JP2559938Y2 - Cutting mechanism in cylinder type agricultural cutter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cylinder type agricultural cutter for cutting grass, straw culm, etc., in a posture in which a blade is parallel to a main shaft penetrating right and left through a shaft portion of a cutting chamber. And a fixed blade fixedly mounted on a blade support table fixedly installed at the entrance of the cutting chamber so that the blade body is inclined with respect to the axis of the main shaft. The present invention relates to improvement of a cylinder type cutting mechanism to be constituted.

[0002]

2. Description of the Related Art A cylinder-type agricultural cutter A is usually
As shown in FIG. 1, a cutting chamber 2 formed in the shape of a drum is mounted on a machine frame 1 in such a manner that the axial direction thereof is in the left-right direction, and the front side of the peripheral wall of the cutting chamber 2 ( A feed roll case 3 that supports feed rolls 30 and 31 is connected to the front surface of the entrance 20 of the cutting chamber 2 formed on the right side in FIG. And a base end of the supply gutter 32 is connected to an opening on the front side thereof, and a discharge port 21 is opened on the rear side facing the entrance 20 of the cutting chamber 2. Is connected to the base end of the discharge gutter 22. A main shaft S that penetrates left and right is arranged at a shaft center portion of the cutting chamber 2, and left and right shaft ends of the main shaft S are machined via a bearing and a bearing support member (not shown). 1 and one end of the shaft is transmitted to an output shaft of a motor (not shown) via a transmission mechanism, and the main shaft S is driven to rotate clockwise in FIG.

[0003] At the left and right shaft ends in the cutting chamber 2 of the main shaft S, a blade mounting metal 4 having a pair of left and right arm-shaped parts 4a is attached as shown in FIG. Cutter mounting seats 4 separately formed at each end in the radial direction of
0 or a base 4b provided so as to span between the outer ends of the pair of arm-shaped portions 4a as shown by a chain line in FIG.
A rotary blade 5 whose blade edge 50 is oriented along the axial direction of the main shaft S is mounted on a blade mounting seat 40 formed on the outer surface of the cutting blade, and a fixed blade 6 opposed to the rotary blade 5 is cut into a cutting chamber. 2 entrance 2
0 and is fixed to the machine frame 1 by being mounted on a fixed blade support 7 provided on the machine frame 1 and fixed to the supply gutter 32. The material to be cut, which is fed into the cutting chamber 2 by the feeding rolls 30 and 31, is fixedly mounted at a position along the edge of the entrance 20 of the cutting chamber 2 and around the main shaft S. The cutting is performed by a cylinder-type cutting mechanism a including a rotary blade 5 that rotates in a cylindrical shape, and is discharged from a discharge port 21 of the cutting chamber 2.

The rotary blade 5 of the cutting mechanism a
The blade mounting seats 40, 40 provided on the blade mounting metal 4 so that the blade edge 50 thereof is in a posture that is correctly parallel to the axis of the main shaft S.
When the fixed blade 6 to be rubbed with the fixed blade 6 is mounted so that the blade edge 60 thereof is correctly parallel to the axis S 'of the main shaft S, the rotary blade 5 rotates and the cutting operation is performed. When cutting the material to be cut, the range over the entire width in the longitudinal direction of the blade edge 50 of the rotary blade 5 comes into contact with the blade edge 60 of the fixed blade 6 at a time. As shown in FIG. 3, the rotary blade 5 is moved with respect to the axis S ′ of the main shaft S such that one end in the longitudinal direction of the blade edge 50 advances in the rotation direction and the other end delays as shown in FIG. As a result, the rotary blade 5 is sequentially rubbed against the fixed blade 6 from one end of the blade edge 50. At this time,
If the rotary blade 5 is formed such that the blade body 5a is in the shape of a straight plate and the blade edge 50 is continuous in a straight line, the rotation trajectory of each portion of the blade edge 50 in the longitudinal direction will be the central portion of the blade edge 50 in the longitudinal direction. As shown in FIG. 2, the rotary blade 5 usually has a blade body 5a, as shown in FIG. It is formed into a twisted twisted blade.

