Tire vulcanization equipment

Abstract

The utility model discloses tire vulcanizing equipment, which belongs to the technical field of tire production devices, and comprises a vulcanizing mold, a vulcanizing cavity, a vulcanizing device and a vulcanizing device, the gas heating mechanism comprises three electric heating modules, and the three electric heating modules are all located in the vulcanization cavity; each electric heating module comprises a plurality of electric heating elements; the impedances of the three electric heating modules are equal; the electric heating elements of the three electric heating modules are respectively coupled with a symmetrical three-phase power supply to form a symmetrical three-phase circuit; the vulcanization cavity for accommodating the vulcanization capsule is formed in the vulcanization mold, the gas heating mechanism is positioned in the vulcanization capsule and is designed into three electric heating modules with equal impedance, the three electric heating modules are coupled with the symmetrical three-phase power supply to form a symmetrical three-phase circuit, and the electric heating elements are reasonably arranged, so that the production efficiency is improved. Any two-phase load balance can be ensured, and impact on a power grid of a tire vulcanization workshop is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tire production devices, in particular to tire vulcanization equipment. Background Art

[0002] At present, the internal temperature of tire vulcanization is usually provided by combining saturated steam and nitrogen; specifically, saturated steam is first introduced into the vulcanization capsule to provide the heat required for vulcanization, and the amount of heat is adjusted by controlling the time of steam introduction; and high-pressure nitrogen is then introduced into the vulcanization capsule to provide the pressure required for vulcanization. Since steam will condense when it encounters cold, the condensed water will accumulate under the vulcanization capsule, causing a large temperature difference between the upper and lower vulcanization capsules, resulting in poor dynamic balance and uniformity of the tire; in addition, high-temperature steam consumes a lot of energy during preparation, and a large amount of heat will be lost when it is transported along complex and lengthy thermal pipelines. The recycling rate of the water-steam mixture after vulcanization is low, and a large amount of heat is lost in vain, resulting in a huge waste of energy.

[0003] Some tire manufacturers have begun to use electric heating instead of steam heating. Specifically, the electric heating module (usually composed of several heating tubes) is installed inside the curing bladder. Several heating tubes are connected to two phases of the three-phase power supply respectively, and AC is used to achieve resistance heating. If the heating tubes are not arranged properly, load imbalance is likely to occur. When multiple tire vulcanizers are running at the same time, the load imbalance will have a great impact on the power grid of the tire vulcanization workshop.

[0004] Therefore, designing a tire vulcanization equipment with reasonable heating tube arrangement and balanced load on any two phases is a problem that needs to be solved urgently at this stage. Summary of the invention

[0005] In order to solve the problems existing in the prior art, the utility model provides a tire vulcanization equipment, in which the gas heating mechanism located in the vulcanization chamber is designed as three electric heating modules with equal impedance. The three electric heating modules are coupled with a symmetrical three-phase power supply to form a symmetrical three-phase circuit. The electric heating elements are arranged reasonably to ensure the load balance of any two phases and avoid impact on the power grid of the tire vulcanization workshop.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The utility model provides a tire vulcanization equipment, comprising:

[0008] A vulcanization mold, wherein a vulcanization cavity is formed inside the vulcanization mold;

[0009] A gas heating mechanism, wherein the gas heating mechanism comprises three electric heating modules, and the three electric heating modules are all located in the vulcanization chamber; each of the electric heating modules comprises a plurality of electric heating elements; and the impedances of the three electric heating modules are all equal;

[0010] The electric heating elements of the three electric heating modules are respectively coupled to a symmetrical three-phase power supply to form a symmetrical three-phase circuit.

[0011] As a preferred technical solution, the vulcanization mold includes an upper mold and a lower mold, and the upper mold and the lower mold can be opened and closed; when the upper mold and the lower mold are closed, the vulcanization cavity is formed inside the vulcanization mold.

[0012] As a preferred technical solution, the vulcanization bladder can be placed in the vulcanization cavity; when the vulcanization bladder is placed in the vulcanization cavity, the three electric heating modules are all located inside the vulcanization bladder.

[0013] As a preferred technical solution, it also includes a ring seat, which is located below the vulcanization mold and is connected to a driving component that drives the ring seat to move in a direction close to or away from the vulcanization mold.

[0014] As a preferred technical solution, the ring seat is provided with a medium inlet and outlet; the medium inlet and outlet are connected to the vulcanization cavity.

[0015] As a preferred technical solution, a center rod is arranged at the center of the ring seat, and the three electric heating modules are all fixed on the ring seat and arranged around the center rod.

[0016] As a preferred technical solution, the gas heating mechanism further includes a flow guide port, which is fixed on the ring seat and arranged in a direction from the electric heating module to the inner wall of the vulcanizing bladder;

[0017] And / or, the three electric heating modules are evenly distributed along the axial direction of the central rod.

