Cleaning device for bubble stabilizing frame of film blowing machine

Abstract

The utility model relates to a film blowing machine bubble stabilizing frame cleaning device which comprises a bubble stabilizing frame and an annular support, the annular support is arranged on the peripheral side of the bubble stabilizing frame in a sleeving mode, the annular support is slidably connected with a first frame body, the first frame body is provided with air suction heads in one-to-one correspondence with the multiple supports, and the bottom end of the annular support is provided with a second frame body; dust collection cavities are formed in the two opposite ends of the second frame body, air suction pumps are connected to the dust collection cavities through air pipes, corrugated pipes communicated with the dust collection cavities are arranged on air suction heads, a first screw rod is rotationally connected to one end of an annular support, and a first guide rod is arranged at the other end of the annular support; dust attached to the roller is sucked into the dust collection cavity through the air suction head by means of the air suction pump, so that the possibility that the dust is attached to the roller is reduced, and the probability that the dust is attached to a plastic film when the film blowing machine works is reduced. The film blowing device has the effect of improving the film blowing quality of the film blowing machine.

Description

Technical Field

[0001] This application relates to the technical field of bubble stabilizing frames, and particularly to a cleaning device for a bubble stabilizing frame of a film blowing machine. Background Art

[0002] A film blowing machine is a device that melts plastic particles and blows them into films. By extruding and blowing the melted plastic particles into films, continuous production of plastic films is achieved. However, the film bubble tube is prone to severe shaking and swinging during the rising process. Therefore, a bubble stabilizing frame is needed to limit the excessive deviation of the film bubble tube and ensure the thickness uniformity and dimensional stability of the film.

[0003] The bubble stabilizing frame in the prior art is a bracket circumferentially arranged outside the film moving path. A number of rollers are provided on each bracket. By adjusting the inclination degree of the bracket, the rollers can be moved away from or closer to the film, thereby realizing the adjustment and support of the film during the upward movement.

[0004] However, the roller part of the bubble stabilizing frame that is long-term in the air duct usually adheres or adsorbs a certain amount of dust. The accumulation of dust is likely to cause the accumulation of static electricity. During the rising process of the film bubble tube, the outer surface of the plastic film contacts the accumulated dust and generates friction. Under the action of static electricity, a large amount of dust on the roller is transferred to the outer surface of the plastic film, so that a large amount of dust adheres to the plastic film blown by the film blowing machine, and the film blowing quality of the film blowing machine is reduced, which has obvious deficiencies. Utility Model Content

[0005] In order to improve the film blowing quality of the film blowing machine, this application provides a cleaning device for a bubble stabilizing frame of a film blowing machine.

[0006] The cleaning device for a bubble stabilizing frame of a film blowing machine provided by this application adopts the following technical solutions:

[0007] A cleaning device for a bubble stabilizing frame of a film blowing machine includes a bubble stabilizing frame and an annular bracket. The bubble stabilizing frame includes a plurality of brackets, and a plurality of rollers are provided on each bracket. The annular bracket is sleeved on the outer peripheral side of the bubble stabilizing frame. A first frame is slidably connected to the annular bracket. The first frame is provided with suction heads corresponding to the plurality of brackets one by one. The suction direction of the suction head is set towards the roller. A second frame is provided at the bottom end of the annular bracket. Dust collection chambers are opened at both opposite ends of the second frame. A suction pump is connected to the dust collection chamber through a trachea. A corrugated pipe communicating with the dust collection chamber is provided on the suction head. One end of the annular bracket is rotatably connected to a first screw rod, and a first guide rod is provided at the other end. One end of the first frame is threadedly connected to the first screw rod, and the other end is slidably connected to the first guide rod.

