JPS58135547A - Inter-panel/mask distance measuring equipment for color cathode-ray tube - Google Patents
Inter-panel/mask distance measuring equipment for color cathode-ray tubeInfo
- Publication number
- JPS58135547A JPS58135547A JP1764982A JP1764982A JPS58135547A JP S58135547 A JPS58135547 A JP S58135547A JP 1764982 A JP1764982 A JP 1764982A JP 1764982 A JP1764982 A JP 1764982A JP S58135547 A JPS58135547 A JP S58135547A
- Authority
- JP
- Japan
- Prior art keywords
- panel
- distance
- mask
- probe
- surface position
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/42—Measurement or testing during manufacture
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Length Measuring Devices Characterised By Use Of Acoustic Means (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明はシャドウマスク方式カラー陰極線管のパネルお
よびシャドウマスク間の距離を迅速かつ正確に測定し得
る測定装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a measuring device capable of quickly and accurately measuring the distance between a panel and a shadow mask of a shadow mask type color cathode ray tube.
シャドウマスク方式カラー陰極線管では、パネルとその
内側に配置されるシャドウマスクとの間隔が所定の精度
に保たれていることが必要とされるので、陰極線管の製
造工程においては、上記パネルの内向とマスク内面間の
距離測定が行なわれる。Shadow mask type color cathode ray tubes require that the distance between the panel and the shadow mask placed inside the panel be maintained at a predetermined precision. The distance between the mask and the inner surface of the mask is measured.
従来、この種の測定は、例えば特公昭４５−２６６５３
号公報に記載されているように、可変距離測定子を備え
たスペースゲージをパネルの内面とマスクフレーム組立
体の間に配置することによって行なっていた。Conventionally, this type of measurement has been carried out, for example, in Japanese Patent Publication No. 45-26653.
As described in the above publication, this was accomplished by placing a space gauge equipped with a variable distance measuring element between the inner surface of the panel and the mask frame assembly.
背景技術では、スペースゲージなパネルとマスクフレー
ム組立体の間に入れるため、マスクフレーム組立体の脱
着操作が必要であり、測定のための基準および再組立て
等に時間がかかる上、自動化が雌かしかった。In the background technology, it is necessary to attach and detach the mask frame assembly in order to insert it between the space gauge panel and the mask frame assembly, and it takes time to set standards for measurement and reassemble it, and it is difficult to automate. It was true.
また、スペースゲージは可変距離測定素子をマスク外面
に接触させるため、マスクに変形や損傷を与える危険が
あり、しかも、陰極線管の管種別にスペースゲージを用
意する必要があった。Furthermore, since the space gauge brings the variable distance measuring element into contact with the outer surface of the mask, there is a risk of deforming or damaging the mask, and moreover, it is necessary to prepare a space gauge for each type of cathode ray tube.
また更に、スペースゲージの可変距離測定素子はマスク
のパネル側の外面に接触するため、本来、必要とされる
マスク内面からパネル内面までの距離を測定することが
できず、従って、マスクの板厚のばらつきが直接、測定
誤差になるという不都合があった。Furthermore, since the variable distance measuring element of the space gauge comes into contact with the outer surface of the panel side of the mask, it is not possible to measure the required distance from the inner surface of the mask to the inner surface of the panel. This has the disadvantage that the variation in this directly results in a measurement error.
本発明は背景技術における上述の如き不都合を除去し、
フェースプレート内面とマスク内面間距離を迅速かつ正
確に測定できるカラー陰極線管のパネル・マスク間距離
測定装置を提供することを目的とするものである。The present invention eliminates the above-mentioned disadvantages in the background art,
It is an object of the present invention to provide a panel-mask distance measuring device for a color cathode ray tube that can quickly and accurately measure the distance between the inner surface of a face plate and the inner surface of a mask.
