JP3554236B2 - Grip pair opening adjustment device for packaging machines - Google Patents

Grip pair opening adjustment device for packaging machines Download PDF

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JP3554236B2
JP3554236B2 JP32915499A JP32915499A JP3554236B2 JP 3554236 B2 JP3554236 B2 JP 3554236B2 JP 32915499 A JP32915499 A JP 32915499A JP 32915499 A JP32915499 A JP 32915499A JP 3554236 B2 JP3554236 B2 JP 3554236B2
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link
shaft
grip
piece
pair
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JP2001146211A (en
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圭逸 清水
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General Packer Co Ltd
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General Packer Co Ltd
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Description

【０００１】
【発明の属する技術分野】
本発明は、ロータリー方式の包装機において包装袋を挟持するグリップ対の開度を袋幅の大きさに合わせてモータ装置の駆動により調節するようにした装置に関する。
【０００２】
【従来の技術】
従来の包装袋を挟持するグリップ対の開度調節装置としては、実公昭６３−３０６５２号公報に示すように、旋回円板上に設けられたハンドルを回転操作して旋回円板に回転可能に支持された調節円板を小角度だけ回転移動させることにより、その調節円板とグリップ対との間に設けられたリンク機構と扇形歯車の連動作用によってグリップ対の開度を包装袋の袋幅の大きさに合わせて調節する構造とされている。
【０００３】
【発明が解決しようとする課題】
上記した従来のグリップ対の開度調節装置においては、ハンドルの回転操作によりグリップ対の挟持部の間隔を目視で確認しつつ調節を行っている。ところが、ハンドルは旋回円板と一緒に移動していつも同じ位置に停止するとは限らないので、例えば、包装袋が開口される前の給袋ステーションに停止したグリップ対とハンドルの位置が離れている場合には開度調節を行うのに手間がかかる。特に、袋幅の大きさの変更頻度が多い包装機の場合には、グリップ対の開度調節のための作業が煩瑣となり迅速に行うことが容易ではない。
【０００４】
この発明の目的は、包装袋を挟持するグリップ対の開度調節をモータ装置の駆動により容易に行うように改良したグリップ対の開度調節装置を提供することにある。
【０００５】
【課題を解決するための手段】
前記目的を達成するために請求項１に記載の発明は、スタンドに回転自由に設けた間欠回転軸に固定された回転体に、多数のグリップ対を等角度間隔で放射方向に配置し、その回転体に設けた一対の縦軸で回転自由に支持されるグリップベースの第１レバー片の自由端同士をリンクにより連結し、一方の縦軸に遊嵌されたアームの先端に回転自由に設けられたローラーを前記スタンドに固定されたほぼ円形のカム板の外周に圧接するように設け、前記グリップベースの第２レバー片に連結した第１リンクの自由端と前記アームとを第２リンクにより連結し、前記回転体と同心に間欠回転軸側に回転可能に設けた調整リングのピンに一端が連結された第３リンクの自由端を、前記第１リンクと第２リンクとの連結軸に連結し、モータ装置により該調整リングを回転移動させることによって前記グリップ対の挟持部の間隔を調節するように設けた包装機におけるグリップ対の開度調節装置において、
前記回転体の上面に固定されたブラケットに揺動自由に設けた調整レバーの下向き片に一端が連結されたロッドの他端を前記調整リングに連結し、その調整レバーの横向き片の先端に回転自由に設けられたローラーを、前記間欠回転軸内に上下方向に移動自由に遊嵌された昇降軸のフランジで支承するように設け、その昇降軸の下部に固定されたナット体を機台の下方に設置したモータ装置により回転駆動される送りネジに螺合させるように設け、袋幅の大きさに対応する該モータ装置の出力軸の回転量を予め設定して制御装置の記憶部に記憶させ、操作部で入力される袋幅の寸法値に対応して該記憶部の制御値により該出力軸の回転量をフィードバック制御するように設け、前記モータ装置の駆動により前記昇降軸を移動させて前記調整リングを回転させることにより、グリップ対の挟持部の間隔を袋幅の大きさに合わせて調節するように構成したことを特徴とする。
