JP4346019B2 - Squeegee parallel detection device for screen printer - Google Patents

Squeegee parallel detection device for screen printer Download PDF

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JP4346019B2
JP4346019B2 JP2003417651A JP2003417651A JP4346019B2 JP 4346019 B2 JP4346019 B2 JP 4346019B2 JP 2003417651 A JP2003417651 A JP 2003417651A JP 2003417651 A JP2003417651 A JP 2003417651A JP 4346019 B2 JP4346019 B2 JP 4346019B2
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squeegee
detection
parallelism
plate
detecting
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JP2005178012A (en
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至 立花
慎一 坂本
昭二 南雲
博之 江部
裕介 西野
正樹 山下
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ニューロング精密工業株式会社
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Description

本発明は、スクリーン印刷機におけるスキージの平行検出装置に関している。   The present invention relates to a parallel detection device for a squeegee in a screen printing machine.

スクリーン印刷機においては、スキージがスクリーン面に対し平行状態で接触することが高精度の印刷が行える条件となる。通常、スクリーンは印刷テーブルに対し平行に設置されているが、スキージが平行状態でスクリーン面に接触しないと、印刷時にスキージがスクリーン面を押付ける押圧力が一定にならず印刷精度を向上させることができない。 In a screen printing machine, the squeegee is in contact with the screen surface in a parallel state, which is a condition for performing high-precision printing. Normally, the screen is installed in parallel to the printing table, but if the squeegee is in parallel and does not touch the screen surface, the pressing force with which the squeegee presses the screen surface during printing will not be constant, improving the printing accuracy. I can't.

下記の特許文献は、スキージの平行度を検出するための装置ではないが、スキージの平行度を検出できる装置が記載されている。
実開平7−18839号の全文明細書
Although the following patent document is not an apparatus for detecting the parallelism of the squeegee, an apparatus capable of detecting the parallelism of the squeegee is described.
Full text of Japanese Utility Model Publication No.7-18839

特許文献1に記載された発明は、スキージの押込み量を一定に維持するためのものであって、スキージの押込み量調整装置(20)が、スキージの押込み上下動機構(21)とスキージの下端位置を検出する検出制御手段(31)を備えたものである。ここで、検出制御手段(31)は、一方が投光部、他方が受光部となる透過式の光電センサー(32)であり、スキージの走行方向に対し斜めの光検出経路(F)を形成するように配設し、その光検出経路(F)の高さ位置をスキージの下端縁位置に設定するものである。この従来発明は、光電センサー(32)による光検出経路(F)をスキージの走行方向に対し斜めに形成したので、スキージが走行範囲の中央位置にあるときに、スキージの中央位置の高さを検出しても、スキージが走行した場合にはスキージの中央位置から左右のいずれか一方の縁部に至るまでの高さを検出できると言うものである。   The invention described in Patent Document 1 is for maintaining the squeegee push-in amount constant, and the squeegee push-in amount adjusting device (20) includes a squeegee push-up / down movement mechanism (21) and a lower end of the squeegee. A detection control means (31) for detecting the position is provided. Here, the detection control means (31) is a transmissive photoelectric sensor (32), one of which is a light projecting unit and the other of which is a light receiving unit, and forms an oblique light detection path (F) with respect to the traveling direction of the squeegee. The height position of the light detection path (F) is set to the lower edge position of the squeegee. In this conventional invention, since the light detection path (F) by the photoelectric sensor (32) is formed obliquely with respect to the traveling direction of the squeegee, the height of the central position of the squeegee is adjusted when the squeegee is at the central position of the traveling range. Even if it detects, when the squeegee travels, the height from the center position of the squeegee to the left or right edge can be detected.

