A head discharging structure of a plastic pipe forming machine
By using heating components in the head discharge structure of the plastic pipe forming machine to heat the discharge screw, the problem of crystallization of easily crystallized plastic materials in traditional discharge mechanisms is solved, and production continuity and product quality are improved.
Patent Information
- Application Number
- CN202421529695.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Easy-crystallized plastic materials are easily crystallized in traditional discharge mechanisms, resulting in increased screw torque, material adhesion and blockage, affecting production continuity and product quality.
Design a head discharge structure of a plastic pipe forming machine, and use heating components to heat it in the cavity of the discharge screw to ensure that the material is always at the right temperature and reduce crystallization.
Through the use of heating components, the crystallization of materials on the discharge screw due to temperature changes is reduced, the screw torque is reduced, material adhesion and blockage is avoided, and production continuity and product quality are improved.
Smart Images
Figure CN222727330U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of plastic pipe production equipment, and in particular to a head discharge structure of a plastic pipe forming machine. Background Art
[0002] In the field of plastic pipe production, the crystallization behavior of plastic materials has a significant impact on the extrusion molding process. In particular, easy-to-crystallize plastic materials, such as high-density polyethylene (HDPE) and polypropylene (PP), can easily affect the fluidity of the material and may also cause the material to adhere to and clog the discharge mechanism, especially the screw, thereby affecting the continuity of production and the quality of the pipe product.
[0003] In traditional discharging mechanisms, the screw is usually the main power source for pushing the material forward. However, when the material stays on the surface of the screw, there is a temperature difference between the screw and the material, which will cause the material to partially crystallize. This crystallization not only increases the friction between the screw and the material, resulting in an increase in the screw torque, but may also form a hard crystallized area on the screw surface, further aggravating the adhesion and blockage of the material, affecting the entire production process. Utility Model Content
[0004] In order to improve the problem of material crystallization on the screw, the present application provides a head discharge structure of a plastic pipe forming machine.
[0005] The head discharge structure of a plastic pipe forming machine provided in this application adopts the following technical solution:
[0006] A head discharging structure of a plastic pipe forming machine, comprising
[0007] A housing provided with a flow channel;
[0008] A discharge screw is inserted in the flow channel, the outer surface of the discharge screw is provided with threads to drive the material to move when the discharge screw rotates, and the discharge screw is provided with a cavity;
[0009] A heating component is arranged in the cavity of the discharge screw and is used for heating the discharge screw.
[0010] By adopting the above technical scheme, the material enters the flow channel of the outer shell, and driving the discharge screw to rotate can drive the material to move, thereby realizing the stirring and conveying of the material; the heating component can heat the discharge screw, so that the material contacting the surface of the discharge screw is always at a suitable temperature, reducing the crystallization of the material on the discharge screw due to temperature changes, and improving the problem of crystallization of the material on the screw; the discharge screw heated by the heating component can also maintain the molten state of the material in contact with the surface, reduce its viscosity, and facilitate the head discharge structure of the plastic pipe forming machine to output the molten state of the material.
[0011] Preferably, the heating assembly includes a first insulating layer, a heating layer, a connecting layer and a second insulating layer, the first insulating layer, the heating layer, the connecting layer and the second insulating layer are rolled up to form a channel for the discharge screw to pass through, the first insulating layer is connected to the inner surface of the discharge screw, the heating layer is connected to the first insulating layer to heat the discharge screw, the connecting layer is used to connect a power source and the heating layer to provide electrical energy to the heating layer, and the second insulating layer is connected to the connecting layer to prevent the connecting layer from being exposed to the external environment.
[0012] By adopting the above technical solution, the multi-layer rolling structure of the heating component can ensure the contact area between the heating component and the discharge screw, thereby evenly heating the discharge screw, ensuring that the material can remain in a molten state throughout the entire length of the discharge screw, and further reducing the occurrence of crystallization of the material on the discharge screw due to temperature changes.
[0013] Preferably, the heating assembly further comprises a transfer tube, an outer wall of the transfer tube is connected to an inner wall of the discharge screw, and an inner wall of the transfer tube is connected to an outer wall of the first insulating layer.
[0014] By adopting the above technical solution and adding the transfer pipe, the heat conduction path is optimized, the heat loss during the transfer process is reduced, and the thermal efficiency of the head discharge structure of the plastic pipe forming machine is improved.
[0015] Preferably, the heating component further comprises a slip ring and a brush, wherein the slip ring is electrically connected to the connecting layer, and the brush is used to connect a power source and the slip ring.
