JPH0356111B2 - - Google Patents
Info
- Publication number
- JPH0356111B2 JPH0356111B2 JP18884084A JP18884084A JPH0356111B2 JP H0356111 B2 JPH0356111 B2 JP H0356111B2 JP 18884084 A JP18884084 A JP 18884084A JP 18884084 A JP18884084 A JP 18884084A JP H0356111 B2 JPH0356111 B2 JP H0356111B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- magnet
- screws
- resin
- magnets
- 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.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000000696 magnetic material Substances 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 3
- 230000032258 transport Effects 0.000 claims 2
- 238000000034 method Methods 0.000 description 39
- 229920005989 resin Polymers 0.000 description 28
- 239000011347 resin Substances 0.000 description 28
- 238000010438 heat treatment Methods 0.000 description 20
- 230000006698 induction Effects 0.000 description 13
- 239000000843 powder Substances 0.000 description 9
- 229920001778 nylon Polymers 0.000 description 8
- 239000004677 Nylon Substances 0.000 description 7
- 229920000571 Nylon 11 Polymers 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- -1 polytrifluoroethylene Polymers 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 238000010924 continuous production Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920006122 polyamide resin Polymers 0.000 description 2
- 229920001225 polyester resin Polymers 0.000 description 2
- 239000004645 polyester resin Substances 0.000 description 2
- 229920001721 polyimide Polymers 0.000 description 2
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 150000002910 rare earth metals Chemical class 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 1
- 229910017709 Ni Co Inorganic materials 0.000 description 1
- 229910003267 Ni-Co Inorganic materials 0.000 description 1
- 229910003262 Ni‐Co Inorganic materials 0.000 description 1
- 229920000299 Nylon 12 Polymers 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 239000005007 epoxy-phenolic resin Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 235000019359 magnesium stearate Nutrition 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920001643 poly(ether ketone) Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920006380 polyphenylene oxide Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Landscapes
- Specific Conveyance Elements (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Description
【発明の詳細な説明】
発明の目的
「産業上の利用分野」
本発明はゆるみ止めねじの製造方法に関するも
のであり、本発明方法により製造されたゆるみ止
めねじは、自動車、電機、機械等の製造業の分野
を始めとして、ねじを使用する分野に巾広く利用
されるものである。[Detailed Description of the Invention] Purpose of the Invention "Field of Industrial Application" The present invention relates to a method for manufacturing a locking screw, and the locking screw manufactured by the method of the present invention can be used in automobiles, electrical equipment, machinery, etc. It is widely used in fields where screws are used, including the manufacturing industry.
「従来の技術」
ナイロン11、ナイロン12のごとき熱可塑性樹脂
をねじ部の一部に形成させることにより繰り返し
使用可能なゆるみ止めねじとすることは、たとえ
ば特公昭44−15713号公報に記載のように公知で
ある。その製造方法としてはねじ部に溝又は穴
を形成せしめ、これに塊状の樹脂を埋め込む方法
（特公昭43−20822、特公昭44−4062）樹脂小片
を加熱するか、溶融状態でノズルから吐出させ、
ねじ部の一部に固定する方法加熱したねじ粉末
状樹脂又はシート状樹脂を施し融着固定する方法
（特公昭44−15713、特公昭52−18342）等が知ら
れている。``Prior art'' A method of forming a thermoplastic resin such as nylon 11 or nylon 12 into a part of the threaded portion to create a locking screw that can be used repeatedly is described in Japanese Patent Publication No. 15713/1983, for example. It is publicly known. The manufacturing method is to form a groove or hole in the threaded part and fill it with a lump of resin (Japanese Patent Publication No. 43-20822, Japanese Patent Publication No. 44-4062), by heating a small piece of resin or by discharging it from a nozzle in a molten state. ,
Methods of fixing to a part of the threaded portion include a method of applying heated screw powder resin or sheet resin and fusing and fixing the screw (Japanese Patent Publication No. 44-15713, Japanese Patent Publication No. 18342-1983).