【０００６】
【発明の作用及び効果】
モータ装置により送りネジが回転駆動して昇降軸を上方に移動させると、調整レバーが揺動して調整リングを時計方向に小角度だけ回転させて、調整リングに一端が連結された第３リンクによって第２レバー片を内方に移動させる。これにより、第１レバー片は互いに外方に回転してグリップ対の包装袋の側縁を挟持する挟持部の間隔が広げられる。
【０００７】
また、送りネジが上記と反対方向に回転駆動して昇降軸を下方に移動させると、調整リングは反時計方向に小角度だけ回転して第２レバー片を外方に移動させる。これにより、第１レバー片は互いに内方に回転してグリップ対の挟持部の間隔が狭められる。
【０００８】
グリップ対の開度を袋幅の大きさに合わせて自動的に調節するには、袋幅の大きさに対応するモータ装置の出力軸の回転量を予め設定して包装機の制御装置の記憶部に記憶させておき、袋幅の寸法値が操作部で入力されると、それに対応した記憶部の制御値によりモータ装置の回転量をフィードバック制御して昇降軸の移動量を調節するように構成することにより容易に行うことができる。
【０００９】
この包装機におけるグリップ対の開度調節装置によれば、包装袋を挟持するグリップ対の開度調節をモータ装置の駆動により容易・迅速に行うことができる。加えて、その開度調節は包装機の運転中においても行うことができるので極めて安全である。
【００１０】
【発明の実施の形態】
以下に、本発明の実施の形態例を図面に基づいて説明する。図１は間欠回転軸の回転中心から左半分を示す縦断側面図、図２は図１の平面図、図３はグリップ対と調整リングとの関係を示す平面図、図４は調整レバーと調整リングとの関係を示す一部破断側面図、図５はサーボモータ装置による昇降軸を移動させる機構を示す側面図、図６は図５のＡ−Ａ線断面図である。
【００１１】
図１において、ロータリー方式の包装機の機台（図示せず）に立設されたスタンド１には、縦向きの間欠回転軸２を軸受３を介して回転自由に支持している。その間欠回転軸２の下部は、機台の下面に設置された図５に一部を表すインデックス装置５の出力軸６に固定支持されている。１０は間欠回転軸２の上部フランジ２ａに取り付けられた台板７に固定された環状の回転体１０である。その回転体１０の下面と台板７の外周縁に形成された段部８との間には調整リング９を同心に配設し、その調整リング９の内縁部９ａを段部８に係合させて、調整リング９を前記間欠回転軸２側に対して回転可能に設ける。１４は前記スタンド１の上部フランジ１ａに固定されたほぼ円形のカム板である。
【００１２】
上記回転体１０には、多数の（要するにステーション数と同数）包装袋を挟持するためのグリップ対１５を等角度間隔で放射方向に配置する。詳しくは、図１、図２に示すように、回転体１０の外周縁部１０ａに前記等角度間隔で設けられた一対の縦軸１２、１２でグリップ対１５のグリップベース１６、１９を回転自由に支持する。一方のグリップベース１６の第１レバー片１７と、他方のグリップベース１９の第１レバー片２０の自由端同士はリンク１８により連結されている。グリップベース１９側の一方の縦軸１２の下部に遊嵌されたアーム２２の先端部２２ａにはローラー２３を回転自由に軸支し、そのローラー２３を図示しないバネの弾力により前記カム板１１の外周に圧接するように設ける。
【００１３】
前記グリップベース１９の第２レバー片２１には第１リンク２４の一端を連結し、その第１リンク２４の自由端と、前記アーム２２とを第２リンク２５により連結する。さらに、上記調整リング９に固定されたピン２７に一端が連結された第３リンク２８の自由端を、第１リンク２４と第２リンク２５との連結軸２６に連結する。また、上記グリップベース１６、１９の外側部には、公知構造の可動押圧片１５ｂを摺動自在に装着したグリップ対本体１５ａを夫々取り付ける。それらグリップ対本体１５ａの先端部と可動押圧片１５ｂの先端部とにより、包装袋ａの側縁を挟持する挟持部１５ｃを構成する。
【００１４】
図２、図４に示すように、上記回転体１０の上面に固定されたブラケット３０には、下向き片３２と横向き片３３とを一体形成した調整レバー３１を横軸３４で支持してその調整レバー３１を揺動自由に設ける。その下向き片３２に一端を連結したロッド３５の他端は、上記調整リング９に固定されて回転体１０の長孔１３から上方に突出するピン３６に連結されている。また、横向き片３３の先端にはローラー３７を回転自由に設ける。
【００１５】
