JP2020029096A - mixer - Google Patents

Abstract

To provide a mixer that uniformly and smoothly stirs, mixes, kneads and tempers a plurality of kinds of viscous materials.SOLUTION: There is provided a mixer, in which viscous materials are split and joined along right-handed rotatory- and left-handed rotatory- wing part 5 and concave groove 7 to uniformly mix and temper. Three pieces of right-handed rotatory wing parts 5, ..., are projected in a right-handed rotatory wing part area 4 on a surface of a rod-like part 2. Three pieces of left-handed rotatory wing parts 9, ..., are projected in a left-handed rotatory wing part area 8 having the reverse rotatory direction, and the right-handed rotatory wing part area 4 and the left-handed rotatory wing part area 8 are alternately formed into five pieces which are along the longitudinal direction of the rod-like part 2. Consequently, viscous materials being pushed out are split and joined through right-handed rotation and left-handed rotation to uniformly and smoothly stir, mix, knead and temper. A peripheral gap area 6 where nothing is formed is formed between the right-handed rotatory wing part area 4 and left-handed rotatory wing part area 8, and the viscous materials being moved and fed are smoothly joined and split to more securely and uniformly stir, mix, knead and temper.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a mixer, and more particularly to a mixer for mixing a plurality of types of viscous materials, for example, a mixer for mixing resin materials having different colors, resin materials having different light transmission properties, resin materials having different chemical compositions (including a static mixer). ).

  Conventionally, as such a mixer, a long spiral ridge is formed along the peripheral surface of a rod in a cylinder, and the material in the cylinder is agitated and mixed by the spiral ridge.

Japanese Patent No. 6085398 JP-A-8-206480 JP-A-8-103643 JP 2005-238232 A JP 2009-106817 A JP 2010-247348 A JP 2010-264348 A

  Since such a spiral ridge is long, it can only be stirred in one direction, either the right spiral or the left spiral, and cannot be uniformly and smoothly stirred, mixed, kneaded, or kneaded. In some cases, the right spiral and the left spiral are alternately present, but the spiral ridge was long and could not be uniformly and smoothly stirred, mixed, kneaded, and kneaded.

  In order to achieve the above object, in the present invention, the rod-shaped portion is provided so as to protrude therefrom, extends helically with respect to the longitudinal direction of the rod-shaped portion, and extends along the peripheral surface of the rod-shaped portion along the right spiral direction. A plurality of right spiral wings having no gap between the inner surface and the upper surface of the cylinder, or protruding from the peripheral surface of the rod-shaped portion, extending spirally in the longitudinal direction of the rod-shaped portion, A plurality of left spiral wings extending along the peripheral surface of the rod-shaped portion in the left spiral direction and having substantially no gap between the inner surface and the upper surface of the cylinder; and a right spiral wing or left spiral for the rotation of the rod-shaped portion. The occupied angle of the wing portion is 90 degrees to 360 degrees, and the height of the right spiral wing portion and the left spiral wing portion from the surface of the rod portion to the inner surface of the cylinder is 40% to 95% of the entire inner radius of the cylinder. %, And only the plurality of right spiral wings protrude along the circumference of the rod-shaped portion. Rear, or only the plurality of left-handed wings, is a left-handed wings area protruding along the circumference of the rod-shaped part, and between these right-handed wings areas or in the left-handed helical part area There was provided a void area formed around the rod-shaped portion and having no protrusion.

  Further, it is provided on the peripheral surface of the rod-shaped portion, extends spirally with respect to the longitudinal direction of the rod-shaped portion, and extends along the peripheral surface of the rod-shaped portion in the right spiral direction. A plurality of right spiral wings with no gap between them, protruding from the peripheral surface of the rod-shaped portion, extending spirally in the longitudinal direction of the rod-shaped portion, and extending the peripheral surface of the rod-shaped portion in the left spiral direction. A plurality of left spiral wings along which there is substantially no gap between the inner surface and the upper surface of the cylinder, and the right spiral wing or the left spiral wing are substantially the same in shape and substantially symmetric with each other. The occupied angle of the right spiral wing portion and the left spiral wing portion with respect to the rotation of the rod portion is 90 degrees to 360 degrees, and the right spiral wing portion and the left spiral wing portion extend from the surface of the rod portion to the inner surface of the cylinder. The height of the rod is 40% to 95% of the entire inner radius of the cylinder, and only the plurality of right spiral wings are rotated around the rod. The right spiral wing area protruding along the left spiral wing area, and only the plurality of left spiral wings are the left spiral wing area protruding along the circumference of the rod-shaped part. Between the wing area or the left spiral area, there was provided a void area formed over the circumference of the rod-shaped part and not provided with any projection.

  Further, the number of the right spiral wings in the one right spiral wing area is three or more, and the three or more right spiral wings are formed in the same shape and the same size in the rod-shaped portion at an equal angle to each other. The number of left spiral wings in the one left spiral wing area is three or more, and the three or more left spiral wings are the same shape and the same size, and are provided on the rod-shaped portion at an equal angle to each other. Have been.

  Accordingly, the occupied angle of the right spiral wing and the left spiral wing is as short as 45 to 360 degrees, so that uniform, smooth stirring, mixing, kneading, and kneading can be performed. In addition, since there is a gap area between the right spiral wing area and the left spiral wing area, the fed viscous material is merged or diverted, so that uniform, smooth stirring, mixing, kneading, Can be trained.

  In addition, if the number of right spiral wings is three and the number of left spiral wings is three or more, three or more types of viscous materials having different properties are merged or separated, and are uniform and smooth. Can be stirred, mixed, kneaded and kneaded.

  In this case, two kinds of viscous materials to be mixed may be used. At this time, two or more right spiral wings or left spiral wings among the materials put in between three or more right spiral wings or left spiral wings are used. The same material is put in between. In this case, the number of right spiral wings or left spiral wings may be an even number, such as 4, 6, 8,... The three or more types of viscous materials having different properties have different colors, different viscosities, fluidity, and particle sizes.

(1) Mixer FIG. 1 shows a mixer. From an extruder (injection machine) 33, a viscous material, for example, a granular or powdery resin material is melted and pressed to be extruded, and is pressed and sent into the mixing cylinder 1 (cylinder), and It is held and kept in a molten state by a heater (not shown), stirred and mixed by the right spiral wings 5 and the left spiral wings 9 of the rod-shaped portion 2, sent to the mold 32, and molded into a resin product.・ It is produced.

