JP3935418B2 - Automatic tensile testing machine equipped with a constant temperature bath - Google Patents

Automatic tensile testing machine equipped with a constant temperature bath Download PDF

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JP3935418B2
JP3935418B2 JP2002320599A JP2002320599A JP3935418B2 JP 3935418 B2 JP3935418 B2 JP 3935418B2 JP 2002320599 A JP2002320599 A JP 2002320599A JP 2002320599 A JP2002320599 A JP 2002320599A JP 3935418 B2 JP3935418 B2 JP 3935418B2
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test piece
testing machine
automatic
thermostat
tensile testing
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JP2004156933A (en
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耕一 太田
好則 太田
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株式会社東洋精機製作所
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Description

【0001】
【発明の属する技術分野】
本発明は、各種試験片を引張試験する引張試験機に関し、詳しくは恒温槽を備えた自動引張試験機に関する。
【0002】
【従来の技術】
従来から、試験片を引張試験機に自動的に供給して引張試験をし、試験片の伸び又は破断を追跡測定する標線追跡装置を備えた自動引張試験機は公知である。また、高温下で試験片の引張試験をする恒温槽を備える自動引張試験機も公知である。
【0003】
【発明が解決しようとする課題】
一般的に引張試験機の試験片上下をつかむつかみ具の上下作動用のクロスヘッドは、正面から見て横並びに位置付けられている。また、この種引張試験機は壁際に設置されることが常であり、試験片の自動供給は試験機の横方向から行うことが多い。従って、試験片自動供給装置は試験機負荷機構部の左右何れかの横位置に設置される。
ところが、試験片つかみ具の左右位置はクロスヘッドを上下移動するための駆動ネジが横並びに配置されているから、この駆動ネジが障害となり、試験片つかみ具に対して、試験片を横方向移動だけで供給することができない。
従って、試験片の供給は、先ず試験片つかみ具に向って横方向移動し、試験片つかみ具の前後位置に供給し、その後試験片つかみ具に向って前後方向移動しなければならないという無駄な動作を必要としていたという課題があった。
【0004】
次に、この種引張試験機による試験片の引張り試験を恒温槽内にて、高温下で試験をする場合は、問題となることは少ないが、恒温槽内で0℃以下の低温下での試験には種々の問題がある。
その1つは、クロスヘッドの上下作動を司る駆動ネジとクロスヘッドの雌ネジが凍結し、クロスヘッドが動かなくなることである。これは空気中の水分が凍結の原因となるもので、これによりクロスヘッドと駆動ネジの凍結だけでなく、恒温槽内の試験片搬送装置、試験片つかみ具の凍結、標線追跡装置のための観測窓に曇りを生じるという課題がある。
本発明は、上記課題に鑑み、試験片つかみ具への試験片の供給動作を簡単にして無駄な動きをなくすと共に、低温下においても各部の凍結、曇り等をなくして円滑な引張り試験を行うことができる新規な自動引張試験機を提供するものである。
【0005】
【課題を解決するための手段】
そのために、本発明恒温槽を備えた自動引張試験機は、恒温槽内に引張試験機負荷機構部を備え、引張試験機負荷機構部に試験片を自動的に供給する自動引張試験機であって、試験片つかみ具を備えるクロスヘッドを駆動する一対の駆動ネジを正面からみて前後に位置をずらせて配置し、一対の駆動ネジ間に架設したクロスヘッドを平面からみて斜めに配置してある。即ち、試験片つかみ具の真横にクロスヘッド用の駆動ネジが配置されないから、試験片つかみ具に対して真横から試験片を供給でき、試験片つかみ具への試験片供給の動作を簡素化できる。
【0006】
また、本発明恒温槽を備えた自動引張試験機は、上記駆動ネジを中空ネジとしてベアリングに回転可能に支持し、該ベアリング内にヒーターを配置してある。即ち、駆動ネジ内にヒーターを配置して駆動ネジを過熱し、0℃以下の低温下においても駆動ネジ及びクロスヘッドの雌ねじを凍結することなく、0℃以下の低温下で円滑な動作が得られる。
さらに、上記ベアリング内に温度センサーを配置してある。即ち、温度センサーにより駆動ネジの温度を一定の温度になるよう自動制御ができ、槽内温度を変えても駆動ネジが凍結しないようにできる。
【0007】
また、本発明恒温槽を備えた自動引張試験機は、上記恒温槽内に乾燥空気を充満させてある。即ち、低温下において恒温槽内各部が凍結するのは、槽内の水分が凍結の原因となるから、槽内の水分を除去し、槽内各部が凍結しないようにできる。
さらに、上記恒温槽内に乾燥空気が充満している状態で、恒温槽内にさらに乾燥空気を供給し恒温槽から乾燥空気が少しずつ漏れるようにしてある。即ち、常に槽内から外に乾燥空気を漏らすことで、槽外の空気の槽内への侵入を阻止し、槽内の乾燥状態を維持できる。
【0008】
