JP5911011B2 - High shear processing apparatus and separation method thereof - Google Patents

Description

 The present invention relates to a high shear processing apparatus and a separation method thereof for dispersing and mixing various materials such as polymer materials at a fine level by high shear processing various materials such as polymer materials.

Conventionally, polymer blend extrusion having a dispersed phase of, for example, several tens of nanometers, without adding an extra additive such as a compatibilizing agent, in a blend-based material that does not melt with each other in a stationary place (incompatible) A high shearing machine for manufacturing a product is known (see, for example, Patent Documents 1 and 2).
For example, the high shearing machine described in Patent Literature 1 and Patent Literature 2 includes a heating cylinder that rotatably accommodates an internal feedback screw that is an internal feedback high shear screw.

For example, the high shearing machine 1 shown in FIG. 5 includes a substantially bottomed cylindrical heating tube 2 and an internal feedback screw 3 rotatably accommodated in the heating tube 2. The internal feedback screw 3 is formed in a substantially cylindrical shape, and extends from the center of the outer peripheral surface 5 having the spiral screw blades 4 and the front end surface 6 to the rear base side along the rotation axis O. In addition, a return hole 7 that is curved so as to open to the outer peripheral surface 5 is provided.
A substantially bottomed cylindrical clearance 10 is formed as a resin reservoir between the heating cylinder 2 and the internal feedback screw 3. The clearance 10 includes an outer peripheral clearance 11 that forms a flow path between the outer peripheral surface 5 of the internal feedback screw 3 and the inner peripheral surface 8 of the heating cylinder 2, and the tip surface 6 of the internal feedback screw 3 and the heating cylinder 2. And a tip clearance 13 that constitutes a gap between the bottom surface 12 and the bottom surface 12.

The molten polymer material is supplied from the injection nozzle 14 of the plasticizing unit for melting the polymer material to the outer peripheral clearance 11 in the heating cylinder 2, and the internal feedback screw 3 is rotated at a rotational speed of, for example, 500 to 5000 min ^−1. Rotate at high speed and knead for several seconds.
At the time of kneading, the molten polymer material advances in the outer peripheral clearance 11 while being sheared by the screw blades 4, and the tip clearance 13 between the tip surface 6 of the internal feedback screw 3 and the bottom surface 12 of the heating cylinder 2. To the rear through the return hole 7 of the internal feedback screw 3 and returned to the outer clearance 11 to be circulated.
By this circulation movement, the polymer material in the outer peripheral clearance 11 is repeatedly sheared by the rotating screw blade 4 and nano-dispersed to produce a polymer blend extrudate excellent in heat resistance, mechanical properties, dimensional stability, etc. Like to do.

JP-A-2005-313608 International Publication No. 2010/089997

By the way, in the high shearing machine 1 described above, the widths of the outer peripheral clearance 11 and the tip clearance 13 are strictly controlled because they influence the resin dispersion, mixing quality, and production stress of the high shearing process.
When changing the type of resin material such as a polymer material to be subjected to high shear processing, it is necessary to remove the molten resin that remains or adheres to the clearances 11 and 13 in order to prevent mixing of different materials. was there. Therefore, it is necessary to separate the internal feedback screw 3 and the heating cylinder 2 and clean the remaining resin material. In particular, since the resin tends to remain in the groove surface between the screw blades 4 of the internal feedback screw 3 and in the feedback hole 7, it is necessary to clean and remove the resin adhering to these, or replace the internal feedback screw. It will be necessary.

However, in the conventional high shearing machine 1, in order to separate the heating cylinder 2 and the internal feedback screw 3, it is complicated to disassemble the heating cylinder 2 and take out the internal feedback screw 3. In particular, the heating cylinder 2 has many parts and wirings such as heater wiring for heating at high shear, heating cylinder cooling piping, temperature sensor wiring, resin pressure sensor wiring, etc. It was cumbersome to remove the wiring.
And after removing the resin before adhering to the internal feedback screw 3 or replacing a new screw, the heating cylinder 2 and its related parts and wiring are assembled again to put the internal feedback screw 3 into the stowed state. There is a drawback in that it is necessary to dispose the apparatus and is complicated and time-consuming.

