JP4077049B2 - Electronic component feeder - Google Patents

Description

この状態信号判定手段７０は、ＴＴＬ、ＥＣＬ、ＭＯＳ等の論理ＩＣを使用して構成しても良いし、全体の論理を組み込んだＬＳＩを使用しても良いし、あるいは、上記の入力信号を直接、インターフェイス９３に接続し、ＣＰＵ９０によってプログラム上の論理演算モジュールとして実現することもできる。
【００２０】
電子部品装着装置ＭＰが正常に稼働中の場合には、供給台１１がホームポジションに位置しないので、ホームポジション信号ＨＰは無効（＝論理”０”）、その時に安全カバーＳＣは閉じているので、開閉検出信号ＳＣＣも無効（＝論理”０”）、作業完了直後でなく作業完了プッシュボタン８２を押すこともないので、完了通知信号ＰＢも無効（＝論理”０”）、および、異常が検出されていないので、異常検出信号ＥＲＲも無効（＝論理”０”）であり、全入力信号が無効（＝論理”０”）の状態となっている。これにより、正常稼働中の状態信号判定手段７０の出力は、上記論理式（１）〜（４）より導かれるように、

となり、ホームポジション状態信号ＨＰＳは無効、ロック指示信号ＳＣＬは有効、および、アクティブ信号ＡＣＴは有効となる。以下の説明においては、上記の説明と同様に、無効は論理”０”および有効は論理”１とする。
【００２１】
したがって、この場合、すなわち装置が正常に稼働中には、供給台１１がホームポジション以外にあり、ホームポジション信号ＨＰ＝０（無効）のため、ロック指示信号ＳＣＬ＝１（有効）となって、ロックソレノイド（ロック手段）３２により安全カバーＳＣが開かないようにすることができ、これにより、作業者の安全をより確保しやすくなり、装置の安全性を向上させることができるという効果がある。
【００２２】
次に、装置が正常に稼働して、順調に電子部品の装着を進め、前記の供給台１１上の部品供給ユニットＴＣに所望の電子部品がなくなると、制御手段ＣＵのＣＰＵ９０は、前述のように、インターフェイス９３および駆動回路９４を介してスライド作動ユニット２０を制御し、供給台１１をスライドさせ、ホームポジションに位置するように移動させる。これにより、ホームポジション信号ＨＰ＝１になると、状態信号判定手段７０の各出力は、前記論理式（１）〜（４）より、

となり、ロック指示信号ＳＣＬが０になることから、ロックソレノイド３２による安全カバーＳＣのロックが解除され、作業者による部品供給ユニットＴＣの交換が可能となる。また、この時点で、ホームポジション状態信号ＨＰＳが１になることから、仮に、ＣＰＵ９０の計算が少しずれていても、内部データ等を補正することができるという効果がある。
【００２３】
この供給台１１がホームポジションに位置する状態で、作業者が作業のために安全カバーＳＣを開くと、安全カバー開閉センサ３３が開状態を検出して、開閉検出信号ＳＣＣ＝１となる。この結果、状態信号判定手段７０の各出力は、前記論理式（１）〜（４）より、

となり、アクティブ信号ＡＣＴが０になることから、ＣＰＵ９０はこれを利用して、電子部品装着装置ＭＰ内各部の所定の駆動回路等を停止させておくことができる。この結果、例えば、スライド作動モータ２１を停止させ、あるいはクラッチ連結ソレノイド２４を解除させて、供給台１１をホームポジションに停止させておくことができる。
【００２４】
次に、作業者が部品供給ユニットＴＣ交換等の作業を完了して、安全カバーＳＣを閉じると、開閉検出信号ＳＣＣ＝０となるが、作業完了プッシュボタン８２を押していない時点では、内部信号ＤＯＮ＝０の状態のため、前記論理式（１）〜（４）より、

となり、アクティブ信号ＡＣＴが依然として０であることから、ＣＰＵ９０は、引き続き、電子部品装着装置ＭＰ内各部の所定の駆動回路等を停止させておくことができる。
【００２５】
次に、作業者が作業完了を点検し確認した後に、作業完了プッシュボタン８２を押すと、完了通知信号ＰＢ＝１となり、前記論理式（１）〜（４）より、

