JP2673669B2 - Cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a shredder dust,
The present invention relates to a cutting machine that cuts paper, roll-shaped or string-shaped plastic, bale goods, and other waste into small pieces.

[0002]

2. Description of the Related Art Conventionally, as this type of cutting machine, there is known a cutting machine described in DE 42 42 740 A1. This cutting machine, as shown in FIGS.
A cutting chamber 32 having a hopper 31 attached thereto is provided on a machine base 33, and an octagonal prism driven by an electric motor or a hydraulic motor (not shown) is provided in a discharge port 34 provided at one side of the cutting chamber 32. The rotor 35 of FIG.
Around the outer periphery of 5, a triangular V-shaped bottom face 36a is formed by cutting out between the adjacent ridges 35a in the axial direction so as to become deeper from the front to the rear in the rotational direction (the direction of the white arrow in FIG. 9), A large number of cutter engaging grooves 36, which are composed of the bottom surface 36a and a rear surface 36b perpendicular to the bottom surface 36a, are provided in a plurality of spiral shapes, and each cutter engaging groove 36 has a cutter 37 having a rectangular parallelepiped shape with a square cross section. 2 bolts 3 so that the part forms a triangular cutting edge 37a
8, a plate-shaped fixed blade 39 having a saw-toothed cutting edge 39a that engages with the cutting edge 37a of each of the above-mentioned cutters 37 is horizontally provided. In FIG. 7, reference numeral 40 is a fixed blade for wiping provided facing the other end edge of the discharge port 34, and is for wiping off the object to be treated attached to each cutter 37. Reference numeral 41 designates a pusher which is provided so as to move forward and backward with respect to the rotor 35 so as to press the object to be treated against the rotor 35.
2 covers the outlet 34 below the rotor 35,
A screen mesh provided along the rotation trajectory of the cutter 37 is supported by a plurality of arcuate reinforcing arms 43. Further, 44 is a receiving tank provided below the screen 42,
A screw conveyor 45 for discharging the product is provided. On the other hand, in FIG. 8, reference numeral 46 denotes two auxiliary fixed blades which are inserted in the middle of the sieve net 42, and cut the object to be processed in cooperation with each cutter 37 in the same manner as the fixed blade 39. It is attached to the reinforcing arm 43 via a holder 47, and is provided so as to be able to move forward and backward with respect to the cutter 37 by an adjusting bolt 48.

In the cutting machine having the above structure, the hopper 31
The object to be processed introduced into the cutting chamber 32 is moved to the bottom of the cutting chamber 32 as the rotor 35 rotates, and is pressed against the rotor 35 by the pusher 41.
9 is gradually cut by the shearing action of 9, and the cut piece moves to the discharge port 34 according to the rotation of the cutter 37, and the auxiliary fixed blade 46
Then, the product cut into a required size by the shearing action of the cutter 37 falls through the mesh of the screen 42 into the receiving tank 44, and is discharged to the outside by the screw conveyor 45. The cut pieces that have not passed through the mesh of the sieve net 42 are cut again by the shearing action of the wiping fixed blade 40 and the cutter 37, and are wiped from the cutter 37 by the wiping action of the wiping fixed blade 40. Together with the cut pieces, they pass through the screen 42 and fall into the receiving tank 44, and are discharged outside the machine by the screw conveyor 45. On the other hand, the object not yet cut into a desired size after passing through the wiping fixed blade 40 is cut by the cutter 37 into the cutting chamber 42.
It is sent to and cut again.

[0004]

However, in the conventional cutting machine, the engagement of the cutter with the cutter engagement groove is an incomplete engagement in which a part of the engagement surface on the cutter edge side is exposed. Therefore, it was necessary to fix it to the rotor with two bolts. For this reason, the number of cutters is usually about 100 even in a small machine and 300 or more in a large machine, and there has been a problem that fixing work with two bolts requires a lot of time. Further, since the cutter engaging groove has the triangular bottom surface and the rear surface, two large recesses are formed between the bottom surface and the rear surface and the peripheral surface of the cutter, and the object to be processed is caught in these recesses. There was a problem that the rotor itself was worn. Therefore, an object of the present invention is to provide a cutting machine that can fix a cutter to a rotor with a single bolt in a short time and can avoid wear of the rotor.