  SUMMARY OF THE INVENTION In view of such problems, the present invention provides a high-shearing apparatus and a method for separating the internal feedback screw and the heating cylinder that can be easily cleaned and replaced without disassembling the heating cylinder. The purpose is to provide.

The high shear processing apparatus according to the present invention is a high shear processing apparatus in which a material is circulated while being sheared to be dispersed and mixed, and a heating cylinder into which the material is introduced and a heating cylinder arranged rotatably. An internal feedback type screw that is provided and communicated with a feedback hole therein, a clearance formed between the heating cylinder and the internal feedback type screw in a circumferential direction and a tip direction to flow the material, an internal feedback type screw, Separating means for moving either one of the heating cylinders in the direction separating the other from the other or in the direction separating them from each other. The heating cylinder is included in the clearance when the heating cylinder and the internal feedback screw are separated. A heating means for melting the material is provided, and the separating means includes a movable slide member that supports an internal feedback screw or a heating cylinder, and a slide member. A moving member for, characterized in that the internal feedback screw is provided with a positioning stopper for stopping positioning the slide member in the inserted position within the heating cylinder.
According to the high shear processing apparatus according to the present invention, when replacing the material to be subjected to high shear processing with another material, the material is in the clearance, the feedback hole, etc. between the internal feedback type screw and the heating cylinder of the high shear processing apparatus. Even if they are attached, the internal feedback screw can be separated from the heating tube by separating either the internal feedback screw or the heating tube from the other by the separating means or by separating both from each other. Therefore, it is possible to easily clean the material attached to the internal feedback screw or replace the internal feedback screw itself to which the material is attached. Moreover, after the cleaning or replacement is completed, the separating material is used to position the internal feedback screw and the heating cylinder so as to have a predetermined clearance, so that the previous material and the new material are not mixed. It can be subjected to high shear processing again.

Moreover, the heating cylinder is, heating means for melting the material contained in the clearance time of the separation of the heating cylinder and the inner feedback type screw that is provided.
According to the high shear processing apparatus according to the present invention, when performing high shear processing by changing the material, the material before replacement adheres to the clearance between the internal feedback screw and the heating cylinder and is solidified. Even when it is difficult to separate the feedback screw and the heating cylinder, the internal feedback screw and the heating cylinder can be easily separated by heating and melting the material between the heating cylinder and the internal feedback screw by the heating means. .

Further, the separating means includes a movable slide member that supports the internal feedback screw or the heating cylinder , a moving member that moves the slide member, and a slide member at a predetermined position where the internal feedback screw is inserted into the heating cylinder. And a stopper for stopping positioning .
When the separating means is provided in the internal feedback screw, the internal feedback screw can be pulled out of the heating cylinder and separated by moving the slide member by moving the moving member and moving the internal feedback screw together. Cleaning to remove material adhering to the mold screw and replacement of the internal feedback screw can be performed easily.

When the separating unit is provided in the heating cylinder, the separating unit includes a movable slide member that supports the heating cylinder, a moving member that moves the sliding member, and a predetermined position in which the heating cylinder accommodates the internal feedback screw. And a stopper for positioning and stopping the slide member.
By moving the slide member with the moving member and moving the heating cylinder integrally, the heating cylinder can be relatively pulled out and separated from the internal feedback screw, so that cleaning or removing the material attached to the internal feedback screw can be performed thereafter. The internal feedback screw can be replaced easily.

