Extruder heating mechanism

Abstract

The utility model discloses a heating mechanism of an extruder, which belongs to the technical field of film extruders and comprises a spiral extrusion pipe, the heating mechanisms are arranged on the outer wall of the spiral extrusion pipe; the heating mechanism comprises a bottom sleeve, a top sleeve, an electric heating plate fixed in the bottom sleeve and the top sleeve, a connecting cover integrally formed at the bottom of the bottom sleeve, a fan arranged at one end of the connecting cover, and an air outlet calandria integrally formed at the top of the top sleeve; one end of the air outlet calandria is connected with a cover plate in a sliding mode, two symmetrical linkage threaded rods are fixed to the outer wall of the cover plate, and one end of each linkage threaded rod is in threaded connection with a threaded sleeve. The plastic is uniformly plasticized in the screw propelling process, and the product quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of film extruder technology, specifically to an extruder heating mechanism. Background Technology

[0002] A film extruder is a device used to produce plastic films. It receives and extrudes plastic raw materials through its spiral extrusion tube, and heats the tube with an electric heating jacket. This heats the plastic material inside the tube, melts it, and then extrudes it through a die to a receiving device to form a film. However, most heating jackets used in current film extruders only have basic heating capabilities. Prolonged operation can easily lead to overheating, causing the plastic inside the tube to degrade and affecting product quality.

[0003] Based on this, the present invention designs an extruder heating mechanism to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a heating mechanism for an extruder to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an extruder heating mechanism, comprising: a spiral extrusion tube; and further comprising a plurality of heating mechanisms disposed on the outer wall of the spiral extrusion tube;

[0006] The heating mechanism includes a bottom sleeve and a top sleeve, an electric heating plate fixed inside the bottom sleeve and the top sleeve, a connecting cover integrally formed at the bottom of the bottom sleeve, a fan disposed at one end of the connecting cover, and an air outlet pipe integrally formed at the top of the top sleeve.

[0007] One end of the air outlet pipe is slidably connected to a cover plate, and two symmetrical linkage screws are fixed on the outer wall of the cover plate. One end of the linkage screw is threadedly connected to a threaded sleeve.

[0008] Preferably, the fan inlet end is provided with an installation ring, an air filter is fixed to the inner wall of the installation ring, and two symmetrical baffles are fixed to the outer wall of the installation ring.

[0009] Preferably, the air inlet end of the fan is fixed with two symmetrical arc-shaped plugs that are inserted into the mounting ring. One end of each of the two arc-shaped plugs is fixed with a magnetic block, and one end of the magnetic block is magnetically connected to the mounting ring.

[0010] Preferably, both the top sleeve and the bottom sleeve have connecting plates fixed to their outer walls, and the connecting plates of the top sleeve and the bottom sleeve are connected by bolts.

[0011] Preferably, the electrical terminals of the heating plate extend out to the top and bottom sleeves and are connected to external wiring.

[0012] Preferably, the threads of the linkage screws are in the same direction, and two adjacent linkage screws are locked together by a threaded sleeve.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] Firstly, it can dissipate heat and cool the heating plate in real time, preventing overheating and helping to maintain a uniform temperature, ensuring that the plastic is uniformly plasticized during the screw propulsion process, and improving product quality;

[0015] Secondly, the cover plate in each heating mechanism can be opened and closed conveniently at the same time through the cooperation of the linkage screw and the threaded sleeve, or it can be left unconnected to a separate switch according to the needs of plastic processing;

[0016] Thirdly, when the fan is drawing air, it uses the air filter at its air inlet to intercept and filter the airflow, reducing the amount of impurities entering the top and bottom sleeves. The air filter can also be easily disassembled and cleaned using the mounting ring. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this embodiment;

[0019] Figure 2 This is a schematic diagram highlighting the arrangement of the top and bottom sleeves in this embodiment;

[0020] Figure 3 This is a schematic diagram highlighting the internal structure of the top and bottom sleeves in this embodiment;

