JPH05261773A - Method for detecting discharge of molded piece - Google Patents
Method for detecting discharge of molded pieceInfo
- Publication number
- JPH05261773A JPH05261773A JP35274291A JP35274291A JPH05261773A JP H05261773 A JPH05261773 A JP H05261773A JP 35274291 A JP35274291 A JP 35274291A JP 35274291 A JP35274291 A JP 35274291A JP H05261773 A JPH05261773 A JP H05261773A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molded product
- light
- discharge
- molded
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/7626—Measuring, controlling or regulating the ejection or removal of moulded articles
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は成形機において金型から
成形品が排出されたか否かを光学的に検知する成形品の
排出検知方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded product discharge detection method for optically detecting whether a molded product has been discharged from a mold in a molding machine.
【０００２】[0002]
【従来の技術】従来、射出成形機やダイヤキャスト機等
の成形機において、型開きした金型内から成形品が排出
されたか否かを光学的に検知する方法としては次に挙げ
る方法が知られている。 （ａ）金型下方に配設したシュータに光学的センサを取
付け、これにより、金型から排出された成形品がシュー
タ上を落下する際に光学的センサの光を横切るため、こ
れを検知する。 （ｂ）検出点が金型に付着した成形品位置に合うように
光学的センサを配設し、これにより、成形品排出動作終
了後において成形品付着部へ直接投光し、成形品残留に
よる光の遮断がないか否かにより検知する。 （ｃ）金型キャビティへ投光するとともに、反射光を光
学式センサにより検出し、その反射光量の差に基づいて
検知する。2. Description of the Related Art Conventionally, the following method is known as a method for optically detecting whether or not a molded product is discharged from an opened mold in a molding machine such as an injection molding machine or a diamond casting machine. Has been. (A) An optical sensor is attached to the shooter arranged below the mold, and when the molded product discharged from the mold crosses the light of the optical sensor when falling on the shooter, this is detected. .. (B) An optical sensor is arranged so that the detection point is aligned with the position of the molded product attached to the mold, whereby light is directly projected onto the molded product attachment portion after the completion of the molded product discharge operation, and the molded product remains. It is detected by whether or not the light is blocked. (C) The light is projected onto the mold cavity, the reflected light is detected by an optical sensor, and it is detected based on the difference in the reflected light amount.
【０００３】[0003]
【発明が解決しようとする問題点】上述した（ａ）〜
（ｃ）の方法によれば、成形品の排出を一応検知するこ
とはできるが、いずれも次のような問題点がある。先
ず、（ａ）の方法は成形品の一部がセンサの光線を横切
れば、これによって、例えば電気接点等が作動して成形
品が排出されたことを検知してしまう。したがって、こ
の方法は成形品が単品の場合には問題ないが複数取りの
場合には一部の成形品が金型に残留しても次サイクルへ
移行してしまい、金型や成形機の損傷を招く原因とな
る。Problems to be Solved by the Invention (a)-
According to the method (c), it is possible to detect the discharge of the molded product, but all of them have the following problems. First, in the method (a), if a part of the molded product crosses the light beam of the sensor, this detects that the molded product is ejected by operating an electrical contact or the like. Therefore, this method is not a problem when the molded product is a single product, but when multiple products are taken, even if some of the molded products remain in the mold, the process shifts to the next cycle and damage to the mold and molding machine occurs. Cause to cause.
【０００４】一方、（ｂ）の方法は通常コア型に光電管
等（光学式センサ）を設けて行っている。しかし、キャ
ビティ型（固定型）に成形品が残留した場合にはコア型
（可動型）側には成形品が存在しなくなり、次サイクル
へ移行してしまう。このため２度押し等の弊害を生じ
（ａ）同様に金型等の損傷を招く。また、複数取りの場
合には複数組の光電管等を必要とし、取付けスペース等
の点から小物部品の成形品には利用が困難となる。On the other hand, the method (b) is usually carried out by providing a photoelectric tube or the like (optical sensor) in the core type. However, when the molded product remains in the cavity mold (fixed mold), the molded product does not exist on the core mold (movable mold) side, and the process proceeds to the next cycle. For this reason, a problem such as double pressing occurs and damage to the mold or the like occurs as in (a). Further, in the case of taking a plurality of pieces, a plurality of sets of phototubes and the like are required, and it is difficult to use them for molded articles of small parts from the viewpoint of mounting space and the like.
【０００５】他方、（ｃ）の方法は成形機周辺の採光条
件や金型面の汚れ等によって検出する反射光量が変動
し、正確な検出を行うことができない。このため、周辺
の管理が大変となるとともに、微妙な光量変化を検出す
る必要性から高感度の光学的センサが要求され、しかも
小物部品等の成形品については検知が困難であった。以
上、（ａ）〜（ｃ）いずれの方法も成形品の確実な排出
検知という点では不充分であり、また利用できる成形品
の大きさ、種類等が制限される。On the other hand, in the method (c), the amount of reflected light to be detected varies depending on the lighting conditions around the molding machine, dirt on the mold surface, etc., and accurate detection cannot be performed. For this reason, it becomes difficult to manage the surroundings, and a high-sensitivity optical sensor is required due to the need to detect a subtle change in the amount of light, and it is difficult to detect molded articles such as small parts. As described above, any of the methods (a) to (c) is insufficient in terms of reliable discharge detection of the molded product, and the size, type, etc. of the molded product that can be used are limited.
【０００６】[0006]
【問題点を解決するための手段】本発明は上述した従来
の問題点を次に示す成形品の排出検知方法によって解決
した。つまり、本発明に係る成形品の排出検知方法は、
特に型開時に成形品が金型から排出されたか否かを、検
出点を金型に付着した成形品位置に合わせた光学式セン
サによって検出する成形品の排出検知方法において、成
形品排出動作開始前における光学式センサ１が検出状態
であること、及び成形品排出動作終了後における光学式
センサ１が無検出状態であること、の双方の条件を満足
することにより、成形品が排出されたということを検知
するようにしたことを特徴とする。The present invention has solved the above-mentioned conventional problems by the following method for detecting discharge of a molded product. That is, the method for detecting the discharge of a molded product according to the present invention is
In particular, in the molded product discharge detection method that detects whether a molded product has been discharged from the mold when the mold is opened by an optical sensor that matches the detection point with the position of the molded product attached to the mold The molded product is discharged by satisfying both conditions that the optical sensor 1 is in the detection state before and the optical sensor 1 is in the non-detection state after the discharging operation of the molded product. It is characterized in that it detects the thing.
