Film blowing mechanism of film blowing machine

Abstract

The utility model discloses a film blowing mechanism of a film blowing machine, which comprises a bottom plate, the top of the bottom plate is provided with a film blowing mechanism used for melting plastic to blow a film, a feeding mechanism used for providing the molten plastic is arranged above the bottom plate, and a heating mechanism used for preventing the molten plastic from being solidified is arranged in the feeding mechanism. The top of the feeding mechanism is provided with a blocking mechanism used for conducting back blowing cleaning on the interior of the film blowing mechanism and the interior of the feeding mechanism in a matched mode. The utility model solves the problem that in the prior art, the solidification speed of molten plastic is accelerated in winter or in cold areas, so that propeller blades are stuck. And the molten plastic transportation speed is not uniform. Compared with the prior art, the problems that the propeller blades are blocked due to solidification of the molten plastic and the cleaning is inconvenient due to solidification of the molten plastic in the propeller blades after the propeller blades are not used for a period of time are solved, and the problems that the propeller blades are blocked due to solidification of the molten plastic and the cleaning is inconvenient due to solidification of the molten plastic in the propeller blades after the propeller blades are not used for a long time are solved.

Description

Technical Field

[0001] This utility model relates to the field of blown film machine technology, specifically a blown film mechanism for a blown film machine. Background Technology

[0002] The film blowing mechanism is the core component of a blown film machine. Its function is to heat and melt plastic particles and then form a continuous film through a blown film process. This mechanism transforms solid plastic particles into a uniform film material through steps such as high-temperature melting, air pressure forming, and traction cooling.

[0003] Referring to the existing Chinese patent publication number CN221756841U, a blown film mechanism for a blown film machine is disclosed, relating to the field of blown film machine technology. The mechanism includes a blown film head, with a spacer and an air jet pipe fixedly installed inside the blown film head, and multiple inlet pipes fixedly installed on the outside of the blown film head; an extrusion pipe, with a spiral auger rotatably installed inside the extrusion pipe, and one end of the extrusion pipe movably inserted into the inlet pipes; and an installation mechanism for fixing the extrusion pipe and the inlet pipes. The installation mechanism includes an annular plate, a clamping plate, and an L-plate. The clamping plate is fixedly connected to the bottom of the annular plate, a slot is provided at the top of the extrusion pipe, the clamping plate is movably clamped into the slot, and the L-plate is slidably connected to the top side of the annular plate. A positioning groove is provided on the outside of the blown film head.

[0004] The aforementioned blown film mechanism of the blown film machine facilitates quick connection and disassembly of the blown film mechanism and the extrusion tube through the cooperation of the L-plate, clamping plate, and annular plate, thereby simplifying cleaning and replacement and improving usability. However, this blown film mechanism still has some drawbacks, such as: in winter or cold regions, the molten plastic solidifies faster, causing the propeller blades to jam; uneven transport speed of molten plastic; and the solidification of molten plastic inside the propeller blades after a period of non-use, making cleaning inconvenient. Therefore, we need to propose a blown film mechanism for a blown film machine. Utility Model Content

[0005] The purpose of this invention is to provide a blown film mechanism for a blown film machine, which has the advantage of preventing molten plastic from solidifying, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a blown film machine blown film mechanism, including a base plate, a blown film mechanism for blowing molten plastic into a film is provided on the top of the base plate, a feeding mechanism for providing molten plastic is provided above the base plate, a heating mechanism for preventing the molten plastic from solidifying is provided inside the feeding mechanism, and a blocking mechanism for backflushing and cleaning the blown film mechanism and the feeding mechanism is provided on the top of the feeding mechanism.

[0007] Preferably, the blown film mechanism includes an air compressor, which is disposed on the top of the base plate. The output end of the air compressor is provided with a connecting pipe, and a placement plate is provided at the end of the connecting pipe away from the air compressor. A through hole is opened at the bottom of the placement plate and penetrates the placement plate. The connecting pipe is adapted to the through hole, and a guide mechanism is provided on the surface of the placement plate.

[0008] Preferably, the guiding mechanism includes a limiting shell, which is disposed on the top of the placement plate. The top of the limiting shell has several ventilation holes that penetrate the limiting shell. The bottom of the placement plate is provided with a support frame, and the bottom of the support frame is connected to the top of the base plate.

