Intermediate wheel transmission mechanism

Abstract

The utility model relates to the technical field of textile machinery, in particular to an intermediate wheel transmission mechanism. In the prior art, a bobbin is directly pressed on a friction roller, and the friction roller drives the bobbin to rotate, so that a yarn head is tightly attached to the bobbin, the difficulty of finding the yarn head by a large suction nozzle is increased, and the yarn suction success rate of the large suction nozzle is reduced. A middle wheel transmission mechanism is characterized in that a friction roller and a bobbin are arranged below a large suction nozzle, a middle wheel is arranged below the middle of the friction roller and the bobbin, and the middle wheel is driven by a driving mechanism, translates and rotates to be attached to the friction roller and the cylindrical surface of the bobbin; the driving mechanism comprises a rotating arm, middle wheels and a first power mechanism are arranged at the two ends of the rotating arm, a base is arranged in the middle, the base is connected to a second power mechanism and drives the rotating arm to move, the friction roller drives the middle wheels to rotate, the middle wheels drive the bobbins to rotate, and the friction roller and the bobbins are isolated. The bobbin is driven by the middle wheel to rotate, so that a yarn head on the bobbin is prevented from being pressed by the friction roller, and the success rate of sucking the yarn head by the large suction nozzle is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile machinery technical field more specifically, relate to a middle wheel transmission mechanism. BACKGROUND

[0002] In the existing vortex spinning, twist connecting trolley can realize automatic detection yarn end, automatic joint after inputting twist connecting process parameter, realizes automatic spinning after twist connecting, reduces the labor intensity of operator, improves production efficiency. When the big suction nozzle of twist connecting trolley looks for yarn head, drive yarn tube rotation. But the yarn tube of prior art is directly pressed on friction roller, and the yarn tube is rotated by friction roller, which makes the yarn head closely combined with the yarn tube, increases the difficulty of the big suction nozzle to find the yarn head, and reduces the success rate of the big suction nozzle to suck yarn. UTILITARY MODEL

[0003] The utility model discloses a middle wheel transmission mechanism driven yarn tube rotation, avoids the yarn head on yarn tube being pressed by friction roller, greatly improves the success rate of the big suction nozzle to suck yarn head.

[0004] A middle wheel transmission mechanism, including big suction nozzle, the big suction nozzle below is equipped with friction roller and yarn tube, and the middle below of friction roller and yarn tube is equipped with middle wheel, and the middle wheel is driven by drive mechanism, and is combined with the cylindrical surface of friction roller and yarn tube after translation, rotation, the drive mechanism includes rotating arm, and one end of rotating arm is equipped with middle wheel, and the other end is equipped with first power mechanism for rotation, and middle is equipped with base, and base is connected on second power mechanism, and drives base and rotating arm on it to move, and friction roller drives middle wheel rotation, and then yarn tube is driven by middle wheel rotation, and friction roller and yarn tube are isolated a certain distance.

[0005] The utility model drives yarn tube rotation through the middle wheel of side, avoids the yarn head on yarn tube being pressed by friction roller, greatly improves the success rate of the big suction nozzle to suck yarn head.

[0006] As further improvement and supplement to the above scheme, the utility model still includes the following additional technical features:

[0007] The first power mechanism is first cylinder, and the second power mechanism is second cylinder. Simple structure, pneumatic mode is adopted, control is flexible, and efficiency is high.

[0008] The first cylinder and rotating arm are equipped with knuckle bearing. Effectively support, guarantee the need of flexible rotation.

[0009] The rotating arm is equipped with downward bending circular segment at the end of middle wheel. Effectively isolate friction roller, prevent damage to friction roller.

[0010] The intermediate wheel is made of rubber. It has a long service life and will not damage the friction rollers or yarn tubes.

[0011] The following advantages can be achieved by using this utility model: The structure is simple and reasonable, adopts a pneumatic method, and is flexible in control. The yarn tube is rotated by the middle wheel on the side, which avoids the yarn end on the yarn tube being pressed by the friction roller, thus greatly improving the success rate of the large suction nozzle picking up the yarn end. Attached Figure Description

[0012] Fig. 1 This is a schematic diagram of the structure of this utility model.

[0013] Fig. 2 This is the front view of this utility model.

[0014] Fig. 3 This is a schematic diagram of the drive mechanism in this utility model. Detailed Implementation

[0015] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0016] like Figs. 1-3 As shown, this utility model is an intermediate wheel transmission mechanism.

