A fiber composite membrane melt spinning and stretching device

Abstract

The present invention belongs to the technical field of melt spinning and stretching of fiber composite membranes, and specifically relates to a melt spinning and stretching device for fiber composite membranes, including: an extrusion device, a cooling device, a liquid storage assembly, a pre-cooling mechanism, and a soft baking assembly; an extrusion device is arranged on one side of the extrusion device; the cooling device includes a cooling channel, in which a right rotating group housing is arranged, a left rotating group housing is arranged on one side of the right rotating group housing, a plurality of support legs are arranged below the cooling channel, and a plurality of uniformly distributed air nozzles are installed on the right rotating group housing; the liquid storage assembly includes a support ring plate, a transition cavity is drilled on the support ring plate, and balls are installed on the side wall of the transition cavity. By setting the corresponding devices, the present invention improves the cooling effect on the molten filaments, so that the cooling efficiency of the filaments will not be reduced after the device is used for a long time, enabling the filaments to be quickly shaped and avoiding bending and deformation, thereby improving the forming effect of the composite membrane.

Description

Technical Field

[0001] The present invention belongs to the technical field of melt spinning and stretching of fiber composite membranes, and particularly relates to a melt spinning and stretching device for fiber composite membranes. Background Art

[0002] Common separation membranes mainly include flat type, tubular type, spiral type, and hollow fiber type, etc. Compared with flat membranes, hollow fiber membranes have the advantages of large packing density per unit volume, no need for any support, simple structure, easy cleaning, etc., and are widely used in large-scale seawater desalination, sewage treatment, gas separation, food, medicine and other fields. With the development of society and the continuous expansion of the application fields of membrane technology, the performance requirements for membranes are also constantly improving.

[0003] The preparation methods of fiber composite membranes can be roughly divided into three categories: solution spinning, melt spinning, and semi-melt spinning. At present, some low-pressure hollow microfiltration or ultrafiltration composite membranes are usually prepared by solution spinning method. Since the solution spinning method forms membranes by immersion precipitation phase inversion method, the fiber strength is relatively low and the fiber diameter is not thin enough (usually about 1 mm). The micropore formation mechanisms of melt spinning or melt spinning-stretching method and semi-melt spinning or thermally induced phase separation method are completely different. The film-forming process of semi-melt spinning or thermally induced phase separation method is that when the polymer is above the melting point, the polymer and the diluent form a homogeneous solution. During cooling and solidification, due to liquid-liquid and liquid-solid phase separation, when the diluent is removed, micropores are formed. If a composite membrane is to be formed, further techniques such as interfacial polymerization need to be used to form an ultrathin functional layer, and the process is complex and the cost is high.

[0004] The film-forming process of melt spinning-stretching method is that the polymer is first melt-extruded under high stress and then stretched to form micropores. Since the melt spinning-stretching method for film formation has no pollution to the environment, is suitable for large-scale industrial production, can reduce costs, and has broad prospects. However, at present, in the method of forming a film by melt spinning and stretching, it is necessary to cool the molten filaments before stretching so that the filaments will not be deformed or bent, thereby ensuring the formation of the composite membrane. But in the prior art, water cooling is usually used, and the temperature of the water flow will increase after long-term use, thus affecting the cooling effect of the filaments. And the cooling water in the water tank usually has the same temperature, and it is impossible to achieve different cooling degrees at different positions, thereby affecting the forming effect of the composite membrane.

[0005] Therefore, in view of the above technical problems, it is necessary to provide a melt spinning and stretching device for fiber composite membranes. Summary of the Invention

[0006] The purpose of the present invention is to provide a melt spinning and stretching device for fiber composite membranes to solve the problem of poor cooling effect of the existing fiber composite membrane production and stretching device.

[0007] To achieve the above object, the technical solution provided by an embodiment of the present invention is as follows:

[0008] A fiber composite film melt spinning and stretching device, comprising: an extrusion device, a cooling device, a liquid storage assembly, a pre-cooling mechanism, and a soft baking assembly;

[0009] One side of the extrusion device is provided with an extrusion device;

[0010] The cooling device is arranged between the extrusion device and the extrusion device. The cooling device includes a cooling channel. A right rotating group housing is arranged in the cooling channel. A left rotating group housing is arranged on one side of the right rotating group housing. A plurality of support legs are arranged below the cooling channel. A plurality of uniformly distributed air nozzles are installed on the right rotating group housing;

[0011] The liquid storage assembly is arranged outside the right rotating group housing. The liquid storage assembly includes a support ring plate. A transition cavity is dug on the support ring plate. Ball bearings are installed on the side wall of the transition cavity;

[0012] The pre-cooling mechanism is arranged in the cooling channel. The pre-cooling mechanism is used to suck away the cold air sprayed by the rotating support ring, so that the cold air pre-cools the polyethylene filaments entering the cooling channel, facilitating the rapid shaping of the polyethylene filaments;

[0013] The soft baking assembly is arranged on one side of the support ring plate. The soft baking assembly is used to bake the polyethylene filaments, facilitating their thermal stretching.

