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 |
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