A fabric support bracket for a circular knitting machine

Abstract

This utility model discloses a fabric support bracket for a circular knitting machine, including a base frame arranged in a left-right direction. A fixed seat is located in the middle of the base frame, and a forward-extending rotating shaft is rotatably connected to the fixed seat. A screw section is located at the front end of the rotating shaft, and a top rod that can move back and forth is threadedly connected to the screw section. An arc-shaped guide rod section is located at the front end of the top rod, with both ends of the guide rod section extending backward from the left and right sides respectively. Fabric support rods are movably connected to both ends of the guide rod section. A threaded sleeve is also fitted onto the screw section, and locking nuts threaded to the screw section are located at both ends of the threaded sleeve. A telescopic seat that can move back and forth is threadedly connected to the threaded sleeve. A diagonal brace is movably connected between the telescopic seat and the middle or rear of the fabric support rod. This utility model has the advantages of relatively simplified structure, more adjustment dimensions, more convenient operation, and wider applicability.

Description

Technical Field

[0001] This utility model relates to the field of fabric support technology, and in particular to a fabric support for a circular knitting machine. Background Technology

[0002] Circular knitting machines are widely used in the textile industry, producing greige fabrics that are typically tubular in shape. In subsequent dyeing, finishing, or cutting processes, this tubular fabric often needs to be longitudinally slit along its axis to form a flat-width fabric for further processing and winding. To ensure that the slit flat-width fabric is guided and wound onto the roll smoothly and without wrinkles, a fabric support is usually installed between the slitting device and the winding device. The core function of the fabric support is to apply tension to both sides of the slit fabric edges and unfold it to a predetermined width, while simultaneously guiding the fabric smoothly and evenly to the winding mechanism.

[0003] Currently, some existing fabric support brackets used in circular knitting machines have revealed shortcomings during use. For example, some traditional fabric support brackets have complex structural designs with numerous parts, increasing manufacturing costs and causing inconvenience in installation and maintenance. More importantly, their adjustment flexibility is often low. Specifically, some brackets have limited range of fabric width adjustment or are inconvenient to operate; others, while able to adjust the fabric width, struggle to coordinate the adjustment of the fabric support length or opening angle in the spread area, meaning they cannot effectively adjust the width and shape of the fabric support simultaneously or separately. This results in existing fabric support brackets being unable to adapt quickly and accurately when processing knitted fabrics of different weights, elasticities, or widths, potentially leading to poor fabric support (such as fabric edge curling, central slack, or uneven tension), thus affecting the quality of subsequent windings and even the flatness of the finished fabric, ultimately limiting production efficiency and equipment versatility.

[0004] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and this utility model is made based on this situation. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a fabric support bracket for a circular knitting machine with a relatively simplified structure, more adjustable dimensions, more convenient operation, and wider applicability.

[0006] This utility model is achieved through the following technical solution:

[0007] To solve the above-mentioned technical problems, this utility model provides a fabric support bracket for a circular knitting machine, including a base frame arranged in a left-right direction. A fixed seat is provided in the middle of the base frame. A forward-extending rotating shaft is rotatably connected to the fixed seat. A screw part is provided at the front end of the rotating shaft. A top rod that can move back and forth is threadedly connected to the screw part. An arc-shaped guide rod part is provided at the front end of the top rod. The two ends of the guide rod part extend backward from the left and right sides respectively. Fabric support rods are movably connected to both ends of the guide rod part. A threaded sleeve is also fitted on the screw part. Locking nuts that are threadedly connected to the screw part are provided at the front and rear ends of the threaded sleeve. A telescopic seat that can move back and forth is threadedly connected to the threaded sleeve. An inclined support rod is movably connected between the telescopic seat and the middle or rear part of the fabric support rod.

[0008] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a fabric support bracket for a circular knitting machine, wherein the two ends of the diagonal support rod are respectively rotatably connected to the telescopic seat and the fabric support rod, and the rotation axis of the above-mentioned rotatably connected is set in the vertical direction.

[0009] In order to further solve the technical problems to be solved by this utility model, the present utility model provides a fabric support bracket for a circular knitting machine, wherein a movable support structure is provided between the fabric support rod and the base frame.