【０００７】[0007]
【作用】次に、本発明の作用について説明する。本発明
に係る成形品の排出検知方法では最初に金型に成形品が
付着しているか否かを検出する。つまり、成形品がコア
型側に付着していることを確認する。そして、この後に
突出し動作等の成形品排出動作を行い、この動作の終了
した後、無検出、つまり成形品のないことを確認して成
形品が排出されたことを検知する。Next, the operation of the present invention will be described. In the molded product discharge detection method according to the present invention, it is first detected whether or not the molded product is attached to the mold. That is, it is confirmed that the molded product is attached to the core mold side. Then, after that, a molded product discharging operation such as a projecting operation is performed, and after this operation is completed, no detection is performed, that is, it is confirmed that there is no molded product, and it is detected that the molded product has been discharged.
【０００８】[0008]
【実施例】以下には本発明に係る好適な実施例を図面に
基づいて詳細に説明する。先ず、本発明を明確にするた
め図１を参照して射出成形機の概略構成について説明す
る。同図は射出成形機における金型およびその周辺の横
断平面図（図２中Ｉ−Ｉ線断面を含む）である。射出成
形機Ｍは射出装置１０を備え、さらに同装置１０には射
出シリンダ１１ａとこのシリンダ１１ａの先端に設けた
射出ノズル１１ｂを備える。射出成形機Ｍは例えばイン
ラインスクリュ式の場合にはシリンダ１１ａにスクリュ
を内装し、射出ノズル１１ｂから成形材料を射出する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below in detail with reference to the drawings. First, in order to clarify the present invention, a schematic configuration of an injection molding machine will be described with reference to FIG. The figure is a cross-sectional plan view (including a cross-section taken along line I-I in FIG. 2) of a mold and its periphery in the injection molding machine. The injection molding machine M includes an injection device 10, and the device 10 further includes an injection cylinder 11a and an injection nozzle 11b provided at the tip of the cylinder 11a. In the case of the in-line screw type, for example, the injection molding machine M has a screw installed in a cylinder 11a and injects a molding material from an injection nozzle 11b.
【０００９】一方、射出装置１０の前方には金型装置１
２を備える。この装置１２は射出ノズル１１ｂに受接す
るように配した固定型（キャビティ型）１３を備え、こ
の固定型１３は固定盤１４に固定する。固定型１３に対
向して可動型（コア型）１５を配し、この可動型１５は
一体の可動盤１６によって固定型１３に対しタイバー１
７、１７上を進退動する。固定型１３と可動型１５とは
金型１８を構成し、キャビティ１８ａ、ランナ１８ｂ、
スプル１８ｃ等を有する公知の金型を構成する。なお、
符号Ｗは成形された２個取りの成形品を示す。また、可
動型１５の内部空間にはキャビティ１８ａに臨んで突出
しピン１９を備え、このピン１９は後端に一体の突出し
板２０を有する。その他、図１において２１と可動盤１
６内に設けた突出シリンダであり、内部に前記突出し板
２０を前進せしめる突出ピストン２２を備える。２３は
突出ピン１９に挿入した戻しスプリング、また２４は可
動盤１６を進退動せしめ型締め、型開きを行う駆動ラム
である。On the other hand, in front of the injection device 10, the mold device 1
2 is provided. This device 12 is provided with a fixed mold (cavity type) 13 arranged so as to be received by the injection nozzle 11 b, and this fixed mold 13 is fixed to a fixed platen 14. A movable die (core die) 15 is arranged so as to face the fixed die 13, and the movable die 15 is attached to the fixed die 13 by a tie bar 1 by an integrated movable platen 16.
Move back and forth on the 7th and 17th. The fixed mold 13 and the movable mold 15 constitute a mold 18, which includes a cavity 18a, a runner 18b,
A known mold having the sprue 18c and the like is constructed. In addition,
Reference sign W indicates a molded two-piece molded product. In addition, the internal space of the movable die 15 is provided with a protruding pin 19 facing the cavity 18a, and the pin 19 has an integral protruding plate 20 at the rear end. Besides, in FIG. 1, reference numeral 21 and movable plate 1
6 is a protruding cylinder provided in the inside of which a protruding piston 22 for advancing the protruding plate 20 is provided. Reference numeral 23 is a return spring inserted in the protruding pin 19, and reference numeral 24 is a drive ram for moving the movable platen 16 forward and backward to clamp the mold and open the mold.
【００１０】次に図２を参照して本発明に係る排出検知
方法を実施するに好適な検知装置の一例を説明する。同
図は図１中の矢視II方向の斜視図である。尚、図２にお
いて図１と同一部分には同一符号を付した。先ず、可動
型１５の両側部にはブロック２、３を夫々型締めに支障
のないように固設する。各ブロック２、３には成形品Ｗ
の製品部Ｗ１、Ｗ２に対応して貫通孔４・・・を穿設す
る。貫通孔４・・・は各製品部Ｗ１、Ｗ２を通過する一
直線上に夫々形成する。したがって、実施例では各ブロ
ック２、３に２個づつの貫通孔４を備える。一方、可動
盤１６の上部側には発光素子を内蔵した１個の発光器５
と受光素子を内蔵した１個の受光器６からなる光学式セ
ンサ１を配設する。発光器５には光ファイバコード７の
一端を接続し、他端は２つのコード部分に分岐させてブ
ロック２の貫通孔４、４に夫々挿入固定する。また、受
光器６にも同様に光フィイバコード８の一端を接続し、
他端はブロック３の貫通孔４、４にそれぞれ挿入固定し
た一対のコード部分を集合させてなる。Next, an example of a detection device suitable for carrying out the discharge detection method according to the present invention will be described with reference to FIG. This figure is a perspective view in the direction of arrow II in FIG. In FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals. First, the blocks 2 and 3 are fixed to both sides of the movable mold 15 so as not to interfere with mold clamping. Molded product W on each block 2 and 3
Through holes 4 are formed corresponding to the product parts W1 and W2. The through holes 4 ... Are respectively formed on a straight line passing through the product parts W1 and W2. Therefore, in the embodiment, each block 2 and 3 is provided with two through holes 4. On the other hand, on the upper side of the movable plate 16 is one light emitting device 5 having a light emitting element built therein.
