Safety sanding disc for handheld sanding machine

Abstract

The invention discloses a safety sanding disc for a handheld sanding machine. The safety sanding disc comprises a disc body, the upper end of the disc body penetrates through and is rotationally connected with a rotary shaft, and a self-locking box is fixed to the top of the interior of the disc body; the rotary shaft penetrates through the self-locking box, and a plurality of rotary blades are fixed to the circumferential side wall of the section, located in the self-locking box, of the rotary shaft; a control box is fixed to the outer wall of the self-locking box, and a temperature control mechanism is arranged in the control box; and a heat dissipation box and a power box are fixed to the upper end of the disc body. The safety sanding disc has the advantages that electricity is independently provided for electrorheological fluid through a power source in the power box, thus, electricity supplying and stopping of the electrorheological fluid do not have direct connection with operation of the sanding machine, the electrorheological fluid cannot constrain the rotary blades when is not powered on, accordingly, the rotary shaft is idled and cannot drive a rotary disc to rotate, thus, rotating of the disc body is avoided even though a power switch of the sanding machine is turned on by mistake, accordingly, safety accidents caused by errors are effectively avoided, and the safetyof the sanding machine is improved.

Description

technical field [0001] The invention relates to the technical field of sanding machines, in particular to a safety sanding disc for a hand-held sanding machine. Background technique [0002] Sanding machine is suitable for surface cleaning, hair removal, large plane work leveling and polishing of machinery, building decoration, furniture paint, etc.; [0003] Sanding discs are used on hand-held sanding machines, which are easy to replace and have a variety of types. The existing sanding discs have relatively simple functions, and their own heat dissipation and protection capabilities are weak. Overheating of the sanding discs will seriously affect the service life, and high temperature grinding is easy. Fire and other safety accidents are caused, so the existing sanding discs have potential safety hazards. At the same time, the existing sanding discs start to rotate at high speed after the power of the sander is turned on. Low, so there is an urgent need for a safety sandin...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor heat dissipation of the sanding disc in the prior art, and propose a safety sanding disc for a hand-held sander

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