JP2009011986A - Uniaxial volume reducing cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent clogging of a raw material near a fixed tooth of a sending direction terminal part. <P>SOLUTION: In a uniaxial volume reducing cutter, a rotary shaft 1, on an outer periphery of which a spiral rotary blade 10 is provided, is inserted in a casing 2 and the raw material charged at a starting end side in the casing 2 is transported to a terminal side while being cut and reducing its volume. A stationary fixed tooth 20 is provided at an inner periphery of the casing 2 closer to the terminal side than the rotary blade 10, a rotary tooth 30 facing the terminal side of the fixed tooth 20 is provided at an outer periphery of the rotary shaft 1 and the raw material transported to the terminal side is cut by the fixed tooth 20 and the rotary tooth 30. A guiding part 22, which inclines so as to gradually approach the terminal side when going from an outside diameter side to an inside diameter side, is provided at an edge 21 of the starting end side of the fixed tooth 20. Since the raw material to be transported to the terminal side is guided to the inside diameter side along a slope of the guiding part 22, cutting by the fixed tooth 20 and the rotary tooth 30 is surely performed at a part nearer the inside diameter where stronger shearing force works and thereby clogging of the raw material can be prevented. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a uniaxial volume reduction cutter that reduces and cuts aquatic plants that grow in lakes and rivers, cut grasses on land, small-sized trees that have been pruned and cut, and other various raw materials.

For harvesting and collecting aquatic plants that grow on lakes and rivers, for example, when harvesting aquatic plants from the shore or on a ship and pulling the harvested plants up to land, or collecting them with a pump equipped with aquatic cutters. In some cases, the water and aquatic plants are separated and collected on land.
In addition, a large amount of cut grass generated by weeding work near the riverbank, small trees that have been pruned and harvested in urban street trees and forests in the mountains, etc. are cut and then dried in the sun. It may be collected later.

  The harvested aquatic plants and cut grasses are generally bulkier than their weight, so they can be reduced in volume before being transported from the site to various processing facilities such as incineration facilities, or before processing at the processing facilities. Cutting processing is performed.

  For example, in Patent Document 1, two screw shafts provided with a spiral rotating blade that rotates integrally with the rotating shaft on the outer periphery of the rotating shaft are provided in parallel, and the rotating teeth are opposed to the rotating teeth on the end side in the feed direction. A technique in which a stationary stationary tooth is provided is disclosed.

Both screw shafts are rotated around the shaft by a driving force of a motor or the like, and as shown in FIG. 9, the raw material charged from the loading portion 3 provided at the starting end of the apparatus is rotated between the rotating blades 10 rotating together with the screw shafts. It is rolled in between and is transferred toward the end side while being gradually finely cut.
The raw material transferred to the end side is sandwiched between the stationary end portion fixing tooth 20 and the rotating rotary tooth 30 and further cut into fine pieces, and discharged to the outside from the discharge portion 4 provided at the end portion. .

  Further, in the volume reduction cutting machine of Patent Document 1, the helical pitch of the rotating blade 10 (the distance traveled in the axial direction when the spiral makes one round around the axis) is gradually narrowed toward the terminal end fixed teeth 20. Since it is set, the material to be cut (hereinafter referred to as “raw material”) is transferred to the terminal side, gradually increases the degree of compression, and is reduced by the compression.

Patent Document 2 discloses a technique in which the rotary blade 10 on the feed direction start end side of each of the two screw shafts is intermittent along the spiral (see FIG. 10).
In this way, the rotating blade 10 is made intermittent because the raw material is not yet finely cut on the starting end side close to the feeding portion 3, and the circumferential end of the intermittent teeth is more than the effect of compression and transfer on the terminal end side. This is considered to be because the shearing force and stirring force by the edge are expected to be relatively large.

JP 2006-712 A JP 2001-121118 A

  In the volume reduction cutting machine shown in FIG. 9, there is a problem that the raw material is likely to be clogged in the vicinity of the end portion fixing tooth 20 at the end portion in the feed direction.

  In particular, raw materials such as aquatic plants, cut grass, pruned trees, and small-sized trees that have been cut are wound between the rotating teeth 30 and the terminal fixed teeth 20 because their stems and branches have an elongated shape. May be bitten. For this reason, it tends to clog more easily than other general raw materials. Moreover, since soft things, such as aquatic grass and cut grass, bend according to the shape of a tooth, it can be said that the tendency is further strong.

