JP4873710B2 - Rotating mixing container, pot lid and mixing method - Google Patents

Description

  The present invention relates to a rotary mixing container used for ball milling and kneading, a pot lid used for the container, and a mixing method using them.

  Conventionally, the revolving centrifugal acceleration and the rotational centrifugal acceleration generated in a rotating and rotating mill pot (grinding container) by rotating and revolving planetary motion are given to the ground material and the ground media ball in the mill pot, so that the ground material and the ground media ball become intense. A planetary ball mill is known in which a pulverized product is pulverized by compression and shear caused by collision. The planetary ball mill is characterized by having an extremely excellent grinding speed by a synergistic action of high-speed revolving centrifugal acceleration and rotational centrifugal acceleration.

  The conventional planetary ball mill has a structure in which the rotation axis is arranged in the vertical direction and parallel to the revolution rotation axis. If the rotation axis is in the vertical direction, there is a problem that the grinding efficiency is poor.

  Therefore, as shown in Patent Document 1, a planetary ball mill in which the rotation axis is inclined from the vertical direction has been developed. In this planetary ball mill with an inclined rotation axis, the rotation axis of the mill pot is inclined and the rotation speed of the mill pot due to the contact between the outer peripheral pot holder and the mill pot can be made larger than the revolution rotation speed. The grinding media ball and pulverized product cause a tornado motion that runs while spinning at high speed on the inner surface of the mill pot inclined toward the center of revolution, and the pulverization efficiency is very good due to the pulverization with good fluidity. .

In addition, as shown in Patent Document 2, a pot body in which the rotation axis of the pot body is inclined from the vertical direction is put in a material that is difficult to mix without putting a ball mill, and a kneading container equipped with a pot lid is rotated and rotated. A planetary kneading method is known in which materials that are difficult to mix are rapidly and without kneading by revolving.
JP 2006-43578 A JP-A-8-243371

  However, the planetary ball mill has a very high crushing speed due to the synergistic action of the high-speed revolving centrifugal acceleration and the rotational centrifugal acceleration, but crushes the pulverized material by compression and shear caused by a violent collision between the pulverized material and the grinding media ball. Therefore, there is a problem that the temperature of the pulverized product increases. Depending on the type of pulverized product, there may be a chemical change or a property change caused by an increase in temperature, and pulverization with a planetary ball mill capable of preventing the pulverized product from increasing in temperature is desired.

  Even in the above-mentioned Patent Document 1, a device such as blowing cooling air to the outer peripheral surface of the mill pot is considered. However, since the material of the mill pot is a material having poor thermal conductivity such as zirconia, there is a sufficient cooling effect. I can't say that.

  Further, in the planetary kneading method, materials may be added or the kneading state may be confirmed, but the operation of the planetary kneading device is stopped, the kneading container is taken out, the lid is opened, and after a predetermined work, It is necessary to close the lid, mount the kneading container, and operate the apparatus again. Therefore, there are problems that the kneading work becomes complicated and the working efficiency is poor.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a rotary mixing container that can effectively suppress a temperature rise in a rotary mixing container such as a mill pot and that has good working efficiency.

  Another object of the present invention is to provide a pot lid portion that is used as a lid of such a rotary mixing container and that can effectively suppress a temperature rise in the rotary mixing container and that has good working efficiency. .

  Furthermore, an object of the present invention is to provide a mixing method using a rotary mixing container that can effectively suppress such a temperature rise and has good working efficiency.

In order to achieve the above object, the invention of claim 1 is a bottomed cylindrical shape having a center of rotation, and is detachably attached to a pot body into which a grinding medium ball and pulverized material are placed, and an upper end opening of the pot body. in the mill pot having a pot lid, providing a mill pot, characterized in that an opening is provided in the rotational center vicinity of the pot lid.

In the bottomed cylindrical pot body that rotates at a high speed with the rotation center as the rotation center and the pot lid attached to the pot body, the surface of the crushed material and the contents of the grinding media ball in the pot body is rotated by the centrifugal force. As a minimum surface, the inner wall of the pot body is lifted up. For this reason, it has been found that the contents are in contact with only the outer peripheral portion of the inner surface exposed in the pot body of the pot lid portion that is detachably attached to the pot body. From this knowledge, even if an opening is provided in the vicinity of the rotation center of the pot lid, the content does not leak. By providing an opening in the pot lid, the temperature of high air or gas in the pot through the opening is released to the outside, as a result of low external temperature air flows into the pot, the temperature rise in the mill pot While being able to suppress effectively, the state in a pot main body and the addition of material can be performed easily from an opening part, and work efficiency becomes favorable.

