JP2016047767A - Workpiece detecting device - Google Patents

Workpiece detecting device Download PDF

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JP2016047767A
JP2016047767A JP2015210070A JP2015210070A JP2016047767A JP 2016047767 A JP2016047767 A JP 2016047767A JP 2015210070 A JP2015210070 A JP 2015210070A JP 2015210070 A JP2015210070 A JP 2015210070A JP 2016047767 A JP2016047767 A JP 2016047767A
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lever
swing
swing shaft
workpiece
transmission member
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JP5992082B2 (en
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昭宏 浮田
Akihiro Ukita
昭宏 浮田
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JTEKT Thermo Systems Corp
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Koyo Thermo Systems Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a workpiece detecting device capable of reversely driving a conveyance line, and capable of aiming at rapid restoration when conveyance failure occurs.SOLUTION: A workpiece detecting device 1 includes a detection lever 10, a rocking shaft 20, a balance member 50, and a detection switch 100. The detection lever 10 is rocked from a neutral position by abutting of a workpiece conveyed on the conveyance line. The rocking shaft 20 supports the detection lever so as to freely rock. The detection switch 100 is turned on by rocking of the detection lever 10. The balance member 50 is attached to the rocking shaft 20, and the balance member maintains the detection lever 10 in a balanced state in the neutral position.SELECTED DRAWING: Figure 4

Description

この発明は、搬送ライン上を搬送されるワークが正しい位置にあるかを確認するワーク検知装置に関する。   The present invention relates to a workpiece detection device for confirming whether a workpiece conveyed on a conveyance line is in a correct position.

連続浸炭炉などでは、ワークを搬送ラインに従って搬送し、複数のワークに対して加熱、冷却、焼入等の工程を順に施すように構成される。各工程に移行する前には、正しい位置にワークが存在することを確認するワーク検知が行われる。ワーク検知には種々の方式があり、例えば、光電センサのような光を投射してワークを検出する方式は、ワークと非接触状態で検知が行え、ワークの搬送に支障を生じることがないため好適である。   In a continuous carburizing furnace or the like, a workpiece is transferred along a transfer line, and a plurality of workpieces such as heating, cooling, and quenching are sequentially performed. Before moving to each step, workpiece detection is performed to confirm that the workpiece is present at the correct position. There are various methods for workpiece detection. For example, a method of detecting a workpiece by projecting light such as a photoelectric sensor can detect the workpiece in a non-contact state and does not hinder the conveyance of the workpiece. Is preferred.

しかし、焼入工程で使用される油槽内では、油煙等が立ちこめており、上記のような光を投射してワークを検出する方式では、信頼性に欠けるため機械的にワークの現物を確認するようにしている。   However, in the oil tank used in the quenching process, oil and soot are standing up, and the method of detecting the workpiece by projecting light as described above lacks reliability, so the actual workpiece is confirmed mechanically. I am doing so.

このようなワーク検知装置として、特許文献1には、ワークの搬送ラインの上方に垂下される検知棒を、その上部で揺動自在に保持しておき、搬送ラインを搬送されてきたワークが検知棒の下端に当接することにより検知棒の揺動中心よりも下部をワークの進行方向に揺動させ、この検知棒の揺動をセンサで検知するように構成されたワーク検知装置が開示されている。   As such a workpiece detection device, in Patent Document 1, a detection rod suspended above a workpiece conveyance line is held swingably at the upper portion thereof, and a workpiece conveyed through the conveyance line is detected. Disclosed is a workpiece detection device configured to swing a lower portion of the detection rod from the swing center of the rod in the advancing direction of the workpiece by contacting the lower end of the rod and detect the swing of the detection rod by a sensor. Yes.

この従来のワーク検知装置においては、検知棒の揺動中心よりも上部には搬送方向下流側からガイドローラが当接しており、これによって検知棒は垂直姿勢で中立位置を保持するようになっている。このガイドローラは検知棒の揺動方向を規制するストッパーとして機能し、検知棒の揺動中心よりも下部は垂直姿勢(中立位置)を基準としてワークの進行方向と逆の方向には揺動出来ないように規制されている。   In this conventional workpiece detection device, a guide roller abuts on the upper side of the swing center of the detection rod from the downstream side in the transport direction, so that the detection rod is held in a neutral position in a vertical posture. Yes. This guide roller functions as a stopper that regulates the swinging direction of the detection rod, and the lower part of the detection rod can swing in the direction opposite to the moving direction of the workpiece based on the vertical position (neutral position). There are no restrictions.

