Film blowing machine with adjustable film thickness

Abstract

The utility model discloses a film blowing machine with adjustable film thickness, which comprises a base, a screw extruder fixedly mounted at the top of the base, a blowing table mounted at the top of one side of the base, an adjustable blowing die arranged in the middle of the blowing table, a cooling air ring arranged at the top of the blowing table, and a connecting plate connected to the bottom of one side of the base. One side of the connecting plate is connected with a high frame, a mounting box is mounted at the bottom of the high frame, a cooling fan is mounted in the mounting box, the output end of the cooling fan communicates with a ventilation pipe, one end of the ventilation pipe communicates with a blast pipe, a speed regulating valve is mounted in the middle of the ventilation pipe, and an air inlet mechanism is mounted at the input end of the cooling fan. According to the film blowing machine capable of adjusting the film thickness, the air inlet amount of the ventilation pipe can be adjusted through the speed adjusting valve, the air speed is indirectly adjusted so as to change the film thickness, the cooling effect of equipment is improved, and the cooling efficiency of the film is improved.

Description

Technical Field

[0001] The utility model relates to the field of film blowing machines, in particular to a film blowing machine with adjustable film thickness. Background Art

[0002] A blow molding machine is a plastic processing machine. After the liquid plastic is sprayed out, the wind blown out by the machine is used to blow the plastic body to a mold cavity of a certain shape to make a product. This machine is called a blow molding machine. A plastic film blowing machine is a device that heats and melts plastic particles and then blows them into a film.

[0003] The film blowing machine proposed in the existing patent application number "CN202021871588.5" "The film blowing machine includes a hopper, a thermoplastic device, and a film blowing device. The hopper is used to put plastic particles. The thermoplastic device includes a box, a screw, a heater and a temperature sensor. The heater is used to heat the plastic particles. The temperature sensor is used to detect the heating temperature. The film blowing device includes a die head, a fixed core rod, an air ring and a wind pressure sensor. The die head is rotatably arranged. The fixed core rod includes an outer cylinder, an inner cylinder and an induced draft fan. It also includes a winding device. The winding device includes a reel and a winding drive. The winding device includes a herringbone splint, and the herringbone splint is arranged between the fixed core rod and the film pressing roller. According to the film blowing machine of the utility model, the thickness of the blown film is relatively uniform, and the processing quality of the film is improved." During use, the film blowing machine often relies on a blower to cool the film discharged after blow molding. When the external ambient temperature is slightly high, the temperature of the wind is high, the cooling effect decreases, and the cooling efficiency is reduced. Summary of the invention

[0004] The utility model aims to provide a film blowing machine with adjustable film thickness to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a film blowing machine with adjustable film thickness, comprising a base, a screw extruder is fixedly installed on the top of the base, a blowing platform is installed on the top of one side of the base, an adjustable blowing die is provided in the middle of the blowing platform, a cooling air ring is provided on the top of the blowing platform, a connecting plate is connected to the bottom of one side of the base, a high frame is connected to one side of the connecting plate, a herringbone plate is provided on the top of the inner side of the high frame, an installation box is installed at the bottom of the high frame, a cooling fan is installed inside the installation box, a winder is installed at the bottom of one side of the high frame, an output end of the cooling fan is connected to a ventilation pipe, one end of the ventilation pipe is connected to a blast pipe, a speed regulating valve is installed in the middle of the ventilation pipe, an air inlet mechanism is installed at the input end of the cooling fan, the air inlet mechanism includes an air inlet pipe and a semiconductor refrigerator installed inside the air inlet pipe, and a temperature sensor is installed on one side inside the air inlet pipe.

[0006] Preferably, a controller is installed on one side of the front side of the base, and the screw extruder, cooling fan, winder, semiconductor refrigerator and temperature sensor are all electrically connected to an external power supply through the controller.

[0007] Preferably, one side of the top of the screw extruder is connected to a feed hopper, the output end of the screw extruder is connected to an extrusion tube, the extrusion tube is connected to an adjustable blow molding die, the cooling air ring matches the adjustable blow molding die, and the herringbone plate is arranged corresponding to the adjustable blow molding die, and a material guide groove is provided on the top of the herringbone plate. When winding during use, the blown plastic film passes through the top and the material guide groove on the herringbone plate, so that the expanded product is flattened.

[0008] Preferably, one end of the blast pipe away from the ventilation pipe is connected to the cooling air ring, and the cooling fan is installed at the bottom of the inner wall of the installation box.

