WO2003103927A1 - 押出機用スクリューとその製造方法、及び、タイヤ用ゴム部材とその製造方法 - Google Patents
押出機用スクリューとその製造方法、及び、タイヤ用ゴム部材とその製造方法 Download PDFInfo
- Publication number
- WO2003103927A1 WO2003103927A1 PCT/JP2003/007112 JP0307112W WO03103927A1 WO 2003103927 A1 WO2003103927 A1 WO 2003103927A1 JP 0307112 W JP0307112 W JP 0307112W WO 03103927 A1 WO03103927 A1 WO 03103927A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- screw
- extruder
- height
- rubber member
- tire
- Prior art date
Links
Classifications
-
- 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
- B29C48/397—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 a single screw
-
- 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
- B29C48/07—Flat, e.g. panels
-
- 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
- B29C48/507—Screws characterised by the material or their manufacturing process
-
- 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
- B29C48/59—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw
- B29C48/595—Screws characterised by details of the thread, i.e. the shape of a single thread of the material-feeding screw the thread having non-uniform width
-
- 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
-
- 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
- B29C48/64—Screws with two or more threads
- B29C48/65—Screws with two or more threads neighbouring threads or channels having different configurations, e.g. one thread being lower than its neighbouring thread
-
- 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
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
- B29L2030/002—Treads
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T152/00—Resilient tires and wheels
- Y10T152/10—Tires, resilient
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49316—Impeller making
Definitions
- the present invention relates to a screw used in an extruder, and more particularly to a screw structure for reducing pulsation of an extrudate and a method for producing the screw.
- an extruder using a screw is used.
- a kneaded rubber compound for a tread is heated by a warming roll to soften the material, and this is mixed with a hopper 51 of an extruder 50 as shown in FIG.
- the rubber material is conveyed to the distal end of the cylinder 53 by the screw 52, and is extruded from the base 55 of the head 54 attached to the distal end of the cylinder 53. Is formed into a predetermined cross-sectional shape, extruded, then cooled and cut to the required length.
- the extruder 50 generally has a short extruder length (L / D), the shape of the rubber material to be molded is easily affected by the rotation of the screw 52. Therefore, when the extrusion amount (discharge amount) is increased by changing the structure of the screw or the like, there is a problem that the discharge pulsation increases.
- the extrudate when the extrudate is a tread or the like, the above gauge fluctuations may Since it has a negative effect on mitigation and balance, it is desired to develop a screw that can reduce pulsation even when the extrusion rate is increased.
- the present invention has been made in view of the conventional problems, and an object of the present invention is to provide an extruder screw that can reduce the pulsation of an extrudate while maintaining a high discharge rate. Disclosure of the invention
- a rubber material supplied from a hopper port provided at a rear portion of a cylinder of an extruder is conveyed by a screw, and the rubber material is transferred from a die attached to a tip portion of the cylinder.
- the invention described in claim 2 is the extruder screw according to claim 1, wherein the height of the portion of the screw located below the hopper opening of the screw is lower than the height of the flight on the downstream side. It was done.
- the invention according to claim 3 is the screw for an extruder according to claim 1 or claim 2, wherein the number of screws on the upstream side of the screw is smaller than the number of screws on the downstream side. Things.
- the invention described in claim 4 is the screw for an extruder according to claim 1 or 2, wherein the screw interval on the upstream side of the screw is wider than the screw interval on the downstream side. .
- the invention according to claim 5 is the screw for an extruder according to claim 1 or 2, wherein the screw diameter on the upstream side of the screw is larger than the screw diameter on the downstream side. .
- the invention described in claim 6 is the extruder screw according to any one of claims 1 to 5, wherein the height of the fly located at the lower part of the mouth of the hopper is set to 2 times the screw diameter. ⁇ 6% lower.
- the invention described in claim 7 is characterized in that a hoist provided at the rear of a cylinder of the extruder is provided.
- ⁇ ⁇ A rubber material supplied from a parro is conveyed by a screw, and this rubber material is formed into a predetermined cross-sectional shape from a die attached to the tip of the cylinder and extruded.
- the screw height of the existing extruder screw located at the lower part of the hopper opening is reduced by 2 to 6% of the screw diameter so that the screw is located at the outer periphery of the screw. It is characterized by cutting the steel.
- the invention according to claim 8 is a method for producing a rubber member for a tire, characterized in that a rubber member for a tire is produced using the screw for an extruder according to any one of claims 1 to 6.
