Active let-off mechanism and warp knitting machine

Abstract

The utility model discloses an active let-off mechanism and a warp knitting machine, and belongs to the field of textile machinery. Comprising two fixing plates, a rotating shaft with two ends rotatably mounted between the fixing plates, a mounting seat fixedly mounted on one of the fixing plates, a speed reducer arranged on the mounting seat, a driving motor in transmission connection with the speed reducer, and a flexible coupling used for connecting the speed reducer and the rotating shaft. The speed reducer and the rotating shaft are connected through the flexible coupler, vibration of the rotating shaft to be tested is buffered, the let-off stability is further controlled, the flexible coupler adopts the design that the clamping jaws of the first component and the second component are embedded with each other, the flexible coupler is matched with the connecting piece made of the elastic material, vibration in the operation process can be absorbed, and the stability of let-off is improved. The impact in a transmission system is reduced, and tiny offset generated by the rotating speed difference in the active let-off mechanism can be adapted, so that the shaking of the let-off roller is reduced, and the let-off stability is improved.

Description

Technical Field

[0001] The utility model belongs to the field of textile machinery equipment, in particular to an active warp feeding mechanism and a warp knitting machine. Background Art

[0002] The warp knitting machine feeds the warp yarn on the warp beam into the weaving area through the cooperation of the active warp feed mechanism, the passive warp feed mechanism and the wire divider. During the rotation of the warp beam, the speed of the warp movement is controlled by the active warp feed mechanism, and the tension is controlled by the speed difference between the two active warp feed mechanisms. The bolts of the mounting seat of the active warp feed mechanism often loosen after long-term operation, causing the relative position of the drive motor and the rotating shaft to shift, which causes the warp feed roller to shake to a certain extent, making it difficult to effectively control the stability of the warp feed. Especially when dealing with warp threads with harder materials and requiring greater tension, the friction force on the warp feed roller is greater. As long as one of the active warp feed mechanisms shakes, the stability of the warp feed of the entire warp knitting machine will be affected. In addition, the warp threads are prone to surface damage after passing through the warp feed roller, affecting the quality of the warp threads. Utility Model Content

[0003] In order to overcome the above technical defects, the utility model provides an active warp feeding mechanism and a warp knitting machine to solve the problems involved in the background technology.

[0004] The utility model provides an active warp feeding mechanism and a warp knitting machine, comprising: two fixed plates, a rotating shaft rotatably mounted at both ends between the fixed plates, a mounting seat fixedly mounted on one of the fixed plates, a reducer arranged on the mounting seat, a driving motor transmission-connected to the reducer, and a flexible coupling for connecting the reducer and the rotating shaft.

[0005] Preferably or optionally, the reducer adopts gear transmission, which can achieve at least two different reduction ratios.

[0006] Preferably or optionally, the flexible coupling comprises:

[0007] A first member, one end of which is mounted on the output shaft of the reducer, and a plurality of first claws spaced apart from each other are formed on the outer circumference of the other end;

[0008] A second member, one end of which is mounted on the connecting end of the rotating shaft, and a plurality of second claws spaced apart from each other are formed on the outer circumference of the other end; the first claw and the second claw are mutually embedded in the intermediate space formed by the adjacent second claw and the adjacent first claw, and a predetermined gap is left between the first claw and the second claw;

[0009] The connecting piece is made of elastic material and embedded in the predetermined gap.

[0010] Preferably or optionally, the cross-sectional shape of the predetermined gap is an arc-shaped channel which is wide in the middle and narrow at both sides.

[0011] Preferably or optionally, the elastic material is one of styrene-butadiene rubber, thermoplastic vulcanized rubber and thermoplastic polyurethane.

[0012] Preferably or optionally, one end of each of the first component and the second component is provided with a horizontal notch, and corresponding horizontal protrusions are provided on the connecting end of the rotating shaft and the output shaft of the reducer.

[0013] Preferably or optionally, a yarn guide cylinder is fixedly mounted on the rotating shaft, and a plurality of horizontally arranged heat dissipation gaps are formed on the inner side of the yarn guide cylinder.

[0014] Preferably or optionally, the number of the heat dissipation slots is 3 to 8; and the arc of a single heat dissipation slot is π / 24 to π / 12.

[0015] The utility model also provides a warp knitting machine, comprising the active warp feeding mechanism.

