JPH05196456A - Method and apparatus for measuring demension of cylindrical wall thickness of shear spun can - Google Patents

Abstract

PURPOSE:To obtain a highly reliable measured value without giving no contact flaw and even when a can has various circularities, for measuring cylindrical wall thickness of two-piece can. CONSTITUTION:A can body is inserted into a lower edge section 25b having reference pins 11 and 11' which are respectively inscribed in the thick opening edge wall section of a can body P and the lower thin side wall section near the can bottom, and the probes 10 and 10' which are provided on an upper edge section 25a as to face the pins are brought into contact with the circumferential surface of the can, then, while the can body is being held and oscillated, the wall thicknesses at two points are measured to detect the minimum value. After measuring, the probes 10 and 10' are detached from the can body, the can body is rotated by the specified angle, and proceeding measurement is performed. Thus, entire measurement is completed within one turning of can body.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、絞りしごき缶の缶胴壁
厚寸法測定方法及びその装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring the thickness of a can body wall of a drawn and ironed can and an apparatus therefor.

【０００２】[0002]

【従来の技術とその問題点】絞りしごき加工によって得
られる２ピース缶はよく知られている。このような缶の
缶胴部はアイアニング加工で成形されるが、この成型
時、アイアニングダイの通り芯とパンチの通り芯とがず
れていると成形された缶胴部の壁厚にバラツキが生ず
る。2. Description of the Related Art Two-piece cans obtained by drawing and ironing are well known. The can body of such a can is formed by an ironing process. At this time, if the core of the ironing die and the core of the punch are misaligned, the wall thickness of the formed body of the can varies. Occurs.

【０００３】その壁厚のバラツキは、そのあとの工程で
缶胴の天地（缶軸）方向に荷重が加えられたとき、壁厚
の薄い部分がその荷重に抗しきれず変形し座屈する原因
となる。The variation in the wall thickness is considered to be the cause of the buckling of a portion having a small wall thickness due to deformation of the can body without being able to withstand the load when a load is applied in the vertical direction (can axis) of the can body in the subsequent process. Become.

【０００４】また、その他にも、アイアニング加工で成
形された缶の開口端部をトリミングし、フランジ成形す
る場合、トリミングされた縁部から２〜１０ｍｍほどの
開口端壁部分は、それより下方の、胴壁の大部分を占め
る側壁部よりは肉厚が厚く形成されるが、その部分の壁
厚にバラツキがあると、フランジ割れなどの発生の原因
になる。In addition, when the opening end of the can formed by the ironing process is trimmed and the flange is formed, the opening end wall portion of about 2 to 10 mm from the trimmed edge is located below the can. The wall thickness is formed thicker than the side wall portion occupying most of the body wall, but if the wall thickness of that portion varies, flange cracking or the like may occur.

【０００５】従って、このような事故を防止するため、
開口縁壁部分とそれより下方の側壁部とを含め、缶胴壁
厚のバラツキを無くすよう管理する必要がある。そのた
めの簡単な方法として、作業者がダイヤルゲージを使っ
た厚み測定器で壁厚を測定し、品質管理を行うことが行
われた。しかし、手作業による管理には測定誤差が大き
く問題があった。Therefore, in order to prevent such an accident,
It is necessary to control so as to eliminate variations in the wall thickness of the can body, including the opening edge wall portion and the side wall portion below the opening edge wall portion. As a simple method for that purpose, an operator measured the wall thickness with a thickness gauge using a dial gauge and performed quality control. However, the manual management has a problem that the measurement error is large.

【０００６】そこで、機械的測定手段の開発がなされ、
例えば、特開昭５６ー１２８４０１号公報には、端部近
傍に缶内面と接する第１の測定子を有する回転可能な中
空軸を、缶体内に挿入し、一方、該第１の測定子対向し
て缶体外周面を押圧する第２の測定子を有する固定ダイ
ヤルゲージを使用して、缶体の円周方向の肉厚を計測す
るに当たっては、缶体が振れないよう押さえロールで押
さえながら、缶体を回転させ、それら両測定子間の距離
を計測する技術が開示されている。Therefore, a mechanical measuring means was developed,
For example, in Japanese Unexamined Patent Publication No. 56-128401, a rotatable hollow shaft having a first measuring element in contact with the inner surface of the can near the end is inserted into the can body, while the first measuring element is opposed to the first measuring element. When measuring the wall thickness in the circumferential direction of the can using a fixed dial gauge that has a second measuring element that presses the outer peripheral surface of the can, press the roll with a pressing roll so that the can does not shake. , The technique of rotating the can body and measuring the distance between the two measuring elements is disclosed.

【０００７】又特開昭６４ー３２１１０号公報には、Ｄ
Ｉ缶の肉厚、缶高及び缶底ドーム深さの測定装置が開示
されており、その中、肉厚測定については、缶体を、先
端に缶内面に接する接触子を備えたマンドレルシャフト
にかぶせ、次いで、缶体外にあって該シャフトにかぶせ
られた缶体を押圧する押駒によって、缶体を押して、前
記接触子を缶体内周面に接触させておく一方、缶体外周
面に接する測定子を先端に有するデジタルゲージを作動
させ、該測定子を前記接触子と対向する個所で、缶体外
面に接触させ、その個所の肉厚を測定する技術が示され
ている。なお、１ケ所での測定が終わったら、缶体を所
定角度回転させ、複数個所で測定するようになってい
る。Further, Japanese Patent Laid-Open No. 64-32110 discloses D
I A thickness measuring device for a can, a can height and a can bottom dome depth is disclosed. Among them, for measuring the thickness, a can body is mounted on a mandrel shaft equipped with a contactor which is in contact with the inner surface of the can. Then, the contact body is pushed by a pressing piece which is located outside the body and presses the body covered with the shaft, and the contactor is kept in contact with the inner surface of the body of the can while contacting the outer surface of the body of the can. There is disclosed a technique in which a digital gauge having a measuring element at its tip is operated, the measuring element is brought into contact with the outer surface of the can body at a portion facing the contact, and the wall thickness of the portion is measured. When the measurement at one place is completed, the can body is rotated by a predetermined angle to measure at a plurality of places.

【０００８】又、特開平２ー８２１０７号公報には、シ
ームレス缶を水平マンドレルに遊挿した状態において、
第１の接触子を該シームレス缶の胴部の内面に接触さ
せ、第１の接触子に対向して配置され上下動可能の第２
の接触子を該胴部の外面に接触させながら、第１の接触
子及び第２の接触子を該マンドレルの軸方向に、該缶体
の底部から開口端部に向かって移動させ、該移動に伴う
第２の接触子の上下動を電気的出力に変換し、該電気的
出力に基づいて該胴部の壁厚を連続測定する技術が開示
されている。Further, Japanese Patent Laid-Open No. 2-82107 discloses that a seamless can is loosely inserted in a horizontal mandrel.
The first contactor is brought into contact with the inner surface of the body of the seamless can, and the second contactor is arranged to face the first contactor and is vertically movable.
The first contactor and the second contactor are moved in the axial direction of the mandrel from the bottom of the can toward the open end while the contactor of the contactor is brought into contact with the outer surface of the body. There is disclosed a technique in which the vertical movement of the second contactor is converted into an electrical output, and the wall thickness of the body is continuously measured based on the electrical output.

【０００９】しかし、このように缶体を中空軸やマンド
レルに挿入しておいて缶胴壁厚を測定する技術では、そ
の機構上、ある特定の直径の缶以外の缶の測定ができな
いという共通の不利があり、又回転運動しない測定接触
子を缶壁部に押し付けた状態で軸線方向に移動させて測
定する場合には、缶壁部に傷がつき、ミクロンレベルの
測定値の信頼性が低くなる難点も避けられない。さらに
又缶体胴壁部は真円とは限らないので、缶をマンドレル
軸線方向に合わせて保持回転させ測定しようとする場
合、短径部分では接触子は缶内壁面に接触させられる
が、長径部分では缶内壁面から浮いてしまうことがあ
り、正確な測定値が得られない。そのため、缶体を押さ
える押さえロールとか押駒などの特別な用具が必要にな
ることも、不利益の一つである。However, in the technique of measuring the thickness of the can body wall by inserting the can body into the hollow shaft or the mandrel as described above, it is common that the cans other than the cans having a certain specific diameter cannot be measured due to its mechanism. In addition, when the measurement contact that does not rotate does not move in the axial direction while being pressed against the can wall, the can wall is scratched and the reliability of the measured value at the micron level is reduced. The difficulty of becoming low is inevitable. Furthermore, since the body wall of the can is not necessarily a perfect circle, when trying to hold and rotate the can in alignment with the mandrel axis direction, the contactor is brought into contact with the inner wall surface of the can at the short diameter part, but the long diameter In some parts, it may float from the inner wall surface of the can, and accurate measured values cannot be obtained. Therefore, it is one of the disadvantages that a special tool such as a pressing roll or a pressing piece for pressing the can body is required.