これらの方法で得られたものはいずれも繰り返
し使用に耐え再使用可能な特徴を有するものであ
るが、の方法はねじ自体に加工を施すためねじ
自体の強度が低下したり、コスト的に高価格が避
けられない等の欠点があり、の方法は樹脂を加
熱する方式であり、熱伝導、熱容量の違いにより
金属側を加熱しておく方法に比較して密着力を向
上させる点からみて非効率的であり、密着力作業
性の点から有利とは云い難い方法であるため、現
在はもつぱらの方法、特に加熱したねじに粉末
樹脂を施し融着固定する方法が採用されている。
この方法においてねじの搬送方式としては、特公
昭52−18342、特開昭55−78812、特開昭57−
154510号公報に見られるように、ねじの頭部を利
用して、２本の平行する帯状のベルトにより首吊
り方式で搬送する方法、特開昭57−73215号公報
にあるように磁石による担持方法あるいは特公昭
52−18342号の改良方法として特公昭53−39542号
公報の様に１本１本ねじを保持する円盤状の搬送
装置が知られている。 All of the products obtained using these methods have the characteristics of being able to withstand repeated use and being reusable, but the method requires processing the screw itself, which reduces the strength of the screw itself and increases cost. There are drawbacks such as the unavoidable cost, and method 2 heats the resin, which is unsuitable in terms of improving adhesion compared to the method of heating the metal side due to differences in heat conduction and heat capacity. Although this method is efficient, it is difficult to say that it is advantageous in terms of adhesion and workability, so at present, other methods are being used, particularly a method in which a heated screw is coated with powdered resin and fused and fixed.
In this method, the screw conveyance method is as follows:
As seen in Japanese Patent Laid-open No. 154510, there is a method of transporting by hanging by two parallel belt-shaped belts using the head of a screw, and a method of carrying with a magnet as shown in Japanese Patent Application Laid-open No. 57-73215. Or Tokukosho
As an improvement method of No. 52-18342, a disk-shaped conveying device for holding each screw one by one is known as disclosed in Japanese Patent Publication No. 53-39542.
「発明が解決しようとする問題点」
本発明は、特開昭57−73215号で提案した磁石
方式の搬送装置が有する問題点を解消しようとす
るものである。"Problems to be Solved by the Invention" The present invention attempts to solve the problems of the magnetic conveyance device proposed in Japanese Patent Application Laid-Open No. 73215/1983.
磁石方式は前記ベルト方式や円盤式などと違
い、ねじの頭部の有無に関わらず、また広範囲の
形状のねじに、特別の機械を付加することなく使
用可能であること、ねじの着脱に格別の機構を必
要としないという長所を有するが次の様な問題点
をも有するものであつた。 Unlike the belt method or disc method, the magnet method can be used with or without a screw head, and with a wide range of screw shapes without the need for special machinery, and is exceptionally easy to attach and remove screws. Although it has the advantage of not requiring any mechanism, it also has the following problems.
ねじ自体を加熱するため熱伝導により磁石の
温度上昇が避けられない。特に高周波誘導で加
熱する時は電磁誘導により磁石の温度はさらに上
昇が激しい。 Since the screw itself is heated, the temperature of the magnet inevitably increases due to heat conduction. In particular, when heating with high-frequency induction, the temperature of the magnet increases even more rapidly due to electromagnetic induction.
磁石は、温度の上昇により性能が低下し、さら
には長時間の加熱条件下において磁力が低下した
り、割れやすい等の欠点が表われてくる。ねじ
をプライマー処理したと、磁石と接触する部分に
おいて、プライマーの樹脂成分が磁石表面に付着
し、ねじを汚す。更に連続生産が長期に亘る場
合、熱や物理的力により磁石が変形したり磁力の
低下が起り、生産を中止しなければならない状態
になつたり、品質に欠陥を生ずる。磁石は重量
が重いため、ベルトに磁石を固定し搬送する方式
では、ベルトの機械的強度を高くする為の方策等
により重くなりベルトが振動しやすく、安定品質
のねじを得ることが困難であり、熱効率も低下す
る。またベルト方式では、ベルトの加熱によつ
て、ベルトが熱膨張することによる品質のバラツ
キがさけられない。 The performance of magnets decreases as the temperature rises, and furthermore, magnets exhibit drawbacks such as a decrease in magnetic force and susceptibility to cracking under long-term heating conditions. When a screw is treated with a primer, the resin component of the primer adheres to the surface of the magnet where it comes into contact with the magnet, staining the screw. Furthermore, when continuous production continues for a long period of time, heat and physical forces can deform the magnet or cause a decrease in magnetic force, resulting in a situation where production has to be stopped or quality defects occur. Magnets are heavy, so if the magnet is fixed to a belt and conveyed, measures are taken to increase the mechanical strength of the belt, which increases the weight and causes the belt to easily vibrate, making it difficult to obtain screws of stable quality. , thermal efficiency also decreases. Further, in the belt method, variations in quality due to thermal expansion of the belt due to heating of the belt cannot be avoided.
