JPH07223207A - Cut and sew safety device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a safety device that prevents an operator from accidentally placing his / her hand on the cut portion of the material to be cut. [Structure] Prior to the cutting operation by the saw blade (4), a cover (11) (11) for covering the upper portion of the material to be cut (1) is provided, and an operator can put a hand on the material to be cut (1). It is designed to prevent the placement of.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a safety device for a cutting saw for cutting wood, for example.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional example of a cutting device using a cross-cut saw. A saw blade (4) made of a circular saw driven by a drive device (3) on the side of a roller conveyor (2) on which a long timber (1) as a material to be cut is placed.
However, it is arranged. When the drive device (3) is driven with the wood (1) sent by the roller conveyor (2) in a predetermined position, the saw blade (4)
Moves in a direction traversing the conveyor (2) and cuts while traversing the wood (1).

[0003]

In the above-described device, when the wood (1) is cut by the saw blade (4), an operator has inadvertently put a hand on the cut part of the wood (1). There is a problem that there is no means to prevent it from being placed, and there is a risk of cutting the hand by the saw blade (4) moving in the direction of the wood (1).

The present invention eliminates such drawbacks,
The purpose of the present invention is to provide a safety device that prevents an operator from accidentally placing his or her hand on the cut portion of the material to be cut.

[0005]

In order to solve the above-mentioned problems, according to the present invention, a cover for covering the upper part of the material to be cut is provided in a cutting saw for moving the saw blade so as to traverse the material to be cut. A drive device for moving the cover from a retracted position to a position covering a material to be cut prior to cutting with a saw blade.

Further, in the above, it is conceivable that the driving device for operating the safety cover is constituted by a cylinder, and the cover is rotated by the cylinder to move from the retracted position to the position where the material to be cut is covered. .

[0007]

As described above, since the upper part of the cutting material is covered with the cover prior to the cutting operation by the saw blade, it is possible to prevent the risk of accidentally placing a hand on the cutting part.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, (11) and (11) are a pair of plate-shaped safety covers arranged on both sides of a saw blade (4) in the direction of advance toward the conveyor (2). Such a safety cover (11) (11) is arranged in a side portion of the roller conveyor (2) in a substantially vertical state as shown in the drawing when the cutting operation is not performed.

A machine base (1) for supporting the saw blade driving device (3)
Air cylinders (13) and (13) on the sides of 2), respectively.
Is pivoted substantially horizontally toward the roller conveyor (2) and vertically pivotable at its bottom end. On the other hand, on the outside of each safety cover (11) (11), a shaft support member (15) is provided along the side surface of the roller conveyor (3).
However, as shown in FIG. 3, the frame (16) of the conveyor (2)
It is attached to the outer surface. One end of a shaft (17) inserted through the shaft support member (15) is pivotally attached to the tip of a rod (14) of the air cylinder (13) via a lever (18). On the other hand, the shaft (17) is fixed to the lower end portion of the safety cover (11) at the other end side, and the shaft (17) supports the safety covers (11) and (11).

Then, as shown in FIG. 2, when the wood (1), which is the material to be cut, is placed at the cutting position on the conveyor (2) and the switch is turned on to cut the saw blade (4). Prior to the advance, the air cylinder (13) (1
3) actuate to cause the rod (14) to project and the lever (1
The safety covers (11) and (11) are rotated forward through the shaft (17) and the shaft (17) to fall to a horizontal state, thereby covering the upper portions on both sides of the cut portion of the wood (1). . When the saw blade (4) moves backward after cutting,
At the same time, the rod (14) of the air cylinder (13) retracts,
Rotate the safety covers (11) (11) to the retracted position shown in FIG.

In FIG. 3, (20) and (21) are air cylinders (1
A supply pipe for supplying air pressure to each pressure chamber of 3), particularly in the middle of the pipe (21) to the pressure chamber on the side where the rod (14) is advanced, a pressure reducing valve with a check valve ( 22) is provided so that when the rod (14) protrudes, that is, the cover (1
1) weakens the force when rotating toward the cover position, so that even if the cover (11) falls down with the hand on the wood (1), the cover (11) will make the hand stronger. I do not pinch it.

In the above, the safety cover (11) (11)
Has an advantage of not only preventing the operator from cutting the hand but also preventing scattering of cutting chips at the time of cutting. In addition, by forming the cover (11) with a transparent body, it is possible to relatively well visually recognize the cutting state even when the material to be cut is covered above.

[0013]

As described above, according to the present invention, the upper part of the material to be cut is covered with the cover prior to the cutting of the saw blade, so that the operator can inadvertently cut the material to be cut with his or her hand placed on it. This has the effect of preventing the danger of being performed. Also,
Since the cover is moved to the original position except when cutting, it does not interfere with the work of installing and taking out the material.

[Brief description of drawings]

FIG. 1 is a perspective view of a saw blade cutting device having a safety cover.

FIG. 2 is a perspective view of the cutting device with a safety cover covering an upper part of a material to be cut.

FIG. 3 is a side view of a drive device portion for operating the safety cover.

FIG. 4 is a perspective view of a cutting device including a conventional cut-and-sew.

[Explanation of symbols]

 (1) Wood (material to be cut) (2) Conveyor (4) Saw blade (11) Safety cover (13) Cylinder

Claims (2)

[Claims] 1. A cut-and-sew that cuts by moving a saw blade so as to traverse a material to be cut, and a cover for covering the upper portion of the material to be cut, and the cover from the retracted position prior to cutting with the saw blade. A safety device for a cut-and-sew, comprising a driving device for moving the cutting material to a position where the cutting material is covered. 2. The safety device for a cut-sew according to claim 1, wherein the drive device is a cylinder, and the cover is rotated to move the cover from the retracted position to the position covering the material to be cut.