Drafting mechanism for hollow fiber production

Abstract

The utility model relates to the technical field of hollow fiber production, and discloses a drafting mechanism for hollow fiber production, which comprises a rack, a drafting mechanism is arranged on one side of the top end of the rack, a guide mechanism is arranged on the other side of the top end of the rack, and the rack comprises two bases which are symmetrically arranged front and back. The drafting mechanism comprises a set of sliding frames fixedly connected with one side of the top end of the base, and the two sliding frames are symmetrically arranged. The high-precision motor and the driver are adopted, an advanced speed control system is matched, the driving motor is a servo motor, a high-precision speed monitoring and control mechanism is configured, the speed of the roller can be monitored in real time and subjected to feedback adjustment, the speed control precision can be improved, automatic adjustment and optimization of drafting parameters are achieved, and the production efficiency is improved. And stable performance of products in different batches is ensured.

Description

Technical Field

[0001] This utility model relates to the field of hollow fiber production technology, specifically to a drawing mechanism for hollow fiber production. Background Technology

[0002] Currently, the production of environmentally friendly polylactic acid hollow fibers requires a drawing mechanism for hollow fiber production. It is one of the key pieces of equipment in the hollow fiber production process. It can stretch the fiber by applying a certain tension to stretch the nascent fiber formed by the extrusion of spinning solution, so that the polymer chains in the fiber are aligned along the fiber axis, thereby improving the physical properties of the fiber such as strength and modulus.

[0003] The existing drawing mechanism for hollow fiber production still has the following problems when in use: it has certain problems in terms of fiber quality stability. That is, during the drawing process, when different batches are produced, due to the insufficient precision of the drawing parameters, fiber performance may fluctuate, which may easily lead to uneven fiber fineness and affect the consistency of product quality. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a drawing mechanism for hollow fiber production, which solves the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a drafting mechanism for hollow fiber production, comprising a frame, a drafting mechanism disposed on one side of the top of the frame, and a guiding mechanism disposed on the other side of the top of the frame. The frame includes two bases arranged symmetrically front to back. The drafting mechanism includes a set of slides fixedly connected to one side of the top of the bases. The set of slides consists of two slides arranged symmetrically. A fixed seat is fixedly connected between the two slides in the set, and a movable seat is slidably connected between the two slides in the set. Bearings are fixedly installed in both the fixed seat and the movable seat. The same drafting roller is fixedly connected to the inner rotating end of each pair of symmetrically arranged bearings. A drive motor is disposed at the front end of the two drafting rollers. The drive motor is a servo motor. A speed controller is fixedly connected to one side of the top of the two bases. The speed controller is located on the other side of the two drafting rollers, and a speed sensor is disposed on the top of the speed controller facing the two drafting rollers.

[0008] As a further improvement of this utility model: each end of the drive motor is fixedly connected to a connecting frame, and the rear end of the connecting frame is fixedly connected to a fixed seat or movable seat on its corresponding side.

[0009] As a further embodiment of this utility model: the outer annular wall of the stretching roller is fixedly connected with multiple anti-slip rubber strips at equal angles, multiple longitudinal beams are fixedly connected at equal intervals between the two bases, and an installation groove is provided between the upper and lower side walls of the other end of the base.

[0010] As a further embodiment of this utility model: an electric cylinder is provided directly above the movable seat, the movable end of the bottom output shaft of the electric cylinder is fixedly connected to the top of the movable seat on the corresponding side, and a fixed frame is fixedly connected to each end of the electric cylinder, and the fixed frame is fixedly connected to the slide on the corresponding side.

[0011] As a further embodiment of this utility model: the guiding mechanism includes a V-shaped frame disposed above the other end of the two bases, and three guide rollers are rotatably mounted between the two V-shaped frames in a V-shape. Two brackets are symmetrically fixedly connected to the bottom end of the V-shaped frame, and the bottom end of each bracket is fixedly connected to the base on its corresponding side.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. In this utility model, by adopting a high-precision motor and driver, and matching it with an advanced speed control system, the drive motor is a servo motor, and it is equipped with a high-precision speed monitoring and control mechanism, which can monitor the roller speed in real time and make feedback adjustments, thereby improving the speed control accuracy, realizing the automatic adjustment and optimization of stretching parameters, and ensuring the stable performance of different batches of products.

