JP4461925B2 - Container sterilizer - Google Patents

Container sterilizer Download PDF

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JP4461925B2
JP4461925B2 JP2004190234A JP2004190234A JP4461925B2 JP 4461925 B2 JP4461925 B2 JP 4461925B2 JP 2004190234 A JP2004190234 A JP 2004190234A JP 2004190234 A JP2004190234 A JP 2004190234A JP 4461925 B2 JP4461925 B2 JP 4461925B2
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container
electron beam
irradiation
rotating
rotating body
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JP2006006726A (en
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俊明 中
幸伸 西納
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Shibuya Corp
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Description

本発明は電子線（ＥＢ）を容器に照射して滅菌する容器滅菌装置に関し、より詳しくは、容器を搬送しながら回転させて該容器に電子線を照射して滅菌する容器滅菌装置に関する。   The present invention relates to a container sterilization apparatus that irradiates a container with an electron beam (EB) and sterilizes, and more particularly, to a container sterilization apparatus that sterilizes a container by rotating the container while irradiating the container with an electron beam.

従来、例えば容器を搬送手段によって搬送しながら回転させて該容器の側部側から電子線を照射することで該容器の側面と内部を滅菌するようにした容器滅菌装置は知られている（例えば特許文献１）。
この特許文献１の装置においては、びん台と対応する数だけ電子線照射機構を設けてあり、各びん台とそれに対応する各電子線照射機構を同期して移動させながらびん台を回転させて容器にＥＢを照射するようにしている。
上述した特許文献１の容器滅菌装置においては、びん台と対応する数だけ電子線照射機構を設ける必要があるので、装置全体の構成が複雑で高価になるという欠点があった。
そこで、単一の電子線照射機構を容器の搬送方向の一側に配置して、容器を所定方向に搬送しながら照射位置で回転させて該容器に電子線を照射するようにした容器滅菌装置も提案されている（例えば特許文献２）。
特開平１１−１３７６４５号公報 特開平１１−１２１２号公報 Conventionally, for example, a container sterilization apparatus that sterilizes the side surface and the inside of a container by rotating the container while being conveyed by a conveying means and irradiating an electron beam from the side of the container is known (for example, Patent Document 1).
In the apparatus of this patent document 1, the number of electron beam irradiation mechanisms corresponding to the number of bottle tables is provided, and the bottle table is rotated while each bottle table and each electron beam irradiation mechanism corresponding thereto are moved synchronously. The container is irradiated with EB.
In the container sterilization apparatus described in Patent Document 1 described above, it is necessary to provide as many electron beam irradiation mechanisms as the number corresponding to the bottle table, and thus there is a drawback that the configuration of the entire apparatus is complicated and expensive.
Therefore, a container sterilization apparatus in which a single electron beam irradiation mechanism is arranged on one side in the container transport direction, and the container is rotated at the irradiation position while transporting the container in a predetermined direction to irradiate the container with the electron beam. Has also been proposed (for example, Patent Document 2).
Japanese Patent Laid-Open No. 11-137645 Japanese Patent Laid-Open No. 11-1212

ところで、上記特許文献２の容器滅菌装置においては、次のような欠点が指摘されていたものである。
すなわち、搬送手段によって搬送されている容器に対して搬送方向の一側から容器に対して電子線を照射しているが、電子線照射手段に対する容器の相対移動速度が減速される方向に容器が回転されるようになっていたものである（図５参照）。
そのため、照射領域における容器への電子線の照射時間が長くなり、高価な電子線の消費量が増大して、容器を滅菌するための費用が増大するという欠点があった。 By the way, in the container sterilization apparatus of the said patent document 2, the following faults were pointed out.
That is, an electron beam is irradiated to the container being conveyed by the conveying means from one side in the conveying direction, but the container is moved in a direction in which the relative movement speed of the container with respect to the electron beam irradiating means is reduced. It is intended to be rotated (see FIG. 5).
Therefore, the irradiation time of the electron beam to the container in the irradiation region becomes long, the consumption of the expensive electron beam increases, and there is a disadvantage that the cost for sterilizing the container increases.