となり、アクティブ信号ＡＣＴが１になることから、ＣＰＵ９０は、電子部品装着装置ＭＰ内各部の駆動回路等の稼働を再開することができる。
【００２６】
したがって、この場合、安全カバーＳＣが閉じている状態で、完了通知信号ＰＢが入力されたときに、アクティブ信号ＡＣＴを有効とするように構成されていることによって、安全カバーＳＣを開いて行う作業完了後に、安全カバーＳＣを閉じて、かつその後の完了通知信号ＰＢの入力後に装置の稼働が開始されるため、作業者の安全をさらに確実に確保することができるという効果がある。
【００２７】
次に、ＣＰＵ９０が電子部品装着装置ＭＰ内各部の駆動回路等の稼働を再開し、スライド作動ユニット２０を制御して供給台１１をスライド移動させると、ホームポジション信号ＨＰ＝０となる。この結果、状態信号判定手段７０の各出力は、前記論理式（１）〜（４）より、

となり、ホームポジション状態信号ＨＰＳ＝０およびロック指示信号ＳＣＬ＝１となって、前述の正常に稼働中の状態に戻る。
【００２８】
この場合に、仮に、電子部品装着装置ＭＰ内のその他の異常、例えば、モータ等の過負荷、過電流、回転数の異常、あるいは、装置内への異物の混入等々の異常を、その他の異常検出手段８１が検出して、異常検出信号ＥＲＲ＝１とすると、状態信号判定手段７０の各出力は、前記論理式（１）〜（４）より、

となる。
【００２９】
この場合、本実施形態の構成によれば、ＣＰＵ９０は、アクティブ信号ＡＣＴを利用して、ホームポジション状態信号ＨＰＳ＝０でありながら、アクティブ信号ＡＣＴが０になることから、電子部品装着装置ＭＰ内各部の所定の駆動回路等を異常停止するように、制御することが可能になり、これにより、装置を異常停止させて作業者の安全を確保することができるという効果がある。また、このアクティブ信号ＡＣＴが０（無効）になったときは、上記のように、ロック指示信号ＳＣＬが０になり、ロックソレノイド（ロック手段）３２によるロック状態が解除されるため、装置の点検等のために安全カバーＳＣを開くことができる。
【００３０】
また、上述のような異常停止の場合には、通常、作動中のモーター等が慣性によって予測困難な位置で停止したり、停止前の状態値の退避等が間に合わず、種々の情報を消失してしまうことも多いが、本実施形態の場合、ホームポジションセンサ（ホームポジション信号ＨＰの生成手段）３１を有することにより、ＣＰＵ９０は、少なくとも、供給台１１がホームポジションに位置するか否かについては、上記ホームポジション状態信号ＨＰＳによって判別することができ、上記異常時の点検の情報として役に立てることができるという効果がある。また、この結果、供給台１１がホームポジションに位置している場合には、作業再開の前に部品供給ユニットＴＣの交換等が可能となり、復旧後に交換等の作業が必要と判明して再度停止させるような、余分な停止を避けることができ、稼働率の更なる低下を回避することができるという効果を有する。
【００３１】
また、本実施形態の構成によれば、仮に、ロック指示信号ＳＣＬあるいはロックソレノイド３２に異常が発生して、かつ、その時に作業者の不作為により安全カバーＳＣが開いてしまった場合であっても、開閉検出信号ＳＣＣ＝１となるため、状態信号判定手段７０の各出力は、前記論理式（１）〜（４）より、

