Cooling and discharging device of plastic film blowing machine

Abstract

The utility model belongs to the field of plastic film blowing machines, particularly relates to a cooling and discharging device of a plastic film blowing machine, and aims to solve the problems that when a plastic film cylinder discharged from a blow molding film head is blown and cooled in the prior art, the direction of an air outlet hole is inconvenient to change, and an air outlet area is fixed, so that the cooling effect of the plastic film cylinder is not uniform, and the service life of the plastic film cylinder is influenced. In order to solve the problem that the cooling effect of discharged materials is reduced due to the fact that the cooling effect of partial areas is not obvious enough, the utility model provides the following scheme that the device comprises an air ring, and a plurality of supporting legs are fixedly arranged on the top side of the air ring. When the blowing cooling device is used, when a plastic film cylinder discharged from a blow molding film head is blown and cooled, the direction of the air outlet holes can be conveniently changed, the air outlet area is expanded, the phenomena that the cooling effect of the plastic film cylinder is not uniform, and the cooling effect of partial areas is not obvious enough are avoided, and the service life of the plastic film cylinder is prolonged. And meanwhile, the extension length and the blowing angle of the cooling pipe can be changed to adapt to plastic film cylinders with different thicknesses and sizes.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic blown film machines, in particular to a cooling and discharging device of a plastic blown film machine. Background Art

[0002] The plastic blown film machine is one of the important devices in the packaging industry and is used for producing plastic films. It uses plastic particles such as polyethylene and polypropylene as raw materials and makes plastic films of various specifications and thicknesses through processes such as heating, melting, extrusion, and stretching;

[0003] After retrieval, the patent with the authorization announcement number CN220031170U proposes a cooling and discharging device of a plastic blown film machine. The following problems exist in this technical solution:

[0004] [[ID= (14)]]Currently, when blowing air to cool the plastic film tube discharged from the blow molding die head, since it is not convenient to change the direction of the air outlet holes and the air outlet area is fixed and unchanged, the cooling effect of the plastic film tube is inconsistent, and the cooling effect in some areas is not obvious enough, thereby reducing the cooling effect of the discharged material;

[0005] In view of the above problems, the utility model document proposes a cooling and discharging device of a plastic blown film machine. Summary of the Utility Model

[0006] The utility model provides a cooling and discharging device of a plastic blown film machine, which solves the disadvantages in the prior art that when blowing air to cool the plastic film tube discharged from the blow molding die head, since it is not convenient to change the direction of the air outlet holes and the air outlet area is fixed and unchanged, the cooling effect of the plastic film tube is inconsistent, and the cooling effect in some areas is not obvious enough, thereby reducing the cooling effect of the discharged material.

[0007] The utility model provides the following technical scheme:

[0008] The cooling and discharging device of a plastic blown film machine includes:

[0009] An air ring, a plurality of support legs are fixedly arranged on the top side of the air ring, and the tops of the plurality of support legs are fixedly provided with the same cooling ring. A plurality of air conveying pipes are arranged between the air ring and the cooling ring, and the air ring and the cooling ring are communicated through the plurality of air conveying pipes;

[0010] A rotating mechanism, which is arranged on the cooling ring and is used for rotating and blowing air to cool different positions of the plastic film tube.

[0011] In a possible design, the rotating mechanism includes a limiting groove, a limiting ring, a rotating ring, a wind cavity, air supply holes, a fixing ring, teeth, a mounting bracket, a motor, and a gear. The limiting groove is formed in the inner wall of the cooling ring. The limiting ring is slidably connected to the inside of the limiting groove. The rotating ring is fixedly arranged on the inner wall of the limiting ring.

[0012] In a possible design, the wind cavity is formed in the rotating ring. A plurality of air delivery holes are formed in the inner wall of the cooling ring. The plurality of air delivery holes communicate with the wind cavity. The air supply holes are formed in the inner wall of the rotating ring.

[0013] In a possible design, the mounting bracket is fixedly arranged on the top side of the cooling ring. The motor is fixedly installed on the top side of the mounting bracket. The output end of the motor penetrates through the top side of the mounting bracket and extends to the bottom of the mounting bracket. The output end of the motor is fixed to the top side of the gear through a coupling.