特開2008−292008号公報JP 2008-292008 A

特許文献1に記載された従来のワーク検知装置では、検知棒の揺動方向がガイドローラにより規制されているため、搬送ラインを逆転駆動出来ない。すなわち、搬送不良が発生した際などに、搬送ラインを逆転駆動するとワークの進行方向が反転し、本来の搬送方向とは逆方向に進行するワークにより、検知棒は規制された方向に揺動する力を受ける。これにより、無理な応力が作用して検知棒が破損する可能性がある。   In the conventional workpiece detection device described in Patent Document 1, the swinging direction of the detection rod is restricted by the guide roller, so that the conveyance line cannot be driven in reverse. In other words, when the conveyance line is driven reversely when the conveyance line is generated, the moving direction of the workpiece is reversed, and the detection rod swings in a regulated direction by the workpiece moving in the direction opposite to the original conveying direction. Receive power. Thereby, an excessive stress may act and a detection rod may be damaged.

このため、搬送不良が発生した際は、搬送ラインおよび炉の操業を停止し、炉内が十分に冷却されたのを待って手作業でワークを取り出して復帰させるしかなかった。ときには、復帰までに数日を要し、生産性が低下する問題があった。   For this reason, when a conveyance failure occurs, the operation of the conveyance line and the furnace must be stopped, and after the inside of the furnace is sufficiently cooled, the work is manually taken out and returned. In some cases, it took several days to return, and there was a problem that productivity decreased.

この発明は、上記の問題に鑑みてなされたものであり、搬送ラインを逆転駆動することが可能であり、搬送不良発生時に早急な復帰を目指せるワーク検知装置を提供することを目的とする。   The present invention has been made in view of the above problems, and an object of the present invention is to provide a workpiece detection device that can reversely drive a transfer line and can aim for quick return when a transfer failure occurs.

本発明のワーク検知装置は、第1のレバー、第1の揺動軸、伝動部材、バランス部材、連結部材、第2のレバー、第2の揺動軸、第3のレバー、検知スイッチ、およびスイッチング部材を備える。第1のレバーは、搬送ライン上を搬送されるワークが当接することで中立位置から搬送方向および搬送方向と逆方向に揺動可能である。第1の揺動軸は、第1のレバーを揺動自在に支持する。伝動部材は、第1の揺動軸に連結され、第1のレバーの揺動に連動して第1の揺動軸を中心に、第1のレバーの搬送方向への揺動に対応する方向および搬送方向と逆方向への揺動に対応する方向に揺動可能である。バランス部材は、第1の揺動軸に連結され、第1のレバーを中立位置に均衡状態で保持する。連結部材は、バランス部材が取り付けられる連結部材であって第1の揺動軸、伝動部材、及びバランス部材を互いに連結させる。第2のレバーは、伝動部材に当接し、第1のレバーの搬送方向の揺動のみに応じた伝動部材の揺動に連動して揺動する。第2の揺動軸は、第2のレバーを揺動自在に支持する。第3のレバーは、第2の揺動軸に支持され、第2のレバーの揺動に連動して揺動する。検知スイッチは、第3のレバーの揺動によりオンされる。スイッチング部材は、第3のレバーに当接し、第1のレバーの搬送方向への揺動に応じた第3のレバーの揺動に連動して揺動し、検知スイッチをオンする。   The workpiece detection device of the present invention includes a first lever, a first swing shaft, a transmission member, a balance member, a connecting member, a second lever, a second swing shaft, a third lever, a detection switch, and A switching member is provided. The first lever can swing in the transport direction and in the direction opposite to the transport direction from the neutral position when the work transported on the transport line contacts. The first swing shaft supports the first lever in a swingable manner. The transmission member is connected to the first swing shaft, and is linked to the swing of the first lever, and the direction corresponds to the swing of the first lever in the transport direction around the first swing shaft. Further, it can swing in a direction corresponding to the swing in the direction opposite to the transport direction. The balance member is connected to the first swing shaft, and holds the first lever in a neutral state at the neutral position. The connecting member is a connecting member to which the balance member is attached, and connects the first swing shaft, the transmission member, and the balance member to each other. The second lever abuts on the transmission member and swings in conjunction with the swing of the transmission member according to only the swing of the first lever in the transport direction. The second swing shaft supports the second lever so as to be swingable. The third lever is supported by the second swing shaft and swings in conjunction with the swing of the second lever. The detection switch is turned on by swinging the third lever. The switching member contacts the third lever, swings in conjunction with the swing of the third lever according to the swing of the first lever in the transport direction, and turns on the detection switch.

この構成によると、搬送ライン上を搬送されるワークが第1のレバーに当接し、第1のレバーが揺動(傾倒)されることで、検知スイッチがオンされる。ワークが通り過ぎると、第1のレバーは、第1の揺動軸に連結されたバランス部材により中立位置に戻されて、保持される。第1のレバーは中立位置に均衡状態で保持されるので、揺動方向が規制されることがなく、中立位置を基準としていずれの方向にも揺動可能となる。   According to this configuration, the workpiece conveyed on the conveyance line comes into contact with the first lever, and the detection switch is turned on when the first lever is swung (tilted). When the workpiece passes, the first lever is returned to the neutral position and held by the balance member connected to the first swing shaft. Since the first lever is held in a balanced state at the neutral position, the swinging direction is not restricted, and the first lever can swing in any direction on the basis of the neutral position.

