Filtering device for PE film blowing machine

Abstract

The utility model relates to the technical field of film blowing machines, in particular to a filtering device for a PE (Poly Ethylene) film blowing machine, which comprises a box body, a feed hopper fixed at the top end of the box body, a guide hopper fixed at the bottom end in the box body, a discharge hole formed in the bottom end of the guide hopper, and limiting guide rods fixed on two sides of two ends in the box body, a filter screen is slidably connected to the outer side of the limiting guide rod, a stirring mechanism used for smashing plastic particles is arranged above the filter screen, and a driving mechanism is arranged below the filter screen. According to the filtering device for the PE film blowing machine, the driving mechanism drives the filter screen and the limiting guide rod to quickly slide up and down, so that the vibration rate of the filter screen is improved, plastic particles blocked in the filter screen can be conveniently discharged, and the filtering effect of the filter screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of film blowing machines, in particular to a filtering device for a PE film blowing machine. Background Technique

[0002] A film blowing machine is a special device that melts plastic particles and blows them into films. The film blowing machine extrudes the molten plastic through an extruder, filters it through the machine head, and then extrudes it through a heated die head. The plastic is cooled and blown into a film bubble by an internal and external cold air ring, and then the plastic film is collected by a bubble stabilizer, a chevron plate, a traction roller, and a coiling device.

[0003] For example, patent (CN212312442U) discloses a filtering device for a double-bubble film blowing machine, which includes a box body. An inlet is provided on the upper wall of the box body, and a filtering component and a driving component for driving the filtering component to shake are arranged inside the box body; the filtering component includes a filter screen and a frame arranged outside the filter screen and distributed along the circumference of the filter screen. The embodiment of the utility model has the advantages of simple structure and good filtering effect. The material to be screened is put into the box body from the inlet and falls on the upper part of the filter screen. The motor drives the turntable to rotate through the drive shaft, and the turntable drives the push rod to perform a circular motion. Since the push rod extends into the support cylinder, when the push rod performs a circular motion, the frame and the filter screen are pulled along the support platform by the support cylinder to shake horizontally, so as to screen the material on the upper part of the filter screen and realize the filtering of the material.

[0004] When using the above technology, it is found that the following technical problems exist in the prior art: the sizes and thicknesses of plastic particles in the prior art are different, which will cause the filter screen to be unable to screen out the thick plastic particles. Therefore, the prior art needs to process the thick plastic particles to a uniform thickness, and the prior art uses a translation method to improve the filtering effect. Due to the too small translation vibration amplitude, the filtering effect is imperfect. Therefore, we design a filtering device for a PE film blowing machine to provide another technical solution for the above technical problems. Content of the Utility Model

[0005] Based on this, in view of the above technical problems, it is necessary to provide a filtering device for a PE film blowing machine. When in use, plastic particles are poured from the feed hopper into the box body. At this time, the sizes and thicknesses of the plastic particles are different. Then, the plastic particles are broken by the stirring mechanism to a size that can pass through the filter screen. When the filter screen is blocked, the driving mechanism drives the filter screen and the limit guide rod to slide up and down quickly, thereby increasing the vibration rate of the filter screen, facilitating the discharge of the plastic particles blocked inside the filter screen, and thus improving the filtering effect of the filter screen.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A filtering device for a PE blown film machine, comprising a box body. A feeding hopper is fixed at the top end of the box body. A material guiding hopper is fixed at the bottom end inside the box body. A discharge port is opened at the bottom end of the material guiding hopper. Limiting guide rods are fixed on both sides at both ends inside the box body. A filter screen is slidably connected to the outer side of the limiting guide rods. A stirring mechanism for smashing plastic particles is arranged above the filter screen, and a driving mechanism is arranged below the filter screen.

[0008] As a preferred embodiment of the filtering device for a PE blown film machine provided by the present utility model, the stirring mechanism includes a transmission rod. Transmission rods are rotatably connected to both sides inside the box body. U-shaped stirring rods are fixed at the top end and the bottom end of the outer side of the transmission rod. A servo motor is fixed at one end of the box body. The output end of the servo motor is fixed to one of the transmission rods.

[0009] As a preferred embodiment of the filtering device for a PE blown film machine provided by the present utility model, one ends of the two transmission rods pass through the box body and are fixed with transmission cylinders. The two transmission cylinders are rotationally connected by a belt.