[0014] In a possible design, the fixing ring is fixedly arranged on the top side of the rotating ring. A plurality of teeth are fixedly arranged on the inner wall of the fixing ring. The gear meshes with the plurality of teeth.

[0015] In a possible design, a plurality of connectors communicating with the air supply holes are fixedly arranged on the inner wall of the rotating ring. The outer wall of each connector is threadedly connected with an internally threaded pipe.

[0016] In a possible design, a connecting pipe is arranged inside the internally threaded pipe. The outer wall of the connecting pipe is provided with an external thread threadedly connected with the inner wall of the internally threaded pipe. One end of the connecting pipe communicates with a cooling pipe. A plurality of air outlet holes are formed in the outer wall of the cooling pipe.

[0017] In this application, during use, first, the air ring is connected to the blown film head on the plastic blown film machine, and the plastic film tube to be cooled continuously discharges from the blown film head. During the discharging process, the air ring and the cooling ring form the basic structure of the device. The two are fixedly connected through multiple support legs to form a stable framework. The air ring serves as the inlet of cold air and is connected to the cooling ring through multiple air ducts to ensure that the cold air can be evenly and stably transported into the cooling ring. Multiple air holes on the inner wall of the cooling ring are connected to the air cavity inside the rotating ring to ensure that the cold air can be evenly distributed to all parts of the rotating ring. The motor is fixed to the top side of the cooling ring through a mounting frame, and its output end is connected to a gear through a coupling to drive the gear to rotate. The gear meshes with the teeth on the inner wall of the fixed ring. When the gear rotates, it drives the air supply holes on it to rotate, thereby achieving comprehensive blowing and cooling, enhancing the cooling effect, avoiding uneven cooling effects of the plastic film tube, and preventing the phenomenon that the cooling effect in some areas is not obvious enough. Furthermore, it improves the cooling effect of the discharged material. At the same time, the limiting ring slides in the limiting groove to ensure the stable rotation of the rotating ring. The air cavity inside the rotating ring serves as the space for storing and distributing cold air, and the cold air is transported to the cooling tube through multiple air supply holes;

[0018] When it is necessary to cool different heights of the plastic film tube, the connecting head on the inner wall of the rotating ring is connected to the connecting tube through an internal thread tube. This threaded connection method is convenient for disassembly and replacement to meet different cooling requirements. As the cooling tube rotates, the multiple air outlet holes on the outer wall of the cooling tube evenly blow the cold air towards different orientations of the plastic film tube, achieving an all-round and uniform cooling effect. By adjusting the connection position between the internal thread tube and the connecting tube, the extended length and blowing angle of the cooling tube can be changed to adapt to plastic film tubes of different thicknesses and sizes. The rotation speed of the motor can also be adjusted through a controller to change the rotation speed of the cooling tube, thereby achieving precise control of the cooling effect and improving the application effect.

[0019] In this utility model, the cooling and discharging device of the plastic blown film machine can achieve comprehensive blowing and cooling of the plastic film tube through the rotating mechanism, enhance the cooling effect, avoid uneven cooling effects of the plastic film tube, and prevent the phenomenon that the cooling effect in some areas is not obvious enough. Furthermore, it improves the cooling effect of the discharged material;

[0020] In this utility model, through the settings of structures such as the internal thread tube, connecting tube, external thread, cooling tube, and air outlet holes, the extended length and blowing angle of the cooling tube can be changed to adapt to plastic film tubes of different thicknesses and sizes, thereby achieving precise control of the cooling effect and improving the application effect;

[0021] In the present utility model, when blowing and cooling a plastic film tube discharged from a blown film die head, it is convenient to change the direction of the air outlet holes, expand the air outlet area, avoid uneven cooling effects of the plastic film tube, and prevent the phenomenon that the cooling effect in some areas is not obvious enough. At the same time, the extended length and blowing angle of the cooling pipe can also be changed to adapt to plastic film tubes of different thicknesses and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 FIG. 1 is a front view structural schematic diagram of a cooling and discharging device of a plastic blowing machine provided by an embodiment of the present utility model;

[0023] Figure 2 FIG. 2 is a structural schematic diagram of a cooling ring of a cooling and discharging device of a plastic blowing machine provided by an embodiment of the present utility model;

[0024] Figure 3 FIG. 3 is a structural schematic diagram of a rotating ring of a cooling and discharging device of a plastic blowing machine provided by an embodiment of the present utility model;

[0025] Figure 4 FIG. 4 is a structural schematic diagram of a cooling pipe of a cooling and discharging device of a plastic blowing machine provided by an embodiment of the present utility model.