In the separation method of the high shear processing apparatus according to the present invention, an internal feedback screw having a feedback hole communicated therein is rotatably arranged in a heating cylinder into which material is introduced, while applying a shearing force. This is a separation method of a high shear processing device that disperses and mixes materials by circulating and kneading, and heating by heating means provided in the heating cylinder when separating the heating cylinder and the internal feedback screw. A step of melting a material contained in a clearance formed in a circumferential direction and a tip direction between the tube and the internal feedback screw, and a step of relatively moving the internal feedback screw and the heating tube to positions apart from each other. It is characterized by that.
According to the separation method of the high shear processing apparatus according to the present invention, the material adheres to the clearance between the heating cylinder and the internal feedback screw and adheres to each other, making it difficult to separate the internal feedback screw and the heating cylinder. However, the material in the clearance can be melted by heating with the heating means, and the internal feedback screw and the heating cylinder can be relatively pulled out and separated. The material attached to the internal feedback screw can be cleaned, the internal feedback screw can be replaced, and the like.

According to the high shear processing apparatus of the present invention, when replacing the material to be high sheared with another material, the separation means separates one of the internal feedback screw and the heating cylinder from the other, or both are mutually connected. By separating, it is possible to easily remove the internal feedback screw from the heating cylinder, clean the material attached to the internal feedback screw, replace the internal feedback screw itself with the material attached, and the like.
Moreover, after the cleaning or replacement is completed, the internal feedback screw and the heating cylinder are fitted to each other to a predetermined position, so that the new material can be subjected to high shear processing again with the previous material removed. it can.

  Further, according to the separation method of the high shear processing apparatus according to the present invention, the material adheres to the clearance between the heating cylinder and the internal feedback screw, and the heating cylinder and the internal feedback screw are fixed to each other. Even if the drawing is difficult, it can be melted by heating with a heating means, and the internal feedback screw and the heating cylinder can be easily separated. Then, after cleaning or replacement of the internal feedback screw is completed, the internal feedback screw can be inserted to a predetermined position in the heating cylinder to be subjected to high shear processing again.

It is principal part explanatory drawing which shows schematic structure of the high shear processing apparatus by 1st embodiment of this invention. It is a principal part enlarged view of the high shear processing apparatus shown in FIG. It is principal part explanatory drawing which shows schematic structure of the high shear processing apparatus by 2nd embodiment. It is principal part explanatory drawing which shows schematic structure of the high shear processing apparatus by 3rd embodiment. It is principal part explanatory drawing which shows the conventional high shear processing apparatus.

Hereinafter, a high shear processing apparatus according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
The high shear processing apparatus 20 according to the first embodiment shown in FIG. 1 disperses the internal structure of the resin to a fine level such as a nano level by, for example, kneading a polymer material in a molten state while applying a high shear stress. To mix.

Examples of the polymer material used in the high shear processing apparatus 20 include blend materials such as an incompatible polymer blend system, a polymer / filler system, and a polymer blend / filler system resin material. Examples of the incompatible polymer blend system include a combination of polyvinylidene fluoride (PVDF) and polyamide 11 (PA11), and a combination of polycarbonate (PC) and polymethyl methacrylate (PMMA). Examples of the polymer / filler system include a combination of polylactic acid and carbon nanotubes (CNT), and examples of the polymer blend / filler system include a combination of PVDF, polyamide 6, and CNT.
In the present invention, the polymer material is not limited to the polymer blend material, and other blend materials, a single molecular material not blended, or the like can be nano-dispersed by high shear. Alternatively, other appropriate materials that are not polymer-based can be used, and this material may be not only fluid or liquid such as resin but also powder or granules.

The high shear processing apparatus 20 according to the present embodiment shown in FIGS. 1 and 2 is configured to supply, for example, a molten polymer that is plasticized by introducing a solid polymer blend resin into a plasticizing unit (not shown) through an injection nozzle 19. The molten resin is nano-dispersed by being injected into the heating cylinder 22 from the supply valve 21a.
The high shear processing apparatus 20 includes a substantially bottomed cylindrical heating cylinder 22 and an internal feedback screw 23 rotatably disposed in the heating cylinder 22. In the high shear processing device 20 according to the present embodiment, the forward direction of the feed direction by the screw 23 in the direction of the central axis O of the internal feedback screw 23 is “front”, “front end”, “tip”, and the opposite side is “ They are used as “back”, “rear end” and “base end”.