[0010] To further address the technical problems addressed by this utility model, the present utility model provides a fabric support bracket for a circular knitting machine. The movable support structure includes a sliding support rod slidably connected to the base frame in the front-to-back direction. A first connecting rod is rotatably connected to the front end of the sliding support rod, and a second connecting rod is rotatably connected to the front end of the first connecting rod. The front end of the second connecting rod is rotatably connected to the middle or rear of the fabric support rod. Furthermore, the rotation axes connecting the sliding support rod and the first connecting rod, the first connecting rod and the second connecting rod, and the second connecting rod and the fabric support rod are all arranged in the vertical direction.

[0011] In order to further solve the technical problems to be solved by this utility model, the present utility model provides a fabric support bracket for a circular knitting machine, wherein the threaded sleeve is connected to the screw part by a thread.

[0012] In order to further solve the technical problems to be solved by this utility model, the present utility model provides a fabric support bracket for a circular knitting machine, wherein a handwheel is provided at the rear end of the rotating shaft.

[0013] In order to further solve the technical problems to be solved by this utility model, the present utility model provides a fabric support bracket for a circular knitting machine, wherein the rotating shaft is rotatably connected to the fixed base through a bearing.

[0014] To further address the technical problems to be solved by this utility model, in the fabric support bracket of a circular knitting machine provided by this utility model, the left and right ends of the guide rod and the corresponding fabric support rod are respectively connected by a universal joint.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The fabric support frame of this invention serves to support the fabric, preventing it from curling at the edges. In this invention, rotating the handwheel drives the top rod to move back and forth, causing the left and right support rods to move accordingly, thus adjusting the horizontal width of the fabric support frame. Simultaneously, rotating the handwheel also drives the telescopic seat on the threaded sleeve to move back and forth, thereby adjusting the opening angle of the left and right support rods. This invention allows for convenient multi-dimensional adjustment of both the horizontal width and the opening angle of the support rods, enabling adaptation to different fabric materials. Attached Figure Description

[0017] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 This is a three-dimensional structural schematic diagram of the present invention (some parts are not shown).

[0019] Figure 2 This is a top view of the present invention;

[0020] Figure 3 This is a sectional view of the turning point. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0022] like Figures 1 to 3 As shown, the present invention provides a fabric support bracket for a circular knitting machine, comprising a base frame 1 horizontally arranged in the left-right direction. A fixed seat 11 is fixedly installed in the middle of the base frame 1. A rotating shaft 2 extending forward (the direction in which the fabric leaves the cutting device and enters the fabric support bracket is generally from back to front as shown in the figure) is rotatably connected to the fixed seat 11 via one or more bearings 23. A handwheel 22 is fixedly connected to the rear end of the rotating shaft 2 to facilitate the operator's application of force. The front end of the rotating shaft 2 is formed as or connected to a screw portion 21, which has external threads.

[0023] A push rod 3, capable of axial (front-back) reciprocating movement, is threaded onto the screw section 21. The front end of the push rod 3 is fixedly connected to an integrally formed or separately assembled arc-shaped guide rod section 31. The guide rod section 31 has a forward-facing convex arc shape, with its left and right ends extending symmetrically from the center line of the support to the left and right sides, and slightly tilted backward. A pair of fabric support rods 4 are movably connected to the left and right ends of the guide rod section 31 via universal joints 32. The fabric support rods 4 are components that directly contact the edge of the cut fabric and apply a spreading force. Their front ends are connected to the guide rod section 31 via universal joints 32, enabling flexible rotation with multiple degrees of freedom to better adapt to the shape of the fabric.

[0024] A threaded sleeve 5 is also fitted onto the screw portion 21. In a preferred embodiment, the threaded sleeve 5 is connected to the external thread of the screw portion 21 via its internal thread, and is fixed by locking nuts 51 at both ends (rotation is only permitted during specific adjustments). The locking nuts 51 are also threaded onto the screw portion 21 and are used to lock the axial position of the threaded sleeve 5 on the screw portion 21 or to set its initial reference position when needed.

[0025] In other words, the function of the locking nut 51 is to fix the threaded sleeve 5 to a corresponding position on the screw part 21, which can be adjusted according to the actual situation. More importantly, the front and rear locking nuts 51 can also limit the sliding range of the telescopic seat 52.

