High-temperature and high-pressure foaming forming production device for eva plastic particles

Abstract

The utility model discloses an eva plastic particle high-temperature and high-pressure foaming forming production device, which belongs to the technical field of plastic particle foaming and comprises a mounting table, a mixing tank, a feeding pipe, an extrusion barrel, an auxiliary cleaning component and a plastic particle mixing component, the extrusion barrel is fixedly mounted at the upper part of the mounting table, the mixing tank is arranged at the upper part of the extrusion barrel, and the feeding pipe is arranged at the lower part of the plastic particle mixing component. A feeding port is formed in the top of the feeding pipe, the feeding pipe is fixedly installed in the feeding port, a circular ring is fixedly installed on the side wall of the extrusion barrel, the auxiliary cleaning assembly is arranged, the outer portion of the extrusion screw rod is opened in a moving mode, a user can conveniently clean external impurities, and therefore the problem that due to the fact that the extrusion screw rod is usually installed in equipment in a closed mode, the extrusion screw rod is damaged is solved. The problems that a part of materials may remain outside a screw rod in the fusing propelling process, so that impurities are difficult to remove, and as time goes on, new and old materials may be mixed, so that the quality of the materials is affected are solved.

Description

Technical Field

[0001] This utility model relates to a high-temperature and high-pressure foaming molding production device for EVA plastic granules, belonging to the field of plastic granule foaming technology. Background Technology

[0002] Plastic granule foaming technology, a core process in the plastics processing industry, significantly controls the density, hardness, sound absorption, and thermal insulation properties of materials by forming micro-bubble structures within the plastic granules. It plays a crucial role in areas such as automotive interior cushioning, building wall insulation, and precision product packaging protection. Currently, mainstream foaming equipment typically integrates a heating system, injection screw, expanding agent injection system, foaming mold, and pneumatic system, utilizing the rotation of the extrusion screw to achieve material melting, mixing, and propulsion.

[0003] However, existing equipment suffers from significant technical bottlenecks: during continuous operation, molten material easily adheres to the outer wall of the extrusion screw, forming stubborn residues. As the production cycle lengthens, these residual impurities are not only difficult to remove effectively, but also mix with newly injected raw materials, leading to an imbalance in the material formulation ratio, decreased plasticizing performance, and ultimately quality problems such as uneven product density and reduced mechanical properties. This severely restricts the yield and production efficiency of foamed products. Therefore, there is an urgent need to develop a high-temperature, high-pressure foaming molding production device for EVA plastic granules that can effectively avoid material residues and achieve precise plasticization. Utility Model Content

[0004] The purpose of this invention is to provide a high-temperature and high-pressure foaming molding production device for EVA plastic granules in order to solve the above problems. The auxiliary cleaning component can clean the outside of the extrusion screw to reduce the material impurities remaining on the outside of the extrusion screw.

[0005] This utility model achieves the above-mentioned objectives through the following technical solution: a high-temperature and high-pressure foaming molding production device for EVA plastic granules, including an installation platform, a mixing tank, a feeding pipe, and an extrusion cylinder, as well as an auxiliary cleaning component and a plastic granule mixing component. The extrusion cylinder is fixedly installed on the upper part of the installation platform, the mixing tank is located on the upper part of the extrusion cylinder, the feeding pipe has an inlet at the top and is fixedly installed inside the inlet, the auxiliary cleaning component is installed on the outside of the extrusion cylinder, and the plastic granule mixing component is installed inside the mixing tank.

[0006] Preferably, the auxiliary cleaning component includes a movable cylinder disposed on the upper part of the mounting platform, the movable cylinder corresponding to the extrusion cylinder, an injection screw rotatably connected inside the extrusion cylinder, an extrusion motor fixedly mounted on the side wall of the extrusion cylinder, the output end of the extrusion motor passing through the side wall of the extrusion cylinder and fixedly connected to one end of the extrusion screw, and a circular ring fixedly mounted on the side wall of the extrusion cylinder.

