JP2019188709A - Attachment method of tire vulcanization bladder assembly - Google Patents

Abstract

To provide an attachment method of a tire vulcanization bladder assembly capable of efficiently attaching a tire vulcanization bladder assembly to a center mechanism of a tire vulcanizer by positioning conveniently and with high accuracy.SOLUTION: By engaging engagement parts 6 of opposite surfaces of a lower side ring part 4 and an upper side ring part 5 to place the upper side ring part 5 on the lower side ring part 4, a relative movement in at least a non-peripheral direction of the lower side ring part 4 and the upper side ring part 5 in a plan view is restricted, and, with the lower side ring part 4 and the upper side ring part 5 aligned, a bladder assembly 1 is placed on a positioning table 11, by arranging the positioning table 11 to a positioning part 18 of the tire vulcanizer 8, at a position where the lower side ring part 4 is aligned with a center mechanism 9, and, after arranging on an upper position of the attachment part 10a of the center mechanism 9, the lower side ring part 4 is fixed to a center attachment part 10a, with a center post 10 moved upward inserted in the upper side ring part 5, the center post 10 is fixed to the upper side ring part 5.SELECTED DRAWING: Figure 9

Description

  The present invention relates to a mounting method for a tire vulcanizing bladder assembly, and more specifically, the tire vulcanizing bladder assembly is more easily and accurately positioned and efficiently attached to a central mechanism of a tire vulcanizer. The present invention relates to a method for mounting a bladder assembly for tire vulcanization.

  The tire vulcanizer includes a central mechanism and a tire vulcanizing bladder assembly attached to the central mechanism. The bladder assembly includes a cylindrical tire vulcanizing bladder, a lower ring portion, and an upper ring portion. The lower ring portion and the upper ring portion are respectively provided at the peripheral edge portion of the lower end opening of the bladder and the peripheral edge portion of the upper end opening, and the bladder is attached to the central mechanism through these.

  When the bladder assembly is attached to the central mechanism, it is moved to a position near the central mechanism using a hoist crane or the like. Here, when the bladder assembly is lifted and moved, there is a problem that the upper ring portion is displaced from the lower ring portion or becomes unstable. For this reason, it is necessary to take measures such as slowing down the speed at which the bladder assembly is moved, or providing temporary fixing to prevent the upper ring portion from shifting. However, these measures are an obstacle to shortening the work time for attaching the bladder assembly to the central mechanism of the tire vulcanizer. 2. Description of the Related Art Conventionally, a bladder transport apparatus has been proposed for the purpose of easily and quickly replacing a bladder assembly (see Patent Document 1). However, the proposed transport apparatus has a problem that a complicated mechanism is required.

JP-A-6-134765

  SUMMARY OF THE INVENTION An object of the present invention is to provide a tire vulcanization bladder assembly mounting method capable of positioning a tire vulcanization bladder assembly more easily and accurately and efficiently mounting it on a central mechanism of a tire vulcanizer. There is to do.

  In order to achieve the above object, a tire vulcanizing bladder assembly mounting method according to the present invention includes a cylindrical tire vulcanizing bladder, a lower ring portion that sandwiches a peripheral edge of a lower end opening of the bladder, and the bladder. A vulcanizing bladder assembly having an upper ring portion that sandwiches a peripheral edge portion of the upper end opening of the tire is attached to a central mechanism of a tire vulcanizer via the lower ring portion and the upper ring portion. In the mounting method of the bladder assembly, the upper ring portion is placed on the lower ring portion, and the engagement portions provided on the opposing surfaces of the lower ring portion and the upper ring portion are engaged with each other, In a plan view, the relative movement in at least the non-circumferential direction between the lower ring portion and the upper ring portion is restricted, and the vulcanization is performed with the lower ring portion and the upper ring portion being aligned. For bladder assembly When the tire vulcanization bladder assembly is mounted on the center mechanism, the positioning table is placed on a predetermined positioning portion of the tire vulcanizer, After the lower ring portion of the vulcanizing bladder assembly placed on the positioning table is positioned at the center alignment with the central mechanism and at a position above the central mounting portion of the central mechanism, The lower ring portion is fixed to the center attachment portion, and the center post and the upper ring portion are inserted into the upper ring portion with a center post moved upward from the center portion of the center attachment portion. It is fixed.