また、本発明恒温槽を備えた自動引張試験機は、引張試験機負荷機構部を備える恒温槽の横側に試験片自動供給装置を配置し、恒温槽の該試験片自動供給装置と対向する横壁の位置に開閉窓を設け、この開閉窓に乾燥空気のエアーカーテンを設けてある。即ち、試験片自動供給装置によって、恒温槽内の引張試験機負荷機構部内に試験片を自動供給するため、恒温槽の横壁に開閉窓を設けてあり、この開閉窓が開放した際に外からの空気の槽内への侵入を阻止し、槽内の乾燥状態を維持できる。
【0009】
また、本発明恒温槽を備えた自動引張試験機は、引張試験機負荷機構部を備える恒温槽の前面に、標線追跡用観測窓を備える主ドアーを開閉可能に設け、恒温槽の主ドアー開口部に乾燥空気のエアーカーテンを設けてある。即ち、上記開閉窓と同様に恒温槽の主ドアーを開放しても、その開口部からの外の空気の侵入を阻止し、槽内の乾燥状態を維持することができる。
さらに、本発明恒温槽を備えた自動引張試験機は、上記観測窓が外側ガラスと内側ガラスを備える角筒からなり、この角筒内に乾燥空気供給パイプを配置し、角筒外側に加熱ヒーターを設けてある。即ち、標線追跡用観測窓内に乾燥空気を供給すると共に加熱ヒーターで観測窓を加熱するから、観測窓を常に曇らないようにし、常に正常な観測ができるものである。
【0010】
【発明の実施の形態】
以下図面に示した実施例により本発明恒温槽を備える自動引張試験機の詳細を説明する。図1及び図2に本発明自動引張試験機の全体の概略正面図と概略平面図を示してある。図中符号1が恒温槽2内に収められた引張試験機負荷機構部で、この引張試験機負荷機構部1の左側に、試験片を引張試験機負荷機構部1に自動的に供給するメイン供給部3を位置付けて配置してあり、引張試験機負荷機構部1の右側に、メイン供給部3から供給された試験片を引張試験機負荷機構部1の後述するクロスヘッドの試験片つかみ具に供給するサブ供給部4を位置付けて配置してある。
さらに、図中符号5が恒温槽2内を冷却する冷凍機部であり、また符号6が恒温槽2内及び後述する標線追跡用観測窓等に乾燥空気を供給する乾燥空気供給部である。引張試験機負荷機構部1を収める恒温槽2には、前面に主ドアー7を開閉自在に設けてあり、この主ドアー7に標線追跡観測窓8を設け、その前方に標線追跡観測部9を設けてある。この他図中符号10は標線計測部であり、符号11がパソコンからなるデータ処理部である。
【0011】
図3及び図4に恒温槽2内の引張試験機負荷機構部1の正面及び平面が示してあり、図3ではクロスヘッドを省略して示してある。図4に示した符号12がクロスヘッドで、公知の引張試験機と同様に上下に配置され、一対の駆動ネジ13,13に支持され、駆動ネジ13,13の回転駆動によりクロスヘッド12が上下作動するように支持されている。上下のクロスヘッド13,13には上下の試験片つかみ具14,14を設けてあり、試験片15の上下をつかんで引張り試験を行う。試験片つかみ具14,14の上下動は、両つかみ具14の上下作動又は片側のつかみ具14だけの上下動により行う。
【0012】
上記クロスヘッド12を支持する一対の駆動ネジ13,13は、図4に示すように前後に位置をずらせて配置してあり、この駆動ネジ13,13間に架設支持したクロスヘッド12を平面からみて斜めに配置してある。図示した実施例ではその斜め角を45度にしてあるが、これは45度に限定されない。この配置により試験片15を真横から試験片つかみ具14に直線的に送り込むことができる。そしてこのクロスヘッド12を斜めに配置することにより、試験片つかみ具14が大きく、駆動ネジ13との間の間隔が小さくても試験片15の送り込みが容易となる。
【0013】
図3及び図4中の符号16は、恒温槽2内の上下一対の試験片つかみ具14,14位置の左側真横に配置して設けた試験片仲介搬送部で、後述するメイン供給部3からの試験片15を試験片つかみ具14,14まで送り込むために仲介して搬送するものである。この試験片仲介搬送部16は試験片を図上左から右方向に水平方向に搬送するために、循環作動する無端循環体17に多数の試験片挟持片18,18を設けたものである。
【0014】
同じく図3及び図4に示した符号20は、サブ供給部4に設けた左右方向往復作動杆19の先端に設けた試験片挟持部で、恒温槽2内で左右方向に往復移動し、試験片つかみ具14,14の右側の位置から試験片つかみ具14,14間を通過して左方向に移動し、最終位置で試験片仲介搬送部16の最右端の試験片15をつかみ、僅かに移動した位置で90度回動して水平状態にあった試験片15を垂直状態に移動し、この垂直位置でさらに僅かに移動して試験片15を試験片つかみ具14,14に供給する。そして試験片つかみ具14,14が試験片15をつかんだら、さらに右方向に移動作動して次の作動のために待機するように構成してある。
【0015】
図5及び図6には、引張試験機負荷機構部1の左側に配置したメイン供給部3の正面及び平面が示してある。このメイン供給部3には、多数の試験片15を平行して載置した例えば特許第3143779号公報に開示の試験片トレー21を収納棚22内に多段状に積層し、最上段の試験片トレー21を収納棚22から露出させ、一枚一枚の試験片15を上記試験片仲介搬送部16に供給するようにしてある。図中23が最上段の試験片トレー21を収納棚22から露出させるための送り出し部であり、24が試験片トレー21上から一枚一枚の試験片15を吸引してつかみ、これを上記試験片仲介搬送部に送り込む送り込み部である。
上記恒温槽2の横壁の試験片仲介搬送部16に臨む位置に開閉窓25を設け、この開閉窓25に上記送り込み部24の試験片送り込み作動と同期して開閉する開閉扉25を設けてある。
【0016】
図7に駆動ネジ13の断面が示してある。この駆動ネジ13はベアリング26に回転自在に支持されており、このベアリング26内にヒーター27及び温度センサー28を配置してある。即ち、恒温槽2内を冷却し、低温下において引張り試験をする際、ヒーター27によって駆動ネジを加熱し、駆動ネジ13とクロスヘッド12の雌ねじとの間の凍結を防止する。また、温度センサー28によって、駆動ネジ13の温度を一定に保つように自動制御ができるようにしてある。
【0017】