The relationship between the blade edge 50 of the rotary blade 5 and the blade edge 60 of the fixed blade 6 is such that the rotary blade 5 and the fixed blade 6 have a flat plate-like blade body 5a, 6a. 60 is formed in a straight blade shape that is continuous in a straight line, and the rotary blade 5 is assembled with the blade mounting metal 4 provided on the main shaft S so that its blade edge 50 is parallel to the axis S ′ of the main shaft S. Attach the fixed blade 6 to the fixed blade support 7 fixedly mounted on the machine frame 1 so that the blade edge 60 of the fixed blade 6 is inclined with respect to the axis S ′ of the main shaft S, thereby rotating the fixed blade 6. The same applies to the case where the blade 5 is successively rubbed against the fixed blade 6 from one longitudinal end of the blade edge 50 thereof.

In this case, the blade edge 60 of the fixed blade 6 tilted with respect to the axis S 'of the main shaft S forms a virtual cylindrical surface at the intermediate portion in the longitudinal direction of the fixed blade 6, and the rotary blade 5 rotates. With respect to the rotation trajectory of the blade edge 50, it protrudes into an arcuate surface having a convex shape in plan view, and interferes with the blade edge 50 of the rotary blade 5. In order to avoid this interference, the blade 6a of the fixed blade 6 is spirally wound along the outer surface of a virtual cylinder formed by the rotation trajectory of each part of the blade edge 50 of the rotary blade 5. It is necessary to form a twisted blade.

[0007]

The cutting mechanism a in the conventional cylinder type agricultural cutter configured as described above is as follows.
In order for the rotary blade 5 to successively rub against the fixed blade 6 from one longitudinal end of the blade edge 50, the rotary blade 5
It is necessary to form either the blade blade 5a of the fixed blade 6 or the blade blade 6a of the fixed blade 6 as a twisted blade, which complicates the production of the rotary blade 5 or the fixed blade 6 formed on the twisted blade, and ,
There is a problem that the blade alignment when assembling is troublesome. In addition, it is troublesome to grind the cutting edges of the blade bodies 5a and 6a on the side formed on the twisted blade, and there is a problem that maintenance is troublesome.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve these problems which have occurred in conventional means, and comprises a rotary blade having a blade edge 50 mounted so as to be parallel to an axis S 'of a main shaft S. 5 against the edge 60 of the fixed blade 6 with its edge 60
When the fixed blade 6 is set on the fixed blade support 7 such that the blade edge 60 thereof is inclined with respect to the axis S ′ of the main shaft S so that the fixed blade 6 is successively rubbed from one end side in the longitudinal direction, The intermediate portion in the longitudinal direction of the blade edge 60 of the fixed blade 6 is
Interference with the rotary blade 5 caused by projecting the blade edge 50 of the rotary blade 5 in a convex shape in plan view is eliminated on the rotary blade 5 side while the fixed blade 6 side is formed in a straight blade shape. The purpose is to provide a new means for doing so.

[0009]

According to the present invention, as a means for achieving this object, a fixed blade support, which is disposed at the entrance of the cutting chamber and fixedly mounted on the machine frame, is directly provided. A fixed blade formed in the shape of a blade is assembled with its blade edge inclined at an inclination angle with respect to the axis of the main shaft, and a rotary blade is provided on the outer surface side of an outer end of a blade mounting metal attached to the main shaft. A blade mounting seat for assembling the body is formed and mounted so that a seat surface thereof is formed as a concave arcuate surface that is molded into the main shaft side when viewed in the front-rear direction in the rotation direction of the main shaft. The rotary blade is formed into a straight blade shape that can be bent by using a steel material having elasticity, and is fastened with a set bolt. The blade body of the rotary blade is bent and deformed so that the blade edge follows the concave surface. The present invention proposes a cutting mechanism for a cylinder-type agricultural cutter mounted by mounting.

