WO2003045664A1 - Extruder - Google Patents
Extruder Download PDFInfo
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- WO2003045664A1 WO2003045664A1 PCT/JP2002/012491 JP0212491W WO03045664A1 WO 2003045664 A1 WO2003045664 A1 WO 2003045664A1 JP 0212491 W JP0212491 W JP 0212491W WO 03045664 A1 WO03045664 A1 WO 03045664A1
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- WO
- WIPO (PCT)
- Prior art keywords
- screw
- screws
- diameter
- extruder
- same
- Prior art date
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Classifications
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- 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
- B29C48/625—Screws characterised by the ratio of the threaded length of the screw to its outside diameter [L/D ratio]
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- 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
- B29C48/252—Drive or actuation means; Transmission means; Screw supporting means
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- 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
- B29C48/27—Cleaning; Purging; Avoiding contamination
- B29C48/2715—Cleaning; Purging; Avoiding contamination of plasticising units
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/402—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders the screws having intermeshing parts
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/405—Intermeshing co-rotating screws
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- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/41—Intermeshing counter-rotating screws
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- 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
- B29C48/535—Screws with thread pitch varying along the longitudinal axis
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- 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
- 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
- B29C48/04—Particle-shaped
-
- 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
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
- B29C48/425—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders using three or more screws
- B29C48/43—Ring extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/251—Particles, powder or granules
Definitions
- the present invention relates to an extruder for kneading and extruding materials by rotating a screw.
- an extrusion molding machine 10 that conveys the inside of the barrel 2 while heating and kneading the mixture, and extrudes the mixture into the die section 5 (for example, refer to Patent Document 1: Japanese Patent Application Laid-Open No. 5-504424).
- the extruder 10 having such a configuration there are a type in which the screw 1 has a single shaft and a type in which the screw 1 has two shafts. However, there are those in the same direction as shown in FIGS. 13 and 15, and those in a different direction as shown in FIG.
- the shape of the screw 1 also has a so-called trapezoidal screw shape shown in FIGS. 13 and 14, and a so-called corrugated screw shape shown in FIG. 15 other than the trapezoidal screw.
- extruders having three or more screws.
- a large number of screws are arranged circumferentially, or two sets of biaxial screws interlocking with each other are provided separately.
- the skews between the screws may be disengaged, or each skew of the same skew set may rotate in the same direction, but different screw threads may rotate in different directions. Therefore, there is no extruder in which the screw of the corrugated screw is horizontally arranged in three or more axes, and is engaged with each other and rotated in the same direction.
- a twin-screw extruder combining a twin-screw as described above, an increase in the amount of extruded material, that is, an increase in the throughput is required.
- a large diameter screw with a screw diameter means that the screw diameter exceeds about 9 O mm.
- the flight angle 19 of the screw shown in FIG. 17 is reduced.
- the decrease in the flight angle 19 decreases the wear resistance of the screw 1 and increases the amount of material leaking from the screw 1.
- the shaft diameter 18 of the screw 1 becomes thinner, which also causes a problem in the strength of the screw 1.
- the present invention has been made from such a viewpoint, and an object of the present invention is to provide an extruder capable of obtaining the same throughput as a conventional extruder without increasing the screw diameter. Disclosure of the invention
- the extruder according to the first aspect of the present invention includes three or more screws each having a corrugated shape having the same diameter and the same valley diameter, and having the same axial center dimension, and engaging with each other.
- a barrel having a screw loading portion into which all the screws are rotatably inserted, and which kneads the extruding material present in the grooves of the screw by the rotation of the screw by the driving device and transfers the material to the adjacent grooves of the screw;
- the diameter of the screw can be 5 O mm or less.
- a molding unit attached to the barrel and configured to mold the extrusion material extruded by the screw may be further provided.
- the extruder includes a screw, a driving device, and a barrel, and the three or more screws are provided in a corrugated shape having the same diameter and the same trough diameter. In other words, they were arranged so that they had the same center-to-center dimension, were engaged with each other, were parallel to each other, and were horizontal or almost horizontal.
- the same processing amount as that of the conventional extruder can be processed by a screw having a smaller diameter than the conventional one.