[0010] As a preferred embodiment of the filtering device for a PE blown film machine provided by the present utility model, a spring is sleeved on the outer side of the limiting guide rod. The top end of the spring is fixed to the filter screen, and the bottom end of the spring is fixed to the limiting guide rod.

[0011] As a preferred embodiment of the filtering device for a PE blown film machine provided by the present utility model, the driving mechanism includes a rotating rod. The rotating rod is rotatably connected to the bottom end inside the box body. Transmission rollers are fixed on both sides of the filter screen. A driving motor is fixed on one side of the box body. The output end of the driving motor is fixed to the rotating rod.

[0012] As a preferred embodiment of the filtering device for a PE blown film machine provided by the present utility model, the connection position between the transmission roller and the rotating rod deviates from the center position of the transmission roller.

[0013] It can be undoubtedly seen that through the above technical solutions of the present application, the technical problems to be solved by the present application can surely be solved.

[0014] Meanwhile, through the above technical solutions, the present utility model has at least the following beneficial effects:

[0015] For the filtering device for a PE blown film machine provided by the present utility model, the output end of the servo motor drives one of the transmission rods and the U-shaped stirring rods to stir. The transmission cylinders and the belt drive the two transmission rods and the U-shaped stirring rods to rotate synchronously, thereby stirring and smashing the plastic particles, and then improving the quality of the plastic particles.

[0016] When a blockage occurs in the servo motor, the output end of the drive motor drives the rotating rod and the transmission roller to rotate, causing the transmission roller to drive the filter screen to slide up and down to generate vibration, which facilitates the discharge of the blocked plastic particles inside the filter screen, thereby improving the filtering effect of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the box body of the present invention;

[0020] Figure 3 It is a schematic diagram of the stirring mechanism structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the drive mechanism structure of the present invention.

[0022] In the figure: 1, box body; 2, feed hopper; 3, servo motor; 4, transmission rod; 5, U-shaped stirring rod; 6, material guiding hopper; 7, transmission cylinder; 8, drive motor; 9, limit guiding rod; 10, spring; 11, transmission roller; 12, rotating rod; 13, filter screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the purpose, technical solutions and advantages of the present invention clearer, the following will further describe the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0024] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings.

[0025] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments can be combined with each other.

[0026] It should be noted that similar reference numerals and letters in the following drawings represent similar items. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0027] Embodiment 1

[0028] Refer to Figures 1 - 4 Figures 1 - 4 , a filtering device for a PE blown film machine, including a box body 1, a feeding hopper 2 is fixed at the top end of the box body 1, a material guiding hopper 6 is fixed at the bottom end inside the box body 1, a discharge port is opened at the bottom end of the material guiding hopper 6, limiting guide rods 9 are fixed on both sides of both ends inside the box body 1, a filter screen 13 is slidably connected to the outside of the limiting guide rods 9, a stirring mechanism for crushing plastic particles is arranged above the filter screen 13, and a driving mechanism is arranged below the filter screen 13;

[0029] When in use, plastic particles are poured into the inside of the box body 1 from the feeding hopper 2. At this time, the plastic particles are of different sizes and thicknesses. Then, they are crushed by the stirring mechanism to pass through the screening of the filter screen 13. When the filter screen 13 is blocked, the driving mechanism drives the filter screen 13 and the limiting guide rods 9 to slide up and down quickly, thereby increasing the vibration rate of the filter screen 13, facilitating the discharge of the blocked plastic particles inside the filter screen 13, and thus improving the filtering effect of the filter screen 13;

[0030] The stirring mechanism includes a transmission rod 4. The two sides inside the box body 1 are rotatably connected with the transmission rod 4. The top end and the bottom end of the outside of the transmission rod 4 are fixed with U-shaped mixing rods 5. One end of the box body 1 is fixed with a servo motor 3, and the output end of the servo motor 3 is fixed with one of the transmission rods 4;

[0031] The output end of the servo motor 3 drives one of the transmission rods 4 and the U-shaped mixing rods 5 to stir. The transmission cylinder 7 and the belt drive the two transmission rods 4 and the U-shaped mixing rods 5 to rotate synchronously, thereby stirring and crushing the plastic particles;

[0032] One end of the two transmission rods 4 passes through the box body 1 and is fixed with a transmission cylinder 7. The two transmission cylinders 7 are rotationally connected by a belt;

