A PET fiber twisting device

Abstract

This utility model relates to the field of fiber twisting technology, specifically a PET fiber twisting device, including a frame, a drive mechanism and a base fixedly mounted on the frame, a twisting mechanism rotatably mounted on the base, the twisting mechanism including a steel ring and a mandrel, the steel ring fixedly connected to the base, a twisting ring slidably mounted on the steel ring, the mandrel fixedly mounted on the drive mechanism, the mandrel rotatably connected to the base, a yarn bobbin sleeved on the mandrel, the inner wall of the yarn bobbin having several protrusions fixedly connected in an annular shape at equal intervals, the protrusions engaging with the mandrel; by engaging the protrusions with the yarn bobbin, it is ensured that the yarn bobbin rotates synchronously with the mandrel, avoiding slippage causing interruption of material supply; the steel ring provides a stable sliding track for the twisting ring, and together with the rotational power of the mandrel, ensures that the twisting ring is always subjected to uniform torsional force during the twisting process, avoiding local undertwist or overtwist due to trajectory deviation.

Description

Technical Field

[0001] This utility model relates to a twisting device, specifically a PET fiber twisting device, belonging to the field of fiber twisting technology. Background Technology

[0002] PET fibers are smooth and have weak cohesion. If loose fibers are directly made into vaporizers, they are prone to falling off due to external force when inserted into mosquito repellent bottles or used for a long time. This not only affects the integrity of the vaporizer but may also contaminate the mosquito repellent liquid. By twisting PET fibers with a twisting machine, the twisting force can make the fibers intertwine and interlock with each other, forming a spiral structure similar to twisting hemp rope, which can significantly improve the overall cohesion of the fiber bundle.

[0003] However, the yarn bobbin and mandrel of the twisting machine mostly rely on frictional transmission and are usually directly placed on the mandrel. When the tension of the fiber bundle changes, relative sliding is likely to occur, causing the yarn bobbin speed and the mandrel to be out of sync, resulting in an imbalance between the unwinding speed and the twisting speed of the fiber bundle. Moreover, during high-speed twisting, the twisting ring is prone to deviate from the preset trajectory, resulting in uneven torsional force on different parts of the PET fiber bundle. Utility Model Content

[0004] The purpose of this invention is to provide a PET fiber twisting device to solve the above problems. The device uses a protrusion to engage with the yarn bobbin, ensuring that the yarn bobbin rotates synchronously with the mandrel and avoiding supply interruption caused by slippage. The steel ring provides a stable sliding track for the twisting ring, which, together with the rotational power of the mandrel, ensures that the twisting ring is always subjected to uniform torsional force during the twisting process, avoiding local insufficient twist or overtwist due to track deviation.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a PET fiber twisting device, comprising a frame, a drive mechanism and a base fixedly mounted on the frame, a twisting mechanism rotatably mounted on the base, the twisting mechanism comprising a steel ring and a mandrel, a steel ring fixedly connected to the base, a twisting ring slidably mounted on the steel ring, a mandrel fixedly mounted on the drive mechanism, the mandrel being rotatably connected to the base, a yarn bobbin sleeved on the mandrel, and a plurality of protrusions fixedly connected in an annular shape at equal intervals on the inner wall of the yarn bobbin, the protrusions being engaged with the mandrel.

[0006] Preferably, the bottom end of the yarn tube is rotatably connected to the base, and the diameter of the end of the yarn tube away from the base is larger than the diameter of the end of the yarn tube closer to the base.

[0007] Preferably, the twisting ring is located at the top of the steel collar, and the inner wall and protrusion of the twisting ring are both arranged in an arc-shaped structure.

[0008] Preferably, the drive mechanism includes a second guide wheel and a rotating shaft. The rotating shaft is fixedly connected to the spindle, and the second guide wheel is fixedly connected to the rotating shaft. A motor is fixedly installed on the frame near the base. The output shaft of the motor is fixedly connected to a first guide wheel, and belts are sleeved on the first guide wheel and the second guide wheel.

[0009] Preferably, both the first guide wheel and the second guide wheel are rotatably connected to the frame, and the diameter of the first guide wheel is larger than the diameter of the second guide wheel.

