High-performance spring air hole sleeve

A high-performance, air hole cover technology, applied in the field of tire vulcanization, can solve the problems of inconvenient disassembly and replacement, falling off, affecting the use effect, etc.
CN112895539APending Publication Date: 2021-06-04ๅดๆ–‡ๆœ
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Patent Information

Authority / Receiving Office
CN ยท China
Current Assignee / Owner
ๅดๆ–‡ๆœ
Publication Date
2021-06-04

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Abstract

A high-performance spring air hole sleeve comprises a valve shell, a mandrel and a spring, a frustum portion and a spigot portion are arranged at the two ends of the mandrel, one end of a hole cavity of the valve shell is a taper hole matched with the frustum portion of the mandrel in a sealing mode, the other end of the hole cavity of the valve shell is a gear portion limiting the spigot portion of the mandrel outside the valve shell, the spring sleeves the mandrel, and the two ends of the spring abut against the frustum portion and the gear portion respectively; a notch groove is formed in the top end of the spigot portion of the mandrel or the top end of the gear portion of the valve shell to form a multi-clack structure; the whole valve shell is in a cylindrical step shape, the end of an outer cylinder of the gear portion is a conical surface, and a plurality of circumferential grooves arranged in parallel are formed in the surface of the outer cylinder at a conical hole; a transition shaft section with the diameter larger than that of a shaft body is arranged at the joint of the frustum portion and the shaft body of the mandrel, an arc-shaped ring groove is formed in the connecting point of the transition shaft section and the frustum portion, and the end face of the frustum portion of the mandrel is arranged to be in a mushroom head shape. According to the high-performance spring air hole sleeve, the matching precision with a mold exhaust port is high, the stability is good, the exhaust effect is good, the vulcanized product is beautiful and flat, and the product quality is good.
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Description

technical field

[0001] The invention relates to an exhaust accessory of a tire vulcanization molding mold, in particular to a high-performance spring air hole cover, which belongs to the technical field of tire vulcanization. Background technique

[0002] At present, it is known that when manufacturing tires, in the mold that vulcanizes the green tire that has completed the molding process, it is necessary to discharge the air between the green tire and the mold, by setting a number of air outlets on the mold. When the tire is vulcanized, the exhaust port is directly used to exhaust, and the rubber will overflow through the exhaust port, so that a lot of overflowing rubber will be formed on the tire after vulcanization. In order to overcome this shortcoming, people have designed a Air hole sleeve installed inside the exhaust port.

[0003] The structure of the air hole sleeve usually includes a shell and a valve body. The valve body is installed in the shell. One end of the...

Claims

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