Tire vulcanization mold and vulcanization machine

Abstract

The utility model provides a kind of tire vulcanization mould and vulcanizing machine, wherein, tire vulcanization mould includes: matrix, circumferential coil and end face coil, circumferential coil is set at the circumferential surface of matrix;End face coil is set at the end surface of matrix, and circumferential coil and end face coil are embedded in the inside of matrix, and circumferential coil and end face coil are all along the circumferential direction of matrix winding, and the winding direction of circumferential coil and end face coil is same.The utility model solves the problem of low heating efficiency of tire vulcanization mould in prior art.

Description

Technical Field

[0001] This utility model relates to the field of tire processing, and more specifically, to a tire vulcanizing mold and a vulcanizing machine. Background Technology

[0002] During the operation of a vulcanizing machine, the temperature control of the mold and the upper and lower hot plates plays a decisive role in the vulcanization quality of rubber products. Traditional heating methods, such as resistance wire heating, suffer from slow heating speed and low thermal efficiency. Resistance wire heating relies on heat conduction, transferring heat from the resistance wire to the mold and hot plates. This process results in significant heat loss and serious energy waste. Furthermore, resistance wires are prone to aging with prolonged use, requiring frequent replacement and increasing maintenance costs. In addition, traditional heating methods struggle to achieve precise temperature control, leading to significant temperature differences between different parts of the mold and hot plates. This results in uneven heating of the rubber products during vulcanization, causing localized over-vulcanization or under-vulcanization, severely impacting product quality.

[0003] Currently, although electromagnetic induction heating technology is used in the heating process of vulcanizing machine molds and upper and lower hot plates, it still has many shortcomings. For example, existing electromagnetic induction heating devices have poor adaptability to the complex shapes of vulcanizing machine molds and hot plates, failing to fully utilize the advantages of electromagnetic induction heating and affecting heating efficiency; the uniformity of heating by existing electromagnetic induction heating devices needs to be improved, easily leading to excessively high or low local temperatures in the mold and hot plates; and there is a lack of effective temperature monitoring and feedback mechanisms, making it difficult to achieve precise temperature control. Utility Model Content

[0004] The main objective of this invention is to provide a tire vulcanizing mold and a vulcanizing machine to solve the problem of low heating efficiency of existing tire vulcanizing molds.

[0005] To achieve the above objectives, according to one aspect of the present invention, a tire vulcanizing mold is provided, comprising: a base, a peripheral coil, and an end coil, wherein the peripheral coil is disposed on the peripheral side of the base; the end coil is disposed on the end face of the base, both the peripheral coil and the end coil are embedded inside the base, both the peripheral coil and the end coil are wound around the circumference of the base, and the winding directions of the peripheral coil and the end coil are the same.

[0006] Furthermore, the substrate includes a middle sleeve, a hot plate on the upper heating plate, and a lower heating plate. The middle sleeve has a first groove extending circumferentially along the middle sleeve. A peripheral coil is disposed in the first groove and does not protrude from the outer circumferential surface of the middle sleeve. The peripheral coil is wound multiple times along the circumferential direction of the middle sleeve. An upper heating plate and a lower heating plate are respectively disposed at both ends of the middle sleeve in the axial direction. The upper heating plate and / or the lower heating plate are provided with a second groove, and an end face coil is disposed in the second groove.

[0007] Furthermore, the first groove is provided on the outer peripheral side of the middle sleeve, and the opening side of the first groove is located on the outer peripheral side of the middle sleeve.

[0008] Furthermore, the end face coil includes lines that are continuously arranged along the circumference of the substrate and form a spiral structure. Along the radial direction of the substrate, the distance between segments of adjacent layers of lines first increases and then decreases.

[0009] Furthermore, the end face coil includes an outer coil portion and an inner coil portion. Along the radial direction of the substrate, the outer coil portion is located outside the inner coil portion. In the outer coil portion, the distance between segments of two adjacent layers of wire gradually increases, while in the inner coil portion, the distance between segments of two adjacent layers of wire gradually decreases.

[0010] Furthermore, the end face coil includes multiple edge heating sections, each edge heating section is arranged sequentially along the circumference of the substrate, the ends of each edge heating section are connected end to end, and the edge heating section has at least one layer of loop structure.

[0011] Furthermore, the end face coil includes a single coil, which includes a heating section and a transition section. The single coil is wound in a spiral shape to form an edge heating part. Adjacent heating sections are connected by a transition section, which protrudes from the plane where the heating section is located.

[0012] Furthermore, the end face coil also includes a central heating part with a loop structure, the central heating part is located at the center of the end face of the substrate, and each edge heating part is located around the central heating part, with one end of the central heating part docking with one of the edge heating parts.

[0013] Furthermore, the tire vulcanizing mold also includes a magnetic guide for conducting magnetism. The magnetic guide includes a first magnetic guide and a second magnetic guide. The first magnetic guide is disposed on the outer periphery of the peripheral coil along the circumferential direction of the substrate and blocks the peripheral coil. The second magnetic guide is located at the end face of the substrate and blocks the end face coil.

[0014] Furthermore, the tire vulcanizing mold also includes a magnetic leakage prevention component for preventing magnetic leakage. The magnetic leakage prevention component includes a first magnetic leakage prevention component and a second magnetic leakage prevention component. The first magnetic leakage prevention component is disposed on the outer peripheral side of the first magnetic conductor, and the outer peripheral side of the first magnetic leakage prevention component is flush with the outer peripheral side of the substrate. The second magnetic leakage prevention component is disposed on the side of the second magnetic conductor away from the end face coil and blocks the second magnetic conductor.

[0015] Furthermore, the substrate includes a middle sleeve, which has a first groove extending circumferentially along the middle sleeve. In the direction of radial distance from the central axis of the middle sleeve, the first groove includes a first segment and a second segment connected in sequence. Along the axial direction of the middle sleeve, the opening size of the second segment is larger than that of the first segment, and a stepped structure is formed between the two side edges of the second segment and the first segment. A peripheral coil is disposed in the first segment, and a first magnetic conductive element and a first anti-leakage magnetic element are disposed in the second segment and block the opening side of the first segment.