According to a second aspect of the present invention, in the mill pot according to the first aspect , a cylindrical covering portion that is inserted into the pot body so as to surround the entire periphery of the opening portion of the pot lid portion is arranged in the direction of the rotation center. And a mill pot characterized by being provided integrally therewith.

  The cylindrical covering portion inserted into the pot container main body provided in the opening of the pot lid portion can prevent the contents in the rotary mixing container from leaking outside through the opening by surrounding the opening. .

The invention according to claim 3, provides the mill pots according to claim 2, wherein the flange portion protrudes in a direction orthogonal to the rotational center to the distal end of the tubular coating portion is provided mill pot To do.

  By providing the flange portion at the tip of the cylindrical covering portion, it is possible to more effectively prevent the contents scattered from the inner wall of the pot container body from leaking to the outside through the opening.

A fourth aspect of the present invention is the mill pot according to any one of the first to third aspects , comprising a ceramic pot body and a pot lid portion detachably attached to an upper end opening of the pot body via a packing. A mill pot is provided.

In the case of a ball mill , a ceramic excellent in wear resistance is preferably used.

The invention of claim 5 is a pot lid portion that is detachably attached to an upper end opening of a bottomed cylindrical pot body having a rotation center, the opening being provided near the rotation center, and the opening A pot cover portion is provided in which a cylindrical covering portion that is inserted into the pot body so as to surround the entire periphery of the pot is integrally provided in the direction of the rotation center .

The invention of claim 6 is the pot lid of claim 5,
A pot lid portion is provided , wherein a flange portion projecting in a direction orthogonal to the rotation center is provided at a distal end portion of the cylindrical covering portion .

In the bottomed cylindrical pot body that rotates at a high speed with the rotation center as the rotation center, the surface of the contents has a shape that lifts the inner wall of the pot body with the rotation center as the lowest surface by centrifugal force. Therefore, even if an opening is provided in the vicinity of the rotation center of the pot lid, the contents do not leak. By providing the opening, hot air or gas inside the pot body is released to the outside through this opening. As a result of the low temperature outside air flowing into the pot, the temperature rise in the mill pot can be effectively suppressed, and the state of the pot body and the addition of materials can be easily confirmed from the opening, improving work efficiency. Become good.

The invention according to claim 7 is a pot in which a pulverized medium ball and a pulverized material are placed in a bottomed cylindrical pot body having a rotation center, and an opening is provided near the rotation center at an upper end opening of the pot body. Provided is a mixing method characterized in that a mill pot with a detachably mounted lid is rotated with the rotation center as the center of rotation, and the mill pot is revolved.

In this planetary motion mixing method that gives rotation and revolution, there is no risk of the contents leaking even if an opening is provided in the pot lid near the rotation center, and the temperature rise in the mill pot is effectively suppressed through the opening. In addition, it is possible to easily check the state in the pot body and add materials from the opening, and work efficiency is improved.

  According to an eighth aspect of the present invention, there is provided the mixing method according to the seventh aspect, wherein an upper side of the rotation center is inclined to the revolution center side.

  By tilting the upper side of the center of rotation toward the center of revolution, the height of the center of rotation of the center of rotation due to the centrifugal force due to the rotation is lower than the vertical direction, and the content leaks from the opening. The risk of getting out is even less.

  Hereinafter, embodiments of the rotary mixing container, the pot lid portion, and the mixing method of the present invention will be described, but the present invention is not limited to the following embodiments.

  FIG. 1 is a configuration diagram illustrating an outline of a planetary ball mill using the rotating mixing container of the present invention as a mill pot.

