Drafting device for chemical fiber filaments
By using rotary joints and temperature regulation mechanisms in chemical fiber filament drafting device, the liquid medium conducts heat, the problems of large energy consumption and inaccurate temperature control are solved, and low-energy consumption and high-efficiency temperature control and drafting process are achieved uniformity.
Patent Information
- Application Number
- CN202420956459.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-06
AI Technical Summary
The existing chemical fiber filament drafting devices have problems such as large energy consumption, slow temperature increase of the shaping liquid and insufficient temperature control.
A drafting device including a rotary joint and a temperature regulating mechanism is designed to conduct heat through the liquid medium, accurately regulate the temperature of the draft roller, and ensure that the interface connection is leak-free through the sealing structure. The draft roller inner wall is equipped with spiral convex ribs to improve the Thermal conductivity efficiency.
It achieves low energy consumption and accurate temperature control, convenient interface connection of draft rollers without leakage, uniform heat distribution, and improves the efficiency of drafting process.
Smart Images
Figure CN222274804U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical fiber filament production equipment, in particular to a drafting device for chemical fiber filament. Background Art
[0002] Chemical fiber filaments are fibers with textile properties made from natural or synthetic polymer compounds, through the processes of preparing spinning solution, spinning and post-processing. The production of chemical fiber filaments usually involves first making natural or synthetic polymers or inorganic substances into spinning melts or solutions, then filtering and metering them, and then extruding them from spinnerets into liquid streams, which are then solidified into primary fibers. The mechanical properties of primary fibers are very poor, and they must undergo a series of post-processing procedures to meet the requirements of textile processing and use. Drafting is a common post-processing procedure, which is a process by which chemical fiber filaments are drawn out and thinned, so that the fibers therein are gradually straightened, the hooks are gradually eliminated, and the chemical fiber filaments gradually reach the predetermined thickness. At present, the drafting of chemical fiber filaments is generally achieved by drafting rollers, which are achieved by the action of two pairs of rollers with different surface speeds and a spacing equivalent to the fiber length; the drafting process of chemical fiber filaments has high requirements for temperature. The Chinese patent application number 2015208545980 discloses a "Drafting device for chemical fiber filaments" and the announcement number is CN205099801U. The device heats the setting liquid by setting a heating tube under the drafting mechanism to achieve the purpose of heat setting the chemical fiber filaments during the drafting process. However, the heating tube consumes a lot of energy, the setting liquid heats up slowly, and the temperature control of the drafting mechanism is not accurate enough. Utility Model Content
[0003] In order to solve the above technical problems, the utility model provides a drafting device for chemical fiber filaments which has accurate temperature control and is convenient to install and maintain.
[0004] The technical solution adopted by the utility model to solve the technical problem is:
[0005] The utility model discloses a stretching device for chemical fiber filaments, comprising a pay-off reel, a take-up reel, a tension roller and a stretching roller arranged between the pay-off reel and the take-up reel, wherein two ends of the stretching roller are respectively connected to a temperature control mechanism via a rotating joint, wherein the rotating joint comprises an outer sleeve and a connecting nut, wherein an inner cavity at one end of the outer sleeve is provided with a bearing, and an outer wall at the other end is provided with an external thread, wherein one end of the connecting nut is coaxially and rotatably connected to a pipeline, and the other end is connected to the external threaded end of the outer sleeve, wherein the stretching roller is a hollow tubular structure, and an axle tube connected to the inner cavity thereof is provided at the end of the stretching roller, and the outer sleeve is rotatably mounted on the axle tube via a bearing; and the pipeline is connected to the temperature control mechanism.
[0006] Through this solution, the device uses a temperature regulating mechanism to accurately regulate the temperature of the drafting roller, with low energy consumption and accurate temperature control.
[0007] Preferably, the temperature control mechanism is a water tank or a heat transfer oil tank with a temperature control device, the end of the shaft tube extends at least to the outer end of the external threaded end of the outer sleeve, and a first sealing ring is arranged in the inner cavity of the external threaded end of the outer sleeve, and the first sealing ring is used to close the gap between the inner wall of the outer sleeve and the outer wall of the shaft tube.
[0008] Through this solution, heat is conducted by liquid medium, which is conducive to precise temperature control.