[0016] According to another aspect of the present invention, a vulcanizing machine is provided, including the above-described tire vulcanizing mold.

[0017] By applying the technical solution of this utility model, and simultaneously setting peripheral coils and end coils embedded inside the substrate, the heating efficiency and uniformity of the tire vulcanizing mold are improved. This allows the tire inside the vulcanizing cavity of the substrate to be heated quickly and uniformly, thereby improving the vulcanization quality of the tire. Specifically, in this embodiment, the peripheral coil is located on the peripheral side of the substrate, and the end coil is located on the end face of the substrate. This allows the area around the vulcanizing cavity inside the substrate to be heated simultaneously. The heat inside the vulcanizing cavity comes from multiple directions within the vulcanizing cavity, rather than solely from the end or periphery of the substrate, thus improving heat transfer efficiency and uniformity. Furthermore, the peripheral coils and end coils are not externally attached to the substrate but embedded inside, bringing the heating area closer to the vulcanizing cavity and shortening the heat transfer path. This further improves heat transfer uniformity and efficiency, thereby enhancing the vulcanization quality of the tire. Attached Figure Description

[0018] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0019] Figure 1 A schematic diagram of the structure of the tire vulcanizing mold of Embodiment 1 of this utility model is shown;

[0020] Figure 2 A schematic diagram of the structure of the middle sleeve, peripheral coil, first magnetic conductive element, and first anti-magnetic leakage element in Embodiment 1 is shown.

[0021] Figure 3 A schematic diagram of the middle sleeve in Embodiment 1 is shown;

[0022] Figure 4 A schematic diagram of the structure of the heat insulation panel in Embodiment 1 is shown;

[0023] Figure 5 A schematic diagram of the peripheral coil of Embodiment 1 is shown;

[0024] Figure 6 A schematic diagram of the end face coil and hot plate of Embodiment 1 is shown;

[0025] Figure 7 A schematic diagram of the hot plate in Embodiment 1 is shown;

[0026] Figure 8A schematic diagram of the structure of the end face coil, hot plate, second anti-leakage magnetic component, and second magnetic conductive component in Embodiment 2 is shown.

[0027] Figure 9 A schematic diagram of the hot plate in Embodiment 2 is shown.

[0028] The above figures include the following reference numerals:

[0029] 10. Base; 11. Middle sleeve; 111. First groove; 12. Heating plate; 121. Second groove; 20. Peripheral coil; 30. End face coil; 31. Outer ring; 32. Inner ring; 33. Edge heating part; 331. Heating section; 332. Transition section; 34. Center heating part; 41. First magnetic conductor; 42. Second magnetic conductor; 51. First anti-leakage magnetic component; 52. Second anti-leakage magnetic component; 60. Heat insulation plate; 61. Main body; 62. Fixing spacer; 63. Support ring. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0032] In this utility model, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0033] To address the problem of low heating efficiency in existing tire vulcanizing molds, this invention provides a tire vulcanizing mold and a vulcanizing machine, wherein the vulcanizing machine includes the tire vulcanizing mold described below.

[0034] Example 1

[0035] like Figures 1 to 7 The tire vulcanizing mold shown includes: a base 10, a peripheral coil 20, and an end coil 30. The peripheral coil 20 is disposed on the peripheral side of the base 10; the end coil 30 is disposed on the end face of the base 10. Both the peripheral coil 20 and the end coil 30 are embedded inside the base 10. Both the peripheral coil 20 and the end coil 30 are wound around the circumference of the base 10, and the winding directions of the peripheral coil 20 and the end coil 30 are the same.

[0036] This embodiment improves the heating efficiency and uniformity of the tire vulcanizing mold by simultaneously setting a peripheral coil 20 and an end coil 30, both embedded inside the base 10. This allows the tire inside the vulcanizing cavity of the base 10 to be heated quickly and uniformly, thereby improving the vulcanization quality of the tire. Specifically, in this embodiment, the peripheral coil 20 is located on the peripheral side of the base 10, and the end coil 30 is located on the end face of the base 10. This allows the area around the vulcanizing cavity inside the base 10 to be heated simultaneously, so that the heat inside the vulcanizing cavity comes from multiple directions, rather than solely from the end or periphery of the base 10. This improves heat transfer efficiency and uniformity. Furthermore, the peripheral coil 20 and the end coil 30 are not externally attached to the base 10 but embedded inside, bringing the heating area closer to the vulcanizing cavity and shortening the heat transfer path. This further improves heat transfer uniformity and efficiency, thereby enhancing the vulcanization quality of the tire.

[0037] It should be noted that the tire vulcanizing mold in this embodiment is used for tire vulcanization heating, but it is not limited to this. Depending on the actual situation, it can also be applied to heating scenarios of other objects.

[0038] In this embodiment, the base 10 includes a middle sleeve 11, an upper heating plate, and a lower heating plate. The middle sleeve 11 has a first groove 111 extending circumferentially along the middle sleeve 11. A peripheral coil 20 is disposed within the first groove 111, and the peripheral coil 20 does not protrude from the outer circumferential surface of the middle sleeve 11. The peripheral coil 20 is wound multiple turns circumferentially around the middle sleeve 11. An upper heating plate and a lower heating plate are respectively disposed at both ends of the middle sleeve 11 in the axial direction. The upper heating plate and / or the lower heating plate are provided with a second groove 121, and an end face coil 30 is disposed within the second groove 121. In this way, neither the peripheral coil 20 nor the end face coil 30 protrudes from the outer circumferential side or end face of the base 10, which helps to shorten the heat transfer path, reduce heat loss, and improve heating efficiency. At the same time, it also helps to improve the overall stability of the tire vulcanizing mold. It should be noted that the upper heating plate and the lower heating plate in this embodiment have similar structures and functions, and are both disposed at the ends of the middle sleeve 11. Therefore, both the upper heating plate and the lower heating plate are referred to as heating plate 12.

