JP3217272B2 - Kneading device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to, for example, a solder paste, a dental impression material, a fat, a resin, a dye, a pigment, a powder, a filler or the like, or a composite material of a molten resin and a powder or a filler, a short fiber or the like. The present invention relates to a kneading apparatus for performing stirring, kneading, and the like of a material having fluidity.

[0002]

2. Description of the Related Art A kneading container configured to revolve a kneading container containing a material to be kneaded, such as a solder paste or a dental impression material, around its axis parallel to the revolving axis while revolving around the orbit. The device is conventionally used. In this type of kneading apparatus, a centrifugal force acts on the material to be kneaded in the container by the revolution of the kneading container, and the material to be kneaded is pressed against the inner wall of the container by the centrifugal force. Air bubbles contained in the material are released to the outside, and the material to be kneaded in the container is stirred and kneaded by the rotation of the kneading container.

[0003] An apparatus for manufacturing a casting material disclosed in Japanese Patent Application Laid-Open No. 61-290946 is a planetary gear device in which a revolution shaft is driven by an electric motor and the driving force of the motor is provided on the revolution shaft. This is transmitted to a kneading container mounted on the tip of the rotating arm via the rotating arm, and the kneading container is configured to rotate.

In this kneading apparatus, since the rotation axis of the kneading vessel is inclined by about 45 ° to the revolving axis, the pressing force due to the centrifugal force acts on the inclined inner wall of the kneading vessel, and the component force of the pressing force is kneaded. It works below the inner wall of the container. Accordingly, the stirring and defoaming of the material to be kneaded are promoted in combination with the acting force by the rotation of the kneading container.

[0005] In addition, in an apparatus for mixing impression materials disclosed in Japanese Utility Model Publication No. 5-32110, a universal joint is connected to the tip of a revolving shaft driven by a belt from the outside, and the center of the shaft is set to about 4 mm.
Tilted at an angle of 5 °, and through a driven belt at the tip,
The cup holder rotatably supported at an angle of about 45 ° is configured to be driven to rotate.
The same operation as the kneading device shown in No. 6 can be obtained.

[0006] In the case where powder of a metal such as copper or silver is mixed into a binder of a resin liquid having a relatively high viscosity by using the above-described kneading apparatus, for example, even when the stirring is completed, the metal powder is mixed. The powder may condense on the bottom of the container.
This is thought to be due to the fact that the specific gravity of the binder and that of the metal powder are significantly different, and the centrifugal force of the revolution causes a strong centrifugal separation effect to cause such a phenomenon.

[0007]

Problems to be Solved by the Invention
In No. 0946 and No. 5-32110,
As a drive mechanism for revolving and rotating the kneading container,
The revolving force is extracted from one drive motor, and the kneading container attached to the rotating end of the rotating body is rotated from the revolving shaft via a planetary gear or a transmission belt.

However, in either case, the specific gravity of the materials to be kneaded is greatly different from each other, so that the centrifugal action that occurs cannot be prevented.

Accordingly, an object of the present invention is to efficiently mix and knead a fluid material to be kneaded in a kneading vessel and to knead a plurality of kinds of materials to be kneaded having different specific gravities. It is an object of the present invention to provide a kneading apparatus that can effectively perform kneading while preventing centrifugal separation.

[0010]

In order to achieve the above-mentioned object, the invention according to claim 1 is mounted on a substantially vertical revolving shaft.
Revolving around the axis of revolution provided on a rotating body
In both cases, the upper part of the axis is inclined toward the revolving axis with respect to the revolving axis.
A container holder that rotates around itself, and approximately coaxial with the container holder
And a kneading device having a cylindrical kneading container with a bottom.
And the rotating body has a central portion of an inner bottom surface of the kneading container.
From near to the edge of the inner bottom surface where the maximum centrifugal force due to revolution acts
The stirring blade extending along the inner bottom surface in the kneading vessel
Kneading apparatus characterized in that it can be taken in and out of
To provide .

[0011] According to the above configuration, the bubbles contained in the material to be kneaded mainly revolve due to the revolution and rotation of the kneading container.
It is discharged above the kneading vessel by the centrifugal force generated by the centrifugal force , and defoaming is performed extremely effectively .
Is performed effectively. In addition, the stirring blade is inserted into the revolving and rotating kneading container, and the stirring blade is inserted into the kneading container .
The inner bottom where the maximum centrifugal force due to revolution acts from near the center of the bottom
Because it extends along the inner bottom surface toward the surface peripheral end ,
Even when a plurality of types of kneaded materials having greatly different specific gravities are kneaded, they are collected on the bottom side of the kneading container by the action of the revolving centrifugal force.
A material having a large specific gravity can be forcibly stirred and kneaded by a stirring blade , and centrifugal separation of a non- mixed material can be prevented. Therefore, kneading can be uniformly performed as a whole.

