Efficient cooling and shaping device for polyurethane film production

Abstract

The invention belongs to the technical field of polyurethane film processing equipment, and discloses an efficient cooling and shaping device for polyurethane film production, which comprises a chilling roller and a transmission shaft, the transmission shaft drives the chilling roller to rotate in the circumferential direction, and the efficient cooling and shaping device further comprises a wave groove arranged on the outer side of the transmission shaft; the sliding rod is arranged in the wave groove in a sliding manner; along with the circumferential rotation of the transmission shaft, the sliding rod is driven to move back and forth along the wave crests and the wave troughs of the wave grooves; the cleaning plate is connected with the sliding rod, and the cleaning side of the cleaning plate is attached to the position, where the polyurethane film is not attached, of the chilling roller. The sliding rods move in a reciprocating mode through the wave grooves, then the cleaning plates are driven to clean residual waste on the surface of the chilling roller in a reciprocating mode, the residual waste is sucked and collected through air flow in cooperation with the air holes and the air guide flow channels in the cleaning plates, the cleanliness of the surface of the chilling roller can be effectively removed and guaranteed, and therefore the attachment quality of a polyurethane film is improved; and air flow can accelerate heat dissipation on one side of the chilling roller, so that the heat dissipation efficiency of the surface of the chilling roller is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of polyurethane film processing equipment, and specifically relates to an efficient cooling and shaping device for polyurethane film production. Background Art

[0002] As a high-performance polymer material, polyurethane film has excellent wear resistance, hydrolysis resistance, high elasticity, and good biocompatibility, etc., and is widely used in many fields such as clothing, medical, and construction. In the production process of polyurethane film, cooling and shaping is an important link, which directly affects the quality and performance of polyurethane film.

[0003] Traditional cooling and shaping devices for polyurethane film production mostly adopt a simple chilled roll structure. In the actual production process, after long-term use, the surface of the chilled roll is likely to adhere to residual waste generated during the production of polyurethane film. If these wastes are not cleaned in time, it will not only affect the cooling efficiency of the chilled roll, resulting in uneven cooling of the polyurethane film, thereby affecting the product quality, but also may fall off due to excessive accumulation and mix into the product, causing product defects and affecting the forming quality and performance of the polyurethane film.

[0004] Therefore, an efficient cooling and shaping device for polyurethane film production is proposed to solve the above problems. Summary of the Invention

[0005] To solve the problems raised in the above background art, the present invention provides an efficient cooling and shaping device for polyurethane film production.

[0006] To achieve the above object, the present invention provides the following technical solution: An efficient cooling and shaping device for polyurethane film production, including a chilled roll and a transmission shaft, the transmission shaft drives the circumferential rotation of the chilled roll, and further includes: Wave grooves, provided on the outer side of the transmission shaft; Slide rods, slidably provided in the wave grooves; Rotating circumferentially along with the transmission shaft, driving the slide rods to reciprocate along the wave crests and wave troughs of the wave grooves; Cleaning plates, connected to the slide rods and the cleaning sides are in contact with the non-polyurethane film-attached parts of the chilled roll; The cleaning plates are hollow inside and have air holes communicated with the surface; Air guide channels, communicated with the cleaning plates; Reciprocating along with the slide rods, driving the cleaning plates to reciprocate to clean the residual waste on the surface of the chilled roll, and sucking the residual waste through the air holes along with the air guide channels.

[0007] In the above technical solution, preferably, the cleaning plates include: Installation sleeves, connected to the slide rods and hollow inside; The surface of the installation sleeve is provided with a cleaning brush and air holes; A filter box, which is hollow inside and is respectively communicated with the installation sleeve and the air guide channel; A filter plate is arranged in the filter box; Along with the air guide channel, air on the surface of the chill roll is sucked through the air holes, and residual waste materials are collected and filtered by the filter plate along the gas flow direction.

[0008] In the above technical solution, preferably, it further includes: A jet pipe, the jet end of which faces downward at the place where the polyurethane fiber filaments are received by the chill roll; An air guide pipe, the two ends of which are respectively communicated with the jet pipe and the air guide channel; A refrigerating sheet for cooling the flowing air is arranged in the air guide channel; Along with the air guide channel, the cooling air flow is guided to flow through the air guide pipe to the jet pipe and is ejected onto the surface of the chill roll.