また、恒温槽2内に乾燥空気供給部6から乾燥空気を供給するようにしてあり、この乾燥空気供給によって恒温槽2内を乾燥させた状態に維持するようにしてあり、低温下における恒温槽2内の水分を除去し、槽内各部の凍結を防止する。また、常に乾燥空気を槽内に供給し、充満させ、恒温槽内の僅かな隙間から乾燥空気が少しずつ漏れるようにして、外気が恒温槽2内に侵入するのを阻止し、槽内の乾燥状態を維持するようにしてある。
【0018】
恒温槽2の主ドアー7の開口部及び恒温槽2の横壁の開閉窓25には、乾燥空気のエアーカーテンを設けてあり、乾燥空気供給部6からの乾燥空気を送り出すようにしてある。
図8及び図9に標線追跡観測窓8を示してあり、この標線追跡観測窓8は、外側ガラス29と内側ガラス30を備える角筒からなり、この角筒の左右側壁31の外側にヒーター32を設けてあり、このヒーター32の熱で標線追跡用観測窓8を加熱するようにしてある。さらに、この観測窓8内には乾燥空気供給パイプ33を配置し、このパイプ33の噴出口34から観測窓8内に観測空気を供給して、上記ヒーターの加熱とにより観測窓8が曇らないようにしてある。
【0019】
【発明の効果】
本発明恒温槽を備えた自動引張試験機は、恒温槽内に引張試験機負荷機構部を備え、引張り試験機負荷機構部に試験片を自動的に供給する自動引張試験機であって、試験片つかみ具を備えるクロスヘッドを駆動する一対の駆動ネジを正面からみて前後に位置をずらせて配置し、一対の駆動ネジ間に架設したクロスヘッドを平面からみて斜めに配置してあるから、試験片つかみ具の真横にクロスヘッド用の駆動ネジが配置されず、試験片つかみ具に対して真横から試験片を供給でき、試験片つかみ具への試験片供給の動作を簡素化できる効果がある。即ち、自動機として動作部を極力少なくすることができ、効率を上げることができる効果もある。
【0020】
また、本発明恒温槽を備えた自動引張試験機は、上記駆動ネジを中空ネジとしてベアリングに回転可能に支持し、該ベアリング内にヒーターを配置してあるから、駆動ネジ内にヒーターを配置して駆動ネジを過熱し、0℃以下の低温下においても駆動ネジ及びクロスヘッドの雌ねじを凍結することなく、0℃以下の低温下で円滑な動作が得られる効果がある。
さらに、上記ベアリング内に温度センサーを配置してあるから、温度センサーにより駆動ネジの温度を一定の温度になるよう自動制御ができ、槽内温度を変えても駆動ネジが凍結しないようにできる効果がある。
【0021】
また、本発明恒温槽を備えた自動引張試験機は、上記恒温槽内に乾燥空気を充満させてあるから、低温下において恒温槽内各部が凍結するのは、槽内の水分が凍結の原因となるから、槽内の水分を除去し、槽内各部が凍結しないようにできる効果がある。また、つかみ具がエアー式の場合には、乾燥空気でもって動作させるとつかみ具の凍結防止にもなる。
さらに、上記恒温槽内に乾燥空気が充満している状態で、恒温槽内にさらに乾燥空気を供給し恒温槽から乾燥空気を少しずつ漏れるようにしてあるから、常に槽内から外に乾燥空気を漏らすことで、槽外の空気の槽内への侵入を阻止し、槽内の乾燥状態を維持できる効果がある。
【0022】
また、本発明恒温槽を備えた自動引張試験機は、引張試験機負荷機構部を備える恒温槽の横側に試験片自動供給装置を配置し、恒温槽の該試験片自動供給装置と対向する横壁の位置に開閉窓を設け、この開閉窓に乾燥空気のエアーカーテンを設けてあるから、試験片自動供給装置によって、恒温槽内の引張試験機負荷機構部内に試験片を自動供給するため、恒温槽の横壁に開閉窓を設けてあり、この開閉窓が開放した際に外からの空気の槽内への侵入を阻止し、槽内の乾燥状態を維持できる効果がある。
【0023】
また、本発明恒温槽を備えた自動引張試験機は、引張試験機負荷機構部を備える恒温槽の前面に、標線追跡用観測窓を備える主ドアーを開閉可能に設け、恒温槽の主ドアー開口部に乾燥空気のエアーカーテンを設けてあるから、上記開閉窓と同様に恒温槽の主ドアーを開放しても、その開口部からの外の空気の侵入を阻止し、槽内の乾燥状態を維持することができる効果がある。
さらに、本発明恒温槽を備えた自動引張試験機は、上記観測窓が外側ガラスと内側ガラスを備える角筒からなり、この角筒内に乾燥空気供給パイプを配置し、角筒外側に加熱ヒーターを設けてあるから、標線追跡用観測窓内に乾燥空気を供給すると共に加熱ヒーターで観測窓を加熱するから、観測窓を常に曇らないようにし、槽外部からの視界を確保し標線追跡装置の追跡の妨げとならないようにして、常に正常な観測ができる効果がある。
【図面の簡単な説明】
【図1】本発明恒温槽を備えた自動引張試験機の全体を示す概略正面図。
【図2】同じく概略平面図。
【図3】同じく引張試験機負荷機構部の正面図。
【図4】同じく引張試験機負荷機構部の平面図。
【図5】同じく試験片供給装置の正面図。
【図6】同じく試験片供給装置の平面図。
【図7】駆動ネジの断面図。
【図8】観測窓の正面図。
【図9】観測窓の断面図。
【符号の説明】
1 引張試験機負荷機構部
2 恒温槽
3 メイン供給部
4 サブ供給部
5 冷凍機部
6 乾燥空気供給部
7 主ドアー
8 標線追跡観測窓
9 標線追跡観測部
10 標線計測部
11 データ処理部
12 クロスヘッド
13 駆動ネジ
14 試験片つかみ具
15 試験片
16 試験片中介搬送部
17 無端循環体
18 挟持片
19 左右方向往復作動杆
20 試験片挟持片
21 試験片トレー
22 収納棚
23 送り出し部
24 送り込み部
25 開閉窓
26 ベアリング
27 ヒーター
28 温度センサー
29 外側ガラス
30 内側ガラス
31 側壁
32 ヒーター
33 乾燥空気供給パイプ
34 噴出口
