Plastic film blowing machine

Abstract

The utility model discloses a plastic film blowing machine which comprises a base, a heating cover is fixed above the base, a spiral conveyor is installed inside the heating cover, a heating pipe is installed on the outer side of the spiral conveyor, a feeding mechanism is installed above the heating cover, and a discharging pipe is fixed at one end of the spiral conveyor. According to the plastic film blowing machine, through cooperative use of the cooling mechanism, in the plastic film forming process, film bubbles are blown up and cooled through the air openings, and the first cooling ring and the second cooling ring are arranged to be in a detachable mode; in this way, the first cooling ring and the second cooling ring can be disassembled and assembled under the condition that a film blowing die head is not affected, the first cooling ring and the second cooling ring can be assembled only by enabling the buckles and the clamping grooves to correspond to each other and disassembling the buckles and the clamping grooves into the positioning rods, and a plurality of air openings are evenly distributed in the first cooling ring and the second cooling ring. Therefore, cold air is uniformly blown to the film bubbles, and the forming quality is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of blown film machines, specifically a plastic film blown film machine. Background Technology

[0002] Plastic film is a thin film made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins. It is used for packaging and as a coating layer. Plastic packaging and plastic packaging products are taking up an increasingly larger share of the market, especially composite plastic flexible packaging, which is widely used in food, medicine, chemical and other fields. A plastic film blowing machine is a device that heats and melts plastic particles and then blows them into a film. There are many types of blowing machines, among which PE and POF are more common. Different types of blowing machines may differ in terms of production efficiency, film quality and applicable scope.

[0003] Existing blown film machines require cooling of the plastic film during operation, necessitating the installation of a cooling ring. This cooling ring is fitted onto the outside of the die head, making disassembly and assembly inconvenient. Therefore, this application provides a plastic film blown film machine to meet this requirement. Utility Model Content

[0004] The purpose of this invention is to provide a plastic film blowing machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a plastic film blowing machine, comprising a base, a heating cover fixed above the base, a screw conveyor installed inside the heating cover, a heating pipe installed outside the screw conveyor, a feeding mechanism installed above the heating cover, a discharge pipe fixed at one end of the screw conveyor, a blowing die head fixed on one side of the discharge pipe, a cooling mechanism provided outside the blowing die head, a bracket fixed on one side of the base, a traction roller installed above the bracket, and an A-frame installed below the traction roller;

[0006] The cooling mechanism includes a fixed base, bolts, a support plate, a first cooling ring, a buckle, a second cooling ring, a slot, a positioning rod, an air vent, a cooler, and a connecting pipe. The fixed base is fixed to both sides of the blown film die head. Bolts are provided on both sides of the fixed base. A support plate is installed above the fixed base. A first cooling ring is fixed to one side of the support plate. A buckle is fixed to one side of the first cooling ring. A second cooling ring is provided to one side of the first cooling ring. A slot is opened on one side of the second cooling ring. Positioning rods are installed on both sides of the second cooling ring. Air vents are installed inside both the first and second cooling rings. Coolers are provided on both sides above the base. A connecting pipe is installed above the coolers.

[0007] Preferably, the feeding mechanism includes a feeding hopper, a fixed rod, a motor, a transmission rod, and a rotating frame. The feeding hopper is fixed above the heating cover, a fixed rod is fixed to one side of the feeding hopper, a motor is installed above the fixed rod, a transmission rod is installed below the motor, and a rotating frame is fixed below the transmission rod.

[0008] Preferably, the rotating frame forms a rotating structure with the feed hopper via a transmission rod, and the rotating frame is symmetrical about the transmission rod as the central axis.

[0009] Preferably, the first cooling ring is engaged with the second cooling ring by a snap-fit, and the first cooling ring and the second cooling ring are of the same size.

[0010] Preferably, the connecting pipes are installed on one side of the first cooling ring and the second cooling ring respectively, and the number of air vents on the inner side of the first cooling ring and the second cooling ring is the same.

[0011] Preferably, a winding frame is fixed to the lower side of one side of the bracket, and a winding roller is installed inside the winding frame.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This plastic film blowing machine, in conjunction with a cooling mechanism, inflates and cools the film bubble through air vents during the plastic film forming process. The first and second cooling rings are designed to be detachable, allowing for assembly and disassembly without affecting the blowing die. Assembly of the first and second cooling rings can be completed simply by aligning the clips with the slots and inserting the positioning rod. Furthermore, multiple air vents are evenly distributed inside the first and second cooling rings, ensuring that cold air is evenly blown onto the film bubble, thus improving the forming quality.

