WO2014030598A1 - 混練ロータ及び混練機 - Google Patents
混練ロータ及び混練機 Download PDFInfo
- Publication number
- WO2014030598A1 WO2014030598A1 PCT/JP2013/072017 JP2013072017W WO2014030598A1 WO 2014030598 A1 WO2014030598 A1 WO 2014030598A1 JP 2013072017 W JP2013072017 W JP 2013072017W WO 2014030598 A1 WO2014030598 A1 WO 2014030598A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- kneading
- rotor
- kneading rotor
- flight
- diameter
- Prior art date
Links
- 238000004898 kneading Methods 0.000 title claims abstract description 201
- 239000000463 material Substances 0.000 claims abstract description 60
- 230000010006 flight Effects 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000010008 shearing Methods 0.000 description 8
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000002952 polymeric resin Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/07—Stirrers characterised by their mounting on the shaft
- B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
- B01F27/0722—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis perpendicular with respect to the rotating axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/72—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices
- B01F27/721—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two or more helices in the same receptacle
- B01F27/722—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with helices or sections of helices with two or more helices in the same receptacle the helices closely surrounded by a casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/40—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft
- B29B7/42—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix
- B29B7/426—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with single shaft with screw or helix with consecutive casings or screws, e.g. for charging, discharging, mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/465—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft each shaft comprising rotor parts of the Banbury type in addition to screw parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/482—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws provided with screw parts in addition to other mixing parts, e.g. paddles, gears, discs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/487—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws with consecutive casings or screws, e.g. for feeding, discharging, mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/34—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices
- B29B7/38—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary
- B29B7/46—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft
- B29B7/48—Mixing; Kneading continuous, with mechanical mixing or kneading devices with movable mixing or kneading devices rotary with more than one shaft with intermeshing devices, e.g. screws
- B29B7/488—Parts, e.g. casings, sealings; Accessories, e.g. flow controlling or throttling devices
- B29B7/489—Screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/50—Details of extruders
- B29C48/505—Screws
- B29C48/57—Screws provided with kneading disc-like elements, e.g. with oval-shaped elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/2805—Mixing plastics, polymer material ingredients, monomers or oligomers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/268—Throttling of the flow, e.g. for cooperating with plasticising elements or for degassing
Definitions
- the present invention relates to a kneading rotor and a kneading machine capable of kneading while suppressing a temperature rise of a material.
- a kneader such as a continuous kneader or an extruder
- materials such as polymer resin pellets and powder additives are supplied into a barrel and a pair of kneading rotors inserted into the barrel are rotated.
- the material in the barrel is kneaded.
- the kneading rotor is provided with a plurality of kneading flights for kneading materials, and when the kneading rotor is rotated, the material in the barrel is sheared so as to be torn by the kneading flights. Therefore, a kneading flight having a cross-sectional shape suitable for shearing a material is generally provided in a kneading rotor of a kneading machine.
- FIG. 4 of Patent Document 1 discloses a kneading rotor having a kneading flight suitable for shearing material.
- a kneading rotor having substantially the same shape as the kneading rotor shown in FIG. 4 of Patent Document 1 is shown as a conventional example 1 in FIG.
- the kneading rotor of Patent Document 1 (conventional example 1) has three kneading flights around the axis oriented in the horizontal direction, and each kneading flight is on the outside of the diameter. It has a triangular cross-sectional shape that protrudes toward it.
- the tip of the kneading flight is a portion called a tip portion, and is located near the inner peripheral surface of the barrel.
- a narrow gap is provided between the tip portion and the inner peripheral surface of the barrel.
- the kneading flight has a surface inclined so as to be continuously connected to the side of the tip portion.
- the surface facing the material when the kneading rotor rotates is the attack surface.
- This convex attack surface is not so inclined with respect to the inner wall surface of the barrel, and the distance from the surface of the kneading flight to the inner wall surface of the barrel is relatively short.
- a shear flow is predominantly generated in the material in the barrel, and a great shear force is applied to the material. It will be. Therefore, an increase in material temperature cannot be avoided.
- the present invention has been made in view of the above-described problems, and an object of the present invention is to provide a kneading rotor and a kneading machine that can reliably suppress a temperature rise and a local temperature variation in the material.
- the kneading rotor of the present invention employs the following technical means. That is, the kneading rotor of the present invention is a kneading rotor that is rotatably arranged around an axis that faces in the horizontal direction and includes at least two kneading flights that knead the material around the axis. A cross-section perpendicular to the axis of the kneading rotor is provided with a facing surface facing the material when the kneading rotor is rotated, and a part of the facing surface is provided on the receiving surface of the kneading flight. A concave portion that is recessed toward the inside of the diameter is formed.