４０は上記間欠回転軸２内に上下方向に移動自由に遊嵌された昇降軸である。図１に示すように、その昇降軸４０には、間欠回転軸２の上端よりも上方に突出する位置にフランジ４１を設け、そのフランジ４１で前記調整レバー３１のローラー３７を支承するように設けている。図５、図６に示すように、昇降軸４０の下部には、ナット体４２の取付穴４５を挿入してボルト４６を締め付けることにより同ナット体４２を固定する。そのナット体４２の先端のボス４３には、雌ネジ４４が縦向きに形成されている。４８はネジ部分４９の下部に従動スプロケット５０を固定した軸部４８ａをカラー５１を介して支持板５２に遊嵌すると共に、そのネジ部分４９から上方へ延びる軸部４８ｂを上記インデックス装置５の下面に固定された支持板５３に遊嵌して回転可能に設けられた送りネジである。この送りネジ４８のネジ部分４９には、前記ナット体４２の雌ネジ４４が螺合されている。５５、５６は前記ナット体４２に設けられた突片４２ａの上下位置に夫々取り付けた上昇端検知片及び下降端検知片、５７は支持板５３に取り付けられた近接スイッチ、５８は支持板５２に取り付けられた近接スイッチである。
【００１６】
機台の下枠６０上に固定されたブラケット６１には、出力軸６２ａを下向きにしてサーボモータ装置６２を取り付け、その出力軸６２ａに駆動スプロケット６３が取り付けられている。６４は駆動スプロケット６３のボス６３ａに固定された円板であり、その円板６４の外周縁には環状に多数の透孔６５が穿設されている。６６は前記円板６４の透孔６５に発光部及び受光部を対応するように前記ブラケット６１に設けられた光電センサーである。６７は駆動スプロケット６３と従動スプロケット５０とに架け渡されたチェンである。
【００１７】
つぎに、上記構成になるグリップ対の開度調節装置の作動について説明する。サーボモータ装置６２により送りネジ４８が回転駆動されると、その送りネジ４８に螺合されたナット体４２が昇降軸４０と共に上方に移動する。その昇降軸４０の上昇動作により、図４に示すように調整レバー３１の横向き片３３が揺動してロッド３５を左方向へ移動させ、図２に示すように調整リング９を時計方向に小角度だけ回転させる。その調整リング９の回転移動に第３リンク２８、第１リンク２４が追随して第２レバー片２１を内方に移動させる。これにより、第１レバー片２０及び第１レバー片１７は互いに外方に回転するので、グリップ対１５の挟持部１５ｃの間隔Ｌが広げられる。
【００１８】
また、サーボモータ装置６２により送りネジ４８が上記と反対方向に回転駆動されると、昇降軸４０は下方に移動して調整リングは反時計方向に小角度だけ回転する。これにより、第２レバー片２１が外方に移動して第１レバー片２０及び第１レバー片１７は互いに内方に回転するので、グリップ対１５の挟持部１５ｃの間隔Ｌは狭められる。
【００１９】
そのグリップ対１５の開度たる間隔Ｌについては、上記昇降軸４０の上昇移動量により決定される。そこで、袋幅の大きさに対応するサーボモータ装置６２の出力軸６２ａの回転量を予め設定して包装機の制御部に記憶処理させておき、入力される袋幅の大きさに合わせて、その制御部の指令によりサーボモータ装置６２を駆動し、その回転角を円板６４と光電センサー６６とにより検出してそのパルス信号をサーボモータ装置６２にフィードバックしその回転量を制御することにより、グリップ対１５の開度をほぼ自動的に調節することができる。
【図面の簡単な説明】
【図１】間欠回転軸の回転中心から左半分を示す縦断側面図
【図２】図１の平面図
【図３】グリップ対と調整リングとの関係を示す平面図
【図４】調整レバーと調整リングとの関係を示す一部破断側面図
【図５】サーボモータ装置による昇降軸を移動させる機構を示す側面図
【図６】図５のＡ−Ａ線断面図
【符号の説明】
ａ→包装袋 Ｌ→間隔（グリップ対の開度）
１→スタンド ２→間欠回転軸 ９→調整リング １０→回転体
１２→縦軸 １４→カム板
１５→グリップ対 １５ａ→グリップ対本体 １５ｂ→可動押圧片
１５ｃ→挟持部 １６、１９→グリップベース １７、２０→第１レバー片
１８→リンク ２１→第２レバー片 ２２→アーム ２３→ローラー
２４→第１リンク ２５→第２リンク ２６→連結軸 ２７→ピン
２８→第３リンク
３０→ブラケット ３１→調整レバー ３２→下向き片 ３３→横向き片
３５→ロッド ３６→ピン ３７→ローラー
４０→昇降軸 ４１→フランジ ４２→ナット体 ４８→送りネジ
５０→従動スプロケット ６２→サーボモータ装置（モータ装置）
６３→駆動スプロケット ６４→円板 ６６→光電センサー[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a device that adjusts the opening of a grip pair for holding a packaging bag in a rotary type packaging machine by adjusting the size of the bag width by driving a motor device.