[0014] Further, a rotating support ring is arranged between the right rotating group housing and the left rotating group housing, which is used to support the elastic support block to prevent the elastic support block from falling off and has the function of driving the elastic support block to rotate. Elastic support blocks are installed on the rotating support ring, which are used to push the ball bearings, so that the ball bearings can be pushed when the device is not in use, so that there is no gap between the ball bearings and the support ring plate, avoiding the leakage of liquid nitrogen. And during the rotation of the elastic support block, the ball bearings will also be driven to roll, so that the liquid nitrogen leaks out from between the ball bearings and the support ring plate, and then after gasification, it can reduce the temperature of the gas;

[0015] A plurality of fixing columns are connected between the elastic support block and the right rotating group housing and the left rotating group housing respectively, which are used to fix the elastic support block to prevent the elastic support block from falling off. And the right rotating group housing and the left rotating group housing are also connected together through the elastic support block and the fixing columns, so that when the left rotating group housing rotates, it can also drive the right rotating group housing to rotate, thereby realizing driving a plurality of air nozzles to rotate and uniformly cooling and shaping the filaments.

[0016] Furthermore, a double-chamber air supply pipe is provided between the right rotating group housing and the left rotating group housing for connecting the air supply pipe, facilitating the reception of gas, and not affecting the passing of the filaments. Sealing connection sleeves are connected between the double-chamber air supply pipe and the right rotating group housing and the left rotating group housing respectively to prevent gas leakage and ensure that the rotation of the left rotating group housing does not affect the stability of the double-chamber air supply pipe.

[0017] Furthermore, an air supply pipe is connected to the double-chamber air supply pipe for delivering gas into the double-chamber air supply pipe. The other end of the air supply pipe is connected to a first air pump, which is installed below the cooling channel. An air suction hopper is installed on the first air pump. By starting the first air pump, the air suction hopper can draw in the outside air and then deliver it into the double-chamber air supply pipe through the air supply pipe.

[0018] Furthermore, a rotation auxiliary frame is installed on the left rotating group housing to drive the rotation of the left rotating group housing, enabling multiple jet nozzles to uniformly cool and shape the filaments. A plurality of evenly distributed driven racks are installed on the rotation auxiliary frame to facilitate the rotation of the drive gear to drive the rotation auxiliary frame to rotate.

[0019] A drive gear meshes with the driven rack to transmit power. A motor is provided on one side of the drive gear to drive the transmission shaft and the drive gear to rotate, thereby providing power for the rotating jet nozzles. A transmission shaft is connected between the motor and the drive gear to support the drive gear and drive the drive gear to rotate.

[0020] Furthermore, a storage tank is threadedly connected to the cooling channel. The storage tank is connected and communicated with the transition chamber for storing liquid nitrogen and facilitating the entry of liquid nitrogen into the transition chamber. When the liquid nitrogen is used up, the staff only needs to replace the storage tank.

[0021] Furthermore, the pre-cooling mechanism includes a left fixing ring. A left collection chamber is drilled on the left fixing ring to facilitate the delivery of gas. A plurality of air suction pipes are installed on the side wall of the left collection chamber. By sucking air through the plurality of air suction pipes, the cold air ejected from the jet nozzles can move towards the air suction pipes, enabling the cold air to contact the filaments and achieving the cooling effect. This not only pre-cools the filaments but also prevents dust and impurities from adhering to the filaments.

[0022] A second air pump is installed on the left fixing ring. The second air pump is connected with a communication pipe and a transmission pipe to drive and convey the gas flow, enabling the gas in the left collection chamber to be conveyed into the right collection chamber.

[0023] Further, the soft baking component includes a right fixing ring, on which a right collecting cavity is drilled to prevent the heating wire and avoid the direct influence of the heating wire on the filament. An heating wire is arranged in the right collecting cavity to heat the gas, so that the blown gas has a higher temperature, which is convenient for softening the filament. A plurality of air nozzles are installed on the side wall of the right collecting cavity for jetting gas.