[0009] Preferably, the feeding mechanism includes a housing, which is disposed above the base plate. The outer wall of the housing has a plurality of feeding holes that penetrate the housing. The outer wall of the housing is provided with a feeding pipe that is adapted to the feeding holes. The surface of the feeding pipe has a feeding hole that penetrates the feeding pipe. A feeding pipe is provided above the feeding pipe and is adapted to the feeding hole. The top of the feeding pipe is provided with a first connecting plate. The surface of the first connecting plate has a first connecting hole that penetrates the first connecting plate. The top of the housing is provided with a first mounting plate. The surface of the first mounting plate has a first mounting hole that penetrates the first mounting plate. A transmission mechanism is provided inside the feeding pipe.

[0010] Preferably, the transmission mechanism includes a transmission rod disposed inside the feed pipe. The outer wall of the transmission rod is provided with propeller blades that are adapted to the inner wall of the feed pipe. A first flange is provided at the end of the feed pipe away from the outer shell. A second flange is provided on one side of the first flange. A first screw is provided on one side of the second flange and passes through the second flange and the first flange. A first nut is provided on one side of the first flange and is adapted to the first screw. A mounting block is provided on one side of the second flange. A servo motor is provided on one side of the mounting block. One end of the transmission rod passes through the second flange, the first flange, and the mounting block and is connected to the output end of the servo motor.

[0011] Preferably, the heating mechanism includes a placement hole that opens into the interior of the outer casing, and a heating rod is disposed inside the placement hole. A retaining plate is disposed at the bottom of the outer casing and is adapted to the position of the placement hole.

[0012] Preferably, the blocking mechanism includes a second mounting plate, which is disposed above the housing. The surface of the second mounting plate has a second mounting hole, and a second screw is disposed above the second mounting plate and passes through the second mounting hole and the first mounting hole. A second nut is threadedly connected to the surface of the second screw.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model includes a blown film mechanism for blowing molten plastic into a film. A feeding mechanism supplies the molten plastic to the blown film mechanism. A heating mechanism prevents the molten plastic from solidifying and prevents the propeller blades from jamming, which could lead to uneven feeding. A blocking mechanism assists in backflushing during cleaning of the blown film mechanism and the feeding mechanism.

[0015] 2. Compared with existing technologies, this invention avoids the problems of propeller blade jamming due to the accelerated solidification of molten plastic in winter or cold regions, resulting in uneven transport of molten plastic, and the inconvenience of cleaning caused by solidified molten plastic inside the propeller blade after a period of non-use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the present invention;

[0018] Figure 3 This is a cross-sectional view of the air compressor of this utility model;

[0019] Figure 4 This utility model Figure 2 Enlarged view of point A;

[0020] Figure 5 This is a structural diagram of the blocking mechanism of this utility model;

[0021] Figure 6 This is a cross-sectional view of the second mounting plate of this utility model.

[0022] In the diagram: 1. Base plate; 2. Air compressor; 3. Connecting pipe; 4. Placement plate; 5. Through hole; 6. Limiting shell; 7. Vent hole; 8. Support frame; 9. Outer shell; 10. Feeding hole; 11. Feeding pipe; 12. Feeding hole; 13. First connecting plate; 14. First connecting hole; 15. First mounting plate; 16. First mounting hole; 17. Transmission rod; 18. Propeller blade; 19. First flange; 20. Second flange; 21. First screw; 22. First nut; 23. Mounting block; 24. Servo motor; 25. Placement hole; 26. Heating rod; 27. Clamping plate; 28. Second mounting plate; 29. ​​Second mounting hole; 30. Second screw; 31. Second nut; 32. Feeding pipe. Detailed Implementation

[0023] 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 protection scope of the present utility model.

[0024] Please see Figures 1-6 This utility model provides a technical solution: a blown film machine blown film mechanism, including a base plate 1, and a blown film mechanism for blowing molten plastic on the top of the base plate 1; the blown film mechanism includes an air compressor 2, which is located on the top of the base plate 1, and a connecting pipe 3 is provided at the output end of the air compressor 2. A placement plate 4 is provided at the end of the connecting pipe 3 away from the air compressor 2, and a through hole 5 is provided at the bottom of the placement plate 4 and penetrates the placement plate 4. The connecting pipe 3 is adapted to the through hole 5, and a guide mechanism is provided on the surface of the placement plate 4.

