JPH02162022A - Manufacture of screw made of synthetic resin - Google Patents
Manufacture of screw made of synthetic resinInfo
- Publication number
- JPH02162022A JPH02162022A JP63318221A JP31822188A JPH02162022A JP H02162022 A JPH02162022 A JP H02162022A JP 63318221 A JP63318221 A JP 63318221A JP 31822188 A JP31822188 A JP 31822188A JP H02162022 A JPH02162022 A JP H02162022A
- Authority
- JP
- Japan
- Prior art keywords
- screw
- molded
- synthetic resin
- mold
- stock
- 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.)
- Granted
Links
- 229920003002 synthetic resin Polymers 0.000 title claims description 20
- 239000000057 synthetic resin Substances 0.000 title claims description 20
- 238000004519 manufacturing process Methods 0.000 title claims description 18
- 238000000465 moulding Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 58
- 239000000835 fiber Substances 0.000 claims description 18
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 229920001169 thermoplastic Polymers 0.000 claims description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 14
- 238000005520 cutting process Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 239000004696 Poly ether ether ketone Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 229920002530 polyetherether ketone Polymers 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/021—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles characterised by the shape of the surface
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
-
- 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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/32—Component parts, details or accessories; Auxiliary operations
- B29C43/36—Moulds for making articles of definite length, i.e. discrete articles
- B29C43/361—Moulds for making articles of definite length, i.e. discrete articles with pressing members independently movable of the parts for opening or closing the mould, e.g. movable pistons
- B29C2043/3615—Forming elements, e.g. mandrels or rams or stampers or pistons or plungers or punching devices
-
- 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
- B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
-
- 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
- B29L2001/00—Articles provided with screw threads
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- 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、長繊維で補強された合成樹脂製の螺子の製造
方法に関する。DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a method for manufacturing a synthetic resin screw reinforced with long fibers.
「従来の技術」
従来より、合成樹脂製の螺子は軽量かつ耐食性が要求さ
れる場合等において広く用いられているが、合成樹脂の
みにより製造された螺子はそのままでは強度が必ずしも
十分ではないので、カーボンファイバ等の長繊維により
補強することが従来より行なわれている。``Prior art'' Screws made of synthetic resin have been widely used in cases where light weight and corrosion resistance are required, but screws made only of synthetic resin do not necessarily have sufficient strength as they are. Conventionally, reinforcement with long fibers such as carbon fibers has been carried out.
そして、そのような長繊維で補強された螺子を製造する
には、長繊維を含有させた未硬化の樹脂から円柱状の素
材をつくり、その樹脂を硬化させた後に螺子山を切削加
工するという方法が従来−般に採用されていた。In order to manufacture screws reinforced with such long fibers, a cylindrical material is made from uncured resin containing long fibers, and after the resin is cured, the screw threads are cut. methods have been commonly employed in the past.
ところが、そのような方法では、螺子山を切削加工する
際に長繊維も切断されてしまい、長繊維による補強効果
が十分に発揮されず、螺子山が容易に破壊されてしまう
という問題があった。However, with such a method, the long fibers are also cut when cutting the screw threads, so the reinforcing effect of the long fibers is not sufficiently exerted, and the thread threads are easily destroyed. .
そこで、上記切削加工による製造方法の問題点を解決し
たものとして、第５図、第８図〜第１１図に示すような
製造方法が提案された。以下、これを説明する。Therefore, a manufacturing method as shown in FIGS. 5 and 8 to 11 has been proposed to solve the problems of the manufacturing method using cutting. This will be explained below.
まず、熱可塑性合成樹脂ｌ中に、高強度の長繊維２を多
数含有させ、それを押出成形あるいは引抜成形すること
によって、第５図に示すような円形棒状の素材３を形成
する。その際、長繊維２が素材３の長手方向にそって配
されるようになす。First, a large number of high-strength long fibers 2 are contained in a thermoplastic synthetic resin 1, and the material is extruded or pultruded to form a circular rod-shaped material 3 as shown in FIG. 5. At this time, the long fibers 2 are arranged along the longitudinal direction of the material 3.
ここで、熱可塑性合成樹脂１としては、例えば軽量で十
分な強度を有するＰＥＥＫ（ポリエーテルエーテルケト
ン）樹脂を用いることができ、長繊維２としては、例え
ばカーボンファイバを用いることができる。Here, as the thermoplastic synthetic resin 1, for example, PEEK (polyetheretherketone) resin which is lightweight and has sufficient strength can be used, and as the long fibers 2, for example, carbon fiber can be used.