[0017] The intermediate wheel transmission mechanism described in this embodiment includes a large suction nozzle 1. Below the large suction nozzle 1 are a friction roller 2 and a yarn tube 3. An intermediate wheel 4 is located below the friction roller 2 and the yarn tube 3. The intermediate wheel 4 is driven by a drive mechanism, and after translation and rotation, it comes into contact with the cylindrical surfaces of the friction roller 2 and the yarn tube 3. The drive mechanism includes a rotating arm 5, which is an integral structure with both sides inclined downwards and a hook-shaped arrangement at the end of the intermediate wheel 4. One end of the rotating arm 5 has the intermediate wheel 4, and the other end has a first power mechanism for rotation. A base 6 is located in the middle, connected to a second power mechanism, which drives the base 6 and the rotating arm 5 to move. The friction roller 2 drives the intermediate wheel 4 to rotate, and the intermediate wheel 4 then drives the yarn tube 3 to rotate, isolating the friction roller 2 and the yarn tube 3 by a certain distance. The base 6 has a bent structure, with one side fixed to a second cylinder 8 and the other side extending upwards, with its tail end fixed to the rotating arm 5.

[0018] Furthermore, the first power mechanism is a first cylinder 7, and the second power mechanism is a second cylinder 8. The first cylinder 7 extends, driving the rotating arm 5 to rotate at a certain angle, so that the intermediate wheel 4 comes into contact with the friction roller 2 and the yarn tube 3.

[0019] Furthermore, a spherical bearing 9 is provided between the first cylinder 7 and the rotating arm 5. The piston rod of the first cylinder 7 is provided with the spherical bearing 9, and then fasteners pass through the inner spherical surface of the spherical bearing 9 and fix it to the rotating arm 5.

[0020] Further, the rotating arm 5 is provided with a downwardly bent circular arc segment 51 at the end of the intermediate wheel 4, the radius of the circular arc segment 51 is greater than or equal to the radius of the friction roller 2, when the intermediate wheel 4 is in contact with the friction roller 2 and the yarn tube 3, the circular arc segment 51 is located below the friction roller 2, and isolation is performed.

[0021] Further, the material of the intermediate wheel 4 is rubber.

[0022] When the intermediate wheel transmission mechanism is used, when a yarn breakage occurs in a certain spindle position, the yarn tube is separated from the friction roller by a certain distance, the yarn end is prevented from being pressed by the friction roller, the twisting trolley moves to the spindle position, after the trolley is positioned, the first air cylinder 7 drives the base to push outwards, then the second air cylinder 8 acts to pull the rotating arm upwards until the intermediate wheel is pressed onto the friction roller, the yarn tube is pressed inwards again and is close to the intermediate wheel. The large suction nozzle rotates downwards and approaches the yarn tube, after the large suction nozzle is positioned, the friction roller drives the yarn tube to rotate through the intermediate wheel (the intermediate wheel is located at the side of the yarn tube, so that the yarn end in the middle of the yarn tube is prevented from being pressed). After the large suction nozzle sucks the yarn, the large suction nozzle is lifted, the yarn tube continues to rotate, and the large suction nozzle sucks the yarn long enough. After the large suction nozzle returns to the original position, the intermediate wheel also returns to the original position under the action of the air cylinder, at this time the friction roller stops rotating, the yarn tube is pressed inwards and is pressed on the friction roller, and finally the twisting connector performs a twisting operation.

[0023] The above is the preferred embodiment of the present application, and does not limit the protection scope of the present application, and the deformation and improvement made by the person skilled in the art according to the design idea of the present application should be considered as within the protection scope of the present application.

Claims

1. An intermediate wheel drive mechanism comprising a large suction nozzle (1), characterized in that: The large suction nozzle (1) is provided with a friction roller (2) and a bobbin (3) below, the middle wheel (4) is arranged below the middle of the friction roller (2) and the bobbin (3), the middle wheel (4) is driven by a driving mechanism, and the friction roller (2) and the bobbin (3) are attached to the cylindrical surface after translation and rotation; The driving mechanism comprises a rotating arm (5), one end of the rotating arm (5) is provided with the middle wheel (4), the other end is provided with a first power mechanism for rotating, the middle is provided with a base (6), the base (6) is connected to a second power mechanism, the base (6) and the rotating arm (5) thereon are moved, the friction roller (2) drives the middle wheel (4) to rotate, and the bobbin (3) is driven to rotate by the middle wheel (4), the friction roller (2) and the bobbin (3) are isolated by a certain distance.

2. The intermediate wheel drive mechanism of claim 1, wherein: The first power mechanism is a first cylinder (7), and the second power mechanism is a second cylinder (8).

3. The idler wheel drive of claim 2, wherein: A knuckle bearing (9) is arranged between the first cylinder (7) and the rotating arm (5).

4. The idler wheel drive of claim 1, wherein: The rotating arm (5) is provided with a downwardly bent circular arc segment (51) at the end of the middle wheel (4).

5. The idler wheel drive of claim 1, wherein: The material of the middle wheel (4) is rubber.

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