An adjustable air volume film bubble internal cooling device

Abstract

The utility model belongs to the membrane bubble inside cooling technical field, concretely is a kind of membrane bubble inside cooling device of adjustable air volume, it includes: cooling assembly, the cooling assembly includes: cold source device, heat exchanger, shell, fan and inner cooling air ring, both ends of the cooling assembly are fixedly connected with connecting pipe;When adjusting frame rotates, rubber pad is pushed by spring, enters the inside of positioning groove and carries out the pressing to pressure sensor, and pressure sensor is pressed after receiving data into external control box, to close drive motor by external control box, the position of adjusting frame is fixed, to fix the air volume received inside membrane bubble, by the position adjustment of circular hole and semicircular hole, air volume can be adjusted, so that air volume can adapt to the difference of different thickness, material or production process cooling demand, to improve the uniformity of membrane bubble cooling and film transparency, to improve the production quality of blow molding film.

Description

Technical Field

[0001] This utility model belongs to the field of membrane bubble internal cooling technology, specifically an adjustable airflow membrane bubble internal cooling device. Background Technology

[0002] The internal cooling device for film bubbles is a cooling device used in plastic extrusion blow molding film forming equipment. Its main function is to accelerate the cooling and shaping of film bubbles through internal cooling, thereby improving production speed and film quality.

[0003] A Chinese patent with authorization announcement number CN209756064U discloses a cooling device inside the film bubble of a blown film machine, including an air inlet pipe and an air outlet pipe. The air inlet pipe is sleeved on the lower part of the outside of the air outlet pipe and passes through the die head. By setting a first cooling device and a second cooling device, the gas in the air inlet pipe and the air outlet pipe can be cooled, reducing the heating effect of the die head and the air outlet pipe on the gas, thereby reducing the cooling effect of the gas on the film bubble due to overheating.

[0004] However, the above solutions still have some problems. The cooling device adopts a fixed air volume design, which cannot adapt to the different cooling needs of different thicknesses, materials or production processes. This can easily lead to uneven cooling of the membrane bubble and a decrease in film transparency, which in turn leads to a reduction in production quality. Therefore, in order to address the above problems, an adjustable air volume membrane bubble internal cooling device is proposed. Utility Model Content

[0005] To overcome the shortcomings of existing technologies and address the problems of existing equipment, this utility model proposes an adjustable airflow membrane bubble cooling device.

[0006] The technical solution adopted by this utility model to solve its technical problem is an adjustable airflow membrane bubble internal cooling device, including: a cooling assembly, the cooling assembly including: a cold source device, a heat exchanger, a shell, a fan and an internal cooling air ring, both ends of the cooling assembly are fixedly connected to connecting pipes, the cooling assembly has through holes, a positioning groove is formed on one side of the inner wall of the cooling assembly, a pressure sensor is installed inside the positioning groove, an adjustment frame is set inside the cooling assembly, the adjustment frame has circular holes and semi-circular holes, and the semi-circular holes are located between the two sets of circular holes, a drive motor is installed on the inner wall of the cooling assembly, the output end of the drive motor is fixedly connected to one side of the adjustment frame, a rubber pad is pushed by a spring into the interior of the positioning groove and presses the pressure sensor, the pressure sensor transmits data to the external control box after being pressed, thereby shutting down the drive motor through the external control box and fixing the position of the adjustment frame.

[0007] Preferably, a spring is fixedly connected to one side of the adjusting frame, and a rubber pad is fixedly connected to one side of the adjusting frame. One end of the spring is fixedly connected to the inner wall of the rubber pad, and the rubber pad is movably connected inside the positioning groove. The rubber pad can increase the friction with the inner wall of the positioning groove, thereby cooperating with the drive motor to improve the fixing strength of the adjusting frame.

[0008] Preferably, the outer surfaces of the two sets of connecting pipes are fitted with anti-slip rings, and the inner walls of the two sets of anti-slip rings are respectively fitted with air inlet pipes and air outlet pipes. The anti-slip rings can increase the friction with the outer walls of the air inlet pipes and air outlet pipes, thereby making a preliminary connection and fixation between the two.

[0009] Preferably, the air inlet pipe and the air outlet pipe are respectively opposite to the two sets of connecting pipes. The anti-slip ring, the air inlet pipe and the air outlet pipe are all provided with threaded holes. The internal threads of the threaded holes are connected to the first bolt. After the first bolt is screwed into the threaded hole, the position of the anti-slip ring can be fixed, so that the movement of the anti-slip ring can be avoided from affecting the disassembly when the cooling component is disassembled.

