Tire vulcanizing device

Abstract

To provide a tire vulcanizing device that can uniformly transfer heat to a tire product surface and suppress failure of the tire vulcanizing device.SOLUTION: The tire vulcanizing device has a ring-shaped member, wherein at least one plane part is provided on a radial outer circumference of the ring-shaped member, and a planar heater is arranged on the plane part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a tire vulcanizing apparatus. [Background technology]

[0002] 2. Description of the Related Art From the viewpoint of carbon neutrality and the like, a method has been proposed in the past in which a tire vulcanizing apparatus is directly heated via a heat medium by attaching a flexible heater to the apparatus, rather than by steam (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2011-126044 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when using a flexible heater to heat a tire vulcanizing apparatus as in the technology described in Patent Document 1, if the shape of the object to be heated is curved, thermal expansion can cause a gap to form between the heater and the curved surface of the object to which the heater is attached, resulting in localized temperature increases and possibly causing the tire vulcanizing apparatus to malfunction.

[0005] Therefore, an object of the present invention is to provide a tire vulcanizing apparatus that can uniformly transfer heat to the tire product surface and suppress breakdowns in the tire vulcanizing apparatus. [Means for solving the problem]

[0006] The gist and configuration of the present invention are as follows. (1) A tire vulcanizing apparatus having a ring-shaped member, At least one flat surface is provided on a radially outer peripheral surface of the ring-shaped member, A tire vulcanizing apparatus, characterized in that a planar heater is disposed on the flat portion.

[0007] (2) providing eight or more flat surfaces on the radially outer peripheral surface of the ring-shaped member; The tire vulcanizing apparatus according to (1) above, wherein the planar heater is disposed on each of the planar portions.

[0008] (3) The tire vulcanizing apparatus according to (1) or (2), wherein the heater is divided into several stages and arranged in the height direction of the ring-shaped member. Effect of the Invention

[0009] According to the present invention, it is possible to provide a tire vulcanizing apparatus that can uniformly transfer heat to the tire product surface and suppress breakdowns in the tire vulcanizing apparatus. [Brief description of the drawings]

[0010] [Figure 1] 1 is a diagram showing a structure of a tire vulcanizing apparatus according to one embodiment of the present invention. [Diagram 2] FIG. 1 is a schematic plan view of a tire vulcanizing apparatus according to one embodiment of the present invention. [Diagram 3] 1 is a schematic partial cross-sectional view of a tire vulcanizing apparatus according to one embodiment of the present invention. [Figure 4] FIG. 4 is a schematic partial cross-sectional view of a tire vulcanizing apparatus according to another embodiment of the present invention. [Diagram 5] FIG. 2 is a schematic partial cross-sectional view of a tire vulcanizing apparatus according to another embodiment of the present invention. [Figure 6] FIG. 2 is a schematic partial cross-sectional view of a tire vulcanizing apparatus according to still another embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0012] Fig. 1 is a diagram showing the structure of a tire vulcanizing apparatus according to one embodiment of the present invention. Fig. 2 is a schematic plan view of a tire vulcanizing apparatus according to one embodiment of the present invention. Fig. 3 is a schematic partial cross-sectional view of a tire vulcanizing apparatus according to one embodiment of the present invention.

[0013] As shown in FIG. 1, the tire vulcanization apparatus 1 includes a vulcanization container 2, an upper platen 3, and a lower platen 4.

[0014] The vulcanization container 2 includes a tire vulcanization molding mold 5 for storing and vulcanizing a raw tire T, an upper circular plate 6 for holding the tire vulcanization molding mold 5, and a ring-shaped member (outer ring) 8 for opening and closing the tire vulcanization molding mold 5.

[0015] The tire vulcanization mold 5 includes a tread molding mold 51 for molding the tread portion of the tire, a sidewall molding mold 52 for molding the sidewall portion of the tire, and a plurality of segments 53 arranged on the outer periphery of the tread molding mold 51 and divided in the circumferential direction. Note that Figs. 1 to 3 show the tire vulcanization molding mold 5 in a closed state, i.e., a state in which the divided segments 53 are assembled.

[0016] Here, in the tire vulcanizer 1 of this embodiment, at least one flat surface is provided on the radial outer peripheral surface 8a of the outer ring 8. As a result, in this example, eight flat surfaces are provided on the radial outer peripheral surface 8a of the outer ring 8. Here, the "radial direction" refers to the radial direction when viewed as the axial direction of the vulcanizer with the direction that is the tire width direction being the height direction of the tire vulcanizer, as shown in Fig. 1 .