[0007] Preferably, the circular tube has a groove on its outside, a sealing ring is fixedly installed on the outside of the moving cylinder and is located in the groove, a limit rod is fixedly installed on the side wall of the moving cylinder, the injection screw has a circular groove inside and the limit rod is located in the circular groove, the injection screw rotates outside the limit rod, and the moving cylinder has a discharge port on its side wall.

[0008] Preferably, an L-shaped slider slides on the outside of the guide rod, one end of which is fixedly connected to the side wall of the moving cylinder. A groove is provided on the upper part of the mounting platform, and an L-shaped connecting plate slides inside the groove. The upper part of the L-shaped connecting plate is fixedly connected to the lower part of the moving cylinder. A fixing plate is fixedly installed on the lower part of the mounting platform, and a lead screw is rotatably connected between the fixing plates. The inside of the L-shaped connecting plate is screwed to the outer surface of the lead screw. A drive motor is fixedly installed on the side wall of the mounting platform, and the output end of the drive motor passes through the side wall of the fixing plate and is fixedly connected to one end of the lead screw.

[0009] Preferably, the granule mixing assembly includes an L-shaped fixing frame fixedly installed on the top of the extrusion cylinder, one end of the L-shaped fixing frame being fixedly connected to the outside of the mixing tank, a circular tube being fixedly installed between the inner and outer walls of the extrusion cylinder, one end of the circular tube being connected to the inner cavity of the extrusion cylinder, the other end of the circular tube being connected to the inner cavity of the mixing tank, a valve being installed inside the circular tube, a stirring rod being rotatably connected inside the mixing tank, and a stepper motor being fixedly installed on the top of the mixing tank, the output end of the stepper motor passing through the top of the mixing tank and being fixedly connected to one end of the stirring rod.

[0010] The beneficial effects of this utility model are:

[0011] 1. The auxiliary cleaning component is designed to open the outside of the extrusion screw by moving it, making it easier for users to clean external impurities. This alleviates the problem that when the extrusion screw is usually enclosed inside the equipment, some material may remain on the outside of the screw during the melting and pushing process, making it difficult to remove impurities. Over time, this phenomenon may lead to the mixing of new and old materials, thus affecting the material quality.

[0012] 2. The plastic pellet mixing component is designed to mix materials by rotation, which improves the overall quality of the material particles and enhances the quality of subsequent processing. Attached Figure Description

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

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 3 This is a cross-sectional structural diagram of the present invention.

[0016] Figure 4 For practical purposes Figure 3 Enlarged view of point A in the image.

[0017] In the diagram: 1. Mounting platform; 2. Auxiliary cleaning assembly; 201. Moving cylinder; 202. Injection screw; 203. Extrusion motor; 204. Circular ring; 205. Sealing ring; 206. Limiting rod; 207. L-shaped slider; 208. Lead screw; 209. Drive motor; 3. Plastic pellet mixing assembly; 301. L-shaped fixing frame; 302. Circular tube; 303. Stirring rod; 304. Stepper motor; 4. Mixing tank; 5. Feed pipe; 6. Extrusion cylinder. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Please see Figures 1-4 As shown, a high-temperature and high-pressure foaming molding production device for EVA plastic granules includes an installation platform 1, a mixing tank 4, a feed pipe 5, and an extrusion cylinder 6. It also includes an auxiliary cleaning component 2 and a granule mixing component 3. The extrusion cylinder 6 is fixedly installed on the upper part of the installation platform 1, the mixing tank 4 is located on the upper part of the extrusion cylinder 6, the feed pipe 5 has an inlet at the top and is fixedly installed inside the inlet, the auxiliary cleaning component 2 is installed on the outside of the extrusion cylinder 6, and the granule mixing component 3 is installed inside the mixing tank 4. Through a moving mechanism, the convenient cleaning component realizes easy cleaning of the extrusion screw, effectively reducing the accumulation of impurities on the screw surface, thereby avoiding the problem of difficult cleaning.

