Plastic film blowing equipment capable of stably outputting plastic films

Abstract

The utility model provides plastic film blowing equipment capable of outputting plastic films stably, which relates to the technical field of film blowing equipment and comprises a bottom plate, a spiral conveyor is fixedly mounted at the top of the bottom plate, a power component is fixedly mounted at one end of the spiral conveyor, and a feed hopper is fixedly mounted at the top of the spiral conveyor. A film conveying and blowing assembly is fixedly installed at the end, away from the power assembly, of the spiral conveyor, an air ring is fixedly installed at the top of the film conveying and blowing assembly, a draught fan is fixedly installed at the top of the spiral conveyor, and an air pipe is fixedly installed at the output end of the draught fan; the wind shield is driven by the first motor to move, so that the influence of external wind power on the film can be effectively blocked, a relatively stable environment is created for stable output of the film, and meanwhile, the wind shield can be accurately matched with the output height of the film by replacing wind shields with different heights; and when the height of the wind shield is consistent with the output height of the film, the most effective windproof protection can be provided.

Description

Technical Field

[0001] This utility model relates to the field of blown film equipment technology, and in particular to a blown film equipment for stable output of plastic film. Background Technology

[0002] In the field of plastic film production, blown film equipment is the key equipment for transforming plastic granules into plastic films. With the development of modern industry, the application range of plastic films is becoming increasingly wide, covering many fields such as packaging, agriculture, and construction, and the requirements for their quality and production stability are also becoming increasingly stringent.

[0003] Currently, traditional blown film equipment has many limitations in technology and design. In the film output stage, it often faces the problem of external wind interference. Due to the lack of effective wind protection measures, external natural wind or airflow fluctuations in the workshop can significantly affect the film being output. For example, in some simple blown film workshops, blown film equipment located near doors, windows or ventilation equipment is prone to airflow impact during the output process, causing the film to shake and stretch unevenly. This not only causes deviations in film thickness and affects its physical properties, but may also cause defects such as wrinkles and scratches on the film surface, seriously reducing product quality, increasing the defect rate, and causing economic losses to enterprises. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to solve the problem of external wind interference in the film output stage in the existing technology, and to propose a stable plastic film blowing device.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a stable output plastic film blowing device, comprising a base plate, a screw conveyor fixedly installed on the top of the base plate, a power assembly fixedly installed at one end of the screw conveyor, a feed hopper fixedly installed on the top of the screw conveyor, a blown film conveying assembly fixedly installed at the end of the screw conveyor away from the power assembly, an air ring fixedly installed on the top of the blown film conveying assembly, a fan fixedly installed on the top of the screw conveyor, an air duct fixedly installed at the output end of the fan, an electric heating ring fixedly installed inside the screw conveyor, and an opening at the top of the base plate. A chute is provided. A first motor is fixedly installed on one side of the base plate. A bidirectional lead screw is fixedly installed on the output end of the first motor. A sliding seat is symmetrically threaded to the outer wall of the bidirectional lead screw. A windshield is slidably connected inside the sliding seat. A limiting hole is formed through the outer wall of the windshield and one side of the sliding seat. A connecting frame is fixedly installed on one side of the sliding seat. A limiting post is slidably connected inside the connecting frame. A fixing ring is fixedly installed on the outer wall of the limiting post. A connecting rod is fixedly installed on the outer wall of one end of the limiting post. A return spring is sleeved on the outer wall of the limiting post. A PCL controller is fixedly installed on one side of the screw conveyor.

[0006] Preferably, the air duct and the air ring are fixedly connected. This fixed connection ensures that the cooling air output by the fan can be stably and efficiently delivered to the air ring.

[0007] Preferably, one end of the return spring is fixedly connected to the connecting frame, and the other end of the return spring is fixedly connected to the retaining ring. This fixed connection improves the stability of the return spring during use.

[0008] Preferably, the limiting post and the limiting hole are slidably connected, and the sliding seat and the sliding groove are slidably connected. Here, the slidable connection between the limiting post and the limiting hole ensures the windshield is fixed within the sliding seat, and the slidable connection between the sliding seat and the sliding groove provides stable guidance for the movement of the sliding seat.

[0009] Preferably, both the fan and the electric heating ring are electrically connected to the PCL controller. Here, the PCL controller can precisely control the fan speed and the heating power of the electric heating ring according to preset production process parameters, thus realizing intelligent control of the equipment.

