Extrusion die for plastic film production

Abstract

The utility model relates to the technical field of plastic film production, and specifically discloses an extrusion die for plastic film production, which comprises a left die and a right die, a mounting groove is formed in the center of the top of the left die and the center of the top of the right die, a circular jack is formed in the center of the bottom of the inner wall of the two mounting grooves, and an outlet groove is formed in the bottom of the left die and the right die. The utility model scrapes off foreign matters adhering to the bottom of the left die and the right die by using a cutter; further, the bottom of the left die and the right die is cleaned by using cleaning bristles on a cleaning plate; after cleaning, the driving motor is rotated by 180 degrees, so that the cleaning plate is rotated to a side far away from the left die and the right die, the electric telescopic plate is completely extended, so that the cutter is far away from the electric telescopic plate, and when subsequent plastic film is extruded and wound from the outlet groove, the electric telescopic rod is controlled to be extended, the cutter is driven to move downward, and the edge of the plastic film is cut by using the cutter.

Description

Technical Field

[0001] This utility model relates to the field of plastic film production technology, specifically to an extrusion die for plastic film production. Background Technology

[0002] Films made of polyvinyl chloride, polyethylene, polypropylene, polystyrene, and other resins are used for packaging and as coating layers. Plastic packaging and plastic packaging products are gaining an increasingly larger market share, especially composite plastic flexible packaging, which is widely used in the food, pharmaceutical, and chemical industries. Food packaging accounts for the largest proportion, including beverage packaging, frozen food packaging, retortable food packaging, and fast food packaging. These products have brought great convenience to people's lives.

[0003] Extrusion dies are required in the production of plastic film. However, during the extrusion process, the die cannot trim the edges of the plastic film, resulting in uneven edges. This leads to loose edges on the film roll during subsequent winding, reducing its aesthetic appeal. Therefore, to solve this problem, we have proposed an extrusion die for plastic film production. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an extrusion die for plastic film production.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An extrusion die for producing plastic film includes a left die and a right die. An installation groove is formed at the center of the top of both the left and right die. A circular insertion hole is formed at the center of the bottom of the inner walls of both installation grooves. An outlet groove is formed at the bottom of both the left and right die. A cleaning component is installed on one side of the right die. The cleaning component includes two support blocks connected to a support rod. Linear motors are fitted at both ends of the support rod. A drive motor is connected to the bottom of the linear motor. An electric telescopic rod is connected to the output end of the drive motor. A connecting sleeve is fixedly fitted at the bottom of the telescopic end of the electric telescopic rod. An electric telescopic plate is connected to the bottom of the connecting sleeve.

[0007] Preferably, one side of the support block is connected to the right mold head, the telescopic end of the electric telescopic plate is connected to a bearing block, and one side of the bearing block is connected to a rotary motor.

[0008] Preferably, the output end of the rotary motor passes through the support block and is connected to a cleaning plate. A cutter is connected to the bottom of the cleaning plate, and several cleaning bristles are installed on the top of the cleaning plate.

[0009] Preferably, a plurality of connecting plates are connected to one side of the right mold head, and a suspension plate is connected to the side of the plurality of connecting plates away from the right mold head. The suspension plate is sleeved on the outside of the two electric telescopic rods.

[0010] Preferably, a movable groove for use with an electric telescopic rod is provided through the center of the top of the suspension plate, and two limiting blocks are sleeved on the outside of the fixed end of the electric telescopic rod.

[0011] Preferably, the two limiting blocks slide in contact with the top and bottom of the suspension plate on opposite sides, respectively, and the outer side of the electric telescopic rod slides in contact with the inner wall of the moving groove.

