JP4406557B2 - Belt conveyor - Google Patents

Belt conveyor Download PDF

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JP4406557B2
JP4406557B2 JP2003424631A JP2003424631A JP4406557B2 JP 4406557 B2 JP4406557 B2 JP 4406557B2 JP 2003424631 A JP2003424631 A JP 2003424631A JP 2003424631 A JP2003424631 A JP 2003424631A JP 4406557 B2 JP4406557 B2 JP 4406557B2
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belt
lever
frame
hole
slide bracket
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JP2005179017A (en
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啓三 向
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Sanki Engineering Co Ltd
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Description

本発明は、ベルトの着脱や洗浄時にベルト張力を容易に緩めることのできるベルトコンベヤに関するものである。   The present invention relates to a belt conveyor that can easily loosen a belt tension when attaching and detaching a belt and cleaning.

通常のベルトコンベヤは、エンドレスベルト裏面に駆動プーリを接触させ、テンションローラによりベルトに張力を与えて駆動しているので、ベルトの交換や洗浄時には駆動部の支持機構を分解しないとベルトを取外すことができない。特に、食品や医薬品の搬送ラインでは、ベルト表面その他に付着、堆積した微細な砕片や粉塵を取除くためコンベヤを分解してベルトを外し、各部を洗浄した後に再組立していたので多大の労力と時間を要していた。
このため、延長フレームの先端部に、テンションプーリ軸を挿通する長孔とテンションプーリをベルト緊張方向に付勢するバネを設けると共に、延長フレームの基部に水平調整機構を取付け、さらに延長フレーム基部より離れた位置に駆動プーリを配置し、延長フレームを水平に伸張したときにベルトを緊張させ、延長フレームを折り畳んでコンベヤ全体の長さを縮めると同時にベルト外しを容易にするものが知られている(例えば特許文献1参照)。また、頭部又は尾部プーリ近くの帰り側ベルトに接する当接ローラを設け、ベルト緊張時には当接ローラをフック止めして頭部又は尾部プーリ側に押し付け、ベルト緩め時には当接ローラのフックがけを解除して頭部又は尾部プーリ側から離すようにしたもの(例えば特許文献2参照)、フレームの一端部に、頭部プーリを有して上下方向に回転自在な補助フレームを取付けたもの(例えば特許文献3、4参照)、フレームの一端部に、頭部プーリを有してプーリ軸線間距離方向にスライド可能にスライドフレームを取付けたもの(例えば特許文献5参照)、或いは、フレーム下部に駆動プーリとテンションプーリとを設け、ベルト表面を駆動プーリに接触させ、かつ駆動プーリとテンションプーリとの間にベルトをS字状かけてベルトを駆動するようにし、スナブローラを離すようにしたもの(例えば特許文献6参照)も知られている。
The normal belt conveyor is driven by contacting the drive pulley with the back of the endless belt and applying tension to the belt with a tension roller. Therefore, the belt must be removed without disassembling the drive support mechanism when replacing or cleaning the belt. I can't. In particular, in the food and pharmaceutical transportation lines, the conveyor was disassembled to remove the fine debris and dust that adhered to and accumulated on the belt surface, and the belt was removed. And took time.
For this purpose, a long hole through which the tension pulley shaft is inserted and a spring that urges the tension pulley in the belt tension direction are provided at the tip of the extension frame, and a horizontal adjustment mechanism is attached to the base of the extension frame. It is known to dispose the drive pulley at a distant position, tension the belt when the extension frame is extended horizontally, and fold the extension frame to reduce the length of the entire conveyor and at the same time easily remove the belt (For example, refer to Patent Document 1). Also, a contact roller that contacts the return belt near the head or tail pulley is provided. When the belt is tensioned, the contact roller is hooked and pressed against the head or tail pulley, and when the belt is loosened, the contact roller is hooked. One that is released and separated from the head or tail pulley side (for example, see Patent Document 2), and one end of the frame that has a head pulley and is attached with an auxiliary frame that is rotatable in the vertical direction (for example, Patent Documents 3 and 4), one end of the frame having a head pulley and a slide frame attached so as to be slidable in the distance direction between the pulley axes (for example, refer to Patent Document 5), or driven at the lower part of the frame A pulley and tension pulley are provided, the belt surface is brought into contact with the drive pulley, and the belt is driven with an S-shaped belt between the drive pulley and the tension pulley. In this case, a snubber is separated (see, for example, Patent Document 6).