- the convex portion in which a part of the surface of the kneading flight protrudes radially outward between the kneading flights adjacent to each other in the circumferential direction. It is good to have formed the said recessed part between the chip
- the outer peripheral surface of the said convex part is good to be formed in the cylindrical surface shape which makes the centerline the axial center of the said kneading rotor.
- the diameter from the axis of the kneading rotor to the top of the convex portion is 0.6 times or more than the diameter from the axis of the kneading rotor to the tip of the kneading flight. It is good that the convex part is formed.
- the kneading machine of the present invention is characterized by including the above-described kneading rotor and a barrel having a through hole through which the kneading rotor can be inserted.
- the kneading rotor and the kneading machine of the present invention it is possible to reliably suppress the temperature rise with respect to the material and the local temperature variation within the material.
- the value of dr / db is 0.85 for both. It is a figure which shows the cross-sectional shape of the kneading
- the value of dr / db is 0.98 for all. It is the figure which compared the influence which it has on the temperature rise per rotation with an Example and a prior art example, (a) is the value of dr / db when the value of dr / db is 0.85, (b) is the value of dr / db. The result when 0.98 is shown.
- FIG. 1 shows a kneading machine 2 (kneading machine 2 of the first embodiment) provided with the kneading rotor 1 of the first embodiment.
- the kneader 2 of the first embodiment kneads materials such as polymer resin pellets and powder additives, and includes a kneading rotor 1 for kneading the materials.
- the kneading machine 2 of the present invention is described by taking, as an example, a bi-directional rotating kneading machine having two kneading rotors 1 rotating in different directions.
- a bi-axial continuous kneader of the same direction rotation type in addition to the bi-directional continuous kneader of the opposite direction rotation type, a bi-axial continuous kneader of the same direction rotation type, a biaxial extruder, a batch type kneader, etc. Can also be used.
- the kneading machine 2 includes a barrel 3 having a hollow inside, and a pair of left and right kneading rotors 1 and 1 accommodated in the barrel 3. Inside the barrel 3, two circular holes 4 capable of accommodating the kneading rotor 1 are drilled in parallel. The two circular holes 4, 4 are configured such that part of their inner wall surfaces overlap each other, and the material can be moved from one circular hole 4 to the other. One kneading rotor 1 is inserted through each of the two circular holes 4 and 4.
- the kneading machine 2 is a two-shaft type having a total of two kneading rotors 1.
- the left side of the paper surface of FIG. 1 is referred to as the upstream side when describing the kneading rotor 1 and the kneading machine 2, and the right side of the paper surface is referred to as the downstream side.
- the left-right direction of the paper surface of FIG. 1 is called an axial direction when the kneading rotor 1 and the kneading machine 2 are described, and a direction perpendicular to the axial direction is called an axial vertical direction.
- the direction away from the axis with reference to the axis is referred to as the radially outer side
- the direction approaching the axis is referred to as the radially inner side.
- the barrel 3 is formed in the long cylinder shape along the horizontal direction.
- the two circular holes 4 and 4 are formed in parallel so as to face from upstream to downstream (axial direction).
- a hopper 5 for supplying material into the barrel 3 is provided on the middle side in the axial direction of the barrel 3.
- the circular hole 4 is a substantially cylindrical lateral hole formed by hollowing out the inside of the barrel 3 in the horizontal direction, and the cross section along the direction perpendicular to the axis is substantially circular.
- a pair of right and left circular holes 4 are provided in parallel in the horizontal direction, and have a so-called “glass hole shape” in which part of the inner wall surfaces overlap each other.
- the kneading rotor 1 kneads the material supplied into the barrel 3 and is formed in an elongated shape along the axial direction.
- the kneading rotor 1 is provided in a pair of left and right, and is inserted through the pair of circular holes 4 described above.
- the left kneading rotor 1 rotates clockwise when viewed from the upstream side, and the right kneading rotor 1 rotates counterclockwise.
- the kneading rotor 1 is formed by combining various types of segments in the axial direction, and a plurality of rotor segments 6 (kneading segments) are provided in the middle of the axial direction.
- the rotor segment 6 is particularly suitable for kneading among various types of segments.
- the rotor segment 6 is formed in a triangular shape having a distorted cross section along the direction perpendicular to the axis, and has three kneading flights 7 having a pointed tip toward the radially outer side around the axis. These kneading flights 7 have a tip portion 8 facing the inner wall surface of the barrel 3 at a sharp tip.