[0009] Preferably, a box door is provided on the front of the installation box, material guide rollers are installed on the top of the inner side of the elevated frame and the top of one side of the elevated frame, the hot end of the semiconductor refrigerator is arranged on the outside of the air inlet duct, and the cold end of the semiconductor refrigerator is arranged on the inside of the air inlet duct, a dust filter is installed at one end of the air inlet duct, and the air inlet duct extends to the outside through the installation box.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] During use, the thickness of the film can be adjusted by adjusting the adjustable blowing die to change the size of the film gap, or the air intake of the ventilation pipe can be adjusted by the speed regulating valve, and the wind speed can be indirectly adjusted to change the thickness of the film, thereby achieving fine-tuning of the film thickness. When cooling the film during use, the semiconductor refrigerator can be started to cool the inside of the air inlet pipe, thereby making the air temperature inhaled by the cooling fan lower, and the blown air will also become cooler, the cooling effect is improved, and the cooling efficiency of the film is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is an enlarged structural diagram of the utility model A;

[0014] Figure 3 This is the internal structure diagram of the installation box of the utility model;

[0015] Figure 4 It is a structural diagram of the air inlet mechanism of the utility model.

[0016] In the figure: 1. base; 2. screw extruder; 3. controller; 4. blow molding table; 5. adjustable blow molding die; 6. cooling air ring; 7. connecting plate; 8. overhead frame; 9. extrusion pipe; 10. herringbone plate; 11. guide roller; 12. installation box; 13. winder; 14. feed hopper; 15. cooling fan; 16. ventilation duct; 17. blast duct; 18. speed regulating valve; 19. air inlet mechanism; 20. air inlet duct; 21. semiconductor refrigerator; 22. dust filter; 23. box door; 24. temperature sensor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-4 The utility model provides a film blowing machine with adjustable film thickness, comprising a base 1, a screw extruder 2 is fixedly installed on the top of the base 1, a blowing platform 4 is installed on the top of one side of the base 1, an adjustable blowing die 5 is arranged in the middle of the blowing platform 4, a cooling air ring 6 is arranged on the top of the blowing platform 4, a connecting plate 7 is connected to the bottom of one side of the base 1, a high frame 8 is connected to one side of the connecting plate 7, a herringbone plate 10 is arranged on the top of the inner side of the high frame 8, an installation box 12 is installed at the bottom of the high frame 8, a cooling fan 15 is installed inside the installation box 12, a winder 13 is installed at the bottom of one side of the high frame 8, and a cooling fan 15 is installed inside the installation box 12. The output end of the fan 15 is connected to a ventilation pipe 16, one end of the ventilation pipe 16 is connected to a blast pipe 17, a speed regulating valve 18 is installed in the middle of the ventilation pipe 16, an air inlet mechanism 19 is installed at the input end of the cooling fan 15, the air inlet mechanism 19 includes an air inlet pipe 20 and a semiconductor refrigerator 21 installed inside the air inlet pipe 20, a temperature sensor 24 is installed on one side of the air inlet pipe 20, a controller 3 is installed on one side of the front of the base 1, and the screw extruder 2, the cooling fan 15, the winder 13, the semiconductor refrigerator 21 and the temperature sensor 24 are all electrically connected to the external power supply through the controller 3;

[0019] In this embodiment, the plastic solid is heated, melted and extruded by the screw extruder 2, and the extruded plastic liquid is pressed out through the adjustable blow molding die 5. At the same time, the cooling fan 15 can blow air to the plastic at the position of the adjustable blow molding die 5 through the cooling air ring 6 to perform blow molding and cooling. The blown expanded film is continuously squeezed from bottom to top through the herringbone plate 10, and then the expanded plastic film is flattened and rolled. The flattened film is guided by the guide roller 11, and finally the film is wound by the winder 13.

[0020] See also Figure 1-4 , one side of the top of the screw extruder 2 is connected to a hopper 14, the output end of the screw extruder 2 is connected to an extrusion tube 9, the extrusion tube 9 is connected to the adjustable blow molding die 5, the cooling air ring 6 is matched with the adjustable blow molding die 5, and the herringbone plate 10 is correspondingly arranged with the adjustable blow molding die 5, the top of the herringbone plate 10 is provided with a guide groove, and the expanded product after the blown plastic film passes through the guide groove on the herringbone plate 10 through the top during use is flattened, the end of the blast pipe 17 away from the ventilation pipe 16 is connected to the cooling air ring 6, and the cooling fan 15 is installed at the bottom of the inner wall of the installation box 12;

[0021] In this embodiment, the air intake of the ventilation pipe 16 is adjusted by the speed regulating valve 18, and the wind speed is indirectly adjusted to change the thickness of the film. Specifically, when the air volume is large, the cooling wind passing through the cooling air ring 6 is relatively large, and the film is quickly blown to the top position and then rolled up, thereby shortening the inflation time of the plastic film, so that the film will be thicker. Similarly, when the air volume is lowered, the wind passing through the cooling air ring 6 is relatively small, and the film can be inflated for a slightly longer time, so that the film will be thinner.

