Tire mold heating device

Abstract

The utility model provides a tire mold heating device, which belongs to the technical field of tire mold heating and comprises a hot plate, one side of the hot plate is connected with a tire mold, the other side of the hot plate is provided with a cavity, the hot plate is provided with a plurality of positioning components distributed along the circumferential direction of the hot plate, and the positioning components divide the cavity into a plurality of sub-cavities distributed along the circumferential direction of the hot plate; each positioning assembly comprises a plurality of positioning pieces arranged in the radial direction of the hot plate. The tire mold is fixed through the positioning piece; the electromagnetic coil is arranged in the sub-cavity, and the distance between the electromagnetic coil and the binding face of the tire mold and the hot plate is 19-21 mm; and the temperature measuring thermal resistor and the contact are arranged on the binding surface of the tire mold and the hot plate. The tire mold heating device solves the problems of low energy utilization rate, long mold heating time and poor universality of the existing tire mold heating mode, and has the characteristics of high energy utilization rate and suitability for heating tire molds with different specifications.

Description

Technical Field

[0001] This utility model belongs to the field of tire mold heating technology, and in particular relates to a tire mold heating device. Background Technology

[0002] Existing tire vulcanizing machines use heating plates at the top and bottom of a movable mold during tire vulcanization. Conventional heating plates have internal channels for saturated steam, and the temperature of the heating plates is controlled by regulating the steam flow rate. Heat is then transferred to the mold via heat conduction. However, due to the poor fluidity of saturated steam, this method suffers from large temperature differences between the upper and lower heating plates and high energy consumption. With societal development, various heating plate methods have emerged, such as electric heating elements, electric heating tubes, and electromagnetic induction heating, but all suffer from low energy efficiency, long heating times, and poor versatility. Utility Model Content

[0003] Details of one or more embodiments of the present invention are set forth in the following drawings and description to make other features, objects and advantages of the present application more readily apparent.

[0004] This utility model proposes a tire mold heating device, which solves the problems of low energy utilization, long heating time and poor versatility of existing tire mold heating methods. It has the characteristics of high energy utilization and can be applied to heating tire molds of different specifications.

[0005] This utility model discloses a tire mold heating device, comprising: a hot plate, one side of which is connected to the tire mold, and the other side having a cavity, having a plurality of positioning components distributed circumferentially along the hot plate, the plurality of positioning components dividing the cavity into a plurality of sub-cavities distributed circumferentially along the hot plate; each positioning component includes a plurality of positioning elements arranged radially along the hot plate; the tire mold is fixed by the positioning elements; an electromagnetic coil is disposed in the sub-cavities, the distance between the electromagnetic coil and the contact surface between the tire mold and the hot plate is 19-21mm; and a temperature measuring resistance thermometer, the contacts of which are disposed on the contact surface between the tire mold and the hot plate.

[0006] In some embodiments, the tire mold heating device further includes a crossbeam for fixing the tire mold cover, and a heating plate including an upper heating plate disposed between the crossbeam and the tire mold cover; a positioning component disposed on the upper heating plate including a plurality of first mounting holes radially distributed along the upper heating plate; the crossbeam is provided with screw holes corresponding to each of the first mounting holes; the tire mold cover is fixedly connected to the crossbeam by bolts, the first mounting holes and the screw holes.

[0007] In some embodiments, the hot plate includes a lower hot plate connected to the tire mold base plate; the positioning assembly disposed on the lower hot plate includes a first positioning assembly connecting the lower hot plate and the tire mold base plate; the first positioning assembly includes a T-slot disposed radially along the lower hot plate and a T-block cooperating with the T-slot.

[0008] In some embodiments, the temperature-measuring resistance thermometer includes a first temperature-measuring resistance thermometer that passes through a first mounting hole and contacts the mating surface of the tire mold cover and the upper heating plate.

[0009] In some embodiments, the tire mold heating device further includes a base for fixing the lower heating plate; the positioning assembly disposed on the lower heating plate further includes a second positioning assembly connecting the lower heating plate and the base; the second positioning assembly includes a plurality of second mounting holes radially distributed along the lower heating plate.

[0010] In some embodiments, the temperature-measuring resistance thermometer includes a second temperature-measuring resistance thermometer that passes through the second mounting hole and contacts the mating surfaces of the tire mold base plate and the lower heating plate.

[0011] In some embodiments, the tire mold heating device also includes a controller electrically connected to an electromagnetic coil and a temperature-sensing resistance thermometer.

[0012] In some embodiments, the tire mold heating device further includes an insulating layer disposed between the hot plate and the electromagnetic coil and located within the cavity.