本発明によると、搬送不良発生時に、搬送ラインを逆転駆動してワークを搬送方向と逆方向に進行させて退避させることが出来る。したがって、早急な復帰を目指せる。   According to the present invention, when a conveyance failure occurs, the conveyance line can be driven in reverse to advance the workpiece in the direction opposite to the conveyance direction and retract. Therefore, an immediate return can be aimed at.

この発明の一実施形態に係るワーク検知装置の概略構成を、搬送方向の上流側から見て示す図である。It is a figure which shows schematic structure of the workpiece | work detection apparatus which concerns on one Embodiment of this invention seeing from the upstream of a conveyance direction. 上記ワーク検知装置の要部の平面図である。It is a top view of the principal part of the said workpiece | work detection apparatus. 上記ワーク検知装置の要部の側面図である。It is a side view of the principal part of the said workpiece | work detection apparatus. 上記ワーク検知装置によるワーク検知動作を説明する側面図である。It is a side view explaining the workpiece | work detection operation | movement by the said workpiece | work detection apparatus. 上記ワーク検知装置によるワーク退避動作を説明する側面図である。It is a side view explaining the workpiece evacuation operation | movement by the said workpiece | work detection apparatus.

以下に、この発明の実施の形態に係るワーク検知装置の構成を図1〜図3を参照して説明する。本実施の形態では、ワーク検知装置が、焼入工程で油槽内にワークを浸漬するためのエレベータ装置に搭載されている場合を例に説明する。   Below, the structure of the workpiece | work detection apparatus which concerns on embodiment of this invention is demonstrated with reference to FIGS. 1-3. In the present embodiment, a case where the workpiece detection device is mounted on an elevator device for immersing a workpiece in an oil tank in the quenching process will be described as an example.

図1に示すように、本実施の形態のワーク検知装置は、第1のレバー10、第1の揺動軸20、伝動部材40、バランス部材50、第2のレバー60、第2の揺動軸70、第3のレバー80、付勢部材90、および検知スイッチ100を備える。   As shown in FIG. 1, the workpiece detection apparatus according to the present embodiment includes a first lever 10, a first swing shaft 20, a transmission member 40, a balance member 50, a second lever 60, and a second swing. A shaft 70, a third lever 80, a biasing member 90, and a detection switch 100 are provided.

図1に示すように、搬送ラインはチェーンコンベア方式によりワークWを搬送する方式が採用され、チェーン駆動機構4,5が設けられる。チェーン駆動機構4,5を駆動することで搬送チェーン(不図示)が一定方向に移動する。チェーン駆動機構4,5は逆転駆動も可能とされる。搬送チェーンの上面にはワークWを収容する搬送器が設置され、ワークWが載置される搬送器の面は水平で面一な搬送面TPを構成する。なお、搬送ラインは、ワークWを搬送できればよく、チェーンコンベア方式に限られない。   As shown in FIG. 1, the conveyance line employs a method of conveying the workpiece W by a chain conveyor method, and chain drive mechanisms 4 and 5 are provided. By driving the chain drive mechanisms 4 and 5, the transport chain (not shown) moves in a certain direction. The chain drive mechanisms 4 and 5 can also be driven in reverse. A transporter that accommodates the work W is installed on the upper surface of the transport chain, and the surface of the transporter on which the work W is placed constitutes a horizontal and flush transport surface TP. In addition, the conveyance line should just be able to convey the workpiece | work W, and is not restricted to a chain conveyor system.

図3に示すように、第1のレバー(検知レバー)10は、搬送ライン上を搬送されるワークWが当接することで中立位置から搬送方向(反時計方向、図4の矢印R1方向参照。)へ揺動される。後述するように、第1のレバー10は揺動方向が規制されておらず、中立位置から前記搬送方向と逆方向(時計方向、図5の矢印S1方向参照。)にも揺動可能である。本実施の形態では、第1のレバー10は筒状の作用部12と、この作用部12を先端に支持する棒状の柄部11とから構成される。図1に示すように、第1のレバー10はチェーン駆動機構4,5の間に位置し、作用部12が搬送面TPよりも上方に突出している。   As shown in FIG. 3, the first lever (detection lever) 10 is moved from the neutral position to the conveyance direction (counterclockwise, see the direction of arrow R <b> 1 in FIG. 4) when the workpiece W conveyed on the conveyance line comes into contact. ). As will be described later, the swinging direction of the first lever 10 is not restricted, and the first lever 10 can swing from the neutral position in the direction opposite to the conveying direction (clockwise, see the arrow S1 direction in FIG. 5). . In the present embodiment, the first lever 10 includes a cylindrical action portion 12 and a rod-like handle portion 11 that supports the action portion 12 at the tip. As shown in FIG. 1, the first lever 10 is located between the chain drive mechanisms 4 and 5, and the action part 12 protrudes above the transport surface TP.

