JPH0929086A - Kneading apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively perform the stirring and defoaming of the material in a container by rotating the container held to a container holder on its revolution track while revolving the container and allowing the centrifugal force by revolution and the centrifugal force by rotation to act on the material in the container. SOLUTION: When a revolution shaft 3 of a revolution drive motor 5 is rotationally driven, the container 17 held to a container holder 18 is revolved. When a rotation shaft 16 is rotatlonally driven by a rotation drive motor 19, the container 17 is rotated along with the container holder 18. Further, by driving a shaking mechanism by a shaking drive motor 32, the container 17 is shaken symmetrically with respect to a balance wt. along with the container holder 18. The material to be kneaded is pushed to the inner peripheral wall of the container by the centrifugal force by revolution and rotation and the discharge of the air bubbles in the material to be kneaded is accelerated. Since the acting direction of centrifugal force by rotation is always changed in respective directions, the kneading of the material to be kneaded in the container 17 by stirring is accelerated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a kneading method capable of stirring, kneading and defoaming a fluid material such as a solder paste, a dental impression material, an oil / fat, a resin, a dye or a pigment. Regarding the device.

[0002]

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

Japanese Utility Model Publication No. 5-32110 discloses a kneading device proposed by the present inventor. In this kneading device, since the axis of rotation of the container is inclined about 45 ° toward the revolution axis, the pressing force due to the centrifugal force acts on the inclined inner wall of the container, and the component of the pressing force moves downward to the inner wall of the container. To work. Therefore, stirring and defoaming of the material to be kneaded are promoted in combination with the action force of the rotation of the container.

However, since the inclination angle of the container is constant, there is a limit to further promoting the stirring and defoaming of the material to be kneaded in the container. Further, in order to exert the promoting function of mixing and defoaming, it is necessary to increase the inclination angle of the container and to reduce the amount of the material to be kneaded contained in the container. Also,
Since it is necessary to add an angle corresponding to the inclination angle of the container to the drive system that rotates the container, in the case of a rotation drive system that rotates the container by linking with the revolution axis, it is easy to apply an unreasonable load to this drive system and it is durable. There is a difficulty in sex.

In order to solve the above problem, the present inventor proposed in Japanese Patent Application No. 5-67623 a kneading device for revolving and rotating the container while swinging the rotation axis of the container.
In this kneading device, in this kneading device, since the axis of rotation of the container is swung during the revolution and rotation of the container,
It is possible to effectively promote stirring and defoaming of the material to be kneaded in the container.

[0006]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention
In No. 23, as a drive mechanism for revolving and rotating while swinging the container, a configuration in which an easy revolution mechanism, a rotation mechanism, and a swing mechanism are driven by a common drive motor,
Although a configuration in which each is individually driven by a drive motor is disclosed, in any case, the rotation drive shaft that is arranged parallel to the revolution axis with respect to the revolving driven rotating body swings together with the container. Since the driven shaft is connected via a universal joint, an expensive universal joint having excellent processing accuracy and durability is required.

Therefore, an object of the present invention is to provide a kneading device which can effectively stir and defoam a fluid material in a container and has a simple structure and excellent reliability and durability. Especially.

[0008]

In order to achieve the above object, the invention according to claim 1 is a rotary body rotatably attached to a base body through a revolving shaft extending in the vertical direction,
A swing support body that is swingably attached to the rotating body via a swing shaft parallel to an axis orthogonal to the revolution axis, and a substantially vertical direction that is orthogonal to the swing axis with respect to the swing support body. Rotatably attached via a rotation shaft extending to the container holder for holding a container containing a material having fluidity, and the container together with the container holder by rotationally driving the rotating body via the revolution shaft. A revolution drive motor that revolves around,
A rotation drive motor that is mounted on the rocking support and rotates the rotation shaft to rotate the container together with the container holder on its revolution orbit; Provided is a kneading device including a swinging mechanism that swings the rotation axis of the container holder with respect to an axis parallel to the revolution axis by moving the container holder.

In the kneading apparatus having the above-described structure, the container held by the container holder can be revolved around its revolution orbit while revolving, so that the material in the container is centrifugal force due to revolution of the container and centrifugal force due to rotation. Power works. And
Since the centrifugal force due to the revolution is larger than the centrifugal force due to the revolution, the material inside the container is mainly pushed by the inner wall of the container by the centrifugal force due to the revolution of the container, and the depressurization of the material accelerates. 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 container, the stirring and mixing of the materials in the container are promoted. Furthermore, since the container can be rotated and revolved together with the container holder while swinging the rotation axis of the container holder with respect to the axis parallel to the revolution axis by the swing mechanism,
The action direction of the centrifugal force of the material on the inner wall of the container changes with the swing of the container, especially when the container swings radially inward of the revolution axis relative to the axis parallel to the revolution axis and radially outward. The action direction of the vertical component force of the revolution centrifugal force on the inner wall of the container is opposite to that when it is swung to. As a result, the relationship between the direction of action of the centrifugal force due to the revolution and the direction of action of the centrifugal force due to rotation changes more complicatedly, so even if a large amount of material is stored in the container, stirring, defoaming of the material in the container, etc. Can be done effectively.

