Hot runner copper bush heating ring

Abstract

The utility model discloses a hot runner copper sleeve heating ring, which belongs to the technical field of hot runner heaters and comprises a heating inner circular tube, a heating ring is fixedly wound on the outer wall of the heating inner circular tube in a snakelike manner, a temperature sensing wire is fixedly wound on the outer wall of the heating tube in a snakelike manner, and a heat insulation layer is wrapped on the outer wall of the heating ring. A temperature cavity is formed between the heat preservation layer and the protruding heating ring, the outer wall of the heat preservation layer is wrapped with a copper outer ring, heat insulation connecting rings are fixedly connected to the upper end and the lower end of the heating inner round pipe and the upper end and the lower end of the copper outer ring in an inserted mode, and a high-temperature-resistant wire used for providing power connection for the heating ring and the temperature sensing wire is arranged on the outer wall of the copper outer ring. The heating inner circular pipe can heat the mold nozzle quickly and uniformly, heat conducted to the copper outer ring by the heating inner circular pipe is reduced by utilizing internal and external heat insulation, the energy consumption is reduced, the heating stability of the injection mold nozzle is improved, the quality of an injection product is improved, and meanwhile, the overall production cost of the heating ring is reduced.

Description

Technical Field

[0001] This utility model relates to the field of hot runner heater technology, specifically a hot runner copper sleeve heating ring. Background Technology

[0002] The main function of a mold hot runner heater is to heat the runner system, keeping the plastic in a molten state as it flows through the runner, thereby enabling continuous injection molding and improving production efficiency.

[0003] Currently, the mold copper sleeve heating ring is made of brass, with the inner and outer rings machined on a lathe, and the electric heating tube groove is engraved by CNC. The electric heating tube is embedded in the groove, and then the temperature sensing wire is embedded in it. It is used to heat the inlet of the hot runner of the injection mold. During use, the existing hot runner heating ring has the electric heating tube exposed and has a large heat loss. It also causes the mold in contact with it to heat up easily, requiring cooling water to cool it down, which leads to a decrease in the quality stability of plastic products. Utility Model Content

[0004] The purpose of this invention is to provide a hot runner copper sleeve heating ring to at least partially solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model provides the following technical solution: It includes a heating inner tube, a heating coil fixedly wound in a serpentine pattern on the outer wall of the heating inner tube, a temperature sensing wire fixedly wound in a serpentine pattern on the outer wall of the heating tube, an insulation layer wrapped around the outer wall of the heating coil, a temperature cavity formed between the insulation layer and the protruding heating coil, a copper outer ring wrapped around the outer wall of the insulation layer, and heat-insulating connecting rings fixedly inserted at both ends of the heating inner tube and the copper outer ring. A high-temperature resistant wire is provided on the outer wall of the copper outer ring for providing power connection to the heating coil and the temperature sensing wire.

[0006] Preferably, the heating inner tube is made of aluminum.

[0007] Preferably, the insulation layer is high-temperature resistant insulation cotton, and the thickness of the insulation layer is mm.

[0008] Preferably, the sheath of the high-temperature resistant conductor is a high-temperature insulating sheath.

[0009] Preferably, the heat-insulating connecting ring is made of polytetrafluoroethylene, and the heat-insulating connecting ring is fixed to the heating inner tube and the copper outer ring by high-temperature resistant adhesive.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model reduces heat loss from the heating inner tube by setting a heat insulation layer on the outer wall of the heating inner tube, making the heating inner tube heat the mold nozzle quickly and evenly. The heat insulation connecting ring solves the problem of direct metal-to-metal contact, improving service life. By using internal and external heat insulation, the heat conduction and heat radiation effect from the heating inner tube to the copper outer ring is reduced, making it more energy-efficient, improving the heating stability of the injection mold nozzle, and improving the quality of injection molded products.

[0012] 2. This utility model changes the previous heater made of a single copper tube material, and uses a variety of different components stacked together to achieve the heating effect on the injection nozzle, thereby reducing the overall production cost of the heater. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall three-dimensional half-section structure of this embodiment;

[0015] Figure 2 This is a schematic diagram of the overall three-dimensional structure of this embodiment;

[0016] Figure 3 This is a top view of the internal structure of this embodiment;

[0017] Figure 4 This is a schematic diagram of the winding structure of the heating layer and the temperature sensing wire in this embodiment;

[0018] Figure 5 This is an example. Figure 1 A schematic diagram of the enlarged A structure in the diagram.

