Preheating mechanism of plastic product twin-screw extruder
By introducing a preheating mechanism consisting of a main processing box, an insulating inner layer, and a heating pipe into the twin-screw extruder, the problem of poor hot-melt state caused by the raw materials not being preheated is solved, efficient preheating of the raw materials and a good hot-melt state are achieved, thereby improving production efficiency.
Patent Information
- Application Number
- CN202422571611.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-24
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-24
AI Technical Summary
When existing plastic products are produced in a twin-screw extruder, the raw materials are directly put into the machine without being effectively preheated, resulting in poor hot melting state. The existing box heating structure causes the raw materials to accumulate and cannot be preheated efficiently.
The preheating mechanism consists of a main processing box, an inner insulation layer, a heating pipe and a temperature measuring head. The heating pipe and the heating wire are controlled by the control panel and the temperature control mainboard to preheat the raw materials. The preheating efficiency is improved by combining with the extension column.
It achieves efficient preheating of raw materials, ensures good hot melt state, and improves the extrusion effect and efficiency of plastic product production.
Smart Images
Figure CN223339968U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic products, in particular to a preheating mechanism for a twin-screw extruder of plastic products. Background Art
[0002] Plastic products are a general term for household and industrial products made primarily from plastic. This encompasses products made using all processes, including injection molding and vacuum forming. Plastic is a type of synthetic polymer material with plasticity. Along with synthetic rubber and synthetic fibers, it forms one of the three most essential synthetic materials in daily life. Specifically, plastic is a material composed primarily of natural or synthetic resins, with various additives added. It can be molded into a specific shape under certain conditions of temperature and pressure, and retains its shape at room temperature.
[0003] For current plastic products produced using a twin-screw extruder structure, directly feeding the raw materials into the machine body will result in a poor extrusion state. The lack of preheating leads to a poor hot melt state due to direct heating. The current waste heat structure is a single box heating structure, which allows the raw materials to accumulate inside and be heated to form a preheating effect. The raw materials accumulated together cannot be preheated efficiently, resulting in an insufficient preheating effect. Utility Model Content
[0004] The purpose of the utility model is to provide a preheating mechanism for a twin-screw extruder for plastic products, so as to solve the problem raised in the above background technology that when the current plastic products are produced by the twin-screw extruder structure, the raw materials are directly put into the body, resulting in a poor extrusion state. The lack of preheating leads to a poor hot melt state of direct heating, and the current waste heat structure is a single box heating structure, which allows the raw materials to be accumulated inside and heated to form a preheating effect. The raw materials accumulated together cannot be preheated efficiently, resulting in an insufficient preheating effect.
[0005] To achieve the above objectives, the present invention provides the following technical solutions:
[0006] A preheating mechanism for a twin-screw extruder for plastic products comprises a main processing box, both sides of which are horizontally symmetrically welded with mounting side strips, one side of which is fixedly connected with a control panel, a feeding port is horizontally provided on the top surface of the main processing box, a sealing cover is horizontally connected with the inner side of the feeding port, a top box body is fixedly provided on the top surface of the main processing box, an extension pipe is vertically welded downwardly at the bottom end of the main processing box, a mounting flange is horizontally welded to the outer side of the extension pipe, a bottom through hole is provided at the bottom end of the main processing box, and a thermal insulation inner layer is fixedly provided on the inner side of the main processing box. The inner side of the thermal insulation inner layer is fixedly provided with a processing inner layer, the inner side wall of the processing inner layer is fixedly inlaid with a heating pipe, the inner side wall of the processing inner layer is evenly clamped with a temperature measuring head, the inner side of the processing inner layer is horizontally and evenly welded with an extension column, the inner side wall of the extension column is fixedly clamped with a heating wire, the inner side of the processing inner layer is vertically plugged with a rotating shaft, the outer side of the rotating shaft is welded with a transmission screw, the inner side of the top box body is fixedly provided with a transmission motor, the inner side of the control panel is fixedly clamped with a control mainboard, and the inner side of the control panel is fixedly clamped with a temperature control mainboard.
[0007] As a preferred embodiment of the present invention: there are two mounting side strips, and the two mounting side strips are parallel and symmetrically fixed to each other at the center lines on both sides of the main processing box. The top surfaces of the mounting side strips are evenly provided with through-hole structures, and the interior of the control panel is electrically connected to the control main board and the temperature control main board.