本発明の装置は上述の目的を達成するため、パネルの厚
さおよびこのフェース面位置と基準面間距離を超音波厚
さ針探触子とリニアスケール等から成る検出器によって
測定し、また、シャドウマスクの内面位置と、この内面
位置および前記基準面間距離なうず電流式の非接触変位
針プローブとリニアスケール等から成る検出器によって
測定するよう構成されている。In order to achieve the above-mentioned object, the device of the present invention measures the thickness of the panel and the distance between the face surface position and the reference surface using a detector consisting of an ultrasonic thickness needle probe, a linear scale, etc. The inner surface position of the shadow mask and the distance between this inner surface position and the reference surface are measured by a detector consisting of an eddy current type non-contact displacement needle probe, a linear scale, and the like.
以下、図面を参照して本発明の実施：例を説明する。 Hereinafter, examples of implementing the present invention will be described with reference to the drawings.
一第１図において、架台１には、上面に複数個のパネル
構***置決め用ベース２が固定され、またその下方には
下部フレーム６が固定されている。1, a plurality of panel structure positioning bases 2 are fixed to the upper surface of a pedestal 1, and a lower frame 6 is fixed below the bases 2. As shown in FIG.
下部フレーム６に取付けたプローブ駆動用制御モータ４
のボールねじ５（＝は下部測定ヘッド６が螺合しており
、この測定ヘッドはボールねじ５が回転すると、スライ
ドガイド７ｍ 、７ｂに案内されて上下動する。Probe drive control motor 4 attached to the lower frame 6
A lower measuring head 6 is screwed into the ball screw 5 (=), and when the ball screw 5 rotates, this measuring head is guided by slide guides 7m and 7b and moves up and down.
下部測定ヘッド６の上面には、うず電流式の非接触変位
ｔ［プローブ８が上方に同けて植設されており、このプ
ローブは架台１の中央に設けた透孔１ａを通して上方に
変位できるようにされている。An eddy current type non-contact displacement probe 8 is installed on the upper surface of the lower measurement head 6, and this probe can be displaced upward through a through hole 1a provided in the center of the pedestal 1. It is like that.
架台１上に固定した上部フレームの基準面９上には駆動
シリンダー１０と２個のリニアスケール１１ ．１２が
下向に向けて取付けられており、駆動シリンダー１０の
ピストン下端には駆動板１６が固定されている。A drive cylinder 10 and two linear scales 11. 12 is attached facing downward, and a drive plate 16 is fixed to the lower end of the piston of the drive cylinder 10.
この駆動板１３は駆動シリンダー１０が動作するとスラ
イドガイド１４ｍ 、 １４に＋に案内されて上下動す
る。This drive plate 13 is guided by slide guides 14m and 14 and moves up and down when the drive cylinder 10 operates.
駆動板１６の下方（＝はばね１ｓａ 、１５ｂを介して
上部測定ヘッド１６が弾性的に連絡されて（する。The upper measuring head 16 is elastically connected to the lower part of the drive plate 16 via springs 1sa and 15b.
上部測定ヘッド１６の下面には第２１＝良く示されてい
るように超音波厚さ針用探触子１７カ”−Ｉｙ。On the lower surface of the upper measuring head 16 is a 21st ultrasonic thickness needle probe 17"-Iy, as clearly shown.
付けられており、またその周囲には複数本の液体滴下ノ
ズル１８が探触子１７に向けて配列されている。A plurality of liquid dripping nozzles 18 are arranged around the probe 17 toward the probe 17.
これらのノズル１８は可撓性のホース１９を介して電磁
弁２０に接続されている。These nozzles 18 are connected to a solenoid valve 20 via a flexible hose 19.
電磁弁２０は配管２１を通して液体タンク（図示せず）
に連結され、超音波の伝播を良好ζ二するために探触子
１７の下面に供給される液体の滴下量と滴下タイミング
を制御する。The solenoid valve 20 is connected to a liquid tank (not shown) through a pipe 21.
is connected to and controls the amount and timing of dropping of the liquid supplied to the lower surface of the probe 17 in order to improve the propagation of the ultrasonic waves.