When clogging of raw materials occurs, the operation of the apparatus must be stopped in order to remove the clogging, and smooth cutting and volume reduction work are hindered. Moreover, since the operation for removing the clogging requires disassembly and reassembly of the machine, it is often complicated and requires a long time.
Further, in order to prevent clogging in the vicinity of the terminal end fixed tooth 20, a large amount of raw material cannot be introduced in the vicinity of the terminal end fixed tooth 20 in a short time. For this reason, it is necessary to suppress the rotation of the screw shaft at a low speed, and a large processing capacity cannot be ensured.

  Therefore, an object of the present invention is to prevent clogging of raw materials in the vicinity of the fixed tooth at the end portion in the feed direction.

  In order to solve the above-described problems, the present invention provides, as a first means, from the outer diameter side to the inner diameter side on the edge of the starting end side of the terminal end fixed tooth provided at the terminal end in the feed direction of the casing of the volume reduction cutter. An inclined surface that gradually approaches the terminal end as it goes toward the terminal is provided, and the rotating tooth that faces the terminal end fixed tooth is arranged on the terminal end side of the fixed tooth.

Normally, the raw material put into the volume reduction cutter tends to be biased to the outer diameter side due to centrifugal force, but by providing an inclined surface on the terminal portion fixing tooth, the raw material is transferred to the terminal side, It is guided to the inner diameter side along the inclined surface.
For this reason, the cutting by the terminal fixed teeth and the rotating teeth on the terminal side is performed at the portion closer to the inner diameter where the shearing force is stronger, and the cutting is performed more reliably (FIG. 6A). ) (B)). For this reason, it can prevent that the raw material cut | disconnected incompletely becomes clogged between a termination | terminus part fixed tooth and a rotation tooth.

  Further, as a second means, the rotating blade of the rotating shaft inserted into the casing of the volume reducing cutter is intermittent along the spiral direction around the rotating shaft, and the inner periphery of the casing on the starting end side where the raw material is charged A fixed insertion portion fixing tooth is provided in An inclined surface that gradually approaches the start end side as it goes from the inner diameter side to the outer diameter side is provided on the edge on the spiral direction start end side of the rotating blade that faces the charging portion fixing tooth.

Usually, when the spiral rotating blade is intermittent in the spiral direction, the raw material may not be separated by being fitted or entangled with the intermittent portion. If the raw material is not separated from the rotating blade and the amount of adhesion is gradually increased, the efficiency of cutting and volume reduction is lowered, so that the aforementioned clogging at the end portion is likely to occur.
Therefore, by providing an inclined surface that gradually approaches the starting end side from the inner diameter side toward the outer diameter side at the edge of the rotating blade in the spiral direction starting end side, the adhering material is moved to the starting end side, that is, rotated by the feeding portion fixing teeth. It is guided to the outer diameter side so as to be pulled backward in the rotational direction of the shaft (see FIG. 5B). For this reason, the raw material does not adhere to the rotating blade, and the clogging between the fixed teeth and the rotating teeth at the end portion can be prevented without reducing the efficiency of cutting and volume reduction.

  This invention provides an inclined surface that gradually approaches the end side as it goes from the outer diameter side to the inner diameter side at the edge of the start end side of the terminal end fixed tooth provided at the terminal end in the feed direction of the casing of the volume reducing cutter. Since the teeth are arranged on the terminal side of the terminal fixed tooth, the cutting of the raw material by the terminal fixed tooth and the rotating tooth is performed at a portion closer to the inner diameter where the shear force is stronger, and the cutting is performed more reliably. Will come to be. For this reason, it can prevent that the raw material cut | disconnected incompletely becomes clogged between a termination | terminus part fixed tooth and a rotation tooth.

