Punching and cutting rivet

Abstract

The invention provides a punching and cutting rivet which is composed of a rivet body and a rivet stem. A cap edge is arranged at one end of the rivet body, a pipe body is arranged at the other end of the rivet body, and a through hole is arranged in a cavity. A rivet stem cap head is arranged at one end of the rivet stem, a rivet stem rod is arranged at the other end of the rivet stem, a counter bore is arranged in the rivet stem cap head, a punching and cutting edge is arranged on the end face of the counter bore, and the rivet stem rod penetrates in the rivet body from one end of the pipe body and is matched with the rivet body mutually. When flexible material pads for sealing and non-metal materials are clamped between or among two-layer or multi-layer metal plates with holes, and the metal plates serve as a riveting workpieces, the punching and cutting rivet reduces original separate machining processes of the flexible material pads and non-metal materials, solves the problem of flexible material pad machining difficulties, enables punching and riveting to be completed once, achieves the purpose of connection and fixation of the workpiece, greatly reduces labor intensity of operators and production cost, and improves production efficiency.

Description

technical field [0001] The invention relates to a piercing rivet, which can be pierced and riveted at one time. It is suitable for sheet metal, cabinets, furniture, doors and windows, air ducts, automobiles, trains, containers, construction and other fields. Background technique [0002] Blind rivets are widely used in occasions that need to be connected and fixed, especially in occasions where double-sided riveting is inconvenient. [0003] At present, when the workpiece to be riveted is two or more layers of metal plates with preset holes, and a flexible material pad for sealing is sandwiched between the metal plates, such as Figure 5 As shown, there are the following problems in the construction process: In actual production, the shape and size of the preset holes of two or more layers of metal plates can be controlled, but the sealing strip clamped in the middle is a flexible material that is difficult to shape. If the riveting hole is set, it is difficult to align t...

AI Technical Summary

Problems solved by technology

[0003]At present, when the workpiece to be riveted is a two-layer or multi-layer metal plate with pre-set holes, and a flexible material pad for sealing is sandwiched between the metal plates, such asFigure 5 shows the following problems during construction: In actual production, the shape and size of the preset holes of two or more layers of metal plates can be controlled, but the sealing strip clamped in the middle is a flexible material that is difficult to shape. Plate pre-hole alignment

Firstly, this construction method adds a process, increases labor costs, and reduces production efficiency; secondly, this production process brings great production difficulties, because the flexible material is elastic, when the drill drills through the flexible material, Then after exiting, the hole will close automatically, so it is very difficult for the rivet without piercing function to pass through the hole again, the production efficiency is very low, and the operator is also time-consuming and laborious.

There is also a process of piercing rivets, with tapered needles on the mandrel or cap head, but in actual use, due to its tapered design, the flexible material stretches to the periphery of the hole and hugs the cone tightly, resulting in huge Friction, construction is more difficult than drilling

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