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

[0013] This invention utilizes a cleaning component and a cutter to scrape away foreign matter adhering to the bottom of the left and right mold heads, facilitating subsequent film extrusion. Further, cleaning brushes on the cleaning plate clean the bottom of the left and right mold heads. After cleaning, the drive motor rotates 180 degrees, causing the cleaning plate to rotate away from the left and right mold heads. The electric telescopic plate extends fully, moving the cutter away from it. As the plastic film is extruded from the outlet groove and wound up, the electric telescopic rod extends, driving the cutter downwards to trim the edges of the plastic film, resulting in neat edges that facilitate subsequent winding and improve the film's aesthetics. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This utility model Figure 1 A bottom view;

[0016] Figure 3 This is a schematic diagram of the cleaning component structure of this utility model;

[0017] Figure 4 This utility model Figure 3 A bottom view.

[0018] In the diagram: 1. Left mold head; 2. Circular insertion hole; 3. Mounting slot; 4. Right mold head; 5. Cleaning component; 51. Cleaning plate; 52. Cutter; 53. Rotary motor; 54. Electric telescopic plate; 55. Connecting sleeve; 56. Electric telescopic rod; 57. Suspension plate; 58. Moving slot; 59. Connecting plate; 510. Limiting block; 511. Drive motor; 512. Bearing block; 513. Support rod; 514. Linear motor; 515. Support block; 6. Outlet slot. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1-4 An extrusion die for producing plastic film includes a left die 1 and a right die 4. An installation groove 3 is provided at the center of the top of both the left die 1 and the right die 4. A circular insertion hole 2 is provided at the center of the bottom of the inner wall of both installation grooves 3. An outlet groove 6 is provided at the bottom of both the left die 1 and the right die 4. A cleaning component 5 is installed on one side of the right die 4. The cleaning component 5 includes two support blocks 515. A support rod 513 is connected between the two support blocks 515. Linear motors 514 are fitted at both ends of the support rod 513. A drive motor 511 is connected to the bottom of the linear motor 514. An electric telescopic rod 56 is connected to the output end of the drive motor 511. A connecting sleeve 55 is fixedly fitted at the bottom of the telescopic end of the electric telescopic rod 56. An electric telescopic plate 54 is connected to the bottom of the connecting sleeve 55.

[0021] As a technical optimization of this utility model, one side of the support block 515 is connected to the right mold head 4, and the telescopic end of the electric telescopic plate 54 is connected to the bearing block 512. One side of the bearing block 512 is connected to the rotary motor 53. The bearing block 512 facilitates the positioning and installation of the rotary motor 53.

[0022] As a technical optimization of this utility model, the output end of the rotary motor 53 passes through the bearing block 512 and is connected to the cleaning plate 51. The bottom of the cleaning plate 51 is connected to the cutter 52, and the top of the cleaning plate 51 is equipped with several cleaning brushes. Through the cooperation of the cleaning plate 51 and the cleaning brushes, the bottom of the left mold head 1 and the right mold head 4 can be cleaned.

[0023] As a technical optimization of this utility model, a number of connecting plates 59 are connected to one side of the right mold head 4, and a suspension plate 57 is connected to the side of the connecting plates 59 away from the right mold head 4. The suspension plate 57 is sleeved on the outside of the two electric telescopic rods 56. The suspension plate 57 can be positioned through the connecting plates 59.

[0024] As a technical optimization of this utility model, a moving groove 58 is provided through the center of the top of the suspension plate 57 to cooperate with the electric telescopic rod 56, and two limiting blocks 510 are sleeved on the outside of the fixed end of the electric telescopic rod 56; the moving groove 58 facilitates the forward and backward movement of the electric telescopic rod 56.

[0025] As a technical optimization of this utility model, the two limiting blocks 510 slide in contact with the top and bottom of the suspension plate 57 on opposite sides, and the outside of the electric telescopic rod 56 slides in contact with the inner wall of the moving groove 58.

