Yarn guide mechanism of two-for-one twister

Abstract

The utility model relates to the technical field of textile equipment, in particular to a yarn guide mechanism of a two-for-one twister, which comprises a fixing frame, a mounting component is fixed at the bottom of the fixing frame, a swing arm is rotatably connected to the top of the fixing frame through a rotating shaft, and guide wheels are rotatably connected to side walls of two ends of the swing arm. A tensioning assembly in sliding connection with the swing arm is further fixed to the fixing frame. The tensioning assembly comprises a threaded column fixed to the fixing frame, an adjusting nut is connected to the outer wall of the threaded column in a threaded mode, a pressing piece and a spring which are arranged on the threaded column in a sleeving mode are arranged above the adjusting nut, the top of the threaded column is sleeved with a connecting frame, and a sliding block is fixed to the top of the connecting frame and arranged in a sliding hole formed in the swing arm in a sliding mode. According to the yarn guide mechanism of the two-for-one twister, the purpose that the tension applied to the yarn by the spring is adjustable can be achieved by moving the position of the adjusting nut through tools such as a wrench, and the corresponding tension can be used according to different yarn materials.

Description

A yarn guiding mechanism for a doubling twister Technical Field

[0001] This utility model relates to the field of textile equipment technology, specifically to a yarn guiding mechanism for a doubling twister. Background Technology

[0002] The doubling twister is an important twisting device in the textile industry. It can achieve two twists in one revolution, significantly increasing twisting efficiency compared to traditional twisting equipment. During the operation of the doubling twister, the yarn guiding mechanism plays a crucial role. It is responsible for accurately guiding the yarn from the feeding device to the spindle for twisting and then smoothly drawing the yarn out for subsequent processing. To ensure the yarn is taut during twisting, components such as tension springs are used to provide tension. However, different yarn materials require different tensions, and tension springs can only provide a fixed tension, resulting in the inability to adjust the tension and the lack of a display of the tension value during adjustment, leading to significant adjustment errors. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this utility model provides a yarn guiding mechanism for a doubling machine, which solves the technical problem that the tension of existing yarn guiding structures cannot be adjusted.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a yarn guiding mechanism for a doubling machine, including a fixed frame, an installation component fixed at the bottom of the fixed frame, a swing arm rotatably connected to the top of the fixed frame via a rotating shaft, guide wheels rotatably connected to the side walls at both ends of the swing arm, and a tensioning component slidably connected to the swing arm fixed on the fixed frame.

[0005] The tensioning assembly includes a threaded column fixed on a fixed frame. An adjusting nut is threaded onto the outer wall of the threaded column. Above the adjusting nut, a pressure plate and a spring are sleeved on the threaded column. A connecting frame is sleeved on the top of the threaded column. A slider is fixed on the top of the connecting frame. The slider is slidably disposed in a sliding hole opened on the swing arm.

[0006] Preferably, the mounting assembly includes a lower support fixed to a fixed frame, an upper support rotatably connected to the lower support, a movable shaft rotatably connected to one end of the lower support, a pressure handle fixed on the movable shaft, and a slot for engaging with the pressure handle at one end of the upper support.

[0007] Preferably, the guide wheel has multiple annular positioning grooves.

[0008] Preferably, two fixing posts are fixed on the side wall of the swing arm, and brush bristles are provided on the opposite surfaces of the two fixing posts.

[0009] Preferably, the top of the threaded post has a protrusion.

[0010] Preferably, a mechanical pressure gauge is installed on the side wall of the fixed frame, and the probe of the mechanical pressure gauge abuts against the bottom of the swing arm.

[0011] By employing the above technical solution, this utility model provides a yarn guiding mechanism for a doubling twister, which has at least the following beneficial effects:

[0012] 1. The yarn guiding mechanism of this twisting machine, by setting a tensioning component, uses a spring to provide an upward thrust to the connecting frame and the slider, thereby providing tension to the yarn. Under the action of the adjusting nut, the position of the adjusting nut can be moved by tools such as a wrench, thereby achieving the purpose of adjusting the tension applied to the yarn by the spring, and the corresponding tension can be used according to different yarn materials.