となり、前述の他の異常検出の場合と同様に、ＣＰＵ９０がアクティブ信号ＡＣＴ＝０を利用して、電子部品装着装置ＭＰ内各部の所定の駆動回路等を異常停止させることができ、作業者の安全をより確保し易くなるという効果がある。また、上記のロック系の異常の修復、部品供給その他の作業が完了して作業を再開する場合にも、作業者が作業完了を認識して安全カバーＳＣを閉じた後に、アクティブ信号ＡＣＴおよびロック指示信号ＳＣＬが有効となるため、複数の作業者が作業する場合に、一人の作業者が安全カバーを開いて作業している間は、例えば、自分の作業が完了した他の作業者の不作為によって、作業完了プッシュボタン８２その他の開始ボタンが押される等のミスに起因した、装置の稼働開始を防止することができ、作業の安全をより確実に確保することができ、装置の安全性をより向上させることができるという効果を有する。
【００３２】
なお、本発明は、以上に説明した実施形態に限定されることなく、種々の態様で実施することができる。例えば、本実施形態の場合、電子部品供給装置ＴＵを電子部品装着装置ＭＰに適用したが、電子部品を搭載した部品供給ユニットＴＣが着脱自在にセットされる供給台１１を、ホームポジションから取出ポジションに移動させて、取出ポジションにおいて部品供給ユニットＴＣから部品を取り出す形態の装置であれば、その取り出した部品をその後どのように扱うかに関わらず、その装置の構成要素として、本発明の電子部品供給装置ＴＵを適用することができる。また、移動手段も、スライドさせる移動ではなく、例えば、上下方向に昇降させる手段でも良い。また、本実施形態の場合、２組のペアの供給台１１、１１および１２、１２を有していたが、１組でも良いし、また、供給台１１の２台１組を同時にスライドさせるスライド作動ユニット２０を使用したが、ペアではなく供給台１１単独の１つの供給台としても良いし、３つ以上でも可能である。また、このスライド作動ユニット２０は、スライド作動ユニット２０自体がスライドできるように、ボールネジの雌ネジ側２２ｂを正逆回転させるようにしたが、ボールネジの雄ネジ側２２ａの軸を回転させるようなモータを、スライド作動ユニットとして使用して、供給台１１等をスライドさせても良い。
【００３３】
また、安全カバーＳＣを閉じた後に、さらに作業完了プッシュボタン８２を押すような、２重の保護までは不要と考えて、安全カバー開閉センサ３３による保護のみとする場合には、前記の状態信号判定手段７０の構成要素のうち、ＯＲ回路７５およびＡＮＤ回路７８を省略して、