図3に示すように、第1の揺動軸20は、第1のレバー10を揺動自在に支持する。本実施の形態では、図1に示すように、第1の揺動軸20は、装置内枠201,202に支持される太軸21と、内枠201の外で太軸21に同軸に固定される細軸22とにより構成される。太軸21はフレーム201,202にそれぞれ軸受2,3を用いて回転自在に支持されている。細軸22は、軸受2をカプラとして太軸21に連結されている。   As shown in FIG. 3, the first swing shaft 20 supports the first lever 10 so as to be swingable. In the present embodiment, as shown in FIG. 1, the first swing shaft 20 is fixed coaxially to the thick shaft 21 outside the inner frame 201 and the thick shaft 21 supported by the apparatus inner frames 201 and 202. The thin shaft 22 is made up of. The thick shaft 21 is rotatably supported by the frames 201 and 202 using bearings 2 and 3, respectively. The thin shaft 22 is connected to the thick shaft 21 using the bearing 2 as a coupler.

図3に示すように、伝動部材40は、第1の揺動軸20(厳密には、細軸22)に連結部材30を介して連結され、第1のレバー10の揺動に連動して第1の揺動軸20を中心に、第1のレバー10の前記搬送方向への揺動に対応する方向(反時計方向、図4の矢印R2方向参照。)および前記搬送方向と逆方向への揺動に対応する方向(時計方向、図5の矢印S2方向参照。)に揺動可能である。伝動部材40の形状は限定されないが、本実施の形態では円柱形を呈する。伝動部材40は両端面に突出する軸40Aを備え、この軸40Aを用いて連結部材30に取付けられる。   As shown in FIG. 3, the transmission member 40 is connected to the first swing shaft 20 (strictly, the thin shaft 22) via the connecting member 30, and in conjunction with the swing of the first lever 10. A direction (counterclockwise, see the direction of arrow R2 in FIG. 4) corresponding to the swing of the first lever 10 in the transport direction and the direction opposite to the transport direction, with the first swing shaft 20 as the center. Can be swung in a direction corresponding to the swing of the head (clockwise, see arrow S2 direction in FIG. 5). Although the shape of the transmission member 40 is not limited, in this Embodiment, it exhibits a cylindrical shape. The transmission member 40 includes a shaft 40A protruding from both end faces, and is attached to the connecting member 30 using the shaft 40A.

バランス部材50は、第1の揺動軸20に取り付けられ、第1のレバー10を中立位置に均衡状態で保持する。本実施の形態では、図2、図3に示すように、バランス部材50は、第1の揺動軸20(厳密には、細軸22)に連結部材30を介して連結され、伝動部材40と同様に、第1のレバー10の揺動に連動して第1の揺動軸20を中心に、第1のレバー10の前記搬送方向への揺動に対応する方向および前記搬送方向と逆方向への揺動に対応する方向に揺動可能である。バランス部材50の形状は限定されないが、本実施の形態では円柱形を呈する。バランス部材50は両端面に突出する軸50Aを備え、この軸50Aを用いて連結部材30に取付けられる。バランス部材50としては、上記伝動部材40と同一の部材を用いることが可能である。これにより、部品の共通化が図られる。   The balance member 50 is attached to the first swing shaft 20 and holds the first lever 10 in a neutral state in a neutral position. In the present embodiment, as shown in FIGS. 2 and 3, the balance member 50 is connected to the first swing shaft 20 (strictly, the thin shaft 22) via the connection member 30, and the transmission member 40. In the same manner as described above, the direction corresponding to the swing of the first lever 10 in the transport direction around the first swing shaft 20 in conjunction with the swing of the first lever 10 and the direction opposite to the transport direction. It can swing in the direction corresponding to the swing in the direction. Although the shape of the balance member 50 is not limited, in this Embodiment, it exhibits a cylindrical shape. The balance member 50 includes shafts 50A protruding from both end faces, and is attached to the connecting member 30 using the shafts 50A. As the balance member 50, the same member as the transmission member 40 can be used. As a result, the parts can be shared.

図2、図3に示すように、本実施の形態では、連結部材30は、略二等辺三角形の平面形状を呈する板状の一対の連結板31,32から構成される。図3に示すように、第1の揺動軸20(細軸22)は、連結板31,32の三角形の一頂点を貫通するようにして固定される。   As shown in FIGS. 2 and 3, in the present embodiment, the connecting member 30 is composed of a pair of plate-like connecting plates 31 and 32 having a planar shape of a substantially isosceles triangle. As shown in FIG. 3, the first swing shaft 20 (thin shaft 22) is fixed so as to pass through one vertex of the triangle of the connecting plates 31 and 32.

