JPH05306911A - Machine for automatically inspecting molded plastic container for nonuniform section - Google Patents
Machine for automatically inspecting molded plastic container for nonuniform sectionInfo
- Publication number
- JPH05306911A JPH05306911A JP11148792A JP11148792A JPH05306911A JP H05306911 A JPH05306911 A JP H05306911A JP 11148792 A JP11148792 A JP 11148792A JP 11148792 A JP11148792 A JP 11148792A JP H05306911 A JPH05306911 A JP H05306911A
- Authority
- JP
- Japan
- Prior art keywords
- container
- inspected
- negative pressure
- fixed
- wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、プラスチックシートを
用いた真空、圧空成形法によるシート成形、又はブロー
成形等のプラスチック成形により成形されるカップ状容
器、ボトル状容器等プラスチック製容器において、その
容器の外壁に発生する偏肉の有無を検査するためのプラ
スチック成形容器偏肉自動検査機に関する。BACKGROUND OF THE INVENTION The present invention relates to a plastic container such as a cup-shaped container or a bottle-shaped container formed by plastic molding such as sheet molding by vacuum or pressure molding using a plastic sheet, or blow molding. The present invention relates to a plastic molded container uneven thickness automatic inspection machine for inspecting the presence or absence of uneven thickness generated on the outer wall of a container.
【０００２】[0002]
【従来の技術】一般的に、プラスチック製の容器は、理
想的には容器壁面の厚味（肉厚）分布が所定の容器設計
通りに均一であることが望ましい。しかしながら、シー
ト成形、ブロー成形法などによって成形されるプラスチ
ック容器は、実際には成形条件等の影響によって、成形
容器のプラスチック壁面の厚味に多少の不均一（偏肉）
が生じるものである。2. Description of the Related Art Generally, it is desirable that a plastic container ideally has a uniform thickness (wall thickness) distribution on the wall surface of the container according to a predetermined container design. However, plastic containers molded by sheet molding, blow molding, etc. actually have some unevenness (uneven thickness) in the thickness of the plastic wall of the molding container due to the influence of molding conditions.
Occurs.
【０００３】[0003]
【発明が解決しようとする課題】上記偏肉を測定する従
来の方法としては、接触式又は非接触式の厚味検査機が
あるが、接触式の厚味検査機では、被検査容器に接触傷
を生じ易く、又検査のスピードに限界があり、非接触式
の光透過式厚味検査機では、被検査容器が不透明である
場合には使用できないなどの問題点がある。本発明は、
透明、不透明に関わらずプラスチック容器の成形壁面の
偏肉の有無を高速にて検査することができるようにする
ことにある。As a conventional method for measuring the uneven thickness, there is a contact type or non-contact type thickness inspection device. In the contact type thickness inspection device, the container to be inspected is contacted. There is a problem that the scratches are likely to occur and the inspection speed is limited, so that the non-contact type light transmission type thickness inspection machine cannot be used when the container to be inspected is opaque. The present invention is
It is to enable to inspect at high speed whether or not there is uneven thickness on the molding wall surface of a plastic container regardless of whether it is transparent or opaque.
【０００４】[0004]
【課題を解決するための手段】本発明は、プラスチック
成形された被検査容器１をその開口部１ａにて装着固定
し回転動作可能な回転台３と、該回転台３に装着固定さ
れる前記被検査容器１の容器内を負圧吸引する回転台３
に備えたエアー吸引孔３ａと、該回転台３に載置固定さ
れる被検査容器１の外壁面に沿って適宜個所に離間対向
設置した非接触式の変位センサー４とを備えたことを特
徴とするプラスチック成形容器偏肉自動検査機である。According to the present invention, there is provided a rotary base 3 which is mounted and fixed on a plastic molded container 1 to be inspected at its opening 1a and which is rotatable, and a rotary base 3 mounted and fixed on the rotary base 3. Rotating table 3 for sucking negative pressure inside the container 1 to be inspected
And an air suction hole 3a provided on the rotary table 3 and a non-contact type displacement sensor 4 which is installed at an appropriate location along the outer wall surface of the container 1 to be inspected mounted and fixed on the rotary table 3 so as to face each other. It is an automatic inspection machine for uneven thickness of plastic molded containers.
