JPS6149169B2

JPS6149169B2 -

Info

Publication number: JPS6149169B2
Application number: JP4570480A
Authority: JP
Inventors: Takayoshi Kajita; Kenji Komoda
Original assignee: Sumitomo Heavy Industries Ltd
Current assignee: Sumitomo Heavy Industries Ltd
Priority date: 1980-04-09
Filing date: 1980-04-09
Publication date: 1986-10-28
Also published as: JPS56151631A

Description

【発明の詳細な説明】（産業上の利用分野）本発明は袋口開閉装置たとえば粉粒体の袋詰機
に関するものである。さらに詳しく言えば一定量
の粉粒体を連続的にあるいは断続的に袋詰めする
自動または半自動袋詰機等に於いて、一定量の粉
粒体を投入する袋の口部を開口し、また投入後の
袋の口部を閉鎖及び圧縮する装置に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a bag opening/closing device, such as a bagging machine for powder and granular materials. More specifically, in an automatic or semi-automatic bagging machine that bags a fixed amount of powder or granular material continuously or intermittently, the opening of the bag into which a fixed amount of powder or granular material is introduced is opened, and This relates to a device that closes and compresses the mouth of a bag after it has been loaded.

（従来技術）従来公知の袋詰機に於いて、本発明と対比し得
る類似なものはない。公知の袋詰機に於いては、
空袋のシユート投入口への装着、袋の口部の開口
及び粉粒体の投入後の口部の閉鎖、圧着に対して
はそれぞれ個別の機構を設けていた。(Prior Art) There is no similar bagging machine known in the art that can be compared with the present invention. In known bagging machines,
Separate mechanisms were provided for attaching an empty bag to the chute inlet, opening the mouth of the bag, closing the mouth after loading powder and granular material, and crimping.

例えば第７図に示す袋詰機に於いては、次の工
程を経て袋詰が行われる。 For example, in the bagging machine shown in FIG. 7, bagging is performed through the following steps.

(1) 給袋機ａによつて供給された袋ｂは、 (2) 袋差し装置ｃの吸着盤ｄにより持ちかえられ
た後、 (3) 水平移送機構（袋差しシリンダ）ｅによりシ
ユート投入口ｆの下まで移動し、 (4) シユートｆに設けられた袋留め装置ｇにより
袋の端部を保持され、 (5) 前記袋差し装置ｃ、吸着盤ｄにより開口され
る。(1) The bag b supplied by the bag feeder a is (2) picked up by the suction cup d of the bag feeder c, and (3) fed into the chute by the horizontal transfer mechanism (bag feeder cylinder) e. The bag is moved to below the opening f, (4) the end of the bag is held by a bag clamping device g provided on the chute f, and (5) it is opened by the bag inserting device c and suction cup d.

(6) シユートｆの下部を開口（第８図）して粉粒
体投入後の(4)の袋留め装置ｇにより保持された
まま圧着装置ｈにより袋口部を圧着された後、
次工程（口縫その他）へ渡される。(6) After opening the lower part of the chute f (Fig. 8) and inserting the powder, the bag opening is crimped by the crimping device h while being held by the bag fastening device g in (4).
It is passed on to the next process (sewing etc.).

そしてそれぞれの工程に対応した個別の機構に
よつて構成されている。このため装置が複雑にな
り、組合せは勿論、連係的作動調整、保守点検に
おいて面倒であるなどの不都合があつた。 It is composed of individual mechanisms corresponding to each process. For this reason, the device becomes complicated, and there are disadvantages such as troublesome not only the combination but also the interlocking operation adjustment and maintenance inspection.

（本発明の基礎となる先発明）このため同一出願人は先に従来公知の袋詰機と
異り、袋の移送並びに袋口部の開閉、圧着を一対
のエンドレス状のベルトの回転運動とベルトに設
けられた空気孔を介して、ベルトと袋の間の空気
を吸引して袋をベルトに吸着させることにより袋
の開封を行う袋の開封並びに封止装置について発
明し特許出願した。本発明はこの発明を基本原理
とするものである。以下この基礎発明について第
１図乃至第５図を参照して説明する。(Prior invention that forms the basis of the present invention) For this reason, the same applicant previously proposed that, unlike conventionally known bagging machines, the transport of bags, the opening/closing of the bag mouth, and the crimping are carried out by the rotational movement of a pair of endless belts. He invented and filed a patent application for a bag opening and sealing device that sucks the air between the belt and the bag through air holes provided in the belt and causes the bag to stick to the belt. The present invention is based on this invention as a basic principle. This basic invention will be explained below with reference to FIGS. 1 to 5.