[0010] Preferably, the frame is fixed with an installation mechanism near the top of the yarn tube. The installation mechanism includes a fixing frame and a positioning block. The fixing frame is installed on the frame, and the positioning block is fixedly connected to the fixing frame by bolts. A yarn guide hook is fixedly installed on the positioning block.

[0011] Preferably, a yarn guide mechanism is installed on the frame near the top of the yarn guide hook. The yarn guide mechanism includes a long rod and a yarn guide pulley. The long rod is fixedly connected to the frame, and the yarn guide pulley is rotatably connected to the long rod.

[0012] Preferably, the yarn guide hook is located at the top of the yarn tube, and the yarn guide pulley is arranged in an "I" shape.

[0013] The beneficial effects of this utility model are as follows: the yarn bobbin pulls and conveys the fiber bundle, the twisting ring slides along the steel ring to apply a uniform torsional force, and the yarn bobbin achieves uniform fiber bundle distribution due to the diameter difference; the yarn bobbin and the mandrel rotate synchronously, the traction force and the conveying speed are matched, avoiding excessive stretching or loosening of the fiber bundle and ensuring the continuity of the twisting process; the steel ring provides a stable sliding track for the twisting ring, and the rotation of the mandrel, together with the twisting ring, causes the twisting ring to move along a fixed trajectory, applying a stable and uniform twisting force to the PET fiber, ensuring a consistent fiber twist distribution and avoiding local over-twisting or insufficient twist; the diameter of the top end of the yarn bobbin is larger than that of the bottom end, guiding the fiber bundle distribution, avoiding overlapping and stacking, and ensuring that the yarn bobbin is fully and neatly wound; the protrusions are distributed in annular and equidistant manner to ensure that the yarn bobbin and the mandrel are subjected to uniform force, avoiding component deformation caused by local stress concentration, while the locking structure is stable, preventing the yarn bobbin from slipping and ensuring that the twisting process is continuous and uninterrupted. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the yarn bobbin and the mandrel of this utility model.

[0016] Figure 3 This is a schematic diagram of the connection structure between the base and the steel collar of this utility model;

[0017] Figure 4This is a schematic diagram of the connection structure between the frame and the motor of this utility model;

[0018] Figure 5 This is a schematic diagram of the connection structure between the base and the steel collar of this utility model.

[0019] In the diagram: 1. Frame; 2. Wire guiding mechanism; 201. Long rod; 202. Wire guiding pulley; 3. Mounting mechanism; 301. Fixing frame; 302. Positioning block; 303. Wire guiding hook; 4. Drive mechanism; 401. Motor; 402. First guide wheel; 403. Belt; 404. Second guide wheel; 405. Rotating shaft; 5. Base; 6. Twisting mechanism; 601. Steel ring; 602. Twisting ring; 603. Yarn cylinder; 604. Mandrel; 605. Protrusion. 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] Please see Figures 1-5 As shown, a PET fiber twisting device includes a frame 1, a drive mechanism 4 and a base 5 fixedly mounted on the frame 1, and a twisting mechanism 6 rotatably mounted on the base 5. The twisting mechanism 6 includes a steel ring 601 and a mandrel 604. The steel ring 601 is fixedly connected to the base 5, and a twisting ring 602 is slidably mounted on the steel ring 601. The mandrel 604 is fixedly mounted on the drive mechanism 4. When the mandrel 604 rotates, it drives the yarn bobbin 603 to rotate synchronously. The yarn bobbin 603 generates a traction force on the fiber bundle through rotation, causing the fiber bundle to be continuously conveyed along the path of the guide pulley 202, the guide hook 303, and the twisting ring 602. The mandrel 604 is rotatably connected to the base 5, and the yarn bobbin 603 is sleeved on the mandrel 604. The twisting ring 602 is under the traction force of the fiber bundle. Under the synergistic effect of the rotation of the mandrel 604, the yarn bundle slides along the annular track on the inner wall of the ring 601, applying a uniform torsional force to the fiber bundle; the inner wall of the yarn tube 603 is fixedly connected with several protrusions 605 at equal intervals in an annular shape, and the protrusions 605 are engaged with the mandrel 604. The twisted fiber bundle is continuously wound onto the yarn tube 603. Because the diameter of the top end of the yarn tube 603 is larger than that of the bottom end, the fiber bundle can be evenly distributed during the winding process, avoiding overlap and accumulation; the bottom end of the yarn tube 603 is rotatably connected to the base 5, and the diameter of the end of the yarn tube 603 away from the base 5 is larger than the diameter of the end of the yarn tube 603 close to the base 5. The twisting ring 602 is located on the top of the ring 601, and the inner wall of the twisting ring 602 and the protrusions 605 are both set with an arc surface structure.

