Stepless yarn tension regulation and control system

Abstract

The utility model provides a stepless yarn tension regulation and control system, which solves the problems of poorer yarn conduction limiting effect and the like, and comprises a rotating shaft, a plurality of adjusting sleeves are arranged on the rotating shaft in a sliding way along the axial direction, the adjusting sleeves are respectively and fixedly connected with adjusting rings, and a folding frame body is connected between the adjacent adjusting rings. An axial driving assembly is arranged between the rotating shaft and the adjusting sleeve, and a guiding assembly is installed on the folding frame body. The limiting device has the advantages of good limiting effect, stable structure and the like.

Description

Technical Field

[0001] This utility model belongs to the field of textile equipment technology, specifically relating to a stepless yarn tension control system. Background Technology

[0002] Stepless tension regulation is an important technology in the textile industry, used to precisely control yarn tension during production. It achieves tension control by adjusting the resistance or tension acting on the yarn. Common methods include using adjustable braking devices or tension sensor feedback control to achieve a dynamic balance between the tension acting on the yarn and the resistance generated by the braking device, thus maintaining stable tension. Alternatively, elastic components such as springs or elastic sheets can be used. When yarn tension changes, the elastic component deforms accordingly, and adjusting the degree of deformation changes the force applied to the yarn, thereby achieving stepless tension regulation. However, in practical applications, existing tension regulation systems have poor limiting effects on the yarn transmission direction, and are prone to deviation during yarn transmission.

[0003] To address the shortcomings of existing technologies, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a yarn tension adjustment device for textile machines [202021810185.X], which includes a support assembly, an adjustment assembly, a first clamping plate, and a second clamping plate. The support assembly includes a rear retaining ring and a front retaining ring. A column connects the rear retaining ring and the front retaining ring into one unit. The outer end face of the front retaining ring is provided with a forward shoulder. A central hole extends from the rear retaining ring to the forward shoulder. The column is provided with a vertically penetrating guide groove. The first clamping plate and the second clamping plate are both sleeved on the column and are close to the front retaining ring. The adjustment assembly includes a central shaft, which is placed in a central hole. The rear end of the central shaft is provided with a first shoulder, and the front end is provided with a second shoulder. A rear sliding ring is sleeved on the rear side of the central shaft. A rear abutment rod is provided on each of the upper and lower sides of the rear sliding ring. A front sliding ring is sleeved on the front side of the central shaft. A front abutment rod is provided on each of the two sides of the front sliding ring. A spring is sleeved between the rear sliding ring and the front sliding ring.

[0004] The above solution has solved the problem of yarn winding and storage to some extent, but it still has many shortcomings, such as poor limiting effect on the direction of yarn transmission. Summary of the Invention

[0005] The purpose of this invention is to address the above-mentioned problems by providing a reasonably designed stepless yarn tension control system that achieves yarn conduction and limiting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a stepless yarn tension control system, including a rotating shaft, a plurality of adjusting sleeves slidably mounted on the rotating shaft along the axial direction, adjusting rings fixedly connected to the adjusting sleeves respectively, a folding frame connected between adjacent adjusting rings, an axial drive assembly provided between the rotating shaft and the adjusting sleeves, and a guide assembly installed on the folding frame.

[0007] In the aforementioned stepless yarn tension control system, the rotating shaft has several equidistantly arranged limiting sleeves, the adjusting sleeve is movably installed between the limiting sleeves, and a circumferential limiting component is provided between the adjusting sleeve and the rotating shaft.

[0008] In the aforementioned stepless yarn tension control system, the circumferential limiting component includes a limiting groove extending axially along the rotation axis, and the adjusting sleeve has a limiting strip that is slidably connected to the limiting sleeve. The limiting groove and the limiting strip are respectively arranged symmetrically relative to the central axis of the rotation axis.

[0009] In the aforementioned stepless yarn tension control system, the axial drive assembly includes a drive screw parallel to the rotation shaft. One end of the drive screw is driven by a drive motor via a speed-changing gear set, and the drive screw is also driven by an adjusting sleeve.

[0010] In the aforementioned stepless yarn tension control system, the adjusting ring and the adjusting sleeve are located in the same radial plane, and the adjusting ring and the adjusting sleeve are connected by a support rod extending radially.

[0011] In the aforementioned stepless yarn tension control system, the folding frame includes a folding rod rotatably connected to the adjusting ring. The ends of the folding rods connected to adjacent adjusting rings are rotatably connected to each other, and the rotatable connection points of the folding rod ends are covered with protective sleeves.

[0012] In the aforementioned stepless yarn tension control system, the guide assembly includes a guide rod rotatably connected to a folding rod, a transmission rod rotatably mounted on the folding rod, one end of the transmission rod engaging with an adjusting ring via a reversing gear set, and the other end of the transmission rod engaging with the transmission rod via a reversing gear set.

[0013] In the aforementioned stepless yarn tension control system, a drive sleeve is fixed at the end of the rotating shaft, and a transmission spline is provided on the drive sleeve.