  This mixer is used in an extrusion molding machine or an injection molding machine or the like, and a viscous material, for example, a resin material, which is fed into a cylindrical mixing tube 1 (tube) of the mixer is stirred and mixed. The mixing cylinder 1 is made of metal, and a heater is mounted around the mixing cylinder 1. The resin material in the mixing cylinder 1 is held and kept in a molten state.

  A rod 2 is supported in the mixing cylinder 1 so as to penetrate the center of the mixing cylinder 1 along the central axis of the cylindrical mixing cylinder 1. The rod-shaped portion 2 is linear, long, substantially cylindrical, and has a flat surface along a cylindrical surface and has no or little unevenness and no holes. As a result, the resin material to be stirred and mixed does not stay, and the stirring, mixing, kneading and kneading are performed uniformly and smoothly.

  The rod portion 2 and the mixing cylinder 1 are made of metal, for example, copper, iron, aluminum, zinc, tin, chromium, or an alloy thereof. harden (heat-resistant die steel, for example, equivalent to DH2F, SKD61), age hardening / solubilizing material (SUS630, RHe45).

In FIG. 1, there is a gap between the surface of the rod portion 2 and the inner surface of the mixing cylinder 1, and the upper end surface and the outer end surface of right spiral wing portions 5 and left spiral wing portions 9, which will be described later, It is almost in contact with the inner surface. The right spiral wings 5 and the left spiral wings 9 have the same shape, the same height and the same height, and differ only in the direction of the spiral.

  Therefore, between the right spiral wing part 5 and the left spiral wing part 9, a circumferential gap area 6 “groove” is formed, and these grooves are right-handed and left-handed along the spiral direction, and are extruded. The incoming resin materials are separated and merged, and are uniformly and smoothly stirred, mixed, kneaded, and kneaded.

  Between each of the plurality of right spiral wing areas 4 where the right spiral wings 5 are formed and the plurality of left spiral wing areas 8 where the left spiral wings 9 are formed, The orbiting void areas 6 are formed. The orbiting void area 6 is not spirally wound but orthogonal to the circumference of the rod-shaped portion 2 and has a constant width.

  As a result, the extruded resin material is smoothly split and merged, and uniformly and smoothly stirred, mixed, kneaded, and kneaded. Nothing protrudes from each orifice area 6, and the surface is smooth. As a result, the extruded resin material is smoothly split and merged, and uniformly and smoothly stirred, mixed, kneaded, and kneaded.

  The tip of the rod-shaped portion 2 is sharply projected in a conical shape to form a protrusion 3 from which the molten viscous resin material before melting is fed. This rod-shaped portion 2 is cylindrical, and may have a heater at the center or nothing. The viscosity of the resin material also changes depending on the heating temperature of the heater.

  The rod-shaped portion 2 adjacent to the projecting portion 3 has a columnar shape, and a right spiral wing portion area 4 is formed on the rod-shaped portion 2 adjacent to the projecting portion 3 with the surrounding gap area 6 interposed therebetween. I have. In the right spiral wing area 4, three right spiral wings 5 are provided at equal intervals and at equal angles along the circumference of the rod-shaped portion 2.

  The right spiral wings 5 are plate-shaped and wall-shaped, project from the rod-shaped part 2 so as to be orthogonal to the surface, and extend around the rod-shaped part 2 along the right spiral direction. . There are no cavities below the right spiral wings 5, so that the resin material to be stirred and mixed does not remain, and the stirring, mixing, kneading and kneading are performed uniformly and smoothly. In some cases, there may be a cavity.

  A left spiral wing area 8 is formed next to the right spiral wing area 4 with the orbiting gap area 6 interposed therebetween. In the left spiral wing area 8, three left spiral wings 9 are provided at equal intervals and at the same angle along the circumference of the rod-shaped portion 2.

  The left spiral wings 9 are plate-shaped and wall-shaped, project from the rod-shaped part 2 so as to be orthogonal to the surface, and extend around the rod-shaped part 2 along the left spiral direction. . There are no cavities below the left spiral wings 9, so that the resin material to be stirred and mixed does not stay, and the stirring, mixing, kneading and kneading are performed uniformly and smoothly. In some cases, there may be a cavity.

  Next to the left spiral wing area 8, a right spiral wing area 4 is formed with the orbiting gap area 6 interposed therebetween, and a left spiral wing area 8 is formed with the orbiting gap area 6 interposed therebetween. Further, a right spiral wing area 4 is formed with the orbital gap area 6 interposed therebetween.

  The right spiral wing area 4 and the left spiral wing area 8 are adjacent to each other one by one, and the right spiral wing area 4 and the left spiral wing area 8 of this single tier are alternately arranged in five rows. One-stage × 5 right spiral wing area 4 and one-stage × 5 left spiral wing area 8 are alternately arranged.

  In this manner, the right spiral wing area 4 and the left spiral wing area 8 are arranged alternately in the same number. Thereby, the plurality of types of resin materials fed are pressurized and fed into the rod-shaped portion 2 in the mixing cylinder 1, and are turned rightward or leftward along this feeding / movement. And uniformly and smoothly stirred, mixed, kneaded and kneaded.

  The upper and outer surfaces of the right spiral blade 5 and the left spiral blade 9 are in contact with the inner surface of the mixing cylinder 1 and have no gap. As a result, there is no space between the mixing cylinder 1 and the rod-shaped portion 2 in which there is no right spiral wing portion 5 and left spiral wing portion 9. They are completely split and merged along the left spiral blades 9 and are uniformly and smoothly stirred, mixed, kneaded and kneaded. In some cases, there may be a gap between the outer surface / upper surface of the right spiral blade 5 and the left spiral blade 9 and the inner surface of the mixing cylinder 1.

  The circumferential void areas 6 are formed along / over the circumference of the rod-shaped portion 2 and have nothing protruding. As described above, the right spiral wing area 4 and the left spiral wing area 8 are alternately arranged, and between these, the orbital void areas 6 are formed. The materials are merged or split, so that they are completely uniformly and smoothly stirred, mixed, kneaded and kneaded.

  An end of the rod-shaped portion 2 on the side opposite to the protruding portion 3 is extended outward in a disk shape to form a delivery portion 26. The disc-shaped delivery section 26 is provided with multiple through holes 27, for example, 24 through holes 27 at equal intervals in a ring shape. From the 24 through holes 27, the stirred and mixed resin material is extruded. The number of the through holes 27 is larger than three, that is, right spiral wings 5 and left spiral wings 9 described later.