図2、図3に示すように、伝動部材40およびバランス部材50は、両連結板31,32の間に挟まれるように、軸40Aおよび50Aを用いて連結板31,32の三角形の残りの各頂点部に取付けられる。さらに、伝動部材40およびバランス部材50は、第1のレバー10の柄部11の長手方向を対称軸として線対称な位置に配置される。   As shown in FIGS. 2 and 3, the transmission member 40 and the balance member 50 are left between the connection plates 31 and 32 using the shafts 40 </ b> A and 50 </ b> A and the remaining triangles of the connection plates 31 and 32. Attached to each apex. Furthermore, the transmission member 40 and the balance member 50 are disposed at positions that are line-symmetric with respect to the longitudinal direction of the handle portion 11 of the first lever 10 as the symmetry axis.

上記の第1の揺動軸20、伝動部材40およびバランス部材50の配置により、図3に示すように、第1のレバー10が垂直姿勢で均衡状態を保って中立位置に保持される。後述すように、第1のレバー10の揺動方向は両方向(前記搬送方向および前記搬送方向と逆方向)である。   Due to the arrangement of the first swing shaft 20, the transmission member 40, and the balance member 50, the first lever 10 is held in a neutral position while maintaining a balanced state in a vertical posture as shown in FIG. As will be described later, the swinging direction of the first lever 10 is both directions (the transport direction and the direction opposite to the transport direction).

なお、バランス部材50を第1の揺動軸20に取り付けるための手段は、連結部材30を用いなくてもよく、また別部材を用いて取付けても良い。本実施の形態のように、バランス部材50を第1の揺動軸20に取り付けるための手段を、伝動部材40を第1の揺動軸20に連結する連結部材30で兼用すれば、部品点数を減らすことが可能となる。   Note that the means for attaching the balance member 50 to the first swing shaft 20 does not need to use the connecting member 30 or may be attached using another member. If the means for attaching the balance member 50 to the first oscillating shaft 20 is combined with the connecting member 30 linking the transmission member 40 to the first oscillating shaft 20 as in the present embodiment, the number of parts is reduced. Can be reduced.

図2、図3に示すように、第2のレバー60は、伝動部材40に当接し、第1のレバー10が前記搬送方向に揺動すると伝動部材40の揺動に連動して時計方向(図4の矢印R3方向参照。)に揺動する。第2のレバー60の形状は限定されないが、本実施の形態では板棒状を呈する。第2のレバー60は、図3に示すように、その自重により先端部が円柱形の伝動部材40の周面上部に当接している。第2のレバー60の基端は第2の揺動軸70に固定されている。   As shown in FIGS. 2 and 3, the second lever 60 contacts the transmission member 40, and when the first lever 10 swings in the transport direction, the second lever 60 rotates in the clockwise direction (in conjunction with the swing of the transmission member 40). (See the direction of arrow R3 in FIG. 4). Although the shape of the second lever 60 is not limited, in the present embodiment, it has a plate bar shape. As shown in FIG. 3, the tip of the second lever 60 is in contact with the upper peripheral surface of the cylindrical transmission member 40 due to its own weight. The base end of the second lever 60 is fixed to the second swing shaft 70.

図2、図3に示すように、第2の揺動軸70は、第2のレバー60および第3のレバー80を揺動自在に支持している。図1に示すように、第2の揺動軸70は、内枠201に対向配置された装置外枠301を貫通して先端側が突出している。図2に示すように、外枠301は第2の揺動軸70の貫通箇所が筒状に突出し、この筒状部の先端面に取付板303が取付けられる。取付板303にはパッキン304を介してフランジ305が取付けられている。取付板303、パッキン304およびフランジ305を貫通して軸受6が固定される。この軸受6に、第2の揺動軸70が回転自在に支持されている。   As shown in FIGS. 2 and 3, the second swing shaft 70 supports the second lever 60 and the third lever 80 so as to be swingable. As shown in FIG. 1, the second rocking shaft 70 penetrates through the apparatus outer frame 301 arranged to face the inner frame 201, and the tip side protrudes. As shown in FIG. 2, the outer frame 301 protrudes in a cylindrical shape at the penetrating portion of the second swing shaft 70, and a mounting plate 303 is attached to the distal end surface of the cylindrical portion. A flange 305 is attached to the attachment plate 303 via a packing 304. The bearing 6 is fixed through the mounting plate 303, the packing 304 and the flange 305. A second swing shaft 70 is rotatably supported on the bearing 6.