本発明はこれらの問題点を解消した磁石方式に
よるねじ搬送装置を使用した、さらに好ましくは
高周波誘導加熱方式を併用したゆるみ止めねじの
製造方法を提案するものである。 The present invention proposes a method for manufacturing a locking screw using a screw conveying device using a magnetic method, and preferably using a high-frequency induction heating method, which solves these problems.
発明の構成
「問題点を解決する為の手段」
本発明者等は、前記問題点を解消するゆるみ止
めねじの製造に用いられる磁力方式のねじ搬送装
置について種々検討して、円盤上に円形状に磁力
を配置するか、環状の磁石を配置し、該磁石でね
じを保持する際に非磁性体を介して保持すること
によつて上記目的が達成されることを見出して本
発明を完成した。Structure of the Invention ``Means for Solving the Problems'' The inventors of the present invention have conducted various studies on magnetic screw conveying devices used in the manufacture of locking screws that solve the above-mentioned problems. The present invention was completed by discovering that the above object can be achieved by placing a magnetic force on the screw or by placing a ring-shaped magnet and holding the screw with the magnet through a non-magnetic material. .
すなわち本発明は、円形状に配置された複数の
磁石もしくは環状の磁石の磁力によりねじを非磁
性体を介して保持することを特徴とする円盤状の
ねじ搬送装置を使用してねじを保持し搬送しゆる
み止め加工を行なうゆるみ止めねじの製造方法に
関するものである。 That is, the present invention holds a screw using a disk-shaped screw conveying device that holds the screw through a non-magnetic material by the magnetic force of a plurality of circularly arranged magnets or an annular magnet. This invention relates to a method of manufacturing a locking screw that is transported and subjected to locking processing.
本発明方法において用いられる材料等について
まず説明する。 First, materials used in the method of the present invention will be explained.
Γ非磁性体
本発明の非磁性体に使用される非磁性材料と
しては各種プラスチツク材料が好ましく、具体
的には弗素樹脂、ナイロン、ポリエステル、ポ
リカーボネート、ポリフエニレンオキサイド、
ポリサルフオン、ポリエーテルサルフオン、ポ
リイミド、ポリアミドイミド、ポイアセター
ル、エポキシ樹脂等のテンジニアリングプラス
チツクスを挙げることができる。また金属材料
も使用でき、例えばアルミニウム、アルミニウ
ム合金、ステンレス鋼、真鍮等の使用が可能で
ある。なおこれらを組み合わせることもでき、
磁石のねじを保持する面に設けられる非磁性体
の厚みとしては0.1〜10ｍ／ｍが好ましく、よ
り好ましくは0.2〜５ｍ／ｍである。Γ Non-magnetic material As the non-magnetic material used for the non-magnetic material of the present invention, various plastic materials are preferable, and specifically, fluororesin, nylon, polyester, polycarbonate, polyphenylene oxide,
Examples include engineering plastics such as polysulfone, polyethersulfone, polyimide, polyamideimide, polyacetal, and epoxy resin. Metal materials can also be used, such as aluminum, aluminum alloy, stainless steel, brass, etc. It is also possible to combine these,
The thickness of the non-magnetic material provided on the screw-holding surface of the magnet is preferably 0.1 to 10 m/m, more preferably 0.2 to 5 m/m.
Γ磁石
磁石としてはAl−Ni−Co系鋳造磁石、粉末
治金法によるフエライト磁石、希土類磁石、お
よび圧延磁石等が本発明で使用可能である。こ
れらの磁石は磁束密度、保磁力および温度係数
がそれぞれ異なるので、保持すべきねじの大き
さ、重量、保持面積に応じて最適なものを選択
すると共に最適形状に設計することが必要とな
る。例えば５ｍ／ｍ厚の希土類磁石を用いたと
きは、M20程度のボルトの保持が可能である。Γ Magnet As the magnet, Al-Ni-Co cast magnets, powder metallurgy ferrite magnets, rare earth magnets, rolled magnets, and the like can be used in the present invention. Since these magnets have different magnetic flux densities, coercive forces, and temperature coefficients, it is necessary to select the optimum one and to design the optimum shape according to the size, weight, and holding area of the screw to be held. For example, when a rare earth magnet with a thickness of 5 m/m is used, it is possible to hold a bolt of about M20.
