JPS61235446A - 産業ロボツト用外被管 - Google Patents

産業ロボツト用外被管

Info

Publication number
JPS61235446A
JPS61235446A JP7719985A JP7719985A JPS61235446A JP S61235446 A JPS61235446 A JP S61235446A JP 7719985 A JP7719985 A JP 7719985A JP 7719985 A JP7719985 A JP 7719985A JP S61235446 A JPS61235446 A JP S61235446A
Authority
JP
Japan
Prior art keywords
weight
propylene
ethylene
industrial robot
jacket tube
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
Application number
JP7719985A
Other languages
English (en)
Other versions
JPH0129503B2 (ja
Inventor
Shuichi Yamakami
山神 修一
Hideo Okawa
秀夫 大川
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Calp Kogyo KK
Original Assignee
Calp Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Calp Kogyo KK filed Critical Calp Kogyo KK
Priority to JP7719985A priority Critical patent/JPS61235446A/ja
Publication of JPS61235446A publication Critical patent/JPS61235446A/ja
Publication of JPH0129503B2 publication Critical patent/JPH0129503B2/ja
Granted legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25JMANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
    • B25J19/00Accessories fitted to manipulators, e.g. for monitoring, for viewing; Safety devices combined with or specially adapted for use in connection with manipulators
    • B25J19/0075Means for protecting the manipulator from its environment or vice versa
    • B25J19/0083Means for protecting the manipulator from its environment or vice versa using gaiters