[0009] In the above technical solution, preferably, the air guide channel includes: An axial flow fan, one end of which is communicated with the cleaning plate; A cooling cylinder, which is communicated with the other end of the axial flow fan and is also communicated with the air guide pipe; The refrigerating sheet is arranged in the cooling cylinder.

[0010] In the above technical solution, preferably, the inside of the cooling cylinder includes: A first cavity and a second cavity, the refrigerating end and the heating end of the refrigerating sheet are respectively located in the first cavity and the second cavity; Wherein, the first cavity is communicated with the air guide pipe, and the second cavity is communicated with the exhaust pipe; The exhaust end of the exhaust pipe faces the place where the polyurethane film detaches from the chill roll for transmission; Along with the air flow is split and enters the first cavity and the second cavity, and is respectively refrigerated and heated and then introduced into the air guide pipe and the exhaust pipe.

[0011] In the above technical solution, preferably, the first cavity includes an upper cavity and a lower cavity, and the second cavity is located in the middle; The air guide pipe is communicated with the upper cavity and the lower cavity, and the exhaust pipe is communicated with the second cavity; A partition board is arranged between the upper cavity, the lower cavity and the second cavity, and the refrigerating sheet is penetrated and arranged in the partition board; The refrigerating end and the heating end of the refrigerating sheet respectively face the upper cavity, the lower cavity and the second cavity.

[0012] In the above technical solution, preferably, vertical flow guiding plates and triangular flow guiding plates are respectively arranged in the upper cavity, the lower cavity and the second cavity. There is a flow guiding area between the vertical flow guiding plate and the partition plate. The inclined surfaces of the triangular flow guiding plates face the heating ends of the two cooling fins on both sides respectively.

[0013] In the above technical solution, preferably, it further includes: A fixed box with a hollow interior; An arc-shaped sleeve fixedly arranged on the transmission shaft; A pushing wheel abuts against the arc-shaped sleeve, and the other end penetrates through the fixed box and is connected to the inner wall of the fixed box through an elastic member; A motion conversion member located in the fixed box and connected to the pushing wheel and the air jet pipe; The connection ends of the air jet pipe and the air guide pipe are rotatably connected and located in the fixed box; As the transmission shaft drives the arc-shaped sleeve to rotate, the pushing wheel is pushed to move in the direction close to / away from the fixed box, driving the motion conversion member to drive the air jet pipe to rotate reciprocally around its own axis.

[0014] In the above technical solution, preferably, the motion conversion member includes: A toothed plate arranged on the pushing wheel; A gear arranged on the outside of the air jet pipe and meshing with the toothed plate.

[0015] In the above technical solution, preferably, it further includes: A water bath tank. The chilling roller is rotatably arranged in the water bath tank. The fixed box and the air flow guide channel are both arranged on the water bath tank. The sliding rod slides on the water bath tank; A transmission motor, and the output end is connected to the transmission shaft through a transmission belt.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: In the present invention, the sliding rod reciprocates through the wave groove, and then drives the cleaning plate to reciprocally clean the residual waste on the surface of the chilling roller. And in cooperation with the air holes on the cleaning plate and the air flow guide channel, the residual waste is sucked by the air flow, which can effectively remove and ensure the cleanliness of the surface of the chilling roller, thereby improving the adhesion quality of the polyurethane film. Moreover, the air flow will also accelerate the heat dissipation on one side of the chilling roller, improving the heat dissipation efficiency of the surface of the chilling roller.

[0017] Furthermore, through the flow channel design of the first cavity and the second cavity in the cooling cylinder of the air flow guide channel, in cooperation with the cold and heat generated by the cooling fins, the air flow is respectively refrigerated and heated, and then introduced into the air guide pipe and the exhaust pipe to flow to the lower part of the place where the chilling roller receives the polyurethane fiber filaments for cooling and the place where the polyurethane film is separated from the chilling roller for pre-drying. Through the cooling end, the polyurethane fiber filaments are quickly solidified and formed to improve the strength and toughness. The pre-drying removes the residual moisture, stabilizes the performance of the film material, and improves the forming quality of the polyurethane film.

