Plastic film blowing machine with impurity treatment structure
By installing a screening mechanism inside the preheating box of the plastic blown film machine, the problem of filtering large particle impurities was solved, achieving anti-clogging and high-efficiency production of the equipment.
Patent Information
- Application Number
- CN202423051685.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-11
- Publication Date
- 2025-11-04
- Estimated Expiration
- 2034-12-11
AI Technical Summary
Existing plastic blown film machines cannot effectively filter large particulate impurities in plastic particles, leading to equipment damage and blockage.
An impurity screening mechanism, including a screening frame, a limit rod, and an electric drive mechanism, is installed inside the preheating chamber. The screening frame is moved by the electric drive mechanism to screen out large-diameter impurities, which are then removed and cleaned through the chamber door.
It effectively filters out large particles of impurities from plastic granules, preventing equipment blockage and improving production efficiency and equipment lifespan.
Smart Images
Figure CN223507670U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic blown film machine technology, specifically a plastic blown film machine with an impurity treatment structure. Background Technology
[0002] A plastic blown film machine is a device that heats and melts plastic particles and then blows them into a thin film. It is mainly used for producing high-end film packaging, plastic bags, etc. There are various types of plastic blown film machines, such as those for PE, POF, and PVC.
[0003] A search revealed that existing technologies, such as the one described in announcement number CN219855962U, include a plastic strip extrusion blown film machine. This machine includes a body comprising an extrusion blown film chamber and a feeding hopper chamber. The extrusion blown film chamber includes a shell cavity, with sealing seats and a die head installed at its left and right ends respectively. An extrusion screw is installed inside the shell cavity. The feeding hopper chamber includes a heating chamber, with a discharge pipe connected to its lower end. The other end of the discharge pipe is connected to the upper left side of the extrusion blown film chamber. A second heating layer is fixedly connected inside the jacket of the heating chamber. A sealing cover is installed at the upper end of the heating chamber, with a feed inlet connected to its upper end. A temperature sensor is fixedly connected to the lower end of the sealing cover. This reduces the melting time of the plastic raw material inside the extrusion blown film chamber, improving production efficiency. Furthermore, a spiral blade is fixedly connected to the outer wall of the stirring shaft on the inner side wall of the discharge pipe. The rotation of the spiral blade controls the uniform discharge of the plastic.
[0004] In summary, existing plastic blown film machines can control the uniform discharge of plastic, but they cannot filter out large particulate impurities in the plastic particles. Large particulate impurities entering the blown film machine can cause damage and blockage inside the machine. Therefore, a plastic blown film machine with an impurity treatment structure is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a plastic blown film machine with an impurity treatment structure to solve the problem mentioned in the background art that existing plastic blown film machines cannot filter large particulate impurities in plastic particles.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a plastic blown film machine with an impurity treatment structure, comprising a preheating box, a door hinged to the top of the preheating box, and a feed inlet on the door; an impurity screening mechanism installed inside the preheating box, and a stirring device below the impurity screening mechanism; the discharge port of the preheating box connected to the feed inlet of the extrusion cylinder via a discharge pipe, and the extrusion end of the extrusion cylinder connected to the blown film head; an extrusion screw installed inside the extrusion cylinder, and one end of the extrusion screw connected to a second drive motor; the impurity screening mechanism includes a screening frame, and one side of the screening frame connected to a limiting plate on the outside of the preheating box via a first limiting rod; a spring installed on the inner wall of one side of the preheating box, and the other end of the spring connected to the outside of the screening frame; the other side of the screening frame connected to a drive plate on the outside of the preheating box via a second limiting rod; and an electric drive mechanism for use with the drive plate installed on the outside of the preheating box.
[0007] Preferably, the electric drive mechanism includes two sets of mounting plates, and a drive rod is rotatably arranged on the inner side of the two sets of mounting plates. One end of the drive rod is connected to the first drive motor, and a cam that cooperates with the drive disc is installed on the outer side of the drive rod.
[0008] The above technical solution facilitates the movement of the filter box.
[0009] Preferably, a heating plate is installed inside the preheating box.
[0010] The above technical solution facilitates the preheating of plastic granules.
