Extrusion device for manufacturing biodegradable film

Abstract

The utility model discloses an extrusion device for manufacturing a biodegradable film, which belongs to the technical field of biodegradable film preparation equipment and comprises a fixing plate, fixing bolts are arranged at four corners of a fixing surface of the fixing plate, three supporting plates are uniformly arranged on an equipment surface of the fixing plate, a feeding hopper is arranged on the uppermost supporting plate, and a discharging hopper is arranged on the uppermost supporting plate. A motor supporting rod is arranged above the feeding hopper, a small driving motor is arranged at the tail end of the motor supporting rod, the output end of the small driving motor is connected with a stirring rod, the stirring rod extends into the feeding hopper, a feeding pipe is connected to the lower portion of the feeding hopper, and the other end of the feeding pipe is connected into the extrusion cylinder. A large driving motor is arranged above the extrusion barrel, an extrusion opening and an extrusion nozzle are arranged below the extrusion barrel, the device is mainly used for manufacturing biodegradable films, raw materials can be filtered, continuous stirring is conducted in the raw material heating process, uneven heating is prevented, and degradable materials in different shapes can be extruded according to product requirements.

Description

Technical Field

[0001] The utility model relates to an extrusion device for manufacturing biodegradable films, belonging to the technical field of biodegradable film preparation equipment. Background Art

[0002] As the global awareness of environmental protection increases, biodegradable materials, as an environmentally friendly and renewable new material, are receiving widespread attention and application. As one of the important products, biodegradable film has broad application prospects in packaging, agricultural covering, medical and health care and other fields due to its natural degradation, pollution-free and recyclable characteristics. However, in the production process of biodegradable film, the extrusion molding process, as its core manufacturing step, plays a decisive role in the performance and quality of the product. There are many problems in the traditional extrusion device when manufacturing biodegradable film, such as low extrusion efficiency, uneven film thickness, high energy consumption, easy to generate waste, etc. At present, a Chinese patent with patent announcement number CN214136982U discloses a manufacturing device for soluble fully biodegradable film, which can realize the heating and filtering of raw material solution, but ignores the problem of uneven heating of raw material solution in the melting chamber, and the problem that the extrusion shape of the degradable material cannot be selected during extrusion, and the horizontal extrusion cylinder will lead to insufficient utilization of raw material solution. Utility Model Content

[0003] The purpose of the utility model is to provide an extrusion device for the manufacture of biodegradable films in order to solve the above problems, which can select the extrusion shape of the degradable material according to production needs, make the raw material solution more uniform in the melting chamber, and the vertical extrusion cylinder can make full use of the raw material solution.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme: an extrusion device for manufacturing biodegradable films, comprising a fixed plate, fixing bolts are arranged at the four corners of the fixing surface of the fixed plate, three support plates are evenly arranged on the equipment surface of the fixed plate, a feed hopper is arranged on the top support plate, and the supporting parts of the three support plates are connected to an extrusion cylinder, a motor support rod is arranged above the feed hopper, a small driving motor is arranged at the end of the motor support rod, a stirring rod is connected to the output end of the small driving motor, and the stirring rod extends into the feed hopper, a feed pipe is connected below the feed hopper, and the other end of the feed pipe is connected to the inside of the extrusion cylinder, a large drive motor is arranged above the extrusion cylinder, and an extrusion port and an extrusion nozzle are arranged below the extrusion cylinder.

[0005] Preferably, in order to filter the raw material solution, a filter screen is provided at the bottom of the feed hopper, and two transverse small stirring rods are provided on the stirring rod, and the rotation of the stirring rod is driven by the small driving motor.

[0006] Preferably, in order to extrude and transport the raw material solution, an extrusion screw is provided inside the extrusion barrel, the top of the extrusion screw is connected to the output end of the large drive motor, and the rotation of the extrusion screw is driven by the large drive motor.

[0007] Preferably, in order to divide the extrusion barrel into multiple chambers, a top plate is arranged above the uppermost support plate, the extrusion screw passes through the middle of the top plate, and the first partition plate, the second partition plate, the third partition plate and the fourth partition plate are evenly arranged on the extrusion screw.

[0008] Preferably, in order to heat the raw material solutions in each chamber more evenly, a first melting chamber is formed between the top plate and the first partition plate, and two transverse stirring short rods are provided on the extrusion screw in the first melting chamber; a second melting chamber is formed between the first partition plate and the second partition plate, and two transverse stirring short rods are provided on the extrusion screw in the second melting chamber; a third melting chamber is formed between the second partition plate and the third partition plate, and two transverse stirring short rods are provided on the extrusion screw in the third melting chamber; a fourth melting chamber is formed between the third partition plate and the fourth partition plate, and two transverse stirring short rods are provided on the extrusion screw in the fourth melting chamber.

[0009] Preferably, in order to increase the pressure on the raw material solution at the end of the extrusion cylinder, the lower part of the extrusion cylinder is funnel-shaped, an extrusion port is provided at the bottom of the funnel-shaped part of the extrusion cylinder, a thread is provided on the outer surface of the extrusion port, the end of the extrusion screw extends to the extrusion port, an extrusion nozzle is provided below the extrusion port, and the extrusion port is threadedly connected to the extrusion nozzle.