  According to the present invention, the engaging portion is provided on the opposing surfaces of the lower ring portion and the upper ring portion. Therefore, by engaging the engaging portions and placing the upper ring portion on the lower ring portion, relative movement in at least the non-circumferential direction between the lower ring portion and the upper ring portion is restricted in plan view. At the same time, the lower ring portion and the upper ring portion can be aligned. Accordingly, the upper ring portion is easily maintained in a state where it is stably placed on the lower ring portion without being displaced. Since the bladder assembly is placed in this stable state on the positioning table, the lower ring part is used as the central mechanism by placing this positioning table on the preset positioning unit of the tire vulcanizer. It can be arranged at the centered position and above the center mounting portion of the center mechanism. Therefore, work for fixing the lower ring part to the center mounting part, and the center post and the upper ring part are fixed with the center post moved upward from the center part of the center mounting part being inserted into the upper ring part. Work difficulty is reduced. Therefore, the bladder assembly can be efficiently attached to the central mechanism without using a complicated device.

It is explanatory drawing which illustrates the bladder assembly used for this invention by a longitudinal cross-sectional view. It is explanatory drawing which illustrates the bladder assembly of FIG. 1 by planar view. It is explanatory drawing which illustrates the lower ring part of FIG. 1 by planar view. It is explanatory drawing which shows the modification of the lower ring part of FIG. 3 by planar view. It is explanatory drawing which illustrates the left half of the bladder assembly of the state which mounted the upper ring part of FIG. 1 on the lower ring part, and engaged the engagement parts by a longitudinal cross-sectional view. It is explanatory drawing which illustrates the positioning stand used for this invention by planar view. It is explanatory drawing which illustrates the positioning stand of FIG. 6 by a longitudinal cross-sectional view. It is explanatory drawing which illustrates the bladder assembly mounted in the positioning stand by a longitudinal cross-sectional view. It is explanatory drawing which illustrates the state which has arrange | positioned the positioning stand of FIG. 8 in the positioning part of a tire vulcanizer by the longitudinal cross-sectional view of the left half. It is explanatory drawing which illustrates the state which attached the lower ring part of FIG. 9 to the center mechanism by the longitudinal cross-sectional view of the left half. It is explanatory drawing which illustrates the state which made the center post penetrate the upper ring part of FIG. 10 by a longitudinal cross-sectional view. It is explanatory drawing which illustrates the state which is vulcanizing a green tire with the tire vulcanizer equipped with the bladder assembly of FIG. 1 by the longitudinal cross-sectional view of the left half. It is explanatory drawing which shows the modification of an engaging part by planar view of a lower ring part. It is explanatory drawing which expands the engaging part of FIG. 13 and illustrates it by a longitudinal cross-sectional view. It is explanatory drawing which illustrates the modification of a positioning stand by planar view. It is explanatory drawing which illustrates another modification of a positioning stand by planar view.

  Hereinafter, a method for attaching a bladder assembly for tire vulcanization according to the present invention will be described based on the embodiments shown in the drawings.

  A tire vulcanizing bladder assembly 1 (hereinafter referred to as a bladder assembly 1) used in the present invention illustrated in FIGS. 1 to 3 includes a rubber tire vulcanizing bladder 2 (hereinafter referred to as a bladder 2), a metal A lower ring portion 4 and an upper ring portion 5 are provided. The lower ring portion 4 includes an annular inner ring member 4A, an annular outer ring member 4B, and a fixing bolt 7 that connects the inner ring member 4A and the outer ring member 4B. The upper ring portion 5 includes an annular inner ring member 5A, an annular outer ring member 5B, and a fixing bolt 7 that connects the inner ring member 5A and the outer ring member 5B.

