Refining and stretching mechanism for chinlon POY (pre-oriented yarn) production
By using heating tubes and a drive motor in the production of nylon POY, the problem of uneven heating between the heating roller and the fiber was solved, achieving uniform heating of the fiber surface and improving the heating and protective effects.
Patent Information
- Application Number
- CN202520507896.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-21
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-21
AI Technical Summary
In the existing technology, the heating roller of nylon POY fiber is partially in contact with the fiber for heating, which makes it difficult to achieve uniform heating and results in unsatisfactory heating effect.
The heating method uses a heating tube. Hot air is generated by a hot air blower and sent into the outer jacket through a connecting pipe. The heating tube is rotated by a drive motor, so that the hot air is blown evenly onto the fiber surface to achieve uniform heating.
It improves the heating uniformity and heating effect of nylon POY fibers and reduces the occurrence of fiber breakage.
Smart Images

Figure CN223921644U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of nylon POY production technology, specifically a fine stretching mechanism for nylon POY production. Background Technology
[0002] Nylon POY is an incompletely drawn chemical fiber filament produced by high-speed spinning (3000-4500m / min). Its orientation degree is between that of undrawn yarn (UDY) and fully drawn yarn (FDY). It needs to be refined by a drawing mechanism. In the existing technology, the drawing mechanism uses a heating roller to heat the nylon POY fiber. However, the heating roller is partially in contact with the fiber, making it difficult to heat evenly, resulting in an unsatisfactory heating effect.
[0003] For example, patent publication number CN213327959U describes a nylon spinning and stretching structure, including a hollow mounting block. A threaded rod is rotatably connected to the inner sidewall of the mounting block via bearings. A first threaded sleeve is fitted onto the outer surface of the threaded rod. A movable plate is fixedly connected to the upper surface of the first threaded sleeve. A fixed plate is fixedly connected to the upper surface of the mounting block. Both the movable plate and the fixed plate have threaded rods rotatably connected to their outer surfaces via bearings. In this nylon spinning and stretching structure, rotating the threaded shafts causes two threaded shafts to rotate synchronously under the action of a chain, causing two second threaded sleeves to drive telescopic rods to move up and down. The telescopic rods, through the mounting block, drive a movable heating roller to move up and down, adjusting the distance between the movable and fixed heating rollers. This ensures the heating rollers can stably adhere to the nylon, guaranteeing uniform heating and reducing nylon breakage. However, this structure suffers from the problem that while heating the nylon POY fiber using a heating roller, the partial contact between the heating roller and the fiber makes uniform heating difficult, resulting in an unsatisfactory heating effect. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a refining and stretching mechanism for nylon POY production, which solves the problem that heating nylon POY fibers using heating rollers results in partial contact heating between the heating rollers and the fibers, making it difficult to achieve uniform heating and resulting in an unsatisfactory heating effect.
[0005] To achieve the above objectives, this utility model is implemented through the following technical solution: a refining and stretching mechanism for nylon POY production, comprising a base, a rotating roller at the top of the base, a heating mechanism on one side of the rotating roller, a central control panel on the base, and a protective mechanism on the central control panel;
[0006] The heating mechanism includes a support frame, a hot air blower at the bottom of the support frame, multiple connecting pipes at the top of the hot air blower, heating seats at the top of each connecting pipe, mounting plates fixedly connected to both sides of the heating seats, a heating tube rotatably connected inside the heating seats, multiple air outlets on the inner wall of the heating tube, a limit ring fixedly connected to the outer surface of the heating tube, multiple air inlets on the limit ring, an outer sleeve rotatably connected to the outside of the limit ring, a driven gear fixedly connected to one end of the heating tube, a driving gear on one side of the driven gear, and a drive motor fixedly connected to the end of the driving gear.
[0007] Preferably, the support frame is fixedly installed on the top of the base, and the support frame is positioned between the two rotating rollers, so that the two rotating rollers can heat the nylon POY fibers when stretching them.
[0008] Preferably, one end of the connecting pipe is connected to a hot air blower, and the other end of the connecting pipe passes through the heating base and is connected to the outer jacket, so that hot air can be sent into the interior of the outer jacket by the hot air blower.
[0009] Preferably, the mounting plate is provided with multiple mounting bolts, and the heating seat is detachably connected to the support frame through the mounting plate and mounting bolts, which makes it easy to install and remove the heating seat.
[0010] Preferably, the outer jacket is fixedly installed inside the heating base, and the outer jacket is connected to the air outlet through the air inlet, so that the hot air in the outer jacket can pass through the air inlet and be discharged through the air outlet.
