JPH0636886Y2 - Tree edge roll-up prevention device for desktop cutting machine - Google Patents

Description

[Detailed Description of the Invention] [Field of Use of the Invention] The present invention relates to a tree edge winding prevention device in a tabletop cutting machine.

[Background of the invention]

 The conventional technique will be described with reference to FIGS.

When cutting the material 15 to be cut, the handle 9 is lowered so that the downward projection of the safety cover 10 contacts the material 15 to be cut,
The rotating saw 10 exposes the circular saw 8 and starts cutting. Further, when the handle 9 is lowered, the auxiliary covers 11 provided on both lower side surfaces of the safety cover 10 come into contact with the material 15 to be cut and the fulcrum 12
The material 15 to be cut is cut by rotating upward with respect to the fulcrum. When the cutting is completed, the motor part 6 is stopped and the handle 9 is raised, but when the saw blade shaft 7 is not completely stopped, the cut off material 15 moves backward due to contact with the right side surface of the circular saw 8. Then, it contacts the opening of the gear case 5 that covers the upper half of the circular saw 8. When the handle 9 is further raised, the auxiliary cover 11 on the cut material 15 side is lowered and the gear case 5
The material to be cut 15 cut off between the opening and the auxiliary cover 11
If the material to be cut 15 is pinched or cut off, the inside of the saw cover 16 is rotated through the gap between the right side surface of the circular saw 8 and the opening below the gear case 5, and abuts against the safety cover 10. There was a problem such as breakage of 10.

[Purpose of device]

An object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and improve the efficiency and safety of cutting work in a tabletop cutting machine.

[Outline of device]

The present invention reduces the gap between the right side surface of the circular saw behind the gear case opening that covers the upper half of the circular saw and the gear case opening,
In order to keep the cut material cut away from the saw blade side surface, pay attention to the point that a guide plate with a sloped surface on the rear side of the circular saw side is close to the circular saw side surface with respect to the circular saw side surface. The relationship between the gear case, the auxiliary cover, and the guide plate is devised so as to prevent the gear from being caught between the gear case opening and the auxiliary cover and rotating inside the saw cover.

[Example of device]

 The present invention will be described with reference to FIGS.

In the figure, a fence 2 supporting a material 15 to be cut is fixed to the upper surface of a base 1, a holder 3 is connected to the base 1, a holder shaft 4 is a fulcrum above the holder 3, and a gear case 5 is swingable in the vertical direction. To support. A circular saw 8 rotated by a motor unit 6 is mounted on the saw blade shaft 7 of the gear case 5, and a saw cover 16 for covering the upper half of the circular saw 8 is further provided.
Is fixed. The saw cover 16 has a safety cover 10 which is automatically rotatable around the saw blade shaft 7 as a fulcrum, and is provided with a circular saw 8
Is formed so as to cover both front and lower side surfaces of the front part. An auxiliary cover 11 is provided at the lower end of the safety cover 10 with a fulcrum 12 as a fulcrum so as to be swingable by its own weight, and is formed so as to cover both side surfaces of the rear part of the circular saw 8. A notch handle 9 is installed at the tip of the motor unit 6.

Further, in order to mount the circular saw 8, an adjustable guide plate 13 that minimizes the gap between the right side of the circular saw 8 behind the opening of the gear case 5 and the gear case 5 is brought close to the side surface of the circular saw 8 and screwed. It is attached to the gear case 5 by 14. The guard plate 13 has an inclined surface 13a of 90 ° or less on the rear side of the saw blade with respect to the right side surface of the circular saw 8.

In the above structure, when cutting the material 15 to be cut, when the handle 9 is lowered and the lower protruding portion of the safety cover 10 comes into contact with the upper surface of the material 15 to be cut, the safety cover 10 rotates upward and the circular saw 8 Is exposed and cutting is started. When the handle 9 is further lowered, the auxiliary covers 11 provided on both lower side surfaces of the safety cover 10 come into contact with the material 15 to be cut and pivoted upward with the fulcrum 12 as a fulcrum to cut the material 15 to be cut.

When the cutting is completed, the motor unit 6 is stopped and the handle 9
At this time, the cut material 15 (cut-off side) moves rearward due to contact with the right side surface of the circular saw 8, but the side surface of the circular saw 8 provided behind the opening of the gear case 5 Since the guide plate 13 comes into contact with the inclined surface 13a of the guide plate 13 and moves in a direction away from the right side surface of the circular saw 8, it is not caught between the opening of the gear case 5 and the auxiliary cover 11.

Further, even when the material to be cut 5 is thin, the guide plate 13 can prevent the saw cover 16 from entering the inside.

In the present invention, the guide plate 13 is provided behind the opening of the gear case 5.
Although the screw is mounted close to the side surface of the circular saw 8 with the screw 14, the same effect can be obtained by disposing the screw close to the side surface of the circular saw 8 behind the opening of the gear case 5 and integrally formed.

[Effect of device]

According to the present invention, the clearance between the right side of the circular saw and the gear case can be adjusted to the minimum at the rear of the gear case opening that covers the upper half of the circular saw, and the rear side of the circular saw can be set to the side of the circular saw.
Since the guide plate with the inclined surface of 90 ° or less is brought close to the side surface of the circular saw, the material to be cut does not get caught between the gear case and the auxiliary cover.

Further, a thin material to be cut does not rotate inside the saw cover and damages the safety cover, so that the work can be cut safely and efficiently.

[Brief description of drawings]

FIG. 1 is a side view of a tabletop cutting machine showing an embodiment of the present invention,
2 is a front view of FIG. 1, FIG. 3 is a sectional view taken along line AA of FIG. 1, FIGS. 4 and 5 are side views showing a conventional technique, and FIG.
The drawing is a sectional view taken along line BB in FIG. In the figure, 5 is a gear case, 8 is a circular saw, 10 is a safety cover, 11 is an auxiliary cover, 13 is a guide plate, 13a is an inclined surface, 14 is a screw, and 15 is a material to be cut.

Claims (1)

[Scope of utility model registration request] 1. A gear case that swings up and down above a holder connected to a base. The gear case has a circle, a saw cover for covering the upper half of the circle, and both front and lower side surfaces of the circle. In a table-top cutting machine having a safety cover for covering the lower part of the safety cover and an auxiliary cover for supporting the lower rear side surfaces of the circular part pivotally supported by its own weight below the safety cover, the upper half of the circular part is The gap between the right side of the circular saw and the gear case can be adjusted to the minimum behind the gear case opening to cover, and the cut material is kept away from the side of the circular saw. A wood edge roll-up prevention device for a tabletop cutting machine, characterized in that a guide plate having an inclined surface is closely attached to the side surface of a circular saw.