JPH0516919Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement in a fixed blade attachment device for a straw cutter that cuts straw and feed crops into fine pieces.

The above-mentioned fixed blade attachment device for the straw cutter usually mounts the fixed blade holder 2 on the edge of the entrance 10 of the cutting chamber 1 mounted on the machine frame a, as shown in Fig. 1. The fixed blade holder 2 is fixedly installed on the frame a, and a second
As shown in the figure, the fixed blade 3 made of ceramic is brought into contact with the set bolt 4 as shown in Figure 3.
By tightening and fixing it to the fixed blade holder 2 with a tightening nut 40, it is configured to be attached to the machine frame a, and thereby, as shown in FIG.
The fixed blade 3 is adapted to correspond to a rotary blade 51 mounted via a blade mount 50 on a rotating shaft 5 which is mounted on the machine frame a by penetrating the axial center of the blade.

By the way, in the mounting means for the fixed blade 3 constructed in this way, the object to be cut is supplied into the cutting chamber 1 from the entrance 10 of the cutting chamber 1, and the workpiece is fed into the cutting chamber 1 by driving the rotary shaft 5. When performing cutting work using the rotating rotating blade 51 and the fixed blade 3 fixedly attached to the machine frame AI, the installation of the fixed blade with the set bolt 4 may become loose due to impact during the work, or the bolt hole may become loose. There is a problem in that the fixed blade 3 comes off from the fixed blade holder 2 and flies out from the entrance 10 of the cutting chamber 1 due to a cut or the like, which may hit a worker and cause an accident.

The present invention has been made to solve this problem, and is designed to prevent the rotating blade 51 from colliding with the object to be cut supported by the fixed blade 3 during cutting. To securely hold a fixed blade 3, which comes off from a fixed blade holder 2 and jumps out of a cutting chamber 1 due to an impact, to the fixed blade holder 2 without causing any hindrance to the cutting action. The purpose is to provide new means to do so.

In the present invention, as a means to achieve this objective, a notch is formed on the upper edge side of the fixed blade holder, which is arranged at the mouth edge of the entrance of the cutting chamber and fixed to the machine frame. At the same time, on the upper half of the outer surface of the fixed blade holder opposite to the cutting chamber, an assembly seat in the form of a fitting recess that is wedge-shaped in side cross section is formed so as to be continuous with the notch, A fixed blade made of ceramic is provided with a mounting portion having a cross-sectional shape corresponding to the assembly seat on the lower half side and a blade portion that fits into the notch portion on the upper half side. This invention proposes a fixing device for a fixed blade in a straw cutter, which abuts against the outer surface of a holder, a fixed blade presser plate contacts from the outer surface, and is tightened to the fixed blade holder with a tightening bolt. .

Next, embodiments will be described in detail with reference to the drawings. It should be noted that the same reference numerals in the drawings as in the previous means are used for constituent members having the same effect.

FIG. 4 is a longitudinal side view of a cylinder-type straw cutter A in which the present invention can be carried out. A fixed blade holder is arranged at the edge of the mouth and fixedly supported on the machine frame a, 3 is a fixed blade, and 6 is a fixed blade holding plate.

The cutting chamber 1 is formed on a drum, mounted on the machine frame a with its axis oriented in the left-right direction, and is mounted on the front side of its peripheral wall (the right side in Fig. 3). An inlet 10 is provided at the side, and an outlet 11 is provided at the rear side. and,
On the entire surface side of the entrance 10 of the cutting chamber 1, there is installed a feed roll chamber 1a formed in the shape of a gate or a slot frame when viewed from the front, and a pair of feed rolls 12 are placed in the chamber so as to face each other vertically. , 13 are pivotally supported, and a supply tub 14 is connected to the front side of the feed roll chamber 1a, and a discharge tub 15 is connected to the discharge port 11 on the rear side of the cutting chamber 1. . A rotary shaft 5 is horizontally supported in the cutting chamber 1 so as to pass through the axial center of the cutting chamber 1 from side to side, and a blade mount 50 attached to the rotary shaft 5 is attached to the rotary shaft 5. A rotary blade 51 is attached, and one shaft end side of the rotary shaft 5 is transmitted to and driven by a prime mover shaft (not shown).
The rotary blade 51 is designed to rotate clockwise in FIG. 4. The feed rolls 12 and 13 are in communication with the rotating shaft 5, and at this time, are driven to rotate in the directions of arrows in FIG. 4, respectively.

