JPH06293432A - Pallet positioning device for free flow conveyor - Google Patents

Pallet positioning device for free flow conveyor

Info

Publication number
JPH06293432A
JPH06293432A JP8165493A JP8165493A JPH06293432A JP H06293432 A JPH06293432 A JP H06293432A JP 8165493 A JP8165493 A JP 8165493A JP 8165493 A JP8165493 A JP 8165493A JP H06293432 A JPH06293432 A JP H06293432A
Authority
JP
Japan
Prior art keywords
pallet
cam
cylindrical cam
conveyor
predetermined position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8165493A
Other languages
Japanese (ja)
Inventor
Haruo Tanimura
治男 谷村
Shinichi Houjioka
慎一 法寺岡
Saburo Nakatsuka
三郎 中塚
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8165493A priority Critical patent/JPH06293432A/en
Publication of JPH06293432A publication Critical patent/JPH06293432A/en
Pending legal-status Critical Current

Links

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  • Special Conveying (AREA)
  • Control Of Conveyors (AREA)

Abstract

PURPOSE:To reduce the inertial force acting on a moving work without delaying the operating speed of a conveyor by horizontally providing a cylindrical cam long in the carrying direction of a pallet, straddling over a prescribed position and a waiting position, and protruding an engagement part to be engaged with the cam part of the cylindrical cam on the lower surface of each pallet. CONSTITUTION:A pallet 1 on which a work W is placed is moved together with a conveyor belt 2 by the frictional force worked with the conveyor belt 2, and when an external force for constraining the movement acts on the pallet 1, it overcomes the frictional force with the conveyor belt 2 to stop the pallet 1 in this position. A cylindrical cam 4 long in the carrying direction of the pallet 1 is horizontally provided below a guide rail 3, and a cam groove 41 to which a cam follower 12 is fitted is cut in the outer circumferential surface of the cylindrical cam 4. When the pallet 1 is moved from a waiting position to a prescribed position, it is moved by use of the cylindrical cam 4 under the pallet 1, and acceleration and deceleration are smoothly performed by the profile of the cam groove 14.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、コンベアに対して継脱
自在のパレットを備えたフリーフローコンベアに設けら
れ、パレットの位置決めを行なうパレット位置決め装置
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet positioning device for positioning a pallet, which is provided on a free flow conveyor provided with a pallet that can be detached from the conveyor.

【0002】[0002]

【従来の技術】複数の工程を経てワークを加工する場合
に、各工程にまたがってコンベアを敷設し、該コンベア
により搬送されるパレットにワークを載置してワークを
各工程毎に搬送するように構成されている。この場合、
複数のパレットを1つのコンベアで順次搬送しようとす
ると、各工程の間隔が一定でない場合には各パレットの
移動距離が一定でないため、パレットをコンベアに対し
て継脱自在に構成し、各工程位置までパレットが搬送さ
れると、その位置でコンベアに対するパレットの係合を
解き、パレットを停止させると共にその位置に位置決め
する、いわゆるフリーフローコンベアを用いなければな
らない。そして、このフリーフローコンベアで複数のパ
レットを搬送させるためには、パレットを各工程毎の所
定位置に停止させる位置決め手段と、この所定位置より
上流の待機位置で後続のパレットを一時停止させる仕切
り手段とを設ける必要がある。
2. Description of the Related Art When a work is processed through a plurality of steps, a conveyor is laid over each step, and the work is placed on a pallet conveyed by the conveyor so that the work is conveyed in each step. Is configured. in this case,
When trying to convey multiple pallets sequentially by one conveyor, if the intervals of each process are not constant, the moving distance of each pallet is not constant. When the pallet has been transported to, a so-called free-flow conveyor must be used, which disengages the pallet from the conveyor at that position and stops and positions it at that position. In order to convey a plurality of pallets on the free-flow conveyor, positioning means for stopping the pallets at a predetermined position for each process and partition means for temporarily stopping the subsequent pallets at a standby position upstream of the predetermined position. And must be provided.

