Tire vulcanizer and maintenance method of tire vulcanizer

A tire vulcanizer comprising:

• a support structure which supports a mold for vulcanization and molding and includes a platen portion provided with a through-hole that communicates with an inner portion of the mold;
• a guide member which includes a flanged portion in an end portion thereof so as to cause the flanged portion to be detachably supported by a peripheral edge portion of the through-hole;
• and
• a bag head which is slidably inserted into the guide member,
• wherein the bag head includes a restriction member which abuts on the guide member and restricts displacement of the bag head in an insertion direction in a case where the bag head is inserted to a predetermined position set in advance with respect to the guide member,
• the restriction member protrudes outward from an outer peripheral surface of the bag head and is detachably mounted on the outer peripheral surface,
• the guide member becomes movable relative to the bag head when the restriction member is detached from the outer peripheral surface of the bag head, and
• when the guide member is moved upward relative to the bag head and the support structure is detached from the flanged portion, the guide member is capable of being detached from the bag head.