At the same time, a fixed blade formed in the shape of a straight blade is fixed to a fixed blade support table which is arranged at the entrance of the cutting chamber and fixedly mounted on the machine frame, and the blade edge of which is aligned with the axis of the main shaft. Attach the blade at the angle of inclination and attach the blade of the rotary blade to the blade mounting seat at the outer end of the blade mounting metal to be mounted on the spindle with a set bolt, and the outer surface side of the blade edge of the blade of the rotary blade In addition, the chip mounting seat is formed and mounted so that its seat surface is a concave arcuate surface which is formed on the main shaft side when viewed in the front-rear direction in the rotation direction of the main shaft. A chip formed in a straight plate shape having a bendable edge along a straight line made of steel material is brought into contact with the chip and fastened with a set screw, and the chip is bent and deformed into a shape following the concave seat surface of the chip mounting seat. The present invention proposes a cutting mechanism for a cylinder type agricultural cutter which is mounted by mounting.

[0011]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 4 is an explanatory view obtained by combining a side sectional view and a development view of a main part of a cutting mechanism in a cylinder type agricultural cutter embodying the present invention, wherein S is a main shaft and S '.
Is the axis of the main spindle S, 4 is a blade mounting bracket mounted on the main shaft S, 40 is a blade mounting seat mounted on the outer end of the blade mounting bracket 4, 5 is a rotary blade set on the blade mounting seat 40, 6 Denotes a fixed blade, and 7 denotes a fixed blade support on which the fixed blade 6 is set.

The main shaft S is shown only in a side cross section in FIG. 4 described above, but as shown in FIGS. 1 and 2 above, the axis of the cutting chamber 2 mounted on the machine frame 1 is shown. It is a normal one that is arranged so as to penetrate the part to the left and right, and is supported through left and right shaft ends, and rotates in the direction of arrow a in FIG.

As shown in FIG. 5, the blade mounting metal 4 to be mounted on the main shaft S is a pair of left and right arm-shaped portions 4a opposed to each other.
A base 4b is provided at the outer end of the base 4a so as to extend over the base 4b, and a blade mounting seat 40 for abutting the rotary blade 5 on the outer surface side of the base 4b and assembling with the set bolts 41.
Is formed in a normal form, and the blade mounting seat 40 thereof has the rotating blade 5 to be assembled, and the blade edge 50 is positioned with respect to the axis S ′ of the main shaft S as shown in the developed view of FIG. It is formed so as to be in a parallel state, which is the same as that of the conventional means.

However, the blade mounting seat 40 is provided with the rotary blade 5
As shown in FIG. 5, the seat surface abutting the blade body 5 a of
The intermediate portion in the left-right direction is formed so as to be hollowed out in a concave arc shape with respect to the radiation direction of the main shaft S when viewed in the front-rear direction in the rotation direction of the main shaft S. When the fixed blade 6 is set on the fixed blade support 7 with the blade edge 60 of the fixed blade 6 inclined at a desired inclination angle α with respect to the axis S ′ of the main shaft S, Thus, the intermediate portion in the longitudinal direction of the blade edge 60 of the fixed blade 6 is set to have a protruding shape in which it protrudes in a convex shape with respect to the rotation trajectory of the blade edge 50 of the rotary blade 5, and has a reverse relationship. That is, the fixed blade 6 is inclined at an inclination angle α with respect to the axis S ′ of the main shaft S and is set on the fixed blade support base 7 so that the intermediate portion of the blade edge 60 becomes the blade edge of the rotary blade 5. For the rotation locus Z at the side end of 50,
In FIG. 4, when projecting in a convex shape so as to bite by the distance β, the intermediate portion in the longitudinal direction of the seat surface of the blade mounting seat 40 is drawn toward the main shaft S by an amount corresponding to the distance β. The seat surface of the blade mounting seat 40 is formed to have a concave arc shape when viewed in the front-rear direction in the rotation direction of the main shaft S. And, in this blade mounting seat 40,
Set bolt 41 for fastening blade 5a of rotary blade 5
Are formed not only at both ends in the longitudinal direction but also at an intermediate portion.