[0013] In some embodiments, the tire mold heating device is provided with an insulating heat insulation plate, a fixing plate, an electromagnetic shielding layer, an electromagnetic coil, and an insulating layer in sequence from the crossbeam to the hot plate.

[0014] In some embodiments, the tire mold heating device is provided with an insulating heat insulation plate, a fixing plate, an electromagnetic shielding layer, an electromagnetic coil, and an insulating layer in sequence from the base to the hot plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This utility model provides a tire mold heating device. By setting a positioning component and further defining the distribution of the positioning component and the positioning parts on the hot plate, tire molds of different specifications can be heated by this device. Simultaneously, by setting an electromagnetic coil and limiting the distance between the electromagnetic coil and the contact surface between the tire mold and the hot plate, it ensures that the tire mold can be directly heated by the electromagnetic coil, and also indirectly heated by the hot plate, greatly improving energy utilization and solving the problem of long heating time. Furthermore, by setting a temperature-measuring resistance thermometer and limiting the contact points of the resistance thermometer to the contact surface between the tire mold and the hot plate, it ensures that the resistance thermometer can accurately measure the temperature of the tire mold, improving the accuracy of temperature control and ensuring the heating effect of the tire mold. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the tire mold heating device provided in an embodiment of the present utility model;

[0019] Figure 2 This is another structural schematic diagram of the tire mold heating device provided in an embodiment of the present utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the upper heating plate provided in an embodiment of the present utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the lower heating plate provided in an embodiment of the present utility model;

[0022] Figure 5 This is another structural schematic diagram of the lower heating plate provided in an embodiment of the present utility model;

[0023] Figure 6 This is a schematic diagram of the electromagnetic coil layout provided in an embodiment of the present utility model;

[0024] In the above figures: 1. Insulating heat insulation board; 2. Fixing plate; 3. Electromagnetic shielding layer; 4. Electromagnetic coil; 5. Insulating layer; 6. Upper heating plate; 7. Lower heating plate; 8. Temperature measuring resistance thermometer; 9. Tire movable mold upper cover; 10. Tire movable mold mounting ring; 11. Tire movable mold base plate; 12. Crossbeam; 13. Base; 14. First mounting hole; 15. T-slot; 16. T-block; 17. Second mounting hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be described and explained below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model. All other embodiments obtained by those skilled in the art based on the embodiments provided by this utility model without inventive effort are within the scope of protection of this utility model.

[0026] This utility model provides a tire mold heating device. Figure 1 This is a schematic diagram of the tire mold heating device according to an embodiment of the present invention.

[0027] refer to Figure 1As shown, the tire mold heating device includes a hot plate, one side of which is connected to the tire mold, and the other side has a cavity with several positioning components distributed circumferentially along the hot plate. These positioning components divide the cavity into several sub-cavities distributed circumferentially along the hot plate. Each positioning component includes several positioning elements arranged radially along the hot plate. The tire mold is fixed by the positioning elements. By setting the positioning components and further defining the distribution of the positioning components and positioning elements on the hot plate, tire molds of different specifications can be heated by this tire mold heating device.

[0028] Regarding the method of fixing the tire mold:

[0029] like Figure 2 As shown, the tire mold heating device also includes a crossbeam 12 for fixing the upper cover of the tire mold, and a heating plate including an upper heating plate 6 disposed between the crossbeam 12 and the upper cover of the tire mold; as Figure 3 As shown, the positioning assembly on the upper heating plate 6 includes a plurality of first mounting holes 14 radially distributed along the upper heating plate 6; the crossbeam 12 is provided with screw holes corresponding to each of the first mounting holes 14; the tire mold cover is fixedly connected to the crossbeam 12 by bolts, the first mounting holes 14, and the screw holes. For tire mold covers of different specifications, different first mounting holes 14 and screw holes can be used, and bolts or other methods can be used to fix the tire mold cover to the crossbeam 12, improving the versatility of the tire mold heating device.

[0030] like Figure 4 , 5 As shown, the heating plate includes a lower heating plate 7 connected to the tire mold base plate; the positioning assembly provided on the lower heating plate 7 includes a first positioning assembly connecting the lower heating plate 7 and the tire mold base plate; the first positioning assembly includes a T-slot 15 arranged radially along the lower heating plate 7, and a T-block 16 that mates with the T-slot 15. Similarly, for tire mold base plates of different specifications, the base plate of the tire mold and the crossbeam 12 can be fixedly connected by fixing the T-block 16 in the T-slot 15, which improves the versatility of the tire mold heating device.