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。

Description

【発明の詳細な説明】 [産業上の利用分野] この発明は、産業ロボット用外被管に関し、さらに詳し
く言うと、産業用ロボットにおける関節等の屈曲1回動
部あるいはアーム部等を被覆し。
前記関節部内の配線9機械部品等を保護し、またアーム
部の屈曲回動動作による人身事故の防止を有効に防止す
ることのできる産業ロボット用外被管に関する。
[従来の技術およびその問題点] 近年、産業界に進出する産業用ロボットには、その進歩
、進出に伴い種々の問題点が生ずる。
たとえば、産業ロボットのある種のものは、高熱雰囲気
下で作業する。その場合、産業ロボットは高熱あるいは
高温から保護されねばならない。
この産業用ロボットの故障部分は、先ず第一に、アーム
関節?A$の回動部、屈曲部である。この回動部、屈曲
部の間隙から塵埃、木等が関節部内に侵入して関節部内
の錆の発生、ケーブルの破損等が生じるのであるからア
ームの関節部もまた有効に保護されねばならない。
アーム部は、通常、金属製の保護部材でおおわれている
のであるが、アームの回動半径内で作業する人員にこの
アームが衝突したりする人身事故の危険もある。
この発明は前記事情に基づいてなされたものである。
すなわち、この発明の目的は、高度の難燃性、耐熱性を
有することにより産業ロボットを高熱あるいは高温から
保護し、また、引っ張り強さ、引っ張り伸び等の機械的
特性に優れることにより、複雑な形状の産業ロボットの
外表面、あるいはアーム部の関節部を被覆して産業ロボ
ット内部の保護を図ると共に周辺の作業員の保護をも図
るのに好適な産業ロボット用外被管を提供することにあ
る。
前記目的を達成するために、この発明者が鋭意研究した
ところ、プロピレンホモ重合体とエチレン−プロピレン
ランダム共重合体との混合物またはプロピレンホモ重合
体に、特定の配合割合でDPTBSと三酸化アンチモン
とを少なくとも配合してなるポリプロピレン組成物を用
いて蛇腹状に成形して得た管体は、前記目的を達成する
ことができることを見出しこの発明に到達した。
[前記問題点を解決するための手段] 前記目的を達成するためのこの発明の概要は、プロピレ
ンホモ重合体50〜951J1%とエチレン−プロピレ
ンランダム共重合体5〜50重量%とからなるポリプロ
ピレン混合物60〜97重量%またはプロピレンホモ重
合体60〜97f重量%と、テトラブロモビスフェノー
ルSのビス(2゜3−ジブロモプロピル)エーテル2〜
30重量%と、三酸化アンチモン1〜101N%と、さ
らに要すればムーニー粘度が30以上であるエチレン−
プロピレン共重合体ゴム3〜20重量%とを少なくとも
有する樹脂組成物で蛇腹状に成形してなることを特徴と
する、難燃性および耐熱性が大きくて、しかも引っ優り
強度および引っ張り伸び等の機械的特性に優れた産業ロ
ボット用外被管である。
前記プロピレンホモ重合体としては、実質的にアイソタ
クチック構造を有して結晶性のポリプロピレンホモ重合
体が好適である。
前記エチレン−プロピレンランダム共重合体としては、
エチレンを0.3〜8重量%含有する結晶性重合体が好
ましい。
前記DPTBSおよび三酸化アンチモンは難燃剤として
配合するものであるが、この難燃剤の代りに他の難燃剤
を使用しても、大きな難燃性、耐熱性、小さな熱伝導率
、大さな引っ張り強さ。
引っ張り伸びを有する成形品が得られないことは注目す
べきことである。
この発明では、ポリプロピレンホモ重合体50〜95重
量%とエチレン−プロピレンランダム共重合体5〜50
重量%とからなるポリプロピレン混合物60〜97重量
%またはプロピレンホモ重合体60〜97重量%、好ま
しくは70〜95重量%で、DPTBSを2〜30重量
部、好ましくは2.5〜20重量%で、および三酸化ア
ンチモンを1−1−1O量%、好ましくは0.5〜71
f重量%で配合することがff1ffである。
前記プロピレンホモ重合体とエチレン−プロピレンラン
ダム共重合体とのポリプロピレン混合物またはプロピレ
ンホモ重合体の配合量が前記60重量%よりも少ないと
樹脂組成物の成形加工性が不良となり、また配合量が9
7重量%よりも多いと難燃性、耐熱性が低下することと
なる。
また、前記DPTBSの配合量が2玉量%よりも少ない
と、この樹脂組成物による産業ロボット用外被管の難燃
性が低下し、30重量%よりも多いとブリードアウトが
生じ、また難燃性については配合量に比例した効果が得
られない。
前記三酸化アンチモンの配合ばか1重暑%よりも少ない
と前記DPTBSと共に配合する相剰効果がなく、10
重量%よりも多いと、この樹脂組成物の密度および製品
コストが上がる。
さらに、管体の衝撃強度、およびブリードアウトを改善
するときには、前記樹脂組成物は、前記各成分の外にム
ーニー粘度が30以上であるエチレン−プロピレン共重