  Therefore, the number of right spiral wings 5 per stage of the right spiral wing area 4 and the number of left spiral wings 9 per stage of the left spiral wing area 8 are determined by the through holes 27 of the resin material. Will be the same or less than the number. The number of through holes 27 may be the same as the number of types of the resin material to be stirred and mixed, or may be more or less.

  Thus, if the size of the through hole 27 is adjusted, the resin material stays in front of the delivery unit 26, and the resin material is well stirred and mixed. Note that the number of through holes 27 may be the same as the number of the right spiral wings 5 and the left spiral wings 9, or three, six, nine, twelve, twenty-four, twenty-seven. , 30, 2, 3, 1, 5, 5, 23, 25, etc.

  The mixing cylinder 1 is separated into a main body and a cap, and each is screwed together. Between the main body and the cap, the peripheral edge of the delivery section 26 of the rod section 2 is sandwiched and fixed. A small through hole is formed in the center of the cap, from which the mixed resin material is extruded / injected into the mold 32.

(2) Right spiral wing 5 and left spiral wing 9
2, 3, and 4 show the right spiral wing 5, the left spiral wing 9, and the like. In the one right spiral wing area 4, three / three right spiral wings 5 having the same shape and the same size are formed at equal intervals and at equal angles. The left spiral wings 9 having the same shape and the same size are formed in three / three at equal intervals and at equal angles. A groove 7 is formed between each of the right spiral wing 5 and the left spiral wing 9.

  Each of the three right spiral wings 5 and each of the three left spiral wings 9 have the same shape and the same size and are at equal intervals, so that the resin material that has been moved and fed in may merge or diverge. Thus, the mixture is completely uniformly and smoothly stirred, mixed, kneaded, and kneaded.

  This equal angle is maintained at an equal angle regardless of where the spiral right spiral wing 5 and the left spiral wing 9 are taken, and from one end to the other end of the right spiral wing 5 and the left spiral wing 9. Maintained at equal angles. As a result, the resin material is uniformly and smoothly stirred, mixed, kneaded, and kneaded without remaining on the way.

  FIG. 4 shows a state in which the rod 2 is viewed from the lateral direction / axial direction. One of the right spiral wings 5 and the left spiral wings 9 has an occupied angle of 90 to 360 degrees with respect to the 360-degree rotation of the bar 2, and is 135 to 270 degrees, for example, about 180 degrees. I have. The right spiral wing portion 5 and the left spiral wing portion 9 have the same shape, the same size, and are symmetrical with each other, and are different only in the helical direction / turning direction. Has become.

  This angle can be changed according to the viscosity of the resin material to be stirred, mixed, kneaded and kneaded. If the viscosity is high, the angle increases, and the distance of stirring, mixing, kneading, and kneading becomes longer, and the stirring, mixing, kneading, and kneading become longer. If the viscosity is low, the angle becomes small, and the distance of stirring, mixing, kneading and kneading becomes short, and the stirring, mixing, kneading and kneading are shortened.

  As a result, the moved and fed resin materials are merged or diverged, and are stirred, mixed, kneaded, and kneaded completely and smoothly. In addition, the resin material is smoothly stirred, mixed, kneaded, and kneaded without remaining on the way.

  Due to the above-mentioned equidistant equiangular shape, same shape, same size and symmetry, no deviation occurs in the circling direction / helical direction in the right helical direction or the left helical direction, and the resin material is uniformly and smoothly stirred / mixed / kneaded / kneaded. Is done. Also, since the occupied angle of each of the five right spiral wings 5 and left spiral wings 9 is 180 degrees, the orbiting space area of the gap between each of the right spiral wings 5 and left spiral wings 9. The occupation angle of 6 will be substantially absent.

  Each end 18 of the right spiral wing 5 of the right spiral wing area 4 and each end of the left spiral wing 9 of the left spiral wing area 8 adjacent to each other with the orbiting gap area 6 interposed therebetween. 19 are provided at positions at mutually different angles with respect to the rod-shaped portion 2, for example, at positions at angles intermediate to each other.

  Thereby, when the resin material moves from the left spiral wing area 8 to the right spiral wing area 4 or when the resin material moves from the right spiral wing area 4 to the left spiral wing area 8, The resin material is divided into two parts, for example, equally divided into two parts and uniformly divided, so that the resin material is more uniformly stirred, mixed, kneaded and kneaded.

  If the end portions 18 and 19 are provided at intermediate angles, that is, at alternate angles, the resin material is more uniformly stirred, mixed, kneaded, and kneaded. When materials having different viscosities are mixed, they may be provided at positions at angles other than the middle. In some cases, the end portions 18 and 19 may be provided at positions at the same angle to each other. Thereby, the resin material flows more smoothly.

  FIG. 4 shows a cross section of the left spiral wing area 8 and / or the right spiral wing area 4. This section is perpendicular to the bar 2. As shown in this figure, the three left spiral wings 9 and / or the right spiral wing 5 are equally spaced at equal intervals of 120 degrees. As a result, the resin material is smoothly and uniformly stirred, mixed, kneaded, and kneaded without remaining on the way.

  The three concave grooves 7 between each of the three left spiral wings 9 or / and each of the three right spiral wings 5 are smoothly curved and have no steps or irregularities. As a result, the resin material is smoothly and uniformly stirred, mixed, kneaded, and kneaded without remaining on the way.

  The three concave grooves 7 have the same shape, the same size, the same depth, and the same width in both the left spiral wing area 8 and the right spiral wing area 4. In the three grooves 7, the resin material is similarly uniformly or smoothly stirred, mixed, kneaded, and kneaded as the resin material merges and splits.

  The right spiral wing portion 5 and / or the left spiral wing portion 9 have a spiral peripheral edge tip of 0.5 mm to 5 mm, for example, about 1 mm to 2 mm in thickness, and a plate-like step 20. Has become. A portion formed between the orbiting end of the right spiral wing 5 or / and the left spiral wing 9 and the inner surface of the mixing cylinder 1 has a step 20 and is in contact with a predetermined angle.

  As a result, the mixed resin material is scrutinized by the right spiral wing 5 and the left spiral wing 9 without leakage, and is agitated, mixed, kneaded, and kneaded without leakage and more completely and uniformly. It is stirred, mixed, kneaded and kneaded. The right spiral wing 5 and / or the left spiral wing 9 have a spiral tip with a thickness of 0.5 mm to 5 mm, for example, about 1 mm to 2 mm. The strength of the tip of the left spiral wing 9 or / and the right spiral wing 5 is improved.