- FIG. 1 is a plan view of a screw provided in the extruder according to the embodiment of the present invention
- FIG. 2 is a cross-sectional view of the screw shown in FIG.
- FIG. 3 is a side view of the extruder according to the embodiment of the present invention.
- Fig. 4 explains how the extrusion material is transported by the screw shown in Fig. 1. It is a diagram for
- FIG. 5 is a diagram for explaining how the extrusion material is conveyed by the screw shown in FIG. 1,
- FIG. 6 is a diagram for explaining how the material for extrusion is transported by the screw shown in FIG. 1;
- FIG. 7 is a view for explaining a path in which the material for extrusion is transported in the barrel by the screw shown in FIG. 1,
- FIG. 8 is a diagram for explaining an example of an arrangement of a four-axis screw
- FIG. 9 is a diagram for explaining an example of an arrangement of a four-axis screw
- FIG. FIG. 11 is a diagram illustrating a structure of a speed reducer provided in the drive device illustrated in FIG. 3
- FIG. 12 is a diagram illustrating a configuration of a conventional extruder. Yes,
- FIG. 13 is a diagram showing an example of a form of a screw provided in the extruder shown in FIG. 12,
- FIG. 14 is a diagram showing an example of a form of a screw provided in the extruder shown in FIG. 12,
- FIG. 15 is a diagram showing an example of a form of a screw provided in the extruder shown in FIG. 12,
- FIG. 16 is a cross-sectional view of a conventional multi-screw extruder.
- FIG. 17 is a diagram for explaining each part of the conventional twin screw
- FIG. 18 is a diagram showing a structure of a cutting device connectable to the extruder shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
- the extruder 100 of the present embodiment includes a screw 101, a barrel 110, and a driving device 103, and further includes a die 100 corresponding to a molding unit. 5 can be provided.
- the barrel 102 is provided with a material supply section 104 for the extrusion material 13 1 and the extrusion material 1 conveyed by the screw 101.
- a vent portion 108 as an air vent portion of 31 and a heating / cooling device 107 for heating or cooling the extrusion material 131 are provided.
- FIG. 1 shows a form in which a hopper 106 for storing the pressing material 13 1 is attached to the material supply section 104, but the present invention is not limited to this form.
- extruder for supplying the extruding material 13 1 to the material supplying unit 104 forcibly or quantitatively may be connected.
- An example of the extrusion material 13 1 is a mixture of a plastic and a filler in a solid state, and the solid state is, for example, a pellet-powder state.
- the screw 101 has the same diameter 11 1 and the same valley diameter 112 as shown in FIGS. 1 and 2, respectively. It is composed of four screws 1 0 1—1 to 1 0 1—4 in a corrugated shape with the same ratio to the diameter 1 1 2 and each screw 1 0 1—1 to 1 0 1—4 Are arranged parallel to each other, horizontally or almost horizontally, with the same axial center dimensions 113.
- the term “substantially horizontal” means that the center of the four-axis screw 110 1-1 to 100-4 in the horizontal direction is the center, and It means the displacement of each screw 101-1 to 101-4 within a degree, and specifically, the value of ⁇ ⁇ is 5 degrees, preferably 3 degrees.
- the present invention is not limited to this, and three or more screws can be provided. Further, as described above, it is preferable that the diameter of the screw between the experimental machine and the actual machine does not change, and from the viewpoint of reducing the depth 1 18 of the screw groove 114 as described later, The diameter 111 of the screw 101 is preferably 5 Omm or less. From this viewpoint, a screw 110 having a diameter of, for example, about 11 to 15 mm can be used. Note that, in exceptional cases, three or more screws 110 each having a diameter 11 1 of, for example, about 15 O mm may be arranged.
- the barrel 102 has an inner surface 121 forming a screw loading portion 120.
- the stalee loading section 120 is provided with all the screws 110 1:! 110 1-4 are rotatably loaded, and more specifically, have a shape in which a gourd is connected in a plurality along the horizontal direction.
- the hatched gap 202 and the area in the vicinity thereof need to heat or cool the respective extrusion materials 131 in the screw sets 205 and 207, so that Heating and cooling must be performed more than in other places, and there is a problem that the barrel becomes large.