[0008] As a preferred embodiment of the present invention: the feeding port is horizontally penetrated and opened on the top surface of the main processing box near one side edge, and the interior of the feeding port is kept in communication with the interior of the processing inner layer, the top box body is fixedly connected and arranged at the center position of the top surface of the main processing box, and the top opening end of the extension pipe is fixedly connected and arranged at the bottom opening edge position of the bottom through hole, and they are kept in communication with each other internally.
[0009] As a preferred embodiment of the present invention: the mounting flange is horizontally fixedly arranged at the outer bottom end of the extension pipe, the bottom through hole is penetrated through the bottom center of the main processing box, and the thermal insulation inner layer is made of thermal insulation material.
[0010] As a preferred embodiment of the present invention: the heating pipe is spirally fixed on the inner wall of the processing inner layer, and the heating pipe and the temperature control main board are electrically connected to each other, there are multiple temperature measuring heads, and the multiple temperature measuring heads are evenly arranged on the inner wall of the processing inner layer, and the multiple temperature measuring heads are electrically connected to the temperature control main board, and the multiple extension columns are arranged in parallel with each other in a superimposed manner, and one end of the multiple extension columns is pointed in the direction of the rotating shaft.
[0011] As a preferred embodiment of the present invention: the top end of the rotating shaft is fixedly inserted into the center bearing on the top surface of the main processing box, and the bottom end vertically downward passes through the bottom through hole and extends to the inner side of the extension pipe, and the output end of the transmission motor is fixedly connected vertically downward at the top end of the rotating shaft.
[0012] Compared with the prior art, the beneficial effects of the present invention are:
[0013] The utility model sets the main processing box vertically at the top position of the machine body, fixes the mounting side strips at the designated position by bolts, then docks the bottom end of the extension pipe at the feed port position of the machine body, fixes the mounting flange by bolts, flips and opens the sealing cover on the top surface, and allows the raw materials to be fed into the processing inner layer through the feeding port. The flipping and closing of the sealing cover can seal the feeding port. After the control panel is set, the temperature control main board heats the heating pipe and the heating wire to a designated temperature, so that the internal temperature of the processing inner layer can preheat the raw materials. The extension column extends into the interior of the raw materials to further improve the preheating efficiency. Under the control of the control main board, the transmission motor rotates, and the output end drives the rotating rod to rotate, so that the external transmission screw drives the preheated raw materials downward into the interior of the extension pipe, and finally enters the interior of the machine body through the extension pipe for extrusion processing. The integrated structure makes installation and use more convenient, and the combination of overall temperature control and internal temperature control structure makes the preheating process more efficient and comprehensive. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Other features, objects and advantages of the present invention will become more apparent from the detailed description of the non-limiting embodiments with reference to the following drawings:
[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of a preheating mechanism of a twin-screw extruder for plastic products;
[0016] Figure 2 This is a structural schematic diagram showing the front view and cross-sectional connection details of the main processing box of a twin-screw extruder preheating mechanism for plastic products;
[0017] Figure 3 This is a schematic diagram of the top view and cross-sectional connection details of the main processing box of a twin-screw extruder preheating mechanism for plastic products;
[0018] Figure 4 This is a structural schematic diagram showing the front view and cross-sectional connection details of an extended pipe of a preheating mechanism of a twin-screw extruder for plastic products.