[0016] By adopting the above technical solution, the brush connected to the power supply can transfer electrical energy to the connecting layer connected to the heating layer, so that the heating component can maintain uninterrupted heating of the discharge screw as the discharge screw rotates, ensuring that the material can always remain in a molten state when in contact with the discharge screw, further reducing the occurrence of crystallization of the material on the discharge screw due to temperature changes.
[0017] Preferably, it also includes a driving assembly, which is connected to the discharge screw to drive the discharge screw to rotate around the axis.
[0018] By adopting the above technical solution, the discharging screw can be driven to rotate through the driving component, thereby driving the movement of the material in the flow channel to achieve stirring and conveying of the material.
[0019] Preferably, the shell further comprises a sealing cover, the sealing cover is provided with a through hole for the discharge screw to pass through, the sealing cover is arranged in the flow channel, the outer wall of the sealing cover is connected to the inner wall of the shell, and the inner wall of the sealing cover is connected to the discharge screw.
[0020] By adopting the above technical solution, the sealing cap can limit the position of the discharge screw, avoid equipment failure and production interruption caused by the position of the discharge screw, and avoid material leakage during the rotation of the discharge screw, thereby ensuring the material utilization rate of the extrusion process and the cleanliness of the workshop.
[0021] Preferably, a sealing ring is provided between the sealing cover and the discharge screw.
[0022] By adopting the above technical solution, the sealing ring can effectively prevent the molten plastic from leaking from the gap between the sealing cap and the discharge screw when the discharge screw rotates, thereby ensuring the material sealing during the extrusion process.
[0023] Preferably, a discharge port is provided at one end of the shell, and a plurality of feed ports are provided at the top of the shell.
[0024] By adopting the above technical solution, multiple feed ports allow different materials to be added simultaneously or in steps, and the material supply amount can be adjusted as needed, which helps to achieve material feeding and uniform mixing before extrusion, so that the head discharge structure of the plastic pipe forming machine can output the material.
[0025] In summary, the present application includes at least one of the following beneficial technical effects:
[0026] 1. The material enters the flow channel of the shell, and the driving of the discharge screw to rotate can drive the material to move, thereby achieving the mixing and conveying of the material; the heating component can heat the discharge screw, so that the material contacting the surface of the discharge screw is always at a suitable temperature, reducing the crystallization of the material on the discharge screw due to temperature changes, and improving the problem of material crystallization on the screw; the discharge screw heated by the heating component can also maintain the molten state of the material in contact with the surface, reduce its viscosity, and facilitate the discharge structure of the head of the plastic pipe forming machine to output the molten state of the material;
[0027] 2. The multi-layer rolling structure of the heating component can ensure the contact area between the heating component and the discharge screw, so as to evenly heat the discharge screw, ensure that the material can remain in a molten state along the entire length of the discharge screw, and further reduce the crystallization of the material on the discharge screw due to temperature changes;
[0028] 3. The addition of the transfer pipe optimizes the heat conduction path, reduces the heat loss during the transfer process, and improves the thermal efficiency of the head discharge structure of the plastic pipe forming machine. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 It is a practical application structure diagram of the head discharge structure of the plastic pipe forming machine of the embodiment of the present application;
[0030] Figure 2 It is one of the structural schematic diagrams of the head discharge structure of the plastic pipe forming machine in the embodiment of the present application;
[0031] Figure 3 is a schematic structural diagram of a housing in an embodiment of the present application;
[0032] Figure 4 It is a schematic cross-sectional structure diagram of a head discharge structure of a plastic pipe forming machine in an embodiment of the present application;
[0033] Figure 5 This is the second structural schematic diagram of the head discharge structure of the plastic pipe forming machine in the embodiment of the present application;
[0034] Figure 6 yes Figure 4 A is an enlarged view of the middle image.
[0035] Explanation of the reference numerals: 1. Shell; 11. Feed inlet; 12. Mounting port; 13. Discharge port; 14. Cover; 15. Sealing ring; 16. Flow channel; 2. Discharge screw; 21. Thread; 22. Cavity; 3. Heating component; 31. Transfer tube; 32. First insulating layer; 33. Heating layer; 34. Connecting layer; 35. Second insulating layer; 36. Slip ring; 37. Brush; 4. Drive component; 5. Heater; 6. Gear. DETAILED DESCRIPTION
[0036] The following is combined with Figure 1-6 This application is described in further detail.