のような論理構成にすることもできる。また、この場合にも、前述の状態信号判定手段７０と同様に、ＴＴＬ、ＥＣＬ、ＭＯＳ等の論理ＩＣを使用して構成しても良いし、全体の論理を組み込んだＬＳＩを使用しても良いし、あるいは、センサ等からの入力信号を直接、インターフェイス９３に接続し、ＣＰＵ９０によってプログラム上の論理演算モジュールとして実現することもできる。
【００３４】
さらに、本実施形態では、ロック手段としてロックソレノイド３２を使用しているが、前記制御手段ＣＵの制御により、安全カバーＳＣを開かないようにできるものであれば、例えば、モータ等の各種アクチュエータを使用することができる。また、ホームポジションセンサ３１や安全カバー開閉センサ３３などのセンサ類も、例として示した磁気センサばかりでなく、光センサなどであっても良いし、精度的に問題がなければ、単純なリミットスイッチ等を使用することもできる。その他、本発明の趣旨を逸脱しない範囲で、細部の構成や取付方法等を適宜、変更することが可能である。
【００３５】
【発明の効果】
以上詳述したように、本発明の電子部品供給装置は、ロック指示信号に従って安全カバーが開かないようにするロック手段等を備えることによって、作業者の不作為による異常停止を防止し、また、電子部品装着装置に異常が発生した場合には、ロック手段による安全カバーのロック状態が解除されるので、電子部品供給装置の点検等のために安全カバーを開くことができ、装置の稼働率と安全性を向上させることができるなどの効果がある。
【図面の簡単な説明】
【図１】本発明の一実施形態に係る電子部品供給装置を電子部品装着装置に適用した場合の、電子部品供給装置のホームポジション近傍（図２のＤ−Ｄ）における側断面図である。
【図２】実施形態のホームポジションと取出ポジションとの位置関係を示す平面図である。
【図３】実施形態の制御手段ＣＵの構成を示すブロック図である。
【符号の説明】
ＴＵ 電子部品供給装置
ＣＵ 制御手段
ＴＣ 部品供給ユニット
ＳＣ 安全カバー
１１ 供給台
２０ スライド作動ユニット（移動手段）
３２ ロックソレノイド（ロック手段）
ＳＣＬ ロック指示信号[0001]
BACKGROUND OF THE INVENTION
The present invention Supply electronic components in electronic component mounting equipment The present invention relates to an electronic component supply device, and more particularly to a means for ensuring the safety of an operator.
[0002]
This kind of electronic component supply device Used as a component supply system for an electronic component mounting apparatus. In such a case, the electronic component supply apparatus conventionally has a safety cover that can be freely opened and closed for attaching and detaching the component supply unit, and this safety cover can be opened and closed by an operator at any time. If the operator opens the safety cover while the device is in operation, the control means detects the state with a sensor or the like, and controls each part in the device or the drive circuit of another device to be interlocked. By stopping abnormally, the worker's safety is secured. Further, as described in, for example, Japanese Patent Application Laid-Open No. 6-177581, when a component replacement switch is pressed before the safety cover is opened, the detection signal for safety is invalidated, and the corresponding electronic component supply device Some ideas have been devised, such as improving the operating rate of the entire electronic component mounting apparatus by stopping only the drive system.
[0003]
[Problems to be solved by the invention]
However, as is clear from the above, in this type of electronic component supply device, if the safety cover is opened due to the operator's omission, the control means drives each part in the device and other devices that are interlocked to ensure safety. The circuit will stop abnormally. In the case of such an abnormal stop, the motor operating in the drive circuit stops at a position where it is difficult to predict due to inertia, or the state value before the stop by the control means is saved for safety first priority. In many cases, various information is lost due to lack of time. For this reason, it is necessary not to restart the work from the state before the stop, but to return the supply stand to the home position and to redo the processing of the control means from the initial setting of each part. As a result, it takes time from the stop to the resumption of work, which causes a significant reduction in the operating rate of the entire apparatus.
[0004]
The present invention has been made to solve such problems, and provides an electronic component supply device that can prevent an abnormal stop due to an operator's omission and improve the operating rate and safety of the device. The purpose is to do.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, an electronic component supply apparatus according to claim 1 of the present invention includes a supply table on which a component supply unit on which an electronic component is mounted is detachably set; This supply stand stops A home position to which the component supply unit is attached and detached; The supply stand is stopped A moving means for moving the supply base between an extraction position at which the parts are taken out from the parts supply unit, and an openable / closable part for attaching and detaching the parts supply unit. In an electronic component supply device that includes a safety cover and supplies an electronic component with an electronic component mounting device, when the supply stand is not in the home position, Control means for outputting a lock instruction signal, and preventing the safety cover from opening according to the lock instruction signal Locking means, and the control means releases the locked state by the locking means when the electronic component mounting apparatus is abnormally stopped. It is characterized by that.
[0006]
In this electronic component supply device, Electronic component supply equipment During operation, the supply stand Not in home position , The lock instruction signal becomes valid, the safety cover can be prevented from being opened by the locking means, it can be prevented even if the operator accidentally opens the safety cover, and the electronic parts are mounted If an abnormality occurs in the device, it will be stopped abnormally, which will make it easier to ensure the safety of the operator, improve the safety of the device, and an abnormality has occurred in the electronic component mounting device In this case, the safety cover is unlocked and the safety cover is unlocked by the locking means, so that the safety cover can be opened for inspection of the electronic component supply device.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a case where an electronic component supply device according to an embodiment of the present invention is applied to an electronic component mounting device will be described with reference to the accompanying drawings. In the following description, elements or parts with the same reference numerals have the same configuration and function unless otherwise specified, and redundant description is omitted.
[0008]
FIG. 1 is a side sectional view in the vicinity of the home position (DD in FIG. 2) of the electronic component supply device of the present embodiment, and FIG. 2 is a plan view showing the positional relationship between the home position and the take-out position.
[0009]
As shown in these drawings, the electronic component mounting apparatus MP includes an electronic component supply apparatus TU, a mounting means MU, and a control means CU. In this case, as shown in FIG. 1, the electronic component supply device TU includes a supply table 11 that is slidably guided by a pair of supply table guide rails 19, and a component supply unit that is detachably provided on the supply table 11. TC, a slide operation unit (moving means) 20 for sliding the supply base 11, a safety cover SC that can be opened and closed for attaching and detaching the component supply unit TC, and a safety cover SC not to be opened. And a locking solenoid (locking means) 32 for the purpose.
[0010]
A plurality of component supply units TC can be provided on the supply table 11, and can move between the component supply position A and the component suction position B as the supply table 11 slides by the slide operation unit 20. (See FIG. 2). The safety cover SC is the upper part of the entire electronic component supply device TU shown in FIG. 2 (range J in FIG. 2) or a range necessary for attaching / detaching the component supply unit TC (range H1 or H2 in FIG. 2). As shown in FIG. 1, a support rod 41 that keeps the safety cover SC open and a safety cover SC are provided on the upper part so that the operator can easily perform work such as replacement of the parts supply unit TC. It has a support rod receiver 42 that holds and holds the support rod 41 when it is closed. The lock solenoid 32 for locking the safety cover SC includes a lock solenoid main body 32a and a plunger 32b. The lock solenoid main body 32a closes the safety cover SC and then performs a work completion push button (completion notification signal PB not shown). After the operation of the apparatus is started by pushing the generator 82), the plunger 32b is attached to the lock claw 34 attached to the safety cover SC according to the control of the control means CU via a drive circuit 94 (not shown) (see FIG. 3). The safety cover SC is prevented from opening by hanging forward. FIG. 1B shows the lock claw 34C and the lock solenoid plunger 32C when the safety cover SC is closed.
