JP2006263691A - Method for mixing and defoaming and deforming mixer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for mixing and defoaming and a deforming mixer having a high functionality wherein the energy loss of a rotational driving force is reduced and a liquid composition is efficiently mixed and defoamed while its constitution and operation are simple. <P>SOLUTION: The defoaming mixer comprises a couple of pulleys with a one-way clutch rotatable in a single direction 36 which are mounted in two stages at a rotational axis 46 beneath a pulley for transmitting planetary rotation force 45 and have different diameters from each other, two-stage type fixed pulleys (orbital pulleys) 35 which is fixedly arranged to a supporting member 39 against the pulleys with the one-way clutch 36, a couple of belts 47a, 47b which are stretched between the orbital pulleys 35 and the pulleys with the one-way clutch 36 respectively, and a means for changing a rotational direction of a rotational driving source 37 clockwise or anticlockwise. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

The present invention relates to a defoaming kneading method and a kneading apparatus suitable for preparing, for example, a kneaded defoaming composition of a powder and a liquid, or a kneading defoaming composition of a liquid resin and a solvent.

For example, as a means of kneading and defoaming powder and liquid or kneading and defoaming of liquid resin and solvent, there is known a means for rotating while rotating a sample container containing a required amount of an object to be processed. Yes. In other words, the centrifugal force action caused by revolution is used to move components having a large specific gravity in the processed object to the outside, and bubbles mixed in the processed object are pushed out and separated to the opposite side, so that the stirring and kneading action is removed. A means of simultaneously performing the foaming action is known (Patent Technology Document 1).

FIG. 4 is a cross-sectional view showing a main part configuration of a conventionally known liquid agitating and kneading / defoaming apparatus. First, in the main body case (outer case) 1, a support 3 is held almost horizontally via a vibration-proof spring 2, and the lower surface of the central portion of the support 3 is attached to the sample container. A rotation drive source (motor) 4 that transmits the revolution rotation force and the rotation rotation force is supported. In addition, on the upper surface side of the central portion of the support 3, the revolving rotary shaft 5 is directly connected to or connected to the motor 4 rotary shaft perpendicularly to the support 3. A revolving arm (revolving rotator) 6 is held almost horizontally on the upper end side of the revolving rotary shaft 5, and the rotating revolving shaft 7 is revolved on one centrifugal side of the revolving arm 6. It is fixed to the diverting rotation shaft 5 so as to be tilted inward and rotatable.

Further, on the other centrifugal side of the revolving arm 6, a pulley shaft 8 is provided so as to protrude parallel to the revolving rotary shaft 5 and downward with respect to the revolving arm 6. Here, the central axes of the rotation shaft 7 for rotation and the pulley shaft 8 are set at symmetrical positions with the rotation shaft 5 for revolution interposed therebetween. A container holder 10 for holding the sample container 9 is coaxially disposed at the upper end of the rotation shaft 7 for rotation, and a rotation pulley 11 is attached to the outer bottom wall surface of the container holder 10. . That is, the container holder 10 is rotatably attached to the rotary arm 6 via the rotation shaft 7 for rotation, and the rotation torque transmission pulley 12 is rotatably mounted on the pulley shaft 8. The rotation torque transmission pulley 12 includes an upper pulley connected to the rotation rotation shaft 7 and a lower pulley connected to the revolution rotation shaft 5 side.

On the other hand, on the symmetrical side of the container holder 10, a balance adjusting mechanism 13 for balancing the weight of the sample container 9 and the container holder 10 is provided, and on the substantially central part of the revolving arm 6, a rotation pulley 11. And a direction change guide roller 15 for guiding an endless belt 14 that spans between the rotation torque transmission pulley 12 and the rotation torque transmission pulley 12. Further, below the revolving arm 6, an annular pulley 16 comprising an upper pulley and a lower pulley for changing the rotational speed of the pulley shaft 8 in multiple stages is rotatably mounted on the revolving rotary shaft 5. ing.

