JP2004156933A

JP2004156933A - Automatic tension testing machine with constant temperature bath

Info

Publication number: JP2004156933A
Application number: JP2002320599A
Authority: JP
Inventors: Koichi Ota; 耕一太田; Yoshinori Ota; 好則太田
Original assignee: Toyo Seiki Seisaku-sho Ltd
Current assignee: Toyo Seiki Seisaku-sho Ltd
Priority date: 2002-11-05
Filing date: 2002-11-05
Publication date: 2004-06-03
Anticipated expiration: 2022-11-05
Also published as: JP3935418B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide an automatic tension testing machine in which motions by which a test piece is supplied to a test piece holding tool are made simple, wasteful behaviors are removed, and freezing, hazing or the like is prevented even under a low temperature condition, and thereby carrying out a tension test smoothly. <P>SOLUTION: In the automatic tension testing machine, which has a loading mechanism 1 for the tension testing machine in a constant temperature bath 2 and supplies the test piece 15 automatically to the loading mechanism 1 for the tension testing machine, a pair of drive screws 13 which drive a cross head 12 having the test piece holding tool 14 are arranged at off positions back and forth when viewed from the front, and the cross head 12 which is installed between the pair of drive screws 13 is disposed obliquely when viewed in the vertical direction, and a heater 27 is disposed in a bearing 26 which supports the drive screw 13, and the constant temperature bath 2 is filled with drying air. <P>COPYRIGHT: (C)2004,JPO

