Yarn tension maintaining device for circular knitting machine
Through the cylinder-driven U-shaped support and tension wheel structure, the yarn tension is maintained constant, solving the problem of yarn tension fluctuations in the circular loom, and improving fabric quality and production efficiency.
Patent Information
- Application Number
- CN202422278698.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The yarn tension adjustment method of existing circular looms cannot be effectively maintained constant, resulting in too large or too small changes in the tension of the yarn during the braiding process, affecting the quality and production efficiency of the fabric.
The U-shaped support and tension wheel structure driven by cylinder are adopted. The U-shaped support driven by cylinder drives the tension wheel to expand and retract, keeping the yarn tension constant, and quickly position and install through the combination of the baffle, fixture and limiting groove.
Effectively prevent the yarn tension from being too small, resulting in insufficient fabric density or excessive yarn breakage, improve production efficiency, ensure fabric quality and reduce downtime.
Smart Images
Figure CN223074366U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of circular looms, in particular to a yarn tension maintaining device for large circular knitting machines. Background Art
[0002] Circular looms refer to industrial equipment used to weave tubular cloth. Circular looms usually use tension adjustment devices to stabilize the warp tension, ensure the smooth weaving process, and improve the quality of the fabric. The existing tension adjustment methods of circular looms are usually spring adjustment and knob adjustment. These two tension adjustment methods usually need to be adjusted in advance according to factors such as fabric type, specification, and number of needles. However, during the weaving process, the yarn will rotate and intertwine with each other under the action of the knitting needles, causing the yarn tension to change all the time. Therefore, the yarn tension may be too high during the weaving process, causing the yarn to break, or too low, causing the fabric density to be insufficient, the formation to be loose and poor, and even causing loop unwinding or breakage in subsequent processes, increasing the amount of yarn waste, and seriously affecting work efficiency. Utility Model Content
[0003] In order to overcome the above-mentioned shortcomings of the prior art, the utility model provides a yarn tension maintaining device for a circular knitting machine.
[0004] The technical solution adopted by the utility model to solve its technical problems is: a yarn tension maintaining device for a large circular knitting machine, comprising a bracket, the bracket is arranged on an external frame, the bracket is provided with a plurality of tensioning devices, the tensioning device comprises a detachable fixing part sleeved on the bracket, one side of the fixing part is fixedly connected with a cylinder, the movable end of the cylinder is drivingly connected with a U-shaped support part, the U-shaped support part is connected with a tension wheel, the tension wheel is rotatably connected to the U-shaped support part through a rotating shaft, when in use, the cylinder and the tension wheel are used to ensure that the yarn tension remains unchanged, when the yarn tension becomes smaller, the cylinder will drive the U-shaped support part to drive the tension wheel and the yarn to extend outward, when the yarn tension becomes larger, the cylinder will drive the U-shaped support part to drive the tension wheel and the yarn to retract inward.
[0005] Preferably, the fixing piece comprises two symmetrically arranged fixing blocks, which are rotatably connected by a hinge, and a buckle for fixing the two fixing blocks is provided on the side of the fixing block away from the hinge. When in use, the fixing piece is first opened, put on the bracket, and then fixed to the bracket by the buckle.
[0006] Preferably, a number of retaining pieces are provided on the bracket. When installing the tensioning device, the fixing piece can be quickly positioned through the retaining pieces. A limiting strip is provided at the joint of the retaining piece and the fixing piece, and a limiting groove for cooperating with the limiting strip is provided on the fixing piece. The angle of the tensioning device can be locked through the limiting strip and the limiting groove, so that the tensioning wheel is at a horizontal angle. A bolt is provided on one side of the retaining piece, passing through the retaining piece and extending into the fixing piece, to prevent the tensioning device from shaking during operation, resulting in changes in the yarn tension.
[0007] The beneficial effects of the present utility model are as follows: By means of the air cylinder, the tension of the yarn on the tensioning wheel is kept constant, preventing the situation that the fabric density is insufficient, the forming is poor, or even looping or breaking of the yarn occurs in subsequent processes due to too small yarn tension, increasing the amount of waste yarn, or the yarn breaking due to too large yarn tension, resulting in the machine stopping and requiring workers to handle. It effectively improves production efficiency. In addition, through the cooperation of the retaining piece, the fixing piece, the limiting strip and the limiting groove, the tensioning device can be quickly positioned and installed, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0008] The present utility model will be further described below with reference to the drawings and embodiments.
[0009] Figure 1 is the top view of the present utility model;
[0010] Figure 2 is the front view of the tensioning device of the present utility model;
[0011] Figure 3 is Figure 1 the partial enlarged view of part A in
[0012] Figure 4 is the exploded view of the fixing piece and the retaining piece of the present utility model;
[0013] In the figure, 1, bracket; 2, tensioning device; 3, fixing piece; 4, air cylinder; 5, U-shaped support; 6, tensioning wheel; 7, fixing block; 8, hinge; 9, buckle; 10, retaining piece; 11, limiting strip; 12, limiting groove. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0014] All the features disclosed in this specification, or all the steps in any method or process disclosed, except for mutually exclusive features and / or steps, can be combined in any way.