【０００５】[0005]
【実施例】本発明のプラスチック成形容器偏肉自動検査
機を実施例に従って以下に詳細に説明する。図１は、本
発明のプラスチック成形容器偏肉自動検査機の一実施例
を示す斜視図であり、検査機本体フレーム１０（支持
部）に回転可能に軸支される垂直回転軸に支承された回
転可能な回転台３を備え、該回転台３上にはその上面
に、カップ、ボトル等のプラスチック成形により得られ
た被検査用の容器１をその開口部１ａ側を装着して固定
できるようになっている。EXAMPLES The plastic molded container uneven thickness automatic inspection machine of the present invention will be described in detail below with reference to examples. FIG. 1 is a perspective view showing an embodiment of an automatic thickness deviation inspection machine for plastic molded containers of the present invention, which is supported by a vertical rotation shaft rotatably supported by an inspection machine body frame 10 (support portion). A rotatable turntable 3 is provided, and on the turntable 3, a container 1 to be inspected obtained by molding a plastic such as a cup or a bottle can be fixed by mounting the opening 1a side on the upper surface thereof. It has become.
【０００６】被検査用の容器１（被検査容器）は、例え
ば、円筒状の容器１の中心軸相当部を、上記回転台３の
回転中心に合致するように該回転台３に装着固定する。The container 1 to be inspected (container to be inspected) is mounted and fixed on the rotary table 3 so that, for example, a portion corresponding to the central axis of the cylindrical container 1 coincides with the rotation center of the rotary table 3. ..
【０００７】回転台３の台面には、エアー吸引流路５よ
りエアーを吸引するためのエアー吸引孔３ａを備え、該
回転台３に容器１の開口部１ａを接触させ、該エアー吸
引孔３ａよりエアー吸引したときに、容器１の内部を負
圧状態にするものである。An air suction hole 3a for sucking air from the air suction flow path 5 is provided on the surface of the rotary table 3, and the opening 1a of the container 1 is brought into contact with the rotary table 3 to make the air suction hole 3a. When the air is further sucked, the inside of the container 1 is brought into a negative pressure state.
【０００８】エアー吸引により容器１内部を負圧状態に
保持することによって、容器１を回転台３面に吸着固定
し、該容器１が回転台３の回転移動によってその回転中
心よりずれ移動しないようにする。By holding the inside of the container 1 in a negative pressure state by air suction, the container 1 is adsorbed and fixed on the surface of the rotating table 3 so that the container 1 does not move from its rotation center due to the rotational movement of the rotating table 3. To
【０００９】又、回転台３の回転動作によって被検査用
の容器１がずれ移動しないように、容器１を該回転台３
上に固定するための固定治具２を備える。Further, the container 1 to be inspected is prevented from being displaced by the rotating operation of the rotary table 3 so that the container 1 is not moved.
The fixing jig 2 for fixing on top is provided.
【００１０】例えば、上記回転台３面には、容器１の開
口部１ａ内周に密接して該開口部１ａ内に嵌合する段差
面から構成される固定治具２（図１参照）を備え、又、
該容器１の開口部１ａ外周に密接して、該開口部１ａを
包囲するような固定治具（図示せず）を備えるようにし
てもよい。For example, a fixing jig 2 (see FIG. 1) is formed on the surface of the rotary table 3 and is composed of a stepped surface that fits closely to the inner circumference of the opening 1a of the container 1 and fits into the opening 1a. Prepare,
A fixing jig (not shown) may be provided so as to closely surround the opening 1a of the container 1 and surround the opening 1a.
【００１１】該固定治具２は、回転台３に対して一体に
設けられるか、若しくは取付け取外し自在なアタッチメ
ントとして備えるようにしてもよい。The fixing jig 2 may be provided integrally with the turntable 3 or may be provided as an attachment which can be attached and detached.
