A textile thread positioning structure

Abstract

This utility model discloses a textile yarn positioning structure, including a mounting base. A first bearing seat is fixedly installed at the top center of the mounting base. The inner ring of the bearing inside the first bearing seat is fixedly connected to a base support. Four stroke grooves are evenly formed on the top of the base support, and sliders are slidably connected to the inner sides of each of the four stroke grooves. Expansion plates are fixedly connected to the tops of each of the four sliders. In this utility model, through an innovative radial expansion fixing mechanism, a double bearing support structure of the first and second bearing seats is adopted, combined with a screw-driven four-slider synchronous radial expansion mechanism, so that the yarn spool is only subjected to a uniform radial clamping force, completely avoiding the rotational resistance problem caused by the traditional axial compression method. The rotatable design of the first bearing seat allows the fixed yarn spool to rotate freely, effectively eliminating the static friction effect, ensuring smooth yarn feeding, and preventing jamming and yarn damage in the initial feeding stage.

Description

Technical Field

[0001] This utility model relates to the field of positioning structure technology, and in particular to a positioning structure for textile threads. Background Technology

[0002] Textile yarn mainly refers to yarn or silk thread processed by textile machinery, used to make various textiles. Based on the different raw materials, textile yarn can be divided into two main categories: natural fiber yarn and synthetic fiber yarn.

[0003] In the textile process, a textile thread positioning structure is a mechanism used to fix a textile bobbin with the textile thread wound on it to the outside.

[0004] A search revealed that patent CN110937453B discloses a textile thread positioning structure for textile production and processing. By adding two symmetrically placed spare fixing devices to the mounting base of the textile thread positioning structure, the textile thread positioning structure can adapt to textile bobbins of various fixed heights. Thus, when it is necessary to fix a textile bobbin with a smaller height to the textile thread positioning structure, it can be reinforced by the two spare fixing devices.

[0005] However, the above-mentioned device has the following drawbacks: excessive axial pressure applied by the spring mechanism or backup fixing device will cause an abnormal increase in the frictional resistance of the contact surface between the bobbin and the mounting base and top fixing plate, seriously affecting the smoothness of the bobbin rotation and thus interfering with the normal yarn feeding process. More seriously, after the structure is fixed for a long time, it will produce a significant static friction effect. Due to the physical adhesion between the bobbin and the contact surface material, the system starting torque increases sharply, which may damage the yarn in the initial stage of yarn feeding. Therefore, further improvement is needed. To this end, we propose a yarn positioning structure. Utility Model Content

[0006] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a textile thread positioning structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a textile thread positioning structure, including a mounting base, a first bearing seat fixedly installed at the top center of the mounting base, a base support fixedly connected to the inner ring of the bearing of the first bearing seat, and four stroke grooves evenly opened on the top of the base support, with sliders slidably connected to the inner sides of the four stroke grooves.

[0008] An expansion plate is fixedly connected to the top of each of the four sliders;

[0009] A second bearing seat is fixedly connected to the top center of the base. The inner ring of the bearing built into the second bearing seat is fixedly connected to a screw. The outer surface of the screw is threaded with an upper conical expansion block and a lower conical expansion block, and both the upper conical expansion block and the lower conical expansion block are matched with the expansion plate.

[0010] A handwheel is fixedly connected to the top of the screw.

[0011] Furthermore, slide rails are fixedly connected to the inner walls on both sides of the four stroke grooves. This structure ensures the accurate movement trajectory of the slider and avoids deviation during radial expansion.

[0012] Furthermore, grooves are provided on both sides of the outer surface of the four sliders, and the grooves are slidably mounted on the slide rail. The matching design of the grooves and the slide rail greatly reduces frictional resistance, making the expansion action smoother and extending the service life.

[0013] Furthermore, each of the four expansion plates includes an arc-shaped plate, which is fixedly installed on the top of the slider. The arc-shaped plate is fixedly connected to two triangular blocks on one side of the screw, and the inclined surfaces of the upper and lower conical expansion blocks are respectively in contact with the inclined surfaces of the adjacent triangular blocks. The inclined surface cooperation structure realizes the effective transmission of force, ensuring that the four expansion plates move synchronously and the clamping force is evenly distributed.