特許文献1に記載された発明は、印刷時のスキージの押込み量を常時一定に維持するための装置であり、光電センサーによる検出制御手段の光検出経路をスキージの走行方向に対し斜めに形成したので、スキージの縁部が2本の光検出経路を同時に閉塞したときに検出が完了したものと設定すれば、スキージの平行度検出装置にも適用できるが、当該発明に限らず、一般に光電式の検出手段は、検出するもの以外の他の要因によっても作動することがあり信頼性に問題があった。   The invention described in Patent Document 1 is an apparatus for constantly maintaining the pressing amount of the squeegee at the time of printing, and the light detection path of the detection control means by the photoelectric sensor is formed obliquely with respect to the traveling direction of the squeegee. Therefore, if it is set that the detection is completed when the edge of the squeegee simultaneously closes the two light detection paths, the present invention can be applied to a squeegee parallelism detection device. This detection means may operate due to factors other than those to be detected, and has a problem in reliability.

本発明は、スキージの平行度を検出するに際し、スキージが検出手段を直接作動するようにして検出手段の信頼度を高めたスキージ平行検出装置を提供することを課題としている。   An object of the present invention is to provide a squeegee parallel detection device in which the squeegee parallelism directly increases the reliability of the detection means by directly operating the detection means when detecting the parallelism of the squeegee.

解決手段は、スキージの平行度を検出する平行度検出手段が、印刷テーブルに設けた流体シリンダのロッドに連結されて該ロッドと共に移動し頂部にスキージと接触する受けプレートを設けた検出移動板と、上記流体シリンダに隣接して設けた位置検出センサーと、上記検出移動板に設けた下降位置検出ドグとからなり、上記平行度検出手段はスキージの長手方向に対して複数個設けられており、スキージが下降して上記検出移動板が上記受けプレートと接触して当該受けプレートを押し下げ、定位置で上記各位置検出センサーが上記検出移動板に設けた上記複数の下降位置検出ドグを同時に検出した時にスキージの下降を停止してスキージの印刷テーブルに対する平行度を自動設定するようにしたことを特徴とするものである。 The detecting means includes a detection moving plate in which the parallelism detecting means for detecting the parallelism of the squeegee is connected to a rod of a fluid cylinder provided on the printing table and moves together with the rod to contact the squeegee at the top. A position detection sensor provided adjacent to the fluid cylinder and a lowered position detection dog provided on the detection moving plate, and a plurality of the parallelism detection means are provided in the longitudinal direction of the squeegee, squeegee is lowered in contact with the respective detection movement plates the receiving plate depressed the receiving plate, at the same time detecting the respective position sensor in place is a plurality of lowered position detecting dog provided on the detected movable plate In this case, the descent of the squeegee is stopped and the parallelism of the squeegee with respect to the print table is automatically set .

本発明は、スキージが下降して受プレートを押し下げ、定位置で位置検出センサーが上記受プレートと共に下降する検出移動板に設けた下降位置検出ドグを検出するものであるから、検出手段の各部材が互いに接触し合うことでスキージの平行度を判定することと、受プレートを含む平行度検出手段がスキージに対し複数個設けられているから、各平行度検出手段が同時に作動することでスキージの平行度を判定するので、誤動作が少なく高精度な検出が行えるものである。   In the present invention, the squeegee is lowered to push down the receiving plate, and the position detection sensor detects the lowered position detection dog provided on the detection moving plate that is lowered together with the receiving plate at a fixed position. Since the parallelism of the squeegee is determined by contacting each other, and a plurality of parallelism detection means including a receiving plate are provided for the squeegee, Since the parallelism is determined, it is possible to perform highly accurate detection with few malfunctions.

図1は本発明の検出手段とスキージの対応位置を示す正面図、図2は検出手段とスキージの対応位置を示す拡大正面図、図3は同側面図である。 FIG. 1 is a front view showing the corresponding position between the detecting means and the squeegee of the present invention, FIG. 2 is an enlarged front view showing the corresponding position between the detecting means and the squeegee, and FIG. 3 is a side view thereof.