[0031] The aforementioned upper heating plate 6, the tire movable mold cover 9, and the tire movable mold mounting ring 10 are all made of high-quality magnetically conductive carbon steel. These three components are bonded together and heated by induction heating via an electromagnetic coil 4. The electromagnetic coil 4 is externally connected to an electromagnetic controller and a control unit that compares and analyzes temperature data fed back by a temperature-sensing resistance thermometer 8. The contacts of the temperature-sensing resistance thermometer 8 are placed on the bonding surface, approximately 20mm from the electromagnetic coil, which is the area where electromagnetic induction heating heats up the fastest.

[0032] Similarly, both the lower heating plate 7 and the tire-operated mold base plate 11 are made of high-quality, magnetically conductive carbon steel. They are bonded together and heated by induction heating via an electromagnetic coil 4. The electromagnetic coil 4 is connected to an external electromagnetic controller and a control unit that compares and analyzes temperature data fed back by a temperature-sensing resistance thermometer 8. The contacts of the temperature-sensing resistance thermometer 8 are placed on the bonding surface, approximately 20mm from the electromagnetic coil, which is the area where electromagnetic induction heating heats up the fastest.

[0033] like Figure 6 As shown, the aforementioned tire mold heating device also includes an electromagnetic coil 4, which is located within the sub-cavity. The distance between the electromagnetic coil 4 and the contact surface between the tire mold and the hot plate is 19-21 mm. By setting the electromagnetic coil 4 and limiting the distance between it and the contact surface, the device ensures that the tire mold can be directly heated using the electromagnetic coil 4, and also indirectly heated using the hot plate, greatly improving energy utilization and solving the problem of long heating time. The contact surface, approximately 20 mm from the electromagnetic coil 4, is the area where electromagnetic induction heating heats up the fastest. The placement of the electromagnetic coil 4 within the sub-cavity allows for a zoned layout, and combined with the overall structure, ensures that the maximum temperature difference between the hot plate and the mold surface during heating is ≤ ±2℃.

[0034] Furthermore, the above-mentioned tire mold heating device also includes a temperature measuring resistance thermometer 8, with contacts set on the contact surface between the tire mold and the hot plate, ensuring that the temperature measuring resistance thermometer 8 can accurately measure the temperature of the tire mold, improving the accuracy of temperature control, and helping to ensure the heating effect of the tire mold.

[0035] In some embodiments, the temperature-measuring resistance temperature detector (RTD) 8 includes a first temperature-measuring RTD 8 that passes through the first mounting hole 14 and contacts the mating surface of the tire mold cover and the upper heating plate 6. The first mounting hole 14 enables the RTD 8 to directly detect the upper heating plate 6, ensuring detection accuracy while avoiding changes to the original structure due to the installation of the RTD 8, thus simplifying the installation process.

[0036] Continue as Figure 2 As shown, the tire mold heating device also includes a base 13 for fixing the lower heating plate 7; the positioning assembly on the lower heating plate 7 further includes a second positioning assembly connecting the lower heating plate 7 and the base 13; the second positioning assembly includes a plurality of second mounting holes 17 radially distributed along the lower heating plate 7. In some embodiments, the temperature measuring resistor 8 includes a second temperature measuring resistor 8 that passes through the second mounting holes 17 and contacts the mating surface of the tire mold base plate and the lower heating plate 7. The second mounting holes 17 enable the temperature measuring resistor 8 to directly detect the upper heating plate 6, which ensures the accuracy of the detection and avoids changes to the original structure due to the installation of the temperature measuring resistor 8, thus simplifying the installation process.

[0037] In some embodiments, the tire mold heating device further includes a controller electrically connected to the electromagnetic coil 4 and the temperature-measuring resistor 8. The electromagnetic controller uses the temperature information fed back by the temperature-measuring resistor 8 to perform PID calculations and control the current changes, thereby achieving dynamic temperature control.

[0038] In some embodiments, the tire mold heating device further includes an insulating layer 5 disposed between the hot plate and the electromagnetic coil 4 and located within the cavity. The tire mold heating device, from the crossbeam 12 upwards to the hot plate 6, is sequentially provided with an insulating heat-insulating plate 1, a fixing plate 2, an electromagnetic shielding layer 3, an electromagnetic coil 4, and an insulating layer 5; the tire mold heating device, from the base 13 downwards to the hot plate 7, is sequentially provided with an insulating heat-insulating plate 1, a fixing plate 2, an electromagnetic shielding layer 3, an electromagnetic coil 4, and an insulating layer 5.

