JPH0243179A - Zigzag folding device - Google Patents

Zigzag folding device

Info

Publication number
JPH0243179A
JPH0243179A JP19082688A JP19082688A JPH0243179A JP H0243179 A JPH0243179 A JP H0243179A JP 19082688 A JP19082688 A JP 19082688A JP 19082688 A JP19082688 A JP 19082688A JP H0243179 A JPH0243179 A JP H0243179A
Authority
JP
Japan
Prior art keywords
roller
workpiece
push
claw
rollers
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.)
Granted
Application number
JP19082688A
Other languages
Japanese (ja)
Other versions
JP2673557B2 (en
Inventor
Torakichi Nagai
永井 虎吉
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.)
Orion Machinery Co Ltd Tokyo
Original Assignee
Orion Machinery Co Ltd Tokyo
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 Orion Machinery Co Ltd Tokyo filed Critical Orion Machinery Co Ltd Tokyo
Priority to JP63190826A priority Critical patent/JP2673557B2/en
Publication of JPH0243179A publication Critical patent/JPH0243179A/en
Application granted granted Critical
Publication of JP2673557B2 publication Critical patent/JP2673557B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Abstract

PURPOSE:To get rid of any damage to a push-in pallet and any flaw to a workpiece in making excessive bending force so as not to be imposed on the push-in pallet by paralleling the push-in pallet being inserted into a holding jaw with a straight line passing through each rotational center of two rollers, when the push-in pallet is pulled out. CONSTITUTION:A workpiece is continuously feeding to space between two rollers 1, 1' continuously rotating, and at a spot where a push-in pallet 2 of a roller one one side comes nearer to a holding claw 3 of a roller on the other, this push-in pallet 2 is projected out, having it held by the holding claw 3 of the other side roller so as to put a fold on the workpiece. In addition, at a spot where both rollers are rotated as far as the specified angle, only the push-in pallet 2 is pulled out of the holding claw 3 in leaving the workpiece left behind. At this time, since the push-in pallet 2 is paralleled with a straight line passing through each rotational center of both these rollers, it is smoothly pulled out without receiving large bending force from the holding claw 3. In this state, at a spot where these rollers are further rotated as far as the specified angle, holding of the workpiece by the holding claw 3 is released, thus folding is completed.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、一対のローラの連続的な回転によって帯状の
被加工物を交互に折り畳んでいくジグザグ折り畳み装置
に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a zigzag folding device that alternately folds a strip-shaped workpiece by continuous rotation of a pair of rollers.

(従来の技術) 一般に、携帯用のテッシュベーバーの製造工程において
は、被加工物である帯状の紙材を幅方向に適宜折り畳ん
だ後に長子方向でジグザグに折り畳み、その折り畳んだ
ものを中央から切断して所定量ずつ包装するようにして
いる。このような工程途中で帯状の被加工物を長子方向
で折り畳む場合には、従来、第8図に示すようなジグザ
グ折り畳み装置が使用されている。
(Prior art) Generally, in the manufacturing process of portable tissue paper, a strip-shaped paper material to be processed is appropriately folded in the width direction, and then folded in a zigzag pattern in the longitudinal direction. It is cut and packaged in predetermined amounts. When folding a strip-shaped workpiece in the longitudinal direction during such a process, a zigzag folding device as shown in FIG. 8 has conventionally been used.

このジグザグ折り畳み装置は、一対のローラ1.1゛が
平行に設置され、この各ローラt(io)の周状の対角
位置に押込み爪2と把持爪3が装着されている。押込み
爪2と把持爪3は図示しないカム機構に連係され、各ロ
ーラ1(1’)の回転に合わせた適宜タイミングと作動
するようになっている。被加工物4を折り畳む場合には
、両ローラ1,1′間に被加工物4を供給し、ローラl
とローラl′を相反する方向に回転させる(第8図中(
イ)参照)、そしてローラl。
In this zigzag folding device, a pair of rollers 1.1'' are installed in parallel, and a pushing claw 2 and a gripping claw 3 are mounted at diagonal positions on the circumference of each roller t(io). The pushing claws 2 and the gripping claws 3 are linked to a cam mechanism (not shown), and are operated at appropriate timings in accordance with the rotation of each roller 1 (1'). When folding the workpiece 4, the workpiece 4 is supplied between both rollers 1 and 1', and the workpiece 4 is folded between the rollers 1 and 1'.
and roller l' in opposite directions (see Fig. 8).
b), and Laura l.

