Injection molding machine heater ring and injection molding machine using the same

Abstract

The utility model provides a kind of injection molding machine heating ring and injection molding machine using it, solve the problem that existing injection molding machine heating ring energy consumption is high, short life, the injection molding machine heating ring in it, including fixed shell and its inside several heating tubes, the fixed shell whole is cylindrical structure, the heating tube is graphene heating tube, the graphene heating tube is arranged in fixed shell with overall annular layout mode.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, and in particular to the heating coil of an injection molding machine and the injection molding machine using the same. Background Technology

[0002] Injection molding machines are core production equipment in the plastics processing industry. The main working principle of an injection molding machine is to heat the plastic to melt it, then use pressure to inject the molten plastic out, and then cool it.

[0003] The main structure used in the process of heating and melting plastic in an injection molding machine is the heating coil. To quickly reach the operating temperature of the injection molding machine, the heating coil needs to have a relatively high power. Therefore, for injection molding companies, the power of the injection molding machine's heating coil directly determines production costs.

[0004] Heating coils for injection molding machines have various structures, such as those using one or more resistance wires, or those using a ring-shaped arrangement of heating tubes. Heating coils using resistance wire structures (e.g., the thick-film chip heating plate and manufacturing method for injection molding machines disclosed in CN118082137A) will cause the entire injection molding machine to stop if the resistor melts, affecting the entire injection molding production process. Heating coils using heating tube structures (e.g., the infrared energy-saving electric heating coil for injection molding machine barrels disclosed in CN203357840U) also use resistance wires inside the heating tubes, resulting in high energy consumption and a shorter lifespan. Most of these use a series structure, so the failure of even one heating tube will cause a machine shutdown.

[0005] Graphene heating elements already exist, but they are made of a single piece of quartz glass with flat ends, making them unsuitable for direct installation in the heating coils of injection molding machines.

[0006] In summary, the injection molding machine industry currently suffers from high energy consumption, short lifespan of heating elements, and the fact that damage to these elements can easily lead to the shutdown of the entire injection molding production line, causing economic losses to enterprises. Summary of the Invention

[0007] The technical problem to be solved by this utility model embodiment is to provide an injection molding machine heating coil and an injection molding machine using the same, thereby solving the problems of high energy consumption and short lifespan of existing injection molding machine heating coils.

[0008] To solve the above-mentioned technical problems, this utility model provides a heating coil for an injection molding machine, including a fixed outer shell and a plurality of heating tubes inside it. The fixed outer shell is a cylindrical structure, and the heating tubes are graphene heating tubes arranged in a generally annular layout inside the fixed outer shell.

[0009] The graphene heating elements are connected in parallel in pairs, and the two graphene heating elements in each pair are connected in series.

[0010] The graphene heating tube contains a graphene heating strip, the surface of which faces the center of the fixed outer shell.

[0011] The graphene heating element includes a central quartz glass tube, a graphene heating strip placed inside the quartz glass tube, ceramic encapsulation heads at both ends of the quartz glass tube, and an electrode post at the center of the outer side of the ceramic encapsulation head. The electrode post is fixedly connected to the ceramic encapsulation head, and wires are led out from both ends of the graphene heating strip and connected to the electrode post.

[0012] The fixed outer shell is provided with a ceramic retaining ring and an electrode fixing ring. The inner side of the ceramic retaining ring is provided with a ceramic retaining groove corresponding to the position of the ceramic encapsulation head, so that the ceramic encapsulation head can be inserted into the ceramic retaining groove. The electrode fixing ring is provided with a conductive connector for each group of graphene heating tubes. The two ends of the conductive connector are respectively provided with clamping heads, which can clamp the electrode post. The conductive connector is connected to the electrode fixing ring in an insulating manner, or the electrode fixing ring is made of insulating material.

[0013] The clamping head uses two clamping plates to lock and fix the electrode post.

[0014] Between any two adjacent graphene heating tubes, there is also heat-resistant cotton filling the space formed by the ceramic retaining ring and the electrode fixing ring.

[0015] The fixed outer shell adopts a two-part openable structure.

[0016] The fixed outer shell is formed by the joining of two semi-circular parts.

[0017] This utility model also provides an injection molding machine that uses the injection molding machine heating coil described above.