第3のレバー80は、第1のレバー10が前記搬送方向に揺動すると第2のレバー60の揺動に連動して時計方向(図4の矢印R4方向参照。)に揺動する。本実施の形態では、図2、図3に示すように、第3のレバー80は、滑らかな曲面により線対称な耳状の形状に形成された広がる作用部80Aと、棒状に延びる柄部80Bと、作用部80Aと柄部80Bをつなぐ取付部80Cとから構成された一体成型品である。図3に示すように、柄部80Bの長手方向を決める中心線は作用部80Aの線対称軸と一致している。取付部80Cは中心に取付穴を有し、この取付穴に第2の揺動軸70の先端が嵌合される。これにより、第3のレバー80が第2の揺動軸70に固定される。   When the first lever 10 swings in the transport direction, the third lever 80 swings clockwise (see the direction of arrow R4 in FIG. 4) in conjunction with the swing of the second lever 60. In the present embodiment, as shown in FIG. 2 and FIG. 3, the third lever 80 includes a spreading action portion 80A formed into a line-symmetric ear shape by a smooth curved surface and a handle portion 80B extending in a rod shape. And an integrally molded product composed of an attachment portion 80C connecting the action portion 80A and the handle portion 80B. As shown in FIG. 3, the center line that determines the longitudinal direction of the handle portion 80B coincides with the line symmetry axis of the action portion 80A. The mounting portion 80C has a mounting hole in the center, and the tip of the second swing shaft 70 is fitted into this mounting hole. Thereby, the third lever 80 is fixed to the second swing shaft 70.

図3に示すように、付勢部材90は、第3のレバー80を、第1のレバー10の前記搬送方向への揺動に応じた方向と逆方向(反時計方向、図4の矢印R4と反対の方向参照。)に揺動させるように付勢している。付勢部材90は、限定されないが、図示のようなコイルバネを好適に用いることが出来る。付勢部材90の一端は、第3のレバー80の柄部80Bに取付けられている。   As shown in FIG. 3, the urging member 90 moves the third lever 80 in the direction opposite to the direction corresponding to the swing of the first lever 10 in the transport direction (counterclockwise, arrow R4 in FIG. 4). (See the opposite direction.) Although the biasing member 90 is not limited, a coil spring as shown in the figure can be suitably used. One end of the urging member 90 is attached to the handle 80B of the third lever 80.

ストッパー7は、付勢部材90による付勢に抗し、第3のレバー80を中立位置に規制する。ストッパー7の形状は限定されないが、本実施の形態ではフランジ305から突出する丸棒状を呈する。ストッパー7は、図3に示すように、第3のレバー80の作用部80Aの上方に膨出する部分に当接する。このストッパー7により、第2,第3のレバー60,80の反時計方向の動きが拘束され、第1のレバー10が前記搬送方向に揺動したときのみ、第2,第3のレバー60,80が揺動し、後述する検知スイッチ100がワークWの検知を行う。   The stopper 7 resists urging by the urging member 90 and restricts the third lever 80 to the neutral position. Although the shape of the stopper 7 is not limited, in the present embodiment, it has a round bar shape protruding from the flange 305. As shown in FIG. 3, the stopper 7 abuts on a portion that bulges above the action portion 80 </ b> A of the third lever 80. The stopper 7 restricts the counterclockwise movement of the second and third levers 60 and 80, and only when the first lever 10 swings in the transport direction, the second and third levers 60, 80 80 swings, and a detection switch 100 described later detects the workpiece W.

図3に示すように、検知スイッチ100は、フランジ305の下部に取付けられている。検知スイッチ100は上部にスイッチング部材110を備える。スイッチング部材110は、第3のレバー80に当接し、第1のレバー10が前記搬送方向に揺動すると第3のレバー80の揺動に連動して反時計方向(図4の矢印R5方向参照。)に揺動し、検知スイッチ100をオンする。本実施の形態では、スイッチング部材110は、揺動軸101を中心に揺動自在に配された柄部111と、この柄部111の先端に配された円盤状の作用部112とから構成される。スイッチング部材110の作用部112は、第3のレバー80の作用部80Aの下方に膨出する部分に当接している。   As shown in FIG. 3, the detection switch 100 is attached to the lower part of the flange 305. The detection switch 100 includes a switching member 110 at the top. The switching member 110 contacts the third lever 80, and when the first lever 10 swings in the transport direction, the switching member 110 is counterclockwise (see the direction of arrow R5 in FIG. 4) in conjunction with the swing of the third lever 80. And the detection switch 100 is turned on. In the present embodiment, the switching member 110 includes a handle portion 111 that is swingably disposed around the swing shaft 101, and a disk-shaped action portion 112 that is disposed at the tip of the handle portion 111. The The action portion 112 of the switching member 110 is in contact with a portion that bulges below the action portion 80A of the third lever 80.

本実施の形態によると、第1のレバー10は中立位置で垂直姿勢となって均衡状態で保持されるので、揺動方向が規制されることがなく、中立位置を基準としていずれの方向(図3では、時計方向および反時計方向)にも揺動可能である。これにより、以下に説明するように、ワーク検知動作のみでなく、ワーク退避動作を実施可能となる。   According to the present embodiment, since the first lever 10 is in a vertical posture at the neutral position and is held in an equilibrium state, the swinging direction is not restricted, and any direction (see FIG. 3 can also be swung clockwise and counterclockwise. As a result, as described below, not only the workpiece detection operation but also the workpiece evacuation operation can be performed.

