JPS60149319A - Straw cutting rotary blade - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] This relates to rotary blades.

Generally, harvested rice straw is cut into short pieces and used for various purposes such as compost and straw beds in livestock sheds. As one method of utilizing this, the use of straw beds as cultivation beds for pine mushrooms has become popular in recent years. In order to make this straw bed, bundles of straw collected from rice farmers are cut into lengths of about 25α using a cutting machine, and then laid with a certain thickness and width.

As conventional cutting machines, manual cutting machines using a push-cut cutter and electric cutting machines that combine a screw rotary blade and a fixed blade are often used. Since the straw is difficult to cut with any cutting machine, the current method is to bundle the straw into pieces that can be grasped by hand and cut them into small pieces.In the past, efficient electric cutting machines were used. However, since the cutting is performed by the force cutting action of a combination of a rotating blade and a fixed blade, even if the cutting machine is made larger, the straw itself is difficult to cut, so there is a limit to the cutting ability, and a large amount of straw can be cut in a short time. I couldn't process it. For example, to make a cultivation bed for pine mushrooms, two bundles of straw tied together to a diameter of about 60 mm are used.
There are 8 strands to cut approximately 1,000 bundles, but even with the conventional electric type, the cutting process took three days and was extremely inefficient.

The present invention is based on various studies conducted in view of the above points, and an object of the present invention is to provide a straw cutting rotary blade that can cut a large amount of straw bundles into short pieces in a short period of time.

Embodiments of the present invention will be described in detail below with reference to the drawings.

1 and 2 show an embodiment of the present invention,
This straw cutting rotary blade l has 3 parts on the periphery of the circular blade main body part 2.
Twelve V-grooves 3 are formed at intervals of 0", and a tapered part 4 is formed on one side of the tip of the periphery to form a cutting edge part 5.Furthermore, a blade main part 2 is formed. A shaft hole 6 is formed in the center of the shaft, and four screw holes 7 are formed around this hole.
... is drilled. The outer diameter of the blade body 2 is approximately 5
8cm, the depth of groove 3 is approximately 3Cm, and the opening angle is 1l-
It is 190°. The length of the Ushida blade edge portion 5 is approximately 3 m on the tip side.
A taper portion 4 of about 30'' is formed over m, and approximately 106 taper portions 4 are formed in two stages inside the tapered portion 4.

The configuration of a cutting machine incorporating this straw cutting rotary blade 1 is shown in FIGS. 3 and 4. 8 is a frame, this frame 8
Wheels 9 are attached to the bottom of the differential IO
It is connected to a motor 17 via a motor 17, so that it can run on its own.

Reference numeral 11 denotes a belt conveyor for carrying in which is inclined by 1 on the front side of the frame 8, and numeral 12 is a belt conveyor for carrying out which is similarly inclined at the rear side of the frame 8. Not connected to the motor. Between the two belt conveyors 11 and 12, there are rotary blades for cutting straw in two stages, upper and lower.
... is installed. As shown in Fig. 4, these straw cutting rotary blades l are attached to a rotary shaft 13.13 horizontally arranged in two lower rows, four of them at a pitch of 25°, a total of eight blades, and the cutting edge portion is 5.5 mm. A pair of upper and lower parts are mounted facing each other with the tapered portions 4.4 facing outward, with an interval of about 5 mm.

Both ends of the rotating shaft 13 are connected to a receiving shaft 14 attached to the frame 8, and further protrude in opposite directions.
15 is attached and connected to the motor 17 by a belt lI6.

In the figure, 18 is a belt, and 19 is a non-slip protrusion formed on the surface of the belt 18.

Next, the operation of the straw cutting machine having the above structure will be explained.

First, the belt conveyor 1112 for carrying in and carrying out is rotated, and the rotary straw cutting blades 1 in two stages, upper and lower, mounted on the same axis by the motor 17 are rotated in the direction of the arrow shown in FIG. In this case, the upper straw cutting rotary blade l
... is rotated at a low speed of about 100 revolutions per minute to serve as a cutting blade, and the lower straw cutting rotary blade l... is rotated at a high speed of about 600 revolutions per minute to serve as a feeding blade.

In this state, 2 bundles of straw were tied into a bundle with a diameter of 60 to 80 cm.
0... is continuously supplied from the tip of the carrying belt conveyor 11, the straw bundles 20... are conveyed upward to lllR, and as shown in FIG. Cutting rotary blade 1. It is put in between l. As shown in Fig. 6, the introduced straw bundle 20 is sequentially bitten between the rotary blades by the plate 3 of the lower straw cutting rotary blade l rotating at high speed, and becomes a cutting blade. The straw 21 is instantaneously cut at high speed by the cutting blade and the lower straw cutting rotary blade l serving as a receiving blade, and the straw cut into short pieces is carried out by a belt conveyor 12 for carrying out.

Rotate the ifc motor 17 and set the differential lO
By rotating the wheel 9 through the cutting machine, the cutting machine is made to run on its own, and if the cutting machine is operated while supplying the straw bundle 2o, the straw 2o cut into short pieces is automatically laid with a constant thickness and width. , a strip-shaped straw bed is created.

In the above operating method, the two-stage straw-cutting rotary blade l is rotated at low speed to perform Kangoo cuts as shown by the arrow, and the lower-stage straw-cutting rotary blade l is rotated at high speed to cut the wrinkled bundle 2o between the rotary blades. Is it a circle due to the straw cutting rotary blade l on the upper feed stage? i
It is cut at f. In this case, a protrusion 19 is formed on the belt conveyor l for carrying in, and the straw bundle 20 is conveyed in a state that bites into the straw bundle 2°, so that in the state shown in FIG. The straw bundle 20 bites into the groove 3 and is pulled in the direction of the rotating blades, cutting between the rotating blades and cutting smoothly, and according to an actual machine test, 6 bundles are cut in 10 seconds. I was able to do that.

Claims (1)

[Claims] A plurality of V grooves are formed at predetermined intervals on the circumference of a circular blade body, and a tapered portion is formed on one side of the blade body and the tip of the circumference of the V groove to form a blade tip. Straw cutting rotary blade.