JPH02265715A - Method of molding fast setting resin article having almost circular cross-section - Google Patents
Method of molding fast setting resin article having almost circular cross-sectionInfo
- Publication number
- JPH02265715A JPH02265715A JP8851889A JP8851889A JPH02265715A JP H02265715 A JPH02265715 A JP H02265715A JP 8851889 A JP8851889 A JP 8851889A JP 8851889 A JP8851889 A JP 8851889A JP H02265715 A JPH02265715 A JP H02265715A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- shaft
- axial direction
- liquid
- circular cross
- 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
- 229920005989 resin Polymers 0.000 title claims abstract description 51
- 239000011347 resin Substances 0.000 title claims abstract description 51
- 238000000465 moulding Methods 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims description 13
- 239000007788 liquid Substances 0.000 claims abstract description 24
- 239000004814 polyurethane Substances 0.000 abstract description 6
- 229920002635 polyurethane Polymers 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract description 3
- 229920001187 thermosetting polymer Polymers 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 description 18
- 239000002184 metal Substances 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 7
- 238000005266 casting Methods 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 5
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 5
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000006082 mold release agent Substances 0.000 description 2
- -1 polytetramethylene Polymers 0.000 description 2
- SBJCUZQNHOLYMD-UHFFFAOYSA-N 1,5-Naphthalene diisocyanate Chemical compound C1=CC=C2C(N=C=O)=CC=CC2=C1N=C=O SBJCUZQNHOLYMD-UHFFFAOYSA-N 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- MUPGKYQMGSMTPJ-UHFFFAOYSA-N N=C=O.N=C=O.OC1=CC=CC=C1CC1=CC=CC=C1O Chemical compound N=C=O.N=C=O.OC1=CC=CC=C1CC1=CC=CC=C1O MUPGKYQMGSMTPJ-UHFFFAOYSA-N 0.000 description 1
- 229930182764 Polyoxin Natural products 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920005906 polyester polyol Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 150000003077 polyols Chemical class 0.000 description 1
- YEBIHIICWDDQOL-YBHNRIQQSA-N polyoxin Polymers O[C@@H]1[C@H](O)[C@@H](C(C=O)N)O[C@H]1N1C(=O)NC(=O)C(C(O)=O)=C1 YEBIHIICWDDQOL-YBHNRIQQSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Landscapes
- Moulding By Coating Moulds (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は円筒状の速硬化性樹脂製品または芯金を有する
速硬化性樹脂製品の成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for molding a cylindrical fast-curing resin product or a fast-curing resin product having a core bar.
（従来の技術）
略円形断面を有する硬化性樹脂製品を得る方法としては
、従来、所望寸法の製品を得ることのできる成形による
収縮を考慮した金型を用い、該金型を約１００℃に予熱
しておき、ポリウレタンプレポリマーおよび硬化剤も同
様に約１００℃の液温にして混合撹拌して上記金型内に
注型し、３０〜７０分間程度の硬化時間を経て脱型し、
熟成時間（２０〜３０時間）経過後に製品を得るという
のが一般的であった。(Prior Art) Conventionally, as a method for obtaining a curable resin product having a substantially circular cross section, a mold that takes into account shrinkage due to molding that can obtain a product of a desired size is used, and the mold is heated to approximately 100°C. After preheating, the polyurethane prepolymer and curing agent are also brought to a liquid temperature of about 100°C, mixed and stirred, and cast into the mold, and removed from the mold after curing for about 30 to 70 minutes.
It was common to obtain the product after aging time (20 to 30 hours).
（発明が解決しようとする課題）
しかし、従来技術では金型を必要とし、そして金型およ
び原料樹脂を加熱するために多量の熱量を必要とし、且
つ硬化時間が必要であるなど、従来技術は生産性が低く
、製造コストの高いものであった。(Problems to be Solved by the Invention) However, the conventional technology requires a mold, a large amount of heat to heat the mold and raw resin, and a curing time. Productivity was low and manufacturing costs were high.
本発明は従来技術の有するこのような問題点に鑑みてな
されたものであり、その目的とするところは、生産性が
高く且つ安価な略円形断面を有する速硬化性樹脂製品の
成形方法を提供することにある。The present invention has been made in view of the problems of the prior art, and its purpose is to provide a method for molding fast-curing resin products having a substantially circular cross section that is highly productive and inexpensive. It's about doing.