【００１２】上記回転台３面は、容器１の開口部１ａ周
端縁部と互いに平坦に接触して容器１内部を密封できる
平坦面を備え、必要に応じて、回転台３面は平坦且つ比
較的弾力性のあるゴム製の材料によって仕上げることが
できる。又、図１に示す段差面から構成される固定治具
２は、弾力性のあるゴム製の材料を使用することができ
る。The surface of the rotary table 3 is provided with a flat surface that can be brought into flat contact with the peripheral edge of the opening 1a of the container 1 to seal the inside of the container 1. If necessary, the surface of the rotary table 3 is flat and It can be finished with a relatively elastic rubber material. Further, the fixing jig 2 composed of the stepped surface shown in FIG. 1 can use an elastic rubber material.
【００１３】上記回転台３に装着固定される被検査容器
１の外壁（円筒状の容器１外周部、あるいは底部）に沿
って離間対向して、１個乃至複数個のレーザー方式によ
るレーザー投光部とレーザー受光部とを備えた反射型の
変位センサー４を固定状態に設置する。One or a plurality of laser-type laser projections are provided so as to face each other along the outer wall (the outer peripheral portion or the bottom portion of the cylindrical container 1) of the container 1 to be inspected, which is mounted and fixed on the rotary table 3. The displacement sensor 4 of the reflection type, which is provided with the section and the laser receiving section, is fixedly installed.
【００１４】図２は、本発明のプラスチック成形容器偏
肉自動検査機の一実施例の側面図であり、回転台３は、
検査機本体支持フレーム１０の軸受部１１に垂直に軸支
された回転支軸１２の上端部に一体に取付けられ、該支
軸１２の下端部には、支軸駆動ギア１３を備え、該支軸
駆動ギア１３は、電動モーターＭ（サーボモーター、パ
ルスモーターなど）によって回転する駆動ギア１４に噛
合して例えば１０ｒｐｍ〜１００ｒｐｍ乃至それ以上の
速度で駆動回転する。なお、１１ｂは支軸１２のベアリ
ング軸受部である。FIG. 2 is a side view of an embodiment of the automatic uneven thickness inspection machine for plastic molded containers of the present invention.
It is integrally attached to an upper end portion of a rotary support shaft 12 which is vertically supported by a bearing portion 11 of an inspection machine main body support frame 10, and a support shaft drive gear 13 is provided at a lower end portion of the support shaft 12. The shaft drive gear 13 meshes with a drive gear 14 that is rotated by an electric motor M (servo motor, pulse motor, etc.) and rotates at a speed of, for example, 10 rpm to 100 rpm or higher. Reference numeral 11b is a bearing bearing portion of the support shaft 12.
【００１５】回転支軸１２には、該回転支軸１２の回転
に連動して動作するロータリーエンコーダー又は該回転
支軸１２に取り付けたカムスイッチなど前記支軸１２が
１回転する毎に変位センサー４の検出信号をリセットす
るためのリセット信号と、該回転支軸１２の１回転（３
６０°）内での所定回転位相角度毎（例えば回転角度１
°毎乃至５°毎など３６０°／ｎ毎、ｎは３６０°の約
数）に変位センサー４の検出を行なうための検出ゲート
信号（検出読取開始用パルス）を発生させるタイミング
信号デコーダ１６を設ける。The rotary support shaft 12 has a displacement sensor 4 for each rotation of the support shaft 12, such as a rotary encoder operating in conjunction with the rotation of the rotary support shaft 12 or a cam switch attached to the rotary support shaft 12. Reset signal for resetting the detection signal of the rotation supporting shaft 12 and one rotation (3
Each predetermined rotation phase angle within 60 ° (for example, rotation angle 1
A timing signal decoder 16 for generating a detection gate signal (pulse for starting detection and detection) for detecting the displacement sensor 4 is provided at every 360 ° / n such as every 5 ° to 5 °, where n is a divisor of 360 °. ..
