Heating device of extrusion molding machine

Abstract

The utility model relates to the technical field of extrusion molding machines, and solves the problems that waste heat generated by extrusion processing of a molding machine cannot be recycled, waste is caused, the temperature in an interlayer is reduced due to the influence of environment temperature, and the heating effect is not ideal. The extrusion molding machine heating device comprises an extrusion molding machine body, an extrusion pipe is arranged at one end of the extrusion molding machine body, an annular water tank is connected to the surface of the extrusion pipe in a sleeving mode, heating spring wires are arranged on the two sides of the interior of the annular water tank, and the heating spring wires are electrically connected with a temperature control module through wires. The temperature control module is arranged on the side face of the annular water tank. A circulating water pump is arranged on the other side of the annular water tank, and the water pumping end of the circulating water pump communicates with an L-shaped pipe; one end of the L-shaped pipe is communicated with the annular water tank, the water outlet end of the circulating water pump is connected with the special-shaped pipe in a penetrating mode, one end of the special-shaped pipe is connected with the spiral coil in a penetrating mode, and the spiral coil is coiled on the surface of the extrusion pipe.

Description

Technical Field

[0001] This utility model relates to the field of extrusion molding machine technology, specifically to a heating device for an extrusion molding machine. Background Technology

[0002] The hot glue heating device for a molding machine and a molding machine disclosed in CN220804134U include: a glue dissolving tank, which includes an inner wall and an outer wall, and the inner wall and the outer wall are enclosed to form a sandwich layer for containing a heat-conducting medium. The inner wall forms a cavity for containing glue material; and a heating tube, at least one of which is provided and extends into the sandwich layer for heating the heat-conducting medium in the sandwich layer.

[0003] It sets the glue container as a sandwich structure, and contains a heat-conducting medium in the sandwich. The heating medium is heated by extending a heating tube into the sandwich. The heat of the heating medium is used to heat the glue in the cavity, so that the glue is heated evenly.

[0004] However, the waste heat generated during the extrusion process of the molding machine cannot be recovered and utilized, resulting in waste. Furthermore, the temperature inside the interlayer drops due to the influence of ambient temperature, and the heating effect is not ideal. Therefore, this solution is not very efficient for heating the extrusion molding machine. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a heating device for an extrusion molding machine, which solves the problem that the waste heat generated during the extrusion process of the molding machine cannot be recovered and utilized, resulting in waste, and that the temperature inside the interlayer drops due to the influence of ambient temperature, leading to unsatisfactory heating effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heating device for an extrusion molding machine, comprising an extrusion molding machine body, an extrusion tube at one end of the extrusion molding machine body, an annular water tank sleeved on the surface of the extrusion tube, heating spring wires on both sides inside the annular water tank, the heating spring wires being electrically connected to a temperature control module via wires, the temperature control module being located on the side of the annular water tank; a circulating water pump is provided on the other side of the annular water tank, the pumping end of the circulating water pump being connected to an L-shaped pipe;

[0007] One end of the L-tube is connected to an annular water tank, the outlet of the circulating water pump is connected to a shaped pipe, one end of the shaped pipe is connected to a spiral coil, the spiral coil is coiled around the surface of the extrusion tube, the other end of the spiral coil is connected to a central pipe, and one end of the central pipe is connected to the annular water tank.

[0008] In a specific embodiment, the inner wall of the annular water tank is attached to the surface of the extrusion tube, and the heating spring wires are symmetrically distributed along the inner wall of the annular water tank.

[0009] In a specific embodiment, the spiral coil covers the length direction of the extruded tube with an equidistant spiral trajectory, and the shaped tube adopts a bent tube structure to achieve directional conversion.

[0010] In one specific embodiment, the temperature control module has a built-in temperature sensor, and the wire is equipped with a high-temperature resistant insulating sheath.

[0011] In a specific embodiment, a sealing flange is provided at the connection between the central pipe and the annular water tank, and the diameter of the spiral coil is adapted to the outer diameter of the extrusion pipe.

[0012] In one specific embodiment, a drain valve is provided at the bottom of the annular water tank, and an infrared radiation coating is sprayed onto the surface of the spiral coil.