上述した事情に鑑み、本発明は、容器を搬送する搬送手段と、この搬送手段による容器の搬送過程の一側に配置されて照射領域を通過する容器に対して側面側から電子線を照射する電子線照射手段と、上記照射領域内の容器を所定方向に回転させる回転手段とを備え、上記照射領域内を通過する容器を回転させながら、該容器に電子線を照射して容器の側面を滅菌するようにした容器滅菌装置において、
上記搬送手段は回転体を備えるとともに、上記回転手段は、上記回転体の円周方向等間隔位置にそれぞれ回転自在に設けられて、それぞれ容器が正立状態で載置されるびん台と、各びん台を回転させるサーボモータとを備えており、さらに上記電子線照射手段は、上記回転体の外側に固定して配置してあり、上記サーボモータは、上記回転体の回転方向と同じ方向にびん台を回転させて、上記電子線照射手段に対する容器の電子線照射面側の相対移動速度を増大させることを特徴とするものである。 In view of the above-described circumstances, the present invention irradiates an electron beam from the side surface to a transport unit that transports a container and a container that is disposed on one side of a transport process of the container by the transport unit and passes through an irradiation region. An electron beam irradiating means and a rotating means for rotating the container in the irradiation region in a predetermined direction, while rotating the container passing through the irradiation region, irradiating the container with the electron beam to In a container sterilization apparatus designed to sterilize,
The conveying means includes a rotating body, and the rotating means is rotatably provided at circumferentially equidistant positions of the rotating body, respectively, and a bottle table on which each container is placed in an upright state, A servo motor that rotates the table, and the electron beam irradiation means is fixedly disposed outside the rotating body, and the servo motor is in the same direction as the rotating direction of the rotating body. the bottle base is rotated, it is characterized in that to increase the relative movement speed of the electron beam irradiation surface side of the container with respect to the electron beam irradiation means.

上述した構成によれば、１つの容器に対する電子線の照射時間を従来よりも短縮することが可能となる。したがって、従来と比較して、１つの容器を滅菌するために必要な電子線の消費量を減少させることができ、ひいては、容器滅菌装置によって容器を滅菌するために要する費用を減少させることができる。   According to the above-described configuration, it is possible to shorten the electron beam irradiation time for one container as compared with the conventional case. Therefore, it is possible to reduce the consumption of the electron beam necessary for sterilizing one container as compared with the conventional case, and thus, it is possible to reduce the cost required for sterilizing the container by the container sterilization apparatus. .

以下図示実施例について、本発明を説明すると、図１ないし図２において、１は回転式の容器滅菌装置であり、空の容器２（ＰＥＴ容器）に電子線ＥＢを照射することで該容器２の外周面（外方側の側面）と内部の全域を滅菌できるようになっている。
容器滅菌装置１は図示しない駆動源によって時計方向に回転される搬送手段としての回転体３と、回転体３の円周方向等間隔位置に回転自在に設けられて容器２を載置するびん台４と、びん台４の移動過程（容器２の搬送過程）となる照射領域Ａを通過するびん台４上の容器２に対して電子線ＥＢを照射する電子線照射手段５とを備えている。
回転体３が時計方向に回転されている状態において、搬送コンベヤ６によって空の容器２が容器滅菌装置１の位置に搬送されると、相前後する各容器２は先ずタイミングスクリュー７により所定間隔に離隔されるようになっており、その後、供給ホイール８によって供給位置Ｂとなる各びん台４上に正立状態で載置されるようになっている。
びん台４上の容器２は、回転体３の時計方向の回転に伴って供給位置Ｂから電子線ＥＢの照射領域Ａへ搬送され、この照射領域Ａ内を移動する間にびん台４がサーボモータ９によって時計方向に回転されて該びん台４上の容器２が時計方向に回転されるとともに、その容器２に対して電子線照射手段５から電子線ＥＢが照射される。これにより、容器２の外方側の側面および内面が電子線ＥＢによって滅菌されるようになっている。
その後、回転体３の回転に伴って照射領域Ａを通過した容器２は排出位置Ｃまで搬送されると、排出ホイール１１によってびん台４上から排出されて排出コンベヤ１２上に受け渡されるようになっている。 Hereinafter, the present invention will be described with reference to the illustrated embodiments. In FIGS. 1 and 2, reference numeral 1 denotes a rotary container sterilizer, and an empty container 2 (PET container) is irradiated with an electron beam EB. The outer peripheral surface (side surface on the outer side) and the entire interior can be sterilized.
The container sterilizer 1 includes a rotating body 3 serving as a conveying means that is rotated clockwise by a driving source (not shown), and a bottle table that is rotatably provided at equal circumferential positions on the rotating body 3 and on which the container 2 is placed. 4 and electron beam irradiating means 5 for irradiating the electron beam EB to the container 2 on the bottle table 4 that passes through the irradiation region A that is the moving process of the bottle table 4 (conveying process of the container 2). .
When the empty container 2 is transported to the position of the container sterilizer 1 by the transport conveyor 6 in a state where the rotating body 3 is rotated in the clockwise direction, each successive container 2 is first set at a predetermined interval by the timing screw 7. After that, they are placed in an upright state on each bottle table 4 at the supply position B by the supply wheel 8.
The container 2 on the bottle table 4 is conveyed from the supply position B to the irradiation region A of the electron beam EB as the rotating body 3 rotates in the clockwise direction, and the bottle table 4 is servoed while moving in the irradiation region A. The container 9 on the bottle table 4 is rotated clockwise by the motor 9 and the container 2 is irradiated with the electron beam EB from the electron beam irradiation means 5. Thereby, the outer side surface and inner surface of the container 2 are sterilized by the electron beam EB.
After that, when the container 2 that has passed through the irradiation area A as the rotating body 3 rotates is transported to the discharge position C, the container 2 is discharged from the bottle table 4 by the discharge wheel 11 and transferred onto the discharge conveyor 12. It has become.