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tensile tester for performing a tensile test on various test pieces, and more particularly to an automatic tensile tester equipped with a thermostatic bath.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an automatic tensile tester equipped with a marked line tracking device that automatically supplies a test piece to a tensile tester and performs a tensile test and tracks and measures the elongation or breakage of the test piece is known. Also known is an automatic tensile testing machine equipped with a thermostatic chamber for performing a tensile test of a test piece at a high temperature.
[0003]
[Problems to be solved by the invention]
Generally, a crosshead for vertically operating a gripping tool that holds the top and bottom of a test piece of a tensile tester is positioned side by side as viewed from the front. Also, this kind of tensile tester is usually installed near the wall, and automatic supply of test pieces is often performed from the side of the tester. Therefore, the automatic test strip supply device is installed at either the left or right lateral position of the tester load mechanism.
However, since the drive screw for moving the crosshead up and down is arranged side by side at the left and right positions of the test piece gripper, this drive screw becomes an obstacle, and the test piece is moved laterally with respect to the test piece gripper. Just can't supply.
Therefore, the supply of the test piece must be first moved laterally toward the test piece grip, supplied to the front / rear position of the test piece grip, and then moved back and forth toward the test piece grip. There was a problem that it needed action.
[0004]
Next, when testing a tensile test of a test piece with this kind of tensile testing machine in a thermostatic chamber at a high temperature, there is little problem, but in a thermostatic bath at a low temperature of 0 ° C. or less. There are various problems with testing.
One of them is that the drive screw that controls the vertical movement of the crosshead and the female screw of the crosshead are frozen, and the crosshead does not move. This is because moisture in the air causes freezing, which not only freezes the crosshead and drive screw, but also for the test piece transport device in the thermostatic chamber, the freezing of the test piece gripper, and the marked line tracking device. There is a problem of cloudiness in the observation window.
In view of the above-mentioned problems, the present invention simplifies the operation of supplying the test piece to the test piece gripper to eliminate useless movement, and performs a smooth tensile test without freezing, fogging, etc. of each part even at low temperatures. The present invention provides a novel automatic tensile tester capable of performing the above.
