Extrusion die based on PBAT material

Abstract

The utility model discloses an extrusion die based on PBAT (poly (butylene adipate-co-terephthalate)) materials, which comprises a mounting die holder and an extrusion die head, and a connecting flange is fixedly mounted at the rear end of the mounting die holder; a connecting ring is fixedly mounted at the front end of the mounting die holder, a positioning groove is formed in the front end of the connecting ring, a positioning boss is arranged at the rear end of the extrusion die head, a fixed ring is fixedly mounted at the lower end of the connecting ring, a limiting convex ring is fixedly mounted at the upper end of the connecting ring, and a movable ring is movably connected to the upper end of the limiting convex ring in an attached mode. First limiting sliding rods are fixedly installed on the two sides of the rear end of the fixed ring, a connecting spring is fixedly installed at the rear end of the fixed ring, an electric telescopic rod is fixedly installed in the middle of the movable ring and the middle of the fixed ring in a penetrating mode, and an extrusion base used for conducting extrusion positioning on the extrusion die head is fixedly installed on the telescopic part of the front end of the electric telescopic rod. Second limiting sliding rods are fixedly installed on the two sides of the extrusion base in a supported mode. According to the utility model, the extrusion die head is convenient to disassemble and replace.

Description

Technical Field

[0001] This utility model relates to the field of plastic extrusion die technology, specifically an extrusion die based on PBAT material. Background Technology

[0002] Biodegradable plastics refer to plastics that, under specific conditions such as in nature, composting, anaerobic digestion, and aqueous culture media, are degraded by naturally occurring microorganisms, ultimately degrading completely into carbon dioxide or methane, as well as mineralized inorganic salts and new biomass. The main uses of biodegradable plastics include:

[0003] Environmental friendliness: The raw materials for biodegradable plastics are typically derived from renewable resources, such as plant starch and cellulose, which helps reduce dependence on finite fossil resources. Reduction of white pollution: Traditional plastics are difficult to degrade in the natural environment, and long-term accumulation can damage soil, water sources, and ecosystems. The widespread use of biodegradable plastics can effectively reduce this white pollution phenomenon. Improved resource utilization: The raw materials for biodegradable plastics are renewable, and their decomposition products can return to the natural environment, forming a circular economy. This helps improve the overall utilization rate of resources and promotes sustainable development. Promoting green consumption: The promotion and application of biodegradable plastics helps guide consumers to choose more environmentally friendly products, thereby promoting the popularization and practice of green consumption concepts.

[0004] However, with increasing environmental awareness, biodegradable plastics such as PBAT (polyethylene terephthalate-co-caprolactone) have been widely used in practical applications. PBAT materials possess excellent biodegradability and mechanical properties, making them suitable for manufacturing various packaging materials, agricultural films, etc. However, mold disassembly and replacement is a crucial step in the processing of PBAT materials. Traditional molds often involve cumbersome disassembly, thus affecting the processing efficiency of biodegradable plastics. Utility Model Content

[0005] The purpose of this invention is to provide an extrusion die based on PBAT material, in order to solve the problem mentioned in the background art that the disassembly and replacement of the die is an important part of the PBAT material processing process. Traditional dies often have the problem of being cumbersome to disassemble, which affects the processing efficiency of biodegradable plastics.

[0006] To achieve the above objectives, this utility model provides the following technical solution: it includes a mounting mold base and an extrusion die head, wherein a connecting flange is fixedly installed at the rear end of the mounting mold base;

[0007] A connecting ring is fixedly installed at the front end of the mounting mold base. A positioning groove is provided at the front end of the connecting ring. A positioning boss is provided at the rear end of the extrusion die head. A fixing ring is fixedly installed at the lower end of the connecting ring. A limiting protrusion is fixedly installed at the upper end of the connecting ring. A movable ring is movably connected to the upper end of the limiting protrusion. A first limiting slide rod is fixedly installed on both sides of the rear end of the fixing ring. A connecting spring is fixedly installed at the rear end of the fixing ring. An electric telescopic rod is fixedly installed through the middle of the movable ring and the fixing ring. An extrusion seat for extruding and positioning the extrusion die head is fixedly installed at the telescopic part of the front end of the electric telescopic rod. A second limiting slide rod is fixedly installed on both sides of the extrusion seat.

[0008] Preferably, a power control box is fixedly installed on the side of the mounting mold base.

[0009] Preferably, there are several positioning grooves, which are symmetrically distributed around the front end of the connecting ring.

