Speed adjustable yarn feeder

Abstract

The utility model relates to the technical field of yarn feeder, disclose a adjustable speed yarn feeder, including transmission case, the side installation of transmission case has the parallel setting first yarn feeder roller and second yarn feeder roller, is located the left side setting of first yarn feeder roller has first anti - knot rod, is located the end part mounting of first yarn feeder roller and second yarn feeder roller outer end plate, is located the left side setting of second yarn feeder roller has second anti - knot rod, is located the right upper side setting of second yarn feeder roller has first yarn rod, its right lower side sets up second yarn rod, the transmission case is provided with yarn rod adjusting device in, second yarn rod installs on yarn rod adjusting device, the side of transmission case is close to second yarn feeder roller and is provided with movable opening, the utility model discloses through yarn rod adjusting device to adjust the position of yarn rod to the yarn line package angle of convenient adjustment.

Description

Technical Field

[0001] This utility model relates to the field of yarn feeder technology, and in particular to an adjustable speed yarn feeder. Background Technology

[0002] The yarn feeder of a computerized flat knitting machine is installed on the machine and is used to deliver the yarn from the take-up plate at the top of the machine frame to the flat knitting machine. This type of yarn feeder generally consists of a drive motor, transmission box, yarn feed roller, and yarn guide rod. Different production processes require different yarns, thus requiring different yarn feed rates. Since the yarn wrap angle affects the feed rate, the yarn feed rate is usually adjusted by adjusting the position of the yarn guide rod. Traditionally, different mounting holes for the yarn guide rod are set on the transmission box, requiring the yarn guide rod to be removed and installed in the corresponding holes, which is inconvenient and the adjustment position is fixed. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an adjustable speed yarn feeder to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: An adjustable speed yarn feeder includes a transmission box. A first yarn feed roller and a second yarn feed roller are mounted in parallel on one side of the transmission box. A yarn feed drive motor, which is an adjustable speed single-phase AC motor, is fixed to the rear of the transmission box to drive the first and second yarn feed rollers to rotate. The outer diameter of the first and second yarn feed rollers is 55mm-65mm. A first anti-knotting rod is located to the left of the first yarn feed roller. Outer end plates are installed at the ends of the first and second yarn feed rollers. A second anti-knotting rod is located to the left of the second yarn feed roller. A first yarn guide rod is located above the right of the second yarn feed roller, and a second yarn guide rod is located below its right. A yarn guide rod adjustment device is provided inside the transmission box, and the second yarn guide rod is mounted on the yarn guide rod adjustment device. A movable opening is provided on the side of the transmission box near the second yarn feed roller.

[0005] Furthermore, the yarn guide rod adjustment device includes a movable frame, a partition wall on one side of the movable frame, an adjustment drive motor on one side of the partition wall, a threaded rod rotatably connected to the partition wall and the movable frame, the threaded rod being connected to the adjustment drive motor, a slider threadedly connected to the threaded rod, one end of the second yarn guide rod being fixed to the slider, guide blocks being provided at the top and bottom of the slider, the guide blocks being adapted to slide in a guide groove provided on the side wall of the fixed frame; the movable frame is fixed inside the transmission box or is provided with a longitudinal moving device inside the transmission box.

[0006] Furthermore, the yarn guide bar includes a yarn guide bar body, which is provided with a plurality of threading holes, and a fixing rod is provided at the inner end of the yarn guide bar body, which is fixed to the slider.

[0007] Furthermore, the longitudinal moving device includes two parallel and spaced fixed seats disposed inside the transmission box. The inner sidewalls of the two fixed seats are respectively provided with slide bars. The movable frame is disposed between the two fixed seats. The two sidewalls of the movable frame are respectively provided with slide grooves that are adapted to and slidably connected to the slide bars. A rack is vertically disposed at the bottom of the movable frame. A gear is disposed on one side of the rack. The shaft of the gear is connected to the output shaft of the longitudinal drive motor fixed at the rear side of the transmission box. The gear meshes with the rack.

[0008] Furthermore, the first and second yarn feeding rollers have the same structure, both including a roller shaft. A roller cylinder is sleeved on the outside of the roller shaft. The outer end of the roller cylinder is rotatably connected to the roller shaft through a second bearing. A transmission end is provided at the inner end of the roller cylinder. The transmission end is provided with multiple parallel belt grooves. The transmission end is rotatably connected to the roller shaft through a first bearing.

[0009] Furthermore, the outer end of the roller is provided with a fixing screw hole, and the fixing screw passes through the outer end plate and is locked in the fixing screw hole.

[0010] Furthermore, the motor shaft of the yarn feeding drive motor passes through the inside of the transmission box and is fixed with a pulley. A belt is sleeved on the outside of the pulley, the transmission end of the first yarn feeding roller, and the transmission end of the second yarn feeding roller.

