A multi-level protection pneumatic reciprocating saw

Abstract

The invention provides a multistage protection pneumatic reciprocating saw. The multistage protection pneumatic reciprocating saw comprises a rectangular floor base, wherein a supporting arm which vertically extends upwards is arranged at the top of the base, an upper arm which is horizontally arranged is fixedly arranged at the top end of the supporting arm, a lower arm which is horizontally arranged is fixedly arranged at the bottom end of the supporting arm, and the lower arm and the upper arm are arranged correspondingly; a horizontal working table fixedly connected with the base is arranged between the upper arm and the lower arm, and the working table is arranged close to the lower arm, and a saw body is movably arranged between the upper arm and the lower arm. The saw body comprisesa saw blade which is vertically arranged and movably penetrates through the working table, a pneumatic driving device which drives the saw blade to move up and down in the vertical direction is arranged in the base, an air supply protection device is in communication between the high-pressure air source and an input end of the pneumatic driving device and is used for controlling the on-off of high-pressure air, and the air supply protection device comprising an emergency stop switch and a broken saw protection mechanism.

Description

technical field [0001] The invention relates to a saw, in particular to a multi-level protection pneumatic reciprocating saw. Background technique [0002] Saw is one of the common tools in daily life. It is mainly used for cutting wood, etc. According to the classification of driving power, it can be roughly divided into two categories. One is manual saw, which mainly includes the saw body and The saw blade is composed of manually pulling the reciprocating motion of the saw body to drive the reciprocating motion of the saw blade to cut the wood, but it has obvious disadvantages, that is, time-consuming and labor-intensive, and the efficiency of cutting wood is low. The second is the electric saw. Invented by Andreas Steele in 1926, it greatly saves the time and manpower spent on cutting materials. It drives the saw blade to cycle through the motor to cut wood. The saw blade is generally made of tool steel. There are circular, strip and chain types, but there are also certa...

AI Technical Summary

Problems solved by technology

[0002] Saw is one of the common tools in daily life. It is mainly used for cutting wood, etc. According to the classification of driving power, it can be roughly divided into two categories. One is manual saw, which mainly includes the saw body and The saw blade is composed of manually pulling the reciprocating motion of the saw body to drive the reciprocating motion of the saw blade to cut the wood, but it has obvious disadvantages, that is, time-consuming and labor-intensive, and the efficiency of cutting wood is low. The second is the electric saw. Invented by Andreas Steele in 1926, it greatly saves the time and manpower spent on cutting materials. It drives the saw blade to cycle through the motor to cut wood. The saw blade is generally made of tool steel. There are circular, strip and chain types, but there are also certain disadvantages. When the saw blade breaks accidentally, the motor will continue to drive the saw blade to run, and the saw blade will undergo centrifugal motion and endanger the lives and safety of workers. Low performance, in order to overcome the above disadvantages, the inventor designed a multi-level protective pneumatic reciprocating saw with ingenious structure, simple principle, emergency stop when the saw is broken, high safety performance and high cutting efficiency

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