Γねじ
本発明方法に適用できるねじとしては各種の
ねじ及びボルトがあり、具体的には通常の六角
ボルト、四角ボルト、六角穴付ボルト、すりわ
り付ねじ、十字穴付ねじ、止めじ、調整ねじ等
である。Γ Thread There are various types of screws and bolts that can be applied to the method of the present invention, specifically ordinary hexagon bolts, square bolts, hexagon socket head bolts, slotted screws, cross recessed screws, stop screws, and adjustment screws. Such as screws.
また、その大きさとしては、呼び径M30以下
が好ましく適用され、より好ましくはM20以下
である。 Further, as for its size, a nominal diameter of M30 or less is preferably applied, and more preferably a nominal diameter of M20 or less.
Γ樹脂
ゆるみ止めねじの製造に使用される樹脂とし
ては11ナイロン、12ナイロン、６−10ナイロ
ン、６−12ナイロン、各種共重合ナイロン及び
ダイマー酸ベースのポリアミド樹脂のごときポ
リアミド樹脂、ポリビニリデンフルオライド、
ポリトリフルオロエチレン、テトラフルオロエ
チレン樹脂のごとき弗素樹脂、ポリエチレンテ
レフタレート、ポリブチレンテレフタレート樹
脂および各種共重合ポリエステル樹脂のごとき
ポリエステル樹脂、ポリイミド、ポリアリレー
ト、ポリエーテルケトン等の熱可塑性樹脂が挙
げられる。これらの樹脂に充填剤、潤滑剤、可
塑剤、着色顔料、酸化防止剤、安定剤等の配合
や、エポキシ樹脂、フエノール樹脂を小量配合
することも可能である。これらの樹脂は冷凍粉
粋、溶剤粉砕あるいは重合過程において粉末化
することができ、本発明においては粉末状の樹
脂として用いることが好ましい。粉末の粒径は
ねじのサイズ等によつて変更するが300μ以下
が好ましい。粉体特性を改良する目的でステア
リン酸マグネシウム、微粉状シリカをこれら樹
脂に適宜配合して使用することも可能である。Γ Resin Resins used to manufacture locking screws include 11 nylon, 12 nylon, 6-10 nylon, 6-12 nylon, various copolymerized nylons, polyamide resins such as dimer acid-based polyamide resins, and polyvinylidene fluoride. ,
Examples include fluororesins such as polytrifluoroethylene and tetrafluoroethylene resins, polyester resins such as polyethylene terephthalate, polybutylene terephthalate resins, and various copolymerized polyester resins, and thermoplastic resins such as polyimides, polyarylates, and polyetherketones. It is also possible to blend fillers, lubricants, plasticizers, coloring pigments, antioxidants, stabilizers, etc. into these resins, or to blend small amounts of epoxy resins and phenolic resins. These resins can be pulverized by freezing powder, solvent pulverization, or polymerization process, and in the present invention, it is preferable to use them as powdered resins. The particle size of the powder varies depending on the size of the screw, etc., but is preferably 300μ or less. For the purpose of improving powder properties, magnesium stearate and finely powdered silica may be appropriately blended with these resins.
Γプライマー
本発明においてねじ表面と樹脂の密着性を改
善する目的でねじ表面にエポキシ樹脂、フエノ
ール樹脂、ポリウレタン樹脂等を主成分とする
プライマーを塗布することもできる。Γ Primer In the present invention, a primer containing epoxy resin, phenol resin, polyurethane resin, etc. as a main component can also be applied to the screw surface for the purpose of improving the adhesion between the screw surface and the resin.
Γ樹脂の付着部位
ゆるみ止めねじには樹脂が通常ねじ先端から
１〜５山を除いた部分からねじの直径に相当す
る軸方向の長さに施工される。この長さは使用
する目的やねじのサイズ形状によつて異なり、
それぞれの目的に応じて変化させることが必要
である。ねじのゆるみどめの目的に対しては一
方向のみの樹脂の付着で充分であるが、シーリ
ングを要求される目的に対しては２〜４方向か
ら付着されることも出来る。Part where Γ resin is attached Resin is usually applied to locking screws over a length in the axial direction corresponding to the diameter of the screw, starting from the tip of the screw excluding 1 to 5 ridges. This length varies depending on the purpose of use and the size and shape of the screw.