[0021] Figure 4 This is a schematic diagram highlighting the cover plate connection structure in this embodiment;

[0022] Figure 5 This is a schematic diagram highlighting the fan connection structure in this embodiment.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Spiral extrusion tube; 2. Bottom sleeve; 3. Top sleeve; 4. Connecting cover; 5. Fan; 6. Air outlet pipe; 7. Cover plate; 8. Linkage screw; 9. Threaded sleeve; 10. Mounting ring; 11. Air filter; 12. Arc-shaped insert; 13. Dial plate; 14. Heating plate; 15. Connecting plate; 16. External wiring. Detailed Implementation

[0025] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 This utility model provides a technical solution: an extruder heating mechanism, including: a spiral extrusion tube 1; and also including a plurality of heating mechanisms disposed on the outer wall of the spiral extrusion tube 1;

[0027] The heating mechanism includes a bottom sleeve 2 and a top sleeve 3, an electric heating plate 14 fixed inside the bottom sleeve 2 and the top sleeve 3, a connecting cover 4 integrally formed at the bottom of the bottom sleeve 2, a fan 5 set at one end of the connecting cover 4, and an air outlet pipe 6 integrally formed at the top of the top sleeve 3.

[0028] One end of the air outlet pipe 6 is slidably connected to a cover plate 7. Two symmetrical linkage screws 8 are fixed on the outer wall of the cover plate 7. One end of the linkage screw is threadedly connected to a threaded sleeve 9.

[0029] The spiral extrusion tube 1 connects to the film mold to extrude plastic raw materials. Its outer wall is heated in sections by multiple heating mechanisms, which can be selected and adjusted according to the type of plastic. The bottom sleeve 2 and the top sleeve 3 of the heating mechanism are connected to each other and form a cavity inside. The electric heating plate 14 is fixedly connected to the inner wall of the cavity for heating. The cavity formed by the bottom sleeve 2 and the top sleeve 3 ensures a good heating space. When the electric heating plate 14 is heating, the top cover, bottom cover, connecting cover 4, fan 5 and air outlet pipe 6 are interconnected to form a flow channel for airflow heat dissipation and heat dissipation of the electric heating plate 14. The air outlet pipe 6 is normally blocked by the cover plate 7. When heat dissipation is needed, the cover plate 7 can be opened. The cover plate 7 in each heating mechanism can be opened and closed simultaneously or not connected to a separate switch through the cooperation of the linkage screw 8 and the threaded sleeve 9.

[0030] In a further preferred embodiment, the air inlet end of the fan 5 is provided with an installation ring 10, an air filter 11 is fixed to the inner wall of the installation ring 10, and two symmetrical baffles 13 are fixed to the outer wall of the installation ring 10.

[0031] The fan 5 is equipped with an air filter 11 at the air inlet to filter and intercept impurities in the drawn airflow. The air filter 11 is installed and removed via an installation ring 10, and two levers 13 are used to facilitate the removal and installation of the installation ring 10 for cleaning and replacement.

[0032] More preferably, the air inlet end of the fan 5 is fixed with two symmetrical arc-shaped plugs 12 that are inserted into the mounting ring 10. One end of each arc-shaped plug 12 is fixed with a magnetic block, and one end of the magnetic block is magnetically connected to the mounting ring 10.

[0033] The air inlet of the fan 5 is connected to the mounting ring 10 by an arc-shaped plug 12, and the mounting ring 10 is magnetically connected by a magnetic block and an iron mounting ring 10, so that the mounting ring 10 is stable and can be easily removed by simply pulling it out.

[0034] More preferably, both the outer walls of the top sleeve 3 and the bottom sleeve 2 are fixed with connecting plates 15, and the connecting plates 15 of the top sleeve 3 and the bottom sleeve 2 are locked together by bolts;

[0035] The connecting plates 15 of the top sleeve 3 and the bottom sleeve 2 are locked together by bolts and nuts, so that the top sleeve 3 and the bottom sleeve 2 are installed and wrapped around the spiral extrusion tube 1 for use.