[0011] Furthermore, the outer end plate includes two circular sub-plates, a crossbeam is provided between the tops of the two sub-plates, a first notch with a fan-shaped structure is provided below the sub-plates, and a second notch with a U-shaped structure is provided at the top of the crossbeam. Beneficial effects

[0012] Compared with the prior art, the present invention has at least the following advantages: This utility model's lateral displacement device adjusts the position of the second yarn feeder by adjusting the operation of the drive motor, which drives the threaded rod to rotate, causing the slider to rotate and move laterally. The guide block and guide groove cooperate to guide the movement of the slider. The longitudinal movement device, driven by the longitudinal drive motor, rotates the gear, causing the rack to move up and down, and the movable frame to move up and down along the protrusion of the fixed seat, thus moving the entire lateral displacement device up and down to adjust the longitudinal position of the second yarn feeder. The lateral and longitudinal movement devices facilitate convenient position adjustment of the second yarn feeder with high precision and efficient operation, eliminating the need for manual operation. The adjustment range is flexible and not limited by the number and spacing of fixing screw holes in existing technologies. The yarn feeding drive motor is an adjustable speed motor, adaptable to the yarn feeding speed requirements of different yarns and processes. The 55-65mm outer diameter roller increases the yarn feeding amount. The combination of these two features solves the problems of poor process adaptability and insufficient yarn feeding in existing yarn feeders. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the yarn feeder of this utility model.

[0014] Figure 2 This is a front view structural diagram of the yarn feeder of this utility model.

[0015] Figure 3 This is a front view schematic diagram of the internal structure of the yarn feeder of this utility model.

[0016] Figure 4 This is a schematic diagram of the yarn feeding roller and motor of this utility model.

[0017] Figure 5 This is a cross-sectional view of the yarn feeding roller of this utility model.

[0018] Figure 6 This diagram shows the positional connection between the yarn feeding roller conveying end and the transmission box of this utility model.

[0019] Figure 7 This is a schematic diagram of the structure of the yarn guide bar adjustment device of this utility model.

[0020] Figure 8 This utility model Figure 6 A schematic diagram of the rear view structure.

[0021] Figure 9 This is a schematic diagram of the connection structure between the second yarn guide rod and the slider of this utility model.

[0022] The diagram is labeled as follows: 1-Transmission box; 2-Yarn feeding drive motor; 3-First yarn feeding roller; 4-First anti-knotting rod; 5-Second anti-knotting rod; 6-Outer end plate; 60-First sub-plate; 61-Second sub-plate; 63-Second notch; 64-First notch; 7-First yarn guide rod; 8-Second yarn guide rod; 80-Fixing rod; 81-Yarn guide rod body; 82-Threading hole; 9-Yarn guide rod adjusting device; 90-Modible frame; 901-Separation wall; 9 02-Guide groove; 903-Slide groove; 91-Pink rack; 92-Fixed seat; 920-Slide bar; 93-Gear; 94-Threaded rod; 95-Slider; 96-Guide block; 97-Adjusting drive motor; 10-Second yarn feeding roller; 11-Roller shaft; 12-Roller; 13-First bearing; 14-Fixing screw hole; 15-Second bearing; 16-Fixing screw; 17-Transmission end; 170-Belt groove; 18-Modible opening. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, a detailed description is provided below in conjunction with the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] See Figures 1-9This embodiment provides an adjustable speed yarn feeder, including a transmission box 1. A first yarn feed roller 3 and a second yarn feed roller 10 are mounted in parallel on one side of the transmission box 1. The outer diameter of the first and second yarn feed rollers is 55mm-65mm. A yarn feed drive motor, an adjustable speed single-phase AC motor, is fixed to the rear of the transmission box to drive the first and second yarn feed rollers to rotate. A first anti-knotting rod 4 is located to the left of the first yarn feed roller 3. An outer end plate 6 is installed at the ends of the first yarn feed roller 3 and the second yarn feed roller 10. A second anti-knotting rod 5 is located to the left of the second yarn feed roller 10 and to the right of the first yarn feed roller 3. A first yarn guide rod 7 is located above the right of the second yarn feed roller 10, and a second yarn guide rod 8 is located below its right. A yarn guide rod adjustment device 9 is provided inside the transmission box 1, and the second yarn guide rod 8 is mounted on the yarn guide rod adjustment device 9. A movable opening 10 is provided on the side of the transmission box 1 closest to the second yarn feed roller 10.