１，１′は袋１３を吸着し移送する移送ベルト
であり、第２図に示す如く袋１３の進行線に対し
平面的にみて対称に設けられる。移送ベルト１，
１′は入口側の案内車２と中間部の案内車３、出
口側の駆動車４及び空気箱５により環状に案内さ
れ、シユート投入口８の下方に当る箇所では袋口
部が開口し、粉粒体を投入できるように配置され
ている。一対の移送ベルト１と１′は前記駆動車
４を介して、駆動装置６により第２図に示す矢印
の方へ駆動され、両者の速度及び位相を同期させ
るための同期機構７が設けられている。 Reference numerals 1 and 1' designate transfer belts that attract and transfer the bags 13, and are provided symmetrically with respect to the traveling line of the bags 13 in plan view, as shown in FIG. Transfer belt 1,
1' is guided in an annular manner by a guide wheel 2 on the entrance side, a guide wheel 3 on the intermediate part, a drive wheel 4 on the exit side, and an air box 5, and the bag opening is opened at a location below the chute input port 8. It is arranged so that powder and granular materials can be input. The pair of transfer belts 1 and 1' are driven by a drive device 6 in the direction of the arrow shown in FIG. 2 via the drive wheel 4, and a synchronization mechanism 7 is provided to synchronize the speed and phase of both. There is.

一方、移送ベルト１，１′には複数個の空気孔
９が、また空気箱５には移送ベルトとの接触面
に、第５図のごとく複数個の空気孔１０がその全
長にわたつてあいており、更に空気箱５の中の空
気は配管部品１１を介して空気吸引ポンプ１２に
より吸引される。なお空気箱５は袋の進行方向の
左右に２個宛計４個装置され、各空気箱には中央
部に袋詰部を形成すべく傾斜壁５ａが設けられて
いる。そして傾斜壁５ａを平面的に対称に配置さ
せることによつて、ほぼ菱形の開封用空間が形成
されるようになつている。 On the other hand, the transfer belts 1 and 1' have a plurality of air holes 9, and the air box 5 has a plurality of air holes 10 along its entire length on the contact surface with the transfer belt, as shown in FIG. Further, the air in the air box 5 is sucked by an air suction pump 12 via a piping part 11. A total of four air boxes 5 are provided, two on the left and right in the direction of travel of the bag, and each air box is provided with an inclined wall 5a in the center to form a bagging section. By arranging the inclined walls 5a symmetrically in a plane, a substantially diamond-shaped opening space is formed.

従つて移送ベルト１，１′の空気孔９と空気箱
の空気孔１０とが重なる様にしておけば空気吸引
ポンプ１２を運転することにより、移送ベルト
１，１′に接触している袋１３は移送ベルト１，
１′に吸着され移送ベルトと共に移送される。 Therefore, if the air holes 9 of the transfer belts 1, 1' are made to overlap the air holes 10 of the air box, by operating the air suction pump 12, the bags 13 in contact with the transfer belts 1, 1' can be removed. is transfer belt 1,
1' and transported together with the transport belt.

（発明の解決しようとする問題点）しかし乍ら袋１３を移送ベルト１，１′に吸着
する際、移送ベルト１，１′と袋１３との接触部
以外の部分の移送ベルトの空気孔９は開放された
ままである。従つてこの開放空気孔からも大気も
吸引することとなると、袋吸着部の吸引力が低下
し、袋の保持が困難になり、袋１３が外れたり、
袋口部の開口が不十分な場合がある。従つてそれ
を回避する為に空気吸引ポンプ１２の容量を増大
させねばならない等の問題が生じてくる。(Problem to be Solved by the Invention) However, when the bag 13 is attracted to the transfer belt 1, 1', the air holes of the transfer belt in the area other than the contact area between the transfer belt 1, 1' and the bag 13 are remains open. Therefore, if the air is also sucked through the open air hole, the suction force of the bag suction section will decrease, making it difficult to hold the bag, and the bag 13 may come off or
The opening of the bag opening may be insufficient. Therefore, in order to avoid this, problems arise, such as the need to increase the capacity of the air suction pump 12.