【００１０】その他、特開昭６４ー４１８０１号公報に
は、マンドレルや中空軸を用いるのをやめ、代って、缶
体を回転させて壁厚を測定する装置が開示されている。In addition, Japanese Patent Laid-Open No. 64-41801 discloses a device for measuring wall thickness by rotating a can body instead of using a mandrel or a hollow shaft.

【００１１】それは、フレームに、有底円筒状空缶の底
部を把持しかつ該空缶をその軸線回りに回転させるター
ンテーブルを設けるとともにアームを上記空缶の半径方
向へ移動可能に設け、上記アームに、アームの移動方向
に沿う空缶の半径方向へ移動自在に設けられ、接触子と
この接触子に対して接近離間可能になされるとともに接
触子側へ向けて付勢された測定子とによって上記空缶の
側板部を挟んでその厚さを測定する挟みゲージと、この
挟みゲージを上記接触子の付勢方向と逆方向へ付勢する
付勢手段と、上記挟みゲージのアームに対する相対位置
を測定する測定手段とを設け、さらに、上記挟みゲージ
が側板部に押されて移動してアームとの設定された相対
位置の範囲から逸説したときに上記測定手段の測定結果
に基づいて上記アームを上記相対位置の範囲内へ移動さ
せ、かつそのときの挟みゲージによる測定結果を読み込
む制御機構を備えた空缶の側板部厚さ検査装置を開示す
る。It comprises a frame provided with a turntable for holding the bottom of a bottomed cylindrical empty can and rotating the empty can about its axis, and an arm movably provided in the radial direction of the empty can. An arm is provided movably in the radial direction of the empty can along the moving direction of the arm, and a contact point and a contact point that can be moved toward and away from the contact point and are urged toward the contact point side. A pinch gauge for measuring the thickness by sandwiching the side plate part of the empty can, an urging means for urging the pinch gauge in a direction opposite to the urging direction of the contactor, and the pinch gauge relative to the arm. Based on the measurement result of the measuring means when the pinching gauge is pushed by the side plate portion and moved to make a mistake from the range of the set relative position with the arm. Above The arm is moved into the range of the relative position, and discloses a side plate portion thickness inspection device of an empty can with a control mechanism for reading the results measured by snap gauge at that time.

【００１２】ここでは、缶体はターンテーブルに正立、
保持され、缶体内週面に接する接触子と、それと対向し
缶体外周面に接する測定子とによってその壁厚が測定さ
れる。従って、缶径如何にかかわらず計測できる利点が
ある。Here, the can body is upright on the turntable,
The wall thickness is measured by the contactor which is held and is in contact with the inner surface of the can body and the contactor which is opposed to the contactor and is in contact with the outer peripheral surface of the can body. Therefore, there is an advantage that measurement can be performed regardless of the can diameter.

【００１３】しかし、マンドレルや中空軸は使用されな
いが、缶体は回転しながら、それ自体は回転運動をしな
い接触子と測定子とによって缶胴部を挟まれた状態で回
転もしくは、軸線方向に移動させられるため、依然缶壁
部に傷が付き、ミクロンレベルの測定値の信頼性が低い
という難点がある。However, although the mandrel or the hollow shaft is not used, the can body rotates, but the can body is sandwiched between the contactor and the measuring element which do not rotate by themselves, or rotate or move in the axial direction. Since it is moved, the can wall portion is still scratched, and the micron-level measurement value is unreliable.

【００１４】さらに、上記検査装置では、一個所での壁
厚測定が終わったら、所定角度だけ缶体を回転させ、缶
体が１回転する間に連続的に測定するようになってお
り、変形して真円状となっていない缶の壁厚を測定する
場合、缶を回転させると測定部分が半径方向に移動する
ことになるので、その対策として、特別な制御機構を設
けて半径方向の移動方向に追従させ、接触子（内側）と
測定面とに隙間が生じないようにしている。しかし、缶
体はその缶底が把持されているため、半径方法に移動し
た場合には、被測定壁が測定子と接触子の測定軸芯に対
して斜めにおかれることになり、直交しないため正確な
壁厚が測定できないという不利もある。Further, in the above-mentioned inspection apparatus, after the wall thickness measurement at one location is completed, the can body is rotated by a predetermined angle and continuously measured while the can body makes one revolution. When measuring the wall thickness of a can that is not a perfect circle, rotating the can causes the measurement part to move in the radial direction.As a countermeasure, a special control mechanism is provided to measure the radial direction. The movement direction is followed so that no gap is created between the contact (inside) and the measurement surface. However, since the bottom of the can is gripped, when moving to the radius method, the wall to be measured is placed at an angle to the measurement axis of the contact point and contact point, and is not orthogonal. Therefore, there is a disadvantage that an accurate wall thickness cannot be measured.

【００１５】[0015]

【問題を解決するための手段】本発明は、これら従来技
術にみられる不利益の解消を目的とし、測定者による測
定誤差がない、又缶の真円度のバラツキにも正しい測定
値が得られるようにしたものであり、次のような測定方
法及び装置を提供する。SUMMARY OF THE INVENTION The present invention aims to eliminate the disadvantages found in these prior arts, and there is no measurement error by the operator, and correct measurement values can be obtained even when the roundness of the cans varies. The following measuring method and apparatus are provided.

【００１６】缶体内周面と接触する固定された基準ピン
と、該基準ピンに対向して缶体外周面と接触し、該基準
ピンに向かって移動可能な測定子との間に缶体胴壁部を
挿入し、缶体を回転させ、所定の角度位置においてその
都度基準ピンと測定子とで缶体胴壁部を挟み、基準ピン
と測定子との間隔を電気的に測定する、絞りしごき缶の
缶胴測定方法において、横置された缶体の缶軸方向に、
缶体の開口縁壁部分と、この開口縁壁部分より所定軸長
さ缶底側に離れた缶胴側壁部の２カ所を基準ピンと測定
子とで挟み、挟んだ状態で缶体を横揺れさせ、その間連
続的に基準ピンと測定子との間隔を測定し、その測定値
の最小値を各々検出し、開口端壁厚と前記缶胴側壁厚と
を同時に検出することを特徴とする絞りしごき缶の缶胴
壁厚寸法測定方法。A can body barrel wall is provided between a fixed reference pin which is in contact with the inner surface of the can and a measuring element which is opposed to the reference pin and is in contact with the outer surface of the can and is movable toward the reference pin. Insert the part, rotate the can body, sandwich the can body wall with the reference pin and the probe each time at a predetermined angular position, and electrically measure the distance between the reference pin and the probe. In the can barrel measuring method, in the can axis direction of the can body placed horizontally,
The opening edge wall part of the can body and the can body side wall part that is a predetermined axial length away from the opening edge wall part to the can bottom side are sandwiched between the reference pin and the measuring element, and the can body is shaken in the sandwiched state. During that time, the distance between the reference pin and the contact point is continuously measured, the minimum value of the measured values is detected, and the aperture end wall thickness and the can body side wall thickness are simultaneously detected. Measuring method of can body wall thickness of cans.