An optical sensor 1 including one light receiver 6 having a built-in light receiving element is arranged. One end of the optical fiber cord 7 is connected to the light emitter 5, and the other end is branched into two cord portions, which are inserted and fixed in the through holes 4 and 4 of the block 2, respectively. Also, connect one end of the optical fiber cord 8 to the light receiver 6 as well,
The other end is formed by assembling a pair of cord portions inserted and fixed in the through holes 4 and 4 of the block 3.
【００１１】このように構成することにより、発光器５
からの照射光は光ファイバコード７を通りブロック２に
おける先端から投光される。光線は成形品Ｗが排出され
ていない状態では遮光される光フィイバコード７の先端
で受光し、更に同コード７を通って受光器６で受光す
る。尚、受光器６は排出動作開始前において製品部Ｗ
１、Ｗ２のうち１個でも足りなければこれを感知し、排
出動作終了後において１個でも残っていなければ感知し
ない２つの感度を工程に応じて切換えて使用する。この
場合、感度ではなく発光器の光量を切換えてもよい。With this configuration, the light emitter 5
The irradiation light from the laser beam passes through the optical fiber cord 7 and is projected from the tip of the block 2. The light ray is received by the tip of the optical fiber cord 7 which is shielded when the molded product W is not discharged, and further passes through the cord 7 and is received by the light receiver 6. In addition, the light receiver 6 has a product part W before the discharge operation is started.
If at least one of 1 and W2 is insufficient, this is sensed, and if at least one remains after the discharging operation, no sensitivity is sensed. Two sensitivities are switched depending on the process and used. In this case, the light amount of the light emitter may be switched instead of the sensitivity.
【００１２】次に、本発明に係る成形品の排出検知方法
について全体の動作と併せて説明する。 （ａ）先ず、射出装置においては計量工程、射出工程が
行われ、これにより金型１８には材料が充填される。そ
の後、金型１８は、所定の冷却時間を経て型開きが行わ
れる。 （ｂ）次いで、発光器５をＯＮとする。この発光器５の
ＯＮしたときから一定時間経過しても受光器６が受光し
ない場合、つまり可動型１５に正常に成形品Ｗが付着し
ている場合には発光器５のＯＦＦにし、次の突出し工程
に移行する。他方、発光器５のＯＮにより、受光器６が
受光した場合には成形品Ｗの一部が固定型１３に残って
いるおそれがあるため、突出し工程へは移行せず、型開
きせず、型開きしたままで警報等を発する。或いは、発
光器５をＯＦＦにし、サイクルを中断する。そして、オ
ペレータがマニュアル操作で成形品を取り除いた後、再
度最初から自動運転を開始する。 （ｃ）一方、突出し工程（排出動作）に移行した場合に
は、突出しシリンダ２１を作動させて突出ピン１９を前
進させる。これにより成形品Ｗは可動型１５より取り除
かれる。突出し後は、突出しシリンダ２１を逆作動させ
突出しピストン２２を後退させる。これにより、突出し
ピン１９もスプリング２３により元の位置に復帰する。
以上の突出し工程における排出動作は成形品の形状等に
よって適宜回数選択、設定して行われる。 （ｄ）このような排出動作が完了すると再び発光器５を
ＯＮにする。この発光器５のＯＮにより受光器６が受光
した場合には、可動型１５から成形品Ｗが正常に排出さ
れていることを意味するため、受光器５をＯＦＦにす
る。これで１サイクル工程を終了する。Next, the method for detecting discharge of a molded product according to the present invention will be described together with the overall operation. (A) First, in the injection device, a measuring process and an injection process are performed, whereby the mold 18 is filled with the material. After that, the mold 18 is opened after a predetermined cooling time. (B) Next, the light emitter 5 is turned on. When the light receiver 6 does not receive light for a certain time after the light emitter 5 is turned on, that is, when the molded product W is normally attached to the movable mold 15, the light emitter 5 is turned off. Move to the protruding step. On the other hand, when the light receiver 6 receives the light by turning on the light emitter 5, there is a possibility that a part of the molded product W may remain in the fixed mold 13. Therefore, the process does not proceed to the projecting step and the mold is not opened. An alarm etc. is issued with the mold opened. Alternatively, the light emitter 5 is turned off and the cycle is interrupted. Then, after the operator manually removes the molded product, the automatic operation is restarted from the beginning. (C) On the other hand, when the protrusion process (discharging operation) is performed, the protrusion cylinder 21 is operated to move the protrusion pin 19 forward. As a result, the molded product W is removed from the movable mold 15. After the ejection, the ejection cylinder 21 is reversely operated and the ejection piston 22 is retracted. As a result, the protruding pin 19 also returns to its original position by the spring 23.
The ejection operation in the projecting step described above is performed by selecting and setting the number of times as appropriate according to the shape of the molded product and the like. (D) When the discharging operation is completed, the light emitting device 5 is turned on again. When the light receiver 6 receives light when the light emitter 5 is turned on, it means that the molded product W is normally discharged from the movable mold 15, and therefore the light receiver 5 is turned off. This completes one cycle process.
【００１３】他方、発光器５をＯＮし、これにより一定
時間経過しても受光器６が受光しない場合には、金型
（可動型）に成形品（又はその一部）が残留しているお
それがあるため発光器５をＯＦＦし、更に警報等を発し
てサイクルを中断する。そして、オペレータがマニュア
ル操作して成形品Ｗを取り除き再度最初から自動運転を
開始する。以上実施例中（ａ）〜（ｂ）を連続的に繰り
返すことによって成形及び排出検知を行う。尚、実施例
のように光ファイバコードを用いることにより、小さな
成形品（製品）でもそのピッチごとに検出用の光路を設
定することができ、また成形品の取り数にかかわらず投
光器、受光器を含む光学的センサと、付随するアンプ等
は１台で足りることになる。これにより大幅なコストダ
ウンと小型コンパクト化を図れる。On the other hand, when the light-emitting device 5 is turned on and the light-receiving device 6 does not receive light after a certain period of time, the molded product (or part thereof) remains in the mold (movable mold). Since there is a risk, the light emitting device 5 is turned off, an alarm is issued, and the cycle is interrupted. Then, the operator manually operates to remove the molded product W and restart the automatic operation from the beginning again. Molding and discharge detection are performed by continuously repeating (a) and (b) in the above embodiment. By using an optical fiber cord as in the embodiment, even a small molded product (product) can set an optical path for detection for each pitch, and a light emitter and a light receiver can be used regardless of the number of molded products. The optical sensor including, and the accompanying amplifier and the like are sufficient in one unit. As a result, it is possible to significantly reduce the cost and reduce the size and size.