In addition, the rotary blade of the rotary shaft inserted into the casing of the volume reducing cutter is intermittent along the entire length in the spiral direction around the rotary shaft, and the feed portion is fixed to the inner periphery of the casing on the starting end side where the raw material is fed. Since a fixed tooth is provided and an inclined surface gradually approaching the starting end side from the inner diameter side toward the outer diameter side is provided at the edge of the rotating blade in the spiral direction facing the insertion portion fixed tooth, the rotating blade has The adhering raw material is guided toward the starting end side by the feeding portion fixing teeth, that is, to the outer diameter side so as to be pulled back in the rotation direction of the rotating shaft, and the efficiency of cutting and volume reduction is not reduced. For this reason, clogging between the terminal end fixed teeth and the rotating teeth can be prevented.
Further, if the rotating blade is rotated at a high speed together with the rotating shaft, the centrifugal force acting on the raw material increases, and the raw material charged into the casing moves toward the outer diameter side by the strong centrifugal force. For this reason, the raw material is easily cut between the feeding portion fixed tooth and the rotary blade, and even if there is only one shaft, the raw material is less likely to be wound around the rotary shaft (shaft).

  As a specific embodiment of the first means, a spiral rotating blade is inserted into the casing, and a spiral rotating blade standing radially outward is provided on the outer periphery of the rotating shaft. The rotating blade is provided so as to be able to rotate integrally with the rotating shaft, and the rotating blade has a function of transferring the raw material charged into the casing from the starting end side of the rotating shaft to the terminal end side while cutting and reducing the volume, than the rotating blade. A stationary terminal fixed tooth protruding radially inward is provided on the inner periphery of the casing on the terminal side, and the rotating tooth facing the terminal side of the terminal fixed tooth is disposed on the outer periphery of the rotating shaft. In the uniaxial volume reduction cutter having a function of cutting the raw material transferred to the terminal side by the terminal teeth and the terminal teeth, the edge of the terminal section fixed teeth on the start side On the outer diameter side Gradually it can adopt a structure in which a guide portion inclined so as to approach the terminal end toward the Luo inner diameter side.

  Further, as a specific embodiment of the second means, a spiral rotating blade is inserted in the casing, and a single rotating shaft that rotates about the axis by a driving force and stands up radially outward on the outer periphery of the rotating shaft. The rotary blade has a function of transferring the raw material charged into the casing from the start end side of the rotary shaft to the end side while cutting and reducing the volume, and from the rotary blade. Also, a stationary terminal fixed tooth protruding radially inward is provided on the inner periphery of the casing on the terminal side, and the rotating tooth facing the terminal side of the terminal fixed tooth is rotated on the outer periphery of the rotating shaft. In the uniaxial volume reduction cutting machine that is provided so as to be integrally rotatable with a shaft and has a function of cutting the raw material transferred to the terminal side by the terminal portion fixing tooth and the rotating tooth, the rotating blade is configured to rotate the rotating shaft. Outside A plurality of plate-like members standing radially outward from the rod are formed in the spiral shape by intermittently juxtaposing along the spiral direction around the rotation axis, and radially inward of the inner periphery of the casing on the start end side. The fixed insertion portion fixing teeth that protrude toward the fixing portion are provided, and the rotation blades facing the insertion portion fixing teeth are gradually moved from the inner diameter side toward the outer diameter side toward the outer edge side. The structure provided with the release part which inclines so that it may approach may be employ | adopted.

Furthermore, in the specific embodiment of the second means, the configuration in the specific embodiment of the first means, that is, the edge on the start end side of the terminal portion fixing tooth, from the outer diameter side toward the inner diameter side. It is also possible to adopt a configuration in which a guiding portion that is inclined so as to gradually approach the end side is provided.
In this way, the cutting by the terminal fixed teeth and the rotating teeth at the terminal end is surely performed by the effect of the first means, and the raw material transferred to the terminal side is Due to the effect of the second means, the cutting and volume reduction are surely performed on the starting end side.
For this reason, clogging between the terminal end fixed teeth and the rotating teeth can be prevented more reliably.

Note that the release portion may have an arc shape along the rising direction of the rotary blade. Moreover, it is good also considering the said guidance | induction part as the circular arc shape along the protrusion direction of the said terminal part fixed tooth. Further, in the configuration having both the release portion and the guide portion, the release portion has an arc shape along the rising direction of the rotary blade, and the guide portion has an arc shape along the protruding direction of the terminal end fixed teeth. The configuration described above can be adopted.
If the release part and the guide part are arcuate, it can be said that the radial guidance of the raw material is smooth along the arc, respectively.