[0018] Moreover, through the settings of the fixed box, arc-shaped sleeve, driving wheel, elastic member and motion conversion member, while the transmission shaft drives the arc-shaped sleeve to rotate, the air injection pipe can be synchronously driven to rotate circumferentially and reciprocally around its own axis, realizing the multi-angle cooling air injection of the air injection pipe, and improving the uniformity effect of the surface cooling of the chill roll at the cooling end. Brief Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a three-dimensional structural diagram of another angle of the present invention; Figure 3 is a three-dimensional structural diagram of the chill roll, wave groove and cleaning plate of the present invention; Figure 4 is a three-dimensional structural diagram of the air guide channel, air injection pipe and air guide pipe of the present invention; Figure 5 is a three-dimensional structural diagram of the transmission shaft, arc-shaped sleeve and driving wheel of the present invention; Figure 6 is a three-dimensional sectional structural diagram of the mounting sleeve, cleaning brush, filter box and filter plate of the present invention; Figure 7 is a sectional structural diagram of the temperature reduction cylinder of the present invention; Figure 8 is a sectional structural diagram of the fixed box of the present invention.

[0020] In the figure: 1, chill roll; 2, transmission shaft; 3, wave groove; 4, slide bar; 5, cleaning plate; 51, mounting sleeve; 52, cleaning brush; 53, filter box; 54, filter plate; 6, air hole; 7, air guide channel; 71, axial flow fan; 72, temperature reduction cylinder; 721, first cavity; 722, second cavity; 8, air injection pipe; 9, air guide pipe; 10, refrigeration sheet; 11, exhaust pipe; 12, upper cavity; 13, lower cavity; 14, partition board; 15, vertical flow guide plate; 16, triangular flow guide plate; 17, flow guide area; 18, fixed box; 19, arc-shaped sleeve; 20, driving wheel; 21, elastic member; 22, motion conversion member; 221, toothed plate; 222, gear; 23, water bath box; 24, driving motor; 25, transmission belt. Detailed Embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] AsFigure 1 , Figure 5 , Figure 6 As shown in Figure 6 , the present invention provides an efficient cooling and shaping device for the production of polyurethane films, including a quenching roll 1 and a transmission shaft 2. The transmission shaft 2 drives the circumferential rotation of the quenching roll 1. It further includes: A wave groove 3 provided on the outer side of the transmission shaft 2; A slide bar 4 slidably arranged in the wave groove 3; Rotating circumferentially along with the transmission shaft 2, driving the slide bar 4 to reciprocate between the wave crests and wave troughs of the wave groove 3; This mechanical structure converts the rotational motion of the transmission shaft 2 into the linear reciprocating motion of the slide bar 4, thereby driving the cleaning plate 5 connected thereto to reciprocate on the surface of the quenching roll 1, realizing the removal of residual waste on the surface of the quenching roll 1; A cleaning plate 5, connected to the slide bar 4 and the cleaning side thereof is in contact with the part of the quenching roll 1 where no polyurethane film is attached; The cleaning plate 5 is hollow inside and has air holes 6 communicated with the surface; An air guide channel 7 communicated with the cleaning plate 5; Reciprocating along with the slide bar 4, driving the cleaning plate 5 to reciprocate to clean the residual waste on the surface of the quenching roll 1, and sucking the residual waste through the air holes 6 along with the air guide channel 7.

[0023] While the cleaning plate 5 reciprocally sweeps, the air guide channel 7 generates suction through the air holes 6 to achieve cleaning and sucking at the same time, avoiding the waste from drifting and mixing into the polyurethane fiber filaments or film materials on the surface of the quenching roll 1, and ensuring the stable forming quality of the polyurethane film.

[0024] And when sucking air, the flowing air will exchange heat with the surface of the quenching roll 1 to take away part of the heat, accelerating the heat dissipation process of the quenching roll 1, maintaining the stable temperature of the quenching roll 1, and avoiding affecting the forming quality of the polyurethane film due to temperature.