【００１４】以上、実施例について詳細に説明したが本
発明はこのような実施例に限定されるものではない。例
えば光学式センサはアクティブ方式をもちいたが、ＣＣ
Ｄ等を利用したパッシブ方式であってもよい。また、金
型側面に直接光電管を設置するような型式でもよい。更
に、光学式センサの検出場所は製品部のみに限らず、ス
プル部、ランナ部等にも同様に設置してもよい。Although the embodiments have been described in detail above, the present invention is not limited to such embodiments. For example, the optical sensor used the active method, but CC
A passive method using D or the like may be used. Further, a type in which the photoelectric tube is directly installed on the side surface of the mold may be used. Further, the detection location of the optical sensor is not limited to the product section, but may be similarly installed in the sprue section, the runner section or the like.
【００１５】[0015]
【発明の効果】このように、本発明に係る成形品の排出
検知方法は、型開時に成形品が金型から排出されたか否
かを、検出点を金型に付着した成形品位置に合わせた光
学式センサによって検出する成形品の排出検知方法にお
いて、成形品排出動作前における光学式センサが検出状
態であること、及び成形品排出動作後における光学的セ
ンサが無検出状態であること、の双方の条件を満足する
ことにより成形品が排出されたということを検知するよ
うにしたため、成形品が正規でない位置に付着していた
り、排出が完全に行われなかったことを容易に且つ確実
に検知することができ成形品の排出不良による金型や成
形機の損傷を防止できる。また、装置は従来のものをそ
のまま利用できるため構成簡易で低コストに実施でき
る。更に、好適な実施例により光ファイバコードを利用
し検出点を複数に分散すれば製品ごとの検出を確実、且
つ容易に検出でき、しかも小型コンパクト化、低コスト
化を達成できる。As described above, according to the method for detecting the discharge of a molded product according to the present invention, whether the molded product is discharged from the mold when the mold is opened or not is matched with the position of the molded product attached to the mold. In the method for detecting the discharge of a molded product detected by the optical sensor, the optical sensor before the discharge operation of the molded product is in the detection state, and the optical sensor after the discharge operation of the molded product is in the non-detection state. Since it is detected that the molded product is discharged by satisfying both conditions, it is easy and reliable to confirm that the molded product is attached to an irregular position or that the discharge was not completed completely. It is possible to detect and prevent damage to the mold and the molding machine due to defective discharge of the molded product. Further, since the conventional device can be used as it is, the structure is simple and can be implemented at low cost. Further, according to the preferred embodiment, if optical fiber cords are used and the detection points are dispersed into a plurality of points, the detection for each product can be performed reliably and easily, and further downsizing, compactification and cost reduction can be achieved.
【図１】射出成形機における金型及びその周辺の横断平
面図（図２中Ｉ−Ｉ線断面を含む）である。FIG. 1 is a cross-sectional plan view (including a cross section taken along line I-I in FIG. 2) of a mold and its periphery in an injection molding machine.
【図２】図１中の矢視II方向の斜視図である。FIG. 2 is a perspective view taken along arrow II in FIG.
１ 光学式センサ ２、３ ブロック ５ 発光器 ６ 受光器 ７、８ 光ファイバコード 1 Optical sensor 2, 3 block 5 Light emitter 6 Light receiver 7, 8 Optical fiber code
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【手続補正書】[Procedure amendment]
【提出日】平成４年７月２４日[Submission date] July 24, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】全文[Name of item to be corrected] Full text
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【書類名】 明細書[Document name] Statement
【発明の名称】 成形品の排出検知方法[Title of Invention] Method for detecting discharge of molded product
【特許請求の範囲】[Claims]
【発明の詳細な説明】Detailed Description of the Invention
【０００１】[0001]
【産業上の利用分野】本発明は成形品の排出検知方法に
関し、更に詳細には、型開時に、金型を構成する型の一
方に付着した成形品等を他方の型から取り出した後、前
記型の一方に付着した成形品等を取り出して金型から排
出する際に、金型からの成形品等の排出を検知する成形
品の排出検知方法に関する。FIELD OF THE INVENTION The present invention relates to a method for detecting discharge of a molded product.
In more detail, when the mold is opened, one of the molds that make up the mold
After taking out the molded product etc. attached to one side from the other mold,
Take out the molded product attached to one side of the mold and remove it from the mold.
The present invention relates to a molded product discharge detection method for detecting discharge of a molded product or the like from a mold when the molded product is discharged.
【０００２】[0002]
【従来の技術】従来、射出成形機やダイヤキャスト機等
の成形機において、型開きした金型内から成形品が排出
されたことを光学的に検知する方法としては次に挙げる
方法が知られている。 （ａ）金型下方に配設したシュータに光学的センサを取
付け、金型から排出された成形品がシュータ上を落下す
る際に、光学的センサの光を横切るため、これを検知す
る。 （ｂ）検出点が金型に付着した成形品位置に合うように
光学的センサを配設し、成形品排出動作終了後において
成形品付着部へ直接投光し、成形品残留による光の遮断
の有無を検知する（例えば特開昭５５ー１２８４４０号
公報参照）。 （ｃ）金型キャビティへ投光するとともに、反射光を光
学式センサにより検出し、その反射光量の差に基づいて
成形品の残留の有無を検知する（例えば特公昭４２ー２
０８６３号公報参照）。2. Description of the Related Art Conventionally, the following methods have been known as methods for optically detecting the discharge of a molded product from a mold that has been opened in a molding machine such as an injection molding machine and a diamond casting machine. ing. Mounting an optical sensor on the chute which is arranged to (a) the mold downward, when the molded article is discharged from the mold to fall on the chute, for crossing the light of optical sensor, it detects this. (B) An optical sensor is arranged so that the detection point matches the position of the molded product attached to the mold, and after the completion of the discharging operation of the molded product, the light is directly projected onto the molded product adhering portion, and the light is blocked by the residual of the molded product.
Presence / absence of detection (for example, JP-A-55-128440)
See the bulletin) . (C) The light is projected onto the mold cavity, the reflected light is detected by an optical sensor, and the presence or absence of a molded product is detected based on the difference in the reflected light amount (for example, Japanese Patent Publication No. 42-2).
