JP4809083B2

JP4809083B2 - Box assembly machine

Info

Publication number: JP4809083B2
Application number: JP2006063245A
Authority: JP
Inventors: 辰也岩本; 和郁中津
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2006-03-08
Filing date: 2006-03-08
Publication date: 2011-11-02
Anticipated expiration: 2026-03-08
Also published as: JP2007237561A

Description

本発明は洗剤用紙箱等の箱組立機に関する。 The present invention relates to a box assembly machine such as a detergent paper box.

洗剤用紙箱等の箱組立機として、特許文献１に記載の如く、箱胴の一端に設けた複数枚の底フラップの接着部を糊剤の介在下で重ね合せて加圧接着するものがある。
特開平8-295317 As a box assembly machine such as a detergent paper box, there is one as described in Patent Document 1 in which adhesive portions of a plurality of bottom flaps provided at one end of a box body are overlapped and bonded under pressure with an adhesive. .
JP-A-8-295317

従来の箱組立機では、複数枚の底フラップの接着部を加圧接着する過程で、電熱ヒータを用いて該接着部を加熱固化している。電熱ヒータによる加熱接着時間は長時間を必要とし、生産性が低い。 In the conventional box assembling machine, in the process of pressure bonding the bonded portions of the plurality of bottom flaps, the bonded portions are heated and solidified using an electric heater. The heat bonding time by the electric heater requires a long time, and the productivity is low.

箱組立機の箱払い出し速度を、箱組立機に後続する箱への内容物充填ラインのライン速度に適合させるように高速化しようとするときには、箱組立機における電熱ヒータの設置ゾーンを長尺化して必要な加熱接着時間を確保する必要があり、箱組立機のライン長が大型になる。箱組立機のライン長が大型になれば、箱を保持して搬送する箱保持具や、箱の底フラップを加圧する加圧具等の設備個数、換言すれば箱品種変更時の型替え交換部品点数が多数になり、型替え時間も長時間になる。 When attempting to increase the box delivery speed of the box assembly machine to match the line speed of the content filling line to the box following the box assembly machine, the installation zone of the electric heater in the box assembly machine should be lengthened. It is necessary to secure the necessary heat bonding time, and the line length of the box assembly machine becomes large. If the line length of the box assembly machine becomes large, the number of equipment such as box holders that hold and transport boxes and pressurizers that pressurize the bottom flaps of boxes, in other words, change molds when changing box types The number of parts becomes large and the mold change time becomes long.

本発明の課題は、箱組立機において、複数枚の底フラップの接着部に対する加熱接着時間を短時間にし、ひいてはライン長を小型にし、型替え時間も短時間にすることにある。 SUMMARY OF THE INVENTION An object of the present invention is to shorten the heat bonding time for the bonding portions of a plurality of bottom flaps in a box assembly machine, and consequently reduce the line length and the mold change time.

請求項１の発明は、箱胴の一端に設けた複数枚の底フラップの接着部を糊剤の介在下で重ね合せて加圧接着する箱組立機であって、前記底フラップの接着部を加圧接着する過程で該接着部を高周波誘電加熱するものであり、前記複数枚の重ね合せ状態にある底フラップを高周波誘電加熱装置の加熱板の上に載せ、それら底フラップの上に載る加圧具によりそれら底フラップの接着部を該加熱板に対し挟圧可能にし、前記加圧具が複数の互いに独立的に作動する加圧ピンのそれぞれにより、複数枚の底フラップの接着部の各点のそれぞれを前記高周波誘電加熱装置の加熱板に対し別個独立に挟圧して加圧接着可能にするようにしたものである。 The invention of claim 1 is a box assembly machine for pressure bonding by adhering the adhesive portions of a plurality of bottom flaps provided at one end of a box cylinder in the presence of a glue, and attaching the adhesive portions of the bottom flaps. The bonded portion is subjected to high-frequency dielectric heating in the process of pressure bonding, and the plurality of stacked bottom flaps are placed on a heating plate of a high-frequency dielectric heating device, and the additional flaps placed on the bottom flaps are placed. The adhesive part of the bottom flaps can be clamped to the heating plate by a pressure tool, and each of the adhesive parts of the plurality of bottom flaps is respectively provided by a plurality of pressure pins that the pressure tool operates independently of each other. Each of the points is separately and independently pressed against the heating plate of the high-frequency dielectric heating device so as to enable pressure bonding .