  The bladder assembly 1 further has engaging portions 6 (6a, 6c) that engage with each other on opposing surfaces of the lower ring portion 4 and the upper ring portion 5. In addition, the dashed-dotted line CL in a figure has shown the center position of the lower side ring part 4 and the upper side ring part 5. FIG. 9-12 shows the center position of the lower ring part 4 and the upper ring part 5, and the center position (axial center) of the center mechanism 9 (center post 10).

  The bladder 2 is a cylindrical body, and the annular peripheral edge 3a of the lower end opening in the cylinder axis direction of the cylindrical part 3 and the annular peripheral edge 3b of the upper end opening are respectively in relation to the wall thickness of the cylindrical part 3. It is relatively thick. In order to attach the bladder assembly 1 to a tire vulcanizer 8 (central mechanism 9) described later, a lower ring portion 4 and an upper ring portion 5 are attached to the peripheral edge portion 3a and the peripheral edge portion 3b, respectively.

  The inner ring member 4A constituting the lower ring portion 4 has a cylindrical mounting hole 4c extending downward, and a portion extending downward is inserted into the outer ring member 4B. A screw thread is provided on the inner peripheral surface of the mounting hole 4c. The inner ring member 4 </ b> A and the outer ring member 4 </ b> B are integrated by the fixing bolt 7 with the peripheral edge portion 3 a sandwiched between them. A plurality of fixing bolts 7 are arranged at intervals in the circumferential direction around the center position of the mounting hole 4c.

  The inner ring member 5A constituting the upper ring portion 5 has a cylindrical through hole 5c at the center, and the portion having the through hole 5c is inserted into the outer ring member 5B. The inner ring member 5 </ b> A and the outer ring member 5 </ b> B are integrated by the fixing bolt 7 with the peripheral edge 3 b sandwiched between them. A plurality of fixing bolts 7 are arranged at intervals in the circumferential direction around the center position of the through hole 5c.

  In this embodiment, an engaging convex portion 6 a and an engaging concave portion 6 c are provided as the engaging portion 6. The engaging convex portion 6a is formed on the upper surface of the inner ring member 4A, and the engaging concave portion 6c is formed on the lower surface of the inner ring member 5A. As illustrated in FIG. 3, the engaging convex portion 6 a is formed in an annular shape with the center position of the mounting hole 4 c as the center. Further, in this embodiment, the lower surface of the inner ring member 5A is a slope inclined upward from the outer peripheral side toward the inner peripheral side (through hole 5c), and the slope itself is the engaging recess 6c. .

  The engagement convex part 6a can adopt not only an annular shape continuous in the circumferential direction but also various specifications (shapes). For example, as shown in FIG. 4, a plurality of engaging projections 6a can be provided at intervals in the circumferential direction. It is preferable that the engaging protrusions 6a are scattered at three or more locations (for example, 3 to 8 locations) in the circumferential direction and arranged at equal intervals in the circumferential direction. The engaging recess 6c not only uses the lower surface (slope) of the inner ring member 5A as it is, but also actively provides a concave portion (member) on the lower surface of the inner ring member 5A. Can also be used as the engaging recess 6c.

  The bladder assembly 1 before being attached to the tire vulcanizer 8 is stored with the upper ring portion 5 placed on the lower ring portion 4 as illustrated in FIG. In this storage state, the engaging convex portion 6 a of the lower ring portion 4 and the engaging concave portion 6 c of the upper ring portion 5 are engaged, and the bladder 2 projects to the outer peripheral side of the lower ring portion 4 and the upper ring portion 5. ing. By engaging the engaging convex part 6a and the engaging concave part 6c, the lower ring part 4 and the upper ring part 5 are not relatively shifted from front to back and from side to side, and the lower ring part 4 (mounting hole 4c). ) And the center position in plan view of the upper ring portion 5 (through hole 5c) are in alignment with each other and are in a centered state. The upper ring portion 5 in the storage state can move upward with respect to the lower ring portion 4, but the movement in the plane direction is restricted.

