JPH025876Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Field of the invention This invention enables uniform mixing with raw materials when reusing crushed materials such as runners generated during resin molding by mixing them with raw materials for granules. This invention relates to a crusher that crushes into fine granules.

(b) Background of the invention The pulverizer for pulverizing the above-mentioned pulverized material includes, for example,
A crusher 23 as shown in Fig.
This crusher 23 has a crushing chamber 24.
After crushing the pulverized material 4 with a rotary blade 25 for rough finishing that is pivotally supported inside and a fixed blade 26 that is installed opposite to this rotary blade 25, a rotary blade 27 for finishing that is pivotally supported on the lower stage is used.
And the fixed blade 28 further pulverizes the pulverized material 4 flowing down.

However, since the rotary blades 25, 27 and the fixed blades 26, 28 are arranged in the above-mentioned crushing chamber 24 in two stages, upper and lower, or in multiple stages required for forming particles of a predetermined size,
When the pulverized material 4 is cut by the rotary blades 25 and 27, the noise caused by the impact at the time of cutting is extremely large and the working environment is poor, and the main body of the pulverizer 23 becomes large.
The problem is that the drive mechanism is complicated.

Furthermore, since the pulverized material 4 is naturally flowed down and pulverized at the cutting part of each of the rotary blades 25, 27 and each of the fixed blades 26, 28, when the pulverizer 23 is installed in an inclined state, the cutting part There is also a problem that the flow rate of the crushed material 4 is uneven, and the amount of crushed material is reduced compared to the crushing in the normal installation state shown in FIG.

(c) Purpose of the invention This invention consists of each screw part of the rotating screw,
By using the fixed blades installed in opposition to these blades, the pulverized material can be pulverized all at once into granules of a predetermined size by forcibly transporting the pulverized material sequentially and pushing it through. The purpose of the present invention is to provide a pulverizer that can perform stable and efficient pulverization processing.

(d) Structure of the device This device is constructed by arranging a rotating screw inserted into a crushing chamber with multiple stages of screw portions in which the width of the spiral groove becomes narrower and the depth of the spiral groove becomes shallower in order in the transport direction. The pulverizer is characterized in that each screw portion is provided with a fixed blade facing each other.

(E) Function of the device This device allows the crushed material put into the crushing chamber to
Each screw unit is arranged in multiple stages in the transfer direction while being forcibly transferred by the rotation of the rotating screw,
This is successively finely ground while being pressed with each fixed blade installed opposite to this.

(f) Effects of the invention According to this invention, each screw part and each fixed blade press and crush the pulverized material while transporting it.
There is no impact during cutting, the drive noise during pulverization is small and quiet, and at the same time, the cutting blade is difficult to break and can withstand long-term use.Furthermore, since it is pulverized into fine pieces one by one while being forcibly transferred, the cutting The transportation of the pulverized material to the parts is constant, and it is possible to pulverize particles of a predetermined size all at once, allowing efficient pulverization with stable pulverization function.

Furthermore, since the pulverized material is pulverized on the rotating screw, the main body of the pulverizer is only large enough to insert the rotating screw, and at the same time, the drive mechanism can be simplified. Since the material is forcibly transferred, stable pulverization can be achieved without impairing the pulverizing function even if the pulverizer is configured vertically.

(g) Example of the invention An example of the invention will be described below in detail based on the drawings.

The drawings show a pulverizer for pulverizing pulverized materials such as runners generated during resin molding. In FIGS. 3, an input port 2a is opened on the upper surface of the base end of this crushing chamber 2, into which the crushed material 4 such as a runner is introduced, and on the other hand, the crushed material 4 of the pulverized granular material is opened on the lower surface of the other end. At the same time as opening the discharge port 2b, the rotary screw 5 inserted into the crushing chamber 2 is moved in the transport direction into a plurality of screw portions 6, 7, 8 each having a narrow spiral groove width and a shallow spiral groove depth. It is arranged in stages, and each screw part 6, 7, 8 has a
Each corresponding annular fixed blade 9, 10, 11
It is configured by setting them up side by side.

The above-mentioned grinding chamber 2 has a hopper 12 erected above the input port 2a for temporarily storing the pulverized material 4, and this hopper 12 allows the stored pulverized material 4 to flow down in a fixed amount. Then, the powder is supplied into the grinding chamber 2 through the input port 2a.

On the other hand, a tray 13 for storing the crushed material 4 is arranged below the discharge port 2b.

The above-mentioned rotary screw 5 has a first screw portion 6 which has approximately the same diameter as the inner diameter of the crushing chamber 2 and has a length of approximately half the total length of the screw, and is disposed directly below the input port 2a. On the transfer side of section 6, this first
A second screw portion 7 having a slightly smaller diameter is provided which is narrower than the spiral groove width of the screw portion 6 and has a shallow spiral groove depth,
Next, a third screw portion 8 having a slightly smaller diameter is narrower than the spiral groove width of the second screw portion 7 and has a shallow spiral groove depth.
It is arranged and configured.

