Air inlet rate adjusting assembly of degradable environment-friendly plastic packaging bag film blowing machine

Abstract

The utility model discloses a degradable environment-friendly plastic packaging bag film blowing machine air inlet amount adjusting assembly, which belongs to the technical field of plastic packaging bag processing equipment and comprises a film blowing machine body, and a feeding end head at the lower end of the film blowing machine body is externally connected with an extrusion pipeline. A clamping mold is arranged at the upper end of the film blowing machine body, a mold head is installed in the clamping mold, an annular material film outlet is formed between the mold head and the mold, an air ring is installed in the middle of the mold head in an embedded mode, a plurality of annular surrounding air holes are formed in the air outlet face of the air ring, and the air holes are communicated with the mold head. A vertical shaft is arranged in the center of the air outlet face of the air ring, and a rotating ring is sleeved on the vertical shaft. According to the air inlet volume adjusting assembly, on one hand, the air outlet volume of the air ring can be adjusted to meet the processing requirements of degradable environment-friendly plastic packaging bag raw materials, and on the other hand, the uniformity of the adjusted air outlet volume can be guaranteed, and the phenomenon of film blowing deflection is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic packaging bag processing equipment, and more particularly to an air inlet volume regulating component of a degradable and environmentally friendly plastic packaging bag film blowing machine. Background Art

[0002] The raw materials for existing degradable and environmentally friendly plastic packaging bags are generally synthesized from polyvinyl alcohol, starch and photosensitizer. Polyvinyl alcohol is easier to degrade than polyethylene. The added photosensitizer can accelerate the degradation of plastic by absorbing sunlight, and starch can promote the biodegradation rate of plastic in the soil. Secondly, in order to improve the degradation effect, the plastic packaging bags need to be subjected to multi-layer blown film composite operations, that is, the materials are mixed and discharged through multiple discharge points of the diverter on the die head, and different blowing air volumes are combined to realize the processing of multi-layer composite films.

[0003] In the actual film blowing process, the existing film blowing machine die head generally discharges air through an air ring, and the size of the air holes on the air outlet surface is fixed. The air intake volume is difficult to adjust according to the film blowing requirements of the biodegradable and environmentally friendly plastic packaging bag raw materials. Secondly, the adjusted air volume also needs to ensure the uniformity of the air intake. If the air outlet volume is uneven, it is easy to cause the film to be skewed, affecting the processing quality of the finished packaging bag. Utility Model Content

[0004] The purpose of this utility model is to provide an air inlet volume adjustment component for a degradable and environmentally friendly plastic packaging bag film blowing machine. On the one hand, the air inlet volume adjustment component can adjust the air outlet volume of the air ring to adapt to the processing requirements of the raw materials of degradable and environmentally friendly plastic packaging bags, and at the same time ensure the uniformity of the adjusted air outlet volume and reduce the phenomenon of film blowing deflection.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A film blowing machine for degradable and environmentally friendly plastic packaging bags has an air inlet regulating component, comprising a film blowing machine body, a feed end at the lower end of the film blowing machine body connected to an extrusion pipe, a clamping mold provided at the upper end of the film blowing machine body, a die head installed inside the clamping mold, a ring-shaped film outlet formed between the die head and the mold, an air ring embedded and installed at the middle position of the die head, a plurality of annular air holes provided on the air outlet surface of the air ring, a vertical shaft provided at the center position of the air outlet surface of the air ring, a swivel mounted on the vertical shaft, a horizontal bracket provided at the center position between the swivels, and the middle position of the bracket mounted on the vertical shaft, a fixing ring welded and fixed to the die head surface outside the swivel, a plurality of surrounding screws provided between the swivel and the fixing ring, a nut screwed into the screw to fix the relative position of the swivel and the fixing ring, and an air inlet regulating disk welded and fixed under the bracket.

[0007] As a further optimization of this solution, the air inlet volume adjustment plate is embedded above the air outlet surface of the air ring and through holes with the same size as the air holes are opened on the surface of the air inlet volume adjustment plate and at positions corresponding to the air holes of the air ring.