[0019] In the figure: 1. Main processing box; 2. Mounting side strips; 3. Control panel; 4. Feeding port; 5. Sealing cover; 6. Top box body; 7. Extension pipe; 8. Mounting flange; 9. Bottom through hole; 10. Insulation inner layer; 11. Processing inner layer; 12. Heating pipe; 13. Temperature measuring head; 14. Extension column; 15. Heating wire; 16. Rotating shaft; 17. Transmission screw; 18. Transmission motor; 19. Control main board; 20. Temperature control main board. DETAILED DESCRIPTION
[0020] See also Figure 1 In an embodiment of the present invention, a preheating mechanism for a twin-screw extruder for plastic products comprises a main processing box 1. Both sides of the main processing box 1 are horizontally and symmetrically welded with mounting side bars 2. A control panel 3 is fixedly connected to one side of the main processing box 1. There are two mounting side bars 2, and the two mounting side bars 2 are fixedly arranged parallel to and symmetrically with each other at the center lines of both sides of the main processing box 1. The top surface of the mounting side bars 2 is evenly provided with through-hole structures. The interior of the control panel 3 is electrically connected to the control main board 19 and the temperature control main board 20. A feeding port 4 is horizontally provided on the top surface of the main processing box 1. The inner side of the feeding port 4 is horizontally clamped with a sealing cover plate 5, the top surface of the main processing box 1 is fixedly provided with a top box body 6, and the bottom end of the main processing box 1 is vertically welded with an extension pipe 7 downward, the feeding port 4 is horizontally penetrated and opened at a position near one side of the top surface of the main processing box 1, and the interior of the feeding port 4 is kept in communication with the interior of the processing inner layer 11, the top box body 6 is fixedly connected and set at the center position of the top surface of the main processing box 1, the top opening end of the extension pipe 7 is fixedly connected and set at the bottom opening edge position of the bottom through hole 9, and they are kept in communication with each other, and the outer side of the extension pipe 7 is horizontally welded with a mounting flange 8;
[0021] See also Figure 2-4, In the embodiment of the present invention, a preheating mechanism of a twin-screw extruder for plastic products is provided, wherein a bottom through-hole 9 is provided at the bottom end of the main processing box 1, and a thermal insulation inner layer 10 is fixedly provided on the inner side edge of the main processing box 1, and a mounting flange 8 is fixedly provided at the outer bottom end position of the extension pipe 7 horizontally. The bottom through-hole 9 is penetrated and opened at the center position of the bottom end of the main processing box 1, and the thermal insulation inner layer 10 is made of thermal insulation material. The inner side edge of the thermal insulation inner layer 10 is fixedly provided with a processing inner layer 11, and the inner side wall of the processing inner layer 11 is fixedly inlaid with a heating pipe 12, and the inner side wall of the processing inner layer 11 is evenly clamped with a temperature measuring head 13, and the inner side edge of the processing inner layer 11 is evenly welded with an extension column 14. The heating pipe 12 is spirally fixed on the inner wall of the processing inner layer 11, and the heating pipe 12 is electrically connected to the temperature control mainboard 20. There are multiple temperature measuring heads 13, and multiple temperature measuring heads 13 are evenly arranged in the processing inner layer At the inner wall position of layer 11, multiple temperature measuring heads 13 are electrically connected to the temperature control main board 20, and multiple extension columns 14 are arranged in parallel with each other in a superimposed manner, and one end of the multiple extension columns 14 is arranged in the direction of the rotating shaft 16. The inner wall of the extension column 14 is fixedly connected with a heating wire 15, and the inner side edge of the inner processing layer 11 is vertically plugged with a rotating shaft 16. The outer edge of the rotating shaft 16 is welded with a transmission screw 17. The inner side edge of the top box body 6 is fixedly provided with a transmission motor 18. The top end of the rotating shaft 16 is fixedly plugged into the inside of the top center bearing of the main processing box 1, and the bottom end vertically downward passes through the bottom through hole 9 and extends to the inner side edge of the extension pipe 7. The output end of the transmission motor 18 is vertically fixedly connected to the top position of the rotating shaft 16. The inner side edge of the control panel 3 is fixedly connected with the control main board 19, and the inner edge of the control panel 3 is fixedly connected with the temperature control main board 20.
[0022] The working principle of this utility model is:
[0023] The main processing box 1 is vertically set at the top position of the machine body, and the mounting side strip 2 is fixed in the designated position by bolts. Then the bottom end of the extension pipe 7 is docked and set at the feed port position of the machine body, and the mounting flange 8 is fixed and installed by bolts. After the sealing cover 5 on the top is flipped open, the raw materials are fed into the processing inner layer 11 through the feeding port 4. The flipping and closing of the sealing cover 5 can seal the feeding port 4. After setting the control panel 3, the temperature control mainboard 20 heats the heating pipe 12 and the heating wire 15 to the specified temperature, so that the internal temperature of the processing inner layer 11 can preheat the raw materials, and the extension column 14 extends to the interior of the raw materials to further improve the preheating efficiency. Under the control of the control mainboard 19, the transmission motor 18 is rotated, and the output end drives the rotating rod 16 to rotate, so that the external transmission screw 17 drives the preheated raw materials downward into the interior of the extension pipe 7, and finally enters the interior of the machine body through the extension pipe 7 for extrusion processing.