  In this embodiment, even if the engaging convex part 6a and the engaging concave part 6c are engaged, the upper ring part 5 is centered on the center position of the through hole 5c (mounting hole 4c) with respect to the lower ring part 4. Thus, it can move in the circumferential direction. That is, the upper ring portion 5 is only restricted from moving in the non-circumferential direction in plan view. However, since the upper ring portion 5 and the lower ring portion 4 are connected by the bladder 2, the circumferential movement of the upper ring portion 5 is restricted by the rigidity of the bladder 2. Therefore, the upper ring portion 5 can be freely moved only substantially upward with respect to the lower ring portion 4, and movement in other directions is restricted. Therefore, the upper ring portion 5 is stably placed on the lower ring portion 4 and maintained in a centered state by the engagement convex portion 6a and the engagement concave portion 6c engaging with each other. .

  In the present invention, the positioning table 11 illustrated in FIGS. 6 and 7 is used. In this embodiment, the positioning table 11 is composed of a plurality of divided bodies 11A and 11B. The divided bodies 11A and 11B are not limited to two but can be three or more, but two to four are appropriate. Each of the divided bodies 11 </ b> A and 11 </ b> B has a base part 12 and leg parts 13 extending downward from the base part 12.

  The lower ring portion 4 (outer ring member 4B) is placed in contact with the base portion 12. The upper surface of the base part 12 has a shape in which the abutting part of the lower ring part 4 (outer ring member 4B) is fitted. In this embodiment, the upper surface of the arcuate base portion 12 in plan view has an uneven shape corresponding to the uneven shape of the lower surface of the outer ring member 4B in vertical sectional view. The base part 12 protrudes in the arcuate outer peripheral side with respect to the leg part 13 in plan view. The outer ring member 4B placed on the pedestal 12 is stably held by the pedestal 12, but the outer ring member 4B can be smoothly attached to and detached from the pedestal 12 up and down.

  The procedure for attaching the above-described bladder assembly 1 to the central mechanism 9 of the tire vulcanizer 8 is as follows.

  As illustrated in FIG. 8, the bladder assembly 1 is placed on the positioning table 11 (11 </ b> A, 11 </ b> B) outside the tire vulcanizer 8. In the bladder assembly 1 placed on the positioning table 11, the upper ring portion 5 is placed on the lower ring portion 4 and the engaging portions 6 (6a, 6b) are engaged with each other. The engagement of the engaging portion 6 restricts the relative movement in at least the non-circumferential direction between the lower ring portion 4 and the upper ring portion 5 in plan view. At the same time, the lower ring portion 4 and the upper ring portion 5 are aligned.

  Next, the positioning table 11 on which the bladder assembly 1 is placed is moved to the tire vulcanizer 8 using a crane, a forklift, or the like in this state. In this movement, the lower surface of the base 12 is supported by a forklift claw, or a suspension wire is connected to the base 12 via a jig.

  And as shown in FIG. 9, the positioning stand 11 (leg part 13) is arrange | positioned in the positioning part 18 set beforehand of the tire vulcanizer 8. As shown in FIG. In this embodiment, the inner peripheral end surface of the lower side mold 16 b arranged in an annular shape around the center mechanism 9 of the tire vulcanizer 8 is the positioning portion 18. The positioning base 11 (leg part 13) can be reliably arranged on the positioning part 18 by moving the leg part 13 downward along the inner peripheral end face. The positioning unit 18 is not limited to this and can be set as appropriate. For example, a recess or the like in which the lower end portion of the leg portion 13 is fitted can be formed, and this recess can be used as the positioning portion 18.