[0036] In a further preferred embodiment, the electrical terminals of the heating plate 14 extend out from the top sleeve 3 and the bottom sleeve 2 and are connected to external wiring 16;

[0037] The electric heating plate 14 is connected to power cables and other cables through its electrical terminals to ensure operation.

[0038] More preferably, the threads of the linkage screws 8 are in the same direction, and two adjacent linkage screws 8 are locked together by a threaded sleeve 9;

[0039] The threads of the linkage screws 8 are aligned, which facilitates the rotation and displacement of the threaded sleeve 9 between the two connected linkage screws 8.

[0040] A specific application of this embodiment is as follows: The spiral extrusion tube 1 is heated in segments using multiple heating mechanisms. Different plastic materials require different processing temperatures, and segmented heating allows for flexible adjustment. During heating, the heating plates 14 inside the top sleeve 3 and bottom sleeve 2 are electrically controlled via external wiring 16. Simultaneously, through the connection and cooperation of the linkage screw 8 and threaded sleeve 9, the covers 7 of multiple air outlet pipes 6 can be slidably opened, ensuring airflow from the top sleeve 3 and bottom sleeve 2. When the top sleeve 3 is not in operation, the linkage screw 8 of its cover 7 can be connected to other linkage screws 8 without passing through the threaded sleeve 9, thus preventing movement. During heating, the fan 5 blows air towards the connecting cover 4, bottom cover, and top cover. The airflow passes through the cavity between the top sleeve 3, bottom sleeve 2, and heating plate 14, and finally exits through the open air outlet pipes 6, providing real-time heat dissipation and cooling for the heating plate 14. When the fan 5 is drawing air, its air inlet filter 11 intercepts and filters the airflow, reducing impurities entering the top sleeve 3 and bottom sleeve 2.

[0041] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] 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 extruder heating mechanism comprising: Spiral extrusion pipe (1), characterized by further comprising a plurality of heating mechanisms arranged on the outer wall of the spiral extrusion pipe (1); The heating mechanism comprises a bottom sleeve (2) and a top sleeve (3), an electric heating plate (14) fixed in the bottom sleeve (2) and the top sleeve (3), a connecting cover (4) integrally formed at the bottom of the bottom sleeve (2), a fan (5) arranged at one end of the connecting cover (4), and an air outlet exhaust pipe (6) integrally formed at the top of the top sleeve (3). One end of the air outlet exhaust pipe (6) is slidably connected with a cover plate (7), the outer wall of the cover plate (7) is fixed with two symmetrical linkage screws (8), and one end of the linkage screw is threadedly connected with a threaded sleeve (9).

2. An extruder heater mechanism as claimed in claim 1, wherein: The air inlet end of the fan (5) is provided with a mounting ring (10), the inner wall of the mounting ring (10) is fixed with an air filter screen (11), and the outer wall of the mounting ring (10) is fixed with two symmetrical push plates (13).

3. An extruder heater mechanism as claimed in claim 2, wherein: The air inlet end of the fan (5) is fixed with two symmetrical arc-shaped insertion blocks (12) which are inserted with the mounting ring (10), one end of each of the two arc-shaped insertion blocks (12) is fixed with a magnetic block, and the one end of the magnetic block is magnetically connected with the mounting ring (10).

4. An extruder heater mechanism as defined in claim 1, wherein: The outer wall of the top sleeve (3) and the bottom sleeve (2) is fixed with a connecting plate (15), and the connecting plates (15) of the top sleeve (3) and the bottom sleeve (2) are connected by bolt locking.

5. An extruder heater mechanism as defined in claim 1, wherein: The electric heating plate (14) is connected with an external wire (16) through the extension of the electric heating plate (14) from the top sleeve (3) and the bottom sleeve (2).

6. An extruder heater mechanism as defined in claim 1, wherein: The screw threads of the linkage screws (8) are in the same direction, and two linkage screws (8) in close contact are connected by a threaded sleeve (9).

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