[0010] Preferably, in order to make it easier for the raw material solution to form a desired shape during extrusion, a fifth melting chamber is formed between the fourth partition and the extrusion port, and a short horizontal stirring rod is provided on the extrusion screw in the fifth melting chamber.

[0011] Preferably, in order to gradually heat up the raw material solution in different chambers, the temperature of the first melting chamber is 80-100°C, the temperature of the second melting chamber is 100-130°C, the temperature of the third melting chamber is 130-150°C, the temperature of the fourth melting chamber is 150-170°C, and the temperature of the fifth melting chamber is 170-185°C.

[0012] The beneficial effects of the utility model are: the utility model can filter the raw materials and can also continuously stir the raw materials during heating in the melting chamber, so that the raw material solution is heated more evenly in the melting chamber, and the extrusion shape of the degradable material can be selected according to production needs, and the vertical extrusion cylinder can make full use of the raw material solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 It is a side structural schematic diagram of the utility model.

[0015] Figure 3 It is a schematic diagram of the structure of removing the extrusion cylinder of the utility model.

[0016] Figure 4 It is a structural schematic diagram of the feeding hopper of the utility model.

[0017] Figure 5 It is a schematic diagram of the structure of point A of the present utility model.

[0018] In the figure: 1. fixing plate; 2. fixing bolt; 3. support plate; 4. motor support rod; 5. small drive motor; 6. stirring rod; 7. feed hopper; 8. feed pipe; 9. large drive motor; 10. extrusion barrel; 11. extrusion port; 12. extrusion nozzle; 13. top plate; 14. first partition; 15. second partition; 16. third partition; 17. fourth partition; 18. extrusion screw; 19. stirring short rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-Figure 5 As shown, an extrusion device for manufacturing biodegradable films includes a fixed plate 1, and fixing bolts 2 are arranged at the four corners of the fixed surface of the fixed plate 1. Three support plates 3 are evenly arranged on the equipment surface of the fixed plate 1, and a feed hopper 7 is arranged on the uppermost support plate 3. The supporting parts of the three support plates 3 are connected to an extrusion cylinder 10. A motor support rod 4 is arranged above the feed hopper 7, and a small drive motor 5 is arranged at the end of the motor support rod 4. The output end of the small drive motor 5 is connected to a stirring rod 6, and the stirring rod 6 extends into the feed hopper 7. A feed pipe 8 is connected below the feed hopper 7, and the other end of the feed pipe 8 is connected to the inside of the extrusion cylinder 10. A large drive motor 9 is arranged above the extrusion cylinder 10, and an extrusion port 11 and an extrusion nozzle 12 are arranged below the extrusion cylinder 10.

[0021] like Figure 4As shown, a filter screen is provided at the bottom of the feed hopper 7, and two transverse small stirring rods are provided on the stirring rod 6. The rotation of the stirring rod 6 is driven by a small driving motor 5, so that the raw material solution can be filtered.

[0022] like Figure 3 As shown, an extrusion screw 18 is disposed inside the extrusion barrel 10 , and the top of the extrusion screw 18 is connected to the output end of the large drive motor 9 . The rotation of the extrusion screw 18 is driven by the large drive motor 9 , and the extrusion screw 18 can extrude and transport the raw material solution.

[0023] like Figure 3 As shown, a top plate 13 is arranged above the uppermost support plate 3, and an extrusion screw 18 passes through the middle of the top plate 13. A first partition 14, a second partition 15, a third partition 16 and a fourth partition 17 are evenly arranged on the extrusion screw 18. The partitions can divide the extrusion barrel 10 into multiple chambers.

[0024] like Figure 3 As shown, a first melting chamber is formed between the top plate 13 and the first partition plate 14, and two transverse stirring short rods 19 are arranged on the extrusion screw 18 in the first melting chamber; a second melting chamber is formed between the first partition plate 14 and the second partition plate 15, and two transverse stirring short rods 19 are arranged on the extrusion screw 18 in the second melting chamber; a third melting chamber is formed between the second partition plate 15 and the third partition plate 16, and two transverse stirring short rods 19 are arranged on the extrusion screw 18 in the third melting chamber; a fourth melting chamber is formed between the third partition plate 16 and the fourth partition plate 17, and two transverse stirring short rods 19 are arranged on the extrusion screw 18 in the fourth melting chamber. The stirring short rods 19 can stir the raw material solutions in different chambers to make them heated more evenly.

[0025] like Figure 5 As shown, the lower part of the extrusion barrel 10 is funnel-shaped, and an extrusion port 11 is provided at the bottom of the funnel-shaped part of the extrusion barrel 10. The outer surface of the extrusion port 11 is provided with a thread. The end of the extrusion screw 18 extends to the extrusion port 11, and an extrusion nozzle 12 is provided below the extrusion port 11. The extrusion port 11 is threadedly connected to the extrusion nozzle 12. The funnel shape can concentrate the raw material solution more and make the raw material solution at the end under greater pressure.

