Air shroud adjusting structure of plastic film blowing machine

Abstract

The utility model discloses a plastic film blowing machine wind protection ring adjusting structure which comprises a first wind protection ring, a second wind protection ring is arranged on the outer side of the first wind protection ring, a third wind protection ring is arranged on the outer side of the second wind protection ring, and adjusting parts are arranged on the second wind protection ring and the third wind protection ring. The adjusting component comprises notches formed in the outer side of the lower portion of the second fan protection ring and the outer side of the lower portion of the third fan protection ring respectively, through openings formed in one sides of the notches, moving plates arranged in the notches and inserting rods fixedly connected with one sides of the moving plates. The problems that when an existing wind protection ring is used, although the height of the wind protection ring can be adjusted, the stability is relatively poor due to the fact that a clamping ridge part is used for clamping a roller during height adjustment, the wind protection ring is easy to move, the use stability of the wind protection ring is affected, and the practicability is reduced are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to an air protection ring adjustment structure of a plastic film blowing machine. Background Art

[0002] The film blowing machine heats and melts plastic particles and then blows them into thin films. There are many types of film blowing machines, including PE, POF, PVC, etc. The new materials blown out by new particles are new materials with uniform color, cleanness, and good bag stretching. In the film blowing process, the plastic melt flows out of the machine head and is blown into film bubbles. The rising process of the film bubbles needs to be cooled by the cooling air ring. The cooling air ring of the plastic film blowing machine is equipped with an air protection ring. The air protection ring can extend the time for the film bubbles to receive air cooling, improve the cooling effect and stabilize the airflow, thereby stabilizing the film bubbles.

[0003] The existing patent CN220349051U discloses a wind shield adjustment structure for a plastic film blowing machine, which includes a plurality of cylindrical wind shield units, each of which has a different diameter, and the horizontal projection positions of each wind shield unit are arranged in concentric circles; in each of the two adjacent wind shield units, the wind shield unit located on the inner side is called the inner wind shield, and the wind shield unit located on the outer side is called the outer wind shield, wherein the outer wind shield is fixed with at least three rollers, each roller is about the center of the wind shield. The central axis is arranged symmetrically, with the rollers located inside the outer wind shield and near its bottom. The outer side of the inner wind shield is formed with at least three curved slopes, the number of which corresponds to the number of rollers. Each curved slope is arranged symmetrically about the central axis of the wind shield, and the horizontal projection of each curved slope is an arc. Each curved slope also has several stoppers for the rollers to rest on, with each roller of the outer wind shield resting on a corresponding stopper of the inner wind shield. This utility model allows for convenient height adjustment of the wind shield, with a wide range of adjustment.

[0004] Based on the search of the above patents and in combination with the wind shields in the prior art, it was found that although the height of the above wind shield can be adjusted when in use, the roller is clamped at the latching part when adjusting the height, and its stability is relatively poor. The wind shield is easy to move, which affects the stability of the wind shield and thus reduces its practicality. Utility Model Content

[0005] The purpose of the present utility model is to provide an adjustment structure for the wind shield of a plastic film blowing machine, so as to solve the problem that the existing wind shield proposed in the above background technology can adjust the height of the wind shield when in use, but the roller is clamped by the card kan part when adjusting the height, and its stability is relatively poor. The wind shield is easy to move, which affects the stability of the wind shield and thus reduces the practicality.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a wind shield ring adjustment structure for a plastic film blowing machine, comprising a first wind shield ring, a second wind shield ring being provided outside the first wind shield ring, a third wind shield ring being provided outside the second wind shield ring, and adjustment components being provided on the second and third wind shield rings;

[0007] The adjusting component includes recesses respectively opened on the outer side of the lower part of the second wind protection ring and the third wind protection ring, a through hole opened on one side of the recess, a movable plate arranged in the recess, an insertion rod fixedly connected to one side of the movable plate, a sliding rod fixedly connected to the other side of the movable plate, a first spring sleeved on the outer side of the sliding rod, a plurality of evenly arranged insertion holes respectively opened on one side of the first wind protection ring and the second wind protection ring, and a fixing component for improving the stability of use, the insertion rod is plugged into the insertion hole, and the sliding rod is slidably connected to the through hole.