びん台４は回転体３の外周部の位置に回転自在に取り付けられており、びん台４の中央部には上下方向に貫通する負圧通路１３を形成している。この負圧通路１３の上端部はびん台４の載置面４Ａの中央部に開口させてあり、負圧通路１３の下端部はロータリーフィッチング１４と導管１５を介して負圧源１６に接続されている。各びん台４の負圧通路１３には常時負圧源１４から負圧が導入されており、上述した供給位置Ｂにおいてびん台４上に容器２が正立状態で供給されると、負圧通路１３に導入されている負圧によって容器２の底部が載置面４Ａに吸着保持されて、正立状態を維持されるようになっている。なお、負圧通路１３に電磁弁を設けて、容器２がびん台４に供給された時点で負圧を導入してもよい。
また、上記びん台４の下端の外周部には小径のギヤ１７を嵌着するとともに、回転体３の底部には各びん台４ごとにサーボモータ９を配置している。このサーボモータ９の駆動軸に嵌着したギヤ１８を上記びん台４のギヤ１７に噛み合わせている。
サーボモータ９は図示しない制御装置によって作動を制御されるようになっており、各びん台４が回転体３の回転に伴って照射領域Ａ内を搬送される際に、制御装置によってサーボモータ９が回転駆動されて、各びん台４を時計方向に回転させるようになっている。これにより、照射領域Ａ内を搬送されるびん台４上の容器２もびん台４とともに時計方向に回転されるようになっている。 The bottle table 4 is rotatably attached to the position of the outer peripheral portion of the rotating body 3, and a negative pressure passage 13 penetrating in the vertical direction is formed in the central portion of the bottle table 4. An upper end portion of the negative pressure passage 13 is opened at a central portion of the mounting surface 4A of the bottle table 4, and a lower end portion of the negative pressure passage 13 is connected to a negative pressure source 16 through a rotary fitting 14 and a conduit 15. Has been. A negative pressure is always introduced from the negative pressure source 14 into the negative pressure passage 13 of each bottle table 4. When the container 2 is supplied in an upright state on the bottle table 4 at the supply position B described above, the negative pressure is supplied. The bottom of the container 2 is attracted and held on the mounting surface 4A by the negative pressure introduced into the passage 13, so that the upright state is maintained. In addition, an electromagnetic valve may be provided in the negative pressure passage 13 and negative pressure may be introduced when the container 2 is supplied to the bottle table 4.
A small-diameter gear 17 is fitted to the outer peripheral portion of the lower end of the bottle table 4, and a servo motor 9 is arranged for each bottle table 4 on the bottom of the rotating body 3. A gear 18 fitted to the drive shaft of the servo motor 9 is engaged with the gear 17 of the table 4.
The operation of the servo motor 9 is controlled by a control device (not shown). When each bottle table 4 is transported in the irradiation area A as the rotating body 3 rotates, the servo motor 9 is controlled by the control device. Are driven to rotate, so that each bottle table 4 is rotated in the clockwise direction. Thereby, the container 2 on the bottle table 4 conveyed in the irradiation area A is also rotated clockwise together with the bottle table 4.