[0011] Preferably, a matching valve is installed inside the discharge pipe.
[0012] The above technical solution controls the opening and closing of the discharge pipe.
[0013] Preferably, a protective isolation cover is provided on the outside of the extrusion cylinder, and several sets of heating rods are installed inside the protective isolation cover.
[0014] The above technical solution facilitates heating of the inside of the extrusion cylinder.
[0015] Preferably, both the preheating box and the extrusion cylinder are mounted on top of the base.
[0016] The above technical solution facilitates the installation of the preheating box and the extrusion cylinder.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: This plastic blown film machine with impurity treatment structure solves the problem that existing plastic blown film machines cannot filter large particulate impurities in plastic particles. It installs an impurity screening mechanism inside the preheating box. The impurity screening mechanism includes a screening frame, one side of which is connected to a limiting plate on the outside of the preheating box via a first limiting rod. A spring is installed on the inner wall of one side of the preheating box, and the other end of the spring is connected to the outside of the screening frame. The other side of the screening frame is connected to a drive plate on the outside of the preheating box via a second limiting rod. An electric drive mechanism that works with the drive plate is installed on the outside of the preheating box. During use, plastic particles are poured into the screening frame, and the first drive motor in the electric drive mechanism is turned on. Under the action of the first drive motor, the screening frame moves and screens. Large-diameter impurities in the plastic particles cannot be screened and remain inside the screening frame. They can be removed and cleaned later by opening the box door. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the overall front cross-sectional structure of this utility model;
[0019] Figure 2 This is a schematic diagram of the internal structure of the preheating box of this utility model;
[0020] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle;
[0021] Figure 4 This utility model Figure 2 Enlarged structural diagram at point B.
[0022] In the diagram: 1. Preheating box; 101. Box door; 102. Feed inlet; 103. Heating plate; 2. Impurity screening mechanism; 201. Screening frame; 202. First limiting rod; 203. Limiting plate; 204. Spring; 205. Second limiting rod; 206. Drive plate; 3. Stirring device; 4. Discharge pipe; 5. Extrusion cylinder; 501. Extrusion screw; 5011. Second drive motor; 502. Protective isolation cover; 503. Heating rod; 6. Blown film head; 7. Electric drive mechanism; 701. Mounting plate; 702. Drive rod; 703. First drive motor; 704. Cam; 8. Base. Detailed Implementation
[0023] 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.
[0024] Please see Figure 1-4 This utility model provides a technical solution: a plastic blown film machine with an impurity treatment structure, wherein the discharge port of the preheating box 1 is connected to the inlet of the extrusion cylinder 5 through the discharge pipe 4.
[0025] Specifically, the preheating box 1 is hinged to the top of the box door 101, which is equipped with a door lock and a door handle. The box door 101 facilitates the maintenance of the interior of the preheating box 1 and the removal of large particles of impurities. The box door 101 is provided with a feed inlet 102. An impurity screening mechanism 2 is installed inside the preheating box 1, and a stirring device 3 is provided below the impurity screening mechanism 2. A heating plate 103 is installed inside the preheating box 1, which can heat the interior of the preheating box 1, thereby preheating the plastic particles.
[0026] Specifically, the impurity screening mechanism 2 includes a screening frame 201. One side of the screening frame 201 is connected to a limiting plate 203 on the outside of the preheating box 1 via a first limiting rod 202. The limiting plate 203 can limit the movement position of the first limiting rod 202. A spring 204 is installed on the inner wall of one side of the preheating box 1, and the other end of the spring 204 is connected to the outside of the screening frame 201. The spring 204 can drive the screening frame 201 to return to its original position. The other side of the screening frame 201 is connected to a drive plate 206 on the outside of the preheating box 1 via a second limiting rod 205. An electric drive mechanism 7 that works with the drive plate 206 is installed on the outside of the preheating box 1. The electric drive mechanism 7 includes two sets of mounting plates 701. A drive rod 702 is rotatably mounted on the inner side of the mounting plate 701. One end of the drive rod 702 is connected to the first drive motor 703, and a cam 704 that works with the drive disk 206 is mounted on the outer side of the drive rod 702. When it is necessary to screen the plastic particles placed inside the screening frame 201, the first drive motor 703 is turned on. Under the action of the first drive motor 703, the cam 704 is rotated through the drive rod 702. Under the action of the rotation of the cam 704, the drive disk 206 moves, thereby driving the screening frame 201 to move and screen through the second limit rod 205. Large-diameter impurities in the plastic particles cannot be screened and remain inside the screening frame 201, thereby separating the large particle impurities.