[0005]

In order to solve the above-mentioned problems, the cutting machine of the present invention has a polygonal column-shaped rotor horizontally arranged in the discharge port of the cutting chamber, and has a regular polygonal cross section or an outer periphery of the rotor. A plate-shaped fixed blade having a large number of circular short pillar-shaped cutters attached so that a part of one end surface forms cutting edges, and having cutting edges facing the discharge port and meshing with the cutting edges of the cutters. in was horizontally provided cutting machine, wherein each cutter is formed across at right angles to the outer periphery of the rotor so how side is deeper after the rotational direction of the rotor axial edges one by one, half mosquito Potter A large number of cutter engaging grooves consisting of a bottom surface engageable with the peripheral surface of the cutter, both side surfaces having a width equal to the outer diameter of the cutter, and a rear surface perpendicular to the bottom surface and both side surfaces and having a height substantially equal to the outer diameter of the cutter. B In engaged, and one bolt
It is characterized by being fixed to the data. It is preferable that the cutter engagement groove has a clearance groove at the center of the bottom surface that is perpendicular to the axis. The end surface of the cutter is preferably a plane perpendicular to the axis. Further, the end surface of the cutter may be a concave spherical surface having the center as the deepest portion.

[0006]

In cutting machine the present invention, a recess peripheral surface and one end surface of the half cutter it is fully supported in the cutter engagement groove, and is formed between the cutter in the cutter engaging groove Becomes smaller.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially broken perspective view showing an embodiment of the cutting machine of the present invention. In the figure, reference numeral 1 denotes a box-shaped cutting chamber provided on a machine base 2, and a hopper (not shown) into which an object to be processed is charged is attached to an upper portion thereof. The bottom of one side of the cutting chamber 1 is provided with a rectangular discharge port 3 for discharging the cut object to be processed, and the discharge port 3 is driven in forward and reverse rotation by an electric motor or hydraulic motor (not shown). A regular hexagonal columnar rotor 4 is provided. As shown in FIGS. 2 and 3, a plurality of cutter engagement grooves 5 are provided on the outer periphery of the rotor 4 in a zigzag shape in the circumferential direction of the rotor 4. Each cutter engaging grooves 5 (shown Fig. 2, 3 arrow A, in B.) Direction of rotation of the rotor 4
As deeper Backward side is, the axial edges 4a of the rotor 4
Is formed across one by one at right angles, which will be described later 2 side surface adjacent the cutter and fully engageable V-shaped bottom surface 5a
And both side surfaces 5b having a width equal to the length of the diagonal line of the cutter
And a rear surface 5c perpendicular to the bottom surface 5a and both side surfaces 5b and having a height substantially equal to the length of the diagonal line of the cutter, and the center (bottom portion) of the bottom surface 5a has a clearance perpendicular to the axis of the rotor 4. A groove 6 is provided.

2 to 4 are provided in the respective cutter engaging grooves 5.
As shown in FIG. 2, a cutter 7 having a rectangular parallelepiped shape with a square cross section has two bottom surfaces 5 a and one rear surface 5 which are adjacent two circumferential surfaces and one end surface.
Each cutter 7 is screwed into the rotor 4 through one bolt hole 8 which is abutted against c and is completely engaged, and which is diagonally located in the middle of the long side edge 7a. It is fixed by the bolts 9 and is attached to the rotor 4 so that the adjacent edges 7b in the short side direction at the other end form cutting edges. At the bottom of the cutting chamber 1, as shown in FIGS. 1 and 2, a plate-shaped fixed blade 1 having a saw-tooth cutting edge that meshes at a right angle with the cutting edge of each cutter 7 of the rotor 4 is provided.
0 indicates the tip of the cutting edge is the edge 4 of the rotor 4.
It is horizontally provided so as to be close to a and faces one side edge of the discharge port 3.