[0025] As Figure 3 , Figure 6 shown, the cleaning plate 5 includes: An installation sleeve 51, connected to the slide bar 4 and hollow inside; The surface of the installation sleeve 51 is provided with a cleaning brush 52 and air holes 6; Specifically, the air holes 6 are distributed outside the cleaning brush 52 to avoid the situation of missed suction; A filter box 53, hollow inside and respectively communicated with the installation sleeve 51 and the air guide channel 7; A filter plate 54 is provided inside the filter box 53; And the filter box 53 is provided with an opening and closing door, and the opening and closing door is exactly above the filter plate 54. When it is necessary to clean the waste accumulated on the filter plate 54, just open the opening and closing door, and the filter plate 54 can be cleaned or replaced; The air guiding channel 7 sucks the air on the surface of the chill roll 1 through the air holes 6, and collects the residual waste and filters it along the gas flow direction to the filter plate 54.

[0026] After the air guiding channel 7 sucks the air and waste on the surface of the chill roll 1 through the air holes 6, the air flow containing waste enters the filter box 53, and the waste particles are effectively intercepted by the filter plate 54 for gas-solid separation. The purified air continues to enter the subsequent operation through the air guiding channel 7.

[0027] As Figure 2 、 Figure 4 shown, it further includes: A jet pipe 8 with the jet end facing downward at the place where the polyurethane fiber filaments are received by the chill roll 1; An air guiding pipe 9 with both ends respectively connected to the jet pipe 8 and the air guiding channel 7; A refrigerating sheet 10 for cooling the flowing air is provided in the air guiding channel 7; The air guiding channel 7 guides the cooling air flow to flow through the air guiding pipe 9 to the jet pipe 8 and spray it onto the surface of the chill roll.

[0028] The jet pipe 8 sprays the air flow cooled by the refrigerating sheet 10 onto the lower part of the place where the polyurethane fiber filaments are received by the chill roll 1. It mainly uses the low-temperature air flow to reduce the temperature around the fiber filaments, promoting the rapid solidification and molding of the polyurethane fiber filaments, enabling the internal structure of the fiber filaments to be more compact and uniform, avoiding deformation, thus improving the strength and toughness of the fiber filaments, and at the same time, the cooling air flow also assists in the heat dissipation of the chill roll 1, reducing the heat dissipation pressure of the chill roll 1.

[0029] As Figure 2 、 Figure 4 shown, the air guiding channel 7 includes: An axial flow fan 71 with one end connected to the cleaning plate 5; A cooling cylinder 72 connected to the other end of the axial flow fan 71 and also connected to the air guiding pipe 9; The refrigerating sheet 10 is arranged in the cooling cylinder 72.

[0030] The axial flow fan 71 can generate a stable air flow suction force, driving the air to suck the residual waste swept down through the air holes 6 along with the air flow. The introduced air is temperature-controlled by the refrigerating sheet 10 and then introduced into the air guiding pipe 9 and the jet pipe 8, realizing the effective conversion of the air from the cleaning function to the cooling function, ensuring the suction effect of the cleaning plate 5 on the waste on the surface of the chill roll 1, and providing the required temperature-controlled air flow for the chill roll 1, which is more energy-saving and efficient.

[0031] As Figure 7 shown, the inside of the cooling cylinder 72 includes: A first cavity 721 and a second cavity 722, and the refrigerating end and the heating end of the refrigerating sheet 10 are respectively located in the first cavity 721 and the second cavity 722; Among them, the first cavity 721 is communicated with the air duct 9, and the second cavity 722 is communicated with the exhaust pipe 11; The exhaust end of the exhaust pipe 11 faces the place where the polyurethane film detaches from the chill roll 1; It enters the first cavity 721 and the second cavity 722 along with the air flow diversion, is refrigerated and heated respectively, and then is introduced into the air duct 9 and the exhaust pipe 11.

[0032] When the Peltier element 10 works, it will generate cold and heat at the same time. Therefore, through the cavity separation setting of the cooling cylinder 72, the cold and heat generated by the Peltier element 10 can be effectively utilized. The cold air is used to cool the fiber filaments, and the hot air is used to dry the polyurethane film, which is more energy-efficient and efficient; The hot air flow is discharged towards the place where the polyurethane film detaches from the chill roll 1, which can moderately remove the residual moisture on the surface and inside of the film, prevent the polyurethane film from being poorly bonded due to residual moisture, optimize the physical properties of the film material, and improve the forming effect of the polyurethane film.