[0018] The heating coil for injection molding machines and the injection molding machine using the same provided by this utility model can significantly reduce energy consumption by using graphene heating tubes. By designing ceramic encapsulation heads at both ends of the graphene heating tube, the two ends of the graphene heating tube can be fixed. Furthermore, by designing electrode posts and combining them with conductive connectors, portable and quick assembly and disassembly of the graphene heating tube can be achieved, and the electrode posts can be permanently fixed. Since all graphene heating elements are connected in series and then in parallel, the failure of any one set of graphene heating elements will not affect the normal operation of the other sets. This ensures continuous operation without shutting down the machine until the entire process is completed, at which point the damaged graphene heating element can be replaced. This improves overall production efficiency and reduces downtime losses for the company. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the heating coil of the injection molding machine according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of the heating coil of the injection molding machine according to an embodiment of the present invention; Figure 3 This is a longitudinal sectional view of the heating coil of the injection molding machine described in an embodiment of the present invention; Figure 4 This is a schematic diagram of the external structure of the graphene heating tube described in an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of the graphene heating tube described in an embodiment of the present invention; Figure 6 A schematic diagram of the connection structure of the electrode fixing ring, conductive connector and electrode post; Figure 7 A schematic diagram of the connection structure between the ceramic retaining ring and the ceramic encapsulation head; Figure 8 This is a structural layout diagram of the graphene heating strip inside the graphene heating tube; Figure 9 This is a schematic diagram showing the injection molding machine in the open state.

[0020] In the picture: 10-Fixed housing; 11-Ceramic retaining ring; 12-Electrode retaining ring; 13-Conductive connector; 20-Graphene heating element; 21-Quartz glass tube; 22-Graphene heating strip; 23-Ceramic encapsulation head; 24-Electrode post. Detailed Implementation

[0021] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0022] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] Figure 1 This is a schematic diagram of the external structure of the heating coil of the injection molding machine according to an embodiment of the present invention; as can be seen from the figure, the entire fixed outer shell is cylindrical in shape.

[0025] Figure 2 This is a schematic diagram of the internal structure of the heating coil of the injection molding machine according to an embodiment of the present utility model. The diagram shows the structural layout of the fixed outer shell 10 and the graphene heating tube 20. The number of graphene heating tubes 20 should be an even number. Depending on the actual needs, it can be designed to be 16, 24 or 32. The graphene heating tubes 20 are arranged in a ring inside the fixed outer shell 10.

[0026] Figure 3 This is a longitudinal cross-sectional view of the heating coil of the injection molding machine according to an embodiment of the present invention; as can be seen from the figure, the two ends of the graphene heating tube 20 are fixed by the ceramic retaining ring 11 and the electrode fixing ring 12 respectively, and two adjacent graphene heating tubes 20 form a group. Each group of graphene heating tubes 20 is fixed by the conductive connector 13 and connected in series. The other end of the graphene heating tube 20 is connected to the power supply through the electrode post.

[0027] Figure 4 This is a schematic diagram of the external structure of the graphene heating tube according to an embodiment of the present invention; it can be seen that the middle part is a quartz glass tube 21, and the two ends are respectively connected to ceramic encapsulation heads 23, and electrode posts 24 are connected to the outside of the ceramic encapsulation heads 23. Figure 5 This is a schematic diagram of the internal structure of the graphene heating tube according to an embodiment of the present invention; it can be seen from the figure that the electrode posts 24 at both ends are connected to the graphene heating strip 22 inside the quartz glass tube 21.

[0028] Figure 6The diagram shows the connection structure of the electrode fixing ring, conductive connector and electrode post; it can be seen from the figure that two adjacent graphene heating tubes 20 form a group, and each group of graphene heating tubes 20 is fixed by the conductive connector 13 and connected in series.

[0029] Figure 7 This is a schematic diagram of the connection structure between the ceramic retaining ring and the ceramic encapsulation head; as can be seen from the figure, the ceramic retaining ring 11 is connected to the ceramic encapsulation head 23 of the graphene heating tube 20 through the retaining groove.

[0030] Figure 8 This is a structural layout diagram of the graphene heating strip inside the graphene heating tube; as can be seen from the diagram, the graphene heating strip is arranged directly facing the center of the entire fixed outer shell 10. Example 1

[0031] like Figure 1-8 As shown, this utility model provides a heating coil for an injection molding machine, including a fixed outer shell 10 and several heating tubes inside it. The fixed outer shell 10 is generally cylindrical, and the heating tubes are graphene heating tubes 20, which are arranged in a generally annular layout within the fixed outer shell 10. Due to the use of graphene heating tubes 20, it can heat up quickly after being powered on, reducing energy loss in the heating process and improving energy utilization efficiency.

[0032] The graphene heating elements 20 are connected in parallel in pairs, with the two graphene heating elements 20 in each pair connected in series. By using pairs as pairs, multiple sets of structures can be set in parallel within a fixed housing. This ensures that if one set fails or is damaged, it does not affect the operation of the graphene heating elements in the other sets, allowing the machine to continue operating without interruption and avoiding downtime that could affect production efficiency.

[0033] Combination Figure 4-5 As shown, the graphene heating element 20 contains a graphene heating strip 22, the surface of which faces the center of the fixed outer casing 10. Due to the graphene heating strip... The graphene heating tube 20 includes a central quartz glass tube 21, a graphene heating strip 22 placed inside the quartz glass tube 21, ceramic encapsulation heads 23 at both ends of the quartz glass tube 21, and an electrode post 24 at the center of the outer side of the ceramic encapsulation head 23. The electrode post 24 is fixedly connected to the ceramic encapsulation head 23, and wires are led out from both ends of the graphene heating strip 22 and connected to the electrode post 24.