本発明はこの点を考慮し、空気箱を仕切つて移
送ベルト１，１′の袋吸引部に対応した部分のみ
吸引するようにしようとするものである。 The present invention takes this point into consideration and attempts to partition the air box so that only the portions of the transfer belts 1, 1' corresponding to the bag suction portions are sucked.

（発明による解決手段）袋を搬送するための全面にわたり多数個の貫通
孔が形成された１対のエンドレス移送ベルトを、
その対向する内側の間隔が入側部及び出側部にお
いて平行状態とし、中間部において平面視形状で
菱形状をなすように対設し、前記両エンドレス移
送ベルトの対向側内側に、略全長にわたり前記エ
ンドレス移送ベルトの前記貫通孔を通して空気を
吸引する空気孔を有する空気箱が設置されてお
り、この空気箱は袋搬送方向において複数の小空
気室となるように区画されて構成され、各小空気
室は移送ベルトに同調して回転される所定角度範
囲の連通孔を備えた回転子を有している回転式切
換弁を介して袋搬送方向の順番で吸引ポンプと接
続した。(Solution by the Invention) A pair of endless transfer belts each having a large number of through holes over the entire surface for conveying bags,
The opposing inner sides are parallel to each other at the entry side and the exit side, and are arranged so that they form a diamond shape in a plan view at the middle part, and are provided on the inner sides of the opposite sides of both endless transfer belts over almost the entire length. An air box having air holes for sucking air through the through holes of the endless transfer belt is installed, and this air box is divided into a plurality of small air chambers in the bag conveying direction, and each small The air chamber was connected to the suction pump in the bag conveying direction through a rotary switching valve having a rotor with a communication hole having a predetermined angle range and rotated in synchronization with the conveying belt.

（実施例）第６図及び第１０図に基いて説明する。さて、
第６図で明らかな如く、袋１３の進行方向に対し
左右に対をなした空気箱５，５が設けられ、一対
の空気箱は中央部に袋詰部を形成すべく、菱形の
開封部を形成すべくＶ型凹部を有している。(Example) This will be explained based on FIGS. 6 and 10. Now,
As is clear from FIG. 6, a pair of air boxes 5, 5 are provided on the left and right with respect to the traveling direction of the bag 13, and the pair of air boxes has a diamond-shaped opening portion to form a bagging portion in the center. It has a V-shaped recess to form a .

左右の空気箱５はｎ個の小空気室５′，５″……
…５ⁿに区画されている。一方空気吸引ポンプ１
２の吸入口には回転式切換弁１５を配管１１ａで
接続している。回転式切換弁１５にはｎ個の吸入
口１５′，１５″………１５ⁿが設けられている。
そして小空気室５′と吸入口１５′は配管１１′
で、又小空気室５″と吸入口１５″は配管１１″で
接続され、以下同様に接続されている。回転式切
換弁１５内には回転子１６があつて、この回転子
は別の同調機構（図示せず）により、移送ベルト
１，１′と同調して回転する。そして回転子１６
の回転子と共に切換弁の吸入口が順次１５′，１
５″………１５ⁿと切換えられ、袋の吸着位置も小
空気室５′，５″………５ⁿと袋１３の移動に同調
して順次切換えられる。なお、開封部においては
同時に６〜７個の小空気室が吸引ポンプ１２に連
通し、袋１３が吸引されるよう制御される。従つ
て袋吸着部以外からの大気吸入が防がれる。 The left and right air boxes 5 have n small air chambers 5', 5''...
…Divided into 5 ⁿ sections. On the other hand, air suction pump 1
A rotary switching valve 15 is connected to the intake port of No. 2 through a pipe 11a. The rotary switching valve 15 is provided with n intake ports 15', 15''... ¹⁵ⁿ .
The small air chamber 5' and the suction port 15' are connected to the piping 11'.
The small air chamber 5'' and the suction port 15'' are connected by a pipe 11'', and so on.A rotor 16 is located inside the rotary switching valve 15, and this rotor is connected to another The rotor 16 rotates in synchronization with the transfer belts 1 and 1' by a synchronization mechanism (not shown).
The intake port of the switching valve and the rotor are sequentially 15', 1
5''... ¹⁵ⁿ , and the suction position of the bag is also sequentially changed in synchronization with the movement of the small air chambers 5', 5''... ⁵ⁿ and the bag 13. In addition, in the unsealing section, six to seven small air chambers are communicated with the suction pump 12 at the same time, and the bag 13 is controlled so as to be suctioned. Therefore, air intake from other than the bag suction section is prevented.