[0008] As a further optimization of this solution, the die head surface is provided with an annular clamping strip, the annular frame is clamped on the clamping strip, the outer periphery of the annular frame is provided with several connecting plates surrounding it, the annular frame is fixed to the die head surface by screws passing through the connecting plates, the upper edge of the annular frame is provided with a vertical uniform air grille and a gas uniform distribution plate is installed above the vertical uniform air grille, a rotating bearing seat is installed at the center of the gas uniform distribution plate, and the rotating part below the rotating bearing seat is rotatably connected to the uniform air fan.

[0009] As a further optimization of this solution, the surface of the gas distribution plate is processed with a plurality of air outlet holes of the same shape and equidistantly spaced.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] In the utility model, an air inlet volume regulating disk structure is provided and embedded above the air outlet surface of the air ring. By adjusting the rotation angle of the air inlet volume regulating disk and fixing the position of the rotating ring by a nut, the relative position of the through-holes on the surface of the air inlet volume regulating disk and the air holes of the air ring is changed, thereby changing the air outlet volume. The air outlet volume can be reasonably adjusted according to the processing requirements of different biodegradable and environmentally friendly plastic packaging bag raw materials.

[0012] The utility model provides a vertical air uniformity grille and an air uniform distribution plate, combined with an internal air uniformity fan, to uniformly distribute the air blown out of each air hole of the air ring, so that the air flows out evenly from the vertical air uniformity grilles on all sides and the air outlet holes of the upper air uniform distribution plate, and the distribution is more uniform, thereby reducing the phenomenon of film blowing deviation and ensuring the processing quality of the finished packaging bags. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the installation structure of the smoke treatment device of the utility model (hollowed out part of the flexible bag area);

[0014] Figure 2 This is a schematic diagram of the side structure of the inverted concave frame of the utility model;

[0015] Figure 3 This is a schematic diagram of the upper structure of the inverted concave frame of the utility model (hollowed-out flexible bagging area);

[0016] In the figure: 1. Film blowing machine; 2. Extrusion pipe; 3. Feed end; 4. Mold; 5. Die head; 6. Ring frame; 7. Connecting plate; 8. Screw; 9. Vertical air distribution grille; 10. Gas distribution plate; 11. Rotating bearing seat; 12. Air distribution fan; 13. Clip; 14. Fixing ring; 15. Swivel; 16. Screw; 17. Nut; 18. Bracket; 19. Air intake adjustment dial; 20. Vertical shaft; 21. Through hole; 22. Air hole. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects of the utility model easier to understand, the utility model is further explained below with reference to specific illustrations.

[0018] In order to solve the problem that the air hole size of the existing film blowing machine is fixed and the air intake volume is difficult to adjust according to the film blowing demand of biodegradable and environmentally friendly plastic packaging bag raw materials, Figure 1 As shown, the present application includes a film blowing machine body 1, a feed end at the lower end of the film blowing machine body 1 is externally connected to an extrusion pipe 2, a clamping mold 4 is provided at the upper end of the film blowing machine body 1, and a die head 5 is installed inside the clamping mold 4, and an annular film outlet is formed between the die head 5 and the mold 4;

[0019] like Figure 3 As shown, an air ring is embedded and installed in the middle position of the die head 5, and a plurality of annular air holes 22 are provided on the air outlet surface of the air ring. A vertical shaft 20 is provided at the center position of the air outlet surface of the air ring, and a swivel 15 is sleeved on the vertical shaft 20. A horizontal bracket 18 is provided at the center position between the swivels 15, and the middle position of the bracket 18 is sleeved on the vertical shaft 20. A fixed ring 14 is welded and fixed to the surface of the die head 5 outside the swivel 15, and a plurality of surrounding screws 16 are provided between the swivel 15 and the fixed ring 14. Nuts 17 are screwed into the screws 16 to fix the relative position of the swivel 15 and the fixed ring 14. An air inlet adjustment disk 19 is welded and fixed below the bracket 18. The air inlet adjustment disk 19 is embedded above the air outlet surface of the air ring, and through holes 21 of the same size as the air holes 22 are opened on the surface of the air inlet adjustment disk 19 at positions corresponding to each air hole 22 of the air ring.