  By disposing the positioning table 11 on the positioning unit 18, the lower ring portion 4 of the vulcanizing bladder assembly 1 placed on the positioning table 11 is disposed at a position aligned with the center mechanism 9, and The central mechanism 9 is disposed above the center mounting portion 10a. That is, the positioning table 11 is formed on the premise that the positioning table 11 is arranged in the positioning unit 18. When the positioning table 11 is arranged on the positioning unit 18, the lower ring part 4 placed on the positioning table 11 is arranged at a position aligned with the center mechanism 9, and the center mechanism 9 is attached to the center. The positioning table 11 is formed in advance so as to meet the specifications arranged above the portion 10a.

  Next, as illustrated in FIG. 10, the center mechanism 9 is moved upward to the position of the lower ring portion 4, and the bladder assembly 1 is centered on the center position of the mounting hole 4 c (the axis of the center post 10). By rotating, the screw part of the inner ring member 4A and the screw part of the center mounting part 10a are screwed together. Thereby, the inner ring member 4A is fixed to the center mounting portion 10a. At this time, since the mounting hole 4c and the through hole 5c are aligned with each other, the center post 10 and the through hole 5c are aligned with each other.

  Next, as illustrated in FIG. 11, the center post 10 is moved upward as it is from the center of the center mounting portion 10 a and is inserted into the through hole 5 c. Next, the attachment of the bladder assembly 1 to the tire vulcanizer 8 is completed by fixing the center post 10 and the upper ring portion 5 (inner ring member 5A) with a predetermined fixture. Thereafter, the lower ring portion 4 is separated from the base portion 12, and the positioning base 11 is taken out of the tire vulcanizer 8.

  In the process of attaching the bladder assembly 1 to the tire vulcanizer 8, the relative movement in the non-circumferential direction between the lower ring portion 4 and the upper ring portion 5 is restricted in plan view as described above, and the lower side The ring part 4 and the upper ring part 5 can be in a state of being aligned. Accordingly, the upper ring portion 5 is easily maintained in a state where it is stably placed on the lower ring portion 4 without being displaced.

  By positioning the positioning base 11 on which the bladder assembly 1 is placed in the positioning portion 18, the lower ring portion 4 is in a position aligned with the center mechanism 9, and the center mounting portion of the center mechanism 9 is placed. It can be arranged at a position above 10a. Therefore, it is possible to easily perform the operation of attaching the bladder assembly 1 to the central mechanism 9.

  More specifically, since the bladder assembly 1 is stable, it is not necessary to slow down the moving speed of the positioning table 11, and quick movement is possible. Further, in the bladder assembly 1 in a stable state, misalignment between the lower ring portion 4 (mounting hole 4c) and the upper ring portion 5 (through hole 5c) is suppressed. Therefore, the difficulty of the operation | work which aligns the through-hole 5c with respect to the center post 10 with the center alignment of the attachment hole 4c with respect to the center attachment part 10a is reduced. Therefore, by providing the engaging portion 6 on the opposing surface of the lower ring portion 4 and the upper ring portion 5 and using the positioning table 11, the bladder assembly 1 can be used as a central mechanism without using a complicated device. It can be installed efficiently.

  As illustrated in FIG. 12, a vulcanization mold 15 is attached to the tire vulcanizer 8 equipped with the bladder assembly 1. In this embodiment, the vulcanizing mold 15 includes an annular upper side mold 16a and a lower side mold 16b, and a plurality of sector molds 17 arranged in an annular shape.

  The vulcanization mold 15 in which the green tire G is disposed is closed, and a medium M such as steam or nitrogen gas is injected into the bladder 2 from the injection port 10 b formed in the center post 10. As a result, the green tire G is vulcanized by being pressurized and heated between the expanded bladder 2 and the vulcanization mold 15. When the bladder assembly 1 is removed from the tire vulcanizer 8 for replacement, maintenance, or the like, a procedure reverse to the above-described attachment work process may be performed. Therefore, the removal operation of the bladder assembly 1 can also be performed efficiently. That is, by using the bladder assembly 1 and the positioning table 11, the bladder assembly 1 can be efficiently attached to and detached from the central mechanism 9.

