Integrated heating electric heating tube structure and heating mold core assembly

Abstract

The utility model discloses an integrated heating electric heating tube structure and a heating mold core assembly, which belong to the field of molds, and comprise a tube body, a heating element and a heat conduction element, the tube body is internally provided with an accommodating cavity, one end of the accommodating cavity is open, the open end of the tube body is provided with a connecting element for positioning and installing the tube body, the heating element is installed in the accommodating cavity, and the heat conduction element is arranged in the accommodating cavity. The heat conduction piece is filled in the containing cavity, wraps and is connected to the outer side of the heating piece, and the heat conduction piece is used for transferring heat emitted by the heating piece to the pipe body. The heating piece is electrified to heat and transmits heat to the pipe body through the heat conducting piece, the pipe body can be inserted into the mold core with the hole and directly transmits the heat to the mold core, the connecting piece is arranged at one end of the pipe body and can position and install the pipe body to play a role in guiding the mold core, a transition piece does not need to be additionally arranged between the pipe body and the mold core, and the heat transmission efficiency can be improved. And the heating stability is improved, the device is suitable for a small-size detachable mold core structure, and the applicability is higher.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to an integrated heating electric heating tube structure and a heating mold core assembly. Background Technology

[0002] An electric heating element is a tubular electrical component consisting of a metal tube, a spiral resistance wire, and crystalline magnesium oxide powder. The high-temperature resistance wire is evenly distributed within a seamless stainless steel tube (metal tube), and the gaps are filled with crystalline magnesium oxide powder, which has excellent thermal conductivity and insulation properties. When current flows through the high-temperature resistance wire, the generated heat diffuses through the magnesium oxide powder to the surface of the metal tube, and then is transferred to the heated object or the air, achieving the heating purpose.

[0003] Electric heating elements are widely used in the mold industry, primarily for auxiliary heating of molds. In cable accessory mold structures, electric heating elements are mostly used to heat the mold core. Traditional heating methods involve creating a hole in the mold core with dimensions similar to the electric heating element's outer size, inserting the heating element into the hole, and heating the mold core through contact heat transfer. This method has high heat transfer efficiency, but it is only suitable for mold structures where the mold core is always fixed in the mold and cannot be disassembled during demolding. For mold structures where each mold core must be removed, auxiliary heating usually requires adding a transition piece with a positioning function between the mold core and the electric heating element. This transition piece has a hole with dimensions similar to the electric heating element's outer size. The tube is inserted into the hole, and the combination of the transition piece and the heating tube is then inserted into the heating hole of the mold core, forming a three-in-one combined heat transfer heating structure of the mold core, the transition piece, and the electric heating tube. The transition piece is fixed on the mold template and serves to fix the mold core. Although this structure solves the problem of guiding the mold core, there are two heat transfer processes. The heat is first transferred from the electric heating tube to the transition piece, and then from the transition piece to the surface of the mold core. This heat conduction method is inefficient and has a large heat loss, which has a significant impact on the heating stability and heat transfer efficiency. Moreover, this type of structure is only suitable for larger mold cores. Smaller specifications cannot meet the requirements due to insufficient design space. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an integrated heating electric heating tube structure and a heating mold core assembly, thus solving the problem.

[0005] An integrated heating electric heating tube structure according to an embodiment of the present invention includes:

[0006] The tube body has a receiving cavity with one end open, and the open end of the tube body is provided with a connector for positioning and installing the tube body.

[0007] A heating element is installed inside the accommodating cavity, and the heating element is used to generate heat when energized.

[0008] A heat-conducting element is filled in the accommodating cavity and is wrapped around and connected to the outside of the heating element. The heat-conducting element is used to transfer the heat emitted by the heating element to the tube body.

[0009] According to an embodiment of the present invention, an integrated heating electric heating tube structure has at least the following beneficial effects:

[0010] The heating element generates heat when energized, which is then transferred to the tube body via a heat-conducting component. The tube body can be inserted into a perforated mold core, directly transferring heat to the core. A connector is located at one end of the tube body, which positions the tube body and guides the mold core. This eliminates the need for a transition piece between the tube body and the mold core, improving heat transfer efficiency and heating stability. This embodiment is suitable for mold structures where the mold core needs to be disassembled. By eliminating the need for a transition piece between the tube body and the mold core, the diameter of the heating holes on the mold core can be made smaller, making it suitable for small-sized, detachable mold core structures and offering greater versatility.