[0020] Specifically, by adjusting the rotation angle of the air inlet adjustment disk 19 and fixing the position of the rotating ring 15 by the nut 17, the relative position of the through hole 21 on the surface of the air inlet adjustment disk 19 and the air holes 22 of the air ring is changed, thereby changing the size of the air outflowing from the air holes 22. It can be reasonably adjusted according to the different processing requirements of the biodegradable and environmentally friendly plastic packaging bag raw materials.

[0021] In order to solve the problem of uneven air flow, which easily leads to film deflection and affects the processing quality of finished packaging bags, such as Figure 2As shown, the surface of the die head 5 of the present application is provided with an annular clamping strip 13, and the annular frame 6 is clamped on the clamping strip 13. The outer periphery of the annular frame 6 is provided with a number of connecting plates 7 surrounding it. The annular frame 6 is fixed to the surface of the die head 5 by screws 8 passing through the connecting plates 7. A vertical uniform air grille 9 is provided on the upper edge of the annular frame 6, and a gas uniform distribution plate 10 is installed above the vertical uniform air grille 9. A rotating bearing seat 11 is installed at the center of the gas uniform distribution plate 10, and a rotating part below the rotating bearing seat 11 is rotatably connected to a uniform air fan 12. The surface of the gas uniform distribution plate 10 is processed with a number of air outlet holes of the same shape and equidistantly spaced.

[0022] Specifically, by setting up a vertical uniform air grille 9 and an air uniform distribution plate 10, combined with an internal uniform air fan 12, the air blown out of each air hole 22 of the air ring is uniformed, so that the air flows out evenly from the vertical uniform air grille 9 on all sides and the air outlet holes of the upper air uniform distribution plate 10, and the distribution is more even, thereby reducing the phenomenon of film blowing deviation and ensuring the processing quality of the finished packaging bags.

[0023] The standard parts used in this utility model can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.

[0024] The above shows and describes the basic principles and main features of the present invention, as well as the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. An air inlet volume adjustment assembly for a film blowing machine for biodegradable and environmentally friendly plastic packaging bags, comprising a film blowing machine body, a feed end at the lower end of the film blowing machine body connected to an extrusion pipe, a clamping mold at the upper end of the film blowing machine body, a die head installed inside the clamping mold, an annular film outlet formed between the die head and the mold, an air ring embedded in the middle of the die head, and a plurality of annular air holes on the air outlet surface of the air ring, characterized in that: A vertical shaft is provided at the center position of the air outlet surface of the air ring, a swivel is mounted on the vertical shaft, a horizontal bracket is provided at the center position between the swivels, and the middle position of the bracket is mounted on the vertical shaft, a fixed ring is welded and fixed to the die head surface outside the swivel, a number of surrounding screws are provided between the swivel and the fixed ring, nuts are screwed into the screws to fix the relative position of the swivel and the fixed ring, and an air intake adjustment disk is welded and fixed under the bracket.

2. The air inlet volume regulating assembly of the film blowing machine for biodegradable and environmentally friendly plastic packaging bags according to claim 1, characterized in that: The air inlet volume regulating plate is embedded above the air outlet surface of the air ring, and through holes with the same size as the air holes are opened at positions corresponding to the air holes on the surface of the air inlet volume regulating plate and each air hole of the air ring.

3. The air inlet volume regulating assembly of the film blowing machine for biodegradable and environmentally friendly plastic packaging bags according to claim 2, characterized in that: The die head surface is provided with an annular clamping strip, the annular frame is clamped on the clamping strip, the outer periphery of the annular frame is provided with several connecting plates surrounding it, the annular frame is fixed to the die head surface by screws passing through the connecting plates, the upper edge of the annular frame is provided with a vertical uniform air grille and a gas uniform distribution plate is installed above the vertical uniform air grille, a rotating bearing seat is installed at the center of the gas uniform distribution plate, and the rotating part below the rotating bearing seat is rotatably connected to the uniform air fan.

4. The air inlet volume regulating assembly of the film blowing machine for biodegradable and environmentally friendly plastic packaging bags according to claim 3 is characterized by: The surface of the gas distribution plate is processed with a plurality of air outlet holes of the same shape and equidistant intervals.

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