[0033] The first cavity 721 includes an upper cavity 12 and a lower cavity 13, and the second cavity 722 is located in the middle; The air duct 9 is communicated with the upper cavity 12 and the lower cavity 13, and the exhaust pipe 11 is communicated with the second cavity 722; A partition 14 is provided between the upper cavity 12, the lower cavity 13 and the second cavity 722, and the Peltier element 10 is disposed through the partition 14; The cooling end and the heating end of the Peltier element 10 face the upper cavity 12, the lower cavity 13 and the second cavity 722 respectively.

[0034] Through the partition 14, the cold and hot flow spaces are further reasonably allocated, the mutual interference and heat transfer between the cold and hot air are reduced, so that the air can fully exchange heat with the cooling / heating end, obtain more effective heating, and ensure that the cold and hot air flow stably in their respective cavities, avoiding problems such as uneven cooling / drying.

[0035] Vertical flow guide plates 15 and triangular flow guide plates 16 are respectively provided in the upper cavity 12, the lower cavity 13 and the second cavity 722. There is a flow guide area 17 between the vertical flow guide plate 15 and the partition 14, and the inclined surfaces of the triangular flow guide plates 16 face the heating ends of the two Peltier elements 10 on both sides respectively.

[0036] The vertical flow guide plates 15 and the triangular flow guide plates 16 are used to change the flow direction of the air flow in the cavity, so that the air flow entering the upper cavity 12, the lower cavity 13 and the second cavity 722 can flow along a specific path, promote the air flow to fully contact with the cooling / heating end of the Peltier element 10, and also extend the air flow path to fully exchange heat with the cavity, ensure the stability of the cooling / heating effect, avoid local overheating or overcooling phenomena, and provide stable cold / hot air flow for drying the polyurethane film and cooling the fiber filaments.

[0037] like Figure 4 , Figure 8 As shown, it also includes: The fixed box 18 is hollow inside; The arc sleeve 19 is fixed on the transmission shaft 2; The arc sleeve 19 is in the shape of a plum blossom with ups and downs along the circumference of the transmission shaft 2 toward the outside; The driving wheel 20 is in contact with the arc sleeve 19, and the other end thereof passes through the fixed box 18 and is connected to the inner wall of the fixed box 18 via an elastic member 21; Among them, the push wheel 20 is provided with a slide plate at one end that passes through the fixed box 18, the slide plate is adapted to the shape of the inner cavity of the fixed box 18, and an elastic member 21 is provided between the slide plate and the inner wall of the fixed box 18; The elastic member 21 can be a spring or a spring sheet, which can be selected by the operator according to the actual situation; The shape and structure of the arc sleeve 19 can drive the driving wheel 20 to move back and forth in turn during the rotation process; The motion conversion member 22 is located in the fixed box 18 and is connected to the driving wheel 20 and the air injection pipe 8; The connecting ends of the air injection pipe 8 and the air guide pipe 9 are rotatably connected and are located in the fixed box 18; The ends of the air injection pipe 8 and the air guide pipe 9 are also rotatably connected to the fixed box 18; As the transmission shaft 2 drives the arc sleeve 19 to rotate, the driving wheel 20 is driven to move in the direction of approaching / moving away from the fixed box 18, and the motion conversion member 22 drives the jet pipe 8 to reciprocate around its own axis.

[0038] The above design mainly enables the cooling airflow ejected from the jet pipe 8 to cover a larger surface area of the chilled roller 1, avoiding the airflow dead zone that may occur when the jet is ejected in a single direction. The airflow forms a convection pattern on the surface of the chilled roller 1 to avoid uneven cooling in local areas. In the process of the chilled roller 1 receiving the polyurethane fiber filaments, multi-angle jetting can ensure that the fiber filaments can be evenly cooled at different positions, thereby improving the strength and toughness of the fiber filaments and improving the consistency of product quality.

[0039] Furthermore, the above structure does not require an additional power device for driving the air jet pipe 8 to rotate, and the driving is achieved through the rotational power of the transmission shaft 2 .

[0040] like Figure 1 , Figure 2 As shown, the motion conversion member 22 includes: The tooth plate 221 is disposed on the driving wheel 20 and is slidably disposed in the fixed box 18; The gear 222 is disposed outside the air injection pipe 8 and meshes with the gear plate 221 .