[0005]
[Means for Solving the Problems]
Therefore, the automatic tensile testing machine equipped with the thermostatic bath of the present invention is an automatic tensile testing machine that includes a tensile testing machine load mechanism in the thermostatic bath and automatically supplies test pieces to the tensile testing machine load mechanism. The pair of drive screws for driving the crosshead provided with the test piece gripper are arranged so as to be displaced forward and backward when viewed from the front, and the crosshead installed between the pair of drive screws is arranged obliquely when viewed from the plane. . That is, since the crosshead drive screw is not disposed directly beside the test piece gripper, the test piece can be supplied from the side to the test piece gripper, and the operation of supplying the test piece to the test piece gripper can be simplified. .
[0006]
Moreover, the automatic tensile testing machine provided with the thermostat of the present invention supports the drive screw as a hollow screw rotatably on a bearing, and a heater is arranged in the bearing. In other words, a heater is placed in the drive screw, the drive screw is overheated, and smooth operation is obtained at a low temperature of 0 ° C. or lower without freezing the drive screw and the female screw of the cross head even at a low temperature of 0 ° C. or lower. It is done.
Furthermore, a temperature sensor is arranged in the bearing. That is, the temperature can be automatically controlled by the temperature sensor so that the temperature of the drive screw becomes a constant temperature, and the drive screw can be prevented from freezing even if the temperature in the tank is changed.
[0007]
Moreover, the automatic tensile testing machine provided with the thermostat of the present invention is filled with dry air in the thermostat. That is, the reason why each part in the thermostatic chamber freezes at a low temperature is that moisture in the tank causes freezing. Therefore, moisture in the tank can be removed so that each part in the tank does not freeze.
Further, in the state where the constant temperature bath is filled with dry air, dry air is further supplied into the constant temperature bath so that the dry air leaks little by little from the constant temperature bath. That is, by always leaking dry air from the inside of the tank, it is possible to prevent the air outside the tank from entering the tank and maintain the dry state in the tank.
[0008]
Moreover, the automatic tensile testing machine provided with the thermostatic bath of the present invention has an automatic test piece supply device disposed on the side of the thermostatic bath provided with the tensile tester load mechanism, and faces the automatic test piece supply device of the thermostatic bath. An opening / closing window is provided at the position of the horizontal wall, and an air curtain for dry air is provided on the opening / closing window. That is, in order to automatically supply the test piece into the tensile tester load mechanism in the constant temperature bath by the automatic test piece supply device, an open / close window is provided on the horizontal wall of the constant temperature bath, and when this open / close window is opened, it is externally provided. The air can be prevented from entering the tank, and the dry state in the tank can be maintained.
[0009]
Further, the automatic tensile testing machine equipped with the thermostatic bath of the present invention is provided with a main door provided with an observation window for tracking the mark on the front surface of the thermostatic bath provided with the tensile tester load mechanism, so that the main door of the thermostatic bath can be opened and closed. An air curtain of dry air is provided at the opening. That is, even if the main door of the thermostatic chamber is opened as in the case of the opening / closing window, it is possible to prevent outside air from entering from the opening and maintain the dry state in the chamber.
Furthermore, the automatic tensile testing machine equipped with the thermostat according to the present invention comprises a rectangular tube in which the observation window includes an outer glass and an inner glass, a dry air supply pipe is disposed in the rectangular tube, and a heater is provided outside the rectangular tube. Is provided. That is, since dry air is supplied into the observation window for tracking the marked line and the observation window is heated by the heater, the observation window is not always fogged, and normal observation can be always performed.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The details of an automatic tensile testing machine equipped with the thermostat of the present invention will be described below with reference to the embodiments shown in the drawings. 1 and 2 are a schematic front view and a schematic plan view of the whole automatic tensile testing machine of the present invention. In the figure, reference numeral 1 denotes a tensile tester load mechanism unit housed in a thermostat 2. A test piece is automatically supplied to the tensile tester load mechanism unit 1 on the left side of the tensile tester load mechanism unit 1. The supply part 3 is positioned and arranged, and a test piece supplied from the main supply part 3 is placed on the right side of the tensile tester load mechanism part 1 with a crosshead test piece gripping tool described later of the tensile tester load mechanism part 1. The sub-feeding part 4 for feeding to is positioned and arranged.
Further, in the figure, reference numeral 5 denotes a refrigerator unit that cools the inside of the thermostatic chamber 2, and reference numeral 6 denotes a dry air supply unit that supplies dry air to the inside of the thermostatic bath 2 and an observation window for tracking a trace that will be described later. . The constant temperature chamber 2 that houses the tensile tester load mechanism 1 is provided with a main door 7 that can be freely opened and closed on the front surface. A main line tracking observation window 8 is provided on the main door 7, and a front line tracking observation unit is provided in front of it. 9 is provided. In addition, the code | symbol 10 in a figure is a marked line measurement part, and the code | symbol 11 is a data processing part which consists of a personal computer.