[0008] Preferably, the fixing component includes sliding grooves respectively opened on the outer side of the upper part of the first wind protection ring and the second wind protection ring, a guide rod arranged in the sliding groove, a second spring fixedly connected to one end of the guide rod, a protrusion fixedly connected to the other end of the guide rod, and a plurality of hemispherical grooves evenly arranged inside the second wind protection ring and the third wind protection ring, and the guide rod is slidably connected to the sliding groove.

[0009] Preferably, the first wind protection ring and the second wind protection ring are respectively provided with a limiting groove on one side away from the sliding groove, and the inner walls of the second wind protection ring and the third wind protection ring are respectively fixedly connected with a limiting block, and the limiting block is slidably connected to the limiting groove.

[0010] Preferably, one end of the sliding rod away from the movable plate is fixedly connected to a connecting plate, and one side of the connecting plate is fixedly connected to a pull ring.

[0011] Preferably, a rotation-stop groove is provided on one side of the guide rod, a rotation-stop rod is fixedly connected to the inner wall of the sliding groove, and the rotation-stop rod is slidably connected to the rotation-stop groove.

[0012] Preferably, a protection groove is provided at the bottom of the recess, a protection plate is slidably connected in the protection groove, and the protection plate is fixedly connected to the movable plate.

[0013] Preferably, the limiting groove is T-shaped, and the limiting block is T-shaped.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By providing the first wind shield, the second wind shield, the third wind shield, and the adjustment component, the movement of the sliding rod can drive the movement of the movable plate and the insertion rod, which can cause the first spring to deform. The first spring resets and pushes the insertion rod into the insertion hole, thereby restricting and fixing the adjusted second wind shield and the third wind shield to prevent the second wind shield or the third wind shield from moving, thereby greatly improving practicality and stability.

[0016] 2. By providing a fixing component, when the second wind shield ring and the third wind shield ring are adjusted, the protrusion can be retracted into the slide groove, thereby causing the second spring to deform. The second spring resets to push the protrusion into the hemispherical groove, and the adjusted second wind shield ring and the third wind shield ring can be secondary restricted and fixed, which can further improve practicality and stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the three-dimensional structure provided by the utility model;

[0018] Figure 2 A left side view provided for the present utility model;

[0019] Figure 3 The utility model provides Figure 2 A three-dimensional cross-section at AA in the middle;

[0020] Figure 4 The utility model provides Figure 3 Enlarged view of point B in the middle;

[0021] Figure 5 The utility model provides Figure 3 Enlarged view of point C in the middle.