loが所定角度回転したところで一方のローラlの押込
み爪2を突出させ、被加工物4を他方のローラ1°の把
持部爪3に折目を付けるように押込み、把持爪3はここ
で被加工物4を押込み爪2と共に把持する(同図中(I
])参照)、ローラlとローラl′がさらに回転すると
、そこで押込み爪2を引き戻し、把持爪3に被加工物4
たけを把持させる(同図中(ハ)参照)。この状態から
ローラ1,1′が約90°回転したところで把持爪3に
よる被加工物4の把持を解除し、被加工物4を一方側に
折り畳む(同図中(ニ)参照)、モしてローラ1.l’
の回転がさらに進むと、逆に一方のローラ1の把持爪3
が同様にして被加工物4を把持し、その把持爪3が被加
工物4の把持を解除したところで被加工物4を他方側に
折り畳む、以下、ローラ1.1°の連続的な回転によっ
て被加工物4を交互に折り畳んでいく。
When lo has rotated by a predetermined angle, the pushing pawl 2 of one roller l is projected, and the workpiece 4 is pushed into the gripping pawl 3 of the other roller 1° so as to create a crease. Grip the workpiece 4 together with the push-in claw 2 ((I) in the same figure).
]), when the rollers l and l' further rotate, the push-in claw 2 is pulled back and the workpiece 4 is attached to the gripping claw 3.
Have them grasp the bamboo shoots (see (c) in the same figure). When the rollers 1 and 1' have rotated approximately 90 degrees from this state, the grasping of the workpiece 4 by the gripping claws 3 is released, and the workpiece 4 is folded to one side (see (d) in the figure). Roller 1. l'
As the rotation progresses further, the gripping claws 3 of one of the rollers 1
grips the workpiece 4 in the same way, and when the gripping claws 3 release the grip on the workpiece 4, the workpiece 4 is folded to the other side.Hereinafter, by continuous rotation of the roller 1.1° The workpieces 4 are folded alternately.

(発明が解決しようとする課題) しかしながら、上述した従来のジグザグ折り畳み装置あ
っては、第9図に示すように押込み爪2が把持爪3から
引き抜かれるときに、押込み爪2の突出姿勢と把持爪3
の把持姿勢がローラl。
(Problems to be Solved by the Invention) However, in the conventional zigzag folding device described above, when the pushing claw 2 is pulled out from the gripping claw 3 as shown in FIG. Claw 3
The gripping posture is roller l.

l゛の回転中心o、0゛を通る直線と角度θ(θ>0)
を成すため、押込み爪2に曲げ方向の無理な力がかかり
、押込み爪2の破損や被加工物4の傷つきを生じ易いと
いう問題があった。さらに、この押込み爪2の曲げによ
り、押込み爪が引き抜かれる瞬間に把持爪3から被加工
物4か同時にこじり出され、被加工物4の折り畳み不良
を生じ易くなるという問題もあった。
The rotation center o of l゛, the straight line passing through 0゛ and the angle θ (θ>0)
Therefore, there is a problem in that an unreasonable force is applied to the push-in claw 2 in the bending direction, and the push-in claw 2 is easily damaged and the workpiece 4 is easily damaged. Furthermore, due to the bending of the push-in claw 2, the workpiece 4 is simultaneously pried out from the gripping claws 3 at the moment the push-in claw is pulled out, making it easy to fold the workpiece 4 incorrectly.

これらの傾向は、一般にローラ1.l’の回転速度に比
例して増大するため、装置全体の作動速度はこれらによ
り大幅に制限されていた。
These trends generally apply to rollers 1. Since the rotational speed of l' increases in proportion to the rotational speed of l', the operating speed of the entire device is greatly limited by these.

本発明の目的は、押込み爪を引き戻すときに把持爪に把
持された被加工物を押込み爪かこじらないようにして製
品の品質維持と生産効率の向上を同時に可能にするジグ
ザグ折り畳み装置を提供せんとするものである。
An object of the present invention is to provide a zigzag folding device that can maintain product quality and improve production efficiency at the same time by preventing the workpiece gripped by the gripping claws from being pried by the pushing claws when the pushing claws are pulled back. That is.