[0037] The present application embodiment discloses a head discharge structure of a plastic pipe forming machine. Figure 1 The head discharge structure of the plastic pipe forming machine includes a shell 1, a discharge screw 2, a heating component 3 and a driving component 4.
[0038] like Figure 2 and Figure 3 As shown, the shell 1 is provided with a feed port 11, a discharge port 13 and a mounting port 12. The discharge port 13 and the mounting port 12 are respectively arranged at both ends of the shell 1. A flow channel 16 is arranged in the shell 1. The flow channel 16 is arranged along the length direction of the shell 1. The discharge port 13 and the mounting port 12 are connected through the flow channel 16. There are several feed ports 11. In the embodiment of the present application, there are two feed ports 11. The two feed ports 11 are opened at the top of the shell 1, and the two feed ports 11 are connected to the flow channel 16.
[0039] The user can add the same or different materials simultaneously or step by step through several feed ports 11. The materials enter the flow channel 16 through the several feed ports 11 and are mixed and melted in the flow channel 16. When the materials are mixed and melted, they can be output from the head discharge structure of the plastic pipe forming machine to the external environment through the discharge port 13.
[0040] It should be noted that the shell 1 is also provided with a heater 5 to heat the shell 1 to ensure that the shell 1 is at a suitable temperature when the molten material contacts the shell 1 to avoid temperature fluctuations of the material.
[0041] like Figure 4 and Figure 5 As shown, a cover 14 is provided in the flow channel 16, and the cover 14 is located on the side of the flow channel 16 close to the installation port 12. The outer wall of the cover 14 is connected to the inner wall of the shell 1. The cover 14 is provided with a through hole for the discharge screw 2 to pass through, and the through hole is connected to the flow channel 16. A sealing ring 15 is provided in the through hole, and the outer wall of the sealing ring 15 is coated with a lubricating paint.
[0042] When the discharge screw 2 is inserted into the through hole of the sealing cap 14, one end of the discharge screw 2 protrudes from the sealing cap 14. The sealing cap 14 can limit the axial movement of the discharge screw 2 to avoid equipment failure and production interruption caused by the change of the position of the discharge screw 2. The sealing ring 15 can prevent the material from leaking through the gap between the sealing cap 14 and the discharge screw 2 during the rotation of the discharge screw 2, thereby reducing the extrusion fluctuation caused by material leakage and ensuring the material utilization rate of the extrusion process and the cleanliness of the workshop.
[0043] The discharge screw 2 is inserted into the flow channel 16, and a cavity 22 is provided inside the discharge screw 2 along the length direction of the discharge screw 2. A thread 21 is provided on the outer surface of the discharge screw 2. One end of the discharge screw 2 passes through the cover 14 through a through hole and is connected to the drive assembly 4. The drive assembly 4 is specifically a motor, and a gear 6 is coaxially provided at one end of the discharge screw 2 protruding from the cover 14. A gear 6 is coaxially provided on the output shaft of the drive assembly 4, and the output shaft of the drive assembly 4 is connected to the discharge screw 2 through two gears 6; the user can drive the discharge screw 2 to rotate through the drive assembly 4, so that the material in the flow channel 16 is stirred or conveyed through the thread 21 on the surface of the discharge screw 2.
[0044] like Figure 6As shown, the heating component 3 is arranged in the cavity 22 of the discharge screw 2, and includes a transfer tube 31, a first insulating layer 32, a heating layer 33, a connecting layer 34, a second insulating layer 35, a slip ring 36 and a brush 37. The outer wall of the transfer tube 31 is connected to the inner wall of the discharge screw 2, the first insulating layer 32 covers the inner wall of the transfer tube 31 and is connected to the transfer tube 31, the heating layer 33 covers the side of the first insulating layer 32 away from the transfer tube 31 and is connected to the first insulating layer 32, the connecting layer 34 covers the side of the heating layer 33 away from the first insulating layer 32 and is electrically connected to the heating layer 33, the second insulating layer 35 is connected to the side of the connecting layer 34 away from the heating layer 33, the length of the second insulating layer 35 is smaller than the length of the connecting layer 34, the slip ring 36 is electrically connected to the connecting layer 34 through the part of the connecting layer 34 not covered by the second insulating layer 35, and is connected to the power supply through the brush 37.