The heating cylinder 22 has an inner peripheral surface 25 that accommodates the internal feedback screw 23 and a bottom surface 26 of the inner flange. A discharge valve 27 is formed, and the material subjected to high-speed shearing is discharged from the discharge valve 27 to the outside. Further, a heater 28 is provided as a heating means at an appropriate position of the heating cylinder 22, for example, on the outer peripheral surface. The heater 28 heats the molten resin supplied into the heating cylinder 22 to maintain the fluidity necessary for shearing.
The supply valve 21 provided in the supply port 21a is an automatic opening / closing type capable of controlling the injection amount of the molten resin in accordance with a preset time or the like. Assume that they are linked.

 The internal feedback screw 23 is formed in a substantially cylindrical shape, and has an outer peripheral surface 30 having a spiral screw blade 29 and a tip surface 31 corresponding to the bottom surface 26 of the heating cylinder 22. The internal feedback screw 23 is formed with a feedback hole 34 extending rearward from an inlet 33 formed in the distal end surface 31 along a central axis O that forms the center of rotation. The outer circumferential surface 30 is opened by the discharge port 35 by being gradually spaced apart from one another and branched into one or more to bend. The discharge port 35 of the return hole 34 is provided behind or substantially at the same position as the supply port 21a.

Further, a drive motor 32 such as a servo motor is connected through a bearing block 37 having a built-in bearing for supporting the spindle 36 provided on the rear end side of the internal feedback screw 23. The internal feedback screw 23 is rotated at a high speed, for example, at a rotational speed of 500 to 5000 min ⁻¹ by the drive motor 32, and can be highly sheared while kneading the molten resin.
The internal feedback screw 23 can be attached and detached at a chucking portion 36a provided on the front side of the spindle 36.

An outer peripheral clearance 38 having a substantially cylindrical shape is formed between the outer peripheral surface 30 of the internal feedback screw 23 and the inner peripheral surface 25 of the heating cylinder 22, and the distal end surface 31 of the internal feedback screw 23 and the heating cylinder 22 are formed. A substantially disc-shaped tip clearance 39 is formed between the bottom surface 26 and the bottom surface 26, and communicates with each other as a flow path.
Further, the groove surface 29 a between the screw blades 29 is parallel to the central axis O of the internal feedback screw 23, and the screw on the inner peripheral surface 25 of the heating cylinder 22 and the outer peripheral surface 30 of the internal feedback screw 23 at the outer peripheral clearance 38. A gap between the blades 29 (or the groove surface 29a) is a substantially constant gap S1 over the central axis O direction. A tip clearance 39 constituting a gap between the tip surface 31 of the internal feedback screw 23 and the bottom surface 26 of the heating cylinder 22 has a gap S2 having a substantially constant width.
Therefore, a high shear region is formed by the outer peripheral clearance 38 and the tip clearance 39, that is, the gap S1 and the gap S2.

In the return hole 34, the inflow port 33 is on the upstream side of the molten resin flowing in the return hole 34 during high shear, and the discharge port 35 is on the downstream side. In other words, the molten resin injected into the outer peripheral clearance 38 is sent to the tip side along the groove surface 29 a along with the rotation of the internal feedback screw 23, flows into the return hole 34 from the inlet 33 at the tip clearance 39, and moves backward. It flows and is discharged from the discharge port 35 to the outer peripheral clearance 38, and is circulated again to the tip side along with the rotation of the internal feedback screw 23.
Further, the base end portion 41 of the internal feedback screw 23 is provided at the rear side position outside the range of the outer peripheral clearance 38 where the screw blade 29 is not formed, and is a columnar shape having a larger diameter than the screw blade 29. Has a region. The base end portion can slide in a liquid-tight manner with respect to the inner peripheral surface 25 of the heating cylinder 23.