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]
TECHNICAL FIELD 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 provided with a thermostat.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there is known an automatic tensile tester equipped with a mark tracking device that automatically supplies a test specimen to a tensile tester to perform a tensile test and track and measure the elongation or breakage of the test specimen. Further, an automatic tensile tester equipped with a thermostat for performing a tensile test on a test piece at a high temperature is also known.
[0003]
[Problems to be solved by the invention]
Generally, crossheads for vertical operation of a gripper for gripping the upper and lower test pieces of a tensile tester are positioned side by side when viewed from the front. In addition, this kind of tensile tester is usually installed near a wall, and automatic supply of test pieces is often performed from the lateral direction of the tester. Therefore, the automatic test strip supply device is installed at a lateral position on either side of the testing machine load mechanism.
However, since the drive screws for vertically moving the crosshead are arranged side by side at the left and right positions of the test piece gripper, the drive screw becomes an obstacle, and the test piece is moved laterally with respect to the test piece gripper. Just can not supply.
Therefore, the supply of the test piece is a wasteful operation in which the test piece must first be moved laterally toward the test piece gripper, supplied to the front and rear positions of the test piece gripper, and then moved back and forth toward the test piece gripper. There was a problem that operation was required.
[0004]
Next, when performing a tensile test of a test piece in a constant temperature bath at a high temperature in a constant temperature bath, there is little problem, but a tensile test at a low temperature of 0 ° C. or less in the constant temperature bath is performed. The test has various problems.
One of the problems is that the drive screw for controlling the vertical movement of the crosshead and the female screw of the crosshead freeze and the crosshead does not move. This is because the moisture in the air causes freezing, which causes not only the freezing of the crosshead and the drive screw, but also the freezing of the test piece transport device in the thermostat, the freezing of the test piece gripper, and the marking line tracking device. There is a problem that the observation window becomes cloudy.
In view of the above problems, the present invention simplifies the operation of supplying a test piece to a test piece gripper, eliminates unnecessary movement, and performs a smooth tensile test by eliminating freezing, fogging, etc. of each part even at a low temperature. The present invention provides a new automatic tensile tester capable of performing the above.
[0005]
[Means for Solving the Problems]
For this purpose, the automatic tensile tester provided with the constant temperature bath of the present invention is an automatic tensile tester including a tensile tester load mechanism in the constant temperature bath and automatically supplying a test piece to the tensile tester load mechanism. A pair of drive screws for driving the crosshead having the test piece gripping tool are disposed so as to be shifted back and forth as viewed from the front, and a crosshead provided between the pair of drive screws is disposed obliquely as viewed from a plane. . That is, since the driving screw for the crosshead is not arranged right beside the test piece gripper, the test piece can be supplied to the test piece gripper from just beside, and the operation of supplying the test piece to the test piece gripper can be simplified. .
[0006]
In the automatic tensile tester provided with the constant temperature bath of the present invention, the drive screw is rotatably supported on a bearing as a hollow screw, and a heater is disposed in the bearing. That is, a heater is arranged in the drive screw to overheat the drive screw, and even at a low temperature of 0 ° C. or less, a smooth operation can be obtained at a low temperature of 0 ° C. or less without freezing the drive screw and the female screw of the crosshead. Can be
Further, a temperature sensor is arranged in the bearing. In other words, the temperature of the driving screw can be automatically controlled by the temperature sensor to be constant, and the driving screw can be prevented from freezing even when the temperature in the bath is changed.
[0007]
Further, in the automatic tensile tester provided with the constant temperature bath of the present invention, the constant temperature bath is filled with dry air. That is, since each part in the thermostatic bath freezes at a low temperature because the water in the bath causes freezing, the water in the bath is removed and each part in the bath can be prevented from freezing.
Further, in a state where the constant temperature bath is filled with the dry air, the dry air is further supplied into the constant temperature bath so that the dry air leaks little by little from the constant temperature bath. In other words, by constantly leaking dry air from the inside of the tank to the outside, the invasion of air outside the tank into the tank can be prevented, and the dry state in the tank can be maintained.
[0008]
Further, the automatic tensile tester provided with the constant temperature bath of the present invention is arranged with an automatic test piece supply device on the side of the constant temperature bath having the tensile tester load mechanism, and faces the automatic test piece supply device of the constant temperature bath. An opening / closing window is provided at the position of the side wall, and an air curtain of dry air is provided in the opening / closing window. That is, in order to automatically supply the test piece into the tensile tester load mechanism in the thermostat by the test piece automatic supply device, an opening / closing window is provided on the side wall of the thermostat, and when the opening / closing window is opened, the window is opened from outside. Of the air can be prevented from entering the tank, and a dry state in the tank can be maintained.
[0009]
Further, the automatic tensile tester provided with the constant temperature bath of the present invention is provided with a main door having a marking line tracking observation window on the front surface of the constant temperature bath including the tensile tester load mechanism so as to be openable and closable, and the main door of the constant temperature bath. An air curtain of dry air is provided in the opening. That is, even if the main door of the thermostatic chamber is opened as in the case of the above-mentioned opening / closing window, the invasion of outside air from the opening can be prevented, and the dry state in the chamber can be maintained.