It is necessary to change it according to each purpose. For the purpose of preventing screws from loosening, it is sufficient to apply the resin in only one direction, but for purposes requiring sealing, the resin can be applied from two to four directions.
Γ加熱装置
ねじを加熱させる方法としては赤外、遠赤
外、バーナー加熱などの一般的な加熱方式もと
り得る、磁力による搬送装置を用いたゆるみ止
めねじの製造方法においては下記の理由によ
り、高周波誘導加熱方式が好ましいものであ
る。Γ heating device General heating methods such as infrared, far infrared, and burner heating can be used to heat the screws. An induction heating method is preferred.
その第１は、樹脂が融着固定される部分はね
じの表面の一部であるにすぎないのに、他の方
法ではねじ全体を加熱することになる。全体加
熱することによる熱のロスはきわめて大きく、
更に磁石の部分迄加熱され、そのことによる熱
のロスは非常に大きいものである。そのロスを
高周波誘導加熱にすることにより小さいのとす
ることができる。 The first is that the part to which the resin is fused and fixed is only a part of the surface of the screw, whereas other methods require heating the entire screw. The heat loss caused by heating the entire body is extremely large.
Furthermore, even the magnet part is heated, resulting in a very large heat loss. This loss can be reduced by using high frequency induction heating.
その２は設備がコンパクトに設計・製作でき
るメリツトである。 The second advantage is that the equipment can be designed and manufactured compactly.
その３は、温度の設定が容易で例えばねじの
サイズの切替え時や運転開始時においてきわめ
て短時間に温度設定が出来、昇温も早いという
点である。 Thirdly, the temperature can be easily set, and the temperature can be set in a very short time, for example, when changing the screw size or at the start of operation, and the temperature can be raised quickly.
Γ円盤
複数の磁石を円形状に配置するまたは環状の
磁石を配置する円盤の材質としては金属・プラ
スチツクス等が使用できるが、好ましくは熱伝
導性の良い金属を用い、発生した熱をすみやか
に除去できるものを選択することが好ましい。Γ disc A disc in which multiple magnets are arranged in a circular shape or a ring-shaped magnet is arranged can be made of metal, plastic, etc., but it is preferable to use a metal with good thermal conductivity so that the generated heat can be quickly dissipated. It is preferable to select one that can be removed.
以上本発明方法において用いられる材料等につ
いて説明した、次に本発明方法の特徴である円盤
状のねじ搬送装置の構造および該装置を用いたゆ
るみ止めねじの製造方法について説明する。 The materials used in the method of the present invention have been described above.Next, the structure of the disc-shaped screw conveying device, which is a feature of the method of the present invention, and the method of manufacturing a locking screw using the device will be described.
Γねじ搬送装置
第１図は円盤状の搬送装置の破断説明図であ
り、第２図はＡ−A′における断面図である。Γ Screw Conveyance Device FIG. 1 is a cutaway explanatory view of the disc-shaped conveyance device, and FIG. 2 is a sectional view taken along line A-A'.
本発明の搬送装置は円盤２に複数の磁石１が
円形状に配置されるか、環状の磁石が配置さ
れ、その上（ねじを磁力により保持する側）に
非磁性材料からなる非磁性体３が設けられてい
る。非磁性体の表面は均一にするとが望まし
く、そうすることにより、ねじを磁力により平
行に保持することが出来るようになる。磁石の
配置方法の例を第４図に示した。立方体の磁石
の場合円盤の円周方向にそつてイのように全周
に亘り配置する。円柱状の磁石の場合ロの方法
であり、全体に亘り接触させ均一な磁力線を得
るためにはハの方法が採用できる。ニは環状の
磁石を使用した場合の図である。磁石同志は接
触していても離れていてもかまわいないが全面
にわたり安定した力を得るためには磁石同志を
近づけた方が良い。また、磁力線の方向を同じ
にするためＮ極あるいはＳ極を同じ方向にする
ことが望まいしい。 In the conveying device of the present invention, a plurality of magnets 1 are arranged in a circular shape or an annular magnet is arranged on a disk 2, and a non-magnetic body 3 made of a non-magnetic material is placed above it (on the side where the screw is held by magnetic force). is provided. It is desirable that the surface of the non-magnetic material be uniform, so that the screws can be held parallel by magnetic force. An example of how to arrange the magnets is shown in FIG. In the case of cubic magnets, they are placed along the circumferential direction of the disk, all around the circumference as shown in A. In the case of a cylindrical magnet, method (b) is used, and method (c) can be adopted to bring the magnet into contact with the entire magnet to obtain uniform lines of magnetic force. D is a diagram when a ring-shaped magnet is used. It doesn't matter if the magnets are in contact or apart, but in order to obtain a stable force over the entire surface, it is better to bring the magnets closer together. Further, in order to make the directions of the lines of magnetic force the same, it is desirable that the north pole or the south pole be in the same direction.