The fixed blade holder 2 is formed into a thick flat plate with a length corresponding to the left and right width of the machine frame a, and is placed along the lower edge of the entrance 10 of the cutting chamber 1. It is arranged so as to cross the machine frame a from side to side, and its left and right ends are integrally connected to the machine frame a, so that it becomes a constituent member of the machine frame a. and,
As shown in FIG. 5, at the upper end of the fixed blade holder 2, there is a notch 20 that is long in the left and right directions, leaving both left and right ends in a sleeve shape, and is rotatable in the cutting chamber 1 described above. The length is formed to approximately correspond to the length of the blade portion of the rotary blade 51. In addition, the feeding roll chamber 1a of the fixed blade holder 2
As shown in FIG. 6, an assembly seat 21 for assembling and fixing the fixed blade 3 in contact with the upper half of the outer surface facing the fixed blade holder 2 is provided on the outer surface side of the fixed blade holder 2. It is formed in the shape of a fitting recess that is recessed (on the feeding roll chamber 1a side) toward the inner surface side (on the cutting chamber 1 side). The assembly seat 21 has a wedge-shaped side cross section whose left and right widths correspond to the left and right widths of the above-mentioned notch 20, and whose recessed depth d toward the inner surface gradually becomes deeper downward. Further, screw holes 22, into which set bolts 4 for closing the fixed blades 3 in contact with each other are screwed, are arranged in series in the left-right direction. And this assembly seat 21
Bolt holes 23 for tightening bolts 7 for fastening the fixed blade holding plate 6 are provided at both left and right ends of the fixed blade holder 2 on the outside in the left and right direction.

The fixed blade 3 is made of ceramic and is shaped like an elongated strip on the left and right sides with a length corresponding to the notch 20 of the fixed blade holder 2 and the width of the assembly seat 21 on the left and right sides. As shown in FIG. 7, the half side is provided with a mounting portion 30 having a wedge-shaped side cross section that fits into the assembly seat 21, and the upper half side is provided with a mounting portion 30 that fits into the assembly seat 21. When fitted together, the blade portion 3 fits into and fills the notch 20 provided in the fixed blade holder 2 as shown in FIGS. 8 and 9.
1 is installed. Further, the mounting portion 30 is provided with bolt insertion holes 33 for inserting the setscrews 32 at positions corresponding to the aforementioned screw holes 22. The set screw 32 for assembling the fixed blade 3 may be omitted in some cases. In that case, the screw holes 22 provided in the fixed blade holder 2 and the bolt insertion holes 33 provided in the fixed blade 3 may be omitted.

The fixed blade holding plate 6 is made of cast metal or a thick steel plate and is formed into a flat plate shape corresponding to the left and right width and height of the outer surface side of the fixed blade holder 2, and has grooves at both left and right ends. , when the fixed blade holder 2 is in contact with the outer surface thereof, a screw hole 60 is provided in a position corresponding to the bolt hole 23 provided in the fixed blade holder 2 to be screwed into the tightening bolt 7. , this makes the ninth
As shown in the figure, the mounting part 30 of the fixed blade 3 is fixed by contacting the outer surface of the fixed blade holder 2 assembled with the fixed blade 3 and tightening the fixed blade holder 2 with the tightening bolt 7. The blade is confined in a mounting seat 21 formed between the blade holder 2 and the fixed blade holding plate 6, which has a wedge-shaped side cross section. Lower infeed roll chamber 13 of 13
A guide plate 8 extending toward the circumferential surface is integrally and continuously formed.