Further, in the automatic tensile tester provided with the constant temperature bath of the present invention, the observation window is formed of a square tube having an outer glass and an inner glass, a dry air supply pipe is arranged in the square tube, and a heating heater is provided outside the square tube. Is provided. That is, since the observation window is heated by the heater and the dry air is supplied into the observation window for tracking line tracking, the observation window is always kept free from fogging, and normal observation can always be performed.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
The details of the automatic tensile tester provided with the thermostat of the present invention will be described below with reference to the embodiments shown in the drawings. 1 and 2 show a schematic front view and a schematic plan view of the entire automatic tensile tester of the present invention. In the drawing, reference numeral 1 denotes a tensile tester loading mechanism unit housed in a thermostat 2, and 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 unit 3 is positioned and arranged, and a test piece supplied from the main supply unit 3 is gripped on the right side of the tensile tester load mechanism 1 by a cross-head test piece gripper of the tensile tester load mechanism 1 described later. The sub-supply unit 4 for supplying to the hopper is positioned.
Further, in the figure, reference numeral 5 denotes a refrigerator unit for cooling the inside of the constant temperature bath 2, and reference numeral 6 denotes a dry air supply unit for supplying dry air to the inside of the constant temperature bath 2 and an observation window for tracking a tracking line to be described later. . A main door 7 is provided on the front surface of the thermostatic chamber 2 accommodating the tensile tester load mechanism 1 so as to be openable and closable. 9 are provided. In addition, reference numeral 10 in the drawing denotes a marking line measuring unit, and reference numeral 11 denotes a data processing unit including a personal computer.
[0011]
FIGS. 3 and 4 show the front and the plane of the tensile tester loading mechanism unit 1 in the thermostat 2, and in FIG. 3, the crosshead is omitted. Reference numeral 12 shown in FIG. 4 is a crosshead, which is vertically arranged like a known tensile tester, is supported by a pair of drive screws 13, 13, and is driven up and down by rotation of the drive screws 13. Supported to operate. The upper and lower crossheads 13 and 13 are provided with upper and lower test piece grippers 14 and 14, respectively. The vertical movement of the test piece grippers 14 and 14 is performed by the vertical operation of both grippers 14 or the vertical movement of only one gripper 14.
[0012]
As shown in FIG. 4, the pair of drive screws 13 supporting the crosshead 12 are disposed so as to be shifted back and forth, and the crosshead 12 erected and supported between the drive screws 13 is viewed from a plane. Seen 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 into the test piece gripper 14 from the side. By arranging the crosshead 12 obliquely, the test piece 15 can be easily fed even if the test piece gripping tool 14 is large and the space between the test head 15 and the driving screw 13 is small.
[0013]
Reference numeral 16 in FIG. 3 and FIG. 4 denotes a test piece intermediary transport section provided right next to the position of the pair of upper and lower test piece grippers 14 and 14 in the thermostatic chamber 2. The test piece 15 is interposed and conveyed to be sent to the test piece grippers 14. The test piece intermediary transport section 16 is provided with a large number of test piece holding pieces 18, 18 in an endless circulating body 17 that circulates in order to horizontally transport test pieces from left to right in the figure.
[0014]
Similarly, reference numeral 20 shown in FIGS. 3 and 4 denotes a test piece holding section provided at the tip of the left-right reciprocating operating rod 19 provided in the sub-supply section 4, which reciprocates in the left-right direction in the constant temperature bath 2 and performs a test. From the position on the right side of the one-side grippers 14, 14, it moves to the left after passing between the test-piece grippers 14, 14, and at the final position, grasps the rightmost end of the test piece 15 of the test-piece intermediary transport unit 16, and slightly The test piece 15 which has been in the horizontal state by rotating 90 degrees at the moved position is moved to the vertical state, and further moved slightly at this vertical position to supply the test piece 15 to the test piece grippers 14. Then, when the test piece grippers 14 and 14 grip the test piece 15, they are further moved rightward to stand by for the next operation.
[0015]
FIGS. 5 and 6 show the front and the plane of the main supply unit 3 arranged on the left side of the tensile tester load mechanism unit 1. In the main supply unit 3, for example, a test piece tray 21 disclosed in Japanese Patent No. 3143779 in which a large number of test pieces 15 are placed in parallel is stacked in a storage shelf 22 in a multi-stage manner, and the uppermost test piece The tray 21 is exposed from the storage shelf 22, and each test piece 15 is supplied to the test piece intermediary transport section 16. In the drawing, reference numeral 23 denotes a delivery section for exposing the uppermost test piece tray 21 from the storage shelf 22, and reference numeral 24 sucks and grasps each test piece 15 from the test piece tray 21, and grips the same. This is a sending unit that sends the test piece to the intermediary transport unit.
An opening / closing window 25 is provided on the side wall of the constant temperature bath 2 at a position facing the test piece intermediary transport 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 on 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 arranged in the bearing 26. That is, when the inside of the thermostat 2 is cooled and the 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 crosshead 12. Further, the temperature sensor 28 can automatically control the temperature of the driving screw 13 to be kept constant.
[0017]
In addition, dry air is supplied from the dry air supply unit 6 into the constant temperature bath 2, and the inside of the constant temperature bath 2 is kept dry by the supply of the dry air. Remove the water in 2 to prevent freezing of each part in the tank.
In addition, the dry air is always supplied into the bath and filled therein, so that the dry air leaks little by little from the small gap in the constant temperature bath to prevent the outside air from entering the constant temperature bath 2, They are kept dry.
