JPH079423A - Clay extruder - Google Patents

Abstract

(57) [Summary] [Purpose] The homogeneity of the clay extruded from the tip of the screw is adjusted by the type of screw assembly. [Structure] A screw in a kneading machine is constituted by a delivery screw member, and a tip screw member having two spiral blades and detachably attached to a mounting shaft 14 having a polygonal cross section at the tip of the delivery screw member, By simply inserting the tip screw member into the mounting shaft 14 and fixing the tip screw member to the mounting shaft 14 so as not to rotate, by making it possible to adjust the mounting angle of the screw member with respect to the mounting shaft 14, The position of the tip screw member is adjusted according to the properties and amount of clay and the extrusion output of the clay kneader to adjust the amount of clay extruded from the tip of the screw.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clay kneader in which the homogeneity of clay extruded from the tip of a screw can be adjusted by the type of screw assembly.

[0002]

2. Description of the Related Art Conventionally, a screw b of a kneading machine a has only two tips only at its tip, and one spiral blade c is continuously formed from the base end to the tip of the screw b and the other spiral blade d. Is formed so as to surround about 180 degrees, and the screw b has two extruded portions e and f of clay,
There is a difference between the amount of clay extruded from the extruded part e on the terminal end side of the continuously formed spiral blade c and the amount of clay extruded from one extruded part f, and the amount of clay extruded from both extruded parts e and f is uniform. However, since clay is extruded from the spinneret g in a non-homogeneous manner, there is a drawback that the molded product is distorted during subsequent drying and firing.

[0003]

DISCLOSURE OF THE INVENTION The present invention does not provide a clay kneader capable of adjusting the homogeneity of clay extruded from the tip of a screw by adjusting the posture of the screw member at the tip of the screw. It is what

[0004]

According to the present invention, in view of the problem that the amount of clay extruded from each of the two extruding portions of the screw tip based on the above-mentioned conventional technique is not uniform, the screw in the kneading machine is used as a delivery screw member. A distal end screw member detachably attached to the distal end portion of the delivery screw member, a mounting shaft having a polygonal cross section is provided at the distal end portion of the delivery screw member, and a mounting hole corresponding to the mounting shaft is formed in the distal screw member. By installing and simply inserting the tip screw member into the mounting shaft, the tip screw member is fixed so as not to rotate with respect to the mounting shaft, and the mounting angle of the screw member with respect to the mounting shaft can be adjusted. Adjust the position of the tip screw member according to the properties and amount of In the manner to adjust the clay amount extruded from-menu tip, it is obtained by eliminating cents above drawbacks.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a main body of a clay kneading machine according to the present invention. ) And a base 4 is attached to the tip of the body 2 to form the main body 1. The screw 3 occupies most of the portion of the delivery screw member 5 and the intermediate screw member 6 Also, the tip screw member 7 is detachably mounted, and the delivery screw member 5 is continuously formed with a single spiral blade 8 from its base end portion to its tip portion.

The intermediate screw member 6 has one spiral blade 9 and the tip screw member 7 has two spiral blades 10 and 10a.
Are respectively provided so as to surround about 180 degrees, one spiral blade 10a of the tip screw member 7 is provided at the symmetrical position (180 degree displacement position) with respect to the other spiral blade 10, and the spiral blades 10 and 10a of the tip screw member 7 are provided. The extruding part 11 at the end side of
11a, and the base end edges 12, 13, 13a of the spiral blade 9 and the spiral blades 10, 10a are respectively knife-edge shaped.

The spiral blade 8 of the delivery screw member 5,
The inclination angles of the spiral blade 9 of the intermediate screw member 6 and the spiral blades 10 and 10a of the tip screw member 7 are the same, and the angle is not limited at all but is preferably about 14 degrees.

Reference numeral 14 denotes a mounting shaft which penetrates the intermediate screw member 6 and the distal screw member 7, and the mounting shaft 14 is provided at the center of the distal end portion of the delivery screw member 5 and on the coaxial line, and penetrates the intermediate screw member 6. Is composed of a polygonal shaft 15 having a regular polygonal cross-section that reaches an intermediate position of the tip screw member 7, and a mounting rod 16 provided at the center of the tip of the polygonal shaft 15 and protruding from the tip of the tip screw member 7. .

