An anti-tipping PE blow-molded bottle and its blow molding die

Abstract

This utility model discloses an anti-tipping PE blow-molded bottle and its blow molding mold, relating to the field of blow molding molds. It aims to solve the problem of occasional impurities or material residues appearing in the mold cavity, which, if not cleaned in time, will affect the quality of PE blow-molded bottle molding. The key technical points are: it includes a mounting frame, with guide rods fixed between the mounting frames. This utility model uses the opening and closing of the mold to move a hinge rod connected to it. When the mold approaches, the hinge rod deflects upwards, thereby pushing the sealing plate upwards through the connecting seat and connecting rod to draw gas into the air cylinder. Simultaneously, it moves the double-headed air nozzles above the mold. When the mold opens, the hinge rod deflects downwards, thereby pulling the connecting seat and connecting rod downwards. The sealing plate then sends the gas from the air cylinder into the telescopic air pipe, which sprays the gas into the molding cavity through the air nozzles. Simultaneously, the double-headed air nozzles move downwards during air spraying, thereby blowing out any occasional impurities or residues in the molding cavity, improving the quality of PE blow-molded bottle molding.

Description

Technical Field

[0001] This utility model relates to the field of blow molding molds, and more specifically, it relates to an anti-tipping PE blow-molded bottle and its blow molding mold. Background Technology

[0002] PE blow-molded bottles, also known as polyethylene blow-molded bottles, are a type of plastic container widely used in daily life and industrial fields, such as bottled water, detergents, oils, chemicals, and pharmaceuticals. PE blow-molded bottles have good toughness and chemical corrosion resistance, are lightweight, impact-resistant, easy to carry and transport, and have excellent insulation properties, making them suitable for storing various liquids. The blow molding mold is the core component in the manufacture of PE blow-molded bottles, and its design directly affects the appearance, structure, and quality of the bottle.

[0003] For example, Chinese Patent Publication No. CN218286672U discloses a blow molding die for PET plastic bottles, relating to the field of blow molding technology. This utility model includes two fixed outer shells, two half-mold cores, and a sealing ring. The two half-mold cores are evenly arranged inside the two fixed outer shells, and each half-mold core has a half-mold cavity in the middle of an adjacent side. The two half-mold cores and the two half-mold cavities combine to form a blow molding die. Two fixing blocks are symmetrically fixed to the inner walls of the bottom ends of the two fixed outer shells about their vertical center lines. Two fixing grooves are symmetrically opened in the middle of the bottom ends of the two half-mold cores about their vertical center lines, and the fixing blocks are movably engaged within the fixing grooves. This utility model uses the fixing blocks and fixing grooves to fix the half-mold cores inside the fixed outer shells, using an insertion fixing method instead of bolt fixing. Therefore, when changing to different molds or producing plastic bottles of different shapes, this blow molding die for PET plastic bottles does not require disassembling bolts, increasing changeover efficiency.

[0004] In the blow molding mold disclosed in the above technical solution, after a PE blow molded bottle is formed in the half mold cavity, impurities or material residues may occasionally appear. If the next PE blow molded bottle is not cleaned and the process is carried out directly, the quality of the PE blow molded bottle will be affected.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide an anti-tipping PE blow-molded bottle and its blow molding mold, which uses a residue removal component to blow out any impurities or residues that may occasionally exist in the molding cavity, thereby improving the quality of PE blow-molded bottle molding.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a blow molding die, comprising:

[0008] Mounting brackets, with guide rods fixed between the mounting brackets, and two molds sliding on the guide rods;

[0009] The residue removal component is located inside the mounting frame. The residue removal component includes an air cylinder fixed on the mounting frame. An air inlet check valve is provided on the outer surface of the air cylinder. A sealing plate is provided on the inner side of the air cylinder. An air outlet check valve is provided at the bottom of the inner wall of the air cylinder. A drive component and a telescopic jet component are provided at the bottom of the air cylinder.

[0010] By adopting the above technical solution, the opening and closing of the mold drives the hinge rod and the end connected to it to move with it. When the mold approaches, the hinge rod deflects upward, thereby pushing the sealing plate upward through the connecting seat and the connecting rod to draw gas into the air cylinder. At the same time, it drives the double-headed jet nozzle to move above the mold. When the mold opens, the hinge rod deflects downward, thereby pulling the connecting seat and the connecting rod downward. Then, the sealing plate sends the gas in the air cylinder into the telescopic air pipe and sprays it into the molding cavity through the jet nozzle. At the same time, the double-headed jet nozzle moves downward when spraying, thereby blowing out any impurities or residues that may exist in the molding cavity, thus improving the quality of PE blow-molded bottle molding.