In other words, the upper pulley 18 is disposed on the upper side of the switching shaft 17 that is symmetrically spaced from the pulley shaft 8 with the revolution rotating shaft 5 interposed therebetween and is disposed so as to protrude above the support 3. The lower pulleys 20 are respectively attached to the two through the one-way clutch 19. Here, the lower pulley 20 is set to have a large diameter with respect to the upper pulley 18, and the rotational force of the rotational drive source 4 is passed through a belt 22 laid between the rotating pulley 5 for revolution and the fixed pulley 21. Is transmitted to the lower pulley 20. Further, a belt 23 laid between the upper pulley 18 and the lower pulley of the annular pulley 16 fixed to the revolving rotary shaft 5, the upper pulley of the annular pulley 16, and the lower pulley of the rotation force transmission pulley 12 Is transmitted to the pulley shaft 8 (rotation side) via a belt 24 spanned between them.

The switching shaft 17 is switched to stop / rotation by the switching shaft switching means 24. That is, the rotation / stop of the lower pulley 20 and the upper pulley 18 is controlled by the operation of the switching shaft switching means 24 installed on the lower surface side of the support 3. Here, the switching shaft switching means 24 is attached to the housing 25 surrounding the switching shaft 17 extending on the lower surface side of the support 3, the projection 26 projecting from the inner wall surface of the housing 25, and the projection 26. A support plate 28 that advances and retreats in the axial direction by a solenoid spring 27; a key 29 that penetrates the support plate 28; a movable core 30 that is connected to the lower end of the key 29; an electromagnetic coil 31 that is connected to the other end of the movable core 30; The configuration includes a permanent magnet 32 that operates the electromagnetic coil 31. Note that the key 29 advances and retreats coaxially with the switching shaft 17 and is switched by engagement / disengagement between the protrusion at the upper end of the key 29 and the groove at the lower end of the switching shaft 17.

That is, the movable iron core 30 is always in a state of protruding from the main body case 33 by the biasing force of the solenoid spring 27, and the protrusion at the upper end of the key 29 and the groove at the lower end of the switching shaft 17 are engaged (fitted). The rotation of 17 is stopped. On the other hand, the movable iron core 30 is attracted to the electromagnetic coil 31 when the electromagnetic coil 31 is operated, and is pulled into the main body case 33 against the urging force of the solenoid spring 27, so that the protrusion on the upper end of the key 29 and the switching shaft 17 are moved. The engagement (fitting) with the groove at the lower end is released, and the switching shaft 17 rotates. In the figure, 34 is a balance weight for the switching means 24.

In addition to the revolution and rotation described above, the combined means with variable rotation speed enables centrifugal separation to move components with high specific gravity in the object to be processed to the outside of the container, and further stirring and kneading (subjected to rotation). It has been attracting attention because the processing object can be defoamed and kneaded (mixed) relatively efficiently by the action of a spiral flow occurring in the processed material and the simultaneous stirring action.

Japanese Patent Application Laid-Open No. 2000-271465

In the case of the above-described defoaming / kneading means, since one rotation drive source 4 is used for revolution for rotation and rotation for rotation, the means can be simplified and the cost can be reduced. Further, since the rotation speed and revolution speed can be changed and controlled, there is an advantage that required defoaming and kneading can be realized at low cost. However, although the above means has both a stirring / kneading function and a defoaming function, a region where kneading is impossible or poor kneading is recognized, and it cannot be said that it is practically satisfactory.

In other words, select the optimum conditions experimentally on a small model by changing the rotation speed and revolution speed by driving the above means or one inverter motor, or by selecting and setting multiple conditions for kneading time. When applied to practical / mass production means (large models for production lines), there is a problem in reproducibility, and it is difficult to provide the required defoamed / stir kneaded material in mass production. In other words, the laboratory scale and the mass production scale are slightly different in various conditions, and therefore there is a problem that further trial and error is required for implementation on the mass production scale.