【0003】[0003]

【発明が解決しようとする課題】上記所定位置での加工
等が終了すると待機位置で一時停止されているパレット
を所定位置まで移動させなければならないが、このとき
パレットに対する仕切り手段による拘束を解くと共に、
コンベアに対してパレットを連結させると、パレットは
急加速され、かつ十分な減速がされないままに所定位置
に到達して位置決め手段により該所定位置に急停止され
ることになる。従って、パレット上のワークには短時間
のうちに急加速と急停止とによる大きな慣性力が作用す
ることになり、パレットに対するワークの位置ずれや転
倒等のおそれがある。
When the machining or the like at the predetermined position is completed, the pallet temporarily stopped at the standby position has to be moved to the predetermined position. At this time, the restraint by the partitioning means on the pallet is released. ,
When the pallet is connected to the conveyor, the pallet is rapidly accelerated, reaches a predetermined position without being sufficiently decelerated, and is suddenly stopped at the predetermined position by the positioning means. Therefore, a large inertial force is applied to the work on the pallet due to the sudden acceleration and the sudden stop within a short time, and there is a possibility that the work is displaced from the pallet or falls.

【0004】尚、このような場合にコンベアの作動速度
を遅くすれば上記問題は生じないものの、パレットの搬
送速度が低下し、ワークの加工効率が低下するためコン
ベアの作動速度を遅くすることはできない。
In such a case, if the operating speed of the conveyor is slowed down, the above problem does not occur, but the conveying speed of the pallet is lowered and the working efficiency of the work is lowered, so that the operating speed of the conveyor is not slowed down. Can not.

【0005】そこで本発明は、上記の問題点に鑑み、コ
ンベアの作動速度を遅くすることなく、待機位置から所
定位置に移動するワークに作用する慣性力を低減するこ
とのできるパレット位置決め装置を提供することを目的
とする。
In view of the above problems, the present invention provides a pallet positioning device capable of reducing the inertial force acting on a work moving from a standby position to a predetermined position without slowing down the operating speed of the conveyor. The purpose is to do.

【0006】[0006]

【課題を解決するための手段】上記目的を達成するため
に本発明は、コンベアに対して継脱自在のパレットを備
えたフリーフローコンベアに設けられ、パレットを所定
位置に停止させて位置決めする位置決め手段と、該位置
決め手段より上流側の待機位置でパレットを一時停止さ
せる仕切り手段とを備えたパレット位置決め装置におい
て、上記所定位置と待機位置とにまたがってパレットの
搬送方向に長手の円筒カムを横設すると共に、各パレッ
トの下面に該円筒カムのカム部に係合する係合部を突設
し、該円筒カムの回動に連動して上記パレットを待機位
置から所定位置へと移動させるようにしたことを特徴と
する。
In order to achieve the above object, the present invention is provided in a free-flow conveyor provided with a pallet that can be detached from the conveyor, and is positioned to stop and position the pallet at a predetermined position. In a pallet positioning device having a means and a partitioning means for temporarily stopping the pallet at a standby position upstream of the positioning means, a cylindrical cam that is long in the pallet conveying direction extends across the predetermined position and the standby position. At the same time, the engaging portion that engages with the cam portion of the cylindrical cam is projected on the lower surface of each pallet, and the pallet is moved from the standby position to the predetermined position in conjunction with the rotation of the cylindrical cam. It is characterized by having done.

【0007】[0007]

【作用】パレットを待機位置から所定位置まで移動させ
る際に、パレットをコンベアに連結させコンベアにより
移動させるのではなく、上記円筒カムを用いてパレット
を移動させる。円筒カムによればパレットの加速時及び
減速時に作用する慣性力を分散させその極大値を低減さ
せることができ、従って、待機位置から所定位置までの
平均移動速度を低下させることなくワークを確実に移動
させることができる。
When the pallet is moved from the standby position to the predetermined position, the pallet is moved by using the cylindrical cam instead of connecting the pallet to the conveyor and moving it by the conveyor. With the cylindrical cam, it is possible to disperse the inertial force that acts during acceleration and deceleration of the pallet and reduce its maximum value.Therefore, the work can be reliably performed without reducing the average moving speed from the standby position to the predetermined position. It can be moved.