[0013] 2. The yarn guiding mechanism of this twisting machine is equipped with a mechanical pressure gauge. When the tensioning component applies an upward tensioning force to one end of the swing arm, the other end of the swing arm can apply a downward pressure to the mechanical pressure gauge, thereby achieving accurate display of the tension force and facilitating more precise adjustment. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0015] Figure 1 is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 is a schematic diagram of the installation component of this utility model;

[0017] Figure 3 is a schematic diagram of the guide wheel of this utility model;

[0018] Figure label:

[0019] 1. Fixing frame; 2. Mounting assembly; 201. Lower support; 202. Upper support; 2021. Slot; 203. Movable shaft; 204. Pressure handle; 3. Rotating shaft; 4. Swing arm; 401. Sliding hole; 5. Guide wheel; 6. Tensioning assembly; 601. Threaded post; 602. Adjusting nut; 603. Pressure plate; 604. Spring; 605. Connecting frame; 606. Slider; 7. Fixing post; 8. Brush bristles; 9. Mechanical pressure gauge. Detailed Implementation

[0020] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Early twisting machines used relatively simple yarn guiding mechanisms, such as fixed guide ceramic teeth. While these mechanisms were simple and inexpensive, they had several drawbacks. Firstly, their tension adjustment capabilities were limited, making precise tension control difficult for different yarn types and processing requirements. This easily led to uneven tension during twisting, affecting yarn quality and causing problems like fuzzing and uneven strength. Secondly, the simple guide ceramic teeth resulted in significant friction between the guide ceramic teeth and the yarn, easily causing yarn wear. This wear was particularly problematic for high-grade fiber yarns, severely reducing yarn quality and even causing breakage, thus impacting production efficiency.

[0022] Example 1:

[0023] Based on the technical defects of existing technologies where the tension cannot be adjusted, please refer to Figures 1-3. This embodiment provides a yarn guiding mechanism for a twisting machine. By moving the position of the adjusting nut 602, the tension applied to the yarn by the spring 604 can be adjusted. The corresponding tension can be used according to the different yarn materials. The yarn guiding mechanism includes a fixed frame 1. The bottom of the fixed frame 1 is fixed with an installation component 2. The top of the fixed frame 1 is rotatably connected to a swing arm 4 via a rotating shaft 3. Guide wheels 5 are rotatably connected to the side walls at both ends of the swing arm 4. A tensioning component 6 is also fixed on the fixed frame 1 and slidably connected to the swing arm 4. First, the yarn is passed around the two sets of guide wheels 5. Then, during use, the tensioning force of the tensioning component 6 on the swing arm 4 is used to apply tension to the yarn at both ends of the swing arm 4, so that the yarn can be kept taut.

[0024] Existing yarn guiding mechanisms generally use tension springs to apply tension. However, tension springs can only provide a fixed tension, resulting in the inability to adjust the tension. To address this issue, please refer to Figure 2. The tensioning assembly 6 includes a threaded post 601 fixed to the fixed frame 1. An adjusting nut 602 is threaded onto the outer wall of the threaded post 601. Above the adjusting nut 602, a pressure plate 603 and a spring 604 are sleeved on the threaded post 601. A connecting frame 605 is sleeved on the top of the threaded post 601. A slider 606 is fixed on the top of the connecting frame 605. The slider 606 is slidably disposed within a sliding hole 401 opened on the swing arm 4. The spring 604 is used to control the tensioning of the connecting frame 601. 05 and slider 606 provide an upward thrust, thereby providing tension to the yarn. Under the action of adjusting nut 602, the position of adjusting nut 602 can be moved by using tools such as wrenches. When adjusting nut 602 is moved upward, the tensioning nut further compresses spring 604 through pressure plate 603. At this time, the tensioning thrust exerted by spring 604 on swing arm 4 will increase, thereby increasing the tension to the yarn. Conversely, when adjusting nut 602 is moved downward, the tensioning nut further relaxes spring 604 through pressure plate 603. At this time, the tensioning thrust exerted by spring 604 on swing arm 4 will decrease, thereby reducing the tension to the yarn.