[0039] Specifically, in this embodiment, the base 10 is cylindrical, the middle sleeve 11 is also cylindrical, and the hot plate 12 is disc-shaped, with the discs located at both ends of the middle sleeve 11. The middle sleeve 11 and the hot plate 12 form a cylindrical shape. The base 10 has an annular vulcanizing cavity inside, and the central axis of the vulcanizing cavity is consistent with the central axis of the middle sleeve 11 and also with the central axis of the hot plate 12. The tire is vulcanized in the vulcanizing cavity. Thus, peripheral coils 20 or end-face coils 30 are provided on the periphery and upper and lower sides of the vulcanizing cavity, thereby enabling rapid heating of the vulcanizing cavity and improving the uniformity of heating. It should be noted that the upper and lower direction in this embodiment refers to the arrangement direction of the multiple hot plates 12. Figure 1 The up and down directions in the middle.

[0040] like Figure 3 As shown, in this embodiment, the first groove 111 is disposed on the outer periphery of the middle sleeve 11, and the peripheral coil 20 is disposed at the first groove 111, that is, on the outer periphery of the vulcanizing cavity. This allows the peripheral coil 20 to be embedded inside the middle sleeve 11 without protruding from the surface of the middle sleeve 11, thereby enabling the heat generated by electromagnetic induction to be quickly transferred into the vulcanizing cavity, shortening the heat transfer path and reducing heat loss. Simultaneously, on the outer side of the peripheral coil 20, along the circumference of the middle sleeve 11, a first magnetically conductive element 41 for guiding magnetism and a first magnetically leak-proof element 51 for shielding the magnetic field and preventing magnetic leakage can be disposed, to reduce magnetic field interference outside the heating area and improve heating efficiency and stability. Figure 2 As shown, the inner circumferential side of the first groove 111 in this embodiment is shaped like a circular side, so that the diameter of each coil of the peripheral coil 20 is also the same. Of course, depending on actual needs, the inner circumferential side of the first groove 111 can also be set to other shapes, and the peripheral coil 20 can be set to the corresponding shape accordingly. For example, when the temperature requirements in the vulcanizing chamber are different along the axial direction of the middle sleeve 11, the inner circumferential side of the first groove 111 can be set to the shape of the circumferential side of a frustum, and correspondingly, the peripheral coil 20 is also wound into the shape of the circumferential side of a frustum to meet the temperature requirements in the vulcanizing chamber.

[0041] In this embodiment, a second groove 121 is provided on the side of the hot plate 12 away from the vulcanizing chamber. The shape of the second groove 121 is the same as the winding shape of the end face coil 30, so that the end face coil 30 can be placed into the second groove 121. Figure 6 , Figure 7 As shown, the extension direction of the second groove 121 in this embodiment is consistent with the extension direction of the end face coil 30. When the extension direction of the end face coil 30 changes, the second groove 121 can be adjusted according to the actual situation to facilitate the placement and fixing of the end face coil 30.

[0042] In this embodiment, the first groove 111 is disposed on the outer periphery of the middle sleeve 11, and the opening side of the first groove 111 is located on the outer periphery of the middle sleeve 11. Thus, the peripheral coil 20 is disposed within the first groove 111, allowing it to be closer to the vulcanization cavity inside the middle sleeve 11 without occupying additional space. Specifically, the first groove 111 has an opening side for the peripheral coil 20 to enter and exit. The opening side can be disposed on the outer periphery of the middle sleeve 11, or it can be disposed on the upper or lower end faces of the middle sleeve 11. In this embodiment, the opening side is disposed on the outer periphery of the middle sleeve 11, making the opening side an annular circumferential side surface, thereby facilitating coil installation and maintenance. Compared to the method of disposing the opening side on the end face of the middle sleeve 11, this method of middle sleeve 11 manufacturing is simpler and more convenient, and helps to save costs. In an embodiment not shown, the opening side is located at the end face of the middle sleeve 11, that is, the opening side is located at the bottom end face or the top end face of the middle sleeve 11. The opening side is an annular plane, and the peripheral coil 20 can also be installed into the first groove 111 through the opening side without affecting the heating effect on the vulcanizing chamber.

[0043] In this embodiment, the end face coil 30 includes multiple edge heating portions 33, which are arranged sequentially along the circumference of the base 10. The ends of each edge heating portion 33 are connected sequentially. Each edge heating portion 33 has at least one U-shaped structure, thus dividing the heating area of ​​the hot plate 12 into multiple regions, thereby improving the temperature uniformity of each region of the hot plate 12. Specifically, the edge heating portions 33 in this embodiment are located near the edge of the hot plate 12. This embodiment has four edge heating portions 33, that is, four U-shaped edge heating portions 33 are arranged around the circumference of the hot plate 12. Along the direction near the center of the hot plate 12, each edge heating portion 33 has a tapered U-shaped structure. That is, the diameter of the hot plate 12 near the center of the hot plate 12 is smaller than the diameter of the hot plate 12 near the edge of the hot plate 12. Therefore, the extension length of the edge heating portion 33 near the center of the hot plate 12 is also smaller than the extension length near the edge of the hot plate 12. Depending on the size of the hot plate 12, the edge heating section 33 can be configured as a multi-layered U-shaped structure to improve the heating effect. In this way, each edge heating section 33 is adjacent to the next other and distributed in different areas around the hot plate 12, thereby improving the temperature uniformity of the hot plate 12 and improving the vulcanization effect of the tire.