[0008] By adopting the above technical solution, when cleaning is required, the suction pump is started and the first screw rod is rotated. The first screw rod drives the first frame to move along the length direction of the bubble stabilizer. The suction pump generates a negative airflow towards the suction head through the air pipe and the corrugated pipe. When the suction head moves near each roller, the dust on the roller is sucked into the dust collection cavity under the action of the negative airflow, thereby reducing the possibility of dust adhering to the roller and reducing the probability of dust adhering to the plastic film during the operation of the film blowing machine, thus improving the film blowing quality of the film blowing machine.

[0009] Optionally, a rodless cylinder corresponding to each of the multiple brackets is arranged on the first frame. The length direction of the rodless cylinder is parallel to the length direction of the corresponding roller. An installation block is arranged on the moving part of the rodless cylinder, and the suction head is connected to the installation block.

[0010] By adopting the above technical solution, during cleaning, the rodless cylinder is started. The rodless cylinder drives the installation block to reciprocate along the length direction of the rodless cylinder. During the movement, the installation block drives the suction head to move along the length direction of the roller. The suction head comprehensively cleans the dust on the roller during the movement. Such a setting further expands the cleaning range of the suction head and further reduces the possibility of dust remaining on the roller, thereby further improving the film blowing quality of the film blowing machine.

[0011] Optionally, a third frame is arranged on the annular bracket. The third frame is sleeved on the outer peripheral side of the first frame. The third frame is provided with a cavity communicating with each other. A winding roller is rotatably connected in each cavity, and a protective film is wound around the winding roller. An unfolding assembly for driving the plurality of protective films to unfold is arranged on the annular bracket.

[0012] By adopting the above technical solution, the unfolding assembly unfolds the plurality of protective films together. The plurality of unfolded protective films jointly enclose a relatively closed area, thereby reducing the amplitude of dust diffusion and avoiding the possibility of dust spreading to the surrounding environment during the cleaning process. At the same time, it increases the probability of dust being absorbed by the suction head into the dust collection cavity and ensures the cleanliness of the film blowing working area.

[0013] Optionally, the unfolding assembly includes a second screw rod and a second guide rod. The second screw rod is rotatably connected to the annular bracket. One end of the third frame is threadedly connected to the second screw rod, and the other end is slidably connected to the second guide rod. A first magnetic strip is arranged at one end of the protective film away from the winding roller, and a second magnetic strip for adsorbing the first magnetic strip is arranged on the second frame.

[0014] By adopting the above technical solution, the worker adsorbs the first magnetic strip on the second magnetic strip. At this time, one end of the protective film away from the winding roller is fixed on the surface of the second frame body. Then, the second screw rod is rotated, and the second screw rod drives the third frame body to move along the annular bracket in a direction away from the second frame body, and the protective film gradually unfolds to form a sealing barrier.

[0015] Optionally, a torsion spring is provided at one end of each protective film. The end face of the torsion spring perpendicular to the length direction is fixedly connected to the winding roller. In the natural state of the torsion spring, the protective film is completely wound on the winding roller.

[0016] By adopting the above technical solution, when the protective film is in a relaxed state, the tension on the torsion spring decreases. Under the action of the elastic force, the torsion spring drives the plastic film in the relaxed part to automatically wind around the winding roller, so that the unfolded part of the protective film is in a tensioned state, reducing the possibility that the dust diffusion degree increases due to the relaxation of the protective film, improving the protection effect of the protective film. After the cleaning work is completed, the worker pulls the first magnetic strip to separate the first magnetic strip and the second magnetic strip. The tension on the torsion spring disappears, and under the action of the elastic force, the torsion spring pulls the protective film to wind back on the winding roller again, thus realizing the automatic winding of the protective film and ensuring the continuous use of the protective film.

[0017] Optionally, a filter plate is provided in the dust collection chamber.

[0018] By adopting the above technical solution, the dust sucked by the suction pump moves to the dust collection chamber through the corrugated pipe. During the process of the dust flowing towards the suction pump in the dust collection chamber, the dust is blocked by the filter plate and blocked in the dust collection chamber. Such a setting reduces the possibility of dust entering the inside of the suction pump through the air pipe, reduces the influence of dust on the service life of the suction pump, and ensures the smooth progress of the cleaning process.