  In this planetary ball mill 100, an electric motor 110 is disposed as a drive source on a gantry 101, and a drive shaft 111 of the electric motor 110 projects vertically upward. The drive shaft 111 functions as a revolution shaft that rotates around a revolution center 112 that is the center of the shaft. A substantially central portion of a revolving rotary arm 120 extending in the radial direction is fixed to the drive shaft 111. Both ends of the revolving rotary arm 120 are formed on an inclined support portion 121 bent upward from the horizontal direction at a predetermined inclination angle. A rotating shaft 131 fixed coaxially with the rotation center 133 of the pot receiver 130 at the center of the outer bottom surface of the flat bottom cylindrical pot receiver 130 is rotatably supported (rotated) via a bearing 132. Has been. The pot receiver 130 accommodates a mill pot as a rotary mixing container described later. The rotation (rotation) center 133 of the rotation shaft 131 is inclined at a predetermined inclination angle from the vertical direction to the revolution center 112 side so as to intersect the revolution center 112 on the pot receiver 130.

  A cylindrical peripheral wall 140 is provided on the outer periphery of the gantry 101 so as to surround the electric motor 110 along the revolution track. A ring-shaped support plate 141 is fixed to the upper end edge of the peripheral wall 140, and the inner peripheral edge of the support plate 141 has a circular shape that substantially coincides with the revolution track. An outer peripheral pot receiver 142 made of a ring-shaped elastic material is attached to the inner peripheral edge of the support plate 141. The outer peripheral pot receiver 142 is fixedly disposed above the revolution rotating arm 120 over the entire circumference around the revolution shaft 111. The inner peripheral edge of the outer peripheral pot receiver 142 is on a revolving track where the outer peripheral surface of the pot receiver 130 that revolves as the revolving rotary arm 120 rotates, and is slightly separated from the outer peripheral surface of the stationary pot receiver 130. It is arranged at the position. As an elastic material constituting the outer peripheral pot receiver 142, synthetic rubber such as silicon rubber or urethane rubber, or natural rubber can be used.

  FIG. 6 shows a cross-sectional structure of an example of a conventional mill pot (rotary mixing container). The mill pot 200 is used by being mounted on the pot receiver 130 of the planetary ball mill 100 shown in FIG. 1, and is attached to and detached from a bottomed cylindrical pot body 210 having a rotation center 133 and an upper end opening of the pot body 210. And a pot lid 220 that is freely mounted. The pot body 210 has a cylindrical side wall and a dome-shaped concave bottom wall, and is made of, for example, zirconia. A metal flange portion 211 is fixedly provided on the outer peripheral surface of the upper end opening of the pot body 210. Bolt holes 212 for passing bolts are provided in the flange portion 211 at a plurality of locations, for example, 8 locations. The cylindrical side wall of the pot main body 210 has an outer diameter that can be accommodated in the pot receiver, and the flange portion 211 abuts on the upper edge of the pot receiver 130 so that the pot main body 210 is accommodated in the pot receiver 130. On the other hand, the pot lid portion 220 is a metal disk having the same diameter as the flange portion 211, a circular packing 221 having the same diameter as the cylindrical side wall of the pot body 210 is attached to the lower surface, and the flange portion is provided on the outer peripheral portion. A bolt hole 222 corresponding to the bolt hole 212 of 211 is formed.

  In order to pulverize the pulverized product using the mill pot (rotary mixing container) 200 shown in FIG. 6, the pulverized product and the pulverized medium ball are put into the pot body 210, and the pot lid 220 is opened at the upper end opening of the pot body 210. The bolt holes 212 and 222 are tightened with bolts and nuts (not shown) to fix the pot lid 220 to the pot body 210. As a result, the packing 221 of the pot lid 220 is in close contact with the upper edge of the upper end opening of the pot body 210, the upper end opening of the pot body 210 is closed, and the mill pot 200 is sealed.

  Next, when the electric motor 110 is driven after the mill pot 200 is mounted on the pot receiver 130 of the planetary ball mill 100, the drive shaft 111 of the electric motor 110 rotates as shown in FIG. Accordingly, the revolving rotary arm 120 rotates. As the revolution rotation arm 120 rotates, the pot holder 130 revolves around the revolution center 112. Due to the revolution of the pot holder 130, a revolution acceleration in the radial direction from the revolution center 112 is generated in the pot holder 130, and the pot holder 130 is raised in the vertical direction by the amount of play of the bearing 132 in the centrifugal direction by the revolution centrifugal force. It contacts the outer peripheral pot receiver 142. When the revolving rotating pot receiver 130 comes into contact with the outer peripheral pot receiver 142, the pot receiver 130 rotates about the rotation center 133 of the rotation shaft 131 by friction between the outer peripheral surface of the pot receiver 130 and the outer peripheral pot receiver 142. .