[0044] In this embodiment, the end face coil 30 includes a single coil, which includes a heating section 331 and a transition section 332. The single coil is spirally wound to form an edge heating part 33. Two adjacent heating sections 331 are connected by the transition section 332, which protrudes from the plane where the heating section 331 is located, thereby realizing the connection between different heating sections 331. This allows the end face coil 30 to be wound from a single coil, thereby improving the heating efficiency of the end face coil 30. Specifically, in this embodiment, a single coil refers to each part of the end face coil 30 being wound from a single complete coil. Therefore, each edge heating section 33, in addition to the heating segment 331 wound in a U-shape, also has a transition segment 332 connecting two adjacent heating segments 331. The transition segment 332 connects to the heating segment 331 of the previous edge heating section 33, and then passes around the heating segment 331 from the side of the end face coil 30 away from the hot plate 12, connecting to the heating segment 331 of the next edge heating section 33, thereby connecting two adjacent heating segments 331 and reducing the influence of the transition segment 332 on induction heating. Correspondingly, the heating segment 331 is disposed in the second groove 121, while the transition segment 332 passes around the side of the second groove 121 away from the vulcanizing chamber, connecting to the next heating segment 331.

[0045] like Figure 6 As shown, in this embodiment, the end face coil 30 further includes a central heating part 34 with a loop structure. The central heating part 34 is located at the center of the end face of the base 10, and each edge heating part 33 is located around the central heating part 34. One end of the central heating part 34 is connected to one of the edge heating parts 33, thereby improving the temperature uniformity of the surface of the hot plate 12 and ensuring that the entire end face coil 30 is wound by a single coil. Specifically, in this embodiment, the four edge heating parts 33 are arranged in a small circle on the side near the center of the hot plate 12, and the central heating part 34 is located here. After a single coil is wound around the four edge heating parts 33 in sequence, it extends from the side of the edge heating parts 33 near the center of the hot plate 12 and connects to the central heating part 34. The central heating part 34 is spiral and can be wound multiple times. After a single coil is wound around the central heating part 34, it extends from the center of the hot plate 12 and extends radially along the hot plate 12 to the outside of the hot plate 12 to connect with other external components. In this way, the end face coil 30 is divided into multiple regions, and the heating of different positions of the hot plate 12 is adjusted according to the different positions of the hot plate 12 corresponding to the multiple regions, thereby improving the temperature uniformity of different positions of the hot plate 12.

[0046] In this embodiment, the tire vulcanizing mold further includes magnetically conductive components for guiding magnetism. These components include a first magnetically conductive component 41 and a second magnetically conductive component 42. The first magnetically conductive component 41 is disposed circumferentially around the outer periphery of the peripheral coil 20 and shields the peripheral coil 20. The second magnetically conductive component 42 is located at the end face of the base 10 and shields the end face coil 30. Thus, the magnetically conductive component can utilize its high permeability to guide and concentrate the magnetic field, improving the heating efficiency of the peripheral coil 20 and the end face coil 30. This results in a more uniform surface temperature of the tire vulcanizing mold and reduces the interference of the magnetic field on the surrounding environment. Furthermore, it protects the peripheral coil 20 and the end face coil 30, preventing the peripheral coil 20 from detaching from the first groove 111 and the end face coil 30 from detaching from the second groove 121.

[0047] In this embodiment, the tire vulcanizing mold further includes a magnetic leakage prevention component to prevent magnetic leakage. The magnetic leakage prevention component includes a first magnetic leakage prevention component 51 and a second magnetic leakage prevention component 52. The first magnetic leakage prevention component 51 is disposed on the outer peripheral side of the first magnetic conductive component 41, and the outer peripheral side of the first magnetic leakage prevention component 51 is flush with the outer peripheral side of the base 10. The second magnetic leakage prevention component 52 is disposed on the side of the second magnetic conductive component 42 away from the end face coil 30, and blocks the second magnetic conductive component 42.

[0048] In this embodiment, the base 10 includes a middle sleeve 11, which has a first groove 111 extending circumferentially along the middle sleeve 11. In the direction radially away from the central axis of the middle sleeve 11, the first groove 111 includes a first segment and a second segment connected sequentially. Along the axial direction of the middle sleeve 11, the opening size of the second segment is larger than that of the first segment, and a stepped structure is formed between the two side edges of the second segment and the first segment. A peripheral coil 20 is disposed within the first segment, and a first magnetic conductive element 41 and a first anti-leakage magnetic element 51 are both disposed within the second segment, blocking the opening side of the first segment. Specifically, both the second segment and the first segment are annular structures, and the second segment is farther from the central axis of the middle sleeve 11 than the first segment, thus positioning the second segment on the outer periphery of the first segment. Along the axial direction of the middle sleeve 11, the distance between the two sides of the second segment is greater than the distance between the two sides of the first segment, and the orthographic projection of the first segment onto the surface of the second segment lies within the range of the second segment. This creates a stepped structure at the connection between the second and first segments, facilitating the placement of the first magnetic conductive element 41 and the first anti-leakage magnetic element 51 within the second segment to shield the peripheral coil 20 within the first segment. Thus, by using the different opening sizes and stepped structure of the first and second segments, precise positioning and fixation of the peripheral coil 20 are achieved, ensuring the stability and heating efficiency of the coil during heating and effectively avoiding uneven heating caused by coil movement.