[0011] The present invention is further configured such that: the driving component includes two hinge rods that rotate on one side of the mold and two connecting rods fixed to the bottom of the sealing plate, one end of each of the two connecting rods extends to the bottom of the air cylinder, one end of each of the two connecting rods is fixed with a connecting seat, and one end of each of the two hinge rods rotates on the connecting seat.

[0012] The present invention is further configured such that: the telescopic jet component includes a telescopic air pipe fixed to the bottom of the air cylinder and a double-headed jet nozzle fixed to the bottom of the connecting seat; one end of the telescopic air pipe extends into the interior of the air cylinder and is connected to the one-way valve for air outlet; the other end of the telescopic air pipe extends to the bottom of the connecting seat and is connected to one end of the double-headed jet nozzle.

[0013] The present invention is further configured such that a molding cavity is provided on one side of the mold.

[0014] An anti-tipping PE blow-molded bottle includes a PE blow-molded bottle extruded by the mold, the PE blow-molded bottle being composed of a bottle mouth, a cylindrical bottle body, a polygonal bottle body, and an annular thickened base.

[0015] The present invention is further configured such that the cross-section of the polygonal bottle body is a hexagonal structure.

[0016] In summary, this utility model has the following beneficial effects:

[0017] The opening and closing of the mold causes the hinge rod to move along with one end connected to it. When the mold approaches, the hinge rod deflects upward, thereby pushing the sealing plate upward through the connecting seat and connecting rod to draw gas into the air cylinder. At the same time, it moves the double-headed jet nozzle above the mold. When the mold opens, the hinge rod deflects downward, thereby pulling the connecting seat and connecting rod downward. Then, the sealing plate sends the gas in the air cylinder into the telescopic air pipe and sprays it into the molding cavity through the jet nozzle. At the same time, the double-headed jet nozzle moves downward during the spraying, thereby blowing out any impurities or residues that may exist in the molding cavity, improving the quality of PE blow-molded bottle molding. Attached Figure Description

[0018] Figure 1 This is a perspective view of this embodiment;

[0019] Figure 2 This is a cross-sectional view of this embodiment;

[0020] Figure 3 This is a bottom view of the residue removal component in this embodiment;

[0021] Figure 4 This is a schematic diagram of the PE blow-molded bottle in this embodiment;

[0022] Figure 5 for Figure 4 A sectional view.

[0023] Figure descriptions: 1. Mounting frame; 2. Guide rod; 3. Mold; 4. Residue removal component; 41. Air cylinder; 42. Inlet one-way valve; 43. Sealing plate; 44. Outlet one-way valve; 45. Hinge rod; 46. Connecting rod; 47. Connecting seat; 48. Telescopic air pipe; 49. Double-headed air nozzle; 5. Molding cavity; 6. PE blow-molded bottle; 61. Bottle neck; 62. Cylindrical bottle body; 63. Polygonal bottle body; 64. Annular thickened base. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0026] like Figure 1-5As shown, a blow molding die includes a mounting frame 1 and a residue removal component 4 disposed inside the mounting frame 1. Four guide rods 2 are fixed between the mounting frames 1, and two molds 3 slide between the four guide rods 2. Each mold 3 has a molding cavity 5 on its opposite side. The residue removal component 4 includes an air cylinder 41 fixed to the mounting frame 1. The top of the air cylinder 41 has an opening, and at least four one-way valves 42 arranged in a ring are disposed on the outer surface of the air cylinder 41. The one-way valves 42 are located near the lower edge of the air cylinder 41. A rubber sealing plate 43 slides on the inner side of the air cylinder 41. An exhaust one-way valve 44 is disposed at the bottom of the inner wall of the air cylinder 41. Two symmetrical driving members and at least two telescopic jet members are disposed at the bottom of the air cylinder 41. The number of exhaust one-way valves 44 is the same as the number of telescopic jet members.

[0027] The driving component includes two hinge rods 45 that rotate on one side of the mold 3 and two connecting rods 46 fixed to the bottom of the sealing plate 43. One end of each connecting rod 46 extends to the bottom of the air cylinder 41, and one end of each connecting rod 46 is fixed to a connecting seat 47. One end of each hinge rod 45 rotates on the connecting seat 47. The hinge rods 45 deflect as the mold 3 moves, thereby indirectly driving the sealing plate 43 to rise and fall in the air cylinder 41 by the movement of the mold 3.

[0028] The telescopic jet component includes a telescopic air pipe 48 fixed to the bottom of the air cylinder 41 and a double-headed jet nozzle 49 fixed to the bottom of the connecting seat 47. The two jet ports of the double-headed jet nozzle 49 are respectively facing the two molded inner cavities 5. One end of the telescopic air pipe 48 extends into the interior of the air cylinder 41 and is connected to the one-way valve 44. The other end of the telescopic air pipe 48 extends to the bottom of the connecting seat 47 and is connected to one end of the double-headed jet nozzle 49.