Therefore, the present invention provides a highly functional and highly reliable defoaming kneading method and apparatus that is simple in configuration and operation, reduces energy loss of rotational driving force, and can efficiently knead and defoam a fluid composition. For the purpose of provision.

The defoaming kneading method according to the present invention is interlocked with the revolution of the revolving arm extended outward on the revolving rotary shaft of the forward / reverse rotation type, and is rotated with an inclination toward the tip end side of the revolving arm. The revolving rotational force is transmitted to the cylindrical rotation shaft of the upper end opening that can be mounted, and the sample container stored and mounted on the cylindrical rotation shaft is rotated while revolving, and the object in the sample container is defoamed and stirred. A defoaming / kneading method for kneading,
The rotational force of the revolving rotating shaft is transmitted to the rotating rotating shaft through a pulley with a one-way clutch having different outer diameters and capable of being driven to rotate in one direction, and the sample container is rotated clockwise and counterclockwise. It is characterized by switching rotation.

A defoaming and kneading apparatus according to the present invention includes a forward / reverse rotating type rotating shaft arranged in a vertical direction rotated by a rotation driving source, and a revolving arm fixedly mounted on an upper end side of the rotating shaft. A cylindrical rotation shaft that is rotatably mounted in an inwardly inclined manner on the distal end side of the revolving arm, and rotates in correspondence with the cylindrical rotation shaft on the other end side of the revolving arm. Rotating force transmission pulley that can be mounted and arranged, a pulley with a one-way clutch that can be rotated in one direction with different outer diameters that are mounted in two stages on a rotation support shaft below the rotating force transmission pulley, and the one-way clutch A two-stage revolving pulley that is rotatably mounted on a revolving rotary shaft corresponding to the pulley with revolving, a pair of belts that are separately installed between the revolving pulley and the pulley with the one-way clutch, and the rotational drive source Rotate Characterized in that formed by and a rotational direction switching means for switching the direction or reverse direction. Although not described in detail, it goes without saying that a weight balance adjusting mechanism corresponding to the mass of the sample is provided on the pulley side with the one-way clutch.

The defoaming and kneading means according to the present invention uses a pair of one-way clutch pulleys to transmit the rotational force of the revolving rotary shaft to the cylindrical rotation shaft, and selectively reverses the rotation of the rotational drive source. When rotating the pulley with one-way clutch to the right and the other pulley with one-way clutch to the left and rotating the sample container forward / reversely, the sample composition can be stirred and kneaded and degassed more efficiently. Based on this knowledge, the inventor has arrived at the invention. Here, selection of the rotation speed with respect to the revolution speed is, for example, when the revolution speed is a right rotation when the revolution speed is 600 rpm to 2000 rpm, the rotation speed is about 200 rpm to 666 rpm, and when the revolution speed is a left rotation, The rotational speed is about 300 rpm to 1000 rpm. And the selection setting of the rotation direction of the said rotating shaft is performed by the combination of two pulleys with a one-way clutch. In either case, since the revolution speed: m rpm and the rotation speed: m / n rpm are variable speeds, a so-called planetary variable speed stirring and defoaming mixer action is exhibited. Here, n is the ratio of the pulley with clutch and the revolution pulley.

In the configuration of the defoaming and kneading apparatus according to the present invention, the configuration and shape of the revolving arm may be any of, for example, a cylindrical shape, a disk shape, a radial shape, and the number of mounting and holding of the cylindrical rotation shaft is arbitrary. In particular, there are no restrictions. In other words, except for the mechanism for transmitting the rotational force of the rotating shaft for revolution with respect to the cylindrical rotating shaft and the rotation direction switching action, the sample composition is stirred and revolved by one revolution drive source (motor). The configuration of the means for performing kneading and defoaming can be diverted.