Further, in the configuration in which the terminal portion fixing tooth is provided with the guide portion, the terminal portion fixing tooth is a plate-like member standing radially inward from the inner periphery of the casing, and the surface direction of the plate surface of the plate-like member is A configuration in which the direction is parallel to the axis of the rotating shaft may be employed.
If it does in this way, the area of the space | gap except a rotating shaft and the terminal part fixed tooth can be ensured widely in the cross section in the axis orthogonal direction in the casing in the part in which the terminal part fixed tooth exists.
For this reason, when the raw material is cut between the terminal portion fixing tooth and the rotating tooth facing the terminal side, the raw material remaining on the starting end side after the cutting passes through the terminal portion fixing tooth. It becomes easy. For this reason, it is advantageous in preventing clogging of raw materials.

Furthermore, the rotation blade and / or the rotation teeth may be configured to be detachable from the rotation shaft.
If the rotating blade and the rotating tooth are detachable, only the worn rotating blade and the rotating tooth can be replaced without replacing the rotating shaft when the rotating blade and the rotating tooth are worn.

  An embodiment of the present invention will be described with reference to the drawings. In this example, aquatic plants that grow in lakes and marshes are sucked together with water by a pump equipped with aquatic cutters from the shore or on the ship, and then cut and volume-reduced using raw aquatic plants separated from water on land. It is a uniaxial volume reduction cutter that is used when performing. The recovered aquatic plants can be handled in a dry state or a wet state.

  In the configuration of the uniaxial volume reduction cutter, a single rotary shaft 1 having a circular cross section is inserted into a cylindrical casing 2 that is fixed to the frame F in the lateral direction. The rotating shaft 1 protrudes outward through the central holes 8a and 9a of the end face plates 8 and 9 that close the end faces on both axial sides of the casing 2, and the protruding portion is a bearing device 13 provided in the frame F. , 14 is rotatably supported around its axis c. The rotating shaft 1 may be a hollow cylinder.

In the upper part of the casing 2 shown in FIG. 1 on the right side in the drawing, an input part 3 for supplying a material to be crushed is provided so as to open upward. Since the hopper 7 is provided around the charging portion 3, the raw material put in the hopper 7 is gradually introduced into the casing 2 through the charging portion 3.
As shown in FIG. 5A, the charging portion 3 is provided with a charging portion fixing tooth 40 that protrudes upward into the casing 2. The input portion fixing tooth 40 is formed of an elongated plate-like member, and is provided over the entire length of the input portion 3 along the axial direction of the rotating shaft 1 (that is, the cylinder axis direction of the casing 2). .

  In addition, a discharge part 4 for discharging the cut raw material out of the casing 2 is provided in the lower part near the left side in the drawing, and is opened downward.

  A drive device 5 is provided in the bearing device 13 on the right end side in the drawing. As shown in FIG. 1, the driving force of the motor M is transmitted to the rotating shaft 1 through a belt 5c connecting a pulley 5a provided on the driving shaft of the motor M and a pulley 5b provided on the rotating shaft 1. It has become so. Moreover, the clearance gap between the outer periphery of the rotating shaft 1 and the inner periphery of the holes 8a and 9a of the said both end surface plates 8 and 9 is closed so that an internal raw material may not come out.

In the casing 2, a spiral rotary blade 10 that can rotate integrally with the rotary shaft 1 is provided on the outer periphery of the rotary shaft 1.
The rotary blade 10 is fixed with a large number of two types of plate-like blade bodies 15 and 16 that are intermittently arranged in parallel along the spiral direction around the axis c of the rotary shaft 1. The rotating shaft 1 is erected radially outward from the outer periphery.
By rotating around the axis of the rotary shaft 1 by the driving force, the raw material charged into the casing 2 from the charging portion 3 is gradually cut and reduced from the starting end side on the right side in the drawing toward the terminal end side on the left side in the drawing. It has the function of transferring while holding.

Of the two types of blade bodies 15 and 16, the blade 15 provided immediately below the input portion 3 on the start end side has the same width toward the radially outer side as shown in FIGS. 2 (a) and 2 (b). It is a flat plate-like member consisting of a parallel portion 15b that extends and a reduced diameter portion 15c whose width gradually decreases from the parallel portion 15b toward the tip 15a.
The parallel portion 15b of each blade body 15 is provided with an arc-shaped notch R at the edge 11 on the spiral end side, and the portion of the notch R near the outer diameter is from the inner diameter side to the outer diameter side. The release part 12 which inclines so that it may approach the start end side gradually as it goes to is comprised.