On the other hand, mounting holes 17 and 18 are provided through corresponding portions of the mounting shaft 14 in the intermediate screw member 6 and the tip screw member 7, respectively, and the mounting hole 17 of the intermediate screw member 6 corresponds to the polygonal shaft 15. The hole is a polygonal hole, and the mounting hole 18 of the tip screw member 7 is a regular polygonal hole corresponding to the polygonal shaft 15 up to the middle part thereof, and the mounting screw rod 16 can be inserted from the middle part to the tip part. As
The intermediate screw member 6 and the tip screw member 7 are detachable from the mounting shaft 14.

Reference numeral 19 is a retaining nut, and the retaining nut 19 is screwed into the tip end portion of the mounting screw rod 16 to form the intermediate screw member 6.
And the tip screw member 7 is tightened and integrated to form the screw 3, and in this state, there is a gap between the terminal end side of the spiral blade 9 of the intermediate screw member 6 and the spiral blades 10 and 10a of the tip screw member 7. The part 20 is formed.

Although the polygonal shaft 15 has a hexagonal cross section in the drawing, it is not limited to such a shape, and the mounting posture of the tip screw member 7 increases proportionally as the number of angles increases.

Next, the operation of the kneading machine according to the present invention will be described. First, as shown in FIGS. 1 to 4, one of the tip screw members 7 is extended on the extension of the spiral blade 9 of the intermediate screw member 6. When the tip screw member 7 is attached to the mounting shaft 14 so that the spiral blade 10 of FIG. To explain, by rotating the screw 3 and pressure-feeding by the pressing surface on the tip side of the spiral blade 8 of the delivery screw member 5,
Clay mainstream A sent to the tip side of the delivery screw member 5
Is sent between the spiral blade 8 and one spiral blade 10 as it is, and when it reaches the base end edge portion 13a of the other spiral blade 10a, it is divided into a tributary A1 and a tributary B by the spiral blade 10a, and one tributary B is pushed by the spiral blade 10a and pushed out as it is from the extruding portion 11a, and the other tributary A1 is sent between the spiral blades 8 and 9 and the spiral blade 10a and the spiral blade 10a.
It is pushed by and is pushed out from the pushing part 11.

In this case, comparing the tributary A1 sent between the spiral blade 8 and the spiral blade 10a with the tributary B extruded between the spiral blade 10a and the spiral blade 10, the tributary A1 is the spiral blade 8 and the spiral blade 10a. The flow of the tributary B is improved because the resistance is increased due to the large amount of flow, and as a result, the amount of clay in the tributary B, that is, the amount of clay extruded from the extruding part 11a, is larger than that of the tributary A1. The amount of clay, that is, the amount of clay extruded from the extruding section 11 decreases.

Secondly, as shown in FIGS. 5 to 8, when the tip screw member 7 is mounted on the mounting shaft 14 by shifting the tip screw member 60 from the above state, a vertical cut is made at a predetermined position of the screw 3. This will be described in detail with reference to FIG. 7 showing a state of being developed in a plane. The main stream A of clay sent to the tip side of the delivery screw member 5 and a tributary A2, which will be described later, merge to form a base edge portion 13a of the spiral blade 10a. When the spiral blade 10a is divided into the tributary A1 and the tributary B, one of the tributaries B is pushed by the spiral blade 10a and pushed out from the extruding portion 11a as it is, and the other tributary A1 is formed of the spiral blade 8 and the spiral blade.
10a is sent to reach the base edge portion 13 of one spiral blade 10, and is divided into a tributary A2 and a tributary B1 by the spiral blade 10. One tributary B1 is pressed by the spiral blade 10 and pushed out.
While being pushed out from 11 as it is, the other branch A2 passes through between the spiral blade 9 and the spiral blade 10 of the intermediate screw member 6 and merges with the main stream A.

In this case, since the space between the spiral blade 8 and the spiral blade 10a is wider than the space between the spiral blade 10a and the spiral blade 10, the tributary
The flow of clay in A1 is good, and the space between the spiral blade 8 and the spiral blade 10 is narrow, so the flow of the tributary A2 is poor, and the tributary is that much.
Screw 3 in the first case so that it flows well to the B1 side
In comparison with the above, the amount of clay in the tributary B, that is, the amount of clay extruded from the extruding section 11a and the amount of clay in the tributary B1, that is, the amount of clay extruding from the extruding section 11, are increased or decreased.

