Efficient no-damage membrane tube surface hot air water removal device

Abstract

The utility model discloses an efficient damage-free membrane tube surface hot air water removal device which is arranged on the periphery of a membrane tube in a surrounding mode and comprises a hot air device, the hot air device is provided with an annular wall cavity, the interior of the annular wall cavity is hollow to form an annular cavity, a plurality of air outlets are formed in the inner side of the annular wall cavity and communicated with the annular cavity, and the membrane tube is arranged in the annular cavity. The air outlet direction of the air outlet faces the outer surface of the membrane tube; and the heating device is used for heating airflow entering the annular cavity to enable the air outlet to spray out hot air. A hot air knife is used for drying on the two sides of a film pipe at the angle of 45 degrees in an existing developed drying oven, compared with a physical wiping and air heating drying mode, the surface of the film can be cleaner and smoother, and then blown secondary bubbles are better in stability and not prone to breakage. And the surface of the rolled finished film is smoother and free of watermarks. The product quality can be effectively improved, and meanwhile loss generated in the production process is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of nylon material processing equipment, in particular to a high-efficiency hot-air water removal device without damaging the surface of a membrane tube. Background Art

[0002] In the shrink film production process, removing the residual water brought out from the water tank is a key step before the second bubble, which determines the quality of the second bubble and the finished film. The existing silicone strips mainly rely on physical wiping methods to remove the residual water brought out from the water tank and straighten the film tube.

[0003] In the film blowing process, especially the two-bubble or three-bubble film blowing process, such as the application number: CN202111654818.1 discloses a process for preparing a nylon surface tubular film by a three-bubble molding method, which is characterized in that it includes the following steps in sequence: one bubble extrude the tubular film through a multi-layer co-extrusion film head and inflate the film bubble, two bubbles heat and inflate the tubular film, three bubbles shape the tubular film, and roll up the tubular film; the two-bubble heating and inflating tubular film process also includes humidifying and toughening the surface of the tubular film, and the three-bubble shaping process includes a drying and heating step for the surface of the tubular film; the humidification and toughening treatment includes using alcohol to toughen the surface of the tubular film.

[0004] The first formed membrane tubes all use a water cooling process, and the first formed membrane tubes need to be surface treated. The quality of the first membrane tube surface directly determines the quality level of the finished film. At present, the surface of the membrane tube is generally wiped with silicone strips, flannel or felt. This method directly contacts the surface of the membrane tube with the wiping material, which can easily cause surface scratches, uneven forces leading to uneven membrane tubes, and uneven heat on the surface of the wiping material, which causes uneven heating of the film. This leads to uneven secondary molding of the film, difficulty in molding, rupture caused by surface scratches, and large differences in strength.

[0005] In view of the above, it is necessary to propose an efficient and non-damaging membrane tube surface hot air dewatering device to solve the above problems. Utility Model Content

[0006] The utility model aims to solve the above technical problems and to provide a high-efficiency and non-damaging hot air water removal device for the membrane tube surface.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-efficiency and non-damaging hot air dehydration device for the membrane tube surface, the hot air dehydration device is arranged in a surrounding shape on the outer periphery of the membrane tube, and includes a hot air device, the hot air device has an annular wall cavity, the annular wall cavity is hollow to form an annular cavity, and a plurality of air outlets are provided on the inner side of the annular wall cavity, the air outlets are connected to the annular cavity, and the air outlet direction of the air outlet is toward the outer surface of the membrane tube; it also includes a heating device, and the heating device heats the air flow entering the annular cavity so that the air outlet sprays hot air.

[0008] Furthermore, it also includes an exhaust mechanism, which is arranged on the upper side of the hot air device. The exhaust device includes an exhaust chamber, which is arranged in a ring shape. An exhaust port is opened on the annular inner wall of the exhaust chamber. It also includes a vacuum pump, which is connected to the exhaust chamber through an air duct to form a negative pressure inside the exhaust chamber.

[0009] Furthermore, it also includes an iris mechanism arranged on the upper side of the exhaust mechanism, the iris mechanism has a wind shield ring with adjustable diameter, the inner edge of the wind shield ring is arranged close to the outer wall of the membrane tube, and the wind shield ring enables the hot air dehydration device to form a relatively closed drying chamber on its lower side.

[0010] Furthermore, the angle between the air outlet direction and the vertical direction is 30-60°.

[0011] Furthermore, the air outlet is connected with an air duct, the end of the air duct is connected with an arc-shaped open tube, the arc-shaped open tube is arranged in an arc-shaped structure, the upper edge of the arc-shaped open tube is provided with an arc-shaped air outlet, and the air duct is movably connected to the air outlet.