[0011] According to some embodiments of the present invention, the integrated heating electric heating tube structure further includes a conductive wire, which is electrically connected to the heating element.

[0012] According to some embodiments of the present invention, the integrated heating electric heating tube structure further includes a mold template, the mold template being detachably connected to the connector, and the mold template being provided with a wire-passing hole for the conductive wire to pass through.

[0013] According to some embodiments of the present invention, the connector includes a connecting flange, the connecting flange is provided with a plurality of connecting holes for screws to pass through, and the mold template is provided with a plurality of threaded holes for screws to pass through, wherein the plurality of threaded holes correspond one-to-one with the plurality of connecting holes.

[0014] According to some embodiments of the present invention, the mold template is provided with a positioning groove for the connecting flange to extend into, and a plurality of threaded holes are located on the bottom wall of the positioning groove.

[0015] According to some embodiments of the present invention, the end of the tube body away from the connector is chamfered.

[0016] According to some embodiments of the present invention, a guide slope is provided at the end of the tube body away from the connector. The distance from the connection point of the guide slope and the side wall of the tube body to the end of the tube body away from the connector is in the range of 20mm-30mm. The angle between the vertical section of the guide slope and the axis of the tube body is in the range of 15°-20°.

[0017] According to some embodiments of the present invention, the heating element includes a resistance wire, which is arranged in a U-shape.

[0018] According to some embodiments of the present invention, the heat-conducting element includes magnesium oxide powder.

[0019] A heating mold core assembly according to an embodiment of the present invention includes:

[0020] The integrated heating electric heating tube structure;

[0021] The mold core has heating holes for inserting the tube body, and the connector protrudes from the heating holes.

[0022] A heating mold core assembly according to an embodiment of the present utility model has at least the following beneficial effects:

[0023] The heating element generates heat when energized, which is then transferred to the tube body via a heat-conducting component. The tube body can be inserted into a perforated mold core, directly transferring heat to the mold core. A connector is provided at one end of the tube body, which positions and guides the tube body to the mold core. This eliminates the need for a transition component between the tube body and the mold core, improving heat transfer efficiency and heating stability. This embodiment is applicable to mold structures where the mold core needs to be disassembled. Since a transition component between the tube body and the mold core is not required, the diameter of the heating holes on the mold core can be set smaller, making it suitable for small-sized detachable mold core structures and offering greater versatility.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 This is a schematic diagram of the integrated heating electric heating tube structure according to an embodiment of the present utility model.

[0027] Figure 2 This is a schematic diagram of the tube body of the integrated heating electric heating tube structure according to an embodiment of the present utility model.

[0028] Figure 3 A schematic diagram of the mold template for the integrated heating electric heating tube structure of this utility model embodiment;

[0029] Figure 4 This is a schematic diagram of the structure of the heating mold core assembly according to an embodiment of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of an existing electric heating tube.

[0031] Figure 6 This is a schematic diagram of the structure of a heating mold core assembly in the prior art.

[0032] Icon labels:

[0033] 100. Tube body; 110. Receiving cavity; 120. Connector; 121. Connecting hole; 130. Guide slope;

[0034] 200, Heating element; 300, Heat-conducting element; 400, Conductive wire;

[0035] 500. Mold template; 510. Wire guide hole; 520. Threaded hole; 530. Positioning groove;

[0036] 600, mold core; 610, heating hole;

[0037] 700. Transition parts;

[0038] a. The distance from the connection point between the guide ramp and the side wall of the pipe to the end of the pipe away from the connector; b. The angle between the vertical section of the guide ramp and the axis of the pipe. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They 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, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] See Figure 5 , Figure 5 This is a schematic diagram of a prior art electric heating tube structure. The electric heating tube includes a tube body 100, a heating element 200, and a heat-conducting element 300. The tube body 100 is a metal tube, the heating element 200 is a spiral resistance wire, and the heat-conducting element 300 is crystalline magnesium oxide powder. High-temperature resistance wires are uniformly distributed inside the metal tube, and crystalline magnesium oxide powder, which has good thermal conductivity and insulation properties, is filled in the gaps. When current flows through the high-temperature resistance wire, the generated heat diffuses through the magnesium oxide powder to the surface of the metal tube, and then is transferred to the heated object or the air, achieving the heating purpose.