箱組立機１０は、洗剤用等の紙箱１を製作するため、図８に示す如く、四角筒状の箱胴２の各胴板２Ａ〜２Ｄの一端に設けた４枚の底フラップ３Ａ〜３Ｄを折り込み、それらの底フラップ３Ａ〜３Ｄを糊剤の介在下で重ね合せて加圧接着し、底３を形成するものである。 As shown in FIG. 8, the box assembling machine 10 produces four bottom flaps 3A to 3D provided at one end of each of the body plates 2A to 2D of the square cylindrical box body 2 in order to produce the paper box 1 for detergent. Is folded, and the bottom flaps 3A to 3D are overlapped with each other in the presence of a paste and pressure-bonded to form the bottom 3.

箱組立機１０は、図１、図２に示す如く、カートンマガジン１１、カートン横送り装置１２、カートン搬送装置１３、糊付装置１４、加圧装置１５、高周波誘電加熱装置１６を有する。 As shown in FIGS. 1 and 2, the box assembling machine 10 includes a carton magazine 11, a carton lateral feed device 12, a carton conveying device 13, a gluing device 14, a pressurizing device 15, and a high-frequency dielectric heating device 16.

カートンマガジン１１は折りたたみ状態の多数の箱１を積層して収容し、この箱１をカートン横送り装置１２に供給可能にする。 The carton magazine 11 stacks and accommodates a number of folded boxes 1 so that the boxes 1 can be supplied to the carton lateral feed device 12.

カートン横送り装置１２はカートンマガジン１１から供給された折りたたみ状態の箱１を四角筒状に折り起こし、この箱１をカートン搬送装置１３に供給可能にする。 The carton transverse feed device 12 folds the folded box 1 supplied from the carton magazine 11 into a square cylinder shape, and enables the box 1 to be supplied to the carton conveying device 13.

カートン搬送装置１３は駆動車２１と従動車２２に無端周回状の搬送チェーン２３を移動可能に巻掛け、搬送チェーン２３上の一定間隔を介する複数位置に箱保持具としてのカートンバケット２４を備える。カートンバケット２４は箱１の各品種の四角筒断面サイズに応ずるようにその把持アームを拡縮し、箱１の箱胴２を把持する。カートン搬送装置１３はカートンバケット２４に把持した箱１を搬送チェーン２３の移動により、カートン搬送装置１３の搬送経路に沿って連続搬送（間欠停止搬送でも可）する。 The carton transfer device 13 is wound around a drive wheel 21 and a driven vehicle 22 so as to be movable, and includes carton buckets 24 as box holders at a plurality of positions on the transfer chain 23 with a predetermined interval. The carton bucket 24 expands and contracts its gripping arm so as to correspond to the cross-sectional size of the square cylinder of each type of the box 1, and grips the box body 2 of the box 1. The carton transport device 13 continuously transports the box 1 gripped by the carton bucket 24 along the transport path of the carton transport device 13 by the movement of the transport chain 23 (intermittent stop transport is also possible).

糊付装置１４はカートン搬送装置１３により搬送される箱１の下方に配置される糊付ローラ１４Ａを有する。カートン搬送装置１３の搬送経路において、糊付ローラ１４Ａの上流側には内フラップ折り込み装置１４Ｂを設け、糊付ローラ１４Ａの下流側には外フラップ折り込み装置１４Ｃを設ける。内フラップ折り込み装置１４Ｂは、糊付ローラ１４Ａの上流側で、カートン搬送装置１３のカートンバケット２４に把持されている箱１の内フラップたる底フラップ３Ａ、３Ｂを、それらが底３を形成する打ち抜き位置に折り込む。糊付ローラ１４Ａは、内フラップ折り込み装置１４Ｂにより打抜き位置に折り込まれた底フラップ３Ａ、３Ｂの外側面（図２の下向き面）と、外向きに拡開されている底フラップ３Ｃ、３Ｄの外側面（図２の下向き面）が糊付ローラ１４Ａの直上を通過するときに、それら底フラップ３Ａ、３Ｂ、３Ｃ、３Ｄの外側面に接着剤を塗工する。外フラップ折り込み装置１４Ｃは、糊付ローラ１４Ａの下流側で、カートン搬送装置１３のカートンバケット２４に把持されている箱１の外フラップたる底フラップ３Ｃ、３Ｄを、それらが底３を形成する打抜き位置に折り込み、結果として底フラップ３Ｃ、３Ｄの上述した糊付面を底フラップ３Ａ、３Ｂの上述した糊付面に重ね合せる。 The gluing device 14 has a gluing roller 14 A disposed below the box 1 conveyed by the carton conveying device 13. In the conveying path of the carton conveying device 13, an inner flap folding device 14B is provided on the upstream side of the gluing roller 14A, and an outer flap folding device 14C is provided on the downstream side of the gluing roller 14A. The inner flap folding device 14B is formed by punching the bottom flaps 3A and 3B as the inner flaps of the box 1 held by the carton bucket 24 of the carton conveying device 13 on the upstream side of the glue roller 14A. Fold it into position. The glued roller 14A includes an outer surface of the bottom flaps 3A and 3B (downward surface in FIG. 2) folded into the punching position by the inner flap folding device 14B, and an outside of the bottom flaps 3C and 3D that are spread outward. When the side surface (the downward surface in FIG. 2) passes directly above the glue roller 14A, an adhesive is applied to the outer surfaces of the bottom flaps 3A, 3B, 3C, and 3D. The outer flap folding device 14C is formed by punching the bottom flaps 3C and 3D which are the outer flaps of the box 1 held by the carton bucket 24 of the carton conveying device 13 on the downstream side of the pasting roller 14A. As a result, the above-mentioned glued surfaces of the bottom flaps 3C, 3D are overlapped with the above-mentioned glued surfaces of the bottom flaps 3A, 3B.