[0026] REFERENCE NUMERALS:

[0027] 1, air ring; 2, support leg; 3, cooling ring; 4, air delivery pipe; 5, air delivery hole; 6, limit groove; 7, limit ring; 8, rotating ring; 9, air cavity; 10, air supply hole; 11, internal thread pipe; 12, fixed ring; 13, tooth; 14, mounting bracket; 15, motor; 16, gear; 17, connecting pipe; 18, external thread; 19, cooling pipe; 20, air outlet hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0029] Embodiment 1

[0030] Please refer to Figures 1 - 4 , the cooling and discharging device includes:

[0031] The air ring 1 has a plurality of support legs 2 fixedly arranged on its top side. The tops of the plurality of support legs 2 are fixedly provided with the same cooling ring 3. The air ring 1 and the cooling ring 3 form the basic structure of the device. The two are fixedly connected through the plurality of support legs 2 to form a stable framework. A plurality of air ducts 4 are arranged between the air ring 1 and the cooling ring 3. The air ring 1 and the cooling ring 3 are connected and communicated through the plurality of air ducts 4. The air ring 1 serves as the inlet of the cold air and is connected and communicated with the cooling ring 3 through the plurality of air ducts 4 to ensure that the cold air can be evenly and stably delivered into the cooling ring 3.

[0032] The rotating mechanism is arranged on the cooling ring 3 and is used for rotating and blowing air to cool different orientations of the plastic film tube. The rotating mechanism includes a limit groove 6, a limit ring 7, a rotating ring 8, an air cavity 9, air supply holes 10, a fixed ring 12, teeth 13, a mounting frame 14, a motor 15 and a gear 16. The limit groove 6 is opened on the inner wall of the cooling ring 3. The limit ring 7 is slidably connected inside the limit groove 6. The rotating ring 8 is fixedly arranged on the inner wall of the limit ring 7. At the same time, the limit ring 7 will slide in the limit groove 6 to ensure that the rotating ring 8 can rotate smoothly. The air cavity 9 inside the rotating ring 8 serves as the space for storing and distributing the cold air, and the cold air is delivered to the cooling pipe 19 through the plurality of air supply holes 10.

[0033] The air cavity 9 is opened inside the rotating ring 8. A plurality of air supply holes 5 are opened on the inner wall of the cooling ring 3. The plurality of air supply holes 5 are connected and communicated with the air cavity 9. The air supply holes 10 are opened on the inner wall of the rotating ring 8. The plurality of air supply holes 5 on the inner wall of the cooling ring 3 are connected and communicated with the air cavity 9 inside the rotating ring 8 to ensure that the cold air can be evenly distributed to each part of the rotating ring 8, and the air supply holes 10 can achieve comprehensive blowing and cooling to enhance the cooling effect.

[0034] The mounting frame 14 is fixedly arranged on the top side of the cooling ring 3. The motor 15 is fixedly installed on the top side of the mounting frame 14. The output end of the motor 15 penetrates the top side of the mounting frame 14 and extends to the bottom of the mounting frame 14. The output end of the motor 15 is fixedly connected to the top side of the gear 16 through a coupling. The fixed ring 12 is fixedly arranged on the top side of the rotating ring 8. A plurality of teeth 13 are fixedly arranged on the inner wall of the fixed ring 12. The gear 16 meshes with the plurality of teeth 13. The motor 15 is fixed to the top side of the cooling ring 3 through the mounting frame 14, and its output end is connected to the gear 16 through a coupling to drive the gear 16 to rotate. The gear 16 meshes with the teeth 13 on the inner wall of the fixed ring 12. When the gear 16 rotates, it will drive its air supply holes 10 to rotate, thereby realizing comprehensive blowing and cooling and enhancing the cooling effect.

[0035] This application can be used in the field of plastic film blowing machines and other fields applicable to this application.

