JP2012144279A - Packaging apparatus - Google Patents

Packaging apparatus Download PDF

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JP2012144279A
JP2012144279A JP2011004562A JP2011004562A JP2012144279A JP 2012144279 A JP2012144279 A JP 2012144279A JP 2011004562 A JP2011004562 A JP 2011004562A JP 2011004562 A JP2011004562 A JP 2011004562A JP 2012144279 A JP2012144279 A JP 2012144279A
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motor
welding
transport
product
article
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JP5600075B2 (en
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Junji Matsumoto
純治 松本
Kusu Ri
楠 李
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MARUYAMA MACHINERY CO Ltd
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MARUYAMA MACHINERY CO Ltd
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Abstract

PROBLEM TO BE SOLVED: To make a transport part automatically open when necessary without excessively increasing cost of a packaging apparatus, and to easily achieve high-productivity packaging work.SOLUTION: In this packaging apparatus including, in an intermediate part of a transport path 10, a welding and cutting part 30A where a heater plate 31a for welding and cutting a resin film in the width direction is arranged to be capable of advancing/retracting operation and advances to a welding position by drive force of a motor, and a transport part 40A where a pair of roller conveyers 41, 42 for transporting an article 200 to the downstream side by sandwiching it therebetween on the downstream side thereof are openably/closably arranged, the heater plate 31a advances to the welding position by normal rotational drive of the motor, at least one of the roller conveyers 41, 42 is allowed to move in the opening/closing directions, urged in the closing direction, and opens the transport part 40A by reverse rotational drive of the motor; the motor performs reverse rotational drive by inserting the article 200 in a predetermined situation; and the closed transport part 40A receives the tip side of the article by opening the inlet side.

Description

本発明は、挿入された品物を樹脂フィルムの間に挟み、その後端側で樹脂フィルムを溶着・切断して連続的に包装を行いながら搬送部で送り出す包装装置に関する。   The present invention relates to a packaging apparatus that sandwiches an inserted product between resin films, and that is fed and cut at a rear end side thereof to continuously feed the product while conveying the resin film.

雨天の配達時に新聞が濡れるのを防止するため、新聞店においてポリエチレン等の樹脂フィルム(樹脂シート)で新聞を一部ずつパック詰めして防水性を高めることが一般に行われている。このような包装作業を短時間で効率的に完了させるための装置として、例えば特許第4084708号公報や特開2007−223641号公報に記載され、図10に示すような構成を有した包装装置が知られている。   In order to prevent the newspaper from getting wet during rainy weather delivery, it is a common practice to pack the newspaper part by part with a resin film (resin sheet) such as polyethylene in a newspaper store to improve waterproofness. As an apparatus for efficiently completing such a packaging operation in a short time, for example, a packaging apparatus described in Japanese Patent No. 4084708 and Japanese Patent Application Laid-Open No. 2007-223461 has a configuration as shown in FIG. Are known.

この包装装置では、挿入口11に挿入された品物を1対のロール体100a,100bから供給された帯状の樹脂フィルムで挟みながら送り、品物後端側の樹脂フィルムを溶着切断部30で溶着・切断して、ローラーコンベヤ41,42を対向配置してなる搬送部40で下流側に送るものとされ、その溶着・切断の際にシャッター板21で溶着切断部30上流側の樹脂フィルムを押圧し、張った状態にして溶着・切断作業をスムースに行えるようにしている。   In this packaging device, the product inserted into the insertion port 11 is fed while being sandwiched between the strip-shaped resin films supplied from the pair of roll bodies 100a and 100b, and the resin film on the rear end side of the product is welded and cut by the welding and cutting unit 30. The sheet is cut and sent to the downstream side by the conveying unit 40 formed by facing the roller conveyors 41 and 42, and the resin film on the upstream side of the welding and cutting unit 30 is pressed by the shutter plate 21 during the welding and cutting. In the tensioned state, welding and cutting work can be performed smoothly.

しかし、包装対象の品物が配達用の新聞である場合、例えば正月用の広告が満載されて通常の数倍の厚さを有した状態で包装されるケースや企業・宿泊施設用に複数部纏めて包装されるケース等にあっては、図11に示すように下向きの搬送路で品物が滑り落ちないようにローラーコンベヤ41,42をバネ51,52で密着方向に付勢して搬送部40を閉じている関係で、前記のような厚い品物200が侵入すると閉じた搬送部40の入口部分に先端側が衝突して、ローラーコンベヤ41,42と樹脂フィルム、樹脂フィルムと品物200との間で各々滑りを生じながら徐々に搬送部40内にくわえ込まれていくことになる。   However, if the article to be packaged is a delivery newspaper, for example, it will be packed in multiple cases for cases and companies / accommodation facilities that are packed with advertisements for New Years and packed several times thicker than usual. In the case of a case and the like packaged, the roller conveyors 41 and 42 are urged in the contact direction by springs 51 and 52 so that the articles do not slide down on the downward conveying path as shown in FIG. When the thick article 200 as described above enters, the leading end collides with the entrance portion of the closed conveying section 40, and the roller conveyors 41, 42 and the resin film, and between the resin film and the article 200 Each slip is gradually inserted into the conveying section 40 while causing slippage.

この搬送部40が品物200を加え込む際の滑りで樹脂フィルムにズレが生じないようにするため、品物200を挿入口11から勢いよく押し込む方法が一般的に採用されている。ところが、この強く押し込む方法は熟練者でも失敗しやすく、樹脂フィルムだけが引き込まれて復旧に長時間を要する事態に陥りやすい。   In order to prevent the resin film from being displaced due to slippage when the transport unit 40 adds the product 200, a method of pressing the product 200 through the insertion port 11 is generally employed. However, this method of strongly pushing in is likely to fail even by a skilled person, and only a resin film is pulled in, so that it takes a long time to recover.

また、図12(A)の部分拡大図に示すように複数の束からなる品物350が挿入された場合、図12(B)に示すように上側の束が後方にずれながらローラーコンベヤ41,42間に侵入して搬送部40の入口側でくわえ込まれ、先端側が細く変形して品物350の全長が長くなるため、側面が綺麗にパックされなかったり上側の樹脂フィルム350aが無駄に消費されたりして、単位時間当たりの包装数の減少と生産性の低下を招く結果となりやい。   Further, when an article 350 composed of a plurality of bundles is inserted as shown in the partially enlarged view of FIG. 12A, the roller conveyors 41 and 42 are moved while the upper bundle is displaced backward as shown in FIG. Since the front end side is deformed thinly and the total length of the article 350 is increased, the side surface is not packed cleanly or the upper resin film 350a is wasted. As a result, the number of packages per unit time is reduced and the productivity is lowered.