[0022] See also Figure 1-4 A box door 23 is provided on the front of the installation box 12, a material guide roller 11 is installed on the top of the inner side of the elevated frame 8 and the top of one side of the elevated frame 8, the hot end of the semiconductor refrigerator 21 is arranged on the outer side of the air inlet pipe 20, and the cold end of the semiconductor refrigerator 21 is arranged on the inner side of the air inlet pipe 20, a dust filter 22 is installed at one end of the air inlet pipe 20, and the air inlet pipe 20 passes through the installation box 12 and extends to the outside;

[0023] In this embodiment, when the film is cooled during use, the semiconductor refrigerator 21 can be started to cool the inside of the air inlet pipe 20, so that the air temperature inhaled by the cooling fan 15 is lower, and the blown air will also become cooler, thereby improving the cooling effect.

[0024] In specific use, the utility model is a film blowing machine with adjustable film thickness. During use, the plastic solid is heated, melted and extruded by the screw extruder 2, and the extruded plastic liquid is pressed out through the adjustable blowing die 5. The cooling fan 15 can blow air to the plastic extruded by the adjustable blowing die 5 through the cooling air ring 6 to blow and cool the plastic. The cooled and formed plastic film is flattened by the herringbone plate 10 on the top, and finally the film is wound by the winder 13. During the use of the equipment, the thickness of the film can be adjusted by adjusting the size of the film gap by adjusting the adjustable blowing die 5, and the air intake of the ventilation pipe 16 can be adjusted by the speed regulating valve 18. Then the wind speed is adjusted to change the thickness of the film. Specifically, when the wind volume is large, the cooling wind passing through the cooling air ring 6 is relatively large, and the film is quickly blown to the top position and then rolled up, thereby shortening the blowing time of the plastic film, so that the film will be thicker. Similarly, when the air volume is lowered, the wind passing through the cooling air ring 6 is relatively small, and the film can be blown for a slightly longer time, so that the film will be thinner, thereby achieving fine-tuning of the film thickness. When the film is cooled during use, the semiconductor refrigerator 21 can be started to cool the inside of the air inlet pipe 20, thereby making the air temperature inhaled by the cooling fan 15 lower, and the blown air will also become cooler, the cooling effect is improved, and the cooling efficiency of the film is improved.

[0025] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A film blowing machine with adjustable film thickness, comprising a base (1), characterized in that: A screw extruder (2) is fixedly mounted on the top of the base (1); a blow molding table (4) is mounted on the top of one side of the base (1); an adjustable blow molding die (5) is disposed in the middle of the blow molding table (4); a cooling air ring (6) is disposed on the top of the blow molding table (4); a connecting plate (7) is connected to the bottom of one side of the base (1); a high frame (8) is connected to one side of the connecting plate (7); a herringbone plate (10) is disposed on the top of the inner side of the high frame (8); an installation box (12) is mounted on the bottom of the high frame (8); a cooling fan (12) is mounted inside the installation box (12). 15), a winder (13) is installed at the bottom of one side of the elevated frame (8), the output end of the cooling fan (15) is connected to a ventilation pipe (16), one end of the ventilation pipe (16) is connected to a blast pipe (17), a speed regulating valve (18) is installed in the middle of the ventilation pipe (16), and an air intake mechanism (19) is installed at the input end of the cooling fan (15), the air intake mechanism (19) includes an air intake pipe (20) and a semiconductor refrigerator (21) installed inside the air intake pipe (20), and a temperature sensor (24) is installed on one side inside the air intake pipe (20).

2. A film blowing machine with adjustable film thickness according to claim 1, characterized in that: A controller (3) is installed on one side of the front of the base (1), and the screw extruder (2), cooling fan (15), winder (13), semiconductor refrigerator (21) and temperature sensor (24) are all electrically connected to an external power supply through the controller (3).

3. A film blowing machine with adjustable film thickness according to claim 2, characterized in that: One side of the top of the screw extruder (2) is connected to a feed hopper (14), and the output end of the screw extruder (2) is connected to an extrusion tube (9), and the extrusion tube (9) is connected to an adjustable blow molding die (5).

4. A film blowing machine with adjustable film thickness according to claim 1, characterized in that: The cooling air ring (6) matches the adjustable blow mould (5), and the herringbone plate (10) is arranged corresponding to the adjustable blow mould (5), and a material guide groove is provided on the top of the herringbone plate (10).

5. The film blowing machine with adjustable film thickness according to claim 1, characterized in that: One end of the blast pipe (17) away from the ventilation pipe (16) is in communication with the cooling air ring (6), and the cooling fan (15) is installed at the bottom of the inner wall of the installation box (12).

6. The film blowing machine with adjustable film thickness according to claim 1, characterized in that: The front of the installation box (12) is provided with a box door (23), and the top of the inner side of the elevated frame (8) and the top of one side of the elevated frame (8) are both provided with material guide rollers (11).

7. The film blowing machine with adjustable film thickness according to claim 1, characterized in that: The hot end of the semiconductor refrigerator (21) is arranged on the outside of the air inlet pipe (20), and the cold end of the semiconductor refrigerator (21) is arranged on the inside of the air inlet pipe (20). A dust filter (22) is installed at one end of the air inlet pipe (20), and the air inlet pipe (20) passes through the installation box (12) and extends to the outside.

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