[0041] Through the engagement of the toothed plate 221 and the gear 222, the linear motion of the driving wheel 20 is converted into the circumferential rotational motion of the air jet pipe 8 around its own axis, meeting the requirement of multi-angle jet cooling for the surface of the chill roll.

[0042] As shown in the figure, it further includes: A water bath tank 23, the chill roll 1 is rotatably arranged in the water bath tank 23, the fixed box 18 and the air guide channel 7 are both arranged on the water bath tank 23, and the slide bar 4 is slidably arranged on the water bath tank 23; A drive motor 24, the output end is connected to the transmission shaft 2 through a transmission belt 25.

[0043] The working principle and usage process of the present invention: The drive motor 24 drives the transmission shaft 2 to rotate through the transmission belt 25, and the chill roll 1 rotates circumferentially accordingly. As the transmission shaft 2 rotates, the wave groove 3 drives the slide bar 4 to reciprocate, and then drives the cleaning plate 5 to reciprocate to continuously clean the residual waste on the surface of the chill roll 1 through the cleaning brush 52. The axial flow fan 71 sucks air and waste through the air hole 6 and flows to the filter box 53 for filtration. The filtered air flows into the cooling cylinder 72, and the flowing air currents respectively enter the upper cavity 12, the lower cavity 13 and the second cavity 722; The cooling end of the Peltier element 10 is located in the upper cavity 12 and the lower cavity 13, so that the air flowing through the upper cavity 12 and the lower cavity 13 contacts the cooling end along the flow guide area 17 and is cooled to form a cooling air current, which is transported to the air jet pipe 8 through the air guide pipe 9 and sprayed below the place where the polyurethane fiber filaments are received by the chill roll 1, promoting the rapid solidification and forming of the polyurethane fiber filaments; The heating end of the Peltier element 10 is located in the second cavity 722, and the air flowing through here is guided by the triangular body flow guide plate 16 to contact the heating end and is heated, and is sprayed onto the polyurethane film through the exhaust pipe 11 at the place where the polyurethane film is separated from the chill roll 1 for pre-drying; During this process, the transmission shaft 2 drives the arc-shaped sleeve 19 to rotate, pushes the driving wheel 20 to move, the elastic member 21 is compressed, and through the transmission of the toothed plate 221 and the gear 222, the air jet pipe 8 rotates circumferentially and reciprocally around its own axis to spray cooling air at multiple angles, that is, the whole operation is completed.

[0044] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0045] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An efficient cooling and shaping device for polyurethane film production, comprising a chill roll (1) and a transmission shaft (2), wherein the transmission shaft (2) drives the chill roll (1) to rotate circumferentially, and is characterized in that, It further includes: A wave groove (3) is provided on the outer side of the transmission shaft (2); A slide bar (4) is slidably arranged in the wave groove (3); As the transmission shaft (2) rotates circumferentially, the slide bar (4) is driven to reciprocate along the crests and troughs of the wave groove (3); A cleaning plate (5) is connected to the slide bar (4), and the cleaning side thereof is attached to the part of the chill roll (1) where the polyurethane film is not attached; The cleaning plate (5) is hollow inside and has air holes (6) communicating with its surface; An air guiding channel (7) is connected to the cleaning plate (5); As the slide bar (4) reciprocates, the cleaning plate (5) is driven to reciprocate to clean the residual waste on the surface of the chill roll (1), and the residual waste is sucked in through the air holes (6) along with the air guiding channel (7).

2. The high-efficiency cooling and shaping device for polyurethane film production according to claim 1, wherein: The cleaning plate (5) includes: A mounting sleeve (51) is connected to the slide bar (4) and is hollow inside; The surface of the mounting sleeve (51) is provided with a cleaning brush (52) and air holes (6); A filter box (53) is hollow inside and is respectively connected to the mounting sleeve (51) and the air guiding channel (7); A filter plate (54) is arranged in the filter box (53); As the air guiding channel (7) sucks the air on the surface of the chill roll (1) through the air holes (6), the residual waste is collected and filtered by the filter plate (54) along the gas flow direction.