[0033] A spring 10 is sleeved on the outside of the limiting guide rod 9. The top end of the spring 10 is fixed with the filter screen 13, and the bottom end of the spring 10 is fixed with the limiting guide rod 9;

[0034] The driving mechanism includes a rotating rod 12. The bottom end inside the box body 1 is rotatably connected with the rotating rod 12. Transmission rollers 11 are fixed on both sides of the filter screen 13. One side of the box body 1 is fixed with a driving motor 8. The output end of the driving motor 8 is fixed with the rotating rod 12. The connection position between the transmission roller 11 and the rotating rod 12 deviates from the center position of the transmission roller 11;

[0035] The output end of the driving motor 8 drives the rotating rod 12 and the transmission roller 11 to rotate, so that the transmission roller 11 drives the filter screen 13 to move up and down. At this time, the elastic force of the spring 10 drives the filter screen 13 to quickly reset downward, and the transmission roller 11 quickly reciprocates the filter screen 13, thereby causing the filter screen 13 to vibrate.

[0036] The usage process of a filtering device for a PE blown film machine provided by the present utility model is as follows: during use, plastic particles are poured into the interior of the box body 1 from the feed hopper 2. At this time, the plastic particles are of different sizes and thicknesses. The output end of the servo motor 3 drives one of the transmission rods 4 and the U-shaped stirring rod 5 to stir, and the transmission cylinder 7 and the belt drive the two transmission rods 4 and the U-shaped stirring rod 5 to rotate synchronously, thereby stirring and breaking the plastic particles;

[0037] When the filter screen 13 is blocked, the output end of the drive motor 8 drives the rotating rod 12 and the transmission roller 11 to rotate, so that the transmission roller 11 drives the filter screen 13 to slide up and down to generate vibration, which is convenient for discharging the blocked plastic particles inside the filter screen 13, thereby improving the filtering effect of the filter screen 13.

[0038] The preferred embodiments of the present utility model disclosed above are only used to help illustrate the present utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the present utility model to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. These embodiments are selected and specifically described in this specification in order to better explain the principle and practical application of the present utility model, so that those skilled in the relevant technical field can well understand and utilize the present utility model. The present utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A filtering device for a PE film blowing machine, characterized in that: The invention comprises a box body (1), a feed hopper (2) is fixed at the top of the box body (1), a guide hopper (6) is fixed at the bottom of the box body (1), a discharge port is provided at the bottom of the guide hopper (6), limiting guide rods (9) are fixed on both sides of the two ends of the box body (1), a filter screen (13) is slidably connected to the outer side of the limiting guide rod (9), a stirring mechanism for crushing plastic particles is arranged above the filter screen (13), and a driving mechanism is arranged below the filter screen (13).

2. A filtering device for a PE film blowing machine according to claim 1, characterized in that: The stirring mechanism comprises a transmission rod (4), both sides of the box body (1) are rotatably connected to the transmission rod (4), the top and bottom ends of the outer sides of the transmission rod (4) are fixed with U-shaped stirring rods (5), one end of the box body (1) is fixed with a servo motor (3), and the output end of the servo motor (3) is fixed to one of the transmission rods (4).

3. A filtering device for a PE film blowing machine according to claim 2, characterized in that: One end of the two transmission rods (4) passes through the box body (1) and is fixed with a transmission cylinder (7), and the two transmission cylinders (7) are rotationally connected via a belt.

4. A filtration device for a PE film blowing machine according to claim 3, characterized in that: A spring (10) is sleeved on the outer side of the limiting guide rod (9), the top end of the spring (10) is fixed to the filter screen (13), and the bottom end of the spring (10) is fixed to the limiting guide rod (9).

5. A filtering device for a PE film blowing machine according to claim 2, characterized in that: The driving mechanism comprises a rotating rod (12), the bottom end of the box body (1) is rotatably connected to the rotating rod (12), transmission rollers (11) are fixed on both sides of the filter screen (13), a driving motor (8) is fixed on one side of the box body (1), and the output end of the driving motor (8) is fixed to the rotating rod (12).

6. A filtering device for a PE film blowing machine according to claim 5, characterized in that: The connection point between the transmission roller (11) and the rotating rod (12) deviates from the center position of the transmission roller (11).

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