(課題を解決するための手段) 本発明は、上述した課題を解決するための手段として、
相反対方向に回転する一対のローラに押込み爪と把握爪
を各々装着し、前記一方のローラの押込み爪で他方のロ
ーラの把握爪に被加工物を押込んで折目を形成し次いで
押込み爪を引き抜いて帯状の被加工物を把握させるジグ
ザグ折り畳み装置において、前記押込み爪の引き抜きの
ときに前記把握爪に差込まれている押込み爪が、前記−
対のローラの回転中心を通る直線と平行を成すように押
込み爪と把握爪を各ローラに配置するようにしたもので
ある。
(Means for Solving the Problems) The present invention provides, as means for solving the above-mentioned problems,
A pushing pawl and a grasping pawl are respectively attached to a pair of rollers rotating in opposite directions, and the pressing pawl of one roller pushes the workpiece into the grasping pawl of the other roller to form a crease, and then the pressing pawl is pressed. In a zigzag folding device that grasps a strip-shaped workpiece by pulling it out, the push-in claw inserted into the grasping claw when the push-in claw is pulled out is inserted into the grasping claw.
A pushing pawl and a grasping pawl are arranged on each roller so as to be parallel to a straight line passing through the rotation centers of the pair of rollers.

(作用) このように構成したことにより1次のようにして被加工
物を折り畳むことが出来るようになる。
(Function) With this configuration, the workpiece can be folded in a first-order manner.

回転を続ける両ローラの間に被加工物を連続的に供給し
てゆき、一方のローラの押込み爪と他方のローラの把持
爪が接近したところで押込み爪を突出させ、被加工物を
折目を付けるようにして他方のローラの把持爪に把持さ
せる。さらに両ローラが所定角度回転したところで被加
工物を残して把持爪から押込み爪のみを引き抜く、この
とき押込み爪は両ローラの回転中心を通る直線と平行を
成しているため、把持爪から大きな曲げ方向の力を受け
ることなく引き抜かれる。この状態で両ローラかさらに
所定角度回転したところで把持爪による被加工物の把持
を解除し、被加工物の一方側の折り畳みを完了する。そ
してこの折り畳みを両ローラで交互に繰り返していく。
The workpiece is continuously fed between the two rotating rollers, and when the push-in claw of one roller and the gripping claw of the other roller come close, the push-in claw is projected, and the workpiece is folded. the gripping claws of the other roller. Furthermore, when both rollers have rotated a predetermined angle, only the push-in claw is pulled out from the gripping claw, leaving the workpiece behind. At this time, the push-in claw is parallel to the straight line passing through the center of rotation of both rollers, so the large It can be pulled out without receiving any force in the bending direction. In this state, when both rollers further rotate by a predetermined angle, the grasping of the workpiece by the gripping claws is released, and folding of one side of the workpiece is completed. This folding process is then repeated alternately using both rollers.

(実施例) 以下、本発明の一実施例を第1図ないし第7図に基づい
て詳細に説明する。尚、第8図および第9図で示した従
来の技術と同一部分には同一符合を用いて説明するもの
とする。
(Example) Hereinafter, an example of the present invention will be described in detail based on FIGS. 1 to 7. Note that the same parts as those of the conventional technology shown in FIGS. 8 and 9 will be described using the same reference numerals.

本発明にかかるジグザグ折畳袋M5は、第2図に示すよ
うにボビン6から繰り出された帯状の被加工物4を案内
するための一対のガイドローラ7と、ジグザグに折畳ま
れた被加工物4を切断するためのカッタ8の間に配置さ
れている。ジグザグ折畳装置5の前工程においては、ガ
イドローラ7まで繰り出される間に被加工物4を幅方向
に適宜折畳み1幅方向に折畳んだものをガイドローラ7
からジグザグ折畳装置5に連続的に供給するようになっ
ている。そしてジグザグ折畳装置5の後工程においては
、長手方向でジグザグに折畳んだ被加工物4を順次重ね
合せてゆき、重ね合せたものをカッタ8で中央部から切
断して同図中矢印Aで示すように所定量ずつ次の包装工
程に送り出すようになっている。
As shown in FIG. 2, the zigzag folding bag M5 according to the present invention includes a pair of guide rollers 7 for guiding a strip-shaped workpiece 4 fed out from a bobbin 6, and a zigzag-folded workpiece. It is arranged between cutters 8 for cutting the object 4. In the pre-process of the zigzag folding device 5, the workpiece 4 is appropriately folded in the width direction while being fed out to the guide roller 7.
The zigzag folding device 5 is continuously supplied with the zigzag folding device 5. In the post-process of the zigzag folding device 5, the workpieces 4 folded in a zigzag manner in the longitudinal direction are successively stacked one on top of the other, and the stacked pieces are cut from the center with a cutter 8 at the arrow mark in the figure. As shown in the figure, a predetermined amount is sent to the next packaging process.