つぎに、上記の素材３を所定の長さに切断し、第８図、
第９図に示すような金型４内に配置し、加熱して軟化さ
せる。Next, the above material 3 is cut to a predetermined length, and as shown in FIG.
It is placed in a mold 4 as shown in FIG. 9 and heated to soften it.
ここで、金型４は、螺子の軸部を成形するためのもので
、上型５と下型６とよりなる。上型５と下型６は、それ
ぞれ螺子山の半周分を成形するための成形面５ ａ、
６ ａと、互いに接合するための接合面５ ｂ、 ６
ｂを有する。この上型５と下型６とは、図示していない
位置決め具により、それぞれの成形面５ ａ、 ６ ａ
が互いに対向するように配され、かつそれぞれの成形面
５ ａ、 ６ ａが互いに対向したまま相対移動するよ
うになっている。Here, the mold 4 is for molding the shaft portion of the screw, and consists of an upper mold 5 and a lower mold 6. The upper mold 5 and the lower mold 6 each have a molding surface 5 a for molding a half circumference of the screw thread,
6 a, and a joint surface 5 b for joining each other, 6
It has b. The upper mold 5 and the lower mold 6 are positioned on their respective molding surfaces 5 a and 6 a by a positioning tool (not shown).
are arranged so as to face each other, and the respective molding surfaces 5a, 6a move relative to each other while facing each other.
その後、第１０図、第１１図に示すように、素材３を前
記成形面５ ａ、 ６ ａ間に挾むようにして上型５と
下型６とを圧接することにより、素材３をその径方向に
プレスすれば、全周に螺子山が形成された成形品７が得
られる。Thereafter, as shown in FIGS. 10 and 11, the material 3 is sandwiched between the molding surfaces 5a and 6a, and the upper mold 5 and the lower mold 6 are pressed against each other, so that the material 3 is radially moved. By pressing, a molded product 7 with threads formed around the entire circumference can be obtained.
上記方法によれば、長繊維２は、蛇行又は湾曲するよう
にして螺子山に全長にわたって残り、切断されることが
なく、また特に螺子山表面付近では螺子山の形状に沿う
ように蛇行する。このため、上記方法は切削加工による
方法に比べ、螺子の強度を向上させることができるとい
うものであった。According to the above method, the long fibers 2 remain on the screw thread over the entire length in a meandering or curved manner and are not cut, and particularly in the vicinity of the screw thread surface, the long fibers 2 meander along the shape of the thread thread. Therefore, the above method was able to improve the strength of the screw compared to the method using cutting.
「発明が解決しようとする課題」
ところが、上記プレス成形による方法は、以下のような
、さらなる改善を要する問題点を有していた。"Problems to be Solved by the Invention" However, the above-mentioned press molding method had the following problems that required further improvement.
すなわち、素材３の外径は、製造しようとする螺子の谷
径よりも大きく山径よりも小さい値で、金型５と金型６
を接合させた際に、素材３がちょうど前記成形面５ ａ
、 ６ ａ間全体に過不足なくゆきわたるような大きさ
でなければならない。このため、素材３の寸法精度の管
理が難しかった。具体的には、素材３の外径が所定の寸
法よりも大きいと、第１１図に示すように、プレスの際
に前記接合面５ ｂ、 ６ ｂ間に素材３の一部がはみ
出るようにして、前記成形品７に突起部８，８が形成さ
れてしまい、前記成形品７は不良品となっていた。また
、素材３の外径が所定の寸法よりも小さいと、プレスの
際に素材３が前記成形面５ ａ、 ６ ａ間に十分ゆき
わたらず、前記成形品７の螺子山は不完全なものとなり
、前記成形品７は不良品となっていた。That is, the outer diameter of the material 3 is larger than the root diameter of the screw to be manufactured and smaller than the thread diameter, and the mold 5 and the mold 6 are
When joining, the material 3 just touches the molding surface 5 a
, 6. It must be large enough to cover the entire space without excess or deficiency. For this reason, it was difficult to manage the dimensional accuracy of the material 3. Specifically, if the outer diameter of the material 3 is larger than a predetermined dimension, a part of the material 3 protrudes between the joint surfaces 5b and 6b during pressing, as shown in FIG. As a result, protrusions 8, 8 were formed on the molded product 7, and the molded product 7 became a defective product. Furthermore, if the outer diameter of the material 3 is smaller than a predetermined dimension, the material 3 will not spread sufficiently between the molding surfaces 5a and 6a during pressing, and the threads of the molded product 7 will be incomplete. Therefore, the molded product 7 was a defective product.
