guide roller (210) when it is at the highest point.

8. The yarn feeder according to claim 1, characterized in that: It also includes a cylinder (710) and a piston (720), wherein the cylinder (710) is connected to the piston (720), and the piston rod (721) of the piston (720) is connected to the side surface of one end of the rocker (200), and the piston rod (721) applies a certain force to the rocker (200) to tighten the yarn (900).

9. The yarn feeder according to claim 8, characterized in that: There are multiple pistons (720) and tensioners, each tensioner is provided with one piston (720), and the cylinder (710) is connected to the multiple pistons (720).

10. The yarn feeder according to claim 8, characterized in that: An air filter is also included, and the air filter is arranged at the air inlet of the cylinder (710).

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