[0049] Specifically, in this embodiment, the first magnetic conductive element 41 is a ring-shaped silicon steel sheet, the size and shape of which are the same as the outer peripheral side of the second segment. This allows the first magnetic conductive element 41 to be embedded in the second segment. Along the circumference of the middle sleeve 11, the first magnetic conductive element 41 blocks the opening side of the first segment and the peripheral coil 20, thereby improving the heating efficiency of the peripheral coil 20. Optionally, the first magnetic conductive element 41 can be provided in 1-5 layers. The second magnetic conductive element 42 is provided on the side of the end face coil 30 away from the hot plate 12. The second magnetic conductive element 42 can be fixed to the hot plate 12 by bolt connection. Multiple second magnetic conductive elements 42 can be provided, and they are all made of silicon steel sheets. The second magnetic conductive element 42 includes multiple silicon steel sub-layers, which are stacked sequentially. Each silicon steel sub-layer includes multiple sub-segments, which are sequentially spliced ​​circumferentially to form a ring structure. A splicing line is formed between two adjacent sub-segments, and the splicing lines between two adjacent silicon steel sub-layers are staggered along the stacking direction. The seam between adjacent silicon steel sublayers forms an angle of 5-15°. In this embodiment, the silicon steel sublayer comprises three layers, all of which are silicon steel sheets, each layer consisting of eight pieces spliced ​​together. Of course, the first magnetic conductive element 41 and the second magnetic conductive element 42 can also be made of other high-permeability materials.

[0050] In this embodiment, the first anti-leakage magnetic component 51 is disposed within the second section and located on the outer periphery of the first magnetic conductive component 41. The outer periphery of the first anti-leakage magnetic component 51 is flush with the outer periphery of the middle sleeve 11, thereby preventing magnetic field leakage. The first anti-leakage magnetic component 51 can be in the form of a stainless steel sheet, having the same size and shape as the first magnetic conductive component 41, and being farther away from the central axis of the middle sleeve 11 compared to the first magnetic conductive component 41. Simultaneously, the stainless steel sheet is located within the second section and flush with the outer periphery of the second section, thus neither protruding from the outer periphery of the middle sleeve 11 nor recessed inward along the outer periphery of the middle sleeve 11, thereby giving the middle sleeve 11 a complete outer periphery. In this way, the shielding effect of the first anti-leakage magnetic component 51 on the magnetic field prevents magnetic field leakage, protects the safety of operators, and improves heating efficiency. Furthermore, the first anti-leakage magnetic component 51, located on the outside of the peripheral coil 20 and the first magnetic conductive component 41, also provides support and protection, thereby further improving the reliability and stability of the tire vulcanizing mold. Considering that the first magnetic conductive element 41 is located between the peripheral coil 20 and the first anti-leakage magnetic element 51, in order to ensure that the outer periphery of the silicon steel sheet is tightly attached to the inner periphery of the stainless steel sheet, the first magnetic conductive element 41 can be welded to the first anti-leakage magnetic element 51 to ensure that the magnetic field generated by the peripheral coil 20 does not leak, and at the same time improve the overall stability of the tire vulcanizing mold. Of course, the first anti-leakage magnetic element 51 is not limited to using non-magnetic stainless steel material, and other non-magnetic materials can also be used. The second anti-leakage magnetic element 52 can also be set as a stainless steel sheet, and the second anti-leakage magnetic element 52 is located on the side of the first magnetic conductive element 41 away from the hot plate 12. The shape of the second anti-leakage magnetic element 52 can be set as a disc to completely block the first magnetic conductive element 41 and the end face coil 30.

[0051] In this embodiment, the central axis of the peripheral coil 20, the central axis of the end coil 30, and the central axis of the base 10 are arranged to coincide. That is, the central axis of the peripheral coil 20, the central axis of the end coil 30, the central axis of the hot plate 12, and the central axis of the middle sleeve 11 are all aligned, thereby ensuring the symmetry of the tire vulcanizing mold structure, improving heating efficiency and temperature control accuracy, making the heating process more stable and the temperature control more precise, and effectively avoiding the problem of uneven heating caused by the misalignment of the coil and the base 10 axes.

[0052] like Figure 5 As shown, in this embodiment, the peripheral coil 20 is spirally wound around the inner sleeve 11 10-40 times. This spiral winding ensures that the peripheral coil 20 is evenly distributed within the first section, resulting in more uniform heating and more stable and reliable temperature control. This avoids uneven heating and temperature fluctuations caused by improper coil winding. Furthermore, the spirally distributed peripheral coil 20 effectively concentrates the magnetic field and enhances its strength. The magnetic field generated by each coil turn is superimposed on the magnetic field generated by the previous turn, significantly increasing the magnetic induction intensity in the central region of the coil and thus improving the efficiency of induction heating. Of course, the number of turns of the peripheral coil 20 in this embodiment is set according to the size of the tire and the size of the inner sleeve 11. When the size of the vulcanized object is different, the size of the inner sleeve 11 and the number of turns of the peripheral coil 20 can be adjusted accordingly.

[0053] In this embodiment, the peripheral coil 20 includes multiple sub-coils connected end-to-end, arranged along the axial direction of the middle sleeve 11, with a spacing of 10-50mm between adjacent sub-coils. This arrangement and spacing of the sub-coils allows for precise control of the mold heating area, improving heating efficiency and temperature control accuracy. Specifically, the peripheral coil 20 in this embodiment is essentially a single coil, arranged in a ring and wound as a whole, meaning it is formed by multiple turns of a single coil around the circumference of the first groove 111. This ensures that the current direction of each sub-coil is consistent, thereby improving the uniformity of magnetic induction intensity and, consequently, the temperature uniformity of the heating component surface in the middle of the peripheral coil 20, thus enhancing the heating efficiency of the peripheral coil 20. Furthermore, each coil is the same size to match the shape of the inner circumferential side of the first groove 111. The spacing between the sub-coils is also uniformly set to ensure uniform heat transfer to all locations in the vulcanizing cavity, thereby improving the tire vulcanization quality. Of course, the spacing between the sub-coils in this embodiment is set with consideration of the vulcanization requirements of the tire. When the vulcanized object is different, the spacing between the sub-coils can be adjusted accordingly to adjust the vulcanization temperature.