  In this way, the pot receiver 130 rotates around the revolution center 112 while rotating around the rotation center 133 inclined from the vertical direction, performs planetary movement, and the mill pot 200 also performs the same planetary movement. Is. In the planetary ball mill 100 in which the rotation axis is inclined, the rotation speed is determined by the ratio of the inner peripheral diameter of the outer peripheral pot receiver 142 in contact with the pot receiver 130 and the outer peripheral diameter of the pot receiver 130 in contact with the outer peripheral pot receiver 142. Is done. Since the inner peripheral diameter of the outer peripheral pot receiver 142 is several times larger than the outer peripheral diameter of the pot receiver 130, the rotational speed is several times larger than the revolution speed. The ratio of the rotation speed / revolution speed is, for example, about 2 to 8 times. In a planetary ball mill having a vertical rotation axis, for example, the revolution speed is 2000 rpm and the rotation speed is 60 rpm, and the rotation speed is much smaller than the revolution speed.

  In the planetary ball mill 100 in which the rotation axis is inclined, the rotation axis of the mill pot 200 is inclined and the rotation speed of the mill pot 200 due to the contact between the outer peripheral pot receiver 142 and the pot receiver 130 is made larger than the revolution speed. Therefore, the pulverized media balls and the pulverized material in the mill pot 200 cause a flow of a tornado motion that runs while spinning at high speed on the inner surface of the mill pot 200 inclined toward the revolution center of rotation. The grinding efficiency is very good.

  In the conventional mill pot 200, as shown in FIG. 6, the upper end opening of the pot body 210 is sealed with the pot lid portion 220. As well as existing ball mills, planetary ball mill mill pots and planetary kneading kneading containers that rotate and revolve are all sealed due to liquid leakage and sample scattering.

  When the state of the packing 221 of the pot lid 220 after using the conventional mill pot 200 is observed, it is surprising that the outer periphery of the packing 221 exposed on the pot body 210 side is in contact with the contents. It was found that the content was not in contact with the center side. From this knowledge, even if an opening is provided in the vicinity of the rotation center of the pot lid 220, it is presumed that there is no risk of the contents leaking out even during use after being mounted on the planetary ball mill 100, and confirmed by experiments.

  FIG. 2 shows a first embodiment in which the rotary mixing container of the present invention is used as a mill pot of a planetary ball mill. 2A is a top view of an example of the pot lid, FIG. 2B is a longitudinal sectional view passing through the center of the pot lid, FIG. 2C is a sectional view of the pot body, and FIG. It is a longitudinal cross-sectional view which shows the other example which changed the diameter of the opening part of a pot cover part.

  This mill pot (rotary mixing container) 1 has a bottomed cylindrical pot body 2 having a rotation center 133 and a pot lid section 3 that is detachably attached to the upper end opening of the pot body 2. The pot body 2 has a cylindrical side wall 21 and a dome-like bottom wall 22 with a rounded inner bottom, and is made of a ceramic such as alumina, zirconia, or cocoon, or a metal such as stainless steel. A metal flange portion 23 such as stainless steel is fixedly provided on the outer peripheral surface of the upper end opening of the pot body 2. Bolt holes 24 for passing bolts are provided in the flange portion 23 at a plurality of locations, for example, 8 locations. The cylindrical side wall 21 of the pot body 2 has an outer diameter that can be accommodated in the pot receiver 130 of the planetary ball mill 100, and the flange portion 23 abuts on the upper end edge of the pot receiver 130 so that the pot body 2 is mounted on the pot receiver 130. It has become. When the pot body 2 is stored in the pot receiver 130, the rotation center 133 of the pot body 2 coincides with the rotation (rotation) center of the rotation shaft 131 of the planetary ball mill 100.

