A film bubble inside stabilizing device for film blowing

Abstract

The utility model discloses a film bubble inside steady device of film blow moulding relates to blow moulding auxiliary device technical field, including upper fixed ring and lower gas guide ring, the outside fixed connection of upper fixed ring has six groups fixed cylinder pipe, the inside spigot joint of fixed cylinder pipe has extension rod, the fixed connection of extension rod's end has arc guide plate. This film bubble inside steady device of film blow moulding is provided with upper fixed ring, lower gas guide ring, gas pipe, lower fixed plate, air separation cavity, flat blow nozzle, arc guide plate, extension rod and fixed cylinder pipe, when using, the gush of airflow is from lower gas guide ring, enters air separation cavity along gas pipe, and blows to arc guide plate from flat blow nozzle, forms a flat airflow partition between arc guide plate and film bubble inside, realizes the function that airflow partition steady inside, solves the problem that the device does not have the function that airflow partition steady inside.

Description

Technical Field

[0001] This utility model relates to the technical field of blow molding auxiliary devices, specifically a device for stabilizing the inner side of a film bubble in film blow molding. Background Technology

[0002] In the film blow molding process, the gel-like material is extruded into a cylindrical film bubble by an extruder and stretched upwards. The inner and outer airflow of the film bubble expands and cools it. Since the extrusion speed, the air cooling speed of the inner and outer rings, and the amount of air cooling have a significant impact on the diameter of the film bubble, the film bubble is guided and stabilized by a bubble stabilizing device on the outside of the film bubble during its upward stretching path. The inside of the film bubble is inflated by the gas in the inner air ring. However, because the distance between the outer bubble stabilizing device and the extruder outlet is relatively large, the film bubble is suspended and unsupported for a long time. Especially when the diameter of the film bubble increases, the film bubble will swing from side to side or the airflow in the inner air ring will be unstable, causing some areas to sink in. This results in local irregularities in the film bubble formation and affects the film forming effect.

[0003] The current solution is to install an arc-shaped guide rod on the internal air outlet duct. However, the gel-like membrane bubble itself has low strength when extruded. If it is not cooled in time, it is easy to wrinkle when it comes into contact with the guide rod, which affects the overall smoothness of the membrane bubble and does not have the function of stabilizing the inner side of the airflow septum.

[0004] Now, a novel inner stabilizing device for film blown bubbles is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a device for stabilizing the inner side of a blown film bubble, so as to solve the problem mentioned in the background art of not having the function of stabilizing the inner side with an airflow septum.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an inner stabilizing device for a blown film bubble, comprising an upper fixing ring and a lower air guide ring. Six sets of fixing tubes are fixedly connected to the outside of the upper fixing ring. An extension rod is inserted into the inside of each fixing tube. An arc-shaped guide plate is fixedly connected to the end of each extension rod. A lower fixing plate is provided below the extension rod. An air distribution chamber is fixedly connected to the outer side of the lower fixing plate. A flat nozzle is fixedly connected to the top of the air distribution chamber. An air supply pipe is movably connected between the lower air guide ring and the air distribution chamber. Two sets of fixing screw holes are opened at the top of the fixing tubes. Multiple sets of positioning screw holes are opened inside the extension rods. Positioning bolts are inserted into the fixing screw holes. An air inlet pipe is fixedly connected to the rear end of the right side of the lower air guide ring. An air pipe connector is fixedly connected to the right side of the air inlet pipe.

[0007] As a further technical solution of this utility model, the lower air guide ring, air supply pipe, air distribution chamber and flat nozzle are internally connected, and the front and rear ends of the flat nozzle are flush with the front and rear ends of the arc-shaped guide plate.

[0008] As a further technical solution of this utility model, the lower fixing plate and the arc-shaped guide plate are fixedly connected, and the arc-shaped guide plates are arranged at equal intervals.

[0009] As a further technical solution of this utility model, the shape and size of the extension rod outside are adapted to the shape and size of the fixed tube inside, and the extension rod can be pulled along the inside of the fixed tube.

[0010] As a further technical solution of this utility model, the positioning bolt passes through the interior of the positioning screw hole and the fixing screw hole, and the position and size of the positioning screw hole and the fixing screw hole correspond one-to-one.

[0011] As a further technical solution of this utility model, the rear end of the air inlet pipe and the rear end of the lower air guide ring are flush, and the lower air guide ring and the air inlet pipe are internally connected.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the inner stabilizing device of the film blown bubble not only realizes the function of stabilizing the inner side of the airflow septum, but also realizes the function of adjustable support range, and also realizes the function of air intake guidance and balancing air pressure.