As shown in FIG.
A sprocket 16 is fixed to the shaft end protruding toward one bearing 14, and the sprocket 16 is connected to the sprocket 18 of the drive motor 17 with a built-in reducer fixed on the base 3. A chain 19 is stretched across the chain 19 and rotated in the direction of the arrow by the driving force of the drive motor 17.

A sprocket 18 having a larger diameter than the sprocket 16 fixed to the above-mentioned rotary screw 5 is fixed to the drive motor 17, and the rotary screw 5 is rotated during crushing.
is rotated at high speed by a drive motor 17.

Each of the fixed blades 9, 10, 11 described above is provided at the front inner edge of each stepped portion 20, 21, 22 formed in correspondence with the stepped shape of each screw portion 6, 7, 8 in the crushing chamber 2, On the inner surface of each of the stepped portions 20, 21, 22, a predetermined size of crushed material 4 crushed at each cutting portion is provided.
Grooves 20a, 21a, and 22a are formed to allow the flow of water.

A fixed blade 22b for final cutting is provided at the rear inner edge of the final stage 22 in the transport direction.

When pulverizing the pulverized material 4 using the pulverizer 1 configured as described above, first, the drive motor 17 is started to rotate the rotary screw 5, and the pulverized material 4 introduced into the hopper 12 is transported into the pulverizing chamber 2. Flow down at a constant rate and forcibly transfer it to the cutting area.

As shown in FIG. 1, this crushed material 4 is pressed and crushed into rough granules by the spiral blade 6a of the first screw part 6 and the fixed blade 9 of the stepped part 20 while being transferred, and then crushed into rough granules. Centrifugal force due to rotation is applied to the crushed material 4 that has entered the spiral groove of the screw part 6,
The material is raised up in the groove 20a of the stepped portion 20, further pressed and crushed into small pieces by the spiral blade 6a of the first screw portion 6 and the fixed blade 10, and then transferred to the next stage.

Next, a centrifugal force is applied to the pulverized material 4 that has entered the spiral groove of the second screw part 7 to make it stand up in the groove part 21a of the step part 21, and the helical blade 7a of the second screw part 7 and the step After being pressed and further crushed into smaller pieces by the fixed blade 11 of the section 22, the pieces are transferred to the next stage.

Further, a centrifugal force is applied to the crushed material 4 that has entered the spiral groove of the third screw part 8 to make it stand up in the groove part 22a of the step part 22, and the spiral blade 8a of the third screw part 8 and the step part After pulverizing by pressing with a fixed blade 22b provided at the rear inner edge of the granules 22, the pulverized granules 4 are discharged from the discharge port 2b and stored in the lower tray 13.

Since the pulverized material 4 is crushed by pushing it all the way through, there is no impact during cutting and the noise during pulverization is quiet.Furthermore, the pulverized material 4 is sequentially finely pulverized while being forcibly transferred. The pulverized material 4 can be pulverized all at once into granules of a predetermined size, and when reused, the granules can be uniformly mixed with the raw material.

Furthermore, the main body of the crusher 1 is only large enough to insert the rotary screw 5, and at the same time, the drive mechanism can be simplified. In addition, since the crushed material 4 is forcibly transferred by the rotary screw 5, Even if the crusher 1 is configured vertically, the crushing function is not impaired, and the crushed material 4
The transportation of the powder is constant and stable pulverization is possible.

In the above embodiment, the rotating screw 5 is configured in three stages, but by configuring the rotating screw 5 in multiple stages of four or five stages, the crushed particles of the crushed material 4 can be further atomized. .

In addition, the above-mentioned crusher 1 is configured for rough finishing,
A conventional pulverizer 23 is installed in the next stage, and the pulverized material 4 is
may be pulverized into granules, and the invention is not limited to the configuration of the above-described embodiment.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention, in which FIG. 1 is a longitudinal sectional side view of a pulverizer, FIG. 2 is a perspective view of the pulverizer, and FIG. 3 is a longitudinal sectional side view of a conventional pulverizer. DESCRIPTION OF SYMBOLS 1...Crusher, 2...Crushing chamber, 2a...Inlet, 2b...Outlet, 4...Crushed material, 5...Rotating screw, 6, 7, 8...Screw part, 9, 1
0, 11, 22b...Fixed blade.

Claims (1)

[Claim for Utility Model Registration] A rotary screw is inserted into a cylindrical crushing chamber having an input port at one end and a discharge port at the other end, and the spiral groove width of the rotary screw is gradually narrowed in the conveying direction. A pulverizer that is constructed by arranging multiple stages of screw parts each having a shallow spiral groove depth, and each screw part is provided with a fixed blade of a corresponding shape.