  On the other hand, the pot lid 3 is made of a metal such as stainless steel, for example, and is coaxial with the disk-shaped main body 31 having the same outer diameter as the flange 23 of the pot main body 2, and a disk-shaped packing receiver 32. Is provided as a step projecting downward integrally with the main body. Further, a circular opening 33 centering on the rotation center 133 of the disc-shaped main body 31 and the packing receiver 32 is provided as a through hole. The cylindrical covering portion 34 inserted into the pot body 2 so as to surround the entire periphery of the lower end of the opening 33 protrudes in a direction coinciding with the rotation center 133 of the pot body 2 and is provided integrally with the packing receiver 32. ing. Further, a flange portion 35 is integrally provided on the entire circumference of the tip of the cylindrical covering portion 34 so as to project in a flange shape in a direction orthogonal to the center of the cylindrical covering portion 34. Bolt holes 36 penetrating the disk-shaped main body 31 are provided at positions corresponding to the bolt holes 24 provided in the pot main body 2 on the outer peripheral portion of the disk-shaped main body 31 of the pot lid portion 3. Further, an O-ring 4 as a packing is fitted on the outer peripheral surface that is the step of the packing receiver 32. It is preferable to prepare a plurality of different inner diameters of the opening 33 such as a pot lid portion 3 ′ shown in FIG.

  FIG. 3 is a conceptual diagram illustrating a pulverization mechanism using the mill pot (rotary mixing container) of the present invention in a planetary ball mill having an inclined rotation axis. In order to pulverize the pulverized material using the mill pot 1, as shown in FIG. 3, the pulverized material P and the pulverizing medium ball B are put into the pot body 2, and the pot lid 3 is opened at the upper end opening of the pot body 2. The mill pot 1 is assembled by putting the bolt 6 over the bolt holes 24 and 36 and tightening the bolt 6 with the nut 7. In this mill pot 1, the O-ring 4 of the pot lid portion 3 is pressed against the upper end portion of the inner surface of the pot body 2, and the contents are prevented from leaking from between the pot lid portion 3 and the pot body 2.

  The assembled mill pot 1 is attached to the pot receiver 130 of the planetary ball mill 100. Next, the electric motor 110 is driven, and as described above, the revolving rotary arm 120 rotates, the pot receiver 130 revolves around the revolving center 112, and the revolving rotating pot receiver 130 is connected to the outer peripheral pot receiver 142. By contact, the pot receiver 130 rotates about the rotation center (rotation center) 133 of the rotation shaft 131 by friction between the outer peripheral surface of the pot receiver 130 and the outer periphery pot receiver 142. The planetary movement of the pot receiver 130 becomes the planetary movement of the mill pot 1 mounted on the pot receiver 130 as it is.

  As shown in FIG. 3, when the mill pot 1 revolves around the revolution center 112, the pulverized material P and the grinding medium ball B inside are strongly pressed against the inner bottom surface and the inner side surface of the pot body 2 by the revolution centrifugal acceleration. . When rotation centrifugal acceleration is applied by rotation rotation several times faster than the revolution rotation at the inclination angle θ of the rotation center 133 of the mill pot, the grinding medium balls B and the pulverized material P move at high speed on the inner surface of the mill pot 1 inclined toward the rotation center 112. It rushes up while spinning at high speed with rotation, and collides violently while causing tornado movement. By such a tornado motion, the pulverized product P and the pulverized medium ball B cause a continuous convection motion. The pulverized product P becomes a fine powder by shearing, pulverization, pulverization, and dispersion due to collision and high compression of the pulverization medium ball B. By such a pulverizing mechanism, the pulverization efficiency is improved by pulverization with good fluidity as compared with a planetary ball mill having no inclination angle θ.

  The inclination angle θ of the rotation center 133 from the vertical direction is not particularly limited, but it is experimentally preferable that the rotation angle is preferably in the range of 15 to 40 degrees, and more preferably in the range of 20 to 35 degrees, from the ease of the tornado motion. Is recognized. At a central tilt angle of 45 degrees, the reason is unknown, but it is recognized that it is difficult to cause tornado movement.