[0011]
3 and 4 show the front and plane of the tensile tester load mechanism 1 in the thermostat 2, and the crosshead is omitted in FIG. Reference numeral 12 shown in FIG. 4 is a cross head, which is arranged up and down like a known tensile testing machine, supported by a pair of drive screws 13 and 13, and the cross head 12 is moved up and down by the rotational drive of the drive screws 13 and 13. Supported to operate. The upper and lower crossheads 13 and 13 are provided with upper and lower test piece grips 14 and 14, respectively, and a tensile test is performed by holding the upper and lower sides of the test piece 15. The vertical movements of the test piece grips 14 and 14 are performed by the vertical movement of both grips 14 or the vertical movement of only one side grip 14.
[0012]
As shown in FIG. 4, the pair of drive screws 13 and 13 that support the cross head 12 are arranged with their positions shifted back and forth, and the cross head 12 that is installed and supported between the drive screws 13 and 13 is seen from a plane. It is arranged diagonally. In the illustrated embodiment, the oblique angle is 45 degrees, but this is not limited to 45 degrees. With this arrangement, the test piece 15 can be linearly fed from the side to the test piece gripping tool 14. By disposing the cross head 12 at an angle, the test piece gripping tool 14 is large, and the test piece 15 can be easily fed even if the distance from the drive screw 13 is small.
[0013]
Reference numeral 16 in FIGS. 3 and 4 is a test piece intermediary transporting portion provided on the left side of the position of the pair of upper and lower test piece grips 14 and 14 in the thermostatic chamber 2. In order to feed the test piece 15 to the test piece grips 14, 14, the test piece 15 is mediated and conveyed. The test piece mediating and transporting section 16 is provided with a large number of test piece holding pieces 18 and 18 on an endless circulating body 17 that circulates in order to transport the test pieces in the horizontal direction from left to right in the drawing.
[0014]
Similarly, reference numeral 20 shown in FIGS. 3 and 4 is a test piece holding portion provided at the tip of a left-right reciprocating operation rod 19 provided in the sub-feeding portion 4, and reciprocally moves in the left-right direction in the thermostat 2. From the position on the right side of the single gripping tool 14, 14, it passes between the test piece gripping tools 14, 14 and moves to the left, and at the final position, grips the rightmost test strip 15 of the test strip mediating transport unit 16 and slightly The test piece 15 that has been rotated by 90 degrees at the moved position and moved in the horizontal state is moved to the vertical state, and further moved slightly in this vertical position to supply the test piece 15 to the test piece grips 14 and 14. When the test piece grips 14 and 14 hold the test piece 15, the test piece grips 14 and 14 are further moved to the right to wait for the next operation.
[0015]
5 and 6 show the front and plane of the main supply unit 3 disposed on the left side of the tensile tester load mechanism unit 1. In the main supply unit 3, test piece trays 21 disclosed in, for example, Japanese Patent No. 31437979 on which a large number of test pieces 15 are placed in parallel are stacked in a multi-tiered manner in a storage shelf 22, and the uppermost test piece is obtained. The tray 21 is exposed from the storage shelf 22, and each test piece 15 is supplied to the test piece intermediary transport unit 16. In the figure, reference numeral 23 denotes a feeding section for exposing the uppermost test piece tray 21 from the storage shelf 22, and 24 aspirates and holds each test piece 15 from above the test piece tray 21. It is a sending-in part sent in to a test piece mediation conveyance part.
An opening / closing window 25 is provided at a position on the side wall of the thermostatic chamber 2 facing the test piece mediating / conveying section 16, and an opening / closing door 25 that opens and closes in synchronization with the test piece feeding operation of the feeding section 24 is provided in the opening / closing window 25. .
[0016]
FIG. 7 shows a cross section of the drive screw 13. The drive screw 13 is rotatably supported by a bearing 26, and a heater 27 and a temperature sensor 28 are disposed in the bearing 26. That is, when the inside of the thermostatic chamber 2 is cooled and a tensile test is performed at a low temperature, the drive screw is heated by the heater 27 to prevent freezing between the drive screw 13 and the female screw of the cross head 12. Further, the temperature sensor 28 can be automatically controlled so as to keep the temperature of the drive screw 13 constant.
[0017]
In addition, the dry air is supplied from the dry air supply unit 6 into the thermostatic chamber 2, and the constant temperature bath 2 is maintained in a dry state by this dry air supply. The moisture in 2 is removed, and freezing of each part in the tank is prevented. Also, always supply dry air into the tank and fill it up, so that the dry air leaks little by little from the small gap in the thermostat, preventing the outside air from entering the thermostat 2, The dry state is maintained.
[0018]
An air curtain for dry air is provided in the opening of the main door 7 of the thermostat 2 and the opening / closing window 25 on the lateral wall of the thermostat 2 so that the dry air from the dry air supply unit 6 is sent out.
8 and 9 show a marked line tracking observation window 8. The marked line tracking observation window 8 is composed of a rectangular tube having an outer glass 29 and an inner glass 30, and is formed outside the left and right side walls 31 of the rectangular tube. A heater 32 is provided, and the marked line tracking observation window 8 is heated by the heat of the heater 32. Further, a dry air supply pipe 33 is disposed in the observation window 8, and observation air is supplied into the observation window 8 from the jet port 34 of the pipe 33, and the observation window 8 is not clouded by the heating of the heater. It is like that.