加圧装置１５はカートン搬送装置１３の搬送チェーン２３上で一定間隔を介する複数位置に加圧具３０を備える。各加圧具３０は前述の各カートンバケット２４に上下で対をなすように、各カートンバケット２４の上方に配置され、各カートンバケット２４とともに同期して移動する。 The pressurizing device 15 includes pressurizing tools 30 at a plurality of positions on the transport chain 23 of the carton transport device 13 through a predetermined interval. Each pressurizing tool 30 is disposed above each carton bucket 24 so as to make a pair with each carton bucket 24 described above, and moves in synchronization with each carton bucket 24.

加圧具３０は搬送チェーン２３に支持されている不図示の昇降装置に支持され、上昇原位置から下降したとき、カートンバケット２４に把持されている箱１の箱胴２の中に挿入され（図３）、高周波誘電加熱装置１６の後述する加熱板４１との間で箱１の前述した如くに糊付けされて重ね合せ状態にある４枚の底フラップ３Ａ〜３Ｄの接着部を加圧し接着する。 The pressurizing tool 30 is supported by an elevating device (not shown) supported by the transport chain 23 and is inserted into the box body 2 of the box 1 held by the carton bucket 24 when the pressurizing tool 30 is lowered from the raised original position ( 3), the adhesive portions of the four bottom flaps 3A to 3D that are glued as described above of the box 1 and overlapped with the heating plate 41 described later of the high-frequency dielectric heating device 16 are pressed and bonded. .

加圧具３０は、図３、図４に示す如く、不図示の昇降装置に支持されて昇降せしめられる加圧フレーム３１に複数の加圧ピン３２を並列的に支持し、各加圧ピン３２のそれぞれに設けた弾発体たるコイルばね３３により当該加圧ピン３２を加圧フレーム３１から突出する方向に弾発的に支持する。加圧フレーム３１は、上ベース板３１Ａと下ベース板３１Ｂを連結金具３１Ｃにより上下に連結し、それらベース板３１Ａ、３１Ｂに設けた複数の上下同軸孔３４Ａ、３４Ｂに各加圧ピン３２の上部ピン３２Ａと下部ピン３２Ｂを上下摺動可能に挿通する。加圧ピン３２は上部ピン３２Ａと下部ピン３２Ｂの中間にフランジ状ストッパ３２Ｃを備え、上ベース板３１Ａの下面とストッパ３２Ｃとの間の上部ピン３２Ａまわりにコイルばね３３を設け、コイルばね３３の弾発力でストッパ３２Ｃが下ベース板３１Ｂの上面に当たる突出限まで加圧ピン３２を下ベース板３１Ｂから突出する方向に弾発的に支持する。加圧ピン３２は下部ピン３２Ｂの先端加圧面３２Ｄを平面としている。但し、加圧面３２Ｄは球面等であっても良い。 As shown in FIGS. 3 and 4, the pressurizing tool 30 supports a plurality of pressurizing pins 32 in parallel on a pressurizing frame 31 supported by an elevating device (not shown) and lifted and lowered. The pressure pin 32 is elastically supported in a direction protruding from the pressure frame 31 by a coil spring 33 which is a bullet body provided in each of the above. In the pressure frame 31, an upper base plate 31A and a lower base plate 31B are vertically connected by a connecting bracket 31C, and the upper portions of the pressure pins 32 are inserted into a plurality of upper and lower coaxial holes 34A and 34B provided in the base plates 31A and 31B. The pin 32A and the lower pin 32B are inserted so as to be vertically slidable. The pressure pin 32 includes a flange-like stopper 32C between the upper pin 32A and the lower pin 32B. A coil spring 33 is provided around the upper pin 32A between the lower surface of the upper base plate 31A and the stopper 32C. The pressing pin 32 is elastically supported in the direction of protruding from the lower base plate 31B to the limit of protrusion where the stopper 32C hits the upper surface of the lower base plate 31B by elastic force. The pressure pin 32 has a flat surface at the tip pressure surface 32D of the lower pin 32B. However, the pressing surface 32D may be a spherical surface or the like.