- each kneading flight 7 rotates so as to squeeze the inner wall surface of the barrel 3, and the material adhering to the inner wall surface of the barrel 3 can be scraped off without leaving any material. ing.
- each kneading flight 7 of the kneading rotor 1 described above is provided with a receiving surface 9 inclined so as to face the material when the kneading rotor 1 rotates.
- the attacking surface 9 is formed to be continuous in the circumferential direction with respect to the tip portion 8 of the kneading flight 7, and in the case of the kneading rotor 1 on the left side of FIGS. 2 (a) to 2 (c), the tip is formed. It is provided adjacent to the clockwise direction (rotation direction) when viewed from the portion 8.
- the attacking surface 9 can have various shapes and inclination angles as shown in FIGS. 2 (a) to 2 (c).
- the attacking surface 109 is a surface inclined with respect to the inner wall surface of the barrel through-hole 104 at the position indicated by a circle in the drawing. Is formed.
- the attacking surface 109 of the conventional example 1 is formed in a convex shape curved so as to protrude outward (outer peripheral side), and has a very large inclination angle with respect to the inner wall surface of the through hole 104 of the barrel. I do not have. That is, the attacking surface 109 has an inclination angle along the inner wall surface of the circular hole 104 of the barrel.
- the amount of the contact surface 109 and the barrel circular hole 104 is increased by the amount of the convex surface 109 protruding toward the inner wall surface (outer diameter) of the barrel circular hole 104.
- the distance between the inner wall surface is small.
- the attacking surface 209 is a surface inclined with respect to the inner wall surface of the barrel through-hole 204 at the position indicated by a circle in the drawing. Is formed.
- the point of difference between the attacking surface 209 of Conventional Example 2 and Conventional Example 1 is that the attacking surface 209 of Conventional Example 2 is a flat surface that connects the tip portions 208 of two kneading flights 207 adjacent in the circumferential direction in the shortest distance. It is the point formed in the shape.
- the attack surface 209 of the conventional example 2 does not protrude outward in the radial direction as in the conventional example 1, and has a large inclination angle with respect to the inner wall surface of the through hole 204 of the barrel.
- the portion where the distance between the inner wall surface of the barrel circular hole 204 and the surface of the kneading flight 207 becomes smaller than that of the conventional example 1 by the amount that the attacking surface 209 has a large inclination angle is reduced to the material.
- the shearing force applied is also smaller than that in Conventional Example 1. Therefore, when the kneading rotor 201 of Conventional Example 2 is used, an increase in material temperature can be suppressed.
- the rotor gap L2 formed between the left and right kneading rotors 201 is the same as that of the conventional example because the attacking surface 109 does not protrude outward in the diameter. It becomes larger than the rotor gap L1 formed between the left and right kneading rotors 101.
- the shearing force applied to the material greatly fluctuates, and local temperature variations within the material also increase.
- a concave portion 10 is formed on the attacking surface 9 of the kneading flight 7 so that a part of the attacking surface 9 is recessed toward the radially inner side. Yes. If such a concave portion 10 is formed on the attacking surface 9, the distance between the inner wall surface of the circular hole 4 of the barrel 3 and the surface of the kneading flight 7 is increased by the amount of the concave portion 10 provided to the material. The shearing force that is generated can be reduced to suppress an increase in material temperature.
- the surface of the kneading flight 7 other than the place where the concave portion 10 is formed can be protruded to the outside of the diameter, the rotor gap formed between the left and right kneading rotors 1 can be reduced. It is also possible to suppress local temperature variations.
- the kneading rotor 1 of the first embodiment includes a kneading flight 7 between the kneading flights 7 and 7 adjacent to each other in the circumferential direction in a cross section perpendicular to the axis of the kneading rotor 1.
- a convex portion 11 is formed in which a part of the surface of the kneading flight 7 protrudes toward the outside of the diameter. And by providing this convex part 11, the space
- the attack surface 9, the convex part 11, and the concave part 10 formed in the kneading flight 7 of the kneading rotor 1 of the first embodiment will be described in more detail.
- the attacking surface 9 is a surface inclined so as to face the material when the kneading rotor 1 rotates, and is adjacent to the tip portion 8 in a circumferential direction (adjacent to the tip portion 8). Position).
- the attacking surface 9 is formed so as to be inclined with respect to the circumferential direction, and the material in the barrel 3 comes into contact with the kneading rotor 1 as it rotates.