第3図において、ジグザグ折畳装置5はローラlを支持
するシャフト9とローラl′を支持するシャフト9′が
フレームlOに回転自在に支持されている。一方のシャ
フト9の下端部にはモータ11の軸か連結され、両シャ
フト9.9゛の上端部は同期ギヤ12を介して連係され
ている。したがって、モータ11か作動した場合、ロー
ラlとローラ1′は相反対方向に同期回転を行なう、ロ
ーラ1とローラl゛には各々押込み爪2と把持爪3か対
を成して装備されており、各押込み爪2はローラ1,1
′の下方側のカム機構12を介して作動し、各把持爪3
はローラ1.l’の上方側のカム機構13を介して作動
するようになっている。
In FIG. 3, in the zigzag folding device 5, a shaft 9 supporting a roller l and a shaft 9' supporting a roller l' are rotatably supported by a frame lO. The shaft of a motor 11 is connected to the lower end of one shaft 9, and the upper ends of both shafts 9.9' are linked via a synchronizing gear 12. Therefore, when the motor 11 is activated, the roller 1 and the roller 1' perform synchronous rotation in opposite directions. , and each push-in pawl 2 is connected to rollers 1 and 1.
' is operated via the cam mechanism 12 on the lower side of each gripping claw 3.
is roller 1. It operates via a cam mechanism 13 on the upper side of l'.

ローラ1,1’部分の具体的な構成は次に示すようにな
っている。尚、第4図はローラ1°を示すものであるか
、ローラ1はローラl′と同じ構成を軸対称に配置した
ものであるため、ローラlの図示に換えるものとする。
The specific structure of the rollers 1 and 1' is as follows. It should be noted that FIG. 4 shows the roller 1°, or since the roller 1 has the same structure as the roller l' and is arranged axially symmetrically, the illustration of the roller l will be used instead.

