JP6788174B1 - A cutting blade with a weed adhesive liquid removal hole on the mother plate. - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lose the cutting function of a cutting blade due to a cutting liquid sticking between the cutting liquid and weeds or the like invading between the perfect circular mother plate of the cutting blade and the cutting blade. SOLUTION: Weeds sticking to both sides are discharged as an exclusion hole in which a mother plate between a cutting blade is partially cut off. [Selection diagram] Fig. 1

Description

It relates to a weed removal hole in which a part of a mother plate that overlaps with a shaft-supported cutting blade is partially cut off, and the weeds are crushed by invading between the mother plate and the cutting blade by cutting and rotating to bring a sticky liquid.

Weed cutting work The crushed liquid of juicy weeds that has invaded between the overlapping part of the mother plate of the cutting blade and the cutting blade in the rotation of the cutting work sticks to both sides and is pivotally supported during the cutting rotation. It hindered the rotation of the cutting blade and lost the cutting function.
The present invention corresponds to the work of cutting off the reduced rotational cutting force in Japanese Patent Application No. 2018-155005.
The cutting blade, which was attached to the shaft near the center of gravity and was weakened, had the ability to cut off the object to be cut off, while the contact energy against the object to be cut off was weakened.

When it comes into contact with the cutting abutment, juicy weeds such as spring weeds invade and crush the contact surfaces of the mother plate and cutting blade that have received the rotational centrifugal force of the cutting blade. , Both sides are adhesively bonded, and finally the cutting edge of the cutting blade remains pushed into the inner peripheral area rather than the outer circumference of the mother plate and loses the cutting ability, and the adhesive bonding that occurs frequently thereafter is removed each time. Unless it was done, weed cutting work could not be continued.

As mentioned above, in order to solve the problem, a perfect circular plate-like body with a smooth outer circumference of the cutting blade is called a master plate, and a part of the cutting edge on the tip side protruding slightly 5 mm or less from the outer circumference of the master plate is used. When the cutting blade is pivotally supported on the upper surface of the master plate, the portion of the master plate that overlaps with the cutting blade on the other end side of the shaft support portion is cut off excluding the region of the shaft support, and similarly, the mother plate is cut. Similar to the cutting blade, the shaft support region was cut off at the same distance opposite to the perfect circular center of the plate to obtain a rotary balancer for the cutting.

In addition, when the axially supported cutting blade rotates backward by a maximum of 90 degrees in the direction of rotation and cuts the overlapping portion of the mother plate as described above, the gap between the edge of the cutting blade and the periphery of the cut portion of the mother plate becomes larger. It grows larger and can discharge larger invading weeds.
In addition, even with conventional blades such as saw blades, there were some that had the disk that was the mother plate cut off in various places, but the purpose was simply to reduce the weight of the disk itself, and in the first place they were single plates. Since it is for cutting work, it does not match the function of the present invention in which the cutting blade that rotates on the shaft is superposed on the upper surface of the main plate to perform cutting work.

Since a part of the mother plate that overlaps with the cutting blade of the present invention is used as an exclusion hole, weeds that have invaded between the cutting blade and the mother plate due to the cutting rotation are quickly discharged, and the cutting blade and the mother plate stick to each other. It is no longer attached.
An embodiment of the present invention will be described with reference to FIG.

A bolt 401 screw-fitted from the back surface into the mounting hole 40 of the upper surface 11 of the perfect circular mother plate 1 of the cutting blade having the mounting hole 4 secures the cutting blade 2 on the upper surface 11 by axially supporting the cutting blade 2 with the cutting blade hole 22. Then, if a super-hard alloy tip 31 as a cutting edge protruding 1 mm from the smooth outer circumference 13 to the tip side 41 is attached and rotated in the cutting rotation direction 6 to cut off weeds, the mother plate 1 and the cutting blade are cut. Weeds suddenly invade the mounting gap of 2 and are crushed, sticking to the gap and hindering the free shaft support rotation of the cutting blade 2, and the ultra-hard alloy tip 31 at the cutting edge remains fixed to the inner peripheral region. In response to the inability to exert the cutting function, the portion 42 on the other end side other than the shaft support region 10 of the portion of the master plate 1 overlapping the cutting blade 2 in a state of protruding from the outer circumference 13 is cut off and covered with the cutting blade 2. In addition to the current drawing in which the exclusion hole 110 is located at a position (not shown) and the exclusion hole 1101 is provided at the same distance on the opposite side thereof, the mounting hole 40 on the opposite side is also bolted 401 from the back surface as described above. If a separate cutting blade is pivotally supported by the cutting blade hole 22 on the upper surface 11 and covered with the exclusion hole 1101, the rotational balance in cutting is maintained, and even if weeds invade, the rotation balance is quickly maintained from each exclusion hole. It is no longer possible to make both sides of the main plate 1 and the cutting blade 2 stick to each other, and further, in a region other than the shaft support region 10, the exclusion hole 112 and its contralateral equidistant distance when retracted 45 degrees from the rotation direction 6 In each set of the exclusion hole 1121 and the exclusion hole 113 whose area is expanded to a portion retracted by a maximum of 90 degrees and the opposite side of the exclusion hole 113 and the opposite side of the exclusion hole 1131, each exclusion hole and the chip 31 are outer peripheral. If the outer end of the cutting blade 2 having a shape protruding 1 mm from 13 to the tip side 41 retreats by rotating the shaft support, a part of the weeds cut off will pass through the exclusion hole and adhere to both sides. Further, since all the weeds that have invaded between the overlapping portions of the mother plate 1 and the cutting blade 2 are quickly eliminated, the cutting blade 2 and the mother plate 1 do not stick to each other. The maximum 90-degree retreat in the text is a maximum 90-degree retreat corresponding to the free rotation retreat angle of the cutting blade of less than 90 degrees, and the drawing is a schematic view from a schematic viewpoint.

1 Main plate 2 Cutting blade 4 Mounting hole 6 Rotational direction 10 Axial support area 11 Upper surface 13 Outer circumference 22 Cutting blade hole 31 Chip 40 Mounting hole 41 Tip side 42 End side 110 Exclusion hole covered by cutting blade 2.
112 Exclusion hole retracted by 45 degrees 113 Exclusion hole expanded to the part retracted by 90 degrees 401 Bolt 1101 Exhaust hole 1121 Exhaust hole 1131 Exhaust hole

Claims (2)

A perfect circular plate-like body with a smooth outer circumference of the cutting blade is called a master plate, and a cutting blade whose part is a cutting edge that protrudes slightly less than 5 mm from the outer circumference of the master plate is a shaft on the upper surface of the master plate. A weed exclusion hole that is supported and the portion of the mother plate that overlaps with the other end side in a state where the cutting edge on the tip side protrudes from the outer circumference is excised, leaving the region of the shaft support, and the excised portion is brought to a sticky liquid. Mother plate. The mother plate according to claim 1, wherein the cutting blade in the state of the cutting edge protruding from the outer circumference is rotated backward by a maximum of 90 degrees in the cutting direction and the overlapping portion of the mother plate is cut off.

Images