- the edge portions 209 and 2 of the barrel existing at the contact portions with the inner surface 206 and the inner surface 208 are shown.
- Edges 209 and 210 need to be cut off so that 10 is not damaged. Therefore, the extruded material accumulates as a dead space at the cut portion, so that there is a problem such as thermal deterioration of the extruded material.
- Screws 101-1 to 101-4 are arranged so that the gap 1 16 between the ridge of 101-4 and the gap 117 between the ridge of the screw 101-2 and the valley of the screw 101-3 are all the same. .
- each screw 101-1 to: L01-4 is rotated by the driving device 103 rotating the screw 101 in the direction of arrow 135 as shown in FIG.
- the extrusion material 131 existing in the groove 114 is kneaded. That is, the extrusion material 131 existing in each groove 114 is rotated and kneaded in the groove 114 as shown by an arrow 134 by the above rotation of the screw 101. Then, the respective extruding materials 131 are transferred to the adjacent grooves 114 of the screw 101 in the direction of arrow 132 shown in FIG. 1 while being kneaded. Also barrel 1
- the entire screw loading section 120 in the 02 has a screw 101-1, a screw 101-2, a screw 101-3, a screw 101-4, and a screw 101-4 along the shape of the inner surface 121.
- Extrusion material 131 is not kneaded in the order of 101-3, screw 101-2, and screw 101-1. Move around.
- each of the screws 101-1 to 101-4 has a filling state of the extrusion material 131,
- the kneading state can be the same.
- the cross section in the diameter direction of the screw is geometrically similar to the biaxial screw.
- the screw diameter can be made smaller than before and the depth 114 of the screw groove 114 can be reduced. Therefore, the surface length of the screw 101 and the inner surface length of the barrel are longer than before. Increase of the above surface length and inner surface length ⁇ ! As a result, the number of position exchanges in the extrusion material 13 1 becomes larger than in the past. Therefore, the kneadability of the extruding material 13 1 can be improved as compared with the conventional large-diameter twin-screw case.
- the screw diameter 1 11 by reducing the screw diameter 1 11, the depth 1 18 of the groove 114 becomes shallow, so that the temperature non-uniformity in the extrusion material 13 1 existing in one groove 114 is reduced. Become.
- the screw diameter can be reduced, and the amount of self-heating can be reduced. Therefore, according to the extruder 10 ° of the present embodiment, the extruded amount of the extruding material 13 1 can be reduced by the number of shafts of the screw 10 1 in a state where the change in the physical properties of the extruding material 13 1 is further reduced. It is also possible to control.
- the barrel 102 is also downsized by the downsizing of the screw diameter 111, the heat transfer of heating and cooling to the barrel 102 can be improved.
- the groove 114 of the screw 101 communicates with the material supply section 104 and the vent section 108, and since the depth 114 of the groove 114 is shallow as described above, It is easy to remove air from the extrusion material 13 1.
- the diameter of the screw 101 is reduced by controlling the amount of extrusion of the extrusion material 131 by the number of shafts of the screw 101. Due to the diameter reduction, the peripheral speed of the screw changes, the temperature of the extrusion material 131 in the screw groove 114 becomes uneven, the extrusion material 131 leaks from the screw, and the extruder 100 Various conventional problems, such as the installation area of, can be solved.
- the screw groove 1 14 can be made shallow by increasing the number of shafts as described above, and the material for extrusion 13 1 Since the temperature unevenness can be improved, it is possible to form a material with improved heating and cooling efficiency. Further, the greater the number of shafts, the more places where the screws are engaged with each other, so that the heating and cooling efficiency can be improved as described above while maintaining the self-cleaning property of the screw 101.
- the shape of the screw 101 is exemplified by a double thread, but the same effect as described above can be obtained by using a single thread or a triple thread.
- the shape of the screw 101 can be changed from the viewpoint of abrasion of the screw and leakage of the extrusion material 1331 from the outer periphery of the screw 101.
- the driving device 103 includes a motor 141 as a driving source for rotating the screw 101, and the motor 141 is connected to reduce the rotation of the motor 141. And a speed reducer 142 for transmitting to the screw 101.
