Electromagnetic maintaining type tin wiping device

Abstract

The invention discloses an electromagnetic maintaining type tin wiping device which comprises an electromagnetic device, an electric control assembly, a transition roller and graphite for wiping tin on the roller surface of the transition roller. The electromagnetic device comprises a magnetic rod and an electromagnetic coil; the magnetic rod is arranged in a magnetic field after the electromagnetic coil is electrified; when the magnetic force of the electromagnetic coil is changed, the magnetic rod moves in the direction perpendicular to the transition roller; the top end of the magnetic rod is fixedly connected with graphite; graphite is attached to the roller surface of the transition roller under the action of electromagnetic force on the magnetic rod; the electric control assembly comprises a wire and a power supply; the power supply is electrically connected with the electromagnetic coil through a wire; and a regulator for regulating the magnitude of circuit current is mounted on the wire. According to the tin wiping device, the regulator is arranged to change the magnitude of the circuit current, then the magnitude of the magnetic force of the electromagnetic coil is changed, the height of the magnetic rod is adjusted, graphite on the magnetic rod is attached to the surface of the transition roller, tin wiping is conducted, adjustment is convenient, and the tin wiping effect is good.

Description

technical field [0001] The invention relates to the technical field of glass mechanical tin wiping, in particular to an electromagnetic holding type tin wiping device. Background technique [0002] Float glass is named after molten glass floating on the surface of molten tin. Since this production method does not need to overcome the gravity of the glass itself, the width of the original glass plate can be increased, the pulling speed can be greatly increased, and the output and production scale can be increased; Polished high-quality mirror, its surface flatness and parallelism can be compared with mechanical polished glass, and its mechanical properties and chemical stability are better than mechanical polished glass, so float glass has been popularized quickly since its birth. [0003] The annealing process of float glass is an important step to determine the quality of float glass. It means that after the molten glass is formed in the tin bath, the thermal stress genera...

AI Technical Summary

Problems solved by technology

However, these two structures have certain shortcomings in the actual application process, which is not easy to use.

The first structure is to use the principle of leverage to adjust the height by increasing the counterweight. The leaf spring provides a certain buffer force to ensure good contact between the graphite and the roller surface. Disadvantages: the elasticity of the leaf spring will gradually fail and need to be replaced frequently; the counterweight It is difficult to control how much graphite is added. If more graphite blocks are in hard contact with the roller surface, it will cause vibration. If less graphite is added, the effect of rubbing tin is not good.

In the second structure, the gas spring itself has two states, one is the initial state, and the other is the extended state. The gas spring is controlled to switch between the two states by turning on and off the gas to achieve the function of lifting the graphite block. Disadvantages: its stroke It is fixed and cannot be adjusted. The graphite block may not touch the roller surface or the graphite block presses the roller surface on site. The gas spring is difficult to replace, and the airtightness is not good, and air leakage often occurs

[0006] Moreover, due to the design form of the leaf spring and gas spring, the operator cannot observe the working condition of the tin wiping device at any time. If there is tin slag remaining on the roller surface due to the failure of the leaf spring or gas spring at this time, it will cause scratches on the glass. In this case, only when the original glass quality inspection equipment hundreds of meters away from the sealed box reflects that there is a problem with the quality of the glass, the operator will go to find the place and cause of the problem. During this period, a lot of manpower must be spent and time cost, and the glass during this period is unqualified, which will cause huge losses to the enterprise

[0007] The comparative document with the publication number CN203346281U discloses an adjustable fixed-point tin wiping device. Specifically, pull the handle of the pull rod backwards, and then tighten the fixing nut at the rear after pulling to the required strength, so that it can be wiped and tinned by itself. The device lacks elastic parts, the tin wiping is stiff, and it is easy to damage the surface to be wiped, and the mechanical structure is used to link the tin wiping device, which is cumbersome to operate and complicated in structure

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