第4図において、ローラ1’(1)には爪操作用のシャ
フト14および15を挿入するための孔16および17
が軸方向に沿って設けられている。シャフト14の側面
には押え部材18が係止され、この押え部材18には薄
板状の押込み爪2が一体に固定されている。ここで、押
え部材18は螺子19を介してシャフト14に係止され
ているが、押え部材18の孔(符合は省略する)は、螺
子19が挿入された際に押え部材18の傾動が可能なよ
うに明けられている。この状態において、シャフト14
はローラ1’(1)の孔16に挿入され、これに係止さ
れた押込み爪2の先端は、孔16からローラ1’(1)
の周面に貫通するスリット20に摺動自在に挿入されて
いる。そして、シャフト14はその両端部か各々軸受部
材21および22を介してローラ1’(1)の上下面に
支持されている。これにより、シャフト14が左右方向
に僅かに回転すると、押込み爪はスリット20から出没
する。また、シャフト15の側面には把持爪3か一体に
固定されており、一方、これに対応するローラ1 ’(
1)の孔17はローラ1’(1)の周面に設定間隔で開
口している。そしてシャフト15が孔17に挿入された
際には、この開口部分に把持爪3の先端が位置され、一
方の開口端23と把持爪3の先端で被加工物4の把持が
行われるようになっている。孔17に挿入されたシャフ
ト14の両端部は各々軸受部材24.25を介してロー
ラ1’(1)の上下面に支持されている。これにより、
シャフト15か左右方向に僅かに回転すると、把持爪3
は孔17の開口端23に対して開閉動作を行う、さらに
、軸受部材22と軸受部材24からは各々シャフト14
とシャフト15の端部が突出しており、この突出した各
端部にアーム26が固定されている。このアーム26の
中央部にはガイドローラ27か回動自在に装着され、こ
れらのアーム26の先端部と軸受部材21および軸受部
材25との間には圧縮スプリング28が介装されている
。したがって、アーム26に装着されたガイドローラ2
7は圧縮スプリング28によって常時軸心方向に付勢さ
れている。
In FIG. 4, roller 1' (1) has holes 16 and 17 for inserting shafts 14 and 15 for pawl operation.
are provided along the axial direction. A presser member 18 is engaged with the side surface of the shaft 14, and a thin plate-shaped push-in claw 2 is integrally fixed to the presser member 18. Here, the presser member 18 is locked to the shaft 14 via a screw 19, and the hole (numbers are omitted) in the presser member 18 allows the presser member 18 to tilt when the screw 19 is inserted. It's dawning like this. In this state, the shaft 14
is inserted into the hole 16 of the roller 1' (1), and the tip of the push-in pawl 2 locked therein is inserted into the hole 16 of the roller 1' (1).
It is slidably inserted into a slit 20 penetrating the circumferential surface of. Both ends of the shaft 14 are supported by the upper and lower surfaces of the roller 1' (1) via bearing members 21 and 22, respectively. As a result, when the shaft 14 rotates slightly in the left-right direction, the push-in claws move in and out of the slits 20. Further, a gripping claw 3 is integrally fixed to the side surface of the shaft 15, and a corresponding roller 1' (
The holes 17 (1) are opened at set intervals on the circumferential surface of the roller 1' (1). When the shaft 15 is inserted into the hole 17, the tip of the gripping claw 3 is positioned in this opening, and the workpiece 4 is gripped by the one open end 23 and the tip of the gripping claw 3. It has become. Both ends of the shaft 14 inserted into the hole 17 are supported by the upper and lower surfaces of the roller 1' (1) via bearing members 24 and 25, respectively. This results in
When the shaft 15 rotates slightly in the left and right direction, the gripping claw 3
performs an opening/closing operation with respect to the open end 23 of the hole 17, and furthermore, the shaft 14 is connected to the shaft 14 from the bearing member 22 and the bearing member 24, respectively.
The ends of the shaft 15 protrude, and an arm 26 is fixed to each of the protruding ends. A guide roller 27 is rotatably attached to the center of the arm 26, and a compression spring 28 is interposed between the tip of the arm 26 and the bearing members 21 and 25. Therefore, the guide roller 2 mounted on the arm 26
7 is constantly urged in the axial direction by a compression spring 28.

第1図において、シャフト14. Isに取付けられた
ローラlとローラl°は、一方何の押込み爪3が回転中
心0.0′を通る直線P上で最接近するようになってい
る。そしてローラ1.l°上における押込み爪2と把持
爪3の配置は、ローラl、1′の回転により押込み爪2
と把持爪3が最接近してから所定距離d移動したところ
で、押込み爪2の突出姿勢と、把持爪3と開口端23に
よる把持姿勢が直線Pと平行を成すようになつている。
In FIG. 1, shaft 14. The roller l and the roller l° attached to Is are arranged so that the pushing pawl 3 of which one comes closest on a straight line P passing through the center of rotation 0.0'. And roller 1. The arrangement of the push-in claw 2 and the gripping claw 3 on l° is determined by the rotation of the rollers l and 1'.
When the gripping claws 3 have moved a predetermined distance d after they come closest to each other, the protruding posture of the pushing claws 2 and the gripping postures of the gripping claws 3 and the open end 23 are parallel to the straight line P.

このdの値は、押込み爪2と把持爪3が最接近してから
距離dだけ移動したところで、押込み爪2の引き抜き動
作が開始されるように設定されている。
The value of d is set such that the pulling operation of the push-in claw 2 is started when the push-in claw 2 and the grip claw 3 have moved a distance d after they have come closest to each other.

