JPH0730299Y2 - Disc type cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a disc-type cutter that is held on a high and low speed rotating shaft by a partition pipe structure having an improved disc blade.

[Prior Art] A partition pipe used in a generally known disc type cutter has a structure as shown in FIG. That is, a polygonal, for example, hexagonal, high and low speed rotary shaft 1 is provided with a disc blade 2 having a hexagonal hole that matches the cross-sectional shape of the rotary shaft 1, and a cross-sectional shape of the rotary shaft 1 at the boss portion 3a. And a partition pipe 3 of a synthetic resin type having a hexagonal hole conforming thereto are alternately inserted, and the disc blade 2 can be exchanged with respect to the rotary shaft 1 at appropriate intervals.

[Problems to be solved by the invention] In the partition pipe structure of the disc blade as described above,
Since the length of the high and low speed rotating shafts is relatively long (about 1 m), the rotating shaft bends during disk blade replacement work, so thin disk blades are not a problem, but relatively long partition pipes. The boss part is not inserted smoothly, and it takes a lot of time and labor to replace the disc blade, and the mold for the synthetic resin mold is expensive and requires a lot of materials to be used, which is economical. There are challenges.

The object of the present invention is to eliminate the economical disadvantage by forming the partition pipe as a simple pipe without a boss, and to provide locking means on both end edges of the partition pipe and the disc blade portions corresponding to the end edges. The partition pipe is positioned and set concentrically with the rotary shaft by both of these locking means, and in addition, the spacing between the disk blades is kept reasonably, and the partition pipe can be set smoothly regardless of the flexure of the rotary shaft. The purpose of the present invention is to provide a disc type cutter capable of exchanging various disc blades.

[Means for Solving the Problems] In the configuration of the present invention for solving the problems of the conventional technology, a high-speed rotating shaft and a low-speed rotating shaft are mounted parallel to a frame, and a partition pipe is attached to the high-speed rotating shaft. A disk type in which a plurality of disc blades are replaceably provided at appropriate intervals through the disc, and disc blades such as star wheel blades corresponding to the disc blades are exchangeably provided on the low-speed rotation shaft through a partition pipe. In the cutter, engaging means that can be engaged and disengaged is provided on both end edges of each of the partition pipes and the disk blade portion corresponding to the end edges.

[Operation] The required number of disc blades and partition pipes are alternately inserted into the high and low speed rotating shafts, and the disc blades and the partition pipes are sequentially locked by the locking means formed on both ends of the disc blades to make the disc blades suitable. Since the interval can be set and the partition pipe is not in contact with the rotary shaft, the disc blade replacement work can be performed smoothly and in a short time.

[Embodiment] Next, details of an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a partially cutaway plan view, FIG. 2 is an exploded perspective view of an essential part of the first embodiment, FIG. 3 is a front view of a disc blade in the same embodiment, and FIG. 4 is another embodiment of the disc blade. FIG. 5 is a perspective view of a partition pipe that can be used with the disc blade of FIG.
6 is a perspective view of a partition pipe of another embodiment of the same as above, FIG. 7 is a sectional view of a main part showing the second embodiment, FIG. 8 is a front view of the same disc blade, FIG. 9 and FIG. The figure shows a third embodiment,
FIG. 9 is a partially cutaway exploded view of the structure in which the locking means is a circular ridge concentric with the rotating shaft, and FIG. 10 is a partially cutaway exploded view of the structure in which the protruding locking means is spot-shaped. .

Referring to FIG. 1, the disk cutter of the present invention will be described in detail. Reference numeral 11 is a frame body provided opposite to each other on the left and right sides, and both frame bodies 11 form a part of a disk cutter case (not shown). A high-speed rotating shaft 12 and a low-speed rotating shaft 13 having a hexagonal cross-section, for example, are laid between the two frame bodies 11 in parallel and on the same plane. A plurality of disc blades 14, a star wheel blade 15 and a plurality of partition pipes 16 and 17 having a simple pipe structure which is a synthetic resin molded product are alternately inserted through the high and low speed rotating shafts 12 and 13, and in particular, Partition pipe for low-speed rotating shaft 13
A brim 17a is integrally formed with the star wheel blade 15 so as to face the star wheel blade 15 with an appropriate gap. The outer periphery of the disc blade 14 of the high-speed rotating shaft 12 is slightly inserted in the approximate center of the gap. In addition, the above high and low speed rotary shaft 1
Screw portions 12a, 13a are formed at one end of 2, 13, and the blade holders 20, 21 are pressed by nuts 18, 19 screwed into the screw portions 12, a disk blade 14, a star wheel blade 15, and each partition pipe 16, 17 and 17 are configured to be set. 22 and 23 are blade pressers fixed to one end of the high and low speed rotating shafts 12 and 13, 24 and 25 are straw winding prevention pipes, and 26 and 27 are straw windings detachably attached to one frame body 11. With the prevention pipe, it is possible to unscrew the nuts 18 and 19 by removing the straw winding prevention pipes 26 and 27 from the frame body 11, the disc blade 14, the star wheel blade 15, and
The partition pipes 16 and 17 can be removed and replaced from the high and low speed rotating shafts 12 and 13. In the figure, 28 is a large diameter gear, 29
Is a small diameter gear, and 30 is a pulley for power transmission.