The blade mounting metal 4 is provided on the base 4b provided on the outer end side of the left and right arm-shaped portions 4a and the base end side of the arm-shaped portions 4a and fitted on the outer periphery of the main shaft S. Although the boss portion 4c to be formed is integrally connected, the base 4b and the boss portion 4c are divided into right and left,
There is a case where the blade mounting seat 40 is divided into two parts, left and right.

The rotary blade 5 has a blade body 5a having a straight plate shape,
The blade edge 50 is formed in the shape of a straight blade along a straight line, and its blade body 5a is radiated to the blade mounting metal 4 mounted on the main shaft S as shown in FIGS. The blade 4b is mounted on the outer surface of the base 4b mounted on the outer end side in the direction, and is mounted by tightening with the set bolts 41, 41. 5a, the blade edge 50 of the leading edge in the rotation direction due to the rotation of the main shaft S is parallel to the axis S 'of the main shaft S in plan view, as shown in the developed view of FIG. This is no different from the rotary blade 5 of the conventional means.

However, this rotary blade 5 has its blade body 5a.
Is formed in a flat plate shape that can be bent by a steel material having elasticity, and the blade body 5a is attached to the outer end portion of the blade mounting metal 4 at an intermediate portion in the longitudinal direction. Bolt 4 to be fastened to the seat surface of the blade mounting seat 40 to be mounted on the
The bolt insertion hole 51 for inserting 1 ... is formed.

The fixed blade 6 has a blade body 6a formed in a straight plate shape and a blade edge 60 having a linearly continuous blade edge 60. As shown in FIG. The blade 6a is brought into contact with a fixed blade mounting seat 7a of a fixed blade support 7 which is arranged at a position along the lower edge and fixedly mounted on the machine frame 1, and the blade 6a is set by set bolts 61. By assembling and fixing to the fixed blade support 7, it is the same as the fixed blade 6 in the conventional cylinder type agricultural cutter fixedly mounted to the machine frame 1.

The fixed blade support 7 for mounting the fixed blade 6 has a fixed blade mounting seat 7a for abutting the blade body 6a formed so that one of the left and right sides is raised. 6 by assembling the blade 6a of the fixed blade 6 with the set bolts 61 so that the blade edge 60 of the blade 6a of the fixed blade 6 can be seen in the front-rear direction perpendicular to the axis S 'of the spindle S. Is inclined at an inclination angle α with respect to the axis S ′ of FIG.

[0021]

The embodiment of the present invention operates as follows. A fixed blade 6 having a straight blade shape and a blade edge 60 along a straight line and a blade edge 60 formed on a blade edge thereof is inclined at an inclination angle α with respect to the axis S ′ of the main shaft S. In this state, it is mounted on the fixed blade support 7 fixedly mounted on the machine frame 1. Next, a blade mounting seat 40 for mounting the rotary blade 5 having a blade body 5a formed in a straight plate shape and a blade edge 50 formed in a straight blade shape along a straight line on the outer end side of the blade mounting metal 4 mounted on the main shaft S. , The blade edge 50 abuts in a posture parallel to the axis S ′ of the main shaft S, and in this state, the blade 5a of the rotary blade 5
To the blade mounting seat 40 with set bolts 41.

Thus, the blade body 5a of the rotary blade 5, which is formed of an elastic steel material so as to be able to bend, has a concave portion whose left and right intermediate portions face the main shaft S side when viewed in the front-back direction in the rotation direction of the main shaft S. When it comes into close contact with the seating surface of the blade mounting seat 40 formed on the arcuate surface formed in a hollow shape, it is curved and deformed into a shape following the concave arcuate surface, and the front edge of the blade body 5a is bent. The blade edge 50 has a shape following the concave solitary surface when viewed in the front-rear direction.