また、リニアスケール１１の動作桿１１私先端は常時、
上部測定ヘッド１６の上面書＝接触しており、また、リ
ニアスケール１２の動作桿１２ｍ先端は架台１の透孔１
ｂを貫通し、常時、下部測定ヘッド６の上面に接触して
いる。In addition, the tip of the operating rod 11 of the linear scale 11 is always
The top surface of the upper measurement head 16 is in contact, and the tip of the operating rod 12m of the linear scale 12 is in contact with the through hole 1 of the pedestal 1.
b, and is always in contact with the upper surface of the lower measurement head 6.
上述のように構成した本発明装置において、カラー陰極
線管のパネルＰとその内側に所定間隔をおいて収付けら
れたシャドウマスクＭから成るパネル構体ムは位置決め
用ペース２上に載置され、位置決めされる。In the apparatus of the present invention configured as described above, the panel structure consisting of the panel P of the color cathode ray tube and the shadow mask M housed inside the panel P at a predetermined interval is placed on the positioning space 2, and the panel structure is be done.
駆動シリンダー１０が制御信号を受けて動作、すると、
ピストンに押圧されて駆動板１６およびこれにばねを介
して連結された上部測定ヘッド１６が下方に移動し、超
音波厚さ針打触子１７はパネルＰの上面に軽く接触する
。When the drive cylinder 10 receives a control signal and operates,
Pressed by the piston, the driving plate 16 and the upper measuring head 16 connected thereto via a spring move downward, and the ultrasonic thickness needle contactor 17 lightly contacts the upper surface of the panel P.
この状態で電磁弁２０が動作し、探触子１７とパネルＰ
の上面の間に過当量の液体を滴下し、接触面間の音響イ
ンピーダンスを高めて超音波信号を伝わりやすくする。In this state, the solenoid valve 20 operates, and the probe 17 and panel P
Drop an excess amount of liquid between the top surfaces of the contact surfaces to increase the acoustic impedance between the contact surfaces and facilitate the transmission of ultrasound signals.
探触子１７から送信された超旨波信号はパネルＰの内側
の面で反射し、探触子１７によって受信されるので、こ
れを計算機にインプットして送受信時間差を演算するこ
とにより、パネルＰのパネル曲面法線上の犀さが検出さ
れる。The ultra-high frequency signal transmitted from the probe 17 is reflected on the inner surface of the panel P and is received by the probe 17, so by inputting this into a computer and calculating the transmission/reception time difference, The curve on the panel surface normal is detected.
それと同時に、リニアスケール１１によって基１＄Ｉ１
９から上部測定ヘッド１６までの距離が検出され、計算
機Ｃ二人力される。At the same time, the base 1$I1 is calculated by the linear scale 11.
The distance from 9 to the upper measuring head 16 is detected and entered by two people on the computer C.
一方、プローブ駆動用制御モータ４が動作すると、ボー
ルねじ５が回転し、下部測定ヘッド６およびその上面に
取付けたうず電流式の非接触変位計プローブ８は上昇す
る。On the other hand, when the probe drive control motor 4 operates, the ball screw 5 rotates, and the lower measurement head 6 and the eddy current type non-contact displacement meter probe 8 attached to its upper surface rise.
このプローブ８は先端がンヤドウマスクＭに近づくにつ
れ、次第に出力が上昇するのでプローブ８がマスクｙに
接触する前に、その出力が予め設定した値僅二達すると
、制御モータ４を停止させ、その時点における基準１ｆ
１９と下部測定ヘッド６の間の距離をリニアスケール１
２により検出し、その値を計算機にインプットする。The output of this probe 8 gradually increases as the tip approaches the mask M, so when the output reaches a preset value of just 2 before the probe 8 comes into contact with the mask y, the control motor 4 is stopped, and at that point Standard 1f in
19 and the lower measuring head 6 using the linear scale 1.