  Each of the ends 18 and 19 has a thickness, and the right spiral wing 5 and the left spiral wing 9 are helical and inclined obliquely with respect to the longitudinal direction of the rod 2. One of the steps 20, 20 in the portions 18, 19 is sharp at an acute angle and the other is not sharp at an obtuse angle, and both steps 20, 20 are in contact with the inner surface of the mixing cylinder 1. Thus, the resin material can be smoothly and diverted by the pointed step 20 without waste, and the non-pointed step 20 does not hinder the flow of the resin material without waste.

  The thickness of the tip of the side edge of the spiral of the right spiral wing 5 and the left spiral wing 9 is equal to the entire inner radius of the mixing cylinder 1, that is, from the center of the rod 2 to the right spiral wing 5 or / and the left spiral. The length to the tip of the wings 9, that is, 10% to 100 mm, is 1% to 25%, for example, 5% to 15%.

  The height of the right spiral wing 5 and the left spiral wing 9, that is, the height from the surface of the rod portion 2 of the right spiral wing 5 and the left spiral wing 9 to the inner surface of the mixing cylinder 1 is 20% to 100%, or 40% to 95% of the entire inner radius of the mixing cylinder 1, that is, the length from the center of the rod-shaped portion 2 to the tip of the right spiral wing 5 and the left spiral wing 9. Alternatively, it is about 60% to 90%, for example, about 70% to 80%.

  Thereby, the volume of the concave grooves 7 also increases, and the resin material is well stirred, mixed, kneaded, and kneaded. Therefore, the rod-shaped portion 2 is omitted, the heights of the right spiral wing portions 5 and the left spiral wing portions 9 are brought close to the above-mentioned 100%, and the volume of the space for stirring, mixing, kneading and kneading the resin material is reduced. It is desirable to make it larger.

  However, since the strength of the mixer itself is reduced, the rod-shaped portion 2 having a certain thickness is preferable, though it depends on the viscosity (temperature) of the material to be stirred, mixed, kneaded, and kneaded. Without the rod-shaped portion 2, the right spiral wing area 4 and the left spiral wing area 8 would be directly attached.

  The bottoms of the grooves 7 coincide with the surface of the rod-shaped portion 2. However, it may be higher or lower than the surface of the rod portion 2. Between each of the plurality of right spiral wing area 4 and each of the plurality of left spiral wing area 8, the circumferential gap area 6 is provided as described above, and the circumferential gap area 6 extends along the circumference of the rod 2. There is nothing protruding.

  As a result, the spiral direction is switched between the right spiral blade area 4 and the left spiral blade area 8, and when the flow direction of the resin material is switched, the spiral direction is gradually switched in the empty orbiting void area 6, and the spiral is sharp. The direction is not switched, and the circumferential direction / helical direction is switched smoothly, so that the resin material is uniformly and smoothly stirred, mixed, kneaded, and kneaded.

  The face of each end 18, 19 of the right spiral wing 5 and the left spiral wing 9 facing the circling gap area 6 between the right spiral wing area 4 and the left spiral wing area 8 , Are arranged along the circumferential direction of the rod-shaped portion 2. Therefore, the ends 18 at both ends of the right spiral wings 5 are sharp, and the ends 19 at both ends of the left spiral wings 9 are also sharp.

  As a result, in the circumferential gap area 6 where the direction of the spiral is switched, the resin material that hits the sharp tip of the right spiral wing 5 or the left spiral wing 9 is the resin material that has been moved and sent in FIG. As described above, they are uniformly and smoothly stirred, mixed, kneaded, and kneaded.

  The right and left spiral wings 5 and 9 on both sides of the orbiting void area 6 have no irregularities at the ends 18 and 19, and the orbiting void areas 6 have no irregularities along the orbital direction. ,Have all. This makes it easier for the resin material in the circumferential void areas 6 to move and flow in the circumferential direction of the rod-shaped portion 2 and to smoothly switch between the left and right spiral directions, so that the resin material is uniformly and smoothly stirred, mixed, kneaded, and so on. It is trained.

  The inclination angle of the spiral of the right spiral wing 5 and the left spiral wing 9, that is, the inclination angle, that is, the inclination angle of the spiral direction with respect to the longitudinal direction of the rod-shaped portion 2, is 80 degrees to 30 degrees, for example, 70 degrees. To 50 degrees. In other words, the inclination angle of the spiral direction with respect to the circumferential direction of the rod-shaped portion 2 is 10 degrees to 60 degrees, for example, 20 degrees to 40 degrees.

  Thereby, the lengths of the right spiral wing 5 and the left spiral wing 9 along the longitudinal direction of the rod 2 and the right spiral wing 5 and the left spiral along the circumferential direction of the rod 2 are arranged. The width of the wings 9 is substantially the same, or the width is longer than the length. Of course, the width may be shorter than or substantially equal to the length.

  When the inclinations of the right spiral wings 5 and the left spiral wings 9 approach the circumferential direction of the rod 2, the stirring, mixing, kneading, and kneading of the resin material are further advanced. When the inclination of the right spiral wings 5 and the left spiral wings 9 approaches the longitudinal direction of the rod-shaped portion 2, the resin material to be stirred, mixed, kneaded, and kneaded becomes faster. If the angle is 60 degrees to 45 degrees, the former is the case.

  In order to produce / manufacture such a mixer, a metal round bar is prepared, and the radius of the round bar is substantially equal to the entire inner radius of the mixing cylinder 1. The groove 7, the right spiral wing 5, the left spiral wing 9, and the orbital space area 6 are processed to produce the left spiral wing area 8 and the right spiral wing area 4. .

(3) Resin material (viscous material)
The mixer of the present invention is incorporated in a resin molding product production apparatus / equipment and the like, and is used for the purpose of complementing the kneading function of a screw such as an extruder or an injection machine and enhancing the mixing function. The resin molded product is small and light, but may be medium-sized and medium-weight or large-sized and heavy.

  In addition, the resin material to be stirred and mixed by the present mixer may be a material having a different color, and a resin material having a mixed color is produced. The mixer may be any of an extruder, an injection machine, a static mixer and a static mixer, and the rod-shaped portion 2 may be a mixing nozzle or an injection nozzle.

  Resin materials to be agitated and mixed include plastic materials, colorants, additives, etc. Master badges, color master badges, UV cut materials, antistatic materials, which are pigments for coloring resin products, There are stone powder, filler materials, solubilizers, compatibilizers, compatibilizers, etc., which are stirred and mixed. The resin material / master badge is in the form of pellets, but may be in powder form, and the shape of the grains may be cylindrical, prismatic, spherical, elliptical, cubic, rectangular, polyhedral, etc. Although they have the same weight, ones having different sizes or different weights may be mixed.