【００１６】回転台３を軸支した回転支軸５内には、該
回転台３に固定治具２を介して孔設したエアー吸引孔３
ａと連通するエアー流路５を備え、該エアー流路５は、
軸受部１１内のエアー流路１１ａに連通し、該エアー流
路１１ａはエアー吸引管１５に連通している。上記エア
ー吸引管１５から、所定のバキュームポンプ（図示せ
ず）によって、所定吸引圧力にてエアーを吸引すること
により、前記エアー吸引孔３ａよりエアーを吸引動作す
る。An air suction hole 3 is formed in the rotary support shaft 5 which supports the rotary base 3 through a fixing jig 2.
The air flow path 5 communicating with a is provided, and the air flow path 5 is
It communicates with the air flow path 11 a in the bearing portion 11, and the air flow path 11 a communicates with the air suction pipe 15. A predetermined vacuum pump (not shown) sucks air at a predetermined suction pressure from the air suction pipe 15 to suck air through the air suction holes 3a.
【００１７】回転台３の回転中心に合わせて装着固定さ
れた被検査容器１の外壁に沿って離間対向して設置され
るレーザー方式による変位センサー４は、該容器１の側
壁における上部、下部、又は中間部の複数個所（図２に
おいては４個所）に設置し、又、該容器１の底部におけ
る回転中心部、その近傍の複数個所（図２においては３
個所）に設置するものである。Displacement sensors 4 of the laser type, which are installed facing each other along the outer wall of the container 1 to be inspected mounted and fixed in accordance with the center of rotation of the rotating table 3, are arranged at the upper and lower portions of the side wall of the container 1, Alternatively, they are installed at a plurality of places in the middle part (four places in FIG. 2), and at a plurality of places in the vicinity of the center of rotation at the bottom of the container 1 (3 in FIG. 2).
Location).
【００１８】被検査容器１を回転させながら、その容器
１外壁面の変位状態を変位センサー４にて検出し、例え
ば、被検査容器１の外壁に規定肉厚（設計値）以下の薄
肉個所がある場合には、その薄肉個所に負圧による凹陥
部１ｂが発生する。While the container 1 to be inspected is rotated, the displacement state of the outer wall surface of the container 1 is detected by the displacement sensor 4, and for example, a thin wall portion of the outer wall of the container 1 to be inspected having a thin wall thickness (design value) or less In some cases, a concave portion 1b is generated in the thin portion due to negative pressure.
【００１９】規定肉厚部における容器１外壁面と変位セ
ンサー４との離間距離（変位０の規定距離）に対して、
凹陥部１ｂにおける容器１外壁面と変位センサー４との
離間距離が増大し、それに伴って変位センサー４の投光
部から容器１外壁面に投光された後に容器１の外壁面で
反射して光学レンズを介してレーザー受光部に入射する
レーザー光の入射角度が変化し、レーザー受光部の受光
面でのレーザー照射位置が変位し、その変位位置をその
受光面に備えたＣＣＤセンサー（ラインセンサー）がデ
ジタル信号として検知し、容器１の外壁面の変位の有無
を検出することができる。With respect to the distance between the outer wall surface of the container 1 and the displacement sensor 4 in the specified thickness portion (specified distance of 0 displacement),
The distance between the outer wall surface of the container 1 and the displacement sensor 4 in the recessed portion 1b increases, and accordingly, the light is emitted from the light projecting portion of the displacement sensor 4 to the outer wall surface of the container 1 and then reflected by the outer wall surface of the container 1. The incident angle of the laser beam incident on the laser receiving part via the optical lens changes, the laser irradiation position on the light receiving surface of the laser receiving part is displaced, and the CCD sensor (line sensor) equipped with the displaced position on the light receiving surface ) Is detected as a digital signal, and the presence or absence of displacement of the outer wall surface of the container 1 can be detected.