[0013] (1) By setting up an upper fixed ring, a lower air guide ring, an air supply pipe, a lower fixed plate, an air distribution chamber, a flat nozzle, an arc-shaped guide plate, an extension rod and a fixed tube, when in use, the upper fixed ring and the lower air guide ring are fixed on the air outlet pipe inside the membrane bubble. The airflow of the fan surges up from the lower air guide ring, enters the air distribution chamber along the air supply pipe, and blows from the flat nozzle to the arc-shaped guide plate, forming a flat airflow septum between the arc-shaped guide plate and the inside of the membrane bubble. While providing support for its interior, it does not contact the membrane bubble and accelerates the cooling of the membrane bubble, thus realizing the function of the airflow septum stabilizing the inside.

[0014] (2) By setting an extension rod, a fixed tube, a positioning screw hole, a fixing screw hole and a positioning bolt, the position of the arc guide plate can be adjusted according to the extruded specifications and the size of the film bubble during use. The positioning bolt can be pulled out, and the extension rod can be pulled and adjusted along the inside of the fixed tube. When adjusted to a suitable position, the positioning bolt is re-driven in. The positioning bolt passes through the positioning screw hole and the fixing screw hole, which can limit the position of the extension rod and realize the function of adjustable support range.

[0015] (3) By setting up a lower air guide ring, an air inlet pipe and an air pipe connector, when in use, the air pipe of the fan is connected to the air pipe connector, and the air inlet enters the lower air guide ring along the air pipe connector and the air inlet pipe. Since the air inlet direction is tangent to the lower air guide ring, the airflow circles along the inside of the lower air guide ring and is discharged from the top air delivery pipe. The air pressure inside each set of air delivery pipes is relatively close, thus realizing the function of air intake guidance and balancing air pressure. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the present invention.

[0017] Figure 2 This is a top view of the upper fixing ring structure of this utility model;

[0018] Figure 3 This is a side view enlarged structural schematic diagram of the air distribution cavity of this utility model;

[0019] Figure 4 This is a top view of a partial cross-sectional structure of the lower air guide ring of this utility model.

[0020] In the diagram: 1. Upper fixing ring; 2. Lower air guide ring; 3. Air supply pipe; 4. Lower fixing plate; 5. Air distribution chamber; 6. Flat nozzle; 7. Arc-shaped guide plate; 8. Extension rod; 9. Fixing tube; 10. Positioning screw hole; 11. Fixing screw hole; 12. Positioning bolt; 13. Air inlet pipe; 14. Air pipe connector. Detailed Implementation

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

[0022] Example: Please refer to Figure 1-4 A device for stabilizing the inner side of a blown film bubble includes an upper fixing ring 1 and a lower air guide ring 2. Six sets of fixing tubes 9 are fixedly connected to the outside of the upper fixing ring 1. An extension rod 8 is inserted into the inside of the fixing tube 9. An arc-shaped guide plate 7 is fixedly connected to the end of the extension rod 8. A lower fixing plate 4 is provided below the extension rod 8. An air distribution chamber 5 is fixedly connected to the outer side of the lower fixing plate 4. A flat nozzle 6 is fixedly connected to the top of the air distribution chamber 5. An air supply pipe 3 is movably connected between the lower air guide ring 2 and the air distribution chamber 5.

[0023] The lower air guide ring 2, air supply pipe 3, air distribution chamber 5, and flat nozzle 6 are internally connected. The front and rear ends of the flat nozzle 6 are flush with the front and rear ends of the arc guide plate 7. The lower fixing plate 4 and the arc guide plate 7 are fixedly connected. The arc guide plates 7 are arranged at equal intervals, which can stably support the inner side of the membrane bubble while achieving contactless operation.

[0024] Specifically, such as Figure 1 , Figure 2 and Figure 3 As shown, the airflow surges upward from the lower air guide ring 2, enters the air distribution chamber 5 along the air delivery pipe 3, and blows towards the arc-shaped guide plate 7 from the flat nozzle 6. A flat airflow barrier is formed between the arc-shaped guide plate 7 and the inner side of the membrane bubble, which provides support to the inside of the membrane bubble without contacting it, and at the same time accelerates the cooling of the membrane bubble.

[0025] The top of the fixed tube 9 has two sets of fixing screw holes 11, and the inside of the extension rod 8 has multiple sets of positioning screw holes 10. Positioning bolts 12 are inserted into the inside of the fixing screw holes 11. The external shape and size of the extension rod 8 are compatible with the internal shape and size of the fixed tube 9. The extension rod 8 can be pulled along the inside of the fixed tube 9. The positioning bolts 12 pass through the inside of the positioning screw holes 10 and the fixing screw holes 11. The position and size of the positioning screw holes 10 and the fixing screw holes 11 correspond one-to-one, and the support range can be adjusted.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, by pulling out the positioning bolt 12, the extension rod 8 can be moved and adjusted along the inside of the fixed tube 9. Once adjusted to the appropriate position, the positioning bolt 12 is driven in again. The positioning bolt 12 passes through the positioning screw hole 10 and the fixing screw hole 11, thus defining the position of the extension rod 8.