【００１７】缶体外周面と接触する固定された基準ピン
と、該基準ピンに対向して缶体外周面と接触し、該基準
ピンに向かって移動可能な測定子とを有する測定手段
と、該基準ピンと測定子との間に挿入された缶体を所定
角度で複数回回動させて１回転させる回転手段とを有
し、所定角度位置におかれた缶体について、その都度基
準ピンと測定子とで缶胴壁部を挟持し、基準ピンと測定
子との間隔を電気的に測定する、絞りしごき缶胴壁厚寸
法測定装置において、横置された缶体内部に入り込む部
分であって、缶内周面の開口縁壁部分と該開口縁壁部分
より所定軸長さ缶底側に離れた缶胴側壁部とに夫々接触
する第１基準ピン、第２基準ピンが固装されている、下
アゴ部分と、該下アゴ部分と平行に缶体外側缶軸方向に
延びる部分であって、前記第１，２基準ピンと対向して
缶外周面に接触し、該基準ピンに向かって上下動可能な
第１，２測定子を有し、第１基準ピンと第１測定子の間
隔を検出する第１測定器と、第２基準ピンと第２測定子
の間隔を検出する第２測定器とがそれぞれ装着されてい
る、上アゴ部分とを有する、軸断面コ字形の支持部材
と、該基準ピンと該測定子とによって挟持されている横
置缶体の長手軸心より上方で缶体外周面に接触する一対
のピンを対向端部に有する部材を、缶軸と直交する方向
に水平動させて、前記ピンを交互に缶体に接触させる振
り子構造を備えた缶体揺動機構と、缶体を横置支持する
回転体を備え、該缶体を前記下アゴ部分に挿入或いは下
アゴ部分から離脱させる水平走行・上下動可能な移動台
と、該回転体を回動させて缶体を所定角度回転させる手
段とを有する缶体移動・回転機構と、缶体揺動中、第
１，２測定器で計測したそれぞれの壁厚最小値を取り出
し、予め定めた基準値と比較判別し、その結果を外部出
力する制御機構とを備えたことを特徴とする絞りしごき
缶の缶胴壁厚寸法測定装置。Measuring means having a fixed reference pin in contact with the outer peripheral surface of the can body and a measuring element facing the reference pin and in contact with the outer peripheral surface of the can body and movable toward the reference pin; A can body inserted between the reference pin and the probe, and rotating the can body a plurality of times at a predetermined angle to make one rotation. For the can body placed at a predetermined angle position, the reference pin and the probe are provided each time. In the squeezing and ironing can body wall thickness measuring device that sandwiches the can body wall with and electrically measures the distance between the reference pin and the contact point, the part that enters into the horizontally placed can body, A first reference pin and a second reference pin, which come into contact with an opening edge wall portion of the peripheral surface and a can body side wall portion separated from the opening edge wall portion by a predetermined axial length toward the can bottom side, are fixed. A jaw portion and a portion extending in the can axis direction outside the can body in parallel with the lower jaw portion, It has first and second measuring elements which are in contact with the outer peripheral surface of the can facing the first and second reference pins and can move up and down toward the reference pin, and detects the distance between the first reference pin and the first measuring element. A support member having an upper jaw portion, to which a first measuring device and a second measuring device for detecting a distance between the second reference pin and the second measuring element are respectively mounted, and a reference member having the U-shaped cross section. By horizontally moving a member having a pair of pins at the opposite ends, which are in contact with the outer peripheral surface of the can body above the longitudinal axis of the horizontally placed can body sandwiched by the measuring element, in the direction orthogonal to the can axis. A can body swinging mechanism having a pendulum structure for alternately contacting the pins with the can body, and a rotating body for laterally supporting the can body. The can body is inserted into the lower jaw portion or from the lower jaw portion. A movable base that can be horizontally moved and vertically moved to be disengaged, and the can body is rotated at a predetermined angle by rotating the rotating body. The can body moving / rotating mechanism having a means for rotating the can body and the can body body swinging, each wall thickness minimum value measured by the first and second measuring instruments is taken out, compared with a predetermined reference value, and the result is determined. A device for measuring the thickness of a can body wall of a drawn and squeezed can, comprising a control mechanism for externally outputting.

【００１８】なお、該下アゴ部分が缶長にくらべ短い場
合にも、対応できるようにするため、さらに、該下アゴ
部分の下面側と缶内周面の間で上下動する缶押さえレバ
ーを有し、缶内周面を下方に向かって押し付け支持し、
缶胴壁部が各基準ピンと各測定子とで挟持された後、そ
の押し付け力を解放する缶体支持機構を備えることがで
きる。In order to cope with the case where the lower jaw portion is shorter than the can length, a can pressing lever which moves up and down between the lower surface of the lower jaw portion and the inner peripheral surface of the can is further provided. Having, pressing and supporting the inner peripheral surface of the can downward,
It is possible to provide a can body support mechanism that releases the pressing force after the can body wall is clamped by each reference pin and each probe.

【００１９】[0019]

【実施例】以下、図面を参照して本発明の実施例を説明
する。Embodiments of the present invention will be described below with reference to the drawings.

【００２０】まず、装置について述べる。図１は本例装
置全体の正面図、図２はその平面図、図３は左側面図、
図４は図２のＩＶーＩＶ線に沿う一部省略断面正面図、
図５は揺動機構部を右側面から見た動作説明図、図６は
絞りしごき缶の一例の断面図である。First, the apparatus will be described. 1 is a front view of the entire apparatus of this example, FIG. 2 is a plan view thereof, FIG. 3 is a left side view,
4 is a partially omitted sectional front view taken along the line IV-IV in FIG.
FIG. 5 is an operation explanatory view of the swinging mechanism as viewed from the right side, and FIG. 6 is a cross-sectional view of an example of the squeezing and ironing can.

【００２１】被測定缶体Ｐは、図６を参照して、開口部
を有する胴壁部Ｐ１と、開口部側に向かって凹んだドー
ム状の底部Ｐ２とで成る。さらに胴壁部Ｐ１は、フラン
ジが形成される開口縁壁部分Ｙ（開口端から約４ｍｍま
での部分で胴壁部で最大の肉厚ｔ１を有する）と、該縁
壁部分の下端から該底部までの、Ｙより薄肉の側壁部分
Ｚ（肉厚ｔ２は最も薄肉となっている）とから成る。な
お、この缶体Ｐの開口端はトリミングされたものであ
る。Referring to FIG. 6, the measured can body P is composed of a body wall portion P1 having an opening portion and a dome-shaped bottom portion P2 which is recessed toward the opening portion side. Further, the body wall portion P1 includes an opening edge wall portion Y (having a maximum wall thickness t1 in the body wall portion in a portion up to about 4 mm from the opening end) where a flange is formed, and a lower end of the edge wall portion to the bottom portion. Up to Y, the side wall portion Z is thinner than Y (thickness t2 is the thinnest). The open end of the can body P is trimmed.

【００２２】図１に示すように、本装置は大きく分け
て、箱形の基台１の天板１ｂ上に固定され、缶体Ｐの胴
壁部の厚みｔ１，ｔ２を同時測定するための測定部Ａ
と、基台１の底板１ａに設けられ、測定部Ａまで缶体Ｐ
を移動させ、また、缶体Ｐを所定角度回転させるための
可動部を有する移動・回転機構部Ｂと、該機構部Ｂの作
動を害さない個所で該測定部Ａに固定配置され、測定時
に缶体を揺動させるための揺動機構部Ｃとから構成され
る。なお、天板１ｂ中央部にはその全長のほぼ２／３に
亘って、上記機構部Ｂの可動部が移動するための細長い
抜け孔１ｄ（図２）が穿たれており、その孔１ｄの一端
近傍に測定部Ａが配置されている。As shown in FIG. 1, this apparatus is roughly divided and fixed on a top plate 1b of a box-shaped base 1 for simultaneously measuring the thicknesses t1 and t2 of the body wall of the can P. Measuring unit A
And a can body P provided on the bottom plate 1a of the base 1 up to the measurement unit A
And a moving / rotating mechanism part B having a movable part for moving the can body P by a predetermined angle, and fixedly arranged on the measuring part A at a position where the operation of the mechanical part B is not impaired. It is composed of a rocking mechanism portion C for rocking the can body. It should be noted that an elongated through hole 1d (FIG. 2) for moving the movable portion of the mechanical portion B is formed in the central portion of the top plate 1b over approximately ⅔ of its entire length. The measurement unit A is arranged near one end.

【００２３】まず、移動・回転機構部Ｂについて説明す
る。図中２は、基台１の天板１ｂに穿たれた前記抜け孔
１ｄの直下方に、該孔１ｄに沿って配設されたロッドレ
スシリンダーであり、底板１ａ上に固定された一対のス
ペーサー１ｃ、１ｃ上に取り付けられている。First, the moving / rotating mechanism B will be described. Reference numeral 2 in the figure denotes a rodless cylinder which is arranged immediately below the through hole 1d formed in the top plate 1b of the base 1 along the hole 1d, and is a pair of a pair fixed on the bottom plate 1a. It is mounted on the spacers 1c, 1c.

【００２４】２ａはロッドレスシリンダー２のスライダ
ーであって、該抜け孔１ｄに沿い水平移動する。このス
ライダー２ａの上面には、ベース２ｂが取り付けられて
いる。Reference numeral 2a is a slider of the rodless cylinder 2, which horizontally moves along the through hole 1d. A base 2b is attached to the upper surface of the slider 2a.

【００２５】このベース２ｂの上には、そのほぼ中央部
にエアシリンダー３が立設され、その先端は、次に述べ
る移動台５の底面に連結されている。このエアシリンダ
ー３の伸縮により、移動台５は、前記抜け孔１ｄ内で垂
直に昇降する。移動台５は、亦、シリンダー２のスライ
ダー２ａの作動に応じて、該抜け孔１ｄ内を水平移動す
る。なお３ａは、昇降する移動台５を案内するガイドポ
スト組立体でベース２ｂと移動台５の間に２組取り付け
られている。An air cylinder 3 is erected on the base 2b at substantially the center thereof, and the tip of the air cylinder 3 is connected to the bottom surface of a moving table 5 described below. Due to the expansion and contraction of the air cylinder 3, the movable table 5 vertically moves up and down within the through hole 1d. The moving table 5 also horizontally moves in the through hole 1d according to the operation of the slider 2a of the cylinder 2. In addition, 3a is a guide post assembly for guiding the moving table 5 which moves up and down, and two sets are attached between the base 2b and the moving table 5.