即ち、加圧具３０は、複数の互いに独立的に上下動して作動する各加圧ピン３２により、底フラップ３Ａ〜３Ｄの接着部の各点４（図４）のそれぞれを加圧する。図５（Ａ）は、加圧ピン３２のストッパ３２Ｃが下ベース板３１Ｂの上面に当っていて底フラップ３Ａ〜３Ｄの接着部に加圧力を及ぼしていない自由状態を示す。図５（Ｂ）は、底フラップ３Ａ〜３Ｄの接着部の上に載ってそれらの各点４に当った加圧ピン３２が加圧フレーム３１内に押し込まれ、加圧ピン３２のストッパ３２Ｃが下ベース板３１Ｂの上面から離隔し、これによって圧縮されるコイルばね３３の弾発力に基づく加圧力がそれら底フラップ３Ａ〜３Ｄの接着部の各点４に付与せしめられる加圧状態を示す。 That is, the pressurizing tool 30 pressurizes each of the points 4 (FIG. 4) of the bonded portions of the bottom flaps 3A to 3D by a plurality of pressurizing pins 32 that operate by moving up and down independently of each other. FIG. 5A shows a free state in which the stopper 32C of the pressure pin 32 is in contact with the upper surface of the lower base plate 31B and does not apply pressure to the bonded portions of the bottom flaps 3A to 3D. In FIG. 5B, the pressure pin 32 placed on the adhesive portion of the bottom flaps 3A to 3D and hitting each point 4 is pushed into the pressure frame 31, and the stopper 32C of the pressure pin 32 is moved. A pressing state is shown in which a pressing force based on the elastic force of the coil spring 33 that is separated from the upper surface of the lower base plate 31B and compressed thereby is applied to each point 4 of the bonded portion of the bottom flaps 3A to 3D.

加圧具３０は、上記加圧具以外にも種々の形態のものが利用できる。例えば、一例として、箱体への接触部が平面プレート状になった加圧具３０が挙げられる。 The pressurizing tool 30 can have various forms other than the pressurizing tool. For example, the pressurizing tool 30 in which the contact portion to the box is a flat plate shape can be given as an example.

高周波誘電加熱装置１６は、カートン搬送装置１３により搬送されている箱１の下方に配置される。高周波誘電加熱装置１６は、図６に示す如く、加熱板４１の下側内部に複数組の電極対４２Ａ、４２Ｂを設け、発振器４３により各電極対４２Ａ、４２Ｂの間に高周波電圧を印加し、加熱板４１上を通過する底フラップ３Ａ〜３Ｄの接着部を高周波誘電加熱して接着する。 The high frequency dielectric heating device 16 is disposed below the box 1 being transported by the carton transport device 13. As shown in FIG. 6, the high frequency dielectric heating device 16 is provided with a plurality of electrode pairs 42A and 42B inside the heating plate 41, and an oscillator 43 applies a high frequency voltage between the electrode pairs 42A and 42B. The bonded portions of the bottom flaps 3A to 3D passing over the heating plate 41 are bonded by high-frequency dielectric heating.

高周波誘電加熱装置１６は、カートン搬送装置１３のカートンバケット２４に把持されている箱１の前述した如くに糊付けされて重ね合せ状態にある４枚の底フラップ３Ａ〜３Ｄを、加熱板４１の上に載せ、本実施例では摺接する如くに載せて通過させつつ、底フラップ３Ａ〜３Ｄの接着部を高周波誘電加熱して接着する。このとき、箱１の箱胴２内に前述の如くに挿入されてそれら底フラップ３Ａ〜３Ｄの接着部の上に載っている加圧具３０の各加圧ピン３２により、それら接着部の各点４を加熱板４１に対し挟圧する。即ち、高周波誘電加熱装置１６は、加圧装置１５の加圧具３０が底フラップ３Ａ〜３Ｄの接着部を加圧接着する過程で、該接着部を高周波誘電加熱して接着固化せしめる。 The high-frequency dielectric heating device 16 attaches the four bottom flaps 3A to 3D that are glued as described above to the box 1 held by the carton bucket 24 of the carton conveying device 13 in an overlapping state on the heating plate 41. In this embodiment, the adhesive portions of the bottom flaps 3A to 3D are bonded by high-frequency dielectric heating while being mounted so as to be in sliding contact with each other and passing therethrough. At this time, each of the bonding parts is inserted into the box body 2 of the box 1 as described above by the pressing pins 32 of the pressing tool 30 placed on the bonding parts of the bottom flaps 3A to 3D. The point 4 is pressed against the heating plate 41. In other words, the high-frequency dielectric heating device 16 heats and bonds the bonded portions by high-frequency dielectric heating in the process in which the pressure tool 30 of the pressure device 15 press-bonds the bonded portions of the bottom flaps 3A to 3D.