Moreover, since the container holder can be driven to rotate by a rotation driving motor independent of the rotation driving motor, the speed of rotation and rotation by both motors, ON / OFF, etc. can be controlled arbitrarily. Therefore,
For example, by adjusting the speed ratio between the revolution and rotation of the container holder according to the shape of the container or the amount of material in the container, the specific gravity of the material, the viscosity, etc., stirring, defoaming, etc. of the material in the container can be performed. It can be done effectively. Moreover, if the rotation of the container is stopped before stopping the revolution of the container, the stirring action of the material can be attenuated while the centrifugal force due to the revolution of the container is generated in the material in the container. The defoaming performance will be improved.

Further, since the rotation drive motor for rotating the container holder via the rotation shaft is attached to the swing support together with the container holder and swings together with the swing support, the rotation drive motor and the container holder No universal joint is required for the power transmission mechanism between the two. Therefore, the structure of the rotation drive system is simplified, and its reliability and durability are improved.

According to a second aspect of the invention, in the kneading device according to the first aspect, a swing drive motor for driving the swing mechanism is attached to the rotating body.

In the kneading device having the above-mentioned structure, the swinging mechanism for swinging the container holder can be driven by the swinging drive motor independent of the revolution driving motor and the rotation driving motor. Can independently control the swing speed, on / off, etc. Therefore, by adjusting the speed ratio of revolution, rotation, and swing of the container holder according to the shape of the container or the amount of the material in the container, the specific gravity of the material, and the characteristics such as viscosity, the material in the container is agitated and removed. Bubbles and the like can be more effectively performed. Also, in the final stage of kneading by revolution, rotation and rocking, when the upper part of the container is the most inclined angle to the revolution axis side, the rocking of the container is stopped to collect the material in the container on the bottom side of the container. Therefore, the adhesion of the material to the upper lid of the container can be reduced.

According to a third aspect of the present invention, in the kneading apparatus according to the first aspect, the rotating body is provided with a swing shaft that is arranged symmetrically to the swing shaft that supports the swing support with respect to the revolution shaft. The balance weight is swingably mounted on the swing support body and the balance weight so as to swing the container holder and the balance weight symmetrically with respect to the revolution axis through both swing shafts. It is characterized by being connected to and.

In the kneading apparatus having the above structure, the balance weight that swings symmetrically with the container holder can maintain the dynamic balance of the weight of the rotating body, so that the vibration during rotation can be further reduced.

According to a fourth aspect of the present invention, in the kneading device according to the first aspect, the revolution drive motor is a servo motor.

In the kneading device having the above-mentioned structure, since the revolution drive motor is the servo motor, the falling characteristic of the container revolution speed at the time of stop can be precisely set, so that the brake shock at the time of stop, etc. It is possible to prevent unnecessary firing in the container. Therefore, the defoaming performance is improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

1 to 5 show one embodiment of the present invention. FIG. 1 is a schematic vertical sectional view of a kneading device, and FIG. 2 is a sectional view of the kneading device taken along the line AA in FIG. FIG. 3 is a schematic plan view of a main part showing a rotation mechanism of the kneading device, FIG. 4 is a schematic front view of a main part showing a rocking mechanism of the kneading device, and FIG. 5 is a revolution, rotation and rocking of a container holder in the kneading device. It is a graph which shows an example of control of exercise.

Referring to these drawings, the kneading apparatus comprises a base body 1 and a bearing 2 at the center of the base body 1.
It has a revolution shaft 3 which is rotatably supported via (see FIG. 3) and extends in the vertical direction, and a rotating body 4 which is fixed to the upper part of the revolution shaft 3. A revolution drive motor 5 is attached to the lower surface of the base body 1, and a motor shaft 6 of the revolution drive motor 5 is coaxially connected to the revolution shaft 3. Preferably, the revolution drive motor 5 comprises a servomotor.