[0019] The attached diagram lists the components represented by each number as follows:

[0020] 1. Heating inner tube; 2. Heating coil; 3. Temperature sensing wire; 4. Insulation layer; 5. Copper outer ring; 6. High-temperature resistant wire; 7. Insulation connecting ring; 8. Temperature cavity. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a hot runner copper sleeve heating ring, including a heating inner tube 1, a heating ring 2 fixedly and serpentinely wound on the outer wall of the heating inner tube 1, a temperature sensing wire 3 fixedly and serpentinely wound on the outer wall of the heating tube, a heat insulation layer 4 wrapped on the outer wall of the heating ring 2, a temperature cavity 8 formed between the heat insulation layer 4 and the protruding heating ring 2, a copper outer ring 5 wrapped on the outer wall of the heat insulation layer 4, heat insulation connecting rings 7 fixedly inserted at both the upper and lower ends of the heating inner tube 1 and the copper outer ring 5, and a high-temperature resistant wire 6 provided on the outer wall of the copper outer ring 5 for providing power connection to the heating ring 2 and the temperature sensing wire 3;

[0023] The inner heating tube 1 is heated by a heating coil 2 that is wound from top to bottom around its outer wall. The heating coil 2 is evenly distributed around the inner heating tube 1 from top to bottom, ensuring rapid and uniform heating. The inner heating tube 1 is made of aluminum, which reduces production costs compared to copper heating tubes. An insulation layer 4 is wrapped around the outer wall of the heating coil 2, which insulates the heated inner heating tube 1, reducing costs while improving heating and insulation effects. A temperature sensing wire 3 is installed on the outer wall of the inner heating tube 1 for temperature measurement. The outer wall of the insulation layer 4 is wrapped by a copper outer ring 5. A heat-insulating connecting ring 7 is inserted between the two ends of the inner heating tube 1 and the copper outer ring 5, preventing the inner heating tube 1 from contacting the copper outer ring 5. This internal and external heat insulation reduces heat conduction from the inner heating tube 1 to the copper outer ring 5, reducing energy consumption and improving the stability of the injection molding process, thus improving the quality of the injection molded products.

[0024] Preferably, the heating inner tube 1 is made of aluminum;

[0025] By using aluminum for the inner heating tube 1, the overall production cost of the heater is reduced while ensuring stable heating.

[0026] More preferably, the insulation layer 4 is high-temperature resistant insulation cotton, and the thickness of the insulation layer 4 is 1mm;

[0027] By using a circular tube formed from high-temperature resistant insulation cotton as the insulation layer 4, the insulation effect of the heating inner circular tube 1 wrapped inside the insulation layer 4 is improved, heat loss is reduced, and energy consumption is lowered.

[0028] Further preferably, the sleeve of the high-temperature resistant conductor 6 is a high-temperature insulating sleeve;

[0029] The high-temperature resistant wire 6 provides power to the heating coil 2 and the temperature sensing wire 3 respectively. The sleeve of the high-temperature resistant wire 6 is a high-temperature insulating sleeve that can withstand high temperatures and can be used in high-temperature environments.

[0030] Preferably, the heat insulation connecting ring 7 is made of polytetrafluoroethylene, and the heat insulation connecting ring 7 is fixed to the heating inner round tube 1 and the copper outer ring 5 by high temperature resistant adhesive.

[0031] Two heat-insulating connecting rings 7 are respectively inserted into the two ends of the heating inner tube 1 and the copper outer ring 5. The contact parts are fixed with high-temperature resistant glue, so that the heating inner tube 1 and the copper outer ring 5 are fixed together, and the heat insulation layer 4, the heating ring 2, and the temperature sensing wire 3 are respectively wrapped inside.

[0032] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] 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 hot runner copper sleeve heating ring, comprising a heating inner circular tube (1), characterized in that: The heating inner tube (1) has a heating coil (2) fixedly wound in a serpentine pattern on its outer wall. The heating inner tube has a temperature sensing wire (3) fixedly wound in a serpentine pattern on its outer wall. The heating coil (2) is wrapped with a heat insulation layer (4) for heat preservation. A temperature cavity (8) is formed between the heat insulation layer (4) and the protruding heating coil (2). The heat insulation layer (4) is wrapped with a copper outer ring (5). The upper and lower ends of the heating inner tube (1) and the copper outer ring (5) are fixedly connected with heat-insulating connecting rings (7) for reducing heat conduction. The outer wall of the copper outer ring (5) is provided with a high-temperature resistant wire (6) for providing power connection to the heating coil (2) and the temperature sensing wire (3).

2. The hot runner copper sleeve heating ring according to claim 1, characterized in that: The heating inner tube (1) is made of aluminum.

3. The hot runner copper sleeve heating ring according to claim 1, characterized in that: The insulation layer (4) is high-temperature resistant insulation cotton, and the thickness of the insulation layer (4) is 1mm.

4. The hot runner copper sleeve heating ring according to claim 1, characterized in that: The sleeve of the high-temperature resistant conductor (6) is a high-temperature insulating sleeve.

5. A hot runner copper sleeve heating ring according to claim 4, characterized in that: The heat insulation connecting ring (7) is made of polytetrafluoroethylene. The heat insulation connecting ring (7) is fixed to the heating inner tube (1) and the copper outer ring (5) by high temperature resistant glue.

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