Modified plastic extrusion air cooling structure

Abstract

The utility model relates to the technical field of plastic extrusion equipment, concretely relates to a modified plastic extrusion air cooling structure. The air cooling structure includes extruder head, cooling wind cover, fan, air guide spare, air outlet and mounting assembly. The cooling wind cover is sleeved at the discharge end outside of extruder head, and is fixedly connected with extruder head, the fan is communicated with the air inlet of cooling wind cover, is used for providing cooling airflow, the air guide spare is arranged in the inside of wind cover, is used for guiding airflow to cool extrudate uniformly, the wind cover tail end is equipped with air outlet for exhaust, and the mounting assembly is used for fixing wind cover and fan. The structure is high in cooling efficiency, airflow is uniformly distributed, is convenient to operate and maintain, and is suitable for a variety of modified plastic extrusion applications.

Description

TECHNICAL FIELD

[0001] The utility model relates to air cooling equipment technical field, especially a modified plastic extrusion air cooling structure. BACKGROUND

[0002] In the processing of plastic products, extrusion molding is a common and efficient processing technology, especially in the application of modified plastics. Modified plastics improve their mechanical properties, thermal stability or flame retardant properties by adding fillers, reinforcing agents, flame retardants and other means, so that they can adapt to more complex or high-performance application requirements. When extruding such materials, the modified plastics in molten state need to be cooled quickly after being formed by the extruder head in order to stabilize their size and shape and ensure the subsequent processing or product performance. However, due to the large heat capacity and high viscosity of modified plastics, the cooling process is more complex and demanding than ordinary plastics.

[0003] Most of the existing extrusion cooling technologies use water cooling or natural air cooling, but the water cooling system has problems such as complex equipment, large occupation, high maintenance cost, etc. Natural air cooling has low cooling efficiency and cannot meet the cooling needs of high-performance modified plastic products. In addition, some air cooling systems have simple structure, and the cold air flows unevenly around the extrudate, resulting in inconsistent cooling speed of the product and easy deformation defects such as bending and warping, which seriously affects the product quality and production stability.

[0004] Therefore, the present inventors have specially designed a modified plastic extrusion air cooling structure, which gives rise to the present case. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present application is to provide a modified plastic extrusion air cooling structure, which at least solves the problems of low cooling efficiency, uneven cooling and easy deformation of the extrudate surface during the extrusion of modified plastics.

[0006] To solve the above technical problems, the utility model provides the following technical scheme:

[0007] The present application provides a modified plastic extrusion air cooling structure, characterized by comprising: an extruder head for extruding modified plastics in a molten state; a cooling air cover externally sleeved on the discharge end of the extruder head for air cooling the extrudate, the cooling air cover being fixedly connected with the extruder head; a fan in communication with the air inlet of the cooling air cover for conveying cooling air flow into the cooling air cover; a wind guide member arranged inside the cooling air cover for guiding the air flow to uniformly blow against the extrudate; an air outlet arranged on the side of the cooling air cover away from the air inlet for discharging the air flow; and a mounting assembly for fixing the cooling air cover and the fan.

[0008] In a further aspect, the cooling hood is a U-shaped cover, and an inner cavity of the U-shaped cover is arranged around the discharge end of the extruder head and forms a closed air duct.

[0009] In a further aspect, the air guide member is a plurality of air guide blades, and the air guide blades are uniformly distributed along the inner wall of the cooling hood.

[0010] In a further aspect, the air guide blades are arranged to be inclined relative to the discharge direction, so as to change the direction of the air flow and enhance the uniformity of the cooling.

[0011] In a further aspect, the fan is connected to the air inlet of the cooling hood through a flexible connecting pipe.

[0012] In a further aspect, the mounting assembly comprises a placing platform and a supporting column.

[0013] In a further aspect, the placing platform is further provided with a damping pad.

[0014] In a further aspect, an observation window is arranged on the side surface of the cooling hood.

[0015] In a further aspect, the observation window is a plastic transparent plate.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] By arranging the U-shaped cooling hood and the internal air guide member, the surrounding and uniform air cooling of the extrudate is realized, and the problems of low cooling efficiency and uneven cooling in the traditional structure, which leads to the deformation of the product, are effectively solved.

[0018] The specific implementation manner of the utility model will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] Among them:

[0020] Figure 1 is the overall structure of the utility model Figure 1 ;

[0021] Figure 2 is the overall structure of the utility model Figure 2 ;

[0022] Figure 3 is the overall structure of the utility model cooling hood

[0023] Label Explanation:

[0024] 1. Extruder head; 2. Cooling hood; 21. Air inlet; 3. Fan; 4. Air guide; 5. Air outlet; 6. Mounting components; 61. Placement platform; 62. Support column; 7. Connecting pipe; 8. Vibration damping pad; 9. Observation window. Detailed Implementation

[0025] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0026] like Figure 1 and Figure 2 As shown, a modified plastic extrusion air-cooling structure mainly includes: an extruder head 1, a cooling shroud 2, a fan 3, an air guide 4, an air outlet 5, and an installation assembly 6. The overall structure is optimized around the cooling process of the extruded material. This structure aims to improve the cooling efficiency and molding quality of the product during the extrusion process of modified plastics, and is especially suitable for the industrial application of modified materials with high viscosity, high filler content, and high temperature stability.