  As shown in FIGS. 2 (c) and 2 (d), the blade body 16 provided on the end side is parallel to the parallel portion 16b extending in the same width toward the radially outer side, as in the blade body 15 on the start end side. This is a flat plate-like member composed of a reduced diameter portion 16c whose width gradually decreases from the portion 16b toward the tip end 16a. The notch R is not provided.

  Further, as shown in FIG. 1, the spiral pitch L2 of the spiral around the axis c of the rotary shaft 1 formed by the blade body 16 on the end side is larger than the spiral pitch L1 of the spiral formed by the blade body 15 on the start end side. It is getting shorter.

As shown in FIG. 2, the blade bodies 15 and 16 of the rotary blade 10 are fixed to the rotary shaft 1 by welding. For example, if a bracket or the like is provided on the outer periphery of the rotary shaft 1 in advance. The blade main bodies 15 and 16 can be detachably attached to the bracket or the like by means such as bolts.
The rotating blade 10 is not continuous in a spiral shape, and the blade bodies 15 and 16 described above are composed of plate-like members that are interrupted along the spiral direction. Therefore, such a detachable structure is possible. And can be easily attached and detached.
If the rotary shaft 1 is detachable, it is sufficient to replace only the blade bodies 15 and 16 without replacing the entire rotary shaft 1 when the blade bodies 15 and 16 are worn.

  In addition, a stationary stationary tooth 20 that protrudes inward in the radial direction is provided on the inner periphery of the casing 2 on the terminal side of the rotating blade 10.

  As shown in FIG. 4, the end portion fixing teeth 20 are composed of a plurality of plate-like members that stand radially inward from the inner circumference of the casing 2, and the plurality of plate-like members are arranged on the inner circumference of the casing 2. It is provided radially at equal intervals along the circumferential direction.

  These terminal portion fixing teeth 20 are fixed to an arcuate member 24 along the inner periphery of the casing 2, and the arcuate member 24 is fixed to the casing 2 with a bolt or the like. The arc-shaped members 24 are used in pairs, and when the two arc-shaped members 24 are fixed so as to be addressed to the entire circumference in the casing 2, the plate surfaces of all the fixed teeth 20 (plate-shaped members). Is directed in a direction toward the axis c of the rotary shaft 1.

In addition, a guide portion 22 that is inclined toward the end side gradually from the outer diameter side toward the inner diameter side is provided on the edge 21 on the start end side of each end portion fixing tooth 20.
As shown in FIG. 3A, the guide portion 22 has an arc shape along the protruding direction of the terminal portion fixing tooth 20.

Further, on the outer periphery of the rotating shaft 1, a rotating tooth 30 is provided so as to face the terminal side of the terminal portion fixing tooth 20. As shown in FIG. 4, the rotating tooth 30 includes a bracket 32 provided on the outer periphery of the rotating shaft 1, and a replacement tooth 33 that is detachably attached to the bracket 32 by bolting. If the bolt is inserted into the long hole 33a provided in the replacement tooth 33 and the hole 32a provided in the bracket 32 and the replacement tooth 33 is fixed to the bracket 32 by fastening with a nut, each replacement tooth 33 is integrated with the rotary shaft 1. Can be rotated. If the nut is loosened and the replacement tooth 33 is pulled away from the bracket 32, the bolt moves in the elongated hole 33a so that the replacement tooth 33 can be easily detached from the bracket 32.
In addition, a slight gap w is provided between the edge 25 on the terminal end side of the terminal fixed tooth 20 and the surface 31 on the start end side of the rotating tooth 30. The end portion fixing teeth 20 and the rotating teeth 30 have a function of cutting the raw material transferred to the end side.

