Electromagnetic heating device for die sleeve of tire forming vulcanizer

Abstract

The utility model provides an electromagnetic heating device for a die sleeve of a tire forming vulcanizer, which comprises an annular heating box fixedly sleeved outside the die sleeve, a coil is wound in the heating box and filled with a heat insulator, and a coil circuit is connected to an electromagnetic heating controller; the die sleeve is provided with an annular heat conduction cavity filled with a heat conductor, and a temperature measuring device is installed on the die sleeve to measure the temperature of the heat conductor. The electromagnetic heating device for the die sleeve of the tire forming vulcanizer, provided by the utility model, can be used for uniformly, efficiently and uniformly heating a die, so that the production energy consumption is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of tire vulcanizing machine technology, specifically to an electromagnetic heating device for a tire shaping vulcanizing machine mold. Background Technology

[0002] Existing tire shaping vulcanizing machines are classified into steam pot type and hot plate type according to the mold heating mode. The steam pot type uses steam to heat the mold as a whole, while the hot plate type mainly heats the upper mold plate, lower mold plate, and mold sleeve separately. The modular heating of the hot plate type has lower energy consumption than the overall heating of the steam pot type and has a wider market prospect.

[0003] Currently, there are electric motor or electromagnetic heating solutions for the upper and lower hot plates, but heating solutions for the vulcanizing machine mold sleeves are still not perfect. For example, existing semi-steel and all-steel vulcanizing machines mainly use hot plate heating, where the upper and lower molds are heated by upper and lower hot plates respectively, while the mold sleeves are heated by a separate steam circulation system. However, steam heating has disadvantages such as high energy consumption, complex control, and large intermediate transmission losses, and cannot provide energy-efficient heating for the mold sleeves, which does not meet the further production needs of tire shaping vulcanizing machines.

[0004] Based on the above problems, it is necessary to propose an electromagnetic heating device for the mold sleeve of a tire shaping vulcanizing machine, which can heat the mold sleeve in an energy-saving and efficient manner and meet the requirement of uniform heating of tire molds. Utility Model Content

[0005] This utility model provides an electromagnetic heating device for the mold sleeve of a tire shaping vulcanizing machine, which can efficiently and uniformly heat the mold, reduce production energy consumption, and improve production efficiency.

[0006] To achieve the above-mentioned technical objectives and effects, this utility model solves the above-mentioned problems through the following technical solution:

[0007] An electromagnetic heating device for a tire shaping and vulcanizing machine mold includes an annular heating box fixed to the outside of the mold, a coil wound inside the heating box and filled with heat insulation material, and the coil circuit connected to an electromagnetic heating controller; the mold has an annular heat-conducting cavity filled with heat-conducting material, and a temperature measuring device is installed on the mold to measure the temperature of the heat-conducting material.

[0008] Furthermore, the coil uses copper wire wrapped with an insulating sleeve, and the coil is wound into multiple coil groups arranged longitudinally. The multiple coil groups are connected in series and share a common electromagnetic heating controller. The number of coil groups is 2-10, and each coil group includes 1-10 turns of wire.

[0009] Furthermore, the temperature measuring device is a thermocouple, and the probe of the thermocouple is inserted into the heat-conducting cavity through the mounting hole opened on the outer wall of the mold sleeve; the temperature measuring device is connected to the electromagnetic heating controller.

[0010] Furthermore, the heat insulation material is thermal insulation cotton or aluminum silicate cotton; the upper and lower sides of the heat conduction cavity are respectively provided with inlet and outlet holes, the inlet and outlet holes are sealed with plugs, and the heat conduction material inside the cavity is heat conduction oil.

[0011] The advantages and effects of this utility model are:

[0012] The proposed electromagnetic heating device for tire shaping and vulcanizing machine molds uses electromagnetic heating to replace the traditional steam heating method for heating the molds. A high-frequency, high-voltage current is passed through the coil to generate an electromagnetic field, which causes eddy currents inside the molds and generates heat. The heat conductor inside the molds ensures uniform heat conduction, meeting the requirement for uniform heating of tire molds.

[0013] This solution optimizes the magnetic field distribution and strength by rationally configuring the number of coil groups, turns, and connection methods, thereby improving mold heating efficiency and heat uniformity. The solution also improves the insulation structure between the coils and the heating chamber to ensure safety and prevent leakage, thus enhancing production safety. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the electromagnetic heating device for the tire shaping and vulcanizing machine mold of this utility model.

[0015] Drawing number identifier:

[0016] 1. Mold sleeve; 1-1. Heat conduction cavity; 2. Heating box; 2-1. Box body; 2-2. Box cover; 3. Coil; 4. Heat insulation body; 5. Electromagnetic heating controller; 6. Heat conductor; 7. Temperature measuring device; 8. Plug; 9. Upper heating plate; 10. Upper template; 11. Lower heating plate; 12. Lower template; 13. Inner mold. Detailed Implementation

[0017] The present invention will be further described below with reference to the embodiments, but the present invention is not limited to these embodiments.