[0018]
The opening of the main door 7 of the thermostat 2 and the opening / closing window 25 on the side wall of the thermostat 2 are provided with an air curtain of dry air so that the dry air from the dry air supply unit 6 is sent out.
FIGS. 8 and 9 show a marker tracking observation window 8. The marker tracking observation window 8 is formed of a square tube having an outer glass 29 and an inner glass 30, and is provided outside the left and right side walls 31 of the square tube. A heater 32 is provided, and the observation window 8 for tracking line tracking is heated by the heat of the heater 32. Further, a drying air supply pipe 33 is arranged in the observation window 8, and observation air is supplied into the observation window 8 from an ejection port 34 of the pipe 33, and the observation window 8 is not fogged by the heating of the heater. It is like that.
[0019]
【The invention's effect】
The automatic tensile tester provided with the constant temperature bath of the present invention is an automatic tensile tester that includes a tensile tester load mechanism in the constant temperature bath and automatically supplies a test piece to the tensile tester load mechanism. A pair of drive screws for driving the crosshead equipped with a single gripping tool are arranged with their positions shifted back and forth when viewed from the front, and the crosshead installed between the pair of drive screws is arranged diagonally when viewed from a plane. The drive screw for the crosshead is not arranged right beside the one-side gripper, and the test piece can be supplied to the test-side holder from just beside, and the operation of supplying the test piece to the test-side holder can be simplified. . That is, there is an effect that the number of operating parts can be reduced as much as an automatic machine and efficiency can be increased.
[0020]
Further, the automatic tensile tester provided with the constant temperature bath of the present invention, the driving screw is rotatably supported on a bearing as a hollow screw, and a heater is disposed in the bearing, so a heater is disposed in the driving screw. Thus, there is an effect that a smooth operation can be obtained at a low temperature of 0 ° C. or less without freezing the drive screw and the internal thread of the crosshead even at a low temperature of 0 ° C. or less.
Furthermore, since the temperature sensor is arranged inside the bearing, the temperature sensor can automatically control the temperature of the driving screw to a constant temperature, so that the driving screw does not freeze even if the temperature in the bath is changed. There is.
[0021]
Further, since the automatic tensile tester equipped with the constant temperature bath of the present invention is filled with dry air in the constant temperature bath, each part in the constant temperature bath freezes at a low temperature because the moisture in the bath causes the freezing. Therefore, there is an effect that the water in the tank is removed and each part in the tank is prevented from freezing. When the gripper is of an air type, the gripper can be prevented from freezing by operating with dry air.
Furthermore, since the dry air is further supplied into the constant temperature bath so that the dry air leaks little by little from the constant temperature bath when the constant temperature bath is filled with the dry air, the dry air always flows out of the bath. Has the effect of preventing air outside the tank from entering the tank and maintaining a dry state inside the tank.
[0022]
Further, the automatic tensile tester provided with the constant temperature bath of the present invention is arranged with an automatic test piece supply device on the side of the constant temperature bath having the tensile tester load mechanism, and faces the automatic test piece supply device of the constant temperature bath. An opening / closing window is provided at the position of the side wall, and an air curtain of dry air is provided on the opening / closing window, so that the test specimen automatic supply device automatically supplies the test specimen to the tensile tester load mechanism in the constant temperature bath. An opening / closing window is provided on the side wall of the constant temperature bath, and when the opening / closing window is opened, entry of air from the outside into the bath is prevented, and there is an effect that a dry state in the bath can be maintained.
[0023]
Further, the automatic tensile tester provided with the constant temperature bath of the present invention is provided with a main door having a marking line tracking observation window on the front surface of the constant temperature bath including the tensile tester load mechanism so as to be openable and closable, and the main door of the constant temperature bath. Since an air curtain of dry air is provided at the opening, even if the main door of the thermostatic chamber is opened as in the case of the above-mentioned opening / closing window, intrusion of outside air from the opening is prevented, and the inside of the tank is dried. There is an effect that can be maintained.
Further, in the automatic tensile tester provided with the constant temperature bath of the present invention, the observation window is formed of a square tube having an outer glass and an inner glass, a dry air supply pipe is arranged in the square tube, and a heating heater is provided outside the square tube. Is provided, dry air is supplied into the observation window for tracking and the heating window is heated by the heater, so that the observation window is always kept free from cloudiness and visibility from outside the tank is secured to track the marking. There is an effect that normal observation can always be performed without obstructing the tracking of the device.
[Brief description of the drawings]
FIG. 1 is a schematic front view showing the entirety of an automatic tensile tester provided with the constant temperature bath of 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 load mechanism of the tensile tester.
FIG. 5 is a front view of the test piece supply device.
FIG. 6 is a plan view of the test piece supply device.
FIG. 7 is a sectional view of a driving 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 testing machine load mechanism part 2 Temperature chamber 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 unit 10 Marked line measurement unit 11 Data processing Part 12 Crosshead 13 Drive screw 14 Test piece gripper 15 Test piece 16 Test piece intermediate transfer section 17 Endless circulator 18 Holding piece 19 Left-right reciprocating operating rod 20 Test piece holding piece 21 Test piece tray 22 Storage shelf 23 Sending section 24 Inlet 25 Opening 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