【００２６】移動台５は、図１，２，３を総合して理解
されるように、大よそ、平面Ｉ形（図２）、側面Ｖ形
（図３）の形態を有し、両側縁部は夫々、その中央部
が、缶形に合うよう湾曲して凹み、そこから左右斜上方
に突出るアーム部５１，５２；５１′，５２′を有し、
これら両側縁部をつなぐ底部５３が、前記エアシリンダ
ー３によって支承される。As can be understood by comprehensively referring to FIGS. 1, 2 and 3, the movable table 5 has a plane I shape (FIG. 2) and a side surface V shape (FIG. 3), and has both side edges. Each of the parts has an arm part 51, 52; 51 ', 52' whose central part is curved and recessed so as to fit a can shape, and protrudes obliquely upward and to the left and right from there.
A bottom portion 53 connecting the both side edge portions is supported by the air cylinder 3.

【００２７】４は、缶体Ｐを回転させるための回転ロー
ラで、移動台５の両側縁部の対向するアーム部５１，５
１′と５２，５２′との間に並列に回転可能に取り付け
られている。なお、本例では回転ローラ４の回転軸４ａ
は移動台５の一方のアーム部５１′，５２′を右方（正
面からみて）に突き抜け、その軸端にプーリ４ｂが固着
されている。なお、該アーム部５１′，５２′側におい
て、底部５３から下方に延びる下側側壁５ａがあり、こ
の側壁５ａにパルスモータ２２が固設され、該モータ２
２の駆動軸２２ａがこの側壁５ａを前記回転軸４ａと同
一方向に突き抜け、その軸端にプーリ２２ｂが固着され
ている。プーリ４ｂ，４ｂ，２２ｂにベルト２３が掛け
回され、パルスモータ２２の駆動で回転ローラ４，４が
同一方向に回転する。Reference numeral 4 denotes a rotating roller for rotating the can body P, and arm portions 51, 5 facing each other on both side edge portions of the moving table 5.
It is rotatably mounted in parallel between 1'and 52,52 '. In this example, the rotary shaft 4a of the rotary roller 4 is
Has one arm portion 51 ', 52' of the movable table 5 penetrating rightward (as viewed from the front), and a pulley 4b is fixed to its shaft end. On the side of the arms 51 'and 52', there is a lower side wall 5a extending downward from the bottom 53, and the pulse motor 22 is fixedly mounted on the side wall 5a.
The second drive shaft 22a penetrates the side wall 5a in the same direction as the rotary shaft 4a, and the pulley 22b is fixed to the shaft end. The belt 23 is wound around the pulleys 4b, 4b, 22b, and the rotation of the rotation rollers 4, 4 is driven in the same direction by driving the pulse motor 22.

【００２８】６は、回転ローラ４上に載置される缶体Ｐ
の底部Ｐ２に向かって空気を噴出するエアーノズルで、
移動台５の底部５３に続き、その左側（正面からみて）
のアーム部５１，５２から左方に延びるＬ字形ブラケッ
ト６ａの先端部分に取り付けられている。Reference numeral 6 denotes a can body P placed on the rotary roller 4.
With an air nozzle that ejects air toward the bottom P2 of
Continuing from the bottom 53 of the mobile table 5, its left side (when viewed from the front)
It is attached to the tip portion of an L-shaped bracket 6a extending leftward from the arm portions 51 and 52.

【００２９】次に、測定部Ａについて説明する。２７
は、基台１の天板１ｂ上面の抜け孔１ｄの延長線上で、
該孔近傍に固定された支柱部。２５は支柱部２７に固着
され、該孔１ｄに臨ませ、その上方に張り出した支持部
材で、その左側部分（正面からみて）はコ字状をなし、
上アゴ部分２５ａ（上方の張出部）と、下アゴ部分２５
ｂ（下方の張出部）とが水平方向に延びている。なお、
下アゴ部分２５ｂは測定時に缶体内に挿入される部分で
あり、そのため図３に示すように、缶体Ｐの内部に挿入
可能な断面形状（本例では山形で、缶体の半径よりやや
低い高さを持つ）を有する。Next, the measuring section A will be described. 27
Is on the extension line of the through hole 1d on the top plate 1b of the base 1,
A column portion fixed near the hole. Reference numeral 25 denotes a support member fixed to the column portion 27, facing the hole 1d, and projecting upward from the hole 1d. The left side portion (when viewed from the front) has a U-shape,
The upper jaw portion 25a (the upper protruding portion) and the lower jaw portion 25
b (downward protrusion) extends in the horizontal direction. In addition,
The lower jaw portion 25b is a portion that is inserted into the can body at the time of measurement, and therefore, as shown in FIG. 3, a cross-sectional shape that can be inserted inside the can body P (a mountain shape in this example, which is slightly lower than the radius of the can body). Have height).

【００３０】支持部材２５の両側面にはシリンダー２
４，２４がロッド先端を左（正面からみて）に向けて固
定され、そのロッド先端にストッパー７，７が取り付け
られている。これはエアーノズル６からの空気噴出を受
けて右方に押されて来る缶体Ｐの開口端と当接して、缶
体Ｐを所定位置に位置決めさせるためのものである。The cylinder 2 is provided on both sides of the support member 25.
4, 24 are fixed with the rod tips facing left (when viewed from the front), and stoppers 7, 7 are attached to the rod tips. This is for positioning the can body P at a predetermined position by coming into contact with the open end of the can body P that is pushed rightward in response to the ejection of air from the air nozzle 6.

【００３１】測定部Ａについて、図２のＩＶーＩＶ線に
沿う断面図である図４を用いて更に説明すると、下アゴ
部分２５ｂに、第１基準ピン１１、第２基準ピン１１′
がピン先端を下アゴ部分２５ｂの上面から僅かに突出さ
せて装着されている。これらの基準ピンに対して、上ア
ゴ部分２５ａには、デジタルゲージ８．８′が垂直下向
きに設けられ、デジタルゲージ８，８′の第１測定子１
０と第２測定子１０′が夫々第１，２基準ピン１１′と
軸心を一致させて、対向配置されている。第１基準ピン
１１の装着位置は缶体Ｐの縁壁部分の肉厚ｔ１が測定で
きるように、ストッパー７から第１基準ピン１１までの
距離Ｌ１を胴壁部のＹ部分の長さの範囲内（本例では３
ｍｍ）に設定し、かつ、第１基準ピン１１から第２基準
ピン１１′迄の距離Ｌ２を、厚肉部分から薄肉部分への
遷移領域を越えたＺ部分の長さの範囲内（本例では、缶
高７２ｍｍの１８０ｍ１缶から缶高１６７ｍｍの５００
ｍｌ缶までの種々の缶高の缶体を共通して測定できるよ
うに４０ｍｍ）に設定する。The measuring section A will be further described with reference to FIG. 4 which is a sectional view taken along the line IV-IV in FIG. 2. The first reference pin 11 and the second reference pin 11 'are provided on the lower jaw portion 25b.
Is attached with the tip of the pin slightly protruding from the upper surface of the lower jaw portion 25b. A digital gauge 8.8 'is provided vertically downward on the upper jaw portion 25a with respect to these reference pins, and the first gauge head 1 of the digital gauge 8, 8'is provided.
0 and the second tracing stylus 10 'are arranged opposite to each other with their axes aligned with the first and second reference pins 11', respectively. As for the mounting position of the first reference pin 11, the distance L1 from the stopper 7 to the first reference pin 11 is set to the range of the length of the Y portion of the body wall portion so that the wall thickness t1 of the edge wall portion of the can P can be measured. Within (3 in this example)
mm) and the distance L2 from the first reference pin 11 to the second reference pin 11 'is within the range of the Z portion beyond the transition region from the thick portion to the thin portion (this example). Then, from a 180m1 can with a can height of 72mm to a 500 with a can height of 167mm.
It is set to 40 mm) so that can bodies with various can heights up to ml can can be commonly measured.

【００３２】９はデジタルゲージ８，８′の間で、上ア
ゴ部分２５ａに垂直下向きに設けられたエアーシリンダ
ーで、上アゴ部分２５ａを貫通して延びるシリンダーロ
ッドの先端には鍔部９ａがあり、両隣の測定子１０，１
０′に取り付けられた鍔部１０ａ，１０′ａと係合し、
測定子１０，１０′を上、下方向に駆動させる。An air cylinder 9 is provided vertically downward in the upper jaw portion 25a between the digital gauges 8 and 8 ', and a flange portion 9a is provided at the tip of a cylinder rod extending through the upper jaw portion 25a. , Measuring elements 10, 1 on both sides
Engages with the collar portions 10a and 10'a attached to 0 ',
The tracing stylus 10, 10 'is driven upward and downward.