【００２０】本発明のプラスチック成形容器偏肉自動検
査機による検査動作を図２に従って下記に説明する。
円筒状の被検査容器１（プラスチックボトル容器）の開
口部１ａを下側にした該容器１の開口部１ａ内に、回転
台３面に一体の段差面から構成されるゴム製の固定治具
２を密着状態（タイト）に嵌合し、被検査容器１を回転
台３に装着固定にする。An inspection operation by the automatic uneven thickness inspection machine for plastic molded containers of the present invention will be described below with reference to FIG.
A cylindrical fixing jig made of a step surface integrated with the rotary table 3 inside the opening 1a of the cylindrical container 1 (plastic bottle container) with the opening 1a facing downward. 2 is fitted in a close contact state (tight), and the container 1 to be inspected is mounted and fixed on the turntable 3.
【００２１】その後、エアー吸引動作を不作動状態（被
検査容器１内に負圧を与えない状態）にして、ロータリ
ーエンコーダなどタイミングデコーダ１６より発信する
検出ゲート信号毎（所定回転位相角度毎）に、変位セン
サー４にて、負圧を与えない状態での１回転中での被検
査容器１の変位量の検出を開始する。その変位量検出信
号は検出データ（又は検出信号波形データ）として一旦
データメモリ手段にメモリする。Thereafter, the air suction operation is made inactive (a state in which a negative pressure is not applied to the container 1 to be inspected), and each detection gate signal (every predetermined rotation phase angle) transmitted from the timing decoder 16 such as a rotary encoder. Then, the displacement sensor 4 starts detecting the amount of displacement of the container 1 to be inspected during one rotation without applying a negative pressure. The displacement amount detection signal is temporarily stored in the data memory means as detection data (or detection signal waveform data).
【００２２】次に、回転台３を回転動作させて被検査容
器１を回転させながら、エアー吸引動作させてエアー吸
引孔３ａからエアーを吸引し、被検査容器１の容器内を
適正な負圧状態にした後に、変位センサー４によって、
負圧状態での該容器１外壁面の１回転中での変位量の検
出を開始する。Next, while rotating the rotary table 3 to rotate the container 1 to be inspected, an air suction operation is performed to suck air from the air suction holes 3a, so that the inside of the container of the container 1 to be inspected has a proper negative pressure. After making the state, by the displacement sensor 4,
The detection of the amount of displacement of the outer wall surface of the container 1 during one rotation in a negative pressure state is started.
【００２３】負圧状態にある上記被検査容器１の１回転
中に検出される変位量を、タイミング信号デコーダ１６
から発信する検出ゲート信号が発信される毎に変位セン
サー４によって検出し、その検出信号を検出データ（又
は検出信号波形データ）として一旦メモリ手段にメモリ
する。The timing signal decoder 16 detects the displacement detected during one rotation of the container 1 to be inspected in the negative pressure state.
Each time a detection gate signal transmitted from is detected, it is detected by the displacement sensor 4, and the detection signal is temporarily stored in the memory means as detection data (or detection signal waveform data).
【００２４】続いて、前記検出ゲート信号毎にメモリさ
れた負圧を与えない状態での変位量検出データと負圧状
態での変位量検出データとを順次読み出して、両者の差
分を演算する。Subsequently, the displacement amount detection data in the state where the negative pressure is not applied and the displacement amount detection data in the negative pressure state stored for each detection gate signal are sequentially read out, and the difference between the two is calculated.
【００２５】又、負圧状態での被検査容器１外壁の変位
量検出と同時に差分を演算することは可能であり、例え
ば、負圧を与えない状態での検出データをメモリしたデ
ータメモリ手段から、負圧状態の検査において使用され
る検出ゲート信号をメモリ読出指令信号として、負圧を
与えない状態での先の検出データ（メモリデータ）を読
み出し、その負圧を与えない状態での読出検出データ
と、検出ゲート信号の発信毎に検出される負圧状態での
検出データとの差分を、検出ゲート信号の発信毎に演算
することは可能である。Further, it is possible to calculate the difference at the same time as detecting the displacement amount of the outer wall of the container 1 to be inspected in the negative pressure state. For example, from the data memory means which stores the detection data in the state where the negative pressure is not applied. , The detection gate signal used in the inspection of the negative pressure state is used as the memory read command signal to read the previous detection data (memory data) in the state where the negative pressure is not applied, and the read detection in the state where the negative pressure is not applied. It is possible to calculate the difference between the data and the detection data in the negative pressure state detected each time the detection gate signal is transmitted, every time the detection gate signal is transmitted.