合体ゴムを配合するのが良く、その場合の各成文の配合
組成としては、プロピレンホモ重合体50〜95i11
量%とエチレン−プロピレンランダム共重合体5〜50
重量量%とからなるポリプロピレン混合物またはプロピ
レンホモ重合体60〜86.5重量量%、好ましくは7
0〜85重量%、ムーニー粘度が30以上であるエチレ
ン−プロピレン共重合体ゴム3〜20重量%、好ましく
は5〜15重量%、DPTBSを8.5〜15i1量%
、好ましくは9〜12重量%で、および三酸化アンチモ
ンを2〜lO!1量%、好ましくは3〜7重量%である
のが良い。
このような配合組成としておくと、高度の難燃性、より
大きな引っ張り強さ、より高い衝撃強度を有すると共に
ブリードアウトの解消を図って、この産業ロボット用外
被管に被覆される金属部材の錆発生の防止を図ることが
できる。
このエチレン−プロピレン共重合体ゴムは、エチレンと
プロピレンとのランダム共重合体であって通常EPMと
称するエラストマーを好適に使用することができ、特に
好ましいのは、ムーニー粘度が30以上であるエチレン
−プロピレン共重合体ゴムである。このムーニー粘度が
30よりも小さいと、1&形品の表面にブリードアウト
が発生する。なお、このエチレン−プロピレン共重合体
ゴムのムーニー粘度が30以1である限り、樹脂組成物
の流動性を改善するために、ムーニー粘度が30よりも
小さいエチレン−プロピレン共重合体ゴムを混合しても
良い、この場合、ムーニー粘度が30よりも小さいエチ
レン−プロピレン共重合体ゴムと、ムーニー粘度が30
以上であるエチレン−プロピレン共重合体ゴムの配合比
は、重量比でl:9〜5:5が適当である。また、この
エチレン−プロピレン共重合体ゴムに関して重要なこと
は、その分子鎖中に第3成分を含んだ三元共重合体であ
ってはならないことである。ムーニー粘度がたとえ30
以上であったとしても、三元共重合体ゴムであるたとえ
ばEPDMの配合は、成形品の光沢度を低下させるから
である。
この発明における前記樹脂組成物、特にポリプロピレン
混合物またはプロピレンホモ重合体とDPTBSと三酸
化アンチモンとを前記特定の配合割合で配合してなる樹
脂組成物は、押出し加工性に優れていて、V−Oの難燃
性、耐熱性および小さな熱伝導率を達成すると共に実用
上差支えのない程度にブリードアウトを解消し、しかも
大きな引っ張り強さおよび引っ張り伸びを有する蛇腹状
の産業ロボット用外被管に成形可能な組成物となるので
あるが、前記組成にさらにエチレン−プロピレン共重合
体ゴムを配合してなる樹脂組成物は、衝撃強度の大きな
産業ロボット用外被管に好適に成形することができる。
特に注意すべきこととして、ポリプロピレン混合物にお
いて前記エチレン−プロピレンランダム共重合体の代り
にエチレン−プロピレンブロック共重合体を配合しても
この発明の目的を達成することができず、むしろ難燃性
が低下すると共にブリードアウトが激しくなることであ
る。
前記プロピレンホモ重合体とエチレン−プロピレンラン
ダム共重合体との配合割合は、プロピレンホモ重合体が
50〜95重量%、エチレン−プロピレンランダム共重
合体が5〜50重量%である。このエチレン−プロピレ
ンランダム共重合体の配合量が5fl重量%よりも少な
いと、特にこれを配合する効果がなく、5011!3%
よりも多いと配合量の増加に比例した効果が得られない
この発明における樹脂組成物は、前記各成分を配合する
ことにより得ることができる。
また、この発明における樹脂組成物は、十分な難燃性、
耐熱性、大きな引っ張り強さ、引っ張り伸び、衝撃強度
を阻害しない限り、他の添加剤たとえば2,6−ジーし
一ブチルーp−クレゾール等の酸化防止剤、フェニルサ
リシレート等の紫外線吸収剤、ポリオキシエチレンアル
キルアミン簿の帯電防止剤、ステアリン酸カルシウム等
の滑剤、離型剤等を適宜量で含んでいても良い。
この発明における前記樹脂組成物に関し、前記各成分の
配合の順序には制限がない。
また配合の方法としては、通常の樹脂組成物を製造する
際の通常の配合方法を採用することができ、たとえば、
ポリプロピレン成分(プロピレンホモ共重合体、ポリプ
ロピレン混合物)そノ他ノ各成分を予備混合しておき、
得られた予備混合物をさらに混練する方法、前記ポリプ
ロピレン成分に高配合量でDPTBSおよび三酸化アン
チモンを配合してマスタバッチ組成物を製造しておき、
このマスタバッチ組成物にポリプロピレン成分およびエ
チレン−プロピレン共重合体ゴムを配合して、この発明
で規定する配合割合になるまで前記マスタバッチ組成物
を希釈する方法等が挙げられる。
配合は、たとえば、リボンブレンダー、タンブルミキサ
ー、ヘンシェルミキサー、オープンロール、バンバリー
ミキサ−1単軸スクリュー押出し機、2輌スクリュー押
出し機、単軸往復動スクリュー混線機等により行なうこ
とができる。
このようにして得られる樹脂組成物は、押出成形法によ
り蛇腹状の管体に好適に成形することができる。