[0019] Optionally, an opening communicating with the dust collection chamber is provided on the second frame body. A dust outlet box is slidably connected in the opening. The bottom surface of the dust outlet box is inclined. A dust outlet is provided on the side wall of the dust outlet box. The top surface of the dust outlet box is fixedly connected to the bottom surface of the filter plate.

[0020] By adopting the above technical solution, the dust sucked by the suction pump moves to the dust collection chamber through the air pipe. During the process of the dust flowing towards the suction pump in the dust collection chamber, the dust is blocked by the filter plate and blocked in the dust collection chamber. Such a setting reduces the possibility of dust entering the inside of the suction pump through the air pipe, reduces the influence of dust on the service life of the suction pump, and ensures the smooth progress of the cleaning process.

[0021] Optionally, an opening communicating with the dust collection chamber is formed in the second housing. A dust outlet box is slidably connected in the opening. The bottom surface of the dust outlet box is inclined. A dust outlet is formed in the side wall of the dust outlet box. The top surface of the dust outlet box is fixedly connected to the bottom surface of the filter plate.

[0022] By adopting the above technical solution, dust is blocked by the filter plate and accumulates in the dust removal box. When too much dust accumulates in the dust outlet box, the worker pulls the dust outlet box downward. At this time, the dust outlet gradually disengages from the dust collection chamber, and the dust flows out from the dust outlet along the inclined surface of the dust outlet box, thereby realizing the centralized cleaning of the dust on the roller.

[0023] Optionally, sliders are arranged at opposite ends of the dust outlet box. Sliding grooves slidably matched with the sliders are formed in the opposite side walls of the opening. Springs are arranged in the sliding grooves. One end of each spring is connected to the inner bottom wall of the sliding groove, and the other end is connected to the slider. When the top surface of the slider abuts against the inner side wall of the sliding groove, the spring is in a compressed state, and the dust collection chamber blocks the dust outlet.

[0024] By adopting the above technical solution, when cleaning dust, the worker pulls the dust outlet box downward. The downward movement of the dust outlet box increases the compression amount of the spring. After the dust cleaning is completed, the worker cancels the force on the dust outlet box, the pulling force on the spring disappears, and the elastic potential energy accumulated by the spring is instantly released. The spring resets and pushes the slider to impact against the inner side wall of the sliding groove. The vibration energy generated at the moment of impact shakes the dust blocking the surface of the filter plate off the filter plate, thereby realizing the vibration cleaning of the filter plate. The filtering effect of the filter plate is guaranteed, and at the same time, the dust outlet box moves back into the dust collection chamber to receive dust.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. By providing a suction head, a corrugated pipe, a suction pump and a dust collection chamber, the suction head absorbs the dust attached to the roller into the dust collection chamber through the suction pump, thereby reducing the possibility of dust adhering to the roller and reducing the probability of dust adhering to the plastic film during the operation of the blown film machine, thus improving the blown film quality of the blown film machine.

[0027] 2. By providing a first housing and a rodless cylinder, the first housing drives the suction head to move in the length direction of the bubble stabilizing frame, and the rodless cylinder drives the suction head to move along the length direction of the roller. Such an arrangement realizes the all-round cleaning of the bubble stabilizing frame and further reduces the possibility of dust adhering to the roller.

[0028] 3. By providing a protective film and a deployment assembly, the deployment assembly pulls multiple protective films to deploy together, and the multiple deployed protective films jointly enclose a relatively enclosed area, thereby reducing the extent of dust diffusion and avoiding the possibility of dust spreading to the surrounding environment during the cleaning process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of the present application.

[0030] Figure 2 is a schematic structural diagram of the first frame body and the rodless cylinder in an embodiment of the present application.

[0031] Figure 3 is a sectional view of the dust collection chamber in an embodiment of the present application.