Γゆるみ止めねじの製造方法
第３図は本発明に係わる円盤状の搬送装置を
用いるゆるみ止めねじの製造方法を示す概念図
である。ねじはパーツフイーダー５の先端部か
ら搬送装置４の前面に供給される。搬送装置に
供給されたねじ６は搬送装置内に設けてある磁
石によつて保持され、矢印の方向に電動機等に
より回転する搬送装置により一定速度で搬送さ
れ、高周波誘導コイル７を通過することにより
樹脂粉末の融点以上の温度に加熱される。続い
て粉末供給ノズル８から供給された粉末樹脂が
ねじ螺子部の一部上に付着溶融固定されたのち
冷却され回収設備１０が加工されたゆるみ止め
ねじが回収される。搬送装置は電動機等によつ
て駆動され回転しているので連続的に生産でき
る。高周波誘導設備はねじの大きさ、速度によ
つて必要とされる容量が異るが呼び径M6のボ
ルトで100〜200個／分の速度を確保するために
は400KHzで２−5KWで充分である。ねじの加
熱温度は用いる樹脂の融点以上であつて通常
100℃以上である。加熱する部分は樹脂を融点
付着させる部分のみで良い。Method for manufacturing a Γ locking screw FIG. 3 is a conceptual diagram showing a method for manufacturing a locking screw using a disc-shaped conveying device according to the present invention. The screws are fed from the tip of the parts feeder 5 to the front surface of the conveying device 4. The screws 6 supplied to the conveying device are held by magnets provided in the conveying device, and are conveyed at a constant speed by the conveying device rotated by an electric motor or the like in the direction of the arrow, and are then passed through the high-frequency induction coil 7. It is heated to a temperature above the melting point of the resin powder. Subsequently, the powdered resin supplied from the powder supply nozzle 8 adheres to and melts and fixes a portion of the threaded portion, and then is cooled and the processed locking screw is recovered by the recovery equipment 10. Since the conveyance device is driven and rotated by an electric motor or the like, continuous production is possible. The capacity required for high-frequency induction equipment varies depending on the size and speed of the screw, but 2-5KW at 400KHz is sufficient to secure a speed of 100 to 200 bolts/minute with a nominal diameter of M6. be. The heating temperature of the screw is usually above the melting point of the resin used.
The temperature is 100℃ or higher. The only part to be heated is the part where the resin is attached to the melting point.
本発明は前記本発明の構成要件の組み合せによ
り、達成でき、個々の作用の相乗的効果に起因し
てすぐれた効果を生ぜしめるものと考えられる。
The present invention can be achieved by combining the constituent elements of the present invention, and it is believed that excellent effects are produced due to the synergistic effect of the individual actions.
円盤状の作用；ねじが均一な位置に配置され、固
定された高周波誘導コイル等による加熱位置が
一定となり、樹脂の供給位置も一定となるため
得られる製品の品質が均一となる。高周波誘導
コイル等との位置も一定に保たれる為過熱され
ることもない。Disk-like action: Screws are placed in uniform positions, the heating position by a fixed high-frequency induction coil, etc. is constant, and the resin supply position is also constant, so the quality of the product obtained is uniform. Since the position with the high frequency induction coil etc. is kept constant, there is no possibility of overheating.