- the convex portion 11 is a part of the surface of the kneading flight 7 protruding outward in the radial direction, and its outer peripheral surface is formed in a cylindrical surface shape with the axial center of the kneading rotor 1 as the center line.
- the convex portion 11 has an arc shape with the axis of the kneading rotor 1 as the center of curvature, and has a diameter larger than a straight line connecting the tip portions 8 adjacent in the circumferential direction. It bulges so as to project outward.
- the concave portion 10 is formed in a concave shape by forming the convex portion 11 described above.
- the recessed portion 10 is recessed toward the inside of the diameter from a reference line S (a straight line indicated by a one-dot chain line in the drawing) connecting the tip portion 8 of the kneading flight 7 and the top portion 11 ′ (tip) of the protruding portion 11 described above. It is like that.
- a reference line S a straight line indicated by a one-dot chain line in the drawing
- the convex portion 11 has a diameter from the axial center of the kneading rotor 1 to the top portion 11 ′ of the convex portion 11 that is 0.6 times or more the diameter from the axial center of the kneading rotor 1 to the tip portion 8 of the kneading flight 7. It is preferable to be formed so that
- the amount of protrusion of the protrusion 11 in other words, the diameter from the axial center of the kneading rotor 1 to the top 11 ′ of the protrusion 11
- the inner diameter of the barrel 3 that is, the diameter of the inner wall surface of the circular hole 4 of the barrel 3 is defined as db.
- dr is the maximum outer diameter of the kneading rotor 1, that is, twice the distance from the axial center of the kneading rotor 1 to the tip portion 8 (the top of the flight).
- the ds / dr in the conventional example 1 is 0.55 ⁇ 0.6 ⁇ 0.
- the temperature rise in the example remains small as 0.5 ° C. to 0.6 ° C. even if ds / dr increases from 0.55 ⁇ 0.6 ⁇ 0.72. It does not become as great as the temperature rise in Conventional Example 1.
- ds indicates the radius of a circle inscribed in the outline of the kneading rotor 14.
- the variation in the temperature of the conventional example 1 exceeds 0.11 degrees, whereas the variation in the conventional example 1 is ds / As dr increases from 0.55 to 0.6 to 0.72, the variation decreases from 0.09 ° C. to 0.10 ° C. in all cases.
- the temperature variation when ds / dr is 0.55, the temperature variation is as large as 0.11 ° C., but when ds / dr is 0.6 or 0.72, the temperature variation is 0.085 ° C. The temperature variation is smaller than that of the conventional example 1.
- the kneading rotor 1 of the example can suppress the temperature rise with respect to the material and the temperature variation in the material than the result of the conventional example 2. From the above, it is determined that the use of the kneading rotor 1 of the first embodiment can surely suppress the temperature rise of the material and the local temperature variation in the material.
- FIG. 8 shows a cross-sectional view of the kneading rotor of the second embodiment.
- the cross-sectional shape of the attacking surface 9 is wavy, unlike the simple concave receiving surface 9 as in the first embodiment.
- the attacking surface 9 is formed so as to have such complicated irregularities. That is, the first convex portion 11a provided on the side close to the tip portion 8 and the second convex portion 11b provided on the side far from the tip portion 8 are provided on the receiving surface 9 of the kneading flight 7 of the second embodiment. There is.
- a concave portion 10 is formed between the first convex portion 11a and the second convex portion 11b.