[0002]
[Prior art]
As a conventional opening adjustment device for a grip pair for holding a packaging bag, as shown in Japanese Utility Model Publication No. 63-30652, the handle provided on the turning disc can be rotated to rotate the turning disc. By rotating the supported adjusting disk by a small angle, the opening of the grip pair can be adjusted by the interlocking action of the link mechanism and the sector gear provided between the adjusting disk and the grip pair. It is structured to adjust to the size of the.
[0003]
[Problems to be solved by the invention]
In the above-described conventional grip pair opening adjusting device, adjustment is performed while visually confirming the interval between the grip pair holding portions by rotating the handle. However, since the handle does not always move together with the swivel disk and stop at the same position, for example, the grip pair stopped at the bag feeding station before the packaging bag is opened and the position of the handle are separated. In some cases, it takes time to adjust the opening. In particular, in the case of a packaging machine that frequently changes the size of the bag width, the work for adjusting the opening of the grip pair becomes cumbersome and it is not easy to perform it quickly.
[0004]
An object of the present invention is to provide an opening adjusting device for a grip pair which is improved so that the opening adjustment of a grip pair holding a packaging bag can be easily performed by driving a motor device.
[0005]
[Means for Solving the Problems]
The invention according to claim 1 in order to achieve the object, the rotating body fixed to the intermittent rotation shaft rotating freely is provided on the stand, arranged radially at equal angular intervals a number of grip pair, its The free ends of the first lever pieces of the grip base that are rotatably supported by a pair of vertical axes provided on the rotating body are connected by a link, and are freely provided at the tip of an arm loosely fitted on one vertical axis. And a free end of the first link connected to the second lever piece of the grip base and the arm are provided by the second link so as to be pressed against the outer periphery of the substantially circular cam plate fixed to the stand. Connect the free end of the third link, one end of which is connected to the pin of the adjustment ring provided concentrically with the rotating body so as to be rotatable on the intermittent rotation shaft side, to the connection shaft of the first link and the second link. linked by a motor device In opening adjustment device grips pairs in the packaging machine which is provided to adjust the spacing of the clamping portion of the grip pair by rotating moving the adjustment ring,
The other end of the rod end downward piece of the rotary body adjusting lever swing was freely provided to a fixed bracket on the upper surface of which is connected to connected to said adjusting ring, rotating the tip of the transverse piece of the adjusting lever A roller provided freely is provided to be supported by a flange of a lifting shaft that is freely fitted vertically in the intermittent rotation shaft, and a nut body fixed to the lower portion of the lifting shaft is mounted on the machine base. provided so that is screwed to the feed screw which is rotationally driven by installing the motor unit downward, the storage unit preset to control the amount of rotation of the output shaft of the motor device corresponding to the size of the bag width The rotation amount of the output shaft is feedback-controlled by the control value of the storage unit corresponding to the dimension value of the bag width input by the operation unit, and the lifting shaft is moved by driving the motor device Let the adjustment By rotating the grayed, the spacing of the clamping portion of the grip pair is characterized by being configured to adjust according to the size of the bag width.
[0006]
[Action and effect of the invention]
When the feed screw is rotationally driven by the motor device to move the lifting shaft upward, the adjustment lever swings to rotate the adjustment ring by a small angle in the clockwise direction, and the third link having one end connected to the adjustment ring To move the second lever piece inward. As a result, the first lever pieces rotate outward from each other to widen the gap between the gripping portions that grip the side edges of the grip pair of packaging bags.
[0007]
When the feed screw is rotationally driven in the opposite direction to move the lifting shaft downward, the adjustment ring rotates counterclockwise by a small angle to move the second lever piece outward. As a result, the first lever pieces rotate inward from each other to narrow the gap between the gripping portions of the grip pair.