非磁性体を介してねじを保持する作用；高周波誘
導コイル等と磁石との距離が大きくなり加熱が
阻害され磁石の耐久性が向上し、磁石の破損防
止、プライマーによる汚れの防止および面の凹
凸がなくねじの搬送が均一にでき高速生産がで
きる。又高周波誘導加熱等における熱効率が向
上する。The effect of holding the screw through a non-magnetic material; the distance between the high-frequency induction coil, etc. and the magnet increases, inhibiting heating, improving the durability of the magnet, preventing damage to the magnet, preventing staining with primer, and uneven surfaces. The screws can be conveyed uniformly without any problems, allowing for high-speed production. Furthermore, thermal efficiency in high-frequency induction heating and the like is improved.
本発明において高周波誘導加熱設備を採用する
際の利点については前述した。 The advantages of employing high frequency induction heating equipment in the present invention have been described above.
さらに粉末状樹脂を本発明に用いることによ
り、ねじのサイズ、形状の変化に対応しやすく、
ゆるみ止めねじの品質を安定することができる。 Furthermore, by using powdered resin in the present invention, it is easy to respond to changes in screw size and shape.
The quality of locking screws can be stabilized.
第３図に示した設備において亜鉛メツキクロメ
ート処理した鋼製ボルトM6×15L（エポキシ系プ
ライマーＳ−10（東亞合成化学製）処理品）を連
続的にパーツフイーダーから円盤上に供給した。
真鍮製の円盤の直径は800ｍ／ｍであり円形に設
置された磁石表面に厚さ２ｍ／ｍｔのテフロンを
設置した。円盤の回転速度は円周端において３
ｍ／分に設定した。高周波誘導加熱設備は400K
Hz、5KWの能力を有し、そのコイルは鋼製で円
周方向の長さを70ｍ／ｍとした。円盤上に頭部を
保持されたボルト170個／分の速度で高周波電圧
6KV、電流0.5Aに設定されたコイルを通過し定
量供給設備からナイロン11粉末が連続的に巾５
ｍ／ｍのノズルから15ｇ／分の速度で落下するゾ
ーンを通過させた。過剰のナイロン粉末は回収設
備から回収した。ボルト螺子部に供給されたナイ
ロン11粉末は加熱されたボルトの熱により直ぐに
溶融し、ボルトの軸方向の先端から２−３山を除
き軸方向に長さ６〜８ｍ／ｍの固定された。引き
続き空気のゆるやかな流れのゾーンを通過させ、
冷却したのち、ナイロン11が施されたゆるみ止め
ボルトを回収した。８時間の連続試験で約８万本
のよるみ止めボルトを得た。この間磁石の温度上
昇はわずかであり、安定に稼動することが出来
た。この中から30本のボルトを抜きとりナイロン
の付着量を測定すると平均0.017ｇ上であつた。
In the equipment shown in FIG. 3, steel bolts M6 x 15L (treated with epoxy primer S-10 (manufactured by Toagosei Kagaku)) treated with zinc plating and chromate were continuously fed onto the disk from a parts feeder.
The diameter of the brass disk was 800 m/m, and a Teflon layer with a thickness of 2 m/m was placed on the surface of the circular magnet. The rotational speed of the disk is 3 at the circumferential edge.
m/min. High frequency induction heating equipment is 400K
It has a capacity of Hz and 5KW, and its coil is made of steel and has a circumferential length of 70m/m. High frequency voltage at a rate of 170 bolts/min with the head held on a disc
Nylon 11 powder is continuously passed through a coil set at 6KV and a current of 0.5A to a width of 5cm from a metered supply equipment.
It passed through a falling zone at a rate of 15 g/min from a m/m nozzle. Excess nylon powder was collected from a collection facility. The nylon 11 powder supplied to the bolt thread was immediately melted by the heat of the heated bolt, and was fixed in an axial length of 6 to 8 m/m except for 2 to 3 threads from the axial tip of the bolt. Continue to pass through a zone of gentle air flow,
After cooling, the locking bolts coated with nylon 11 were recovered. Approximately 80,000 anti-sagging bolts were obtained in 8 hours of continuous testing. During this period, the temperature of the magnet increased only slightly, and stable operation was possible. When 30 bolts were extracted from the bolts and the amount of nylon attached was measured, the average amount was 0.017 g.
次に得られたボルトについて、米国工業用フア
スナー協会規格IFI−124に準じてプリベイリング
トリク強度を測定すると次の結果となつた。 Next, the pre-bailing trick strength of the obtained bolt was measured according to the American Industrial Fasteners Association standard IFI-124, and the following results were obtained.