[0017] A planar heater 9 is disposed on the planar portion. In the illustrated example, one or more heaters 9 are disposed on each planar portion. The heater 9 may be any heater that is attached planarly to the planar portion, and a planar flexible heater 9 may be attached planarly, or a planar non-flexible heater 9 may be used. In this example, a pressing plate 10 is further disposed on the outer periphery of each heater 9 for pressing the heater 9 against the planar portion. The effects of the tire vulcanizing apparatus 1 of this embodiment will be described below.

[0018] In the tire vulcanizing apparatus 1 of the present embodiment, as described above, at least one flat portion is provided on the radial outer circumferential surface 8a of the outer ring 8, and the planar heater 9 is disposed on the flat portion. As a result, the heater 9 and the radial outer peripheral surface 8a of the outer ring 8 are attached in a flat plane, so that heat can be efficiently transferred, and even if thermal expansion occurs, the direction of the force can be easily kept within the plane, and the occurrence of a gap between the heater 9 and the radial outer peripheral surface 8a of the outer ring 8 is suppressed. Therefore, local temperature rises caused by the occurrence of gaps can be suppressed, and breakdowns of the tire vulcanizing apparatus can be suppressed. In this way, according to the tire vulcanizing apparatus 1 of the present embodiment, heat can be uniformly transferred to the tire product surface, and breakdowns in the tire vulcanizing apparatus can be suppressed.

[0019] Here, it is preferable that n or more (n is an integer of 3 or more) flat portions are provided on the radial outer surface 8a of the outer ring 8, and a planar heater 9 is arranged on each flat portion, and it is particularly preferable that eight or more flat portions are provided on the radial outer surface 8a of the outer ring 8, and a planar heater 9 is arranged on each flat portion. This is because it is possible to make the heat transfer more uniform around the circumference in the tire vulcanizing apparatus 1. Also, it is possible to avoid interference with the opening and closing mechanism and the like as much as possible.

[0020] Fig. 4 is a schematic partial cross-sectional view of a tire vulcanizing apparatus according to another embodiment of the present invention. As shown in Fig. 4, it is also preferable to divide the heater 9 into several stages (two stages in the illustrated example) in the height direction of the outer ring 8 and arrange them. For example, when it is preferable to change the way heat is applied in the tire width direction in terms of tire molding, this can be achieved by varying the output or area of ​​the divided heater 9.

[0021] 2, it is preferable to further dispose a pressing plate 10 on the outer periphery of each heater 9 for pressing the heater 9 against the flat surface, since this allows for more uniform transfer of heat.

[0022] Fig. 5 is a schematic partial cross-sectional view of a tire vulcanizing apparatus according to another embodiment of the present invention. As shown in Fig. 5, a configuration without segments is also possible, in which case a ring-shaped member (jacket 11) is disposed on the radially outer side of a tread molding die 51. At least one flat portion is provided on the radially outer peripheral surface 11a of the jacket 11, and a planar heater 9 is disposed on the flat portion. This other embodiment also makes it possible to uniformly transfer heat to the tire product surface and suppress breakdowns in the tire vulcanizing apparatus.

[0023] Fig. 6 is a schematic partial cross-sectional view of a tire vulcanizing apparatus according to yet another embodiment of the present invention. In the example of Fig. 6, a tread molding mold 51, a jacket 11, and a heater 9 are divided and arranged in several stages (two stages in the illustrated example) in the height direction of the tire vulcanizing apparatus 1. For example, when it is preferable to change the way heat is applied in the tire width direction in terms of tire molding, this can be achieved by varying the output or area of ​​the divided heater 9.

[0024] [Contribution to the United Nations-led Sustainable Development Goals (SDGs)] The SDGs have been proposed to realize a sustainable society. One embodiment of the present invention is considered to be a technology that can contribute to "No. 12_Responsible Consumption and Production" and "No. 13_Concrete measures against climate change." [Explanation of symbols]

[0025] 1: Tire vulcanizing equipment, 2: Vulcanization container, 3: Upper platen, 4: Lower platen, 5: Tire vulcanization molding mold, 51: Tread molding mold, 52: Sidewall molding die, 53: Segment, 6: Upper disc, 8: Ring-shaped member (outer ring), 8a: radial outer circumferential surface, 9: Heater, 10: Pressing plate, 11: Ring-shaped member (jacket), 11a: Radial outer circumferential surface

Claims

1. A tire vulcanizing apparatus having a ring-shaped member, At least one flat surface is provided on a radially outer peripheral surface of the ring-shaped member, A tire vulcanizing apparatus, characterized in that a planar heater is disposed on the flat portion.

2. The ring-shaped member has eight or more flat surfaces on a radially outer peripheral surface thereof, The tire vulcanizing apparatus according to claim 1 , wherein the planar heater is disposed on each of the flat portions.

3. 3. The tire vulcanizing apparatus according to claim 1, wherein the heater is divided into several stages and disposed in a height direction of the ring-shaped member.

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