[0014] In the aforementioned stepless yarn tension control system, a displacement sensor is installed between the rotating shaft and the adjusting sleeve, and a contact sensor is installed on the adjusting sleeve.

[0015] In the aforementioned stepless yarn tension control system, positioning sleeves are installed at both ends of the rotating shaft, and positioning rods are connected between the positioning sleeves.

[0016] Compared with existing technologies, the advantages of this utility model are as follows: the folding frame between the adjusting rings supports the yarn and its expansion can be adjusted according to actual needs, and the guide component ensures the limiting effect during the adjustment process; the guide rod in the guide component can divide the folding frame into several independent guide positions, thereby adapting to the transmission and guidance of different yarns; the rotating shaft is equipped with a positioning structure, which can further limit the folding frame and limit the maximum offset of the yarn. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is another structural schematic diagram of the present invention;

[0019] Figure 3 This is a partial schematic diagram of the present invention;

[0020] In the figure, the components are: rotating shaft 1, drive sleeve 11, transmission spline 12, positioning sleeve 13, positioning rod 14, adjusting sleeve 2, adjusting ring 3, folding frame 4, folding rod 41, protective sleeve 42, axial drive assembly 5, drive screw 51, support rod 52, guide assembly 6, guide rod 61, transmission rod 62, limit sleeve 7, circumferential limit assembly 8, limit groove 81, and limit strip 82. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] like Figure 1-3 As shown, a stepless yarn tension control system includes a rotating shaft 1 connected to an external transmission structure. Several adjusting sleeves 2 are slidably mounted on the rotating shaft 1 along its axial direction. Adjusting rings 3 are fixedly connected to each adjusting sleeve 2, and the adjusting rings 3 slide synchronously with the adjusting sleeves 2. A folding frame 4 connects adjacent adjusting rings 3 to support the yarn. An axial drive assembly 5 is provided between the rotating shaft 1 and the adjusting sleeves 2. When the adjusting sleeves 2 are driven to slide by the axial drive assembly 5, the folding frame 4 folds open and closes accordingly. A guide assembly 6 is installed on the folding frame 4 to limit the direction of yarn transmission.

[0023] Specifically, multiple adjusting sleeves 2 are provided on the same rotating shaft 1. In order to limit the movement of the adjusting sleeves 2, the rotating shaft 1 has several equidistantly arranged limiting sleeves 7. The adjusting sleeves 2 are movably installed between the limiting sleeves 7. A circumferential limiting component 8 is provided between the adjusting sleeves 2 and the rotating shaft 1. The circumferential limiting component 8 ensures that the relative angle between the adjusting sleeves 2 and the rotating shaft 1 is fixed in the circumferential direction. When the rotating shaft 1 rotates, the adjusting sleeves 2 and the adjusting rings 3 rotate synchronously as a whole.

[0024] In detail, similar to conventional limiting structures, the circumferential limiting component 8 in this embodiment includes a limiting groove 81 extending axially along the rotation shaft 1, and an adjusting sleeve 2 having a limiting strip 82 slidably connected to the limiting sleeve 7. The limiting groove 81 and the limiting strip 82 are respectively arranged symmetrically relative to the central axis of the rotation shaft 1. The adjusting sleeve 2 and the rotation shaft 1 can be quickly disassembled and assembled, thereby adjusting the overall specifications of the adjusting ring 3 and the folding frame 4.

[0025] Furthermore, the axial drive assembly 5 includes a drive screw 51 parallel to the rotating shaft 1. One end of the drive screw 51 is driven by a drive motor via a gear set, and the drive screw 51 is also driven by an adjusting sleeve 2. The rotating shaft 1 has threaded sections that correspond one-to-one with the adjusting sleeves 2, and the thread directions of adjacent threaded sections are opposite. When the drive screw 51 rotates, adjacent adjusting sleeves 2 move closer to or further away from each other axially.

[0026] Furthermore, the adjusting ring 3 and the adjusting sleeve 2 are located in the same radial plane, and the adjusting ring 3 and the adjusting sleeve 2 are connected by a support rod 52 extending radially. The support rod 52 maintains the relative distance between the adjusting ring 3 and the adjusting sleeve 2, and different lengths of support rods 52 are selected for fixing the adjusting ring 3 with different diameters.

[0027] In addition, the folding frame 4 includes a folding rod 41 rotatably connected to the adjusting ring 3. The ends of the folding rods 41 connected to adjacent adjusting rings 3 are rotatably connected to each other, and the rotatable connection points of the ends of the folding rods 41 are covered with protective sleeves 42. As the adjusting rings 3 separate, the included angle of the folding rods 41 increases accordingly, and the protective sleeves 42 do not affect the normal conduction of the yarn.