- the attacking surface 9 of the kneading flight 7 of the second embodiment has a reference line P (one point in the figure) that connects the tip portions 8 adjacent to each other in the circumferential direction in a cross section perpendicular to the axis of the kneading rotor 1. It is curved in the vicinity of the tip portion 8 so as to protrude outward from the chain line. The portion curved toward the outside of the diameter is the first convex portion 11a. On the side of the first convex portion 11a, a second convex portion 11b is formed that protrudes greatly outward in diameter from the first convex portion 11a, and the first convex portion 11a and the second convex portion are formed. A portion that is gently recessed toward the inside of the diameter provided between 11 b and 11 b is a recess 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
Description
この混練ロータには材料を混練する混練フライトが軸心回りに複数本設けられており、混練ロータを回転させると、バレル内の材料が混練フライトで引き裂かれるようにせん断される。それゆえ、混練機の混練ロータには、材料をせん断するのに適した断面形状を有する混練フライトが一般に設けられている。
図2(b)に示すように、特許文献1(従来例1)の混練ロータは、水平方向を向く軸心回りに3本の混練フライトを有しており、それぞれの混練フライトは径外側に向かって突出するような三角形状の断面形状を有する。この混練フライトの突端はチップ部と呼ばれる部分であり、バレルの内周面の近くに位置している。そして、このチップ部とバレルの内周面との間には狭い隙間が設けられており、この隙間に材料を導き入れることで、材料にせん断力を付与する機構となっている。
例えば、特許文献1の第4図に示される混練ロータ、言い換えれば本明細書の図2(b)に示すような断面形状を備える混練ロータでは、迎え面は、図中に丸印で示されるように径外方向に向かって凸状となっている。この凸状の迎え面は、バレルの内壁面に対してあまり傾斜しておらず、混練フライトの表面からバレルの内壁面までの距離が比較的短い。このようなバレルの内壁面までの距離が小さくなるような箇所が多い混練フライトを用いた場合、バレル内の材料にはせん断流が支配的に発生し、材料に多大なせん断力が付与されることになる。したがって、材料温度の上昇を避けることができなくなる。
本発明は、上述の問題に鑑みてなされたものであり、材料に対する温度上昇及び材料内での局部的な温度のバラツキを確実に抑制することができる混練ロータ及び混練機を提供することを目的とする。
即ち、本発明の混練ロータは、 水平方向を向く軸心回りに回転自在に配備され、材料を混練する混練フライトを前記軸心回りに少なくとも2本以上備える混練ロータであって、前記混練フライトは、前記混練ロータの前記軸心と垂直な断面において、前記混練ロータが回転した際に材料に対して向かい合う迎え面を備えており、前記混練フライトの迎え面には、前記迎え面の一部が径内側に向かって凹んだ凹部が形成されていることを特徴とする。
なお、好ましくは、前記凸部の外周面は、前記混練ロータの軸心を中心線とする円筒面状に形成されているとよい。
一方、本発明の混練機は、上述した混練ロータと、この混練ロータを挿通可能な円通孔を貫通状に有するバレルと、を備えていることを特徴とする。
図1は、第1実施形態の混練ロータ1が設けられた混練機2(第1実施形態の混練機2)を示している。
図1に示すように、第1実施形態の混練機2は、高分子樹脂のペレットや粉状の添加物などの材料を混練するものであり、材料を混練する混練ロータ1を備えている。第1実施形態では、互いに異方向に回転する混練ロータ1を2軸備えた異方向回転型の2軸の連続混練機を例に挙げて、本発明の混練機2を説明している。なお、本発明の混練機2としては、異方向回転型の2軸連続混練機以外にも、同方向回転型の2軸連続混練機や、2軸の押出機、あるいはバッチ式の混練機などを用いることもできる。
円通孔4は、バレル3の内部を水平方向に向かってくり抜くことにより形成された略円筒状の横穴であり、その軸垂直方向に沿った断面は略円形とされている。円通孔4は、水平方向に平行に並んで左右一対設けられており、その内壁面の一部が互いに重なり合うような、いわゆる「めがね孔状」となっている。
ロータセグメント6は、さまざまな種類のセグメントの中でも特に混練に適したものである。ロータセグメント6は、軸垂直方向に沿った断面が歪んだ三角形のような形状に形成されており、径外側に向かって先端が尖った混練フライト7を軸心回りに3本有している。これらの混練フライト7は、尖った先端にバレル3の内壁面と対向するチップ部8を有している。混練ロータ1が回転すると、各混練フライト7のチップ部8がバレル3の内壁面をかすめるように回転し、バレル3の内壁面に付着した材料を残さず掻き取って材料を混練できるようになっている。
迎え面9は、図3に丸印で示されるように、混練ロータ1が回転した際に材料に向かい合うように傾斜した面であり、チップ部8に対して周方向に連続した位置(隣接した位置)に形成されている。この迎え面9は、周方向に対して傾斜するように形成されていて、混練ロータ1が回転するとバレル3内の材料が接触するようになっている。
ところで、上述したようにチップ部8の間に凸部11を形成することで、凸になっていない部分を凹部10とするにしても、形成する凸部11の突出量が小さすぎては十分に凹んだ凹部10は得られなくなる。それゆえ、凸部11は、混練ロータ1の軸心から凸部11の頂部11’までの径が、混練ロータ1の軸心から混練フライト7のチップ部8までの径の0.6倍以上となるように形成されることが好ましい。