第1図に示すように、この蛇腹状の管体lで産業ロボッ
トのたとえばアーム2の関節部3を被覆すると、この管
体1は大きな難燃性、耐熱性を有しているので、この産
Xロボットを高温の場所に設nしても、管体l内は管体
1外のような高温に至らず、また関節部3内の導電線、
ケーブル等の被覆部材が容易に溶融したり発火したすせ
ず、しかも、この管体lはその素材である樹脂組成物自
体が大きな引っ張り強さ、引っ張り伸びを有することと
蛇腹状であることと相まって、この管体lは、アーム2
の回動、屈曲等の複雑な動きに追随し、しかも容易に破
損しない、さらに、この管体lは、前記アーム2の関節
部3、第2図に示すようにアーム2の本体部に装着して
おくと、作業者の指その他の身体部を前記関節部3の間
隙に挟む事故、回動するアーム2に衝突しても作業者が
大怪我をする等の事故を防止することができる。
したがって、この管体1は産業ロボット用外被管この発
明によると、少なくともプロピレンホモ重合体とエチレ
ン−プロピレンランダム共重合体との特定配合組成から
なるポリプロピレン混合物またはプロピレンホモ重合体
とDPTBSと三酸化アンチモンとを特定の配合割合で
配合した樹脂組成物は、高度の難燃性、耐熱性、大きな
引っ張り強さを有すると共に良好な押出し加工性を有す
るので、蛇腹状の管体に成形し、この管体を産業ロボッ
ト用外被管として、産業ロボットのアーム関節部、アー
ム本体、その他の各部に装着すると、内部に収納した導
電線、ケーブル等を外部の熱や火炎から保護することが
できると共にこれらの導電線、ケーブルその他の部品を
外部よりの衝撃から保護することができ、また、産業ロ
ボットの外表面を柔軟な蛇腹状の管体が被覆するので。
作業者に対する事故を防とすることができる、好適な産
業ロボット用外被管を提供することができる。また、前
記樹脂組成物中にエチレン−プロピレン共重合体ゴムを
配合すると、その樹脂組成物は、高度の難燃性、耐熱性
の外に耐衝撃性の向上およびブリードアウトの改善をも
図ることができるから、周辺の金属部品に対するブリー
ドアウトによる悪′#響を防止することができる産業ロ
ボット用外被管とすることができる。
[実施例] 次にこの発明の実施例および比較例を示してこの発明を
更に具体的に説明する。なお、この発明は、この実施例
に限定されないことは言うまでもない。
(実施例1−11、比較例1〜6) 第1表に示す配合組成にて、ナカタニ機械(株)製の5
0ミリ車軸押出し機により。
200〜230℃の加熱条件下で混線してベレットを得
た。このペレットを、東芝機械(株)製の6オンス射出
成形機により、200〜210℃の加熱条件下でテスト
ピースを作成した。このテストピースにつき、UL−9
4規格に従って難燃性を評価し、またASTM  D−
848に従って熱変形温度を策定してこれにより耐熱性
を評価し。
A S TMC−177°に従って熱伝導率を測定した
さらに、前記テストピースを用いてASTMD −83
8に従って引っ張り試験をして引っ張り強さおよび引っ
張り伸びを測定し、ASTMD−258に従ってアイゾ
ツト衝撃強度(ノツチ付き、ノー2チなし)を測定し、
下記の方法に従って耐屈曲疲労性を評価した。
すなわち、第3図に示すように、最大外径りが170m
m、最小外径dが140mm、管体の厚みtが0.3m
m、蛇腹の山部分の輻mが20mm、蛇腹の各部分の輻
Vが15mm、全長りが100m/mである管体を、第
4図に示すように、水平に広げたり、両端部を相対接合
して環状に曲げたりの繰り返しを行ない、第4図中の首
印で示す中央部の破壊情況憂、屈曲回数で評価した。
結果を第1表に示す。
なお、第1表におけるDPTBSは、次の構造を有し、
丸蓋油化(株)製の商品名「ノンネンPR−2Jである
また、比較例6では、DPTBSの代りに次の構造を有
し、奇人化成(株)製の商品名rFG3100」を使用
した。
(1大下、余白) 前記第1表に示すように、プロピレンホモ重合体および
エチレン−プロピレンランダム共重合体からなるポリプ
ロピレン混合物またはプロピレンホモ重合体と、FTB
Sと、三酸化アンチモンとを、この発明で規定する特定
の配合割合で配合して得た樹脂組成物は、大きな難燃性
、耐熱性、大きな引っ張り強さを有する成形品に成形す
ることができる。また、ムーニー粘度が30以上である
エチレン−プロピレン共重合体ゴムを有する樹脂組成物
は、耐衝撃性、およびブリードアウトの改善された成形
品とすることができる。
【図面の簡単な説明】
第1図は産業ロボットの関節部にこの産業ロボット用外
被管を装着した状態を示す断面図、第2図は産業ロボッ
トのアーム部にこの産業ロボット用外被管を装着した状
態を示す斜視図、第3図は耐屈曲疲労性の評価性なうと
きに用いた管体の寸法を示す側面図、および第4図は耐
屈曲疲労性を評価する方法を示す説明図である。 1−・轡管体、2・・・アーム、3Φ・・関節部、4・
拳・産業ロボット用外被管。