2 and input the value into the computer.
上記において、リニアスケール１１によって検出される
上部測定ヘッド１６の上面と、探触子１７の下面間の距
離および、リニアスケール１２によって検出される上部
測定ヘッド１６の上面とうす電流式非接触変位針プロー
ブ８の先端までの距離は予め測定され・較正信号として
計算機４：記憶さ １゜れている。In the above, the distance between the upper surface of the upper measuring head 16 detected by the linear scale 11 and the lower surface of the probe 17, and the distance between the upper surface of the upper measuring head 16 detected by the linear scale 12 and the thin current type non-contact displacement needle The distance to the tip of the probe 8 is measured in advance and stored in the computer 4 as a calibration signal.
従って、リニアスケール１１．１２の出力信号を上記較
正信号（：よって較正すれば、基準面９から超音波厚さ
肘用探触子１７の接触面までの距離と、うず電流式非接
触変位針プローブ８の先端までの距離が求められるので
、両者の差を求めれば、パネルＰの法線軸上のパネルフ
ェース面上の点と、マスク内面から予め設定した距離だ
け離れた点との間の距離が得られるので、この値から上
記設定値と、超音波厚さ針探−子１７によって検出され
たパネルの厚さを紘算すれば、パネルの内面からマスク
内面までの距離を求めることができる。Therefore, if the output signals of the linear scales 11 and 12 are calibrated, the distance from the reference surface 9 to the contact surface of the ultrasonic thickness elbow probe 17 and the eddy current type non-contact displacement needle can be calculated. Since the distance to the tip of the probe 8 is determined, the difference between the two can be found as the distance between a point on the panel face surface on the normal axis of the panel P and a point a preset distance away from the inner surface of the mask. is obtained, so by calculating the above set value from this value and the thickness of the panel detected by the ultrasonic thickness needle probe 17, the distance from the inner surface of the panel to the inner surface of the mask can be found. .
なお、上記の較正や演算は、各検出器の出力を電気信号
として計算機に入力することにより容易（二実行するこ
とができる。Note that the above calibration and calculation can be easily performed by inputting the output of each detector into a computer as an electrical signal.
上述の如く、本発明は超音波厚さ針打触子によってパネ
ルの厚さを求め、また、うず電流式の非接触炭位針プロ
ーブによってシャドウマスク内面までの距離を求め、そ
の時点における超音波厚さ＃１探触子と、非接触変位針
プローブの位置をリニアスケールによって検出し、必要
な較正および演算を行なってパネルの内面からνヤドク
マスクの内面までの距離を求めるものであるから、測定
に際してパネル構体をパネルとシャドウマスクに分解す
る必要がなく、従って分解、再組立てに要する時間と手
数を低減できる上、自動測定が容易となり、また、シャ
ドウマスクは非接触式で測定されるので、これを変形さ
せたり、損傷を及ぼすおそれがない。As described above, in the present invention, the thickness of the panel is determined using an ultrasonic thickness needle probe, and the distance to the inner surface of the shadow mask is determined using an eddy current type non-contact level needle probe. The position of the #1 thickness probe and the non-contact displacement needle probe is detected by a linear scale, and the necessary calibration and calculations are performed to determine the distance from the inner surface of the panel to the inner surface of the ν Yadoku mask. There is no need to disassemble the panel structure into the panel and shadow mask, which reduces the time and effort required for disassembly and reassembly, and facilitates automatic measurement.Furthermore, since the shadow mask is measured in a non-contact manner, There is no risk of deforming or damaging it.
また、うず電流式の非接触変位計プローブの使用により
、シャドウマスクはその内面位置が検出されるので、シ
ャドウマスクの厚さにばらつきがあっても、それが測定
誤差につながることはない。Furthermore, by using an eddy current type non-contact displacement meter probe, the inner surface position of the shadow mask is detected, so even if there are variations in the thickness of the shadow mask, this will not lead to measurement errors.