【００３３】１２は、下アゴ部分２５ｂが缶体Ｐ内に挿
入されたとき、該部分２５ｂの下面と缶体Ｐの内周面の
間にあって、缶体Ｐを両基準ピン１１，１１′上にセッ
トするため、缶体の内周面を下方に向かって押し付ける
ように上下動可能な自由落下式の缶押さえレバーであ
る。此の缶押さえレバー１２は、下アゴ部分２５ｂを含
む支持部材２５の下面に沿って水平に延び且つ先端に球
状部分を持つ水平レバー１２ａと、支持部材２５を上下
に貫通する貫通穴２５ｃ内を移動する垂直レバー１２ｂ
とで構成され、水平レバー１２ａは垂直レバー１２ｂの
下端に固定されている。なお、水平レバー１２ａの先端
球状部分は、両基準ピン１１，１１′間に位置する。支
持部材２５の上面に取り付けたブラケット２５ｄに、エ
アーシリンダー１３がロッド先端を貫通穴２５ｃに向か
って下向きに固定されている。そのロッド下端には中間
軸１２ｃの一端がねじ込まれ、他端には垂直レバー１２
ｂを吊り上げるためのピン１２ｄが固定されている。When the lower jaw portion 25b is inserted into the can body P, 12 is located between the lower surface of the portion 25b and the inner peripheral surface of the can body P so that the can body P is placed on both reference pins 11, 11 '. Is a free fall type can pressing lever that can be moved up and down so as to press the inner peripheral surface of the can body downward. The can holding lever 12 extends horizontally along the lower surface of the support member 25 including the lower jaw portion 25b and has a spherical portion at the tip, and a through hole 25c that vertically penetrates the support member 25. Vertical lever 12b to move
The horizontal lever 12a is fixed to the lower end of the vertical lever 12b. The tip spherical portion of the horizontal lever 12a is located between the reference pins 11 and 11 '. The air cylinder 13 is fixed to the bracket 25d attached to the upper surface of the support member 25 with the tip of the rod directed downward toward the through hole 25c. One end of the intermediate shaft 12c is screwed into the lower end of the rod, and the vertical lever 12 is attached to the other end.
A pin 12d for lifting b is fixed.

【００３４】垂直レバー１２ｂがエアーシリンダー１３
の駆動で上下動する際に、水平レバー１２ａを缶軸方向
に向かせるためのガイド板２５ｅが支持部材２５の下面
に水平レバー１２ａを挟むように２個所設けられてい
る。The vertical lever 12b is the air cylinder 13
Two guide plates 25e are provided on the lower surface of the support member 25 so as to sandwich the horizontal lever 12a on the lower surface of the support member 25 so as to orient the horizontal lever 12a in the can axis direction when the vertical lever is driven up and down.

【００３５】次に、揺動機構部Ｃについて説明する。２
８は支持部材２５の右側壁（正面からみて）に固定され
た垂直板で、揺動機構部Ｃ全体を支持する。２９は該垂
直板２８の右側面に取り付けられた平面下向きコの字形
のモータブラケットであり、これにモータ１４が固定さ
れる。モータ１４の出力軸１４ａは、コの字形をしてい
るこのモータブラケット２９の内部空間内に突出し、こ
の軸１４ａに、丸形の回転駒２１が固定されている。回
転駒２１の周面にはセンサードック２１ａが設けられ、
また、出力軸１４ａと芯を隔てた位置に偏芯軸２１ｂが
設けられている。一方、モータブラケット２９にセンサ
ードック２１ａを検出し、結果的に該モータ出力軸１４
ａの回転を検出する近接センサー２０が取り付けられて
いる。Next, the swing mechanism C will be described. Two
Reference numeral 8 denotes a vertical plate fixed to the right side wall (as viewed from the front) of the support member 25, which supports the entire swing mechanism section C. Reference numeral 29 denotes a U-shaped motor bracket which is attached to the right side surface of the vertical plate 28 and faces downward. The motor 14 is fixed to the bracket. The output shaft 14a of the motor 14 projects into the internal space of the U-shaped motor bracket 29, and the round rotary piece 21 is fixed to the shaft 14a. A sensor dock 21a is provided on the peripheral surface of the rotating piece 21,
An eccentric shaft 21b is provided at a position separated from the output shaft 14a by a core. On the other hand, the sensor dock 21a is detected on the motor bracket 29, and as a result, the motor output shaft 14
A proximity sensor 20 that detects the rotation of a is attached.

【００３６】１６は、モータブラケット２９より上方で
垂直板２８に取り付けられた固定ピン１５を支点として
振子運動する振子レバーであり（図５）、この振子レバ
ー１６には回転駒２１の偏芯軸２１ｂと係合する長穴１
６ａが形成されている。一方、図１を参照して、モータ
ブラケット２９より下方で垂直板２８にリニアスライダ
ー１７が取り付けられており、１８はこのスライダー１
７を介して水平方向（図５。なお図１でみれば紙面に直
角方向となる）に直線往復運動する側面コ字状レバー
（図５）である。該レバー１８にはピン１８ａが立設さ
れており（図４、図５）、前記振子レバー１６の長穴１
６ａは、このピン１８ａとも係合する。従って、回転駒
２１の回転により生ずる振子レバー１６の揺動運動は、
コ字状レバー１８の往復運動に変換される機構となって
いる。Numeral 16 is a pendulum lever which makes a pendulum motion with the fixed pin 15 mounted on the vertical plate 28 above the motor bracket 29 as a fulcrum (FIG. 5). Slot 1 engaging with 21b
6a is formed. On the other hand, referring to FIG. 1, the linear slider 17 is attached to the vertical plate 28 below the motor bracket 29, and 18 is the slider 1
The lever is a lateral U-shaped lever (FIG. 5) that linearly reciprocates through the horizontal direction (FIG. 5, which is the direction perpendicular to the paper surface when viewed in FIG. 1) via 7. A pin 18a is erected on the lever 18 (FIGS. 4 and 5), and the elongated hole 1 of the pendulum lever 16 is provided.
6a also engages with this pin 18a. Therefore, the swinging motion of the pendulum lever 16 caused by the rotation of the rotating piece 21 is
It is a mechanism that is converted into reciprocating motion of the U-shaped lever 18.

【００３７】さらに、図１、図２に示すように、コ字状
レバー１８の両下端部には、下アゴ部分２５ｂに沿い、
回転ローラ４，４の長手方向に平行に延びる一対のアー
ム１９，１９の一端が固定され、該アームの、缶軸方向
に延びた先端には、互いに向き合う揺動ピン２６，２６
が取り付けられている。Further, as shown in FIGS. 1 and 2, at both lower ends of the U-shaped lever 18, along the lower jaw portion 25b,
One ends of a pair of arms 19, 19 extending parallel to the longitudinal direction of the rotating rollers 4, 4 are fixed, and swing pins 26, 26 facing each other are provided at the tips of the arms extending in the can axis direction.
Is attached.

【００３８】而して、これらピン２６，２６の間隔は缶
体Ｐの直径よりは大きく、又その作用線の高さは、支持
部材２５の下アゴ部分２５ｂが缶体Ｐ内に挿入されたあ
とは、つねに基準ピン１１，１１′が缶体内周面に接触
しているようにするため、基準ピンの先端よりは下方で
あるが、缶長手軸心よりは上方にあるように定める。The distance between the pins 26, 26 is larger than the diameter of the can body P, and the height of the line of action is such that the lower jaw portion 25b of the support member 25 is inserted into the can body P. After that, in order that the reference pins 11 and 11 'are always in contact with the inner surface of the can body, the reference pins 11 and 11' are located below the tip of the reference pin but above the longitudinal axis of the can.

【００３９】かくして、レバー１８の往復運動により揺
動ピン２６，２６が缶外周面を交互に押し、押された缶
体Ｐは、測定子１０，１０′と基準ピン１１，１１′の
２ケ所で挟まれた状態で、その２点を支点として、左右
揺動運動を行う。Thus, the reciprocating motion of the lever 18 causes the swinging pins 26, 26 to alternately press the outer peripheral surface of the can, and the pressed can body P has two positions, the probe 10, 10 'and the reference pin 11, 11'. In the state of being sandwiched between, the left and right oscillating motions are performed with the two points as fulcrums.

【００４０】次にこの装置によって缶胴壁厚を測定する
手順を説明する。測定開始前、図１、図２において、ロ
ッドレスシリンダー２のスライダー２ａ、従ってその上
部構造である移動台５、エアノズル６は左側位置にあ
り、エアーシリンダー９のロッドは上側位置にあり、エ
アーシリンダー２４のロッドは左側位置にあって、夫々
待機状態をなす。Next, the procedure for measuring the can body wall thickness with this apparatus will be described. Before starting the measurement, in FIGS. 1 and 2, the slider 2a of the rodless cylinder 2, and hence the upper moving table 5 and the air nozzle 6 are at the left side position, and the rod of the air cylinder 9 is at the upper side position. The rods 24 are located on the left side and are in a standby state.