（課題を解決するための手段）
上記目的を達成するために本発明に係る略円形断面を有
する速硬化性樹脂製品の成形方法の構成要旨は、
回転している軸に液状の速硬化性樹脂を注ぎながら必要
に応じて軸方向に移動することにある。(Means for Solving the Problems) In order to achieve the above object, the gist of the method for molding a fast-curing resin product having a substantially circular cross section according to the present invention is as follows: Liquid fast-curing resin is attached to a rotating shaft. It consists in moving axially as necessary while pouring.
回転軸の支持方法としては、製品が円筒状のものの場合
、内径相当径の軸を両センター押し法で支持し、あるい
はタイヤ等の芯金を有する製品を得る場合にはその芯金
を両センター押し法で支持すればよい０円筒状の製品を
得る場合、成形後の製品を容易に軸から離脱できるよう
に、通常軸となるものに予め離型剤が塗布される。To support the rotating shaft, if the product is cylindrical, support the shaft with a diameter equivalent to the inner diameter by pushing on both centers, or when obtaining a product with a core, such as a tire, by pushing the core on both centers. When obtaining a cylindrical product that can be supported by a pushing method, a release agent is usually applied to the shaft in advance so that the molded product can be easily removed from the shaft.
また、芯金を存する製品、例えば、ソリッドタイヤ、芯
金入りウレタンローラなど、ウレタン焼付ベアリング製
品を得る場合、芯金と速硬化性樹脂との接着を強固にす
るため、通常その芯金に予め接着剤が塗布される。In addition, when obtaining a urethane-baked bearing product such as a solid tire or a urethane roller with a core metal, the core metal is usually pre-applied to the core metal in order to strengthen the adhesion between the core metal and the fast-curing resin. Adhesive is applied.
なお、回転軸の支持方法としては両センター押し法に限
定されるものでなく、チャック等の他の手段を採用する
ことも可能である。Note that the method of supporting the rotating shaft is not limited to the two-center pushing method, and other means such as a chuck may also be employed.
このようにして得られた成形品は、最終的に外径を旋盤
加工にて切削されるか又は研磨加工を施されて所定寸法
の製品に仕上げられる。The molded product thus obtained is finally finished by cutting the outer diameter using a lathe or by polishing it into a product with predetermined dimensions.
（作用） 上記構成を有する本発明は以下のように作用する。(effect) The present invention having the above configuration operates as follows.
軸となるものを回転装置にセットして、その軸を回転さ
せながら液状の速硬化性樹脂を軸に注ぎながら軸方向に
適当な速度で移動することにより、速硬化性樹脂は軸か
ら垂れることなく速やかに硬化を始め、軸上の硬化しよ
うとしている樹脂と新しく注がれた液状の樹脂が軸方向
で逐次相互に融合して、略円形断面の樹脂層が軸方向に
形成される。樹脂製品が幅小の場合、必ずしも液状の速
硬化性樹脂を軸方向に移動せずとも成形が可能で、この
場合、軸上の硬化しようとしている樹脂層と該樹脂層の
上に注がれた液状の樹脂が渾然一体となって逐次層厚を
増し、所定厚の一体的な樹脂層が軸上に形成される。The shaft is set in a rotating device, and while the shaft is rotated, liquid fast-curing resin is poured onto the shaft and moved at an appropriate speed in the axial direction, so that the fast-curing resin drips from the shaft. The resin that is about to harden on the shaft and the newly poured liquid resin gradually fuse with each other in the axial direction, and a resin layer with a substantially circular cross section is formed in the axial direction. If the width of the resin product is small, it is possible to mold the liquid fast-curing resin without necessarily moving it in the axial direction. The liquid resin blends together and gradually increases in layer thickness, so that an integral resin layer of a predetermined thickness is formed on the shaft.
（実施例）
本発明の実施例１〜３について第１図に基づいて以下に
説明する。(Example) Examples 1 to 3 of the present invention will be described below based on FIG. 1.