斯かる問題に対応するために、近年では図13に示すような包装装置が提供されている。これは所定レベル以上の厚さを有する品物200が侵入した場合に、ソレノイド90等の動力手段で可動側のローラーコンベヤ41上流側部分を持ち上げて搬送部40入口側を開く方式を採用している。しかしながら、この包装装置では搬送部40を開くための新たな動力手段の追加を要して製造コストが嵩んでしまうという問題がある。   In order to cope with such a problem, a packaging apparatus as shown in FIG. 13 has been provided in recent years. This adopts a method in which when the article 200 having a thickness of a predetermined level or more enters, the upstream side portion of the movable roller conveyor 41 is lifted by the power means such as the solenoid 90 and the inlet side of the transport unit 40 is opened. . However, this packaging apparatus has a problem that a new power means for opening the transport unit 40 needs to be added and the manufacturing cost increases.

特許第4084708号公報Japanese Patent No. 4084708 特開2007−223641号公報Japanese Patent Laid-Open No. 2007-223641

本発明は、上述した問題を解決しようとするものであり、所定の品物を樹脂フィルムで連続的に包装する包装装置について、過剰なコストアップを伴うことなく必要に応じて搬送部を自動的に開くものとして、生産性の高い包装作業を容易に実現できるようにすることを課題とする。   The present invention is intended to solve the above-described problems, and a packaging device that continuously wraps a predetermined product with a resin film automatically moves a transport unit as necessary without excessive cost increase. As an object to be opened, an object is to make it possible to easily realize a highly productive packaging operation.

そこで、本発明は、挿入口と排出口の間に包装対象である品物の搬送路が形成されて、挿入された品物を一対のロール体から延出した帯状の樹脂フィルムで両側から挟みながら品物周囲の樹脂フィルムを重ねた部分を溶着することで包装を行うものであって、その搬送路の途中に、品物後端側で樹脂フィルムを幅方向に溶着してその位置で切断させるためのヒータ板が進退動作可能に配置されてモータの駆動力で溶着位置に進行するものとされた溶着切断部と、その下流側で搬送路に沿うように対向配置されて間に挟み込んだ品物を下流側に搬送する一対のローラーコンベヤが搬送路を開閉可能に配置されてなる搬送部とを備えた包装装置において、そのヒータ板はリンクを介し連結されたモータが正回転駆動することで溶着位置に進行するものとされ、その一対のローラーコンベヤの少なくとも一方は搬送路の開閉方向に可動とされて閉方向に付勢されているとともに前記モータの逆回転駆動により搬送部を開く方向に動作するものとされ、所定の状況で品物が搬送路に挿入されることでモータが逆回転駆動し、閉じていた搬送部が少なくとも入口側を開いて品物の先端側を受け入れる、ことを特徴とするものとした。   Therefore, the present invention is such that a conveyance path for an article to be packaged is formed between an insertion port and an outlet, and the inserted item is sandwiched from both sides by a belt-shaped resin film extending from a pair of roll bodies. A heater for welding by overlapping a portion of the surrounding resin film, and welding the resin film in the width direction on the rear end side of the product in the middle of the conveying path to cut at that position The plate is arranged so that it can move forward and backward, and the welding cutting part that is advanced to the welding position by the driving force of the motor, and the downstream side of the article sandwiched between the oppositely arranged along the conveyance path In a packaging device having a pair of roller conveyors that convey to a conveyor unit that is arranged so that the conveyance path can be opened and closed, the heater plate advances to a welding position by a motor that is connected via a link being driven to rotate forward. Do And at least one of the pair of roller conveyors is movable in the opening and closing direction of the conveying path and biased in the closing direction, and operates in the direction of opening the conveying portion by reverse rotation driving of the motor. When the article is inserted into the conveyance path in a predetermined situation, the motor is driven to rotate reversely, and the closed conveyance section opens at least the inlet side and accepts the leading end side of the article.

このように、包装装置の搬送部を開くための動力手段として、溶着切断作業時以外は使用されないヒータ板駆動用のモータの逆回転駆動力を利用する構成としたことにより、新たな動力手段追加のためのコストアップを回避しながら必要時に搬送部を確実に開くものとなる。   In this way, as a power means for opening the transport section of the packaging device, a new power means is added by using the reverse rotation driving force of the heater plate driving motor that is not used except during welding cutting work. Therefore, it is possible to reliably open the transport unit when necessary while avoiding the cost increase.

また、この場合、その溶着切断部には、所定のスライド体が前記モータの駆動力により搬送路の搬送方向に交差する向きで進退動作を行うように配置されており、このスライド体は、前記モータの正回転駆動による進行動作でヒータ板を溶着位置に進行させるとともに、前記モータの逆回転駆動による退行動作で一方のローラーコンベヤに付設した部材の一部に当接して押すことにより搬送部を開くものとされ、その進行動作時にはスライド体が前記部材から離間する、ことを特徴としたものとすれば、ヒータ板の溶着・切断動作が搬送部の閉鎖方向の動作とは分離されて、スムースな溶着・切断作業を行いやすいものとなる。   In this case, the welding and cutting portion is arranged such that a predetermined slide body moves forward and backward in a direction intersecting the transport direction of the transport path by the driving force of the motor. The heater plate is advanced to the welding position by the forward movement of the motor by the forward rotation drive, and the transport unit is pushed by abutting and pressing a part of the member attached to one of the roller conveyors by the backward movement of the reverse rotation drive of the motor. If the slide body is separated from the member during the moving operation, the welding / cutting operation of the heater plate is separated from the operation in the closing direction of the transfer unit, and the smooth movement is achieved. Easy welding and cutting work.

この場合、そのスライド体から搬送方向に交差する向きで延設されて前記リンクの一部を構成しているカムロッドの先端側にモータで回動するカムが当接又は連結してカム機構を構成しており、モータの正逆回転駆動力がカム機構を介してスライド体の進退往復動作に変換されることを特徴としたものとすれば、比較的小トルクのモータでも搬送部におけるスムースな開閉動作を実現しやすいものとなる。   In this case, a cam mechanism that is extended from the slide body in a direction crossing the conveying direction and a cam that rotates by a motor contacts or is connected to the distal end side of the cam rod that forms part of the link constitutes a cam mechanism. If the motor's forward / reverse rotational driving force is converted into the forward / backward reciprocating motion of the slide body via the cam mechanism, smooth opening and closing of the transport section can be achieved even with a relatively small torque motor. It becomes easy to realize the operation.

さらに、上述した包装装置において、その溶着切断部の上流側には、先端側を下流側に向けながら搬送路を開閉するように軸支されて閉鎖方向に付勢されたシャッター板が設けられており、このシャッター板には、挿入された品物がこれを押し開いて通過する際にシャッター板が所定角度以上の開度でONになるスイッチ手段が付設されており、スイッチ手段のONによりモータが逆回転駆動して搬送部を開くことを特徴としたものとすれば、厚物検出用の光学的センサ等の精密で高価な検出手段によらずに簡易で安価な検出手段により、搬送部の開き動作を自動的且つ確実に行えるものとなる。   Further, in the packaging apparatus described above, a shutter plate that is pivotally supported and biased in the closing direction so as to open and close the conveyance path with the tip side facing the downstream side is provided on the upstream side of the welding cut portion. The shutter plate is provided with a switch means that turns on the shutter plate when the inserted article passes through the opening, and the motor is turned on when the switch means is turned on. If it is characterized by opening the conveyance unit by reverse rotation driving, the simple and inexpensive detection means is used instead of the precise and expensive detection means such as an optical sensor for detecting a thick object. The opening operation can be performed automatically and reliably.