As shown in FIG. 2, below the rotor 4, there is provided a sub fixed blade mounting frame 11 which covers the discharge port 3 near the fixed blade 10 along the rotation trajectory of the cutter 7. The sub fixed blade attachment frame 11 includes a curved plate 12 arranged along the rotation path of the cutter 7, and a plurality of arcuate reinforcing arms 13 having one end attached to the machine base 2 to reinforce and support the curved plate 12. Consists of. Then, as with the fixed blade 10, each of the cutters 7 is attached to the auxiliary fixed blade attachment frame 11.
Two auxiliary fixed blades 14 having saw-tooth-shaped cutting edges that mesh at right angles with the cutting edges of
It is attached while being appropriately separated in the direction of rotation. or,
Below the rotor 4, a sieve net 15 that covers the remaining outlet 3 is arranged along the rotation trajectory of the cutter 7. One end of the sieve net 15 is connected to the other end of the reinforcing arm 13. Further, the other end is reinforced and supported by a plurality of arcuate reinforcing arms 16 attached to the machine base 2. On the other hand, at the bottom of the cutting chamber 1, each cutter 7 is provided like the fixed blade 10 and the like.
A plate-shaped fixed blade 17 for wiping, which has a saw-toothed cutting edge that meshes at a right angle with the cutting edge of, is horizontally provided facing the other side edge of the discharge port 3.

In FIG. 1, reference numeral 18 denotes a pusher provided so as to be able to advance and retreat with respect to the rotor 4 so as to press an object to be processed against the rotor 4, and 19 denotes a receiving tank provided below the sieve mesh 15. A screw conveyor 20 for storing the product that has passed through, and discharging the product outside the machine is provided below the product.

In the cutting machine having the above-mentioned structure, the object to be processed, which is put into the cutting chamber 1 from the hopper, is moved to the bottom of the cutting chamber 1 as the rotor 4 rotates and is pressed against the rotor 4 by the pusher 18. Cutter 7 and fixed blade 10
Is gradually cut into small pieces of 8 to 60 mm or less by the shearing action. At the time of the above-mentioned cutting, the cutting is performed by sequentially biting left and right in each range divided into a plurality of widths in the axial direction of the rotor 4, so that even if the object to be processed is a string-shaped object, No entanglement and rotor 4
Thrust force in only one direction does not act on. or,
Since the recess formed between the cutter engagement groove 5 and the cutter 7 is small, it is possible to prevent the object to be processed from being caught in the recess and wearing the rotor itself. Next, when the cut piece is moved to the discharge port 3 with the rotation of the cutter 7, the cut piece is further cut by the shearing action of the two auxiliary fixed blades 14 and the cutter 7 and sent to the sieve screen 15 without causing clogging. The cut pieces having a desired size efficiently pass through the mesh of the sieve mesh 15 and fall into the receiving tank 19, and are discharged outside the machine by the screw conveyor 20. The cut pieces that have not passed through the mesh of the sieve net 15 are cut again by the shearing action of the wiping fixed blade 17 and the cutter 7, and are wiped from the cutter 7 by the wiping action of the wiping fixed blade 17. The receiving tank 1 through the screen 15 together with the cut pieces.
9 and is discharged outside the machine by the screw conveyor 20. On the other hand, an object to be processed which has not been cut into a desired size after passing through the wiping fixed blade 17 is sent to the cutting chamber 1 by the cutter 7 and cut again by the fixed blade 10 or the like. Then, when the cutting edge of the cutter 7, the fixed blade 10, or the like is worn by cutting the object to be processed, the cutter 7 is inverted around the axis, the end face is inverted, or the fixed blade 10 or the like is turned over, or The rotor 4 is approached and dealt with.