【００２６】上記検査方式は、いずれも被検査容器１が
１回転する間の所定回転位相角度毎に発信される検出ゲ
ート信号に基づいて、負圧を与えない状態での被検査容
器１の外壁の変位量と、負圧状態での該被検査容器１の
外壁の変位量とを検出し、１回転中の各回転位相角度毎
に検出された両者の各々変位量検出信号（検出データ）
を、その回転位相角度毎に比較して差分を演算するもの
である。In each of the above inspection methods, the outer wall of the container 1 to be inspected in the state where no negative pressure is applied is based on the detection gate signal transmitted at every predetermined rotation phase angle during one revolution of the container 1 to be inspected. And the amount of displacement of the outer wall of the container 1 to be inspected under negative pressure, and the respective displacement amount detection signals (detection data) detected for each rotation phase angle during one rotation.
Is compared for each rotation phase angle, and the difference is calculated.
【００２７】本発明の他の実施例としては、例えば、被
検査容器１が１回転する間の所定回転位相角度毎に発信
される検出ゲート信号に基づいて、負圧を与えない状態
での被検査容器１の外壁の変位量と、負圧状態での該被
検査容器１の外壁の変位量とを検出し、１回転中の各回
転位相角度毎に検出された両者の各々変位量検出信号
（検出データ）の最大値と最小値とを抽出し、続いて両
者の各々最大値と最小値との差を変位差として求め、そ
の両者の変位差の差分を演算するものである。As another embodiment of the present invention, for example, based on the detection gate signal transmitted at every predetermined rotation phase angle during one rotation of the container 1 to be inspected, the container to be inspected in the state where no negative pressure is applied is provided. The displacement amount of the outer wall of the inspection container 1 and the displacement amount of the outer wall of the container 1 to be inspected in a negative pressure state are detected, and the displacement amount detection signals of both detected at each rotation phase angle during one rotation. The maximum value and the minimum value of (detection data) are extracted, the difference between the maximum value and the minimum value of each of them is subsequently obtained as a displacement difference, and the difference between the displacement differences of the two is calculated.
【００２８】本発明においては、上記一実施例及び他の
実施例において説明したエアー吸引動作以前の負圧を与
えない状態での被検査容器１と、エアー吸引動作以後の
負圧状態での被検査容器１との間の検出データの差分
を、検査判定のための数値として用いる。In the present invention, the container 1 to be inspected in the state in which the negative pressure is not applied before the air suction operation and the negative pressure state after the air suction operation described in the above-mentioned one embodiment and other embodiments are carried out. The difference in the detection data with the inspection container 1 is used as a numerical value for inspection determination.
【００２９】例えば、上記差分の数値が０、又は、ある
設定範囲内にある場合には、被検査容器１に偏肉が無い
ものと判定し、一方、前記差分の数値が、ある設定範囲
外にある場合には、被検査容器１に偏肉が有ると判定す
る。For example, when the value of the difference is 0 or within a certain setting range, it is determined that the container 1 to be inspected has no uneven thickness, while the value of the difference is outside the certain setting range. If it exists, it is determined that the container 1 to be inspected has uneven thickness.