The heating cylinder 22 is fixed and supported on the base plate 45 by heating cylinder support portions 43 and 44 constituting leg portions. Further, the internal feedback screw 23 is provided with a support block 47 containing a drive motor 32 behind the bearing block 37, and the bearing block 37 and the support block 47 are supported by a slide table 48 as a slide member. . An LM guide 49 slidable with respect to the base plate 45 is mounted on the back surface of the slide table 48.
In addition, the base plate 45 is provided with a positioning stopper 51 for positioning by bringing the end of the slide table 48 into contact with each other, and a table fixing block for fixing the slide table 48 at an arbitrary position behind the positioning stopper 51. 52 is provided.

  The moving direction of the slide table 48 coincides with the central axis O direction of the internal feedback screw 23. The internal feedback screw 23 is accommodated in the heating cylinder 22 at a position where the end portion of the slide table 48 abuts against the positioning stopper 51 and is in a shearing position of the polymer material. Thus, the slide table 48 can be fixed to the positioning stopper 51. By moving the slide table 48 away from the heating cylinder 22, the internal feedback screw 23 is extracted from the heating cylinder 22.

Further, the table fixing block 52 is, for example, substantially L-shaped, and the slide table 48 at an appropriate position can be fixed by tightening the table fixing bolt 54 into the upper flat plate portion.
A handle 55 is attached to the upper surface of the slide table 48. For example, by manually operating the handle 55, the slide table 48 can be moved and the internal feedback screw 23 can be slid.

  In the high shear processing apparatus 20 according to the first embodiment, the slide table 48 that supports the internal feedback screw 23, the LM guide 49 provided on the back surface of the slide table 48, the positioning stopper 51, the table fixing block 52, and the slide The bolts 53 and 54 for fixing the table 48 and the handle 55 constitute separation means.

The high shear processing apparatus 20 according to the present embodiment has the above-described configuration. Next, a method for separating the high shear processing apparatus 20 will be described.
In the high shear processing apparatus 20 shown in FIGS. 1 and 2, for example, a molten resin obtained by plasticizing a polymer material is injected from the injection nozzle 19 into the outer peripheral clearance 38 in the heating cylinder 22 through the supply port 21.
In the high shear processing apparatus 20, the internal feedback type screw 23 in the heating cylinder 22 is rotated at a low speed rotation of, for example, 300 min ⁻¹ or less, and molten resin is injected into the outer periphery and the tip clearances 38 and 39 in the heating cylinder 22. Thus, the outer peripheral clearance 38, the tip clearance 39, and the return hole 34 in the heating cylinder 22 are filled with the molten resin. When the injection of the molten resin is completed, the injection valve 21 is closed.

Next, high shear processing is performed by the high shear processing apparatus 20. In the high shear processing apparatus 20, the internal feedback screw 23 in the heating cylinder 22 is rotated at a high speed. Although the high-speed rotation speed is determined by the resin material to be charged, in this embodiment, the rotation speed is higher than that of the low-speed rotation described above, for example, 500 to 5000 min ⁻¹ , and the outer periphery and tip clearances 38 and 39 and the return hole 34 are rotated. The high-speed rotation of the screw blade 29 causes the sheared resin to circulate the molten resin for a predetermined set time.

  That is, since the molten resin fed from the rear to the front through the outer peripheral clearance 38 gradually increases in resin pressure, it is sheared with a high shear force by the screw blades 29 of the internal feedback screw 23 that rotates at a high speed. The molten resin transferred from the outer peripheral clearance 38 to the tip clearance 39 causes a large pressure loss from the outer peripheral side toward the inlet 33 of the return hole 34 on the central axis O in the tip clearance 39 to cause fluidity. It flows well and flows into the return hole 34 from the inlet 33. In the tip clearance 39, the resin pressure at the inlet 33 is controlled to the lowest pressure.

Thereafter, the molten resin flows backward in the return hole 34, flows out from the discharge port 35 of the return hole 34 to the outer peripheral surface 30 of the internal feedback screw 23 by centrifugal force, and returns to the outer peripheral clearance 38. Then, the molten resin repeats the circulating flow such that the molten resin is transferred to the tip side while being highly sheared by the screw blade 29 in the outer peripheral clearance 38 at a high speed.
Thus, the molten resin is kneaded by the circulating flow and given a high shearing force. By this circulation, the molten resin is nano-dispersed, and the internal structure of the polymer material can be dispersed and mixed at the nano level.