【００４１】この状態にある本装置の回転ローラ４に検
査しようとする缶体Ｐを缶底をエアーノズル６側に向け
て横置し、操作盤のスタートスイッチ（図示せず）を押
し下げる。そうすると本装置を制御する電気回路に電気
的測定開始信号が送られ、次の諸動作が開始される。The can body P to be inspected is placed sideways with the can bottom facing the air nozzle 6 side on the rotary roller 4 of this apparatus in this state, and the start switch (not shown) of the operation panel is pushed down. Then, an electric measurement start signal is sent to the electric circuit that controls this apparatus, and the following operations are started.

【００４２】ロッドレスシリンダー２のスライダー２ａ
が右側へ駆動され、回転ローラ４上にある缶体Ｐが、支
持部材２５のところまで運ばれ、該部材の下アゴ部分２
５ｂと缶押さえレバーの水平レバー１２ａが缶体内に入
り込む。この場合、予めエアシリンダー３のロッドを調
節して、下アゴ部分２５ｂの位置に合わせて、缶体Ｐの
高さを調整することは勿論である。Slider 2a of rodless cylinder 2
Is driven to the right, the can body P on the rotating roller 4 is conveyed to the support member 25, and the lower jaw portion 2 of the member is conveyed.
5b and the horizontal lever 12a of the can pressing lever enter the inside of the can. In this case, it goes without saying that the height of the can body P is adjusted according to the position of the lower jaw portion 25b by adjusting the rod of the air cylinder 3 in advance.

【００４３】次にエアーノズル６からエアーを噴射し、
缶底部にエアー圧を加えて開口端部（トリムエッジ）を
ストッパー７に押し当てる。続いてエアーシリンダー１
３を下方に駆動し、缶押さえ水平レバー１２ａを缶内周
に押し付ける。そのあと、エアシリンダー３が下側位置
に駆動され、回転ローラ４が下側に下がる。それにつれ
て缶体Ｐも下降し、缶内周が基準ピン１１、１１′に乗
った時点で、缶体はローラから離れ、缶体の下降が終わ
る。次いでエアシリンダー９が下側に駆動され、デジタ
ルゲージ８、８′の測定子１０、１０′が下がり、基準
ピン１１、１１′と該測定子１０、１０′とで缶体Ｐの
開口縁壁部とこれより壁厚が薄い缶胴側壁部の二箇所を
挟み込む。そのあとエアシリンダー２４が右側へ駆動さ
れ、ストッパー７が缶体から離れる。又エアシリンダー
１３が上方へ駆動されて缶押さえレバー１２が上側へ移
動し、水平レバー１２ａが缶体内周面から離れる。この
時点で、缶体Ｐに接触しているのは基準ピン１１、１
１′と測定子１０、１０′のみとなる。Next, air is jetted from the air nozzle 6,
Air pressure is applied to the bottom of the can to press the opening end (trim edge) against the stopper 7. Then air cylinder 1
3 is driven downward and the can pressing horizontal lever 12a is pressed against the inner circumference of the can. After that, the air cylinder 3 is driven to the lower position, and the rotating roller 4 moves downward. Along with this, the can body P also descends, and when the inner circumference of the can rides on the reference pins 11 and 11 ', the can body separates from the roller, and the can body descends. Next, the air cylinder 9 is driven downward, the measuring elements 10, 10 'of the digital gauges 8, 8'lower, and the reference pin 11, 11' and the measuring elements 10, 10 'cause the opening edge wall of the can body P. Part and the side wall of the can body, which is thinner than this part, are sandwiched. After that, the air cylinder 24 is driven to the right, and the stopper 7 separates from the can body. Further, the air cylinder 13 is driven upward, the can pressing lever 12 moves upward, and the horizontal lever 12a separates from the peripheral surface of the can body. At this time, the reference pins 11 and 1 are in contact with the can body P.
Only 1'and the measuring elements 10, 10 '.

【００４４】次にモータ１４が回転を始め、図５に示す
ように、固定ピン１５を支点とした回転揺動運動を振子
レバー１６に与え、該レバーはリニアスライダー１７を
介してその回転揺動運動を直線往復運動に変換してコ字
状レバー１８に伝える。さらにレバー１８は同運動を、
該レバーに固設され、缶体Ｐの両側を缶底側に延びるア
ーム１９、１９に伝え、該アーム先端に取り付けられた
揺動ピン２６が缶の外周面を缶軸中心方向に押す。Next, the motor 14 starts to rotate, and as shown in FIG. 5, the pendulum lever 16 is provided with a rotational oscillating motion with the fixed pin 15 as a fulcrum, which lever oscillates through the linear slider 17. The motion is converted into a linear reciprocating motion and transmitted to the U-shaped lever 18. Furthermore, the lever 18
The arms P are fixed to the lever, and both sides of the can body P are transmitted to arms 19 extending to the bottom side of the can, and a swing pin 26 attached to the tip of the arm pushes the outer peripheral surface of the can toward the center of the can axis.

【００４５】モータ１４は、該モータ出力軸１４ａに取
り付けられている回転駒２１を回転させ、センサードッ
ク２１ａを検出する近接センサー２０の電気信号によ
り、１回転して停止するように制御される。即ち、回転
駒２１に固定された偏芯軸２１ｂと振子レバー１６の長
孔１６ａとが係合し、更に長孔１６ａとコ字状レバー１
８に固定されたピン１８ａとが係合しているから、回転
駒２１の回転によりレバー１６は固定ピン１５を支点と
する揺動運動を行うことになる。その結果、モーター１
４の１回転で１回の直線往復運動が揺動ピン２６に支え
られ、揺動ピン２６によって左右から交互に押された缶
体は、基準ピン１１、１１′と測定子１０、１０′はさ
まれた点を支点として回転揺動運動をなし、その間デジ
タルゲージ８、８′で基準ピン１１と測定子１０及び基
準ピン１１′と測定子１０′間の距離を各々連続的に測
長する。その連続的に取り込まれた測定値は判別装置
（図示せず）により順次大小比較され、モーター１４が
１回転した時の各々の最小値を缶体ＰのＹ部及びＺ部
（図６）の肉厚として、コンピューター（図示せず）に
外部出力する。The motor 14 is controlled to rotate the rotating piece 21 attached to the motor output shaft 14a, and to make one rotation and stop by the electric signal of the proximity sensor 20 which detects the sensor dock 21a. That is, the eccentric shaft 21b fixed to the rotating piece 21 and the elongated hole 16a of the pendulum lever 16 are engaged with each other, and the elongated hole 16a and the U-shaped lever 1 are further engaged.
Since the pin 18a fixed to the lever 8 is engaged, the rotation of the rotary piece 21 causes the lever 16 to perform a swinging motion with the fixed pin 15 as a fulcrum. As a result, the motor 1
A single reciprocating motion of one rotation of 4 is supported by the rocking pin 26, and the can body pushed alternately by the rocking pin 26 from the left and right has the reference pins 11 and 11 'and the contact points 10 and 10'. A rotary swing motion is performed with the sandwiched point as a fulcrum, during which the distance between the reference pin 11 and the probe 10 and the distance between the reference pin 11 'and the probe 10' is continuously measured by the digital gauges 8 and 8 '. .. The continuously taken measurement values are compared in size by a discriminating device (not shown), and the minimum value when the motor 14 makes one rotation is determined by the Y portion and the Z portion (FIG. 6) of the can P. The thickness is externally output to a computer (not shown).

【００４６】このようにして第１回の測定が終ったな
ら、エアシリンダー１３を下側へ駆動し、再び缶押さえ
水平レバー１２ａを缶体内周面に接触させる。このよう
にしておいてから、エアシリンダー２４を左側位置に駆
動し、ストッパー７を缶のトリムエッジに接触させる。
次いで、エアシリンダー９を上側位置に駆動し、測定子
１０、１０′を上側へ移動させる。それと共に、回転ロ
ーラ４を上昇させ、再び該ローラの上に缶体Ｐを乗せ、
基準ピン１１、１１′を缶体内周面から離す。その間に
エアシリンダー１３を上側位置に駆動し、缶押さえレバ
ー１２ａを缶体から離し、缶体の拘束をなくす。When the first measurement is completed in this way, the air cylinder 13 is driven downward, and the can pressing horizontal lever 12a is again brought into contact with the inner surface of the can body. After this, the air cylinder 24 is driven to the left position and the stopper 7 is brought into contact with the trim edge of the can.
Next, the air cylinder 9 is driven to the upper position, and the tracing styluses 10 and 10 'are moved upward. At the same time, the rotary roller 4 is raised, and the can body P is placed on the roller again.
The reference pins 11 and 11 'are separated from the inner surface of the can body. Meanwhile, the air cylinder 13 is driven to the upper position, and the can pressing lever 12a is separated from the can body, so that the can body is not restrained.

