JP2620192B2 - Granular raw material supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular raw material supply apparatus, and more particularly, to a granular raw material supply apparatus for smoothly supplying a granular raw material such as a color which is soft and sticks easily due to static electricity or the like.

[0002]

2. Description of the Related Art As a system for supplying granular raw materials, a system comprising a cylindrical body provided with a raw material hopper or the like and a screw rotating in the cylindrical body is generally known.

However, with such a structure, when applied to a granular material such as a color which is very soft and easily sticks due to static electricity or the like, first, the granules solidify due to static electricity in the hopper and fall smoothly into the cylinder. If the screw does not fall or falls, it is crushed in the cylinder due to the rotation of the screw and becomes viscous, making it difficult to cut, and sticking to the screw or the inner wall of the cylinder.

[0004] When a color is blended with a molding material in extrusion molding or the like, the weight of one color particle is very small, and the finished state of the product (particularly the color density) is greatly affected by one particle of the raw material. First, it is necessary to accurately measure and supply, but if the color is supplied with the above configuration, it is not possible to always add a predetermined amount of color, especially in the case of molding with a small extrusion amount In addition, variations in the amount of added color are directly reflected on the molded product, resulting in unevenness in the finished product.

On the other hand, the applicant of the present application has previously filed an application for a raw material feeder which can be directly attached to an extruder or the like or can be mounted laterally on a raw material supply hopper (Japanese Patent Application No. Hei.
207306), however, the present invention is based on this structure, and further improved the structure so that the material can always be supplied smoothly.

[0006]

SUMMARY OF THE INVENTION According to the present invention, it is possible to accurately and smoothly supply granular raw materials which are very soft and easily stick to each other due to static electricity or the like by a predetermined amount, and efficiently mix mixed raw materials having different specific gravities. An object of the present invention is to provide a granular raw material supply device that can supply the raw material.

[0007]

Thus, according to the invention of claim 1 of the present application, there is provided an apparatus for supplying a granular raw material, the apparatus comprising: [a] a cylindrical inner peripheral surface (21); (22) is sealed and the other end (23) is open and has a bottomed cylindrical shape, and the raw material supply port (2) is provided at or near the sealed end (22).
And (b) an open end (2 ) from at least the raw material supply port (24) of the outer cylindrical body (2).
3) A coil spring-like coil that is in contact with or close to the cylindrical inner peripheral surface (21) up to the vicinity and that is rotatably arranged around the central axis of the cylinder and through which at least the granular material (M) can pass.
A spiral body (31B) having a pitch (tb1), [c]
It is connected to the tip of the spiral (31B) and rotates around the center axis of the cylinder.
Connecting part with the spiral body (31B)
The diameter from (P) toward the open end (23) of the outer cylinder (2) is
It is set to be gradually smaller and the tip is the open end (23) or
Form a delivery port (33B) at a slightly more protruding position
It is composed of a substantially conical hollow body, and its inner wall
To transfer the granular material (M) to the outlet (33B)
Raw material delivery section (32) provided with
B) and [d] penetrating through the sealed end (22) of the outer cylinder (2).
And connected to the spiral (31B) through the spiral (3B).
1B) and a driving means (4) for rotationally driving
Granular material supply device (1B) "is provided. Is provided.

[0008] In the granular raw material supply device (1B) of the present invention, the outer cylinder (2) may be any one as long as it has a cylindrical shape with a bottom and a cylindrical inner peripheral surface (21). . A raw material supply port (24) is provided at or near the sealed end (22) of the outer cylinder (2). The open end (23) of the outer cylinder (2) can be laid sideways on, for example, a raw material input hopper (15) or its leg (15a) which is usually attached to a known extruder (11) or the like. Is preferred. Further, the outer cylinder (2) has an air vent hole ( 25 ).
Is preferably provided as appropriate.

A coil spring-shaped spiral body (31B) is provided inside the outer cylindrical body (2) at least in a range from the raw material supply port (24) to the vicinity of the open end (23). This coil spring configuration has a coil pitch (tb1) through which at least the granular raw material (M) can pass.
It is configured as follows. The spiral body (31B) is an outer cylinder
(2) A core that contacts or approaches the cylindrical inner peripheral surface (21).
It is formed to have an il diameter. In addition, the spiral body
(31B) is provided so as to rotate around the central axis of the cylinder.