  The color of such a colored resin product is not only a single color but also a pattern composed of a plurality of colors such as a wood grain pattern and a marble pattern. In such a pattern, the melting point / melting temperature of each color master badge / resin material to be mixed is different.

  The weight of one resin material / master badge is about 0.001 g to 1 g, 0.005 g to 0.5 g, and 0.01 g to 0.1 g, but may be other heavy weight. The delivery amount / delivery speed is 1 grain / 10 minutes to 100 grains / minute, 1 grain / 2 minutes to 50 grains / minute, 1 grain to 25 grains / minute, 2 grains to 10 grains / minute, 2.5 grains to It is 7.5 grains / min.

  Resin materials and master badges are made of high polymer resin such as polyethylene, polypropylene, polystyrene, polycarbonate, polychlorotrifluoroethylene, polyurethane, polyacrylamide, polymethyl acrylate, polyacrylonitrile, polyvinyl chloride, acrylic resin, and pet resin. A resin / soft resin, a thermoplastic resin / thermosetting resin, a synthetic resin or a natural resin may be used, or a mixture of these may be stirred and mixed, or a mixture of these may be stirred and mixed.

(4) Other Embodiments The present invention is not limited to the above embodiments, and can be variously modified. For example, the number of the right spiral wings 5 or / and the number of the left spiral wings 9 may be one, two, four, five,. In this case, the right spiral wings 5 and the left spiral wings 9 have the same shape and the same size, 120 degrees, 90 degrees, 72 degrees, 51.42 degrees, 60 degrees, and 45 degrees. .., 180 degrees, 360 degrees,... Are equal angles and intervals, but may be unequal angles or unequal intervals.

  Such a change and the following changes may be changed only in one of the right spiral wing 5 and the left spiral wing 9, and the right spiral wing 5 and the left spiral wing 9 are symmetrical. And the shape of the spiral may not be the same, and the angle of inclination of the spiral is arbitrary, and may be any angle. The right spiral wing 5 and the left spiral wing 9 have The inclination angles may be different or the same.

  As the number of right spiral wings 5 and left spiral wings 9 increases, the types of materials that can be mixed increase. However, the space amount of the concave grooves 7 is reduced, and the amount of the mixable material is reduced. To prevent this, a material obtained by mixing three types of materials with a mixer may be further passed through a mixer to mix another two types of materials. Such multi-stage mixing may be further increased to two stages, three stages, four stages, and so on.

  Each of the right spiral wings 5 or / and / or the left spiral wings 9 and the concave grooves 7 have different shapes and sizes, and their angles are not equal angles and intervals, but are unequal angles and unequal. The intervals may be different, each may be different, or there may be irregularities, and the right spiral wing 5 and the left spiral wing 9 are not symmetric but each asymmetric and different. Is also good. The width, depth, and inclination angle of each orbiting void area 6 are not the same, and may be different from each other.

  Examples of the viscous material include the above-mentioned granular solid resin material, which is gradually melted by heating, as well as chemicals, drugs, foods, seasonings, foodstuffs, printing inks, printing materials, additives, and coloring agents. , A filler, a foaming agent, a gel-like material, or a sol-like material. The rod-shaped portion 2 may be a biaxial two-body unit, a uniaxial one unit, or a multi-axial unit of three or more units.

  The surface of the rod portion 2 has no irregularities, but may have irregularities, holes, or a net shape. Although the mixing cylinder 1 and the rod-shaped portion 2 are cylindrical or cylindrical, the cross section may be polygonal such as elliptical, hexagonal, octagonal, and decagonal. The rod-like portion 2 has a columnar shape, but may have different thicknesses at both ends and may have a slightly tapered shape.

  The right spiral wing area 4 and the left spiral wing area 8 were alternately formed one by one, but were arranged in two, three, four, five,... May be done. The right spiral wing area 4 and the left spiral wing area 8 are arranged in five rows one by one, but are arranged in one row, two rows, three rows, four rows, six rows,. May be done.

  The number of right spiral wing area 4 and the number of left spiral wing area 8 may be different, the mixer may be provided with only right spiral wing area 4, or may be provided with only left spiral wing area 8. You may. In this manner, even if the right and left are not symmetric but asymmetric and uneven, the stirring, mixing, kneading and kneading are performed uniformly and smoothly.

  The cross-sectional shape of the right spiral wing portion 5 and the left spiral wing portion 9 was substantially plate-shaped, but was rectangular, trapezoidal, triangular, semi-circular, semi-elliptical, parallelogram, semi-rhombic, semi-circular. Polygon, semi-star, semi-curve, L-shaped, H-shaped, I-shaped, U-shaped, T-shaped, C-shaped, O-shaped, N-shaped, M-shaped, X-shaped, J-shaped, Y-shaped, E-shaped, An F-shape, an S-shape, a V-shape, an angular shape, a shape with an angular step, a shape with a rounded step, a shape with a rounded unevenness, and the like may be used.

  The thickness of the left spiral wing 9 or the left spiral wing 9 is thicker, and the width of the right spiral wing 5 between the gaps and grooves between the left spiral wings 9 and the width of the gap between the left spiral wings 9 is between the two. It may be thicker than the width of the gap / groove. The upper surface and outer surface of the right spiral blade portion 5 or the left spiral blade portion 9 are along the cylindrical surface. However, the inner surface of the mixing cylinder 1 may have irregularities. Although it was along the surface design, it may have irregularities.

  One of the right helical wings 5 and the left helical wings 9 has an occupied angle of 180 degrees with respect to the 360-degree rotation of the rod-shaped portion 2, and 45 degrees, 60 degrees, 75 degrees, 80 degrees, 90 degrees, and 135 degrees. Degrees, 270 degrees, 360 degrees,... The number of right spiral wings 5 and left spiral wings 9 per revolution may be two, four, five, six, seven, eight,... Other than three. The right helical wings 5 and the left helical wings 9 do not have to have the same shape and the same size, and they do not have to be symmetrical to each other.

  The adjacent right spiral wing area 4 and the right spiral wing 5 of the right spiral wing area 4 may be substantially along the same spiral line, or may not be substantially along the same spiral line. Is also good. As a result, different splitting and joining of viscous materials can be realized, and uniform, smooth stirring, mixing, kneading, and kneading are performed.