[0024] Further, a diversion ring is installed at one end of the right fixing ring close to the right rotating group housing, reducing the probability of hot gas flowing to the right rotating group housing and playing a role in diversion.

[0025] Further, a control box is installed on the extrusion device, and the control box is electrically connected to the first air pump, the motor, the second air pump and the heating wire, which is convenient for the staff to control intelligently, improves the intelligence of the device, and also reduces the pressure of the staff.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] By setting the corresponding equipment, the present invention improves the cooling effect on the molten filament, so that the cooling efficiency of the filament will not be reduced after the device is used for a long time, the filament can be quickly shaped, the situation of bending and deformation can be avoided, and the cooling effect at different positions can be different, thereby improving the forming effect of the composite film. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is a partial sectional view of a fiber composite film melt spinning and stretching device in an embodiment of the present invention;

[0030] Figure 2 For Figure 1 the structural schematic diagram at A in

[0031] Figure 3 It is a three-dimensional view of a fiber composite film melt spinning and stretching device in an embodiment of the present invention;

[0032] Figure 4 It is a partial structural schematic diagram of a cooling device of a fiber composite film melt spinning and stretching device in an embodiment of the present invention;

[0033] Figure 5 For Figure 4 the structural schematic diagram at B in

[0034] Figure 6 For Figure 4 Structural schematic diagram at position C in the middle;

[0035] Figure 7 Partial structural schematic diagram of the rotary drive mechanism in an embodiment of the present invention;

[0036] Figure 8 Partial sectional view of the cooling channel in an embodiment of the present invention.

[0037] In the figure: 1. Extrusion device, 101. Extrusion device, 2. Cooling device, 201. Cooling channel, 202. Right rotary group housing, 203. Left rotary group housing, 204. Rotary support ring, 205. Elastic support block, 206. Fixed column, 207. Air supply double-chamber pipe, 208. Sealed connection sleeve, 209. Air supply pipe, 210. First air pump, 211. Suction hopper, 212. Rotary auxiliary frame, 213. Driven rack, 214. Driving gear, 215. Transmission shaft, 216. Electric motor, 217. Support leg, 218. Jet nozzle, 3. Liquid storage assembly, 301. Support ring plate, 302. Transition cavity, 303. Ball, 304. Storage tank, 4. Pre-cooling mechanism, 401. Left fixing ring, 402. Left collection cavity, 403. Suction pipe, 404. Second air pump, 405. Connecting pipe, 406. Transmission pipe, 5. Soft baking assembly, 501. Right fixing ring, 502. Right collection cavity, 503. Heating wire, 504. Jet pipe, 505. Flow guide ring, 6. Control box. Detailed implementation manners

[0038] The present invention will be described in detail below in conjunction with the various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method or functional transformation made by those of ordinary skill in the art based on these embodiments is included in the protection scope of the present invention.

[0039] The present invention discloses a fiber composite film melt spinning and stretching device. Referring to Figures 1-8 as shown, it includes: an extrusion device 1, a cooling device 2, a liquid storage assembly 3, a pre-cooling mechanism 4 and a soft baking assembly 5.

[0040] Referring to Figures 1-4 as shown, an extrusion device 101 is arranged on one side of the extrusion device 1. The cooling device 2 is arranged between the extrusion device 1 and the extrusion device 101. The cooling device 2 includes a cooling channel 201. A right rotary group housing 202 is arranged in the cooling channel 201, and a left rotary group housing 203 is arranged on one side of the right rotary group housing 202. Through the right rotary group housing 202 and the left rotary group housing 203, gas can be transported, facilitating the uniform cooling effect of polyethylene filaments.

[0041] Among them, a plurality of support legs 217 are provided below the cooling channel 201 to support the cooling channel 201, prevent the cooling channel 201 from tilting and shaking, and improve the stability of the device. A plurality of evenly distributed jet nozzles 218 are installed on the right rotating group housing 202 to eject cold air, so that the filaments passing through can be fully cooled and prevent the polyethylene filaments from bending and deforming.

[0042] Reference Figures 1-6 As shown, a rotating support ring 204 is provided between the right rotating group housing 202 and the left rotating group housing 203 to support the elastic support block 205, prevent the elastic support block 205 from falling off, and drive the elastic support block 205 to rotate. An elastic support block 205 is installed on the rotating support ring 204 to push the ball 303, so that when the device is not in use, the ball 303 can be pushed, there is no gap between the ball 303 and the support ring plate 301, preventing the leakage of liquid nitrogen, and during the rotation of the elastic support block 205, the ball 303 will also be driven to roll, so that the liquid nitrogen leaks out from between the ball 303 and the support ring plate 301, and then after gasification, it can reduce the temperature of the gas.