例えば、バレル3の内径、つまりバレル3の円通孔4の内壁面の直径をdbとする。また、混練ロータ1の最大外径、つまり混練ロータ1の軸心からチップ部8(フライトの頂部)までの距離の2倍をdrとする。そして、これらのdbとdrとの比(dr/db)が0.85となるような混練ロータ1を、図4(a)~図4(c)に示すように3種類考える。
ところが、図4(b)に示すように、凸部11の外径dsが混練ロータ1の最大外径drの0.6倍(ds/dr=0.6)になると、凸部11とチップ部8の間に形成される凹部10は非常に浅く、はっきりとした凹状と言いにくい状態となる。
上述した図4(a)~図4(c)に示すような凸部11の外径dsと凹部10との対応関係は、混練フライト7のチップ部8とバレル3の内壁面との間の距離がより小さくなっても、言い換えればdbとdrとの比(dr/db)が0.98となるような混練ロータ1に関しても成立する。
ところが、図5(b)に示すように、凸部11の外径dsが混練ロータ1の最大外径drの0.55倍(ds/dr=0.55)になると、凸部11とチップ部8の間に確認される形状が凹状とは言えなくなる。すなわち、凹部10が確認できなくなる。
図6(a)(b)は、従来例1、2及び実施例の混練ロータ1を1回転させた際に、1回転当たりに材料がどの程度温度上昇するかを計測した結果を示す。また、図7(a)(b)は、材料温度のバレル3内でのバラツキを、計測温度の標準偏差として計測した結果を示す。なお、図6(a)図7(a)は、比(dr/db)が0.85の結果であり、図6(b)図7(b)は、比(dr/db)が0.98の結果である。
以上のことから、第1実施形態の混練ロータ1を用いることで、材料に対する温度上昇及び材料内での局部的な温度のバラツキを確実に抑制することができると判断される。
次に、第2実施形態の混練ロータ1及びこの混練ロータ1が設けられた混練機2について説明する。
2 混練機
3 バレル
4 円通孔
5 ホッパ
6 ロータセグメント
7 混練フライト
8 チップ部
9 迎え面
10 凹部
11 凸部
11’ 凸部の頂部
S 基準線
P 基準線
11a 第1の凸部
11b 第2の凸部
Claims (6)
- 水平方向を向く軸心回りに回転自在に配備され、材料を混練する混練フライトを前記軸心回りに少なくとも2本以上備える混練ロータであって、
前記混練フライトは、前記混練ロータの前記軸心と垂直な断面において、前記混練ロータが回転した際に材料に対して向かい合う迎え面を備えており、
前記混練フライトの迎え面には、前記迎え面の一部が径内側に向かって凹んだ凹部が形成されていることを特徴とする混練ロータ。 - 前記混練ロータの軸心と垂直な断面において、互いに周方向に隣り合う混練フライト同士の間には、前記混練フライトの表面の一部が径外側に向かって突出した凸部が形成されており、
前記混練フライトのチップ部と前記凸部の頂部との間が前記凹部とされていることを特徴とする請求項1に記載の混練ロータ。 - 前記凸部の外周面は、前記混練ロータの軸心を中心線とする円筒面状に形成されていることを特徴とする請求項2に記載の混練ロータ。
- 前記混練ロータの軸心から前記凸部の頂部までの径が、前記混練ロータの軸心から前記混練フライトのチップ部までの径の0.6倍以上となるように、前記凸部が形成されていることを特徴とする請求項2に記載の混練ロータ。
- 前記混練ロータの軸心から前記凸部の頂部までの径が、前記混練ロータの軸心から前記混練フライトのチップ部までの径の0.6倍以上となるように、前記凸部が形成されていることを特徴とする請求項3に記載の混練ロータ。
- 請求項1~5のいずれか1項に記載の混練ロータと、前記混練ロータを挿通可能な円通孔を貫通状に有するバレルと、を備えていることを特徴とする混練機。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/418,311 US20150182926A1 (en) | 2012-08-21 | 2013-08-16 | Kneading rotor and kneading machine |
EP13831152.7A EP2889081A4 (en) | 2012-08-21 | 2013-08-16 | KNETROTOR AND KNETMASCHINE |
KR1020157003522A KR101704311B1 (ko) | 2012-08-21 | 2013-08-16 | 혼련 로터 및 혼련기 |
CN201380040614.6A CN104507558B (zh) | 2012-08-21 | 2013-08-16 | 混炼转子以及混炼机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012182676A JP5822800B2 (ja) | 2012-08-21 | 2012-08-21 | 混練ロータ及び混練機 |
JP2012-182676 | 2012-08-21 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014030598A1 true WO2014030598A1 (ja) | 2014-02-27 |
Family
ID=50149907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2013/072017 WO2014030598A1 (ja) | 2012-08-21 | 2013-08-16 | 混練ロータ及び混練機 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20150182926A1 (ja) |
EP (1) | EP2889081A4 (ja) |
JP (1) | JP5822800B2 (ja) |
KR (1) | KR101704311B1 (ja) |
CN (1) | CN104507558B (ja) |
WO (1) | WO2014030598A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170062797A1 (en) * | 2015-08-28 | 2017-03-02 | Toyota Jidosha Kabushiki Kaisha | Kneader and manufacturing method of electrode body including electrode active material using the same |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6430902B2 (ja) * | 2015-07-06 | 2018-11-28 | 日本スピンドル製造株式会社 | 密閉式混練機 |
