Yarn feeding device for knitted fabric production

Abstract

The utility model belongs to the technical field of knitted fabric production, and particularly relates to a thread feeding device for knitted fabric production, which comprises a thread feeding frame for knitted fabric production, two rotating shafts are rotatably connected to the inner walls of the front side and the rear side of the thread feeding frame, and a variable-speed thread feeding mechanism is arranged between the thread feeding frame and the two rotating shafts. Three wire guide plates are fixedly connected to the inner walls of the front side and the rear side of the wire feeding frame, and a movable plate is arranged in the wire feeding frame in a sliding mode. The yarn feeding device is reasonable in structural design, the tension degree during yarn feeding can be effectively regulated and controlled, the tension degree of yarn is made to be appropriate, the situation that products woven by knitted fabric are affected due to the fact that the yarn is too loose and the yarn is prone to being snapped due to the fact that the yarn is too tight is avoided, meanwhile, the yarn feeding speed can be regulated and controlled according to the requirement for knitting the knitted fabric, and the using effect of the device is improved; and due to the arrangement of the yarn feeding groove and the rubber ring, a plurality of yarns can be synchronously, stably and smoothly fed, and the situation that the fed yarns slip is avoided.

Description

Technical Field

[0001] This utility model relates to the field of knitted fabric production technology, and in particular to a thread feeding device for knitted fabric production. Background Technology

[0002] Knitwear is clothing made by cutting and knitting knitted fabric. Knitted fabric is knitted by a knitting machine. When the knitting machine is working, the yarn feeding device feeds the yarn from the yarn spool to the knitting machine to be woven into fabric.

[0003] However, existing yarn feeding devices for knitted fabric production have shortcomings. They are not convenient for effectively adjusting the tension of the conveyed yarn, resulting in the yarn being too loose and affecting the quality of the knitted fabric. Furthermore, it is inconvenient to effectively adjust the yarn feeding speed according to the needs of knitting the fabric, thus reducing the effectiveness of use. Therefore, we propose a yarn feeding device for knitted fabric production to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings by providing a thread feeding device for knitted fabric production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A yarn feeding device for knitted fabric production includes a yarn feeding frame for knitted fabric production. Two rotating shafts are rotatably connected to the inner walls of the front and rear sides of the yarn feeding frame. A speed-changing yarn feeding mechanism is provided between the yarn feeding frame and the two rotating shafts. Three guide plates are fixedly connected to the inner walls of the front and rear sides of the yarn feeding frame. A movable plate is slidably arranged inside the yarn feeding frame. One side of the movable plate and the guide plates are provided with guide holes for guiding the yarn. A yarn tension adjustment mechanism is provided between the movable plate and the yarn feeding frame. A controller is fixedly connected to the front side of the yarn feeding frame.

[0007] In a preferred embodiment of this invention, the variable speed yarn feeding mechanism includes a reducer fixedly connected to the front side of the yarn feeding frame. The output shaft of the reducer is fixedly connected to the front end of the corresponding rotating shaft. Gears are fixedly connected to the rear ends of both rotating shafts, and the two gears mesh with each other. A yarn feeding roller is fixedly sleeved on the outer side of each rotating shaft. Multiple yarn feeding grooves for feeding yarn are opened on the outer side of the yarn feeding roller. A drive motor is fixedly connected to the front side of the reducer. The output shaft of the drive motor is fixedly connected to the input shaft of the reducer. A frequency converter is fixedly connected to the top of the drive motor.

[0008] As a preferred embodiment of this invention, a rubber ring is fixedly sleeved inside the wire feeding groove.

[0009] As a preferred embodiment of this invention, the diameter of the wire hole is set to be smaller in the middle and larger on both sides.