[0010] Feeding material used in the apparatus (1B) of the present invention
The protruding portion (32B) has a generally frustoconical bottom and upper surface.
The part corresponding to is a hollow body that is open and corresponds to the bottom.
The tip of the spiral body (31B) is connected to the
The corresponding part is the outlet (33B). Also approximately truncated cone
The portion corresponding to the side peripheral surface of the shape leaks the granular material (M).
Is constructed so that its inner surface is
A spiral groove for transferring the raw material (M) to the outlet (33B)
(34B) is provided.

[0011] The raw material delivery section (32B) is provided with the spiral body.
Although it may be configured separately from (31B),
As described later, a coil bar constituting the spiral body (31B)
It may be formed continuously by extending the thread. this
In this case, the coil pitch (tb2)
Is so dense that it does not leak the granular material (M),
A spiral groove (34B) based on the winding of a coil spring on the inner wall
Is already formed, and in this regard, the integrated configuration is favorable.
Preferably, but not limited to.

The raw material delivery section (32B) is provided at the tip thereof.
The delivery port (33B) is connected to the open end (2) of the outer cylinder (2).
3) Set so that it is at or slightly protruding from it
It is.

The driving means (4) rotates at a predetermined speed.
It is preferable that the control can be performed as described above.
Can be used as it is.

The present invention also relates to a granular material having a more preferable constitution.
As the material supply device, the one described in the “claim 2” of the present application is cited.
Can be In this granular material supply device (1C)
In addition, the outer cylinder (2C) houses the raw material delivery section (32C)
The diameter of the part to be enlarged is enlarged, so-called two different diameters
The center axes of the cylindrical inner peripheral surfaces (21a) and (21b) coincide with each other.
It is like a connection, and a step (2
1c). And raw material delivery
The part (32C) is a connection part with the spiral body (31C) and its connection part.
The vicinity is on the cylindrical inner peripheral surface (21b) having the enlarged diameter.
It is set to a diameter that is in contact or close proximity. This allows the raw materials
The spiral side of the sending section (32C) is the same as that of the spiral body (31C).
Larger than the il diameter and carried by a spiral (31C)
The raw material delivery section (32C) is hollow because the granular material
It will be accepted by the body.

[0015] The granular material supply apparatus (1C) having the above configuration.
The open end (23) of the outer cylinder (2C) is
Raw material input hopper usually mounted on the delivery machine (11)
(15) or a structure that can be laid on its legs (15a), etc.
It is preferable that

The granular raw material supply device (1B) of the present invention (1B)
In C), the spirals (31B) and (31C) and the raw material
The projecting portions (32A) and (32B) are described in claim 3 of the present application.
So that the wire is wound and configured as one
The part (32A) (32B) is smaller than the minimum diameter of the granular material (M).
Adjusted to the lower coil pitch ”is a simple configuration.
This is preferred in that

The granular raw material supply apparatus (1B) of the present invention
(1C) is soft and electrostatic like color
Limited to supply of granular materials that are more likely to stick together
Suitable for mixing and supplying granular mixed raw materials with different specific gravity
Used for

[0018]

According to the invention of claim 1 of the present application, the raw material
The granular raw material (M) supplied from the supply port (24)
Coarse coil pitch (t) of the spring-like spiral (31B)
Through b1) to the cylindrical inner peripheral surface (21) of the outer cylinder (2)
Fall there Be stacked. The spiral body (31B) is a driving hand.
The spiral (31B) is rotated by the step (4).
The formed coil wire is in contact with or near the cylindrical inner peripheral surface (21).
Moves at an interval toward the open end (23) while touching
The bottom of the accumulated granular material (M) or
These coil wires will pass through the inside sequentially.
You. This thin coil wire crosses the granular material (M) diagonally.
As a result, the granular raw material (M) is not
Open ends (23) gradually as the sticks are separated
It will be carried toward. Near open end (23)
The granular raw material (M) transported to the side is transported later
The hollow raw material delivery section (32) depends on the incoming granular raw material (M).
B). This raw material delivery section (32B) is also a spiral
(31B) is rotated together with the granules sent inside
The raw material (M) is rolled in a substantially frustoconical raw material delivery section (32B).
And is prevented from hardening into a dumpling again. Ma
In addition, the raw material delivery section (32B) is formed in a substantially frustoconical shape.
So the outlet at the tip (33B) is higher
The granular raw material (M) stored while rolling
It does not spill out. And the granular raw material (M)
Is provided on the inner wall of the raw material delivery section (32B) while rolling.
To the outlet (33B) along the spiral groove (34B)
From the outlet (33B)
It will be dropped in a state.