As shown in FIG. 1, the base body 1 is elastically supported on the inner surface of the casing 8 by a plurality of tension springs 7 arranged radially around the base body 1, and the revolution drive motor 5 is also provided. The bottom of the casing is elastically supported by the inner bottom of the casing 8 via an elastic member 9 arranged on an extension of the axis of the revolution shaft 3 and the motor shaft 6. As the elastic member 9, for example, a rubber body, a coil spring, or the like, or an air damping type vibration damping rubber (air damper) can be used.

As shown in FIG. 2, the rotating body 4 is composed of two parallel side plates 10 and 11 and a bottom plate 12 connecting the center portions of the bottoms of both side plates 10 and 11. A swing support 13 is arranged between both side plates 10 and 11 of the rotating body 4, and both sides of this swing support 13 are parallel to the axis of rotation of the rotating body 4 and orthogonal to the revolution axis 3. A pair of swing shafts 14 and 15 are provided coaxially with each other and rotatably supported by the rotating body 4,
The swing support 13 is swingably attached to the rotating body 4 via both swing shafts 14 and 15.

As shown in FIGS. 1 and 2, the rocking support 1
A rotation shaft 16 that is orthogonal to the swing shafts 14 and 15 and extends substantially in the vertical direction is rotatably supported on the rotation shaft 3, and a fluid material such as a material to be kneaded is contained in the upper end portion of the rotation shaft 16. A container holder 18 that holds the cylindrical container 17 coaxial with the rotation shaft 16 is fixedly installed. That is, the container holder 17
Is rotatably attached to the swing support 13 via a rotation shaft 16. Therefore, when the rotating body 4 is rotationally driven by the revolution drive motor 5, the container holder 18 is revolved around the revolution axis 3 together with the swing support 13. The container 17 is detachably attached to a container holder 18,
The upper lid 8a of the casing 8 can be opened and removed from above the casing 8.

A rotation drive motor 19 for rotationally driving the rotation shaft 16 via a power transmission mechanism 20 is laterally attached to the swing support 13. As shown in FIGS. 1, 2, and 3, in the illustrated embodiment, the power transmission mechanism 20 includes a bevel gear 22 attached to a motor shaft 21 of a rotation drive motor 19, and a bevel gear 23 meshing with the bevel gear 22. A spur gear 24 coaxially and integrally provided with the bevel gear 23 under the bevel gear 23, and a spur gear 2 meshing with the spur gear 24.
5, a pulley 26 provided coaxially and integrally with the spur gear 25 under the spur gear 25, a pulley 27 attached to the rotation shaft 16, and a timing belt 28 wound around the pulleys 26, 27. Consists of. Gears 23, 2
4 is through a support shaft 29, a gear 25 and a pulley 26.
Are rotatably supported by the swing support 13 via support shafts 30, respectively. Therefore, by rotating the rotation shaft 16 by the rotation drive motor 19 via the power transmission mechanism 20, the container 17 held by the container holder 18 can be rotated around the rotation shaft 16 on its revolution orbit. .

As shown in FIGS. 1, 2 and 4, the rotary body 4 is further swung with respect to the rotary body 4 so that the rotary shaft 16 swings about an axis parallel to the revolution shaft 3. An oscillating mechanism 31 for moving the rotator 4 is provided, and an oscillating drive motor 32 for driving the oscillating mechanism 31 is attached to the rotating body 4. The swinging mechanism 31 includes the side plate 1 of the rotating body 4.
It has a swing drive shaft 33 which is rotatably supported at 0 and extends at right angles to the revolution shaft 3, and the swing drive shaft 33 is connected to the motor shaft of a swing drive motor 32 inside the side plate 10.
Further, a pin 35 is attached in parallel with the swing drive shaft 33 near the periphery of the rotary plate 34 attached to the tip of the swing drive shaft 33 outside the side plate 10. An upper end of a crank rod 36 is rotatably connected to the pin 35. On the other hand, the side plate 10 is formed with a guide groove 37 extending vertically below the swing drive shaft 33, and the lower end of the crank rod 36 is rotatable to a support shaft 38 guided vertically by the guide groove 37. Are linked to. And this support shaft 3
8, one end of a connecting rod 39 is rotatably connected, and the other end of the connecting rod 39 has a pin 41 at the upper end of a swinging rod 40 attached to the tip of the swinging shaft 14 outside the side plate 10. It is rotatably connected via. Therefore, by rotating the swing drive shaft 33 of the swing mechanism 31 by the swing drive motor 32, the swing support body 13 can be swung via the swing shaft 16, whereby the container 17 and Container holder 1
8 can be rocked together with the rocking support 13.