[0010] In a preferred embodiment of this invention, the yarn tension adjustment mechanism includes a cylinder fixedly connected to the inner wall of the bottom of the yarn feeder. A servo motor is fixedly connected to one side of the cylinder, and a driving bevel gear is fixedly connected to the output shaft of the servo motor. A lifting screw is rotatably connected to the inner wall of the bottom of the cylinder. A driven bevel gear is fixedly sleeved on the outer side of the lifting screw. The driving bevel gear meshes with the driven bevel gear. A lifting column is threaded on the outer side of the lifting screw. A tension sensor is fixedly connected to the top of the lifting column, and a sliding plate is fixedly sleeved on the outer side of the tension sensor.

[0011] As a preferred embodiment of this utility model, the top of the skateboard is fixedly connected to two sleeves, the bottom inner wall of the sleeves is fixedly connected to a spring, the top of the spring is fixedly connected to a disc, the top of the disc is fixedly connected to a support rod, and both support rods are fixedly connected to the bottom of the movable board.

[0012] As a preferred embodiment of this utility model, guide grooves are provided on both inner walls of the cylinder, and guide blocks are slidably fitted in the guide grooves. The two guide blocks are respectively fixedly connected to both sides of the lifting column, and two telescopic rods are fixedly connected between the slide plate and the bottom inner wall of the wire feeder.

[0013] As a preferred embodiment of this invention, the two discs and the support rod are slidably fitted into the corresponding sleeves.

[0014] In this utility model, a yarn feeding device for knitted fabric production is described. According to the needs of knitting fabric, the power of the drive motor is adjusted by the settings of the controller and frequency converter, thereby adjusting the yarn feeding speed. After the drive motor is reduced by the reducer, it drives the rotation of a rotating shaft. Through the meshing transmission of two gears, it drives the two rotating shafts and the yarn feeding rollers to rotate in opposite directions. Multiple yarns can be fed synchronously through multiple yarn feeding grooves on the upper and lower yarn feeding rollers. The rubber ring not only increases the friction between the yarn feeding groove and the yarn, avoiding slippage during yarn feeding and improving the smoothness of yarn feeding, but also has a certain elasticity, which can protect the yarn and prevent breakage during yarn feeding.

[0015] In this utility model, a yarn feeding device for knitted fabric production is described. Based on the required yarn tension, a servo motor drives the rotating shaft of the active bevel gear. The active bevel gear drives the rotation of the driven bevel gear and the lifting screw. The lifting screw causes the lifting column slide plate and the movable plate to move downwards, pulling the yarn and thus adjusting the yarn tension. A tension sensor is installed to measure the yarn tension. When the tension reaches the specified requirement, indicating the appropriate yarn tension, the tension sensor sends a signal to the controller. The controller then shuts off the servo motor, thereby adjusting the yarn tension to ensure it is appropriate. This prevents the yarn from being too loose, which would affect the knitted fabric, or too tight, which would easily break the yarn.

[0016] This utility model has a reasonable structural design, which can effectively control the tension of the yarn during feeding, so that the tension of the yarn is appropriate, avoiding the yarn being too loose, which would affect the knitted fabric products, and too tight, which would easily break the yarn. At the same time, the feeding speed can be adjusted according to the needs of knitting the fabric, improving the use effect of the device. Furthermore, the setting of the feeding groove and rubber ring can feed multiple yarns synchronously and stably and smoothly, avoiding the slippage of the feeding. Attached Figure Description

[0017] Figure 1 This is a first-view perspective perspective view of a thread feeding device for knitted fabric production proposed in this utility model.

[0018] Figure 2 This is a second-view perspective perspective view of a thread feeding device for knitted fabric production proposed in this utility model.

[0019] Figure 3 This is a cross-sectional view of a yarn tension adjustment mechanism for a yarn feeding device used in the production of knitted fabrics, as proposed in this utility model.

[0020] Figure 4 This is a cross-sectional view of two feed rollers of a thread feeding device for knitted fabric production proposed in this utility model.