[0025] The guiding mechanism includes a limiting shell 6, which is located on top of the placement plate 4. Several ventilation holes 7 are provided on the top of the limiting shell 6 and penetrate through it. A support frame 8 is provided at the bottom of the placement plate 4, and the bottom of the support frame 8 is connected to the top of the base plate 1. After operation stops, the air compressor 2 should also open a small amount of airflow to prevent the ventilation holes 7 from becoming blocked.

[0026] A feeding mechanism for supplying molten plastic is provided above the base plate 1. The feeding mechanism includes a housing 9, which is located above the base plate 1. The outer wall of the housing 9 has several feeding holes 10 that penetrate the housing 9. A feeding pipe 11 is provided on the outer wall of the housing 9 and is adapted to the feeding holes 10. A feeding hole 12 is provided on the surface of the feeding pipe 11 and penetrates the feeding pipe 11. A feeding pipe 32 is provided above the feeding pipe 11 and is adapted to the feeding hole 12. A first connecting plate 13 is provided at the top of the feeding pipe 32. A first connecting hole 14 is provided on the surface of the first connecting plate 13 and penetrates the first connecting plate 13. A first mounting plate 15 is provided at the top of the housing 9. A first mounting hole 16 is provided on the surface of the first mounting plate 15 and penetrates the first mounting plate 15. A transmission mechanism is provided inside the feeding pipe 11.

[0027] The transmission mechanism includes a transmission rod 17, which is disposed inside the feed pipe 11. A propeller blade 18 is mounted on the outer wall of the transmission rod 17 and is adapted to the inner wall of the feed pipe 11. A first flange 19 is disposed at the end of the feed pipe 11 furthest from the outer casing 9. A second flange 20 is disposed on one side of the first flange 19. A first screw 21 is disposed on one side of the second flange 20 and passes through the second flange 20 and the first flange 19. A first nut 22 is disposed on one side of the first flange 19 and is adapted to the first screw 21. A mounting block 23 is disposed on one side of the second flange 20, and a servo motor 24 is disposed on one side of the mounting block 23. One end of the transmission rod 17 passes through the second flange 20, the first flange 19, and the mounting block 23 and connects to the output end of the servo motor 24. A first mounting plate 15 is used to connect the incoming material pipeline, and bolts pass through the first mounting hole 16 to fix it.

[0028] During the blown film process: The servo motor 24 is turned on, and its output drives the transmission rod 17 to rotate, causing the propeller blades 18 to rotate and transport the incoming molten plastic into the interior of the outer shell 9. The molten plastic is extruded between the outer shell 9 and the limiting shell 6. The air compressor 2 is turned on, and compressed air enters the interior of the limiting shell 6 through the connecting pipe 3 and the through hole 5, and is blown out through the vent hole 7, completing the blown film process. Once the required size is achieved, the worker uses tools to cut it.

[0029] The feeding mechanism has an internal heating mechanism to prevent the molten plastic from solidifying. The heating mechanism includes a placement hole 25, which opens into the interior of the outer casing 9. A heating rod 26 is placed inside the placement hole 25. A retaining plate 27 is provided at the bottom of the outer casing 9 and is adapted to the position of the placement hole 25. The heating rod 26 is used to prevent the molten plastic from solidifying.

[0030] The top of the feeding mechanism is provided with a blocking mechanism for backflushing and cleaning the internal parts of the blown film mechanism and the feeding mechanism; the blocking mechanism includes a second mounting plate 28, which is located above the housing 9. The surface of the second mounting plate 28 is provided with a second mounting hole 29. A second screw 30 is provided above the second mounting plate 28 and passes through the second mounting hole 29 and the first mounting hole 16. A second nut 31 is threadedly connected to the surface of the second screw 30.