[0029] When the two molds 3 approach each other, one end of the hinge rod 45 connected to them will move with them. During the movement, the hinge rod 45 will deflect upwards, causing the connecting seat 47 to move upwards. The connecting seat 47 will push the sealing plate 43 upwards in the air cylinder 41 through the connecting rod 46. At this time, the one-way valve 42 will open, and gas will be drawn into the air cylinder 41 for storage. At the same time, the connecting seat 47 will move the double-headed jet nozzle 49 upwards to above the mold 3 and cause the telescopic air pipe 48 to retract, preventing the double-headed jet nozzle 49 and the telescopic air pipe 48 from obstructing the closing of the mold 3. PE blow molding will then begin in the mold 3. After the bottle 6 is formed, the two molds 3 open. At this time, the mold 3 will drive the hinge rod 45 to move to one end connected to it, and deflect downward during the movement. The deflection of the hinge rod 45 will pull the connecting seat 47 down. The connecting seat 47 will pull the sealing plate 43 down through the connecting rod 46. The gas in the air cylinder 41 will enter the telescopic air pipe 48 through the one-way valve 44 and be sprayed into the molding cavity 5 through the double-headed air nozzle 49. At the same time, the double-headed air nozzle 49 will move down through the pull of the connecting seat 47 when spraying air, thereby blowing out any impurities or residues that may exist in the molding cavity 5, and improving the molding quality of the PE blow-molded bottle 6.

[0030] An anti-tipping PE blow-molded bottle includes a PE blow-molded bottle 6 extruded from a mold 3. The PE blow-molded bottle 6 consists of a bottle mouth 61, a cylindrical bottle body 62, a polygonal bottle body 63, and an annular thickened base 64. The polygonal bottle body 63 has a hexagonal cross-section and six planar sides. The bottle mouth 61 is used for filling and pouring the contents. The thickness of the annular thickened base 64 is greater than the thickness of the bottle mouth 61, the cylindrical bottle body 62, and the polygonal bottle body 63 to increase the weight of the base and increase the stability of the PE blow-molded bottle 6 when it is upright. The polygonal bottle body 63 and the annular thickened base 64 can achieve double anti-tipping. When the PE blow-molded bottle 6 is tilted, the body of the polygonal bottle body 63 will support the PE blow-molded bottle 6 and prevent the PE blow-molded bottle 6 from rolling and falling, thus preventing the PE blow-molded bottle 6 from tipping over. Since the overall design of the PE blow-molded bottle 6 has the center of gravity at the bottom, a slight tilt will cause the PE blow-molded bottle 6 to straighten.

[0031] The specific embodiments are merely explanations of this utility model and are not intended to limit it. After reading this specification, those skilled in the art can make modifications to these embodiments without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this utility model.

Claims

1. A blow molding die, characterized in that, include: Mounting bracket (1), with guide rods (2) fixed between the mounting brackets (1), and two molds (3) sliding on the guide rods (2); The residue removal component (4) is located inside the mounting frame (1). The residue removal component (4) includes an air cylinder (41) fixed on the mounting frame (1). An air inlet check valve (42) is provided on the outer surface of the air cylinder (41). A sealing plate (43) is provided on the inner side of the air cylinder (41). An air outlet check valve (44) is provided at the bottom of the inner wall of the air cylinder (41). A drive component and a telescopic jet component are provided at the bottom of the air cylinder (41).

2. The blow molding die according to claim 1, characterized in that: The driving component includes two hinge rods (45) that rotate on one side of the mold (3) and two connecting rods (46) fixed to the bottom of the sealing plate (43). One end of each of the two connecting rods (46) extends to the bottom of the air cylinder (41), and one end of each of the two connecting rods (46) is fixed with a connecting seat (47). One end of each of the two hinge rods (45) rotates on the connecting seat (47).

3. The blow molding die according to claim 2, characterized in that: The telescopic jet component includes a telescopic air pipe (48) fixed to the bottom of the air cylinder (41) and a double-headed jet nozzle (49) fixed to the bottom of the connecting seat (47). One end of the telescopic air pipe (48) extends into the interior of the air cylinder (41) and is connected to the one-way valve (44) for air output. The other end of the telescopic air pipe (48) extends to the bottom of the connecting seat (47) and is connected to one end of the double-headed jet nozzle (49).

4. The blow molding die according to claim 1, characterized in that: The mold (3) has a molding cavity (5) on one side.

5. A tipping-proof PE blow-molded bottle, characterized in that, The PE blow-molded bottle (6) is extruded from the mold (3) described in claim 1. The PE blow-molded bottle (6) is composed of a bottle mouth (61), a cylindrical bottle body (62), a polygonal bottle body (63), and an annular thickened base (64).

6. The anti-tipping PE blow-molded bottle according to claim 5, characterized in that: The cross-section of the polygonal bottle body (63) is hexagonal.

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