The concave arcuate surface formed on the seating surface of the blade mounting seat 40 for causing the blade body 5a of the rotary blade 5 to bend and deform allows the straight blade-shaped fixed blade 6 to extend along the axis S 'of the main shaft S. And the intermediate portion of the blade edge 60 of the fixed blade 6 protrudes in a convex shape with respect to the rotation trajectory of the blade edge 50 of the rotary blade 5 when assembled at a tilt angle α. Because it is set to polymerize inside out,
The blade edge 50 of the rotary blade 5 and the blade edge 6 of the fixed blade 6 fastened here
If the main shaft S is rotated by performing the blade alignment adjustment with 0, the blade edge 50 of the rotary blade 5 maintains a substantially constant interval with the blade edge 60 of the fixed blade 6 in the entire region in the longitudinal direction. And then they start to rub each other.

When wear occurs, if the set bolts 41 are removed and the blade 5a of the rotary blade 5 is removed, the blade 5a is restored to a straight blade shape by elasticity, and can be polished as a straight blade. Become like

Next, FIG. 7 shows another embodiment. In this embodiment, the tip of the rotary blade 5 is formed on a tip 5b separate from the blade 5a, and the tip 5b, which is the tip, is formed on a tip mounting seat 52 for shaping the blade 5a. Set screw 5
3 is an example in which the present invention is applied to a rotary blade 5 configured to be removably assembled by using a tip 5b serving as a blade edge portion.
Is formed in a strip shape that can be bent by a steel material having elasticity, and a tip mounting seat 52 formed on a blade body 5a of the rotary blade 5 so as to assemble the same is provided with a spindle as shown in FIG. When viewed in the front-rear direction of the rotation direction of S, it should be formed in a concave arc-shaped surface similar to the concave arc-shaped surface formed on the main shaft S side formed on the seat surface of the blade mounting seat 40 in the above-described embodiment. Then, the tip 5b, which is a blade tip, is fastened to the blade body 5a of the rotary blade 5 with the set screws 53, and the intermediate portion of the blade edge 50 thereof fixes the fixed blade 6 to the axis S of the main shaft S. The fixed blade 6 is retracted toward the main shaft S in accordance with the overhang of the intermediate portion of the blade edge 60 when the fixed blade 6 is assembled as a state of being inclined at an inclination angle α with respect to '. It is an example.

Therefore, in this embodiment, the blade mounting seat 40 formed on the blade mounting metal 4 can set the blade body 5a of the rotary blade 5 in a state parallel to the axis S 'of the main shaft S. The blade mounting seat 40 may have a seat surface formed in a flat surface that is hollowed out in a concave shape toward the main shaft S when viewed in the front-back direction in the rotation direction of the main shaft S. You can

Also, the blade body 5a of the rotary blade 5 does not need to be formed to be flexible, but may be formed to be rigid.

[0028]

As described above, the cutting mechanism in the cylinder type agricultural cutter according to the present invention is the fixed blade support 7.
The fixed blade 6 to be mounted on the fixed blade 6 is formed in a straight blade shape, and the blade edge 60 of the fixed blade 6 is generated when the blade edge 60 is mounted to be inclined with respect to the axis S ′ of the main shaft S. In order to solve the problem that the intermediate portion in the longitudinal direction of the blade protrudes in an arc shape with respect to the rotation locus of the blade edge 50 of the rotary blade 5 and interferes with the rotary blade 5, The seating surface of the blade mounting seat 40 formed at the end or the seating surface of the tip mounting seat 52 formed on the blade body 5a of the rotary blade 5 has a concave surface on the side of the main shaft S when viewed in the front-rear direction in the rotation direction of the main shaft S. The blade 5a of the rotary blade 5 or the tip 5b, which is the cutting edge of the rotary blade 5, to be assembled therewith is formed into a flat plate that can be bent with a steel material having elasticity. By tightening with set bolts 41 or set screws 53, The blade edge 60 of the fixed blade 6 inclined with respect to the axis S ′ of the main shaft S is bent and deformed so as to follow the concave concave surface described above.
Rotary blade 5
In order to solve the problem, the blade edge 50 of the rotary blade 5 or the tip 5b of the blade body 5a of the rotary blade 5 is drawn.
When the blades are polished, by removing them, the blades can be polished in a straight blade state. In addition, the fixed blade 6 may be formed as a straight blade, and the rotary blade 5 may be formed as a substantially straight blade. Accordingly, a cylinder type cutting mechanism which is easy to manufacture and assemble and can easily perform maintenance can be obtained.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a conventional cylinder type agricultural cutter.