実開平9−74824号公報(第2頁、右欄第29−48行、図1)。Japanese Utility Model Publication No. 9-74824 (page 2, right column, lines 29-48, FIG. 1). 実開平5−37732号公報(第10頁、第19−29行、図7)。Japanese Utility Model Laid-Open No. 5-37732 (page 10, lines 19-29, FIG. 7). 実用新案登録第2582153号公報(第3頁、右欄第27−41行、図1、図3)。Utility Model Registration No. 2582153 (page 3, right column, lines 27-41, FIGS. 1 and 3). 実開平7−38030号公報(第5頁、第9−19行、図6)。Japanese Utility Model Laid-Open No. 7-38030 (page 5, lines 9-19, FIG. 6). 特開2000−185813号公報(第4頁、左欄第21−29行、図3、4,5)。JP 2000-185813 A (page 4, left column, lines 21-29, FIGS. 3, 4 and 5). 特開2002−12312号公報(第5頁、右欄第10−24行、図6)。JP-A-2002-12312 (5th page, right column, lines 10-24, FIG. 6).

上記のように、従来のベルト緩め装置は、本体フレームの片側端部で軸を中心に回り、跳ね上げができる補助フレームを設けている。別の緩め装置としては、本体フレームの片側端部で、水平方向にスライドさせることでフレーム全長を伸縮できるようにした補助フレームを取付け、本体フレーム側の軸を中心に回るレバーの途中にあるピンの水平移動により補助フレームを移動し、ロックピンを介して固定するようにしている。これらのうち、特許文献6は、コンベヤ本体の中間部に駆動ローラを設けると共に、駆動ローラ近くのベルトをスナブローラによりを絞って駆動ローラに圧接させ、ベルトを外す時にはスナブローラの駆動ローラへの圧接を離脱すようにしている。また、上記特許文献3〜5では、補助フレームを持ち上げるため、逃げ空間を確保する必要があり、梃子の力点と作用点が近いため伸縮レバー式或いはリンク式では張力が大きな力がかかるため力を要するほか、レバーの戻り防止対策(ロックピンなど)が必要となる。
本発明の目的は、フレームの頭部又は尾部側に、頭部又は尾部プーリを支持したスライドブラケットを取付け、カムの作用でスライドブラケットを平行移動させることによりベルトを緩めてベルトの取外しを容易にしたコンベヤを提供するものである。
As described above, the conventional belt loosening device is provided with the auxiliary frame that can be swung up around the axis at one end of the main body frame. As another loosening device, at one end of the main body frame, attach an auxiliary frame that can extend and contract the entire length of the frame by sliding horizontally, and a pin in the middle of the lever that rotates around the axis on the main body frame side The auxiliary frame is moved by the horizontal movement and fixed through a lock pin. Among these, in Patent Document 6, a driving roller is provided in the middle portion of the conveyor body, and a belt near the driving roller is squeezed by the snubber roller and pressed against the driving roller. When the belt is removed, the snubbing roller is pressed against the driving roller. I try to leave. Further, in Patent Documents 3 to 5, it is necessary to secure a clearance space in order to lift the auxiliary frame, and since the force point of the lever is close to the action point, the extension lever type or the link type applies a large force to the force. In addition, lever return prevention measures (lock pins, etc.) are required.
An object of the present invention is to attach a slide bracket that supports a head or tail pulley on the head or tail side of a frame, and by moving the slide bracket in parallel by the action of a cam, the belt is loosened and the belt can be easily removed. A conveyor is provided.

上記目的を達成するため、本発明ベルトコンベヤは、カムとレバーの組合せにより頭部又は尾部プーリを平行移動させてベルトを緩めるようにしたものである。
すなわち、請求項1は、フレームのほぼ中央に駆動プーリ及び絞りプーリを含むドライブユニットを設け、絞りプーリによりベルト裏面を駆動プーリに圧接してベルトを走行させるコンベヤにおいて;フレーム端部近くの左右側板に、フレーム長手方向に進退可能なスライドブラケットを取付けて頭部又は尾部プーリのどちらかを支持し、前記スライドブラケットの長手方向に沿ってあけた長孔にレバー回動軸を挿通し、前記長孔を貫挿して突出するレバー回動軸端に半円弧孔を有するカム板を固着すると共に、前記スライドブラケット外面に前記円弧孔に遊嵌するカムフォロアを取付け、少なくとも左右いずれか一方のカム板に前記レバー回動軸端を突設させて、前記半円弧孔の端部を結ぶ線と平行に延び、かつ前記半円弧孔に対する偏心位置を回動中心とするレバーを固着してなり;前記レバーの回動に伴うカムフォロアの変位によりスライドブラケットを所定距離後退させてベルトを緩め、レバーの逆方向回動によってスライドブラケットを原位置に戻してベルト張力を復元させるようにした、ことを特徴とするベルトコンベヤである
In order to achieve the above object, the belt conveyor of the present invention is such that the head or tail pulley is translated by a combination of a cam and a lever to loosen the belt.
That is, claim 1 is a conveyor in which a drive unit including a drive pulley and a throttle pulley is provided in the approximate center of the frame, and the belt runs by pressing the back surface of the belt against the drive pulley by the throttle pulley; The slide bracket that can be advanced and retracted in the longitudinal direction of the frame is attached to support either the head or the tail pulley , and the lever rotation shaft is inserted into the elongated hole that is formed along the longitudinal direction of the slide bracket. together with fixed cam plate having a semi-circular arc hole in the lever pivot shaft end which protrudes inserted through, attach the cam follower to be loosely fitted in the semicircular hole in the slide bracket outer surface, at least one of the left and right cam plates by projecting the lever pivot shaft end, wherein extending parallel to the line connecting the ends of the semicircular arc hole, and polarized with respect to the semicircular hole The lever is fixed at the center of rotation; the cam follower is displaced as the lever moves to retract the slide bracket by a predetermined distance to loosen the belt, and the lever is rotated in the reverse direction to return the slide bracket to the original position. The belt conveyor is characterized in that the belt tension is restored to restore the belt tension.