また、素材３はプレス成形の際にほとんど圧縮されない
ため、素材３内に空隙等がある場合には、その空隙が前
記成形品７内に残り、螺子の強度が低下することがあっ
た。このため、上記方法で製造された螺子は強度的に信
頼度の低いものとなっていた。Further, since the material 3 is hardly compressed during press molding, if there are any voids in the material 3, the voids may remain in the molded product 7, reducing the strength of the screw. For this reason, the screw manufactured by the above method has low reliability in terms of strength.
本発明は上記従来の問題点に鑑みなされたものであって
、素材の寸法精度の管理が容易で、プレス成形の際に素
材を十分に圧縮することができ強度的に信頼度の高い螺
子を得ることができる合成樹脂製螺子の製造方法を提供
することを目的としている。The present invention was made in view of the above-mentioned conventional problems, and it provides a screw that can easily manage the dimensional accuracy of the material, can sufficiently compress the material during press molding, and has high reliability in terms of strength. The object of the present invention is to provide a method for manufacturing a synthetic resin screw that can be obtained.
「課題を解決するための手段子
本発明の合成樹脂製螺子の製造方法は、熱可塑性合成樹
脂にカーボンファイバ等の長繊維を長手方向に配される
ように含有させてなる棒状の素材を、半周分の螺子山を
形成する成形面を有する金型内に挿入すると共にこれを
加熱して軟化させた後、素材の側面を前記成形面に押し
付けるようにプレスして、側面に半周分の螺子山が形成
された成形品を作成し、次に二つの該成形品を組み合わ
せて固定し一体となすことにより螺子を形成するように
したことを特徴としている。``Means for Solving the Problems'' The method for manufacturing a synthetic resin screw of the present invention includes a rod-shaped material made of a thermoplastic synthetic resin containing long fibers such as carbon fibers arranged in the longitudinal direction. The material is inserted into a mold having a molding surface that forms a half-circle screw thread, and is heated to soften it, and then pressed so as to press the side surface of the material against the molding surface to form a half-circle screw thread on the side surface. The present invention is characterized in that a molded product in which a ridge is formed is created, and then two of the molded products are combined and fixed to form a single body, thereby forming a screw.
１作用」
本発明の合成樹脂製螺子の製造方法において、素材は金
型の成型面に押し付けられ、素材の側面には半円周分の
螺子山が形成される。この際、素材は、素材を金型の成
形面に押し付ける力に応じて圧縮される。1. In the method for manufacturing a synthetic resin screw of the present invention, a material is pressed against the molding surface of a mold, and a half-circumference screw thread is formed on the side surface of the material. At this time, the material is compressed according to the force that presses the material against the molding surface of the mold.
「実施例」
以下、本発明の一実施例を第１図〜第７図により説明す
る。``Example'' An example of the present invention will be described below with reference to FIGS. 1 to 7.
素材としては、従来のプレス成形による方法と同じもの
、つまり第５図に示す素材３を用いることができる。As the material, the same material as in the conventional press forming method, that is, the material 3 shown in FIG. 5 can be used.
まず、素材３を所定の長さに切断し、第１図。First, the material 3 is cut into a predetermined length, as shown in FIG.
第２図に示すような金型９内に挿入し、加熱して軟化さ
せる。It is inserted into a mold 9 as shown in FIG. 2 and heated to soften it.
ここで、金型９は、無頭螺子を製造する場合に用いられ
るものであって、螺子部成形型１０と端面成形型１１．
１１とよりなり、半周分の螺子山を形成する成形面９ａ
と素材案内部９ｂを有する。Here, the mold 9 is used when manufacturing a headless screw, and includes a thread molding mold 10, an end face molding mold 11.
11 and forms a half-circle screw thread.
and a material guide section 9b.
螺子部成形型１０は、成形品を取り出す作業を容易にす
るために割型になっており、右型１０ａと左型１０ｂと
によりなっている。The thread molding die 10 is a split die to facilitate the work of taking out the molded product, and consists of a right die 10a and a left die 10b.
その後、プレスラム１２により、第３図、第４図に示す
ように、素材３の側面を前記成形面９ａに押し付けるよ
うにプレスする。こうして、第６図に示すような側面に
半周分の螺子山１３か形成された成形品１４が得られる
。Thereafter, the press ram 12 presses the side surface of the material 3 against the molding surface 9a, as shown in FIGS. 3 and 4. In this way, a molded product 14 having half a circumference of screw threads 13 formed on the side surface as shown in FIG. 6 is obtained.