Further, the side plate 10 of the rotating body 4 has a revolution shaft 3 on the side plate 10.
On the other hand, a swing shaft 42 arranged symmetrically with the swing shaft 16 that supports the swing support 13 is rotatably supported, and a balance weight 43 is fixed to the swing shaft 42. . One end of a connecting rod 44 is rotatably connected to the support shaft 38 of the swinging mechanism 31, and the other end of the connecting rod 44 is attached to the tip of the swinging shaft 42 outside the side plate 10. It is rotatably connected to the upper end of the rod 45 via a pin 46. Therefore, by rotating the swing drive shaft 33 of the swing mechanism 31 by the swing drive motor 32, the container holder 17 and the balance weight 43 can swing symmetrically with respect to the revolution shaft 3.

As shown in FIGS. 1 and 2, the side plate 1 of the rotating body 4
A non-contact type power feeding connector 48 is mounted coaxially with the revolution shaft 3 on a support plate 47 attached to the upper ends of 0 and 11, and the non-contact type power feeding is applied to the rotation drive motor 19 and the swing drive motor 32. Power is supplied from above the base body 1 via the connector 48.

In the kneading device having the above structure, as described above, when the revolution drive motor 5 rotationally drives the revolution shaft 3, the rotation support 16 and the rotation shaft 16 and the container holder 1 are rotated.
The container 17 held via 8 revolves around the revolution axis 3. In addition, the rotation drive motor 19 drives the power transmission mechanism 2
When the rotation shaft 16 is rotationally driven via 0, the container 17 rotates together with the container holder 18 on its orbit. Further, the container 17 can be rocked together with the container holder 18 symmetrically with the balance weight 43 by driving the rocking mechanism 31 by the rocking drive motor 32. Therefore, by activating the three motors 5, 19, 32, the container 17 can be revolved and rotated while swinging.

As described above, since the container 17 revolves around the revolution axis 3 while revolving, the material to be kneaded (not shown) inside the container 17 is subjected to the centrifugal force due to the revolution and the centrifugal force due to the revolution. To do. Then, since the centrifugal force due to the revolution is larger than the centrifugal force due to the rotation, the material to be kneaded in the container 17 is mainly pushed by the centrifugal force due to the revolution of the container 17 to the inner peripheral wall of the container 17, and the pushing force is applied. The release of bubbles contained in the kneading material is promoted. Also, the container 17
The direction of action of the centrifugal force due to the rotation always changes in each direction with respect to the direction of the action of the centrifugal force due to the revolution of (1), so that the kneading of the material to be kneaded in the container 17 by stirring is promoted. In particular, container 1
Since 7 rotates and revolves while swinging inward and outward in the radial direction of the revolving shaft 3 with respect to an axis parallel to the revolving shaft 3, the action direction of the pressing force by the centrifugal force is accompanied by the swinging of the container 17. Especially, when the container 17 swings inward in the radial direction of the revolution shaft 3 with respect to the axis parallel to the revolution axis 3 and when it swings outward in the radial direction, the revolution centrifugal action on the inner peripheral wall of the container 17 occurs. The action direction of the component force in the vertical direction of the force is reversed. as a result,
Since the relationship between the action directions of the centrifugal force due to the revolution and the centrifugal force due to the rotation changes more complicatedly, even when a large amount of the material to be kneaded is accommodated in the container 17, defoaming and stirring of the material to be kneaded. Can be promoted even more effectively.

Moreover, since the container holder 18 can be driven to rotate by the rotation driving motor 19 independent of the revolution driving motor 5, the speeds of rotation and rotation by both motors 5 and 19, ON / OFF, etc. can be arbitrarily set. Can be controlled. Therefore, for example, by adjusting the speed ratio of the revolution and the rotation of the container holder 18 in accordance with the shape of the container 17 or the characteristics such as the amount of the material to be kneaded in the container 17, the specific gravity of the material, the viscosity, etc. It is possible to effectively stir and defoam the above materials. Further, as illustrated in FIG. 5, if the rotation of the container 17 is stopped before stopping the revolution of the container 17, the centrifugal force due to the revolution of the container 17 is generated in the material inside the container 17, Since the stirring action of the material can be attenuated, the defoaming performance is improved.

Further, the container holder 1 is mounted via the rotation shaft 16.
8 A rotation drive motor 19 that rotates is attached to the swing support 13 together with the container holder 18 and swings together with the swing support 13. Therefore, a power transmission mechanism between the rotation drive motor 19 and the container holder 18 is provided. No need for universal joint on 20. Therefore, the structure of the rotation drive system is simplified, and its reliability and durability are improved.