請求項2は、前記スライドブラケットの先端には、水平方向先端側に開口して前記頭部又は尾部プーリどちらかの軸を支持する軸受が形成され;前記レバー回動軸挿通位置より前記スライドブラケットの先端寄りの左右フレーム側板に長孔を設けることで、前記フレーム両側に設置される両スライドブラケットを接続するフレームツナギ材兼ガイドバーを挿通すると共に、前記フレーム側板と前記スライドブラケットとの間に、前記レバー回動軸通し孔及び前記フレームツナギ材兼ガイドバー挿通用長孔を有する樹脂製ガイドプレートを配置してフレーム側板に固着し;さらに、前記スライドブラケット外面に前記半円弧孔に遊嵌するカムフォロアを前記フレームツナギ材兼ガイドバーの軸端に設けたことを特徴とする請求項1に記載のベルトコンベヤである。請求項3は、前記カム板に形成した半円弧孔は、レバーの回動端における力線と、前記半円弧孔の中心を含み、かつ半円弧孔両端とを結ぶ線とを一致させて、回動端でカムフォロアの変位に対するデッドポイントとなるよう180°の中心角を有している、ことを特徴とする請求項1に記載のベルトコンベヤである
Claim 2, wherein the distal end of the slide bracket, horizontally distal opening and a bearing for supporting the head or tail pulleys either axis is formed on the side; the slide bracket from shaft insertion position the lever times by providing the elongated hole on the left and right frame side plates of the front end side of the, with inserting the frame tethers and guide bar for connecting the two slide brackets installed in the frame on both sides, between the frame side plate and said slide bracket , secured to the lever pivot shaft through hole and the frame ties and guide resinous guide plate frame side plates arranged with a bar insertion long hole; Furthermore, loosely fitted in the semicircular hole in the slide bracket outer surface Bell according to claim 1, wherein the cam follower, characterized in that provided at the shaft end of the frame ties and guide bar Ru conveyor der. Claim 3, semicircular hole formed in the cam plate, the force line at the pivot end of the lever includes a center of the semicircular arc hole, and by matching the line connecting the semicircular arc hole ends, 2. The belt conveyor according to claim 1, wherein the belt conveyor has a central angle of 180 [deg.] So as to be a dead point with respect to the displacement of the cam follower at the rotating end.

本発明は、ベルト着脱時にベルト張力を緩めたい時に、レバーと半円形カムとの回動によるカムフォロワの変位によって、スライドブラケットを移動させてベルト張力を緩め、その逆方向の回動でスライドブラケットを押し戻してベルトに張力をあたえる。このようにすると、レバーにかかる反力が小さく、すべり性のよい樹脂製ガイドプレートによりスライドブラケット及びカムフォロワをガイドするため、小さい力で移動することができ、音もしない。ベルトを緩め側又は緊張側にセットした際に、レバーの回動端で半円弧孔の端でデッドポイントとなるためカムフォロワが静止され、セット時に戻る力は発生せず、ベルト外しを安全かつ容易に行うことができる。   In the present invention, when it is desired to loosen the belt tension when attaching and detaching the belt, the slide bracket is moved by the displacement of the cam follower due to the rotation of the lever and the semicircular cam to loosen the belt tension. Push back to apply tension to the belt. In this way, the reaction force applied to the lever is small, and the slide bracket and the cam follower are guided by the resin guide plate having a good sliding property. Therefore, the lever can be moved with a small force and no sound is generated. When the belt is set on the loose side or tension side, the cam follower is stationary because it becomes a dead point at the end of the semi-circular hole at the end of the lever rotation, and there is no force to return during setting, so belt removal is safe and easy Can be done.