Next, when the set high shear processing time is reached, the rotation speed of the internal feedback screw 23 is switched from high speed rotation to medium speed rotation. The medium speed rotation is a rotation speed region that is larger than the low speed rotation and smaller than the high speed rotation, and is, for example, 200 to 1000 min ⁻¹ . Then, the discharge valve 27 is opened to open the discharge port 27a.
As a result, the nano-dispersed resin in the outer periphery and the tip clearances 38 and 39 is discharged from the discharge port 27a of the heating cylinder 22 along with the rotation of the internal feedback screw 23, and a molten resin of a polymer material is obtained as a polymer blend extrudate. Can do.

When another material is supplied into the high shear processing apparatus 20 for high shear processing, the internal feedback screw 23 is set so as not to be mixed with the material processed before remaining in the outer periphery and the tip clearances 38 and 39. It is necessary to remove the resin extracted from the heating cylinder 22 and remaining.
Therefore, after the rotation of the internal feedback screw 23 is stopped, the slide table 48 is made slidable by loosening the table setting bolt 53 and the table fixing bolt 54 in FIG. Then, for example, when the operator manually pulls the handle 55, the slide table 48 is moved away from the heating cylinder 22, and the position where the internal feedback screw 23 is mounted in the heating cylinder 22 indicated by a solid line is It moves to the position completely pulled out from the heating cylinder 22 shown by a two-dot chain line.

  At this position, the slide table 48 can be stopped by tightening the table fixing bolt 54 into the table fixing block 52. Then, the molten resin or the solidified resin adhering to the groove surface between the screw blades 29 of the internal feedback screw 23 or the feedback hole 34 is cleaned and removed. Alternatively, the chucking portion 36a is loosened and the internal feedback screw 23 is removed and replaced. The inside of the heating cylinder 22 is also cleaned, but since the inside is a substantially cylindrical shape composed of the inner peripheral surface 25 and the bottom surface 26, the resin hardly adheres.

Thereafter, the table fixing bolt 54 is loosened from the table fixing block 52, the slide table 48 is moved in the direction of the heating cylinder 22, and the internal feedback screw 23 is inserted into the heating cylinder 22. The internal feedback screw 23 is inserted and held at a regular position in the heating cylinder 22 at a position where the end of the slide table 48 abuts against the positioning stopper 51. At this position, the table set bolt 53 is fastened to the slide table 48 via the positioning stopper 51. At that position, the slide table 48 is fixed by tightening the table fixing bolt 54 into the table fixing block 52.
Thereafter, even if a new material is introduced into the high shear processing apparatus 20, high shear processing can be performed again without mixing different kinds of materials.

Next, when the material is replaced with another material for high shear processing, the molten resin before remaining in the outer periphery and the tip clearances 38 and 39 is solidified even if the internal feedback screw 23 is pulled out of the heating cylinder 22. In some cases, the internal feedback screw 23 and the heating cylinder 22 are fixed. In this case, even if the handle 55 is operated to move the slide table 48 and the internal feedback screw 23 is pulled out, the solidified resin adheres the heating cylinder 22 and the internal feedback screw 23 and is difficult to pull out. There is a case.
In such a case, the resin solidified by heating the heater 28 provided in the heating cylinder 22 is preferably melted in advance before the internal feedback screw 23 is pulled out. By melting the solidified resin, the internal feedback screw 23 can be easily pulled out by the slide table 48.