[0014] Furthermore, the outer surfaces of the upper and lower conical expansion blocks are slidably fitted with two guide rods, which are fixedly installed on the top of the base. The guide rods prevent the conical expansion blocks from rotating, ensuring that they only move axially, thus improving the overall stability of operation.

[0015] Furthermore, the top of the mounting base is evenly provided with multiple mounting holes that extend to the bottom, which facilitates the fixed installation of the mounting base.

[0016] The beneficial effects of this utility model are:

[0017] 1. In use, this utility model employs an innovative radial expansion fixing mechanism with a double-bearing support structure consisting of a first bearing seat and a second bearing seat, combined with a screw-driven four-slider synchronous radial expansion mechanism. This ensures that the bobbin is subjected to only uniform radial clamping force, completely avoiding the rotational resistance problem caused by traditional axial clamping methods. The rotatable design of the first bearing seat allows the fixed bobbin to rotate freely, effectively eliminating static friction effects, ensuring smooth yarn feeding, and preventing initial jamming and yarn damage. This structure guarantees both reliable fixing and low-resistance rotation, solving the key defects in the prior art.

[0018] 2. In use, this utility model innovatively adopts a four-slider synchronous radial expansion structure, which enables rapid and precise fixing of spools of different specifications. The four sliders slide synchronously along the slide rail within the stroke groove, causing the arc-shaped expansion plate to form surface contact with the inner wall of the spool. Combined with the inclined surface drive of the conical expansion block, this ensures not only reliable fixing but also avoids the problem of uneven pressure caused by differences in spool height. It can adapt to spools of various diameters, greatly improving the versatility and ease of operation of the equipment. Attached Figure Description

[0019] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a first-person perspective three-dimensional structural diagram of the present invention;

[0021] Figure 2 For the present utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a first-person perspective three-dimensional structural diagram of the present invention;

[0023] Figure 4 For the present utility model Figure 3 Enlarged view of point B in the middle;

[0024] Figure 5 This is a three-dimensional structural diagram of the connection between the expansion plate and the slide block of this utility model.

[0025] The attached figures are labeled as follows:

[0026] 1. Mounting base; 2. First bearing seat; 3. Base support; 4. Lower conical expansion block; 5. Arc plate; 6. Upper conical expansion block; 7. Handwheel; 8. Slider; 9. Stroke groove; 10. Screw; 11. Second bearing seat; 12. Slide rail; 13. Mounting hole; 14. Guide rod; 15. Triangular block; 16. Slide groove. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-5 As shown, a textile thread positioning structure is disclosed, including a mounting base 1. A first bearing seat 2 is fixedly installed at the top center of the mounting base 1. The inner ring of the bearing inside the first bearing seat 2 is fixedly connected to a base support 3. Four travel grooves 9 are evenly opened on the top of the base support 3. Slider blocks 8 are slidably connected to the inner side of each of the four travel grooves 9. Slide rails 12 are fixedly connected to the inner walls on both sides of each of the four travel grooves 9. Slide grooves 16 are opened on both sides of the outer surface of each of the four sliders 8, and the slide grooves 16 are slidably installed on the slide rails 12. The surface of the slide rails 12 is chrome-plated to ensure smoothness. The cooperation with the slide grooves 16 achieves gapless movement and eliminates the possibility of shaking. The slide grooves 16 are designed with embedded wear-resistant bushings to significantly reduce the coefficient of friction.

[0029] Each of the four sliders 8 has an expansion plate fixedly connected to its top. A second bearing seat 11 is fixedly connected to the center of the top of the base 3. The inner ring of the bearing inside the second bearing seat 11 is fixedly connected to a screw 10. The outer surface of the screw 10 is threaded with an upper conical expansion block 6 and a lower conical expansion block 4, and both the upper conical expansion block 6 and the lower conical expansion block 4 are matched with the expansion plates. Each of the four expansion plates includes an arc plate 5, and the arc plate 5 is fixedly installed on the top of the slider 8. Two triangular blocks 15 are fixedly connected to the side of the arc plate 5 on the screw 10. The inclined surfaces of the upper conical expansion block 6 and the lower conical expansion block 4 are respectively in contact with the inclined surfaces of the adjacent triangular blocks 15. The outer surface of the arc plate 5 is provided with anti-slip texture to enhance the friction with the spool.