[0011] Preferably, the driving gear meshes with the driven gear, and the output shaft end of the drive motor is connected to the heating tube through the driving gear and the driven gear, so that the drive motor can drive the heating tube to rotate, thereby enabling uniform heating of the fibers.
[0012] Preferably, the protective mechanism includes a protective cover, one end of which is provided with a hinge. The one end of the protective cover is rotatably connected to the center console via the hinge. A fixed magnet is fixedly connected to the end of the protective cover away from the hinge. A handle is fixedly connected to the protective cover, so as to facilitate the protection of the operation buttons on the center console.
[0013] This invention provides a refining and stretching mechanism for nylon (POY) production. Compared with the prior art, it has the following advantages:
[0014] 1. The fine stretching mechanism for nylon POY production uses a motor to drive the heating tube as the nylon POY fibers pass through it. During this process, a hot air blower generates hot air and sends it into the outer casing through a connecting pipe. The hot air enters the heating tube through the air inlet and is then discharged through the air outlet, blowing onto the fiber surface. This ensures that the fiber surface is heated evenly and fully, improving the heating effect.
[0015] 2. The fine stretching mechanism for POY production uses a handle to rotate, which in turn rotates the protective cover. The cover is then attached to the control panel using a magnet, thus protecting the control buttons and improving the protection effect. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the heating mechanism structure of this utility model;
[0018] Figure 3 This is a schematic diagram of the heating base structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the protective mechanism structure of this utility model.
[0020] In the diagram: 1. Base; 2. Heating mechanism; 201. Support frame; 202. Hot air blower; 203. Connecting pipe; 204. Heating seat; 205. Heating tube; 206. Air outlet; 207. Limiting ring; 208. Air inlet; 209. Outer casing; 210. Driven gear; 211. Drive gear; 212. Drive motor; 213. Mounting plate; 3. Rotating roller; 4. Protective mechanism; 401. Protective cover; 402. Hinge; 403. Fixing magnet; 404. Handle; 5. Central control panel. Detailed Implementation
[0021] 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.
[0022] Please see Figures 1-3This utility model provides a technical solution: a fine stretching mechanism for nylon POY production, including a base 1, a rotating roller 3 on the top of the base 1, which can stretch nylon POY, a heating mechanism 2 on one side of the rotating roller 3, a central control table 5 on the base 1, and a protective mechanism 4 on the central control table 5. The heating mechanism 2 can be used to uniformly heat the nylon POY fibers and improve the heating effect.
[0023] The heating mechanism 2 includes a support frame 201, which is fixedly installed on the top of the base 1 and positioned between two rotating rollers 3, allowing the two rollers 3 to heat the nylon POY fibers during stretching. A hot air blower 202 is located at the bottom of the support frame 201, and multiple connecting pipes 203 are located at the top of the hot air blower 202. Each connecting pipe 203 is connected to a heating seat 204, and mounting plates 213 are fixedly connected to both sides of the heating seat 204. Multiple mounting bolts are provided on the mounting plates 213. 04 is detachably connected to the support frame 201 via mounting plate 213 and mounting bolts, allowing for easy installation and removal of the heating base 204. A heating tube 205 is rotatably connected inside the heating base 204. A bearing is provided between the heating tube 205 and the inner wall of the heating base 204, making the heating tube 205 easier to rotate. Multiple air outlets 206 are provided on the inner wall of the heating tube 205. A limit ring 207 is fixedly connected to the outer surface of the heating tube 205. Multiple air inlets 208 are provided on the limit ring 207. The outer casing 209 is rotatably connected, allowing hot air to be discharged from the air outlet 206 when the heating tube 205 is rotating. One end of the connecting pipe 203 is connected to the hot air blower 202, and the other end of the connecting pipe 203 passes through the heating base 204 and is connected to the outer casing 209, allowing the hot air blower 202 to send hot air into the outer casing 209. The outer casing 209 is fixedly installed inside the heating base 204, and the outer casing 209 is connected to the air outlet 206 through the air inlet 208, allowing hot air in the outer casing 209 to pass through the air inlet. Air is discharged from the outlet 208 through the air outlet 206. One end of the heating tube 205 is fixedly connected to a driven gear 210. A driving gear 211 is provided on one side of the driven gear 210. A drive motor 212 is fixedly connected to the end of the driving gear 211. The driving gear 211 meshes with the driven gear 210. The output shaft end of the drive motor 212 is connected to the heating tube 205 through the driving gear 211 and the driven gear 210, so that the drive motor 212 can drive the heating tube 205 to rotate, thereby enabling uniform heating of the fibers.