[0011]
The slide operation unit 20 includes a slide operation motor 21, a ball screw 22, a timing belt 23, two sets of clutch connection solenoids 24 and a connection clutch 25, and a pair of slide operations as with the supply base 11. The unit guide rail 29 is slidably guided. The slide operation motor 21 is driven by a drive circuit 94 (not shown) under the control of the control means CU (see FIG. 3), and by rotating the female screw side 22b of the ball screw forward and backward via the timing belt 23, two sets of Along with the clutch coupling solenoid 24 and the coupling clutch 25, it slides on the slide operation unit guide rail 29 to advance and retreat (see FIG. 2). In this case, the clutch coupling solenoid body 24a operates with the slide operation unit 20 by operating the plunger 24b and rotating the coupling clutch 25 according to the control of the control means CU via a drive circuit 94 (not shown) (see FIG. 3). The supply stand 11 is connected. As a result, the supply table 11 slides on the supply table guide rail 19 in conjunction with the slide operation unit 20 and advances and retreats. In the case of this embodiment, since the slide operation unit 20 includes two sets of the clutch coupling solenoid 24 and the coupling clutch 25, the two supply bases 11 are coupled according to the number of types of electronic components required. Can do. Since a plurality of component supply units TC can be detachably provided on the supply table 11, a large number of component supply units can be provided on the supply tables 11 and 11 of these pairs. Furthermore, when the pair of supply bases 11 and 11 are located at the home position, the electronic component supply unit TU has another pair of supply bases 12 and 12 located at the take-out position, so that the operator can While a work such as replacement of the component supply unit TC with respect to the supply table 11 is being performed, the mounting of components can be advanced between another supply table 12 and a mounting means described later.
[0012]
FIG. 2 shows a supply table in which the component supply unit TC at the component supply position A is provided, that is, a pair of supply tables 11 and 11 positioned at the home position, and a component supply unit TC at the component suction position B. The positional relationship with the supply stand in which the other is provided, that is, the other pair of supply stands 12 and 12 located at the take-out position is shown. The two pairs of supply bases 11, 11 and 12, 12 are controlled so as to alternately face the take-out position, and are slid and moved by the slide operation unit 20 between the home position and the take-out position. Can do. That is, the supply stand 11 is positioned at the home position, and the operator opens the safety cover SC in the range of H1 in the drawing and is positioned at the take-out position during work such as replacement of the component supply unit TC. Parts are taken out from the component supply unit TC on the other supply table 12, the other supply table 12 is located at the home position, and the operator opens the safety cover SC in the range of H2 in the drawing to supply the components. During a period in which work such as unit TC replacement is being carried out, parts are taken out from the part supply unit TC on the supply stand 11 located at the take-out position. During the component take-out, the slide operation unit 20 has the required electronic components among the component supply units TC on the supply stand 11 or other supply stand 12 located at the take-out position according to the control of the control means CU. The supply table 11 or 12 is slid and moved so that the component supply unit TC is positioned at the component suction position B.
[0013]
As shown in the drawing, the mounting means MU includes a rotary table 50 and an XY table 60. The XY table 60 includes a Y-axis motor 61 that moves a substrate on which an electronic component is placed in the Y-axis direction and an X-axis motor 62 that moves the substrate in the X-axis direction. Let it face the position. The rotary table 50 sucks an electronic component from the component supply unit TC located at the component suction position B by the mounting head 51, confirms the component by the component confirmation unit 52, and is mounted by the component angle correction unit 53. After correcting the angle of the component to be mounted, the component is mounted at a predetermined position on the board on the XY table 60.
[0014]
In this way, when the mounting of the components is advanced and the desired electronic component is not present in the component supply unit TC on the supply table 11, the control unit CU controls the slide operation unit 20 to slide the supply table 11. Then, it is moved so as to be located at the home position (state of FIG. 2). At the home position, as shown in FIG. 1, the control unit CU positions the supply base 11 at the home position by a home position sensor (home position signal HP generation means) 31 attached to the supply base guide rail column 18. That is, it is detected that the component supply unit TC is located at the component supply position A (see FIG. 2).
[0015]
During normal operation, the control means CU detects or calculates the position of the supply base 11 by calculating or predicting the number of forward / reverse rotations of the slide operation motor 21. Separately, the control means CU detects the home position sensor 31 described above. Since it is possible to directly detect that the supply base 11 is located at the home position, the control correction can be performed during operation of the apparatus even if the control prediction and the actual position are deviated due to inertia or the like. Is possible. As the home position sensor 31 in this case, various sensors such as a magnetic sensor such as a high-frequency oscillation type, a reed switch type, or the like and a sensor generally called a proximity sensor can be used.
[0016]
Further, the control means CU has a function of outputting a lock instruction signal SCL to the lock solenoid 32 described above. Further, the control unit CU has a sensor similar to the home position sensor 31 as a safety cover open / close sensor (open / close detection signal SCC generation unit) 33 that outputs the open / close detection signal SCC of the safety cover SC. Control when it occurs.
[0017]
FIG. 3 is a block diagram showing the configuration of the control means CU.
[0018]
As shown in this figure, the control means CU follows the program stored in the ROM 91 in advance, and on the basis of the data stored in the RAM 92, the electronic component supply apparatus TU in the electronic component mounting apparatus MP and the interlocking mounting means MU etc. A CPU 90 for controlling various operations of the other apparatus, and a state signal determination means 70 for inputting signals from various detection circuits and the like in the electronic component mounting apparatus MP and determining the state of each part in the apparatus. Thus, the components of the drive system such as the motor in the electronic component mounting apparatus MP are controlled via the interface 93 and the drive circuit 94. Hereinafter, the state signal determination unit 70 that is a feature of the present embodiment will be mainly described.
[0019]
The state signal determination means 70 in the present embodiment is mainly composed of a logic circuit, and includes four NOT circuits 71, 72, 73 and 74, one OR circuit 75, three AND circuits 76, 77 and 78, The other circuit 79 is provided as required. According to this configuration, the logical expressions of the home position state signal HPS, the lock instruction signal SCL, and the active signal ACT that are the output signals of the state signal determination means 70 are the home position signal HP, the open / close detection signal SCC, and the completion notification. Based on the signal PB and the abnormality detection signal ERR, the following occurs. Here, “·” represents a logical product (AND), “+” represents a logical sum (OR), and “′” represents a logical inversion (NOT).