図1は本発明ベルトコンベヤの正面図である。図2は図1の頭部プーリ付近の拡大正面図、図3は同じく側面図、図4は平面図、図5は斜視図である。
フレーム1のほぼ中央に駆動プーリ3及び絞りプーリ4を含む駆動ユニット2を設け、フレーム1の頭尾部にプーリ6、7を設けてエンドレスベルト8を掛け渡し、テークアップ5付の絞りプーリ4によりベルト裏面を駆動プーリ3に圧接してベルト8を走行させる。図示例は、脚ユニット9により片持ち支持されたフレーム1のほぼ中央に駆動モータ、駆動プーリ及び絞りプーリを含むドライブユニットを設けたが、フレーム1を脚ユニット9により両サイド支持に変えたり、駆動モータ1をフレーム下部に設置したりしてもよい。また、ベルト8は樹脂ベルトに限定されず、例えば特開2003−54723号公報に開示されたネットコンベヤまたはモジュラベルトコンベヤも使用される。
FIG. 1 is a front view of the belt conveyor of the present invention. 2 is an enlarged front view of the vicinity of the head pulley in FIG. 1, FIG. 3 is a side view, FIG. 4 is a plan view, and FIG. 5 is a perspective view.
A drive unit 2 including a drive pulley 3 and an aperture pulley 4 is provided in the approximate center of the frame 1, pulleys 6 and 7 are provided on the head and tail of the frame 1, an endless belt 8 is stretched, and an aperture pulley 4 with a take-up 5 is provided. The belt 8 is caused to travel by pressing the back surface of the belt against the driving pulley 3. In the illustrated example, a drive unit including a drive motor, a drive pulley, and an aperture pulley is provided in the center of the frame 1 that is cantilevered by the leg unit 9. The motor 1 may be installed under the frame. Further, the belt 8 is not limited to a resin belt, and for example, a net conveyor or a modular conveyor disclosed in JP-A-2003-54723 is also used.

フレーム1は、図4〜6に示すように、中央長手方向にベルト蛇行防止用の溝1bを有するスライドベッド1aと、スライドベッド1aの左右辺を折曲げて形成させた側板1c、1cとからなる。ベルトゆるめ側におけるフレーム側板1c、1cに、滑り性のよい樹脂製ガイドプレート10、10を固着し、その外面にはスライドブラケット11、11を取付ける。スライドブラケット11、11は、フレーム長手方向に所定距離(後記長孔13、26、36の有効距離)だけ移動可能で、かつ先端に頭部プーリ6(又は尾部プーリ7)の面取り軸端6a、6aを支持する横開き形のプーリ軸受30を形成させている。軸受30の後方に小ブラケット31を突設しアジャストねじ32を螺合して軸端6aの位置を微調整する。
更に、スライドブラケット11、11の外面には円弧孔15を有する半円状のカム14、14を配置する。また、前記ベルトゆるめ側のフレーム側板1c、1cには、2個の長孔36、36と1個の孔33をあけ、長孔36,36には前後のツナギ材17、18を挿通し、孔33にはカム14の偏心位置に回り止め状態に取付けたレバー16の回動軸12を挿通する。ツナギ材17,18は、後述するように、レバー16の作動によるスライドブラケット11、11の前後方向移動時のガイドバーを兼ねている。図2,3,7中、符号33はベルト表面のごみ掻き取り用スクレーパである。
As shown in FIGS. 4 to 6, the frame 1 includes a slide bed 1 a having a groove 1 b for preventing belt meandering in the central longitudinal direction, and side plates 1 c and 1 c formed by bending the left and right sides of the slide bed 1 a. Become. Resin guide plates 10 and 10 having good slipperiness are fixed to frame side plates 1c and 1c on the belt loosening side, and slide brackets 11 and 11 are attached to the outer surfaces thereof. The slide brackets 11 and 11 are movable by a predetermined distance in the longitudinal direction of the frame (an effective distance of the long holes 13, 26 and 36 described later), and the chamfered shaft ends 6a of the head pulley 6 (or the tail pulley 7) are arranged at the tips. A laterally open pulley bearing 30 that supports 6a is formed. A small bracket 31 protrudes behind the bearing 30 and an adjustment screw 32 is screwed to finely adjust the position of the shaft end 6a.
Furthermore, semicircular cams 14 and 14 having arc holes 15 are arranged on the outer surfaces of the slide brackets 11 and 11. The frame side plates 1c and 1c on the belt loosening side are provided with two long holes 36 and 36 and one hole 33. The long holes 36 and 36 are inserted with the front and rear jump material 17 and 18, respectively. The rotation shaft 12 of the lever 16 attached to the eccentric position of the cam 14 in a non-rotating state is inserted into the hole 33. As will be described later, the jumper members 17 and 18 also serve as guide bars when the slide brackets 11 and 11 are moved in the front-rear direction by the operation of the lever 16. In FIGS. 2, 3, and 7, reference numeral 33 denotes a scraper for scraping off the dust on the belt surface.