In the means according to the present invention, the method of transmitting the rotational force of the revolving rotating shaft to the cylindrical rotating shaft has a fixed pulley (revolving pulley) on the rotating rotating shaft side and a pulley on the rotating rotating shaft side. This is achieved by adopting a two-stage configuration of a one-way (one-way) clutch-equipped pulley having a different diameter and rotation direction, and switching the rotation direction of the rotation drive source by forward / reverse switching means. FIG. 1 schematically shows the relationship between the rotation of a revolving rotary shaft and the rotational drive of a pulley with a one-way clutch of the two-stage configuration. For example, a fixed pulley (revolving pulley) 35 of a revolving rotary shaft is shown in FIG. When the rotation is rotated to the right, the rotational force is transmitted between the two-stage pulley 36 with one-way clutch 36 and the upper pulley 36a, and the rotation is rotated to the left. On the contrary, when the rotation around the fixed pulley 35 is rotated to the left, the rotational force is transmitted to the lower pulley 36b of the two-stage pulley 36 with a one-way clutch, and the rotation is rotated to the right.

That is, when the belt 47 is rotated clockwise along the fixed pulley (revolving pulley) 35, the lower pulley 36b of the two-stage pulley 36 with a one-way clutch is free to rotate, and the upper pulley 36a is locked. Rotational force is transmitted to and from the pulley 36a, and the rotation is counterclockwise. On the contrary, when the revolving rotary shaft 38 is rotated so as to rotate the belt 47 counterclockwise along the fixed pulley (revolving pulley) 35, the upper pulley 36a of the two-stage pulley 36 with a one-way clutch is free to rotate, and the lower pulley Since the side pulley 36b is locked, rotational force is transmitted between the lower pulley 36b and the rotation is right-handed. The pulley 36 with a one-way clutch may be constructed by reversing the stacking of the upper and lower pulleys 36a and 36b, or the same pulley with one-way clutch is used in the opposite direction. May be taken. Furthermore, the pulley 36 with a one-way clutch can be changed from a two-stage configuration to a one-stage configuration, and the rotation speed can be set to 0 rpm depending on the rotation direction of the revolving rotary shaft 38.

In the means according to the present invention, the force applied to the sample container by the revolution rotation and the rotation rotation is displayed as follows. As schematically shown in FIG. 2, for example, the angle of the rotation axis is 45 degrees, the revolution radius R of the bottom of the sample container, the angular velocity ω _{1 of the} revolution axis, the angular velocity ω _{2 of the} rotation axis, the radius r of the inner diameter of the sample container, and the mass m. The weight P due to the applied gravity g (mg), the revolution vector F = mRω ₁ ² , and the rotation vector f = mrω ₂ ² . Also, gravity multiples mRω ₁ ² / mg revolving vector, gravity multiples mrω _{² 2} / mg next rotation vector, these figures also serves as an index for evaluating the stirring and kneading and degassing state.

More specifically, the radius of revolution and the radius of rotation differ between the large model and the small model, so it is practically difficult to determine equivalent performance by instantaneous conversion. On the other hand, by setting constant and arbitrary seconds and rotation speed, various coefficients and numerical values such as revolution speed, revolution centrifugal force, rotation speed, stirring kneading and defoaming time, vacuum exhaust time, etc. are displayed on the panel. Because it can be displayed on the screen, it is possible to make instantaneous comparisons of performance and functions, and reproducibility can be easily secured. In addition, light having a frequency matched to the revolution speed, for example, a strobometer that can be prepared, is placed on (or below) the transparent cover of the kneading device at an angle that matches the rotation axis of the sample container, and stirred through this transparent cover. By irradiating and observing the sample composition in the container, it is possible to observe the revolving motion in a stationary state.

In the above defoaming and kneading method and apparatus, when at least the inside of the sample container is evacuated to 0.5 to 50 Torr, bubbles (bubbles) mixed in the material easily expand as the evacuation occurs. The required time can be shortened.