[0010] Preferably, a fixing sleeve is fixedly installed on the top of the base plate, a toothed rod is slidably connected inside the fixing sleeve, a sealing plate is fixedly installed on the top of the toothed rod, a fixing frame is fixedly installed on one side of the fixing sleeve, a second motor is fixedly installed inside the fixing frame, and a gear is fixedly installed on the output end of the second motor. Here, by starting the second motor, the second motor will drive the gear to rotate. During the rotation of the gear, it will drive the toothed rod that meshes with it to slide downward inside the fixing sleeve. During the downward sliding of the toothed rod, it will drive the sealing plate to move downward together. After moving a certain distance, the sealing plate will close the feed hopper. By closing the feed hopper, foreign objects can be effectively prevented from entering the screw conveyor from the feed hopper when the screw conveyor is not in use.

[0011] Preferably, the gear and the rack mesh with each other. Here, the meshing improves the vertical movement of the rack.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, the windshield driven by the first motor can effectively block the influence of external wind on the film, creating a relatively stable environment for the stable output of the film. At the same time, by being able to replace the windshield with different heights, the windshield can be precisely matched with the output height of the film. When the height of the windshield is consistent with the output height of the film, the most effective wind protection can be provided.

[0014] 2. In this utility model, by sealing the feed hopper, foreign objects can be effectively prevented from entering the screw conveyor from the feed hopper when the screw conveyor is not in use. This helps to keep the inside of the screw conveyor clean, avoids foreign objects from mixing into the raw materials and affecting the normal operation of the equipment when it is started again, and also prevents foreign objects from damaging the internal components of the equipment, extending the service life of the equipment and reducing the probability of equipment failure. Attached Figure Description

[0015] Figure 1 This utility model provides an overall structural schematic diagram of a plastic film blowing device with stable output.

[0016] Figure 2 This utility model proposes a stable output plastic film blowing device. Figure 1 Enlarged view at point B in the middle;

[0017] Figure 3 This utility model provides a cross-sectional structural diagram of a stable output plastic film blowing device;

[0018] Figure 4 This utility model provides an exploded structural diagram of a stable output plastic film blowing device;

[0019] Figure 5 This utility model proposes a stable output plastic film blowing device. Figure 4 Enlarged view of point A in the middle.

[0020] Legend: 1. Base plate; 2. Screw conveyor; 3. Power unit; 4. Feed hopper; 5. Blown film assembly; 6. Air ring; 7. Fan; 8. Air duct; 9. Electric heating ring; 10. Slide rail; 11. First motor; 12. Bidirectional lead screw; 13. Sliding seat; 14. Wind shield; 15. Limiting hole; 16. Connecting frame; 17. Limiting post; 18. Fixing ring; 19. Connecting rod; 20. Return spring; 21. Fixing sleeve; 22. Gear; 23. Sealing plate; 24. Fixing frame; 25. Second motor; 26. Gear; 27. PCL controller. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Please see Figure 1 and Figure 3-5 This utility model provides a technical solution: a stable output plastic film blowing device, including a base plate 1, a screw conveyor 2 fixedly installed on the top of the base plate 1, a power assembly 3 fixedly installed at one end of the screw conveyor 2, a feed hopper 4 fixedly installed on the top of the screw conveyor 2, a film blowing assembly 5 fixedly installed at the end of the screw conveyor 2 away from the power assembly 3, an air ring 6 fixedly installed on the top of the film blowing assembly 5, a fan 7 fixedly installed on the top of the screw conveyor 2, an air duct 8 fixedly installed at the output end of the fan 7, an electric heating ring 9 fixedly installed inside the screw conveyor 2, a sliding groove 10 opened on the top of the base plate 1, and a fixed installation on one side of the base plate 1. A first motor 11 is fixedly mounted on the output end of the first motor 11. A bidirectional lead screw 12 is symmetrically threaded to the outer wall of the bidirectional lead screw 12 and connected to a sliding seat 13. A windshield 14 is slidably connected inside the sliding seat 13. A limiting hole 15 is opened through the outer wall of the windshield 14 and one side of the sliding seat 13. A connecting frame 16 is fixedly mounted on one side of the sliding seat 13. A limiting post 17 is slidably connected inside the connecting frame 16. A fixing ring 18 is fixedly mounted on the outer wall of the limiting post 17. A connecting rod 19 is fixedly mounted on the outer wall of one end of the limiting post 17. A return spring 20 is sleeved on the outer wall of the limiting post 17. A PCL controller 27 is fixedly mounted on one side of the screw conveyor 2.