  Further, by having the inclination angle θ, the internal pulverized product P and the pulverized medium ball B are present in the horizontal line indicated by the broken line in FIG. If there is no leakage from the opening 33, the vicinity of the center of rotation 133 at the center of the opening 33 becomes the lowest in the height of the interface due to the subsequent planetary motion, and therefore the content does not leak. That is, since the pulverized medium P and the pulverizing medium ball B are pressed against the inner bottom surface side of the pot body 2, the inner wall of the pot body 2 is lifted by the centrifugal force with the vicinity of the rotation center 133 as the lowest surface. Therefore, the contents are brought into contact with only the outer peripheral portion of the inner surface exposed in the pot body 2 of the pot lid 3 that is detachably attached to the pot body 2. This is apparent from the fact that the contents are in contact with the outer peripheral surface of the packing 221 of the conventional mill pot 200. Therefore, even if the opening 33 is provided in the vicinity of the rotation center 133 of the pot lid 3, the contents do not leak. In addition, the pot cover portion 3 of the present invention has a cylindrical covering portion 34 that surrounds the periphery of the lower end edge of the opening portion 33 so as to protrude around the opening portion 33, and a flange portion 35 projects from the distal end portion of the cylindrical covering portion 34. Even if the splashed contents from the side wall 21 of the pot body 2 or the raised contents reach the outer periphery of the pot lid 3 and scatter, the opening 33 is blocked by the cylindrical covering portion 34 and the flange portion 35. Since it is difficult to enter, the contents are more difficult to leak.

  The mill pot (rotary mixing container) 1 of the present invention is effectively prevented from leaking the contents from the opening 33 by being used in a planetary ball mill having an inclined rotation axis as shown in FIG. However, as long as it rotates at high speed, there is no possibility that the contents leak from the opening 33. Therefore, it can be used for a mill pot of a planetary ball mill having a vertical rotation axis. Furthermore, it can also be used as a rotating mill pot with a horizontal axis as a rotation axis on a roller rotating on a horizontal axis.

  The planetary ball mill 100 has a very high pulverization speed due to the synergistic action of the high-speed revolving centrifugal acceleration and the rotational centrifugal acceleration. However, the planetary ball mill 100 pulverizes the pulverized material by compression and shear caused by a violent collision between the pulverized material and the pulverized media ball. There is a problem that the temperature of the pulverized product increases. By providing the opening 33 in the pot lid 3, air and gas having a high temperature inside the mill pot 1 are released to the outside through the opening 33, and the air having a low external temperature flows into the mill pot 1. The temperature rise in the mill pot 1 can be effectively suppressed. In particular, in the pot body 2 using zirconia, since the thermal conductivity of zirconia is low and relatively thick, the amount of heat generated in the mill pot 1 is difficult to dissipate to the outside, and chemical reactions and other alterations occur due to temperature rise. In the case of an easily pulverized product, conventionally, it could not be finely pulverized by the planetary ball mill 100 using the sealed mill pot 200.

  In addition, gas can be vented through the opening 33, and it becomes possible to quickly discharge a gas that is not preferable as an atmosphere in the mill pot 1 by pulverization. Further, when the additive is added and re-ground, the additive can be quickly added to the mill pot 1 without decomposing the mill pot 1. Furthermore, fine particles pulverized to 10 μm or less tend to solidify, and experience shows that once the pulverized product is solidified, the pulverized media ball B simply rolls on the solidified pulverized product P and the pulverization does not proceed. It is done. In this state, it is effective to stop the operation of the planetary ball mill 100, crush the solid matter of the pulverized product, and then pulverize it again. The object can be crushed, and the pulverization time can be shortened. Furthermore, the sample can be easily taken out and the inside can be observed, and the pulverization can be managed easily and quickly.

  Next, a kneading container used in a planetary motion kneading apparatus as a second embodiment of the rotating mixing container of the present invention will be described with reference to FIG. 4A is a top view of the pot lid, FIG. 4B is a vertical sectional view of the pot lid, and FIG. 4C is a side view of the pot body.

  The planetary kneading apparatus is used, for example, for mixing two-part adhesives, stirring and mixing a solution that dislikes bubbles such as cosmetics and pigment / dye dispersion, and is also called a defoaming kneading apparatus.

  The kneading container 1b shown in FIG. 4 has a resin-made flat bottom cylindrical pot body 2b having a rotation center 133, and a male screw 26 is provided on the outer peripheral surface of the upper end portion of the pot body 2b. The pot main body 2b has a resin pot lid 3b that is detachably attached to the male screw 26 of the upper end opening of the pot body 2b by screwing with a female screw 38 and closes the upper end opening. The rotation center 133 of the pot body 2b is the rotation center in the planetary kneading apparatus. The pot lid portion 3 b is provided with a circular opening 33 centered on the rotation center 133. Examples of the resin constituting the kneading container 1b as the rotary mixing container include olefin resins such as polyethylene and polypropylene, polyamides such as nylon, polyesters such as polyethylene terephthalate, polycarbonate, and methacrylic resins.

