Spike with thick cap used in pneumatic gun

Abstract

The invention provides a spike with a thick cap used in a pneumatic gun, belonging to the field of shoe making. The spike with a thick cap comprises an elongated and straight spike body and a plastic cap. One end of the spike body is sharpened and the other end of the spike body has an expanding spike head. The plastic cap fits into the close-to-spike head side of the spike body in tight joint, and the spike head is stuck in an upper end of the plastic cap. An axially through return hole is provided in the center of the plastic cap. The spike body goes through the return hole. The radial dimension of the return hole is the same as that of the spike body and is smaller than that of the spike head. The spike has advantages of high structural strength and break-off difficulty, a large pressure area and a small using amount and prevention of left spikes in shoes, improving the quality of shoes.

Description

technical field [0001] The invention relates to the field of shoemaking, in particular to a thick cap cleat for an air pressure gun. Background technique [0002] At present, in the field of shoemaking, the upper and the inner bottom are combined according to the shape of the shoe last to ensure that the finished shoe is shaped. Use cleats to secure when assembling. In the initial stage of the development of the shoemaking industry, special-purpose nails were usually used for shoe nails, but this special nail was replaced by general-purpose air-pressure gun nails due to defects such as inconvenient use and high price. The shape of the air gun nail is similar to that of a staple, and the two ends of the nail body are bent ends at right angles. When in use, the air gun will drive the general air gun nail into the connection. After use, all must be removed to ensure the use The victim's feet are not injured. Although the existing general-purpose air-pressure gun nails can re...

AI Technical Summary

Problems solved by technology

[0003] 1. Due to structural reasons, the existing air-pressure gun nails are easy to break when nailing and pulling out the nails. After the nails are broken, the nail heads cannot be removed, and it is easy to scratch the user's feet.

[0004] 2. Due to the small size of the existing air-pressure gun nails, the pressure area of ​​a single air-pressure gun nail is small, and the number of nails that need to be nailed is large in the production process, and it is easy to miss and pull out during the cleaning process, so it is necessary to increase at least There are two inspection processes, that is, manual nail inspection and nail inspection, but this not only increases the production cost, is time-consuming and laborious, but also because there is a waist iron in the shoe, only the toe of the shoe can be inspected when the nail is inspected, and it is easy to touch the nail by hand. Omission, resulting in unsatisfactory nail inspection results

[0005] 3. Due to the light weight of the existing air-pressure gun nails, it is easy to fall into the upper surface of the shoe, and cannot be taken out after the shoe is finished, which seriously affects the quality of the shoe

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