The status signal determination means 70 may be configured using a logic IC such as TTL, ECL, MOS, an LSI incorporating the entire logic, or the input signal described above. It can also be directly connected to the interface 93 and realized as a logical operation module on a program by the CPU 90.
[0020]
When the electronic component mounting apparatus MP is operating normally, the supply stand 11 is not located at the home position, so the home position signal HP is invalid (= logic “0”), and the safety cover SC is closed at that time. Also, the open / close detection signal SCC is invalid (= logic “0”), and the completion notification signal PB is invalid (= logic “0”) because the work completion push button 82 is not pressed immediately after the completion of the work. Since it is not detected, the abnormality detection signal ERR is also invalid (= logic “0”), and all input signals are invalid (= logic “0”). Thereby, as the output of the state signal determination means 70 under normal operation is derived from the logical expressions (1) to (4),

Thus, the home position state signal HPS is invalid, the lock instruction signal SCL is valid, and the active signal ACT is valid. In the following description, the invalidity is assumed to be logic “0” and the validity is assumed to be logic “1” as in the above description.
[0021]
Therefore, in this case, that is, when the apparatus is operating normally, the supply table 11 is located at a position other than the home position, and the home position signal HP = 0 (invalid), so that the lock instruction signal SCL = 1 (valid) It is possible to prevent the safety cover SC from being opened by the lock solenoid (locking means) 32, thereby making it easier to ensure the safety of the operator and improving the safety of the apparatus.
[0022]
Next, when the apparatus operates normally, the electronic parts are smoothly mounted, and the desired electronic parts are not present in the parts supply unit TC on the supply table 11, the CPU 90 of the control means CU is as described above. Then, the slide operation unit 20 is controlled via the interface 93 and the drive circuit 94, and the supply base 11 is slid and moved so as to be positioned at the home position. Thus, when the home position signal HP = 1, each output of the state signal determining means 70 is obtained from the logical expressions (1) to (4).