[0043] Preferably, the elastic support block 205 has the function of being elastic and resistant to low temperature, and the elastic force can prevent the device from leaking liquid nitrogen when not in use.

[0044] Reference Figures 1-6 As shown, a plurality of fixing columns 206 are connected between the elastic support block 205 and the right rotating group housing 202 and the left rotating group housing 203 to fix the elastic support block 205, prevent the elastic support block 205 from falling off, and connect the right rotating group housing 202 and the left rotating group housing 203 through the elastic support block 205 and the fixing columns 206, so that when the left rotating group housing 203 rotates, it can also drive the right rotating group housing 202 to rotate, and then drive a plurality of jet nozzles 218 to rotate to evenly cool and shape the filaments.

[0045] Specifically, a double - chamber air supply pipe 207 is also provided between the right rotating group housing 202 and the left rotating group housing 203 to connect to the air supply pipe 209, which is convenient for receiving gas and does not affect the passing of the filaments. Sealing connection sleeves 208 are connected between the double - chamber air supply pipe 207 and the right rotating group housing 202 and the left rotating group housing 203 to prevent gas leakage and ensure that the rotation of the left rotating group housing 203 does not affect the stability of the double - chamber air supply pipe 207.

[0046] Reference Figure 1As shown, the double-lumen air supply tube 207 is connected to an air supply pipe 209 for conveying gas into the double-lumen air supply tube 207. The other end of the air supply tube 209 is connected to a first air pump 210. The first air pump 210 is installed below the cooling channel 201. An air suction hopper 211 is installed on the first air pump 210. By starting the first air pump 210, the air suction hopper 211 can draw in the outside, and then convey it to the double-lumen air supply tube 207 through the air supply pipe 209.

[0047] refer to Figures 1-7 As shown, a rotating auxiliary frame 212 is installed on the left rotating assembly shell 203 to drive the rotation of the left rotating assembly shell 203, so that multiple air nozzles 218 can evenly cool and shape the filaments. Multiple evenly distributed driven racks 213 are installed on the rotating auxiliary frame 212, so that the driving gear 214 can rotate and drive the rotating auxiliary frame 212 to rotate.

[0048] Specifically, a driving gear 214 is meshed with the driven rack 213 to transmit power. A motor 216 is provided on one side of the driving gear 214 to drive a transmission shaft 215 and the driving gear 214 to rotate, thereby providing power for the rotating air jet 218. A transmission shaft 215 is connected between the motor 216 and the driving gear 214 to support the driving gear 214 and drive the driving gear 214 to rotate.

[0049] refer to Figures 1-6 As shown, the liquid storage assembly 3 is arranged outside the right rotating assembly shell 202, and the liquid storage assembly 3 includes a supporting ring plate 301, which is used to support the right rotating assembly shell 202 and the left rotating assembly shell 203, so that the right rotating assembly shell 202 and the left rotating assembly shell 203 will not fall off, and the supporting ring plate 301 is rotatably connected with the right rotating assembly shell 202 and the left rotating assembly shell 203. Because the rotation speed of the right rotating assembly shell 202 and the left rotating assembly shell 203 is slow, no significant wear will occur. A transition cavity 302 is excavated on the supporting ring plate 301 for storing liquid nitrogen.

[0050] Specifically, a ball 303 is installed on the side wall of the transition chamber 302, and the ball 303 can block the outlet of the transition chamber 302. By rotating the ball 303, the liquid nitrogen in the transition chamber 302 can gradually penetrate outward, so that it can absorb a large amount of heat after gasification, so that the temperature of the passing gas is lower.

[0051] In addition, a storage tank 304 is threadedly connected to the cooling channel 201, and the storage tank 304 is connected to the transition chamber 302 for storing liquid nitrogen and facilitating the liquid nitrogen to enter the transition chamber 302. When the liquid nitrogen is used up, the staff only needs to replace the storage tank 304.