[0014] 2. In this utility model, a fine-tuning mechanism is provided, that is, the upper drafting mechanism adopts a liftable structure design. The upper drafting mechanism is rotatably assembled in the bearing of the movable seat. The movable seat can be lifted and lowered by an electric cylinder to realize the adjustment of the distance between the upper and lower drafting rollers. It can be adapted to hollow fibers of different thicknesses, which is more convenient. Attached Figure Description

[0015] Figure 1 This is a perspective view of the entire utility model;

[0016] Figure 2 This is a perspective view of the frame and the lower drawing structure of this utility model;

[0017] Figure 3 This is a perspective view of the upper stretching structure of this utility model;

[0018] Figure 4 This is a perspective view of the guide mechanism of this utility model.

[0019] In the diagram: 1. Frame; 2. Drafting mechanism; 3. Guide mechanism; 11. Base; 12. Mounting slot; 13. Longitudinal beam; 14. Speed ​​controller; 21. Carriage; 22. Fixed seat; 23. Movable seat; 24. Bearing; 25. Drafting roller; 26. Anti-slip rubber strip; 27. Connecting frame; 28. Drive motor; 29. ​​Fixed frame; 210. Electric cylinder; 31. Bracket; 32. V-shaped frame; 33. Guide roller. Detailed Implementation

[0020] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Please see Figures 1-4In this embodiment of the utility model, the drawing mechanism for hollow fiber production includes a frame 1, a drawing mechanism 2 is provided on one side of the top of the frame 1, and a guide mechanism 3 is provided on the other side of the top of the frame 1. The frame 1 includes two bases 11 arranged symmetrically front to back. The drawing mechanism 2 includes a set of slides 21 fixedly connected to one side of the top of the bases 11. There are two slides 21 arranged symmetrically. A fixed seat 22 is fixedly connected between the two slides 21. A movable seat 23 is slidably connected between the two slides 21. Bearings 24 are fixedly installed in both the fixed seat 22 and the movable seat 23. The rotating ends of the inner sides of every two symmetrically arranged bearings 24 are fixedly connected to the same drawing mechanism. The two drafting rollers 25 are equipped with drive motors 28 at their front ends. The drive motors 28 are servo motors. A speed controller 14 is fixedly connected to one side of the top of the two bases 11. The speed controller 14 is located on the other side of the two drafting rollers 25, and a speed sensor is set on the top of the speed controller 14 facing the two drafting rollers 25. The whole system adopts high-precision motors and drivers, and is equipped with an advanced speed control system. Its drive motors 28 are servo motors and are equipped with a high-precision speed monitoring and control mechanism, which can monitor the roller speed in real time and make feedback adjustments. This can improve the speed control accuracy, realize the automatic adjustment and optimization of drafting parameters, and ensure the stable performance of different batches of products.

[0024] Each end of the drive motor 28 is fixedly connected to a connecting bracket 27. The rear end of the connecting bracket 27 is fixedly connected to a fixed seat 22 or a movable seat 23 on the corresponding side, which serves to fix the drive motor 28.

[0025] The outer annular wall of the stretching roller 25 is fixedly connected with multiple anti-slip rubber strips 26 at equal angles. Multiple longitudinal beams 13 are fixedly connected at equal intervals between the two bases 11. An installation groove 12 is provided between the upper and lower side walls of the other end of the base 11. The overall stretching structure can be installed by using the two installation grooves 12 of the base 11 in conjunction with the installation components.

[0026] An electric cylinder 210 is installed directly above the movable seat 23. The movable end of the bottom output shaft of the electric cylinder 210 is fixedly connected to the top of the movable seat 23 on the corresponding side. A fixed frame 29 is fixedly connected to each end of the electric cylinder 210. The fixed frame 29 is fixedly connected to the slide 21 on the corresponding side. It is equipped with a fine adjustment mechanism. That is, the drafting mechanism 2 above it adopts a liftable structure design. That is, the drafting mechanism 2 above it is rotatably mounted in the bearing 24 of the movable seat 23. The movable seat 23 can be driven to rise and fall by the electric cylinder 210 to realize the adjustment of the distance between the upper and lower drafting rollers 25. It can adapt to hollow fibers of different thicknesses and is quite convenient.