According to the invention of claim 2 of the present application,
The outer cylinder (2C) is a section for accommodating the raw material delivery section (32C).
The raw material delivery section (32C) has a screw
The connection with the rotating body (31C) and the vicinity thereof are enlarged as described above.
Diameter in contact with or close to the cylindrical inner peripheral surface (21b)
Is set to
The granular raw material (M) has a larger diameter than its inner diameter.
Because the feeder (32C) is open,
You will be pushed out smoothly and you will be depressed. This field
The feeder (32C) has a hollow body volume due to the enlarged diameter.
And the granular raw material (M) can be sufficiently stored.
it can. The granular raw material (M) in the raw material delivery section (32C) is
As described above, the spiral groove provided on the inner wall while being rolled
(34C ) is sent to the outlet (33C) sequentially.
The granular raw material (M) is individually separated from the outlet (33C).
It will be dropped in a rough state.

According to the invention of claim 3 of the present application,
Spiral (31B) (31C) and raw material delivery section (32B)
(32C) and a single wire
(31B) and (31C) are the components through which the granular material (M) can pass.
Il pitch (tb1) (tc1)
(32B) and (32C) are smaller than the minimum diameter of the granular material (M).
Wound so as to have coil pitch (tb2) (tc2)
The raw material delivery section (32B) (32
In C), the coil pitch (tb2) (tc2) is a spiral
The grooves (34B) and (34C) are also used.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
However, this does not limit the present invention. Embodiment 1 FIG. 1 shows the invention according to claim 1 or claim 3 of the present application.
FIG. 2 is a schematic cross-sectional view of a main part of an example of a granular raw material supply device. This
The granular raw material supply device (1B) includes an outer cylinder (2)
A rotating coil (3B) disposed in the outer cylinder (2);
A motor for rotating coil the (3B) rotatably driven and (4)
Mainly consisting of The outer cylinder (2) is
It has a cylindrical inner peripheral surface (21) of similar diameter, and one end (22)
Sealed made from another end (23) bottomed cylindrical which is opened,
The cylindrical body has a raw material supply port (2) near the sealing end (22).
4) is provided, and an air vent hole is provided at an appropriate position on the body.
(25) is provided. In the above raw material supply port (24)
Is attached to the raw material hopper (26).

The rotary coil (3B) is provided with the outer cylinder (2)
Slightly protrudes from the open end (23) from near the sealed end (22) of the
It is arranged to the position where it did. This rotating coil (3B)
Is closer to the open end (23) from the sealing end (22) (P in FIG.
(31B) up to the position indicated by ()
And the coil head (3) from the P portion to the open end (23).
2B). Coil body (31B)
Has a coil diameter on the cylindrical inner peripheral surface (21) of the outer cylinder (2).
The size is fixed so that it touches,
The wire is wound so that the switch has a coarse gap (tb1).
To form a coil spring-shaped spiral. Ko
The coil head has a coil diameter toward the tip of the head.
Make sure that the wires are
Are wound into a generally frustoconical hollow body as a whole.
This constitutes a raw material delivery section. This coil head
The tip of (32B) is opened with a minimum coil diameter.
And forms a delivery port (33B). Also this
At the coil head (32B), the side peripheral surface of the substantially frustoconical shape is
On the inner surface of the corresponding part, as shown in FIG.
There is no gap between the pitches (tb2), and
Spiral groove continuing spirally to the outlet (33B)
(34B) is constituted.

The motor (4) has a rotating shaft (41)
Penetrating the sealed end (22) of the outer cylinder (2)
(2) are arranged on the central axis of the cylinder,
The end of the rotating coil (3B) is attached to the rotating shaft (41).
Is installed.