[0024] Please see Figure 1 and Figure 4The protective mechanism 4 includes a protective cover 401. One end of the protective cover 401 is provided with a hinge 402. One end of the protective cover 401 is rotatably connected to the central control panel 5 through the hinge 402. A fixing magnet 403 is fixedly connected to the end of the protective cover 401 away from the hinge 402. A handle 404 is fixedly connected to the protective cover 401. By rotating the handle 404, the protective cover 401 will rotate and be attracted and fixed to the central control panel 5 by the fixing magnet 403, covering the operation buttons on the central control panel 5, so as to facilitate the protection of the operation buttons on the central control panel 5 and improve the protection effect.
[0025] During operation, nylon POY fibers pass through the heating tube 205. The drive motor 212 drives the drive gear 211 to rotate, which in turn drives the driven gear 210 to rotate. The driven gear 210 then drives the heating tube 205 to rotate. During this process, the hot air blower 202 generates hot air, which is then sent into the outer jacket 209 through the connecting pipe 203. The hot air enters the heating tube 205 through the air inlet 208 and is then discharged through the air outlet 206, blowing onto the fiber surface. This ensures that the fiber surface is heated evenly and fully, improving the heating effect.
[0026] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.
Claims
1. A fine drawing mechanism for producing polyamide POY, comprising a base (1), characterized in that: The base (1) top is equipped with a rotating roller (3), one side of the rotating roller (3) is equipped with a heating mechanism (2), the base (1) is equipped with a center console (5), and the center console (5) is equipped with a protection mechanism (4); The heating mechanism (2) comprises a support frame (201), the bottom of the support frame (201) is equipped with a hot air blower (202), the top of the hot air blower (202) is equipped with a plurality of connecting pipes (203), the top of each of the plurality of connecting pipes (203) is connected with a heating seat (204), the two sides of the heating seat (204) are fixedly connected with mounting plates (213), the heating seat (204) is rotatably connected with a heating pipe (205) inside, a plurality of air outlet holes (206) are formed in the inner wall of the heating pipe (205), the outer surface of the heating pipe (205) is fixedly connected with a limiting ring (207), a plurality of air inlets (208) are formed in the limiting ring (207), the limiting ring (207) is rotatably connected with an outer sleeve (209), one end of the heating pipe (205) is fixedly connected with a driven gear (210), one side of the driven gear (210) is equipped with a driving gear (211), and the end of the driving gear (211) is fixedly connected with a driving motor (212).
2. The attenuation stretching mechanism for producing a polyethylene terephthalate (PET) pre-oriented yarn (POY) according to claim 1, wherein: The support frame (201) is fixedly installed on the top of the base (1), and the support frame (201) is arranged between the two rotating rollers (3).
3. The attenuation stretching mechanism for producing polyethylene terephthalate (PET) pre-oriented yarn (POY) according to claim 1, wherein: One end of the connecting pipe (203) is connected with the hot air blower (202), and the other end of the connecting pipe (203) penetrates the heating seat (204) and is connected with the outer sleeve (209).
4. The attenuation stretching mechanism for producing a chinlon POY according to claim 1, wherein: A plurality of mounting bolts are arranged on the mounting plate (213), and the heating seat (204) is detachably connected with the support frame (201) through the mounting plate (213) and the mounting bolts.
5. The attenuation stretching mechanism for producing a chinlon POY according to claim 1, wherein: The outer sleeve (209) is fixedly installed inside the heating seat (204), and the outer sleeve (209) is connected with the air outlet hole (206) through the air inlet (208).
6. The attenuation stretching mechanism for producing a chinlon POY according to claim 1, wherein: The driving gear (211) is engaged with the driven gear (210), and the output shaft end of the driving motor (212) is drivingly connected with the heating pipe (205) through the driving gear (211) and the driven gear (210).
7. The attenuation stretching mechanism for producing a chinlon POY according to claim 1, wherein: The protection mechanism (4) comprises a protective cover (401), one end of the protective cover (401) is equipped with a hinge (402), and the protective cover (401) is rotatably connected with the center console (5) through the hinge (402).
8. The attenuation stretching mechanism for producing a chinlon POY according to claim 7, wherein: The end of the protective cover (401) away from the hinge (402) is fixedly connected with a fixed magnet (403), and the protective cover (401) is fixedly connected with a handle (404).
Citation Information
Patent Citations
Nylon spinning stretching structure
CN213327959U