- the speed reducer 14 2 is connected to one input gear 14 3 connected to the motor 14 1, and to each screw 10 1 -1 to 10 1 -4. It has four screw drive gears 144, two input gears 144 and two idle gears 144 connecting the screw drive gears 144. Decrease In the gearbox 142, the number of gears for driving the screw 101 and the reduction ratio are the same for each screw 101-1 to 101-4. Adjust the idle gear so that the number of gears that drive each screw and the reduction ratio are the same even when the number of screw shafts exceeds four.
- each screw 1 0 1 By using the speed reducer 1 4 2 having such a configuration, each screw 1 0 1
- the screw diameter is 4 O mm
- the above L / D is 30
- the extrusion temperature including PP (polypropylene) + rubber + talc is 13
- the molding temperature is 2
- a throughput of 50 kg Z was obtained. The same throughput is applied to the extruder of this embodiment.
- an extruder having four screws 101 having a diameter of 30 mm and an L / D of 30 is provided. Since the screw 101 is geometrically identical to the conventional screw diameter of 4 O mm, the overall length of the screw 101 is reduced from 1200 mm to 90 O mm. In other words, the total length of the extruder 100 can be reduced by 33%, the weight of the screw is reduced by about 18%, the installation area is reduced, and the heat energy by the heater etc. is reduced by reducing the heating and cooling area. Reduction can be achieved. Further, a processing device for processing an article formed by the die 105 can be connected to the discharge side of the die 105.
- an example of the above-mentioned processing apparatus includes: a water tank for cooling the molded product formed by the die 105; And a cutting device 160 shown in FIG.
- the product cut by the cutting device 160 becomes, for example, a pellet having a diameter of about 3 mm and a length of about 3 mm.
- the cutting device 16 comprises a roller 16 2 for further shaping the shape of the molded product 16 1 cooled in the water tank, a fixed blade 16 3, and a rotary blade 16 4. 6 2
- the molded product 161 which is continuously supplied from above to the fixed blade 163, is cut by the rotary blade 164 rotating in the direction of the arrow 1665 to obtain a product 1666.
- the extruder 100 of the present embodiment can obtain the same throughput as a conventional extruder having a large diameter and a twin screw.
- the throughput of the extruder 100 of the present embodiment which has four screws 100 with the same diameter as the diameter of the screw of the extruder, with the conventional twin-screw extruder, the number of screws is At first glance, it is considered that the throughput is also expected to be doubled.
- the extruder 100 of this embodiment has a processing capacity of about 2.5 to about 3 times that of the conventional extruder. Can be achieved. This is considered for the following reasons. That is, as shown in FIG. 4 to FIG.
- the extrusion material 13 1 moves in each groove 1 14 in the direction shown by the arrow 13 3.
- the surfaces of the adjacent screws 101 are shifted in opposite directions as indicated by the arrows, so that the moving direction of the extrusion material 13 1 is switched to a V-shape as indicated by the arrows, and the shear rate becomes faster. Due to this switching effect, the meltability and kneading properties of the material for extrusion 13 1 are improved. Therefore, the melting and kneading properties can be improved by increasing the number of the V-shaped portions 137.
- there are six V-shaped portions 1337 while in the conventional twin-screw extruder, there are two V-shaped portions.
- each screw 101 there are two gaps between the crest portion and the inner surface 121 of the valley groove 102, and a gap 111 between the adjacent screw 101. 5
- the total of three gaps is designed to be very narrow compared to the conventional model.
- the screws 101 are confidentially combined with each other, so that the effect of scraping the extruded material 13 1 on the surface of the mutually opposing screws 101, the so-called wiping effect, is extremely large. Become. Therefore, the leakage of the extrusion material 13 1 from each part is reduced, which leads to an increase in the above-mentioned processing capacity.
- the extruder 100 of the present embodiment can achieve a processing capacity of about 2.5 to about 3 times that of the conventional extruder due to the switching effect and the wiping effect described above. Note that by appropriately combining any of the above-described various embodiments, the effects of the respective embodiments can be achieved.