[0022] In the figure: 1. First wind shield; 11. Second wind shield; 12. Third wind shield; 21. Recess; 22. Through hole; 23. Movable plate; 24. Insert rod; 25. Slide rod; 26. First spring; 27. Insert hole; 31. Slide groove; 32. Guide rod; 33. Second spring; 34. Protrusion; 35. Hemispherical groove; 41. Limit groove; 42. Limit block; 51. Connecting plate; 52. Pull ring; 61. Anti-rotation groove; 62. Anti-rotation rod; 71. Protective groove; 72. Protective plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figure 1 、 Figure 2 、 Figure 3 as well as Figure 4The utility model provides a technical solution: a wind shield adjustment structure for a plastic film blowing machine, comprising a first wind shield 1, a second wind shield 11 is provided on the outside of the first wind shield 1, a third wind shield 12 is provided on the outside of the second wind shield 11, and an adjusting component is provided on the second wind shield 11 and the third wind shield 12, and the adjusting component comprises a notch 21 respectively provided on the outside of the lower part of the second wind shield 11 and the third wind shield 12, a through hole 22 provided on one side of the notch 21, a movable plate 23 provided in the notch 21, an insert rod 24 fixedly connected to one side of the movable plate 23, a sliding rod 25 fixedly connected to the other side of the movable plate 23, a first spring 26 sleeved on the outside of the sliding rod 25, and a notch 21 respectively provided on the outside of the first wind shield 1 and the second wind shield. A plurality of insertion holes 27 are evenly arranged on one side of the wind ring 11, and a fixing component for improving the stability of use is provided. The insertion rod 24 is plugged into the insertion hole 27, and the sliding rod 25 is slidably connected to the through-hole 22. The third wind protection ring 12 and the second wind protection ring 11 can move vertically and change the height. The movement of the sliding rod 25 can drive the movable plate 23 to move. The two ends of the first spring 26 are fixedly connected to the movable plate 23 and the recess 21 respectively. The movement of the movable plate 23 can deform the first spring 26 and at the same time drive the insertion rod 24 to disengage from the current insertion hole 27, so that the second wind protection ring 11 or the third wind protection ring 12 can be released, and then the second wind protection ring 11 or the third wind protection ring 12 can be moved. The reset of the first spring 26 can drive The insertion rod 24 is inserted into the insertion hole 27, which can stably fix the adjusted second air shielding ring 11 and the third air shielding ring 12 to prevent them from moving. The first air shielding ring 1 and the second air shielding ring 11 are respectively provided with a limiting groove 41 on the side away from the sliding groove 31. The inner walls of the second air shielding ring 11 and the third air shielding ring 12 are respectively fixedly connected with a limiting block 42. The limiting block 42 is slidably connected to the limiting groove 41. The limiting block 42 can slide in the limiting groove 41, and can laterally limit the second air shielding ring 11 and the third air shielding ring 12 to prevent them from lateral displacement. The limiting groove 41 is T-shaped, and the limiting block 42 is T-shaped. The limiting block 42 can be laterally limited and fixed to prevent it from laterally disengaging from the limiting groove 41. The end of the slide bar 25 away from the movable plate 23 is fixedly connected to the connecting plate 51, and a pull ring 52 is fixedly connected to one side of the connecting plate 51. The pull ring 52 can be used to facilitate the movement of the connecting plate 51 and the slide bar 25, and then to facilitate the movement of the insertion rod 24, so as to facilitate the release of the second wind protection ring 11 and the third wind protection ring 12, and to facilitate the adjustment of their height. A protective groove 71 is provided at the bottom of the recess 21, and a protective plate 72 is slidably connected to the protective groove 71. The protective plate 72 is fixedly connected to the movable plate 23, and the movable plate 23 can drive the protective plate 72 to slide in the protective groove 71, and can support the protective plate 72 to prevent the protective plate 72 from tilting, so that the insertion rod 24 can be smoothly inserted into or out of the socket 27.

[0025] See also Figure 1 、 Figure 2 、 Figure 3 as well as Figure 5 The fixing components include a slide groove 31 respectively provided on the outer side of the upper part of the first wind shielding ring 1 and the second wind shielding ring 11, a guide rod 32 provided in the slide groove 31, a second spring 33 fixedly connected to one end of the guide rod 32, a protrusion 34 fixedly connected to the other end of the guide rod 32, and a plurality of hemispherical grooves 35 evenly arranged inside the second wind shielding ring 11 and the third wind shielding ring 12. The guide rod 32 is slidably connected to the slide groove 31. When the second wind shielding ring 11 and the third wind shielding ring 12 move vertically, the protrusion 34 can be driven to disengage from the hemispherical groove 35 and retract into the slide groove 31. The protrusion 34 can make the guide rod 32 squeeze the second wind shielding ring 11 and the third wind shielding ring 12. The second spring 33 deforms it, and the reset of the second spring 33 can push the protrusion 34 to reset it so that it is stuck in the hemispherical groove 35. There are multiple hemispherical grooves 35, which can realize multi-level adjustment of the second wind protection ring 11 and the third wind protection ring 12, and can further improve the use stability of the second wind protection ring 11 and the third wind protection ring 12. A stop groove 61 is provided on one side of the guide rod 32, and a stop rod 62 is fixedly connected to the inner wall of the slide groove 31. The stop rod 62 is slidably connected to the stop groove 61, and the stop rod 62 can slide in the stop groove 61 to prevent the guide rod 32 from rotating, thereby preventing the second spring 33 from rotating and being damaged.