[0043] See Figure 6 , Figure 6 This is a schematic diagram of the structure of a prior art heated mold core assembly. The mold core 600 has heating holes 610. A transition piece 700 is provided between the mold core 600 and the electric heating tube. The transition piece 700 has a hole with dimensions similar to the electric heating tube. The heating tube is inserted into the hole of the transition piece 700. The combination of the transition piece 700 and the heating tube is inserted into the heating hole 610 of the mold core 600, forming a three-in-one combined heat transfer structure of the mold core 600, the transition piece 700, and the electric heating tube. The transition piece 700 is fixed to the mold template 500, serving to fix the mold core 600. There are two heat transfer processes: heat is first transferred from the electric heating tube to the transition piece 700, and then from the transition piece 700 to the surface of the mold core 600. This heat conduction method is inefficient and has a large heat loss.

[0044] Please see Figure 1 , Figure 2 and Figure 3 This utility model discloses an integrated electric heating tube structure, comprising a tube body 100, a heating element 200, and a heat-conducting element 300. The tube body 100 has a receiving cavity 110, one end of which is open. A connector 120 is provided at the open end of the tube body 100 for positioning and mounting the tube body 100. The heating element 200 is installed within the receiving cavity 110 and is used to generate heat when energized. The heat-conducting element 300 fills the receiving cavity 110 and surrounds the outside of the heating element 200, transferring the heat emitted by the heating element 200 to the tube body 100.

[0045] The heating element 200 generates heat when energized, which is then transferred to the tube body 100 via the heat-conducting element 300. The tube body 100 can be inserted into the perforated mold core 600, directly transferring heat to the mold core 600. A connector 120 is provided at one end of the tube body 100, which positions and guides the mold core 600. This eliminates the need for a transition piece 700 between the tube body 100 and the mold core 600, improving heat transfer efficiency and heating stability. This embodiment is applicable to mold structures where the mold core 600 needs to be disassembled. By eliminating the need for a transition piece 700 between the tube body 100 and the mold core 600, the diameter of the heating holes 610 on the mold core 600 can be made smaller, making it suitable for small-sized detachable mold core 600 structures and offering greater versatility.

[0046] In some embodiments, see Figure 1 and Figure 2 The integrated heating element structure also includes a conductive wire 400, which is electrically connected to the heating element 200. The conductive wire 400 is used to connect an external power source to power the heating element 200. The length of the conductive wire 400 can be set according to actual usage requirements.

[0047] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The integrated heating element structure also includes a mold template (500), which is detachably connected to the connector 120. The mold template (500) has a wire hole 510 through which the conductive wire 400 passes. The tube body 100 is connected to the mold template 500 via the connector 120, and one end of the tube body 100 can be inserted into the heating hole 610 of the mold core 600 to fix the mold core 600.

[0048] In some embodiments, see Figure 1 , Figure 2 and Figure 3 The connector 120 includes a connecting flange with multiple connecting holes 121. The mold template 500 has multiple threaded holes 520, each corresponding to a connecting hole 121. Screws pass through the connecting holes 121 and are installed in the threaded holes 520. The connecting flange is connected to the mold template 500 by screws, ensuring a secure connection and facilitating easy assembly and disassembly.

[0049] The connecting flange is 15mm-20mm thick, and the connecting flange and the mold template are assembled with a clearance fit.

[0050] In some embodiments, see Figure 1 , Figure 2 and Figure 3The mold template 500 is provided with a positioning groove 530 for the connecting flange to extend into. Multiple threaded holes 520 are located on the bottom wall of the positioning groove 530. The connecting flange can be positioned and installed in the positioning groove 530, making the assembly of the connecting piece 120 and the mold template 500 more convenient.

[0051] In some embodiments, see Figure 1 and Figure 2 The end of the tube body 100 away from the connector 120 is chamfered. This reduces burrs at the end of the tube body 100, reduces friction between the tube body 100 and the inner wall of the heating hole 610 of the mold core 600, and facilitates the insertion of the tube body 100 into the heating hole 610 of the mold core 600.