[0045] The brush 37 connected to the power supply can transfer electrical energy to the connecting layer 34 connected to the heating layer 33, so that the heating component 3 can maintain uninterrupted heating of the discharge screw 2 as the discharge screw 2 rotates, ensuring that the material can always remain in a molten state when in contact with the discharge screw 2, reducing the occurrence of crystallization of the material on the discharge screw 2 due to temperature changes, and the transfer tube 31 can optimize the heat conduction path, reduce heat loss during the transfer process, and improve the thermal efficiency of the head discharge structure of the plastic pipe forming machine.
[0046] The multi-layer structure of the heating component 3 is rolled up into a cylindrical shape, which can fit the inner wall of the transfer tube 31, ensuring uniform heating of the discharge screw 2, so that the material in contact with the surface of the discharge screw 2 is always at a suitable temperature, reducing the crystallization of the material on the discharge screw 2 due to temperature changes, ensuring that the material can remain in a molten state throughout the entire length of the discharge screw 2, and further reducing the crystallization of the material on the discharge screw 2 due to temperature changes; the discharge screw 2 heated by the heating component 3 can also maintain the molten state of the material in contact with the surface, reduce its viscosity, and facilitate the head discharge structure of the plastic pipe forming machine to output the molten material.
[0047] Specifically, the user can heat the discharge screw 2 through the heating component 3 to avoid a temperature difference between the material and the surface of the discharge screw 2 when the material contacts the discharge screw 2, thereby reducing the temperature of the material taken away by the discharge screw 2, resulting in the temperature of the material being between the glass transition temperature and the melting point, thereby ensuring that the material does not crystallize on the discharge screw 2 due to temperature changes, thereby improving the problem of material crystallization on the screw; the power of the heating component 3 needs to be set according to the actual situation of the material, and no specific restrictions are made in the embodiments of the present application.
[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A head discharge structure of a plastic pipe forming machine, characterized in that: include The housing (1) is provided with a flow channel (16); A discharge screw (2) is inserted into the flow channel (16), the outer surface of the discharge screw (2) is provided with a thread (21) to drive the material to move when the discharge screw (2) rotates, and the discharge screw (2) is provided with a cavity (22); A heating component (3) is arranged in the cavity (22) and is used to heat the discharge screw (2).
2. The head discharge structure of the plastic pipe forming machine according to claim 1 is characterized in that: The heating component (3) comprises a first insulating layer (32), a heating layer (33), a connecting layer (34) and a second insulating layer (35); the first insulating layer (32) is connected to the inner wall of the discharge screw (2); the heating layer (33) is connected to the first insulating layer (32) to heat the discharge screw (2); the connecting layer (34) is used to connect a power source and the heating layer (33) to provide electrical energy to the heating layer (33); and the second insulating layer (35) is connected to the connecting layer (34) to prevent the connecting layer (34) from being exposed to the external environment.
3. The head discharge structure of the plastic pipe forming machine according to claim 2 is characterized in that: The heating component (3) further comprises a transfer tube (31), the outer wall of the transfer tube (31) being connected to the inner wall of the discharge screw (2), and the inner wall of the transfer tube (31) being connected to the outer wall of the first insulating layer (32).
4. The head discharge structure of the plastic pipe forming machine according to claim 3 is characterized in that: The heating component (3) further comprises a slip ring (36) and a brush (37); the slip ring (36) is electrically connected to the connection layer (34); and the brush (37) is used to connect a power source and the slip ring (36).
5. The head discharge structure of the plastic pipe forming machine according to claim 1 is characterized in that: It also comprises a driving assembly (4), wherein the driving assembly (4) is connected to the discharge screw (2) to drive the discharge screw (2) to rotate around an axis.
6. The head discharge structure of the plastic pipe forming machine according to claim 1 is characterized in that: The housing (1) further comprises a sealing cover (14), the sealing cover (14) being provided with a through hole for the discharge screw (2) to pass through, the sealing cover (14) being arranged in the flow channel (16), the outer wall of the sealing cover (14) being connected to the inner wall of the housing (1), and the inner wall of the sealing cover (14) being connected to the discharge screw (2).
7. The head discharge structure of the plastic pipe forming machine according to claim 6, characterized in that: A sealing ring (15) is arranged between the sealing cover (14) and the discharge screw (2), and the outer wall of the sealing ring (15) is coated with a lubricating coating.
8. The head discharge structure of the plastic pipe forming machine according to claim 1 is characterized in that: A discharge port (13) is provided at one end of the shell (1), and a plurality of feed ports (11) are provided at the top of the shell (1); the discharge port (13) and the plurality of feed ports (11) are both in communication with the flow channel (16) and the external environment.