[0032] Figure 4 is a sectional view of the third frame body in an embodiment of the present application.

[0033] Description of the reference numerals: 01, bubble stabilizing frame; 011, support; 012, roller; 1, annular support; 2, first frame body; 3, rodless cylinder; 31, mounting block; 4, suction head; 41, corrugated pipe; 5, suction pump; 51, air pipe; 6, second frame body; 7, dust collection chamber; 71, opening; 72, sliding groove; 721, spring; 8, first screw; 81, first guide rod; 82, first motor; 9, dust outlet box; 91, dust outlet; 10, filter plate; 11, slider; 12, third frame body; 121, cavity; 13, winding roller; 131, protective film; 14, deployment assembly; 141, second screw; 142, second guide rod; 143, second motor; 144, first magnetic strip; 145, second magnetic strip; 15, torsion spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0034] The following is a further detailed description of the present application in conjunction with the Figures 1-4 drawings.

[0035] An embodiment of the present application discloses a cleaning device for a bubble stabilizing frame of a film blowing machine.

[0036] Referring to Figure 1 , a cleaning device for a bubble stabilizing frame of a film blowing machine includes a bubble stabilizing frame 01 and an annular support 1. The bubble stabilizing frame 01 includes a plurality of supports 011. In this embodiment, the number of supports 011 is six, and the six supports 011 jointly enclose a hexagonal frame. A plurality of rollers 012 for restricting the plastic film are rotatably connected to each support 011. The plurality of rollers 012 are evenly distributed at equal intervals along the length direction of the support 011. During the film blowing process, the blown plastic bubble tube is restricted by the rollers 012 and cannot deviate excessively, thereby ensuring the thickness uniformity and dimensional stability of the blown plastic film.

[0037] Referring toFigure 1 and Figure 2 A circular support 1 is sleeved on the outer peripheral side of the bubble stabilizing frame 01. The length direction of the circular support 1 is parallel to the length direction of the support 011. A first frame body 2 is slidably connected to the circular support 1. A rodless cylinder 3 corresponding to each of the six rollers 012 is fixedly connected to the inner peripheral surface of the first frame body 2. The length direction of the rodless cylinder 3 is parallel to the length direction of the roller 012. An installation block 31 is fixedly connected to the moving part of each rodless cylinder 3. A suction head 4 is fixedly installed on each installation block 31. The suction direction of each suction head 4 is set to face the nearby roller 012.

[0038] Refer to Figure 2 and Figure 3 Suction pumps 5 are arranged on both opposite sides of the circular support 1. A second frame body 6 is fixedly connected to one end of the circular support 1 away from the circular guide rail. Dust collection chambers 7 are opened at both opposite ends of the second frame body 6. The suction end of the suction pump 5 is communicated with the dust collection chamber 7 through an air pipe 51. A corrugated pipe 41 communicated with the dust collection chamber 7 is communicated with each suction head 4.

[0039] Refer to Figure 2 and Figure 3 One end of the circular support 1 is rotatably connected to a first screw rod 8, and the other end is fixedly connected to a first guide rod 81. One end of the first frame body 2 is threadedly connected to the first screw rod 8, and the other end is slidably connected to the first guide rod 81. A first motor 82 is fixedly installed on the top of the circular support 1. The output shaft of the first motor 82 is coaxially and fixedly connected to the first screw rod 8.