The granular raw material supply device (1B) having the above configuration
The operation will be described with reference to FIGS. The above device (1
In B), the granular material supplied from the raw material hopper (26)
The raw material (M) is a coil of the rotating rotary coil (3B).
Through the coil gap (tb1) of the main body (31B)
It falls on the cylindrical inner peripheral surface (21) of the cylindrical body (2) and accumulates here.
Be stacked.

On the other hand, the rotary coil (3B) is a motor (4)
The main body of the coil (31B)
Is in contact with the cylindrical inner peripheral surface (21).
While moving toward the open end (23)
You.

The inside of a moving cylinder of such a wire
The granular material (M) accumulates on the peripheral surface (21) , and this accumulated
Wire passing through the granular material (M)
Where the wire passes through,
That even if they are attached to each other by their strength,
And as the wire passes, the granular material gradually
It is carried towards the open end (23).

As described above, P before the open end (23)
Brought to the position, ie, the coil head (32B) entrance
In the granular material (M), the inner wall of the coil head (32B) is substantially
Because of the upward slope of the truncated cone,
The feed is stopped and stored, but later
After being pressed by the granular material (M) coming out, the coil head
(32B).

This coil head (32B) is also a coil body.
(31B) is rotated integrally with the
The granular material (M) along the inner wall of the coil head (32B)
Rolled, preventing it from solidifying here as well.
You. While rolling, the spiral groove (3
4B) to the delivery exit (33B)
Granular raw materials (M) are individually scattered from the mouth (33B)
It is pushed out in a state and falls.

In the granular raw material supply device (1B) having the above structure,
Are soft and particle-like, such as color particles
Even when supplying raw materials that tend to stick together,
Can be distributed and supplied.

Embodiment 2 FIG. 4 shows the invention according to claim 2 or claim 3 of the present application.
FIG. 2 is a schematic cross-sectional view of a main part of an example of a granular raw material supply device. same
The granular raw material supply device (1C) shown in FIG.
The same as in Example 1 except that the
It has a basic configuration, and this basic configuration
The same reference numerals as those in FIG. 1 denote the same parts, and a description thereof will be omitted.

The outer cylinder (2C) of this device (1C) has a diameter
The two cylindrical inner peripheral surfaces (21a) and (21b)
A cylindrical body connected so that the central axes coincide, and the small-diameter side cylindrical part (2
Ca) and the stepped portion (21
c) is formed, and the end of the small diameter side cylindrical portion (2Ca)
(22C) is sealed and the tip of the large-diameter side cylindrical portion (2Cb)
(23C) has an open bottomed cylindrical shape. Small diameter side
The cylindrical body of the cylindrical portion (2Ca) has a portion near the sealing end (22C).
A raw material supply port (24C) is provided beside it.
Air vent holes (25C) are formed at appropriate locations. What
A raw material hopper (26) is provided at the raw material supply port (24C).
Installed.

The rotary coil (3C) is connected to the outer cylinder (2).
In the vicinity of the sealed end (22C) of the small-diameter side cylindrical portion (2Ca) of C)
Slightly protruding from the open end (23C) of the large-diameter side cylindrical portion (2Cb).
It is arranged up to the position where it came out. This rotating coil (3
C) is a coil main body provided in the small diameter side cylindrical portion (2Ca).
Provided in the body part (31C) and the large-diameter side cylinder part (2Cb).
Coil head (32C). coil
The main body (31C) has a small-diameter coil portion (2Ca) in the coil diameter.
Of a size such that it contacts the cylindrical inner peripheral surface (21a) of
And the coil pitch (tc1) is
So that there is a gap through which the raw material (M) can sufficiently pass.
The ears are wound to form a coil spring-like spiral
ing. For the coil head (32C), the coil diameter is
Gradually smaller toward the coil pitch (tc2)
Is a wire with a gap smaller than the minimum diameter of the granular material (M)
Wound into a generally frustoconical hollow body as a whole
Thus, a raw material delivery section is configured. This coil head (3
The base part of 2C) is the circle of the large-diameter side cylindrical part (2Cb) with the coil diameter.
A small-diameter side cylinder that is large enough to contact the cylindrical inner peripheral surface (21b).
Larger than the diameter of the cylindrical inner peripheral surface (21a) of the portion (2Ca)
It's getting worse. The tip of the coil head (32C)
The coil is opened with the minimum coil diameter, and the outlet (33
C). Further, the coil head (32
In the part corresponding to the side peripheral surface of the substantially truncated cone in C),
Helical groove (34C) is formed by coil pitch (tc2)
Have been.