[0015] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless specifically stated, can be replaced by other equivalent or features with similar purposes. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.
[0016] Such asFigures 1-4 A yarn tension maintaining device for a circular knitting machine, as shown, includes a bracket 1 which is arranged on an external frame. A number of tensioning devices 2 are provided on the bracket 1. The tensioning device 2 includes a detachable fixing member 3 sleeved on the bracket 1. One side of the fixing member 3 is fixedly connected with a cylinder 4. The movable end of the cylinder 4 is drivingly connected with a U-shaped support member 5. A tension wheel 6 is connected to the U-shaped support member 5. The tension wheel 6 is rotationally connected to the U-shaped support member 5 through a rotating shaft. During use, the cylinder 4 and the tension wheel 6 are used to ensure that the yarn tension remains unchanged. When the yarn tension becomes smaller, the cylinder 4 will drive the U-shaped support member 5 to drive the tension wheel 6 and the yarn to extend outwards. When the yarn tension becomes larger, the cylinder 4 will drive the U-shaped support member 5 to drive the tension wheel 6 and the yarn to retract inwards.
[0017] The fixing member 3 includes two symmetrically arranged fixing blocks 7. The fixing blocks 7 are rotationally connected through a hinge 8. A buckle 9 for fixing the two fixing blocks 7 is provided on the side of the fixing block 7 away from the hinge 8. During use, first open the fixing member 3, sleeve it onto the bracket 1, and fix the fixing member 3 on the bracket 1 through the buckle 9.
[0018] A number of retaining plates 10 are provided on the bracket 1. When installing the tensioning device 2, the fixing member 3 can be quickly positioned through the retaining plates 10. A limiting strip 11 is provided at the joint of the retaining plate 10 and the fixing member 3. A limiting groove 12 for cooperating with the limiting strip 11 is provided on the fixing member 3. The angle of the tensioning device 2 can be locked through the limiting strip 11 and the limiting groove 12, so that the tensioning wheel 6 is in a horizontal angle. A bolt penetrating through the retaining plate 10 and extending into the fixing member 3 is provided on one side of the retaining plate 10 to prevent the tensioning device 2 from shaking during operation, resulting in changes in the yarn tension. Specific embodiment
[0019] The cylinder 4 is used to ensure that the tension of the yarn on the tension wheel 6 remains constant. When the yarn tension becomes smaller, the cylinder 4 will drive the U-shaped support member 5 to drive the tension wheel 6 and the yarn to extend outwards. When the yarn tension becomes larger, the cylinder 4 will drive the U-shaped support member 5 to drive the tension wheel 6 and the yarn to retract inwards. The position and angle of the tensioning device 2 can be quickly positioned through the fixing member 3 and the retaining plate 10, which is convenient for installation.
[0020] The design of this solution is ingenious. The cylinder is used to ensure that the tension of the yarn on the tension wheel remains constant, preventing the fabric density from being insufficient and the forming being poor due to too small yarn tension, or even causing loop dropping or broken ends in subsequent processes, increasing the amount of waste yarn, or the yarn breaking due to too large yarn tension, resulting in the machine stopping and requiring workers to handle. It effectively improves production efficiency. In addition, through the cooperation of the retaining plate, the fixing member, the limiting strip and the limiting groove, the tensioning device can be quickly positioned and installed, which is convenient to use.
[0021] The utility model is not limited to the foregoing specific embodiments. The utility model extends to any new feature or any new combination disclosed in this specification, as well as any new combination of steps of any new method or process disclosed.
Claims
1. A yarn tension maintaining device for a circular knitting machine, characterized in that: It includes a bracket (1), the bracket (1) is arranged on an external frame, and a number of tensioning devices (2) are provided on the bracket (1). The tensioning device (2) includes a detachable fixing member (3) sleeved on the bracket (1). One side of the fixing member (3) is fixedly connected to a cylinder (4), and the movable end of the cylinder (4) is drivingly connected to a U-shaped support member (5). A tension wheel (6) is connected to the U-shaped support member (5), and the tension wheel (6) is rotatably connected to the U-shaped support member (5) through a rotating shaft.
2. The yarn tension maintaining device for a circular knitting machine according to claim 1, characterized in that: The fixing member (3) includes two symmetrically arranged fixing blocks (7), and the fixing blocks (7) are rotatably connected through a hinge (8). A buckle (9) for fixing the two fixing blocks (7) is provided on one side of the fixing block (7) away from the hinge (8).
3. A yarn tension maintaining device for a circular knitting machine according to claim 1, characterized in that: A number of retaining pieces (10) are provided on the bracket (1). A limiting strip (11) is provided at the joint of the retaining piece (10) and the fixing member (3). A limiting groove (12) for cooperating with the limiting strip (11) is provided on the fixing member (3). A bolt passing through the retaining piece (10) and extending into the fixing member (3) is provided on one side of the retaining piece (10).