[0026] The outer surface of the threaded sleeve 5 is provided with an external thread (or other transmission structure that can achieve a similar function) for threaded connection to a telescopic seat 52 that can reciprocate axially (backward and forward direction). That is, the telescopic seat 52 engages with the external thread of the threaded sleeve 5 through its internal thread. The middle or rear part of each of the fabric support rods 4 (i.e., the end away from the connecting end of the guide rod part 31) is movably connected to the telescopic seat 52 by a diagonal brace 6. Preferably, the two ends of the diagonal brace 6 are rotatably connected to the telescopic seat 52 and the corresponding fabric support rod 4 by means of pins or small ball joints, and the rotation axes of the two rotatably connected parts are both set in the vertical direction (i.e., perpendicular to the fabric plane), thereby allowing the fabric support rod 4 to open or close more smoothly in the horizontal plane.

[0027] To enhance the structural stability of the fabric support rods 4 during operation, especially when the spread width is large or the fabric tension is high, a movable support structure 7 is provided between the middle or rear of each fabric support rod 4 and the base frame 1. In a specific embodiment, the movable support structure 7 includes a sliding support rod 71 slidably connected to the base frame 1 in the front-rear direction (e.g., through a guide rail slider mechanism or a sliding bearing). The front end of the sliding support rod 71 is rotatably connected to one end of a first connecting rod 72 via a vertical pivot; the other end of the first connecting rod 72 is also rotatably connected to one end of a second connecting rod 73 via a vertical pivot; the other end of the second connecting rod 73 is rotatably connected to the middle or rear of the corresponding fabric support rod 4 via a vertical pivot. This multi-link mechanism, consisting of the sliding support rod 71, the first connecting rod 72, and the second connecting rod 73, can synchronously extend or retract when the fabric support rods 4 move (i.e., spread or retract), thereby always providing reliable support for the fabric support rods 4.

[0028] Working principle and adjustment process:

[0029] This utility model's circular knitting machine fabric support bracket, through its ingenious linkage design, enables convenient adjustment of the fabric support width and the opening angle of the fabric support rod, and can even achieve a certain degree of synchronous adjustment to adapt to different types and specifications of fabrics, effectively preventing fabric curling and ensuring the quality of subsequent winding.

[0030] The adjustment of the fabric support width and the synchronous change of the fabric support angle: When the operator rotates the handwheel 22, it drives the rotating shaft 2 and the screw part 21 at the front end to rotate together. Since the push rod 3 is threadedly engaged with the screw part 21 through the internal thread, when the screw part 21 rotates, the push rod 3 will move forward or backward linearly along the axis of the screw part 21 (depending on the rotation direction of the screw part 21 and the thread direction). The linear movement of the push rod 3, through the arc-shaped guide rod part 31 at its front end, pushes or pulls back the front ends of the two fabric support rods 4 connected to it through the universal joint 32, thereby changing the lateral distance between the front ends of the two fabric support rods 4, thus realizing the adjustment of the fabric support width.

[0031] Meanwhile, as mentioned earlier, in order to achieve effective linkage adjustment of the fabric support width and angle, the telescopic seat 52 is threadedly connected to the outer surface of the threaded sleeve 5. As the rotating shaft 2 and the threaded sleeve 5 rotate (the two rotate synchronously), the telescopic seat 52 moves axially accordingly. The movement of the telescopic seat 52 changes the point of application of the push and pull force on the rear part of the fabric support rod 4 through the diagonal brace 6, thereby changing the opening angle of the fabric support rod 4 relative to the direction of fabric movement.

[0032] With the above structure, when the operator rotates the handwheel 22, the movement of the top rod 3 mainly adjusts the total width of the fabric support, while the movement of the telescopic seat 52 mainly affects the opening shape (angle) of the fabric support rod 4. Since the axial displacement of both the top rod 3 and the telescopic seat 52 is driven by the rotation of the same screw section 21, and their displacement amount or direction can be correlated as desired through the design of the thread parameters, it is achieved that while adjusting the fabric support width, the opening angle of the fabric support rod also changes accordingly, achieving a convenient multi-dimensional synchronous adjustment effect. This synchronous adjustment mechanism can better adapt to the optimal opening shape required by different fabrics at different widths.