[0024] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A preheating mechanism for a twin-screw extruder for plastic products, comprising a main processing box (1), characterized in that: The two sides of the main processing box (1) are horizontally symmetrically welded with mounting side strips (2), one side of the main processing box (1) is fixedly connected with a control panel (3), the top surface of the main processing box (1) is horizontally provided with a feeding port (4), the inner side of the feeding port (4) is horizontally connected with a sealing cover plate (5), the top surface of the main processing box (1) is fixedly provided with a top box body (6), the bottom end of the main processing box (1) is vertically welded with an extension pipe (7), the outer side of the extension pipe (7) is horizontally welded with a mounting flange (8), the bottom end of the main processing box (1) is provided with a bottom through hole (9), the inner side of the main processing box (1) is fixedly provided with a thermal insulation inner layer (10), and the inner side of the thermal insulation inner layer (10) is fixedly provided with a processing inner layer (11), the inner wall of the processing inner layer (11) is fixedly embedded with a heating pipe (12), the inner wall of the processing inner layer (11) is evenly clamped with a temperature measuring head (13), the inner side edge of the processing inner layer (11) is horizontally and evenly welded with an extension column (14), the inner wall of the extension column (14) is fixedly clamped with a heating wire (15), the inner side edge of the processing inner layer (11) is vertically plugged with a rotating shaft (16), the outer side edge of the rotating shaft (16) is welded with a transmission screw (17), the inner side edge of the top box body (6) is fixedly provided with a transmission motor (18), the inner side edge of the control panel (3) is fixedly clamped with a control main board (19), and the inner side edge of the control panel (3) is fixedly clamped with a temperature control main board (20).
2. A preheating mechanism for a twin-screw extruder for plastic products according to claim 1, characterized in that: The number of the mounting side strips (2) is two, and the two mounting side strips (2) are fixedly arranged parallel to and symmetrically with each other at the center lines of both sides of the main processing box (1). The top surfaces of the mounting side strips (2) are evenly provided with through-hole structures, and the interior of the control panel (3) is electrically connected to the control main board (19) and the temperature control main board (20).
3. A preheating mechanism for a twin-screw extruder for plastic products according to claim 1, characterized in that: The feeding port (4) is horizontally penetrated and opened on the top surface of the main processing box (1) near one side edge, and the interior of the feeding port (4) is kept in communication with the interior of the processing inner layer (11). The top box body (6) is fixedly connected and arranged at the center position of the top surface of the main processing box (1), and the top opening end of the extension pipe (7) is fixedly connected and arranged at the bottom opening edge position of the bottom through hole (9), and they are kept in communication with each other.
4. A preheating mechanism for a twin-screw extruder for plastic products according to claim 1, characterized in that: The mounting flange (8) is fixedly arranged horizontally at the outer bottom end of the extension pipe (7), the bottom through hole (9) is opened through the center of the bottom end of the main processing box (1), and the thermal insulation inner layer (10) is made of thermal insulation material.
5. A preheating mechanism for a twin-screw extruder for plastic products according to claim 1, characterized in that: The heating pipe (12) is fixedly arranged on the inner wall of the processing inner layer (11) in a spiral shape, and the heating pipe (12) and the temperature control main board (20) are electrically connected to each other. There are multiple temperature measuring heads (13), and the multiple temperature measuring heads (13) are evenly arranged on the inner wall of the processing inner layer (11). The multiple temperature measuring heads (13) are electrically connected to the temperature control main board (20). The multiple extension columns (14) are arranged in parallel in a superimposed manner, and one end of the multiple extension columns (14) is arranged to point in the direction of the rotating shaft (16).
6. A preheating mechanism for a twin-screw extruder for plastic products according to claim 1, characterized in that: The top end of the rotating shaft (16) is fixedly inserted into the center bearing on the top surface of the main processing box (1), and the bottom end vertically extends downward through the bottom through hole (9) to the inner side of the extension pipe (7). The output end of the transmission motor (18) is fixedly connected and arranged vertically downward at the top end of the rotating shaft (16).