[0040] When cleaning is required, start the suction pump 5 and the first motor 82. The suction pump 5 makes a negative air flow towards the suction head 4 near the suction head 4 through the air pipe 51. The first motor 82 drives the first screw rod 8 to drive the first frame body 2 to move along the length direction of the bubble stabilizing frame 01. When the suction head 4 moves near the roller 012, turn off the first motor 82 and start the rodless cylinder 3. The rodless cylinder 3 drives the suction head 4 through the installation block 31 to move in all directions along the length direction of the roller 012. During the movement of the suction head 4, the dust adhering to the roller 012 is sucked into the corrugated pipe 41 under the disturbance of the negative pressure air flow. The dust moves into the dust collection chamber 7 through the corrugated pipe 41. When the six rollers 012 at the same height are cleaned, the rodless cylinder 3 turns off and the first motor 82 starts. The first motor 82 drives the first frame body 2 to move to the next roller 012 for cleaning. With such a setting, the dust on the bubble stabilizing frame 01 is cleaned in all directions, reducing the probability of dust adhering to the plastic film when the film blowing machine is working, thereby improving the film blowing quality of the film blowing machine.

[0041] Refer to Figure 2 and Figure 3Each dust collecting chamber 7 is provided with an opening 71, and a dust box 9 is slidably connected to the opening 71. The top surface of the dust box 9 is fixedly connected to a filter plate 10. The end of the bellows 41 away from the suction head 4 is connected to the bottom surface of the dust box 9, and the end of the air pipe 51 away from the suction pump 5 is connected to the side wall of the dust collecting chamber 7 near the top surface of the filter plate 10. The airflow carrying dust enters the dust collecting chamber 7 from the bottom surface of the dust box 9. When the airflow passes through the filter plate 10, the dust is blocked by the filter plate 10 and is blocked in the dust box 9, thereby preventing the dust from directly entering the interior of the suction pump 5, ensuring the smooth progress of the cleaning process.

[0042] Reference Figure 2 and Figure 3 The bottom surface of the dust box 9 is set at an angle, and a dust outlet 91 is provided on the side wall of one end of the dust box 9 perpendicular to the length direction. The dust box 9 is provided with a slider 11 on each side. A slide groove 72 that slides with the slider 11 is provided on the inner side wall opposite to the opening 71. A spring 721 is provided in the slide groove 72. One end of the spring 721 is fixedly connected to the inner bottom wall of the slide groove 72, and the other end is fixedly connected to the slider 11. When the top surface of the slider 11 abuts against the inner side wall of the slide groove 72, the spring 721 is compressed, and the dust outlet 91 is blocked by the inner side wall of the dust collecting chamber 7.

[0043] When too much dust accumulates in the dust box 9, the worker pulls the dust box 9 downward, and the dust box 9 moves downward to increase the compression of the spring 721, and the dust flows out from the dust outlet 91 along the inclined surface of the dust box 9. After the dust is cleaned, the worker cancels the force on the dust box 9, the tension on the spring 721 disappears, and the elastic potential energy accumulated in the spring 721 is released instantly. The spring 721 resets and pushes the slider 11 to hit the inner wall of the slide groove 72. The vibration energy generated at the moment of the impact causes the dust blocked on the surface of the filter plate 10 to vibrate away from the filter plate 10, thereby realizing vibration cleaning of the filter plate 10. The filtering effect of the filter plate 10 is guaranteed, and at the same time, the dust box 9 moves back to the dust collecting chamber 7 to receive the dust.

[0044] Reference Figure 4 A third frame 12 is slidably connected to the annular bracket 1. The third frame 12 is square and sleeved on the outer periphery of the first frame 2. The third frame 12 is provided with cavities 121 that are interconnected. A winding roller 13 is rotatably connected in each cavity 121. A protective film 131 is wound around each winding roller 13. An unfolding component 14 for driving the protective film 131 to unfold is provided on the annular bracket 1.

[0045] Reference Figure 4, the unfolding component 14 includes a second screw rod 141 and a second guide rod 142. The second screw rod 141 is rotatably connected to one end of the annular bracket 1, and the second guide rod 142 is fixedly connected to the other side of the annular bracket 1. The length directions of the second screw rod 141 and the second guide rod 142 are parallel to the length direction of the bracket 011. A second motor 143 is fixedly installed at the top end of the annular bracket 1, and the output shaft of the second motor 143 is coaxially and fixedly connected to the second screw rod 141. One end of the third frame 12 is threadedly connected to the second screw rod 141, and the other end is slidably connected to the second guide rod 142. One end of the protective film 131 away from the winding roller 13 is fixedly connected with a first magnetic strip 144, and a second magnetic strip 145 for adsorbing the first magnetic strip 144 is fixedly connected to the surface of the second frame 6.