[0026] like Figure 5 As shown, a fifth melting chamber is formed between the fourth partition plate 17 and the extrusion port 11, and a transverse stirring short rod 19 is provided on the extrusion screw 18 in the fifth melting chamber, so that the raw material solution can be more easily formed into a desired shape during extrusion.

[0027] like Figure 3As shown, the temperature of the first melting chamber is 80-100°C, the temperature of the second melting chamber is 100-130°C, the temperature of the third melting chamber is 130-150°C, the temperature of the fourth melting chamber is 150-170°C, and the temperature of the fifth melting chamber is 170-185°C. The chambers with gradually increasing temperatures can gradually heat the raw material solution to facilitate molding.

[0028] When the utility model is in use, the staff fixes the equipment vertically on the wall and turns on the power supply. At this time, the small driving motor 5 drives the stirring rod 6 to rotate. At this time, the raw materials are added into the hopper 7. The filtered raw materials enter the first melting chamber of the extrusion cylinder 10 through the feeding pipe 8. At the same time, the large driving motor 9 drives the extrusion screw 18 to rotate, and the stirring short rod 19 is stirred. Then the raw materials are transported to the second melting chamber, the third melting chamber, the fourth melting chamber and the fifth melting chamber in turn, and finally the degradable materials are extruded by the extrusion nozzle 12. The workers can replace the extrusion nozzle 12 according to the product needs to extrude degradable materials of different shapes.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An extrusion device for manufacturing biodegradable films, comprising a fixed plate (1), wherein fixing bolts (2) are arranged at four corners of the fixed surface of the fixed plate (1), three support plates (3) are evenly arranged on the equipment surface of the fixed plate (1), a feed hopper (7) is arranged on the top support plate (3), and the supporting parts of the three support plates (3) are connected to an extrusion cylinder (10), characterized in that: A motor support rod (4) is arranged above the feed hopper (7), a small drive motor (5) is arranged at the end of the motor support rod (4), an output end of the small drive motor (5) is connected to a stirring rod (6), the stirring rod (6) extends into the feed hopper (7), a feed pipe (8) is connected below the feed hopper (7), the other end of the feed pipe (8) is connected to the inside of the extrusion cylinder (10), a large drive motor (9) is arranged above the extrusion cylinder (10), and an extrusion port (11) and an extrusion nozzle (12) are arranged below the extrusion cylinder (10).

2. The extrusion device for producing biodegradable films according to claim 1, characterized in that: A filter screen is arranged at the bottom of the feed hopper (7), and two transverse small stirring rods are arranged on the stirring rod (6). The rotation of the stirring rod (6) is driven by the small driving motor (5).

3. The extrusion device for producing biodegradable films according to claim 1, characterized in that: An extrusion screw (18) is arranged inside the extrusion cylinder (10), and the top of the extrusion screw (18) is connected to the output end of the large drive motor (9), and the rotation of the extrusion screw (18) is driven by the large drive motor (9).

4. The extrusion device for producing biodegradable films according to claim 3, characterized in that: A top plate (13) is arranged above the uppermost support plate (3), the extrusion screw (18) passes through the middle of the top plate (13), and a first partition plate (14), a second partition plate (15), a third partition plate (16) and a fourth partition plate (17) are evenly arranged on the extrusion screw (18).

5. The extrusion device for producing biodegradable films according to claim 4, characterized in that: A first melting chamber is formed between the top plate (13) and the first partition plate (14), and two transverse stirring short rods (19) are arranged on the extrusion screw (18) in the first melting chamber; a second melting chamber is formed between the first partition plate (14) and the second partition plate (15), and two transverse stirring short rods (19) are arranged on the extrusion screw (18) in the second melting chamber; a third melting chamber is formed between the second partition plate (15) and the third partition plate (16), and two transverse stirring short rods (19) are arranged on the extrusion screw (18) in the third melting chamber; a fourth melting chamber is formed between the third partition plate (16) and the fourth partition plate (17), and two transverse stirring short rods (19) are arranged on the extrusion screw (18) in the fourth melting chamber.

6. The extrusion device for producing biodegradable films according to claim 5, characterized in that: The lower part of the extrusion cylinder (10) is funnel-shaped, and an extrusion port (11) is arranged at the bottom of the funnel-shaped part of the extrusion cylinder (10). The outer surface of the extrusion port (11) is provided with a thread. The end of the extrusion screw (18) extends to the extrusion port (11), and an extrusion nozzle (12) is arranged below the extrusion port (11). The extrusion port (11) is threadedly connected to the extrusion nozzle (12).

7. The extrusion device for producing biodegradable films according to claim 6, characterized in that: A fifth melting chamber is formed between the fourth partition plate (17) and the extrusion port (11), and a short horizontal stirring rod (19) is arranged on the extrusion screw (18) in the fifth melting chamber.

8. The extrusion device for producing biodegradable films according to claim 7, characterized in that: The temperature of the first melting chamber is 80-100°C, the temperature of the second melting chamber is 100-130°C, the temperature of the third melting chamber is 130-150°C, the temperature of the fourth melting chamber is 150-170°C, and the temperature of the fifth melting chamber is 170-185°C.

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