Further, since the swing mechanism for swinging the container holder 18 is driven by the swing drive motor 32 independent of the revolution drive motor 5 and the rotation drive motor 19, it is independent of the speed of revolution and rotation. The rocking speed, on / off, etc. can be controlled arbitrarily. Therefore, by adjusting the speed ratio of the revolution, rotation, and swing of the container holder 18 in accordance with the shape of the container 17, the amount of the material in the container 17, the specific gravity of the material, and the characteristics such as viscosity, the material in the container 17 is adjusted. Stirring,
Defoaming can be performed more effectively. Further, as illustrated in FIG. 5, at the final stage of kneading by revolution, rotation and rocking, the container 1 is stopped before the revolution of the container 17 is stopped.
When the upper part of 7 is the most inclined angle to the revolution axis 3 side, the container 1
By stopping the swinging of the container 7, the material in the container 17 can be brought closer to the bottom side of the container 17.
Adhesion of material to the upper lid 17a can be reduced.

Furthermore, since the balance weight 43 swinging symmetrically with the container holder 18 can maintain the dynamic balance of the weight of the rotating body 4 during the rotating operation, the vibration during the rotation can be further reduced.

Further, since the revolution drive motor 5 is a servo motor, the falling characteristics of the revolution speed of the container 17 can be set precisely when the container 17 is stopped. It is possible to prevent unnecessary fire from occurring. Therefore, the defoaming performance is further improved.

Further, in the illustrated embodiment, the rotation drive motor 19 and the swing drive motor 32 are arranged in the vicinity of the center of rotation of the rotating body 4, so that the weight of the motors 19, 32, etc. rotates the rotating body 4. The effect on balance can be minimized.

Although the illustrated embodiment has been described above, the present invention is not limited to the above embodiment. For example, the power transmission mechanism 20 for connecting the rotation drive motor 19 and the rotation shaft 16 to each other includes a pulley and a pulley. Instead of the belt, only a gear train may be adopted, and the motor shaft of the rotation drive motor 19 and the rotation shaft 16 may be directly connected.

Further, in the illustrated embodiment, the container 1
Reference numeral 7 denotes a body that swings with the rotation shaft 16 and the container holder 18 symmetrically inward and outward in the radial direction of the revolution shaft with respect to an axis parallel to the revolution shaft 3 by the same angle. The angle can be changed arbitrarily, and it is also possible to swing the shaft only inward or outward in the radial direction of the revolution shaft with respect to the axis parallel to the revolution shaft 3.

[0038]

As is apparent from the above description, according to the invention described in claims 1 to 4, stirring and defoaming of the fluid material in the container can be effectively performed, and the structure is It is possible to provide a kneading device that is simple and has excellent reliability and durability.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a kneading device showing a preferred embodiment of the present invention.

2 is a cross-sectional view of the kneading device shown in FIG. 1 taken along the line AA in FIG.

FIG. 3 is a schematic plan view of essential parts showing a power transmission mechanism between a rotation drive motor and a rotation shaft of the kneading device shown in FIG.

FIG. 4 is a schematic front view of essential parts showing a swing mechanism of the kneading device shown in FIG. 1.

5 is a graph showing an example of control of revolution, rotation and rocking motion of the container holder in the kneading device shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Base body 3 Revolution shaft 4 Rotation body 5 Revolution drive motor 13 Revolution support body 14,15 Oscillation shaft 16 Revolution shaft 17 Container 18 Container holder 19 Revolution drive motor 20 Power transmission mechanism 31 Oscillation mechanism 32 Oscillation drive motor 42 Swing shaft 43 Balance weight

Claims (4)

[Claims] 1. A rotating body rotatably attached to a base body via a revolving shaft extending in the up-down direction, and swingable with respect to the rotating body via a swinging shaft parallel to an axis orthogonal to the revolving shaft. And a container that accommodates a fluid material that is rotatably attached to the swing support and a rotation shaft that is orthogonal to the swing support and extends substantially vertically with respect to the swing support. A container holder that holds it, and a revolution drive motor that revolves the container around the revolution axis by rotating the rotation body through the revolution axis. By rotating the container holder together with the container holder on its orbit around the rotation axis, the rotation axis of the container holder is parallel to the revolution axis by swinging the swing support body with respect to the rotating body through the swing shaft. Oscillates about any axis A kneading device, comprising: 2. The kneading device according to claim 1, wherein a swing drive motor for driving the swing mechanism is attached to the rotating body. 3. A balance weight is swingably attached to the rotating body via a swing shaft that is arranged symmetrically to a swing shaft that supports a swing support member with respect to an orbital shaft. ,
2. The container holder and the balance weight are connected to the swing support and the balance weight so as to swing the container holder and the balance weight symmetrically with respect to the revolution axis through both swing shafts, respectively. Kneading equipment. 4. The kneading device according to claim 1, wherein the revolution drive motor is a servo motor.