或いは、上述のようにヒータ板駆動用のモータを利用して搬送部を開く方式とは異なるものとして、挿入口と排出口の間に包装対象である品物の搬送路が形成されて、挿入された品物を一対のロール体から延出した帯状の樹脂フィルムで両側から挟みながら品物周囲の樹脂フィルムを重ねた部分を溶着することで包装を行うものであって、その搬送路の途中に、品物後端側で樹脂フィルムを幅方向に溶着して溶着位置で切断させるためのヒータ板が進退動作可能に配置されてモータの駆動力で溶着位置に進行するものとされた溶着切断部と、その下流側で搬送路に沿うように対向配置されて間に挟み込んだ品物を下流側に搬送する一対のローラーコンベヤが搬送路を開閉可能に配置されてなる搬送部とを備えた包装装置において、溶着切断部上流側で先端側を下流側に向けながら搬送方向に対し傾斜して形成されて品物先端が当接する当接面を所定部分に有して所定位置で軸支されてなるレバー部材が配設されており、所定厚さ以上の品物が挿入された場合に、通常は搬送路の所定範囲を閉鎖している当接面に、挿入された品物の先端が当接してこの当接面上を滑りながらレバー部材を押し開くことにより、所定部分でレバー部材と連結または一体となった一方のローラーコンベヤが持ち上がり、閉じていた搬送部が少なくとも上流側部分を開いて品物の先端側を受け入れることを特徴としたものとすれば、モータ等の能動的な動力手段を利用することなく品物の挿入圧力を利用しながら確実に搬送部を開くことができ、且つ、厚物検出手段や高度な制御処理によることなく品物の厚さに応じた開閉の有無・開度にて搬送部を自動的に動作させることができる。   Alternatively, as described above, as a method different from the method of using the heater plate driving motor to open the conveyance unit, a conveyance path for the article to be packaged is formed and inserted between the insertion port and the discharge port. The product is packaged by welding the overlapping parts of the resin film around the product while sandwiching the product from both sides with a strip-shaped resin film extending from a pair of rolls. A welding cutting section in which a heater plate for welding the resin film in the width direction on the rear end side and cutting it at the welding position is arranged so as to be able to advance and retreat, and proceeds to the welding position by the driving force of the motor; and In a packaging apparatus including a pair of roller conveyors that are arranged opposite to each other along a conveyance path on the downstream side and convey a product sandwiched therebetween to the downstream side, and a conveyance unit that is arranged so that the conveyance path can be opened and closed. Cutting part A lever member is provided that is formed at an incline with respect to the conveying direction while the tip side is directed to the downstream side on the flow side and has a contact surface with which the tip of the product abuts at a predetermined portion and is pivotally supported at a predetermined position. When a product with a thickness greater than or equal to a predetermined thickness is inserted, the tip of the inserted product usually comes into contact with the contact surface that closes the predetermined range of the conveyance path and slides on the contact surface. While the lever member is pushed open, one roller conveyor connected to or integrated with the lever member at a predetermined portion is lifted, and the closed transport unit opens at least the upstream portion to receive the leading end side of the item. As a result, it is possible to reliably open the conveying section while using the insertion pressure of the article without using an active power means such as a motor, and by using a thick object detection means and advanced control processing. Without goods It can be automatically operated transport unit at opening and closing of the presence or absence opening corresponding to the.

新たな動力手段を要しない簡易な構成で搬送部を開くものとした本発明によると、過剰なコストアップを伴うことなく必要に応じて自動的に搬送部を開くものとして、生産性の高い包装作業を容易に実現できるものである。   According to the present invention, in which the transport unit is opened with a simple configuration that does not require a new power means, the transport unit is automatically opened as necessary without excessive cost increase, and a highly productive packaging The work can be easily realized.

本発明における第1の実施の形態の主要部分の構成を示す部分縦断面図。The fragmentary longitudinal cross-section which shows the structure of the principal part of 1st Embodiment in this invention. (A),(B)は図1の包装装置の動作を説明するための部分縦断面図。(A), (B) is a fragmentary longitudinal cross-sectional view for demonstrating operation | movement of the packaging apparatus of FIG. (A),(B)は図2に続いて図1の包装装置の動作を説明するための部分縦断面図。(A), (B) is a fragmentary longitudinal cross-sectional view for demonstrating operation | movement of the packaging apparatus of FIG. 1 following FIG. 図1の包装装置におけるスライド部材とモータ側とのリンク構造及びその動作を示す部分拡大図。The elements on larger scale which show the link structure of the slide member and motor side in the packaging apparatus of FIG. 1, and its operation | movement. 図4のリンク構造の応用例を示す部分拡大図。The elements on larger scale which show the application example of the link structure of FIG. (A),(B),(C),(D)は本発明における第2の実施の形態の主要部分の構成及び動作を説明するための部分縦断面図。(A), (B), (C), (D) is a partial longitudinal cross-sectional view for demonstrating the structure and operation | movement of the principal part of 2nd Embodiment in this invention. 図6の包装装置において厚くない品物が挿入された場合のシャッター板の状態を示す部分縦断面図。The fragmentary longitudinal cross-section which shows the state of the shutter board | plate when the goods which are not thick are inserted in the packaging apparatus of FIG. 図6の包装装置の応用例を示す部分縦断面図。The fragmentary longitudinal cross-section which shows the application example of the packaging apparatus of FIG. (A),(B)は図6の包装装置の他の応用例を示す部分縦断面図。(A), (B) is a fragmentary longitudinal cross-section which shows the other application example of the packaging apparatus of FIG. 従来例における主要部分の構成を示す部分縦断面図。The fragmentary longitudinal cross-section which shows the structure of the principal part in a prior art example. 図10の包装装置の搬送部の詳細及び動作を説明するための部分拡大図。The elements on larger scale for demonstrating the detail and operation | movement of a conveyance part of the packaging apparatus of FIG. (A),(B)は図10の包装装置の動作を説明するための部分拡大図。(A), (B) is the elements on larger scale for demonstrating operation | movement of the packaging apparatus of FIG. 他の従来例の主要部分の構成を示す部分縦断面図。The fragmentary longitudinal cross-section which shows the structure of the principal part of another prior art example.

以下に、図面を参照しながら本発明を実施するための形態を説明する。尚、以下の包装装置は、品物の進行方向に沿う方向の樹脂フィルム端部側も溶着する機能を有しているが、この構成部分は従来例と同様であるためその説明は省略する。   Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. In addition, although the following packaging apparatuses have the function to weld also the resin film edge part side of the direction along the advancing direction of goods, since this component is the same as that of a prior art example, the description is abbreviate | omitted.