The granular raw material supply device (1C) having the above configuration
The operation will be described with reference to FIGS. The above device
In (1C), it is supplied from a raw material hopper (26).
The granular material (M) is made of the rotating coil (3C).
Through the coil gap (tc1) of the coil body (31C)
To the cylindrical inner peripheral surface (21a) of the small diameter side cylindrical portion (2Ca).
And accumulate here.

On the other hand, the rotating coil (3C) is a motor (4)
The coil body (31C)
Of the wire that makes up the inner peripheral surface (21a)
While moving toward the open end (23C)
ing.

The inside of a moving cylinder of such a wire
The granular material (M) accumulates on the peripheral surface (21a), and this accumulation
Wire passes through the granular material (M)
It is as if the particle population was cut by a wire.
The wires are moved apart and the wires pass
Can be separated from each other by
And In addition, the granular raw material
(M) is gradually carried toward the open end (23C).
Good.

As described above, the small diameter side cylindrical portion (2Ca)
Carry to the connection step (21c) with the large diameter side cylinder (2Cb)
The granular material (M) that has been taken
Pressed by the granular raw material (M) that is transported from behind
(21c) and fall smoothly from the coil head (32
C).

The coil head (32C) is also a coil main body.
(31C) is rotated integrally with the
The granular raw material (M) is placed on the coil pick (32C).
(C) rolling along the spiral groove (34C).
Here, too, while being prevented from hardening into a dumpling,
It is carried to the exit (33C) and from this outlet (33C)
Granular raw materials (M) are extruded individually
Will be dropped.

In the granular raw material supply apparatus (1C) having the above-mentioned structure,
Are soft and particle-like, such as color particles
Even when supplying raw materials that tend to stick together,
Can be distributed and supplied. Also, the coil body
(31C) and the coil head (32C)
Since the diameter of the coil has been expanded, the coil body (31C)
Smooth carp without stepping on the more conveyed granular materials
Can be transferred into the head, thus accumulating in this area
Good adhesion of granular raw materials can be avoided and smoother
And can be supplied separately.

Example 3 In this example, the granular raw material supply device (1B) of Example 1 was replaced with an extruder.
This is an example applied to (11), and is a schematic cross-sectional view of a main part thereof.
6 is shown. In the figure, an extruder (11) is provided with a heating means.
(Not shown), a known extrusion cylinder (12),
Outgoing screw (13) and known screw drive (14)
It is provided with. The extruder (11) has a die.
The chair part is omitted. In the extrusion cylinder (12),
A well-known material input hopper (15) is attached.
Of the hopper (15) of Example 1
Open end (23) of outer cylinder (2) of raw material supply device (1B)
Is laid down. In this configuration, the rotating coil
The tip of (3B) projects slightly into the hopper leg (15a)
doing.

In this extruder (11), a predetermined component
The raw material (L) is extruded from the raw material charging hopper (15) into the extrusion cylinder (1).
Extrusion molding is recommended after being supplied to 2).
In the process of supplying the raw material (L), granular raw material (M) such as color
Is arbitrarily added in the granular raw material supply device (1B).
Swelling.

With the above configuration, the granular material supply device (1)
The color particles (M) supplied in B) are particles
As described above, the raw materials
To be added to the legs (15a) of the hopper (15).
Supply of the color particles (M) to the molding raw material (L)
Thus, it can be adjusted and maintained at a predetermined ratio. Also,
In the leg (15a), the outlet (33B) slightly protrudes.
Color particles (M) are
(L) is mixed and supplied inside,
Mixing will also be achieved. In addition, these
Thus, an extruded product having a uniform quality can be produced.

Embodiment 4 In this embodiment, the granular raw material supply device (1C) of Embodiment 2 is used.
This is an example applied to the same extruder (11) as in Example 3,
FIG. 7 is a schematic cross-sectional view of a main part. The numbers in the figure
Are the same for the same components as in the previous embodiment.
They are numbered and therefore need not be described here.
Abbreviate.

