Efficient heating device for plastic forming machine

Abstract

The utility model discloses an efficient heating device for a plastic forming machine, which comprises a charging barrel, a spiral conveying roller and a heating element, a heating cavity is arranged in the charging barrel, the heating element is arranged in the heating cavity, an inner heating cavity is arranged in a roller shaft of the spiral conveying roller and is communicated with the heating cavity, and heat transfer can be effectively promoted. One end of the charging barrel is provided with a barrel opening, the barrel opening is fixedly connected with a sealing end cover, a heat conduction cavity is arranged in the sealing end cover, the heat conduction cavity is communicated with the rotating opening, the roller shaft of the spiral conveying roller is further provided with a plurality of groups of heat inlets, and the heat inlets are connected with the inner heat cavity. The energy consumption is reduced and the production quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of heating device technology, specifically a high-efficiency heating device for a plastic molding machine. Background Technology

[0002] With the continuous development of plastic processing technology, plastic molding machines have been widely used in the production of plastic products. One of the core functions of plastic molding machines is to heat plastic raw materials to a suitable flow state in order to carry out subsequent molding operations. In this process, the design of the heating device is crucial, and its performance directly affects processing efficiency, product quality and energy consumption.

[0003] In traditional plastic molding machine heating devices, heating elements are usually installed inside the barrel to transfer heat to the plastic inside the barrel. However, this heating method has significant heat loss during the heat transfer process, limited heat dissipation area, resulting in slow temperature rise and uneven heat distribution during the heating process, often leading to localized overheating or underheating. This uneven heat distribution not only affects the processing effect of the plastic, but may also lead to unstable quality of the plastic raw materials, or even the production of defective products. Utility Model Content

[0004] In view of the above-mentioned shortcomings in the existing technology, the purpose of this utility model is to provide a heating device that optimizes the heating structure, ensures uniform heat distribution, and improves heating efficiency.

[0005] The technical solution adopted by this utility model to achieve the above-mentioned objective is: a high-efficiency heating device for a plastic molding machine, including a material cylinder, a spiral conveying roller and a heating element. The material cylinder is provided with a heating chamber, the heating element is provided in the heating chamber, the spiral conveying roller is provided in the material cylinder, and the inner heating chamber is provided inside the roller shaft of the spiral conveying roller. The inner heating chamber is connected to the heating chamber.

[0006] In the above technical solution, one end of the barrel is provided with a barrel opening, a sealing end cap is fixedly connected to the barrel opening, a rotating port is provided at the center of the sealing end cap, a heat-conducting cavity is provided inside the sealing end cap, the heat-conducting cavity is connected to the rotating port, and a communication port is provided on the sealing end cap corresponding to the heating cavity.

[0007] The spiral conveying roller has multiple sets of heat inlets connected to the inner heating cavity on its roller shaft. The roller shaft of the spiral conveying roller is rotatably connected to the rotating port, and the heat conduction cavity is connected to the heat inlet.

[0008] In the above technical solution, rotating rings are fixedly connected to both sides of the heating inlet on the roller shaft of the spiral conveying roller, and ring platforms are fixedly connected to both sides of the rotating inlet on the sealing end cover. The ring platforms are provided with rotating grooves to cooperate with the rotating rings, and the rotating rings are rotatably connected in the rotating grooves.

[0009] In the above technical solution, a heat-conducting layer is fixedly connected to the cavity wall near the spiral conveying roller in the heating cavity, and a heat-insulating layer A is fixedly connected to the cavity wall away from the spiral conveying roller in the heating cavity;

[0010] A heat insulation layer B is fixedly connected to the cavity wall of the heat-conducting cavity;

[0011] A heat-insulating shaft is fixedly connected to the end of the spiral conveyor roller.

[0012] In the above technical solution, the thermally conductive layer is a graphene thermally conductive layer, and both the thermal insulation layer A and the thermal insulation layer B are aerogel thermal insulation layers.

[0013] In the above technical solution, the heating element is one of a heating wire heater, an electromagnetic induction heater, or a microwave heater.

[0014] The beneficial effects of this utility model are:

[0015] 1. The heat generated by the heating element can enter the internal heating cavity in the screw conveyor roller, thereby heating the screw conveyor roller as well. This allows the heat to be distributed more evenly throughout the entire barrel, which increases the heat dissipation area, optimizes the heating effect, and achieves rapid heating.

[0016] 2. Inside the heating chamber, a heat-conducting layer is provided on the chamber wall near the screw conveyor roller, while a heat insulation layer A is provided on the chamber wall away from the screw conveyor roller. The use of the heat-conducting layer can effectively improve the heat transfer efficiency and uniformity, while the heat insulation layer can effectively prevent heat loss and ensure that the heat is concentrated in the area that needs to be heated. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the present invention.

[0019] Figure 3 This is a schematic diagram of the structure of the sealing end cap and the spiral conveyor roller when disassembled in this utility model;

[0020] Figure 4 This is a schematic diagram of the internal structure of the heating chamber in this utility model.

[0021] In the diagram: 100 Material cylinder, 101 Heating chamber, 102 Sealed end cap, 103 Rotating port, 104 Heat conducting chamber, 105 Connecting port, 106 Ring platform, 200 Screw conveyor roller, 201 Inner heating chamber, 202 Heat inlet, 203 Rotating ring, 300 Heating element, 400 Heat conducting layer, 500 Insulation layer A, 600 Insulation shaft. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 —4. A high-efficiency heating device for a plastic molding machine, comprising a material cylinder 100, a spiral conveying roller 200 and a heating element 300, wherein a heating chamber 101 is provided inside the material cylinder 100, and a heating element 300 is provided inside the heating chamber 101. The heating element 300 may be one of a heating wire heater, an electromagnetic induction heater, or a microwave heater.