第１図は本発明装置の一実施例を示す一部縦断面図、第
２図はその要部の拡大縦断面図である。
Ｐ・・・・・・・・・・・・−・・パネルＭ・・・・・
・・・・・・・・・・ シャドウマスク１ ・・・・・
・・・・−・・・・・架台２・・・・・・・・・・・・
・・・位置決め用ベース３・・・・・・・・・・・・・
・・下部フレーム４ ・・・・・・・・・・・・・・・
プローブ駆動用制御モータ５ ・・・・・・・・・・・
・・・・ ボールねじ６・・・・・・・・・・・・・・
・下部測定ヘッド７ｍ、 ７ｋ・・・スライドガイド
８・・・・・・・・・・・・・・・非接触変位針プロー
ブ９・・・・・・・・・・・・・・・上部フレームの基
準面１０ ・・・・・・・・・・・・・・・駆動シリン
ダー１１．１２ ・・・ リニアスケール１３・・・
・・・・・・・・・・・・駆動板１４ａ＊１４ｋ・・・
スライドガイド
１６・・・・・・・・・・・・・・・上部測定ヘッド１
７・・・・・・・・・・・・・・・超音波厚さ針打触子
１Ｂ・・・・・・・・・・・・・・・液体滴下ノズル２
０・・・・・・・・・・・・・・・電磁弁（７３１７）
代理人弁理士 則 近 憲 佑（ほか１゛□名）
第１図FIG. 1 is a partial vertical cross-sectional view showing an embodiment of the apparatus of the present invention, and FIG. 2 is an enlarged vertical cross-sectional view of the main part thereof. P・・・・・・・・・・・・－・Panel M・・・・・・
・・・・・・・・・ Shadow Mask 1 ・・・・・・
...
・・・Positioning base 3・・・・・・・・・・・・・・・
・Lower frame 4 ・・・・・・・・・・・・・・・
Probe drive control motor 5 ・・・・・・・・・・・・
・・・・Ball screw 6・・・・・・・・・・・・・・・
・Lower measurement head 7m, 7k...Slide guide 8...Non-contact displacement needle probe 9...Top Frame reference plane 10 ...... Drive cylinder 11.12 ... Linear scale 13 ...
...... Drive plate 14a*14k...
Slide guide 16・・・・・・・・・・・・Upper measurement head 1
7・・・・・・・・・・・・・・・Ultrasonic thickness needle contactor 1B・・・・・・・・・・・・・・・Liquid dripping nozzle 2
0・・・・・・・・・・・・Solenoid valve (7317)
Representative patent attorney Noriyuki Chika (and 1 other names) Figure 1
Claims (1)
ウマスク間距離を測定する装置において、前記パネルの
外側から、その厚さおよびこのパネルのフェース面位置
と基準面間距離を測定する検出器と、前記Ｖヤドクマス
クの内面位置を非接触で測定する検出器と、この検出器
によって検出された前記シャドウマスクの内面位置と前
記基準面間距離を測定する検出器とを備えたことを特徴
とするカラー陰極線管のパネル・マスク間距離測定装置
。 ２、パネルの犀さを測定する検出器が超音波厚さ探触子
を備えていることな特徴とする特許請求の範囲第１項記
載のカラー陰極線管のパネル・マスク間距離測定装置。 ６、ｉ／ヤドゥマスク内面位置を非接触で測定する検出
器が、うず電流式の非接触変位針プローブを備えている
ことを特徴とする特許請求の範囲第１項または第２項に
記載のカラー陰極線管のパネル・マスク間距離測定装置
。 ４、パネルフェース面位置と基準面間の距離およびシャ
ドウマスク内面位置と基準面間の距離を測定する検出器
が夫々リニアスケールから成ることを特徴とする特許請
求の範囲第１項ないし第６項に記載のカラー陰極線管の
パネル・マスク間距離測定装置。[Claims] 1. A device for measuring the distance between a shadow mask type color cathode ray panel and a shadow mask, in which the thickness of the panel and the distance between the face surface position of the panel and the reference plane are measured from the outside of the panel. A detector, a detector that non-contactly measures the inner surface position of the V-shaped mask, and a detector that measures the inner surface position of the shadow mask detected by the detector and the distance between the reference planes. Features a color cathode ray tube panel-mask distance measuring device. 2. The device for measuring the distance between a panel and a mask of a color cathode ray tube according to claim 1, wherein the detector for measuring the stiffness of the panel is equipped with an ultrasonic thickness probe. 