【００４７】なお、上記過程において、下アゴ部分の長
さが缶長にくらべて短かすぎると、エアシリンダー９が
上側位置へ駆動され、測定子１０、１０′が上側へ移動
したとき、缶体が缶底の重量で基準ピン１１′を支点と
して回転ロール４側へ傾斜して、ついには支持部材２５
から脱落するに至る惧れを生ずるが、それに先立って、
缶押さえレバー１２ａで缶体を押さえておくので、その
ような事態の発生は避けらる。In the above process, if the length of the lower jaw is too short compared to the length of the can, the air cylinder 9 is driven to the upper position, and when the measuring heads 10 and 10 'move to the upper side, The body tilts toward the rotating roll 4 side with the weight of the can bottom about the reference pin 11 'as a fulcrum, and finally the supporting member 25
There is a fear of falling out of the
Since the can body is held by the can holding lever 12a, such a situation can be avoided.

【００４８】モーター２２が缶体Ｐを回転させるべく、
回転ローラ４を予め設定されたパルス数をもって回転す
る。パルス数は缶体の外径に合せて数種類、予め設定さ
れており、本装置に具備された制御回路に電気的信号で
缶体外径を入力することにより、制御回路でその外径に
適合するパルス数を選択し、パルスモーター２２に送ら
れる。パルスモータの回転はベルト２３を介して、回転
ローラ４に伝えられ、缶体が回転移動する。本例では缶
体を１／６回転させ、それを６回反覆し、円周上で合計
６回、軸長上で２個所づつ計１２ヵ所の測定を行った。
各回ごとに前述の測定作業、回転作業を繰り返すことは
いうまでもない。なお一般には１２０°で１／３回転づ
つ合計３回、軸長上で２個所、計６箇所の測定で足りる
ものと考えられる。In order for the motor 22 to rotate the can body P,
The rotating roller 4 is rotated with a preset number of pulses. The number of pulses is preset in several types according to the outer diameter of the can body. By inputting the outer diameter of the can body with an electric signal to the control circuit provided in this device, the control circuit can adapt to the outer diameter. The number of pulses is selected and sent to the pulse motor 22. The rotation of the pulse motor is transmitted to the rotation roller 4 via the belt 23, and the can body rotates. In this example, the can body was rotated ⅙, and it was repeated 6 times, and a total of 6 positions were measured on the circumference and 2 positions were measured on the axial length, for a total of 12 positions.
It goes without saying that the measurement work and the rotation work described above are repeated each time. In general, it is considered that it is sufficient to make a total of three measurements, one third rotation at 120 °, two locations on the axial length, a total of six locations.

【００４９】１缶当たりの測定時間は１分程度ですみ、
しかも正確な測定値が得られる。一方、測定値を送られ
たコンピューターは予めコンピューターに設定された許
容値と測定値とを比較し、測定値が許容値内にあるか否
かを判定し、許容値内にあれば合格、許容値を越えてい
れば不合格として外部に電気的信号をもって出力し、同
時に印字装置に測定値を送り、紙印字し出力させる。The measuring time per can is about 1 minute,
Moreover, accurate measurement values can be obtained. On the other hand, the computer that sent the measured value compares the measured value with the allowable value set in advance in the computer, determines whether the measured value is within the allowable value, and if it is within the allowable value, it passes or accepts. If it exceeds the value, it will be rejected, and an electrical signal will be output to the outside, and at the same time, the measured value will be sent to the printing device, printed on paper, and output.

【００５０】[0050]

【発明の効果】本発明によれば次のような効果が得られ
る。According to the present invention, the following effects can be obtained.

【００５１】缶体が、測定子に接触するのは、所定角度
位置における測定時だけであり、回転時には非接触状態
におかれるから、従来のようにマンドレルなどに嵌装さ
れて強制連続回転されながら測定される場合はもちろ
ん、マンドレルなどに嵌装されることがないまでも、対
向する測定子と接触子との間を回転させられる場合にも
みられる、缶胴外面での接触疵の発生は皆無となり、ミ
クロンレベルでの測定値の信頼性が向上する。The can body comes into contact with the stylus only at the time of measurement at a predetermined angle position, and is kept in a non-contact state during rotation. Therefore, the can body is fitted on a mandrel or the like and continuously rotated by force. However, the occurrence of contact flaws on the outer surface of the can body, which is observed not only when it is measured but also when it is rotated between the facing probe and the contact probe, even if it is not fitted on the mandrel etc. Since there is nothing, the reliability of the measured value at the micron level is improved.

【００５２】缶胴壁中、肉厚の開口縁壁部分とそれより
下方の肉薄胴側壁部との２ヵ所を、所定の角度位置で、
同時に測定するが、その間、缶体を揺動させ、揺動の間
の最小値を検出するので、仮に基準ピンー測定子の測定
芯に対して缶軸の芯がズレてセットされても、そのズレ
に関係なく正確な壁厚測定が行える。In the can body wall, at two positions, a thick opening edge wall portion and a thin body side wall portion below that, at predetermined angular positions,
Simultaneously measure, but during that time, the can body is rocked, and the minimum value during rocking is detected, so even if the core of the can shaft is misaligned with respect to the measurement core of the reference pin-measuring element, the Accurate wall thickness measurement can be performed regardless of deviation.

【００５３】開口端が真円となっていない変形缶でも、
従来のように測定子を変形面に合わせて追従させる特別
な制御機構を必要とせず、縁壁部分の壁厚を正確に測定
できる。Even a deformed can whose opening end is not a perfect circle,
It is possible to accurately measure the wall thickness of the edge wall portion without requiring a special control mechanism that causes the tracing stylus to follow the deformed surface as in the conventional case.

【００５４】本発明では、測定時において、缶体を上記
２ヵ所で挟持する。もし１ヵ所で挟持するとすれば、缶
の軸線方向の傾きを規制する必要があり、そのために缶
を保持、あるいは支持する特別な機構が必要となってく
るが、そのように、缶に余分な外的な力を加えるとその
力が測定値に影響するため測定値の信頼性が低下する。
これを、２ヵ所同時に測定することで２組の測定子と基
準ピンが、前述の缶の軸線方向の傾きを互いに規制する
働きを兼ねるので、何ら特別な機構を要せずに、信頼性
のあるデータを得ることができる。In the present invention, the can body is clamped at the above-mentioned two places during measurement. If it is sandwiched in one place, it is necessary to regulate the inclination of the can in the axial direction, which requires a special mechanism for holding or supporting the can. When an external force is applied, the force influences the measured value, so the reliability of the measured value decreases.
By simultaneously measuring this at two locations, the two sets of contact points and the reference pin also have the function of mutually controlling the inclination of the can in the axial direction, so that no special mechanism is required and reliability is improved. You can get some data.

【００５５】缶の高さ方向の測定位置（トリムエッジか
らの距離）はすべての缶について共通なので缶長如何に
拘らず測定ができるが、缶長が支持部材の下アゴ部分の
長さにくらべて過大であっても、缶押さえレバーを有す
る缶体支持機構を更に備えることで、計測後に測定子を
缶体から離したときに、缶体が下アゴ部分から脱落する
ような事故発生を防止できる。Since the measuring position in the height direction of the cans (distance from the trim edge) is common to all the cans, the measurement can be performed regardless of the can length, but the can length is smaller than the length of the lower jaw portion of the support member. Even if it is too large, it is possible to prevent an accident such as the can body falling off from the lower jaw when the probe is separated from the can body after measurement by further providing a can body support mechanism with a can pressing lever. it can.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明装置例の全体正面図、FIG. 1 is an overall front view of an example of the device of the present invention,

【図２】その平面図、FIG. 2 is a plan view thereof,

【図３】その左側面図、FIG. 3 is a left side view thereof,

【図４】図２ＩＶーＩＶ線に沿う一部省略断面正面図、FIG. 4 is a partially omitted sectional front view taken along the line IV-IV of FIG.

【図５】揺動機構部を右側面からみた動作説明図、FIG. 5 is an operation explanatory view of the swinging mechanism section as viewed from the right side,

【図６】絞りしごき缶の一例の断面図。FIG. 6 is a sectional view of an example of a squeezed ironing can.

