JPS6043929B2 - Rotary blade attachment device for cylinder type cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a cylinder-type cutter in which the rotary blade formed as a twisted blade is adjusted to move forward or backward relative to the fixed blade in order to adjust the sliding of the rotating blade formed on the twisted blade with respect to the fixed blade. This invention relates to an improvement in a rotary blade attachment device that can be freely attached to a blade mount.

An object of the present invention is to provide a rotational force mounting device for the above-mentioned cylinder-type cutter that connects a rotating blade formed in a twisted blade to mounting seats provided on both ends of the blade of the rotating blade and on the left and right blade mounts. When installing by tightening the set bolt,
To solve the problem of causing distortion in the blade of a rotating blade, distorting the blade edge of the rotating blade due to the distortion, and impairing sliding contact with a fixed blade.

To explain the drawings more specifically, the cylinder-shaped cutter 1 normally holds an object to be cut, such as a straw culm, in the receiving opening 11 of a machine frame 10 formed in the shape of a machine housing, and then inserts the material into the machine frame 10 into the inner cavity. A fixed blade 14 is fixed to the machine frame 10 and installed in the inner cavity of the machine frame 10 at a position near the delivery side of the feed rolls 12 and 13. At the same time, the rotating blade 15 that rotates while sliding on the fixed blade 14 is connected to the rotating shaft 16.
The rotating shaft 16 is attached to a pair of blade mounts 17, 17 provided at the left and right shaft ends of the
The fixed blade 14 and the rotary blade 15 cut the material to be cut, such as straw culm, which is fed in by the feeding rolls 12 and 13, and cut the material so as to rotate in a cylindrical shape. The cutting pieces are transferred from the cutting chamber 10a in the inner cavity of the machine frame 10, which accommodates and supports the rotary blade 15, into the cutting chamber 10a by the rotation of the rotary blade 15 or by a vane plate appropriately installed on the rotary shaft 16. The rotary force attachment device A for attaching the rotary blade 15 of the rotary blade 15 to the cutter attachment bracket 17 is configured to discharge water to a discharge gutter 18 that can be connected and connected. At this time, in order to enable the rotation locus W of the cutting edge 15a to be adjusted forward and backward relative to the cutting edge 14a of the fixed blade 14, mounting seats 20, 20 are formed on the blade mounting brackets 17, 17, respectively.
When setting the rotary blade 15 with the set bolt 21,
Mounting seat 2 to insert the set bolt 21? The rotary blade 15 is attached to the mounting seat 20/2 by forming the bolt hole 22 formed into a long hole in the direction facing the fixed blade 14 and loosening the nut 23 that tightens the set bolt 21.
0, so that the forward and backward movement of the fixed blade 14 relative to the cutting edge 14a can be adjusted.

By the way, the mounting device A for the fixed blade 14 in the cylinder-type cutter 1 configured as above is such that the rotary blade 15 is mounted obliquely to the rotary shaft 16 when viewed from above, as shown in FIG. When the rotary blade 15 is installed to form a so-called twisted blade and slides against the fixed blade 14 due to the rotation of the rotating shaft 16, the blade edge a of the rotary blade 15 is successively connected to the blade edge of the fixed blade 14 from one end in the longitudinal direction. Since it is designed to make sliding contact and thereby improve sharpness, in the case of the conventional mounting device A, as shown in FIG. Mounting seats 20 and 20,
Each mounting base 2 is formed at different positions in the front and rear when viewed from the axial direction, and supports the blade in a slidable manner.
0a, the cutting edge 15 of the rotary blade 15 at each position.
The blade edge a of the rotary blade 15 is formed along the tangential direction of the rotation locus W of the rotary blade 15 at both left and right ends when adjusting the sliding of the rotary blade 15 with respect to the fixed blade 14. It is arranged so that it can be moved by the same amount in the tangential direction with respect to the rotation locus W.

For this reason, in the conventional fixed blade mounting device A, in order to adjust the blade alignment between the rotary blade 15 and the fixed blade 14 in order to deal with wear, the rotation locus W of the cutting edge 15a of the rotary blade 15 is expanded in diameter. When extruding as shown in FIG. 3, the left and right ends of the rotary blade 15! As shown on the left in FIG. 3, the end of the rotary blade 15 is located at the front in the direction of rotation, and the end is located at the rear in the direction of rotation as shown on the right in FIG. As the side ends move in different tangential directions as shown by the chain arrows in FIG. 5, when the blade alignment adjustment is completed, the The bottom surface of one of the two ends comes to float above the mounting base surfaces 20a, 20a of the mounting seats 20, 20 formed on the blade mounts 17, 17.

