JPH07251Y2 - Cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a cutting device for cutting a flat slate plate or the like with a rotary blade of a circular saw.

(Prior Art) Conventionally, when a flat slate plate or the like is cut for size matching at a construction site, it is often cut into an appropriate shape and size by using a push-cut type cutting device or a hand-held circular saw. .

(Problem to be Solved by the Invention) However, in the case of the above-mentioned conventional technique, the former is a fixed blade provided on the surface plate, and a movable blade provided with an operation grip portion is pivotally attached, so that the structure is simple. However, when the movable blade is pressed against the object to be cut, there is a problem that the object to be cut is crushed and the vicinity of the cutting surface is cracked and a beautiful cut cannot be obtained.

In the latter case, chips generated by cutting work are scattered upwards, which causes deterioration of working environment due to dust.
Moreover, the work required skill and skill, and was easily tired by the vibration.

The cutting device of the present invention has been made for the purpose of eliminating the above-mentioned drawbacks and providing a cutting device which can easily and surely cut to an unskilled person at low cost.

(Means for Solving the Problems) The gist of the present invention is to provide a base on which a slit for allowing a circular saw to move in and out is provided in the front and rear direction of a top plate, and a circular saw with a supporting rod disposed below the top plate. The bottom of the support rod is pivotally supported by the base so that the circular saw can be rotated in the direction in which the circular saw moves in and out of the slit, and the upper portion is always attached in the direction in which the circular saw protrudes from the slit by elastic force. A biasing piece is provided on the lower part of the biasing portion and is locked by a stopper for preventing rotation by the elastic force. The position of the stopper in the front-back direction can be finely adjusted. The present invention resides in a cutting device.

The protruding size of the rotary blade of the circular saw from the top plate is 70-90 of the wall thickness of the material to be cut so that the chips do not scatter upward and can be easily divided by bending along the cutting line. It is adjusted by the stopper so that it becomes%. That is, according to the present invention, when cutting an object to be cut such as a slate plate or a cement roof tile, even if the blade portion of the cutting device is not inserted over its entire thickness, a cut is made while leaving the skin. After putting it in, if you apply a slight impact force from the opposite side of the cut, it is intended to be used for cutting things made of materials that can be easily separated. The effect is exhibited.

The circular saw with a supporting rod used in the present invention is preferably driven by electric force. Especially, a newly manufactured one is used, and a grip portion is inserted so that a conventionally used handheld circular saw can be diverted. An outer cylinder that can be held and a saddle that can be held may be used together. In that case, since these outer cylinder and saddle become a part of the support rod, it is necessary to provide elastic force urging means and a locking piece. Further, in this case, if a cushioning material such as a sponge is interposed between the ready-made hand-held circular saw and the outer cylinder, movement of the base due to vibration can be prevented.

(Operation) In the present invention, since it is configured as described above, it is necessary to adjust the protruding size from the slit of the circular saw in advance so that it can be cut while leaving only the epithelium of the cut object. Thus, when the object to be cut is moved on the top plate toward the rotary blade and the cutting operation is started, the chips are blocked by the epithelium and do not scatter upward.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of the present invention, in which a top plate 11 of a base 1 made of a box is provided with a slit 2 in a substantially central portion in a front-back direction (a left-right direction in the drawing). Has been done.

Reference numeral 3 is a saddle for holding a grip 42 of a commercially available hand-held circular saw 4, and as shown in FIG. 2, it is composed of a main holding piece 31 and a holding piece 34, each of which has a bottomed cylinder in half and has a base 34. It is rotatably supported in a fan shape about a support shaft 32 supported on one side portion. A locking piece 33 is projected from the bottom of the saddle 3, and the locking piece 33 has a handle at one end and a shaft having a male screw engraved on the outer periphery is screwed into the base 1 from the outside. The rotation is stopped by a stopper 51 composed of a stop nut of the protrusion adjusting rod 5 that moves forward and backward.

Reference numeral 6 denotes a tension spring, one end of which is fixed to the inner wall of the base 1 and the other end of which is fixed to an upper portion of the saddle 3, so that the rotary blade 41 of the hand-held circular saw 4 moves upward from the slit 2. It is biased in the protruding direction.

Reference numeral 7 is an outlet for inserting the plug 43 of the handheld circular saw 4, and the switch of the handheld circular saw 4 is designed to always close the electric circuit, and the electric circuit is opened and closed by the base 1. This is performed by the switch 71 provided on the outer surface.

The inside of the base 1 serves as a dust receiving portion, and one side is connected to the dust collecting tank 8 having a filter 81 inside.

Reference numeral 9 is a suction blower for reducing the pressure inside the dust collecting tank 8, and reference numeral 91 is an exhaust port.

Next, a method of using the cutting device of the present invention will be described based on the above embodiment.

Prior to the start of cutting, the rotary blade 41 of the hand-held circular saw 4 fitted into the main holding piece 31 of the saddle 3 and held by the holding piece 34 is pulled upward by the tension spring 6 and the slit 2
It stands by on the top plate 11 of the base 1 by the size adjusted by the projection adjusting rod 5. When the object to be cut is placed on the front upper surface of the top plate 11 and transferred toward the rotary blade 41, the rotating rotary blade 41 cuts from the back surface of the object to be cut. Since the surface portion of the object to be cut is not cut, the chips generated by the cutting do not scatter above the object to be cut but fall below the slit 2, and the suction blower 9 causes the dust collecting tank 8 Is collected by suction.

(Effect of the Invention) Since the cutting device of the present invention is configured as described above, it is easy and reliable to move the object to be cut toward the rotary blade regardless of the skill level of the operator. It is safe and sanitary because it is cut into pieces and chips do not scatter upwards. or,
By using a commercial product as a part of the device, it can be provided at a low cost.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention, and FIG. 2 is an exploded perspective view showing only the saddle in the same as above. 1 ... Base, 2 ... Slit, 3 ... Saddle, 4 ... Hand-held circular saw, 5 ... Projection adjusting rod, 6 ... Tension spring,
11 …… Top plate, 31 …… Saddle, 32 …… Support shaft, 33 …… Locking piece, 41 …… Rotating blade, 42 …… Grip, 51 …… Stopper.

Claims (1)

[Scope of utility model registration request] 1. A top plate has a base on which a slit for allowing a circular saw to move in and out is provided in the front-rear direction, and a circular saw with a supporting rod arranged below the top plate, and the bottom of the supporting rod. Is pivotally supported by the base so that the circular saw can be rotated in and out of the slit, and the upper portion is constantly urged by the elastic force in the direction in which the circular saw protrudes from the slit and the lower portion has a locking piece. Is projected,
A cutting device characterized in that it is engaged with a stopper for preventing rotation due to the elastic force, and that the position of the stopper in the front-rear direction can be finely adjusted.