  A planetary kneading method using the kneading container 1b will be described with reference to FIG. FIG. 5 is a conceptual diagram showing an outline of the planetary kneading apparatus 300, FIG. 5 (a) shows a state where the operation is stopped, and FIG. 5 (b) shows a state where the operation is in progress.

  The planetary kneading apparatus 300 is configured to drive and rotate a revolution shaft 301 having a revolution center 112 in a vertical direction by a motor (not shown). A horizontal arm 310 extending in the horizontal direction is attached to the revolution shaft 301, and a tip end side of the horizontal arm 310 is formed on an inclined support portion 311 bent upward from the horizontal direction at a predetermined inclination angle. A rotating shaft 321 fixed to the center of the outer bottom surface of the flat bottom cylindrical pot receiver 320 is supported on the inclined support portion 311 so as to be rotatable (spinned). A rotation (rotation) center 133 of the rotation shaft 321 is inclined at a predetermined inclination angle from the vertical direction to the revolution center 112 side so as to intersect the revolution center 112 and the pot receiver 320. The pot receiver 320 accommodates the kneading container 1b. A fixed roller 330 having a cylindrical or truncated cone shape that is coaxial with the revolution shaft 301 and is separated and rounded is fixedly disposed on the revolution shaft 301. At least the surface of the fixed roller 330 on the pot receiver 320 side is covered with a synthetic rubber such as silicon rubber or urethane rubber. Further, the upper end edge of the fixed roller 330 is in contact with the outer surface of the pot receiver 320, and the pot receiver 320 forms a rotation center 133 with its rotation shaft 321 due to friction between the pot receiver 320 and the fixed roller 330 as the horizontal arm 310 rotates. It is designed to rotate around the center.

  A method of kneading the planetary kneading apparatus 300 with the kneading container 1b of the present invention will be described. The kneading material M is put into the pot body 2b of the kneading container 1b, the pot lid 3b having the opening 33 is screwed in, the pot lid 3b is attached to the pot body 2b, the kneading container 1b is assembled, and the assembled kneading container 1b Is mounted on the pot holder 320 of the planetary kneading apparatus 300.

  In the state where the operation is stopped, as shown in FIG. 5A, the interface of the kneading material M is almost horizontal. However, if attention is paid to the amount of the kneading material M to be added, the kneading material M is mixed into the mixed container 1b. There is no leakage from the opening 33.

  Next, a motor (not shown) is driven to rotate the horizontal arm 310 to revolve the kneading container 1b. At the same time, the pot receiver 320 and the kneading container 1b in the pot receiver 320 and the kneading container 1b in the pot receiver 320 and the fixed roller 330 are rotated about the rotation center (rotation center) 133 of the rotation shaft 321 along with the revolution. When the kneading container 1b undergoes revolution and rotation, as shown in FIG. 5 (b), the surface of the kneading material M becomes a shape that lifts the inner wall of the pot body 2b with the rotation center 133 as the lowest surface by centrifugal force. . Therefore, during operation, the kneading material M does not leak from the opening 33 near the rotation center 133 of the pot lid 3b.

  As the kneading container 1b revolves, the internal kneading material M is strongly pressed against the inner bottom surface and the inner side surface of the kneading container 1b by the revolution centrifugal acceleration. When rotation centrifugal acceleration is applied at an inclination angle of the rotation axis 321 of the kneading vessel 1b, the inner surface of the kneading vessel 1b inclined toward the revolution center 112 runs up while spinning at a high speed, causing a tornado motion. However, it is vigorously stirred and kneaded.

  When the rotary mixing container of the present invention is used as the kneading container 1b, the opening 33 is provided in the pot lid 3b, so that the gas generated during kneading can be removed, the kneading state can be confirmed without removing the pot lid 3b. Operations such as addition of kneading materials can be performed, and work efficiency can be improved.

  In the planetary kneading apparatus described above, an example in which the rotation axis is inclined is shown, but the kneading container of the present invention can be used even if the rotation axis is in the vertical direction.

  Further, in the above-described example, the opening provided in the pot lid is described as a circle having the same center as the rotation center. However, if only degassing and temperature rise are suppressed, a plurality of small openings are provided. There may be provided, for example, there is no restriction | limiting in the aspect of an opening part, such as arranging in a grid | lattice form or arranging in a concentric form.