[0026] In use, before the extrusion die head operates, the electric telescopic plate 54 is extended by the external control terminal, causing the cleaning plate 51 to move directly below the left die head 1 and the right die head 4. Then, the rotary motor 53 rotates 180 degrees, causing the cutter 52 to move upwards. Next, the electric telescopic rod 56 retracts, driving the cleaning plate 51 and the cutter 52 upwards until the top of the cutter 52 contacts the bottom of the left die head 1 and the right die head 4. Then, the linear motor 514 moves back and forth outside the support rod 513, using the cutter 52 to move the left... The foreign matter attached to the bottom of the die head 1 and the right die head 4 is scraped off, which is beneficial for subsequent film extrusion. After cleaning, the telescopic end of the electric telescopic rod 56 extends, driving the electric telescopic plate 54, the bearing block 512, the cleaning plate 51 and the cutter 52 to move down. Then the rotary motor 53 rotates 180 degrees again, causing the cleaning brush bristles on the cleaning plate 51 to move upward. The electric telescopic rod 56 retracts, causing the cleaning brush bristles to contact the bottom of the left die head 1 and the right die head 4. The bottom of the left die head 1 and the right die head 4 is cleaned by the reciprocating movement of the linear motor 514.

[0027] After cleaning, the drive motor 511 rotates 180 degrees, causing the cleaning plate 51 to rotate to a side away from the left die head 1 and the right die head 4. The electric telescopic plate 54 extends fully, causing the cutter 52 to move away from the electric telescopic plate 54. When the plastic film is subsequently extruded from the outlet groove 6 and rolled up, the electric telescopic rod 56 is extended, driving the cutter 52 to move down. The cutter 52 is used to cut the edges of the plastic film, making the two sides of the plastic film neat, which is conducive to subsequent winding and improves the appearance of the plastic film. Furthermore, by controlling the back and forth movement of the two linear motors 514, the distance between the two cutters 52 is adjusted to facilitate the cutting of plastic film edges of different widths.

[0028] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An extrusion die for producing plastic film, comprising a left die (1) and a right die (4), characterized in that: The center of the top of the left mold head (1) and the center of the top of the right mold head (4) are provided with mounting grooves (3). The center of the bottom of the inner wall of the two mounting grooves (3) is provided with a circular insertion hole (2). The bottom of the left mold head (1) and the right mold head (4) are provided with an outlet groove (6). A cleaning component (5) is installed on one side of the right mold head (4). The cleaning component (5) includes two support blocks (515). A support rod (513) is connected between the two support blocks (515). Linear motors (514) are sleeved on both ends of the support rod (513). A drive motor (511) is connected to the bottom of the linear motor (514). An electric telescopic rod (56) is connected to the output end of the drive motor (511). A connecting sleeve (55) is fixedly sleeved on the bottom of the telescopic end of the electric telescopic rod (56). An electric telescopic plate (54) is connected to the bottom of the connecting sleeve (55).

2. The extrusion die for producing plastic film according to claim 1, characterized in that: One side of the support block (515) is connected to the right mold head (4), and the telescopic end of the electric telescopic plate (54) is connected to the bearing block (512). One side of the bearing block (512) is connected to the rotary motor (53).

3. The extrusion die for producing plastic film according to claim 2, characterized in that: The output end of the rotary motor (53) passes through the support block (512) and is connected to the cleaning plate (51). The bottom of the cleaning plate (51) is connected to the cutter (52), and the top of the cleaning plate (51) is equipped with several cleaning bristles.

4. The extrusion die for producing plastic film according to claim 1, characterized in that: A number of connecting plates (59) are connected to one side of the right mold head (4). The connecting plates (59) are connected to a suspension plate (57) on the side away from the right mold head (4). The suspension plate (57) is sleeved on the outside of the two electric telescopic rods (56).

5. The extrusion die for producing plastic film according to claim 4, characterized in that: The center of the top of the suspension plate (57) is provided with a moving groove (58) for use with the electric telescopic rod (56), and two limiting blocks (510) are sleeved on the outside of the fixed end of the electric telescopic rod (56).

6. The extrusion die for producing plastic film according to claim 5, characterized in that: The two limiting blocks (510) slide in contact with the top and bottom of the suspension plate (57) on opposite sides, and the outside of the electric telescopic rod (56) slides in contact with the inner wall of the moving groove (58).

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