Tension adjusting mechanism of bobbin winder

Abstract

The utility model discloses a tension adjusting mechanism of a bobbin winder, which comprises a frame, a bobbin for winding is mounted at the upper end of the frame, a bobbin for unwinding is mounted at the lower end of the frame, and a first yarn guide wheel, a second yarn guide wheel, an adjusting yarn wheel, a cylinder and a gravity sensor are mounted on the frame. Yarn is wound on the bobbin sequentially through the first yarn guide wheel, the adjusting yarn wheel and the second yarn guide wheel, the adjusting yarn wheel is movably connected to the rack and connected with the output end of the air cylinder, the gravity sensor is arranged between the first yarn guide wheel and the adjusting yarn wheel, and a yarn guide block abutting against the yarn is installed on the sensing surface of the gravity sensor. The yarn tension adjusting device has the advantages that yarn tension can be adjusted sensitively and timely, the yarn tension can be adjusted accurately, and the yarn tension adjusting device is simple in structure, convenient to operate and high in practicability. The winding effect that the yarn is wound on a bobbin due to the fact that the tension of the yarn is not adjusted in time when the tension of the yarn is adjusted after the yarn is manually observed to be tight or loose is avoided.

Description

Technical Field

[0001] This utility model relates to the field of winding machines, and more specifically, it relates to a tension adjustment mechanism for winding machines. Background Technology

[0002] A winding machine is a textile machine that rewinds raw yarn into packaged yarn. The yarn is usually unwound from a pre-wound yarn source (such as a bobbin). The tension adjustment mechanism of the winding machine maintains the stable tension of the yarn to prevent uneven tension. Then, it is guided to the package maker and begins to be wound onto the packages. During the winding process, the tension adjustment mechanism adjusts the tension of the yarn to ensure that it is wound evenly and stably onto the packages, avoiding slack or tightness, thereby ensuring the quality of the finished yarn wound onto the packages.

[0003] The utility model patent with application number 202022376852.4 discloses a tension adjustment mechanism for a yarn winding machine. When it is necessary to adjust the tension of the yarn, the first motor is started, and the rotating shaft drives the second transmission roller to move downward, thereby pressing the yarn to adjust the tension. Alternatively, the first motor can be reversed, thereby causing the second transmission roller to move upward and loosen the yarn. The adjustment is convenient and the accuracy is also high with the help of the scale. By starting the second motor, the yarn can be further driven, and auxiliary power can be input, which is quite convenient.

[0004] However, in the existing technology, the tension of the yarn is adjusted by controlling the first motor to drive the second transmission roller to move up and down to loosen or tighten the yarn. This is done by manually observing whether the yarn is tight or loose and then controlling the motor to adjust the yarn tension. The yarn tension adjustment is not sensitive or timely enough, which affects the winding effect of the yarn onto the bobbin. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a tension adjustment mechanism for a winding machine.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A tension adjustment mechanism for a winding machine includes a frame, with a bobbin for winding yarn mounted on the upper end of the frame and a yarn tube for unwinding yarn mounted on the lower end of the frame. A first guide wheel, a second guide wheel, an adjusting wheel, a cylinder, and a gravity sensor are mounted on the frame. Yarn is wound onto the bobbin sequentially via the first guide wheel, the adjusting wheel, and the second guide wheel. The adjusting wheel is movably connected to the frame and connected to the output end of the cylinder. The gravity sensor is positioned between the first guide wheel and the adjusting wheel, and a conductor block that contacts the yarn is mounted on the sensing surface of the gravity sensor. The yarn is conveyed to the adjusting wheel via the conductor block. A controller electrically connected to the gravity sensor and the cylinder is mounted on the frame.

[0008] A further configuration is provided, wherein the first yarn guide wheel is provided with a spring, a guide tube and a movable plate, the guide tube is installed on the first yarn guide wheel, one end of the spring is installed inside the guide tube, the other end of the spring extends out of the guide tube and is installed on the movable plate, and the movable plate is arc-shaped and corresponds to the arc-shaped surface of the first yarn guide wheel.

[0009] Further configured, the conductor block is arc-shaped and has a limiting groove, the yarn abuts against the inner wall of the bottom of the limiting groove and moves within the limiting groove to be conveyed to the adjusting yarn wheel.