[0014] 2. This plastic film blowing machine, through the setting of the feeding mechanism, pours plastic particles into the inside of the feeding hopper during feeding. At the same time, the rotating frame driven by the motor can be rotated to stir the plastic particles inside the feeding hopper, reducing the risk of plastic particles clogging at the feeding hopper. This helps to maintain the smooth operation of the blowing machine. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the screw conveyor of this utility model;

[0017] Figure 3 This is a schematic diagram of the feeding mechanism of this utility model;

[0018] Figure 4This is a schematic diagram of the cooling mechanism of this utility model;

[0019] Figure 5 This is a schematic diagram of the structure of the second cooling ring of this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the bracket of this utility model.

[0021] In the diagram: 1. Base; 2. Heating cover; 3. Screw conveyor; 4. Heating pipe; 5. Feeding mechanism; 501. Feed hopper; 502. Fixed rod; 503. Motor; 504. Transmission rod; 505. Rotating frame; 6. Discharge pipe; 7. Blown film die head; 8. Cooling mechanism; 801. Fixed seat; 802. Bolt; 803. Support plate; 804. First cooling ring; 805. Buckle; 806. Second cooling ring; 807. Slot; 808. Positioning rod; 809. Air outlet; 810. Air cooler; 811. Connecting pipe; 9. Bracket; 10. Traction roller; 11. A-frame; 12. Rewinding frame; 13. Rewinding roller. Detailed Implementation

[0022] 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.

[0023] Please see Figure 1-3 This utility model provides a technical solution: a plastic film blowing machine, including a base 1, a heating cover 2 fixed above the base 1, a screw conveyor 3 installed inside the heating cover 2, a heating pipe 4 installed outside the screw conveyor 3, and a feeding mechanism 5 installed above the heating cover 2. The feeding mechanism 5 includes a feeding hopper 501, a fixing rod 502, a motor 503, a transmission rod 504, and a rotating frame 505. The feeding hopper 501 is fixed above the heating cover 2, a fixing rod 502 is fixed to one side of the feeding hopper 501, a motor 503 is installed above the fixing rod 502, and a transmission rod is installed below the motor 503. 504. A rotating frame 505 is fixed below the transmission rod 504, which helps to maintain the smooth operation of the blown film machine and reduce equipment downtime. The rotating frame 505 forms a rotating structure with the feed hopper 501 through the transmission rod 504. The rotating frame 505 is symmetrical about the transmission rod 504 as the central axis. The rotating frame 505 is driven to rotate by the motor 503, which agitates the plastic particles inside the feed hopper 501 and reduces the risk of blockage of plastic particles at the feed hopper 501. A discharge pipe 6 is fixed at one end of the screw conveyor 3. A blown film die head 7 is fixed on one side of the discharge pipe 6. A cooling mechanism 8 is provided on the outside of the blown film die head 7.

[0024] Please see Figure 6 A bracket 9 is fixed on one side above the base 1. A traction roller 10 is installed above the bracket 9. A A-frame 11 is installed below the traction roller 10. A winding frame 12 is fixed below one side of the bracket 9. A winding roller 13 is installed inside the winding frame 12. The formed plastic film is pulled onto the winding roller 13 by the traction roller 10 and wound up, which facilitates winding.

[0025] Please see Figure 4-5 The cooling mechanism 8 includes a fixed base 801, bolts 802, a support plate 803, a first cooling ring 804, a buckle 805, a second cooling ring 806, a slot 807, a positioning rod 808, an air outlet 809, a cooler 810, and a connecting pipe 811. The fixed base 801 is fixed to both sides of the blown film die head 7. Bolts 802 are provided on both sides of the fixed base 801. The support plate 803 is installed above the fixed base 801. The first cooling ring 804 is fixed to one side of the support plate 803. The first cooling ring 804 is engaged with the second cooling ring 806 through the buckle 805. The first cooling ring 804 and the second cooling ring 806 are the same size. The first cooling ring 804 and the second cooling ring 806 are designed to be disassembled and reassembled. This allows the first cooling ring 804 and the second cooling ring 806 to be disassembled and reassembled without affecting the blown film die head 7. Simply align the buckle 805 with the slot 807. The assembly of the first cooling ring 804 and the second cooling ring 806 can be completed by inserting and removing the positioning rod 808. A buckle 805 is fixed on one side of the first cooling ring 804, and the second cooling ring 806 is provided on one side of the first cooling ring 804. A slot 807 is opened on one side of the second cooling ring 806, and positioning rods 808 are installed on both sides of the second cooling ring 806. Air vents 809 are installed inside the first cooling ring 804 and the second cooling ring 806. Cooling fans 810 are provided on both sides above the base 1. A connecting pipe 811 is installed above the cooling fan 810. The connecting pipe 811 is installed on one side of the first cooling ring 804 and the second cooling ring 806 respectively. The number of air vents 809 inside the first cooling ring 804 and the second cooling ring 806 is the same. Multiple air vents 809 are evenly distributed inside the first cooling ring 804 and the second cooling ring 806, so that the cold air is evenly blown onto the membrane bubble, improving the molding quality.