CN106393471A (zh) * | 2016-11-16 | 2017-02-15 | 哈尔滨理工大学 | 新型混炼式转矩流变仪转子 |
JP7002343B2 (ja) * | 2017-01-26 | 2022-01-20 | 株式会社神戸製鋼所 | ゴム混練機の排出口を開閉するドア |
EP3845302A4 (en) * | 2018-08-30 | 2022-10-26 | Kyocera Corporation | ROTARY ELEMENT, ELEMENT FOR A KNEADER, KNEADER SO, BEARING AND STORAGE UNIT SO |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59147629A (ja) * | 1983-02-12 | 1984-08-24 | Masao Moriyama | 連続混練装置 |
JPH0572806A (ja) * | 1991-09-13 | 1993-03-26 | Dainippon Ink & Chem Inc | 静電荷像現像用トナーの製造方法 |
JPH0641135B2 (ja) | 1989-04-04 | 1994-06-01 | 株式会社神戸製鋼所 | 連続混練機の混練制御装置 |
JPH10244531A (ja) * | 1997-03-06 | 1998-09-14 | Kobe Steel Ltd | 連続混練機とその材料排出方法及び連続混練機のロータ |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3184790A (en) * | 1962-09-15 | 1965-05-25 | Toyo Tire & Rubber Co | Screw for the cold feed extruder of the compounded rubber |
US3403894A (en) * | 1967-08-03 | 1968-10-01 | Stewart Bolling & Co Inc | Rotor and mixer |
SE426561B (sv) * | 1975-05-29 | 1983-01-31 | Usm Corp | Genommatande blandare |
KR910005193B1 (ko) * | 1982-12-30 | 1991-07-23 | 모리야마 마사오 | 혼련장치 (混練裝置) |
US4474475A (en) * | 1982-12-30 | 1984-10-02 | Masao Moriyama | Mixing apparatus |
JPS59123520A (ja) * | 1982-12-30 | 1984-07-17 | Masao Moriyama | 連続混練装置 |
US4556324A (en) * | 1984-05-01 | 1985-12-03 | E. I. Du Pont De Nemours And Company | Apparatus for forming films of constant thickness |
DE3519349A1 (de) * | 1985-05-30 | 1986-12-04 | IKA-Maschinenbau Janke & Kunkel GmbH & Co KG, 7812 Bad Krozingen | Knetmaschine |
JPH0677680B2 (ja) * | 1991-08-16 | 1994-10-05 | ビーエイチ工業有限会社 | 連続捏和機 |
JPH0641135A (ja) | 1992-07-21 | 1994-02-15 | Nippon Soda Co Ltd | イミダゾプテリジン誘導体及びその製造方法 |
JP2905418B2 (ja) * | 1994-04-18 | 1999-06-14 | 株式会社神戸製鋼所 | 混練機 |
KR100199639B1 (ko) * | 1995-04-24 | 1999-06-15 | 토요다 히로시 | 밀폐형혼련장치 |
JP2601645B2 (ja) * | 1995-06-06 | 1997-04-16 | 株式会社神戸製鋼所 | 連続混練機の混練制御装置 |
DE19617606A1 (de) * | 1996-05-02 | 1997-11-06 | Wacker Chemie Gmbh | Kontinuierliches Verfahren zur Herstellung lagerstabiler Organopolysiloxanzusammensetzungen |
JP3499414B2 (ja) * | 1996-12-24 | 2004-02-23 | 株式会社神戸製鋼所 | 2軸混練機 |
US6136246A (en) * | 1997-11-07 | 2000-10-24 | Rauwendaal Extrusion Engineering | Screw extruder with improved dispersive mixing elements |
JP3574618B2 (ja) * | 2000-10-17 | 2004-10-06 | Nok株式会社 | 密閉式混練機 |
JP4236963B2 (ja) * | 2003-03-12 | 2009-03-11 | 株式会社神戸製鋼所 | 密閉式混練機 |
JP3854298B1 (ja) * | 2005-07-11 | 2006-12-06 | 株式会社神戸製鋼所 | 噛合型2軸押出機の混練度調整装置 |
JP4568785B2 (ja) * | 2009-01-19 | 2010-10-27 | 株式会社神戸製鋼所 | 混練ロータ |
JP5832172B2 (ja) * | 2010-08-05 | 2015-12-16 | 株式会社神戸製鋼所 | 連続混練装置 |
-
2012
- 2012-08-21 JP JP2012182676A patent/JP5822800B2/ja active Active
-
2013
- 2013-08-16 CN CN201380040614.6A patent/CN104507558B/zh active Active