図1は、本実施の形態である包装装置の主要部分の構成を説明するために一部を省略して示した部分縦断面図である。この包装装置は、包装対象である品物として配達用の新聞を想定しており、新聞の防水性を高める目的でポリエチレン等の樹脂フィルムでパック詰めを行うことを主たる用途としているが、例えば雑誌の包装など、他の品物の包装作業に使用することも可能である。   FIG. 1 is a partial longitudinal sectional view showing a main part of the packaging apparatus according to the present embodiment, with a part omitted. This packaging device is supposed to be a newspaper for delivery as an article to be packaged, and is mainly used for packing with a resin film such as polyethylene for the purpose of improving the waterproofness of the newspaper. It can also be used for packaging other items such as packaging.

その構成は、装置上面に図の奥行き方向に延びた挿入口11が開口し、図示しない排出口まで斜め下向きの品物の搬送路10が形成されており、この搬送路10に上から挿入されて下降していく品物を、装置上部左右側に配置した図示しない一対のロール体から中央方向に延出された帯状の樹脂フィルム(樹脂シート)で挟みながら、品物周囲の樹脂フィルムが重ねられた部分を溶着することによりパック詰めして包装作業を行うようになっている。   The structure is such that an insertion port 11 extending in the depth direction of the drawing is opened on the upper surface of the apparatus, and a conveyance path 10 for an article is formed obliquely downward to a discharge port (not shown), and inserted into the conveyance path 10 from above. The part where the resin film around the product is overlapped while sandwiching the descending product with a strip-shaped resin film (resin sheet) extending in the center direction from a pair of rolls (not shown) arranged on the left and right sides of the upper part of the device It is designed to pack and pack the product by welding.

斜め下向きに形成された搬送路10の途中には、搬送路10を開閉するようにその近傍で軸支されるとともに基端側に設けた図示しないバネで閉鎖方向に付勢されて溶着フィルムの幅方向にその幅方向を一致しながら先端側を下流側に向けた状態で、シャッター板21Aが配置されている。   In the middle of the conveying path 10 formed obliquely downward, the conveying path 10 is pivotally supported in the vicinity thereof and is urged in the closing direction by a spring (not shown) provided on the base end side so that the welding film The shutter plate 21A is arranged in a state where the front end side faces the downstream side while matching the width direction with the width direction.

このシャッター板21Aのすぐ下方には、品物の包装を行うための溶着切断部30Aが配置されている。この溶着切断部30Aには、挿入された品物の後端側で重ねられた樹脂フィルムを幅方向に線状に溶着してその位置で切断させるためのヒータ板31aを設けたスライド体31が、図示しないモータで正逆回転駆動されるディスク50A及びこれに連結したシャフト47により搬送方向に交差して配置されたレール部材45上を往復摺動するように配置されて、ヒータ板31a先端側(カット刃)が搬送路10及び樹脂フィルムを介して対向配置されたスポンジ状のクッション材32に対し進退動作を行うようになっている。尚、ヒータ板31aは、前述のようにスライド体31上に設けずに、スライド体31の進行方向の途中位置でこれとは別個に進退動作するように配置して、スライド体31の進行動作により当接されながら押されて進行動作を行うようにしてもよい。   Immediately below the shutter plate 21A, a welded cutting portion 30A for wrapping goods is disposed. In this welding cut part 30A, a slide body 31 provided with a heater plate 31a for welding the resin film stacked on the rear end side of the inserted article linearly in the width direction and cutting at that position, A disc 50A that is driven to rotate forward and backward by a motor (not shown) and a shaft 47 connected to the disc 50A are arranged so as to reciprocately slide on a rail member 45 that is arranged to intersect the conveying direction. The cutting blade) moves forward and backward with respect to the sponge-like cushion material 32 disposed so as to face the conveyance path 10 and the resin film. The heater plate 31a is not provided on the slide body 31 as described above, but is arranged so as to advance and retreat separately at an intermediate position in the direction of movement of the slide body 31. The advancing operation may be performed by being pressed while abutting.

この溶着切断部30Aのすぐ下流側には、搬送レール13に平行した搬送路10に沿ってローラー駆動式のローラーコンベヤ41,42が搬送面を互いに対向するように設けられてなる搬送部40Aが配置されている。このローラーコンベヤ41,42は、図示しない駆動手段で作動して搬送動作を行うとともに図示しない制御装置で動作制御されている。また、上側のローラーコンベヤ41は、下側のローラーコンベヤ42に対し近接・離間可能な状態で設けられているとともに図示しないバネで近接方向に付勢されており、樹脂フィルムで包装された品物をその厚さに応じてローラーコンベヤ42との間に挟み込むようになっている。   Immediately downstream of the weld cutting unit 30A, a transport unit 40A in which roller-driven roller conveyors 41 and 42 are provided along the transport path 10 parallel to the transport rail 13 so that the transport surfaces face each other. Has been placed. The roller conveyors 41 and 42 are operated by a driving means (not shown) to perform a conveying operation and are controlled by a control device (not shown). Further, the upper roller conveyor 41 is provided in a state in which the upper roller conveyor 41 can be moved toward and away from the lower roller conveyor 42 and is biased in the proximity direction by a spring (not shown). Depending on the thickness, the roller conveyor 42 is sandwiched.

本実施の形態においては、搬送路10途中のシャッター板21Aの位置と溶着切断部30Aの位置にセンサ70,71が配置されており、挿入された品物の進行位置を検出して検出信号を図示しない電子制御装置に出力し、これを検知した電子的制御装置が各種の制御を行うようになっている。尚、以上の構成部分は従来例にも共通した周知のものである。   In the present embodiment, sensors 70 and 71 are arranged at the position of the shutter plate 21A and the position of the weld cutting part 30A in the middle of the conveyance path 10, and the detection signal is shown by detecting the progress position of the inserted item. The electronic control device that outputs the signal to the electronic control device that does not perform the control performs various controls. Note that the above-described components are well known in common with the conventional example.

そして、本発明においては、ヒータ板31aがモータの正回転駆動で溶着方向に進行するものとされ、その下流側の搬送部40Aは可動側のローラーコンベヤ41が固定側のローラーコンベヤ42に向かって付勢されて通常閉じているが、溶着切断部30Aのモータが逆回転駆動することでローラーコンベヤ41の上流側部分がローラーコンベヤ42から離間して開き、例えば厚物対応設定時等の所定の状況において品物が搬送路10に挿入されることを契機に、モータが逆回転駆動して閉じていた搬送部40Aが入口側を自動的に開いて、品物の先端側を受け入れるようになっている点を特徴としている。   In the present invention, the heater plate 31a advances in the welding direction by the forward rotation of the motor, and the transport unit 40A on the downstream side of the movable roller conveyor 41 moves toward the fixed roller conveyor 42. Although normally energized and closed, the upstream portion of the roller conveyor 41 is opened away from the roller conveyor 42 by the reverse rotation driving of the motor of the welding cutting unit 30A. In the situation, when the item is inserted into the conveyance path 10, the conveyance unit 40A, which has been closed by the reverse rotation of the motor, automatically opens the inlet side and accepts the leading end side of the item. Characterized by dots.

