Clamping device for wrapping die

Abstract

A clamping device for a wrapping die contains symmetrically arranged overpressure resistant air bags filled with magnetic powders and two magnetic field generation devices for providing the magnetic powders with magnetic fields. Under the action of the magnetic fields, two mutually close ends of the two magnetic powders generate opposite magnetic poles. According to the invention, the magnetic powders are filled into the air bags, and magnetic force of the magnetic powders is utilized to clamp glass. Due to the characteristics of the air bags filled with the magnetic powders, the clamping device can be suitable for effective positioning of glass of different shapes and geometrical dimensions and provides enough clamping force so as to guarantee reliable positioning and clamping of glass. Therefore, the quality of produced finished products can be greatly improved, and the production cost can be saved.

Description

technical field [0001] The invention relates to an edge wrapping mold, in particular to a clamping device for an edge wrapping mold. [0002] Background technique [0003] Edge-wrapped glass is a new type of automotive safety glass, mainly used for side, rear and front windshields of medium and high-end cars. The use of plastic edging glass in automotive safety glass has the following advantages: [0004] (1) The glass and the car body are more closely combined to improve the airtightness. The traditional installation method of automotive safety glass is: put the closed plastic parts directly on the periphery of the glass with tools, and install metal bright trim strips around the glass (some models may not install bright trim strips) to form a glass assembly. During assembly installation, two robots are generally used, equipped with vacuum suction cups and sensors, one applies the sealant and the other installs the windshield into the window frame. And wh...

AI Technical Summary

Problems solved by technology

When the existing edging mold is working, because the glass is used as the insert, when the edging glass is injection-molded, there will be many process changes in a very short period of time, and the glass will be subject to a great impact. The displacement of the glass will cause the glass to be crushed or scratched, so the design of the clamping device is an important part of the edge glass design

The existing clamping devices for glass edging molds generally use suction cup clamping or clamping devices with rubber as positioning parts on the upper and lower molds. When these two clamping methods are used, due to Glass is a curved surface structure, and the shape of the curved surface is ever-changing. Using these two positioning and clamping methods, it is often difficult to combine with the surface of the glass, resulting in insufficient clamping force. At the same time, the suction cup is mostly made of plastic. The vacuum is also unstable due to temperature changes, and it is easy to fall off; the rubber has slight indentations or even scratches on the glass, and it will wear out during use so that it is not firmly pressed.

It is easy to cause the glass to be displaced, which may cause the glass to be crushed or scratched, and at the same time cause the plastic edge part to be not tightly bonded to the glass, resulting in injection molding defects

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