0863) .
【０００３】[0003]
【発明が解決しようとする課題】上述した（ａ）〜
（ｃ）の方法によれば、成形品の排出を一応検知するこ
とはできる。しかしながら、いずれにも次のような課題
がある。先ず、（ａ）の方法は成形品の一部がセンサの
光線を横切れば、成形品が排出されたことを検知してし
まう。従って、この方法は成形品が単品の場合には問題
ないが複数取りの場合には一部の成形品が金型に残留し
ても次サイクルへ移行してしまい、金型や成形機の損傷
を招く原因となる。THE INVENTION Problems to be Solved] described above (a) ~
According to the method of (c), it is possible to detect the discharge of the molded product for the time being . However, both of them have the following problems . First, thereby detecting that the method is part of the molded article (a) if Yokogire rays sensor, which formed molded article is discharged. Therefore , this method is not a problem when the molded product is a single product, but when multiple products are taken, even if some of the molded products remain in the mold, the process shifts to the next cycle and damage to the mold and the molding machine. Cause to cause.
【０００４】一方、（ｂ）の方法は通常コア型に光電管
等（光学式センサ）を設けて行っている。しかし、キャ
ビティ型（固定型）に成形品が残留した場合にはコア型
（可動型）側には成形品が存在しなくなり、次サイクル
へ移行してしまう。このため２度押し等の弊害を生じ
（ａ）同様に金型等の損傷を招く。また、複数取りの場
合には複数組の光電管等を必要とし、取付けスペース等
の点から小物部品の成形品には利用が困難となる。On the other hand, the method (b) is usually carried out by providing a photoelectric tube or the like (optical sensor) in the core type. However, when the molded product remains in the cavity mold (fixed mold), the molded product does not exist on the core mold (movable mold) side, and the process proceeds to the next cycle. For this reason, a problem such as double pressing occurs and damage to the mold or the like occurs as in (a). Further, in the case of taking a plurality of pieces, a plurality of sets of phototubes and the like are required, and it is difficult to use them for molded articles of small parts from the viewpoint of mounting space and the like.
【０００５】他方、（ｃ）の方法は成形機周辺の採光条
件や金型面の汚れ等によって検出する反射光量が変動
し、正確な検出を行うことができない。このため、周辺
の管理が煩雑になると共に、微妙な光量変化を検出する
必要性から高感度の光学的センサが要求され、しかも小
物部品等の成形品については検知が困難であった。以
上、（ａ）〜（ｃ）いずれの方法も成形品等が金型から
排出されたことの確実な検知という点では不充分であ
り、また利用できる成形品等の大きさ、種類等が制限さ
れる。そこで、本発明の目的は、上述した従来の課題を
解決し、成形品等が金型から排出されたことの確実な検
知を容易に行うことができる成形品の排出検知方法を提
供することにある。 On the other hand, in the method (c), the amount of reflected light to be detected varies depending on the lighting conditions around the molding machine, dirt on the mold surface, etc., and accurate detection cannot be performed. For this reason, the management of the surroundings becomes complicated, and a high-sensitivity optical sensor is required due to the need to detect a subtle change in light quantity, and it is difficult to detect a molded product such as a small component. Above from (a) ~ (c) is also molded product is mold either method
Is insufficient in terms of reliable detection knowledge of what has been discharged, also the size of the molded article such as available, type and the like are limited. Therefore, the object of the present invention is to solve the above-mentioned conventional problems.
Solved and surely checked that the molded product etc. were discharged from the mold
Providing a method for detecting the discharge of molded products that can be easily known
To serve.
【０００６】[0006]
【課題を解決するための手段】本発明は、前記発明の目
的を下記に示す成形品の排出検知方法によって達成した
ものである。つまり、本発明は、型開時に、金型を構成
する型の一方に付着した成形品等を他方の型から取り出
した後、前記型の一方に付着した成形品等を取り出して
金型から排出する際に、金型からの成形品等の排出を検
知する成形品の排出検知方法において、該金型の型の一
方が装着された基盤に設けられた一対の発光器本体と受
光器本体との各々から光ファイバコードが延設されてい
ると共に、前記発光器本体より延出された光ファイバコ
ードの先端から受光器本体より延出された光ファイバコ
ードの先端に向けて投光される光が、前記金型の型の一
方に付着して取り出された成形品等によって遮光される
位置に、前記光ファイバコードの各々の先端が配設され
て成る成形品の排出検知装置を使用し、下記及びの
条件を満足したとき、成形品等の金型からの排出が検知
されることを特徴とする成形品の排出検知方法にある。 前記金型の型の一方に付着した成形品等を取り出す取
出動作前に、受光器本体が非受光状態にあること、 成形品の一連の成形品等の排出動作が終了した際に、
受光器本体が受光状態にあること、 尚、本発明において言う「成形品等」とは、成形品に付
着して金型から排出されるランナ部やスプル部も含むこ
とを意味する。 Means for Solving the Problems The present invention is, eyes of the invention
Was achieved by the following method for detecting the discharge of molded products.
It is a thing. That is, the present invention configures the mold when the mold is opened.
Take out the molded product attached to one mold from the other mold
After that, take out the molded product etc. attached to one side of the mold
When ejecting from the mold, check the ejection of molded products from the mold.
In a known method for detecting the discharge of a molded product, one of the molds of the mold is used.
The pair of light emitter main body and receiver mounted on the base
An optical fiber cord is extended from each of the main body of the optical device.
The optical fiber core extended from the main body of the light emitter.
The optical fiber cord extended from the receiver body from the tip of the cord.
The light emitted toward the tip of the mold is one of the molds of the mold.
Light is blocked by the molded product that is attached to one side and taken out.
At the position, the tip of each of the optical fiber cords is arranged.
Using the discharge detection device for molded products consisting of
When conditions are satisfied, discharge of molded products from the mold is detected
The method for detecting discharge of a molded article is characterized in that Take out the molded product attached to one side of the mold
Before the ejecting operation , the receiver main body is in the non-light receiving state, and when the discharge operation of a series of molded articles etc. is completed,
The main body of the light receiver is in a light receiving state, and the term "molded product" in the present invention means that the molded product is
Also includes the runner and sprue parts that are worn and discharged from the mold.
Means and.
