JPH07136537A - Device for reducing bulk of waste product - Google Patents

Abstract

PURPOSE:To easily replace cutters in a device for pulverizing a plastic waste product to reduce its bulk. CONSTITUTION:In the device for reducing bulk of waste rotating cutters 25, 26 and a fixed cutter 29 are laminated so as to make the slidable inside a casing 8 installed below a hopper 6 in which a waste product is thrown, and the rotating cutters 25, 26 are rotated by a motor 13 to pulverize the waste product. When the rotating cutters 25, 26 and the fixed cutter 29 are replaced, it is easily done without a driving mechanism part being disassembled, as is that of the conventional device.

Description

Detailed Description of the Invention

[0001]

[Industrial application] A device for crushing and reducing the volume of plastic waste such as plastic bottles to reduce the cost. Especially, the blade can be easily attached to and detached from the machine body for easy maintenance. To provide the device.

[0002]

2. Description of the Related Art As a conventional apparatus of this type, there is an apparatus for reducing the volume of fine waste according to the invention of Japanese Patent Application No. 4-257103 of the same applicant. As shown in FIGS. 9 and 10, the fixed blade 2 and the rotary blade 3 are slidably laminated in the casing 1 and the rotary blade 3 fixed to the casing 1 side is integrally formed with the casing 1a, 1b. The waste is put into the casing 1 by being rotated by a motor 5 via a pulley 4 and crushed.

The blade is severely damaged by foreign matter, friction, etc., and it is necessary to replace it frequently. However, in the conventional apparatus, the casing 1a must be removed before the blade is replaced.
The lower fixed blade 2 and the rotary blade 3 cannot be replaced. Since the upper casing 1a is connected to the drive device via the pulley 4, the removal and restoration work is troublesome.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a device that can easily replace a blade by improving a conventional device that is difficult to maintain.

[0005]

In the device of the present invention, the casing which was conventionally divided into the upper and lower parts is set as one, and the fixed blade at the lower portion is supported by the support shaft erected in the casing, thereby exchanging the blade. In this case, it is possible to simply remove the blades in the upper part in order and replace them without removing the other mechanical parts.

[0006]

[Function] Among the blades, the fixed blade is fixed to the machine frame only at the uppermost portion, and the other is supported by the central axis set upright in the cylindrical casing, while the rotary blade is also centered on the central axis. The part is pivotally supported and fixed to the cylindrical casing. Therefore, when exchanging the blade, the fixed blade at the uppermost portion can be removed from the machine frame, and the other blades can be sequentially removed from the upper portion without disassembling the drive unit.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the embodiments of the drawings. Reference numeral 6 shown in FIG. 1 is a funnel-shaped hopper having a lower opening 6a fixed to the upper portion of the machine frame 7. A cylindrical casing 8 is arranged below the lower opening 6a. The cylindrical casing 8 is supported by a bearing device 9 provided on the machine frame 7 such that the outer periphery of the lower portion thereof can rotate horizontally. On the other hand, a pulley 10 is integrally formed on the outer periphery of the upper portion, and a belt 11 and a motor pulley 12 engaged with the pulley are synchronized with the motor 13.

Reference numeral 14 denotes a screen having a large number of through holes 15, which is slidable with respect to the lower end of the cylindrical casing 8 and is fixed to the machine frame 7 by closing the lower opening.

Reference numeral 16 denotes a fixed blade suspended above the opening of the cylindrical casing 8 and having both ends fixed to the machine frame support 7a.

A support shaft 17 is fitted into the center of the fixed blade 16 and the center of the screen 14 by means of both the square holes 18 and 19 and the corner fitting projections 20 and 21, so that the support shaft 17 is in the cylindrical casing 8. It stands in the center of.

As shown in FIG. 3, the support shaft 17 has a sliding portion 22, in the middle of the corner fitting projections 20 and 21 formed at the upper and lower ends.
23 and the corner fitting portion 24 are formed.

Reference numerals 25, 26, and 26a denote rotary blades, which are engaged with sliding portions 22 and 23 of the support shaft 17 through a bearing in a central shaft hole 27, and both ends thereof are cylindrical as shown in FIG. It is fixed to the inner peripheral steps 42 and 43 of the casing 8.

Reference numeral 29 denotes a fixed blade, and a square hole 30 formed at the center is fitted into a square fitting portion 24 of the support shaft 17 and supported horizontally by the support shaft 17.

