JPH0211141Y2 - - Google Patents

Description

[Detailed Description of the Invention] A. Purpose of the Invention (Field of Industrial Application) The present invention relates to a cutting blade for a chipper for producing chips for pulp raw materials, building materials, fuel, and other uses from wood.

(Prior Art) The cutting blade 19 of a chipper conventionally used for manufacturing wood chips is attached to a blade hole 22 provided in a rotary disk 21 supported by a shaft 20, as shown in FIG. Adjustment bolts 23 on both sides of edge b,
23 are screwed together, and the adjusting bolts 23, 23 are brought into contact with the cutting blade adjusting member 24 attached to the rotary disk 21 as shown in FIGS. The size of the chips to be manufactured is adjusted by moving the cutting blade 19 in and out.

(Problems to be Solved by the Invention) The cutting blade 19 of the conventional chipper described above has adjusting bolts 23, 23 screwed together on both sides of its back edge side.
The operation part, that is, the head 25 is placed on the dorsal edge side b of the cutting blade 19.
It is made to protrude further as shown in FIG.

Therefore, a large gap g as shown in FIG. 4 is created between the back edge side b of the cutting blade 19 and the above-mentioned adjustment member 24, and cutting debris enters the product from this gap g during chip cutting. However, there were problems that degraded the quality of the product.

B. Structure of the invention (means for solving problems) The cutting blade of the chipper according to the invention includes a cutting blade 6 that is attached to the blade hole 3 of the rotary disk 1 and cuts the material supported by the receiving blade 15. Its dorsal edge side b
Notches 8, 8 are provided at both ends of the
The operating portions 11, 11 of adjustment bolts 10, 10 are screwed onto the cutting blade 6, and the tips of the adjustment bolts 10, 10 are brought into contact with the cutting blade adjustment member 12 provided on the rotary disk 1.

(Function) When the cutting blade of the chipper configured as described above is attached to the blade hole 3 of the rotary disk 1 as shown in FIG. 1, the back edge side b of the cutting blade 6 is as shown in FIG. The cutting edge adjustment member 1 provided on the rotary disk 1 as shown in FIG.
2, and the gap g created between the two is made small so that cutting debris cannot pass through, so cutting debris will not enter the product from the gap g mentioned above during chip manufacturing, and therefore the product There will be no deterioration in quality.

Furthermore, since the tips of the operating parts 11, 11 of the adjusting bolts 10, 10 are brought into contact with the cutting edge adjusting member 12 of the rotary disk 1, the notches 8, 8
When the adjustment bolts 10, 10 are turned toward the feeding side in the inside, the cutting blade 6 is pushed out so that its cutting edge extends beyond the rotating disk 1, and on the contrary, the adjustment bolt 1
When turning 0 and 10 to the retracting side, the cutting edge of the cutting blade 6 can be retracted from the rotary disk 1.
This adjustment operation is performed in the same manner as the cutting blade of the conventional chipper described above.

(Example) Next, an example of implementation of the chipper related to the present invention will be described based on the drawings.

In Figs. 1 and 2, reference numeral 1 denotes a rotary disk in the chipper A, which is supported on a shaft 2. This rotary disk 1 is provided with a large number of blade holes 3, and the inclined mounting surface 4 of these blade holes 3 is provided with a rotary disk 1. Cutting blade 6 with back blade 5
is attached with a mounting bolt 7.

Reference numerals 8 and 8 denote notches provided on both sides of the back edge side b of the cutting blade 6, respectively, and female threads 9 and 9 are formed from these notches 8 and 8 toward the cutting edge of the cutting blade 6. Adjustment bolts 10 and 1 for 9 and 9 respectively
0 are screwed together, and heads 11, 11 formed into square, hexagonal, etc. shapes and on which a tool is hung and turned are accommodated in the notches 8, 8.

12 corresponds to the back edge side of the cutting blade 6 described above,
A cutting blade adjustment member attached to the rotary disk 1,
Contactor 13, aligned with adjustment bolts 10, 10,
13 are screwed together, and the heads 11, 11 of the adjustment bolts 10, 10 described above are brought into contact with the contacts 13, 13, and the cutting blade 6 is pushed out or retracted by forward and reverse rotation of the adjustment bolts 10, 10. It is arranged that this will be carried out.

Reference numeral 14 denotes a spout stand disposed opposite to the rotary disk 1, on which is a receiving blade 15 corresponding to the cutting edge 6 of the rotary disk 1, and a spout 17 for supplying material to the rotary disk 1 through an inclined surface 16. A hanging blade 18 is provided on the inclined surface 16.

The cutting blade for the chipper shown in the above embodiment has the heads 11, 11 of the adjustment bolts 10, 10 fitted in the notches 8, 8 provided on both sides of the back edge side, and the back edge side b of the cutting blade 6 as the cutting edge. By bringing the adjustment member 12 close to the adjustment member 12, the gap g between the two can be set to a small size that does not allow cutting debris to pass through. Moreover, the adjustment of the insertion and removal of the cutting blade 6 by operating the adjustment bolts 10, 10 can be performed using a conventional cutting blade. It could be done just as easily.

C. Effects of the invention Since the cutting edge of the chipper according to the invention can have a small gap between its back edge and the cutting edge adjustment member so that cutting debris cannot pass through, cutting debris will not enter the product during chip manufacturing. without compromising its quality.

Since the operating portion of the adjustment bolt can be freely rotated within the notch, the cutting blade can be adjusted in and out in the same manner as in the conventional case.

The objective of the improvement can be achieved at low cost by simply cutting out both sides of the back edge of the cutting blade.

It has the following unique effects.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional front view of the main parts showing an example of implementation of the chipper related to the present invention. FIG. 2 is a side view showing the relationship between the cutting blade and the cutting blade adjustment member in the same as above. Third
The figure is a longitudinal sectional front view of the main parts of a conventional chipper. FIG. 4 is a front view showing the relationship between the cutting blade and the cutting blade adjustment member in the same as above. In the figure, 1 is a rotating disk, 3 is a blade hole, 6 is a cutting edge, b is a back edge side, 8, 8 is a notch, 10, 10
12 is an adjustment bolt, 12 is a cutting blade adjustment member, and 15 is a receiving blade.

Claims (1)

[Scope of utility model registration request] A cutting blade that is attached to the blade hole of a rotary disk to cut the material supported by the receiving blade is provided with a notch at both ends on the back edge side, and the cutting blade is screwed into the notch, and the tip is connected to the cutting blade. A chipper cutting blade characterized by housing an operating part of an adjustment bolt that is brought into contact with a cutting blade adjustment member provided on a rotating disk.