As shown in FIG. 1 a, the rotating shaft 1 can be divided into left and right at a coupling portion 6 positioned above the discharge portion 4 on the terminal end side. The left and right split shafts 1a and 1b are provided with flanges 6a and 6b, respectively, sandwiching the coupling portion 6. If the flanges 6a and 6b are fastened with bolts or the like, one split shaft 1a or 1b is provided. The rotary shaft 1 is connected.
Further, as shown in FIG. 1b, the split shaft 1a shown on the right side of FIG. 1a has a plurality of cylindrical members having blade bodies 15 and 16 arranged in parallel in the axial direction, and the shaft 1c is inserted into each cylindrical member. And integrated. At this time, a groove 1d extending along the axial direction is provided on the outer periphery of the shaft 1c, and a protrusion 1e in the same direction is provided on the inner periphery of each cylindrical member, and the groove 1d and the protrusion 1e are engaged with each other. Both are fixed so as not to be relatively rotatable around the axis, and are fixed so as not to be relatively movable in the axial direction by appropriate fixing means.
Further, the end portion of the shaft 1c on the terminal side is fitted into the inner diameter portion of the flange 6a, and is fixed to the cylindrical member having the flange 6a so as not to be relatively movable in the axial direction and relatively unrotatable around the axis. The end portion of the shaft 1c on the start end side is fitted into the inner diameter portion of the end face plate 8, and is fixed so as to be relatively rotatable around the axis.

  For this reason, when the rotary blade 10 and the fixed teeth 30 are maintained, if the rotary shaft 1 is separated into the left and right split shafts 1a and 1b at the connecting portion 6, the shaft of the split shaft 1a from the bearing device 13 on the right side in the figure. There is no need to remove 1c. That is, if the split shaft 1b is removed from the bearing device 14 and the end face plate 9 on the left side in the drawing and each cylindrical member is extracted from the shaft 1c, the rotating blade 10 and the fixed teeth 30 can be replaced and maintained in a wide space outside the casing 2. Work is possible.

The operation of this embodiment will be described. While the rotary shaft 1 is rotated around the axis c by the driving force of the motor M, the raw material is introduced into the hopper 7 provided at the start end portion of the casing 2. The charged raw material is introduced into the casing 2 from the charging portion 3 and is wound between the charging portion fixing teeth 40 and the blade body 15 with the rotation of the rotary shaft 1 and gradually cut into fine pieces.
In addition, since the surface direction of the plate surface of each blade body 15 that is a plate-like member is along the spiral around the axis c of the rotary shaft 1, the raw material is turned into the spiral by the rotation of the rotary shaft 1. It is transferred toward the end side along.

  At this time, the raw material entangled with the blade body 15 provided intermittently along the spiral direction enters the notch R as shown in FIG. In particular, in this embodiment, since the raw material is aquatic plants, the slender stems of the aquatic plants tend to be in a state of clinging to the blade body 15 while being bent.

However, when the blade main body 15 comes to the position of the insertion portion fixing tooth 40, the raw material that has entered the notch R is input together with the rotation of the rotary shaft 1 in the rotational direction C as shown in FIG. While the raw material is drawn to the outer diameter side by the part fixing teeth 40, the raw material is guided to the spiral blade start end side of the rotary blade 10 and is detached from the notch R as indicated by an arrow D.
This is because the effect of the release portion 12, that is, the notch R provided at the edge of the blade body 15 on the spiral direction start end side, gradually increases as the portion closer to the outer diameter moves from the inner diameter side toward the outer diameter side. This is due to the arcuate inclined surface approaching the side. For this reason, the efficiency of cutting and volume reduction of the rotating blade 10 is not reduced.
Further, if the blade body 15 is rotated at a high speed together with the rotary shaft 1, the centrifugal force acting on the raw material increases, and the raw material charged into the casing 2 is easily moved toward the outer diameter side by the strong centrifugal force. . For this reason, the raw material is easily cut between the input portion fixing tooth 40 and the blade body 15 (the position indicated by the symbol v in the figure), and even if it is a uniaxial volume reduction cutter, the raw material is placed on the rotary shaft 1. Has the effect of becoming difficult to wind.

  The raw material that has been cut and volume-reduced by the blade body 15 on the start end side and the insertion portion fixing teeth 40 is eventually transferred to the position of the blade body 16 on the end side. The spiral pitch L2 formed by the blade body 16 on the end side is shorter than the spiral pitch L1 formed by the blade body 15 on the start end side, so that the raw material receives a higher compressive force than the start end portion, and the volume reduction is reduced. The effect is relatively high.