[0052] refer to Figures 1-8As shown in the figure, the pre-cooling mechanism 4 is arranged in the cooling channel 201. The pre-cooling mechanism 4 is used to suck away the cold air ejected from the rotating support ring 204, so that the cold air pre-cools the polyethylene filaments entering the cooling channel 201, facilitating the rapid shaping of the polyethylene filaments. The pre-cooling mechanism 4 includes a left fixing ring 401, and a left collecting cavity 402 is formed on the left fixing ring 401 to facilitate the transportation of gas.

[0053] Specifically, a plurality of air suction pipes 403 are installed on the side wall of the left collecting cavity 402. By sucking air through the plurality of air suction pipes 403, the cold air ejected from the jet nozzle 218 can move towards the air suction pipes 403, so that the cold air contacts the filaments, achieving the cooling effect. It not only pre-cools the filaments, but also prevents dust and impurities from adhering to the filaments.

[0054] Reference Figures 1-8 As shown in the figure, a second air pump 404 is installed on the left fixing ring 401. A connecting pipe 405 and a transmission pipe 406 are connected to the second air pump 404, which are used to drive and transport the gas flow, so that the gas in the left collecting cavity 402 can be transported into the right collecting cavity 502.

[0055] Reference Figures 1-8 As shown in the figure, the soft baking component 5 is arranged on one side of the support ring plate 301. The soft baking component 5 is used to bake the polyethylene filaments to facilitate their hot stretching. The soft baking component 5 includes a right fixing ring 501, and a right collecting cavity 502 is formed on the right fixing ring 501 to prevent the heating wire 503 from directly affecting the filaments. An heating wire 503 is arranged in the right collecting cavity 502, which is used to heat the gas, so that the blown gas has a higher temperature, facilitating the softening of the filaments. A plurality of gas jet pipes 504 are installed on the side wall of the right collecting cavity 502 for jetting gas.

[0056] Among them, a diversion ring 505 is installed at one end of the right fixing ring 501 close to the right rotating group housing 202, reducing the probability of hot gas flowing towards the right rotating group housing 202 and playing a role in diversion.

[0057] Specifically, a control box 6 is installed on the extrusion device 101. The control box 6 is electrically connected to the first air pump 210, the motor 216, the second air pump 404 and the heating wire 503, which is convenient for the staff to control intelligently, improves the intelligence of the device, and also reduces the pressure on the staff.

[0058] During specific use, the extrusion device 1 extrudes polyethylene filaments. Then, the staff passes the polyethylene filaments through the cooling channel 201 and transports them into the extrusion device 101 for convenient extrusion. During the process of the filaments passing through the cooling channel 201, the staff starts the electric motor 216, the first air pump 210, and the second air pump 404. Through the first air pump 210, the external gas can be extracted and then transported into the air supply double-chamber pipe 207 through the air supply pipe 209. Then, it enters between the right rotating group housing 202 and the left rotating group housing 203, and finally sprays out through the air jet nozzle 218, thereby being able to blow onto the filaments and achieving the effect of cooling and cooling the filaments.

[0059] The start of the electric motor 216 drives the rotation of the transmission shaft 215 and the drive gear 214. Then, through the driven rack 213, it drives the rotation of the rotation auxiliary frame 212. The rotation auxiliary frame 212 can drive the rotation of the left rotating group housing 203 and the right rotating group housing 202. During the rotation of the right rotating group housing 202 and the left rotating group housing 203, the rotation support ring 204 drives the rotation of the elastic support block 205. When the elastic support block 205 rotates, it drives the rolling of the ball 303. During the rolling of the ball 303, liquid nitrogen gradually seeps out from the gap between the ball 303 and the support ring plate 301.

[0060] The liquid nitrogen that seeps out absorbs a large amount of heat after vaporization, so that the passing gas will be quickly cooled. As a result, the gas ejected from the air jet nozzle 218 will cool and shape the filaments. And by using the inclined air jet nozzle 218, the gas will not directly impact on the filaments, avoiding bending and deformation of the filaments. After the second air pump 404 is started, it will extract the gas in the left collection chamber 402, so that one end of the air suction pipe 403 generates negative pressure and can inhale the gas ejected from the air jet nozzle 218. During the inhalation process, the cold air will contact the passing filaments, thereby achieving the effect of pre-cooling and shaping.

[0061] The gas extracted by the air suction pipe 403 is transported into the transmission pipe 406 through the connecting pipe 405, and then transported into the right collection chamber 502. Then, according to the needs of the staff, the heating wire 503 is turned on to heat-treat the gas, so that the gas ejected from the spray pipe 504 can bake the filaments, making the filaments soften and facilitating the extrusion and stretching by the subsequent extrusion device 101.