[0026] Working principle: When using this plastic film blowing machine, first connect the external power supply, then pour the plastic particles into the inside of the feed hopper 501. At the same time, the motor 503 drives the rotating frame 505 to rotate, stirring the plastic particles inside the feed hopper 501, so that the plastic particles enter the screw conveyor 3 for conveying. At the same time, the heating pipe 4 heats and melts the plastic particles, and then conveys them from the discharge pipe 6 to the blowing die head 7 to be blown out to form a film bubble. Next, turn on the switch of the cold air fan 810, so that cold air is blown from the air outlet 809 to the film bubble to accelerate cooling. The formed plastic film is pulled by the traction roller 10 to the winding roller 13 and wound up. When the device is not in use, disconnect the external power supply of the device. In this way, the use process of the plastic film blowing machine is completed.

[0027] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A plastic film blown film machine comprising a base (1), characterised in that: The upper side of the base (1) is fixed with a heating cover (2), the inside of the heating cover (2) is installed with a screw conveyor (3), the outside of the screw conveyor (3) is installed with a heating pipe (4), the upper side of the heating cover (2) is installed with a feeding mechanism (5), one end of the screw conveyor (3) is fixed with a discharging pipe (6), one side of the discharging pipe (6) is fixed with a film blowing die head (7), the outside of the film blowing die head (7) is provided with a cooling mechanism (8), the upper side of the base (1) is fixed with a support (9), the upper side of the support (9) is installed with a traction roller (10), the lower side of the traction roller (10) is installed with a herringbone frame (11). The cooling mechanism (8) comprises a fixed seat (801), a bolt (802), a supporting plate (803), a first cooling ring (804), a buckle (805), a second cooling ring (806), a clamping groove (807), a positioning rod (808), an air port (809), a cold air machine (810) and a connecting pipe (811), the fixed seat (801) is fixed on both sides of the film blowing die head (7), the fixed seat (801) is provided with a bolt (802) on both sides, the fixed seat (801) is installed with a supporting plate (803) on the upper side, the supporting plate (803) is fixed with a first cooling ring (804) on one side, the first cooling ring (804) is fixed with a buckle (805) on one side, the first cooling ring (804) is provided with a second cooling ring (806) on one side, the second cooling ring (806) is provided with a clamping groove (807) on one side, the second cooling ring (806) is installed with a positioning rod (808) on both sides, the first cooling ring (804) and the second cooling ring (806) are installed with an air port (809) in the inside, the upper side of the base (1) is provided with a cold air machine (810) on both sides, the cold air machine (810) is installed with a connecting pipe (811) on the upper side.

2. A plastic film blowing machine according to claim 1, characterized in that The feeding mechanism (5) comprises a feeding hopper (501), a fixed rod (502), a motor (503), a transmission rod (504) and a rotating frame (505), the feeding hopper (501) is fixed on the upper side of the heating cover (2), one side of the feeding hopper (501) is fixed with a fixed rod (502), the upper side of the fixed rod (502) is installed with a motor (503), the lower side of the motor (503) is installed with a transmission rod (504), the lower side of the transmission rod (504) is fixed with a rotating frame (505).

3. A plastic film blowing machine according to claim 2, characterized in that The rotating frame (505) constitutes a rotating structure with the feeding hopper (501) through the transmission rod (504), and the rotating frame (505) is symmetrical about the transmission rod (504) as the central axis.

4. A plastic film blowing machine according to claim 1, wherein The first cooling ring (804) is connected with the second cooling ring (806) through the buckle (805), and the first cooling ring (804) and the second cooling ring (806) are of the same size.

5. A plastic film blowing machine according to claim 1, wherein The connecting pipes (811) are respectively arranged on one side of the first cooling ring (804) and the second cooling ring (806), and the first cooling ring (804) and the second cooling ring (806) are provided with the same number of air inlets (809) on the inner side.

6. A plastic film blowing machine according to claim 1, wherein One side of the support (9) is fixed with a winding frame (12), and the winding frame (12) is internally provided with a winding roller (13).

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