これらの図において、スクリーン印刷機の印刷テーブル1にスキージの平行度を検出する平行度検出手段2が複数箇所、本実施形態では2箇所に設けられている。上記並行度検出手段2は、印刷テーブル1の前板1aに設けた流体シリンダ3と該流体シリンダ3のロッド4と連結して上下方向に移動可能な検出移動板5を有している。また、検出移動板5は、本体部分5aが上記流体シリンダ3の正面に延設されており、該本体部分5aがガイド6に案内されて上下方向に移動するようになっている。7は上記流体シリンダ3に隣接して設けた位置検出センサーであり、本実施形態はフォトセンサである。フォトセンサ7は、上記検出移動板5の本体部分5aに設けた下降位置検出ドグ8によって図示しないスキージの上下駆動機構に信号を発信し、スキージの下降を停止させるものである。なお、スキージの上下駆動機構はスキージヘッドに2箇所設けられている。   In these figures, parallelism detecting means 2 for detecting the parallelism of the squeegee is provided at a plurality of locations, in this embodiment at two locations, on the printing table 1 of the screen printing machine. The parallelism detecting means 2 has a fluid cylinder 3 provided on the front plate 1 a of the printing table 1 and a detection moving plate 5 that is connected to the rod 4 of the fluid cylinder 3 and can move in the vertical direction. The detection moving plate 5 has a main body portion 5a extending in front of the fluid cylinder 3, and the main body portion 5a is guided by a guide 6 to move in the vertical direction. Reference numeral 7 denotes a position detection sensor provided adjacent to the fluid cylinder 3, and this embodiment is a photo sensor. The photo sensor 7 transmits a signal to a squeegee vertical drive mechanism (not shown) by a lowered position detection dog 8 provided on the main body portion 5a of the detection moving plate 5 to stop the squeegee from descending. Note that two squeegee vertical drive mechanisms are provided in the squeegee head.

上記流体シリンダ3は低圧に設定されており、後述するスキージの下降によってロッド4が下降するものである。また、上記平行度検出手段2は、2箇所に設けられているから、各平行度検出手段2が有する位置検出センサー7は、2箇所同時に作動したときにスキージの上下移動機構に駆動停止の信号を発信する。 The fluid cylinder 3 is set to a low pressure, and the rod 4 is lowered by the lowering of the squeegee described later. Since the parallelism detecting means 2 is provided at two locations, the position detecting sensor 7 of each parallelism detecting means 2 is a signal for stopping driving to the squeegee vertical movement mechanism when the two locations are simultaneously operated. To send.

また、上記位置検出センサー7は、センサユニット9に設けられており、該センサユニット9は印刷テーブル1の前板1aに取付け位置が変更できるように設けられている。すなわち、センサユニット9は取付けネジ10に長孔を介して設けられると共に、当該センサユニット9は前板1aに設けた調整ネジ11と当接させているから、取付けネジ10を緩めて調整ネジ11を回転すれば、センサユニット9に設けた位置検出センサー7の取付け位置が決められる。この位置で取付けネジ10を締付けてセンサユニット9及び位置検出センサー7を固定する。 The position detection sensor 7 is provided in a sensor unit 9, and the sensor unit 9 is provided on the front plate 1 a of the printing table 1 so that the mounting position can be changed. That is, the sensor unit 9 is provided on the mounting screw 10 through a long hole, and the sensor unit 9 is in contact with the adjustment screw 11 provided on the front plate 1a. Is rotated, the mounting position of the position detection sensor 7 provided in the sensor unit 9 is determined. At this position, the mounting screw 10 is tightened to fix the sensor unit 9 and the position detection sensor 7 .

上記検出移動板5の頂部には、スキージ20と接触する受プレート12が設けられている。   A receiving plate 12 that contacts the squeegee 20 is provided on the top of the detection moving plate 5.

本発明は上記の構成からなるものであって次に作用を説明する。スキージ20を図示しない上下駆動機構により平行度検出手段2の受プレート12に向かって下降させる。受プレート12は検出移動板5とともに流体シリンダ3のロッド4により上昇保持されており、スキージ20が接触するとスキージ20の下降により押し下げられる。2つの受プレート12が検出移動板5を介して下降し、当該各検出移動板5がいずれも定位置に達すると、各位置検出センサー7が下降位置検出ドグ8を検出してスキージが平行に下降したことを判定し、スキージの上下駆動機構を停止し、スキージ20は定位置に停止する。 The present invention has the above-described configuration, and the operation will be described next. The squeegee 20 is lowered toward the receiving plate 12 of the parallelism detecting means 2 by a vertical drive mechanism (not shown). The receiving plate 12 is lifted and held by the rod 4 of the fluid cylinder 3 together with the detection moving plate 5, and is pushed down when the squeegee 20 is lowered. When the two receiving plates 12 are lowered via the detection moving plate 5 and each of the detection moving plates 5 reaches a fixed position, each position detection sensor 7 detects the lowered position detection dog 8 and the squeegee is parallel. It is determined that the squeegee has been lowered, the squeegee vertical drive mechanism is stopped, and the squeegee 20 stops at a fixed position.