That is, the fixed blade holding plate 6, which presses down the attachment part 30 of the fixed blade 3 so as to confine it, is connected to the entrance 1 of the cutting chamber 1 from between the facing feed rolls 12 and 13 of the upper plate.
Feed rolls 12 and 13 and a fixed blade 3 are used to guide the material to be cut, which is fed toward the cutting chamber 1, into the cutting chamber 1.
The guide plate 8 disposed between the guide plate 8 and the guide plate 8 also serves as a mounting member for assembling and inserting the guide plate 8 into the machine frame a. The guide plate 8, which protrudes outward from the upper edge of the fixed blade presser plate 6 in the shape of a shelf, has a protruding end edge 8a that is connected to the feed roll 1 below.
It is located very close to the outer circumferential surface of No. 3 and also serves as a scraper.

The embodiment device constructed in this manner operates as follows.

With the rotary shaft 5 being driven to rotate the rotary blade 51 and the upper and lower feed rolls 12 and 13 being driven to rotate in the direction of the arrow in FIG.
When the material to be cut is fed from the supply gutter 14, it is caught between the feeding rolls 12 and 13 facing each other and forced into the cutting chamber 1 through the entrance 10 of the cutting chamber 1. The rotating rotary blade 51 works with the fixed blade 3 to transfer it to the feed rolls 12 and 1.
3 and the rotational speed of the rotary blade 51.

At this time, the fixed blade 3 assembled to the fixed blade holder 2 supports the rotary blade 51 on the blade edge 31a of the blade portion 31 of the fixed blade 3, where the material to be cut is supported.
As the blades collide with each other, they are constantly subjected to large shocks, and the impact causes loosening of the assembly to the fixed blade holder 2. By being confined within the assembly seat 21, which has a wedge-shaped side cross section and is formed between the fixed blade retainer plate 6, it is prevented from moving in either the vertical direction or the front-back direction. , it becomes firmly held in the assembled state.

The fixed blade holding plate 6 that presses down the fixed blade 3 and the fixed blade holder 2 holds the mounting portion 30 of the fixed blade 3 in contact with the assembly seat 21 formed on the outer surface of the fixed blade holder 2. , the fixed blade holder 2 is held down from the outside surface side and does not protrude into the cutting chamber 1 at all, so the rotation of the rotary blade 51 rotating in the cutting chamber 1 and its cutting are prevented. It does not cause any trouble to the operation.

Furthermore, the fixed blade 3 held between the fixed blade holder 2 and the fixed blade presser plate 6 has its mounting portion 30 located on the outer side of the fixed blade holder 2, but the rotary blade The blade part 31 that slides against the blade part 51 is positioned so as to fill the notch part 20 formed at the upper end part of the fixed blade holder 2, and the cutting chamber 1
Since it is curved to the side and exposed, it does not cause any trouble in sliding with the rotary blade 51.

Further, a guide plate 8, which is integrally formed on the upper edge of the fixed blade presser plate 6, guides the material to be cut, which is sent out from between the opposing feed rolls 12 and 13, on the upper surface of the blade edge 31a of the fixed blade 3. It will guide you accurately.

Although the embodiments have been described only with respect to a cylinder-type straw cutter, the fixed blade attachment device according to the present invention can also be applied to a foil-type straw cutter.