【0008】[0008]

【実施例】以下、図面に従って本発明の実施例を説明す
る。
Embodiments of the present invention will be described below with reference to the drawings.

【0009】図中、1はパレットであり、ワークWが載
置されている。そして、該パレット1の下面には前後1
対のガイドローラ11が垂直軸線回りに回動自在に取り
付けられ、更に前方に位置するガイドローラ11の下方
には同一軸線上に位置してカムフォロア12が同じく回
動自在に取り付けられている。そして、該パレット1は
左右1対のコンベアベルト2上に載置されている。該パ
レット1はコンベアベルト2との間に作用する摩擦力に
よって該コンベアベルト2に対して連結され、コンベア
ベルト2と共に移動するが、パレット1に対してその移
動を拘束すべき外力が作用すると、コンベアベルト2と
の間の摩擦力に打ち勝ってパレット1はその位置で停止
されるように構成されている。また、該コンベアベルト
2の間には同じく左右1対の樹脂製のガイドレール3
が、上記ガイドローラ11を挟んで対峙しており、ガイ
ドローラ11を介してパレット1の横方向の位置決めを
行なっている。該ガイドレール3の下方にはパレット1
の搬送方向に長手の樹脂製の円筒カム4が横設され、該
円筒カム4の外周面には上記カムフォロア12が嵌挿さ
れるカム溝41が刻設されている。該円筒カム4はその
前後端を軸受部材42により回動自在に支持され、後端
にはタイミングプーリ43が取り付けられている。そし
て、該タイミングプーリ43は、サーボモータ5に取り
付けられ、タイミングプーリ43より2倍の歯数のタイ
ミングプーリ51に対してタイミングベルト52を介し
て連結されている。従って、サーボモータ5が半回転す
れば円筒カム4が1回転することになる。
In the figure, reference numeral 1 is a pallet on which a work W is placed. The front and back of the pallet 1 has a front surface 1
A pair of guide rollers 11 is rotatably attached around a vertical axis, and a cam follower 12 is also rotatably attached on the same axis below the guide roller 11 located in front. The pallet 1 is placed on a pair of left and right conveyor belts 2. The pallet 1 is connected to the conveyor belt 2 by a frictional force acting between the pallet 1 and the conveyor belt 2 and moves with the conveyor belt 2. However, when an external force for restraining the movement acts on the pallet 1, The pallet 1 is configured to stop at that position by overcoming the frictional force with the conveyor belt 2. A pair of left and right resin-made guide rails 3 are also provided between the conveyor belts 2.
Are opposed to each other with the guide roller 11 interposed therebetween, and the pallet 1 is laterally positioned via the guide roller 11. Below the guide rail 3 is a pallet 1.
A resin-made cylindrical cam 4 which is long in the carrying direction is horizontally provided, and a cam groove 41 into which the cam follower 12 is fitted is formed on the outer peripheral surface of the cylindrical cam 4. The front and rear ends of the cylindrical cam 4 are rotatably supported by bearing members 42, and a timing pulley 43 is attached to the rear end. The timing pulley 43 is attached to the servo motor 5 and is connected to the timing pulley 51 having twice the number of teeth as the timing pulley 43 via the timing belt 52. Therefore, if the servomotor 5 makes a half rotation, the cylindrical cam 4 makes one rotation.