Since the lock instruction signal SCL becomes 0, the lock of the safety cover SC by the lock solenoid 32 is released, and the operator can replace the component supply unit TC. At this time, the home position state signal HPS becomes 1, so that there is an effect that the internal data and the like can be corrected even if the calculation of the CPU 90 is slightly shifted.
[0023]
When the operator opens the safety cover SC for work in a state where the supply base 11 is located at the home position, the safety cover open / close sensor 33 detects the open state, and the open / close detection signal SCC = 1. As a result, each output of the state signal determination means 70 is obtained from the logical expressions (1) to (4).

Since the active signal ACT becomes 0, the CPU 90 can use this to stop predetermined drive circuits and the like of each part in the electronic component mounting apparatus MP. As a result, for example, the supply motor 11 can be stopped at the home position by stopping the slide operation motor 21 or releasing the clutch coupling solenoid 24.
[0024]
Next, when the operator completes the work such as replacement of the parts supply unit TC and closes the safety cover SC, the open / close detection signal SCC = 0, but when the work completion push button 82 is not pressed, the internal signal DON = 0, so from the logical expressions (1) to (4),

Thus, since the active signal ACT is still 0, the CPU 90 can continuously stop predetermined drive circuits and the like of each part in the electronic component mounting apparatus MP.
[0025]
Next, after the operator checks and confirms the completion of the work, when the work completion push button 82 is pressed, a completion notification signal PB = 1 is obtained. From the logical expressions (1) to (4),

Thus, since the active signal ACT becomes 1, the CPU 90 can resume the operation of the drive circuits and the like of each part in the electronic component mounting apparatus MP.
[0026]
Therefore, in this case, when the completion notification signal PB is input in a state where the safety cover SC is closed, the operation performed by opening the safety cover SC by enabling the active signal ACT. After the completion, the safety cover SC is closed and the operation of the apparatus is started after the completion notification signal PB is input thereafter. Therefore, there is an effect that the safety of the worker can be further ensured.
[0027]
Next, when the CPU 90 resumes the operation of the drive circuits and the like of each part in the electronic component mounting apparatus MP and controls the slide operation unit 20 to slide the supply base 11, the home position signal HP = 0. As a result, each output of the state signal determination means 70 is obtained from the logical expressions (1) to (4).

Thus, the home position state signal HPS = 0 and the lock instruction signal SCL = 1 are set, and the normal operating state is restored.
[0028]
In this case, if there are other abnormalities in the electronic component mounting apparatus MP, such as an overload of a motor or the like, an overcurrent, an abnormality in the number of rotations, or a foreign matter mixed into the apparatus, When the detection means 81 detects and the abnormality detection signal ERR = 1, each output of the state signal determination means 70 is obtained from the logical expressions (1) to (4).

It becomes.
[0029]
In this case, according to the configuration of the present embodiment, the CPU 90 uses the active signal ACT, and the active signal ACT becomes 0 while the home position state signal HPS = 0, so that the electronic component mounting apparatus MP It is possible to perform control so that predetermined drive circuits and the like of each part are abnormally stopped, and this has the effect that the apparatus can be abnormally stopped to ensure the safety of the operator. When the active signal ACT becomes 0 (invalid), the lock instruction signal SCL becomes 0 as described above, and the lock state by the lock solenoid (lock means) 32 is released. For example, the safety cover SC can be opened.
[0030]
In the case of an abnormal stop as described above, the operating motor or the like usually stops at a position where it is difficult to predict due to inertia, or the state value before the stop cannot be saved in time, and various information is lost. However, in the case of the present embodiment, by having the home position sensor (home position signal HP generating means) 31, the CPU 90 at least determines whether or not the supply base 11 is located at the home position. This can be discriminated by the home position state signal HPS, and has the effect that it can be used as inspection information at the time of abnormality. As a result, when the supply stand 11 is located at the home position, it becomes possible to replace the component supply unit TC before resuming the work, and after the recovery, it becomes clear that work such as replacement is necessary, and the operation is stopped again. Thus, it is possible to avoid an excessive stop, and to prevent further reduction in the operation rate.
[0031]
Further, according to the configuration of the present embodiment, even if an abnormality occurs in the lock instruction signal SCL or the lock solenoid 32 and the safety cover SC is opened due to the operator's omission at that time. Since the open / close detection signal SCC = 1, each output of the state signal determination means 70 is obtained from the logical expressions (1) to (4).