高周波誘電加熱装置１６は、底フラップ３Ａ〜３Ｄの接着部を急速加熱し、加圧具３０を用いた短い加熱接着時間で底フラップ３Ａ〜３Ｄの接着部に高い接着強度（剥離強度）得ることができる。図７は、高周波誘電加熱Ａ、電熱ヒータによる200℃加熱Ｂ、電熱ヒータによる100℃加熱Ｃ、常温接着Ｄのそれぞれについて、加圧具３０を伴なう加熱接着時間ｔと底フラップ３Ａ〜３Ｄの接着部の剥離強度ｆを調査した実験結果である。加圧具３０による加圧力と、底フラップ３Ａ〜３Ｄの接着部の糊厚みは実機相当とした。Ａによれば、底フラップ３Ａ〜３Ｄの復元習性に基づく反発力ｆ0に比して格段に高い接着強度を短い加熱時間で得ることができる。尚、即時の剥離状態について、Ａは底フラップ３Ａ〜３Ｄのフラップ内層で層間剥離したのに対し、Ｂ〜Ｄは底フラップ３Ａ〜３Ｄのフラップ間で界面剥離した。 The high-frequency dielectric heating device 16 rapidly heats the bonded portions of the bottom flaps 3A to 3D, and obtains high bonding strength (peel strength) at the bonded portions of the bottom flaps 3A to 3D in a short heating bonding time using the pressurizer 30. Can do. FIG. 7 shows the high temperature dielectric heating A, 200 ° C. heating B by an electric heater, 100 ° C. heating C by an electric heater, and room temperature bonding D, and the heat bonding time t with the pressing tool 30 and the bottom flaps 3A to 3D. It is the experimental result which investigated the peeling strength f of the adhesion part. The pressure applied by the pressurizing tool 30 and the adhesive thickness of the bonded portions of the bottom flaps 3A to 3D were equivalent to the actual machine. According to A, an extremely high adhesive strength can be obtained in a short heating time as compared with the repulsive force f0 based on the restoring behavior of the bottom flaps 3A to 3D. In addition, about the immediate peeling state, A peeled between the inner layers of the flaps of the bottom flaps 3A to 3D, whereas B to D peeled off at the interface between the flaps of the bottom flaps 3A to 3D.

尚、箱組立機１０にあっては、箱１の底フラップ３Ａ〜３Ｄに接する加圧具３０の加圧ピン３２、高周波誘電加熱装置１６の加熱板４１を樹脂にて構成し、高周波の影響による自己発熱、過電流によるスパークを防止することが好ましい。 In the box assembly machine 10, the pressure pin 32 of the pressure tool 30 and the heating plate 41 of the high-frequency dielectric heating device 16 that are in contact with the bottom flaps 3A to 3D of the box 1 are made of resin, and the influence of high-frequency waves. It is preferable to prevent self-heating and sparks due to overcurrent.

従って、箱組立機１０による箱１の製作手順は以下の如くになる。
(1)折りたたみ状態の箱１をカートンマガジン１１からカートン横送り装置１２に供給し、カートン横送り装置１２で四角筒状に折り起こされた箱１をカートン搬送装置１３のいずれかのカートンバケット２４に供給して把持させる。 Therefore, the manufacturing procedure of the box 1 by the box assembly machine 10 is as follows.
(1) The folded box 1 is supplied from the carton magazine 11 to the carton lateral feed device 12, and the carton bucket 24 of any one of the carton transport devices 13 in which the box 1 is folded into a square cylinder by the carton lateral feed device 12. To be gripped.