【0010】ところで、該円筒カム4のカム溝41のプ
ロフィールは図3に示すもので、まず、円筒カム4の回
転位相が0°の状態でパレット1が搬送されてくると、
カムフォロア12はカム溝41の仕切り部4aに当接し
て待機位置であるその位置で停止する。次に、円筒カム
4が回転するとカムフォロア12は加速部4bに押され
てパレット1を徐々に加速させながら移動させる。そし
て、パレット1が所定位置との間の略中間位置まで移動
すると、カムフォロア12は減速部4cにより滑らかに
減速され、最後に位置決め部4dに当接して大きな慣性
力が作用することなくパレット1は所定位置で停止され
る。この状態では、カムフォロア12の進行方向の位置
は位置決め部4dにより規制されるので、パレット1は
その位置、すなわち所定位置で位置決めされることにな
る。ところで、この位置決め部4dは図示のごとく範囲
Aにわたって形成されているので、円筒カム4の停止位
相が正確に0°に戻されなくてもカムフォロア12がこ
の範囲A内に位置すればパレット1は位置決め部4dに
より正確に所定位置に停止され位置決めされる。尚、こ
のように円筒カム4が1回転されるまでに後続のパレッ
トが進んできた場合には、その後続のパレットに取り付
けられたカムフォロアが円筒カム4の後端壁4fに当接
してその場で一時停止され、円筒カム4が1回転した時
点で仕切り部4aまで進んで次に円筒カム4が回転され
るのを待つ。また、位置決め部4dにより位置決めされ
たパレット1は、円筒カム4の次の回転時に押し出し部
4eによりカムフォロア12が押されることにより搬送
方向への加速が行なわれる。
By the way, the profile of the cam groove 41 of the cylindrical cam 4 is shown in FIG. 3, and first, when the pallet 1 is conveyed with the rotational phase of the cylindrical cam 4 being 0 °,
The cam follower 12 comes into contact with the partition portion 4a of the cam groove 41 and stops at the standby position. Next, when the cylindrical cam 4 rotates, the cam follower 12 is pushed by the accelerating portion 4b to move the pallet 1 while gradually accelerating it. Then, when the pallet 1 moves to a substantially intermediate position between the pallet 1 and the predetermined position, the cam follower 12 is smoothly decelerated by the speed reducing portion 4c, and finally contacts the positioning portion 4d, so that the pallet 1 is not moved by a large inertial force. It is stopped at a predetermined position. In this state, since the position of the cam follower 12 in the traveling direction is regulated by the positioning portion 4d, the pallet 1 is positioned at that position, that is, a predetermined position. By the way, since the positioning portion 4d is formed over the range A as shown in the figure, even if the stop phase of the cylindrical cam 4 is not accurately returned to 0 °, if the cam follower 12 is positioned within this range A, the pallet 1 will not move. The positioning portion 4d accurately stops and positions at a predetermined position. When the subsequent pallet has advanced by the time the cylindrical cam 4 has made one revolution, the cam follower attached to the subsequent pallet comes into contact with the rear end wall 4f of the cylindrical cam 4 and moves in that position. Then, when the cylindrical cam 4 makes one rotation, it advances to the partition 4a and waits for the next cylindrical cam 4 to rotate. The pallet 1 positioned by the positioning portion 4d is accelerated in the carrying direction by the pushing portion 4e pushing the cam follower 12 when the cylindrical cam 4 is rotated next time.

【0011】ところで、上記実施例ではガイドレール3
及び円筒カム4を樹脂製とし騒音防止を図ったが、耐久
性を優先させる場合には金属製としてもよい。また、上
記実施例ではガイドローラ11をガイドレール3で挟む
ように構成したが、ガイドローラを更に1対追加し、ガ
イドローラでガイドレールを挟むようにしパレットの左
右方向の安定性を増すようにしてもよい。
By the way, in the above embodiment, the guide rail 3 is used.
Although the cylindrical cam 4 is made of resin to prevent noise, it may be made of metal when priority is given to durability. Although the guide roller 11 is sandwiched between the guide rails 3 in the above-described embodiment, one pair of guide rollers is further added so that the guide rails are sandwiched by the guide rollers to increase the lateral stability of the pallet. May be.

【0012】[0012]

【発明の効果】パレットを円筒カムを用いて待機位置か
ら所定位置まで移動させるようにしたのでパレットの急
加速や急減速が防止され、パレットに載置されたワーク
がずれたり転倒する心配がない。
Since the pallet is moved from the standby position to the predetermined position by using the cylindrical cam, sudden acceleration or deceleration of the pallet is prevented, and there is no risk of the work placed on the pallet being displaced or falling. .