As described above, according to the high shearing device 20 and the separation method according to the present embodiment, when the material to be sheared is replaced with another type, the slide table 48 is moved to heat the internal feedback screw 23. By pulling out from the tube 22, cleaning of the resin attached to the internal feedback screw 23, replacement of the internal feedback screw 23 itself to which the resin is attached, and the like can be easily performed. Therefore, when the internal feedback type exchange screw 23 and the heating cylinder 22 are separated, the heating cylinder 22 is disassembled, the heater wiring provided in the heating cylinder 22, the heating cylinder cooling pipe, the temperature sensor wiring, and the resin pressure sensor There is no need to remove wiring components or wiring.
Moreover, after the cleaning or replacement is completed and the remaining resin is removed, the slide table 48 is moved and brought into contact with the positioning stopper 51 to dispose the internal feedback screw 23 in the heating cylinder 22. New materials can be subjected to shearing.

  Further, when the internal feedback screw 23 is pulled out, even if the resin is solidified with the heating cylinder 22, the solidified resin in the heating cylinder 22 is heated and melted by the heater 28 provided in the heating cylinder 22. Thereafter, the internal feedback screw 23 can be easily pulled out.

  As mentioned above, although the high shear processing apparatus 20 by 1st embodiment was demonstrated, this invention is not limited to the above-mentioned embodiment, In the range which does not deviate from the meaning, it can change suitably. Next, other embodiments of the present invention will be described. However, the same or similar members and parts as those of the above-described embodiments are denoted by the same reference numerals, and the description thereof is omitted.

Next, a high shear processing apparatus 60 according to a second embodiment of the present invention will be described with reference to FIG.
In the second embodiment, the internal feedback screw 23 is fixed to the base plate 45 via a bearing block 37 and a support block 47. On the other hand, the heating cylinder support portions 43 and 44 that support the heating cylinder 22 are supported by a movable slide table 61. An LM guide 49 slidable with respect to the base plate 45 is mounted on the back surface of the slide table 61.

Further, the base plate 45 is provided with a table positioning stopper 63 for positioning by contacting a stopper 62 provided at an end of the slide table 61. The table positioning stopper 63 rotatably supports a rotating shaft 65 having a male thread. The distal end portion of the rotation shaft 65 is screwed into a screw hole 62a formed in the stopper 62, and a positioning stopper 68 is fixed to the distal end. A handle 66 is provided at the other end of the rotation shaft 65 with the table positioning stopper 63 interposed therebetween. Further, the rotation shaft 65 is provided with a locking portion 67 that is brought into contact with the table positioning stopper 63.
Then, by rotating the handle 66 of the rotation shaft 65, the slide table 61 can be moved forward (rightward in FIG. 3), and the heating cylinder 22 supported by the slide table 61 extends along the central axis O. It can be moved.
In the high shear processing apparatus 60 according to the second embodiment, the slide table 61, the LM guide 49, the stopper 62, the table positioning stopper 63, the rotating shaft 65, the handle 66, and the positioning stopper 68 constitute a separating means.

Therefore, according to the high shear processing apparatus 60 according to the second embodiment, when exchanging the type of material to be subjected to the high shear processing, the heating cylinder 22 is relative to the internal feedback screw 23 in order to remove the remaining resin. 3, the handle 66 of the rotating shaft 65 is rotated from the solid line position shown in FIG. 3 to be guided by the rotating shaft 65, and the stopper 62 and the slide table 61 are moved. It is pulled out from the internal feedback screw 23 and moved along the central axis O.
As indicated by a two-dot chain line, the stopper 62 of the slide table 61 comes into contact with the table positioning stopper 63 of the rotating shaft 65 at a position where the heating cylinder 22 is pulled out from the internal feedback screw 23 and separated. Stop.

In this state, the molten resin or solidified resin adhering to the groove surface between the screw blades 29 of the internal feedback screw 23, the feedback hole 34, or the like is cleaned and removed. Alternatively, the chucking portion 36a is loosened and the internal feedback screw 23 is removed and replaced.
Next, by rotating the handle 66 in the reverse direction, the stopper 62 and the slide table 61 are moved in the direction of the internal feedback screw 23 while being guided by the rotation shaft 65. The heating cylinder 22 is held at a regular position where high shearing can be performed by inserting the internal feedback screw 23 at a position where the stopper 62 abuts a positioning stopper 68 fixed to the tip of the rotating shaft 65.