(2)カートン搬送装置１３のカートンバケット２４に把持した箱１を内フラップ折り込み装置１４Ｂ経由で糊付ローラ１４Ａに通し、内フラップ折り込み装置１４Ｂにより内向き位置に折り込まれた箱１の内フラップたる底フラップ３Ａ、３Ｂの外側面と、外向きに拡開されている底フラップ３Ｃ、３Ｄの外側面に糊付けする。 (2) The box 1 gripped by the carton bucket 24 of the carton transport device 13 is passed through the inner flap folding device 14B through the gluing roller 14A, and the inner flap of the box 1 folded inward by the inner flap folding device 14B. Gluing is performed on the outer surfaces of the bottom flaps 3A and 3B and the outer surfaces of the bottom flaps 3C and 3D that are spread outward.

(3)カートン搬送装置１３のカートンバケット２４に把持している箱１の外フラップたる底フラップ３Ｃ、３Ｄを外フラップ折り込み装置１４Ｃにより内向き位置に折り込み、底フラップ３Ｃ、３Ｄの糊付面を底フラップ３Ａ、３Ｂの糊付面に重ね合せる。 (3) The bottom flaps 3C and 3D, which are the outer flaps of the box 1 held by the carton bucket 24 of the carton conveying device 13, are folded inward by the outer flap folding device 14C, and the glued surfaces of the bottom flaps 3C and 3D are attached. Overlay the glued surfaces of the bottom flaps 3A, 3B.

(4)カートン搬送装置１３のカートンバケット２４に把持されている箱１の箱胴２内に加圧装置１５の加圧具３０を挿入し、各加圧ピン３２により底フラップ３Ａ〜３Ｄの重ね合せ状態にある接着部の各点４のそれぞれを加圧する。 (4) The pressurizing tool 30 of the pressurizing device 15 is inserted into the box body 2 of the box 1 held by the carton bucket 24 of the carton conveying device 13, and the bottom flaps 3A to 3D are overlapped by the pressurizing pins 32. Each point 4 of the bonded portion in the aligned state is pressurized.

(5)カートン搬送装置１３により搬送されて高周波誘電加熱装置１６の加熱板４１上を通過する底フラップ３Ａ〜３Ｄの接着部を高周波誘電加熱する。このとき、上述(4)の加圧具３０の各加圧ピン３２により、底フラップ３Ａ〜３Ｄの接着部の各点４を加熱板４１に対し挟圧し、該接着部を加圧接着固化せしめる。 (5) The adhesive portions of the bottom flaps 3A to 3D that are transported by the carton transport device 13 and pass over the heating plate 41 of the high-frequency dielectric heating device 16 are subjected to high-frequency dielectric heating. At this time, each point 4 of the bonded portion of the bottom flaps 3A to 3D is pressed against the heating plate 41 by the pressure pins 32 of the pressure tool 30 described in (4) above, and the bonded portion is pressed and solidified. .

(6)カートン搬送装置１３のカートンバケット２４から箱１を解放し、箱１を後続する内容物充填ライン等に向けて払い出す。 (6) The box 1 is released from the carton bucket 24 of the carton conveying device 13, and the box 1 is discharged toward the subsequent content filling line or the like.

本実施例によれば以下の作用効果を奏する。
(a)箱組立機１０において、箱１の複数枚の底フラップ３Ａ〜３Ｄの接着部を加圧接着する過程で、高周波誘電加熱を用いて該接着部を加熱固化するようにしたから、加熱接着時間を短時間にし、生産性を向上できる。 According to the present embodiment, the following operational effects can be obtained.
(a) In the box assembly machine 10, in the process of pressure bonding the bonded portions of the plurality of bottom flaps 3A to 3D of the box 1, the bonded portions are heated and solidified using high frequency dielectric heating. The bonding time can be shortened to improve productivity.

箱組立機１０の箱払い出し速度を、箱組立機１０に後続する箱１への内容物充填ライン速度に適合させるように高速化するに際し、箱組立機１０における加熱装置１６の設置ゾーンを長尺化して必要な加熱接着時間を確保する必要の如くがなく、箱組立機１０のライン長を小型にできる。箱組立機１０のライン長を小型にできるから、箱１を保持して搬送するカートンバケット２４や、箱１の底フラップ３Ａ〜３Ｄを加圧する加圧具３０等の設備個数、換言すれば箱品種変更時の型替え交換部品点数は少数で足り、型替え時間も短時間になる。 When the box delivery speed of the box assembly machine 10 is increased so as to match the content filling line speed of the box 1 subsequent to the box assembly machine 10, the installation zone of the heating device 16 in the box assembly machine 10 is elongated. The line length of the box assembly machine 10 can be reduced in size because there is no need to secure the necessary heat bonding time. Since the line length of the box assembling machine 10 can be reduced, the number of equipment such as the carton bucket 24 that holds and transports the box 1 and the pressurizing tool 30 that pressurizes the bottom flaps 3A to 3D of the box 1, in other words, the box The number of replacement parts for changing models is small, and the time required for changing molds is short.