[0016] The utility model relates to an active warp feeding mechanism and a warp knitting machine. Compared with the prior art, the utility model has the following beneficial effects: the utility model connects the reducer and the rotating shaft through a flexible coupling, thereby achieving buffering of the vibration of the rotating shaft to be measured, and further controlling the stability of the warp feeding, and the flexible coupling adopts a design in which the claws of the first and second components are embedded in each other, and is equipped with a connecting piece made of elastic material, which can not only absorb vibrations during operation and reduce impacts in the transmission system, but also adapt to slight deviations caused by the speed difference in the active warp feeding mechanism, thereby reducing the shaking of the warp feeding roller and improving the stability of the warp feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0018] Figure 2 It is a structural schematic diagram of the utility model.

[0019] Figure 3 It is a structural schematic diagram of the flexible coupling in the utility model.

[0020] The figures are marked as follows: 100, fixed plate; 200, rotating shaft; 300, mounting seat; 400, reducer; 500, driving motor; 600, flexible coupling; 610, first component; 620, first claw; 630, second component; 640, second claw; 650, connecting piece; 660, horizontal slot; 700, yarn guide tube; 710, heat dissipation gap. DETAILED DESCRIPTION

[0021] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0022] See attached Figures 1 to 3 An active warp feeding mechanism is mainly used in warp knitting machines, and cooperates with passive warp feeding mechanisms, wire dividers and other parts to feed the warp yarns on the warp beam into the weaving area. The active warp feeding mechanism includes: two fixed plates 100, a rotating shaft 200 rotatably mounted between the fixed plates 100 at both ends, a mounting seat 300 fixedly mounted on one of the fixed plates 100, a reducer 400 arranged on the mounting seat 300, a driving motor 500 transmission-connected to the reducer 400, and a flexible coupling 600 for connecting the reducer 400 and the rotating shaft 200.

[0023] The flexible coupling 600 includes: a first member 610, a second member 630 and a connecting piece 650. One end of the first member 610 is mounted on the output shaft of the reducer 400, and a plurality of first claws 620 spaced apart from each other are formed on the outer periphery of the other end; one end of the second member 630 is mounted on the connecting end of the rotating shaft 200, and a plurality of second claws 640 spaced apart from each other are formed on the outer periphery of the other end; and the first claws 620 and the second claws 640 are mutually embedded in the intermediate space formed by the adjacent second claws 640 and the adjacent first claws 620, and a predetermined gap is left between the first claws 620 and the second claws 640; the connecting piece 650 is made of elastic material and embedded in the predetermined gap, and the elastic material is one of styrene-butadiene rubber, thermoplastic vulcanized rubber, and thermoplastic polyurethane. It is preferably thermoplastic polyurethane with excellent mechanical properties, wear resistance and good oil resistance to ensure the service life of the flexible coupling 600. In this embodiment, a plurality of first claws 620 and second claws 640 are respectively arranged on the first component 610 and the second component 630, which are nested with each other in a staggered manner to form a connection structure that is both flexible and stable, allowing a certain angular deviation and axial offset compensation capability between the two axes, which is very effective in reducing stress concentration caused by installation deviation or vibration generated during operation. The elastic connecting member 650 can not only absorb and buffer the impact and vibration during operation and reduce the impact in the transmission system, but also adapt to the slight offset caused by the speed difference in the active warp feeding mechanism, thereby reducing the shaking of the warp feeding roller and improving the warp feeding stability.

[0024] In a further embodiment, the cross-sectional shape of the predetermined gap is an arc-shaped channel that is wide in the middle and narrow on both sides. The arc-shaped cross-sectional design that is wide in the middle and narrow on both sides enables the coupling 650 to have a larger elastic deformation range along the width direction when deformed by force, thereby improving the ability of the coupling to absorb vibration and alleviate impact, and also ensuring that the coupling 650 can still maintain effective contact and transmit power when there is a large angle offset or axial movement, thereby enhancing the adaptability and stability of the entire active warp let-off mechanism.

[0025] In a further embodiment, the reducer 400 adopts gear transmission and can achieve at least two different reduction ratios. The reducer 400 can adjust the transmission ratio according to the warp material and the required tension, thereby ensuring precise control and stability of warp feeding under different working conditions.