[0009] Preferably, a clamping ring is provided on the outer wall of the pipe end, and a hook matching the clamping ring is provided at the end of the connecting nut, and the hook is engaged in the clamping ring; a second sealing ring is provided on the end face of the external threaded end of the outer sleeve, and the second sealing ring is located between the end face of the outer sleeve and the end face of the pipe.
[0010] With this solution, pipes can be connected quickly and easily without leaks at the connections.
[0011] Preferably, spiral ribs are provided on the inner wall of the drafting roller.
[0012] Through this solution, the drafting roller conducts heat quickly and distributes heat evenly.
[0013] Due to the adoption of the above structure, the device uses the temperature regulating mechanism of the liquid medium to accurately regulate the temperature of the drafting roller, has low energy consumption, accurate temperature control, and the interface of the drafting roller is easy to connect and leak-free. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the assembly structure of an embodiment of the utility model.
[0015] Figure 2 It is a half-section structural diagram of a rotary joint. DETAILED DESCRIPTION
[0016] The present invention is further described in detail below in conjunction with the accompanying drawings. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions away from the geometric center of a specific component.
[0017] like Figure 1As shown, the drafting device for chemical fiber filaments described in the utility model comprises a pay-off reel 1, a take-up reel 2, a tension roller 3 and a drafting roller 4 arranged between the pay-off reel 1 and the take-up reel 2. At the same time, an input guide roller 11 for changing the guiding direction is arranged between the pay-off reel 1 and the tension roller 3, and an output guide roller 12 for changing the guiding direction is arranged between the drafting roller 4 and the take-up reel 2; the two ends of the drafting roller 4 are respectively connected to a temperature regulating mechanism 5 through a rotary joint, and the temperature regulating mechanism 5 is a water tank or a heat transfer oil tank with a temperature control device. The chemical fiber filaments on the pay-off reel 1 pass through the input guide roller 11, the tension roller 3, the drafting roller 4, and the output guide roller 12 to enter the take-up reel 2 to achieve winding. The tension roller 3, the drafting roller 4, the input guide roller 11, and the output guide roller 12 are rotatably mounted on the frame through bearings located at their ends, and the tension roller 3 and the drafting roller 4 are driven to rotate by the driving mechanism. The frame, driving mechanism and temperature regulating mechanism 5 are all prior art and will not be described in detail here.
[0018] like Figure 2 As shown, the rotary joint includes an outer sleeve 6 and a connecting nut 7. A bearing 8 is provided in the inner cavity of one end of the outer sleeve 6, and an external thread is provided on the outer wall of the other end. One end of the connecting nut 7 is coaxially and rotatably connected to the pipe 9, and the other end is connected to the external thread end of the outer sleeve 6. The drafting roller 4 is a hollow tubular structure. The end of the drafting roller 4 is provided with a shaft tube 41 connected to its inner cavity. The outer sleeve 6 is rotatably mounted on the shaft tube 41 through the bearing 8; the pipe 9 is connected to the temperature control mechanism 5. The bearing 8 supports the outer sleeve 6 on the shaft tube 41 and does not affect the rotation of the shaft tube 41. When the drafting roller 4 and the shaft tube 41 rotate, the outer sleeve 6 installed on the shaft tube 41 remains stationary. The end of the shaft tube 41 at least extends to the outer end of the external thread end of the outer sleeve 6, so that the external thread end of the outer sleeve 6 is completely sleeved on the shaft tube 41, but the inner diameter of the external thread end of the outer sleeve 6 is slightly larger than the outer diameter of the shaft tube 41, and there is a small gap between the two to avoid friction. A first sealing ring 61 is provided in the inner cavity of the outer threaded end of the outer sleeve 6, and the first sealing ring 61 is used to close the gap between the inner wall of the outer sleeve 6 and the outer wall of the shaft tube 41. When the shaft tube 41 rotates, the outer threaded end of the outer sleeve 6 is relatively stationary, and the first sealing ring 61 isolates and seals the inner and outer sides, which can prevent the circulating water or heat transfer oil in the shaft tube 41 from leaking out through the gap of the outer wall of the shaft tube 41. At the same time, it can also prevent the leaked circulating water or heat transfer oil from contaminating and corroding the bearing 8. The first sealing ring 61 can be provided in one piece, or it can be provided in the form of a seal ring. Figure 2 As shown in FIG. 1 , two paths are arranged in parallel along the axial direction of the shaft tube 41 to improve the sealing effect. In addition, in order to further improve the sealing effect, as shown in FIG. Figure 2As shown, a sealing ring cavity is provided at the junction of the bearing end and the external thread end of the outer sleeve 6, the inner diameter of the sealing ring cavity is larger than the inner diameter of the external thread end, and a sealing ring is provided in the sealing ring cavity.