【０００７】[0007]
【作用】本発明によれば、最初に金型を構成する型の一
方に成形品等が付着して他方の型から取り出されている
ことを検出し、次いで一連の成形品等の排出動作が終了
した際に、前記型の一方に成形品等が非存在であること
を確認して成形品等が排出されたことを検知できる。こ
のため、一連の成形品等の排出動作が終了したとき、成
形品等が金型を構成する型のいずれか一方に残留してい
る状態を確実に検知でき、成形品等の残留に因る金型の
損傷等を防止できる。また、本発明において使用する排
出検知装置は、光を投光する投光口及び光を受光する受
光口の各々は、発光部本体及び受光部本体の各々から延
出された光ファイバコードの先端であるため、複数取り
の場合であっても、成形品のピッチ毎に光路を設定で
き、小物部品等の成形品についても検知ができる。更
に、成形装置に設ける発光部本体及び受光部本体は一対
でよく、一個取り金型と複数取り金型との金型交換の際
には、発光部本体及び受光部本体の各々から延出されて
いる光ファイバコードのみを一個取り用と複数取り用と
に変更することによって容易に対応できるため、金型交
換作業を容易化しつつ成形装置の小型化も図ることがで
きる。 According to the present invention, one of the molds forming the mold is first
A molded product, etc. is attached to one side and is taken out from the other mold
Is detected, and then a series of ejection operations of molded products, etc. are completed.
When there is no molded product etc. on one side of the mold
By confirming, it is possible to detect that the molded product or the like has been discharged. This
Therefore, when the discharge operation of a series of molded products is completed,
The shaped product remains in either one of the molds
It is possible to reliably detect the state of
It can prevent damage. In addition, the discharge used in the present invention
The output detection device includes a light emitting port that emits light and a light receiving unit that receives the light.
Each of the light ports extends from each of the light emitting unit body and the light receiving unit body.
Since the issued is the tip of the light off § Ibakodo, multiple-up
Even in the case of, the optical path can be set for each pitch of the molded product.
It is also possible to detect molded products such as small parts. Change
In addition, the light-emitting unit body and the light-receiving unit body provided in the molding apparatus are paired.
When changing between single-use and multiple-use dies,
Is extended from each of the light emitting unit body and the light receiving unit body.
There are two types of fiber optic cords
It can be easily handled by changing to
It is possible to make the molding device smaller while facilitating the replacement work.
Wear.
【０００８】[0008]
【実施例】以下には本発明に係る好適な実施例を図面に
基づいて詳細に説明する。先ず、本発明を明確にするた
め図１を参照して射出成形機の概略構成について説明す
る。同図は射出成形機における金型およびその周辺の横
断平面図（図２中Ｉ−Ｉ線断面を含む）である。射出成
形機Ｍは射出装置１０を備え、更に同装置１０には射出
シリンダ１１ａとこのシリンダ１１ａの先端に設けた射
出ノズル１１ｂを備える。射出成形機Ｍは例えばインラ
インスクリュ式の場合にはシリンダ１１ａにスクリュを
内装し、射出ノズル１１ｂから成形材料を射出する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below in detail with reference to the drawings. First, in order to clarify the present invention, a schematic configuration of an injection molding machine will be described with reference to FIG. The figure is a cross-sectional plan view (including a cross-section taken along line I-I in FIG. 2) of a mold and its periphery in the injection molding machine. The injection molding machine M includes an injection device 10, and the device 10 further includes an injection cylinder 11a and an injection nozzle 11b provided at the tip of the cylinder 11a. In the case of the in-line screw type, for example, the injection molding machine M has a screw installed in a cylinder 11a and injects a molding material from an injection nozzle 11b.
【０００９】一方、射出装置１０の前方には金型装置１
２を備える。この装置１２は射出ノズル１１ｂに受接す
るように配した固定型（キャビティ型）１３を備え、こ
の固定型１３は固定盤１４に固定する。固定型１３に対
向して可動型（コア型）１５を配し、この可動型１５は
一体の可動盤１６によって固定型１３に対しタイバー１
７、１７上を進退動する。固定型１３と可動型１５とは
金型１８を構成し、キャビティ１８ａ、ランナ１８ｂ、
スプル１８ｃ等を有する公知の金型を構成する。尚、符
号Ｗは成形された２個取りの成形品を示す。また、可動
型１５の内部空間にはキャビティ１８ａに臨んで突出ピ
ン１９を備え、このピン１９は後端に一体の突出板２０
を有する。その他、図１において、２１は可動盤１６内
に設けられた突出シリンダであり、内部に突出板２０を
前進せしめる突出ピストン２２を備える。２３は突出ピ
ン１９に挿入した戻しスプリング、また２４は可動盤１
６を進退動せしめ型締め、型開きを行う駆動ラムであ
る。On the other hand, in front of the injection device 10, the mold device 1
2 is provided. This device 12 is provided with a fixed mold (cavity type) 13 arranged so as to be received by the injection nozzle 11 b, and this fixed mold 13 is fixed to a fixed platen 14. A movable die (core die) 15 is arranged so as to face the fixed die 13, and the movable die 15 is attached to the fixed die 13 by a tie bar 1 by an integrated movable platen 16.
Move back and forth on the 7th and 17th. The fixed mold 13 and the movable mold 15 constitute a mold 18, which includes a cavity 18a, a runner 18b,
A known mold having the sprue 18c and the like is constructed. In addition , the code | symbol W shows the molded two-piece molded product. A protrusion pin 19 is provided in the inner space of the movable die 15 so as to face the cavity 18a. The pin 19 has a protrusion plate 20 integrated at the rear end.
Have. Other, 1, 21 is a projecting cylinder provided in the movable platen 16, and a projecting piston 22 allowed to advance the projecting plate 20 therein. Reference numeral 23 is a return spring inserted in the protruding pin 19, and 24 is the movable platen 1.
6 is a drive ram for moving the mold 6 forward and backward and clamping the mold to open the mold.