[0012] Furthermore, the air outlet is a long hole arranged in a spiral shape, and multiple air outlets are arranged around the axis. The annular wall cavity includes a fixed outer wall and a rotating inner wall. The air outlet is arranged on the rotating inner wall, and the rotating inner wall rotates around the central axis of the annular wall cavity, so that the air outlet rotates around the membrane tube.

[0013] Furthermore, the lower end of the rotating inner wall extends downward from the fixed outer wall to form a driving end, and the lower end of the fixed outer wall is provided with a rotating driving part that matches the driving end.

[0014] Furthermore, an air guide cavity is connected to the spiral air outlet, and the air guide cavity is inclined toward the upper side.

[0015] Furthermore, the heating device is an electric heating wire or steam heating.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The oven we are developing now uses a hot air knife to dry the two sides of the film tube at an angle of 45°. Compared with physical wiping, the air heating and drying method can make the film surface cleaner and smoother, and the second bubble blown out will have better stability and will not easily break. The surface of the finished film after winding is smoother and has no watermarks. It can effectively improve the quality of the product and reduce the loss in the production process.

[0018] The utility model designs a heating oven, wherein a hot air blowing port is built in the oven, and air is blown toward the surface of the film tube in various directions, and the wind speed and the wind temperature are adjustable, so as to remove the moisture remaining on the surface of the film tube during cooling, so as to achieve the effect of uniform air volume and temperature for the film tube in various directions, and no contact and no damage, so that the surface of the film tube is dry and heated evenly, and in the subsequent second bubbling and molding, the purpose of reducing the difficulty of the second bubble molding and improving various uniformities is achieved, and it is particularly suitable for the molding of films with polar materials on the surface.

[0019] Advantages of the utility model:

[0020] 1. Design a heating processor outside the membrane tube to generate hot air, which can be heated by steam or electricity

[0021] 2. There are 4-8 air outlets on the four sides of the membrane tube, evenly distributed, with consistent wind direction and adjustable wind direction.

[0022] 3. The angle between each hot air outlet and the membrane tube is 30-60 degrees, so that the hot air can treat the membrane tube surface more evenly.

[0023] 4. The heater is made of stainless steel, and the air outlet is made of stainless steel or aluminum alloy;

[0024] 5. The device is designed with air outlet angle adjustment device, air temperature adjustment device and air volume adjustment device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the external structure of a highly efficient and non-damaging membrane tube surface hot air water removal device of the utility model;

[0026] Figure 2 It is a longitudinal cross-sectional schematic diagram of a high-efficiency and non-damaging hot air water removal device for the membrane tube surface of the utility model;

[0027] Figure 3 This is an axonometric diagram of a highly efficient and non-damaging membrane tube surface hot air water removal device of the utility model;

[0028] Figure 4 This is a schematic diagram of the internal structure of the hot air dehumidification device of the fourth embodiment of the utility model;

[0029] Figure 5 This is a schematic diagram of the structure of the adjustable air duct in the third embodiment of the present utility model;

[0030] Figure 6 This is a schematic diagram of the air outlet provided with an air guide cavity in the third embodiment of the utility model;

[0031] Figure 7 An exploded view of the iris mechanism of the utility model;

[0032] In the figure: 1. hot air dewatering device; 2. water tank; 3. film tube; 4. film blowing die head; 5. annular wall cavity; 6. air outlet; 7. annular cavity; 8. heating device; 9. exhaust mechanism; 10. exhaust cavity; 11. exhaust port; 12. vacuum pump; 13. iris mechanism; 14. wind shield; 15. baking cavity; 16. air duct; 17. arc-shaped opening tube; 18. arc-shaped air outlet; 19. fixed outer wall; 20. rotating inner wall; 21. driving end; 22. rotating driving part; 23. air guide cavity; 24. fixed ring; 25. rotating ring; 26. arc-shaped membrane petal; 27. convex rod; 28. radial guide rail; 29. ​​positioning hole; 30. driving rod. DETAILED DESCRIPTION

[0033] The technical solution of the present invention will be clearly and completely described below in conjunction with 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.