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恒温槽を備えた自動引張試験機。An automatic tensile tester having a tensile tester loading mechanism in a thermostatic chamber and automatically supplying a test piece to the tensile testing machine load mechanism, and a pair of drives for driving a crosshead having a test piece gripper. An automatic tensile tester equipped with a constant-temperature bath in which screws are displaced back and forth as viewed from the front, and a crosshead provided between a pair of drive screws is disposed obliquely as viewed from a plane.

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上記請求項１に記載の恒温槽を備えた自動引張試験機。2. The automatic tensile tester according to claim 1, wherein the driving screw is rotatably supported on a bearing as a hollow screw, and a heater is disposed in the bearing.

上記ベアリング内に温度センサーを配置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。An automatic tensile tester comprising the constant temperature bath according to claim 2, wherein 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１〜３の何れかに記載の恒温槽を備えた自動引張試験機。An automatic tensile tester provided with the constant temperature bath according to any one of claims 1 to 3, wherein the constant temperature bath 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４に記載の恒温槽を備えた自動引張試験機。The drying apparatus according to claim 4, wherein the drying chamber is further filled with the drying air while the drying chamber is filled with the drying air, and the drying air is gradually leaked from the drying chamber. 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１〜５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 strip supply device is arranged on the side of a thermostat provided with a tensile tester load mechanism, and an opening / closing window is provided at a position of a horizontal wall of the thermostat opposite to the automatic test strip feeder. An automatic tensile tester provided with the constant temperature bath according to any one of claims 1 to 5, wherein the air curtain is provided.

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１〜６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 having an observation window for tracking a marking line is provided so as to be openable and closable on a front surface of a thermostat provided with a tensile tester load mechanism, and an air curtain of dry air is provided at an opening of the main door of the thermostat. An automatic tensile tester comprising the constant temperature bath according to any one of claims 1 to 6.

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１〜７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 glass and an inner glass, The dry air supply pipe is arrange | positioned in this square tube, The heating heater is provided in the said square tube outside, Any one of the said Claims 1-7. Automatic tensile tester equipped with a constant temperature bath.