平行度検出手段2及びスキージ上下駆動機構は、左右に2箇所設置されているから、左右に設けた平行度検出手段2のフォトセンサ7が同時にONすることでスキージ20の印刷テーブル1に対する平行度が自動設定される。   Since the parallelism detection means 2 and the squeegee vertical drive mechanism are installed at two places on the left and right, the parallelism of the squeegee 20 with respect to the print table 1 is turned on when the photosensors 7 of the parallelism detection means 2 provided on the left and right are simultaneously turned on. Is automatically set.

検出手段とスキージの対応位置を示す正面図。The front view which shows the corresponding | compatible position of a detection means and a squeegee. 検出手段とスキージの対応位置を示す拡大正面図。The enlarged front view which shows the corresponding position of a detection means and a squeegee. 図2の側面図。The side view of FIG.

符号の説明Explanation of symbols

1 印刷テーブル
2 平行度検出手段
3 流体シリンダ
4 ロッド
5 検出移動板
6 ガイド
7 フォトセンサ
8 下降位置検出ドグ
9 センサユニット
10 取付けネジ
11 調整ネジ
12 受プレート
20 スキージ
DESCRIPTION OF SYMBOLS 1 Printing table 2 Parallelism detection means 3 Fluid cylinder 4 Rod 5 Detection moving plate 6 Guide 7 Photo sensor 8 Lowering position detection dog 9 Sensor unit 10 Mounting screw 11 Adjustment screw 12 Receiving plate 20 Squeegee

Claims (1)

スキージの平行度を検出する平行度検出手段(2)が、印刷テーブル(1)に設けた流体シリンダ(3)のロッド(4)に連結されて該ロッドと共に移動し頂部にスキージと接触する受けプレート(12)を設けた検出移動板(5)と、上記流体シリンダに隣接して設けた位置検出センサー(7)と、上記検出移動板に設けた下降位置検出ドグ(8)とからなり、上記平行度検出手段はスキージの長手方向に対して複数個設けられており、スキージが下降して上記検出移動板が上記受けプレートと接触して当該受けプレートを押し下げ、定位置で上記位置検出センサーが上記検出移動板に設けた上記複数の下降位置検出ドグを同時に検出した時にスキージの下降を停止してスキージの印刷テーブルに対する平行度を自動設定するようにしたことを特徴とするスクリーン印刷機におけるスキージ平行検出装置。 A parallelism detecting means (2) for detecting the parallelism of the squeegee is connected to the rod (4) of the fluid cylinder (3) provided on the printing table (1) and moves together with the rod to contact the squeegee at the top. A detection moving plate (5) provided with a plate (12), a position detection sensor (7) provided adjacent to the fluid cylinder, and a lowered position detection dog (8) provided on the detection moving plate ; the above parallelism detection means is provided with a plurality with respect to the longitudinal direction of the squeegee, the squeegee is lowered in contact with the respective detection movement plates the receiving plate depressed the receiving plate, each position at a fixed position detection sensors so as to automatically set the parallelism with respect to the squeegee printing table to stop the descent of the squeegee when it detects simultaneously a plurality of lowered position detecting dog provided on the detected movable plate Squeegee parallel detection apparatus in a screen printing machine, characterized in that.
JP2003417651A 2003-12-16 2003-12-16 Squeegee parallel detection device for screen printer Expired - Lifetime JP4346019B2 (en)

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JP5582770B2 (en) 2009-11-30 2014-09-03 東海精機株式会社 Squeegee parallel adjustment device and squeegee parallel adjustment method in a screen printing machine
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