【００３０】本発明のプラスチック成形容器偏肉自動検
査機において、変位センサー４は、被検査容器１の外壁
面に沿って１個乃至複数個を離間対向して設置するもの
であるが、変位センサー４による容器１外壁の変位量の
検出によって求められる差分は、各変位センサー４によ
ってそれぞれ独立して求め、全ての変位センサー４のい
ずれかの変位センサー４によって得られる差分の数値が
０、又は、ある設定範囲内にある場合には、被検査容器
１に偏肉が無いものと判定し、一方、前記差分の数値
が、ある設定範囲外にある場合には、被検査容器１に偏
肉が有ると判定するものである。In the automatic uneven thickness inspection machine for plastic molded containers according to the present invention, the displacement sensor 4 is installed along the outer wall surface of the container 1 to be inspected so that one or more of them are spaced apart and face each other. The difference obtained by detecting the displacement amount of the outer wall of the container 1 by 4 is independently obtained by each displacement sensor 4, and the numerical value of the difference obtained by any one of the displacement sensors 4 is 0, or When it is within a certain setting range, it is determined that the inspected container 1 has no uneven thickness. On the other hand, when the numerical value of the difference is outside the certain setting range, the inspected container 1 has an uneven thickness. It is determined that there is.
【００３１】又、本発明におけるエアー吸引負圧の適正
値は、被検査容器１の外壁面における厚味の薄い偏肉個
所（容器１の外壁厚さが薄い部分）のみに負圧による凹
陥変形（凹陥部１ｂ）が発生する程度の適度な吸引負圧
を設定することによって実施するもので、吸引し過ぎに
よって被検査容器１全体に変形歪みが発生しないように
設定することが必要である。The proper value of the negative air suction pressure in the present invention is the concave deformation due to the negative pressure only in the uneven thickness portion of the outer wall surface of the container 1 to be inspected (the portion where the outer wall thickness of the container 1 is thin). This is carried out by setting an appropriate suction negative pressure to the extent that the (concave portion 1b) is generated, and it is necessary to set so that deformation distortion does not occur in the entire container 1 to be inspected due to excessive suction.
【００３２】なお、本発明において、回転台３の回転は
水平面内の回転、乃至、垂直面内の回転を採用すること
が可能であり、又、回転台３に対する被検査容器１の装
着固定方式は、上記実施例に限定せず、本発明の趣旨を
逸脱しない範囲で適宜変更が可能である。In the present invention, the rotation of the turntable 3 can be a rotation in a horizontal plane or a rotation in a vertical plane, and a method of mounting and fixing the container 1 to be inspected on the turntable 3 can be used. The present invention is not limited to the above-mentioned embodiment, and can be changed as appropriate without departing from the spirit of the present invention.
【００３３】[0033]
【作用】本発明のプラスチック成形容器偏肉自動検査機
は、プラスチック製の被検査容器１をその開口部１ａに
て回転台３に装着固定し、装着固定された前記被検査容
器１の容器内を負圧吸引しながら回転台３を駆動させ
て、容器１を回転させることができる。According to the automatic uneven thickness inspection machine for plastic molded containers of the present invention, the inspected container 1 made of plastic is mounted and fixed on the rotary table 3 at the opening 1a, and the inside of the mounted and fixed inspected container 1 is inspected. The container 1 can be rotated by driving the rotary table 3 while suctioning the negative pressure.
【００３４】又、回転する容器１の外壁に離間対向して
変位センサー４を設け、容器１外壁に偏肉による薄肉部
がある場合には、容器１外壁に負圧による凹陥部が発生
して外壁に変位が生じ、容器１外壁と変位センサー４と
の間の距離が変化し、その変位の有無を変位センサー４
によって検出することができ、被検査容器１の偏肉の有
無を検査することができる。Further, when the displacement sensor 4 is provided so as to face the outer wall of the rotating container 1 so as to be spaced apart from each other, and if the outer wall of the container 1 has a thin portion due to uneven thickness, a concave portion due to negative pressure is generated on the outer wall of the container 1. Displacement occurs on the outer wall, the distance between the outer wall of the container 1 and the displacement sensor 4 changes, and the displacement sensor 4 determines whether or not the displacement has occurred.
The presence or absence of uneven thickness of the container 1 to be inspected can be inspected.