[0036] Embodiment 2

[0037] ReferenceFigures 1 - 4 , an improvement based on the first embodiment: a cooling and discharging device of a plastic blown film machine, which is applied to the field of plastic blown film machines;

[0038] A plurality of connectors communicating with the air supply holes 10 are fixedly arranged on the inner wall of the rotating ring 8. The outer wall of each connector is threadedly connected with an internally threaded pipe 11. The connectors on the inner wall of the rotating ring 8 are connected to the connecting pipe 17 through the internally threaded pipes 11. This threaded connection method is convenient for disassembly and replacement to adapt to different cooling requirements.

[0039] A connecting pipe 17 is arranged inside the internally threaded pipe 11. An external thread 18 threadedly connected with the inner wall of the internally threaded pipe 11 is arranged on the outer wall of the connecting pipe 17. One end of the connecting pipe 17 communicates with a cooling pipe 19. A plurality of air outlet holes 20 are formed in the outer wall of the cooling pipe 19. As it rotates, the cold air is evenly blown to different positions of the plastic film tube through the plurality of air outlet holes 20 on the outer wall of the cooling pipe 19, realizing an all-round and uniform cooling effect. By adjusting the connection position between the internally threaded pipe 11 and the connecting pipe 17, the extending length and blowing angle of the cooling pipe 19 can be changed to adapt to plastic film tubes of different thicknesses and sizes.

[0040] However, as is well known to those skilled in the art, the working principle and wiring method of the motor 15 device are common knowledge. They all belong to conventional means or common general knowledge and will not be elaborated here. Those skilled in the art can make any selection according to their needs or convenience.

[0041] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the present invention and should be covered by the protection scope of the present invention; without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. Cooling and discharging device of plastic blown film machine, characterized in that Including: An air ring (1), a plurality of support legs (2) are fixedly arranged on the top side of the air ring (1), the tops of the plurality of support legs (2) are fixedly provided with the same cooling ring (3), and a plurality of air ducts (4) are arranged between the air ring (1) and the cooling ring (3), and the air ring (1) and the cooling ring (3) are communicated through the plurality of air ducts (4); A rotating mechanism, which is arranged on the cooling ring (3) and is used for rotating and blowing air to cool different orientations of the plastic film tube.

2. The cooling and discharging device of the plastic blown film machine according to claim 1, characterized in that, The rotating mechanism includes a limit groove (6), a limit ring (7), a rotating ring (8), an air cavity (9), an air supply hole (10), a fixing ring (12), teeth (13), a mounting frame (14), a motor (15) and a gear (16). The limit groove (6) is opened on the inner wall of the cooling ring (3), the limit ring (7) is slidably connected inside the limit groove (6), and the rotating ring (8) is fixedly arranged on the inner wall of the limit ring (7).

3. The cooling and discharging device of the plastic blown film machine according to claim 2, wherein, The air cavity (9) is opened inside the rotating ring (8), a plurality of air supply holes (5) are opened on the inner wall of the cooling ring (3), and the plurality of air supply holes (5) are communicated with the air cavity (9), and the air supply hole (10) is opened on the inner wall of the rotating ring (8).

4. The cooling and discharging device of the plastic blown film machine according to claim 3, characterized in that, The mounting frame (14) is fixedly arranged on the top side of the cooling ring (3), the motor (15) is fixedly installed on the top side of the mounting frame (14), the output end of the motor (15) penetrates through the top side of the mounting frame (14) and extends to the bottom of the mounting frame (14), and the output end of the motor (15) is fixed to the top side of the gear (16) through a coupling.

5. The cooling and discharging device of the plastic blown film machine according to claim 4, wherein, The fixing ring (12) is fixedly arranged on the top side of the rotating ring (8), and a plurality of teeth (13) are fixedly arranged on the inner wall of the fixing ring (12), and the gear (16) meshes with the plurality of teeth (13).

6. The cooling and discharging device of the plastic blown film machine according to claim 2, wherein, A plurality of connectors communicated with the air supply holes (10) are fixedly arranged on the inner wall of the rotating ring (8), and an internally threaded pipe (11) is threadedly connected to the outer wall of each connector.

7. The cooling and discharging device of the plastic blown film machine according to claim 6, characterized in that, A connecting pipe (17) is arranged inside the internally threaded pipe (11), an external thread (18) threadedly connected to the inner wall of the internally threaded pipe (11) is arranged on the outer wall of the connecting pipe (17), one end of the connecting pipe (17) is communicated with a cooling pipe (19), and a plurality of air outlet holes (20) are opened on the outer wall of the cooling pipe (19).

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