[0008]
In order to automatically adjust the opening of the grip pair according to the size of the bag width, the rotation amount of the output shaft of the motor device corresponding to the size of the bag width is preset and stored in the control device of the packaging machine. If the dimension value of the bag width is input at the operation unit, the amount of rotation of the motor device is feedback-controlled by the control value of the corresponding storage unit to adjust the moving amount of the lifting shaft. This can be easily done.
[0009]
According to the opening adjustment device for the grip pair in this packaging machine, the opening adjustment of the grip pair for holding the packaging bag can be easily and quickly performed by driving the motor device. In addition, the opening degree can be adjusted even during the operation of the packaging machine, which is extremely safe.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 is a longitudinal side view showing the left half from the rotation center of the intermittent rotation shaft, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a plan view showing the relationship between the grip pair and the adjustment ring, and FIG. 5 is a partially broken side view showing the relationship with the ring, FIG. 5 is a side view showing a mechanism for moving the lifting shaft by the servo motor device, and FIG. 6 is a sectional view taken along line AA of FIG.
[0011]
In FIG. 1, a vertical intermittent rotating shaft 2 is supported by a stand 1 erected on a machine base (not shown) of a rotary type packaging machine via a bearing 3 so as to freely rotate. The lower part of the intermittent rotation shaft 2 is fixedly supported by an output shaft 6 of an index device 5 that is partly shown in FIG. Reference numeral 10 denotes an annular rotating body 10 fixed to a base plate 7 attached to the upper flange 2 a of the intermittent rotating shaft 2. An adjustment ring 9 is disposed concentrically between the lower surface of the rotating body 10 and the step 8 formed on the outer peripheral edge of the base plate 7, and the inner edge 9 a of the adjustment ring 9 is engaged with the step 8. Thus, the adjustment ring 9 is provided so as to be rotatable with respect to the intermittent rotation shaft 2 side. Reference numeral 14 denotes a substantially circular cam plate fixed to the upper flange 1 a of the stand 1.
[0012]
In the rotating body 10, grip pairs 15 for sandwiching a large number (ie, the same number as the number of stations) packaging bags are arranged radially at equal angular intervals. Specifically, as shown in FIGS. 1 and 2, the grip bases 16 and 19 of the grip pair 15 can be freely rotated by a pair of longitudinal axes 12 and 12 provided at equal angular intervals on the outer peripheral edge portion 10 a of the rotating body 10. To support. The free ends of the first lever piece 17 of one grip base 16 and the first lever piece 20 of the other grip base 19 are connected by a link 18. A roller 23 is rotatably supported on the tip 22a of the arm 22 that is loosely fitted to the lower portion of one longitudinal axis 12 on the grip base 19 side, and the roller 23 is supported by the elasticity of a spring (not shown) of the cam plate 11. It is provided so as to be pressed against the outer periphery.
[0013]
One end of a first link 24 is connected to the second lever piece 21 of the grip base 19, and the free end of the first link 24 and the arm 22 are connected by a second link 25. Further, the free end of the third link 28 having one end connected to the pin 27 fixed to the adjustment ring 9 is connected to the connecting shaft 26 of the first link 24 and the second link 25. A grip pair main body 15a, which is slidably mounted with a movable pressing piece 15b having a known structure, is attached to the outside of the grip bases 16 and 19, respectively. The front end portion of the grip pair main body 15a and the front end portion of the movable pressing piece 15b constitute a sandwiching portion 15c that sandwiches the side edge of the packaging bag a.
[0014]
As shown in FIGS. 2 and 4, the bracket 30 fixed to the upper surface of the rotating body 10 is supported by an adjustment lever 31 integrally formed with a downward piece 32 and a horizontal piece 33 by a horizontal shaft 34 and adjusted. The lever 31 is provided to freely swing. The other end of the rod 35 having one end connected to the downward piece 32 is connected to a pin 36 that is fixed to the adjustment ring 9 and protrudes upward from the long hole 13 of the rotating body 10. In addition, a roller 37 is rotatably provided at the tip of the lateral piece 33.