According to the defoaming kneading method according to the present invention, the sample composition in the sample container in the process of revolution and rotation is synthesized along the rotation axis direction of the sample container by synthesizing the centrifugal force due to revolution and the centrifugal force due to rotation. The action of flow, kneading, and defoaming becomes smoother and spirals more efficiently. Furthermore, in this revolution / rotation process, the rotation rotation is switched to the right rotation and the left rotation, so that the flow, kneading and defoaming action accompanying the synthesis of the centrifugal force is promoted, and more efficient and high quality. A defoaming / kneading composition can be easily provided.

According to the defoaming and kneading apparatus according to the present invention, the defoaming and kneading operation can be easily achieved. That is, a high-quality defoamed kneaded composition corresponding to the properties of the object to be processed and the properties of the final preparation can be provided easily and at low cost.

Embodiments of the Invention

Hereinafter, an Example is described with reference to FIG. 3 which shows the principal part of the defoaming kneading apparatus based on this invention in cross section.

In the defoaming and kneading apparatus according to this embodiment, a revolving rotary shaft 38 that is rotationally driven by a rotary drive source (motor) 37 is disposed in the vertical direction through the support 39, and the upper end of the revolving rotary shaft 38 is A revolving arm 40 is fixedly mounted on the side. A cylindrical rotation shaft 41 is attached to one end side of the revolving arm 40 with an inward inclination so as to be able to rotate (rotate) via a bearing mechanism or the like. In addition, the cylindrical rotation shaft 41 has a structure corresponding to a rotation pulley 43 for receiving a rotational force by sliding rotation of the belt 42 on the outer peripheral surface thereof, and rotates with the sample container 44 housed and mounted. .

Further, the other end of the revolution arm 40 is attached to the cylindrical rotation shaft 41 so that the rotation force transmission pulley 45 can rotate (rotate) via a bearing mechanism or the like, corresponding to the cylindrical rotation shaft 41. Has been. A pulley 36 with a one-way clutch that is mounted in two stages and has a different outer diameter and is rotatable in one direction is mounted below the rotation support shaft 46 of the rotation force transmission pulley 45.

On the other hand, a revolving pulley 35 having a two-stage configuration is fixedly disposed on a support 39 on a revolving rotary shaft 38 corresponding to the pulley 36 with a one-way clutch. Further, between the revolution pulley 35 and the pulley 36 with a one-way clutch, belt pairs 47a and 47b for transmitting the revolution rotational force to the rotation force transmission pulley 45 are provided separately. The pulley with one-way clutch 36 is a rotation direction switching means (not shown) for switching between the forward direction (for example, right rotation) or the reverse direction (for example, left rotation), for example, selecting the rotation direction of the motor on the touch panel, or personal The rotation direction of the revolution pulley is switched by first rotating forward through a computer and switching to reverse rotation after a certain period of time.

Here, the pulley 36 with a one-way clutch having a two-stage configuration is connected to the upper pulley 36a between the pulley 36 with a one-way clutch 36 and a two-stage pulley 36a when the belt 47 rotates to the right around the revolution pulley 35. Rotational force is transmitted at and the rotation becomes left rotation. Conversely, when the revolution rotation is rotated counterclockwise and the belt 47 rotates counterclockwise around the revolution shaft pulley 35, the rotational force is transmitted to the lower pulley 36b of the two-stage pulley 36 with a one-way clutch, and the rotation is rotated to the right. It becomes rotation. That is, the sample container 44 can be arbitrarily selected as a right rotation or a left rotation by a switching operation by the rotation direction switching means. In FIG. 3, reference numeral 48 denotes a guide roller for the belt 42 that travels between the cylindrical rotation shaft 41 and the rotation force transmission pulley 45 to transmit the rotational force.