In the configuration shown in FIG.
(1C) disperses color particles very smoothly and
Strictly control the supply amount (number)
The degree of color mixing during extrusion molding can be
Can be more homogenized and greatly improve product quality
Can be made.

[0044]

【The invention's effect】 According to the granular raw material supply device of the present invention,
Even particles that are easy and stick to
It can be supplied in a state. Also, by adjusting the rotation speed
Thus, the granular raw materials can be supplied one by one. Obedience
Therefore, the finish depends on the increase / decrease of one granular raw material
Strict control of the supply of delicate granular materials such as
it can. Further, the granular raw material supply device of the present invention can
It can be easily laid sideways on the material supply flow path of the output machine. This
Supply of granular raw materials such as collars to
You can control the payout ratio accurately,
Quality can be improved with very high accuracy.

[Brief description of the drawings]

[1] The present example fragmentary cross-sectional schematic view of the particulate material supplying apparatus according to "claim 1" or "3."

FIG. 2 is a schematic view of an inner surface of a coil head of the apparatus of FIG.

FIG. 3 is a schematic cross-sectional view of a main part explaining the operation of the apparatus of FIG . 1;

FIG. 4 is a grain according to claim 2 or claim 3 of the present application .
Schematic cross-sectional view of an essential part of an example of a raw material supply device

FIG. 5 is a schematic cross-sectional view of an essential part for explaining the operation of the apparatus shown in FIG . 4;

FIG. 6 is a particle according to claim 1 or claim 3 of the present application .
Of the main section of an extruder equipped with an example of a raw material supply device
Figure

FIG. 7 is a particle according to claim 2 or claim 3 of the present application .
Of the main section of an extruder equipped with an example of a raw material supply device
Figure

[Description of Signs] (1B), (1C) ... Granular raw material supply device (2),
(2C) ... outer cylinder (3B), (3C) ... rotating coil (4) ... motor (2Ca) ... small-diameter side cylinder (2Cb)
… Large-diameter cylindrical part (21), (21a), (21b)… Cylinder inner peripheral surface (22), (22C)… Raw material supply port (25), (25C)… Air vent hole (26)…
Raw material hopper (31B), (31C) ... coil body (32B), (32C) ... coil head (33B), (33C) ... outlet (34 )
B), (34C) ... spiral groove (11) ... extruder (12) ...
Extrusion cylinder (13) ... Extrusion screw (14) ...
Screw drive unit (15): Material input hopper (15a)
… Hopper leg

Claims (3)

(57) [Claims] 1. A device for supplying a granular raw material, comprising: (a) a bottomed cylindrical shape having a cylindrical inner peripheral surface, one end of which is sealed and the other end of which is open, and a sealed end or a sealed end thereof. An outer cylindrical body having a raw material supply port provided in the vicinity thereof; and (b) a cylindrical inner peripheral surface at least from the raw material supply port to the vicinity of the open end of the outer cylindrical body, being rotatable about a cylindrical central axis. (C) a spiral connected to the tip of the spiral and rotatably provided around the central axis of the cylinder, and connected to the spiral. The diameter is set to gradually decrease toward the open end of the outer cylinder from the open end, or the end is formed into a substantially frustoconical hollow body forming a feed port at a position slightly protruding from the open end or the inner wall thereof. A spiral groove is provided to transfer the granular material to the outlet with rotation A granular raw material supply device, comprising: a raw material delivery section; and (d) a driving means connected to the spiral body through the sealed end of the outer cylinder and rotationally driving the spiral body. 2. The outer cylinder body has an enlarged diameter of a portion for accommodating the raw material delivery portion, and the raw material delivery portion has a cylindrical inner periphery having the enlarged diameter at a portion connected to the spiral and in the vicinity thereof. particulate material supplying apparatus according to claim 1, wherein comprising set radially in contact with or close to the surface. 3. A spiral and the raw material delivery section is constructed integrally by winding a wire, raw material delivery section, any minimum diameter is adjusted to the following coil pitch comprising according to claim 1 or 2 particulate material The granular raw material supply device as described in the above.