この際、素材３の長繊維２は、第３図に示すように、成
形品１４内に全長にわたって残り、切断されることがな
い。また、素材３の外周部の長繊維２は、螺子山１３の
形状に沿うように蛇行して、螺子山１３内に入り込むよ
うに分布する。At this time, as shown in FIG. 3, the long fibers 2 of the material 3 remain within the molded product 14 over the entire length and are not cut. Further, the long fibers 2 on the outer periphery of the material 3 are distributed so as to meander along the shape of the screw threads 13 and enter into the thread threads 13.
つぎに、前記成形品１４を冷却し硬化させた後、前記成
形品１４を第６図において符号Ａ−Ａで示す断面で切断
し不要部分１４ａを除去すれば、第７図に示すように、
軸線を含む面で螺子を半分に切断したような形状の成形
品１５が得られる。そして、二つの該成形品１５を、そ
れぞれの螺子山の位相を合わせるようにして、その端面
１５ａにおいて接着し一体となし、切削加工等により軸
端面にすりわり等を形成すれば、無頭螺子が完成する。Next, after cooling and hardening the molded product 14, the molded product 14 is cut along the cross section indicated by the symbol A-A in FIG. 6, and the unnecessary portion 14a is removed, as shown in FIG. 7.
A molded product 15 having a shape like a screw cut in half along the plane including the axis is obtained. Then, if the two molded products 15 are bonded together at their end surfaces 15a so that the phases of their screw threads match, and a slot etc. is formed on the shaft end surface by cutting or the like, a headless screw is formed. is completed.
ここで、上記成形品１５の接着は、例えば熱溶着等によ
り行うことかできる。Here, the molded product 15 can be bonded by, for example, thermal welding or the like.
本実施例の合成樹脂製螺子の製造方法によれば、素材３
は金型９の成形面９ａ内を十分に埋めるだけの体積を有
していれば良く、素材３の寸法は特に精度を要求されな
い。このため、素材３の寸法精度の管理が従来よりも容
易になる。According to the method for manufacturing a synthetic resin screw of this example, the material 3
The material 3 only needs to have a volume sufficient to fill the molding surface 9a of the mold 9, and the dimensions of the material 3 do not require particular precision. Therefore, the dimensional accuracy of the material 3 can be managed more easily than before.
また、素材３はプレスの際に素材を金型の成形面に押し
付ける力に応じて圧縮されるので、素材３内に空隙等が
あっても、素材３をプレスする時にこの空隙を除去又は
減少させることができる。Also, since the material 3 is compressed according to the force that presses the material against the molding surface of the mold during pressing, even if there are voids in the material 3, these voids will be removed or reduced when the material 3 is pressed. can be done.
このため従来よりも強度的に信頼度の高い合成樹脂製螺
子を製造することができる。Therefore, it is possible to manufacture a synthetic resin screw that is stronger and more reliable than conventional screws.
さらに、第３図に示すように、螺子の長繊維２は、成形
品１４内に全長にわたって残り、切断されることがない
。また、素材３の外周部の長繊維２は、螺子山１３の形
状に沿うように蛇行して、螺子山１３内に入り込むよう
に分布するので、十分な螺子山の強度を有する長繊維で
補強された合成樹脂製螺子を製造することができる。Furthermore, as shown in FIG. 3, the long fibers 2 of the screw remain within the molded product 14 over the entire length and are not cut. In addition, the long fibers 2 on the outer periphery of the material 3 are distributed so as to meander along the shape of the screw threads 13 and enter into the screw threads 13, so they are reinforced with long fibers having sufficient thread strength. It is possible to manufacture synthetic resin screws.
「発明の効果」
本発明の合成樹脂製螺子の製造方法によれば、素材は金
型の成形面内を十分に埋めるだけの体積を有していれば
良く、素材の寸法は特に精度を要求されない。このため
、素材の寸法精度の管理が従来よりも容易になる。"Effects of the Invention" According to the method of manufacturing a synthetic resin screw of the present invention, the material only needs to have a volume sufficient to fill the molding surface of the mold, and the dimensions of the material require particular precision. Not done. Therefore, it becomes easier to manage the dimensional accuracy of the material than before.
また、素材はプレスの際に素材を金型の成形面に押し付
ける力に応じて圧縮されるので、素材内に空隙等があっ
ても、素材をプレスする時にこの空隙を除去又は減少さ
せることができる。このため従来よりも強度的に信頼度
の高い合成樹脂製螺子を製造することができる。In addition, the material is compressed according to the force that presses the material against the molding surface of the mold during pressing, so even if there are voids within the material, these voids can be removed or reduced when pressing the material. can. Therefore, it is possible to manufacture a synthetic resin screw that is stronger and more reliable than conventional screws.