また、第3図に示すように、フレームlOのローラ1,
1’の各上面に臨まされる部位にはカム29が固定され
、ローラ1.l’の各下面に臨まされる部位にはカム3
0か固定されている。これらカム29、30にはシャフ
ト9,9′が貫通され、カム29、 :lOの外周部に
は縮圧スプリング28によって付勢されたガイドローラ
27が常時接触するようになっている。押込み爪2を作
動させるカム機構12は、カム30.ガイトローラ27
.圧縮スプリング28およびシャフト14から構成され
、把持爪3を作動させるカム機構13は、カム29.ガ
イドローラ27゜圧縮スプリング28およびシャフト1
5から構成されている。
Further, as shown in FIG. 3, the rollers 1 and 1 of the frame IO
A cam 29 is fixed to a portion facing the upper surface of each roller 1'. A cam 3 is installed at the part facing each lower surface of l'.
It is fixed at 0. Shafts 9, 9' pass through these cams 29, 30, and a guide roller 27 biased by a compression spring 28 is in constant contact with the outer periphery of the cams 29, 30. The cam mechanism 12 that operates the push-in claw 2 includes a cam 30. guide roller 27
.. The cam mechanism 13, which is composed of a compression spring 28 and a shaft 14 and which operates the gripping claws 3, has a cam 29. Guide roller 27° compression spring 28 and shaft 1
It consists of 5.

カムコ0の形状および配置は、第5図に示すようになっ
ており、このカム30に接触するガイトローラ27はカ
ム30の径の大きい部分Bで外径方向に移動し、カム3
0の径の小さい部分B゛で内側方向に移動するようにな
っている。したがって、このカム機構12は、カム30
の径の大きい部分Bにおいてシャフト14が矢印す方向
に回転して押込み爪2を引き戻し、カム30の径の小さ
い部分B′においてシャフト14が矢印b°力方向回転
して押込み爪2を突出させるようになっている。また、
カム29の形状および配置は、第6図に示すようになっ
ている。このカム機構13は、上述したカム機構12の
場合と同様に、カム29の径の大きい部分Cにおいてシ
ャフト15が矢印C方向に回転して把持爪3を開き、カ
ム29の径の小さい部分C”においてシャフト15が矢
印C°力方向回転して把持爪3を閉じるようになってい
る。そしてローラ1.loの回転に対する押込み爪2と
把持爪3の作動タイミングは、一方何の押込み爪2と他
方側の把持爪3が直線P上で最接近する直前で押込み爪
2と把持爪3が各々突出と把持動作を行い、直線Pを通
過した直後に押込み爪2が引き戻され、そこからローラ
1,1′が約90°回転したところで把持爪3か開放動
作を行うようになっている。
The shape and arrangement of the camco 0 are as shown in FIG.
It is designed to move inward at the smaller diameter portion B' of 0. Therefore, this cam mechanism 12 has a cam 30
At the larger diameter portion B of the cam 30, the shaft 14 rotates in the direction indicated by the arrow to pull back the pusher claw 2, and at the smaller diameter portion B' of the cam 30, the shaft 14 rotates in the direction of the arrow b° to cause the pusher claw 2 to protrude. It looks like this. Also,
The shape and arrangement of the cam 29 are as shown in FIG. In this cam mechanism 13, as in the case of the cam mechanism 12 described above, the shaft 15 rotates in the direction of arrow C at the large diameter portion C of the cam 29 to open the gripping claw 3, and the shaft 15 opens the gripping claw 3 at the small diameter portion C of the cam 29. '', the shaft 15 rotates in the force direction of arrow C° to close the gripping claws 3.The operation timing of the pusher claws 2 and the gripper claws 3 relative to the rotation of the roller 1.lo is Immediately before the grasping claw 3 on the other side comes closest to the other side on the straight line P, the pushing claw 2 and the grasping claw 3 perform a protruding and grasping operation, respectively, and immediately after passing the straight line P, the pushing claw 2 is pulled back, and from there the roller When 1 and 1' are rotated approximately 90 degrees, the gripping claws 3 perform a releasing operation.

以上の構成において、ボビン6に巻回された被加工物4
に対し、次のようにして加工を行う。
In the above configuration, the workpiece 4 wound around the bobbin 6
The processing is performed as follows.

まず、ボビン6に巻回された被加工物4をガイドローラ
7からジグザグ折り畳み装置5のローラlとローラl′
の間に通し、この状態でモータ11を作動させてローラ
1.loを相反対方向に同期回転させる。
First, the workpiece 4 wound around the bobbin 6 is moved from the guide roller 7 to the rollers l and l' of the zigzag folding device 5.
In this state, the motor 11 is operated to move the roller 1. LO are rotated synchronously in opposite directions.