[0034] The fixed outer shell 10 is provided with a ceramic retaining ring and an electrode fixing ring. The inner side of the ceramic retaining ring is provided with a ceramic retaining groove corresponding to the position of the ceramic encapsulation head 23, so that the ceramic encapsulation head 23 can be inserted into the ceramic retaining groove. The electrode fixing ring is provided with a conductive connector corresponding to each group of graphene heating tubes 20. The two ends of the conductive connector are respectively provided with clamping heads, which can clamp the electrode post 24. The conductive connector is connected to the electrode fixing ring in an insulating manner, or the electrode fixing ring is made of insulating material.

[0035] The clamping head uses two clamping plates to lock and fix the electrode post 24, which can increase the contact area between the clamping head and the electrode post 24 and improve the fixing effect.

[0036] Between any two adjacent graphene heating tubes 20 ceramic encapsulation heads 23, heat-resistant cotton is also filled, and the heat-resistant cotton is inserted into the space formed by the ceramic retaining ring and the electrode fixing ring.

[0037] The fixed outer shell 10 adopts a two-lobed openable structure, which is a relatively conventional structure and can be implemented with reference to conventional heating coils.

[0038] The fixed outer shell is formed by the joining of two semi-circular parts. Example 2

[0039] like Figure 9 As shown, this utility model also provides an injection molding machine that uses the injection molding machine heating coil described above.

[0040] The heating coil for injection molding machines and the injection molding machine using the same provided by this utility model can significantly reduce energy consumption by using graphene heating tube 20. By designing ceramic encapsulation heads 23 at both ends of the graphene heating tube 20, the two ends of the graphene heating tube 20 can be fixed. Furthermore, through the design of electrode posts 24 and their combination with conductive connectors, portable and quick assembly and disassembly of the graphene heating tube 20 can be achieved, and the electrode posts 24 can be permanently fixed. Since all the graphene heating elements 20 are connected in series and then in parallel, when any one set of graphene heating elements 20 is damaged, it will not affect the normal operation of the other sets of graphene heating elements 20. This ensures continuous operation without stopping the machine until the entire process is completed, at which point the damaged graphene heating element 20 can be replaced. This can improve the overall production efficiency and reduce downtime losses for the company.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A heating coil for an injection molding machine, comprising a fixed outer shell and several heating tubes inside, characterized in that, The fixed outer shell is a cylindrical structure, and the heating element is a graphene heating element, which is arranged in a generally ring-shaped layout inside the fixed outer shell.

2. The heating coil for an injection molding machine according to claim 1, characterized in that, The graphene heating elements are connected in parallel in pairs, and the two graphene heating elements in each pair are connected in series.

3. The heating coil for an injection molding machine according to claim 1, characterized in that, The graphene heating tube contains a graphene heating strip, the surface of which faces the center of the fixed outer shell.

4. The heating coil for an injection molding machine according to claim 1, characterized in that, The graphene heating element includes a central quartz glass tube, a graphene heating strip placed inside the quartz glass tube, ceramic encapsulation heads at both ends of the quartz glass tube, and an electrode post at the center of the outer side of the ceramic encapsulation head. The electrode post is fixedly connected to the ceramic encapsulation head, and wires are led out from both ends of the graphene heating strip and connected to the electrode post.

5. The heating coil for an injection molding machine according to claim 4, characterized in that, The fixed outer shell is provided with a ceramic retaining ring and an electrode fixing ring. The inner side of the ceramic retaining ring is provided with a ceramic retaining groove corresponding to the position of the ceramic encapsulation head, so that the ceramic encapsulation head can be inserted into the ceramic retaining groove. The electrode fixing ring is provided with a conductive connector for each group of graphene heating tubes. The two ends of the conductive connector are respectively provided with clamping heads, which can clamp the electrode post. The conductive connector is connected to the electrode fixing ring in an insulating manner, or the electrode fixing ring is made of insulating material.

6. The heating coil for an injection molding machine according to claim 5, characterized in that, The clamping head uses two clamping plates to lock and fix the electrode post.

7. The heating coil for an injection molding machine according to claim 6, characterized in that, Between any two adjacent graphene heating tubes, there is also heat-resistant cotton filling the space formed by the ceramic retaining ring and the electrode fixing ring.

8. The heating coil for an injection molding machine according to claim 1, characterized in that, The fixed outer shell adopts a two-part openable structure.

9. The heating coil for an injection molding machine according to claim 1, characterized in that, The fixed outer shell is formed by the joining of two semi-circular parts.

10. An injection molding machine, characterized in that, Use the heating coil for the injection molding machine as described in any one of claims 1-9.

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