まず、ワーク検知装置1によるワーク検知動作を図4を参照して説明する。ワークWが搬送面TP上を搬送されてくると、ワークWの進行方向の先端で第1のレバー10の作用部12が押下げられ、第1のレバー10が反時計方向(矢印R1方向)に揺動する。これに連動して伝動部材40が反時計方向(矢印R2方向)に揺動する。これに連動して第2のレバー60、第3のレバー80、およびスイッチング部材110が図示のごとくそれぞれ矢印R3,4,5方向に揺動して、検知スイッチ100がオンされる。   First, a workpiece detection operation by the workpiece detection device 1 will be described with reference to FIG. When the workpiece W is transported on the transport surface TP, the action portion 12 of the first lever 10 is pushed down at the tip in the traveling direction of the workpiece W, and the first lever 10 is counterclockwise (arrow R1 direction). Rocks. In conjunction with this, the transmission member 40 swings counterclockwise (arrow R2 direction). In conjunction with this, the second lever 60, the third lever 80, and the switching member 110 are swung in the directions of arrows R3, 4, 5 as shown in the figure, and the detection switch 100 is turned on.

これによって、ワークWが所定の位置に到達したことが検知される。その後、図1に示すように、エレベータ装置の昇降板203にワークWが載せられ、ワークWを載せた昇降板203が下降して図示しない油槽内に浸漬されてワークWの焼入が行われる。なお、ここで説明したワーク検知後の工程は一例であって限定されない。   Thereby, it is detected that the workpiece W has reached a predetermined position. After that, as shown in FIG. 1, the workpiece W is placed on the lifting plate 203 of the elevator apparatus, and the lifting plate 203 on which the workpiece W is placed is lowered and immersed in an oil tank (not shown) to quench the workpiece W. . In addition, the process after the workpiece | work detection demonstrated here is an example, and is not limited.

次に、ワーク検知装置1によるワーク退避動作を図5を参照して説明する。ワークWが搬送不良によりエレベータ装置の昇降板203に正しく載らなかった場合、搬送ラインを逆転駆動してワークWの進行方向を反転させる。これにより、ワークWの進行方向の先端で第1のレバー10の作用部12が押下げられ、第1のレバー10が時計方向(矢印S1方向)に揺動する。これに連動して伝動部材40が時計方向(矢印S2方向)に揺動する。しかし、第3のレバー80はストッパー7により規制されているため、この伝動部材40の揺動によって第3レバー80を含む第2の揺動軸70に固定された部品は揺動することはない。つまり、第2のレバー60も揺動しない。   Next, a workpiece retraction operation by the workpiece detection device 1 will be described with reference to FIG. When the workpiece W is not correctly placed on the elevator plate 203 of the elevator apparatus due to the conveyance failure, the conveyance line is reversely driven to reverse the traveling direction of the workpiece W. As a result, the action portion 12 of the first lever 10 is pushed down at the tip in the traveling direction of the workpiece W, and the first lever 10 swings clockwise (in the direction of the arrow S1). In conjunction with this, the transmission member 40 swings clockwise (in the direction of arrow S2). However, since the third lever 80 is regulated by the stopper 7, the parts fixed to the second swing shaft 70 including the third lever 80 do not swing due to the swing of the transmission member 40. . That is, the second lever 60 does not swing.

これによって、検知スイッチ100がオンされることなく、搬送ラインを逆転駆動してワークWを前記搬送方向と逆方向に進行させて退避させることが出来る。したがって、搬送不良が発生しても早急な復帰を目指すことが可能となる。   Accordingly, the work line can be driven in the reverse direction and the work W can be advanced in the direction opposite to the transport direction and retracted without the detection switch 100 being turned on. Therefore, even if a conveyance failure occurs, it is possible to aim for a quick return.

上述の実施形態の説明は、すべての点で例示であって、制限的なものではないと考えられるべきである。この発明の範囲は、上述の実施形態ではなく、特許請求の範囲によって示される。さらに、この発明の範囲には、特許請求の範囲と均等の意味および範囲内でのすべての変更が含まれることが意図される。   The above description of the embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above-described embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the claims.