  The extending direction along the spiral of the right spiral wings 5 does not have to hit the tip of the left spiral wing 9 in the adjacent left spiral wing area 8. Further, the extension direction along the spiral of the left spiral wings 9 does not have to hit the tip of the right spiral wing 5 in the adjacent right spiral wing area 4. This makes it easier for the resin material that has flowed in and to be split in different states, and is uniformly and smoothly stirred, mixed, kneaded, and kneaded.

  In the orbiting space area 6, the ends 18 and 19 of the right spiral wing 5 and the left spiral wing 9 have irregularities, and the orbiting void area 6 has many irregularities along the circling direction and may not be aligned. . The ends 18, 19 ... of the right helical wing 5 and the left helical wing 9 may not be sharp and may be rounded and smooth. The orbital gap area 6 is omitted, and the end portions 18 and the end portions 19 of the right spiral wing portion 5 and the left spiral wing portion 9 are close to each other, and the orbital void area 6 may not be provided.

  The longitudinal direction or the circumferential direction of the circumferential void area 6 may be shifted or coincide with the circumferential direction or the longitudinal direction of the rod-shaped portion 2, and the shift may be 18, 36, 54,. Such as many times. The rod-shaped portion 2 may be configured such that the inside of the mixing cylinder 1 is rotated clockwise or counterclockwise, or alternatively, clockwise and counterclockwise. Even in this case, a plurality of types of resin materials are separated and merged, and uniformly and smoothly stirred, mixed, kneaded, and kneaded. Here, a hopper may be provided on the mixing cylinder 1, and the resin material may be supplied into the mixing cylinder 1 from the hopper.

  There is no gap between the outer surface of the right spiral wing 5 or the end 18 or the end 19 of the left spiral wing 9 and the inner surface of the mixing cylinder 1, but part or all of the end 18 or the end 19. There may be gaps. Even in this case, a plurality of types of resin materials can be separated and joined, and uniform and smooth stirring, mixing, kneading, and kneading can be performed.

  The right spiral wings 5 or the left spiral wings 9 have the same shape and the same number, but some or all of them have different shapes, sizes, lengths, thicknesses, heights, heights, thicknesses, and inclinations. , Curves, numbers and arrangements, or the surface of the right spiral wing 5 or the left spiral wing 9 may have irregularities.

  At the outer tip of the right spiral wing 5 or the left spiral wing 9, two steps 20 are provided. However, three or more steps 20 may be provided, or they may be united into one and sharpened like a mountain. May be. The circular gap area 6 may be omitted, and may be formed without a gap between the right spiral wing area 4 and the left spiral wing area 8.

  The step 20 may be omitted, and may smoothly curve from the inner surface of the mixing cylinder 1 to reach the right spiral blade 5 or the left spiral blade 9. Although one of the pair of steps 20, 20 was sharp and sharp, and the other was obtuse and not sharp, both may be the same angle, both may be 90 degrees, both may be acute, or both may be obtuse.

  Holes and slits may be formed in the side surface of the mixing cylinder 1. Only one of the right spiral wing area 4 and the left spiral wing area 8 may be omitted, and only the right spiral wing area 4 and only the left spiral wing area 8 may be provided.

  The thickness of the right spiral wing 5 or the left spiral wing 9 may be 5 mm or more, or 0.5 mm or less. The length from the center of the rod 2 to the tip of the right spiral wing 5 or the left spiral wing 9 may be 1% or less, or 25% or more.

  The above-mentioned mixer, mixing cylinder 1, rod-shaped part 2, projecting part 3, right spiral wing part area 4, right spiral wing part 5, circular gap area 6, concave groove 7, left spiral wing part area 8, left spiral The wing 9, the end 18, the end 19, the step 20, the delivery portion 26, the through hole 27, the mold 32, and the extruder 33 are one, one, one, one, a plurality of even single layers. A plurality of layers or three or more, three or more layers, a single layer or a plurality of three or more layers, a part or the whole of each of these configurations, operations, actions, steps or functions may be omitted, It may be divided and separated to increase or decrease its number, its shape may be arbitrarily changed, it may be replaced by another equivalent, or two or more of these are united or They may be integrated and used in common, and the orientation may be 90 degrees, 0 degrees to 18 Degree, up / down, left / right, front / back, front / back, front, back / inclination / changed / reversed may be used, and the relative magnitude of each dimension may be switched or the same, and some may be used. Or all may be omitted, the shape may be flat, curved, may have irregularities, square, rectangular, square, triangular, circular, elliptical, polygonal, trapezoidal, Semi-ellipse, parallelogram, rhombus, polygon, triangle, trapezoid, ring, semi-ring, star, sector, curve, cross, L-shaped, H-shaped, I-shaped, U-shaped, T-shaped, C-shaped , O-shape, N-shape, M-shape, X-shape, J-shape, Y-shape, E-shape, F-shape, S-shape, V-shape, curved surface, angular shape, rectangular shape, polyhedral shape, cylinder, elliptical cylinder, prism, Semicircular cylinder, semielliptical cylinder, half prism, truncated cone, truncated pyramid, sphere, oval, hemisphere, semi-oval, polyhedron, hyoh A round shape, a saw-tooth shape, other three-dimensional shapes, a combination of these shapes may be used. Shape, net shape, frame shape, sheet shape, mesh shape, blind shape, slit shape, those with many holes, those with holes in the center, etc., a combination of these, etc. It may be omitted, and the material is made of metal, wood, bamboo, resin, metal, glass, cotton, cloth, thread, fiber, rubber, paper, ceramic, carbon, etc. Or a composite or a multi-layer laminate, transparent or translucent, and fixing between them is welding, bolt and nut, screw, hook-and-loop fastener, adhesive, adhesive tape, hook and Hot And anything like a magnet.

(5) Effects of Other Inventions [1] A linear, elongated, substantially columnar rod-like portion supported in a cylinder, and protruding from the peripheral surface of the rod-like portion, in the longitudinal direction of the rod-like portion. A plurality of right spiral wings extending spirally with respect to the circumference of the rod along the right spiral direction and having no gap between the inner surface and the upper surface of the cylinder, or Protruding from the peripheral surface, spirally extending with respect to the longitudinal direction of the rod portion, extending along the left spiral direction on the peripheral surface of the rod portion, there is substantially a gap between the inner surface and the upper surface of the cylinder. The occupied angle of the right helical wing or the left helical wing to the plurality of left helical wings and the rotation of the rod-shaped part is 90 degrees to 360 degrees, and the right helical wing and the left helical wing have the above-mentioned rod shape. The height from the part surface to the inner surface of the cylinder is 40% to 95% of the entire inner radius of the cylinder, and only the plurality of right spiral wings are The right spiral wing area protruding along the circumference of the stick-shaped part, or only the plurality of left spiral wings is the left spiral wing area protruded along the circumference of the rod-shaped part. Between the right spiral wing portion area or the left spiral portion area, a void area formed over the circumference of the rod-shaped portion and not projecting at all, comprising: A mixer characterized in that a plurality of types of viscous materials sent are mixed.