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- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02783698A EP1462235B1 (en) | 2001-11-30 | 2002-11-29 | Extruder |
JP2003547145A JPWO2003045664A1 (ja) | 2001-11-30 | 2002-11-29 | 押出機 |
US10/496,976 US7097442B2 (en) | 2001-11-30 | 2002-11-29 | Extruder |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001366879 | 2001-11-30 | ||
JP2001-366879 | 2001-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003045664A1 true WO2003045664A1 (en) | 2003-06-05 |
Family
ID=19176716
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2002/012491 WO2003045664A1 (en) | 2001-11-30 | 2002-11-29 | Extruder |
Country Status (4)
Country | Link |
---|---|
US (1) | US7097442B2 (ja) |
EP (1) | EP1462235B1 (ja) |
JP (2) | JPWO2003045664A1 (ja) |
WO (1) | WO2003045664A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10055772A1 (de) * | 2000-11-10 | 2002-05-29 | Buehler Ag | Ring-Extruder-Einzug |
DE10150006A1 (de) * | 2001-10-11 | 2003-04-17 | Buehler Ag | Ringextruder mit teilgekappten Förderelementen im Einzugsbereich |
DE10233214B4 (de) * | 2002-07-22 | 2005-01-27 | 3+Extruder Gmbh | Extruder zum kontinuierlichen Bearbeiten und/oder Verarbeiten von fließfähigen Materialien |
JP5175611B2 (ja) * | 2008-05-15 | 2013-04-03 | 三和化工株式会社 | 多軸押出機 |
CN101889719A (zh) * | 2009-05-19 | 2010-11-24 | 上海亦晨信息科技发展有限公司 | 一种具有独立分段控温的双混合区的挤出机螺杆结构 |
SA112330882B1 (ar) * | 2011-09-28 | 2018-01-24 | ارلانكسيو دوتشلاند جى ام بى اتش. | جهاز لإزالة مكونات متطايرة من وسط يحتوي على بوليمر |
AT512974B1 (de) * | 2012-05-23 | 2015-02-15 | Josef A Ing Blach | Mehrwellenextruder |
DE202013001817U1 (de) * | 2013-02-26 | 2014-06-04 | Vemag Maschinenbau Gmbh | Anordnung von dichtschließenden Förderschnecken |
HUE032444T2 (en) | 2014-06-04 | 2017-09-28 | Carl Aug Picard Gmbh | Snail element and process for additive manufacturing of screw elements |
WO2019010594A1 (zh) * | 2017-07-12 | 2019-01-17 | 李晓红 | 四螺杆挤条机 |
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- 2002-11-29 US US10/496,976 patent/US7097442B2/en not_active Expired - Lifetime
- 2002-11-29 EP EP02783698A patent/EP1462235B1/en not_active Expired - Lifetime
- 2002-11-29 JP JP2003547145A patent/JPWO2003045664A1/ja active Pending
- 2002-11-29 WO PCT/JP2002/012491 patent/WO2003045664A1/ja active Application Filing
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2008
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JPS6135775A (ja) | 1984-07-30 | 1986-02-20 | Takehiko Fujisawa | 食品押出成形機 |
JPS62286708A (ja) | 1986-06-05 | 1987-12-12 | Ishinaka Tekkosho:Kk | 混練機 |
JPH0631725A (ja) | 1992-03-17 | 1994-02-08 | Masao Moriyama | 四軸押出機 |
US5716159A (en) | 1995-05-29 | 1998-02-10 | Toshiba Kikai Kabushiki Kaisha | Spline and spline for rotary elements of multi spindle extruder |
DE19622582A1 (de) | 1996-02-06 | 1997-08-07 | Blach Josef A | Vorrichtung zum kontinuierlichen Bearbeiten von fließfähigen Materialien |
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Also Published As
Publication number | Publication date |
---|---|
US7097442B2 (en) | 2006-08-29 |
JP2009067062A (ja) | 2009-04-02 |
US20050048156A1 (en) | 2005-03-03 |
EP1462235A4 (en) | 2007-07-04 |
EP1462235B1 (en) | 2011-08-31 |
EP1462235A1 (en) | 2004-09-29 |
JP5031723B2 (ja) | 2012-09-26 |
JPWO2003045664A1 (ja) | 2005-04-07 |
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