ガイドプレート10は、図6に示すように、前記フレーム側板1c、1cの長孔36,36及び丸孔33と同一位置に第1、第2の長孔26,26及びレバー回動軸通し孔23を有している。第1、第2の長孔26,26にはツナギ材17、18の端部をそれぞれ挿合すると共に、通し孔23にはレバー回動軸12の面取り軸端部12aを貫挿する。ガイドプレート10の回動軸通し孔23と第2の長孔26を挟んだ位置に皿孔27,27を設けて皿ねじ28,28を通し、皿ねじ28,28の先端をフレーム側板1c、1cのねじ孔29,29に螺合しガイドプレート10を固着する。   As shown in FIG. 6, the guide plate 10 has first and second long holes 26 and 26 and lever rotation shaft through holes at the same positions as the long holes 36 and 36 and the round holes 33 of the frame side plates 1c and 1c. 23. The end portions of the jumper members 17 and 18 are inserted into the first and second elongated holes 26 and 26, respectively, and the chamfered shaft end portion 12 a of the lever rotating shaft 12 is inserted into the through hole 23. Countersunk holes 27, 27 are provided at positions sandwiching the rotation shaft through hole 23 and the second elongated hole 26 of the guide plate 10, and the countersunk screws 28, 28 are passed through. The tips of the countersunk screws 28, 28 are connected to the frame side plate 1c, The guide plate 10 is fixed by screwing into the screw holes 29, 29 of 1c.

スライドブラケット11、11は、先端にプーリ軸受30からスライドブラケットの根元部に向かって2個のねじ通し孔35、24と1つの長孔13とを設ける。スライドブラケット内面の第1、第2の通し孔35,24の位置に、長孔26、26を貫通させた前記ツナギ材17、18の端面を当接させる。第1の通し孔35には、スライドブラケット11の外面からねじ25を通して第1のツナギ材17端に螺合する。また、ガイドレール10の第2の長孔26を経て、スライドブラケットの第2のねじ通し孔24に通してガイドプレート10の第2の長孔26を貫通させた第2のツナギ材18の端面に螺合する。
前記カム14の円弧孔15は、レバー16の回動端でカムフォロア21の変位に対するデッドポイントとなるよう中心角180°を有している。円弧孔15には、リング状のカムフォロア21が遊嵌され、その外部から段付ねじ22を通し、そのねじ部をスライドブラケット11にあけたねじ孔24に螺合して締め付ける。また、ガイドプレート10のレバー回動軸通し孔23及びスライドブラケット11の長孔13を貫通させたレバー回動軸端をカム14及びレバー16の回り止め角孔14a及び16aに挿合する(図6)。
The slide brackets 11 and 11 are provided with two screw-through holes 35 and 24 and one long hole 13 at the tip from the pulley bearing 30 toward the root of the slide bracket. The end surfaces of the jumper members 17 and 18 through which the long holes 26 and 26 pass are brought into contact with the positions of the first and second through holes 35 and 24 on the inner surface of the slide bracket. The first through hole 35 is screwed into the end of the first jumper member 17 through the screw 25 from the outer surface of the slide bracket 11. Further, the end surface of the second jumper material 18 that passes through the second long hole 26 of the guide plate 10 through the second screw hole 24 of the slide bracket through the second long hole 26 of the guide rail 10. Threaded onto.
The arc hole 15 of the cam 14 has a central angle of 180 ° so that it becomes a dead point for the displacement of the cam follower 21 at the rotating end of the lever 16. A ring-shaped cam follower 21 is loosely fitted into the arc hole 15, and a stepped screw 22 is passed from the outside, and the screw portion is screwed into a screw hole 24 formed in the slide bracket 11 and tightened. In addition, the lever rotation shaft end through which the lever rotation shaft through-hole 23 of the guide plate 10 and the long hole 13 of the slide bracket 11 are inserted is inserted into the rotation stop angle holes 14a and 16a of the cam 14 and the lever 16 (FIG. 6).

レバー回動軸12とカム14とは、レバー回動軸12の面取り軸端12aをカム14の偏心位置にあけた角孔14aと、レバー回動軸12の角孔16aに挿合することにより一体的に回動するようになっている。すなわち、レバー回動軸12をガイドプレート10のレバー回動軸通し孔23及びスライドブラケット11に設けた長孔13に貫通させ、その面取り軸端12aをカム14及びレバー16の回り止め用角孔14a,16aに挿合したうえ、カラー19及び支点支持用ねじ20を用いて回動用レバー16を固着することによりレバーとカムの回動を一体にしている(図6)。なお、前記スライドブラケット11は、カムの作動によってフレーム端で進退してフレーム長さを伸ばしたり、元の長さに縮めたりするため、伸縮ブラケットとも称される。   The lever rotating shaft 12 and the cam 14 are inserted into a square hole 14a in which the chamfered shaft end 12a of the lever rotating shaft 12 is opened at an eccentric position of the cam 14 and a square hole 16a of the lever rotating shaft 12. It is designed to rotate integrally. That is, the lever rotation shaft 12 is passed through the lever rotation shaft through hole 23 of the guide plate 10 and the long hole 13 provided in the slide bracket 11, and the chamfered shaft end 12 a is a square hole for preventing rotation of the cam 14 and the lever 16. 14a and 16a, and the lever 19 and the cam are rotated together by fixing the rotating lever 16 using the collar 19 and the fulcrum support screw 20 (FIG. 6). The slide bracket 11 is also referred to as an expansion / contraction bracket because it is extended or retracted at the end of the frame by the operation of the cam to increase the frame length or to reduce it to the original length.