[0046] Before cleaning, the worker adsorbs the first magnetic strip 144 on the second magnetic strip 145, and then starts the second motor 143. The second motor 143 drives the second screw rod 141 to rotate, and the second screw rod 141 drives the third frame 12 to move along the annular bracket 1. At this time, the protective film 131 gradually unfolds under the fixing component of the first magnetic strip 144 and the second magnetic strip 145. When the third frame 12 moves to the top of the annular bracket 1, the second motor 143 is turned off. At this time, multiple unfolded protective films 131 jointly enclose a relatively closed area, reducing the amplitude of dust diffusion and avoiding the possibility of dust spreading to the surrounding environment during the cleaning process. At the same time, it increases the probability of dust being absorbed by the suction head 4 into the dust collection chamber 7.

[0047] Refer to Figure 4 , a torsion spring 15 is fixedly connected to the side wall of one end of each protective film 131. The end face of the torsion spring 15 perpendicular to the length direction is fixedly connected to the winding roller 13. In the natural state of the torsion spring 15, the protective film 131 is wound on the winding roller 13. When the protective film 131 is in a relaxed state, the tension on the torsion spring 15 decreases, and the torsion spring 15 drives the plastic film in the relaxed part to automatically wind around the winding roller 13 under the action of elastic force, so that the unfolded part of the protective film 131 is in a tensioned state, reducing the possibility of the protective film 131 causing an increase in dust diffusion due to relaxation and improving the protection effect of the protective film 131. After the cleaning work is completed, the worker pulls the first magnetic strip 144 to separate the first magnetic strip 144 from the second magnetic strip 145, the tension on the torsion spring 15 disappears, and the torsion spring 15 pulls the protective film 131 to wind back on the winding roller 13 under the action of elastic force, thus realizing the automatic winding of the protective film 131 and ensuring the continuous use of the protective film 131.

[0048] The implementation principle of a bubble stabilizing frame cleaning device for a blown film machine in an embodiment of this application is as follows: When cleaning is required, the suction pump 5 and the first motor 82 are started. The suction pump 5 generates a negative airflow towards the suction head 4 near the suction head 4 through the air pipe 51. The first motor 82 drives the first screw rod 8 to drive the first frame 2 to move along the length direction of the bubble stabilizing frame 01. When the suction head 4 moves near the roller 012, the first motor 82 is turned off and the rodless cylinder 3 is started. The rodless cylinder 3 drives the suction head 4 through the mounting block 31 to move in all directions along the length direction of the roller 012. During the movement of the suction head 4, the dust adhering to the roller 012 is sucked into the corrugated pipe 41 under the disturbance of the negative pressure airflow. The dust moves through the corrugated pipe 41 to the inside of the dust collection chamber 7. When the six rollers 012 at the same height are cleaned, the rodless cylinder 3 turns off the first motor 82 and starts it. The first motor 82 drives the first frame 2 to move to the next roller 012 for cleaning. With this setting, the dust on the bubble stabilizing frame 01 is cleaned in all directions, reducing the probability of dust adhering to the plastic film when the blown film machine is working, thereby improving the blown film quality of the blown film machine.