【００１０】次に図２を参照して本発明に係る排出検知
方法を実施するに好適な検知装置の一例を説明する。同
図は図１中の矢視II方向の斜視図である。尚、図２にお
いて図１と同一部分には同一符号を付した。先ず、可動
型１５の両側部にはブロック２、３を各々型締めに支障
のないように固設する。各ブロック２、３には成形品Ｗ
の製品部Ｗ１、Ｗ２に対応して貫通孔４・・・を穿設す
る。貫通孔４・・・は各製品部Ｗ１、Ｗ２を通過する一
直線上に各々形成する。従って、本実施例では各ブロッ
ク２、３に２個づつの貫通孔４を備える。一方、可動盤
１６の上部側には発光素子を内蔵した１個の発光器本体
５と受光素子を内蔵した１個の受光器本体６からなる光
学式センサ１を配設する。発光器本体５には光ファイバ
コード７の一端を接続し、他端は２つのコード部分に分
岐させてブロック２の貫通孔４、４に各々挿入固定す
る。また、受光器本体６にも同様に光フィイバコード８
の一端を接続し、他端はブロック３の貫通孔４、４にそ
れぞれ挿入固定した一対のコード部分を集合させてな
る。Next, an example of a detection device suitable for carrying out the discharge detection method according to the present invention will be described with reference to FIG. This figure is a perspective view in the direction of arrow II in FIG. In FIG. 2, the same parts as those in FIG. 1 are designated by the same reference numerals. First, on both sides of the movable mold 15 is fixed so as not interfering blocks 2 and 3 each clamping. Molded product W on each block 2 and 3
Through holes 4 are formed corresponding to the product parts W1 and W2. Through holes 4 ... are each formed in a straight line passing through each product portion W1, W2. What slave, in the present embodiment comprises a through-hole 4 of the two at a time in each block 2 and 3. On the other hand, on the upper side of the movable platen 16, the optical sensor 1 including one light emitter main body 5 having a light emitting element incorporated therein and one light receiver main body 6 having a light receiving element incorporated therein is disposed. Emitter connected to one end of the optical fiber cord 7 to the main body 5 and the other end is branched into two code portions for each inserted into and fixed in the through-hole 4, 4 blocks 2. In addition, the optical fiber cord 8 is similarly provided to the light receiver body 6.
Is connected to one end and the other end is formed by assembling a pair of cord portions inserted and fixed in the through holes 4 and 4 of the block 3.
【００１１】このように構成することにより、発光器本
体５からの照射光は光ファイバコード７を通りブロック
２における先端から投光される。光線は成形品Ｗが排出
されていない状態では遮光されるが、排出された場合に
は光ファイバコード８の先端で受光し、更に同コード８
を通って受光器本体６で受光する。本実施例で使用され
る受光器本体６は、型開時に、金型を構成する型の一方
に付着した成形品等を他方の型から取り出した際に、製
品部Ｗ１、Ｗ２のうち１個でも足りなければこれを感知
する。一方、一連の成形品等の排出動作が終了した際
に、製品部Ｗ１、Ｗ２のうち１個でも残っていなければ
感知しない２つの感度を工程に応じて切換えて使用す
る。この場合、感度ではなく発光器本体５の光量を切換
えてもよい。[0011] With this configuration, the light emitting device present
The irradiation light from the body 5 passes through the optical fiber cord 7 and is projected from the tip of the block 2. The light is blocked when the molded product W is not discharged, but when it is discharged
Is received at the tip of the optical fiber cord 8 and the cord 8
The light is received by the light receiver main body 6 through. Used in this example
When the mold is opened, the light receiver main body 6 is one of the molds forming the mold.
When one or more of the product parts W1 and W2 are insufficient when the molded product or the like attached to is taken out from the other mold, this is sensed. On the other hand, when the discharge operation of a series of molded products is completed
In addition, two sensitivities that are not sensed if at least one of the product parts W1 and W2 does not remain are used by switching according to the process. In this case, the light amount of the light emitter main body 5 may be switched instead of the sensitivity.
【００１２】次に、本発明に係る成形品の排出検知方法
について全体の動作と併せて説明する。 （ｉ）先ず、射出装置においては計量工程、射出工程が
行われ、これにより金型１８には材料が充填される。そ
の後、金型１８は、所定の冷却時間を経て型開きが行わ
れる。 （ii）次いで、発光器本体５をＯＮとする。この発光器
本体５をＯＮしたときから一定時間経過しても受光器本
体６が受光しない場合、つまり可動型１５に正常に成形
品Ｗが付着している場合には発光器本体５をＯＦＦに
し、次の突出工程に移行する。他方、発光器本体５のＯ
Ｎにより、受光器本体６が受光した場合には成形品Ｗの
一部が固定型１３に残っているおそれがあるため、突出
工程へは移行せず、型開きしたままで警報等を発する。
或いは、発光器本体５をＯＦＦにし、サイクルを中断す
る。そして、オペレータがマニュアル操作で成形品等を
取り除いた後、再度最初から自動運転を開始する。(iii ）一方、突出工程（排出動作）に移行した場合に
は、突出シリンダ２１を作動させて突出ピン１９を前進
させる。これにより成形品Ｗは可動型１５より取り出さ
れる。成形品Ｗを可動型１５から取り出した後は、突出
シリンダ２１を逆作動させ突出ピストン２２を後退させ
る。これにより、突出ピン１９もスプリング２３により
元の位置に復帰する。以上の突出工程における成形品の
排出動作は成形品の形状等によって適宜回数選択、設定
して行われる。 （iv）このような排出動作が完了すると、再び発光器本
体５をＯＮにする。この発光器本体５のＯＮにより受光
器本体６が受光した場合には、可動型１５から成形品Ｗ
が正常に排出されていることを意味するため、受光器本
体５をＯＦＦにする。これで１サイクル工程を終了す
る。Next, the method for detecting discharge of a molded product according to the present invention will be described together with the overall operation. ( I ) First, in the injection device, a measuring process and an injection process are performed, whereby the mold 18 is filled with the material. After that, the mold 18 is opened after a predetermined cooling time. ( Ii ) Next, the light emitter main body 5 is turned on. This light emitter
Photoreceiver present even after the lapse of a predetermined time from the time of ON of the main body 5
When the body 6 does not receive light, that is, when the molded product W is normally attached to the movable die 15, the light emitter main body 5 is turned off, and the process proceeds to the next projecting step. On the other hand, O of the light emitter main body 5
Due to N, when the light receiver main body 6 receives light, a part of the molded product W may remain in the fixed mold 13. Therefore, the process does not proceed to the projecting step, and an alarm or the like is issued with the mold opened.