[0027] In this utility model, the yarn guide rod adjusting device 9 includes a lateral displacement device, which includes a movable frame 90. A partition wall 901 is provided on one side of the movable frame, and an adjusting drive motor 97 is provided on one side of the partition wall 901. The adjusting drive motor 97 is fixed to the movable frame 90. A threaded rod 94 is rotatably connected to the partition wall 901 and the movable frame. One end of the threaded rod 94 is connected to the motor shaft of the adjusting drive motor 97. A slider 95 is threadedly connected to the threaded rod 94. One end of the second yarn guide rod 8 is fixed to the slider 95. Guide blocks 96 are provided at the top and bottom of the slider 80, and the guide blocks 96 are adapted to slide and connect with the guide groove 902 provided on the side wall of the fixed frame 90. When the adjusting drive motor 97 operates, it drives the threaded rod 94 to rotate, and the slider 95 rotates accordingly to move laterally. The cooperation between the guide blocks and the guide groove guides the movement of the slider 95.

[0028] The second yarn guide bar includes a yarn guide bar body 81, which is provided with a plurality of threading holes 82. A fixing rod 80 is provided at the inner end of the yarn guide bar body 81, and the fixing rod 80 is fixed on the slider 95.

[0029] In this embodiment, the movable frame 90 is mounted on a longitudinal moving device within the transmission box 1, enabling adjustment of the lateral and longitudinal positions of the second yarn guide rod 8. The longitudinal moving device includes two parallel, spaced-apart fixed seats 92 located inside the transmission box 1. The fixed seats 92 are fixed within the transmission box 1, and their inner sidewalls are provided with protruding slide bars 920. The movable frame 90 is positioned between the two fixed seats 92. Each of the two sidewalls of the movable frame 90 has a sliding groove 903 that is adapted to and slidably connected to the slide bars 920. A rack 91 is vertically mounted at the bottom of the movable frame 90, and one side of the rack 91 is connected to the bottom of the movable frame 90 via a triangular reinforcing plate. A gear 93 is located on one side of the rack 91, and the shaft of the gear 93 is connected to the output shaft of a longitudinal drive motor fixed to the rear of the transmission box 1. The gear 93 meshes with the rack 91. The longitudinal drive motor operates, causing the gear 93 to rotate and drive the rack 91 to move up or down. The movable frame 90 moves up or down relative to the fixed seat, thereby adjusting the longitudinal position of the second yarn guide bar 8.

[0030] In other embodiments, the transmission box is not equipped with a longitudinal moving device, but the movable frame 90 is fixed in the transmission box 1, so that the second yarn guide rod 8 can only be adjusted in the lateral position.

[0031] In this utility model's technical solution, the first yarn feeding roller 3 and the second yarn feeding roller 10 have the same structure, both including a roller shaft 11 fixed on the transmission box 1. A roller 12 is sleeved on the outer side of the roller shaft 11, and the outer end of the roller 12 is rotatably connected to the roller shaft 11 through a second bearing 15. A transmission end 17 is provided at the inner end of the roller 12, and the transmission end 17 is provided with multiple parallel belt grooves 170. The transmission end 17 is rotatably connected to the roller shaft 11 through a first bearing 13. Figure 6 As shown, the drive ends 11 of the first yarn feeding roller 3 and the second yarn feeding roller 10 are located inside the transmission box 1.

[0032] The outer end plate 6 includes two circular sub-plates, namely a first sub-plate 60 and a second sub-plate 61. A crossbeam is provided between the tops of the two sub-plates. A first notch 64 with a fan-shaped structure is provided below the sub-plates, and a second notch 63 with a U-shaped structure is provided at the top of the crossbeam. The outer end of the second anti-knotting rod 5 is located at the second notch 63. The outer end of the roller shaft 30 is provided with a fixing screw hole 14. A fixing screw 16 passes through the top of the first notch 64 of the outer end plate 6 and is threaded into the fixing screw hole 14, locking it in the fixing screw hole 14 and fixing the outer end plate 6 to the ends of the first yarn feeding roller 3 and the second yarn feeding roller 10.

[0033] In this utility model, a yarn feeding drive motor 2 is fixed to the rear side of the transmission box 1. The motor shaft of the yarn feeding drive motor 2 passes through the inside of the transmission box 1 and is fixed with a pulley 11. A belt is sleeved on the outside of the pulley 11, the transmission end 17 of the first yarn feeding roller 3, and the transmission end 17 of the second yarn feeding roller 10. The rotation of the yarn feeding drive motor 2 drives the pulley 11 to rotate, and the pulley 11 drives the first yarn feeding roller 3 and the second yarn feeding roller 10 to rotate via the belt.