[2] A linear, elongated, substantially columnar rod-like portion supported in a cylinder, and protruding from the peripheral surface of the rod-like portion and extending spirally with respect to the longitudinal direction of the rod-like portion. A plurality of right spiral wings extending along the peripheral surface of the rod-shaped portion in the right spiral direction and having no gap between the inner surface and the upper surface of the cylinder; and projecting from the peripheral surface of the rod-shaped portion. A plurality of left spiral wings extending spirally with respect to the longitudinal direction of the portion, extending along the peripheral surface of the rod-shaped portion in the left spiral direction, and having substantially no gap between the inner surface and the upper surface of the cylinder; The right spiral wing or the left spiral wing has substantially the same shape and the same size and is substantially symmetric to each other. The occupied angle of the right spiral wing and the left spiral wing with respect to the rotation of the rod-shaped portion is 90 to 360 degrees. And the height of the right spiral wing portion and the left spiral wing portion from the surface of the rod portion to the inner surface of the cylinder is 40% of the entire inner radius of the cylinder. 95%, and only the plurality of right spiral wings are the right spiral wing area protruding along the circumference of the rod-shaped part, and only the plurality of left spiral wings are the same as the rod-shaped part. A left helical wing area protruding along the circumference, and between the right helical wing area or the left helical area, there is no protrusion formed over the circumference of the rod portion. A void area not provided, wherein a plurality of types of viscous materials fed into the cylinder are mixed.

[3] The number of right spiral wings in the one right spiral wing area is three or more, and the three or more right spiral wings have the same shape and the same size, and are formed on the rod-shaped portion at an equal angle to each other. The number of the left spiral wings in the one left spiral wing area is three or more, and the three or more left spiral wings have the same shape and the same size, and are formed at the same angle with each other on the rod-shaped portion. 3. The mixer according to claim 2, wherein the mixer is provided. Thereby, three or more types of materials can be simultaneously stirred, mixed, kneaded, and kneaded.

[4] Each end of the right spiral wing in the right spiral wing area and each end of the left spiral wing in the left spiral wing area, which are adjacent to each other with the gap area therebetween, are connected to the rod-shaped part. 4. The mixer according to claim 3, wherein the mixers are provided at different angles. Thereby, the material is well stirred, mixed, kneaded and kneaded.

[5] The number of right spiral wings in the one right spiral wing area is three, and the three right spiral wings are the same shape and the same size, and are provided on the rod-shaped portion at an equal angle to each other. The number of the left spiral wings in the one left spiral wing area is three, and the three left spiral wings are of the same shape and the same size and are provided on the rod-shaped portion at an equal angle to each other. The mixer according to claim 4, characterized in that: Thereby, the three kinds of materials can be simultaneously stirred, mixed, kneaded, and kneaded.

[6] Each end of the right spiral wing in the right spiral wing area and each end of the left spiral wing in the left spiral wing area, which are adjacent to each other with the gap area therebetween, are connected to the rod-shaped part. 6. The mixer according to claim 5, wherein the mixer is provided at a position at an intermediate angle. Thereby, the material is more uniformly or uniformly stirred, mixed, kneaded and kneaded.

[7] The circumferential tip of the right spiral wing or the left spiral wing and the inner surface of the cylinder are in contact with each other at a predetermined angle, and there is a step between the circumferential tip and the inner surface. The mixer according to claim 6. Thereby, the mixed resin material is squeezed with the right spiral wing or the left spiral wing without leakage, and is stirred, mixed, kneaded, and kneaded without waste without leakage. It is mixed, kneaded and kneaded.

[8] A step at each end of the right spiral wing or the left spiral wing is such that one is sharp at an acute angle and the other is not sharp at an obtuse angle, and these two steps are in contact with the inner surface of the cylinder. A mixer according to claim 7, characterized in that: Thereby, the resin material can be smoothly and diverted by the sharper one, and the non-pointed one does not interfere with the flow of the resin material without waste.

[9] The mixer according to claim 8, wherein the inclination angle of the spiral of the right spiral wing portion or the left spiral wing portion is 80 degrees to 30 degrees with respect to the longitudinal direction of the rod-shaped portion. When the inclination of the right spiral wing and the left spiral wing approaches the longitudinal direction of the rod-shaped portion, the resin material to be stirred and mixed is delivered more quickly, and the inclination of the right spiral wing and the left spiral wing is reduced to the rod-shaped portion. When approaching in the circumferential direction, the stirring and mixing of the resin material is further promoted. By the above, it is possible to balance the delivery of the viscous material and the stirring and mixing of the viscous material.

[10] The thickness of the wing of the right spiral wing or the left spiral wing is 0.5 to 5 mm, and the length from the center of the rod portion to the tip of the right spiral wing or the left spiral wing is The mixer according to claim 9, wherein the content is 1% to 25%. Thereby, although depending on the material, the strength of the right spiral wing or the left spiral wing is improved.

[11] The bottom of the groove between the plurality of right spiral blades or the groove between the plurality of left spiral blades coincides with the surface of the rod-shaped part. The mixer as described. Thereby, the materials are more smoothly stirred, mixed, kneaded, and kneaded. If the bottom of the groove is higher than the surface of the bar, the strength of the mixer increases, but the amount of mixable material decreases.If the bottom of the groove is lower than the surface of the bar, the strength of the mixer decreases. However, the amount of materials that can be mixed increases. If the bottom of the concave groove coincides with the surface of the rod-shaped portion, the two can be mixed in a balanced manner.

[12] The mixer according to claim 11, wherein the number of the right spiral wing area and the number of the left spiral wing area are the same. As a result, spiral stirring, mixing, kneading and kneading can be performed in a balanced manner to the left and right.

  Stir, mix, knead, and knead a plurality of types of viscous materials uniformly and smoothly. The viscous material is split and merged along the right and left spiral blades 5 and the concave grooves 7 to uniformly mix and knead. Three right spiral wings 5 project from the right spiral wing area 4 on the surface of the rod-shaped portion 2, and three left spiral wings 9... The right helical wing area 4 and the left helical wing area 8 are alternately formed along the longitudinal direction of the rod-shaped portion 2 by five pieces.