[0010] A further configuration is provided, wherein a fixed frame is installed at the output end of the cylinder, one side of the adjusting yarn wheel is connected to the fixed frame, a guide groove is opened on the frame, and a shaft corresponding to the frame is installed on the other side of the adjusting yarn wheel. A movable wheel is rotatably connected to the shaft, and the movable wheel rolls in the guide groove.

[0011] A further feature is that the movable plate includes a groove to prevent yarn slippage.

[0012] By adopting the above technical solution, the beneficial effects of this utility model are: to make the yarn tension adjustment sensitive and timely, and to avoid the problem of adjusting the yarn tension after observing the yarn tightness or looseness, which would affect the winding effect of the yarn onto the bobbin. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an embodiment of the present utility model.

[0014] Figure 2 This is a schematic diagram of the structure of the first guide roller and the movable plate.

[0015] Figure 3 This is a schematic diagram of the structure of the yarn guide block and the yarn in operation.

[0016] Figure 4 A schematic diagram of the structure for adjusting the yarn wheel and the fixing frame.

[0017] Figure 5 This is a schematic diagram of the conductor block.

[0018] In the diagram: frame 01, bobbin 02, yarn tube 03, first guide roller 1, second guide roller 2, adjusting roller 3, cylinder 4, gravity sensor 5, wire block 6, spring 7, guide tube 8, movable plate 9, limiting groove 61, fixed frame 10, guide groove 011, shaft 11, moving wheel 12, groove 91. Detailed Implementation

[0019] Reference Figures 1 to 5 The embodiments of this utility model will be further described below.

[0020] A tension adjustment mechanism for a winding machine includes a frame 01. A bobbin 02 for winding is mounted on the upper end of the frame 01, and a yarn tube 03 for unwinding is mounted on the lower end of the frame 01. A first guide roller 1, a second guide roller 2, an adjusting roller 3, a cylinder 4, and a gravity sensor 5 are mounted on the frame 01. The yarn is wound onto the bobbin 02 sequentially through the first guide roller 1, the adjusting roller 3, and the second guide roller 2. The adjusting roller 3 is movably connected to the frame 01 and connected to the output end of the cylinder 4. The gravity sensor 5 is disposed between the first guide roller 1 and the adjusting roller 3, and a conductor block 6 that contacts the yarn is mounted on the sensing surface of the gravity sensor 5. The yarn is conveyed to the adjusting roller 3 through the conductor block 6. A controller electrically connected to the gravity sensor 5 and the cylinder 4 is mounted on the frame 01.

[0021] In use, the yarn is released from the yarn tube 03 and then sequentially passes through the first guide roller 1, the guide block 6, the adjusting roller 3, and the second guide roller 2 before being wound onto the bobbin 02. When the yarn passes the guide block 6, it exerts pressure on the guide block 6. When the gravity sensor 5 detects that the pressure of the yarn on the guide block 6 is greater than a preset value, it indicates that the yarn is too tight. The gravity sensor sends a signal to the controller, which then controls the cylinder 4 to drive the adjusting roller 3 to move closer to the first guide roller 1, thus loosening the yarn. When the gravity sensor 5 detects that the pressure of the yarn on the guide block 6 is less than a preset value, it indicates that the yarn is too loose. The gravity sensor sends a signal to the controller, which then controls the cylinder 4 to drive the adjusting roller 3 to move away from the first guide roller 1, thus tightening the yarn. This allows for timely and sensitive automatic adjustment of the yarn tension based on its tightness, ensuring sensitive and timely yarn tension adjustment. This avoids the problem of manually observing the yarn tightness or looseness before adjusting the tension, which could lead to untimely tension adjustment and affect the winding effect of the yarn onto the bobbin 02.

[0022] The first guide roller 1 is provided with a spring 7, a guide tube 8 and a movable plate 9. The guide tube 8 is installed on the first guide roller 1, and one end of the spring 7 is installed inside the guide tube 8. The other end of the spring 7 extends out of the guide tube 8 and is installed on the movable plate 9. The movable plate 9 is arc-shaped and corresponds to the arc-shaped surface of the first guide roller 1, so that the yarn can be better conveyed to the adjusting roller 3 through the movable plate 9. The movable plate 9 includes a groove 91 to prevent the yarn from slipping.