（作動）この発明の袋詰機は以上のような構成であつ
て、人力あるいは別に設けた自動給袋機により袋
１３が本装置に供給されたのちは自動的に開封並
びに封止が行われる。以下第６図を参照して本装
置の作動について説明する。(Operation) The bagging machine of the present invention has the above-described configuration, and after the bags 13 are supplied to the device manually or by an automatic bag feeding machine provided separately, the bags 13 are automatically opened and sealed. be exposed. The operation of this device will be explained below with reference to FIG.

供給された袋１３は移送ベルト１，１′の間
に挟着かつ吸着されながら移送ベルトの回転に
より連続的に図の右方（矢印）へ移送される
（第６図−１）。 The supplied bag 13 is continuously transferred to the right (arrow) in the figure by the rotation of the transfer belt while being sandwiched and attracted between the transfer belts 1 and 1' (FIG. 6-1).

袋１３が移送ベルト１と１′の間隔が拡がる
部分に達すると袋１３は移送ベルト１，１′に
吸着されているため、移送ベトと共に離隔さ
れ、次第に袋の口部を開いていく（第６図−
２）。 When the bag 13 reaches the part where the gap between the transfer belts 1 and 1' widens, the bag 13 is attracted to the transfer belts 1 and 1' and is separated from the transfer belt, gradually opening the opening of the bag (the first Figure 6-
2).

袋の口部が完全に開いた状態（第６図−３）
でシユート投入口８により粉粒体を袋１３に投
入する。 When the mouth of the bag is completely open (Figure 6-3)
Then, the powder and granular material is charged into the bag 13 through the chute input port 8.

粉粒体の投入完了後、移送ベルト１，１′の
間隔が狭まり始め、袋１３は移送ベルトに吸着
されているため、移送ベルトと共に次第に袋口
部を閉じ始める（第６図−４）。 After the feeding of the powder and granules is completed, the distance between the transfer belts 1 and 1' begins to narrow, and since the bag 13 is attracted to the transfer belt, the bag mouth gradually begins to close together with the transfer belt (FIG. 6-4).

再び移送ベルト１，１′は接触しかつ平行と
なり（第６図−５）、袋口部は移送ベルト１，
１′の間に挟着されて完全に閉鎖される。 The transfer belts 1 and 1' are in contact and parallel again (Fig. 6-5), and the bag opening is connected to the transfer belts 1 and 1'.
1' and is completely closed.

以上の一連の工程が完了したならば、袋１３は
次工程の封口装置へ渡される。 When the above series of steps are completed, the bag 13 is transferred to a sealing device for the next step.

尚、粉粒体投入後の袋及び粉粒体の重量は袋の
下方に設けられた袋受け装置（図示せず）により
支えられ移送ベルト１，１′と同期して移送され
る。 The weight of the bag and the powder after the granular material has been introduced is supported by a bag receiving device (not shown) provided below the bag, and is transferred in synchronization with the transfer belts 1, 1'.

（効果）以上の通り、この発明によれば本装置の機構は
袋の移送機構と袋の吸着機構とが一体化され、従
来公知の装置に比べて非常に簡単な機構となつて
いる。即ち可動部分が一対のベルトのみで少な
く、調整・保守点検が容易であり、装置を安価に
提供することができる。(Effects) As described above, according to the present invention, the mechanism of the present device integrates the bag transfer mechanism and the bag suction mechanism, making it a much simpler mechanism than conventionally known devices. That is, the number of moving parts is only a pair of belts, and adjustment, maintenance and inspection are easy, and the device can be provided at a low cost.

また一対の移送ベルトが循環運動するため、連
続的な作業が可能になり、高能率の操業が可能で
ある。 Furthermore, since the pair of transfer belts circulates, continuous work is possible and highly efficient operation is possible.