[0022] As a technical optimization of this utility model, the drive mechanism 4 includes a second guide wheel 404 and a rotating shaft 405. The rotating shaft 405 is fixedly connected to the spindle 604, and the second guide wheel 404 is fixedly connected to the rotating shaft 405. A motor 401 is fixedly installed on the frame 1 near the base 5. The output shaft of the motor 401 is fixedly connected to a first guide wheel 402. A belt 403 is sleeved on the first guide wheel 402 and the second guide wheel 404. The first guide wheel 402 and the second guide wheel 404 are rotatably connected to the frame 1. The output shaft of the motor 401 drives the first guide wheel 402 to rotate, and transmits power to the second guide wheel 404 through the belt 403, thereby driving the rotating shaft 405 and the spindle 604 to rotate. The diameter of the first guide wheel 402 is larger than the diameter of the second guide wheel 404.

[0023] As a technical optimization of this utility model, a mounting mechanism 3 is fixed at the part of the frame 1 near the top of the yarn tube 603. The mounting mechanism 3 includes a fixing frame 301 and a positioning block 302. The fixing frame 301 is installed on the frame 1, and the positioning block 302 is fixedly connected to the fixing frame 301 by bolts. A yarn guide hook 303 is fixedly installed on the positioning block 302. The fiber bundle passing through the yarn guide pulley 202 is conveyed downward and passes through the yarn guide hook 303 installed on the positioning block 302. The arc-shaped structure of the yarn guide hook 303 gathers the fiber bundle, ensuring that the fiber bundle enters the next stage in a regular bundle shape.

[0024] As a technical optimization of this utility model, a guide wire mechanism 2 is installed on the part of the frame 1 near the top of the guide hook 303. The guide wire mechanism 2 includes a long rod 201 and a guide pulley 202. The long rod 201 is fixedly connected to the frame 1, and the guide pulley 202 is rotatably connected to the long rod 201. The guide hook 303 is located at the top of the yarn tube 603. The free end of the fiber bundle passes through the guide pulley 202 installed on the long rod 201. The guide pulley 202 with the "I" shape structure can constrain the direction of the fiber bundle and prevent the fiber bundle from deviating.