[0020] like Figures 1-4As shown, the auxiliary cleaning component 2 includes a movable cylinder 201 disposed on the upper part of the mounting platform 1. The movable cylinder 201 corresponds to the extrusion cylinder 6. An injection screw 202 is rotatably connected inside the extrusion cylinder 6. An extrusion motor 203 is fixedly installed on the side wall of the extrusion cylinder 6. The output end of the extrusion motor 203 passes through the side wall of the extrusion cylinder 6 and is fixedly connected to one end of the extrusion screw. A circular ring 204 is fixedly installed on the side wall of the extrusion cylinder 6. A groove is opened on the outside of the circular tube 302. A sealing ring 205 is fixedly installed on the outside of the movable cylinder 201. The sealing ring 205 is located in the groove. A limit rod 206 is fixedly installed on the side wall of the movable cylinder 201. The inside of the injection screw 202... A circular groove is provided, with a limiting rod 206 located inside the groove. The injection screw 202 rotates outside the limiting rod 206. A discharge port is provided on the side wall of the moving cylinder 201. An L-shaped slider 207 slides on the outside of the guide rod, with one end of the L-shaped slider 207 fixedly connected to the side wall of the moving cylinder 201. A sliding groove is provided on the upper part of the mounting platform 1, with an L-shaped connecting plate sliding inside the groove. The upper part of the L-shaped connecting plate is fixedly connected to the lower part of the moving cylinder 201. A fixing plate is fixedly installed on the lower part of the mounting platform 1, with a lead screw 208 rotatably connected between the fixing plates. The inside of the L-shaped connecting plate is screwed to the outer surface of the lead screw 208. A drive motor 20 is fixedly installed on the side wall of the mounting platform 1. 9. The output end of the drive motor 209 passes through the side wall of the fixed plate and is fixedly connected to one end of the lead screw 208. The user first heats the extrusion cylinder 6 to raise its temperature. Then, the plastic granules and foaming agent are poured into the feed tank, allowing the plastic granules to enter the mixing tank 4. As the plastic granules and foaming agent are poured in, the stepper motor 304 is turned on. The stepper motor 304 drives the stirring rod 303 to rotate, mixing the plastic granules and foaming agent. Once mixing is complete, the valve is opened, allowing the plastic granules to enter the extrusion cylinder 6. The extrusion motor 203 is then turned on, and the extrusion process continues. When motor 203 is turned on, the extrusion screw rotates. As the extrusion screw rotates, the plastic granules are melted and pushed forward, eventually being extruded through the discharge port. If impurities accumulate on the outside of the extrusion screw after repeated use, drive motor 209 is turned on. Drive motor 209 moves the L-shaped connecting plate, which in turn moves the moving cylinder 201. The movement of the moving cylinder 201 opens the outside of the extrusion screw, allowing the user to clean external impurities. Simultaneously, the limiting rod 206 moves with the moving cylinder 201, ensuring the extrusion screw is balanced at both ends.

[0021] like Figures 1-3As shown, the plastic pellet mixing assembly 3 includes an L-shaped fixing frame 301 fixedly installed on the top of the extrusion cylinder 6. One end of the L-shaped fixing frame 301 is fixedly connected to the outside of the mixing tank 4. A circular tube 302 is fixedly installed between the inner and outer walls of the extrusion cylinder 6. One end of the circular tube 302 is connected to the inner cavity of the extrusion cylinder 6, and the other end of the circular tube 302 is connected to the inner cavity of the mixing tank 4. A valve is installed inside the circular tube 302. A stirring rod 303 is rotatably connected inside the mixing tank 4. A stepper motor 304 is fixedly installed on the top of the mixing tank 4. The output end of the stepper motor 304 passes through the top of the mixing tank 4 and is fixedly connected to one end of the stirring rod 303. When the stepper motor 304 is turned on, it drives the stirring rod 303 to rotate. As the stirring rod 303 rotates, the plastic pellets and the foaming agent are mixed. When the mixing is completed, the valve is opened, allowing the plastic pellets to enter the extrusion cylinder 6. The plastic pellet mixing assembly 3 ensures that the plastic pellets and the foaming agent are mixed more evenly.