As explained above, the fixed blade attachment device of the straw cutter according to the present invention is installed at the entrance 10 of the cutting chamber 1.
A notch 20 is formed on the upper edge side of the fixed blade holder 2 which is fixed to the machine frame a by being arranged at the mouth edge of the machine frame a.
On the upper half of the outer surface of the fixed blade holder 2 on the side opposite to the cutting chamber 1, an assembly seat 21 in the form of a fitting recess, which is wedge-shaped in side section, is formed so as to be continuous with the notch 20. A fixing member made of ceramic is provided with a mounting portion 30 having a cross-sectional shape corresponding to the assembly seat 21 on the lower half side, and a blade portion 31 that fits into the notch portion 20 on the upper half side. The blade 3 is in contact with the outer surface of the fixed blade holder 2, a fixed blade retaining plate 6 is abutted from the outer surface of the blade 3, and the blade 3 is fastened to the fixed blade holder 2 with a tightening bolt 7. Therefore, the fixed blade 3 can be reliably fixed so that it will not come off the fixed blade holder 2 due to the impact received during the cutting operation, without causing any hindrance to the cutting action performed jointly with the rotary blade 51. Since the fixed blade 3 is held in the fixed blade holder 2, danger caused by the fixed blade 3 flying out can be prevented.

Furthermore, when the guide plate 8 is integrally formed with the fixed blade holding plate 6 that presses the fixed blade 3 onto the fixed blade holder 2, the guide plate 8 is attached at the same time as the fixed blade 3 is fixed. and the guide plate 8
To properly guide the material to be cut toward the upper surface of the blade edge 31a of the fixed blade 3.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of the conventional straw cutter, Figure 2 is a vertical sectional side view of the fixed blade of the same as above, Figure 3 is a vertical sectional side view of the attachment means for the fixed blade of the same as above, and Figure 4 is the implementation of the present invention. Fig. 5 is a partially omitted front view of the fixed blade holder shown above, Fig. 6 is a longitudinal sectional side view of the fixed blade holder shown above, and Fig. 7 is a longitudinal sectional view of the fixed blade holder shown above. A side view, FIG. 8 is a front view of the fixed blade holder with the fixed blade set, and FIG. 9 is a longitudinal sectional side view of the fixed blade holder with the fixed blade set. Explanation of drawing symbols, A... Straw cutter, a... Machine frame, d... Hollowing depth, 1... Cutting room, 1a...
...Feed roll chamber, 10...Inlet, 11...Discharge port, 12, 13...Feed roll, 14...Supply gutter, 15...Discharge gutter, 2...Fixed blade holder, 20...
...Notch, 21... Assembly seat, 22... Screw hole, 2
3... Bolt hole, 3... Fixed blade, 30... Mounting part, 31... Blade part, 31a... Blade edge, 32... Set screw, 33... Bolt insertion hole, 4... Set bolt, 40... ... Tightening nut, 5 ... Rotating shaft, 50
...Blade mounting bracket, 51 ... Rotating blade, 6 ... Fixed blade holding plate, 60 ... Screw hole, 7 ... Tightening bolt, 8
...Guidance plate, 8a...Protruding edge.

Claims (1)

[Claims for Utility Model Registration] A notch 20 is formed on the upper edge side of a fixed blade holder 2 that is arranged at the mouth edge of the entrance 10 of the cutting chamber 1 and fixed to the machine frame a, and On the upper half of the outer surface of the blade holder 2 on the side opposite to the cutting chamber 1, there is an assembly seat 2 in the form of a fitting recess that is wedge-shaped in side section.
1 is formed so as to be continuous with the notch 20, and the mounting portion 30 has a cross-sectional shape corresponding to the assembly seat 21.
A fixed blade 3 made of ceramic is formed into a shape having a blade part 31 on the lower half side and a blade part 31 that fits in the notch part 20 on the upper half side, and abuts on the outer surface side of the fixed blade holder 2. , a fixed blade mounting device for a straw cutter, in which a fixed blade holding plate 6 is brought into contact with the outside surface of the straw cutter, and the fixed blade holding plate 6 is fastened to the fixed blade holder 2 with a tightening bolt 7. A feed roll 13 is placed on the upper edge of the fixed blade presser plate 6.
2. The fixed blade attachment device for a straw cutter according to claim 1, further comprising a guide plate 8 which projects toward the outer peripheral surface of the straw cutter and is integrally or integrally continuous with the guide plate 8.