In the embodiment described above, the case where the end face of the cutter 7 is a plane perpendicular to the axis has been described, but the present invention is not limited to this, and for example, the cutter 71 shown in FIG. The end surface may be a concave spherical surface whose center is the deepest part. Further, the cutter is not limited to a rectangular parallelepiped having a square cross section, and may have a short columnar shape having a circular cross section as in the cutter 72 shown in FIG. In these cases, the end face of the cutter may be either a planar or a concave spherical surface, and also the cutter engagement groove is adapted to the circumferential surface and one end surface of the half of the cutter can be fully supported It Furthermore, the arrangement of the cutters 7 is not limited to the case where the cutters 7 are arranged in a zigzag pattern continuous in the circumferential direction,
Arbitrary cutters 7 may be omitted to form a plurality of zigzag-shaped arrays that are intermittent in the circumferential direction. Furthermore, the present invention is not limited to the case where the number of rotors is one, and two rotors may be provided side by side. In this case, the fixed blade may be provided in the middle of both rotors, or may be provided on the outside of both rotors.

[0013]

As described in the foregoing, according to the cutting machine of the present invention, since the circumferential surface and one end surface of the half cutter is fully supported in the cutter engagement groove, the fixing of the cutter with respect to the rotor It can be done in a short time with one bolt. Further, since the recess formed between the cutter and the cutter in the cutter engagement groove is small, the object to be processed is not caught in the recess, and the wear of the rotor itself can be avoided.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view showing an embodiment of a cutting machine of the present invention.

FIG. 2 is a sectional view of a main part of the cutting machine of FIG.

FIG. 3 is a front view of a main part of the cutting machine of FIG. 1;

FIG. 4 is a perspective view of a cutter of the cutting machine of FIG. 1.

5 is a perspective view of another cutter of the cutting machine of FIG. 1. FIG.

6 is a perspective view of still another cutter of the cutting machine of FIG. 1. FIG.

FIG. 7 is a side view in which a part of a conventional cutting machine is cut away.

8 is a cross-sectional view of a main part of the cutting machine of FIG.

9 is a front view of a main part of the cutting machine of FIG. 7. FIG.

[Explanation of symbols]

1 Cutting Machine 3 Discharge Port 4 Rotor 4a Ridge 5 Cutter Engagement Groove 5a Bottom 5b Side 5c Rear 6 Escape Groove 7 Cutter 9 Bolt 10 Fixed Blade

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Nobuyuki Katagiri 1780 Kamitakano, Yachiyo-shi, Chiba Kawasaki Heavy Industries Ltd. Yachiyo factory

Claims (4)

(57) [Claims] 1. A polygonal-columnar rotor is horizontally arranged in an outlet of a cutting chamber, and a large number of cutters each having a regular polygonal section or a circular columnar section are provided on the outer periphery of the rotor. In a cutting machine horizontally attached with a plate-shaped fixed blade having a cutting edge that faces the discharge port and meshes with the cutting edge of each of the cutters, across at right angles to the outer periphery of the rotor axial edges one by one is formed as side is deeper way after, mosquito Tsu <br/> the circumferential surface engageable with the bottom surface of the half of the coater, the cutter Engaged in a number of cutter engaging grooves consisting of both side surfaces with a width equal to the outer diameter and a bottom surface and a rear surface at a right angle to the outer diameter of the cutter and substantially the same as the outer diameter of the cutter , and to the rotor with one bolt. Solid
A cutting machine characterized by being fixed . 2. The cutter engagement groove has a clearance groove at the center of the bottom surface which is perpendicular to the axis.
Cutting machine described. 3. The cutting machine according to claim 1, wherein the end surface of the cutter is a plane perpendicular to the axis. 4. The cutting machine according to claim 1, wherein an end surface of the cutter is a concave spherical surface having a center as a deepest portion.