[0019] A clamping ring 91 is provided on the outer wall of the end of the pipe 9. The clamping ring 91 may be an annular groove directly provided on the outer wall of the pipe 9, or may be a Figure 2 The annular body coaxial with the pipe 9 is formed by the end of the pipe 9 being turned outward. The end of the connecting nut 7 is provided with a hook 71 matching the clamping ring 91, and the hook 71 is clamped in the clamping ring 91, so that the connecting nut 7 and the pipe 9 can rotate relative to each other while maintaining coaxiality and will not fall off; the end surface of the external thread end of the outer sleeve 6 is provided with a second sealing ring 62, and the second sealing ring 62 is located between the end surface of the outer sleeve 6 and the end surface of the pipe 9. When the connecting nut 7 is sleeved on the external thread end of the outer sleeve 6, the connecting nut 7 is tightened until the end of the pipe 9 is tightly attached to the end surface of the external thread end, and the second sealing ring 62 is pressed to play a sealing role.
[0020] When in use, the stretching roller 4 is connected in series between the input end and the output end of the temperature control mechanism 5 through the pipeline 9. The circulating water or heat transfer oil enters the inner cavity of the stretching roller 4 from the output end of the temperature control mechanism 5 through the pipeline 9 and the input end of the stretching roller 4, flows out from the output end of the stretching roller 4 after heat exchange, and returns to the temperature control mechanism 5 through the pipeline 9 and the input end of the temperature control mechanism 5. The temperature control mechanism 5 is provided with a temperature control device such as an electric heater or a heat sink, which can control the temperature of the circulating water or heat transfer oil within a set range, thereby accurately controlling the working temperature of the stretching roller 4.
[0021] In addition, in order to improve the heat exchange efficiency of the drafting roller 4, a spiral rib 42 is provided on the inner wall of the drafting roller 4. The spiral rib 42 increases the contact area between the drafting roller 4 and the heat conducting medium, which is conducive to rapid heat exchange.
[0022] Although some specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustration only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.
Claims
1. A drafting device for chemical fiber filaments, comprising a pay-off reel (1), a take-up reel (2), a tension roller (3) and a drafting roller (4) arranged between the pay-off reel (1) and the take-up reel (2), characterized in that: The two ends of the drafting roller (4) are respectively connected to the temperature control mechanism (5) via a rotary joint. The rotary joint comprises an outer sleeve (6) and a connecting nut (7). A bearing (8) is arranged in the inner cavity of one end of the outer sleeve (6), and an external thread is arranged on the outer wall of the other end. One end of the connecting nut (7) is coaxially and rotatably connected to the pipe (9), and the other end is connected to the external thread end of the outer sleeve (6). The drafting roller (4) is a hollow tubular structure. An axial tube (41) communicating with the inner cavity thereof is arranged at the end of the drafting roller (4). The outer sleeve (6) is rotatably mounted on the axial tube (41) via the bearing (8); the pipe (9) is connected to the temperature control mechanism (5).
2. A drawing device for chemical fiber filaments according to claim 1, characterized in that: The temperature regulating mechanism (5) is a water tank or a heat transfer oil tank with a temperature control device. The end of the shaft tube (41) at least extends to the outer end of the external threaded end of the outer sleeve (6). A first sealing ring (61) is provided in the inner cavity of the external threaded end of the outer sleeve (6). The first sealing ring (61) is used to close the gap between the inner wall of the outer sleeve (6) and the outer wall of the shaft tube (41).
3. The drawing device for chemical fiber filaments according to claim 1, characterized in that: A clamping ring (91) is provided on the outer wall of the end of the pipe (9), and a hook (71) matching the clamping ring (91) is provided at the end of the connecting nut (7), and the hook (71) is clamped in the clamping ring (91); a second sealing ring (62) is provided on the end surface of the external threaded end of the outer sleeve (6), and the second sealing ring (62) is located between the end surface of the outer sleeve (6) and the end surface of the pipe (9).
4. A drawing device for chemical fiber filaments according to any one of claims 1 to 3, characterized in that: The inner wall of the drafting roller (4) is provided with a spiral rib (42).