第１図において、ｌは軸（芯金ともいう）で軸１に沿っ
た矢印イは回転方向を示す、２は軸ｌの一端を支持する
センター、３は軸１の他端部を把持するチャック、４は
２液温合注型機（図示せず）で混合された液状の樹脂を
吐出する樹脂吐出口、５は液状の速硬化性樹脂、６は硬
化したウレタン樹脂層、Ｄ、 、Ｄ、は回転装置の駆動
部である。In Fig. 1, l is a shaft (also called core metal), arrow A along axis 1 indicates the direction of rotation, 2 is a center that supports one end of shaft l, and 3 is a grip that grips the other end of shaft 1. A chuck, 4 is a resin discharge port for discharging liquid resin mixed with a two-liquid hot casting machine (not shown), 5 is a liquid fast-curing resin, 6 is a hardened urethane resin layer, D, D is a drive section of the rotating device.
１）第１実施例
直径３０Ｉｌｌｌ×長さ２５０ ａｍの軸１に離型剤を
塗布した後、該軸ｌを第１図のような構成の回転装置の
センター２およびチャック３で支持して、５０Ｒ／Ｍで
回転させながら、以下のように調製したポリウレタン原
料からなる液状の速硬化性樹脂５を樹脂吐出口４から軸
ｌ上に２００ ｇ／＋ｍｉｎ吐出させ、且つ樹脂吐出口
４を軸方向く左方向の矢印口の方向）に１５ｍｍ／ｓｅ
ｅの速度で移動させて、約３ｎ＋＋ａ厚みのウレタン樹
脂層６を１８秒間で軸１上に形成した。1) First Example After applying a mold release agent to a shaft 1 having a diameter of 30 Illll and a length of 250 am, the shaft 1 was supported by a center 2 and a chuck 3 of a rotating device configured as shown in FIG. While rotating at 50 R/M, 200 g/+min of liquid fast-curing resin 5 made of a polyurethane raw material prepared as follows was discharged from the resin discharge port 4 onto the axis l, and the resin discharge port 4 was oriented in the axial direction. 15mm/se in the direction of the left arrow
The urethane resin layer 6 having a thickness of about 3n++a was formed on the shaft 1 in 18 seconds by moving at a speed of 1.e.
上記で使用した速硬化性樹脂５は、以下の２種類の原料
ＡおよびＢを、原料Ａ／原料Ｂ＝１００ ／７７ （重
量比）となるように、ＵＮＩＰＲＥ ＧｍｂＨ製Ｍ−
１０型の２液温合注型機（図示せず）で混合撹拌した４
０°Ｃの液状のものである。The fast-curing resin 5 used above was prepared using M-
Mixed and stirred using a 10-type two-component hot casting machine (not shown) 4
It is a liquid at 0°C.
■原料Ａ ＰＰＧ（ポリオキシンプロピレングリコ
ール） −ＰＴＭＧ （ポリテトラメチレングリコール
）系のポリエーテルポリオールブレンドの商品名Ｂ ａ
ｙ ｔ ｅ ｃ Ｐ Ｕ ０３０８（Ｂａｙｅｒ社
製）のもの
■原料Ｂ ＰＰＧ−ＭＤｉ （メチレンビスフェノ
ールジイソシアネート）系プレポリマーである商品名Ｂ
ａｙｔｅｃ ＰＵＯ３０９（Ｂａｙｅｒ社製）のもの
２）第２実施例
直径１０＋＋ｗＸ長さ３４５ｆｌｌＩ１１の軸１に通常
の接着処理を施して、該軸１を第１図のような構成の回
転装置のセンター２およびチャック３で支持して３５Ｒ
／Ｍで回転させながら、実施例１と同様のポリウレタン
原料からなる液状の速硬化性樹脂５を樹脂吐出口４から
軸１上に１５０ ｇ／ｗｉｎ吐出させ、且つ樹脂吐出口
４を軸方向（左方向の矢印口の方向）に２６ｆｆｉｌ／
ｓｅｃの速度で移動させて、約２１厚みのウレタン樹脂
層６を１５秒間で軸ｌ上に形成した。■Raw material A: Product name of PPG (polyoxin propylene glycol)-PTMG (polytetramethylene glycol)-based polyether polyol blend B a
ytec PU 0308 (manufactured by Bayer) ■Raw material B Product name B, which is a PPG-MDi (methylene bisphenol diisocyanate)-based prepolymer
aytec PUO309 (manufactured by Bayer) 2) Second Example A shaft 1 with a diameter of 10++w and a length of 345flI11 is subjected to a normal adhesive treatment, and the shaft 1 is attached to the center 2 of a rotating device configured as shown in FIG. Support with chuck 3 and 35R
/M, the liquid fast-curing resin 5 made of the same polyurethane raw material as in Example 1 was discharged from the resin discharge port 4 onto the shaft 1 at a rate of 150 g/win, and the resin discharge port 4 was rotated in the axial direction ( 26ffil/in the direction of the left arrow
The urethane resin layer 6 having a thickness of about 21 cm was formed on the axis l in 15 seconds by moving at a speed of 15 seconds.