第１図〜第４図、第６図、第７図は本発明の実施例を示
す図であって、第１図は素材を金型内に配した状態を示
す図、第２図は第１図の■−■断面図、第３図は素材を
成形した状態を示す図、第４図は第３図のＩ＋／−ＩＶ
断面図、第６図、第７図はそれぞれ成形品の斜視図であ
る。
また、第５図は本発明の実施例である合成樹脂製螺子の
製造方法及び従来の合成樹脂製螺子の製造方法に用いる
素材の斜視図である。
さらに、第８図〜第１１図は従来の合成樹脂製螺子の製
造方法を示す図であって、第８図は素材を金型内に配し
た状態を示す図、第９図は第８図のＩＸ−ＩＸ断面図、
第１０図は素材を成形した状態を示す図、第１１図は第
１Ｏ図のＸ［−Ｘｉ断面図である。1 to 4, 6, and 7 are views showing embodiments of the present invention, in which FIG. 1 shows the material placed in the mold, and FIG. 2 shows the material placed in the mold. Figure 1 is a cross-sectional view of ■-■ in Figure 1, Figure 3 is a diagram showing the state in which the material is molded, Figure 4 is I+/-IV in Figure 3.
The sectional view, FIG. 6, and FIG. 7 are perspective views of the molded product. Further, FIG. 5 is a perspective view of a material used in the method of manufacturing a synthetic resin screw according to an embodiment of the present invention and the conventional method of manufacturing a synthetic resin screw. Furthermore, FIGS. 8 to 11 are diagrams showing a conventional method for manufacturing a synthetic resin screw, in which FIG. 8 shows a state in which the material is placed in a mold, and FIG. 9 shows a state in which the material is placed in a mold. IX-IX sectional view of
FIG. 10 is a diagram showing a state in which the material is molded, and FIG. 11 is a cross-sectional view of X[-Xi in FIG. 1O.
Claims (1)
方向に配されるように含有させてなる棒状の素材を、半
周分の螺子山を形成する成形面を有する金型内に挿入す
ると共にこれを加熱して軟化させた後、素材の側面を前
記成形面に押し付けるようにプレスして、側面に半周分
の螺子山が形成された成形品を作成し、次に二つの該成
形品を組み合わせて固定し一体となすことにより螺子を
形成するようにした合成樹脂製螺子の製造方法。A rod-shaped material made of a thermoplastic synthetic resin containing long fibers such as carbon fibers arranged in the longitudinal direction is inserted into a mold having a molding surface that forms a half-circle thread. After heating and softening, the side of the material is pressed against the molding surface to create a molded product with half a circumference of threads formed on the side, and then the two molded products are combined. A method of manufacturing a synthetic resin screw, which forms a screw by fixing and integrating the screw.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318221A JP2664446B2 (en) | 1988-12-16 | 1988-12-16 | Manufacturing method of synthetic resin screw |
| US07/391,473 US5209888A (en) | 1988-12-16 | 1989-08-09 | Method for producing frp screw-like fastening elements |
| DE68919466T DE68919466T2 (en) | 1988-12-16 | 1989-08-11 | Process for the manufacture of helical, glass fiber reinforced fasteners. |
| EP89114898A EP0373294B1 (en) | 1988-12-16 | 1989-08-11 | Method for producing FRP screw-like fastening elements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63318221A JP2664446B2 (en) | 1988-12-16 | 1988-12-16 | Manufacturing method of synthetic resin screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02162022A true JPH02162022A (en) | 1990-06-21 |
| JP2664446B2 JP2664446B2 (en) | 1997-10-15 |
Family
ID=18096784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63318221A Expired - Lifetime JP2664446B2 (en) | 1988-12-16 | 1988-12-16 | Manufacturing method of synthetic resin screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2664446B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152945A (en) * | 1989-06-14 | 1992-10-06 | Applied Research Of Australia Pty. Ltd. | High strength fiber reinforced polymeric fasteners having threads, for example a nut and bolt |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4883167A (en) * | 1972-02-08 | 1973-11-06 |
-
1988
- 1988-12-16 JP JP63318221A patent/JP2664446B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4883167A (en) * | 1972-02-08 | 1973-11-06 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5152945A (en) * | 1989-06-14 | 1992-10-06 | Applied Research Of Australia Pty. Ltd. | High strength fiber reinforced polymeric fasteners having threads, for example a nut and bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2664446B2 (en) | 1997-10-15 |
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