Alternatively, the light emitter main body 5 is turned off and the cycle is interrupted. The operator after removing the molded article or the like by manual operation, to start the automatic operation from the beginning again. (iii ) On the other hand, when the process goes to the projecting step (discharging operation), the projecting cylinder 21 is operated to advance the projecting pin 19. Thus the molded article W are <br/> of Eject from the movable mold 15. After taking out the molded product W from the movable mold 15 , the protruding cylinder 21 is reversely operated and the protruding piston 22 is retracted. As a result, the protruding pin 19 is also returned to its original position by the spring 23. Appropriate number selected by the shape of the molded article is a molded article of <br/> discharge operation in the above ejection steps are performed by setting. (Iv) If this discharge operation is completed, the re-emitter
Turn on body 5. When the light receiver main body 6 receives light when the light emitter main body 5 is turned on, the molded product W is moved from the movable mold 15.
It means that the has been normally discharged, photodetector present
Turn off body 5. This completes one cycle process.
【００１３】他方、発光器本体５をＯＮし、これにより
一定時間経過しても受光器本体６が受光しない場合に
は、金型（可動型）に成形品（又はその一部）が残留し
ているおそれがあるため発光器本体５をＯＦＦし、更に
警報等を発してサイクルを中断する。そして、オペレー
タがマニュアル操作して成形品Ｗを取り除き再度最初か
ら自動運転を開始する。以上実施例中（ｉ）〜（iv）を
連続的に繰り返すことによって成形及び排出検知を行
う。本実施例のように光ファイバコードを用いることに
より、小さな成形品（製品）でもそのピッチごとに検出
用の光路を設定することができ、また成形品の取り数に
かかわらず投光器本体、受光器本体を含む光学的センサ
と、付随するアンプ等は１台で足りることになる。これ
により大幅なコストダウンと小型コンパクト化を図れ
る。尚、成形品の検知部は、成形品本体のみに限らず、
成形品のスプルやランナであってもよい。 On the other hand, when the main body 5 of the light emitter is turned on and the main body 6 of the light receiver does not receive light after a certain period of time, the molded product (or a part thereof) remains in the mold (movable mold). Therefore, the light emitter main body 5 is turned off, and an alarm or the like is further issued to interrupt the cycle. Then, the operator manually operates to remove the molded product W and restart the automatic operation from the beginning again. Molding and discharge detection are performed by continuously repeating ( i ) to ( iv ) in the above examples. By using the optical fiber cord as in the present embodiment, even a small molded product (product) can set an optical path for detection for each pitch, and the main body of the projector and the light receiver regardless of the number of molded products. The optical sensor including the main body and the accompanying amplifier and the like are sufficient as one unit. As a result, it is possible to significantly reduce the cost and reduce the size and size. The detector of the molded product is not limited to the main body of the molded product,
It may be a sprue or runner of a molded product.
【００１４】[0014]
【発明の効果】本発明によれば、成形品等が正規でない
位置に付着していたり、排出が完全に行われなかったこ
とを容易に且つ確実に検知することができ、成形品の排
出不良による金型や成形機の損傷を防止できる。しか
も、光ファイバコードを利用し検出点を複数箇所に容易
に分散できるため、金型に残留する成形品等の検出を確
実に且つ容易に検出でき、装置の小型コンパクト化、低
コスト化を達成できる。 According to the present invention, the molded product is not regular.
Check that they are not attached to the location or that they were not completely ejected.
Can be easily and reliably detected, and
It is possible to prevent damage to the mold and molding machine due to defective ejection. Only
Also, it is easy to use multiple detection points by using an optical fiber code.
Since it can be dispersed in the mold, it is possible to accurately detect the molded products remaining in the mold.
Really and easily detected, the device is small and compact, and low
Cost reduction can be achieved.
【図面の簡単な説明】[Brief description of drawings]
【図１】射出成形機における金型及びその周辺の横断平
面図である。FIG. 1 is a cross-sectional plan view of a mold and its periphery in an injection molding machine.
【図２】図１中の矢視II方向の斜視図である。FIG. 2 is a perspective view taken along arrow II in FIG.
【符号の説明】 １ 光学式センサ ２、３ ブロック ５ 発光器本体 ６ 受光器本体 ７、８ 光ファイバコード[Explanation of symbols] 1 optical sensor 2, 3 block 5 light emitter main body 6 light receiver main body 7, 8 optical fiber code
Claims (1)
否かを、検出点を金型に付着した成形品位置に合わせた
光学式センサによって検出する成形品の排出検知方法に
おいて、次の（ａ）、（ｂ）の条件を満足することによ
り成形品が排出されたことを検知する成形品の排出検知
方法。 （ａ） 成形品排出動作開始前における前記光学式セン
サが検出状態、 （ｂ） 成形品排出動作終了後における前記光学式セン
サが無検出状態、1. A method for detecting ejection of a molded product, comprising detecting whether or not the molded product is ejected from the mold when the mold is opened by an optical sensor whose detection point is aligned with the position of the molded product attached to the mold. A method for detecting ejection of a molded article, which detects that a molded article has been ejected by satisfying the conditions (a) and (b). (A) The optical sensor is in a detection state before the molding product discharging operation is started, (b) The optical sensor is in a non-detection state after the molding product discharging operation is finished,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35274291A JPH0659674B2 (en) | 1991-12-16 | 1991-12-16 | Detection method of molded product discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35274291A JPH0659674B2 (en) | 1991-12-16 | 1991-12-16 | Detection method of molded product discharge |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17283385A Division JPS6233617A (en) | 1985-08-06 | 1985-08-06 | Detection of discharge of molding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05261773A true JPH05261773A (en) | 1993-10-12 |
| JPH0659674B2 JPH0659674B2 (en) | 1994-08-10 |
Family
ID=18426129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35274291A Expired - Lifetime JPH0659674B2 (en) | 1991-12-16 | 1991-12-16 | Detection method of molded product discharge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0659674B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007136820A (en) * | 2005-11-17 | 2007-06-07 | Nippon Parison Kk | Device for detecting erroneous demolding of injection-molded product |
| KR20220042689A (en) * | 2020-09-28 | 2022-04-05 | 한재형 | Method for monitoring the state of carrying in/out of press material using laser sensor and its monitoring system |
-
1991
- 1991-12-16 JP JP35274291A patent/JPH0659674B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007136820A (en) * | 2005-11-17 | 2007-06-07 | Nippon Parison Kk | Device for detecting erroneous demolding of injection-molded product |
| KR20220042689A (en) * | 2020-09-28 | 2022-04-05 | 한재형 | Method for monitoring the state of carrying in/out of press material using laser sensor and its monitoring system |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0659674B2 (en) | 1994-08-10 |
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