[0033] Independent fine-tuning of the fabric support angle: Based on the synchronous adjustment, if a more precise independent adjustment of the opening angle of the fabric support rod 4 is required, the operator can manually rotate the threaded sleeve 5 (after temporarily releasing its relative locking state with the screw part 21) to change the initial position of the threaded sleeve 5, thereby fine-tuning the initial opening angle of the fabric support rod 4. After adjusting to the appropriate position, it can be fixed by using the locking nut 51, which is set on the threaded sleeve 5 to limit the sliding range of the telescopic seat 52 or to lock the telescopic seat 52, to maintain the adjusted state.

[0034] Through the above adjustment methods, the fabric support bracket of this utility model can flexibly adapt to knitted tubular split fabrics of different weights, elasticities, and widths, ensuring that the fabric is flattened and stretched before entering the winding process, effectively avoiding problems such as curling edges and wrinkling, and improving the quality of finished products and production efficiency.

[0035] In addition, the use of universal joint 32 makes the connection at the front end of the support rod 4 more flexible and better adapts to the natural direction of the fabric edge; the movable support structure 7 provides stable dynamic support for the support rod 4, ensuring structural rigidity when supporting the fabric under high tension or wide width.

Claims

1. A stitch holder support for a circular knitting machine, characterized in that: The device includes a base frame (1) arranged in the left-right direction. A fixed seat (11) is provided in the middle of the base frame (1). A forward-extending shaft (2) is rotatably connected to the fixed seat (11). A screw part (21) is provided at the front end of the shaft (2). A top rod (3) that can move back and forth is threadedly connected to the screw part (21). An arc-shaped guide rod part (31) is provided at the front end of the top rod (3). The two ends of the guide rod part (31) extend backward from the left and right sides respectively. A cloth support rod (4) is movably connected to both the left and right ends of the guide rod part (31). A threaded sleeve (5) is also fitted on the screw part (21). Locking nuts (51) that are threadedly connected to the screw part (21) are also provided at the front and rear ends of the threaded sleeve (5). A telescopic seat (52) that can move back and forth is threadedly connected to the threaded sleeve (5). A diagonal brace (6) is movably connected between the telescopic seat (52) and the middle or rear part of the cloth support rod (4).

2. The fabric support bracket for a circular knitting machine according to claim 1, characterized in that: The two ends of the diagonal brace (6) are rotatably connected to the telescopic seat (52) and the support rod (4), respectively, and the rotation axes of the above-mentioned rotatable connections are all set in the vertical direction.

3. The fabric support bracket for a circular knitting machine according to claim 1, characterized in that: A movable support structure (7) is provided between the support rod (4) and the base frame (1).

4. The fabric support bracket for a circular knitting machine according to claim 3, characterized in that: The movable support structure (7) includes a sliding support rod (71) that is slidably connected to the base frame (1) in the front-back direction. The front end of the sliding support rod (71) is rotatably connected to a first connecting rod (72). The front end of the first connecting rod (72) is rotatably connected to a second connecting rod (73). The front end of the second connecting rod (73) is rotatably connected to the middle or rear of the support rod (4). The rotation axis connecting the sliding support rod (71) and the first connecting rod (72), the rotation axis connecting the first connecting rod (72) and the second connecting rod (73), and the rotation axis connecting the second connecting rod (73) and the support rod (4) are all set in the vertical direction.

5. The fabric support bracket for a circular knitting machine according to claim 1, characterized in that: The threaded sleeve (5) is threadedly connected to the screw part (21).

6. The fabric support bracket for a circular knitting machine according to claim 1, characterized in that: A handwheel (22) is provided at the rear end of the rotating shaft (2).

7. The fabric support bracket for a circular knitting machine according to claim 1, characterized in that: The rotating shaft (2) is rotatably connected to the fixed seat (11) via a bearing (23).

8. The fabric support bracket for a circular knitting machine according to claim 1, characterized in that: The left and right ends of the guide rod (31) and the corresponding support rod (4) are movably connected by a universal joint (32).

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