From this, after finishing the blade alignment adjustment,
With the set bolts 21..., the left and right ends of the rotary blade 15 are fixed to the respective mounting base surfaces 20a and 2 of the left and right mounting seats 20, 20.
By tightening the blade to 0a, distortion occurs in the blade of the rotary blade 15, and this distortion causes the middle part of the blade edge in the longitudinal direction to become mid-height, which partially disturbs the sliding alignment with the fixed blade 14. There is a problem in that the cutting performance is deteriorated due to the warping, which impairs the accuracy of sliding alignment. The present invention aims to solve this problem, and as described above, the blade of the rotary blade 15 is attached to the left and right blade mounts 17 mounted on the left and right ends of the rotary shaft 16. Mounting seats 20, 20 that slidably support both ends of
are provided at different positions in the rotational direction when viewed from the axial direction, and a bolt hole 22 for fastening the rotary blade 15 with a set bolt 21 is formed in each of the mounting seats 20, thereby providing a rotary blade mounting device. When configuring A, the mounting seats 20, 20 formed on the left and right blade mounts 17, 17, respectively, are mounted on mounting base surfaces 20 that abut the bottom surfaces of both ends of the rotary blades 15 of these 7.
By forming the blades a and 20a so that they are parallel when viewed from the axial direction, as shown in FIGS. 2 and 3, the rotary blade 15 can be adjusted forward and backward relative to the fixed blade 14. Even when the set bolt 21 is tightened, the blade of the rotary blade 15 is prevented from being distorted, thereby improving the accuracy of blade alignment.

In the embodiment of the present invention shown in FIGS. 1 to 3, the mounting seats 20, 20 formed on the left and right blade mounts 17, 17 are attached to the mounting base surface that comes into contact with the end bottom surface 15b of the rotary blade 15. 20
This is an example in which the mounting surfaces 20a and 20a are arranged in parallel when viewed from the axial direction by forming the mounting surfaces 20a and 20a so that they are aligned on the same plane. are the left and right end bottom surfaces 15b and 15b.
are formed so that they are aligned on the same plane, and the rotation axis 1
6, the rising height H from the end bottom surface 15b to the blade edge a at the end that lags behind the rotational direction Y (the right side in FIG. 3) is determined by ) is formed higher than the rising height h from the end bottom surface 15b to the blade edge a at the end of the blade edge a, thereby forming the blade edge a into a twisted blade whose rotation locus is aligned when viewed from the axial direction. be. Also, from this, the amount of movement of the rotary blade 15 relative to the fixed blade 14 when adjusting the blade alignment becomes larger on the end side where the rising height H is increased. A bolt hole 22 provided in the mounting seat 20 located at the rear of the mounting seat 20 is formed so that the set bolt 21 can also be displaced in the axial direction of the rotating shaft 16. In the illustrated embodiment, reference numeral 15c is a bolt hole formed in the rotary blade 15 for inserting the set bolt 21 therethrough.

Next, to explain the function and effect, the rotary blade mounting device for the cylinder type cutter according to the present invention is formed in the left and right blade mounts 17, 17, respectively, in order to tighten both ends of the rotary blade 15 with set bolts 21. The mounting seats 20, 20 are formed in such a state that mounting base surfaces 20a, 20a, which slidably support the respective end bottom surfaces 15b of the rotary blade 15 thereof, are parallel when viewed from the axial direction of the rotating shaft 16. Therefore, in order to adjust the alignment of both ends of the rotary blade 15 with the fixed blade 14, tighten the set bolts 21 and attach them to each mounting surface 20.
When sliding on the top a, the sliding directions of the bottom surfaces 15b and 15b of the left and right ends of the rotary blade 15 are aligned in the same direction, so after adjusting the blade alignment, tighten the set bolt 21 again to rotate. Even if the left and right ends of the blade 15 are fastened to the mounting surface 20a of the mounting seat 20, the blade of the rotary blade 15 is not distorted, and the entire blade edge a of the rotary blade 15 is fixed. The blade can be precisely aligned with the cutting edge 14a of the blade 14.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of a cylinder-type cutter that can implement the rotary blade mounting device according to the present invention, FIG. 2 is a partially cutaway side view of the main part of the same cutter, and FIG. 3 is a perspective view of the main part of the same cutter.
FIG. 4 is a plan view of a conventional rotary blade mounting means, and FIG. 5 is an explanatory view of the same as seen from the side. Explanation of drawing symbols, 1...Cylinder type cutter, 1
0... Machine frame, 10a... Cutting room, 11
...Intake port, 12, 13...Feed roll, 14...Fixed blade, 15...Rotary blade, 1
6... Rotating shaft, 17... Blade mounting bracket, 18...
...Discharge gutter, 14a...Fixed blade tip, 1
5a... Cutting edge of the rotary blade, 15b... End bottom surface of the rotating blade, 15c... Bolt hole, W...
...Rotation trajectory as above, 20...Mounting seat, 2
0a...Mounting base surface, 21...Set bolt, 22...Bolt hole, 23...Nut.

Claims (1)

[Claims] 1 Mounting seats 20, 20, which slidably support both ends of the blade of the rotary blade 15, are attached to the left and right blade mounts 17, 17 mounted in a pair on the left and right sides of the rotating shaft 16, respectively. The rotary blades 15 are arranged and installed so as to be different in the rotational direction when viewed from the axial direction of the rotary shaft 16, and the rotary blades 15 are mounted on the mounting seats 20, 20.
In the rotary blade mounting device A for a cylinder type cutter, which is provided with bolt holes 22 for fastening the ends of the blades with set bolts 21, mounting seats 20, 20 provided on the left and right blade mounts 17, 17, Each blade mount 17 is placed in such a state that its mount surfaces 20a, 20a, which are in slidable contact with the bottom surface of the end of the rotary blade 15, are parallel to each other when viewed from the axial direction.
- A rotary blade attachment device for a cylinder type cutter, which is characterized by a 17-inch shape.