[0052] In some embodiments, see Figure 1 and Figure 2 A guide slope 130 is provided at the end of the tube body 100 away from the connector 120. The distance from the connection point of the guide slope 130 and the side wall of the tube body 100 to the end of the tube body 100 away from the connector 120 is 'a', with a range of 20mm-30mm. The angle between the vertical section of the guide slope 130 and the axis of the tube body 100 is 'b', with a range of 15°-20°. The guide slope 130 facilitates the insertion of the tube body 100 into the heating hole 610 of the mold core 600.

[0053] In some embodiments, see Figure 1 The heating element 200 includes a resistance wire, which is arranged in a U-shape. The heat-conducting element 300 includes magnesium oxide powder. The integrated heating element has an outer layer made of copper or aluminum transition material 700 (tube body 100) instead of the traditional seamless stainless steel tube, and the inner layer is directly filled with magnesium oxide powder and resistance wire. The tube body 100 has an overall "T" shape.

[0054] See Figure 1 and Figure 4 According to an embodiment of the present invention, a heating mold core assembly includes an integrated heating electric heating tube structure and a mold core 600. The mold core 600 has heating holes 610 for inserting a tube body 100, with a connector 120 protruding from the heating holes 610. The clearance between the upper part of the tube body 100 and the heating holes 610 is 0.2mm-0.4mm, and the wall thickness of the upper part of the tube body 100 is 5mm-8mm.

[0055] The heating element 200 generates heat when energized, which is then transferred to the tube body 100 via the heat-conducting element 300. The tube body 100 can be inserted into the perforated mold core 600, directly transferring heat to the mold core 600. A connector 120 is provided at one end of the tube body 100, which positions and guides the mold core 600. This eliminates the need for a transition piece 700 between the tube body 100 and the mold core 600, improving heat transfer efficiency and heating stability. This embodiment is applicable to mold structures where all mold cores 600 need to be disassembled. Without the need for a transition piece 700 between the tube body 100 and the mold core 600, the diameter of the heating holes 610 on the mold core 600 can be made smaller, making it suitable for small-sized detachable mold core 600 structures and offering greater versatility.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0057] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. An integrated heating electric heating tube structure, characterized in that, include: The tube body has a receiving cavity with one end open, and the open end of the tube body is provided with a connector for positioning and installing the tube body. A heating element is installed inside the accommodating cavity, and the heating element is used to generate heat when energized. A heat-conducting element is filled in the accommodating cavity and is wrapped around and connected to the outside of the heating element. The heat-conducting element is used to transfer the heat emitted by the heating element to the tube body.

2. The integrated heating electric heating tube structure according to claim 1, characterized in that, It also includes conductive wires that are electrically connected to the heating element.

3. The integrated heating electric heating tube structure according to claim 2, characterized in that, It also includes a mold template, which is detachably connected to the connector, and the mold template is provided with a wire-passing hole for the conductive wire to pass through.

4. The integrated heating electric heating tube structure according to claim 3, characterized in that, The connector includes a connecting flange with multiple connecting holes for screws to pass through, and the mold template has multiple threaded holes for screws to pass through, with each threaded hole corresponding to one of the connecting holes.

5. The integrated heating electric heating tube structure according to claim 4, characterized in that, The mold template is provided with a positioning groove for the connecting flange to extend into, and a plurality of threaded holes are located on the bottom wall of the positioning groove.

6. The integrated heating electric heating tube structure according to claim 1, characterized in that, The end of the tube away from the connector is chamfered.

7. The integrated heating electric heating tube structure according to claim 6, characterized in that, The end of the tube away from the connector is provided with a guide slope. The distance from the connection point of the guide slope and the side wall of the tube to the end of the tube away from the connector is 20mm-30mm. The angle between the vertical section of the guide slope and the axis of the tube is 15°-20°.

8. The integrated heating electric heating tube structure according to claim 1, characterized in that, The heating element includes a resistance wire, which is arranged in a U-shape.

9. The integrated heating electric heating tube structure according to claim 1, characterized in that, The heat-conducting component includes magnesium oxide powder.

10. A heating mold core assembly, characterized in that, include: The integrated heating electric heating tube structure as described in any one of claims 1-9; The mold core has heating holes for inserting the tube body, and the connector protrudes from the heating holes.

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