[0013] Compared with the prior art, the present invention provides a heating device for an extrusion molding machine, which has the following beneficial effects:

[0014] The technical solution disclosed in this utility model achieves the active recovery and utilization of waste heat from extrusion processing through the structural design of an annular water tank fitting the extrusion tube, solving the problem of waste heat waste in traditional devices. By utilizing the tight fit between the inner wall of the annular water tank and the surface of the extrusion tube, the heat energy emitted by the extrusion tube is directly transferred to the water for preheating, improving heat recovery efficiency. The dual-stage heating layout of spiral coil and heating spring wire ensures temperature stability throughout the process, solving the problem of reduced heating efficiency caused by ambient temperature fluctuations. The preheated water is then reheated by the spiral coil equidistantly covering the extrusion tube, while the heating spring wire is symmetrically distributed to dynamically supplement the water with heat, forming a dual-mode temperature control system of waste heat recovery plus electric auxiliary heating. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the extrusion tube structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the spiral coil structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the main structure of the extrusion molding machine of this utility model.

[0020] In the diagram: 1. Extrusion molding machine body; 2. Extrusion tube; 3. Annular water tank; 4. Heating spring wire; 5. Temperature control module; 6. Circulating water pump; 7. L-shaped tube; 8. Irregularly shaped tube; 9. Spiral coil; 10. Central tube. Detailed Implementation

[0021] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0022] Figures 1-4 In one embodiment of this utility model, a heating device for an extrusion molding machine includes an extrusion molding machine body 1, an extrusion pipe 2 is provided at one end of the extrusion molding machine body 1, an annular water tank 3 is sleeved on the surface of the extrusion pipe 2, heating spring wires 4 are provided on both sides inside the annular water tank 3, the heating spring wires 4 are electrically connected to a temperature control module 5 through wires, the temperature control module 5 is provided on the side of the annular water tank 3; a circulating water pump 6 is provided on the other side of the annular water tank 3, and the water pump 6 is connected to an L-pipe 7 through its water pumping end.

[0023] The specific problem addressed in this embodiment is the inability to recover and utilize the waste heat generated during the extrusion process of the molding machine, leading to waste, and the unsatisfactory heating effect due to the temperature drop inside the jacket affected by ambient temperature. This utility model achieves active recovery and utilization of waste heat from extrusion processing through a structural design where the annular water tank 3 is tightly fitted to the extrusion tube 2, solving the problem of waste heat waste in traditional devices. By utilizing the tight fit between the inner wall of the annular water tank 3 and the surface of the extrusion tube 2, the heat energy emitted by the extrusion tube 2 is directly transferred to the water for preheating, improving heat recovery efficiency. The dual-stage heating layout of the spiral coil 9 and the heating spring wire 4 ensures temperature stability throughout the process, solving the problem of reduced heating efficiency caused by ambient temperature fluctuations. The preheated water is then reheated by the spiral coil 9 equidistantly covering the extrusion tube 2, while the heating spring wire 4 dynamically supplements the water through symmetrical distribution, forming a dual-mode temperature control system for waste heat recovery and electric auxiliary heating.

[0024] One end of L-pipe 7 is connected to an annular water tank 3, and the outlet of circulating water pump 6 is connected to a shaped pipe 8. One end of shaped pipe 8 is connected to a spiral coil 9, which is coiled around the surface of extrusion pipe 2. The other end of spiral coil 9 is connected to a central pipe 10, and one end of central pipe 10 is connected to an annular water tank 3. In this specific embodiment, the waste heat from processing of extrusion pipe 2 is conducted to an annular water tank 3 to preheat the internal water. Temperature control module 5 activates heating spring wire 4 for auxiliary heating. Circulating water pump 6 draws hot water and delivers it through L-pipe 7 to shaped pipe 8. After turning, it is input into spiral coil 9 for secondary heating while being wound around extrusion pipe 2 at equal intervals. Finally, the hot water returns to annular water tank 3 through central pipe 10 for circulation. The closed-loop water circuit realizes the recycling of heat energy, and dual-stage heating ensures temperature stability.

[0025] In this specific embodiment, the inner wall of the annular water tank 3 is attached to the surface of the extrusion tube 2, and the heating spring wires 4 are symmetrically distributed along the inner wall of the annular water tank 3;

[0026] The inner wall of the annular water tank 3 is tightly fitted with the extrusion pipe 2 to conduct heat, while the heating spring wires 4 are symmetrically distributed on the inner wall of the water tank to release radiant heat.