Thirdly, as shown in FIGS. 9 to 12, when the tip screw member 7 is further shifted by 60 degrees and mounted on the mounting shaft 14, a vertical cut is made at a predetermined position of the screw 3 so as to be planar. The detailed description will be given with reference to FIG. 11 showing the state in which the clay is extruded. The clay is extruded from both the extruding portions 11 and 11a by following the same process as above, but in this case, the space between the spiral blade 8 and the spiral blade 10a is further increased. By expanding, the flow of clay in the tributary A1 becomes better, and since the space between the spiral blades 8 and 10 expands, the flow of the tributary A2 becomes good,
Between the spiral blade 9 and the spiral blade 10, the spiral blade 10 and the spiral blade 10
Since the distance a is slightly wide, the amount of clay in the tributary B, that is, the amount of clay extruded from the extruding portion 11a and the clay in the tributary B1 are made to flow well toward the tributary B1 side compared to the screw 3 in the second case. The amount, that is, the amount of clay extruded from the extruding section 11 is increased or decreased, respectively.

The amount of clay extruded varies depending on the nature and amount of clay and the extrusion output of the main body 1. Therefore, the mounting angle of the tip screw member 7 is adjusted to perform a trial run, and the extruding section 11, The amount of clay extruded from 11a is made uniform.

[0018]

In summary, according to the present invention, in a clay extruder for extruding clay, the screw 3 for feeding clay can be divided into a feeding screw member 5 and a tip screw member 7, and the feeding screw member 5 is one spiral. The blade 8 is continuously formed, while the tip screw member 7 has two spiral blades 10,
10a, the other spiral blade 10a is provided symmetrically with respect to one spiral blade 10, and the tip screw member 7
A mounting shaft 14 having a polygonal cross-section that penetrates through is formed integrally with the distal end portion of the delivery screw member 5, while the mounting shaft 14
Since the mounting hole 18 corresponding to the above is provided in the tip screw member 7, the mounting angle of the tip screw member 7 is adjusted to correspond to the non-uniformity of the amount of clay extruded from the tip of the screw 3 which varies depending on the nature and amount of clay and the extrusion output. The amount of clay fed by the screw 3 can be changed by the tip screw member 7 or combined with the tip screw member 7. Therefore, if the tip screw member 7 is positioned so as to meet the conditions, the tip portion of the screw 3 can be changed. It is possible to make the amount of clay extruded from the mold uniform, and thus to prevent distortion of the molded product due to inhomogeneity of the extruded clay.

Since the tip screw member 7 can be finely adjusted in proportion to the number of angles of the mounting shaft 14, the fine adjustment of the amount of clay extruded from the tip of the screw 3 can be performed in multiple stages. Further, since the tip screw member 7 can be fixed to the attachment shaft 14 only by being inserted and fitted so as not to rotate, the tip screw member 7
That is, the attachment and detachment work can be facilitated, which is a great practical effect.

[Brief description of drawings]

FIG. 1 is a sectional view of a clay extruder according to the present invention.

2 is a perspective view of a screw in the clay kneader of FIG. 1. FIG.

FIG. 3 is a schematic development view illustrating the flow of clay in the screw of FIG.

FIG. 4 is an enlarged cross-sectional view of a main part of X1-X1 in FIG.

FIG. 5 is a cross-sectional view of a clay kneading machine in which a double-threaded screw member is displaced and attached.

6 is a perspective view of a screw in the clay kneader of FIG. 5. FIG.

FIG. 7 is a schematic development view illustrating the flow of clay in the screw of FIG.

8 is an enlarged cross-sectional view of a main part of X2-X2 in FIG.

FIG. 9 is a cross-sectional view of the clay kneader in which the double-threaded screw member is further displaced and mounted.

10 is a perspective view of a screw in the clay kneader of FIG. 9. FIG.

11 is a schematic development view illustrating a flow of clay in the screw of FIG.

12 is an enlarged cross-sectional view of a main part of X3-X3 in FIG.

FIG. 13 is an exploded perspective view of a screw.

FIG. 14 is a front view of the same.

FIG. 15 is an enlarged sectional view taken along line XX of the above.

FIG. 16 is a sectional view of a conventional clay kneader.

[Explanation of symbols]

 5 Delivery screw member 7 Two-screw member 14 Mounting shaft 18 Mounting hole

Claims (1)

[Claims] 1. In a clay kneader for extruding clay, a screw for feeding clay can be divided into a feeding screw member and a tip screw member, and the feeding screw member is 1
One spiral blade has two spiral blades, one spiral blade has the other spiral blade at a symmetrical position, and the tip screw member has a polygonal cross section that penetrates the tip screw member. The kneading machine characterized in that the mounting shaft of (1) is integrally formed at the tip of the feed screw member, and the mounting hole corresponding to the mounting shaft is provided in the tip screw member.