[0021] In the diagram: 1. Wire feeder; 2. Controller; 3. Guide plate; 4. Movable plate; 5. Guide hole; 6. Yarn tension adjustment mechanism; 7. Variable speed wire feeding mechanism; 601. Cylinder; 602. Lifting column; 603. Slide plate; 604. Telescopic rod; 605. Servo motor; 606. Sleeve; 607. Driving bevel gear; 608. Driven bevel gear; 609. Lifting screw; 610. Guide block; 611. Guide groove; 612. Tension sensor; 613. Spring; 614. Disc; 615. Support rod; 71. Drive motor; 72. Frequency converter; 73. Reducer; 74. Shaft; 75. Wire feed roller; 76. Wire feed groove; 77. Gear; 78. Rubber ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 A yarn feeding device for knitted fabric production includes a yarn feeding frame 1 for knitted fabric production. Two rotating shafts 74 are rotatably connected to the inner walls of the front and rear sides of the yarn feeding frame 1. A speed-changing yarn feeding mechanism 7 is provided between the yarn feeding frame 1 and the two rotating shafts 74. Three guide plates 3 are fixedly connected to the inner walls of the front and rear sides of the yarn feeding frame 1. A movable plate 4 is slidably arranged inside the yarn feeding frame 1. A guide hole 5 for guiding the yarn is opened on one side of both the movable plate 4 and the guide plate 3. A yarn tension adjustment mechanism 6 is provided between the movable plate 4 and the yarn feeding frame 1. A controller 2 is fixedly connected to the front side of the yarn feeding frame 1.

[0024] For details, please refer to Figure 1 , Figure 2 and Figure 4 As shown, the variable speed yarn feeding mechanism 7 includes a reducer 73 fixedly connected to the front side of the yarn feeding frame 1. The output shaft of the reducer 73 is fixedly connected to the front end of the corresponding rotating shaft 74. Gears 77 are fixedly connected to the rear ends of both rotating shafts 74, and the two gears 77 mesh with each other. Yarn feeding rollers 75 are fixedly sleeved on the outer side of both rotating shafts 74. Multiple yarn feeding grooves 76 for feeding yarn are opened on the outer side of the yarn feeding rollers 75. A drive motor 71 is fixedly connected to the front side of the reducer 73. The output shaft of the drive motor 71 is fixedly connected to the input shaft of the reducer 73. A frequency converter 72 is fixedly connected to the top of the drive motor 71. A rubber ring 78 is fixedly sleeved inside the yarn feeding groove 76. The diameter of the wire hole 5 is set to be smaller in the middle and larger on both sides.

[0025] The above scheme is adopted: by setting the controller 2 and the frequency converter 72, the power delivered by the drive motor 71 is regulated, thereby regulating the speed of yarn feeding. After being reduced by the reducer 73, the drive motor 71 drives the rotation of a rotating shaft 74. Through the meshing transmission of two gears 77, the two rotating shafts 74 and the yarn feeding rollers 75 are driven to rotate in opposite directions. Through the multiple yarn feeding grooves 76 on the upper and lower yarn feeding rollers 75, multiple yarns can be fed synchronously. The rubber ring 78 not only increases the friction between the yarn feeding groove 76 and the yarn, avoiding slippage during yarn feeding and improving the smoothness of yarn feeding, but also has a certain elasticity, which can protect the yarn and prevent breakage during yarn feeding.

[0026] For details, please refer to Figure 1-3As shown, the yarn tension adjustment mechanism 6 includes a cylinder 601 fixedly connected to the inner wall of the bottom of the yarn feeder 1. A servo motor 605 is fixedly connected to one side of the cylinder 601. An active bevel gear 607 is fixedly connected to the output shaft of the servo motor 605. A lifting screw 609 is rotatably connected to the inner wall of the bottom of the cylinder 601. A driven bevel gear 608 is fixedly sleeved on the outer side of the lifting screw 609. The active bevel gear 607 meshes with the driven bevel gear 608. A lifting column 602 is threaded on the outer side of the lifting screw 609. A tension sensor 612 is fixedly connected to the top of the lifting column 602. A sliding plate 603 is fixedly sleeved on the outer side of the tension sensor 612.