According to a second aspect of the present invention, the rotating shaft is mounted on a substantially vertical revolving shaft.
Revolves around the axis of revolution provided on the attached rotating body
And an axis whose upper part is inclined toward the revolving axis with respect to the revolving axis.
A container holder that rotates around a line, and
Kneading apparatus having a bottomed cylindrical kneading container held on a shaft
In the above, the rotating body is provided with the revolution of the container holder and
Vertical movement along the axis of rotation of the container holder during rotation
Agitating blades that can be discharged into the kneading vessel
A kneading apparatus characterized by being provided so as to be capable of being inserted .

According to the above configuration , the stirring blade can be moved up and down along the rotation axis of the container holder in the revolving and rotating kneading vessel, so that the kneading is performed only by the conventional revolving and rotation. As compared with the action, the stirring and kneading effects can be further enhanced.

[0014] The invention according to claim 3, about a generally vertical revolution axis
And the upper part is inclined toward the revolving shaft with respect to the revolving shaft.
A container holder that rotates around an inclined axis,
Kneading device having a bottomed cylindrical kneading container held by
In the above kneading container, the cylindrical side wall portion has a container holder.
Are arranged substantially coaxially with the axis of rotation of the
Is inclined at a predetermined angle with respect to the rotation axis.
Is provided .

According to the above configuration, since the bottom of the kneading container is inclined with respect to the axis of rotation of the container holder, the kneading container held by the container holder rotates vertically, causing a vertical flow in the material to be kneaded. Thereby, the vector of the centrifugal force generated by the rotation and the revolution is partially changed to an upward vector by the inclined bottom surface of the container, and the flow becomes a convective flow. Therefore, since the kneaded materials can be effectively stirred and kneaded, even when mixing and kneading a plurality of types of kneaded materials having greatly different specific gravities, their centrifugal separation action is prevented. It can be uniformly kneaded. In addition, the cylindrical side wall of the kneading container is arranged substantially coaxially with the rotation axis.
So that the container holder that holds the kneading container can rotate
An unbalanced rotational load is applied to the supporting rotation support part
Can be prevented. Therefore, vibration noise and rotation
It is possible to prevent uneven uneven wear of the holding part and improve durability.
it can.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments included in the present invention will be described.

[0017]

1 to 3 show a first embodiment of the present invention. FIG. 1 is a schematic front sectional view showing an internal structure of a kneading apparatus, and FIG. 2 is a kneading container of the kneading apparatus. FIG. 3 is a front sectional view showing the mounting structure, and FIG. 3 is a perspective view of a main part showing a blade shape of the stirring blade.

Referring first to FIG. 1, the kneading apparatus has a main body container 1 and a support plate 2 elastically supported in the main body container 1 via a plurality of springs 1a. A revolving drive motor 3 is attached to a lower surface of the support plate 2, and a revolving shaft 3 a connected to a motor shaft of the revolving drive motor 3 protrudes and extends above the support plate 2. This substantially vertical revolution axis 3
The rotating body 4 is provided at the upper end of the section a. Although not shown, it is preferable that the revolution drive motor 3 is elastically supported on the bottom of the main body container 1 via a buffer member such as a vibration-proof rubber or an air damper (not shown). Further, it is preferable that the revolution drive motor 3 is composed of a servomotor.

The rotating body 4 is a revolving shaft 3a of the revolving drive motor 3.
Is fixed at an angle of approximately 45 ° and obliquely upward, and a cylindrical kneading vessel 5 with a bottom is provided on the centrifugal side of the rotating body 4.
Is provided. More specifically, in the illustrated embodiment, the rotation support shaft 7 is provided on the rotating body 4 at an angle of about 45 ° toward the axis of the revolving shaft 3a whose upper part is substantially perpendicular to the horizontal plane. The container holder 6 is rotatably attached to the rotation support shaft 7 via a bearing 7a. The kneading vessel 5 is not limited to a cylindrical one, and may be, for example, one having an elliptical cross section or a polygonal cross section. In the vicinity of the upper end of the revolving shaft 3a, a rotating drive motor 8 for rotating the kneading vessel 5 is attached to the rotating body 4. The rotation drive motor 8 is fixed downward at an oblique angle of 45 ° with respect to the rotating body 4 so as to be parallel to the container holder 6, and a pulley 8b is attached to a tip of the rotation drive shaft 8a. I have. The transmission belt 9 wound around the pulley 8b is
And is wound around a pulley portion 6 a provided integrally with the container holder 6.