[0026] In a further embodiment, a horizontal notch 660 is provided at one end of the first member 610 and the second member 630, and corresponding horizontal protrusions are provided on the connection end of the rotating shaft 200 and the output shaft of the reducer 400. The protrusions are embedded in the notches to prevent relative sliding during rotation and increase the stability of the connection parts, so that a good connection state can be maintained even in high torque transmission or vibration environments.

[0027] In a further embodiment, a yarn guide cylinder 700 is fixedly mounted on the rotating shaft 200, and a plurality of horizontally arranged heat dissipation gaps 710 are formed on the inner side of the yarn guide cylinder 700. Mounting holes are arranged at both ends of the yarn guide cylinder 700, and the yarn guide cylinder 700 is fixedly mounted on the rotating shaft 200 by passing bolts through the mounting holes. Arranging a plurality of horizontal heat dissipation gaps 710 on the inner side of the yarn guide cylinder 700 can not only effectively promote air circulation and avoid damage or deformation of the warp yarn due to excessive temperature, but also improve the friction coefficient between the warp yarn and the yarn guide cylinder 700, which is particularly important when processing hard warp yarns.

[0028] When the curvature of the heat dissipation gap 710 is too large, the yarn guide tube 700 will become close to forming an obvious polygonal structure, causing the warp yarn to jump on the surface of the yarn guide tube 700. This jumping not only increases the friction of the warp yarn, but also may cause uneven tension of the warp yarn, affecting the uniformity and stability of the warp feeding, and even causing the warp yarn to break in extreme cases. The number of the heat dissipation gaps 710 is 3 to 8; the curvature of a single heat dissipation gap 710 is π / 24 to π / 12, which ensures sufficient heat dissipation capacity while avoiding the negative impact of the surface morphology of the yarn guide tube 700 on the warp yarn guidance, ensuring the stability of the warp feeding process and the quality of the warp yarn.

[0029] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

Claims

1. An active warp let-off mechanism, characterized in that: include: Two fixed plates (100), a rotating shaft (200) rotatably mounted at both ends between the fixed plates (100), a mounting seat (300) fixedly mounted on one of the fixed plates (100), a reducer (400) disposed on the mounting seat (300), a driving motor (500) drivingly connected to the reducer (400), and a flexible coupling (600) for connecting the reducer (400) and the rotating shaft (200).

2. The active warp let-off mechanism according to claim 1, characterized in that: The reducer (400) adopts gear transmission and can achieve at least two different reduction ratios.

3. The active warp let-off mechanism according to claim 1, characterized in that: The flexible coupling (600) comprises: A first component (610), one end of which is mounted on the output shaft of the reducer (400), and a plurality of first claws (620) spaced apart from each other are formed on the outer circumference of the other end; A second component (630), one end of which is mounted on the connecting end of the rotating shaft (200), and a plurality of second claws (640) spaced apart from each other are formed on the outer circumference of the other end; the first claw (620) and the second claw (640) are mutually embedded in the intermediate space formed by the adjacent second claws (640) and the adjacent first claws (620), and a predetermined gap is left between the first claw (620) and the second claw (640); The connecting piece (650) is made of elastic material and embedded in the predetermined gap.

4. The active warp let-off mechanism according to claim 3, characterized in that: The cross-sectional shape of the predetermined gap is an arc-shaped channel which is wide in the middle and narrow at both sides.

5. The active warp let-off mechanism according to claim 3, characterized in that: The elastic material is one of styrene-butadiene rubber, thermoplastic vulcanized rubber and thermoplastic polyurethane.

6. The active warp let-off mechanism according to claim 3, characterized in that: One end of each of the first component (610) and the second component (630) is provided with a horizontal notch (660), and corresponding horizontal protrusions are provided on the connecting end of the rotating shaft (200) and the output shaft of the reducer (400).

7. The active warp let-off mechanism according to claim 1, characterized in that: A yarn guide cylinder (700) is fixedly mounted on the rotating shaft (200), and a plurality of horizontally arranged heat dissipation gaps (710) are formed on the inner side of the yarn guide cylinder (700).

8. The active warp let-off mechanism according to claim 7, characterized in that: The number of the heat dissipation slots (710) is 3 to 8; the arc of a single heat dissipation slot (710) is π / 24 to π / 12.

9. A warp knitting machine, characterized in that: include: The active warp let-off mechanism according to any one of claims 1 to 8.

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