In the above configuration apparatus or means, the revolution speed is set to 2000 rpm, and the pulley 36b with the upper one-way clutch set to the rotation speed 1000 rpm is used to prepare a sealing material of 400,000 cps. When the system was stirred at a revolution speed of 600 rpm and a rotation speed of 300 rpm, a uniform dispersion mixing system was prepared. Next, while adding the third additive component, the revolution speed was changed to 2000 rpm, the rotation speed 666 rpm was changed to the lower one-way clutch pulley 36a, and the stirring kneading and defoaming treatment was performed under vacuum. Compared with the revolution / spinning means that does not involve switching between forward and reverse rotation, the time required for stirring and kneading and defoaming processing can be reduced to a fraction of that, and high-quality degassing that does not leave micro-order bubbles. Foam / kneaded material was obtained with good reproducibility. In addition, when the ratio between the revolution speed and the rotation speed and the selected rotation speeds can be displayed on the touch panel, for example, it functions as a universal stirring kneading and defoaming device with a wide selection range every 10 rpm. To do.

Thus, according to the means (method / apparatus) according to the present invention, the selection of the kneading / stirring conditions corresponding to the type and properties of the object to be treated (liquid fluid composition) and the defoaming treatment are facilitated. Yes. That is, high-quality defoamed kneaded material can be mass-produced and provided with high yield while simplifying the simple configuration and operation. For example, it is possible to provide a sealing agent used as a space agent, which is used in the production of a liquid crystal panel and also requires a high defoaming property, at a low cost.

  The top view which shows typically the switching mechanism of the autorotation direction in the defoaming kneading means which concerns on an Example.   The schematic diagram which shows the vector state added to the sample container in the defoaming kneading means which concerns on an Example.   The partial notch sectional view which shows the principal part structure of the defoaming kneading apparatus which concerns on an Example.   The perspective view which shows the principal part structure of the conventional defoaming kneading apparatus.

Explanation of symbols

35 ... Revolution pulley 36 ... Pulley 36a with one-way clutch ... Upper pulley 36b ... Lower pulley 37 ... Motor 38 ... Revolving shaft 39 ... Support 40 ... Revolving arm 41 ... Cylindrical rotation shaft 42 ... Belt 43 ... Rotation Pulley 44 ... Sample container 45 ... Rotating force transmission pulley 46 ... Rotating spindle

Claims (3)

A cylinder with an upper end opening that is mounted on a forward / reverse rotating shaft for revolving, linked to the revolving of the revolving arm extending outward, and tilted on the revolving arm tip side so as to be rotatable. A defoaming / kneading method in which a rotational rotational force is transmitted to a cylindrical rotation shaft, a sample container housed in a cylindrical rotation shaft is rotated while rotating, and an object to be processed in the sample container is defoamed and stirred and kneaded. The rotational force of the revolving rotating shaft is transmitted to the rotating shaft through a pulley with a one-way clutch that can be driven to rotate in one direction with different outer diameters, and the sample container is switched between the clockwise direction and the counterclockwise direction. A defoaming kneading method characterized by rotating the material. A reciprocating rotation shaft of normal / reverse rotation type rotating in a vertical direction rotated by a rotation drive source, a revolving arm fixedly mounted on the upper end side of the revolving rotation shaft, and an inner end of the revolving arm A cylindrical rotating shaft that houses a sample container that is rotatably mounted with an inclination, and a rotational force transmission that is rotatably mounted on the other end of the revolving arm corresponding to the cylindrical rotating shaft. A pulley, a pulley with a one-way clutch that can be rotated in one direction with different outer diameters mounted in two stages on a rotating support shaft below the rotation force transmission pulley, and a rotation for revolution corresponding to the pulley with a one-way clutch A two-stage revolving pulley that is rotatably mounted on the shaft, a pair of belts that are separately mounted between the revolving pulley and the pulley with the one-way clutch, and the rotation of the rotational drive source is selectively selected in any one direction. Cut into Defoaming kneading apparatus characterized by comprising; and a obtain rotation direction switching means. 3. The defoaming kneading apparatus according to claim 2, further comprising means for numerically displaying a coefficient that determines the kneading / dispersing ability obtained from the rotation vector by the rotation motion and the revolution vector by the rotation motion.

Images