A rubber sheet 6b is provided on the inner bottom of the container holder 6, and the kneading container 5 is held in the container holder 6 with the rubber sheet 6b joined to the bottom. The container holder 6 is provided with a holder roller 6c which is in contact with the lower outer peripheral surface of the kneading container 5, and the kneading container 5 is configured to be held substantially coaxially in the container holder 6 by the holder roller 6c. I have.

The rotating body 4 is provided with a stirring blade 10 inserted into the kneading vessel 5. As shown in FIG. 3, the stirring blade 10 is formed in a single blade shape and has a support rod 10.
It is fixed to the lower end of a and is configured to move up and down in the kneading container 5 that rotates. As clearly shown in FIG.
In addition, the stirring blade 10 is formed along the inner bottom surface of the kneading vessel 5 therein.
Peripheral edge of inner bottom surface where maximum centrifugal force due to revolution acts from near the center
Extending towards.

The vertical movement mechanism 11 of the stirring blade 10 is constructed, for example, as follows.

The lower frame 11a of the vertical movement mechanism 11 has a mounting portion extending above the rotation driving motor 8 of the rotating body 4.
The upper and lower drive motor 11b is attached to the lower part of the lower frame 11a. On the upper side of the lower frame 11a, a guide rail 11c that is inclined at about 45 ° parallel to the kneading container 5 is provided upright.
An upper frame 11d is connected to the upper end of the frame c.

A feed screw 11e parallel to the guide rail 11c is rotatably supported between the lower frame 11a and the upper frame 11d. The rotating shaft of the vertical drive motor 11b is connected to the lower end of the feed screw 11e. The vertical drive motor 11b is preferably a pulse motor, and is driven to rotate forward and backward by receiving a control signal.

A base end of a vertically moving arm 12 is screwed into the middle of the feed screw 11e.
The vertical movement arm 12 is configured to move up and down in response to the forward / reverse drive of b. A guide rail 11c penetrates slidably in the middle of the vertically movable arm 12, so that the rotation of the vertically movable arm 12 is suppressed.

The upper end of a support rod 10a is detachably connected to the tip of the vertical movement arm 12, and the stirring blade 10 is moved up and down along the rotation axis of the container holder 6 according to the vertical movement of the vertical movement arm 12. It is configured to: Since the stirring blade 10 can be retracted above the kneading container 5, the kneading container 5 can be easily removed from the container holder 6.

The shape of the stirring blade 10 and the structure of the vertical movement mechanism 11 are not limited to the above embodiment. The stirring blade 10 may include, for example, a screw-shaped blade to generate a convective flow. Ma
In addition, the vertical movement mechanism 11 is provided with sprockets and pulleys on the upper and lower sides, and the vertical movement arm 12 is coupled to a middle part of a chain or a belt stretched over the sprockets and pulleys. The supporting rod 10a may be configured to move up and down.

The kneading container 5 revolves around the revolving shaft 3a while revolving, so that the kneaded material 13 inside the kneading container 5 is subjected to centrifugal force due to revolving and centrifugal force due to rotation. Since the centrifugal force due to the revolution is larger than the centrifugal force due to the rotation, the material 13 to be kneaded in the kneading container 5 is mainly pushed by the inner peripheral wall of the container 5 due to the centrifugal force due to the revolution of the kneading container 5. Thereby, the release of the bubbles existing in the kneaded material 13 is promoted. Further, since the direction of action of the centrifugal force due to the rotation always changes in each direction with respect to the direction of action of the centrifugal force due to the revolution of the kneading vessel 5, the kneading of the kneaded material 13 in the kneading vessel 5 by stirring is promoted.

Further, the stirring blade 1 is placed in the rotating kneading vessel 5.
0, the stirring action in the kneading vessel 5 is promoted. However, when the stirring blade 10 is moved up and down in the kneading vessel 5, the stirring is more forcibly promoted, so that several kinds of kneading with greatly different specific gravities are performed. Even in the case of mixing and kneading the sum material 13, the centrifugal separation action can be effectively suppressed, and kneading with extremely high uniformity can be performed.

Further, when a servomotor is used in controlling the revolution driving motor 3 and the rotation driving motor 8 described above, more ideal rotation control becomes possible, and a previously programmed kneading process and the like can be performed. Can be accurately reproduced.

In order to change the control of the revolution and rotation of the kneading container 5 and the up and down movement of the stirring blade 10 as necessary, the operator himself / herself can change the rotation speed of each motor, start and stop operations according to time. Is performed each time, or it is necessary to provide a microcomputer or the like to automatically control each motor according to a program input in advance.

The kneading apparatus 1 described in the above embodiment is provided with one kneading vessel 5, a rotation driving motor 8 and one stirring blade 10 attached thereto. It is also possible to provide two or more, and it is desirable to provide a plurality of them in order to properly secure the balance of rotation.