ローラl、1゛の回転が開始されると、一方のローラl
の把持爪3と他方のローラl°の押込み爪2か次第に接
近し、互いが最接近する直前で、第7図中(イ)で示す
ようにローラl′の押込み爪2がスリット20から突出
してローラlの把持爪3と開口端23の間に被加工物4
を折目を付けるように押込む、この状態においてローラ
1の把持爪3が次第に閉じていく、そして、ローラlの
把持爪3とローラl°の押込み爪2が直線P上で最接近
したところでは、同図中(■)で示すように押込み爪2
は最も突出し、把持爪3は被加工物4を押込み爪2と共
に把持する。さらにローラ1,1゛の回転によって把持
爪3と押込み爪2が直線Pから距離dだけ移動すると、
そこで同図中(八)で示すように押込み爪2を引き戻し
、把持爪3に把持された被加工物4の間からその先端部
を引き抜く、このとき、把持爪3に差し込まれている押
込み爪2は直線Pに対して平行を成すため、把持爪3や
開口端23からは大きな曲げ方向の力を受ない、したが
って、押込み爪2は被加工物4の間からスムースに引き
抜かれ、被加工物4のみが把持爪3によって確実に把持
される。さらに、この状態のままローラl、1’が約9
0°回転すると、そこでローラl側の把持爪3による被
加工物4の一方側の折り畳みを完了する。
When the rotation of rollers l and 1 is started, one roller l
The gripping claw 3 of the roller l' and the pushing claw 2 of the other roller l° gradually approach each other, and just before they approach each other, the pushing claw 2 of the roller l' protrudes from the slit 20, as shown in (a) in FIG. The workpiece 4 is placed between the gripping claw 3 of the roller l and the open end 23.
In this state, the gripping claws 3 of the roller 1 gradually close, and when the gripping claws 3 of the roller l and the pushing claws 2 of the roller l° are closest to each other on the straight line P, As shown in the figure (■), press the push-in claw 2.
is the most protruding, and the gripping claws 3 grip the workpiece 4 together with the pushing claws 2. Further, when the gripping claws 3 and the pushing claws 2 move by a distance d from the straight line P due to the rotation of the rollers 1 and 1,
Therefore, as shown in (8) in the same figure, the push-in claw 2 is pulled back and the tip of the workpiece 4 is pulled out from between the workpieces 4 held by the gripping claws 3. At this time, the push-in claws inserted into the gripping claws 3 2 is parallel to the straight line P, so it does not receive a large bending force from the gripping claws 3 or the opening end 23. Therefore, the pushing claws 2 are smoothly pulled out from between the workpieces 4, and the workpieces are Only the object 4 is reliably gripped by the gripping claws 3. Furthermore, in this state, the rollers l and 1' are approximately 9
When it rotates by 0°, the folding of one side of the workpiece 4 by the gripping claws 3 on the roller l side is completed.

続いて、ローラ1.l’の連続的な回転により、ローラ
1′側の把持爪3に同様にして被加工物4を把持させて
被加工物4の他方側の折り畳みを行う、以下、同様にし
て被加工物4を交互に折り畳んでいく。
Next, roller 1. By continuous rotation of l', the gripping claws 3 on the roller 1' side similarly grip the workpiece 4 and fold the other side of the workpiece 4. Fold alternately.

そして、折り畳まれた被加工物4は次の工程で中央から
切断し、さらに所定量ずつ次の包装工程に搬送する。
Then, the folded workpiece 4 is cut from the center in the next step, and further transported by a predetermined amount to the next packaging step.

(発明の効果) 以上で詳細に説明したように、本発明によれば、押込み
爪が引き抜かれるときには、把持爪に差込まれている押
込み爪が両ローラの回転中心を通る直線と平行を成すの
で、押込み爪に無理な曲げ方向の力がかからなくなり、
押込み爪の破損はもとより被加工物の傷つき等も無くな
る。さらに、押込み爪が被加工物をこじらずに引き抜か
れるので、この引き抜き時に被加工物の把持が外れ難く
くなり、折り畳み不良が極めて少なくなる。
(Effects of the Invention) As explained in detail above, according to the present invention, when the pushing claw is pulled out, the pushing claw inserted into the gripping claw is parallel to the straight line passing through the rotation centers of both rollers. Therefore, no unreasonable bending force is applied to the push-in claw,
Not only will there be no damage to the push-in claw, but there will be no damage to the workpiece. Furthermore, since the push-in claws are pulled out without prying the workpiece, the workpiece is difficult to lose grip on when pulled out, and folding defects are extremely reduced.