- 2013-08-16 EP EP13831152.7A patent/EP2889081A4/en not_active Withdrawn
- 2013-08-16 WO PCT/JP2013/072017 patent/WO2014030598A1/ja active Application Filing
- 2013-08-16 KR KR1020157003522A patent/KR101704311B1/ko active IP Right Grant
- 2013-08-16 US US14/418,311 patent/US20150182926A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59147629A (ja) * | 1983-02-12 | 1984-08-24 | Masao Moriyama | 連続混練装置 |
JPH0641135B2 (ja) | 1989-04-04 | 1994-06-01 | 株式会社神戸製鋼所 | 連続混練機の混練制御装置 |
JPH0572806A (ja) * | 1991-09-13 | 1993-03-26 | Dainippon Ink & Chem Inc | 静電荷像現像用トナーの製造方法 |
JPH10244531A (ja) * | 1997-03-06 | 1998-09-14 | Kobe Steel Ltd | 連続混練機とその材料排出方法及び連続混練機のロータ |
Non-Patent Citations (1)
Title |
---|
See also references of EP2889081A4 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20170062797A1 (en) * | 2015-08-28 | 2017-03-02 | Toyota Jidosha Kabushiki Kaisha | Kneader and manufacturing method of electrode body including electrode active material using the same |
US10497926B2 (en) * | 2015-08-28 | 2019-12-03 | Toyota Jidosha Kabushiki Kaisha | Kneader and manufacturing method of electrode body including electrode active material using the same |
Also Published As
Publication number | Publication date |
---|---|
EP2889081A1 (en) | 2015-07-01 |
US20150182926A1 (en) | 2015-07-02 |
EP2889081A4 (en) | 2016-04-13 |
KR101704311B1 (ko) | 2017-02-07 |
KR20150036509A (ko) | 2015-04-07 |
JP2014039899A (ja) | 2014-03-06 |
CN104507558A (zh) | 2015-04-08 |
CN104507558B (zh) | 2017-03-08 |
JP5822800B2 (ja) | 2015-11-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014030598A1 (ja) | 混練ロータ及び混練機 | |
JP5832172B2 (ja) | 連続混練装置 | |
JP5631296B2 (ja) | 混練用セグメント | |
US8087815B2 (en) | Kneader | |
JP4555351B2 (ja) | 混練度調整装置、押出機、及び連続混練機 | |
US8403554B2 (en) | Screw for extruder, bearing segment used in the same and twin screw extruder provided with screw for extruder | |
JP4369366B2 (ja) | 押出機 | |
EP2484505B1 (en) | Kneading segment and kneading equipment | |
KR100640695B1 (ko) | 배치 믹서 그리고 배치 믹서용 혼합 로터 | |
CN109476043B (zh) | 捏合盘、螺杆元件和挤出机 | |
JP6132172B2 (ja) | 二軸押出混練装置、およびそれを用いた電極合剤の製造方法 | |
CN105612041A (zh) | 用于多轴螺杆式机器的螺杆元件 | |
JP5679874B2 (ja) | 2軸押出機 | |
KR20000047752A (ko) | 자체의 플랜지들 중 적어도 하나의 확대에 따라 가변하는혼합물내로의 진입각을 가진 탄성중합체 등을 혼합하는기계용 로터 | |
JP2016028799A (ja) | 混練撹拌装置 | |
JP5631263B2 (ja) | 連続混練機 | |
JP6242232B2 (ja) | 連続混練装置 | |
CN114450140A (zh) | 在脱气口区域中包括具有特别高螺距的螺杆元件的挤出机及其用途 | |
CN107405790B (zh) | 多轴搓揉机 | |
JP2000167372A (ja) | 混練機 | |
JP3185597U (ja) | 成形機用スクリュ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 13831152 Country of ref document: EP Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2013831152 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 14418311 Country of ref document: US |
|
ENP | Entry into the national phase |
Ref document number: 20157003522 Country of ref document: KR Kind code of ref document: A |
|
NENP | Non-entry into the national phase |
Ref country code: DE |