[0024] The movement of the windshield 14 driven by the first motor 11 can effectively block the influence of external wind on the film, creating a relatively stable environment for the stable output of the film. At the same time, by replacing the windshield 14 with different heights, the windshield 14 can be precisely matched with the output height of the film. When the height of the windshield 14 is consistent with the output height of the film, the most effective wind protection can be provided.

[0025] like Figure 4 As shown, the air duct 8 is fixedly connected to the air ring 6. This fixed connection ensures that the cooling air output by the fan 7 can be stably and efficiently delivered to the air ring 6.

[0026] like Figure 5 As shown, one end of the return spring 20 is fixedly connected to the connecting bracket 16, and the other end of the return spring 20 is fixedly connected to the fixing ring 18. The fixed connection improves the stability of the return spring 20 in use.

[0027] like Figure 5 As shown, the limiting post 17 is slidably connected to the limiting hole 15, and the sliding seat 13 is slidably connected to the sliding groove 10. The slidable connection between the limiting post 17 and the limiting hole 15 ensures the fixed effect of the windshield 14 in the sliding seat 13, and the slidable connection between the sliding seat 13 and the sliding groove 10 provides a stable guide for the movement of the sliding seat 13.

[0028] like Figure 1 and Figure 3 As shown, both the fan 7 and the electric heating ring 9 are electrically connected to the PCL controller 27. The PCL controller 27 can precisely control the speed of the fan 7 and the heating power of the electric heating ring 9 according to the preset production process parameters, thus realizing the intelligent control of the equipment.

[0029] like Figure 1-2 As shown, a fixing sleeve 21 is fixedly installed on the top of the base plate 1. A toothed rod 22 is slidably connected inside the fixing sleeve 21. A sealing plate 23 is fixedly installed on the top of the toothed rod 22. A fixing frame 24 is fixedly installed on one side of the fixing sleeve 21. A second motor 25 is fixedly installed inside the fixing frame 24. A gear 26 is fixedly installed at the output end of the second motor 25. When the second motor 25 is started, it will drive the gear 26 to rotate. During the rotation of the gear 26, it will drive the toothed rod 22, which meshes with it, to slide downward inside the fixing sleeve 21. During the downward sliding of the toothed rod 22, it will drive the sealing plate 23 to move downward together. After moving a certain distance, the sealing plate 23 will close the feed hopper 4. By closing the feed hopper 4, foreign objects can be effectively prevented from entering the screw conveyor 2 from the feed hopper 4 when the screw conveyor 2 is not in use.

[0030] like Figure 2 As shown, gear 26 and rack 22 mesh with each other, which improves the up-and-down movement of rack 22.