その結果、製品の商品性を低下させることなく装置の作
動速度を高めることが出来るようになる。
As a result, the operating speed of the device can be increased without reducing the marketability of the product.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図ないし第7図は本発明の一実施例を示すものであ
り、第1図は第3図のI−Iに対応する断面図、第2図
は模式平面図、第3図は正面図、第4図は分解斜視図、
第5図は第3図のり一■に対応する断面図、第6図は第
3図の■−■に対応する断面図、第7図は連続した動作
を示す部分拡大断面図である。また、第8図は従来の技
術を示す模式断面図であり、第9図は同部分拡大断面図
である。 1、lo・・・ローラ、 2・・・押込み爪。 3・・・把持爪。 4・・・被加工物。 第 図 第9図 第 図
1 to 7 show one embodiment of the present invention, in which FIG. 1 is a sectional view corresponding to II in FIG. 3, FIG. 2 is a schematic plan view, and FIG. 3 is a front view. Figure 4 is an exploded perspective view,
5 is a cross-sectional view corresponding to the line 1--2 in FIG. 3, FIG. 6 is a cross-sectional view corresponding to line 1--2 in FIG. 3, and FIG. 7 is a partially enlarged sectional view showing continuous operation. Moreover, FIG. 8 is a schematic sectional view showing the conventional technique, and FIG. 9 is an enlarged sectional view of the same portion. 1, lo...roller, 2...pushing claw. 3...Gripping claw. 4...Workpiece. Figure 9 Figure 9

Claims (1)

【特許請求の範囲】[Claims] (1)相反対方向に回転する一対のローラに押込み爪と
把握爪を各々装着し、前記一方のローラの押込み爪で他
方のローラの把握爪に被加工物を押込んで折目を形成し
次いで押込み爪を引き抜いて帯状の被加工物を把握させ
るジグザグ折り畳み装置において、前記押込み爪の引き
抜きのときに前記把握爪に差込まれている押込み爪が、
前記一対のローラの回転中心を通る直線と平行を成すよ
うに押込み爪と把握爪を各ローラに配置したことを特徴
とするジグザグ折り畳み装置。
(1) A pushing pawl and a grasping pawl are respectively attached to a pair of rollers rotating in opposite directions, and the pressing pawl of one roller pushes the workpiece into the grasping pawl of the other roller to form a crease. In a zigzag folding device that grips a strip-shaped workpiece by pulling out a pushing claw, the pushing claw is inserted into the grasping claw when the pushing claw is pulled out,
A zigzag folding device characterized in that a pushing pawl and a grasping pawl are arranged on each roller so as to be parallel to a straight line passing through the center of rotation of the pair of rollers.
JP63190826A 1988-07-30 1988-07-30 Zigzag folding device Expired - Fee Related JP2673557B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63190826A JP2673557B2 (en) 1988-07-30 1988-07-30 Zigzag folding device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63190826A JP2673557B2 (en) 1988-07-30 1988-07-30 Zigzag folding device

Publications (2)

Publication Number Publication Date
JPH0243179A true JPH0243179A (en) 1990-02-13
JP2673557B2 JP2673557B2 (en) 1997-11-05

Family

ID=16264405

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63190826A Expired - Fee Related JP2673557B2 (en) 1988-07-30 1988-07-30 Zigzag folding device

Country Status (1)

Country Link
JP (1) JP2673557B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020100456A (en) * 2018-12-20 2020-07-02 株式会社リコー Sheet folding device and image forming system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53133126A (en) * 1977-04-23 1978-11-20 Kobayashi Recording Papers Mfg Folding device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53133126A (en) * 1977-04-23 1978-11-20 Kobayashi Recording Papers Mfg Folding device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020100456A (en) * 2018-12-20 2020-07-02 株式会社リコー Sheet folding device and image forming system

Also Published As

Publication number Publication date
JP2673557B2 (en) 1997-11-05

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