[0010] Preferably, a reinforcing ring is fixedly connected to the outer surface of the anti-slip ring, and a second bolt is threaded onto the reinforcing ring. An air inlet is opened at one end of the air outlet pipe, and an air outlet is fixedly connected to the outer side of one end of the air inlet hole. The pressure plate at one end of the second bolt presses against one side of the reinforcing ring, thereby reducing the size of the opening of the reinforcing ring and reducing the size of the reinforcing ring, so that the two sets of connecting pipes can be connected and fixed to the air outlet pipe and the air inlet pipe respectively.

[0011] Preferably, the inner wall of the air outlet is provided with a wind force detector, and the device is connected to an external control box. The external control box is used to control the start and stop of the pressure sensor, drive motor and wind force detector. By controlling the pressure sensor, drive motor and wind force detector through the external control box, the convenience of air volume adjustment is improved.

[0012] The advantages of this invention are as follows: When the adjusting frame rotates, the rubber pad is pushed by the spring and enters the positioning groove to press the pressure sensor. After being pressed, the pressure sensor transmits data to the external control box, thereby shutting down the drive motor through the external control box and fixing the position of the adjusting frame. This fixes the airflow inside the bubble. By adjusting the position of the circular hole and the semi-circular hole, the airflow can be adjusted, allowing the airflow to adapt to the differentiated cooling needs of different thicknesses, materials, or production processes. This improves the uniformity of bubble cooling and the transparency of the film, thereby improving the production quality of blown film.

[0013] This invention uses a first bolt to fix the position of the anti-slip ring, thereby adjusting the connection between the two sets of connecting pipes and the air outlet and air inlet pipes. When the second bolt is unscrewed, the cooling assembly can be disassembled. When the anti-slip ring wraps around the air outlet and air inlet pipes, the second bolt is used to tighten the reinforcing ring, thereby connecting and fixing the two sets of connecting pipes to the air outlet and air inlet pipes respectively. This simplifies the installation and disassembly steps of the cooling assembly, thereby improving the convenience of installing and disassembling the cooling device. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure;

[0016] Figure 2 This is a schematic cross-sectional view of the overall structure;

[0017] Figure 3 This is a schematic cross-sectional view of the cooling assembly;

[0018] Figure 4 A schematic diagram of the cross-section of the adjustment component;

[0019] Figure 5 This is a schematic diagram of the reinforcement components.

[0020] In the diagram: 1. Cooling assembly; 2. Connecting pipe; 3. Through hole; 4. Positioning groove; 5. Pressure sensor; 6. Adjustment bracket; 7. Circular hole; 8. Semi-circular hole; 9. Drive motor; 10. Spring; 11. Rubber pad; 12. Anti-slip ring; 13. Air inlet pipe; 14. Air outlet pipe; 15. Threaded hole; 16. First bolt; 17. Reinforcing ring; 18. Second bolt; 19. Air inlet hole; 20. Air outlet; 21. Wind power detector. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0022] Please see Figure 1-5As shown, an adjustable airflow membrane bubble internal cooling device includes: a cooling component 1, which includes a cold source device, a heat exchanger, a shell, a fan, and an internal cooling air ring. Both ends of the cooling component 1 are fixedly connected to connecting pipes 2. The cooling component 1 has through holes 3. A positioning groove 4 is provided on one side of the inner wall of the cooling component 1. A pressure sensor 5 is installed inside the positioning groove 4. An adjustment frame 6 is provided inside the cooling component 1. The adjustment frame 6 has circular holes 7 and semi-circular holes 8, and the semi-circular holes 8 are located between the two sets of circular holes 7. A drive motor 9 is installed on the inner wall of the cooling component 1. The output end of the drive motor 9 is fixedly connected to one side of the adjustment frame 6. A spring 10 is fixedly connected to one side of the adjustment frame 6. A rubber pad 11 is fixedly connected to one side of the adjustment frame 6. One end of the spring 10 is fixedly connected to the inner wall of the rubber pad 11. The rubber pad 11 is movably connected inside the positioning groove 4.