[0027] An air inlet pipe 13 is fixedly connected to the rear end of the right side of the lower air guide ring 2. An air pipe connector 14 is fixedly connected to the right side of the air inlet pipe 13. The rear end of the air inlet pipe 13 is flush with the rear end of the lower air guide ring 2. The lower air guide ring 2 and the air inlet pipe 13 are internally connected, which can guide the air in and evenly distribute the internal air pressure.

[0028] Specifically, such as Figure 1 and Figure 4 As shown, the air enters the lower air guide ring 2 through the air pipe joint 14 and the air inlet pipe 13. Since the air intake direction is tangent to the lower air guide ring 2, the airflow circles inside the lower air guide ring 2 and is discharged from the top air delivery pipe 3. The air pressure inside each set of air delivery pipes 3 is relatively close.

[0029] Working Principle: In use, the upper fixing ring 1 and the lower air guide ring 2 are fixed to the air outlet pipe inside the membrane bubble. The airflow from the fan rises from the lower air guide ring 2, enters the air distribution chamber 5 along the air delivery pipe 3, and is blown from the flat nozzle 6 onto the arc-shaped guide plate 7. A flat airflow barrier is formed between the arc-shaped guide plate 7 and the inside of the membrane bubble, providing support to its interior without contacting the membrane bubble, while simultaneously accelerating the cooling of the membrane bubble. The position of the arc-shaped guide plate 7 can be adjusted according to the extruded specifications and membrane bubble size. The positioning bolt 12 can be pulled out, and the extension rod 8 can be moved and adjusted along the inside of the fixed tube 9. Once adjusted to the appropriate position, the positioning bolt 12 is reinserted. The positioning bolt 12 passes through the positioning screw hole 10 and the fixing screw hole 11, thus defining the position of the extension rod 8. The fan's air pipe is connected to the air pipe connector 14. The air intake enters the lower air guide ring 2 along the air pipe connector 14 and the air intake pipe 13. Since the air intake direction is tangent to the lower air guide ring 2, the airflow circles along the inside of the lower air guide ring 2 and is discharged from the top air delivery pipe 3. The air pressure inside each set of air delivery pipes 3 is relatively close.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A device for stabilizing the inner side of a blown film bubble, comprising an upper fixing ring (1) and a lower air guide ring (2), characterized in that: The upper fixed ring (1) is externally fixedly connected to six sets of fixed tubes (9). An extension rod (8) is inserted inside the fixed tube (9). An arc-shaped guide plate (7) is fixedly connected to the end of the extension rod (8). A lower fixed plate (4) is provided below the extension rod (8). An air distribution chamber (5) is fixedly connected to the outer side of the lower fixed plate (4). A flat nozzle (6) is fixedly connected to the top of the air distribution chamber (5). An air supply pipe (3) is movably connected between the lower air guide ring (2) and the air distribution chamber (5). Two sets of fixed screw holes (11) are opened at the top of the fixed tube (9). Multiple sets of positioning screw holes (10) are opened inside the extension rod (8). Positioning bolts (12) are inserted inside the fixed screw holes (11). An air inlet pipe (13) is fixedly connected to the rear end of the right side of the lower air guide ring (2). An air pipe connector (14) is fixedly connected to the right side of the air inlet pipe (13).

2. The inner stabilizing device for a blown film bubble according to claim 1, characterized in that: The lower air guide ring (2), air supply pipe (3), air distribution chamber (5), and flat nozzle (6) are internally connected, and the front and rear ends of the flat nozzle (6) are flush with the front and rear ends of the arc-shaped guide plate (7).

3. The inner stabilizing device for a blown film bubble according to claim 1, characterized in that: The lower fixing plate (4) and the arc-shaped guide plate (7) are fixedly connected, and the arc-shaped guide plate (7) is arranged at equal intervals.

4. The inner stabilizing device for a blown film bubble according to claim 1, characterized in that: The external shape and size of the extension rod (8) are adapted to the internal shape and size of the fixed tube (9), and the extension rod (8) can be pulled along the inside of the fixed tube (9).

5. The inner stabilizing device for a blown film bubble according to claim 1, characterized in that: The positioning bolt (12) passes through the interior of the positioning screw hole (10) and the fixing screw hole (11), and the position dimensions of the positioning screw hole (10) and the fixing screw hole (11) correspond one-to-one.

6. The inner stabilizing device for a blown film bubble according to claim 1, characterized in that: The rear end of the air inlet pipe (13) is flush with the rear end of the lower air guide ring (2), and the interiors of the lower air guide ring (2) and the air inlet pipe (13) are connected.

Images