The raw material that has passed through the blade body 16 on the end side is sandwiched between the stationary stationary tooth 20 and the rotating tooth 30 to be further cut.
At this time, the raw material put into the volume reducing cutter tends to be biased toward the outer diameter side due to centrifugal force, but as shown in FIG. By providing, the raw material moves to the terminal end side as indicated by an arrow A and is guided to the inner diameter side as indicated by an arrow B along the arc-shaped inclined surface of the guide portion 22.
For this reason, the cutting by the terminal fixed teeth 20 and the rotating teeth 30 on the terminal side is performed at a portion closer to the inner diameter where the shearing force is stronger, that is, a portion near the base of the scissors, so that the cutting is more reliably performed. (Refer to radii r1 and r2 shown in the figure). For this reason, it can prevent that the raw material cut | disconnected incompletely becomes clogged between the termination | terminus part fixed tooth | gear 20 and the rotation tooth | gear 30. FIG.

Further, since the surface direction of the plate surface of the terminal portion fixing tooth 20 which is a plate-like member is a direction toward the axis c of the rotating shaft 1, the inside of the casing 2 in the portion where the terminal portion fixing tooth 20 is interposed. In the cross section in the direction perpendicular to the axis, it is possible to ensure a wide area of the gap excluding the rotating shaft 1 and the terminal portion fixing teeth 20.
For this reason, a wide space through which the raw material can pass can be secured, and the structure is advantageous in preventing clogging of the raw material.

  The raw material that has passed through the terminal end fixed tooth 20 and the rotating tooth 30 is discharged to the outside from the discharge port 4 provided at the terminal end, and is carried out to the next step.

In this embodiment, the release portion 12 has an arc shape along the rising direction of the rotary blade 10, but the release portion 12 is configured so that it gradually approaches the start end side from the inner diameter side toward the outer diameter side. As long as it inclines, as another example, as shown in Drawing 7 (a), it may incline linearly, for example.
In addition, in this embodiment, the guiding portion 22 has an arc shape along the protruding direction of the terminal portion fixing teeth 20, but as another embodiment, for example, as shown in FIG. May be inclined.

Furthermore, in the said Example, the said terminal part fixed tooth | gear 20 is made into the plate-shaped member which stands up radially inward from the inner periphery of the said casing 2, The surface direction of the plate | board surface of the plate-shaped member is made into the axial center of the said rotating shaft 1. However, as another embodiment, for example, as shown in FIG. 8, each terminal portion fixing tooth 20 may be slightly inclined in the circumferential direction. If it does in this way, the angle (alpha) which the surface direction of the plate | board surface of the terminal part fixed tooth | gear 20 in the part which cuts a raw material and the surface direction of the plate | board surface of the rotation tooth | gear 30 will become an acute angle (refer Fig.8 (a)). Therefore, the cutting performance is improved.
Note that the terminal portion fixing teeth 20 may not be plate-shaped members, but may be configured by arc-shaped blocks along the inner periphery of the casing 2.

Front view of one embodiment Exploded view of FIG. Detailed view of rotating blade Detailed view showing rotating and fixed teeth (A) (b) is a perspective view which shows the positional relationship of a rotation tooth and a fixed tooth, (c) is explanatory drawing of replacement | exchange of the rotation tooth (A) is sectional drawing which shows the positional relationship of a rotary blade and an insertion part fixed tooth, (b) is explanatory drawing which shows the effect | action of a rotary blade and an insertion part fixed tooth. Explanatory drawing which shows the effect | action of a rotation tooth and a terminal part fixed tooth (A) is a perspective view which shows the rotary blade of another Example, (b) is a front view which shows the terminal part fixed tooth | gear The rotation tooth and termination | terminus part fixed tooth of another Example are shown, (a) is a front view, (b) is a side view. A conventional example is shown, (a) is a front view, (b) is a side view showing a terminal portion fixing tooth and a rotating tooth, and (c) is a perspective view thereof. Front view of conventional example