[0030] The outer surfaces of the upper conical expansion block 6 and the lower conical expansion block 4 are slidably fitted with two guide rods 14, and the guide rods 14 are fixedly installed on the top of the base 3. The surface of the guide rods 14 is plated with hard chrome to ensure smoothness.

[0031] A handwheel 7 is fixedly connected to the top of the screw 10. The direction of rotation of the screw 10 when it drives the expansion plate to expand is the same as the direction of rotation when the spool releases the line, so as to prevent the screw 10 from becoming loose.

[0032] The top of the mounting base 1 has multiple mounting holes 13 that extend to the bottom.

[0033] Working principle: When it is necessary to fix the textile bobbin, the operator places the bobbin around the positioning mechanism formed by four arc-shaped plates 5. By rotating the handwheel 7, the screw 10 is rotated. Due to the limiting effect of the guide rod 14, the upper conical expansion block 6 and the lower conical expansion block 4 will move axially along the screw 10. The inclined surface of the conical expansion block cooperates with the inclined surface of the triangular block 15, pushing the four sliders 8 to slide outward synchronously along the slide rail 12 within the stroke groove 9. As the sliders 8 move radially, the arc-shaped plate 5 fixed at its top expands outward until it is tightly fitted against the inner wall of the bobbin, thus completing the fixation of the bobbin.

[0034] Specifically, the design of the first bearing seat 2 allows the base 3 to rotate freely relative to the mounting base 1. When the spool is pulled by an external force to rotate and release the line, the entire fixing mechanism (including the base 3, expansion assembly, and spool) can rotate synchronously with the inner ring of the first bearing seat 2, achieving an auxiliary line release function. The second bearing seat 11 ensures smooth rotation of the screw 10 while avoiding interference with the operation of the handwheel 7. This structure ensures both reliable fixing and low-resistance rotation of the spool through bearing support, effectively solving the problem of poor rotation caused by traditional axial clamping methods. Disassembly can be performed by reversing the handwheel 7 to reset the expansion mechanism, making operation simple and efficient.

[0035] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A textile thread positioning structure, comprising a mounting base (1), characterized in that: The mounting base (1) has a first bearing seat (2) fixedly installed at the top center. The bearing inner ring of the bearing built into the first bearing seat (2) is fixedly connected to a base support (3). The top of the base support (3) is evenly provided with four stroke grooves (9). The inner side of each of the four stroke grooves (9) is slidably connected to a slider (8). An expansion plate is fixedly connected to the top of each of the four sliders (8); The bottom support (3) is fixedly connected to the top center of a second bearing seat (11). The inner ring of the bearing built into the second bearing seat (11) is fixedly connected to a screw (10). The outer surface of the screw (10) is threaded with an upper conical expansion block (6) and a lower conical expansion block (4), and both the upper conical expansion block (6) and the lower conical expansion block (4) are matched with the expansion plate. A handwheel (7) is fixedly connected to the top of the screw (10).

2. The textile thread positioning structure according to claim 1, characterized in that: The inner walls on both sides of the four travel grooves (9) are fixedly connected with slide rails (12).

3. The textile thread positioning structure according to claim 2, characterized in that: The four sliders (8) have grooves (16) on both sides of their outer surfaces, and the grooves (16) are slidably mounted on the slide rail (12).

4. A textile thread positioning structure according to claim 1, characterized in that: Each of the four expansion plates includes an arc plate (5), and the arc plate (5) is fixedly installed on the top of the slider (8). The arc plate (5) is located on one side of the screw (10) and is fixedly connected to two triangular blocks (15). The inclined surfaces of the upper conical expansion block (6) and the lower conical expansion block (4) are respectively attached to the inclined surfaces of the adjacent triangular blocks (15).

5. A textile thread positioning structure according to claim 1, characterized in that: The outer surfaces of the upper conical expansion block (6) and the lower conical expansion block (4) are slidably fitted with two guide rods (14), and the guide rods (14) are fixedly installed on the top of the base (3).

6. A textile thread positioning structure according to claim 1, characterized in that: The top of the mounting base (1) is evenly provided with a plurality of mounting holes (13) that extend to the bottom.

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