なお、本実施例における接着処理としては、［軸１にシ
ッットブラストを施して軸１表面を適当な粗度にした後
に洗浄し、ロードファーイースト社製接着剤（品番２１
８）を塗布して乾燥させる方法Ｊに従って行った。The adhesive treatment in this example was as follows: [Shit blasting was performed on the shaft 1 to make the surface of the shaft 1 to an appropriate roughness, and then the surface was washed, and adhesive manufactured by Lord Far East Co., Ltd. (product number 21) was used.
8) was applied and dried according to method J.
３）第３実施例
直径１００■×長さ４０■の芯金１に実施例２と同様の
接着処理を施して、該芯金１を第１回のような構成の回
転装置のセンター２およびチャック３で支持して１８Ｒ
／Ｍで回転させながら、実施例工と同様のポリウレタン
原料からなる液状の速硬化性樹脂５を樹脂吐出口４から
芯金１上に５００ ｇ／ｓｉｎ吐出させ、且つ樹脂吐出
口４を軸方向（左方向の矢印口の方向）にＱ、９ ｍｍ
／ｓｅｃの速度で移動させて、約２０＝厚みのウレタン
樹脂層６を５０秒間で芯金１上に形成した。3) Third Example A core bar 1 with a diameter of 100 cm and a length of 40 cm is subjected to the same adhesive treatment as in Example 2, and the core bar 1 is attached to the center 2 of a rotating device configured as in the first example. 18R supported by chuck 3
/M, a liquid fast-curing resin 5 made of the same polyurethane raw material as in the example was discharged at 500 g/sin from the resin discharge port 4 onto the core metal 1, and the resin discharge port 4 was rotated in the axial direction. (in the direction of the left arrow) Q, 9 mm
The urethane resin layer 6 having a thickness of about 20 mm was formed on the core bar 1 in 50 seconds by moving at a speed of 1/sec.
実施例１〜３のすべての場合において、液状の速硬化性
樹脂５は軸（芯金）ｌ上に注がれると瞬間に（数秒間で
）硬化するのが指触により確認できた。そして、２０°
Ｃの室温下で完全に使用可能となるまでの時間（以下、
可使時間という）は、６０分間であった。In all cases of Examples 1 to 3, it was confirmed by touch that when the liquid fast-curing resin 5 was poured onto the shaft (core metal) 1, it instantly hardened (in a few seconds). And 20°
The time it takes for C to become completely usable at room temperature (hereinafter referred to as
The pot life (referred to as pot life) was 60 minutes.
以上のようにして得られた実施例１〜３に係る成形品を
旋盤（図示せず）による切削加工により、実施例１につ
いては外径が３６ｍ＋ｓで内径が３０ｍの円筒状のもの
に仕上げ、実施例２、実施例３のものはそれぞれ外径を
１４ｍｍ、１４０ ｍｍに仕上げた。The molded products according to Examples 1 to 3 obtained as described above were cut using a lathe (not shown), and Example 1 was finished into a cylindrical product with an outer diameter of 36 m+s and an inner diameter of 30 m. The outer diameters of Examples 2 and 3 were 14 mm and 140 mm, respectively.