プリベイリングトルク最大 25Kgｆ−cm
１回目取り外しブリベイクリングトルク最小
6.5 〃
５回目 〃 〃
4.0 〃
この結果から、この方法によつて得られたゆる
み止めボルトは繰り返し使用に耐え、安定に連続
生産が出来ることを示している。Maximum pre-bailing torque 25Kgf-cm Minimum pre-bailing torque for first removal
6.5 〃 5th time 〃 〃
4.0 〃 This result shows that the locking bolt obtained by this method can withstand repeated use and can be stably produced continuously.
「発明の効果」
本発明によればシンプルな設備で、各種サイ
ズ、形状のゆるみ止めねじが製造でき、連続生産
性に優れた生産性の高い方法を提供でき、加熱に
伴なう熱効率の向上が可能となり省資源、省エネ
ルギーに寄与できる。"Effects of the Invention" According to the present invention, locking screws of various sizes and shapes can be manufactured using simple equipment, and a highly productive method with excellent continuous productivity can be provided, and thermal efficiency associated with heating can be improved. This makes it possible to contribute to resource and energy conservation.
更に、磁石の温度上昇による破損を妨ぎ、長時
間に亘つて耐久性が確保できると共にプライマー
付着防止、磁石の変形を防ぐ、さらには製造ライ
ンにおけるねじ保持時の転倒等の種々のトラブル
を防止する等のメリツトが生ずる。 Furthermore, it prevents the magnet from being damaged due to temperature rise, ensuring long-term durability, preventing primer adhesion, preventing magnet deformation, and preventing various troubles such as falling when holding screws on the production line. Benefits such as:
本発明方法により得られたゆるみ止めねじの性
能は高く、バラツキが小さい為、広く組み立て産
業界に寄与できる。 Since the locking screw obtained by the method of the present invention has high performance and small variation, it can widely contribute to the assembly industry.
第１図は円盤状の搬送装置の破断説明図であ
る。第２図は第１図Ａ−A′断面図を示す。第３
図は円盤状の搬送装置を用いるゆるみ止めねじの
製造方法を示す概念図である。第４図は円盤上に
配置する磁石の配列方法を示す図である。
１……磁石、２……円盤、３……非磁性体、４
……円盤状搬送装置、５……パーツフイーダー、
６……ねじ、７……高周波誘導コイル、８……樹
脂供給ノズル、９……樹脂回収設備、１０……ね
じ回収設備。
FIG. 1 is a cutaway explanatory view of a disk-shaped conveyance device. FIG. 2 shows a sectional view taken along line A-A' in FIG. Third
The figure is a conceptual diagram showing a method of manufacturing a locking screw using a disk-shaped conveying device. FIG. 4 is a diagram showing a method of arranging magnets arranged on a disk. 1...Magnet, 2...Disc, 3...Nonmagnetic material, 4
...Disc-shaped conveyance device, 5...Parts feeder,
6...screw, 7...high frequency induction coil, 8...resin supply nozzle, 9...resin recovery equipment, 10...screw recovery equipment.
Claims (1)
の磁石の磁力によりねじを非磁性体を介して保持
することを特徴とする円盤状のねじ搬送装置を使
用してねじを保持し搬送しゆるみ止め加工を行な
うゆるみ止めねじの製造方法。1. Holds and transports screws to prevent them from loosening using a disc-shaped screw transport device that holds screws through a non-magnetic material by the magnetic force of a plurality of circularly arranged magnets or annular magnets. A manufacturing method for locking screws that involves processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18884084A JPS6168170A (en) | 1984-09-11 | 1984-09-11 | Manufacture of locking screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18884084A JPS6168170A (en) | 1984-09-11 | 1984-09-11 | Manufacture of locking screw |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6168170A JPS6168170A (en) | 1986-04-08 |
| JPH0356111B2 true JPH0356111B2 (en) | 1991-08-27 |
Family
ID=16230758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18884084A Granted JPS6168170A (en) | 1984-09-11 | 1984-09-11 | Manufacture of locking screw |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168170A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011072912A (en) * | 2009-09-30 | 2011-04-14 | Nitto Seiko Co Ltd | Component inspection apparatus |
| KR102548322B1 (en) * | 2019-02-28 | 2023-06-28 | 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 | tabernacle equipment |
-
1984
- 1984-09-11 JP JP18884084A patent/JPS6168170A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6168170A (en) | 1986-04-08 |
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