[0049] The above are all the preferred embodiments of this application, and the protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A cleaning device for a bubble stabilizing frame of a blown film machine, comprising a bubble stabilizing frame (01) and an annular bracket (1), wherein the bubble stabilizing frame (01) includes a plurality of brackets (011), and a plurality of rollers (012) are arranged on each of the brackets (011), and it is characterized in that, The annular bracket (1) is sleeved on the outer peripheral side of the foam stabilizing frame (01). A first frame body (2) is slidably connected to the annular bracket (1). Suction heads (4) corresponding to the plurality of brackets (011) one by one are arranged on the first frame body (2). The suction direction of the suction head (4) is set towards the roller (012). A second frame body (6) is arranged at the bottom end of the annular bracket (1). Dust collection chambers (7) are formed at both opposite ends of the second frame body (6). A suction pump (5) is connected to the dust collection chamber (7) through an air pipe (51). A corrugated pipe (41) communicating with the dust collection chamber (7) is arranged on the suction head (4). One end of the annular bracket (1) is rotatably connected to a first screw rod (8), and a first guide rod (81) is arranged at the other end. One end of the first frame body (2) is threadedly connected to the first screw rod (8), and the other end is slidably connected to the first guide rod (81).

2. The bubble stabilizer cleaning device of a blown film machine according to claim 1, wherein, A rodless cylinder (3) corresponding to the plurality of brackets (011) one by one is arranged on the first frame body (2). The length direction of the rodless cylinder (3) is parallel to the length direction of the corresponding roller (012). A mounting block (31) is arranged on the moving part of the rodless cylinder (3). The suction head (4) is connected to the mounting block (31).

3. The bubble stabilizing frame cleaning device of a blown film machine according to claim 1, characterized in that, A third frame body (12) is arranged on the annular bracket (1). The third frame body (12) is sleeved on the outer peripheral side of the first frame body (2). A cavity (121) communicating with each other is formed in the third frame body (12). A winding roller (13) is rotatably connected in each cavity (121). A protective film (131) is wound around the winding roller (13). An unfolding assembly (14) for driving the plurality of protective films (131) to unfold is arranged on the annular bracket (1).

4. The bubble stabilizing frame cleaning device for a film blowing machine according to claim 3, characterized in that, The unfolding assembly (14) includes a second screw rod (141) and a second guide rod (142). The second screw rod (141) is rotatably connected to the annular bracket (1). One end of the third frame body (12) is threadedly connected to the second screw rod (141), and the other end is slidably connected to the second guide rod (142). A first magnetic strip (144) is arranged at one end of the protective film (131) away from the winding roller (13). A second magnetic strip (145) for adsorbing the first magnetic strip (144) is arranged on the second frame body (6).

5. The bubble stabilizing frame cleaning device of a blown film machine according to claim 3, characterized in that, A torsion spring (15) is arranged at one end of each protective film (131). The end face perpendicular to the length direction of the torsion spring (15) is fixedly connected to the winding roller (13). In the natural state of the torsion spring (15), the protective film (131) is completely wound on the winding roller (13).

6. The bubble stabilizing frame cleaning device for a film blowing machine according to claim 1, characterized in that, A filter plate (10) is arranged in the dust collection chamber (7).

7. The bubble stabilizing frame cleaning device for a film blowing machine according to claim 6, characterized in that, An opening (71) communicating with the dust collection chamber (7) is formed in the second housing (6). A dust outlet box (9) is slidably connected in the opening (71). The bottom surface of the dust outlet box (9) is inclined. A dust outlet (91) is formed in the side wall of the dust outlet box (9). The top surface of the dust outlet box (9) is fixedly connected to the bottom surface of the filter plate (10).

8. The bubble stabilizing frame cleaning device for a blown film machine according to claim 7, wherein Sliders (11) are arranged at opposite ends of the dust outlet box (9). Sliding grooves (72) slidably engaged with the sliders (11) are formed in opposite side walls of the opening (71). A spring (721) is arranged in the sliding groove (72). One end of the spring (721) is connected to the inner bottom wall of the sliding groove (72), and the other end is connected to the slider (11). When the top surface of the slider (11) abuts against the inner side wall of the sliding groove (72), the spring (721) is in a compressed state, and the dust collection chamber (7) shields the dust outlet (91).

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