FIGS. 4 and 5 show a second embodiment of the present invention. FIG. 4 is a schematic longitudinal sectional front view of a kneading apparatus.
FIG. 5 is an operation explanatory view of the kneading container. In these drawings, the same components as those in the first embodiment are denoted by the same reference numerals. In addition, in FIG.
The center of the revolution, the trajectory of B is revolving, and the axis of C in rotation
Lines are shown.

In this second embodiment, FIG.
As shown, the bottom 5a of the kneading container 5 is
A plane perpendicular to the rotation axis C and an angle θ (for example, 10 °)
It is inclined by the angle made (ie, 90-θ) . Therefore, when the kneading container 5 is driven to rotate, the inclined bottom 5
A motion occurs such that the left and right of a a swing up and down. one
On the other hand, as clearly shown in FIG. 5, from the bottom 5a of the kneading vessel 5
The cylindrical side wall extending to the upper end of the container is substantially coaxial with the rotation axis C
So that the kneading container 5 rotates in a well-balanced manner.
Can be done.

Therefore, centrifugal force is applied to the kneaded material 13 by revolving the kneading container 5 in a state where the kneading container 5 is inclined at about 45 °, and the bubbles generated in the kneaded material 13 are subjected to the centrifugal force. Is released in the centrifugal direction. Further, the kneading container 5 rotates to promote the kneading of the material 13 to be kneaded. Further, by receiving the pseudo vertical movement of the inclined bottom portion 5a generated by the rotation of the kneading container 5, even when several kinds of kneaded materials 13 having greatly different specific gravities are mixed, their centrifugal separation action is generated. And kneading can be performed effectively. Therefore, uniform kneading can be achieved.

In the above embodiment, one kneading vessel 5 is provided, but the present invention is not limited to this, and two or more kneading vessels can be provided. It is desirable to provide a plurality of kneading containers 5 also. Although not shown in FIG. 4, in the case of one kneading container 5, a balancer for maintaining rotational balance is provided on the opposite side with respect to the revolving shaft.

[0037]

As described above, according to the present invention, stirring and kneading of a fluid kneading material in a kneading vessel can be effectively performed, and plural kinds of materials having greatly different specific gravities can be obtained. It is possible to provide a kneading apparatus capable of effectively kneading even when mixing and kneading .

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional front view of a kneading apparatus showing a first embodiment of the present invention.

FIG. 2 is an enlarged front sectional view showing the mounting structure of the kneading container of the embodiment of FIG. 1;

FIG. 3 is a perspective view showing a shape of a stirring blade of the embodiment of FIG. 1; .

FIG. 4 is a schematic longitudinal sectional front view of a kneading apparatus showing a second embodiment of the present invention.

FIG. 5 is an operation explanatory view of the kneading container of Embodiment 2 of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 kneading device 3 revolving drive motor 3 a revolving shaft 4 rotating body 5 kneading container 5 a inclined bottom surface 6 container holder 8 rotation driving motor 10 stirring blade 10 a support rod 11 vertical movement mechanism 11 b vertical drive motor 11 e feed screw 12 vertical arm 13 kneading Japanese material

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B01F 9/00-9/22

Claims (3)

(57) [Claims] 1. A container holder provided on a rotating body attached to a substantially vertical revolving shaft, revolves around the revolving shaft, and revolves around an axis whose upper portion is inclined toward the revolving shaft with respect to the revolving shaft. And a bottomed cylindrical kneading container held substantially coaxially by the container holder, wherein the rotating body revolves around the center of the inner bottom surface of the kneading container.
Toward the peripheral edge of the inner bottom surface where the maximum centrifugal force acts
Stirring blades extending along the plane are inserted into and removed from the kneading vessel.
A kneading device, wherein the kneading device is provided so as to be capable of being kneaded. 2. A rotating body mounted on a substantially vertical revolution shaft.
And revolves around the axis of revolution.
Rotates around an axis whose upper part is inclined toward the revolving axis with respect to the axis
And a container holder substantially coaxially held by the container holder.
A kneading apparatus provided with a bottom cylindrical kneading container,
The rolling element includes the container when the container holder revolves and rotates.
Can be moved up and down along the axis of rotation of the holder.
Stirring blades are provided so as to be able to be taken in and out of the kneading vessel.
A kneading device characterized by the above-mentioned . 3. A container holder which revolves around a substantially vertical revolving axis and rotates about an axis whose upper part is inclined toward the revolving axis with respect to the revolving axis, and a bottomed cylindrical shape held by the container holder. In the kneading apparatus provided with the kneading container , the kneading container has a cylindrical side wall portion substantially aligned with the rotation axis of the container holder.
It is arranged coaxially and its bottom is
A kneading device characterized by being inclined at a predetermined angle .