JPS625288Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a safety cover that is attached to a circular saw machine to cover the exposed part of the rotary blade. It is an object of the present invention to provide a safety cover for a circular saw machine that can improve the see-through performance for seeing through parts.

Next, an embodiment of the present invention will be explained with reference to the drawings. In the drawing, 1 is a table of a circular saw M, 2 is
is a rotary blade rotatably supported near the center of the table 1 in the longitudinal direction, and the workpiece moves on the table 1 from the front (left side in Figure 1) to the rear (right side in Figure 1).
The exposed portion 20 of the rotary blade 2 exposed on the table 1 cuts the blade while being transferred to the table 1 .

Reference numeral 3 denotes a main cover that is swingably supported via bolts 4a at the upper end of a support member 4 provided at the rear of the table 1 in order to expose the vicinity of the cutting edge circle A of the exposed portion 20 of the rotary blade 2. The main cover 3 is formed by bending a transparent plate into a cross-sectional shape, and the front part thereof has a groove extending forward in order to guide the clockwise swinging of the main cover 3 by slidingly contacting the workpiece when the workpiece passes through. On the other hand, a guide part 5 extending upwardly is formed, and a lid cover part 6 is formed at the rear thereof, which is curved approximately along the cutting edge circle A of the exposed part 20. The side surface of the vicinity of a connecting portion 7 that connects the portion 6 is bent into a substantially V-shape, and the lower end 7a of this connecting portion 7 is in contact with the upper surface of the table 1. The connecting portion 7 is connected to the front end 20 of the exposed portion 20.
In order to cover the front end 20a as close as possible to the front end 20a, the effective cutting area of the rotary blade 2 with respect to the workpiece, that is, the cutting edge circle A and the horizontal tangent B passing through the upper end of this cutting edge circle A. , the lower end 7a of the connecting part 7
The intersection point C between the main cover 3 and the cutting edge circle A is located near the cutting area E surrounded by the movement trajectory D drawn when the main cover 3 swings.

When cutting a workpiece, the vicinity of the cutting area E can be seen through the main cover 3.

Reference numerals 8 and 8 are sub-covers, and exposed portions 20 are exposed from the main cover 3 as the workpiece passes through.
In order to cover the vicinity of the cutting edge circle A during the passage of the workpiece, the blades are arranged in parallel on the outer surface of both side walls 3a of the main cover 3, and swing relative to the front end of the main cover 3 via pins 9, 9, respectively. The front end 8a is formed in substantially the same shape as the side surface of the guide portion 5 of the main cover 3,
The rear parts 8b are attached to the left and right sides of the exposed part 20 and extend rearward so as to come into contact with the upper surface of the table 1 under their own weight. The front part 8a of the sub-cover 8 that comes into sliding contact with the workpiece together with the guide part 5 of
is swung together with the guide part 5, and the rear part 8b of the sub-cover 8 is pushed up by the workpiece.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in the safety cover of this example, the main cover 3 is formed of a transparent material, and the main cover 3 has a connecting part 7 having a substantially V-shaped side surface near the front end 20a of the exposed part 20 of the rotary blade 2, that is, in the cutting area E. Since it is placed near the main cover 3, the cutting state of the workpiece can be constantly monitored through the main cover 3, improving work efficiency during cutting, and a transparent wall is provided to see through the workpiece being cut. It can be brought as close as possible to area E, and has the effect of significantly improving the visibility when viewing the workpiece, thereby contributing to preventing unauthorized cutting of the workpiece.

In addition, the cover portion 6 of the main cover 3 is removed from the exposed portion 20.
The rear part of the connecting part 7 that covers the vicinity of the front end 20a of the blade is curved along the cutting edge circle A, so that it works together with the sub-cover 8 to effectively and efficiently move the cutting debris generated when cutting the workpiece from the generation area to the rear. It can be discharged smoothly.

That is, the present invention includes a main cover whose rear end is swingably supported above the rear of the table in order to cover the vicinity of the cutting edge circle of the exposed portion of the rotary blade exposed on the table, and a front end of the main cover. The safety cover is provided with a sub-cover whose front end is swingably supported to cover the vicinity of both side surfaces of the exposed part, the main cover being formed of a transparent material, and the main cover being formed of a transparent material. The front and rear portions of the main cover have guide portions that extend upwardly toward the front in order to slide into sliding contact with the passing workpiece and guide the swinging of the main cover, and a guide portion that is curved approximately along the cutting edge circle of the exposed portion. forming a lid covering portion, bending the side surface near a connecting portion between the guide portion and the lid covering portion into a substantially V-shape, and further arranging the connecting portion near the cutting area at the front end of the exposed portion. By doing so, it is possible to improve the visibility of the workpiece being cut and improve the workability, so it is an excellent idea that is extremely practical as a safety cover for a circular saw machine.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a side view of the main parts of the circular saw, Fig. 2 is a partially cutaway plan view of the safety cover, Fig. 3 is a side view of the main cover, FIG. 4 is a side view of the sub-cover, and FIG. 5 is a side view of the main parts of the main cover. 1... Table, 2... Rotating blade, 20... Exposed part, 3... Main cover, 5... Guide part, 6...
Lid cover part, 7...Connecting part, 8...Sub cover, A...
...Blade edge circle, E...Cutting area.

Claims (1)

[Scope of utility model registration request] A main cover whose rear end is swingably supported above the rear of the table in order to cover the vicinity of the cutting edge circle of the exposed part of the rotary blade exposed on the table; The safety cover is provided with a sub-cover that is swingably supported at the front end to cover the vicinity of both sides of the part, the main cover being formed of a transparent material, and the front and rear parts of the main cover having a guide portion extending upwardly toward the front in order to guide the swinging of the main cover by slidingly contacting a passing workpiece; and a cover portion curved approximately along the cutting edge circle of the exposed portion. and bending the vicinity of the connecting part between the guide part and the cover part into a substantially V-shaped side surface,
Furthermore, the safety cover for a circular saw machine is characterized in that the connecting portion is disposed near the cutting area at the front end of the exposed portion.