【図面の符号】[Symbols of the drawing]

１… 基台、１ｂ… 天板、 １ｄ… 抜き穴、２…
ロッドレスシリンダー、３… エアシリンダー（移動
台昇降用）、４… 回転ローラ、５… 移動台、６…
エアーノズル、８，８′… デジタルゲージ、９… エ
アシリンダー（測定子昇降用）、１０，１０′… 測定
子、１１，１１′… 基準ピン、１２… 缶押えレバ
ー、 １２ａ… 水平レバー、１３… エアシリンダー
（缶押えレバー昇降用）、１４… モーター、１６…
振子レバー、 １６ａ… 長穴、１８… コ字状レバ
ー、 １８ａ… ピン、１９… アーム、２１… 回転
駒、２２… パルスモーター、２４… エアシリンダー
（ストッパー用）、２５… 支持部材、２５ａ… 上ア
ゴ部分、２５ｂ…下アゴ部分、２６… 揺動ピン、２８
… 垂直板、Ａ… 測定部、 Ｂ…移動・回転機構部、
Ｃ…揺動機構部、Ｐ… 絞りしごき缶。1 ... Base, 1b ... Top plate, 1d ... Hole, 2 ...
Rodless cylinder, 3 ... Air cylinder (for raising / lowering the moving table), 4 ... Rotating roller, 5 ... Moving table, 6 ...
Air nozzle, 8, 8 '... Digital gauge, 9 ... Air cylinder (for raising and lowering the measuring element) 10, 10' ... Measuring element, 11, 11 '... Reference pin, 12 ... Can pressing lever, 12a ... Horizontal lever, 13 … Air cylinder (for lifting can holding lever), 14… Motor, 16…
Pendulum lever, 16a ... Oval hole, 18 ... U-shaped lever, 18a ... Pin, 19 ... Arm, 21 ... Rotating piece, 22 ... Pulse motor, 24 ... Air cylinder (for stopper), 25 ... Support member, 25a ... Above Jaw portion, 25b ... Lower jaw portion, 26 ... Swing pin, 28
... Vertical plate, A ... Measuring part, B ... Moving / rotating mechanism part,
C ... Swing mechanism part, P ... Squeeze ironing can.

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成４年３月４日[Submission date] March 4, 1992

【手続補正２】[Procedure Amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】０００４[Correction target item name] 0004

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【０００４】 また、その他にも、アイアニング加工で
成形された缶の開口端部をトリミングし、フランジ成形
する場合、トリミングされた縁部から２〜１０ｍｍほど
の開口縁壁部分は、それより下方の、胴壁の大部分を占
める側壁部よりは肉厚が厚く形成されるが、その部分の
壁厚にバラツキがあると、フランジ割れなどの発生の原
因になる。[0004] Besides, to trim the open end of the can that is molded by ironing processing, the case of flanging, opening edge wall portions of the trimmed edge as 2~10mm, from the lower it The wall thickness is formed thicker than the side wall portion occupying most of the body wall, but if the wall thickness of that portion varies, flange cracking or the like may occur.

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】缶体内周面と接触する固定された基準ピン
と、該基準ピンに対向して缶体外周面と接触し、該基準
ピンに向かって移動可能な測定子との間に缶体胴壁部を
挿入し、缶体を回転させ、所定の角度位置において、そ
の都度基準ピンと測定子とで缶体胴壁部を挟み、基準ピ
ンと測定子との間隔を電気的に測定する、絞りしごき缶
の缶胴壁厚寸法測定方法において、横置された缶軸方向
に、缶体の開口縁壁部分と、この開口縁壁部分より所定
軸長さ缶底側に離れた缶胴側壁部の２ケ所を基準ピンと
測定子とで挟み、挟んだ状態で缶体を横揺れさせ、その
間連続的に基準ピンと測定子との間隔を測定し、その測
定値の最小値を各々検出し、開口縁壁厚と前記缶胴側壁
厚とを同時に検出することを特徴とする絞りしごき缶の
缶胴壁厚寸法測定方法。1. A can body between a fixed reference pin that contacts the inner surface of the can body, and a probe that faces the reference pin and contacts the outer surface of the can body and is movable toward the reference pin. Insert the barrel wall, rotate the can body, sandwich the can body barrel wall with the reference pin and the probe each time at a predetermined angular position, and electrically measure the distance between the reference pin and the probe. In the method for measuring the thickness of the can body wall of an ironing can, in the can axis direction laid horizontally, the opening edge wall part of the can body and the can body side wall part separated from this opening edge wall part to the can bottom side by a predetermined axial length. The two points are sandwiched between the reference pin and the stylus, and the can body is swayed in the sandwiched state. During that time, the distance between the reference pin and the stylus is continuously measured, and the minimum value of the measured values is detected, and the opening is performed. Measurement of can body wall thickness of drawn and squeezed can, characterized by simultaneously detecting edge wall thickness and can body side wall thickness Law. 【請求項２】缶体内周面と接触する固定された基準ピン
と、該基準ピンに対向して缶体外周面と接触し、該基準
ピンに向かって移動可能な測定子とを有する測定手段
と、該基準ピンと測定子との間に挿入された缶体を所定
角度で複数回回動させて１回転させる回転手段とを有
し、所定角度位置におかれた缶体について、その都度基
準ピンと測定子とで缶胴壁部を挟持し、基準ピンと測定
子との間隔を電気的に測定する、絞りしごき缶の缶胴壁
厚寸法測定装置において、 横置された缶体内部に入り込む部分であって、缶内周面
の開口縁壁部分と該開口縁壁部分より所定軸長さ缶底側
に離れた缶胴側壁部とに夫々接触する第１基準ピン、第
２基準ピンが固装されている、下アゴ部分と、 該下アゴ部分と平行に缶体外側缶軸方向に延びる部分で
あって、前記第１，２基準ピンと対向して缶外周面に接
触し、該基準ピンに向かって上下動可能な第１，２測定
子を有し、第１基準ピンと第１測定子の間隔を検出する
第１測定器と、第２基準ピンと第２測定子の間隔を検出
する第２測定器とがそれぞれ装着されている、上アゴ部
分と、 を有する、軸断面コ字形の支持部材と、 該基準ピンと該測定子とによって挟持されている横置缶
体の長手軸心より上方で缶体外周面に接触する一対のピ
ンを対向端部に有する部材を、缶軸と直交する方向に水
平動させて、前記ピンを交互に缶体に接触させる振り子
構造を備えた缶体揺動機構と、 缶体を横置支持する回転体を備え、該缶体を前記下アゴ
部分に挿入或いは下アゴ部分から離脱させる水平走行・
上下動可能な移動台と、該回転体を回動させて缶体を所
定角度回転させる手段とを有する缶体移動・回転機構
と、 缶体揺動中、第１，２測定器で計測したそれぞれの壁厚
最小値を取り出し、予め定めた基準値と比較判別し、そ
の結果を外部出力する制御機構とを備えたことを特徴と
する絞りしごき缶の缶胴壁厚寸法測定装置。2. A measuring means having a fixed reference pin which is in contact with the inner peripheral surface of the can body, and a probe which is opposed to the reference pin and is in contact with the outer peripheral surface of the can body and is movable toward the reference pin. And a rotating means for rotating the can body inserted between the reference pin and the measuring element a plurality of times at a predetermined angle to make one rotation, and the can body placed at a predetermined angle position is measured with the reference pin each time. In a can body wall thickness measuring device for squeezed ironing cans, which sandwiches the can body wall part with a child and electrically measures the distance between the reference pin and the probe, this is the part that enters inside the horizontally placed can body. A first reference pin and a second reference pin that are in contact with the opening edge wall portion of the inner peripheral surface of the can and the can body side wall portion that is separated from the opening edge wall portion by a predetermined axial length toward the can bottom side, respectively. A lower jaw portion and a portion extending in the can axis direction outside the can in parallel with the lower jaw portion. The first and second reference pins, which are in contact with the outer peripheral surface of the can and are movable up and down toward the reference pin. A first measuring device for detecting and a second measuring device for detecting a distance between the second reference pin and the second measuring element, respectively, and an upper jaw portion, and a supporting member having an axial U-shaped cross section, A member having a pair of pins at opposite ends, which are in contact with the outer peripheral surface of the can body above the longitudinal axis of the horizontal can body sandwiched by the reference pin and the measuring element, is horizontally arranged in a direction orthogonal to the can axis. A can body swinging mechanism having a pendulum structure for moving the pins alternately to contact the can body; and a rotating body for laterally supporting the can body. Horizontal running to disengage from the jaw
A can body moving / rotating mechanism having a vertically movable movable base and means for rotating the rotating body to rotate the can body at a predetermined angle, and measured with the first and second measuring devices during can body swinging. A can body wall thickness measuring device for a squeezed and squeezed can, comprising a control mechanism for taking out the minimum value of each wall thickness, comparing and discriminating it with a predetermined reference value, and outputting the result to the outside. 【請求項３】該下アゴ部分の下面側と缶内周面の間で上
下動する缶押えレバーを有し、缶内周面を下方に向かっ
て押し付け支持し、缶胴壁部が各基準ピンと各測定子と
で挟持された後、その押し付け力を解放する缶体支持機
構をさらに備えている請求項２記載の絞りしごき缶の缶
胴壁厚寸法測定装置。3. A can pressing lever which moves up and down between the lower surface of the lower jaw portion and the inner peripheral surface of the can, the inner peripheral surface of the can being pressed downward to be supported, and the can body wall portion serves as a reference. The can body wall thickness measuring device for a drawn and squeezed can according to claim 2, further comprising a can body support mechanism that releases the pressing force after being pinched by the pin and each probe.