図示例のカム板14は、円弧孔15にカムフォロア21を挿合して確動カムであって、水平に置かれたスライドブラケット11の外面に中心角180°とした円弧孔15を有しているため、レバー16の回動端でカムフォロア21が円弧孔15のいずれか端部のデッドポイントに静止する。すなわち、円弧孔15は、レバー16の回動端における力線と、円弧孔の中心を含み、かつ円弧孔両端とを結ぶ線とを一致させて、回動端でデッドポイントとなるよう中心角180°を有しており、レバー16の回動端でカムフォロア21が円弧孔の端に静止されてデッドポイントとなってロックされる。ただし、中心角は図示の例に限らず、90°〜180°又はそれ以上としてもよい。   The cam plate 14 in the illustrated example is a positive cam by inserting a cam follower 21 into an arc hole 15, and has an arc hole 15 with a central angle of 180 ° on the outer surface of the slide bracket 11 placed horizontally. Therefore, the cam follower 21 stops at the dead point at either end of the arc hole 15 at the rotating end of the lever 16. In other words, the arc hole 15 has a center angle so that the force line at the rotation end of the lever 16 and the line that includes the center of the arc hole and connects both ends of the arc hole coincide with each other to become a dead point at the rotation end. The cam follower 21 is stationary at the end of the arc hole at the rotating end of the lever 16 and locked as a dead point. However, the central angle is not limited to the illustrated example, and may be 90 ° to 180 ° or more.

平常運転時には、絞りプーリによって所定のベルト張力を付与しておき、モータ起動で駆動プーリによるベルト裏面への摩擦駆動でベルト8を走行させる。絞りプーリ4によってベルト走行運転中はベルトに一定の張力を付与するが、フレーム端で機長を縮小させてベルトを緩めたのち、絞りプーリを外して駆動ユニット2、頭尾部プーリ3間にかけたベルト8を取外す。すなわち、図1〜5に示すように、レバー16を正方向に回動させた状態では、カムフォロア21は円弧孔15の一方の端にあってスライドブラケット11が伸びてベルト8に張りを持たせている。   During normal operation, a predetermined belt tension is applied by the throttle pulley, and the belt 8 is caused to run by friction driving the belt back surface by the drive pulley when the motor is started. While the belt is running by the throttle pulley 4, a constant tension is applied to the belt. After the machine length is reduced at the frame end to loosen the belt, the throttle pulley is removed and the belt applied between the drive unit 2 and the head-and-tail pulley 3. 8 is removed. That is, as shown in FIGS. 1 to 5, when the lever 16 is rotated in the forward direction, the cam follower 21 is at one end of the arc hole 15, and the slide bracket 11 extends to tension the belt 8. ing.

図7はベルトゆるめ作動時の部分的拡大正面図、図8は同じく斜視図である。ベルトゆるめ時には、図1〜5の状態から図7の矢印に示すように、スライドブラケット11を平行移動により後退させてベルト7を弛ませる。すなわち、レバー16を正方向に回動させた状態(図1〜5)では、カムフォロア21は円弧孔15の一方の端にあるため、スライドブラケット11が伸びてベルト8に張りを持たせているが、レバー16を逆方向に回動させると、同期回動するカム14により円弧孔15の他方の端にカムフォロア21が移動しスライドブラケット11を水平に引き込ませて機長を縮め、ベルト8をゆるめることになるから、容易にベルトを取外すことができる。   FIG. 7 is a partially enlarged front view of the belt loosening operation, and FIG. 8 is a perspective view of the same. When the belt is loosened, as shown by the arrow in FIG. 7 from the state of FIGS. 1 to 5, the slide bracket 11 is moved backward by parallel movement to loosen the belt 7. That is, when the lever 16 is rotated in the forward direction (FIGS. 1 to 5), the cam follower 21 is at one end of the arc hole 15, so that the slide bracket 11 extends and the belt 8 is stretched. However, when the lever 16 is rotated in the reverse direction, the cam follower 21 is moved to the other end of the circular arc hole 15 by the cam 14 that rotates synchronously, the slide bracket 11 is drawn horizontally, the length is shortened, and the belt 8 is loosened. Therefore, the belt can be easily removed.