[0024] The material cylinder 100 is equipped with a spiral conveying roller 200, which can convey plastic raw materials by rotating the spiral conveying roller 200, and the roller shaft of the spiral conveying roller 200 is equipped with an internal heating cavity 201.

[0025] Furthermore, one end of the material cylinder 100 is provided with a cylinder opening, and a sealing end cap 102 is fixedly connected to the cylinder opening. The center of the sealing end cap 102 is provided with a rotating port 103, and a heat-conducting cavity 104 is provided inside the sealing end cap 102. The heat-conducting cavity 104 is connected to the rotating port 103. In addition, a communication port 105 is provided on the sealing end cap 102 corresponding to the heating cavity 101. The roller shaft of the screw conveyor roller 200 is provided with multiple sets of heat inlets 202 connected to the inner heating cavity 201. The roller shaft of the screw conveyor roller 200 is rotatably connected to the rotating port 103, and the heat-conducting cavity 104 is connected to the heat inlets 202. In this way, the inner heating cavity 201 and the heating cavity 101 can be connected. When the heating element 300 works and generates heat, the heat can fill the heating cavity 101 and the inner heating cavity 201. In this way, the screw conveyor roller 200 can also dissipate heat, increase the overall heat dissipation area, achieve rapid heating, and have a uniform temperature distribution.

[0026] Furthermore, rotating rings 203 are fixedly connected to both sides of the heating inlet 202 on the roller shaft of the screw conveyor roller 200, and ring platforms 106 are fixedly connected to both sides of the rotating inlet 103 on the sealing end cover 102. The ring platforms 106 are provided with rotating grooves to cooperate with the rotating rings 203, and the rotating rings 203 are rotatably connected in the rotating grooves. This structure can seal the rotating inlet 103, thereby preventing the plastic raw material from entering the inner heating chamber 201 after melting. Moreover, when heat can enter the inner heating chamber 201, the rotation requirements of the screw conveyor roller 200 can be guaranteed.

[0027] To further refine the description, a heat-conducting layer 400 is fixedly connected to the cavity wall of the heating cavity 101 near the spiral conveying roller 200. The heat-conducting layer 400 here is a graphene heat-conducting layer. The graphene heat-conducting layer 400 has excellent thermal conductivity and high temperature resistance, which helps to improve the heat conduction efficiency and enhance the uniformity of heat distribution.

[0028] A heat insulation layer A500 is fixedly connected to the cavity wall of the heating cavity 101 away from the screw conveyor roller 200. Of course, a heat insulation layer B is also fixedly connected to the cavity wall of the heat conduction cavity 104. A heat insulation shaft 600 is fixedly connected to the end of the roller shaft of the screw conveyor roller 200. The heat insulation shaft 600 is used to reduce heat transfer to the outside. It can be made of non-thermal conductive material, such as wood. Both the heat insulation layer A500 and the heat insulation layer B are made of aerogel. Aerogel has extremely low thermal conductivity, which can effectively reduce heat leakage to the outside, improve heat concentration, and accelerate the heating rate.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-efficiency heating device for a plastic molding machine, comprising a barrel (100), a spiral conveying roller (200), and a heating element (300), characterized in that: The material cylinder (100) is provided with a heating chamber (101) inside, the heating chamber (101) is provided with the heating element (300) inside, the material cylinder (100) is provided with the spiral conveying roller (200) inside, the roller shaft of the spiral conveying roller (200) is provided with an inner heating chamber (201) inside, and the inner heating chamber (201) is connected to the heating chamber (101).

2. The high-efficiency heating device for a plastic molding machine according to claim 1, characterized in that: One end of the material cylinder (100) is provided with a cylinder opening, and a sealing end cap (102) is fixedly connected to the cylinder opening. The center of the sealing end cap (102) is provided with a rotating port (103). A heat-conducting cavity (104) is provided inside the sealing end cap (102). The heat-conducting cavity (104) is connected to the rotating port (103). A communication port (105) is provided on the sealing end cap (102) corresponding to the heating cavity (101). The spiral conveying roller (200) has multiple sets of heat inlets (202) connected to the inner heat cavity (201) on its roller shaft. The roller shaft of the spiral conveying roller (200) is rotatably connected to the rotating port (103), and the heat conduction cavity (104) is connected to the heat inlet (202).

3. The high-efficiency heating device for a plastic molding machine according to claim 2, characterized in that: Rotating rings (203) are fixedly connected to both sides of the heating inlet (202) on the roller shaft of the spiral conveying roller (200). Annular platforms (106) are fixedly connected to both sides of the rotating inlet (103) on the sealing end cover (102). The annular platforms (106) are provided with rotating grooves to cooperate with the rotating rings (203). The rotating rings (203) are rotatably connected in the rotating grooves.

4. The high-efficiency heating device for a plastic molding machine according to claim 2, characterized in that: A heat-conducting layer (400) is fixedly connected to the cavity wall of the heating chamber (101) near the spiral conveying roller (200), and a heat-insulating layer A (500) is fixedly connected to the cavity wall of the heating chamber (101) away from the spiral conveying roller (200). A heat insulation layer B is fixedly connected to the cavity wall of the heat-conducting cavity (104); The end of the spiral conveying roller (200) is fixedly connected to a heat-insulating shaft (600).

5. The high-efficiency heating device for a plastic molding machine according to claim 4, characterized in that: The thermally conductive layer (400) is a graphene thermally conductive layer, and the thermal insulation layer A (500) and thermal insulation layer B are both aerogel thermal insulation layers.

6. The high-efficiency heating device for a plastic molding machine according to claim 1, characterized in that: The heating element (300) is one of a heating wire heater, an electromagnetic induction heater, or a microwave heater.

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