なお、芯金を有する長さの短い、例えば、ウレタン焼付
ベアリング製品を得る場合、実施例３のように１個づつ
ではなく、複数個同時に成形することも可能である６例
えば、第２図のように複数個のベアリング１ａに実施例
２と同様の接着処理を施して、ベアリング１ａとスリー
ブ１９とを交互に配設したものに両端に螺子部を有する
貫通軸２０を挿通し、且つ貫通軸２０の両端に螺合した
ナツト２１でベアリング１ａとスリーブ１９を締めつけ
ることによって全体を一本のロール状にして回転させな
がら、実施例１と同様のポリウレタン原料からなる液状
の速硬化性樹脂５を樹脂吐出口４からベアリング１ａお
よびスリーブ１９上に吐出させ、且つ樹脂吐出口４を左
矢印（口で示す）方向に移動させて複数個を同時に注型
し、注型完了後に貫通軸２０を抜いてベアリング１個づ
つに切断することにより複数個のウレタン焼付ベアリン
グ製品を得ることができる。In addition, when obtaining a short-length urethane-baked bearing product with a cored metal, for example, it is possible to mold a plurality of bearings at the same time instead of one at a time as in Example 3.6For example, as shown in FIG. A plurality of bearings 1a are subjected to the same adhesive treatment as in Example 2, and a through shaft 20 having threaded portions at both ends is inserted through the bearings 1a and sleeves 19 arranged alternately. By tightening the bearing 1a and the sleeve 19 with nuts 21 screwed together at both ends, the whole is formed into a single roll, and while rotating, a liquid fast-curing resin 5 made of the same polyurethane raw material as in Example 1 is discharged. The resin is discharged from the outlet 4 onto the bearing 1a and the sleeve 19, and the resin discharge port 4 is moved in the direction of the left arrow (indicated by the mouth) to cast a plurality of resins at the same time.After the casting is completed, the through shaft 20 is removed and the bearing is removed. A plurality of urethane baked bearing products can be obtained by cutting into pieces one by one.
なお、各ベアリングｌａの間に配設されたスリーブ１９
は、上記方法で同時に注型された複数個のウレタン焼付
ベアリング製品から個々のベアリング製品を切り出す際
の切り代および各ベアリング製品のウレタン樹脂はみ出
し厚み（ｔυを確保するために必要なもので、スリーブ
１９の厚み（ｔ、）は、Ｌ、−上記切り代＋２×ｔｌに
相当する厚みとされる。（ｔ（１、ｔｌについては、ベ
アリングｌａの断面を示す第３図参照）次に比較例１、
比較例２についてそれぞれ第４図、第５図に基づいて説
明する。Note that the sleeve 19 disposed between each bearing la
is necessary to ensure the cutting allowance and the urethane resin protrusion thickness (tυ) of each bearing product when cutting out individual bearing products from multiple urethane baked bearing products cast simultaneously by the above method, and the sleeve The thickness (t,) of No. 19 is the thickness equivalent to L, - the above cutting allowance + 2 x tl. (For t (1, tl, see Fig. 3, which shows the cross section of the bearing la)) Next, a comparative example 1,
Comparative Example 2 will be explained based on FIG. 4 and FIG. 5, respectively.
第４図において、７は中型、８は台座、９は外型、１０
は注型口、１１は容器、１２は空隙である。In Figure 4, 7 is the medium size, 8 is the pedestal, 9 is the outer type, and 10
1 is a casting spout, 11 is a container, and 12 is a void.
第５図において、１３は芯金、１４は台座、１５は外型
、１６は蓋、１７は空隙、１８は容器である。In FIG. 5, 13 is a metal core, 14 is a pedestal, 15 is an outer mold, 16 is a lid, 17 is a gap, and 18 is a container.
４）比較例１ 第４図に示す構成の金型を用いた。4) Comparative example 1 A mold having the configuration shown in FIG. 4 was used.
中型７の外面および外型９の内面には離型剤を塗布し、
中型７、台座８、外型９および注型口１０を約１１０°
Ｃに予熱した。原料樹脂は、以下に示す原料Ｃを９０℃
に、また原料りを１２０°Ｃに溶解した後、原料Ｃ／原
料Ｄ ＝ １００／１３の重量比で混合した液状原料で
、この液状原料を容器１１に満たし、注型口１０を通し
て空隙１２に注ぐと、液状原料は約３５分間で硬化して
脱型することができた。Applying a mold release agent to the outer surface of the middle mold 7 and the inner surface of the outer mold 9,
Middle mold 7, pedestal 8, outer mold 9 and pouring spout 10 at approximately 110°
Preheated to C. The raw material resin is the raw material C shown below at 90°C.