上記のように本発明は、ベルトゆるめ側のフレーム端にスライドブラケットを取付けて頭部又は尾部プーリを支持し、スライドブラケットの長手方向に沿ってあけた長孔にレバー回動軸を挿通し、レバー回動軸の両端に円弧孔を有するカムを固着する共に、伸縮スライドブラケットの外面にカムフォロアを設け、レバーを正方向に回動させた状態では、カムフォロアは円弧孔の一方の端にあってスライドブラケットが伸びてベルトに張りを持たせており、レバーを逆方向に回動させると、同期回動するカムにより円弧孔の他方の端にカムフォロアが移動しスライドブラケットを水平に引き込ませて機長を縮めることにより、ベルト外しを容易にすることができる。   As described above, the present invention attaches a slide bracket to the frame end on the belt loosening side to support the head or tail pulley, and inserts the lever rotation shaft into the long hole opened along the longitudinal direction of the slide bracket, When cams with arc holes are fixed to both ends of the lever rotation shaft, and a cam follower is provided on the outer surface of the telescopic slide bracket, the cam follower is located at one end of the arc hole when the lever is rotated in the forward direction. The slide bracket is extended and the belt is tensioned. When the lever is rotated in the reverse direction, the cam follower moves to the other end of the arc hole by the cam that rotates synchronously, and the slide bracket is pulled in horizontally. The belt can be easily removed by shortening.

本発明ベルトゆるめ装置を備えたコンベヤの正面図。The front view of the conveyor provided with this invention belt loosening apparatus. 図1の頭部プーリ部分を拡大して示した正面図。The front view which expanded and showed the head pulley part of FIG. 図2の側面図。The side view of FIG. 図2の平面図。The top view of FIG. 図2の斜視図。The perspective view of FIG. 図5の分解斜視図。FIG. 6 is an exploded perspective view of FIG. 5. ベルトゆるめ作動時の部分的拡大正面図。The partially expanded front view at the time of belt loosening operation | movement. 図6の斜視図。The perspective view of FIG.

符号の説明Explanation of symbols

1 フレーム 1a スライドベッド
1b 蛇行防止用溝 1c フレーム側板
2 駆動ユニット 3 駆動プーリ
4 絞りプーリ 5 テークアップ
6、7 頭尾部プーリ 6a プーリ軸端
8 ベルト 9 脚ユニット
10 ガイドプレート 11 スライドブラケット
12 レバー回動軸 12a 面取り軸端
14 カム(半円板) 14a、16a 回り止め角孔
15 円弧孔 16 レバー
13、26、36 長孔 17,18 ツナギ材兼ガイドバー
19 カラー 20 支点用ねじ
21 カムフォロア 22 段付ねじ
23、33 レバー回動軸通し孔 24、35 ねじ通し孔
25 ねじ 27 皿孔
28 皿ねじ 29 ねじ孔
30 軸受 31 小ブラケット
32 アジャストねじ 33 ごみ掻取り用スクレーパ
DESCRIPTION OF SYMBOLS 1 Frame 1a Slide bed 1b Meander prevention groove 1c Frame side plate 2 Drive unit 3 Drive pulley 4 Diaphragm pulley 5 Take-up 6, 7 Head tail pulley 6a Pulley shaft end 8 Belt 9 Leg unit 10 Guide plate 11 Slide bracket 12 Lever rotation Shaft 12a Chamfered shaft end 14 Cam (semi-circular disc) 14a, 16a Non-rotating square hole 15 Arc hole 16 Lever 13, 26, 36 Long hole 17, 18 Joint material and guide bar 19 Collar 20 Support screw 21 Cam follower 22 Stepped Screw 23, 33 Lever rotation shaft through hole 24, 35 Screw through hole 25 Screw 27 Countersunk hole 28 Countersunk screw 29 Screw hole 30 Bearing 31 Small bracket 32 Adjustment screw 33 Scraper for scraping

Claims (3)