[0027] The extruder head 1, as the front-end component of the structure, is connected to the end of the extrusion host. Its function is to directionally extrude the molten modified plastic through the die orifice. Because the surface temperature of the modified plastic is high and the molding boundary is unstable after extrusion, the cooling process directly affects the dimensional accuracy and surface quality of the product. Therefore, an effective and rapid cooling device must be installed at its rear end.

[0028] The cooling shroud 2 is fitted onto the outside of the extrusion head 1 at the discharge end. It preferably adopts an integral U-shaped structure or a C-shaped semi-ring structure and is fixedly connected to the extrusion head 1 by clamping screws or flanges to ensure a stable gap between the shroud and the extruded material outlet. This shroud forms a closed annular or semi-annular air chamber, its internal space used to guide airflow to surround the extruded material, achieving uniform cooling from three or more sides. Compared to traditional single-sided blowing methods, the closed shroud structure offers higher cooling efficiency and air energy utilization.

[0029] like Figure 2 and Figure 3 As shown, an air inlet 21 is provided on one side of the cooling shroud 2, and is connected to the external fan 3 via a flexible connecting pipe 7. The connecting pipe 7 can be made of high-temperature bending-resistant material to facilitate the absorption of vibration and displacement changes during operation. The fan 3 has a multi-speed adjustment switch inside, and in some embodiments, it can also be linked to a temperature sensor to achieve intelligent airflow adjustment to adapt to the cooling needs of different materials. The fan 3 is arranged on one side or top of the cooling shroud 2, depending on the installation environment.

[0030] The air guide 4 is a functional structure arranged in the cooling air cover 2, which includes fixed air guide blades, spiral guide plates or air flow rectifying nets.

[0031] As shown in Figure 3 To realize timely discharge of hot air, the cooling air cover 2 is provided with an air outlet 5 at one end away from the air inlet 21, which preferably adopts a downward bending or air guide structure to avoid disturbance of the extrusion stability caused by hot air backflow. In some application scenarios, the air outlet 5 can also be connected with an air extraction system to enhance the air extraction rate and form a positive cooling channel.

[0032] The installation assembly 6 is used for overall supporting of the cooling air cover 2 and the fan 3, and includes a placement platform 61 and a vertical support column 62 arranged on an extrusion main machine platform. The support column 62 is height-adjustable to adapt to height differences of extrusion heads 1 of different specifications; the bottom of the placement platform 61 is provided with a damping pad 8 to effectively isolate mechanical vibration generated during equipment operation and structural resonance caused by the fan 3, so as to ensure stability of the positional relationship between the air cover and the discharge port.

[0033] To enhance operation visibility, an observation window 9 is arranged on one side of the cooling air cover 2, which is preferably a heat-resistant transparent plastic plate installed in a window frame and can be removed for cleaning. Through the observation window 9, an operator can monitor the cooling state and surface forming condition of the extrudate in real time, which facilitates quick discovery and processing of defects.

[0034] In further optimization design, a temperature sensor can be arranged near the air outlet 5 or the inner wall of the cooling air cover 2 and connected with a controller of the fan 3 through a cable to realize temperature monitoring and closed-loop adjustment of air speed. This function is suitable for modified plastics with high temperature control requirements, such as flame-retardant ABS and reinforced PP, to improve product forming consistency.

[0035] The utility model discloses a cooling device for modified plastics, which comprises an extrusion head 1, a cooling air cover 2, a fan 3 and an installation assembly 6.

[0036] The utility model has been described exemplarily above in combination with the drawings, obviously, the utility model specific implementation is not limited by the above-mentioned mode, as long as various non-essential improvements of method concept and technical scheme of adopting the utility model or the utility model concept and technical scheme are directly applied to other occasions without improvement, all are within the protection scope of the utility model.

Claims

1. A modified plastic extrusion air-cooled structure, characterized in that, include: Extrusion head, used to extrude modified plastics in molten state; A cooling shroud is fitted over the outside of the discharge end of the extruder head to cool the extrudate. The cooling shroud is fixedly connected to the extruder head. A fan is connected to the air inlet of the cooling shroud and is used to deliver cooling airflow into the cooling shroud. An air guide, disposed inside the cooling shroud, is used to guide airflow evenly toward the extrudate; An air outlet is located on the side of the cooling shroud away from the air inlet, and is used to exhaust airflow; Mounting components are used to secure the cooling shroud and the fan.

2. The modified plastic extrusion air-cooled structure according to claim 1, characterized in that, The cooling shroud is a U-shaped shroud, the inner cavity of which surrounds the discharge end of the extruder head and forms a closed air duct.

3. The modified plastic extrusion air-cooled structure according to claim 2, characterized in that, The air guide component consists of multiple air guide blades, which are evenly distributed along the inner wall of the cooling shroud.

4. The modified plastic extrusion air-cooled structure according to claim 3, characterized in that, The air guide vanes are inclined relative to the discharge direction to change the airflow direction and enhance cooling uniformity.

5. The modified plastic extrusion air-cooled structure according to claim 4, characterized in that, The fan is connected to the air inlet of the cooling shroud via a flexible connecting pipe.

6. The modified plastic extrusion air-cooled structure according to claim 1, characterized in that, The installation components include a placement platform and support columns.

7. The modified plastic extrusion air-cooled structure according to claim 6, characterized in that, The placement platform is also equipped with vibration damping pads.

8. The modified plastic extrusion air-cooled structure according to claim 1, characterized in that, An observation window is provided on the side of the cooling shroud.

9. A modified plastic extrusion air-cooled structure according to claim 8, characterized in that, The observation window is a transparent plastic panel.

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