[0015]
Reference numeral 40 denotes an elevating shaft that is loosely fitted in the intermittent rotating shaft 2 so as to move freely in the vertical direction. As shown in FIG. 1 , the lifting shaft 40 is provided with a flange 41 at a position protruding above the upper end of the intermittent rotation shaft 2, and the flange 41 is provided to support the roller 37 of the adjustment lever 31. It is . As shown in FIGS. 5 and 6, the nut body 42 is fixed to the lower portion of the elevating shaft 40 by inserting a mounting hole 45 of the nut body 42 and tightening a bolt 46. A female screw 44 is formed vertically on the boss 43 at the tip of the nut body 42. 48, a shaft portion 48a to which a driven sprocket 50 is fixed below the screw portion 49 is loosely fitted to the support plate 52 via a collar 51, and a shaft portion 48b extending upward from the screw portion 49 is provided on the lower surface of the index device 5. This is a feed screw that is rotatably fitted to the support plate 53 that is fixed to the support plate 53 so as to be rotatable. A female screw 44 of the nut body 42 is screwed into a screw portion 49 of the feed screw 48. Reference numerals 55 and 56 denote ascending end detecting pieces and descending end detecting pieces respectively attached to the upper and lower positions of the projecting piece 42a provided on the nut body 42, 57 denotes a proximity switch attached to the support plate 53, and 58 denotes a support plate 52. It is an attached proximity switch.
[0016]
A servo motor device 62 is attached to the bracket 61 fixed on the lower frame 60 of the machine base with the output shaft 62a facing downward, and a drive sprocket 63 is attached to the output shaft 62a. Reference numeral 64 denotes a disc fixed to the boss 63a of the drive sprocket 63, and a large number of through holes 65 are formed in an annular shape on the outer peripheral edge of the disc 64. A photoelectric sensor 66 is provided on the bracket 61 so that the light emitting part and the light receiving part correspond to the through hole 65 of the disk 64. A chain 67 spans the drive sprocket 63 and the driven sprocket 50.
[0017]
Next, the operation of the opening adjustment device for the grip pair having the above-described configuration will be described. When the feed screw 48 is rotationally driven by the servo motor device 62, the nut body 42 screwed to the feed screw 48 moves upward together with the lifting shaft 40. As the lifting shaft 40 moves up, the lateral piece 33 of the adjustment lever 31 swings as shown in FIG. 4 to move the rod 35 to the left, and the adjustment ring 9 is moved clockwise as shown in FIG. Rotate only the angle. The third link 28 and the first link 24 follow the rotational movement of the adjustment ring 9 to move the second lever piece 21 inward. Thereby, since the 1st lever piece 20 and the 1st lever piece 17 rotate mutually outward, the space | interval L of the clamping part 15c of the grip pair 15 is expanded.
[0018]
When the feed screw 48 is rotationally driven in the opposite direction by the servo motor device 62, the elevating shaft 40 moves downward and the adjustment ring rotates counterclockwise by a small angle. As a result, the second lever piece 21 moves outward and the first lever piece 20 and the first lever piece 17 rotate inward from each other, so that the interval L between the holding portions 15c of the grip pair 15 is reduced.
[0019]
The interval L that is the opening of the grip pair 15 is determined by the amount of upward movement of the lifting shaft 40. Therefore, the rotation amount of the output shaft 62a of the servo motor device 62 corresponding to the size of the bag width is preset and stored in the control unit of the packaging machine, and according to the size of the input bag width, By driving the servo motor device 62 according to the command of the control unit, the rotation angle is detected by the disc 64 and the photoelectric sensor 66, the pulse signal is fed back to the servo motor device 62, and the rotation amount is controlled, The opening degree of the grip pair 15 can be adjusted almost automatically.
[Brief description of the drawings]
FIG. 1 is a longitudinal side view showing a left half from the rotation center of an intermittent rotation shaft. FIG. 2 is a plan view of FIG. 1. FIG. 3 is a plan view showing a relationship between a grip pair and an adjustment ring. FIG. 5 is a partially broken side view showing the relationship with the adjustment ring. FIG. 5 is a side view showing a mechanism for moving a lifting shaft by a servo motor device. FIG. 6 is a sectional view taken along line AA in FIG.