Claims (2)

    【特許請求の範囲】
  1. (1)プロピレンホモ重合体50〜95重量%とエチレ
    ン−プロピレンランダム共重合体5〜50重量%とから
    なるポリプロピレン混合物60〜97重量%またはプロ
    ピレンホモ重合体60〜97重量%と、テトラブロモビ
    スフェノールSのビス(2,3−ジブロモプロピル)エ
    ーテル2〜30重量%と、三酸化アンチモン1〜10重
    量%とを少なくとも有する樹脂組成物で蛇腹状に成形し
    てなることを特徴とする産業ロボット用外被管。
  2. (2)前記樹脂組成物は、ムーニー粘度が 30以上であるエチレン−プロピレン共重合体ゴム3〜
    20重量%を含む前記特許請求の範囲第1項に記載の産
    業ロボット用外被管。
JP7719985A 1985-04-11 1985-04-11 産業ロボツト用外被管 Granted JPS61235446A (ja)

Priority Applications (1)

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JP7719985A JPS61235446A (ja) 1985-04-11 1985-04-11 産業ロボツト用外被管

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Application Number Priority Date Filing Date Title
JP7719985A JPS61235446A (ja) 1985-04-11 1985-04-11 産業ロボツト用外被管

Publications (2)

Publication Number Publication Date
JPS61235446A true JPS61235446A (ja) 1986-10-20
JPH0129503B2 JPH0129503B2 (ja) 1989-06-12

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JPS63308048A (ja) * 1987-06-08 1988-12-15 Mitsubishi Petrochem Co Ltd 難燃性ポリオレフィン組成物
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CN104059290A (zh) * 2014-05-29 2014-09-24 安徽海纳川塑业科技有限公司 一种防渗漏外排式雨水管
CN105121102A (zh) * 2013-04-16 2015-12-02 杜尔艾科克林有限公司 用于处理工件的机组
CN105922242A (zh) * 2016-06-28 2016-09-07 江苏捷帝机器人股份有限公司 一种高效的智能化机械臂及其工作方法
WO2017030104A1 (ja) * 2015-08-19 2017-02-23 ライフロボティクス株式会社 回転関節部のカバー装置

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JPS57192443A (en) * 1981-04-27 1982-11-26 Teijin Chem Ltd Flame-retardant polypropylene composition
JPS5974141A (ja) * 1982-10-19 1984-04-26 Chisso Corp 難燃性樹脂組成物

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57192443A (en) * 1981-04-27 1982-11-26 Teijin Chem Ltd Flame-retardant polypropylene composition
JPS5974141A (ja) * 1982-10-19 1984-04-26 Chisso Corp 難燃性樹脂組成物

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63308048A (ja) * 1987-06-08 1988-12-15 Mitsubishi Petrochem Co Ltd 難燃性ポリオレフィン組成物
US5038488A (en) * 1988-10-04 1991-08-13 Carl-Zeiss-Stiftung Protective arrangement for a longitudinally extendible machine component
CN105121102A (zh) * 2013-04-16 2015-12-02 杜尔艾科克林有限公司 用于处理工件的机组
CN104059290A (zh) * 2014-05-29 2014-09-24 安徽海纳川塑业科技有限公司 一种防渗漏外排式雨水管
WO2017030104A1 (ja) * 2015-08-19 2017-02-23 ライフロボティクス株式会社 回転関節部のカバー装置
CN105922242A (zh) * 2016-06-28 2016-09-07 江苏捷帝机器人股份有限公司 一种高效的智能化机械臂及其工作方法

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