  In addition, when the molten resin remaining in the outer periphery and the tip clearances 38 and 39 is solidified and the internal feedback screw 23 and the heating cylinder 22 are fixed, the heater provided in the heating cylinder 22 before the heating cylinder 22 is pulled out. The resin solidified by heating 28 is melted in advance. As a result, the resin is melted and the heating cylinder 22 can be easily pulled out by the slide table 61.

  In each of the above embodiments, only one of the internal feedback screw 23 and the heating cylinder 22 is movable so that the internal feedback screw 23 is pulled out from the heating cylinder 22. Instead of the configuration, as shown in FIG. 4, as the high shear processing apparatus 70 according to the third embodiment, the slide table 48 is arranged so that both the internal feedback screw 23 and the heating cylinder 22 are separated from each other and close to each other. , 61 may be configured to be movable.

In this case, in FIG. 4, as the separation means for moving the internal feedback screw 23 relative to the heating cylinder 22, as in the first embodiment, the LM guide 49 provided on the back surface of the slide table 48 and the slide table 48, positioning A stopper 51, a table fixing block 52, bolts 53 and 54 for fixing these and the slide table 48, and a handle 55 are provided.
Further, as the separating means for moving the heating means 22 from the internal feedback screw 23, as in the second embodiment, the slide table 61, the LM guide 49, the stopper 62, the table positioning stopper 63, the rotating shaft 65, the handle 66, A positioning stopper 68 is provided.

In the high shear processing apparatus 70 according to the present embodiment, the movement strokes of the internal feedback screw 23 and the heating cylinder 22 can be made shorter than those shown in the first and second embodiments.
Further, the heater 28 provided in the heating cylinder 22 may be heated prior to the drawing.

In each of the above-described embodiments, the heater 28 used at the time of shearing and a heater for pulling out the internal feedback screw 23 from the heating cylinder 22 may be provided separately.
In each of the above-described embodiments, the means for moving the slide tables 48 and 61 provided with the LM guide 49 is manually moved as the handle 55 and the handle 66 provided on the rotating shaft 65. The slide tables 48 and 61 may be moved via a transmission mechanism with a possible motor or the like. All of these constitute a moving member.

20, 60, 70 High shearing device 22 Heating cylinder 23 Internal feedback screw 28 Heater 38 Outer peripheral clearance 39 End clearance 45 Base member 48, 61 Slide table 49 LM guide 51, 68 Positioning stopper 55, 66 Handle 62 Stopper 63 Table positioning Stopper 65 rotation axis

Claims (2)

In a high shear processing apparatus in which materials are circulated while being sheared to disperse and mix,
A heating cylinder into which material is introduced;
An internal feedback screw that is rotatably disposed in the heating cylinder and communicates a feedback hole therein;
Clearance between the heating cylinder and the internal feedback screw is formed in the circumferential direction and the tip direction and allows the material to flow,
Separating means for moving either the internal feedback screw and the heating cylinder in a direction to separate from the other or in a direction to separate both from each other ;
The heating cylinder is provided with a heating means for melting the material contained in the clearance when the heating cylinder and the internal feedback screw are separated.
The separating means includes a movable slide member that supports the internal feedback screw or the heating cylinder, a moving member that moves the slide member, and a predetermined position where the internal feedback screw is inserted into the heating cylinder. A high shearing apparatus comprising a positioning stopper for positioning and stopping the slide member . Inside the heating cylinder into which the material is introduced, an internal feedback screw with a return hole communicating therewith is rotatably arranged, and the material is dispersed and mixed by kneading while circulating while applying a shearing force. A separation method for a high shear processing device,
Clearance formed in the circumferential direction and the tip direction between the heating cylinder and the internal feedback screw by heating with heating means provided in the heating cylinder when separating the heating cylinder and the internal feedback screw Melting the material contained in
And a step of relatively moving the internal feedback screw and the heating cylinder to positions separated from each other.

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