[0025] In actual use, this yarn guiding structure needs to be installed on the twisting machine. Therefore, please refer to Figure 2. The installation component 2 includes a lower support 201 fixed to the fixed frame 1, an upper support 202 rotatably connected to the lower support 201, a movable shaft 203 rotatably connected to one end of the lower support 201, a pressure handle 204 fixed on the movable shaft 203, and a slot 2021 for engaging with the pressure handle 204 at one end of the upper support 202. During installation, the lower support 201 and the upper support 202 are fitted onto the crossbar of the twisting machine, and then the lower support 201 and the upper support 202 are closed. The pressure handle 204 is rotated to fix the upper support 202. This has the advantage of easy assembly and disassembly.

[0026] Furthermore, multiple annular positioning grooves are provided on the guide wheel 5; by setting multiple positioning grooves, multiple yarns can be guided.

[0027] Since yarn inevitably picks up dust or other impurities during transport, which can affect the quality of subsequent twisting, two fixed posts 7 are fixed on the side wall of the swing arm 4, and brush bristles 8 are provided on the opposite surfaces of the two fixed posts 7. When the yarn passes between the two sets of brush bristles 8, the dust or impurities adhering to the yarn can be wiped away, which can improve the quality of subsequent yarn twisting.

[0028] Furthermore, a protrusion is provided at the top of the threaded post 601; the protrusion prevents the connecting bracket 605 from disengaging from the threaded post 601.

[0029] Even with an adjustable yarn guide structure, the tension force cannot be displayed during adjustment, resulting in a large adjustment error. To address this issue, a mechanical pressure gauge 9 is installed on the side wall of the fixed frame 1, with the probe of the mechanical pressure gauge 9 contacting the bottom of the swing arm. When the tensioning assembly 6 applies an upward tensioning thrust to one end of the swing arm 4, the other end of the swing arm 4 can apply downward pressure to the mechanical pressure gauge 9, thereby achieving accurate display of the tension force and facilitating more precise adjustment.

[0030] It should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A yarn guiding mechanism for a doubling twister, comprising a fixed frame (1), characterized in that: The bottom of the fixed frame (1) is fixed with an installation component (2), and the top of the fixed frame (1) is rotatably connected with a swing arm (4) via a rotating shaft (3). Guide wheels (5) are rotatably connected to the side walls at both ends of the swing arm (4). The fixed frame (1) is also fixed with a tensioning component (6) that is slidably connected to the swing arm (4). The tensioning component (6) includes a threaded column (601) fixed on the fixed frame (1). An adjusting nut (602) is threadedly connected to the outer wall of the threaded column (601). Above the adjusting nut (602) are a pressure plate (603) and a spring (604) sleeved on the threaded column (601). A connecting frame (605) is sleeved on the top of the threaded column (601). A slider (606) is fixed on the top of the connecting frame (605). The slider (606) is slidably disposed in a sliding hole (401) opened on the swing arm (4).

2. The yarn guiding mechanism of the doubling twister according to claim 1, characterized in that: The mounting assembly (2) includes a lower support (201) fixed to the fixed frame (1), an upper support (202) rotatably connected to the lower support (201), a movable shaft (203) rotatably connected to one end of the lower support (201), a pressure handle (204) fixed on the movable shaft (203), and a slot (2021) for engaging with the pressure handle (204) at one end of the upper support (202).

3. The yarn guiding mechanism of the doubling twister according to claim 1, characterized in that: The guide wheel (5) has multiple annular positioning grooves.

4. The yarn guiding mechanism of the doubling twister according to claim 1, characterized in that: Two fixing posts (7) are fixed on the side wall of the swing arm (4), and brush bristles (8) are provided on the opposite surfaces of the two fixing posts (7).

5. The yarn guiding mechanism of the doubling twister according to claim 1, characterized in that: The top of the threaded post (601) is provided with a protrusion.

6. The yarn guiding mechanism of the doubling twister according to claim 1, characterized in that: A mechanical pressure gauge (9) is installed on the side wall of the fixed frame (1), and the probe of the mechanical pressure gauge (9) abuts against the bottom of the swing arm.

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