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rotating shaft 2 Casing 3 Input part 4 Discharge part 5 Drive device 6 Coupling part 6a, 6b Flange 7 Hopper 8, 9 End face plate 10 Rotary blade 11 Edge 12 of starting end Release parts 15, 16 Blade body (plate-like member)
20 End portion fixed tooth 21 Start end side edge 22 Guide portion 30 Rotating tooth 31 Start end side surface 32 Bracket 33 Replacement tooth 40 Input portion fixed tooth M Motor

Claims (8)

A single rotary shaft 1 that rotates about the axis by a driving force is inserted into the casing 2, and a spiral rotary blade 10 that stands radially outward on the outer periphery of the rotary shaft 1 can rotate integrally with the rotary shaft 1. The rotating blade 10 has a function of transferring the raw material charged into the casing 2 from the starting end side of the rotating shaft 1 to the end side while cutting and reducing the volume, and the rotating blade 10 is located on the end side more than the rotating blade 10. A stationary terminal fixed tooth 20 protruding radially inward is provided on the inner periphery of the casing 2, and the rotating tooth 30 facing the terminal side of the terminal fixed tooth 20 is rotated on the outer periphery of the rotating shaft 1. In the uniaxial volume reduction cutting machine which is provided so as to be integrally rotatable with the shaft 1 and has a function of cutting the raw material transferred to the terminal side by the terminal portion fixing teeth 20 and the rotating teeth 30;
A uniaxial volume reduction cutting machine characterized in that a guide portion 22 is provided at an edge 21 on the start end side of the end portion fixing tooth 20 so as to be gradually inclined toward the end side from the outer diameter side toward the inner diameter side. . A single rotary shaft 1 that rotates about the axis by a driving force is inserted into the casing 2, and a spiral rotary blade 10 that stands radially outward on the outer periphery of the rotary shaft 1 can rotate integrally with the rotary shaft 1. The rotating blade 10 has a function of transferring the raw material charged into the casing 2 from the starting end side of the rotating shaft 1 to the end side while cutting and reducing the volume, and the rotating blade 10 is located on the end side more than the rotating blade 10. A stationary terminal fixed tooth 20 protruding radially inward is provided on the inner periphery of the casing 2, and the rotating tooth 30 facing the terminal side of the terminal fixed tooth 20 is rotated on the outer periphery of the rotating shaft 1. In the uniaxial volume reduction cutting machine which is provided so as to be integrally rotatable with the shaft 1 and has a function of cutting the raw material transferred to the terminal side by the terminal portion fixing teeth 20 and the rotating teeth 30;
The rotary blade 10 is configured in a spiral shape by intermittently juxtaposing a plurality of plate-like members standing radially outward from the outer periphery of the rotary shaft 1 along the spiral direction around the rotary shaft 1; On the inner periphery of the casing 2 on the start end side, a stationary insertion portion fixing tooth 40 that protrudes inward in the radial direction is provided, and the rotating blade 10 facing the insertion portion fixing tooth 40 on the start end side in the spiral direction. 1. A uniaxial volume reduction cutter characterized in that a release portion 12 is provided at the edge 11 so as to gradually approach the start end side from the inner diameter side toward the outer diameter side.   The guide part 22 which inclines so that it may approach to a terminal side gradually as it goes to the internal diameter side from the outer diameter side was provided in the edge 21 of the starting end side of the said terminal part fixed tooth | gear 20 of Claim 2 characterized by the above-mentioned. Single axis volume cutting machine.   The uniaxial volume reduction cutting machine according to claim 2 or 3, wherein the release portion (12) has an arc shape along the rising direction of the rotary blade (10).   The uniaxial volume reduction cutting machine according to claim 1 or 3, wherein the guide portion (22) has an arc shape along a protruding direction of the terminal portion fixing tooth (20).   4. The release portion 12 has an arc shape along the rising direction of the rotary blade 10, and the guide portion 22 has an arc shape along the protruding direction of the terminal end fixing tooth 20. Uniaxial volume reduction cutter.   The terminal portion fixing tooth 20 is a plate-like member that rises radially inward from the inner periphery of the casing 2, and the surface direction of the plate surface of the plate-like member is a direction parallel to the axis c of the rotary shaft 1. The uniaxial volume reduction cutter according to any one of claims 1, 3, 5 and 6.   The uniaxial volume reduction cutter according to any one of claims 1 to 7, wherein the rotary blade (10) and / or the rotary tooth (30) are detachably attached to the rotary shaft (1).

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