Extrusion die for EPP (Expanded Polypropylene) plate
By introducing detachable and connected pads into the EPP sheet extrusion mold, the problem of existing molds requiring replacement of molds when extruding sheets of different thicknesses is solved, and a more efficient extrusion operation is achieved.
Patent Information
- Application Number
- CN202421942903.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-09
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-08-09
AI Technical Summary
When extruding sheets of different thicknesses, existing EPP sheet extrusion dies need to replace movable dies and fixed dies, resulting in a complicated and time-consuming replacement process, which affects working efficiency.
An EPP sheet extrusion die is designed including a movable die, a fixed die and a removable connected pad. By replacing the pads of different thicknesses, adjusting the spacing between the movable die and the fixed die, changing the specifications of the extrusion space, and adapting to the plates of different thicknesses.
It can adapt to different thicknesses of sheets without disassembling the movable and fixed molds, simplifying the operation process and improving work efficiency.
Smart Images
Figure CN222933184U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of extrusion dies, in particular to an EPP sheet extrusion die. Background Art
[0002] EPP sheets are a kind of lightweight and high-strength sheet materials made from polypropylene particles through foaming and die molding processes. They have the following characteristics and advantages: lightweight and high strength, good energy absorption, good heat insulation and heat preservation, chemical corrosion resistance, recyclability, etc. Due to their excellent properties and diverse application fields, EPP sheets are widely used in automotive parts, sports equipment, packaging, construction, electronics and other fields, becoming an important functional material.
[0003] Currently, when the existing EPP sheet extrusion die extrudes EPP sheets, generally, the movable die and the fixed die are respectively installed on the extrusion molding machine, and then the raw materials placed inside the fixed die are extruded by the movable die. However, since the specifications of the movable die and the fixed die are fixed, when extruding sheets of different thicknesses, it is necessary to replace the movable die and the fixed die installed on the extrusion molding machine. Due to the complex connection between the molding machine and the movable die and the fixed die, and the heavy weights of the movable die and the fixed die, it takes a lot of time to replace the movable die and the fixed die, affecting the work efficiency. Content of the Utility Model
[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and an EPP sheet extrusion die is proposed, including: a movable die, on which an extrusion convex plate is arranged; a fixed die, inside which an extrusion groove is arranged; a backing plate, which is detachably connected to the movable die by bolts, and the backing plate is located between the movable die and the fixed die.
[0005] As a further description of the above technical solution: cooling pipes are arranged inside both the movable die and the fixed die, and a liquid inlet is arranged at the end of the cooling pipe.
[0006] As a further description of the above technical solution: a plurality of threaded holes are formed in the backing plate.
[0007] As a further description of the above technical solution: a hanging hole is arranged on one side of the backing plate.
[0008] As a further description of the above technical solution: reinforcing plates are arranged on both the movable die and the fixed die, and there are a plurality of reinforcing plates.
[0009] As a further description of the above technical solution: mounting plates are arranged on the sides of both the movable die and the fixed die.
[0010] As a further description of the above technical solution: An extrusion space is formed between the extrusion convex plate and the extrusion groove.
[0011] The above technical solution has the following advantages or beneficial effects:
[0012] In the present utility model, the backing plate is detachably connected to the movable die. By replacing backing plates with different thicknesses, the distance between the movable die and the fixed die is changed, and the specifications of the extrusion space are adjusted, facilitating the extrusion of plates with different thicknesses. There is no need to disassemble the movable die and the fixed die. It is only necessary to disassemble and replace the backing plates with different thicknesses, which is simple to operate and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic structural view of an extrusion die in an embodiment of the present utility model;
[0014] Figure 2 It is a cross-sectional view of an extrusion die in an embodiment of the present utility model;
[0015] Figure 3 It is Figure 1 a schematic structural view of the backing plate in the extrusion die;
[0016] Figure 4 It is Figure 1 a partially enlarged view of part A in the extrusion die.
[0017] Legend Explanation:
[0018] 1. Movable die; 2. Extrusion convex plate; 3. Fixed die; 4. Extrusion groove; 5. Backing plate; 6. Cooling pipe; 7. Liquid inlet; 8. Threaded hole; 9. Hanging hole; 10. Reinforcement plate; 11. Mounting plate; 12. Extrusion space. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "vertical", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.
[0021] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "arrange", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0022] Please refer to Figures 1-4 , the present utility model provides a technical solution: An EPP sheet extrusion die of the present utility model includes: a movable die 1, on which an extrusion convex plate 2 is arranged; a fixed die 3, inside which an extrusion groove 4 is arranged; a backing plate 5, which is detachably connected to the movable die 1 by bolts, the backing plate 5 is located between the movable die 1 and the fixed die 3, and an extrusion space 12 is formed between the extrusion convex plate 2 and the extrusion groove 4.