即ち、ヒータ板31aは、搬送路10の搬送方向に対し交差して配置されたレール部材45上を往復摺動するスライド体31に設けられており、モータが逆回転駆動することで摺動したスライド体31の図中左側面がローラーコンベヤ41に付設したカバー体41aの上流側部分で突設したピン状の当接部400に当接して押すようになっており、ローラーコンベヤ41の上流側部分をこれに密着していたローラーコンベヤ42から離間させ、搬送部40A入口側を開き通常よりも厚い品物の先端側を受け入れてくわえ込めるようになっている。   In other words, the heater plate 31a is provided on the slide body 31 that reciprocally slides on the rail member 45 that is arranged so as to intersect the conveyance direction of the conveyance path 10, and is slid when the motor is driven in reverse rotation. The left side surface of the slide body 31 in the drawing is configured to contact and push the pin-shaped contact portion 400 projecting from the upstream portion of the cover body 41 a attached to the roller conveyor 41, and the upstream side of the roller conveyor 41. The part is separated from the roller conveyor 42 that has been in close contact with it, and the inlet side of the conveying unit 40A is opened to accept and hold the leading end side of an article thicker than usual.

したがって、本実施の形態の包装装置では、所定の状況で品物が挿入されて先端側が搬送部40Aまで進んだ際に、その上流側を自動的に開いてこれをスムースに受け入れることで、樹脂フィルムの偏りや品物が搬送方向に延びることが回避可能であり、綺麗な包装を実現しながら包装数量の減少や樹脂フィルムの浪費を最小限に抑えて、生産性の高い包装作業を容易に実現できるものとなっている。   Therefore, in the packaging device of the present embodiment, when an article is inserted in a predetermined situation and the front end side has advanced to the transport unit 40A, the upstream side is automatically opened and smoothly received, thereby the resin film. It is possible to avoid unevenness of the product and the extension of the product in the transport direction, and it is possible to easily realize highly productive packaging work by minimizing the reduction of packaging quantity and waste of resin film while realizing clean packaging. It has become a thing.

また、ヒータ板31aが進行動作を行うモータの正回転駆動時には、スライド体31がカバー体41aの当接部400から離間するため、搬送部40Aの開き動作がヒータ板31a進行方向の動作とは分離されて、溶着・切断作業をスムースに行いやすいものとしている。   In addition, when the motor in which the heater plate 31a performs the forward operation is driven to rotate in the forward direction, the slide body 31 is separated from the contact portion 400 of the cover body 41a. Therefore, the opening operation of the transport portion 40A is the operation in the direction of the heater plate 31a. It is separated so that welding and cutting work can be performed smoothly.

尚、スライド体31がローラーコンベヤ41を離間させる位置までモータを逆回転駆動して厚物対応の動作を行う状況としては、包装開始前時点で操作パネルや切り換えスイッチ等を手動操作して挿入された総ての品物について動作するように設定した状況、或いは搬送路10中に挿入された品物が所定厚さ以上であることを検出する検出手段が配置されて検出結果に基づき電子制御装置がモータを駆動させる設定とした場合に所定厚さ以上の品物が挿入された状況等が想定される。また、モータで回動するディスク50Aはプーリであってもよい。   In addition, as a situation where the slide body 31 rotates the motor to the position where the roller conveyor 41 is separated and performs the operation corresponding to the thick material, it is inserted by manually operating the operation panel, the changeover switch or the like before starting the packaging. In addition, a detection means for detecting the situation set to operate for all the items or that the item inserted into the transport path 10 is not less than a predetermined thickness is arranged, and the electronic control unit operates the motor based on the detection result. When the setting is made to drive, a situation where an article having a predetermined thickness or more is inserted is assumed. Further, the disk 50A rotated by the motor may be a pulley.

次に、図2、図3を参照しながら本実施の形態の包装装置による動作の詳細を説明する。例えば、比較的厚い新聞等の品物200を挿入すると(図2(A))、品物200の先端部は先ずシャッター板21A上流側面に当接し、その先端側を下流側に逃がすように回動させて押し開き、図示しない樹脂フィルムが溶着された先端側部分に先端面中央部分を一致させながら溶着切断部30Aを通過して、樹脂フィルムとともに搬送路10を下降する。   Next, details of the operation of the packaging device according to the present embodiment will be described with reference to FIGS. For example, when an article 200 such as a relatively thick newspaper is inserted (FIG. 2A), the tip of the article 200 is first brought into contact with the upstream side of the shutter plate 21A, and the tip is rotated so as to escape downstream. Then, it passes through the welding cut portion 30A while aligning the center portion of the tip surface with the tip side portion to which a resin film (not shown) is welded, and moves down the conveying path 10 together with the resin film.

すると、センサ71で品物200の侵入を検知した電子制御装置は、モータを逆回転駆動させてディスク50A、シャフト47を介しスライド体31を退行動作させ、これがローラーコンベヤ41のカバー体41a上流側に配置したピン状の当接部400に当接して押すことにより、搬送部40Aの上流側部分を開いて品物200の先端側を受け入れる(図2(B))。   Then, the electronic control unit that detects the intrusion of the article 200 by the sensor 71 drives the motor to rotate in reverse to cause the slide body 31 to retreat via the disk 50A and the shaft 47, and this moves upstream of the cover body 41a of the roller conveyor 41. By abutting and pressing the arranged pin-shaped abutting portion 400, the upstream side portion of the conveying portion 40A is opened and the leading end side of the article 200 is received (FIG. 2B).

この搬送部40Aの開き幅は品物200の厚さよりも小さくてもよく(例えば半分程度)、開いた隙間に品物200の先端側がある程度入ることにより、その後は品物200先端部がローラーコンベヤ41の上流側部分を持ち上げて搬送部40Aの入口を開くため、樹脂フィルムがずれることなく品物200は搬送部40Aにくわえ込まれる(図3(A))。   The opening width of the conveyance unit 40A may be smaller than the thickness of the product 200 (for example, about half), and the leading end side of the product 200 enters the open gap to some extent. Since the side portion is lifted to open the entrance of the transport unit 40A, the article 200 is added to the transport unit 40A without shifting the resin film (FIG. 3A).

そして、搬送動作により品物200は下流側に進み、品物200後端部がシャッター板21A部分を通過したことをセンサ71等の検出信号により電子制御装置が検知することで、品物200の包装位置にて搬送部40Aによる搬送動作を停止させるのに先立って、或いはそれとほぼ同時に、モータを正回転駆動させて溶着切断部30Aのヒータ板31aを下降させ、樹脂フィルムの溶着作業を行う(図3(B))。   Then, the product 200 moves downstream by the conveying operation, and the electronic control device detects that the rear end portion of the product 200 has passed through the shutter plate 21 </ b> A by the detection signal of the sensor 71 or the like, so that the product 200 is placed in the packaging position. Prior to or substantially simultaneously with stopping the conveying operation by the conveying unit 40A, the motor is driven to rotate in the forward direction to lower the heater plate 31a of the welding and cutting unit 30A to perform the resin film welding operation (FIG. 3 ( B)).