(b)複数枚の重ね合せ状態にある底フラップ３Ａ〜３Ｄを高周波誘電加熱装置１６の加熱板４１の上に載せ、それら底フラップ３Ａ〜３Ｄの上に載る加圧具３０によりそれら底フラップ３Ａ〜３Ｄの接着部を加熱板４１に対し挟圧することにより、底フラップ３Ａ〜３Ｄの接着部を確実に高周波誘電加熱し、加圧接着効率を向上できる。 (b) A plurality of the bottom flaps 3A to 3D in a superposed state are placed on the heating plate 41 of the high-frequency dielectric heating device 16, and the bottom flaps 3A are applied by the pressurizer 30 placed on the bottom flaps 3A to 3D. By squeezing the ~ 3D adhesive part against the heating plate 41, the adhesive part of the bottom flaps 3A to 3D can be reliably subjected to high-frequency dielectric heating, and the pressure adhesive efficiency can be improved.

(c)高周波誘電加熱装置１６の加熱板４１の内部に高周波発振器４３を組み込んだ状態で、加熱板４１と加圧具３０の底フラップ３Ａ〜３Ｄに接する部分を樹脂にて構成した。従って、高周波発振器４３の近くに金属製の加熱板や加圧具の存在がなく、加圧具３０が加熱板４１との間で底フラップ３Ａ〜３Ｄを連続的に加圧しても、高周波の影響による自己発熱を低減し、かつ過電流でスパークする等を防止できる。 (c) In a state where the high frequency oscillator 43 is incorporated in the heating plate 41 of the high frequency dielectric heating device 16, the portion in contact with the heating plate 41 and the bottom flaps 3 A to 3 D of the pressurizing tool 30 is made of resin. Accordingly, there is no metal heating plate or pressurizing tool near the high-frequency oscillator 43, and even if the pressurizing tool 30 continuously pressurizes the bottom flaps 3A to 3D with the heating plate 41, the high-frequency oscillator 43 Self-heating due to influence can be reduced, and sparking due to overcurrent can be prevented.

また、本発明によれば以下の作用効果を奏する。
(a)箱組立機１０において、加圧具３０が複数の互いに独立的に作動する加圧ピン３２により、底フラップ３Ａ〜３Ｄの接着部の各点４のそれぞれを加圧可能にした。従って、底フラップ３Ａ〜３Ｄの接着部の範囲内にある各点４の表面の凹凸、各点４の厚みの差があっても、それら各点４のそれぞれに対応する加圧ピン３２が他の加圧ピン３２とは独立的に各点４のそれぞれをくまなく一定の加圧力で加圧する。 Moreover, according to this invention, there exist the following effects.
(a) In the box assembling machine 10, each of the points 4 of the bonded portions of the bottom flaps 3 A to 3 D can be pressurized by a plurality of pressurizing pins 32 in which the pressurizing tool 30 operates independently of each other. Therefore, even if there is unevenness on the surface of each point 4 within the range of the adhesive portions of the bottom flaps 3A to 3D and there is a difference in the thickness of each point 4, there are other pressure pins 32 corresponding to each of those points 4. Independently of the pressure pin 32, each point 4 is pressurized with a constant pressure throughout.

箱品種変更時にも、各加圧ピン３２は何ら調整を必要とすることなく、底フラップ３Ａ〜３Ｄの接着部の範囲内にある各点４のそれぞれをくまなく一体の加圧力で加圧でき、型替え時間は短時間で足りる。 Even when the box type is changed, each of the pressure pins 32 can be pressurized with an integrated pressure all over each point 4 within the bonded area of the bottom flaps 3A to 3D without any adjustment. The mold change time is short.

(b)加圧具３０が、加圧フレーム３１に複数の加圧ピン３２を並列的に支持し、各加圧ピン３２のそれぞれに設けたコイルばね３３により当該加圧ピン３２を加圧フレーム３１から突出する方向に弾発的に支持するようにしたから、簡易な構成により、底フラップ３Ａ〜３Ｄの接着部の範囲内にある各点４のそれぞれを、各加圧ピン３２によりくまなく、各コイルばね３３が付与する一定の加圧力で加圧できる。 (b) The pressurizing tool 30 supports a plurality of pressurizing pins 32 in parallel on the pressurizing frame 31, and the pressurizing pins 32 are pressed by the coil springs 33 provided on the respective pressurizing pins 32. Since it is elastically supported in the direction protruding from 31, each point 4 within the range of the bonded portion of the bottom flaps 3 A to 3 D is covered by each pressure pin 32 with a simple configuration. , Each coil spring 33 can be pressurized with a constant applied pressure.