フレームのほぼ中央に駆動プーリ及び絞りプーリを含むドライブユニットを設け、絞りプーリによりベルト裏面を駆動プーリに圧接してベルトを走行させるコンベヤにおいて、
フレーム端部近くの左右側板に、フレーム長手方向に進退可能なスライドブラケットを取付けて頭部又は尾部プーリのどちらかを支持し、前記スライドブラケットの長手方向に沿ってあけた長孔にレバー回動軸を挿通し、前記長孔を貫挿して突出するレバー回動軸端に半円弧孔を有するカム板を固着すると共に、前記スライドブラケット外面に前記円弧孔に遊嵌するカムフォロアを取付け、少なくとも左右いずれか一方のカム板に前記レバー回動軸端を突設させて、前記半円弧孔の端部を結ぶ線と平行に延び、かつ前記半円弧孔に対する偏心位置を回動中心とするレバーを固着してなり、
前記レバーの回動に伴うカムフォロアの変位によりスライドブラケットを所定距離後退させてベルトを緩め、レバーの逆方向回動によってスライドブラケットを原位置に戻してベルト張力を復元させるようにした、ことを特徴とするベルトコンベヤ
In a conveyor in which a drive unit including a drive pulley and a throttle pulley is provided at the approximate center of the frame, and the belt is driven by pressing the back surface of the belt against the drive pulley by the throttle pulley.
A left and right side plate near the frame end is attached with a slide bracket that can be moved back and forth in the longitudinal direction of the frame to support either the head or tail pulley , and the lever pivots in a long hole that opens along the longitudinal direction of the slide bracket. inserting the shaft, with fixed cam plate having a semi-circular arc hole in the lever pivot shaft end projecting inserted through the elongated hole, attaching the cam follower loosely fitted in the semicircular hole in the slide bracket outer surface, at least wherein by projecting the lever pivot shaft end left or right on one of the cam plate, wherein the extending parallel to the line connecting the ends of the semicircular arc hole, and levers to pivot about the eccentric position relative to the semicircular hole Affixing
The slide bracket is moved backward by a predetermined distance due to the displacement of the cam follower accompanying the rotation of the lever, the belt is loosened, and the belt tension is restored by returning the slide bracket to the original position by the reverse rotation of the lever. And belt conveyor .
前記スライドブラケットの先端には、水平方向先端側に開口して前記頭部又は尾部プーリどちらかの軸を支持する軸受が形成され、
前記レバー回動軸挿通位置より前記スライドブラケットの先端寄りの左右フレーム側板に長孔を設けることで、前記フレーム両側に設置される両スライドブラケットを接続するフレームツナギ材兼ガイドバーを挿通すると共に、前記フレーム側板と前記スライドブラケットとの間に、前記レバー回動軸通し孔及び前記フレームツナギ材兼ガイドバー挿通用長孔を有する樹脂製ガイドプレートを配置してフレーム側板に固着し、
さらに、前記スライドブラケット外面に前記半円弧孔に遊嵌するカムフォロアを前記フレームツナギ材兼ガイドバーの軸端に設けたことを特徴とする請求項1に記載のベルトコンベヤ
At the tip of the slide bracket, a bearing is formed that opens to the tip side in the horizontal direction and supports the shaft of either the head or tail pulley,
By providing elongated holes in the left and right frame side plates near the tip of the slide bracket from the lever rotation shaft insertion position, the frame joint material and guide bar connecting both slide brackets installed on both sides of the frame are inserted, the frame side plates and between said slide bracket, fixed to the frame side plate by placing the resin guide plate with the lever pivot shaft through hole and the frame ties and guide bar insertion long hole,
The belt conveyor according to claim 1, further comprising a cam follower that is loosely fitted in the semicircular arc hole on an outer surface of the slide bracket at a shaft end of the frame joint material and guide bar .
前記カム板に形成した半円弧孔は、レバーの回動端における力線と、前記半円弧孔の中心を含み、かつ半円弧孔両端とを結ぶ線とを一致させて、回動端でカムフォロアの変位に対するデッドポイントとなるよう180°の中心角を有している、ことを特徴とする請求項1に記載のベルトコンベヤ Semicircular arc hole formed in the cam plate, the force line at the pivot end of the lever includes a center of the semicircular arc hole, and by matching the line connecting the semicircular arc hole ends, the cam follower with the rotating end The belt conveyor according to claim 1, wherein the belt conveyor has a central angle of 180 ° to be a dead point with respect to the displacement of the belt.
JP2003424631A 2003-12-22 2003-12-22 Belt conveyor Expired - Fee Related JP4406557B2 (en)

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JP4538291B2 (en) * 2004-10-05 2010-09-08 株式会社ケイズベルテック belt conveyor
JP5009578B2 (en) * 2006-09-25 2012-08-22 重松工業株式会社 Sorting device
CN105173535B (en) * 2015-07-08 2017-07-14 杭州朝阳橡胶有限公司 A kind of upset conveyer belt apparatus of refining glue sizing material
CN107777249A (en) * 2017-10-25 2018-03-09 上海多科电子科技有限公司 Belt disassembling formula conveyer
JP7109913B2 (en) * 2017-12-20 2022-08-01 大和製衡株式会社 Conveyor and weighing device equipped with the same
KR102007822B1 (en) * 2017-12-29 2019-08-06 최현호 Apparatus for replacing a belt of a conveyor
KR101961200B1 (en) * 2018-11-15 2019-03-22 화동하이테크 주식회사 Flat belt conveyor with easy drum replacement
DE102020000460A1 (en) * 2020-01-24 2021-07-29 Mettler-Toledo Garvens Gmbh Device for the pivotable support of a deflection roller of a tape transport device and tape transport device with such a device
CN113879839B (en) * 2021-10-31 2024-01-02 东莞市盛德实业投资有限公司 Automatic feeding device of suction nozzle type truss manipulator for carrying paper boxes

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