[0010] Preferably, the rear end of the positioning boss fits into the inner wall of the positioning groove, and sealing rings are respectively bonded to the front end of the mounting mold base and the rear end of the extrusion mold head at the joint.

[0011] Preferably, a handle is fixedly installed at the top of the movable ring, and there are two first limiting slide rods, which are symmetrically distributed on both sides of the rear end of the fixed ring. The upper end of the first limiting slide rod is connected to both sides of the rear end of the movable ring through and fits.

[0012] Preferably, the upper end of the connecting spring is fixedly installed at the rear end of the movable ring.

[0013] Preferably, the rear end of the second limiting slide bar is connected to the outside of the moving ring and the fixed ring through and fits together.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] When the mounting mold base is fixedly connected to the front outlet of the plastic extruder, the electric telescopic rod is retracted by controlling the opening. When the electric telescopic rod retracts, it will drive the extrusion seat to move backward in a straight line. When the extrusion seat moves backward in a straight line, it will drive the extrusion die head to move backward in a straight line. When the extrusion die head moves backward in a straight line, it will drive the rear end of the positioning boss to engage with the inner wall of the positioning groove, so that the extrusion die head remains fixedly connected at the front end of the extrusion die head.

[0016] This invention also features a mechanism where, when the electric telescopic rod extends, it causes the extrusion seat to move forward in a straight line. As the extrusion seat moves forward, it releases the pressure on the extrusion die. When the pressure on the extrusion die is released, the moving ring can be pulled upward by the handle. When the moving ring is pulled upward, it simultaneously causes the extrusion seat to move upward in a straight line. As the extrusion seat moves upward, it opens the space at the top of the extrusion die. When the space at the top of the extrusion die is opened, the extrusion die can be removed from the front end of the mounting base by pulling the extrusion die forward, thus facilitating the removal and replacement of the extrusion die. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an extrusion die based on PBAT material according to this utility model. Figure 1 ;

[0018] Figure 2 This is a schematic diagram of the overall structure of an extrusion die based on PBAT material according to this utility model. Figure 2 ;

[0019] Figure 3 This is a cross-sectional schematic diagram of the overall structure of an extrusion die based on PBAT material according to this utility model.

[0020] In the diagram: 1. Mounting mold base; 2. Extrusion die head; 3. Connecting flange; 4. Power control box; 5. Connecting ring; 6. Positioning groove; 7. Positioning boss; 8. Fixing ring; 9. Limiting protrusion; 10. Moving ring; 11. Handle; 12. First limiting slide bar; 13. Connecting spring; 14. Electric telescopic rod; 15. Extrusion seat; 16. Second limiting slide bar. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-3 This utility model provides a technical solution for an extrusion die based on PBAT material: including a mounting die base 1 and an extrusion die head 2. A connecting flange 3 is fixedly installed at the rear end of the mounting die base 1, so that the mounting die base 1 is fixedly connected to the front outlet of the plastic extruder through the connecting flange 3 and connecting bolts. A power control box 4 is fixedly installed on the side end of the mounting die base 1.

[0023] A connecting ring 5 is fixedly installed at the front end of the mounting mold base 1. The front end of the connecting ring 5 has a positioning groove 6, and there are several positioning grooves 6, symmetrically distributed around the front end of the connecting ring 5. A positioning boss 7 is provided at the rear end of the extrusion die head 2, and the rear end of the positioning boss 7 fits into the inner wall of the positioning groove 6. Sealing rings are bonded to the joints between the front end of the mounting mold base 1 and the rear end of the extrusion die head 2. A fixing ring 8 is fixedly installed at the lower end of the connecting ring 5. A limiting protrusion ring 9 is fixedly installed at the upper end of the connecting ring 5. A movable ring 10 is movably connected to the upper end of the limiting protrusion ring 9. A handle 11 is fixedly installed at the top of the movable ring 10. Two first limiting slide rods 12 are fixedly installed on both sides of the rear end of the fixing ring 8, symmetrically distributed around the rear end of the fixing ring 8. A limiting slide bar 12 is connected to both sides of the rear end of the moving ring 10 through its upper end. A connecting spring 13 is fixedly installed at the rear end of the fixed ring 8, and the upper end of the connecting spring 13 is fixedly installed at the rear end of the moving ring 10, so that the moving ring 10 is linearly limited by the connecting spring 13 in conjunction with the first limiting slide bar 12. An electric telescopic rod 14 is fixedly installed through the middle of the moving ring 10 and the fixed ring 8. An extrusion seat 15 for extruding and positioning the extrusion die head 2 is fixedly installed at the front telescopic part of the electric telescopic rod 14. A second limiting slide bar 16 is fixedly installed on both sides of the extrusion seat 15, and the rear end of the second limiting slide bar 16 is connected to the outside of the moving ring 10 and the fixed ring 8 through its upper end, so that the extrusion seat 15 is linearly limited by the second limiting slide bar 16.