尚、本発明に用いられる加圧具３０は、図３〜図５に示したものに限らず、図９に示した如くの加圧具１００であっても良い。加圧具１００は、紙箱１の底フラップ３Ａ〜３Ｄの接着部の各部に当接する２枚以上の平面プレート状の加圧板１０１を有し、各加圧板１０１は弾発体たるコイルばね１０２によりバックアップ支持され、各加圧板１０１の板厚を、底フラップ３Ａ〜３Ｄの接着部の範囲内にある各部の表面の凹凸、各部の厚みの差に応ずる板厚に調整して用いることができる。 The pressurizing tool 30 used in the present invention is not limited to that shown in FIGS. 3 to 5 but may be a pressurizing tool 100 as shown in FIG. The pressurizing tool 100 has two or more flat plate-like pressurizing plates 101 that come into contact with respective portions of the adhesive portions of the bottom flaps 3A to 3D of the paper box 1, and each pressurizing plate 101 is formed by a coil spring 102 that is an elastic body. It is supported by backup, and the plate thickness of each pressure plate 101 can be adjusted and used to the plate thickness corresponding to the unevenness of the surface of each part within the range of the adhesive part of the bottom flaps 3A to 3D and the difference in thickness of each part.

図１は箱組立機の全体ラインを示す模式平面図である。FIG. 1 is a schematic plan view showing an entire line of a box assembly machine. 図２は箱組立機を示す模式斜視図である。FIG. 2 is a schematic perspective view showing the box assembly machine. 図３は加圧具を挿入した箱を破断して示す斜視図である。FIG. 3 is a perspective view showing a box in which a pressurizing tool is inserted in a broken state. 図４は加圧具の加圧ピンによる底フラップの加圧点を示す平面図である。FIG. 4 is a plan view showing the pressing point of the bottom flap by the pressing pin of the pressing tool. 図５は加圧具を示し、（Ａ）は自由状態の断面図、（Ｂ）は加圧状態の断面図である。FIG. 5 shows a pressurizing tool, (A) is a sectional view in a free state, and (B) is a sectional view in a pressurized state. 図６は高周波誘電加熱装置を示す模式断面図である。FIG. 6 is a schematic cross-sectional view showing a high-frequency dielectric heating device. 図７は加熱接着時間と接着強度を示す線図である。FIG. 7 is a diagram showing the heat bonding time and the bonding strength. 図８は紙箱を示し、（Ａ）は組立前状態を示す模式斜視図、（Ｂ）は組立後状態を示す模式斜視図である。FIG. 8 shows a paper box, (A) is a schematic perspective view showing a state before assembly, and (B) is a schematic perspective view showing a state after assembly. 図９は加圧具の変形例を示す斜視図である。FIG. 9 is a perspective view showing a modification of the pressurizing tool.

Explanation of symbols

１紙箱
２箱胴
３Ａ〜３Ｄ底フラップ
１０箱組立機
１６高周波誘電加熱装置
３０、１００加圧具
４１加熱板 DESCRIPTION OF SYMBOLS 1 Paper box 2 Box body 3A-3D Bottom flap 10 Box assembly machine 16 High frequency dielectric heating apparatus 30 and 100 Pressurizing tool 41 Heating plate

Claims

A box assembly machine for pressure bonding by bonding the adhesive portions of a plurality of bottom flaps provided at one end of a box cylinder under the presence of a paste,
In the process of pressure-bonding the adhesive part of the bottom flap, the adhesive part is subjected to high-frequency dielectric heating ,
The multiple bottom flaps placed on top of each other can be placed on the heating plate of a high frequency dielectric heating device, and the adhesive part of these bottom flaps can be clamped against the heating plate by a pressure tool placed on the bottom flap. West,
Each of the points of the adhesive portions of the plurality of bottom flaps is separately and separately clamped against the heating plate of the high-frequency dielectric heating device by each of a plurality of pressure pins on which the pressure tool operates independently of each other. Box assembly machine that enables pressure bonding .

The box assembly machine according to claim 1 , wherein a portion in contact with the heating plate and a bottom flap of the pressurizing tool is made of resin.

The pressurizing tool has a plurality of pressurizing pins that operate independently from each other on the pressurizing frame, and the elastic pin provided in each pressurizing pin elastically projects the pressurizing pin from the pressurizing frame. box assembly machine as claimed in claim 1 or 2 which is pressurized applying member for supporting the voluntarily.