a → Packing bag L → Interval (Grip pair opening)
1 → Stand 2 → Intermittent rotating shaft 9 → Adjusting ring 10 → Rotating body 12 → Vertical axis 14 → Cam plate 15 → Grip pair 15a → Grip pair main body 15b → Moving pressing piece 15c → Holding portion 16, 19 → Grip base 17, 20 → first lever piece 18 → link 21 → second lever piece 22 → arm 23 → roller 24 → first link 25 → second link 26 → connection shaft 27 → pin 28 → third link 30 → bracket 31 → adjustment lever 32 → downward piece 33 → lateral piece 35 → rod 36 → pin 37 → roller 40 → lift shaft 41 → flange 42 → nut body 48 → feed screw 50 → driven sprocket 62 → servo motor device (motor device)
63 → Drive sprocket 64 → Disk 66 → Photoelectric sensor

Claims (1)

スタンドに回転自由に設けた間欠回転軸に固定された回転体に、多数のグリップ対を等角度間隔で放射方向に配置し、その回転体に設けた一対の縦軸で回転自由に支持されるグリップベースの第１レバー片の自由端同士をリンクにより連結し、一方の縦軸に遊嵌されたアームの先端に回転自由に設けられたローラーを前記スタンドに固定されたほぼ円形のカム板の外周に圧接するように設け、前記グリップベースの第２レバー片に連結した第１リンクの自由端と前記アームとを第２リンクにより連結し、前記回転体と同心に間欠回転軸側に回転可能に設けた調整リングのピンに一端が連結された第３リンクの自由端を、前記第１リンクと第２リンクとの連結軸に連結し、モータ装置により該調整リングを回転移動させることによって前記グリップ対の挟持部の間隔を調節するように設けた包装機におけるグリップ対の開度調節装置において、
前記回転体の上面に固定されたブラケットに揺動自由に設けた調整レバーの下向き片に一端が連結されたロッドの他端を前記調整リングに連結し、その調整レバーの横向き片の先端に回転自由に設けられたローラーを、前記間欠回転軸内に上下方向に移動自由に遊嵌された昇降軸のフランジで支承するように設け、その昇降軸の下部に固定されたナット体を機台の下方に設置したモータ装置により回転駆動される送りネジに螺合させるように設け、袋幅の大きさに対応する該モータ装置の出力軸の回転量を予め設定して制御装置の記憶部に記憶させ、操作部で入力される袋幅の寸法値に対応して該記憶部の制御値により該出力軸の回転量をフィードバック制御するように設け、前記モータ装置の駆動により前記昇降軸を移動させて前記調整リングを回転させることにより、グリップ対の挟持部の間隔を袋幅の大きさに合わせて調節するように構成したことを特徴とする包装機におけるグリップ対の開度調節装置。Rotatably intermittently rotating shaft rotating body fixed to that provided in the stand, arranged radially at equal angular intervals a number of grip pair is rotatably supported by a pair of vertical axis provided on the rotary member The free end of the first lever piece of the grip base is connected by a link, and a roller provided at the tip of an arm loosely fitted on one of the vertical axes is rotatably provided with a substantially circular cam plate fixed to the stand. The free end of the first link connected to the second lever piece of the grip base and the arm are connected by a second link so as to be in pressure contact with the outer periphery, and can be rotated concentrically with the rotating body toward the intermittent rotating shaft. The free end of the third link, one end of which is connected to the pin of the adjustment ring provided in the above, is connected to the connection shaft of the first link and the second link, and the adjustment ring is rotated and moved by the motor device. Guri In opening adjustment device grips pairs in providing a packaging machine so as to adjust the distance between the holding portions of the flop pair,
The other end of the rod end downward piece of the rotary body adjusting lever swing was freely provided to a fixed bracket on the upper surface of which is connected to connected to said adjusting ring, rotating the tip of the transverse piece of the adjusting lever A roller provided freely is provided to be supported by a flange of a lifting shaft that is freely fitted vertically in the intermittent rotation shaft, and a nut body fixed to the lower portion of the lifting shaft is mounted on the machine base. provided so that is screwed to the feed screw which is rotationally driven by installing the motor unit downward, the storage unit preset to control the amount of rotation of the output shaft of the motor device corresponding to the size of the bag width The rotation amount of the output shaft is feedback-controlled by the control value of the storage unit corresponding to the dimension value of the bag width input by the operation unit, and the lifting shaft is moved by driving the motor device Let the adjustment By rotating the grayed, opening adjustment device grips pairs in packaging machine the distance between the clamping portion of the grip pair is characterized by being configured to adjust according to the size of the bag width.
JP32915499A 1999-11-19 1999-11-19 Grip pair opening adjustment device for packaging machines Expired - Fee Related JP3554236B2 (en)

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JP2015196537A (en) * 2014-04-03 2015-11-09 ゼネラルパッカー株式会社 Grip width adjusting device, and packaging machine having the same
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