[0025] In use, this invention first takes the free end of the PET fiber bundle to be twisted and inserts it through the guide pulley 202 mounted on the long rod 201. The guide pulley 202, with its "I"-shaped structure, constrains the direction of the fiber bundle, preventing it from shifting. Next, the fiber bundle passing through the guide pulley 202 is conveyed downwards, passing through the guide hook 303 mounted on the positioning block 302. The arc-shaped structure of the guide hook 303 converges the fiber bundle, ensuring it enters the next stage in a regular bundle shape. The fiber bundle then flows from the guide pulley... After hook 303 is pulled out, it continues to be threaded downwards into twist ring 602. The inner wall of twist ring 602 has an arc-shaped structure, which can reduce the friction of the fiber bundle, thereby keeping the fiber bundle at the center of twist ring 602 and concentric with the rail of steel ring 601. Finally, pull the free end of the fiber bundle that has passed through twist ring 602 to the starting winding position of yarn bobbin 603, and manually wind it 2 to 3 times along the axis of yarn bobbin 603. When winding, keep the fiber bundle tightly against the bobbin to avoid loosening and causing bulges during subsequent winding. Turn on motor 401. The output shaft of motor 401 drives the first guide wheel 402 to rotate, and transmits the power to the second guide wheel 404 through belt 403, thereby driving the rotating shaft 405 and the spindle 604 to rotate. Since the diameter of the first guide wheel 402 is larger than that of the second guide wheel 404, the rotational speed of the spindle 604 can be increased. When the spindle 604 rotates, it drives the yarn bobbin 603 to rotate synchronously. The yarn bobbin 603 generates traction force on the fiber bundle through rotation, causing the fiber bundle to be continuously transported along the path of the yarn guide pulley 202, the yarn guide hook 303, and the twisting ring 602. Under the combined action of the traction force of the fiber bundle and the rotation of the mandrel 604, the loop 602 slides along the annular track on the inner wall of the ring 601, applying a uniform torsional force to the fiber bundle. The twisted fiber bundle is continuously wound onto the yarn bobbin 603. Because the diameter of the top end of the yarn bobbin 603 is larger than that of the bottom end, the fiber bundle can be evenly distributed during the winding process, avoiding overlapping and accumulation. When the yarn bobbin 603 is wound to the preset amount, the motor 401 is turned off. After the equipment has completely stopped, the fiber bundle is cut, and the yarn bobbin 603 is removed from the mandrel 604, thus completing one twisting operation.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A PET fiber twisting device comprising a frame (1), characterized in that: A drive mechanism (4) and a base (5) are fixedly installed on the frame (1). A twisting mechanism (6) is rotatably mounted on the base (5). The twisting mechanism (6) includes a steel ring (601) and a mandrel (604). The steel ring (601) is fixedly connected to the base (5). A twisting ring (602) is slidably mounted on the steel ring (601). The mandrel (604) is fixedly mounted on the drive mechanism (4). The mandrel (604) is rotatably connected to the base (5). A yarn bobbin (603) is sleeved on the mandrel (604). Several protrusions (605) are fixedly connected in a ring shape at equal intervals on the inner wall of the yarn bobbin (603). The protrusions (605) are engaged with the mandrel (604).

2. A PET fiber twisting device according to claim 1, characterized in that: The bottom end of the yarn tube (603) is rotatably connected to the base (5), and the diameter of the end of the yarn tube (603) away from the base (5) is greater than the diameter of the end of the yarn tube (603) close to the base (5).

3. A PET fiber twisting device according to claim 1, characterized in that: The twisting ring (602) is located at the top of the steel collar (601), and the inner wall of the twisting ring (602) and the protrusion (605) are both arranged in an arc-shaped structure.

4. A PET fiber twisting device according to claim 1, characterized in that: The drive mechanism (4) includes a second guide wheel (404) and a rotating shaft (405). The rotating shaft (405) is fixedly connected to the spindle (604), and the second guide wheel (404) is fixedly connected to the rotating shaft (405). A motor (401) is fixedly installed on the frame (1) near the base (5). The output shaft of the motor (401) is fixedly connected to a first guide wheel (402). A belt (403) is sleeved on the first guide wheel (402) and the second guide wheel (404).

5. A PET fiber twisting device according to claim 4, characterized in that: The first guide wheel (402) and the second guide wheel (404) are rotatably connected to the frame (1), and the diameter of the first guide wheel (402) is larger than the diameter of the second guide wheel (404).

6. A PET fiber twisting device according to claim 1, characterized in that: The frame (1) is fixed with an installation mechanism (3) near the top of the yarn tube (603). The installation mechanism (3) includes a fixing frame (301) and a positioning block (302). The fixing frame (301) is installed on the frame (1). The positioning block (302) is fixedly connected to the fixing frame (301) by bolts. The yarn guide hook (303) is fixedly installed on the positioning block (302).

7. A PET fiber twisting device according to claim 6, characterized in that: A guide wire mechanism (2) is installed on the frame (1) near the top of the guide hook (303). The guide wire mechanism (2) includes a long rod (201) and a guide pulley (202). The long rod (201) is fixedly connected to the frame (1), and the guide pulley (202) is rotatably connected to the long rod (201).

8. A PET fiber twisting device according to claim 7, characterized in that: The yarn guide hook (303) is located at the top of the yarn tube (603), and the yarn guide pulley (202) is arranged in an "I" shape.

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