  As a result, the extruded viscous material is split and merged by turning right and left, and is uniformly and smoothly stirred, mixed, kneaded, and kneaded. Between the right spiral wing area 4 and the left spiral wing area 8, an orbiting void area 6 in which nothing is formed is formed, and the viscous material that has been moved and fed smoothly merges or splits. Then, stirring, mixing, kneading, and kneading are performed more reliably and uniformly.

Shows a mixer. The entirety of the rod-shaped portion 2, the right spiral wing area 4,..., The left spiral wing area 8,. The right spiral wing portion 5, the left spiral wing portion 9, and the circumferential gap area 6 are shown. The cross section of the right spiral wing 5 or the left spiral wing 9 is shown.

DESCRIPTION OF SYMBOLS 1 ... Mixing cylinder 2 ... Bar-shaped part 4 ... Right spiral blade part area 5 ... Right spiral blade part
6 orbiting void area (between right spiral wing area 4 and left spiral wing area 8)
7 ... groove 8 ... left spiral wing area 9 ... left spiral wing 18 ... end (right spiral wing 5 ...)
19 ... end (left spiral wing 9 ...)
20: step 26: delivery section (supply path)
27: Through hole (supply path) 32: Die 33: Extruder

Claims (12)

A rod-shaped part that is supported in a cylinder, is linear and long, and is almost cylindrical,
Protruding from the peripheral surface of the rod-shaped part, extending spirally with respect to the longitudinal direction of the rod-shaped part, and extending along the peripheral surface of the rod-shaped part in the right spiral direction, between the inner surface and the upper surface of the cylinder. A plurality of right spiral wings having no gaps, or projecting from the peripheral surface of the rod-shaped portion, extending spirally with respect to the longitudinal direction of the rod-shaped portion, and extending the peripheral surface of the rod-shaped portion in the left spiral direction. A plurality of left spiral wings along which there is substantially no gap between the inner surface and the upper surface of the cylinder,
The occupied angle of the right spiral wing or the left spiral wing relative to the rotation of the rod-shaped part is 90 degrees to 360 degrees, and the height of the right spiral wing and the left spiral wing from the surface of the rod-shaped part to the inner surface of the cylinder. The height is 40% to 95% of the entire inner radius of the cylinder,
Only the plurality of right spiral wings protrude along the circumference of the rod-shaped portion, or only the plurality of left spiral wings protrude along the circumference of the rod-shaped portion. The left spiral wing area provided, between these right spiral wing area or between the left spiral wing area, a void area formed around the circumference of the rod-shaped part, without any projection. And
A mixer wherein a plurality of types of viscous materials sent into the cylinder are mixed. A rod-shaped part that is supported in a cylinder, is linear and long, and is almost cylindrical,
Protruding from the peripheral surface of the rod-shaped part, extending spirally with respect to the longitudinal direction of the rod-shaped part, and extending along the peripheral surface of the rod-shaped part in the right spiral direction, between the inner surface and the upper surface of the cylinder. A plurality of right spiral wings with no gaps in
Protruding from the peripheral surface of the rod portion, extending spirally with respect to the longitudinal direction of the rod portion, extending along the left spiral direction on the peripheral surface of the rod portion, between the inner surface and the upper surface of the cylinder A plurality of left spiral wings with almost no gaps in
The right spiral wing or the left spiral wing has substantially the same shape and the same size and is substantially symmetric to each other. The occupied angle of the right spiral wing and the left spiral wing with respect to the rotation of the rod-shaped portion is 90 to 360 degrees. And the height of the right spiral wing portion and the left spiral wing portion from the surface of the rod portion to the inner surface of the cylinder is 40% to 95% of the entire inner radius of the cylinder,
Only the plurality of right spiral wings protrudes along the circumference of the rod-shaped portion, and only the plurality of left spiral wings protrudes along the circumference of the rod-shaped portion. Between the right spiral wing area or the left spiral wing area, and a void area formed around the circumference of the rod-shaped part and having no projection. And
A mixer wherein a plurality of types of viscous materials sent into the cylinder are mixed. The number of right spiral wings in the one right spiral wing area is three or more, and the three or more right spiral wings are the same shape and the same size, and are provided on the rod-shaped portion at an equal angle to each other.
The number of left spiral wings in the one left spiral wing area is three or more, and the three or more left spiral wings have the same shape and the same size, and are provided on the rod-shaped portion at an equal angle to each other. 3. The mixer according to claim 2, wherein   Each end of the right spiral wing portion of the right spiral wing portion area and each end of the left spiral wing portion of the left spiral wing portion area are adjacent to each other with the gap area interposed therebetween, with respect to the rod-shaped portion. 4. The mixer according to claim 3, wherein the mixers are provided at different angles. The number of the right spiral wings in the one right spiral wing area is three, and the three right spiral wings are the same shape and the same size, and are provided on the rod-shaped portion at an equal angle to each other.
The number of left spiral wings in the one left spiral wing area is three, and the three left spiral wings are of the same shape and the same size, and are provided on the rod-shaped portion at an equal angle to each other. The mixer according to claim 4, characterized in that:   Each end of the right spiral wing portion of the right spiral wing portion area and each end of the left spiral wing portion of the left spiral wing portion area are adjacent to each other with the gap area interposed therebetween, with respect to the rod-shaped portion. 6. The mixer according to claim 5, wherein the mixer is provided at a position at an intermediate angle.   7. The circulating tip of the right helical wing or the left helical wing and the cylinder inner surface are in contact with each other at a predetermined angle, and there is a step between the circulating tip and the inner surface. The mixer as described.   8. The mixer according to claim 7, wherein one of the steps at each end of the right spiral wing or the left spiral wing is sharp at an acute angle and the other is obtuse and not sharp.   9. The mixer according to claim 8, wherein the inclination angle of the spiral of the right spiral wing portion or the left spiral wing portion is 80 degrees to 30 degrees with respect to the longitudinal direction of the rod-shaped portion.   The thickness of the wing of the right spiral wing or the left spiral wing is 0.5 to 5 mm, and 1% to 1% of the length from the center of the rod to the tip of the right spiral wing or the left spiral wing. The mixer according to claim 9, wherein the content is 25%.   11. The mixer according to claim 10, wherein the bottom of the groove between the plurality of right spiral blades or the bottom of the groove between the plurality of left spiral blades coincides with the surface of the rod. . The mixer according to claim 11, wherein the number of the right spiral wing area and the number of the left spiral wing area are the same.

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