JPS593852Y2 - Band saw blade protrusion prevention device for band saw machines - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a band saw blade protrusion prevention device for a band saw machine.

Conventional band saw blade protrusion prevention devices for band saw machines used a phototube to detect the movement of the band saw blade in and out.
Since the signal was sent from the relay device to a path called a stop switch, the structure was complicated and expensive.

The present invention was developed in view of the above-mentioned situation, and aims to provide a band saw blade protrusion prevention device for a band saw machine that has a simple structure, is less likely to malfunction, and is highly economical.

The band saw blade protrusion prevention device for a band saw machine of the present invention is provided with a means for detecting the coming and going of the band saw blade during rotation on the back side of the band saw blade, and a rotating body that is arranged opposite to the back side of the band saw blade so as to be able to come into contact with the band saw blade. a rotating body support member which is rotatably supported by a mounting member fixed to the band saw body and has the rotating body attached to one end; and a detector attached so as to make contact with it.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the band saw blade protrusion prevention device for a band saw machine of the present invention will be described below with reference to FIGS. 1 and 2.

Reference numeral 1 denotes a band saw blade, which is rotatably driven by a mining car (not shown).

Reference numeral 2 denotes a mounting member, which is fixed to the band saw body (not shown) with a mounting member fixing screw 3, and a rotating body support member 5 is rotatably attached to the mounting member 2 via a support shaft 4. .

At the lower end of the rotor support member 5, the rotor 6 is arranged such that it comes into contact with the back surface of the bandsaw blade 1 by the weight of the rotor 6 and the rotational force generated by the weight of the rotor support member 5 downward from the mounting position of the spindle 4. attached.

Reference numeral 7 denotes a detector, which is disposed opposite to the end of the rotor support member 5 opposite to the end at which the rotor 6 is attached, and is attached so as to be able to come into contact with the rotor support member 5 when the rotor support member 5 rotates.

When the rotating body support member 5 comes into contact with the detector 7, the detector 7 is activated and issues an alarm, and the electric motor (
(not shown).

Therefore, when the rotating band saw blade 1 is displaced and moves in the direction of the cutting edge (in the direction of arrow A), the rotating body 6 also moves in the same direction, and therefore the other end of the rotating body support member 5 moves in the direction of arrow B. .

When the rotating body support member 5 comes into contact with the detector 7, the detector 7 is activated and issues an alarm, so that the electric motor is manually stopped or the rotation of the electric motor is automatically controlled and the bandsaw blade 1 is
It is designed to prevent the objects from jumping out.

As described above, the band saw blade protrusion prevention device for the band saw machine of this embodiment has a rotating body that directly contacts the band saw blade and operates the detector in conjunction with this, so the structure is simple and there are few malfunctions.

Further, since it does not use a controller, a phototube, etc., unlike the conventional method, it can be manufactured at low cost and is economically advantageous.

As described above, the band saw blade protrusion prevention device for a band saw machine of the present invention has advantages such as a simple structure, fewer malfunctions, and excellent economic efficiency.

[Brief explanation of the drawing]

FIG. 1 is a front view showing a part of an embodiment of the band saw blade protrusion prevention device for a band saw machine of the present invention in cross section, and FIG. 2 is a left side view of FIG. 1. DESCRIPTION OF SYMBOLS 1... Band saw blade, 2... Mounting member, 5... Rotating body support member, 6... Rotating body, 7... Detector.

Claims (1)

[Scope of utility model registration request] A band saw blade popping-out prevention device is provided with a means for detecting the coming and going of the rotating band saw blade on the back side of the band saw blade, and the device includes a rotating body arranged oppositely to be able to come into contact with the back side of the band saw blade, and a rotating body fixed to the band saw body. a rotating body supporting member rotatably supported by a mounting member and having the rotating body attached to one end; and a rotating body supporting member installed oppositely to the other end of the rotating body supporting member so as to come into contact when the other end rotates. A band saw blade protrusion prevention device for a band saw machine, characterized in that it is equipped with a detector.