[0026] Working principle: During operation, when the height needs to be adjusted, the pull ring 52 can be pulled, and the movement of the pull ring 52 can drive the connecting plate 51 to move, and the movement of the connecting plate 51 can make the slide bar 25 move, and the movement of the slide bar 25 can make the movable plate 23 move, and the movement of the movable plate 23 can make the first spring 26 deform, and at the same time can drive the insertion rod 24 to disengage from the current insertion hole 27, at this time, the third wind shielding ring 12 or the second wind shielding ring 11 can be moved, and at the same time, the protrusion 34 will be squeezed out of the current hemispherical shape, and the movement of the protrusion 34 can drive the guide rod 32 to move, and the movement of the guide rod 32 can drive the second spring 33 to deform, when the third wind shielding ring 12 or the second wind shielding ring 11 is adjusted to After the appropriate position, the pull ring 52 is released. At this time, the first spring 26 is reset to drive the insertion rod 24 to reset, so that the insertion rod 24 can be inserted into the insertion hole 27, and the third wind shielding ring 12 or the second wind shielding ring 11 can be fixed. At the same time, the second spring 33 is also reset synchronously, which can push the protrusion 34 to reset, so that the protrusion 34 is inserted into the hemispherical groove 35, which can further improve the fixing stability of the third wind shielding ring 12 or the second wind shielding ring 11 and prevent the third wind shielding ring 12 or the second wind shielding ring 11 from shifting. The above is the working process of the entire device, and the contents not described in detail in this manual belong to the existing technology known to professional and technical personnel in this field.

[0027] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind shield adjustment structure for a plastic film blowing machine, comprising a first wind shield (1), characterized in that: A second wind protection ring (11) is provided on the outside of the first wind protection ring (1), a third wind protection ring (12) is provided on the outside of the second wind protection ring (11), and adjustment components are provided on the second wind protection ring (11) and the third wind protection ring (12); The regulating component comprises a notch (21) respectively provided on the outer side of the lower portion of the second wind protection ring (11) and the third wind protection ring (12), a through hole (22) provided on one side of the notch (21), a movable plate (23) provided in the notch (21), an insertion rod (24) fixedly connected to one side of the movable plate (23), a sliding rod (25) fixedly connected to the other side of the movable plate (23), a first spring (26) sleeved on the outer side of the sliding rod (25), a plurality of insertion holes (27) respectively provided on one side of the first wind protection ring (1) and the second wind protection ring (11) and arranged evenly, and a fixing component for improving the stability of use, wherein the insertion rod (24) is plugged into the insertion hole (27), and the sliding rod (25) is slidably connected to the through hole (22).

2. The wind shield adjustment structure for a plastic film blowing machine according to claim 1, characterized in that: The fixing component comprises a sliding groove (31) respectively provided on the outer side of the upper part of the first wind protection ring (1) and the second wind protection ring (11), a guide rod (32) provided in the sliding groove (31), a second spring (33) fixedly connected to one end of the guide rod (32), a protrusion (34) fixedly connected to the other end of the guide rod (32), and a plurality of hemispherical grooves (35) uniformly arranged inside the second wind protection ring (11) and the third wind protection ring (12), wherein the guide rod (32) is slidably connected to the sliding groove (31).

3. The wind shield adjustment structure for a plastic film blowing machine according to claim 1, characterized in that: The first wind protection ring (1) and the second wind protection ring (11) are respectively provided with a limiting groove (41) on one side away from the sliding groove (31); the inner walls of the second wind protection ring (11) and the third wind protection ring (12) are respectively fixedly connected with a limiting block (42); and the limiting block (42) is slidably connected to the limiting groove (41).

4. The wind shield adjustment structure for a plastic film blowing machine according to claim 1, characterized in that: One end of the slide rod (25) away from the movable plate (23) is fixedly connected to a connecting plate (51), and one side of the connecting plate (51) is fixedly connected to a pull ring (52).

5. The wind shield adjustment structure for a plastic film blowing machine according to claim 2, characterized in that: A rotation-stop groove (61) is provided on one side of the guide rod (32), and a rotation-stop rod (62) is fixedly connected to the inner wall of the slide groove (31), and the rotation-stop rod (62) is slidably connected to the rotation-stop groove (61).

6. The wind shield adjustment structure for a plastic film blowing machine according to claim 1, characterized in that: A protection groove (71) is provided at the bottom of the recess (21), a protection plate (72) is slidably connected in the protection groove (71), and the protection plate (72) is fixedly connected to the movable plate (23).

7. The wind shield adjustment structure for a plastic film blowing machine according to claim 3, characterized in that: The limiting groove (41) is in a T-shape, and the limiting block (42) is in a T-shape.

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