[0034] A highly efficient and non-damaging membrane tube surface hot air dewatering device, such as Figure 1 , 3 As shown, the first formed film tube 3 is cooled by water, and a water tank 2 is arranged on the periphery of the film tube 3 to cool and shape the film tube 3. During the film blowing process, the film tube 3 moves downward, and the surface of the film tube 3 is humid. If the surface of the first formed film tube 3 is not treated, the quality of the surface of the first film tube 3 directly determines the quality level of the finished film. Therefore, a hot air dehumidification device 1 is arranged on the lower side of the water tank 2. Specifically, Figure 2 , 3 As shown, the hot air dehydration device 1 is arranged in a surrounding shape on the periphery of the membrane tube 3, which includes a hot air device, which has an annular wall cavity 5, so that a surrounding air outlet mode can be formed around the membrane tube 3, and an annular cavity 7 is formed in a hollow shape in the annular wall cavity 5, and the external input is sent into the annular cavity 7 through the air duct 16, and a plurality of air outlets 6 are provided on the inner side of the annular wall cavity 5, and the air outlet 6 is connected to the annular cavity 7, and the air outlet direction of the air outlet 6 is toward the outer surface of the membrane tube 3; and a heating device 8 is also included, and the heating device 8 heats the air flow entering the annular cavity 7 so that the air outlet 6 sprays hot air. Compared with physical wiping, the air heating and drying method of this device can make the membrane surface cleaner and smoother, and then the second bubble blown out will have better stability and is not easy to break. The surface of the finished film after winding is smoother and has no watermarks. It can effectively improve the quality of the product and reduce the loss generated during the production process.

[0035] In addition, the angle of the wind direction blown out of the air outlet 6 in the device relative to the surface of the membrane tube 3 is adjustable, and the angle between each hot air outlet 6 and the membrane tube 3 is 30-60 degrees, so that the hot air can treat the surface of the membrane tube 3 more evenly. Figure 2As shown, the hot air blown upward is in tangential contact with the surface of the membrane tube 3, so as to better dry the water vapor attached to the surface of the membrane tube 3; and preferably, the hot air knife formed by the hot air blown out from the air outlet 6 currently in use dries the two sides of the membrane tube 3 at an angle of 45°.

[0036] In actual use, the wind in the annular cavity 7 is preheated by the heating device 8, and the heating device 8 is an electric heating wire or steam heating; Figure 2 As shown, an electric heating wire can be arranged in the heating device 8 to directly contact and heat the incoming airflow, or steam can be used and a heat exchanger can be used to perform a heating operation separated from the gas. A fan is arranged at the front end of the heating device 8, and the air volume and wind speed can be adjusted by controlling the power of the fan, thereby controlling the drying process of the surface of the membrane tube 3.

[0037] The purpose is to remove the moisture remaining on the surface of the film tube 3 during cooling, so as to achieve the effect of uniform air volume, consistent temperature, non-contact and non-damage to the film tube 3 in different directions, so that the surface of the film tube 3 is dry and heated evenly. In the subsequent second foaming and molding, the difficulty of the second foaming molding is reduced and the uniformity of various aspects is better. It is particularly suitable for the molding of thin films with polar materials on the surface. The hot air is used to remove the moisture on the surface of the film tube 3 without contacting the film tube 3, so that the surface of the film tube 3 can be kept intact.

[0038] Embodiment 1:

[0039] Also includes an exhaust mechanism 9, such as Figure 2 As shown, the exhaust mechanism 9 is arranged on the upper side of the hot air device, and the exhaust device includes an exhaust chamber 10, which is arranged in an annular shape, and an exhaust port 11 is opened on the annular inner wall of the exhaust chamber 10, and also includes a vacuum pump 12, and the vacuum pump 12 is connected to the exhaust chamber 10 through an air duct 16 to form a negative pressure inside the exhaust chamber 10. The exhaust mechanism 9 is connected to the annular wall cavity 5 and arranged above it, and the hot air is first sent out from the air outlet 6 to blow dry the surface of the film tube 3, and then the blown hot air is extracted by the exhaust device, thereby forming a wind cycle. The arrangement of this kind of wind circulation in the hot air dehydration device 1 can avoid the influence of the wind caused by the device during the film blowing process on other devices.

[0040] Implementation 2:

[0041] Furthermore, it also includes an iris mechanism 13 disposed on the upper side of the exhaust mechanism 9. The iris mechanism 13 has a windshield 14 with an adjustable diameter. The inner edge of the windshield 14 is disposed close to the outer wall of the film tube 3. The windshield 14 enables the hot air dehumidification device 1 to form a relatively closed drying chamber 15 on its lower side. The iris mechanism 13 can adjust the inner diameter of the windshield 14 according to the diameter of the film tube 3 formed by film blowing. In actual use, the inner circle of the windshield 14 is disposed close to the film tube 3 but does not contact the surface of the film tube 3, thereby avoiding affecting the surface of the film tube 3. Figure 7 As shown, the iris mechanism 13 includes a fixed ring 24, a rotating ring 25, and an arc-shaped membrane petal 26. The fixed ring 24 is fixedly arranged on the upper side of the exhaust chamber 10. The inner and outer diameters of the fixed ring 24 and the rotating ring 25 are set to be the same, and the inner diameter thereof is the maximum diameter adjusted by the wind shield ring 14. A plurality of arc-shaped membrane petals 26 stacked in a surrounding shape are arranged between the fixed ring 24 and the rotating ring 25. The two ends of the arc-shaped membrane petal 26 are respectively provided with convex rods 27, and the convex rods 27 at the two ends are respectively located on both sides of the arc-shaped membrane petal 26. The fixed ring 24 is provided with radial guide rails 28 in the radial direction, and the convex rods 27 on the lower side are sequentially slidably arranged. The rotating circle 25 is placed in the corresponding radial guide rail 28, and a positioning hole 29 is provided on the rotating circle 25. The convex rod 27 on the upper side is rotated and placed in the corresponding positioning hole 29. In actual use, when the rotating circle 25 rotates, each arc-shaped membrane petal 26 is pulled through the positioning hole 29 at the same time, and the arc-shaped membrane petal 26 is driven to rotate and slide at the same time, so that the windshield ring 14 surrounded by the inner circle of each arc-shaped membrane petal 26 can be controlled by the rotating circle 25 to adjust the diameter, thereby changing the distance between the windshield ring 14 and the surface of the membrane tube 3. When in use, the control of the rotating circle 25 can be automatically controlled, or it can be as follows Figure 7 As shown, a driving rod 30 is arranged on the outer edge of the rotating circle 25 to adjust the rotating circle 25 .

[0042] Embodiment three:

[0043] The air outlet 6 is connected with an air duct 16. Figure 2 , 5 As shown, the root of the air duct 16 is movably connected to the air outlet 6 on the inner wall of the annular wall cavity 5, so that the air outlet angle can be adjusted, so that the angle between the air outlet and the surface of the membrane tube 3 is adjustable; an arc-shaped opening tube 17 is connected to the end of the air duct 16, as shown in FIG. Figure 5 As shown, the arc-shaped open tube 17 is arranged in an arc-shaped structure, and 4-8 arc-shaped open tubes 17 are arranged inside, so that the arc-shaped open tube 17 forms a structure arranged around the membrane tube 3, and an arc-shaped air outlet 18 is provided on the upper edge of the arc-shaped open tube 17. The heated air flow is blown out through the arc-shaped air outlet 18, thereby forming a uniform distribution, consistent wind direction, and adjustable wind direction.

[0044] Embodiment 4:

[0045] As another embodiment of the air outlet 6, Figure 4 As shown, the air outlet 6 is a long hole arranged in a spiral shape, and a plurality of air outlets 6 are arranged around the axis. The long air outlet 6 in this embodiment has a certain width in the longitudinal direction, so that the wider position on the side of the membrane tube 3 can be dried and dehydrated by hot air at the same time, and the long air outlet 6 arranged in an inclined spiral overlaps each other between two adjacent air outlets 6, thereby forming a full coverage hot air dehydration on the surface of the membrane tube 3.

[0046] As an improvement, the annular wall cavity 5 in this embodiment includes a fixed outer wall 19 and a rotating inner wall 20. When in use, the rotating inner wall 20 is controlled to rotate, and the air outlet 6 is arranged on the rotating inner wall 20. The rotating inner wall 20 rotates around the central axis of the annular wall cavity 5, so that the air outlet 6 rotates around the membrane tube 3. When the rotating inner wall 20 rotates, each long strip air outlet 6 can rotate around the membrane tube 3, so that the surface of the membrane tube 3 can be dried more evenly. It can be understood that the rotating inner wall 20 structure in this embodiment can also be applied to Example 3, so that each arc-shaped opening tube 17 forms a structure that rotates around the membrane tube 3.

[0047] Specifically, the lower end of the rotating inner wall 20 extends downward from the fixed outer wall 19 to form a driving end 21, and the lower end of the fixed outer wall 19 is provided with a rotating driving part 22 that cooperates with the driving end 21. When the rotating inner wall 20 is controlled to rotate, the rotating driving part 22 cooperates with the driving end 21 to control the rotation. Figure 3 As shown, a driving motor is provided on the fixed outer wall 19, a gear is provided on the driving end 21, and a reduction mechanism is provided at the output end of the driving motor. The reduction mechanism meshes with the gear, thereby enabling the driving motor to control the rotating inner wall 20 to rotate.

[0048] Further, as an improved design of the air outlet 6 in this embodiment, Figure 6 As shown, the spiral air outlet 6 is connected with an air guide cavity 23, and the air guide cavity 23 is inclined upward, so that the air outlet 6 blows out hot air for drying and dehydration obliquely upward.