1−ワーク検知装置
10−第1のレバー(検知レバー)
20−第1の揺動軸
30−連結部材
40−伝動部材
50−バランス部材
60−第2のレバー
70−第2の揺動軸
80−第3のレバー
90−付勢部材(スプリング)
100−検知スイッチ
110−スイッチング部材
1-work detection device 10-first lever (detection lever)
20-first swing shaft 30-connecting member 40-transmission member 50-balance member 60-second lever 70-second swing shaft 80-third lever 90-biasing member (spring)
100-detection switch 110-switching member

Claims (4)

搬送ライン上を搬送されるワークが当接することで中立位置から搬送方向および前記搬送方向と逆方向に揺動可能な第1のレバーと、
前記第1のレバーを揺動自在に支持する第1の揺動軸と、
前記第1の揺動軸に連結され、前記第1のレバーの揺動に連動して前記第1の揺動軸を中心に、前記第1のレバーの前記搬送方向への揺動に対応する方向および前記搬送方向と逆方向への揺動に対応する方向に揺動可能な伝動部材と、
前記第1の揺動軸に連結され、前記第1のレバーを中立位置に均衡状態で保持するバランス部材と、
前記バランス部材が取り付けられる連結部材であって前記第1の揺動軸、前記伝動部材、及び前記バランス部材を互いに連結させる連結部材と、
前記伝動部材に当接し、前記第1のレバーの前記搬送方向の揺動のみに応じた前記伝動部材の揺動に連動して揺動する第2のレバーと、
前記第2のレバーを揺動自在に支持する第2の揺動軸と、
前記第2の揺動軸に支持され、前記第2のレバーの揺動に連動して揺動する第3のレバーと、
前記第3のレバーの揺動によりオンされる検知スイッチと、
前記第3のレバーに当接し、前記第1のレバーの前記搬送方向への揺動に応じた前記第3のレバーの揺動に連動して揺動し、前記検知スイッチをオンするスイッチング部材と、
を備えるワーク検知装置。
A first lever capable of swinging from a neutral position in a conveying direction and in a direction opposite to the conveying direction by contacting a workpiece conveyed on the conveying line;
A first swing shaft for swingably supporting the first lever;
The first lever is connected to the first swing shaft, and the first lever is swung in the transport direction around the first swing shaft in conjunction with the swing of the first lever. A transmission member capable of swinging in a direction corresponding to swinging in a direction opposite to the direction and the conveying direction;
A balance member connected to the first swing shaft and holding the first lever in a neutral position in a balanced state;
A connecting member to which the balance member is attached, the first swing shaft, the transmission member, and a connecting member for connecting the balance member to each other;
A second lever that contacts the transmission member and swings in conjunction with the swing of the transmission member according to the swing of the first lever only in the transport direction;
A second swing shaft for swingably supporting the second lever;
A third lever supported by the second swing shaft and swinging in conjunction with the swing of the second lever;
A detection switch that is turned on by swinging the third lever;
A switching member that contacts the third lever, swings in conjunction with the swing of the third lever according to the swing of the first lever in the transport direction, and turns on the detection switch; ,
A workpiece detection apparatus comprising:
前記第1の揺動軸は、前記搬送ラインに対する水平方向の外側に配置された内枠に回転可能に支持され、
前記伝動部材は、前記第1の揺動軸における前記内枠から外側に延出した部分に設けられ、
前記第2の揺動軸は、前記内枠に対する水平方向の外側に配置された外枠に回転可能に支持され、
前記第2のレバーは、前記第2の揺動軸における前記内枠と前記外枠との間に位置する部分に、前記伝動部材に接離自在に設けられ、
前記第3のレバーは、前記第2の揺動軸における前記外枠から外側に延出した部分に設けられ、
前記検知スイッチ及び前記スイッチング部材は、前記外枠の外側に設けられ、前記第3のレバーの揺動によって前記スイッチング部材が前記検知スイッチをオンするように構成された請求項1に記載のワーク検知装置。
The first swing shaft is rotatably supported by an inner frame disposed on the outer side in the horizontal direction with respect to the transport line,
The transmission member is provided in a portion extending outward from the inner frame in the first swing shaft,
The second swing shaft is rotatably supported by an outer frame disposed on the outer side in the horizontal direction with respect to the inner frame,
The second lever is provided at a portion located between the inner frame and the outer frame on the second swing shaft so as to be able to contact and separate from the transmission member.
The third lever is provided on a portion of the second swing shaft that extends outward from the outer frame,
The workpiece detection according to claim 1, wherein the detection switch and the switching member are provided outside the outer frame, and the switching member turns on the detection switch when the third lever swings. apparatus.
前記連結部材が略二等辺三角形の平面形状を呈し、前記第1の揺動軸は該連結部材の三角形の一頂点部に配置され、前記伝動部材および前記バランス部材は該連結部材の三角形の残りの頂点部に前記第1のレバーの長手方向を対称軸として線対称な位置に配置されている請求項1または2に記載のワーク検知装置。   The connecting member has a substantially isosceles triangular planar shape, the first swing shaft is disposed at one vertex of the connecting member triangle, and the transmission member and the balance member are the rest of the connecting member triangle. The workpiece detection device according to claim 1, wherein the workpiece detection device is arranged at a line-symmetrical position with respect to the longitudinal direction of the first lever as an axis of symmetry. 前記バランス部材に、前記伝動部材と同一部材を用いた請求項3に記載のワーク検知装置。   The workpiece detection apparatus according to claim 3, wherein the balance member is the same member as the transmission member.
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