[0054] In this embodiment, the tire vulcanizing mold further includes a heat insulation plate 60, which is disposed within the first groove 111. The heat insulation plate 60 includes a main body 61, a fixing strip 62, and a support ring 63. The main body 61 has an annular structure and is located between the peripheral coil 20 and the first groove 111. The fixing strip 62 is disposed on the outer periphery of the main body 61 and has multiple fixing holes arranged along the axial direction of the middle sleeve 11. The peripheral coil 20 passes through the fixing holes. The support ring 63 is disposed on the outer periphery of the main body 61 and is located at the bottom and / or top of the main body 61 to support the peripheral coil 20. In this way, the good heat insulation performance of the heat insulation plate 60 reduces heat loss during the mold heating process, improves heating efficiency, and protects the peripheral coil 20 from high temperature, extending its service life.

[0055] Specifically, in this embodiment, the heat insulation plate 60 is configured as a ring structure, and the axial length of the heat insulation plate 60 along the middle sleeve 11 is consistent with the axial length of the first segment of the first groove 111 along the middle sleeve 11, so that the heat insulation plate 60 can be precisely embedded in the first segment of the first groove 111. The heat insulation plate 60 can be adhered to the first groove 111. Figure 2 As shown, the heat insulation plate 60 is located within the first section, and the inner circumference of the main body 61 is tightly attached to the inner circumference of the first groove 111. The peripheral coil 20 is disposed on the outer circumference of the main body 61, thereby confining the peripheral coil 20 within the first section while preventing direct contact between the peripheral coil 20 and the surface of the sleeve 11. This avoids the peripheral coil 20 being affected by high temperatures, thereby reducing its temperature and improving its service life. It also maximizes the protection of heat dissipation from the inside of the sleeve 11, reducing heat loss during the tire vulcanizing mold heating process and improving heating efficiency. The first magnetic conductive element 41 and the first anti-leakage magnetic element 51 are disposed within the second section, both located on the outer circumference of the peripheral coil 20, further improving the reliability of the tire vulcanizing mold structure. Figure 4As shown, multiple fixing spacers 62 are provided, and these spacers 62 are evenly distributed along the circumference of the main body 61. Each fixing spacer 62 has multiple fixing holes along the axial direction of the main body 61. The number of fixing holes in each fixing spacer 62 matches the number of sub-coils, that is, the number of turns of the peripheral coil 20 is equal to the number of fixing holes in each fixing spacer 62. This allows multiple sub-coils to be inserted one by one into the fixing holes. In this way, the coil is introduced from one end and wound around the outer circumference of the main body 61. Through the fixing spacers 62, the peripheral coil 20 is firmly fixed to the heat insulation plate 60, and the spacing between each sub-coil is reliably limited, thereby improving the stability and heating uniformity of the peripheral coil 20, and making the heating process more stable and reliable. The support ring 63 is provided at the edge of the main body 61, and is located on the inner circumferential surface of the main body 61 away from the first groove 111, thereby serving to support the peripheral coil 20. Figure 4 As shown, in this embodiment, the support ring 63 is only provided at the bottom of the main body 61. Depending on actual needs, the support ring 63 can also be provided at the top of the main body 61, or at both the bottom and top of the main body 61.

[0056] In this embodiment, the tire vulcanizing mold uses an electromagnetic heating power supply to power the peripheral coil 20 and the end coil 30. Optionally, the tire vulcanizing mold in this embodiment can also be equipped with a temperature detection component, such as a temperature sensor. The temperature sensor can be located inside the vulcanizing chamber, or at the peripheral coil 20 or the end coil 30. The temperature sensor provides feedback of the temperature signal to achieve temperature controllability. In this embodiment, the temperature detection component is evenly distributed on the surfaces of the middle sleeve 11 and the hot plate 12, with multiple high-precision temperature sensors arranged at an optimized spacing. The sensor distribution has been simulated and analyzed to ensure comprehensive and accurate monitoring of temperature changes at various parts of the middle sleeve 11 and the hot plate 12 for real-time temperature monitoring. For example, temperature sensors are densely arranged at locations where temperature differences are likely to occur, such as the corners and edges of the middle sleeve 11 and the center and edges of the hot plate 12.

[0057] The tire vulcanizing mold in this embodiment can also be equipped with a control system. The control system is electrically connected to the peripheral coil 20, the end coil 30, and the temperature detection component. Based on the temperature signal fed back by the temperature detection component, the heating power of the peripheral coil 20 and the end coil 30 is precisely controlled. The control system processes the data fed back by the temperature sensor and automatically adjusts the output power of the electromagnetic heating power supply to precisely control the temperature of the inner sleeve 11 and the surface of the hot plate 12. The control system can use PID control algorithm, fuzzy control algorithm, or other intelligent control strategies to dynamically adjust the power output according to the changes in the external temperature, ensuring stable and uniform temperature. To ensure the stability of the heating process, the control system can be designed with multiple temperature control stages, including a preheating stage, a stable heating stage, and a cooling stage. In the preheating stage, the outer surfaces of the inner sleeve 11 and the hot plate 12 are quickly heated to the set temperature; in the stable heating stage, a constant power output is maintained to ensure a constant temperature; in the cooling stage, the control system gradually reduces the power to avoid overheating. The dense and rationally arranged high-precision temperature sensors monitor the temperature in real time and comprehensively. The high-performance microprocessor of the control system, combined with the advanced power regulation module of the electromagnetic heating power supply, can quickly and accurately adjust the heating power according to temperature changes, so that the temperature fluctuation of the middle sleeve 11 and the hot plate 12 is controlled within a very small range, ensuring the temperature stability during the tire vulcanization process and improving product quality.

[0058] It should be noted that the peripheral coil 20 and end coil 30 can be customized for different shapes and sizes of the middle sleeve 11, upper hot plate, and lower hot plate. For the middle sleeve 11, the peripheral coil 20 is wound in a ring shape, ensuring a tight fit and uniform heating even on complex models. The end coil 30 at the upper and lower hot plates is wound in a U-shape according to the area and shape of the hot plate 12, ensuring uniform surface temperature. The peripheral coil 20 and end coil 30 are tightly fitted to the shape of the middle sleeve 11, and together with the magnetic guide and anti-leakage magnetic components, the magnetic field is evenly distributed, achieving uniform heating of all parts of the mold and hot plate 12, effectively avoiding localized overheating or underheating, and improving product consistency. The peripheral coil 20 and end coil 30 can use special high-temperature resistant, low-resistance wires to reduce power loss and improve heating efficiency. The magnetic guide and anti-leakage magnetic components reduce magnetic field interference outside the heating area, improving heating efficiency and stability.