  The engaging convex portion 6a and the engaging concave portion 6c that engage with each other may be provided on either the lower ring portion 4 (inner ring member 4A) or the upper ring portion 5 (inner ring member 5A). That is, the engaging convex portion 6 a can be provided in the upper ring portion 5, and the engaging concave portion 6 c can be provided in the lower ring portion 4. Alternatively, the engaging convex portion 6 a can be provided in the lower ring portion 4 and the upper ring portion 5, and the engaging concave portion 6 c can be provided in the lower ring portion 4 and the upper ring portion 5.

  The engaging portion 6 is not limited to the specification (shape) exemplified in the above-described embodiment, but engages each other, and at least non-circumferential movement of the lower ring portion 4 and the upper ring portion 5 is performed in a plan view. If it can be regulated, various specifications can be adopted. As illustrated in FIGS. 13 and 14, the lower ring portion 4 (the upper surface of the inner ring member 4 </ b> A) is formed with a plurality of engagement convex portions 6 a at intervals in the circumferential direction, and the respective engagements. An engaging recess 6c is formed between the protrusions 6a. On the upper ring portion 5 (the lower surface of the inner ring member 5A), a plurality of engaging convex portions 6b are formed at intervals in the circumferential direction. In FIG. 13, the members of the upper ring portion 5 (the inner ring member 5A and the engaging convex portion 6b) are indicated by broken lines.

  A portion of the engaging convex portion 6b is inserted into the engaging concave portion 6c between the engaging convex portions 6a adjacent to each other in the circumferential direction, and the engaging convex portion 6b is an inner periphery of the engaging convex portion 6a. It comes into contact with the surface. In this way, the engaging convex portion 6 b engages with the engaging convex portion 6 a and the engaging concave portion 6 c, so that the upper ring portion 5 placed on the lower ring portion 4 is in contact with the lower ring portion 4. Not only the movement in the non-circumferential direction around the center position of the mounting hole 4c (through hole 5c) is restricted, but also the movement in the circumferential direction is restricted. That is, since the relative movement in the circumferential direction between the lower ring portion 4 and the upper ring portion 5 is also restricted by the engagement of the engagement portion 6 in a plan view, the upper ring portion 5 is further stabilized to the lower ring portion 4. Therefore, it can be maintained in a state where it is placed without any deviation.

  In the present invention, the engaging portion 6 can be integrated with the lower ring portion 4 and the upper ring portion 5 by welding or the like, but at least a part of the engaging portion 6 is formed by the engaging portion 6. It can also be configured to be detachable from the surface being provided. For example, all the engaging convex portions 6a and 6b and the engaging concave portion 6c can be attached to and detached from the lower ring portion 4 and the upper ring portion 5 using a fixing tool such as a bolt. Alternatively, only the engagement convex portions 6a and 6b and the engagement concave portion 6c that are arranged at desired positions can be attached to and detached from the lower ring portion 4 and the upper ring portion 5 using a fixing tool such as a bolt. To do.

  By attaching and detaching the engaging portion 6, the worn engaging portion 6 can be easily replaced. In addition, a plurality of types of engaging portions 6 having different specifications (shapes) can be facilitated, and the plurality of types of engaging portions 6 can be attached to the bladder assembly 1 for trial use. According to the result of this trial use, there is also an advantage that an optimum specification for the bladder assembly 1 can be selected from a plurality of types of engaging portions 6.

  The positioning table 11 is not limited to the specification illustrated in the above-described embodiment, and can also have the specification illustrated in FIG. The positioning table 11 is configured such that the divided bodies 11 </ b> A and 11 </ b> B can be connected and disconnected by a connecting member 14. For example, when the connecting member 14 and the respective divided bodies 11A and 11B are detachably attached by bolts or the like and connected, the respective divided bodies 11A and 11B and the connecting member 14 are formed in a C shape in plan view.