ところで、前述のスライド体31のようにモータ等で回動する動力手段から直線運動を得るために、前述した図4のようなリンク機構が広く採用されている。しかし、このリンク機構では、ディスク(回転体)50Aの位相により回転角度と直線移動距離の関係が変わることから、例えば図のCの位置では他の位置に比べて大きなトルクが必要になってしまう。   By the way, in order to obtain a linear motion from the power means that is rotated by a motor or the like like the above-described slide body 31, the above-described link mechanism as shown in FIG. 4 is widely adopted. However, in this link mechanism, since the relationship between the rotation angle and the linear movement distance changes depending on the phase of the disk (rotating body) 50A, for example, a larger torque is required at the position C in the figure than at other positions. .

そこで、包装装置の溶着切断部30Aで使用するモータにトルクの制限がある場合は、図5に示すような平面視インボリュート曲線等に溝を切ったカム50Bを用い、カムロッド48を介してスライド体31に直線往復動作を行わせる等、所定のカム機構を使用することで回転角度と直線移動距離の関係を比例関係に近くすること等によりモータの負担を大きく軽減できることから、比較的低トルクのモータであってもそのまま利用しやすいものとなる。尚、図示は省略するが、このようなカム機構においてヒータ板を進行動作させる他の手段としては、カムの周面にカムロッドの先端部を当接させるとともに、このカムに重ねてヒータ板作動用の別のディスクを設けることによっても可能である。   Therefore, when the motor used in the welding cutting portion 30A of the packaging device has a torque limit, a cam 50B having a groove in a plan view involute curve or the like as shown in FIG. By using a predetermined cam mechanism, such as causing 31 to perform a linear reciprocating operation, the load on the motor can be greatly reduced by making the relationship between the rotation angle and the linear movement distance close to a proportional relationship, etc. Even a motor is easy to use as it is. Although not shown, as another means for advancing the heater plate in such a cam mechanism, the tip of the cam rod is brought into contact with the peripheral surface of the cam, and the heater plate is operated by overlapping the cam. It is also possible to provide another disk.

図6は、本発明における第2の実施の形態の主要部分の構成及び動作を示している。以下に述べる実施の形態では、上述のようなヒータ板駆動用のモータのような能動的な動力手段を利用する方式とは異なるものであり、溶着切断部の上流側で品物の先端が当接する当接面21aが先端側を下流側に向けて搬送方向に対し傾斜して形成され所定位置で軸支されてなるレバー部材としてのシャッター板21Bが配設されており、挿入された品物によりそのシャッター板21Bが押し開かれる際の受動的な動力を利用する点を特徴としている。   FIG. 6 shows the configuration and operation of the main part of the second embodiment of the present invention. The embodiment described below is different from the method using active power means such as the heater plate driving motor as described above, and the tip of the product abuts on the upstream side of the welding cut portion. A shutter plate 21B is provided as a lever member that is formed with the contact surface 21a inclined with respect to the transport direction with the front end facing downstream, and is pivotally supported at a predetermined position. It is characterized in that it uses passive power when the shutter plate 21B is pushed open.

これは、所定厚さ以上の品物が挿入された場合に、通常は搬送路10の所定範囲を閉鎖している当接面21aに、品物先端が当接してその表面上を滑りながらシャッター板21Bを押し開くことにより、所定部分でこれと連結または一体となった可動側のローラーコンベヤ41が持ち上がり、閉じていた搬送部が少なくとも上流側部分を開いて品物の先端側を受け入れるものとなっている。   This is because, when an article having a thickness greater than or equal to a predetermined thickness is inserted, the shutter plate 21B is slid while the tip of the article comes into contact with and slides on the contact surface 21a that normally closes the predetermined range of the transport path 10. The movable roller conveyor 41 that is connected to or integrated with the predetermined portion is lifted up by the predetermined opening, and the closed conveying portion opens at least the upstream portion and accepts the leading end side of the article. .

即ち、図6(A)に示すように、溶着切断部の上流側で樹脂フィルムの押さえ用等の目的で配置されたシャッター板21Bには、下流側部分に搬送方向に突出したレバー部21bが形成されており、これが可動側のローラーコンベヤ41に付設されたカバー体41bをシャッター板21B方向に延長した上流側部分で突設してなる当接部410に対し、開動作で搬送路10側から当接して押すものとなっている。   That is, as shown in FIG. 6 (A), the shutter plate 21B arranged for the purpose of holding the resin film on the upstream side of the welding cut portion has a lever portion 21b protruding in the transport direction on the downstream side portion. It is formed, and this opens the cover body 41b attached to the movable roller conveyor 41 at the upstream portion extending in the direction of the shutter plate 21B, and the opening portion opens the contact portion 410 side. It comes into contact with and pushes.

また、シャッター板21Bの上流側面は、先端側を下流側に向けて搬送方向に対し傾斜して形成され品物先端部が当接する当接面21aとされており、図6(B)に示すように通常よりも厚い品物200が当接してシャッター板21Bを押し広げることで、レバー部21bがカバー体41bの当接部410に当接しながらこれを持ち上げ、図6(C)に示すようにローラーコンベヤ41を持ち上げて搬送部40Bの入口側を開くものとされている。   Further, the upstream side surface of the shutter plate 21B is formed as an abutting surface 21a that is inclined with respect to the conveying direction with the front end side facing the downstream side, and is in contact with the front end portion of the product, as shown in FIG. 6B. When the article 200 thicker than usual comes into contact with and pushes the shutter plate 21B apart, the lever part 21b lifts up while contacting the contact part 410 of the cover body 41b, and the roller as shown in FIG. The conveyor 41 is lifted to open the entrance side of the transport unit 40B.

そして、ある程度搬送部40Bが開き先端部がくわえ込まれた状態で品物200が進行することで更に開いて品物200が搬送部40Bに入る(図6(D))。このように、品物200がシャッター板21Bを押し広げる力を利用することにより、モータ等の動力手段を用いることなく搬送部40Bを確実に開くことができる。   Then, the article 200 is further opened as the conveying section 40B is opened to some extent and the leading end is held in, and the article 200 enters the conveying section 40B (FIG. 6D). In this way, by using the force that the product 200 pushes the shutter plate 21B, the transport unit 40B can be reliably opened without using power means such as a motor.