[0027] The guiding mechanism 3 includes a V-shaped frame 32 disposed above the other end of the two bases 11. Three guide rollers 33 are rotatably mounted between the two V-shaped frames 32 in a V-shape. Two supports 31 are symmetrically fixedly connected to the bottom end of the V-shaped frame 32. The bottom end of the supports 31 is fixedly connected to the base 11 on its corresponding side. The three guide rollers 33 can transmit and guide the hollow fiber filaments stretched by the two stretching rollers 25.

[0028] The working principle of this utility model is as follows: The whole adopts a high-precision motor and driver, and is equipped with an advanced speed control system. The drive motor 28 is a servo motor and is equipped with a high-precision speed monitoring and control mechanism. That is, the top of the speed controller 14 is equipped with a speed sensor on the side facing the two drafting rollers 25. It can monitor the roller speed in real time and make feedback adjustments, which can improve the speed control accuracy, realize the automatic adjustment and optimization of drafting parameters, and ensure the performance stability of different batches of products. The three guide rollers 33 can transmit and guide the hollow fiber filaments drafted by the two drafting rollers 25. Because it is equipped with a fine adjustment mechanism, that is, the drafting mechanism 2 above it adopts a liftable structure design. That is, the drafting mechanism 2 above it is rotatably mounted in the bearing 24 of the movable seat 23. The movable seat 23 can be driven to lift and lower via the electric cylinder 210 to realize the adjustment of the distance between the upper and lower drafting rollers 25. It can adapt to hollow fibers of different thicknesses, which is more convenient.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A drawing mechanism for hollow fiber production, comprising a frame (1), wherein a drawing mechanism (2) is provided on one side of the top of the frame (1), and a guide mechanism (3) is provided on the other side of the top of the frame (1). Its features are: The frame (1) includes two bases (11) arranged symmetrically in front and behind. The stretching mechanism (2) includes a set of slides (21) fixedly connected to one side of the top of the base (11). There are two slides (21) arranged symmetrically in one set. A fixed seat (22) is fixedly connected between the two slides (21) in one set. A movable seat (23) is slidably connected between the two slides (21). Bearings (24) are fixedly installed in both the fixed seat (22) and the movable seat (23). The same stretching roller (25) is fixedly connected to the inner rotating end of each pair of bearings (24) arranged symmetrically in front and behind. A drive motor (28) is provided at the front end of the two stretching rollers (25). The drive motor (28) is a servo motor. A speed controller (14) is fixedly connected to one side of the top of the two bases (11). The speed controller (14) is located on the other side of the two stretching rollers (25), and a speed sensor is provided on the top of the speed controller (14) facing the two stretching rollers (25).

2. The drawing mechanism for hollow fiber production according to claim 1, characterized in that: The drive motor (28) is fixedly connected to a connecting frame (27) at each end, and the rear end of the connecting frame (27) is fixedly connected to a fixed seat (22) or a movable seat (23) on the corresponding side.

3. The drawing mechanism for hollow fiber production according to claim 1, characterized in that: The outer annular wall of the stretching roller (25) is fixedly connected with multiple anti-slip rubber strips (26) at equal angles.

4. The drawing mechanism for hollow fiber production according to claim 1, characterized in that: An electric cylinder (210) is provided directly above the movable seat (23), and the movable end of the bottom output shaft of the electric cylinder (210) is fixedly connected to the top of the movable seat (23) on the corresponding side.

5. The drawing mechanism for hollow fiber production according to claim 4, characterized in that: Each end of the electric cylinder (210) is fixedly connected to a fixed frame (29), and the fixed frame (29) is fixedly connected to the slide (21) on the corresponding side.

6. The drawing mechanism for hollow fiber production according to claim 1, characterized in that: Multiple longitudinal beams (13) are fixedly connected at equal intervals between the two bases (11), and an installation groove (12) is provided between the upper and lower side walls of the other end of the base (11).

7. The drawing mechanism for hollow fiber production according to claim 1, characterized in that: The guiding mechanism (3) includes a V-shaped frame (32) disposed above the other end of the two bases (11). Three guide rollers (33) are rotatably mounted between the two V-shaped frames (32) in a V-shape. Two brackets (31) are symmetrically fixedly connected to the bottom end of the V-shaped frame (32). The bottom end of the bracket (31) is fixedly connected to the base (11) on its corresponding side.

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