[0024] Working principle: In use, this utility model uses the connecting flange 3 and connecting bolts to fix the mounting mold base 1 to the front outlet of the plastic extruder. When the mounting mold base 1 is fixedly connected to the front outlet of the plastic extruder, the electric telescopic rod 14 is retracted by controlling the opening. When the electric telescopic rod 14 retracts, it will drive the extrusion seat 15 to move backward in a straight line. When the extrusion seat 15 moves backward in a straight line, it will drive the extrusion die head 2 to move backward in a straight line. When the extrusion die head 2 moves backward in a straight line, it will drive the rear end of the positioning boss 7 to fit into the inner wall of the positioning groove 6, so that the extrusion die head 2 remains fixedly connected at the front end of the extrusion die head 2.

[0025] When it is necessary to disassemble the extrusion die 2, the electric telescopic rod 14 is extended by controlling the extension. When the electric telescopic rod 14 extends, it will drive the extrusion seat 15 to move forward in a straight line. When the extrusion seat 15 moves forward in a straight line, it will release the pressure on the extrusion die 2. When the pressure on the extrusion die 2 is released, the moving ring 10 is pulled upward by the handle 11. When the moving ring 10 is pulled upward, it will simultaneously drive the extrusion seat 15 to move upward in a straight line. When the extrusion seat 15 moves upward in a straight line, it will open the upper space of the extrusion die 2. When the upper space of the extrusion die 2 is opened, the extrusion die 2 can be disassembled from the front end of the mounting die 1 by pulling the extrusion die 2 forward, thereby facilitating the disassembly and replacement of the extrusion die 2.

[0026] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0027] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An extrusion die based on PBAT material, characterized in that: It includes a mounting mold base (1) and an extrusion die head (2), wherein a connecting flange (3) is fixedly installed at the rear end of the mounting mold base (1); A connecting ring (5) is fixedly installed at the front end of the mounting mold base (1). A positioning groove (6) is provided at the front end of the connecting ring (5). A positioning boss (7) is provided at the rear end of the extrusion die (2). A fixing ring (8) is fixedly installed at the lower end of the connecting ring (5). A limiting protrusion (9) is fixedly installed at the upper end of the connecting ring (5). A moving ring (10) is movably connected to the upper end of the limiting protrusion (9). A first limiting slide rod (12) is fixedly installed on both sides of the rear end of the fixing ring (8). A connecting spring (13) is fixedly installed at the rear end of the fixing ring (8). An electric telescopic rod (14) is fixedly installed through the middle of the moving ring (10) and the fixing ring (8). An extrusion seat (15) for extruding and positioning the extrusion die (2) is fixedly installed at the telescopic part at the front end of the electric telescopic rod (14). A second limiting slide rod (16) is fixedly installed on both sides of the extrusion seat (15).

2. The extrusion die based on PBAT material according to claim 1, characterized in that: A power control box (4) is fixedly installed on the side of the mounting base (1).

3. An extrusion die based on PBAT material according to claim 2, characterized in that: There are several positioning grooves (6), which are symmetrically distributed around the front end of the connecting ring (5).

4. An extrusion die based on PBAT material according to claim 3, characterized in that: The rear end of the positioning boss (7) fits into the inner wall of the positioning groove (6), and sealing rings are respectively bonded to the front end of the mounting mold base (1) and the rear end of the extrusion die (2) at the joint.

5. An extrusion die based on PBAT material according to claim 4, characterized in that: A handle (11) is fixedly installed at the top of the movable ring (10). There are two first limiting slide rods (12), which are symmetrically distributed on both sides of the rear end of the fixed ring (8). The upper end of the first limiting slide rod (12) is connected to both sides of the rear end of the movable ring (10) through and fits.

6. An extrusion die based on PBAT material according to claim 5, characterized in that: The upper end of the connecting spring (13) is fixedly installed at the rear end of the moving ring (10).

7. An extrusion die based on PBAT material according to claim 6, characterized in that: The rear end of the second limiting slide bar (16) is connected to the outside of the moving ring (10) and the fixed ring (8) through and fits together.

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