[0028] Meanwhile, compared with conventional guide structures, the guide assembly 6 in this embodiment includes a guide rod 61 rotatably connected to the folding rod 41. A transmission rod 62 is rotatably mounted on the folding rod 41. One end of the transmission rod 62 meshes with the adjusting ring 3 through a reversing gear set, and the other end of the transmission rod 62 meshes with the transmission rod 62 through the reversing gear set. Under the linkage of the transmission rod 62 and the reversing gear set, the guide rod 61 always extends radially along the rotation axis 1, without affecting yarn engagement and disengagement.

[0029] As can be seen, a drive sleeve 11 is fixed at the end of the rotating shaft 1, and a transmission spline 12 is provided on the drive sleeve 11. The drive sleeve 11 is connected to the external motor and transmission structure, and the torque is transmitted by the transmission spline 12.

[0030] It is evident that a displacement sensor is installed between the rotating shaft 1 and the adjusting sleeve 2, and a contact sensor is installed on the adjusting sleeve 2. These various sensing elements work inversely with the motor to maintain stable tension.

[0031] Preferably, positioning sleeves 13 are installed at both ends of the rotating shaft 1, and positioning rods 14 are connected between the positioning sleeves 13. When the yarn offset is too large, the positioning rod 14 will stop accordingly. At the same time, the positioning rod 14 is usually equipped with a sensing element and an alarm to remind the operator.

[0032] In summary, the principle of this embodiment is as follows: a folding frame 4 is connected between multiple adjusting rings 3 on the rotating shaft 1 to support the yarn. The folding angle of the folding frame 4 is adjusted by the axial drive component 5 and the guide component 6, thereby realizing the adjustment of yarn tension.

[0033] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0034] Although this document frequently uses terms such as rotating shaft 1, drive sleeve 11, transmission spline 12, positioning sleeve 13, positioning rod 14, adjusting sleeve 2, adjusting ring 3, folding frame 4, folding rod 41, protective sleeve 42, axial drive assembly 5, drive screw 51, support rod 52, guide assembly 6, guide rod 61, transmission rod 62, limiting sleeve 7, circumferential limiting assembly 8, limiting groove 81, and limiting strip 82, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A stepless yarn tension control system, comprising a rotating shaft (1), wherein a plurality of adjusting sleeves (2) are slidably mounted on the rotating shaft (1) along the axial direction, and adjusting rings (3) are fixedly connected to the adjusting sleeves (2) respectively, characterized in that, A folding frame (4) is connected between adjacent adjusting rings (3), an axial drive assembly (5) is provided between the rotating shaft (1) and the adjusting sleeve (2), and a guide assembly (6) is installed on the folding frame (4).

2. The stepless yarn tension control system according to claim 1, characterized in that, The rotating shaft (1) has several equidistantly arranged limiting sleeves (7), the adjusting sleeve (2) is movably installed between the limiting sleeves (7), and a circumferential limiting component (8) is provided between the adjusting sleeve (2) and the rotating shaft (1).

3. The stepless yarn tension control system according to claim 2, characterized in that, The circumferential limiting component (8) includes a limiting groove (81) extending axially along the rotation shaft (1), and the adjusting sleeve (2) has a limiting strip (82) that is slidably connected to the limiting sleeve (7). The limiting groove (81) and the limiting strip (82) are respectively arranged symmetrically relative to the central axis of the rotation shaft (1).

4. The stepless yarn tension control system according to claim 1, characterized in that, The axial drive assembly (5) includes a drive screw (51) parallel to the rotating shaft (1). One end of the drive screw (51) is driven by a drive motor through a gear set. The drive screw (51) is also driven by an adjusting sleeve (2).

5. The stepless yarn tension control system according to claim 4, characterized in that, The adjusting ring (3) and the adjusting sleeve (2) are on the same radial plane, and the adjusting ring (3) and the adjusting sleeve (2) are connected by a support rod (52) extending radially.

6. The stepless yarn tension control system according to claim 5, characterized in that, The folding frame (4) includes a folding rod (41) rotatably connected to the adjusting ring (3). The ends of the folding rods (41) connected to adjacent adjusting rings (3) are rotatably connected to each other, and the rotatable connection of the ends of the folding rods (41) is covered with a protective sleeve (42).

7. The stepless yarn tension control system according to claim 6, characterized in that, The guide assembly (6) includes a guide rod (61) rotatably connected to the folding rod (41). A transmission rod (62) is rotatably mounted on the folding rod (41). One end of the transmission rod (62) meshes with the adjusting ring (3) through a reversing gear set, and the other end of the transmission rod (62) meshes with the transmission rod (62) through the reversing gear set.

8. The stepless yarn tension control system according to claim 1, characterized in that, A drive sleeve (11) is fixed at the end of the rotating shaft (1), and a transmission spline (12) is provided on the drive sleeve (11).

9. The stepless yarn tension control system according to claim 1, characterized in that, A displacement sensor is installed between the rotating shaft (1) and the adjusting sleeve (2), and a contact sensor is installed on the adjusting sleeve (2).

10. The stepless yarn tension control system according to claim 1, characterized in that, The rotating shaft (1) is fitted with positioning sleeves (13) at both ends, and positioning rods (14) are connected between the positioning sleeves (13).

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