[0059] Overall, the tire vulcanizing mold in this embodiment adopts the principle of electromagnetic induction heating. A first groove 111 is formed on the inner sleeve 11, and a heat insulation plate 60 is installed inside the first section of the first groove 111. A peripheral coil 20 is wound around the outer periphery of the heat insulation plate 60. A second groove 121 is formed on the hot plate 12, and an end-face coil 30 is installed inside the second groove 121. Thus, the peripheral coil 20 is located on the outer periphery of the inner sleeve 11, and the end-face coil 30 is located on the side of the upper and lower hot plates that are far apart from each other. Simultaneously, an electromagnetic heating power supply is used for control to achieve overall heating. The entire process has high heating efficiency, adjustable temperature, more uniform heating, and significantly saves energy, while also being safe and reliable. In this way, without changing the existing layout of the inner sleeve 11 and the hot plate 12, electromagnetic induction heating is used. Coils are wound on the surfaces of the hot plate 12 and the inner sleeve 11, and direct heating via eddy currents results in high heating power density, long service life, and high reliability. Electromagnetic induction heating is a non-contact heat transfer method, with high temperature accuracy, fast heating speed, and significantly reduced maintenance costs. Electromagnetic induction heating generates heat directly within the middle sleeve 11 and the hot plate 12, resulting in rapid heating. Compared to traditional resistance wire heating, it significantly shortens preheating time and improves production efficiency. Simultaneously, the specially designed peripheral coil 20 and end-face coil 30 effectively enhance thermal efficiency and reduce energy consumption. A fixing strip 62 is installed on the main body 61 of the heat insulation plate 60. The peripheral coil 20 is arranged in a ring, and the overall winding direction of the end-face coil 30 is either clockwise or counterclockwise with that of the peripheral coil 20, ensuring consistency in the coil current direction. This increases the magnetic induction intensity on the mold surface, further enhancing the efficiency of electromagnetic induction heating. The tire vulcanizing mold uses coils wound across the entire area, ensuring uniform heating temperature. Both the peripheral coil 20 and the end coil 30 are heated by a single, complete coil, reducing the number of electromagnetic heaters and saving on heater costs. Furthermore, the middle sleeve 11, upper heating plate, and lower heating plate can each be heated by independent heating units, allowing for individual control of the peripheral coil 20 and end coil 30, thus improving the flexibility of the tire vulcanizing mold. The middle sleeve 11 has slots, and the coils are placed inside these slots, bringing them closer to the tread blocks that directly heat the tire, resulting in higher heating efficiency.

[0060] The tire vulcanizing mold of this embodiment has been verified through electromagnetic heating simulation. Compared with traditional steam heating and electric heating, the heating efficiency is significantly improved and energy consumption is significantly reduced. Magnetic flux density map verification shows that the magnetic flux density is mainly concentrated in the distribution positions of the peripheral coil 20 and the end coil 30, and the magnetic shielding effect of the surface anti-leakage magnetic components and magnetic conductive components is good. The tire vulcanizing mold of this embodiment can be applied to the vulcanization of various vulcanizing machines, such as semi-steel tires, all-steel tires, and engineering tire vulcanizing machines. Temperature map verification shows that the temperature difference can be controlled within 3℃, and the temperature uniformity is good.

[0061] Example 2

[0062] Unlike Embodiment 1, the winding method of the end face coil 30 in this embodiment is different.

[0063] like Figure 8 As shown, in this embodiment, the end face coil 30 includes lines that are continuously arranged along the circumference of the base 10 to form a spiral structure. Along the radial direction of the base 10, the distance between segments of adjacent layers of lines first increases and then decreases, thereby ensuring the temperature uniformity of the hot plate 12 surface and improving the uniformity of heating the vulcanizing chamber. Specifically, in this embodiment, the end face coil 30 is wound multiple times along the circumference of the hot plate 12 from the edge of the second groove 121 to the center of the second groove 121, and finally leads out from the center of the second groove 121. The spacing between adjacent lines is adjusted according to the decreasing distance of the coil from the center of the second groove 121, thereby ensuring the temperature uniformity between different positions of the hot plate 12 and improving the vulcanization quality of the tire.

[0064] In this embodiment, the end-face coil 30 includes an outer coil portion 31 and an inner coil portion 32. Along the radial direction of the base 10, the outer coil portion 31 is located outside the inner coil portion 32. Within the outer coil portion 31, the distance between segments of adjacent layers of lines gradually increases, while within the inner coil portion 32, the distance between segments of adjacent layers of lines gradually decreases. This adjustment of the spacing between adjacent lines ensures the temperature uniformity of the hot plate 12 surface, thereby ensuring temperature uniformity throughout the vulcanizing chamber and improving the tire vulcanization quality. Specifically, in the outer coil portion 31, the arrangement of lines gradually becomes sparser along the direction close to the center of the hot plate 12, while in the inner coil portion 32, the arrangement of lines gradually becomes denser along the direction close to the center of the hot plate 12. A heat-insulating element can be provided on the side of the end-face coil 30 away from the second groove 121. After the line is wound, it is led out from the center of the hot plate 12 towards the side away from the second groove 121, passing through the heat-insulating element and connecting to an external device. Optionally, the heat-insulating element can be made of insulating cotton or the like to reduce heat loss. Figure 9 As shown, the shape of the second groove 121 matches the shape of the end face coil 30. It also extends along the circumference of the hot plate 12 and forms multiple ring grooves. Each sub-groove is arranged radially along the hot plate 12, and the spacing between each sub-groove first increases and then decreases along the direction close to the center of the hot plate 12.