[0027] To further explain, a matching valve is installed inside the discharge pipe 4, which facilitates the opening and closing of the discharge pipe 4.
[0028] Specifically, the extrusion end of the extrusion cylinder 5 is connected to the blown film head 6, and an extrusion screw 501 is installed inside the extrusion cylinder 5, with one end of the extrusion screw 501 connected to the second drive motor 5011.
[0029] In a further embodiment, a protective isolation cover 502 is provided on the outside of the extrusion cylinder 5, and several sets of heating rods 503 are installed inside the protective isolation cover 502. The heating rods 503 can heat the inside of the extrusion cylinder 5, and the protective isolation cover 502 can prevent external objects from coming into contact with the heating rods 503.
[0030] In a further embodiment, both the preheating box 1 and the extrusion cylinder 5 are mounted above the base 8.
[0031] In use, plastic granules are fed into the screening frame 201 through the feed inlet 102. Under the action of the first drive motor 703, large-diameter impurities in the plastic granules are filtered out. The filtered plastic granules enter the extrusion cylinder 5 through the discharge pipe 4. The second drive motor 5011 drives the extrusion screw 501 to rotate and move the plastic granules. The heating rod 503 heats the plastic granules and finally enters the blown film head 6 for blown film operation.
[0032] The terms “center,” “longitudinal,” “lateral,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.
[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A plastic blown film machine with an impurity treatment structure, comprising a preheating box (1), characterized in that: The preheating box (1) is hinged to the top of the box door (101), and the box door (101) is provided with a feed inlet (102). The preheating box (1) is equipped with an impurity screening mechanism (2), and a stirring device (3) is provided below the impurity screening mechanism (2). The discharge port of the preheating box (1) is connected to the feed port of the extrusion cylinder (5) through the discharge pipe (4), and the extrusion end of the extrusion cylinder (5) is connected to the blown film head (6). The extrusion cylinder (5) is provided with an extrusion screw (501), and one end of the extrusion screw (501) is connected to the second drive motor (5011). The impurity screening mechanism (2) includes a screening frame (201), and one side of the screening frame (201) is connected to a limiting plate (203) provided on the outside of the preheating box (1) through a first limiting rod (202). A spring (204) is installed on the inner wall of one side of the preheating box (1), and the other end of the spring (204) is connected to the outside of the screening frame (201). The other side of the screening frame (201) is connected to a drive plate (206) provided on the outside of the preheating box (1) through a second limiting rod (205). An electric drive mechanism (7) that works with the drive plate (206) is installed on the outside of the preheating box (1).
2. The plastic blown film machine with an impurity treatment structure according to claim 1, characterized in that: The electric drive mechanism (7) includes two sets of mounting plates (701), and a drive rod (702) is rotatably arranged on the inner side of the two sets of mounting plates (701). One end of the drive rod (702) is connected to the first drive motor (703), and a cam (704) that cooperates with the drive disk (206) is installed on the outer side of the drive rod (702).
3. A plastic blown film machine with an impurity treatment structure according to claim 1, characterized in that: The preheating box (1) is equipped with a heating plate (103).
4. A plastic blown film machine with an impurity treatment structure according to claim 1, characterized in that: The discharge pipe (4) is equipped with a matching valve.
5. A plastic blown film machine with an impurity treatment structure according to claim 1, characterized in that: The extrusion cylinder (5) is provided with a protective isolation cover (502) on the outside, and a number of heating rods (503) are installed inside the protective isolation cover (502).
6. A plastic blown film machine with an impurity treatment structure according to claim 1, characterized in that: The preheating box (1) and the extrusion cylinder (5) are both installed above the base (8).