一方、図7に示すように、厚物ではない通常の品物300が挿入されてシャッター板21Bの部分を通過する場合は、ローラーコンベヤ41を持ち上げないように当接面21a先端側とスポンジ32の間又はレバー部21bと当接面410との間には隙間(アロワンス)が設けられていることから、必要もないのに搬送部40Bを開いてしまう事態を回避できるようになっている。   On the other hand, as shown in FIG. 7, when a normal product 300 that is not thick is inserted and passes through the shutter plate 21 </ b> B, the tip of the contact surface 21 a and the sponge 32 are not lifted so as not to lift the roller conveyor 41. Since a gap (allo-once) is provided between the lever portion 21b and the contact surface 410, it is possible to avoid a situation in which the transport portion 40B is opened although it is not necessary.

このように、本実施の形態では品物が通過する際の当接面21aの開度に応じて、搬送部40Bにおける開閉の有無及び開度が自動的に決定・実行されることから、搬送部40Bを開くために能動的な動力手段を使用しないことに加え、品物の厚さを検出するための高価なセンサや電子制御装置による高度な制御手順を要しないものとなっている。   As described above, according to the present embodiment, since the opening / closing and the opening degree of the conveying unit 40B are automatically determined and executed according to the opening degree of the contact surface 21a when the article passes, the conveying unit In addition to not using active power means to open 40B, it does not require sophisticated control procedures with expensive sensors or electronic control to detect the thickness of the item.

また、この応用例として、図6に示したシャッター板21Bの代わりに、通常のシャッター板21Aに対し図8に示すようなレバー部材22による増力機構を付設することにより、品物200を押し込むときの抵抗を軽減することが可能となるため、比較的柔らかくコシのない品物200であっても搬送部40Bを容易に開くことができる。   In addition, as an application example, when a product 200 is pushed in by adding a force increasing mechanism using a lever member 22 as shown in FIG. 8 to a normal shutter plate 21A instead of the shutter plate 21B shown in FIG. Since it becomes possible to reduce resistance, the conveyance part 40B can be easily opened even if the article 200 is relatively soft and has no stiffness.

さらに、他の応用例として、図9(A)に示すように、図1による実施の形態において可動側のローラーコンベヤ41に付設したカバー体41aの代わりに、その上流側部分をシャッター板21Aの上流側まで延長して先端を鈎状にするとともに前述のシャッター板21Bと同様の働きをする当接面411を形成したカバー体41cを配設し、挿入された品物が当接面411に当接してこれを押し開くことにより全体としてレバー部材としての機能を発揮するものとしても、可動側のローラーコンベヤ41を確実に開くことが可能となる。   Furthermore, as another application example, as shown in FIG. 9A, instead of the cover body 41a attached to the movable roller conveyor 41 in the embodiment according to FIG. A cover body 41c having a contact surface 411 that extends to the upstream side and has a tip-like hook shape and the same function as the shutter plate 21B described above is disposed, and the inserted item contacts the contact surface 411. Even if the function as a lever member is exhibited as a whole by contacting and pushing open, the movable roller conveyor 41 can be reliably opened.

この応用例によると、支点と力点の距離が長くなって品物の硬さ(コシ)が充分でなくとも搬送部40Cを開く力を発揮しやすいことに加え、品物の先端側に樹脂フィルムが密着する前の位置で当接して作動させることから、樹脂フィルムのズレや偏りを生じさせずに包装の仕上がりに悪影響を与えにくいものとなる。尚、この場合においても、厚物ではない通常の品物を通過させるための隙間を当接面411の先端側に形成しておくことが推奨される。   According to this application example, the distance between the fulcrum and the force point becomes long, and the product can easily exert the force to open the conveying section 40C even if the hardness of the product is not sufficient, and the resin film adheres to the tip side of the product. Since the contact is made at the position before the operation, the resin film is not displaced or biased, and it is difficult to adversely affect the finished packaging. Even in this case, it is recommended that a gap for allowing a normal product that is not a thick material to pass through be formed on the tip side of the contact surface 411.

一方、この応用例ではレバー部材としてのカバー体41cが搬送部40C側に直結された形状であるため、品物の搬送に従って挿入口から見える当接面411を有した部分側が意図せずに揺動しやすいものとなる。そこで、図9(B)に示すように、搬送部40Dとは切り離れた別部品であるレバー部材44を、カバー体41dの当接部420がその支点(軸部)と力点の間に接したものとすれば、搬送部40Dの開き動作時以外はその動作を切り離すことができ、品物の搬送動作には影響されないものとすることができる。   On the other hand, in this application example, the cover body 41c as a lever member has a shape that is directly connected to the conveyance unit 40C side, so that the part side having the contact surface 411 that can be seen from the insertion port is unintentionally swung as the product is conveyed. It will be easy to do. Therefore, as shown in FIG. 9B, the lever member 44, which is a separate part separated from the transport portion 40D, is connected to the contact portion 420 of the cover body 41d between the fulcrum (shaft portion) and the force point. If this is done, the operation can be separated except during the opening operation of the transport section 40D, and it can be assumed that the transport operation of the article is not affected.

以上、述べたように、所定の品物を樹脂フィルムで連続的に包装する包装装置について、本発明により、過剰なコストアップを伴うことなく必要に応じて搬送部を開くものとして、生産性の高い包装作業を容易に実現できるようになった。   As described above, with respect to a packaging device that continuously wraps a predetermined product with a resin film, the present invention is highly productive, as it opens the transport unit as needed without excessive cost increase. Packaging work can now be realized easily.

10 搬送路、11 挿入口、21A,21B シャッター板、21a,411,440 当接面、21b レバー部、22,44 レバー部材、30A 溶着切断部、31 スライド体、31a ヒータ板、40A,40B,40C,40D 搬送部、41,42 ローラーコンベヤ、41a,41b,41c カバー部材、45 スライド部材、200,300,350 品物、400,410,420 当接部   DESCRIPTION OF SYMBOLS 10 Conveyance path, 11 Insertion slot, 21A, 21B Shutter plate, 21a, 411, 440 Contact surface, 21b Lever part, 22, 44 Lever member, 30A Weld cutting part, 31 Slide body, 31a Heater plate, 40A, 40B, 40C, 40D Conveying part, 41, 42 Roller conveyor, 41a, 41b, 41c Cover member, 45 Slide member, 200, 300, 350 Product, 400, 410, 420 Contact part

Claims (5)