[0023] In this embodiment, by placing the raw material in the extrusion groove 4 and controlling the movement of the extrusion convex plate 2 on the movable die 1, the raw material in the extrusion groove 4 is extruded. Since the backing plate 5 is detachably connected to the movable die 1, by replacing the backing plates 5 with different thicknesses, the distance between the movable die 1 and the fixed die 3 can be changed, and the specifications of the extrusion space 12 can be adjusted, which is convenient for extruding sheets with different thicknesses. There is no need to disassemble the movable die 1 and the fixed die 3, and it is only necessary to disassemble and replace the backing plates 5 with different thicknesses. The operation is simple and the work efficiency is improved.
[0024] As Figure 1 and Figure 2 shown, specifically, cooling pipes 6 are arranged inside both the movable die 1 and the fixed die 3, and liquid inlets 7 are arranged at the ends of the cooling pipes 6; through the cooling pipes 6, circulating cooling water or other cooling media can be passed through to effectively adjust and control the temperature inside the die. During the extrusion process, through the cooling pipes 6, it is possible to avoid material deformation or die damage caused by overheating of the die, and maintain the stability and consistency of the extruded products.
[0025] As Figure 1 and Figure 3 shown, specifically, a plurality of threaded holes 8 are provided on the backing plate 5; through the threaded holes 8, it is convenient to install and disassemble the backing plate 5 on the movable die 1.
[0026] As Figure 1 and Figure 2 shown, specifically, a hanging hole 9 is arranged on one side of the backing plate 5; through the hanging hole 9 provided on the backing plate 5, it is convenient to hang the backing plate 5, which is convenient for storing the backing plate 5.
[0027] As Figure 1 and Figure 4As shown, specifically, reinforcing plates 10 are provided on both the movable die 1 and the fixed die 3, and there are multiple reinforcing plates 10. The overall rigidity and durability of the die can be effectively increased through the reinforcing plates 10, reducing the damage and deformation of the die caused by vibration and stress generated during the extrusion process. The reinforcing plates 10 can effectively disperse and reduce the concentrated stress points when the die is stressed, thereby extending the service life of the die and reducing the damage caused by fatigue or stress concentration.
[0028] As Figure 1 and Figure 4 shown, specifically, mounting plates 11 are provided on the sides of both the movable die 1 and the fixed die 3. The movable die 1 and the fixed die 3 can be respectively mounted on the extruder through the mounting plates 11.
[0029] Working principle: The staff places the raw material in the extrusion groove 4, controls the movement of the extrusion convex plate 2 on the movable die 1 to extrude the raw material in the extrusion groove 4. The backing plate 5 is detachably connected to the movable die 1. By replacing the backing plates 5 with different thicknesses, the distance between the movable die 1 and the fixed die 3 is changed, and the specification of the extrusion space 12 is adjusted, facilitating the extrusion of plates with different thicknesses. There is no need to disassemble the movable die 1 and the fixed die 3, and only the backing plates 5 with different thicknesses need to be disassembled and replaced, which is simple to operate and improves work efficiency.
[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.
[0031] 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 limit the present utility model to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the present utility model, so that those skilled in the art in the relevant technical field can understand and utilize the present utility model well. The present utility model is only limited by the claims and their full scope and equivalents.
Claims
1. An EPP sheet extrusion die, characterized in that: include: A movable die (1), wherein the movable die (1) is provided with an extrusion convex plate (2); A fixed die (3), wherein an extrusion groove (4) is arranged inside the fixed die (3); A backing plate (5), the backing plate (5) is detachably connected to the movable mold (1) via bolts, and the backing plate (5) is located between the movable mold (1) and the fixed mold (3).
2. The EPP sheet extrusion die according to claim 1, characterized in that: The movable mold (1) and the fixed mold (3) are both provided with cooling pipes (6) inside, and the ends of the cooling pipes (6) are provided with liquid inlets (7).
3. The EPP sheet extrusion die according to claim 1, characterized in that: The backing plate (5) is provided with a plurality of threaded holes (8).
4. The EPP sheet extrusion die according to claim 1, characterized in that: A hanging hole (9) is provided on one side of the pad (5).
5. The EPP sheet extrusion die according to claim 1, characterized in that: The movable mold (1) and the fixed mold (3) are both provided with a reinforcement plate (10), and a plurality of the reinforcement plates (10) are provided.
6. The EPP sheet extrusion die according to claim 1, characterized in that: The sides of the movable mold (1) and the fixed mold (3) are both provided with mounting plates (11).
7. The EPP sheet extrusion die according to claim 1, characterized in that: An extrusion space (12) is formed between the extrusion convex plate (2) and the extrusion groove (4).