In addition, after melting the raw material at 120°C, the container 11 is filled with the liquid raw material mixed at a weight ratio of raw material C/raw material D = 100/13, and the liquid raw material is poured into the cavity 12 through the casting port 10. Once poured, the liquid material hardened in about 35 minutes and could be demolded.
■原料Ｃ三井東圧化学■製のポリテトラメチレングリコ
ールとトリレンジイソシアネ−トからなるプレポリマー
である商品名ハイブレンＬ−１００のもの
■原料Ｄ イハラケミカル社製のキュアミンＭＴ（３
，３’−ジクロル−４，４″−ジアミノジフェニルメタ
ン）
５）比較例２
第５図に示す構成の金型を用いた。芯金１３には実施例
２と同様の接着処理を施し、芯金１３、台座１４、外型
１５および蓋１６を約１１０℃に予熱した。原料樹脂は
、ポリエステルポリオール１００重量部と１，５ナフチ
レンジイソシアネート（ＮＤＩ）２５重量部とを減圧反
応槽内で撹拌重合した後、１．４−ブタンジオールと混
合撹拌して１１０℃の液状原料としたもので、この液状
原料を容器１８に満たして空隙１７に注ぐと、液状原料
は約２０分間で硬化して芯金を有する樹脂製品が成形で
きた。■Raw material C: Mitsui Toatsu Chemical ■Prepolymer made of polytetramethylene glycol and tolylene diisocyanate, trade name Hyblen L-100 ■Raw material D: Curemin MT (3) manufactured by Ihara Chemical Co., Ltd.
, 3'-dichloro-4,4''-diaminodiphenylmethane) 5) Comparative Example 2 A mold having the configuration shown in Fig. 5 was used.The core bar 13 was subjected to the same adhesive treatment as in Example 2, and 13. The pedestal 14, the outer mold 15, and the lid 16 were preheated to about 110°C.The raw resin was prepared by stirring and polymerizing 100 parts by weight of polyester polyol and 25 parts by weight of 1,5 naphthylene diisocyanate (NDI) in a reduced pressure reaction tank. After that, it is mixed and stirred with 1,4-butanediol to obtain a liquid raw material at 110°C. When this liquid raw material is filled into the container 18 and poured into the gap 17, the liquid raw material hardens in about 20 minutes and forms a core. A resin product containing gold could be molded.
なお、上記のようにして成形された比較例１および２に
係る樹脂製品の可使時間は２４時間であった。The pot life of the resin products of Comparative Examples 1 and 2 molded as described above was 24 hours.
比較例１．２において、生産量が少ない場合は所望寸法
より径大で成形し、この成形品の外径を旋盤加工で仕上
げることが多い。In Comparative Example 1.2, when the production volume is small, the molded product is often molded with a diameter larger than the desired size, and the outer diameter of this molded product is finished by lathe processing.
（発明の効果） 上述のように構成される本発明は以下の効果を奏する。(Effect of the invention) The present invention configured as described above has the following effects.
■成形時間が大幅に短縮されるので、生産性が約２０倍
向上する。■Molding time is significantly shortened, improving productivity by approximately 20 times.
■金型購入のための設備コストが不要で、熱源としては
速硬化性樹脂を約４０℃に加熱するだけのものでよいか
ら、動力コストが極僅かで済む。■Equipment costs for purchasing molds are not required, and the heat source only needs to be one that heats the fast-curing resin to about 40°C, so power costs are minimal.
第１図は本発明の実施例１〜３に係る成形品を成形する
方法を示す図、第２図は芯金を有する短寸のウレタン焼
付ベアリング製品を成形する方法を示す図、第３図は第
２図のベアリングの断面図、第４図、第５図はそれぞれ
比較例１、比較例２に係る成形品を成形するための金型
の断面図である。Fig. 1 is a diagram showing a method of molding molded products according to Examples 1 to 3 of the present invention, Fig. 2 is a diagram showing a method of molding a short urethane baked bearing product having a metal core, and Fig. 3 2 is a cross-sectional view of the bearing shown in FIG. 2, and FIGS. 4 and 5 are cross-sectional views of molds for molding molded products according to Comparative Examples 1 and 2, respectively.