[0062] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0063] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard 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 fiber composite membrane melt spinning and stretching device, characterized in that, Including: An extrusion device (1), with an extrusion device (101) arranged on one side of the extrusion device (1); A cooling device (2), arranged between the extrusion device (1) and the extrusion device (101). The cooling device (2) includes a cooling channel (201). A right rotating group housing (202) is arranged inside the cooling channel (201). A left rotating group housing (203) is arranged on one side of the right rotating group housing (202). A plurality of support legs (217) are arranged below the cooling channel (201). A plurality of evenly distributed air jet nozzles (218) are installed on the right rotating group housing (202); A liquid storage assembly (3), arranged outside the right rotating group housing (202). The liquid storage assembly (3) includes a support ring plate (301). A transition cavity (302) is drilled on the support ring plate (301) for storing liquid nitrogen. A ball (303) is installed on the side wall of the transition cavity (302). A rotating support ring (204) is arranged between the right rotating group housing (202) and the left rotating group housing (203). An elastic support block (205) is installed on the rotating support ring (204) for pushing the ball (303). And during the rotation of the elastic support block (205), the ball (303) will also be driven to roll, so that the liquid nitrogen leaks out between the ball (303) and the support ring plate (301); A pre-cooling mechanism (4), arranged inside the cooling channel (201). The pre-cooling mechanism (4) is used to suck away the cold air ejected by the rotating support ring (204), so that the cold air pre-cools the polyethylene filaments entering the cooling channel (201), facilitating the rapid shaping of the polyethylene filaments; A soft baking assembly (5), arranged on one side of the support ring plate (301). The soft baking assembly (5) is used to bake the polyethylene filaments, facilitating the hot stretching of the extrusion device (101).

2. The fiber composite membrane melt spinning and stretching device according to claim 1, characterized in that, A plurality of fixing columns (206) are connected between the elastic support block (205) and the right rotating group housing (202) and the left rotating group housing (203) respectively.

3. The fiber composite membrane melt spinning and stretching device according to claim 1, characterized in that, A double-chamber air supply pipe (207) is also arranged between the right rotating group housing (202) and the left rotating group housing (203). Sealing connection sleeves (208) are connected between the double-chamber air supply pipe (207) and the right rotating group housing (202) and the left rotating group housing (203) respectively.

4. The fiber composite membrane melt spinning and stretching device according to claim 3, characterized in that, A air supply pipe (209) is connected to the double-chamber air supply pipe (207). The other end of the air supply pipe (209) is connected to a first air pump (210). The first air pump (210) is installed below the cooling channel (201). An air suction hopper (211) is installed on the first air pump (210).

5. The fiber composite membrane melt spinning and stretching device according to claim 1, characterized in that, A rotating auxiliary frame (212) is installed on the left rotating group housing (203). A plurality of evenly distributed driven racks (213) are installed on the rotating auxiliary frame (212). A driving gear (214) is engaged with the driven racks (213). A motor (216) is arranged on one side of the driving gear (214). A transmission shaft (215) is connected between the motor (216) and the driving gear (214).

6. The fiber composite membrane melt spinning and stretching device according to claim 4, characterized in that, A storage tank (304) is threadedly connected to the cooling channel (201), and the storage tank (304) is communicated with the transition cavity (302).

7. The fiber composite membrane melt spinning and stretching device according to claim 1, characterized in that, The pre-cooling mechanism (4) includes a left fixing ring (401). A left collection cavity (402) is formed in the left fixing ring (401). A plurality of air suction pipes (403) are installed on the side wall of the left collection cavity (402). A second air pump (404) is installed on the left fixing ring (401). A communication pipe (405) and a transmission pipe (406) are connected to the second air pump (404).

8. The fiber composite membrane melt spinning and stretching device according to claim 1, characterized in that, The soft baking assembly (5) includes a right fixing ring (501). A right collection cavity (502) is formed in the right fixing ring (501). An electric heating wire (503) is arranged in the right collection cavity (502). A plurality of air jet pipes (504) are installed on the side wall of the right collection cavity (502).

9. The fiber composite membrane melt spinning and stretching device according to claim 8, characterized in that, A flow guiding ring (505) is installed at one end of the right fixing ring (501) close to the right rotating group housing (202).

10. The fiber composite membrane melt spinning and stretching device according to claim 1, characterized in that, A control box (6) is installed on the extrusion device (101), and the control box (6) is electrically connected to the first air pump (210), the motor (216), the second air pump (404), and the electric heating wire (503).

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