[0023] The current cooling device uses a fixed airflow design, which cannot adapt to the diverse cooling needs of different thicknesses, materials, or production processes. This can easily lead to uneven cooling of the film bubble and decreased film transparency. Therefore, an adjustable airflow internal cooling device for the film bubble is proposed. In actual use, since the entire device is located inside the plastic extrusion blow molding film forming equipment, air enters the cooling component 1 through the air inlet pipe 13 through the through-hole 3 during the forming equipment operation. The cold source device provides the cooling medium, the heat exchanger is used for heat exchange, and the fan sends the cooling medium into the inner cooling air ring. The inner cooling air ring has an air outlet 20. By adjusting the fan speed... The position of the air ring and the air flow allow for rapid cooling of the membrane bubble. Cold air is blown into the through-hole 3 through the semi-circular hole 8 or circular hole 7 on the regulating frame 6, and then into the molding equipment. The cold air is blocked by the inner wall of the molding equipment and enters the air outlet 14 and air outlet 20 through the air inlet 19, thus directing the cold air into the membrane bubble for cooling. The airflow volume from the air outlet 20 is detected by the airflow detector 21. The data detected by the airflow detector 21 is transmitted to the external control box. When airflow adjustment is needed, the drive motor 9 is started via the external control box, driving the regulating frame. The adjustment bracket 6 rotates to adjust the hole opposite to the through hole 3. When the circular hole 7 is opposite to the through hole 3, the air volume is larger. When the semi-circular hole 8 is opposite to the through hole 3, the through hole 3 is blocked by the semi-circular hole 8, resulting in a smaller air volume. This allows for the adjustment of the air volume entering the air outlet duct 14 and the air outlet 20 through the air inlet 19. The air volume is detected by the wind power detector 21. When the air volume meets the cooling requirements of the membrane bulb, the adjustment bracket 6 stops rotating, so that the spring 10 and rubber pad 11 on one side are opposite to the positioning groove 4. The rubber pad 11 is pushed by the spring 10 and enters the interior of the positioning groove 4, and presses against the pressure. When the force sensor 5 is pressed, the pressure sensor 5 transmits the data to the external control box, thereby shutting down the drive motor 9 through the external control box and fixing the position of the adjustment bracket 6. This fixes the circular hole 7 or semi-circular hole 8 opposite to the through hole 3, thus fixing the airflow and the airflow inside the membrane bubble. By adjusting the position of the circular hole 7 and the semi-circular hole 8, the airflow can be adjusted to meet the differentiated cooling needs of different thicknesses, materials, or production processes, thereby improving the uniformity of membrane bubble cooling and film transparency, and ultimately improving the production quality of blown film.

[0024] Please see Figure 1-5As shown, anti-slip rings 12 are fitted on the outer surfaces of the two sets of connecting pipes 2. Air inlet pipes 13 and air outlet pipes 14 are fitted on the inner walls of the two sets of anti-slip rings 12 respectively. Air inlet pipes 13 and air outlet pipes 14 are opposite to the two sets of connecting pipes 2 respectively. Threaded holes 15 are opened on the anti-slip rings 12, air inlet pipes 13 and air outlet pipes 14. A first bolt 16 is threaded inside the threaded hole 15. A reinforcing ring 17 is fixedly connected to the outer surface of the anti-slip rings 12. A second bolt 18 is threadedly connected to the reinforcing ring 17. An air inlet hole 19 is opened at one end of the air outlet pipe 14. An air outlet 20 is fixedly connected to the outer side of one end of the air inlet hole 19. A wind detector 21 is provided on the inner wall of the air outlet 20. A control box is connected to the device. The external control box is used to control the start and stop of the pressure sensor 5, the drive motor 9 and the wind detector 21.

[0025] When the cooling device needs maintenance, unscrew the first bolt 16 and the second bolt 18 at both ends to release the pressure on the anti-slip ring 12. Then pull the anti-slip ring 12 outward so that the connecting pipes 2 at both ends are exposed. The cooling device can then be removed for maintenance. After maintenance, place the cooling device inside the plastic extrusion blow molding film forming equipment so that the connecting pipes 2 at both ends of the cooling component 1 are in contact with one end of the air outlet pipe 14 and the air inlet pipe 13, respectively. Then pull the anti-slip ring 12 so that the connecting pipes 2 are completely within the anti-slip ring 12. Inside the device, the first bolt 16 is screwed into the threaded hole 15 to fix the position of the anti-slip ring 12. Then, the second bolt 18 is screwed into the reinforcing ring 17. The pressure plate at one end of the second bolt 18 presses against one side of the reinforcing ring 17, thereby reducing the opening size of the reinforcing ring 17 and making the ring size smaller. This improves the fit between the anti-slip ring 12 and the air outlet pipe 14 and the air inlet pipe 13. At the same time, it allows the two sets of connecting pipes 2 to be connected and fixed to the air outlet pipe 14 and the air inlet pipe 13 respectively, thereby improving the ease of installation and disassembly of the cooling device.