Both ends of the fixed blade 29 are cylindrical casing 8
It has a length that does not interfere with the surrounding walls.

Fixed blades 16, 29 and rotary blades 25, 2
6, 26a are blade mounting portions 3 as shown in FIGS.
1 and the blade 32 and the pusher 33.

The blade mounting portion 31 has fixing holes 34 at both ends,
The rotation direction end face 36 of the arm portion 35 has a V-shaped cross section as shown in FIG. 6, the blade 32 shown in FIG. 9 is vertically engaged with the end face 36, and the pusher 33 firmly fixes the bolt 37 with the bolt 37. Is stuck to.

When the blade 32 is attached, the blade tip 38 is positioned by the pusher 33 so that the blade tip 38 projects slightly from the upper and lower surfaces of the blade attachment portion 31, and the bolt 37 is pushed through the through hole 40 of the blade attachment portion 31. It is screwed into the screw hole 39 of the child 33 and firmly fixed.

The cutting edge 38 of the blade 32 has a corrugated shape curved horizontally and vertically as shown in FIG.
Is designed to make it easy to eat.

The illustrated groove 41 serves as an insertion groove for the bolt 37.

The rotary blades 25, 26, 26a and the fixed blade 29 in the above-described state are stacked and mounted inside the cylindrical casing 8 as described above, and the protrusion degree of the blade 32 slides on each other to achieve an ideal operation. It is set to run.

With the above construction, when the motor 13 is started and waste such as a bed bottle is put into the hopper 6,
It is crushed by the upper rotary blade 25 and the fixed blades 16 and 29, and then continuously crushed by the lower rotary blades 26 and 26a, the fixed blade 29 and the screen 14, and passes through a large number of through holes 15 of the screen 14. When it becomes a size, it passes through the through hole 42 and is dropped and stored in the case 44 below this.

Further, among the sizes which cannot pass through the through hole 15 of the screen 14, those which are inserted into the through hole 15 of the screen 14 are cut by the rotary blade 26a and fall in the same manner as above, and this action is continued. The plastic bottle that was thrown in is crushed into a fine and uniform state.

The size of the through holes 42 of the screen determines the size of the shreds.

[0024]

[Effect] Since the present invention is configured as described above, the blade can be removed without disassembling the drive mechanism when exchanging the blade as in the conventional device, so that maintenance is easy and the adjustment between the blades is easy. You can do it.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a volume reducing device according to the present invention.

FIG. 2 Same as above

FIG. 3 is an exploded perspective view showing how the blade is attached.

FIG. 4 is a plan view of the rotary blade.

FIG. 5 is a front view seen from five directions in FIG.

6 is a sectional view taken along line 6-6 of FIG.

FIG. 7 is a perspective view of a pusher.

FIG. 8 is a perspective view of a blade

FIG. 9 is a vertical sectional view of a conventional volume reducing device.

FIG. 10 Same as above

[Explanation of symbols]

6 ... Hopper 7 ... Machine frame 8 ... Cylindrical casing 9 ... Bearing device 13 ... Motor 14 ... Screen 15 ... Through hole 16 ...
・ Fixed blade 17 ・ ・ ・ Spindle 25, 26, 26a ・ ・ ・ Rotating blade 28 ・ ・ ・ Bearing 29 ・ ・ ・ Fixed blade 44 ・ ・ ・ Case

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B02C 18/44 ZAB B 9042-4D B29B 17/00 ZAB 9350-4F // B09B 5/00 ZAB

Claims (1)

[Claims] 1. A hopper provided on the upper part of a machine frame, and an opening facing the lower part of the hopper, while a pulley is formed on the outer periphery of the hopper, which is rotatably supported by a bearing device.
Also, a cylindrical casing that rotates in synchronism with the motor via this pulley, a screen having a large number of through holes and slidably closing the lower opening of the cylindrical casing and fixed to the machine frame; An upper fixed blade that is laid horizontally above the opening and fixed to the machine frame, a support shaft that is erected at the center of the cylindrical casing by hooking the upper and lower ends of the upper fixed blade and the screen, and the above inside the cylindrical casing. The upper fixed blade and one or more fixed blades laminated horizontally so that the mutual blades slide in parallel to each other, and the rotary blade, and the rotary blade supports the center of rotation on the spindle through a bearing device. The waste volume reducing device is characterized in that both ends are fixed to a cylindrical casing and the fixed blade is hooked by restricting rotation about a rotation center as a spindle.