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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.

Pending Publication Date: 2021-06-04
吴文朝
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] During the entire use process, the installation and coordination of the air hole sleeve in the exhaust port are relatively high. If it is too loose, it will easily cause shaking, affect the use effect, and there is a risk of falling off, while if it is too tight, it will be inconvenient to disassemble and replace.
[0005] In addition, the valve body of the air hole sleeve is in direct contact with the tire rubber, and the depth of the valve body into the rubber affects the appearance of the tire
The end face of the valve body of the existing air hole sleeve is flat. When the axial position difference between the valve body and the shell occurs, there will be grooves with obvious step differences on the tire. Especially on the curved surface of the tire surface, it will be more obvious, which will affect the product quality

Method used

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  • High-performance spring air hole sleeve
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  • High-performance spring air hole sleeve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like figure 1 , Figure 2a , Figure 2b and Figure 2c As shown, a high-performance spring air hole sleeve provided in this embodiment includes a valve housing 200, a mandrel 100 and a spring. In the valve casing 200, the valve casing 200 has a cavity 205 that penetrates up and down. One end of the cavity 205 is a tapered hole 203 that is sealingly matched with the frustum portion 104 of the mandrel 100, and the other end is a spigot of the mandrel 100. The part 101 is limited to the gear part 207 outside the valve casing 200, the spring is sleeved on the mandrel 100, and its two ends are respectively against the end faces of the frustum part 104 and the gear part 207; the valve housing 200 is in the gear A notch groove B206 is provided at the top of the position part 207 to form a multi-lobed structure at this position. The notch groove B206 extends axially along the valve casing 200 to its valve body; The second outer cylinder 202 corresponding to the taper hole 2...

Embodiment 2

[0034] like figure 1 , Figure 3a , Figure 3b and Figure 3c As shown, the high-performance spring air hole sleeve provided in this embodiment differs from the preferred embodiment 1 in that in this embodiment, the gear part 207 of the valve housing 200 is a cylindrical hole, and the diameter of the cylindrical hole is smaller than the inner diameter of the bore 205 . In order to meet the design function of the structure itself, the diameter of the cylindrical hole needs to be larger than the diameter of the shaft body 102 of the mandrel 100 and smaller than the maximum outer diameter of the mouth portion 101 of the mandrel 100 .

Embodiment 3

[0036] like figure 1 , Figure 4a , Figure 4b and Figure 4cAs shown, the high-performance spring air hole sleeve provided in this embodiment is different from the preferred embodiment 1 in that in this embodiment, the gear part 207 of the valve housing 200 is a conical hole, and the size of the conical hole is The diameter opening is located on the outside, and the maximum diameter of the conical hole is smaller than the inner diameter of the cavity 205 . In order to meet the design function of the structure itself, the maximum diameter of the conical hole needs to be larger than the diameter of the shaft body 102 of the mandrel 100 and smaller than the maximum outer diameter of the mouth portion 101 of the mandrel 100 .

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PUM

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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.

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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Application Information

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IPC IPC(8): B29D30/06B29C33/10
CPCB29C33/10B29D30/0606B29D2030/0617
Inventor 吴文朝
Owner 吴文朝
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