- An invention according to claim 9 is a rubber member for a tire manufactured using the screw for an extruder according to claims 1 to 6, wherein a variation in the gauge of the rubber member is 0. It is characterized by being less than 15 mm.
- FIG. 1 is a diagram showing a configuration of an extruder according to the best mode of the present invention.
- FIG. 2 is a partially enlarged view of the screw for an extruder according to the best mode.
- FIG. 3 is a diagram showing a configuration of a conventional extruder.
- FIG. 4 is a view showing a configuration of a high discharge type screw for an extruder.
- FIG. 5 is a diagram for explaining the gauge fluctuation of the extrudate.
- FIG. 1 is a schematic view showing an outline of an extruder 10 provided with an extruder screw according to the best mode, wherein 11 is a cylinder serving as a container, and 12 is rotatable in the cylinder 11 described above.
- the attached screw, 13 is a hopper for putting rubber material heated by a heating roll (not shown) into the cylinder 11,
- 14 is a head provided on the tip side of the cylinder 11, 1
- Reference numeral 5 denotes a base attached to the tip side of the head 14, and the base 15 is a member having an opening 15a for forming a required predetermined cross-sectional shape. So that it can be exchanged depending on the type, Removably attached.
- the discharge amount was as shown in FIG. 4 using the high discharge type screw 62 for the extruder.
- the tread gauge fluctuation is the same as that when the above-mentioned screw 62 is used (0.3 mm). ) Half (0.15 mm).
- the screw 12 for conveying the rubber material supplied from the hopper port 13 s provided at the rear of the cylinder 11 of the extruder 10
- the height of the flight portion 12z at the lower part of the hopper 13s is made lower than the height of the downstream flight portion 12a, so that a high discharge rate can be maintained.
- the pulsation of the extrudate can be reduced.
- a rubber member for a tire is manufactured using the screw 12 having the above configuration, a highly accurate rubber portion for a tire having a gauge variation of 0.15 mm or less can be obtained. It becomes possible to manufacture materials.
- the high discharge type screw 62 of the conventional example was improved to reduce the gauge fluctuation of the extrudate while maintaining the discharge amount.
- the present invention is limited to the above-described screw 62.
- the present invention can be applied to a screw of another structure such as a screw having a single thread structure as a whole.
- the screw 12 was used, which had a single-thread screw structure only on the hopper port 13 s side, with a screw structure in which the whole was a double-thread screw.
- the number of screws on the upstream side of the screw is smaller than the number of screws on the downstream side, such as using two threads on the upstream side and three threads on the downstream side. Then, the discharge amount of the extruded product is made uniform, and the gauge variation of the extruded product can be reduced.
- the discharge amount of the extrudate can be reduced. Further, since the uniformity can be obtained, the gauge fluctuation of the extruded product can be further reduced.
- the outer periphery of the fly portion 12 z at the lower part of the hopper port 13 s of the existing extruder screw 12 was cut, but a new extruder screw was prepared.
- the height of the fly portion at the lower portion of the screw hopper port 13 s may be reduced in advance by about 4% of the diameter of the screw 12.
- the height of the screw flight portion 12z at the portion located below the hopper opening 13s may be reduced by 2 to 6% of the screw diameter. If the lowering amount d is less than 2%, material return is small, and pulsation of the extrudate cannot be sufficiently reduced. On the other hand, if it exceeds 6%, the rubber member cannot be pushed into the cylinder 11 smoothly, so that the uniformity of the discharge amount is impaired.