6. The collar according to claim 1 or 2, wherein the detector for measuring the inner surface position of the i/yadu mask in a non-contact manner is equipped with an eddy current type non-contact displacement needle probe. A device for measuring the distance between a cathode ray tube panel and mask. 4. Claims 1 to 6, characterized in that the detectors for measuring the distance between the panel face surface position and the reference surface and the distance between the shadow mask inner surface position and the reference surface are each comprised of a linear scale. A color cathode ray tube panel-mask distance measuring device described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1764982A JPS58135547A (en) | 1982-02-08 | 1982-02-08 | Inter-panel/mask distance measuring equipment for color cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1764982A JPS58135547A (en) | 1982-02-08 | 1982-02-08 | Inter-panel/mask distance measuring equipment for color cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58135547A true JPS58135547A (en) | 1983-08-12 |
Family
ID=11949697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1764982A Pending JPS58135547A (en) | 1982-02-08 | 1982-02-08 | Inter-panel/mask distance measuring equipment for color cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58135547A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691594A (en) * | 1984-01-06 | 1987-09-08 | Toyota Jidosha Kabushiki Kaisha | Hydraulic control system for automatic transmission |
| US4768396A (en) * | 1985-01-30 | 1988-09-06 | Aisin Seiki Kabushiki Kaisha | Rotary cam assembly |
| US5025191A (en) * | 1989-12-21 | 1991-06-18 | Zenith Electronics Corporation | Adjustable-height shadow mask support for a flat tension mask color cathode ray tube |
| US5831169A (en) * | 1996-02-28 | 1998-11-03 | Nec Corporation | Device for measuring a distance between a panel and a shadow mask of a color CRT |
| WO2003088296A1 (en) * | 2002-04-17 | 2003-10-23 | Nippon Electric Glass Co., Ltd. | Cathode ray tube-use glass panel and inspection method therefore and inspection device therefor |
| CN108447752A (en) * | 2018-03-09 | 2018-08-24 | 南安市创培电子科技有限公司 | A kind of energy-saving lamp production line detection device |
-
1982
- 1982-02-08 JP JP1764982A patent/JPS58135547A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4691594A (en) * | 1984-01-06 | 1987-09-08 | Toyota Jidosha Kabushiki Kaisha | Hydraulic control system for automatic transmission |
| US4768396A (en) * | 1985-01-30 | 1988-09-06 | Aisin Seiki Kabushiki Kaisha | Rotary cam assembly |
| US5025191A (en) * | 1989-12-21 | 1991-06-18 | Zenith Electronics Corporation | Adjustable-height shadow mask support for a flat tension mask color cathode ray tube |
| US5831169A (en) * | 1996-02-28 | 1998-11-03 | Nec Corporation | Device for measuring a distance between a panel and a shadow mask of a color CRT |
| KR100264545B1 (en) * | 1996-02-28 | 2000-09-01 | 가네꼬 히사시 | Device for measuring a distance between a panel and shadow mask of a color crt |
| WO2003088296A1 (en) * | 2002-04-17 | 2003-10-23 | Nippon Electric Glass Co., Ltd. | Cathode ray tube-use glass panel and inspection method therefore and inspection device therefor |
| CN108447752A (en) * | 2018-03-09 | 2018-08-24 | 南安市创培电子科技有限公司 | A kind of energy-saving lamp production line detection device |
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