[0018] The electromagnetic heating device for the tire shaping vulcanizing machine mold described in this embodiment is as follows: Figure 1As shown, the heating chamber 2 includes an annular heating box 2 that is fitted and fixed to the outside of the mold sleeve 1. The body 2-1 of the heating box 2 is fixed to the outer circle of the mold sleeve 1 with screws, and the cover 2-2 is fixed to the outside of the body 2-1 with screws. Multiple coil groups, arranged longitudinally, are wound with coils 3 inside the heating box 2. These coil groups are connected in series and connected to an electromagnetic heating controller 5, which controls the flow of current within the coils 3. Using an array of coil groups can create a segmented magnetic field, reducing distributed capacitance and increasing inductance, thus optimizing the magnetic field distribution and increasing magnetic field strength, thereby improving the heating efficiency and heat uniformity of the mold. The preferred number of coil groups is 2-10, with each coil group consisting of 1-10 turns of wire. The coils 3 are wrapped with an insulating sleeve to ensure safety and prevent leakage. The heating box 2 is filled with a heat insulation material 4 to prevent the coils from burning due to high mold temperatures. The heat insulation material 4 is made of insulating cotton or aluminum silicate cotton.

[0019] The mold 1 has an annular heat-conducting cavity 1-1 filled with a heat-conducting element 6, which is made of heat-conducting oil. The heat-conducting cavity 1-1 has an inlet and an outlet hole on its upper and lower sides, respectively, and plugs 8 are used to seal the inlet and outlet holes. The mold 2 is equipped with a temperature measuring device 7 to measure the temperature of the heat-conducting element 6 inside the heat-conducting cavity 1-1. In this embodiment, the temperature measuring device 7 is a thermocouple. The thermocouple probe is inserted into the heat-conducting cavity 1-1 through a mounting hole on the outer wall of the mold 1. The thermocouple circuit is connected to the electromagnetic heating controller 5, and the heating box 2 has a through hole for the thermocouple to pass through.

[0020] During the vulcanization process in the vulcanizing machine, the upper heating plate 9 heats the upper template 10, thereby heating the upper part of the inner mold 13; the lower heating plate 11 heats the lower template 12, thereby heating the lower part of the inner mold 13; and heating the mold sleeve 1 heats the outer circle of the inner mold 13. These three parts are collectively referred to as the external temperature. Adding the internal temperature of the central mechanism capsule, this constitutes the heating system for the entire tire vulcanization process. This invention heats the externally heated mold sleeve 1 by activating the electromagnetic heating controller 5, which supplies a high-frequency, high-voltage current to the coil 3. The coil 3 generates an electromagnetic field, causing eddy currents inside the mold sleeve 1, which then generate heat. The design features a reasonable internal structure of the heating box 2 and coil arrangement. Combined with the heat conduction effect of the heat conductor 6, this allows the mold sleeve 1 to heat up efficiently and at a uniform temperature, better meeting the requirements for uniform heating of the tire mold.

[0021] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations of these embodiments without departing from the principles and spirit of this utility model still fall within the protection scope of this utility model.

Claims

1. An electromagnetic heating device for a tire vulcanizing machine mold, characterized in that: It includes an annular heating box (2) that is fitted and fixed to the outside of the mold (1), a coil (3) is wound inside the heating box (2) and filled with a heat insulation body (4), and the coil (3) is connected to an electromagnetic heating controller (5); the mold (1) has an annular heat-conducting cavity (1-1) filled with a heat-conducting body (6), and a temperature measuring device (7) is installed on the mold (1) to measure the temperature of the heat-conducting body (6).

2. The electromagnetic heating device for the tire shaping and vulcanizing machine mold according to claim 1, characterized in that: The coil (3) is made of copper wire wrapped with an insulating sleeve. The coil (3) is wound into multiple coil groups arranged longitudinally. The multiple coil groups are connected in series and share an electromagnetic heating controller (5). The number of coil groups is 2-10 groups, and each coil group includes 1-10 turns of wire.

3. The electromagnetic heating device for the mold sleeve of the tire shaping and vulcanizing machine according to claim 1, characterized in that: The temperature measuring device (7) is a thermocouple, and the probe of the thermocouple is inserted into the heat-conducting cavity (1-1) through the mounting hole opened on the outer wall of the mold sleeve (1); the temperature measuring device (7) is connected to the electromagnetic heating controller (5).

4. The electromagnetic heating device for the mold sleeve of the tire shaping vulcanizing machine according to claim 1, characterized in that: The heat insulation body (4) is thermal insulation cotton or aluminum silicate cotton; the heat conduction cavity (1-1) has an inlet hole and an outlet hole on the upper and lower sides respectively, and the inlet hole and outlet hole are sealed with plugs (8). The heat conduction body (6) in the cavity is made of heat conduction oil.

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