[0034] This invention connects the longitudinal drive motor and the adjusting drive motor 97 to a controller. The controller controls the current and voltage parameters of the two motors to achieve precise motor drive, thereby controlling the movement of the second yarn guide rod 8. The controller is electrically connected to the yarn feeding drive motor 2 to adjust the motor speed, solving the technical problem in existing technologies where the fixed motor speed prevents adjustment of the yarn feeding speed according to different knitting processes (such as yarn thickness and weaving density). The controller's control of the motor is existing technology and will not be elaborated here. The outer diameter of the first yarn feeding roller 3 and the second yarn feeding roller 10 is selected between 55-65mm, which is larger than the traditional outer diameter of 40mm. At the same speed, the yarn feeding amount is increased. For example, in this embodiment, the outer diameter of the first yarn feeding roller 3 and the second yarn feeding roller 10 is 60mm. According to the calculation formula: yarn feeding amount ∝ roller circumference × speed, where roller circumference = π × roller outer diameter, the yarn feeding amount can be increased by 50%, avoiding yarn tension fluctuations caused by insufficient yarn feeding and ensuring the uniformity of fabric weaving.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An adjustable speed yarn feeder, characterized in that, The device includes a transmission box, on one side of which a first yarn feeding roller and a second yarn feeding roller are mounted in parallel. A yarn feeding drive motor, which is an adjustable-speed single-phase AC motor, is fixed to the rear of the transmission box to drive the first and second yarn feeding rollers to rotate. The outer diameter of the first and second yarn feeding rollers is 55mm-65mm. A first anti-knotting rod is located to the left of the first yarn feeding roller. An outer end plate is installed at the ends of the first and second yarn feeding rollers. A second anti-knotting rod is located to the left of the second yarn feeding roller. A first yarn guide rod is located to the upper right of the second yarn feeding roller, and a second yarn guide rod is located to its lower right. A yarn guide rod adjustment device is provided inside the transmission box, and the second yarn guide rod is mounted on the yarn guide rod adjustment device. A movable opening is provided on the side of the transmission box near the second yarn feeding roller.

2. The adjustable speed yarn feeder according to claim 1, characterized in that, The yarn guide rod adjustment device includes a movable frame, a partition wall on one side of the movable frame, an adjustment drive motor on one side of the partition wall, a threaded rod rotatably connected to the partition wall and the movable frame, the threaded rod being connected to the adjustment drive motor, a slider threadedly connected to the threaded rod, one end of the second yarn guide rod being fixed to the slider, guide blocks being provided at the top and bottom of the slider, the guide blocks being adapted to slide in a guide groove provided on the side wall of the fixed frame; the movable frame is fixed inside a transmission box or is provided with a longitudinal moving device inside the transmission box.

3. The adjustable speed yarn feeder according to claim 2, characterized in that, The yarn guide bar includes a yarn guide bar body, which has multiple threading holes. A fixing rod is provided at the inner end of the yarn guide bar body, and the fixing rod is fixed to the slider.

4. The adjustable speed yarn feeder according to claim 2, characterized in that, The longitudinal moving device includes two parallel and spaced fixed seats disposed inside the transmission box. The inner sidewalls of the two fixed seats are respectively provided with slide bars. The movable frame is disposed between the two fixed seats. The two sidewalls of the movable frame are respectively provided with slide grooves that are adapted to and slidably connected to the slide bars. A rack is vertically disposed at the bottom of the movable frame. A gear is disposed on one side of the rack. The shaft of the gear is connected to the output shaft of the longitudinal drive motor fixed at the rear of the transmission box. The gear meshes with the rack.

5. The adjustable speed yarn feeder according to claim 1, characterized in that, The first and second yarn feeding rollers have the same structure, both including a roller shaft. A roller cylinder is sleeved on the outside of the roller shaft. The outer end of the roller cylinder is rotatably connected to the roller shaft through a second bearing. A transmission end is provided at the inner end of the roller cylinder. The transmission end is provided with multiple parallel belt grooves. The transmission end is rotatably connected to the roller shaft through a first bearing.

6. The adjustable speed yarn feeder according to claim 5, characterized in that, The outer end of the roller is provided with a fixing screw hole, and the fixing screw passes through the outer end plate and is locked in the fixing screw hole.

7. The adjustable speed yarn feeder according to claim 5, characterized in that, The motor shaft of the yarn feeding drive motor passes through the inside of the transmission box and is fixed with a pulley. A belt is sleeved on the outside of the pulley, the transmission end of the first yarn feeding roller and the transmission end of the second yarn feeding roller.

8. The adjustable speed yarn feeder according to claim 1, characterized in that, The outer end plate includes two circular sub-plates, a crossbeam is provided between the tops of the two sub-plates, a first fan-shaped notch is provided below the sub-plates, and a second U-shaped notch is provided at the top of the crossbeam.

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