[0065] It should be noted that "multiple" in the above embodiments refers to at least two.

[0066] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0067] 1. This technology solves the problem of low heating efficiency of tire vulcanization molds in existing technologies;

[0068] 2. By simultaneously setting peripheral coils and end coils, both embedded inside the base, the heating efficiency and uniformity of the tire vulcanization mold are improved, thereby enabling the tire in the vulcanization cavity inside the base to be heated quickly and uniformly, thus improving the vulcanization quality of the tire.

[0069] 3. This allows the area around the vulcanization cavity inside the substrate to be heated simultaneously, so that the heat inside the vulcanization cavity comes from multiple directions within the vulcanization cavity, rather than solely from the ends or periphery of the substrate, thereby improving heat transfer efficiency and heat transfer uniformity.

[0070] Obviously, the embodiments described above are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0071] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0072] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0073] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tire vulcanization mold characterized by, The application relates to a heating element for a heating device, comprising: a base body (10); a circumferential coil (20) arranged at a circumferential surface of the base body (10); an end face coil (30) arranged at an end face of the base body (10), the circumferential coil (20) and the end face coil (30) are embedded in the base body (10), the circumferential coil (20) and the end face coil (30) are wound along a circumferential direction of the base body (10), and the circumferential coil (20) and the end face coil (30) are wound in the same direction.

2. The tire curing mold according to claim 1, wherein, The base body (10) comprises: a middle sleeve (11) having a first groove (111) extending along a circumferential direction of the middle sleeve (11), the circumferential coil (20) is arranged in the first groove (111), and the circumferential coil (20) does not protrude from an outer circumferential surface of the middle sleeve (11), the circumferential coil (20) is wound along a circumferential direction of the middle sleeve (11) for multiple turns; upper and lower heat plates, the middle sleeve (11) is provided with the upper and lower heat plates at two axial ends thereof, the upper and / or lower heat plates are provided with a second groove (121), and the end face coil (30) is arranged in the second groove (121).

3. The tire curing mold according to claim 2, wherein, The first groove (111) is arranged at an outer circumferential side of the middle sleeve (11), and an opening side of the first groove (111) is located at an outer circumferential surface of the middle sleeve (11).

4. The tire curing mold of claim 1 wherein, The end face coil (30) comprises wire lines, the wire lines are continuously arranged along a circumferential direction of the base body (10) and form a spiral structure, and along a radial direction of the base body (10), distances between segments of adjacent two layers of the wire lines first increase and then decrease.

5. The tire curing mold according to claim 4, wherein, The end face coil (30) comprises an outer coil portion (31) and an inner coil portion (32), along a radial direction of the base body (10), the outer coil portion (31) is located outside the inner coil portion (32), in the outer coil portion (31), distances between segments of adjacent two layers of the wire lines gradually increase, and in the inner coil portion (32), distances between segments of adjacent two layers of the wire lines gradually decrease.

6. The tire curing mold according to claim 1, wherein, The end face coil (30) comprises a plurality of edge heating portions (33), the edge heating portions (33) are sequentially arranged along a circumferential direction of the base body (10), end portions of the edge heating portions (33) are sequentially connected in a head-to-tail manner, and the edge heating portions (33) have at least one layer of meander structure.

7. The tire vulcanization mold according to claim 6, wherein The end face coil (30) comprises a single coil, the single coil comprises a heating segment (331) and a transition segment (332), the single coil is spirally wound and forms an edge heating portion (33), two adjacent heating segments (331) are connected through the transition segment (332), and the transition segment (332) protrudes from a plane where the heating segment (331) is located.

8. The tire curing mold according to claim 6, wherein, The end face coil (30) further comprises a center heating portion (34) having a meander structure, the center heating portion (34) being located at the center of the end face of the base body (10), and each of the edge heating portions (33) being located at the circumferential side of the center heating portion (34), one end of the center heating portion (34) being butted against one of the edge heating portions (33).

9. The tire curing mold according to claim 1, wherein, The tire vulcanization mold further comprises a magnetic flux guide for guiding magnetic flux, the magnetic flux guide comprising: a first magnetic flux guide (41) disposed at the outer circumferential side of the circumferential side coil (20) along the circumference of the base body (10) and shielding the circumferential side coil (20); a second magnetic flux guide (42) located at the end face of the base body (10) and shielding the end face coil (30).

10. The tire curing mold according to claim 9, wherein, The tire vulcanization mold further comprises a magnetic flux leakage prevention member for preventing magnetic flux leakage, the magnetic flux leakage prevention member comprising: a first magnetic flux leakage prevention member (51) disposed at the outer circumferential side of the first magnetic flux guide (41), and the outer circumferential side surface of the first magnetic flux leakage prevention member (51) being flush with the outer circumferential side surface of the base body (10); a second magnetic flux leakage prevention member (52) disposed at the side of the second magnetic flux guide (42) away from the end face coil (30) and shielding the second magnetic flux guide (42).

11. The tire vulcanization mold according to claim 10, wherein, The base body (10) comprises a middle sleeve (11) having a first groove (111) extending along the circumference of the middle sleeve (11), the first groove (111) comprising a first section and a second section connected in sequence along the axial direction of the middle sleeve (11), the opening size of the second section being larger than that of the first section, and a step structure being formed between the two side edges of the second section and the first section along the axial direction of the middle sleeve (11), the circumferential side coil (20) being disposed in the first section, and the first magnetic flux guide (41) and the first magnetic flux leakage prevention member (51) being disposed in the second section and shielding the opening side of the first section.

12. A vulcanizing machine characterized by, The tire vulcanization mold according to any one of claims 1 to 11. The tire vulcanization mold according to any one of claims 1 to 11.

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