[0018] As a preferred technical solution, the electric heating element is configured as a heating tube.

[0019] As a preferred technical solution, the shape of the electric heating element is set to be disc-shaped, S-shaped or straight-line.

[0020] As a preferred technical solution, the length, cross-sectional area and resistivity of the electric heating elements are the same.

[0021] The beneficial effects of the utility model are as follows:

[0022] 1. A vulcanization cavity for accommodating a vulcanization capsule is formed inside the vulcanization mold of the utility model. The gas heating mechanism is located inside the vulcanization capsule and is designed as three electric heating modules with equal impedance. The three electric heating modules are coupled with a symmetrical three-phase power supply to form a symmetrical three-phase circuit. The electric heating elements are reasonably arranged to ensure load balance between any two phases, effectively avoiding impact on the power grid of the tire vulcanization workshop.

[0023] 2. The gas heating mechanism of the utility model is located inside the vulcanization bladder during vulcanization. The gas heating mechanism can maintain the internal temperature of the vulcanization bladder by heating it with electricity. Steam and its thermal pipelines are no longer required, which improves the vulcanization quality, reduces production costs, and has high energy utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a tire vulcanization equipment of the utility model;

[0025] Figure 2 for Figure 1 A magnified image of area A;

[0026] Figure 3 for Figure 1 A schematic diagram of an electrical connection between an electric heating module and a symmetrical three-phase power supply;

[0027] Figure 4 for Figure 1 Another electrical connection diagram between the electric heating module and the symmetrical three-phase power supply.

[0028] In the figure: 1-vulcanization mold, 11-vulcanization cavity, 12-upper mold, 13-lower mold, 2-electric heating module, 3-symmetrical three-phase power supply, 4-vulcanization capsule, 5-ring seat, 51-center rod, 52-upper clamping ring, 53-fan, 54-transmission component, 55-lower clamping ring, 6-flow guide port. DETAILED DESCRIPTION

[0029] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings. Embodiment 1

[0030] Please refer to Figure 1-Figure 3, is an embodiment of a tire vulcanization equipment provided by the utility model, comprising: a vulcanization mold 1, the vulcanization mold 1 comprises an upper mold 12 and a lower mold 13, the upper mold 12 and the lower mold 13 realize the opening and closing of the vulcanization mold 1 by opening and closing, when the upper mold 12 and the lower mold 13 are closed, a vulcanization cavity 11 is formed inside the vulcanization mold 1; during vulcanization, a vulcanization capsule 4 is placed in the vulcanization cavity 11, and a gas heating mechanism formed by three electric heating modules 2 is located inside the vulcanization capsule 4, and the electric heating module 2 can heat the medium after being energized, and the heated medium automatically or passively diffuses to fill the inner cavity of the vulcanization capsule 4, and heats the entire vulcanization capsule 4; specifically, the electric heating module 2 is composed of a plurality of electric heating elements, the impedances of the three electric heating modules 2 are equal, and the electric heating elements of each electric heating module 2 are connected in series in sequence; the three electric heating modules 2 are connected end to end in sequence, and the end to end connection of the three electric heating modules 2 is respectively coupled with the three phase lines of the symmetrical three-phase power supply 3 to form a symmetrical three-phase circuit; the load balance of any two phases during the tire vulcanization process can be effectively ensured.

[0031] It should be noted that the medium is preferably set to nitrogen; the electric heating element is preferably set to a heating tube; the medium is heated by the electric heating module 2 and circulated by free diffusion. The impeller or fan 53 can also be set at the electric heating module 2 to make the medium passively flow and diffuse in a certain direction, so as to achieve a better circulation effect.

[0032] In this embodiment, please refer to Figure 1 The utility model also includes a ring seat 5, which is located below the vulcanization mold 1, and a hole for the ring seat 5 to extend into is provided at a position of the lower mold 13 corresponding to the ring seat 5; during vulcanization, the ring seat 5 moves toward the vulcanization mold 1 under the action of a driving assembly (not shown in the figure) until the ring seat 5 is stuck in the hole on the lower mold 13, and part of the ring seat 5 extends into the vulcanization cavity 11 to seal the vulcanization cavity 11; specifically, the ring seat 5 is preferably moved under the drive of the vulcanizer. In other embodiments, the driving assembly can also be set to a separately arranged servo motor, and the servo motor can also drive the ring seat 5 to move linearly through a screw structure.

[0033] Based on the above examples, please refer to Figure 1 and Figure 2 The ring seat 5 has a medium inlet and outlet; during vulcanization, the medium is filled into the vulcanization cavity 11 through the medium inlet and outlet to provide pressure for tire molding of the vulcanization bladder 4; at the same time, after the medium is heated by the electric heating module 2 in the vulcanization cavity 11, it automatically or passively diffuses to fill the inner cavity of the vulcanization bladder 4 and heats the entire vulcanization bladder 4.