[0019]
【The invention's effect】
The automatic tensile testing machine equipped with the thermostatic bath of the present invention is an automatic tensile testing machine equipped with a tensile tester load mechanism in the thermostatic bath and automatically supplies a test piece to the tensile tester load mechanism. A pair of drive screws that drive a crosshead equipped with a single gripper are arranged with their positions shifted from the front and back when viewed from the front, and the crosshead installed between the pair of drive screws is arranged obliquely when viewed from the plane. The crosshead drive screw is not placed directly beside the gripper, so that the test strip can be supplied from the side to the test strip gripper, and the operation of supplying the test strip to the test strip gripper can be simplified. . That is, as an automatic machine, the number of operating parts can be reduced as much as possible, and the efficiency can be increased.
[0020]
Further, the automatic tensile testing machine equipped with the thermostatic bath of the present invention supports the drive screw as a hollow screw rotatably on the bearing, and the heater is arranged in the bearing. Therefore, the heater is arranged in the drive screw. Thus, the drive screw is overheated, and a smooth operation can be obtained at a low temperature of 0 ° C. or lower without freezing the drive screw and the female screw of the cross head even at a low temperature of 0 ° C. or lower.
In addition, since the temperature sensor is arranged in the bearing, the temperature sensor can automatically control the temperature of the drive screw to be a constant temperature, and the drive screw can be prevented from freezing even if the temperature in the tank is changed. There is.
[0021]
In addition, since the automatic tensile testing machine equipped with the thermostatic bath of the present invention is filled with dry air in the thermostatic bath, each part in the thermostatic bath freezes at low temperatures because the moisture in the bath is the cause of freezing Therefore, there is an effect that moisture in the tank can be removed and each part in the tank can be prevented from freezing. Further, when the gripping tool is an air type, the gripping tool can be prevented from freezing when operated with dry air.
Furthermore, since the drying chamber is filled with dry air, further drying air is supplied into the thermostatic bath so that the drying air is gradually leaked from the thermostatic bath. Is effective to prevent the air outside the tank from entering the tank and maintain the dry state in the tank.
[0022]
Moreover, the automatic tensile testing machine provided with the thermostatic bath of the present invention has an automatic test piece supply device disposed on the side of the thermostatic bath provided with the tensile tester load mechanism, and faces the automatic test piece supply device of the thermostatic bath. An open / close window is provided at the position of the horizontal wall, and an air curtain of dry air is provided on the open / close window, so that the test piece is automatically supplied into the tensile tester load mechanism in the thermostat by the automatic test piece supply device. An opening / closing window is provided on the horizontal wall of the thermostatic bath, and when the opening / closing window is opened, there is an effect of preventing the entry of air from the outside into the bath and maintaining the dry state in the bath.
[0023]
Further, the automatic tensile testing machine equipped with the thermostatic bath of the present invention is provided with a main door provided with an observation window for tracking the mark on the front surface of the thermostatic bath provided with the tensile tester load mechanism, so that the main door of the thermostatic bath can be opened and closed. Since the air curtain of dry air is provided in the opening, even if the main door of the thermostatic bath is opened like the above open / close window, the intrusion of outside air from the opening is prevented, and the dry state in the bath There is an effect that can be maintained.
Furthermore, the automatic tensile testing machine equipped with the thermostat according to the present invention comprises a rectangular tube in which the observation window includes an outer glass and an inner glass, a dry air supply pipe is disposed in the rectangular tube, and a heater is provided outside the rectangular tube. Since dry air is supplied into the observation window for tracking the mark and the observation window is heated with a heater, the observation window is not always fogged, ensuring visibility from outside the tank and tracking the mark. There is an effect that normal observation can always be performed without interfering with the tracking of the apparatus.
[Brief description of the drawings]
FIG. 1 is a schematic front view showing the whole of an automatic tensile testing machine equipped with a thermostat according to the present invention.
FIG. 2 is a schematic plan view of the same.
FIG. 3 is a front view of the tensile tester load mechanism.
FIG. 4 is a plan view of the same tensile tester load mechanism.
FIG. 5 is a front view of the test piece supply apparatus.
FIG. 6 is a plan view of the test piece supply apparatus.
FIG. 7 is a cross-sectional view of a drive screw.
FIG. 8 is a front view of an observation window.
