JPS6418628A - Extrusion molding of flexible continuous rack gear made of synthetic resin - Google Patents
Extrusion molding of flexible continuous rack gear made of synthetic resinInfo
- Publication number
- JPS6418628A JPS6418628A JP62176473A JP17647387A JPS6418628A JP S6418628 A JPS6418628 A JP S6418628A JP 62176473 A JP62176473 A JP 62176473A JP 17647387 A JP17647387 A JP 17647387A JP S6418628 A JPS6418628 A JP S6418628A
- Authority
- JP
- Japan
- Prior art keywords
- rack gear
- passed
- resin
- polyacetal
- bath
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
PURPOSE:To get rid of decrease in mechanical physical properties when a resin strand is formed and to obtain a rack gear with high reliability, by adding proper amt. of elastomer to polyacetal and carrying out continuously a heat- crystallization process, a forming process and a heating process on the extrusion- molded resin strand. CONSTITUTION:A composite material where polyacetal is used as a base material and, a composite material wherein 5-60%, preferably 10-30% of urethrae modified polyacetal is then added is used. A molten resin is continuously extruded from a mold nozzle 2 as a resin strand 3 and passed through the first oil bath 4 at 80-160 deg.C for 30-90sec, and successively passed through the second oil bath 5 at 60-140 deg.C for 30-90sec. The semi-molten resin passed through there is passed through a gap between a rack gear roll 8 and an acceptor roll 9 at room temp. and specific projections and recesses are thereby formed and a rack gear 30 is continuously press-treated. The resin 31 where a rack gear 30 is formed is passed through an annealing treating bath 10 at 150-180 deg.C for 60-120sec and then through a washing bath 12 wherein degreasing treatment of the product surface is done.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62176473A JPS6418628A (en) | 1987-07-15 | 1987-07-15 | Extrusion molding of flexible continuous rack gear made of synthetic resin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62176473A JPS6418628A (en) | 1987-07-15 | 1987-07-15 | Extrusion molding of flexible continuous rack gear made of synthetic resin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6418628A true JPS6418628A (en) | 1989-01-23 |
Family
ID=16014289
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62176473A Pending JPS6418628A (en) | 1987-07-15 | 1987-07-15 | Extrusion molding of flexible continuous rack gear made of synthetic resin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6418628A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5225867A (en) * | 1990-07-03 | 1993-07-06 | Brother Kogyo Kabushiki Kaisha | Chromatic image recording apparatus |
JP2014047262A (en) * | 2012-08-30 | 2014-03-17 | Asahi Kasei Chemicals Corp | Sliding member for conveying device |
US8808728B2 (en) | 2004-02-06 | 2014-08-19 | Unitika Ltd. | Feed additive for laying hen and feed containing the same |
US10429642B2 (en) | 2015-09-25 | 2019-10-01 | Denso Corporation | Head-up display device |
-
1987
- 1987-07-15 JP JP62176473A patent/JPS6418628A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5225867A (en) * | 1990-07-03 | 1993-07-06 | Brother Kogyo Kabushiki Kaisha | Chromatic image recording apparatus |
US8808728B2 (en) | 2004-02-06 | 2014-08-19 | Unitika Ltd. | Feed additive for laying hen and feed containing the same |
JP2014047262A (en) * | 2012-08-30 | 2014-03-17 | Asahi Kasei Chemicals Corp | Sliding member for conveying device |
US10429642B2 (en) | 2015-09-25 | 2019-10-01 | Denso Corporation | Head-up display device |
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