【００３５】[0035]
【発明の効果】本発明のプラスチック成形容器偏肉自動
検査機は、プラスチック成形により成形されたプラスチ
ック製の被検査容器が透明又は不透明であるに関わら
ず、又、真円形状、楕円形状に関わらず、容器成形壁面
における偏肉（成形壁面の厚味の偏り）の有無を精度よ
く検査することができる効果がある。EFFECT OF THE INVENTION The plastic molded container eccentricity automatic inspection machine of the present invention, regardless of whether the plastic container to be inspected formed by plastic molding is transparent or opaque, and whether it is a perfect circle or an ellipse. In addition, there is an effect that it is possible to accurately inspect for the presence or absence of uneven thickness (uneven thickness of the molding wall surface) on the container molding wall surface.
【図１】本発明のプラスチック成形容器偏肉検査機の一
実施例の全体斜視図である。FIG. 1 is an overall perspective view of an embodiment of an uneven thickness inspection machine for plastic molded containers of the present invention.
【図２】本発明のプラスチック成形容器偏肉検査機の一
実施例の側面図である。FIG. 2 is a side view of an embodiment of the uneven thickness inspection machine for plastic molded containers of the present invention.
１…被検査容器 １ａ…開口部 １ｂ…凹陥部 ２…固
定治具 ３…回転台 ３ａ…エアー吸引孔 ４…変位センサー ５…エアー流
路 １０…検査機本体支持フレーム １１…軸受部 １１ａ
…エアー流路 １１ｂ…ベアリング軸受部 １２…回転支軸 １３…回
転駆動ギア １４…駆動ギア １５…エアー流路 １６…タイミング
信号デコーダ Ｍ…電動モーターDESCRIPTION OF SYMBOLS 1 ... Container to be inspected 1a ... Opening part 1b ... Recessed part 2 ... Fixing jig 3 ... Rotating table 3a ... Air suction hole 4 ... Displacement sensor 5 ... Air flow path 10 ... Inspection machine main body support frame 11 ... Bearing part 11a
... Air flow path 11b ... Bearing bearing part 12 ... Rotation support shaft 13 ... Rotation drive gear 14 ... Drive gear 15 ... Air flow path 16 ... Timing signal decoder M ... Electric motor
Claims (1)
の開口部１ａにて装着固定し回転動作可能な回転台３
と、該回転台３に装着固定される前記被検査容器１の容
器内を負圧吸引する回転台３に備えたエアー吸引孔３ａ
と、該回転台３に載置固定される被検査容器１の外壁面
に沿って適宜個所に離間対向設置した非接触式の変位セ
ンサー４とを備えたことを特徴とするプラスチック成形
容器偏肉自動検査機。1. A turntable 3 capable of rotating by mounting and fixing a plastic-molded container 1 to be inspected at its opening 1a.
And an air suction hole 3a provided in the rotary table 3 for negatively sucking the inside of the container 1 to be inspected mounted and fixed to the rotary table 3.
And a non-contact type displacement sensor 4 which is installed at an appropriate location along the outer wall surface of the container 1 to be inspected mounted and fixed on the rotary table 3 so as to face each other. Automatic inspection machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11148792A JP3191246B2 (en) | 1992-04-30 | 1992-04-30 | Automatic inspection machine for uneven thickness of plastic molded containers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11148792A JP3191246B2 (en) | 1992-04-30 | 1992-04-30 | Automatic inspection machine for uneven thickness of plastic molded containers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05306911A true JPH05306911A (en) | 1993-11-19 |
| JP3191246B2 JP3191246B2 (en) | 2001-07-23 |
Family
ID=14562520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11148792A Expired - Fee Related JP3191246B2 (en) | 1992-04-30 | 1992-04-30 | Automatic inspection machine for uneven thickness of plastic molded containers |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3191246B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7010863B1 (en) | 2004-01-26 | 2006-03-14 | Owens-Brockway Glass Container Inc. | Optical inspection apparatus and method for inspecting container lean |
-
1992
- 1992-04-30 JP JP11148792A patent/JP3191246B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7010863B1 (en) | 2004-01-26 | 2006-03-14 | Owens-Brockway Glass Container Inc. | Optical inspection apparatus and method for inspecting container lean |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3191246B2 (en) | 2001-07-23 |
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