[0034] For further information, please refer to Figure 1 and Figure 2The center rod 51 is arranged at the center of the ring seat 5 and passes through the center of the ring seat 5. The center rod 51 can move relative to the ring seat 5 under the control of the vulcanizer; the center rod 51 is fixedly connected to the upper clamping ring 52, and the center rod 51 drives the upper clamping ring 52 to move so that the upper opening of the vulcanizing bladder 4 can be sealed; the ring seat 5 is fixedly connected to the lower clamping ring 55, and the ring seat 5 drives the lower clamping ring 55 to move so that the lower opening of the vulcanizing bladder 4 can be sealed; a rotatable fan 53 is arranged on the ring seat 5, and the fan 53 rotates under the drive of the transmission component 54, which can drive the vulcanizing cavity 11 The medium inside quickly diffuses; the three electric heating modules 2 are all fixed on the ring seat 5 and arranged around the central rod 51; specifically, the three electric heating modules 2 are preferably evenly distributed along the axial direction of the central rod 51 and are located at the center position in the vulcanization capsule 4, so that the vulcanization capsule 4 is heated more evenly; further, in order to ensure the uniformity of heating, the shape of the electric heating element is preferably set to be disc-shaped. In other embodiments, in order to facilitate processing and installation, on the premise of ensuring that the vulcanization capsule 4 can be evenly heated, the shape of the electric heating element can also be S-shaped or straight.

[0035] In this embodiment, please refer to Figure 1 and Figure 2 A guide port 6 is provided on the ring seat 5, and the guide direction of the guide port 6 is set to be from the electric heating module 2 to the inner wall of the vulcanization capsule 4. The heated medium can be quickly diffused to the inner wall of the vulcanization capsule 4 under the guidance of the guide port 6, thereby improving the heating effect.

[0036] It should be noted that the length, cross-sectional area and resistivity of the electric heating elements are preferably set to be the same, and the number of electric heating elements in each electric heating module 2 is the same, which can ensure that the impedance of each electric heating module 2 is equal and the heating power of each electric heating module 2 is equal. It can easily achieve load balancing of any two phases and is also convenient for production and processing. Embodiment 2

[0037] Please refer to Figure 4 The main difference between this embodiment and the first embodiment is that one end of the three electric heating modules 2 is connected together, and the other ends of the three electric heating modules 2 are respectively coupled with the three phase lines of the symmetrical three-phase power supply 3 to form a symmetrical three-phase circuit; this method can also ensure the load balance of any two phases during the tire vulcanization process.

[0038] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tire vulcanization equipment, characterized in that: include: A vulcanization mold, wherein a vulcanization cavity is formed inside the vulcanization mold; A gas heating mechanism, wherein the gas heating mechanism comprises three electric heating modules, and the three electric heating modules are all located in the vulcanization chamber; each of the electric heating modules comprises a plurality of electric heating elements; and the impedances of the three electric heating modules are all equal; The electric heating elements of the three electric heating modules are respectively coupled to a symmetrical three-phase power supply to form a symmetrical three-phase circuit.

2. A tire vulcanization equipment according to claim 1, characterized in that: The vulcanization mold comprises an upper mold and a lower mold, and the upper mold and the lower mold can be opened and closed; when the upper mold and the lower mold are closed, the vulcanization cavity is formed inside the vulcanization mold.

3. A tire vulcanization equipment according to claim 1, characterized in that: The vulcanization bladder can be placed in the vulcanization cavity; when the vulcanization bladder is placed in the vulcanization cavity, the three electric heating modules are all located inside the vulcanization bladder.

4. A tire vulcanization equipment according to claim 1, characterized in that: It also includes a ring seat, which is located below the vulcanization mold and is connected to a driving component that drives the ring seat to move in a direction close to or away from the vulcanization mold.

5. A tire vulcanizing equipment according to claim 4, characterized in that: The ring seat is provided with a medium inlet and outlet; the medium inlet and outlet are communicated with the vulcanization cavity.

6. A tire vulcanizing equipment according to claim 4 or 5, characterized in that: A central rod is arranged at the center of the ring seat, and the three electric heating modules are all fixed on the ring seat and arranged around the central rod.

7. A tire vulcanizing equipment according to claim 6, characterized in that: The gas heating mechanism further comprises a flow guide port, which is fixed on the ring seat and arranged along a direction from the electric heating module to the inner wall of the vulcanizing bladder; And / or, the three electric heating modules are evenly distributed along the axial direction of the central rod.

8. A tire vulcanizing equipment according to claim 1, characterized in that: The electric heating element is configured as a heating tube.

9. A tire vulcanizing equipment according to claim 1 or 8, characterized in that: The shape of the electric heating element is set to be disc-shaped, S-shaped or straight-line.

10. A tire vulcanization equipment according to claim 1 or 8, characterized in that: The length, cross-sectional area and resistivity of the electric heating elements are the same.

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