[0049] In actual use, the heating device 8 is made of stainless steel, and the air outlet 6 is made of stainless steel or aluminum alloy; the air outlet temperature is controlled by the heating device 8, and the air volume and wind speed are adjusted by controlling the power of the fan.

[0050] Technical effects:

[0051] 1. Completely avoid watermarks on the film surface and avoid scratches on the surface.

[0052] 2. Reduce the frequency of film explosion and increase the yield by about 5%.

[0053] 3. Improve product appearance quality, reduce overall production costs, and enhance the company's product competitiveness.

[0054] 4. Improve the thickness uniformity, mechanical strength in all directions and points, and haze uniformity of the film.

[0055] 5. It avoids the limitation of the surface of film materials and can be used for both polar and non-polar materials.

[0056] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A highly efficient and non-damaging membrane tube surface hot air dewatering device, characterized in that: The hot air dewatering device (1) is arranged in a circumferential shape on the outer periphery of the membrane tube (3), and comprises a hot air device, wherein the hot air device has an annular wall cavity (5), wherein the annular wall cavity (5) is hollow to form an annular cavity (7), and a plurality of air outlets (6) are arranged on the inner side of the annular wall cavity (5), wherein the air outlets (6) are connected to the annular cavity (7), and the air outlet direction of the air outlets (6) is toward the outer surface of the membrane tube (3); and further comprises a heating device (8), wherein the heating device (8) heats the air flow entering the annular cavity (7) so that the air outlets (6) eject hot air.

2. The highly efficient and non-damaging membrane tube (3) surface hot air dewatering device (1) according to claim 1 is characterized in that: The invention also includes an exhaust mechanism (9), wherein the exhaust mechanism (9) is arranged on the upper side of the hot air device, and the exhaust device includes an exhaust chamber (10), wherein the exhaust chamber (10) is arranged in a ring shape, and an exhaust port (11) is provided on the inner ring wall of the exhaust chamber (10). The invention also includes a vacuum pump (12), wherein the vacuum pump (12) is connected to the exhaust chamber (10) through an air duct (16) so that a negative pressure is formed inside the exhaust chamber (10).

3. The highly efficient and non-damaging membrane tube (3) surface hot air dewatering device (1) according to claim 2 is characterized in that: The invention also comprises an iris mechanism (13) arranged on the upper side of the exhaust mechanism (9), the iris mechanism (13) having a wind shield ring (14) with an adjustable diameter, the inner edge of the wind shield ring (14) being arranged close to the outer wall of the film tube (3), the wind shield ring (14) allowing the hot air dehydration device (1) to form a relatively closed drying chamber (15) on the lower side thereof.

4. The highly efficient and non-damaging membrane tube (3) surface hot air dewatering device (1) according to claim 1, characterized in that: The angle between the air outlet direction of the air outlet (6) and the vertical direction is 30-60°.

5. The highly efficient and non-damaging membrane tube (3) surface hot air dewatering device (1) according to claim 1, characterized in that: The air outlet (6) is connected to an air duct (16), the end of the air duct (16) is connected to an arc-shaped open tube (17), the arc-shaped open tube (17) is arranged in an arc-shaped structure, the upper edge of the arc-shaped open tube (17) is provided with an arc-shaped air outlet (18), and the air duct (16) is movably connected to the air outlet (6).

6. The highly efficient and non-damaging membrane tube (3) surface hot air dewatering device (1) according to claim 1, characterized in that: The air outlet (6) is a long hole arranged in a spiral shape, and multiple air outlets (6) are arranged around the axis. The annular wall cavity (5) includes a fixed outer wall (19) and a rotating inner wall (20). The air outlet (6) is arranged on the rotating inner wall (20), and the rotating inner wall (20) rotates around the central axis of the annular wall cavity (5), so that the air outlet (6) rotates around the membrane tube (3).

7. The highly efficient and non-damaging membrane tube (3) surface hot air dewatering device (1) according to claim 6, characterized in that: The lower end of the rotating inner wall (20) extends downward from the fixed outer wall (19) to form a driving end (21), and the lower end of the fixed outer wall (19) is provided with a rotating driving part (22) that matches the driving end (21).

8. The highly efficient and non-damaging membrane tube (3) surface hot air dewatering device (1) according to claim 6, characterized in that: The spiral air outlet (6) is connected to an air guide cavity (23), and the air guide cavity (23) is inclined toward the upper side.

9. The highly efficient and non-damaging membrane tube (3) surface hot air dewatering device (1) according to claim 1, characterized in that: The heating device (8) is an electric heating wire or steam heating.

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