[0022] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A high-temperature and high-pressure foaming molding production device for EVA plastic granules, comprising a mounting platform (1), a mixing tank (4), a feeding pipe (5), and an extrusion cylinder (6), characterized in that: It also includes an auxiliary cleaning component (2) and a granule mixing component (3). The extrusion cylinder (6) is fixedly installed on the upper part of the mounting platform (1). The mixing tank (4) is located on the upper part of the extrusion cylinder (6). The feed pipe (5) has an inlet at the top and is fixedly installed inside the inlet. The auxiliary cleaning component (2) is installed on the outside of the extrusion cylinder (6). The granule mixing component (3) is installed inside the mixing tank (4).

2. The eva plastic particle high temperature and high pressure foaming forming production device according to claim 1, characterized in that: The auxiliary cleaning component (2) includes a movable cylinder (201) disposed on the upper part of the mounting platform (1). The movable cylinder (201) corresponds to the extrusion cylinder (6). An injection screw (202) is rotatably connected inside the extrusion cylinder (6). An extrusion motor (203) is fixedly installed on the side wall of the extrusion cylinder (6). The output end of the extrusion motor (203) passes through the side wall of the extrusion cylinder (6) and is fixedly connected to one end of the extrusion screw. A circular ring (204) is fixedly installed on the side wall of the extrusion cylinder (6).

3. The eva plastic particle high temperature and high pressure foaming forming production device according to claim 2, characterized in that: The circular ring (204) has a groove on its outside. A sealing ring (205) is fixedly installed on the outside of the movable cylinder (201). The sealing ring (205) is located in the groove. A limiting rod (206) is fixedly installed on the side wall of the movable cylinder (201). A circular groove is opened inside the injection screw (202). The limiting rod (206) is located in the circular groove. The injection screw (202) rotates outside the limiting rod (206). A discharge port is opened on the side wall of the movable cylinder (201).

4. The high-temperature and high-pressure foaming molding production device for EVA plastic granules according to claim 3, characterized in that: A guide rod is fixedly installed on the outside of the mounting platform (1). An L-shaped slider (207) slides on the outside of the guide rod. One end of the L-shaped slider (207) is fixedly connected to the side wall of the moving cylinder (201). A sliding groove is provided on the upper part of the mounting platform (1). An L-shaped connecting plate slides inside the sliding groove. The upper part of the L-shaped connecting plate is fixedly connected to the lower part of the moving cylinder (201). A fixing plate is fixedly installed on the lower part of the mounting platform (1). A lead screw (208) is rotatably connected between the fixing plates. The inside of the L-shaped connecting plate is screwed to the outer surface of the lead screw (208). A drive motor (209) is fixedly installed on the side wall of the mounting platform (1). The output end of the drive motor (209) passes through the side wall of the fixing plate and is fixedly connected to one end of the lead screw (208).

5. The eva plastic particle high temperature and high pressure foaming forming production device according to claim 1, characterized in that: The granule mixing assembly (3) includes an L-shaped fixing frame (301) fixedly installed on the top of the extrusion cylinder (6). One end of the L-shaped fixing frame (301) is fixedly connected to the outside of the mixing tank (4). A circular tube (302) is fixedly installed between the inner and outer walls of the extrusion cylinder (6). One end of the circular tube (302) is connected to the inner cavity of the extrusion cylinder (6), and the other end of the circular tube (302) is connected to the inner cavity of the mixing tank (4).

6. The eva plastic particle high temperature and high pressure foaming forming production device according to claim 5, characterized in that: A valve is installed inside the circular tube (302), and a stirring rod (303) is rotatably connected inside the mixing tank (4). A stepper motor (304) is fixedly installed on the top of the mixing tank (4). The output end of the stepper motor (304) passes through the top of the mixing tank (4) and is fixedly connected to one end of the stirring rod (303).

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