  When this positioning table 11 is used, when the bladder assembly 1 is attached to the central mechanism 9, the divided bodies 11 </ b> A and 11 </ b> B are connected by the connecting member 14. Thereby, since the relative positions of the divided bodies 11A and 11B are fixed and integrated with the positioning table 11, the bladder assembly 1 can be easily placed. It is also easy to move the positioning table 11 (11A, 11B) and place it on the positioning unit 18 in a state where the bladder assembly 1 is placed.

  On the other hand, when taking out each divided body 11A, 11B outside the tire vulcanizer 8, the connection by the connecting member 14 is released to make each divided body 11A, 11B independent. Thereby, it becomes easy to take out the divided bodies 11A and 11B from the tire vulcanizer 8.

  As illustrated in FIG. 16, the positioning table 11 may be configured as a single unit formed in a C shape in plan view. With this specification, it is not necessary to adjust the relative positions of the divided bodies 11A and 11B.

DESCRIPTION OF SYMBOLS 1 Bladder assembly 2 Tire vulcanization bladder 3 Cylindrical portion 3a Peripheral portion 3b of lower end opening Peripheral portion 4 of upper end opening Lower ring portion 4A Inner ring member 4B Outer ring member 4c Mounting hole 5 Upper ring portion 5A Inner ring member 5B Outer ring member 5c Through hole 6 Engagement part 6a, 6b Engagement protrusion 6c Engagement recess 7 Fixing bolt 8 Tire vulcanizer 9 Center mechanism 10 Center post 10a Center mounting part 10b Inlet 11 Positioning table 11A, 11B Division Body 12 Base part 13 Leg part 14 Connecting member 15 Vulcanizing mold 16a Upper side mold 16b Lower side mold 17 Sector mold 18 Positioning part

Claims (5)

A vulcanizing bladder set including a tubular tire vulcanizing bladder, a lower ring portion that sandwiches a peripheral edge portion of a lower end opening of the bladder, and an upper ring portion that sandwiches a peripheral edge portion of the upper end opening of the bladder. In the mounting method of the tire vulcanization bladder assembly in which the three-dimensional body is attached to the central mechanism of the tire vulcanizer through the lower ring portion and the upper ring portion,
The upper ring portion is placed on the lower ring portion, and the lower ring portion in a plan view is obtained by engagement between engagement portions provided on opposing surfaces of the lower ring portion and the upper ring portion. And at least the non-circumferential relative movement between the upper ring portion and the lower ring portion and the upper ring portion are aligned with each other, the vulcanization bladder assembly is used as a positioning base. Place it,
When attaching the tire vulcanizing bladder assembly to the central mechanism, the positioning table is placed on the positioning table by placing the positioning table on a preset positioning unit of the tire vulcanizer. After the lower ring portion of the vulcanizing bladder assembly is positioned at a position aligned with the center mechanism and above the center mounting portion of the center mechanism, the lower ring portion is mounted on the center. The center post and the upper ring part are fixed in a state where the central post moved upward from the central part of the center attaching part is inserted into the upper ring part. How to install sulfur bladder assembly.   The mounting method of the tire vulcanization bladder assembly according to claim 1, wherein a divided body divided into a plurality of parts in plan view is used as the positioning table. The divided bodies can be connected and disconnected, and when the vulcanization bladder assembly is attached to the central mechanism, the divided bodies are connected to each other, and the divided bodies are connected to the tires. The method for attaching a tire vulcanizing bladder assembly according to claim 2, wherein, when the outside is taken out of the vulcanizer, the connection between the divided bodies is released.
In an arc   The tire vulcanizing bladder assembly mounting method according to claim 1, wherein the positioning base is an integral object formed in a C shape in plan view.   The tire vulcanizing bladder assembly according to any one of claims 1 to 4, wherein the engaging portion is configured to restrict relative movement in a circumferential direction between the lower ring portion and the upper ring portion in a plan view. Mounting method.

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