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の一実施例の構成を示す図FIG. 1 is a diagram showing a configuration of an embodiment of the present invention.

【図2】図1のII−II断面図FIG. 2 is a sectional view taken along line II-II of FIG.

【図3】カム溝の形状を示す展開図FIG. 3 is a development view showing the shape of a cam groove.

【符号の説明】[Explanation of symbols]

1 パレット 2 コンベアベルト 3 ガイドレール 4 円筒カム 5 サーボモータ 11 ガイドローラ 12 カムフォロア 41 カム溝 1 Pallet 2 Conveyor Belt 3 Guide Rail 4 Cylindrical Cam 5 Servo Motor 11 Guide Roller 12 Cam Follower 41 Cam Groove

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 コンベアに対して継脱自在のパレットを
備えたフリーフローコンベアに設けられ、パレットを所
定位置に停止させて位置決めする位置決め手段と、該位
置決め手段より上流側の待機位置でパレットを一時停止
させる仕切り手段とを備えたパレット位置決め装置にお
いて、上記所定位置と待機位置とにまたがってパレット
の搬送方向に長手の円筒カムを横設すると共に、各パレ
ットの下面に該円筒カムのカム部に係合する係合部を突
設し、該円筒カムの回動に連動して上記パレットを待機
位置から所定位置へと移動させるようにしたことを特徴
とするフリーフローコンベアのパレット位置決め装置。
1. A positioning means provided on a free-flow conveyor having a pallet that can be connected to and detached from the conveyor, and positioning means for stopping and positioning the pallet at a predetermined position, and a pallet at a standby position upstream of the positioning means. In a pallet positioning device provided with a partitioning means for temporarily stopping, a longitudinal cylindrical cam is provided horizontally in the conveying direction of the pallet straddling the predetermined position and the standby position, and the cam portion of the cylindrical cam is provided on the lower surface of each pallet. A pallet positioning device for a free flow conveyor, characterized in that an engaging portion that engages with is projected so as to move the pallet from a standby position to a predetermined position in conjunction with the rotation of the cylindrical cam.
JP8165493A 1993-04-08 1993-04-08 Pallet positioning device for free flow conveyor Pending JPH06293432A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8165493A JPH06293432A (en) 1993-04-08 1993-04-08 Pallet positioning device for free flow conveyor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8165493A JPH06293432A (en) 1993-04-08 1993-04-08 Pallet positioning device for free flow conveyor

Publications (1)

Publication Number Publication Date
JPH06293432A true JPH06293432A (en) 1994-10-21

Family

ID=13752323

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8165493A Pending JPH06293432A (en) 1993-04-08 1993-04-08 Pallet positioning device for free flow conveyor

Country Status (1)

Country Link
JP (1) JPH06293432A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102285526A (en) * 2010-06-21 2011-12-21 徐州惠科自动化工程有限公司 Adhesive tape clamping braking device with swingable splint
WO2020030294A1 (en) * 2018-08-08 2020-02-13 Global Systems Solutions GmbH Transport system for transporting and/or positioning objects along a transport route, and transport body for such a transport system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102285526A (en) * 2010-06-21 2011-12-21 徐州惠科自动化工程有限公司 Adhesive tape clamping braking device with swingable splint
WO2020030294A1 (en) * 2018-08-08 2020-02-13 Global Systems Solutions GmbH Transport system for transporting and/or positioning objects along a transport route, and transport body for such a transport system
CN112566856A (en) * 2018-08-08 2021-03-26 全球***方案有限责任公司 Conveying system for conveying and/or positioning objects along a conveying path, and conveying body for such a conveying system
US11208268B2 (en) 2018-08-08 2021-12-28 Global Systems Solutions GmbH Transport system for transporting and/or positioning objects along a transport route, and transport body for such a transport system
CN112566856B (en) * 2018-08-08 2023-03-31 全球***方案有限责任公司 Conveying system for conveying and/or positioning objects along a conveying path, and conveying body for such a conveying system

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