[0031] The specific cleaning process is as follows: Turn on the heating rod 26 to melt the plastic. Remove the first nut 22 and the first screw 21. Remove the second flange 20, transmission rod 17, propeller blade 18, mounting block 23, and servo motor 24 for individual manual cleaning. Place the second mounting plate 28 on top of the first mounting plate 15, aligning the first mounting hole 16 with the second mounting hole 29, and install the second screw 30 and the second nut 31 to secure them. Turn on the air compressor 2 to pressurize the inside of the equipment; the molten plastic will then flow out from the end of the feed pipe 11 near the first flange 19, completing the cleaning process.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A blown film mechanism for a blown film machine, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with a blown film mechanism for blowing film from molten plastic. Above the base plate (1) is a feeding mechanism for providing molten plastic. Inside the feeding mechanism is a heating mechanism for preventing the molten plastic from solidifying. The top of the feeding mechanism is a blocking mechanism for backflushing and cleaning the blown film mechanism and the inside of the feeding mechanism.

2. The blown film mechanism of a blown film machine according to claim 1, characterized in that: The blown film mechanism includes an air compressor (2), which is located on the top of the base plate (1). The output end of the air compressor (2) is provided with a connecting pipe (3). The end of the connecting pipe (3) away from the air compressor (2) is provided with a placement plate (4). The bottom of the placement plate (4) is provided with a through hole (5) that penetrates the placement plate (4). The connecting pipe (3) is adapted to the through hole (5). The surface of the placement plate (4) is provided with a guide mechanism.

3. The blown film mechanism of a blown film machine according to claim 2, characterized in that: The guiding mechanism includes a limiting shell (6), which is disposed on the top of the placement plate (4). The top of the limiting shell (6) has several ventilation holes (7) that penetrate the limiting shell (6). The bottom of the placement plate (4) is provided with a support frame (8), and the bottom of the support frame (8) is connected to the top of the base plate (1).

4. The blown film mechanism of a blown film machine according to claim 3, characterized in that: The feeding mechanism includes a housing (9) which is located above the base plate (1). The outer wall of the housing (9) has several feeding holes (10) that penetrate the housing (9). The outer wall of the housing (9) is provided with a feeding pipe (11) that is adapted to the feeding holes (10). The surface of the feeding pipe (11) has a feeding hole (12) that penetrates the feeding pipe (11). The upper part of the feeding pipe (11) is provided with a feeding pipe (32) that is adapted to the feeding hole (12). The top of the feeding pipe (32) is provided with a first connecting plate (13). The surface of the first connecting plate (13) has a first connecting hole (14) that penetrates the first connecting plate (13). The top of the housing (9) is provided with a first mounting plate (15). The surface of the first mounting plate (15) has a first mounting hole (16) that penetrates the first mounting plate (15). The inside of the feeding pipe (11) is provided with a transmission mechanism.

5. The blown film mechanism of a blown film machine according to claim 4, characterized in that: The transmission mechanism includes a transmission rod (17) which is disposed inside the feed pipe (11). The outer wall of the transmission rod (17) is provided with a propeller blade (18) that is adapted to the inner wall of the feed pipe (11). A first flange (19) is provided at the end of the feed pipe (11) away from the outer shell (9). A second flange (20) is provided on one side of the first flange (19). A first screw (21) is provided on one side of the second flange (20) and passes through it. The second flange (20) and the first flange (19) are provided with a first nut (22) on one side of the first flange (19) and are adapted to the first screw (21). The second flange (20) is provided with a mounting block (23) on one side of the mounting block (23) and a servo motor (24) is provided on one side of the mounting block (23). One end of the transmission rod (17) passes through the second flange (20), the first flange (19) and the mounting block (23) and is connected to the output end of the servo motor (24).

6. The blown film mechanism of a blown film machine according to claim 5, characterized in that: The heating mechanism includes a placement hole (25) that opens into the interior of the outer shell (9). A heating rod (26) is installed inside the placement hole (25). A retaining plate (27) is installed at the bottom of the outer shell (9) and is adapted to the position of the placement hole (25).

7. The blown film mechanism of a blown film machine according to claim 6, characterized in that: The blocking mechanism includes a second mounting plate (28), which is disposed above the outer casing (9). A second mounting hole (29) is provided on the surface of the second mounting plate (28). A second screw (30) is provided above the second mounting plate (28) and passes through the second mounting hole (29) and the first mounting hole (16). A second nut (31) is threadedly connected to the surface of the second screw (30).

Images