FIG. 2 is a perspective view of a cutting mechanism of the cylinder type agricultural cutter.

FIG. 3 is an explanatory diagram showing the cutting mechanism combined with a side sectional view and a developed view.

FIG. 4 is an explanatory diagram of a cutting mechanism in the cylinder type agricultural cutter according to the present invention, which is combined with a side sectional view and a developed view.

FIG. 5 is a partially broken plan view of a main part of the cutting mechanism.

FIG. 6 is a vertical sectional side view of a main part of the cutting mechanism.

FIG. 7 is a partially broken plan view of a main part of another embodiment of the cutting mechanism.

FIG. 8 is a side sectional view of a fixed blade of the cutting mechanism.

[Explanation of symbols]

A: Agricultural cutter, a: Cutting mechanism, S: Spindle, S ': Shaft core line, α: Angle, β: Distance, 1: Machine frame, 2: Cutting room, 2
0 ... inlet, 21 ... discharge port, 22 ... discharge gutter, 3 ... feed roll case, 30/31 ... feed roll, 32 ... supply gutter, 4
… Cutting blade mounting metal, 4a… Arm-shaped part, 4b… Base plate, 4c…
Boss part, 40: blade mounting seat, 41: set bolt, 42
... insertion holes, 5 ... rotating blades, 5a ... blades, 5b ... tips, 5
0: blade edge, 51: bolt insertion hole, 52: tip mounting seat,
53: set screw, 6: fixed blade, 6a: blade, 60: blade edge, 7: fixed blade support, 7a: fixed blade mounting seat.

Claims (2)

(57) [Scope of request for utility model registration] 1. A machine frame 1 disposed at an entrance 20 of a cutting room 2
The fixed blade 6 formed in the shape of a straight blade is attached to the fixed blade support 7 fixedly mounted on the main shaft S so that its blade edge 60 is inclined at an inclination angle α with respect to the axis S ′ of the main shaft S. A blade mounting seat 40 for assembling the blade body 5a of the rotary blade 5 is provided on the outer surface side of the outer end of the blade mounting metal 4 mounted on the main shaft. The blade mounting seat 40 is formed and mounted so as to form a concave arcuate surface that is molded into the S side.
Then, the rotary blade 5 is formed into a straight blade shape that can be bent by using a steel material having elasticity, and is fastened with set bolts 41. A cutting mechanism for a cylinder-type agricultural cutter that is mounted by bending and deforming to a shape that follows the surface. 2. A machine frame 1 disposed at an entrance 20 of a cutting room 2
The fixed blade 6 formed in the shape of a straight blade is attached to the fixed blade support 7 fixedly mounted on the main shaft S so that its blade edge 60 is inclined at an inclination angle α with respect to the axis S ′ of the main shaft S. The blade body 5a of the rotary blade 5 is mounted on the blade mounting seat 40 at the outer end of the blade mounting metal 4 mounted on the
The tip mounting seat 52 is provided on the outer surface side of the blade edge side of the blade body 5a.
Its seating surface is formed and mounted so as to form a concave arcuate surface that is hollowed out on the main shaft S side when viewed in the front-rear direction in the rotation direction of the main shaft S, and the chip mounting seat 52 is made of a steel material having elasticity. The tip 5b, which is formed in the shape of a straight plate that can be bent along a straight line and abuts against the straight, is fastened with set screws 53, and the tip 5b is bent into a shape following the concave seating surface of the tip mounting seat 52. A cutting mechanism for a cylinder-type agricultural cutter that is mounted after being deformed.