[0039] Regarding the aforementioned tire mold heating device, further, the upper heating plate 6 has a cavity on its upper part, and an insulating layer 5 is provided on the cavity. The electromagnetic coil 4 is arranged above the insulating layer 5 and is bonded and fixed with high-temperature resistant adhesive. An electromagnetic shielding layer 3 is provided above the electromagnetic coil 4, and a fixing plate 2 is provided above it, and the above-mentioned components are fixed with bolts. An insulating heat insulation plate 1 is provided above the fixing plate 2 to reduce heat loss from the heating plate.

[0040] Similarly, the lower heating plate 7 has a cavity at its lower part, on which an insulating layer 5 is provided. The electromagnetic coil 4 is arranged below the insulating layer 5 and is bonded and fixed with high-temperature resistant adhesive. An electromagnetic shielding layer 3 is provided below the electromagnetic coil 4, and a fixing plate 2 is provided below it, and the above-mentioned components are fixed with bolts. An insulating heat insulation plate 1 is provided below the fixing plate 2 to reduce heat loss of the heating plate.

[0041] The working process of the above-mentioned tire mold heating device is as follows:

[0042] The tire mold is positioned using a positioning component, and the tire mold is directly heated under the action of the electromagnetic coil 4. At the same time, the electromagnetic coil 4 also heats the hot plate, and the heated hot plate also heats the tire mold, which improves the heat utilization rate. The temperature of the tire mold is constantly monitored by the temperature measuring resistance 8 to ensure the heating effect of the tire mold.

[0043] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0044] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tire mold heating device, characterized in that, include: A hot plate, connected to a tire mold on one side and having a cavity on the other side, has several positioning components distributed circumferentially along the hot plate, which divide the cavity into several sub-cavities distributed circumferentially along the hot plate; each positioning component includes several positioning elements arranged radially along the hot plate; the tire mold is fixed by the positioning elements. An electromagnetic coil is disposed within the sub-cavity, and the distance between the electromagnetic coil and the contact surface between the tire mold and the hot plate is 19-21 mm. The temperature measuring resistance thermometer has its contacts located on the mating surface between the tire mold and the hot plate.

2. The tire mold heating device according to claim 1, characterized in that, The tire mold heating device further includes a crossbeam for fixing the upper cover of the tire mold, and the heating plate includes an upper heating plate disposed between the crossbeam and the upper cover of the tire mold. The positioning assembly on the upper heating plate includes a plurality of first mounting holes radially distributed along the upper heating plate; the crossbeam is provided with screw holes corresponding to each of the first mounting holes; the tire mold cover is fixedly connected to the crossbeam by bolts, the first mounting holes and screw holes.

3. The tire mold heating device according to claim 1, characterized in that, The hot plate includes a lower hot plate connected to the tire mold base plate; the positioning component disposed on the lower hot plate includes a first positioning component connecting the lower hot plate and the tire mold base plate; the first positioning component includes a T-slot arranged radially along the lower hot plate and a T-block cooperating with the T-slot.

4. The tire mold heating device according to claim 2, characterized in that, The temperature measuring resistor includes a first temperature measuring resistor that passes through the first mounting hole and contacts the mating surface of the tire mold cover and the upper heating plate.

5. The tire mold heating device according to claim 3, characterized in that, The tire mold heating device also includes a base for fixing the lower heating plate; The positioning assembly disposed on the lower heating plate further includes a second positioning assembly connecting the lower heating plate and the base; the second positioning assembly includes a plurality of second mounting holes radially distributed along the lower heating plate.

6. The tire mold heating device according to claim 5, characterized in that, The temperature measuring resistor includes a second temperature measuring resistor that passes through the second mounting hole and contacts the mating surface of the tire mold base plate and the lower heating plate.

7. The tire mold heating device according to claim 1, characterized in that, The tire mold heating device also includes a controller electrically connected to the electromagnetic coil and the temperature measuring resistance thermometer.

8. The tire mold heating device according to claim 1, characterized in that, The tire mold heating device also includes an insulating layer disposed between the hot plate and the electromagnetic coil and located within the cavity.

9. The tire mold heating device according to claim 2, characterized in that, The tire mold heating device is provided with an insulating heat insulation plate, a fixing plate, an electromagnetic shielding layer, an electromagnetic coil, and an insulating layer in sequence from the crossbeam to the upper heating plate.

10. The tire mold heating device according to claim 3, characterized in that, The tire mold heating device is provided with an insulating heat insulation plate, a fixing plate, an electromagnetic shielding layer, an electromagnetic coil, and an insulating layer in sequence from the base to the lower heating plate.

Images