[0027] The above scheme is adopted as follows: According to the required yarn tension, the servo motor 605 is started. The servo motor 605 drives the shaft of the active bevel gear 607, which in turn drives the driven bevel gear 608 and the lifting screw 609 to rotate. The lifting screw 609 drives the lifting column 602, the sliding plate 603 and the movable plate 4 to move downward, thus pulling the yarn and adjusting the yarn tension. The tension sensor 612 can measure the tension of the yarn. When the tension reaches the specified requirement, the yarn tension is appropriate. The tension sensor 612 sends a signal to the controller 2, which then turns off the servo motor 605. This allows the yarn tension to be adjusted to a suitable level, preventing the yarn from being too loose, which would affect the knitted fabric products, and too tight, which would easily break the yarn.

[0028] Specifically, two sleeves 606 are fixedly connected to the top of the slide plate 603. A spring 613 is fixedly connected to the bottom inner wall of the sleeve 606. A disc 614 is fixedly connected to the top of the spring 613. A support rod 615 is fixedly connected to the top of the disc 614. Both support rods 615 are fixedly connected to the bottom of the movable plate 4. The spring 613 is designed to provide a buffering effect, preventing the yarn from breaking due to excessive instantaneous tension.

[0029] Specifically, guide grooves 611 are provided on both inner walls of the cylinder 601, and guide blocks 610 are slidably fitted in the guide grooves 611. The two guide blocks 610 are fixedly connected to both sides of the lifting column 602. Two telescopic rods 604 are fixedly connected between the slide plate 603 and the bottom inner wall of the wire feeder 1. The two discs 614 and the support rods 615 are slidably fitted in the corresponding sleeves 606, which facilitates the guidance of the lifting column 602, the slide plate 603 and the support rods 615, making their movement more stable and smooth.

[0030] In this invention, during use, the thread is passed through the wire holes 5 on the three guide plates 3 and the movable plate 4, and simultaneously through the thread feeding groove 76 opened in the thread feeding roller 75. It is then fed into the knitting machine for weaving. According to the needs of weaving the knitted fabric, the power delivered by the drive motor 71 is adjusted through the controller 2 and the frequency converter 72, thereby adjusting the thread feeding speed. After being reduced in speed by the reducer 73, the drive motor 71 drives the rotation of a rotating shaft 74. Through the meshing transmission of two gears 77, the two rotating shafts 74 and the thread feeding... The reverse rotation of roller 75 allows multiple yarns to be fed synchronously through multiple feeding grooves 76 on the upper and lower feeding rollers 75. The rubber ring 78 not only increases the friction between the feeding groove 76 and the yarn, preventing slippage and improving the smoothness of the feeding, but also provides elasticity to protect the yarn and prevent breakage during feeding. The guide holes 5 on the guide plate 3 and the movable plate 4 effectively guide and limit the yarn, preventing knotting and tangling.

[0031] According to the required yarn tension, the servo motor 605 is started. The servo motor 605 drives the shaft of the active bevel gear 607, which in turn drives the driven bevel gear 608 and the lifting screw 609 to rotate. The lifting screw 609 drives the lifting column 602, the sliding plate 603, and the movable plate 4 to move downwards, thus pulling the yarn and adjusting the yarn tension. The tension sensor 612 measures the tension of the yarn. When the tension reaches the specified requirement, the yarn tension is appropriate. The tension sensor 612 sends a signal to the controller 2, which then shuts off the servo motor 605. This allows for the adjustment of the yarn tension to ensure it is appropriate, preventing the yarn from being too loose, which would affect the knitted fabric, or too tight, which would easily break the yarn. The spring 613 provides a buffering effect, preventing the yarn from breaking due to excessive instantaneous tension.