  Further, in the above description, when used as a mill pot, the bottom wall is described as a dome shape with a rounded inner bottom surface, but the bottom wall may of course be a plane.

  Furthermore, in the above description, the apparatus shown in FIG. 1 is described as being used as a ball mill. However, the apparatus in FIG. 1 can also be used as a planetary kneading apparatus, and the kneading container shown in FIG. You may make it knead | wear by attaching to the pot receiver of 1 apparatus. Conversely, the kneading apparatus shown in FIG. 5 can be used as a planetary ball mill, and the mill pot shown in FIG. 2 can be mounted on the pot receiver of the apparatus shown in FIG. 5 and pulverized.

The rotary mixing container of the present invention can be used for the purpose of pulverizing as a mill pot used in a planetary ball mill and mixing two or more materials as a kneading container used in a planetary kneading apparatus.
The pot lid portion of the present invention can be used as a lid for such a rotary mixing container.
The mixing method of the present invention can be used for fine pulverization, mixing of materials, and the like using such a rotary mixing container.

It is a block diagram explaining the outline | summary of the planetary ball mill which uses the rotation mixing container of this invention as a mill pot. 1 shows a first embodiment in which a rotating mixing container of the present invention is used as a mill pot of a planetary ball mill, (a) is a top view of an example of a pot lid portion, (b) is a longitudinal sectional view passing through the center of the pot lid portion, (c) ) Is a cross-sectional view of the pot body, and (d) is a vertical cross-sectional view showing another example in which the diameter of the opening of the pot lid is changed. It is a conceptual diagram explaining the grinding | pulverization mechanism using the rotation mixing container of this invention for the planetary ball mill in which the rotating shaft inclined. 2 shows a second embodiment in which the rotating mixing container of the present invention is used as a kneading container, (a) is a top view of the pot lid, (b) is a vertical sectional view of the pot lid, and (c) is a side view of the pot body. It is. It is a conceptual diagram which shows the outline | summary of a planetary-motion kneading apparatus, (a) has shown the state which has stopped driving | operation, (b) has shown the state under driving | operation. It is sectional structure which shows an example of the conventional mill pot (rotary mixing container).

Explanation of symbols

1: Mill pot (rotary mixing container)
1b: Kneading container (rotary mixing container)
2, 2b: Pot body 3, 3b: Pot lid part 33: Opening part 34: Tubular covering part 35: Ridge part 100: Planetary ball mill 112: Revolution center 130: Pot receiver 133: Center of rotation (rotation) 200: Conventional Mill pot 300: Planetary kneading device

Claims (8)

A bottomed cylindrical shape having a center of rotation, in the mill pot having a pot body which put the grinding medium balls and pulverized, and a pot lid that is removably attached to the upper end opening portion of the pot body,
A mill pot, wherein an opening is provided near the rotation center of the pot lid. The mill pot according to claim 1, wherein
A mill pot characterized in that a cylindrical covering portion that is inserted into the pot body so as to surround the entire periphery of the opening portion of the pot lid portion is provided integrally with the pot lid portion in the rotation center direction. The mill pot according to claim 2, wherein
A mill pot characterized in that a flange portion projecting in a direction perpendicular to the rotation center is provided at a tip end portion of the cylindrical covering portion. In the mill pot in any one of Claims 1-3,
A mill pot comprising: a ceramic pot body; and a pot lid portion detachably attached to an upper end opening of the pot body via a packing. A pot lid portion detachably attached to an upper end opening of a bottomed cylindrical pot body having a rotation center , wherein an opening is provided in the vicinity of the rotation center, and surrounds the entire periphery of the opening. A pot lid part, characterized in that a cylindrical covering part inserted into the pot body is integrally provided in the direction of the rotation center . The pot lid according to claim 5,
A pot lid part, characterized in that a flange part projecting in a direction perpendicular to the rotation center is provided at a tip part of the cylindrical covering part. Place the grinding media ball and crushed material in a bottomed cylindrical pot body with a center of rotation, and detachably attach a pot lid with an opening near the center of rotation to the upper end opening of the pot body mixing method of the mill pot, it is rotated as the rotation around the rotation center, and wherein the revolving of the mill pot. The mixing method according to claim 7, wherein
A mixing method, wherein an upper side of the rotation center is inclined toward the revolution center side.

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