FIG. 9 is a cross-sectional view of an observation window.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tensile tester load mechanism part 2 Constant temperature bath 3 Main supply part 4 Sub supply part 5 Refrigerator part 6 Dry air supply part 7 Main door 8 Marked line tracking observation window 9 Marked line tracking observation part 10 Marked line measurement part 11 Data processing Section 12 Crosshead 13 Drive screw 14 Test piece gripping tool 15 Test piece 16 Test piece intermediary transport section 17 Endless circulating body 18 Holding piece 19 Left-right reciprocating operation rod 20 Test piece holding piece 21 Test piece tray 22 Storage shelf 23 Delivery section 24 Feeding section 25 Open / close window 26 Bearing 27 Heater 28 Temperature sensor 29 Outer glass 30 Inner glass 31 Side wall 32 Heater 33 Dry air supply pipe 34 Spout

Claims (6)

恒温槽内に引張試験機負荷機構部を備え、引張試験機負荷機構部に試験片を自動的に供給する自動引張試験機であって、試験片つかみ具を備えるクロスヘッドを駆動する一対の駆動ネジを自動引張試験機の正面からみて前後に位置をずらせて配置し、一対の駆動ネジ間に架設したクロスヘッドを自動引張試験機の平面からみて斜めに配置してあり、上記駆動ネジを中空ネジとしてベアリングに回転可能に支持し、該ベアリング内にヒーターを配置してあるとともに、上記ベアリング内に温度センサーを配置してある恒温槽を備えた自動引張試験機。A pair of drives that drive a crosshead equipped with a test piece gripper that is equipped with a tensile tester load mechanism in a thermostat and automatically supplies test pieces to the tensile tester load mechanism. It arranged shifting the position in the front-rear as viewed from the front of the automatic tensile testing machine screws, Yes arranged obliquely when viewed from the plane of the automatic tensile tester crosshead was extended between the pair of drive screws, hollow and the drive screw An automatic tensile testing machine provided with a thermostatic chamber which is rotatably supported by a bearing as a screw, a heater is disposed in the bearing, and a temperature sensor is disposed in the bearing . 上記恒温槽内に乾燥空気を充満させてある上記請求項1に記載の恒温槽を備えた自動引張試験機。The automatic tensile testing machine provided with the thermostat according to claim 1 , wherein the thermostat is filled with dry air. 上記恒温槽内に乾燥空気が充満している状態で、恒温槽内にさらに乾燥空気を供給し恒温槽から乾燥空気が少しずつ漏れるようにしてある上記請求項2に記載の恒温槽を備えた自動引張試験機。The temperature-controlled bath according to claim 2 , wherein the temperature-controlled bath is further filled with dry air so that dry air is further supplied into the temperature-controlled bath so that the dry air gradually leaks from the temperature-controlled bath. Automatic tensile testing machine. 引張試験機負荷機構部を備える恒温槽の横側に試験片自動供給装置を配置し、恒温槽の該試験片自動供給装置と対向する横壁の位置に開閉窓を設け、この開閉窓に乾燥空気のエアーカーテンを設けてある上記請求項1〜3の何れかに記載の恒温槽を備えた自動引張試験機。An automatic test piece supply device is arranged on the side of the thermostatic chamber equipped with the tensile tester load mechanism, and an open / close window is provided at a position of the horizontal wall facing the automatic test piece supply device of the constant temperature bath. The automatic tensile testing machine provided with the thermostat in any one of the said Claims 1-3 which provided the air curtain of this. 引張試験機負荷機構部を備える恒温槽の前面に、標線追跡用観測窓を備える主ドアーを開閉可能に設け、恒温槽の主ドアー開口部に乾燥空気のエアーカーテンを設けてある上記請求項1〜4の何れかに記載の恒温槽を備えた自動引張試験機。The above-mentioned claim, wherein a main door provided with an observation window for tracking the marked line is provided on the front surface of the thermostat equipped with the tensile tester load mechanism, and an air curtain for dry air is provided at the main door opening of the thermostat. The automatic tensile testing machine provided with the thermostat in any one of 1-4 . 上記観測窓が外側ガラスと内側ガラスを備える角筒からなり、この角筒内に乾燥空気供給パイプを配置し、角筒外側に加熱ヒーターを設けてある上記請求項1〜5の何れかに記載の恒温槽を備えた自動引張試験機。The said observation window consists of a square tube provided with an outer side glass and an inner side glass, the dry-air supply pipe is arrange | positioned in this square tube, and the heater is provided in the square tube outer side in any one of the said Claims 1-5. Automatic tensile testing machine equipped with a constant temperature bath.
JP2002320599A 2002-11-05 2002-11-05 Automatic tensile testing machine equipped with a constant temperature bath Expired - Fee Related JP3935418B2 (en)

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JP5065439B2 (en) * 2009-05-12 2012-10-31 大陽日酸株式会社 Low temperature tensile testing machine
CN103261870B (en) 2010-12-15 2016-08-24 株式会社神户制钢所 Tyre testing apparatus
JP5284340B2 (en) * 2010-12-15 2013-09-11 株式会社神戸製鋼所 Tire testing equipment
CN111289354B (en) * 2018-12-10 2022-10-14 中国科学院宁波材料技术与工程研究所 Tensile fixture and tensile testing machine
JP7132870B2 (en) * 2019-02-26 2022-09-07 エスペック株式会社 Environmental test equipment and test equipment
CN111811928A (en) * 2020-08-31 2020-10-23 广东科建仪器有限公司 High-low temperature tensile test machine
CN117589591B (en) * 2024-01-18 2024-03-22 常州岚玥新材料科技有限公司 High-temperature tensile testing device for carbon-carbon composite material

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