[0027] In this specific embodiment, the spiral coil 9 covers the length direction of the extrusion tube 2 with an equidistant spiral trajectory, and the shaped tube 8 adopts a bent tube structure to achieve direction conversion;

[0028] The spiral coil 9 extends spirally along the surface of the extrusion tube 2, covering the entire length of the tube body, and the irregular tube 8 changes the direction of water flow with a bent tube structure.

[0029] In this specific embodiment, the temperature control module 5 has a built-in temperature sensor, and the wires are equipped with high-temperature resistant insulating sheaths.

[0030] The temperature control module 5 detects the water temperature through a built-in sensor, and the high-temperature resistant insulated wire is connected to the heating spring wire 4 to transmit current.

[0031] In this specific embodiment, a sealing flange is provided at the connection between the central pipe 10 and the annular water tank 3, and the diameter of the spiral coil 9 is adapted to the outer diameter of the extrusion pipe 2;

[0032] The central pipe 10 is connected to the annular water tank 3 through a sealing flange to prevent leakage, and the diameter of the spiral coil 9 is precisely matched with the outer curved surface of the extruded pipe 2.

[0033] In this specific embodiment, a drain valve is provided at the bottom of the annular water tank 3, and an infrared radiation coating is sprayed on the surface of the spiral coil 9.

[0034] A drain valve is installed at the bottom of the annular water tank 3 to maintain the water circuit, and an infrared radiation coating on the surface of the spiral coil 9 enhances thermal efficiency.

[0035] Working principle: The residual heat from the extrusion tube 2 is preheated by contact heat transfer through the inner wall of the annular water tank 3. The temperature control module 5 starts the heating spring wire 4 to spirally heat and compensate for the water temperature based on the data from the built-in sensor. The circulating water pump 6 draws hot water and delivers it to the shaped tube 8 through the L-pipe 7. The water flows into the spiral coil 9 and wraps around the extrusion tube 2 in an equidistant spiral trajectory for secondary heating. The surface infrared radiation coating enhances heat penetration. Finally, the hot water flows back to the annular water tank 3 through the sealed flange of the central pipe 10. The drain valve at the bottom of the water tank provides a maintenance inlet.

[0036] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0037] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] 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. A heating device for an extrusion molding machine, comprising an extrusion molding machine body (1), characterized in that: The extrusion molding machine body (1) is provided with an extrusion tube (2) at one end, and an annular water tank (3) is sleeved on the surface of the extrusion tube (2). Heating spring wires (4) are provided on both sides inside the annular water tank (3). The heating spring wires (4) are electrically connected to the temperature control module (5) through wires. The temperature control module (5) is located on the side of the annular water tank (3). A circulating water pump (6) is provided on the other side of the annular water tank (3). The pumping end of the circulating water pump (6) is connected to the L pipe (7). One end of the L-tube (7) is connected to the annular water tank (3), the outlet end of the circulating water pump (6) is connected to the shaped tube (8), one end of the shaped tube (8) is connected to the spiral coil (9), the spiral coil (9) is coiled around the surface of the extrusion tube (2), the other end of the spiral coil (9) is connected to the central pipe (10), and one end of the central pipe (10) is connected to the annular water tank (3).

2. The heating device for an extrusion molding machine according to claim 1, characterized in that: The inner wall of the annular water tank (3) is attached to the surface of the extrusion tube (2), and the heating spring wire (4) is symmetrically distributed along the inner wall of the annular water tank (3).

3. The heating device for an extrusion molding machine according to claim 1, characterized in that: The spiral coil (9) covers the length direction of the extrusion tube (2) with an equidistant spiral trajectory, and the shaped tube (8) adopts a bent tube structure to achieve direction conversion.

4. The heating device for an extrusion molding machine according to claim 1, characterized in that: The temperature control module (5) has a built-in temperature sensor, and the wire is equipped with a high-temperature resistant insulating sheath.

5. The heating device for an extrusion molding machine according to claim 1, characterized in that: A sealing flange is provided at the connection between the central pipe (10) and the annular water tank (3), and the diameter of the spiral coil (9) is adapted to the outer diameter of the extrusion pipe (2).

6. The heating device for an extrusion molding machine according to claim 1, characterized in that: The bottom of the annular water tank (3) is equipped with a drain valve, and the surface of the spiral coil (9) is coated with an infrared radiation coating.

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