[0023] When the yarn passes through the first guide roller 1 and the groove 91 on the movable plate 9, the spring 7 is in a compressed state. When the yarn tension changes slightly, the tension of the yarn is adjusted by the small extension and retraction of the spring 7, which further improves the sensitivity of yarn tension adjustment.

[0024] The conductor block 6 is arc-shaped and has a limiting groove 61. The yarn abuts against the inner wall of the bottom of the limiting groove 61 and moves within the limiting groove 61 to be transmitted to the adjusting wheel 3.

[0025] The upper limit groove 61 of the guide block 6 is designed to prevent the yarn from slipping off the guide block 6 when passing through it, thus affecting the gravity sensor 5's detection of the pressure of the yarn on the guide block. The arc-shaped guide block 6 facilitates better transmission of the yarn to the adjusting roller 3.

[0026] A fixed frame 10 is installed at the output end of the cylinder 4. One side of the adjusting wheel 3 is connected to the fixed frame 10. A guide groove 011 is opened on the frame 01. A shaft 11 corresponding to the frame 01 is installed on the other side of the adjusting wheel 3. A movable wheel 12 is rotatably connected to the shaft 11. The shaft 11 is rotatably connected to the movable wheel 12 through a bearing. The movable wheel 12 rolls in the guide groove 011.

[0027] The controller controls the cylinder 4 to work, and the adjusting wheel 3 rolls in the guide groove 011 on the frame 01 through the moving wheel 12 on the shaft 11. When the cylinder 4 works, it drives the adjusting wheel 3 to move on the frame 01 to adjust the yarn tension.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tension adjusting mechanism of a bobbin winder, comprising a frame (01), a bobbin (02) for winding a thread is installed on the upper end of the frame (01), a spool (03) for unwinding the thread is installed on the lower end of the frame (01), characterized in that, The rack (01) is provided with a first yarn guide (1), a second yarn guide (2), an adjusting yarn wheel (3), a cylinder (4) and a gravity sensor (5). The yarn is wound on the bobbin (02) through the first yarn guide (1), the adjusting yarn wheel (3) and the second yarn guide (2) in sequence. The adjusting yarn wheel (3) is movably connected to the rack (01) and connected to the output end of the cylinder (4). The gravity sensor (5) is arranged between the first yarn guide (1) and the adjusting yarn wheel (3). The sensing surface of the gravity sensor (5) is provided with a guide block (6) in contact with the yarn. The yarn is transmitted to the adjusting yarn wheel (3) through the guide block (6). The rack (01) is provided with a controller electrically connected to the gravity sensor (5) and the cylinder (4).

2. A yarn winder tension adjustment mechanism according to claim 1, wherein, The first yarn guide (1) is provided with a spring (7), a guide tube (8) and a movable plate (9). The guide tube (8) is mounted on the first yarn guide (1), and one end of the spring (7) is mounted in the guide tube (8). The other end of the spring (7) extends out of the guide tube (8) and is mounted on the movable plate (9). The movable plate (9) is arc-shaped and corresponds to the arc-shaped surface of the first yarn guide (1).

3. A yarn winder tension adjustment mechanism according to claim 2, wherein, The guide block (6) is arc-shaped and has a limiting groove (61). The yarn is in contact with the inner wall of the bottom of the limiting groove (61) and moves in the limiting groove (61) to transmit to the adjusting yarn wheel (3).

4. A yarn winder tension adjustment mechanism according to claim 3, wherein, The output end of the cylinder (4) is provided with a fixed frame (10). One side of the adjusting yarn wheel (3) is connected to the fixed frame (10). The rack (01) is provided with a guide groove (011). The other side of the adjusting yarn wheel (3) is provided with a shaft (11) corresponding to the rack (01). The shaft (11) is rotatably connected to a moving wheel (12). The moving wheel (12) rolls in the guide groove (011).

5. A yarn winder tension adjustment mechanism according to claim 4, wherein, The movable plate (9) includes a groove (91) for preventing the yarn from slipping off.

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