Claims

1. A yarn feeding device for the production of knitted fabric, characterized in that, The device includes a yarn feeder (1) for knitted fabric production. Two rotating shafts (74) are rotatably connected to the inner walls of the front and rear sides of the yarn feeder (1). A speed-changing yarn feeding mechanism (7) is provided between the yarn feeder (1) and the two rotating shafts (74). Three guide plates (3) are fixedly connected to the inner walls of the front and rear sides of the yarn feeder (1). A movable plate (4) is slidably arranged inside the yarn feeder (1). A guide hole (5) for guiding the yarn is opened on one side of both the movable plate (4) and the guide plate (3). A yarn tension adjustment mechanism (6) is provided between the movable plate (4) and the yarn feeder (1). A controller (2) is fixedly connected to the front side of the yarn feeder (1).

2. The yarn feeding device for the production of knitted fabric according to claim 1, characterized in that, The variable speed wire feeding mechanism (7) includes a reducer (73) fixedly connected to the front side of the wire feeding frame (1). The output shaft of the reducer (73) is fixedly connected to the front end of the corresponding rotating shaft (74). The rear ends of the two rotating shafts (74) are fixedly connected to gears (77). The two gears (77) mesh with each other. The outer sides of the two rotating shafts (74) are fixedly fitted with wire feeding rollers (75). The outer sides of the wire feeding rollers (75) are provided with multiple wire feeding grooves (76) for feeding yarn. The front side of the reducer (73) is fixedly connected to a drive motor (71). The output shaft of the drive motor (71) is fixedly connected to the input shaft of the reducer (73). The top of the drive motor (71) is fixedly connected to a frequency converter (72).

3. The yarn feeding device for the production of knitted fabric according to claim 2, characterized in that, A rubber ring (78) is fixedly sleeved inside the wire feeding groove (76).

4. The yarn feeding device for the production of knitted fabric according to claim 1, characterized in that, The diameter of the wire hole (5) is set to be smaller in the middle and larger on both sides.

5. The yarn feeding device for the production of knitted fabric according to claim 1, characterized in that, The yarn tension adjustment mechanism (6) includes a cylinder (601) fixedly connected to the inner wall of the bottom of the yarn feeder (1). A servo motor (605) is fixedly connected to one side of the cylinder (601). An active bevel gear (607) is fixedly connected to the output shaft of the servo motor (605). A lifting screw (609) is rotatably connected to the inner wall of the bottom of the cylinder (601). A driven bevel gear (608) is fixedly sleeved on the outer side of the lifting screw (609). The active bevel gear (607) meshes with the driven bevel gear (608). A lifting column (602) is threaded on the outer side of the lifting screw (609). A tension sensor (612) is fixedly connected to the top of the lifting column (602). A sliding plate (603) is fixedly sleeved on the outer side of the tension sensor (612).

6. The yarn feeding device for the production of knitted fabric according to claim 5, characterized in that, The top of the slide plate (603) is fixedly connected to two sleeves (606), and a spring (613) is fixedly connected to the bottom inner wall of the sleeve (606). A disc (614) is fixedly connected to the top of the spring (613), and a support rod (615) is fixedly connected to the top of the disc (614). Both support rods (615) are fixedly connected to the bottom of the movable plate (4).

7. The yarn feeding device for the production of knitted fabric according to claim 5, characterized in that, Guide grooves (611) are provided on both sides of the inner wall of the cylinder (601). Guide blocks (610) are slidably sleeved in the guide grooves (611). The two guide blocks (610) are fixedly connected to both sides of the lifting column (602). Two telescopic rods (604) are fixedly connected between the slide plate (603) and the bottom inner wall of the wire feeder (1).

8. The yarn feeding device for the production of knitted fabric according to claim 6, characterized in that, Two discs (614) and a support rod (615) are slidably fitted into the corresponding sleeves (606).

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