Next, details of the first embodiment of the present invention will be described with reference to FIGS. On the plate surface of the disk blade 14 inserted into the high-speed rotation shaft 12, concentric with the disk blade 14, and forming even number of holes 14a constituting the locking means at equal intervals, and Locking to be fitted into every other hole 4a of the disc blade 14 on both end faces of one partition pipe 16 which is abutted on both sides of the disc blade 14 and arranged concentrically with the axis of the high-speed rotating shaft 12. The projection 16a which is a means is integrally formed, and the other partition pipe 1
Protrusions 16b that fit into the remaining holes 4a formed in the disc blade 14 are integrally formed on both end faces of 6. Then, the partition pipes 16 are abutted from both sides of the disk blade 14 inserted into the high-speed rotation shaft 12, and the projections 16a and 16b of the partition pipes 16 are fitted into the respective promised holes 14a of the disk blade 14. Thus, the space between the disc blades 14 is held by the partition pipe 16, and the partition pipe 16 is set concentrically with the axis of the high-speed rotating shaft 12. This also applies to the star wheel blade 15 and the partition pipe 17 for the low speed rotation shaft 13.

Further, as shown in FIG. 3, when the hole 14a of the disc blade 14 is circular, the projection 16a of the partition pipe 16 is
16b may not be compatible with each other. To prevent this, as shown in FIG. 4, by making the hole 14a an elliptical hole 14b along the circumference, the above manufacturing error can be eliminated. To do. Further, as shown in FIG. 5, the projections 16a and 16b of the partition pipe 16 are projections 16c having a width to be fitted into the elliptical holes 14b shown in FIG. 4, whereby the projection strength can be increased. . In addition, since the thickness of the disc blade 14 is about 1.6 mm in general, the disc blade 14
The length of the projections 16a, 16b, 16c fitted into the holes 14a, 14b of
It should be about 1.6 mm. Therefore, the protrusions 16a, 16b, 1
Since the 6c is easily damaged or worn, as shown in FIG. 6, the length of each of the protrusions 16a, 16b, 16c is increased and the disc blade 1
A recess 16d for receiving the protrusions 16a, 16b, 16c protruding from the opposite side of 4 is formed between the central end edges of the protrusions 16a, 16b, 16c of the partition pipe 16 so as to increase the protrusion strength. Is.

Next, the details of the second embodiment will be described with reference to FIGS. 7 and 8. In this embodiment, a plurality of elongated slots 14c that are long in the radial direction are formed on the concentric circles of the disk blade 14 at equal intervals. Then, a protrusion 16e that fits into the outer half of this elongated hole 14c is formed at one end of the partition pipe 16, while the other end of the partition pipe 16 is provided with approximately half of the inner side of the elongated hole 14c. Protrusion 16f to fit
Are formed so that the projections 16e and 16f of the partition pipes 16 facing each other are fitted into the elongated holes 14c.

Next, the details of the third embodiment will be described with reference to FIGS. 9 and 10. In the embodiment of FIG. 9, a circular concavo-convex ridge 14d concentric with the disk blade 14 is formed on the plate surface of the disk blade 14, while A concave strip 1 into which the convex portion of the circular concave-convex strip 14d is fitted at one end of the partition pipe 16.
6g is formed on the other end of the partition pipe 16 to form a ridge 16h which is fitted in the recess of the circular ridge 14d.
Further, in the embodiment of FIG. 10, on the plate surface of the disc blade 14, a plurality of spot-shaped concavo-convex portions 14e are formed concentrically with the disc blade 14, while the concavo-convex pattern is formed on one end circle of the partition pipe 16. A concave portion 16i into which the convex portion of the portion 14e is fitted and a convex portion 16i into which the concave portion of the concave and convex portion 14e is fitted are provided on the other end edge of the partition pipe 16.

[Effect of the Invention] According to the configuration of the present invention as described above, the following effects can be obtained.

(A) Since the partition pipe does not have the boss portion into which the high and low speed rotary shafts are fitted as in the conventional case and has a simple pipe structure, the partition pipe can be smoothly set regardless of the bending of the long rotary shaft. The disk blade and star wheel blade can be replaced efficiently.

(B) Since the disc blade and the corresponding locking means are provided at both end edges of the partition pipe corresponding thereto, it is easy to set on the concentric circle of the partition pipe with respect to the axis of the rotating shaft, and It is possible to easily secure the space between the star wheel blades.

(C) Since the partition pipe does not have a boss portion, economical effects such as material saving and simplification of molding die are great.

[Brief description of drawings]

FIG. 1 is a partially cutaway plan view, FIG. 2 is an exploded perspective view of an essential part of the first embodiment, FIG. 3 is a front view of a disc blade in the same embodiment, and FIG. 4 is another embodiment of the disc blade. FIG. 5 is a perspective view of a partition pipe that can be used with the disc blade of FIG.
6 is a perspective view of a partition pipe of another embodiment of the same as above, FIG. 7 is a sectional view of a main part showing the second embodiment, FIG. 8 is a front view of the same disc blade, FIG. 9 and FIG. The figure shows a third embodiment,
FIG. 9 is a partially cutaway exploded view of the structure in which the locking means is a circular ridge that is concentric with the rotary shaft, and FIG. 10 is a partially cutaway exploded view of the structure in which the projecting locking means is spot-shaped. The figure is a partially cutaway front view of a conventional example. 11 ... Frame, 12 ... High-speed rotating shaft, 13 ... Low-speed rotating shaft, 14 ... Disc blade,
14a to 14e ... Locking means, 15 ... Star wheel blades, 16, 17 ... Partition pipes, 16a to 16i ... Locking means.

Claims (1)

[Scope of utility model registration request] 1. A high-speed rotating shaft and a low-speed rotating shaft are mounted on a frame in parallel with each other, and a plurality of disc blades are replaceably provided on the high-speed rotating shaft through partition pipes at appropriate intervals. In the disc type cutter in which the disc blades such as star wheel blades corresponding to the disc blades are exchangeably provided on the low-speed rotating shaft through the partition pipes, the both end edges of the partition pipes and the end edges A disc-type cutter characterized in that the disc blade corresponding to the above is provided with engaging means that can be engaged and disengaged.