Claims (1)
に応じて軸方向に移動することを特徴とする略円形断面
を有する速硬化性樹脂製品の成形方法A method for molding a fast-curing resin product having a substantially circular cross section, characterized by pouring liquid fast-curing resin onto a rotating shaft and moving it in the axial direction as necessary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8851889A JPH02265715A (en) | 1989-04-06 | 1989-04-06 | Method of molding fast setting resin article having almost circular cross-section |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8851889A JPH02265715A (en) | 1989-04-06 | 1989-04-06 | Method of molding fast setting resin article having almost circular cross-section |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02265715A true JPH02265715A (en) | 1990-10-30 |
Family
ID=13945051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8851889A Pending JPH02265715A (en) | 1989-04-06 | 1989-04-06 | Method of molding fast setting resin article having almost circular cross-section |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02265715A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54107969A (en) * | 1978-02-13 | 1979-08-24 | Showa Electric Wire & Cable Co Ltd | Production of rubber or plastic coated roll |
| JPS6140119A (en) * | 1984-06-08 | 1986-02-26 | バイエル・アクチエンゲゼルシヤフト | Method and device for continuously manufacturing long-sized hollow body, particularly, tube or pipe or inner-surface liner thereof from liquefied material such as reaction mixture or melt |
-
1989
- 1989-04-06 JP JP8851889A patent/JPH02265715A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54107969A (en) * | 1978-02-13 | 1979-08-24 | Showa Electric Wire & Cable Co Ltd | Production of rubber or plastic coated roll |
| JPS6140119A (en) * | 1984-06-08 | 1986-02-26 | バイエル・アクチエンゲゼルシヤフト | Method and device for continuously manufacturing long-sized hollow body, particularly, tube or pipe or inner-surface liner thereof from liquefied material such as reaction mixture or melt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3177280A (en) | Process for the manufacture of polyurethane coated balls | |
| US2862806A (en) | Molded rotative abrasive articles and method of making | |
| US3364630A (en) | Abrasive roll | |
| CN105014502B (en) | Pitch for large-aperture optical glass processing polishes the forming method of lacquer disk(-sc) | |
| US11090778B2 (en) | Methods and systems for centrifugal casting of polymer polish pads and polishing pads made by the methods | |
| US6439873B1 (en) | Golf ball casting mold assembly | |
| JPH02265715A (en) | Method of molding fast setting resin article having almost circular cross-section | |
| US1981970A (en) | Abrasive wheel and a method of making the same | |
| WO2015187338A1 (en) | Centrifugal casting of polymer polish pads | |
| EP0978362A2 (en) | Method and apparatus for forming polyurethane cover on golf ball core | |
| US6328921B1 (en) | De-molding method and apparatus for a golf ball | |
| US3639958A (en) | Roller and method of making same | |
| US6840850B2 (en) | Abrasive grindstone and method for making same | |
| CN106553301A (en) | A kind of centrifugal method for melting note making rubber rollers | |
| JP4773613B2 (en) | External mold frame for forming sponge water-absorbing roller, molding method therefor, and molding method for sponge water-absorbing roller using outer mold frame | |
| JPH02276627A (en) | Elastic pipe and manufacture thereof | |
| JPS6339769A (en) | Manufacture of polishing pad | |
| JP2016199412A (en) | Manufacturing method and manufacturing jig for ceramic container | |
| KR20200020455A (en) | Tension roller and method of manufacturing thereof | |
| EP1494811B1 (en) | Roller structure and method for the manufacture thereof | |
| KR101963632B1 (en) | Manufacturing method of spinner for manufacturing glass fiber insulation sheet | |
| WO2001064347A2 (en) | Spiral concentrator unit | |
| CN102744692A (en) | Manufacturing method of steel rail grinding wheel | |
| JP3769135B2 (en) | Manufacturing method of endless belt | |
| JP2001179624A (en) | Dressing, honing and grinding tool |