挿入口と排出口の間に包装対象である品物の搬送路が形成されて、挿入された前記品物を一対のロール体から延出した帯状の樹脂フィルムで両側から挟みながら品物周囲の前記樹脂フィルムを重ねた部分を溶着することで包装を行うものであって、前記搬送路の途中に、前記品物後端側で前記樹脂フィルムを幅方向に溶着して該溶着位置で切断させるためのヒータ板が進退動作可能に配置されてモータの駆動力で前記溶着位置に進行するものとされた溶着切断部と、該溶着切断部の下流側で前記搬送路に沿うように対向配置されて間に挟み込んだ前記品物を下流側に搬送する一対のローラーコンベヤが前記搬送路を開閉可能に配置されてなる搬送部とを備えた包装装置において、
前記ヒータ板はリンクを介し連結された前記モータが正回転駆動することで溶着位置に進行するものとされ、前記一対のローラーコンベヤの少なくとも一方は前記搬送路の開閉方向に可動とされて閉方向に付勢されているとともに前記モータの逆回転駆動により前記搬送部を開く方向に動作するものとされ、所定の状況で前記品物が前記搬送路に挿入されることにより前記モータが逆回転駆動し、閉じていた前記搬送部が少なくとも入口側を開いて前記品物の先端側を受け入れる、ことを特徴とする包装装置。
A transport path for the product to be packaged is formed between the insertion port and the discharge port, and the resin film around the product is sandwiched from both sides by a belt-shaped resin film extending from a pair of rolls. A heater plate for performing packaging by welding the overlapped portions, and for welding the resin film in the width direction on the rear end side of the product in the middle of the transport path and cutting the welded film at the welding position Is disposed so as to be capable of advancing and retracting and is advanced to the welding position by the driving force of the motor, and is disposed oppositely along the conveyance path on the downstream side of the welding and cutting part and sandwiched therebetween. In a packaging device comprising a transport unit in which a pair of roller conveyors for transporting the goods downstream is arranged to be able to open and close the transport path,
The heater plate is moved to the welding position when the motor connected through a link is driven to rotate in the forward direction, and at least one of the pair of roller conveyors is movable in the opening / closing direction of the conveying path and closed. And the motor is operated in the direction to open the conveying portion by reverse rotation driving of the motor, and the motor is driven in reverse rotation when the article is inserted into the conveying path in a predetermined situation. The packaging device is characterized in that the conveying section that has been closed opens at least the inlet side to receive the leading end side of the item.
前記溶着切断部には、所定のスライド体が前記モータの駆動力により前記搬送路の搬送方向に交差する向きで進退動作を行うように配置されており、前記スライド体は、前記モータの正回転駆動による進行動作で前記ヒータ板を前記溶着位置に進行させるとともに、前記モータの逆回転駆動による退行動作で前記一方のローラーコンベヤに付設した部材の一部に当接して押すことにより前記搬送部を開くものとされ、前記進行動作時には前記スライド体が前記部材から離間する、ことを特徴とする請求項1に記載した包装装置。   A predetermined slide body is arranged at the welding and cutting portion so as to advance and retract in a direction intersecting the transport direction of the transport path by the driving force of the motor, and the slide body is rotated forward by the motor. The heater plate is advanced to the welding position by advancing operation by driving, and the conveying portion is moved by abutting and pressing a part of a member attached to the one roller conveyor by a retreating operation by reverse rotation driving of the motor. The packaging apparatus according to claim 1, wherein the slide body is opened and the slide body is separated from the member during the moving operation. 前記スライド体から搬送方向に交差する向きで延設されて前記リンクの一部を構成しているカムロッドの先端側に、前記モータで回動するカムが当接又は連結してカム機構を構成しており、前記モータの正逆回転駆動力が前記カム機構を介して前記スライド体の進退往復動作に変換される、ことを特徴とする請求項2に記載した包装装置。   A cam that is rotated by the motor contacts or is connected to the distal end side of a cam rod that extends from the slide body in a direction crossing the transport direction and forms a part of the link, thereby forming a cam mechanism. The packaging apparatus according to claim 2, wherein a forward / reverse rotational driving force of the motor is converted into an advancing / retreating motion of the slide body via the cam mechanism. 前記溶着切断部の上流側には、先端側を下流側に向けながら前記搬送路を開閉するように軸支されて閉鎖方向に付勢されたシャッター板が設けられており、該シャッター板には、挿入された前記品物がこれを押し開いて通過する際に所定角度以上の開度でONになるスイッチ手段が付設されており、該スイッチ手段のONにより前記モータが逆回転駆動して前記搬送部を開くものとされている、ことを特徴とする請求項1,2または3に記載した包装装置。   On the upstream side of the welding cut portion, a shutter plate that is pivotally supported so as to open and close the conveyance path with the front end side facing the downstream side and biased in the closing direction is provided. In addition, there is provided a switch means that is turned on at an opening of a predetermined angle or more when the inserted article passes through the opening, and when the switch means is turned on, the motor is driven in reverse rotation to carry the transport. The packaging apparatus according to claim 1, 2, or 3, wherein the part is opened. 挿入口と排出口の間に包装対象である品物の搬送路が形成されて、挿入された前記品物を一対のロール体から延出した帯状の樹脂フィルムで両側から挟みながら前記品物周囲の前記樹脂フィルムを重ねた部分を溶着することで包装を行うものであって、前記搬送路の途中に、前記品物後端側で前記樹脂フィルムを幅方向に溶着して該溶着位置で切断させるためのヒータ板が進退動作可能に配置されて前記モータの駆動力で前記溶着位置に進行するものとされた溶着切断部と、該溶着切断部の下流側で搬送路に沿うように対向配置されて間に挟み込んだ前記品物を下流側に搬送する一対のローラーコンベヤが前記搬送路を開閉可能に配置されてなる搬送部とを備えた包装装置において、
前記溶着切断部の上流側で先端側を下流側に向けながら搬送方向に対し傾斜して形成されて前記品物の先端が当接する当接面を所定部分に有して所定位置で軸支されてなるレバー部材が配設されており、所定厚さ以上の前記品物が挿入された場合に、通常は前記搬送路の所定範囲を閉鎖している当接面に、挿入された前記品物の先端が当接して該当接面上を滑りながら前記レバー部材を押し開くことにより、所定部分で前記レバー部材と連結または一体となった一方の前記ローラーコンベヤが持ち上がり、閉じていた前記搬送部が少なくとも上流側部分を開いて前記品物の先端側を受け入れる、ことを特徴とする包装装置。
A conveyance path for the product to be packaged is formed between the insertion port and the discharge port, and the resin around the product is sandwiched from both sides by a strip-shaped resin film extending from a pair of roll bodies. A heater for performing packaging by welding the overlapped portions of the film, and for welding the resin film in the width direction on the rear end side of the product and cutting it at the welding position in the middle of the conveyance path A plate is disposed so as to be capable of advancing and retreating, and is driven to move to the welding position by the driving force of the motor, and is disposed so as to face the conveyance path on the downstream side of the welding and cutting portion. In a packaging apparatus comprising a transport unit in which a pair of roller conveyors that transport the sandwiched product to the downstream side are arranged so that the transport path can be opened and closed,
An abutment surface is formed on the upstream side of the welded cutting portion so as to be inclined with respect to the conveying direction with the front end side facing the downstream side, and has a contact surface with which the front end of the product abuts in a predetermined portion and is pivotally supported at a predetermined position. When the article having a thickness greater than or equal to a predetermined thickness is inserted, the tip of the inserted article is normally placed on the contact surface that closes the predetermined range of the transport path. By pushing and opening the lever member while abutting and sliding on the corresponding contact surface, one of the roller conveyors that is connected to or integrated with the lever member is lifted at a predetermined portion, and the closed conveying section is at least upstream A packaging device, wherein a portion is opened to receive a leading end side of the item.
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