特に空気箱を仕切つて移送ベルトの袋吸引部に
対応した部分のみ吸引するようにしたので、本発
明の前記基礎となる発明の問題点は解決された。
即ち袋吸着部の吸引力が大きいので袋が外れるよ
うなことがなく、空気吸引ポンプの能力もさ程大
きくなくてよく経済的である。 In particular, the problems of the invention, which is the basis of the present invention, have been solved by partitioning the air box so that only the portion of the transfer belt that corresponds to the bag suction portion is suctioned.
That is, since the suction force of the bag suction section is large, the bag does not come off, and the capacity of the air suction pump is not very large, which is economical.

なお以上の説明において、袋詰機について説明
したが、一般に袋物の開封と封止を必要とする場
合に応用することができる。従つて、袋物に詰め
るものは粉粒体に限らず液状物でも勿論可能であ
る。 In the above description, a bag filling machine has been described, but the present invention can be generally applied to cases where it is necessary to open and seal bags. Therefore, the material to be packed in the bag is not limited to powder or granule material, but of course liquid material can also be used.

[Brief explanation of the drawing]

第１図は基本原理発明に係る袋口開閉装置の斜
視図。第２図はその平面の略図。第３図はその正
面の略図を示したものである。第４図は第１図に
於る空気箱と空気吸引ポンプとの関係を示す斜視
図。第５図は第１図に於る空気箱、移送ベルト及
び袋の吸着部分の関係を分解して説明した斜視図
である。第６図−１〜第６図−５はこの発明によ
る実施例の袋の動作態様の説明図。第７図は従来
公知の自動袋詰機の一例を示す。第８図は同上シ
ユートの開状態を、第９図は同じく閉状態を示
す。第１０図はこの発明による空気箱、移送ベル
ト及び袋の吸着部分の関係を示す分解斜視図。図において；１，１′……移送ベルト、２……
（入口側）案内車、３……（中間部）案内車、４
……（出口側）駆動車、５……空気箱、５ａ……
（空気箱の）傾斜壁、６……駆動装置、７……同
期機構、８……シユート投入口、９……（移送ベ
ルトの）空気孔、１０……（空気箱の）空気孔、
１１……配管、１２……空気吸引ポンプ、１３…
…袋、１４……架台、１５……回転式切換弁、１
６……回転子。 FIG. 1 is a perspective view of a bag opening/closing device according to the basic principle invention. Figure 2 is a schematic diagram of the plane. FIG. 3 shows a schematic front view thereof. FIG. 4 is a perspective view showing the relationship between the air box and the air suction pump in FIG. 1. FIG. 5 is an exploded perspective view illustrating the relationship between the air box, the transfer belt, and the suction portion of the bag in FIG. 1. FIGS. 6-1 to 6-5 are explanatory views of the operation mode of the bag according to the embodiment of the present invention. FIG. 7 shows an example of a conventionally known automatic bagging machine. FIG. 8 shows the chute in the open state, and FIG. 9 shows the chute in the closed state. FIG. 10 is an exploded perspective view showing the relationship between the air box, the transfer belt, and the suction portion of the bag according to the present invention. In the figure; 1, 1'... transfer belt, 2...
(Entrance side) Guide car, 3... (middle part) Guide car, 4
...(Exit side) Drive vehicle, 5...Air box, 5a...
Inclined wall (of the air box), 6... Drive device, 7... Synchronization mechanism, 8... Chute inlet, 9... Air hole (of the transfer belt), 10... Air hole (of the air box),
11...Piping, 12...Air suction pump, 13...
... Bag, 14 ... Frame, 15 ... Rotary switching valve, 1
6...Rotor.

Claims

[Claims]

1. A pair of endless transfer belts with a large number of through holes formed over the entire surface for conveying bags, with the opposing inner spaces parallel to each other at the entry side and exit side, and the middle section being parallel to each other in plan view. An air box is disposed oppositely so as to form a rhombus shape, and has air holes for sucking air through the through-holes of the endless transfer belt over substantially the entire length thereof, and is installed on the inner side of the opposite side of both the endless transfer belts. , this air box is divided into a plurality of small air chambers in the bag conveyance direction, and each small air chamber has a rotor equipped with a communication hole having a predetermined angle range that rotates in synchronization with the conveyance belt. 1. A suction belt type bag opening/closing device, characterized in that the suction belt type bag opening/closing device is connected to a suction pump in order in the bag conveyance direction via a rotary switching valve.