- the lower part of the hopper opening of the screw for the extruder is used. Since the height of the fly at the part located at the lower part is lower than the height of the fly on the downstream side, the screw extrusion pressure and discharge pressure can be made uniform, and the extrudate can be maintained while maintaining a high discharge rate. Gauge fluctuation can be reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/516,516 US7811075B2 (en) | 2002-06-05 | 2003-06-05 | Screw for extruder and method of manufacturing the extruder, and rubber member for tire and method of manufacturing the rubber member |
ES03733292T ES2396332T3 (es) | 2002-06-05 | 2003-06-05 | Tornillo sinfín para extrusores y su proceso de producción, y elemento de caucho para neumáticos y su proceso de producción |
EP03733292A EP1512514B1 (en) | 2002-06-05 | 2003-06-05 | Extruder screw |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002164095A JP4034124B2 (ja) | 2002-06-05 | 2002-06-05 | 押出機用スクリュー及びその製造方法 |
JP2002-164095 | 2002-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003103927A1 true WO2003103927A1 (ja) | 2003-12-18 |
Family
ID=29727563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/007112 WO2003103927A1 (ja) | 2002-06-05 | 2003-06-05 | 押出機用スクリューとその製造方法、及び、タイヤ用ゴム部材とその製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US7811075B2 (ja) |
EP (1) | EP1512514B1 (ja) |
JP (1) | JP4034124B2 (ja) |
ES (1) | ES2396332T3 (ja) |
WO (1) | WO2003103927A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020138524A (ja) * | 2019-03-01 | 2020-09-03 | 住友ゴム工業株式会社 | ゴム押出機及びゴム押出方法 |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3868757B2 (ja) * | 2001-04-25 | 2007-01-17 | 株式会社神戸製鋼所 | ゴム系組成物の混練装置および混練方法 |
DE102005015537A1 (de) * | 2005-04-04 | 2006-10-05 | Harburg-Freudenberger Maschinenbau Gmbh | Schnecken-Extruder zur Verarbeitung von Polymeren |
DE102006042856B3 (de) * | 2006-09-13 | 2008-05-08 | STRICKER IRD-Patent GbR (vertretungsberechtigter Gesellschafter Urban Stricker, 57271 Hilchenbach-Vormwald) | Verfahren und Zuschnitt zum Herstellen eines Schneckenrohrförderers |
CA2848066C (en) * | 2011-09-16 | 2016-08-02 | Michelin Recherche Et Technique S.A. | Improvement of tire uniformity through identification of process harmonics using re-indexed partial uniformity waveforms |
IT201800007725A1 (it) * | 2018-08-01 | 2020-02-01 | Mbf Spa | Apparato di trasporto a coclea per bottiglie ed impianto di imbottigliamento dotato di tale apparato |
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JPS6164429U (ja) * | 1984-09-25 | 1986-05-01 | ||
US5004352A (en) * | 1987-05-25 | 1991-04-02 | Mitsubishi Jukogyo Kabushiki Kaisha | Plasticizing screw |
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-
2003
- 2003-06-05 US US10/516,516 patent/US7811075B2/en not_active Expired - Fee Related
- 2003-06-05 EP EP03733292A patent/EP1512514B1/en not_active Expired - Fee Related
- 2003-06-05 ES ES03733292T patent/ES2396332T3/es not_active Expired - Lifetime
- 2003-06-05 WO PCT/JP2003/007112 patent/WO2003103927A1/ja active Application Filing
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JPS6164429U (ja) * | 1984-09-25 | 1986-05-01 | ||
US5004352A (en) * | 1987-05-25 | 1991-04-02 | Mitsubishi Jukogyo Kabushiki Kaisha | Plasticizing screw |
JPH0424327U (ja) * | 1990-06-19 | 1992-02-27 | ||
JPH04176628A (ja) * | 1990-11-09 | 1992-06-24 | Toranosuke Murakami | ゴム熱入用非噛合型二軸押出機 |
JPH06182853A (ja) * | 1992-12-16 | 1994-07-05 | Bridgestone Corp | 押出装置 |
JPH06254943A (ja) * | 1993-03-10 | 1994-09-13 | Toyoda Gosei Co Ltd | 押出機及び押出機への材料供給方法 |
US5836680A (en) * | 1996-03-26 | 1998-11-17 | The Goodyear Tire & Rubber Company | Extruder with feedback loop control |
Non-Patent Citations (1)
Title |
---|
See also references of EP1512514A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020138524A (ja) * | 2019-03-01 | 2020-09-03 | 住友ゴム工業株式会社 | ゴム押出機及びゴム押出方法 |
JP7338171B2 (ja) | 2019-03-01 | 2023-09-05 | 住友ゴム工業株式会社 | ゴム押出機及びゴム押出方法 |
Also Published As
Publication number | Publication date |
---|---|
US20060062076A1 (en) | 2006-03-23 |
JP4034124B2 (ja) | 2008-01-16 |
EP1512514A4 (en) | 2010-07-21 |
JP2004009402A (ja) | 2004-01-15 |
US7811075B2 (en) | 2010-10-12 |
EP1512514B1 (en) | 2012-10-17 |
ES2396332T3 (es) | 2013-02-20 |
EP1512514A1 (en) | 2005-03-09 |
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