[0026] Working principle: When the molding equipment is running, air enters the cooling component 1 through the through hole 3 of the air inlet pipe 13. The cooling medium is provided by the cold source device, and the heat exchanger is used for heat exchange. The fan sends the cooling medium into the inner cold air ring, which has an air outlet 20. By adjusting the fan speed and the position of the air ring, rapid cooling of the membrane bubble can be achieved. Cold air is blown into the through hole 3 through the semi-circular hole 8 or circular hole 7 on the adjusting frame 6, and then into the molding equipment through the through hole 3. The cold air is blocked by the inner wall of the molding equipment and enters the air outlet pipe 14 and the air outlet 20 through the air inlet 19, thus cooling the membrane bubble. Cool air is blown into the membrane bubble for cooling. The airflow from the outlet 20 is detected by the wind power detector 21. The data detected by the wind power detector 21 is transmitted to the external control box. When airflow adjustment is needed, the drive motor 9 is started through the external control box, which drives the adjusting bracket 6 to rotate, thereby adjusting the hole opposite to the through hole 3. When the circular hole 7 is opposite to the through hole 3, the airflow is larger. When the semi-circular hole 8 is opposite to the through hole 3, the through hole 3 is blocked by the semi-circular hole 8, resulting in a smaller airflow. When the airflow meets the cooling requirements of the membrane bubble, the adjusting bracket 6 stops rotating. The pad 11, pushed by the spring 10, enters the positioning groove 4 and presses the pressure sensor 5. The pressure sensor 5 transmits data to the external control box, which then shuts off the drive motor 9 and fixes the position of the adjusting bracket 6, thus fixing the circular hole 7 or semi-circular hole 8 opposite to the through hole 3, thereby fixing the airflow. When the cooling device needs maintenance, unscrew the first bolt 16 and the second bolt 18 at both ends to release the pressure on the anti-slip ring 12, allowing the cooling device to be removed for maintenance. After maintenance, place the cooling device into a plastic extrusion box. The connecting pipes 2 at both ends of the cooling component 1 are brought into contact with one end of the air outlet pipe 14 and the air inlet pipe 13, respectively. The anti-slip ring 12 is pulled so that the connecting pipes 2 are completely inside the anti-slip ring 12. The position of the anti-slip ring 12 is fixed by the first bolt 16. Then the second bolt 18 is screwed into the reinforcing ring 17. The pressure plate at one end of the second bolt 18 squeezes one side of the reinforcing ring 17, causing the ring size of the reinforcing ring 17 to shrink. The two sets of connecting pipes 2 are connected and fixed to the air outlet pipe 14 and the air inlet pipe 13, thereby improving the ease of installation and disassembly of the cooling device.

[0027] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A membrane bubble internal cooling device with adjustable airflow, characterized in that: include: A cooling assembly (1) includes a cold source device, a heat exchanger, a shell, a fan, and an inner cooling air ring. Both ends of the cooling assembly (1) are fixedly connected to connecting pipes (2). A through hole (3) is provided on the cooling assembly (1). A positioning groove (4) is provided on one side of the inner wall of the cooling assembly (1). A pressure sensor (5) is installed inside the positioning groove (4). An adjustment frame (6) is provided inside the cooling assembly (1). A circular hole (7) is provided on the adjustment frame (6). A semi-circular hole (8) is provided on the adjustment frame (6), and the semi-circular hole (8) is located between two sets of circular holes (7). A drive motor (9) is installed on the inner wall of the cooling assembly (1). The output end of the drive motor (9) is fixedly connected to one side of the adjustment frame (6).

2. The adjustable airflow membrane bubble cooling device according to claim 1, characterized in that: A spring (10) is fixedly connected to one side of the adjusting frame (6), and a rubber pad (11) is fixedly connected to one side of the adjusting frame (6). One end of the spring (10) is fixedly connected to the inner wall of the rubber pad (11), and the rubber pad (11) is movably connected to the inside of the positioning groove (4).

3. The adjustable airflow membrane bubble cooling device according to claim 1, characterized in that: The outer surfaces of the two sets of connecting pipes (2) are fitted with anti-slip rings (12), and the inner walls of the two sets of anti-slip rings (12) are fitted with air inlet pipes (13) and air outlet pipes (14), respectively.

4. The adjustable airflow membrane bubble cooling device according to claim 3, characterized in that: The air inlet pipe (13) and air outlet pipe (14) are respectively opposite to the two sets of connecting pipes (2). The anti-slip ring (12), air inlet pipe (13) and air outlet pipe (14) are all provided with threaded holes (15), and the threaded holes (15) are internally connected with first bolts (16).

5. The adjustable airflow membrane bubble cooling device according to claim 3, characterized in that: A reinforcing ring (17) is fixedly connected to the outer surface of the anti-slip ring (12), and a second bolt (18) is threaded onto the reinforcing ring (17). An air inlet (19) is opened at one end of the air outlet pipe (14), and an air outlet (20) is fixedly connected to the outer side of one end of the air inlet (19).

6. The adjustable airflow membrane bubble cooling device according to claim 5, characterized in that: The inner wall of the air outlet (20) is provided with a wind detector (21), and the device is connected to a control box. The external control box is used to control the start and stop of the pressure sensor (5), the drive motor (9) and the wind detector (21).

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