[0031] The working principle of this embodiment is as follows: During use, the crushed plastic raw material enters the screw conveyor 2 through the feed hopper 4. After entering, the power component 3 is started, which provides power to the screw conveyor 2 to push the raw material towards the blown film assembly 5. During the conveying process, the electric heating ring 9 inside the screw conveyor 2 heats the raw material to melt it. The heating power of the electric heating ring 9 is precisely controlled by the PCL controller 27 according to the preset temperature parameters to ensure that the raw material reaches a suitable melting state. The melted raw material is conveyed to the blown film assembly 5, where a tubular film preform is formed. After formation, the blower 7 is started. When the blower 7 is working, it will deliver air to the air ring 6 through the air duct 8. After delivery, the air ring 6 will blow cooling air onto the film preform, so that the film preform is quickly cooled and shaped, thereby forming a plastic film. The speed of the blower 7 is controlled by the PCL controller 27, thereby adjusting the cooling air volume of the air ring 6 to adapt to different production needs. To prevent the film from being affected by external wind during output, the first motor 11 can be started. When the first motor 11 is working, it drives the bidirectional lead screw 12 to rotate. Since the sliding seat 13 is threadedly connected to the bidirectional lead screw 12 and slidably connected to the groove 10 on the base plate 1, the rotation of the bidirectional lead screw 12 causes the two sliding seats 13 to move towards each other on the groove 10. During this movement, the two sliding seats 13 will also drive the two windshields 14 to move towards each other. After moving a certain distance, the two windshields 14 will cover the output film, thus preventing external wind from affecting the output stability of the film. Simultaneously, when it is necessary to adjust the output... When changing the windshield 14 to a different height according to the output height of the membrane, first pull the connecting rod 19. The connecting rod 19 drives the limiting post 17 to slide inside the connecting frame 16. During the sliding process, the limiting post 17 will drive the fixing ring 18 to press the return spring 20 towards the inside of the connecting frame 16. After pressing to a certain extent, the limiting post 17 will release the restriction on the windshield 14. After releasing, the windshield 14 is pulled out from the inside of the sliding seat 13. After pulling it out, the new windshield 14 is inserted into the sliding seat 13. After insertion, the connecting rod 19 is released. After releasing, the rebound force of the return spring 20 will push the limiting post 17 into the limiting hole 15. After using the screw conveyor 2, the second motor 25 can be started. When the second motor 25 is working, it will drive the gear 26 to rotate. During the rotation of the gear 26, it will drive the toothed rod 22 that meshes with it to slide downward inside the fixed sleeve 21. During the downward sliding of the toothed rod 22, it will drive the sealing plate 23 to move downward together. After moving a certain distance, the sealing plate 23 will close the feed hopper 4. By closing the feed hopper 4, foreign objects can be effectively prevented from entering the screw conveyor 2 from the feed hopper 4 when the screw conveyor 2 is not in use.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A stable output plastic film blowing film apparatus comprising a base plate (1), characterized in that: The top of the bottom plate (1) is fixedly installed with a spiral conveyor (2), one end of the spiral conveyor (2) is fixedly installed with a power assembly (3), the top of the spiral conveyor (2) is fixedly installed with a feeding hopper (4), the end of the spiral conveyor (2) away from the power assembly (3) is fixedly installed with a blowing film assembly (5), the top of the blowing film assembly (5) is fixedly installed with an air ring (6), the top of the spiral conveyor (2) is fixedly installed with a fan (7), the output end of the fan (7) is fixedly installed with an air pipe (8), the inside of the spiral conveyor (2) is fixedly installed with an electric heating ring (9), the top of the bottom plate (1) is provided with a sliding groove (10), one side of the bottom plate (1) is fixedly installed with a first motor (11), the output end of the first motor (11) is fixedly installed with a bidirectional screw rod (12), the outer wall of the bidirectional screw rod (12) is symmetrically and threadedly connected with a sliding seat (13), the inside of the sliding seat (13) is slidably connected with a wind shield (14), the outer wall of the wind shield (14) is provided with a limiting hole (15) penetrating through one side of the sliding seat (13), one side of the sliding seat (13) is fixedly installed with a connecting frame (16), the inside of the connecting frame (16) is slidably connected with a limiting column (17), the outer wall of the limiting column (17) is fixedly installed with a fixed ring (18), one end of the limiting column (17) is fixedly installed with a connecting rod (19), the outer wall of the limiting column (17) is sleeved with a reset spring (20), one side of the spiral conveyor (2) is fixedly installed with a PCL controller (27).

2. The stable output plastic film blown film apparatus of claim 1, wherein: The air pipe (8) is fixedly connected with the air ring (6).

3. The stable output plastic film blown film apparatus of claim 1, wherein: One end of the reset spring (20) is fixedly connected with the connecting frame (16), and the other end of the reset spring (20) is fixedly connected with the fixed ring (18).

4. The stable output plastic film blown film apparatus of claim 1, wherein: The limiting column (17) is slidably connected with the limiting hole (15), and the sliding seat (13) is slidably connected with the sliding groove (10).

5. The stable output plastic film blown film apparatus of claim 1, wherein: The fan (7) and the electric heating ring (9) are electrically connected with the PCL controller (27).

6. The stable output plastic film blown film apparatus of claim 1, wherein: The top of the bottom plate (1) is fixedly installed with a fixed sleeve (21), the inside of the fixed sleeve (21) is slidably connected with a tooth rod (22), the top end of the tooth rod (22) is fixedly installed with a partition plate (23), one side of the fixed sleeve (21) is fixedly installed with a fixed frame (24), the inside of the fixed frame (24) is fixedly installed with a second motor (25), the output end of the second motor (25) is fixedly installed with a gear (26).

7. The stable output plastic film blown film apparatus of claim 6, wherein: The gear (26) and the tooth rod (22) are meshed with each other.

Images