3. The high-efficiency cooling and shaping device for polyurethane film production according to claim 1, characterized in that: It further includes: An air jet pipe (8) with its jet end facing downward at the place where the polyurethane fiber filaments are received by the chill roll (1); An air guiding pipe (9) with both ends respectively connected to the air jet pipe (8) and the air guiding channel (7); A refrigerating sheet (10) for cooling the flowing air is arranged in the air guiding channel (7); As the air guiding channel (7) guides the cooled air to flow through the air guiding pipe (9) and be ejected from the air jet pipe (8) onto the surface of the chill roll.

4. The high-efficiency cooling and shaping device for polyurethane film production according to claim 3, characterized in that: The air guiding channel (7) includes: An axial flow fan (71) with one end connected to the cleaning plate (5); A cooling cylinder (72) is connected to the other end of the axial flow fan (71) and is also connected to the air guiding pipe (9); The refrigerating sheet (10) is arranged in the cooling cylinder (72).

5. The high-efficiency cooling and shaping device for the production of polyurethane films according to claim 4, wherein: The inside of the cooling cylinder (72) includes: A first cavity (721) and a second cavity (722), and the refrigerating end and the heating end of the refrigerating sheet (10) are respectively located in the first cavity (721) and the second cavity (722); Wherein, the first cavity (721) is connected to the air guiding pipe (9), and the second cavity (722) is connected to the exhaust pipe (11); The exhaust end of the exhaust pipe (11) faces the place where the polyurethane film detaches from the chill roll (1); As the air flow is split into the first cavity (721) and the second cavity (722), and is respectively refrigerated and heated and then introduced into the air guiding pipe (9) and the exhaust pipe (11).

6. The high-efficiency cooling and shaping device for polyurethane film production according to claim 5, characterized in that: The first cavity (721) includes an upper cavity (12) and a lower cavity (13), and the second cavity (722) is located in the middle; The air guiding pipe (9) is connected to the upper cavity (12) and the lower cavity (13), and the exhaust pipe (11) is connected to the second cavity (722); A partition plate (14) is arranged between the upper cavity (12), the lower cavity (13) and the second cavity (722), and the refrigerating sheet (10) is penetrated and arranged in the partition plate (14); The cooling end and the heating end of the thermoelectric cooler (10) face the upper cavity (12), the lower cavity (13) and the second cavity (722) respectively.

7. The high-efficiency cooling and shaping device for polyurethane film production according to claim 6, characterized in that: The upper cavity (12), the lower cavity (13) and the second cavity (722) are respectively provided with a vertical deflector (15) and a triangular deflector (16). A flow guiding area (17) is formed between the vertical deflector (15) and the partition plate (14). The inclined surfaces of the triangular deflectors (16) face the heating ends of the two side thermoelectric coolers (10).

8. An efficient cooling and shaping device for polyurethane film production according to any one of claims 3-7, characterized in that: It further includes: A fixed box (18) with a hollow interior; An arc-shaped sleeve (19) fixedly arranged on the transmission shaft (2); A pushing wheel (20) abuts against the arc-shaped sleeve (19), and the other end penetrates through the fixed box (18) and is connected with the inner wall of the fixed box (18) through an elastic member (21); A motion conversion member (22) located inside the fixed box (18) and connected with the pushing wheel (20) and the air injection pipe (8); The connection ends of the air injection pipe (8) and the air guide pipe (9) are rotatably connected and located inside the fixed box (18); As the transmission shaft (2) drives the arc-shaped sleeve (19) to rotate, the pushing wheel (20) is pushed to move in the direction close to / away from the fixed box (18), driving the motion conversion member (22) to drive the air injection pipe (8) to rotate reciprocally around its own axis.

9. The high-efficiency cooling and shaping device for polyurethane film production according to claim 8, characterized in that: The motion conversion member (22) includes: A toothed plate (221) arranged on the pushing wheel (20); A gear (222) arranged on the outer side of the air injection pipe (8) and meshing with the toothed plate (221).

10. An efficient cooling and shaping device for polyurethane film production according to claim 8, characterized in that: It further includes: A water bath tank (23). The chilling roller (1) is rotatably arranged inside the water bath tank (23). The fixed box (18) and the air flow channel (7) are both arranged on the water bath tank (23). The slide rod (4) is slidably arranged on the water bath tank (23); A transmission motor (24) whose output end is connected with the transmission shaft (2) through a transmission belt (25).

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