As in the case of the other abnormality detection described above, the CPU 90 can use the active signal ACT = 0 to abnormally stop a predetermined drive circuit or the like of each part in the electronic component mounting apparatus MP. There is an effect that it becomes easier to ensure safety. In addition, when the above-described repair of the lock system, repair of parts, and other operations are completed and the operation is resumed, the operator recognizes the completion of the operation and closes the safety cover SC. Since the instruction signal SCL becomes effective, when a plurality of workers work, while one worker is working with the safety cover open, for example, the omission of other workers who have completed their work Therefore, it is possible to prevent the start of operation of the apparatus due to a mistake such as pressing the work completion push button 82 or other start buttons, and it is possible to ensure the safety of the work more reliably and to improve the safety of the apparatus. It has the effect that it can be improved further.
[0032]
The present invention is not limited to the embodiment described above, and can be implemented in various modes. For example, in the present embodiment, the electronic component supply device TU is applied to the electronic component mounting device MP. However, the supply stand 11 on which the component supply unit TC on which the electronic component is mounted is detachably set is removed from the home position. And the electronic component of the present invention can be used as a component of the apparatus regardless of how the extracted part is handled thereafter. A supply device TU can be applied. Further, the moving means may be a means for moving up and down, for example, instead of sliding. Further, in the case of the present embodiment, there are two pairs of supply bases 11, 11 and 12, 12, but one set may be used, and a slide for simultaneously sliding two sets of the supply bases 11. Although the operation unit 20 is used, it may be a single supply stand of the supply stand 11 instead of a pair, or three or more. In addition, the slide operating unit 20 is configured to rotate the female screw side 22b of the ball screw forward and backward so that the slide operating unit 20 itself can slide, but the motor that rotates the shaft of the male screw side 22a of the ball screw. May be used as a slide operation unit to slide the supply table 11 or the like.
[0033]
In addition, when the safety cover SC is closed and the operation completion push button 82 is pushed further, it is considered unnecessary to perform double protection and only the protection by the safety cover opening / closing sensor 33 is used. Of the components of the determination means 70, the OR circuit 75 and the AND circuit 78 are omitted,

A logical configuration such as Also in this case, similarly to the state signal determination means 70 described above, a logic IC such as TTL, ECL, or MOS may be used, or an LSI incorporating the entire logic may be used. Alternatively, an input signal from a sensor or the like can be directly connected to the interface 93 and realized by the CPU 90 as a logical operation module on a program.
[0034]
Furthermore, in this embodiment, the lock solenoid 32 is used as the lock means. However, various actuators such as a motor may be used as long as the safety cover SC can be prevented from being opened by the control of the control means CU. Can be used. Further, the sensors such as the home position sensor 31 and the safety cover opening / closing sensor 33 may be not only the magnetic sensor shown as an example but also an optical sensor, and if there is no problem in accuracy, a simple limit switch is used. Etc. can also be used. In addition, it is possible to appropriately change the detailed configuration, the mounting method, and the like without departing from the spirit of the present invention.
[0035]
【The invention's effect】
As described above in detail, the electronic component supply device of the present invention is provided with a locking means that prevents the safety cover from being opened according to a lock instruction signal, thereby preventing an abnormal stop due to an operator's omission, In addition, when an abnormality occurs in the electronic component mounting device, the safety cover lock state by the locking means is released, so the safety cover can be opened for inspection of the electronic component supply device, etc. There is an effect that the operating rate and safety of the apparatus can be improved.
[Brief description of the drawings]
FIG. 1 is a side sectional view in the vicinity of a home position (DD in FIG. 2) of an electronic component supply device when an electronic component supply device according to an embodiment of the present invention is applied to an electronic component mounting device.
FIG. 2 is a plan view showing a positional relationship between a home position and an extraction position according to the embodiment.
FIG. 3 is a block diagram illustrating a configuration of a control unit CU according to the embodiment.
[Explanation of symbols]
TU electronic component supply equipment
CU control means
TC parts supply unit
SC safety cover
11 Supply stand
20 Slide operation unit (moving means)
32 Lock solenoid (locking means)
SCL lock instruction signal

Claims (1)

A supply stand component supply units mounted with electronic components are detachably set in the supply base and a home position in which the component supply unit the supply table is stopped and is removably stops parts from the component supply unit A moving means for moving the supply table between the pick-up position and a safety cover that can be freely opened and closed for attaching and detaching the component supply unit. In the electronic component supply device to be supplied, the electronic component supply apparatus includes: a control unit that outputs a lock instruction signal when the supply table is not at a home position; and a lock unit that prevents the safety cover from being opened according to the lock instruction signal. control means wherein the abnormal stop of the electronic component mounting apparatus, characterized in that to release the locked state by the locking means Child component mounting apparatus.

Images