次に、電子線照射手段５は、電子線ＥＢを発生させるＥＢ発生部５Ａと、このＥＢ発生部５Ａで発生させた電子線ＥＢを容器２に向けて照射する照射部５Ｂと、さらに照射領域Ａにおける上方に傾斜させて配置した反射ミラー２１を備えている。
照射部５Ｂのケーシング２２の前面に窓２２Ａを設けてあり、ＥＢ発生部５Ａで発生した電子線ＥＢは照射部５Ｂの窓２２Ａを介して、照射領域Ａ内を移動する容器２に照射できるようになっている。
上述したように、本実施例においては、回転体３の時計方向の回転に伴ってびん台４に載置した容器２が搬送されつつ、回転されるので、搬送方向の一側に固定して配置した電子線照射手段５から照射領域Ａ内の容器２に照射することで、該容器２の外方側の側面２Ａの全域に電子線ＥＢを照射することができる。
また、照射領域のＡの上部には反射ミラー２１を配置してあるので、電子線照射手段５から照射された電子線ＥＢは反射ミラー２１によって下方側に向けて反射されて、時計方向に回転されている容器２の内面に照射されるようになっている。そして、容器２は時計方向に回転されるので、容器２の内面の全域に電子線が照射されて滅菌されるようになっている。
このように本実施例では、照射領域Ａを回転体３によって搬送され、かつ時計方向に回転される容器２に対して電子線照射手段５から電子線ＥＢを照射することで、従来と比較して照射領域Ａにおける電子線ＥＢの消費量を減少させるようにしている。 Next, the electron beam irradiation means 5 includes an EB generating unit 5A that generates an electron beam EB, an irradiation unit 5B that irradiates the electron beam EB generated by the EB generating unit 5A toward the container 2, and an irradiation region. A reflection mirror 21 is provided so as to be inclined upward in A.
A window 22A is provided on the front surface of the casing 22 of the irradiation unit 5B, and the electron beam EB generated by the EB generation unit 5A can be applied to the container 2 moving in the irradiation region A through the window 22A of the irradiation unit 5B. It has become.
As described above, in this embodiment, the container 2 placed on the bottle table 4 is rotated while being transported as the rotating body 3 rotates in the clockwise direction, so that the container 2 is fixed to one side in the transport direction. By irradiating the container 2 in the irradiation area A from the arranged electron beam irradiation means 5, it is possible to irradiate the entire side surface 2 </ b> A on the outer side of the container 2 with the electron beam EB.
Further, since the reflection mirror 21 is disposed above the irradiation area A, the electron beam EB irradiated from the electron beam irradiation means 5 is reflected downward by the reflection mirror 21 and rotated clockwise. The inner surface of the container 2 is irradiated. Since the container 2 is rotated clockwise, the entire inner surface of the container 2 is irradiated with an electron beam and sterilized.
Thus, in the present embodiment, the electron beam EB is irradiated from the electron beam irradiation means 5 to the container 2 that is transported in the irradiation area A by the rotating body 3 and rotated in the clockwise direction, thereby comparing with the conventional case. Thus, the consumption of the electron beam EB in the irradiation area A is reduced.

上述したように、本実施例においては、回転体３により容器２を時計方向に搬送するとともに、該容器２を時計方向に回転させるようにしている。換言すると、図４に概略の平面図で示したように、本実施例においては、電子線照射手段５に対する容器２の電子線照射面側の相対移動速度を増大させる方向に容器２を回転させるようにしている。
そのため、容器２の外周部における円周方向の全域にわたって電子線ＥＢが照射されるまでに要する時間を従来と比較して減少させることができる。したがって、本実施例は、従来と比較して、１つの容器２を滅菌するために必要な電子線ＥＢの消費量を減少させることができ、ひいては、容器滅菌装置１によって容器２を滅菌するために要する費用を従来よりも減少させることができる。
このような本実施例に対して図５に示すように、特許文献２に示した従来の装置では、上記本実施例とは逆方向に容器を回転させるようになっている。つまり、電子線の照射領域において容器を反時計回りに回転させていたので、電子線照射手段に対する電子線照射面側の容器の相対移動速度が減少する結果となっていた。
そのため、従来では、容器を回転させて該容器の側面における円周方向全域に電子線を照射するまでに不要な時間が掛かることになり、したがって、容器に対する電子線の照射時間が長くなり、電子線の消費量が増大していたものである。
次に、図３は、本発明の第２実施例を示したものである。この第２実施例においては、電子線照射手段５の照射部５Ｂに偏向手段２３を設けたものであり、照射位置Ａを移動する容器２の動きに追従させて電子線を容器２に照射するようにしたものである。その他の構成は、上記第１実施例と同様である。このような第２実施例においても、上記第１の実施例と同様の作用効果を得ることができる。
なお、上述した実施例は、容器２を搬送する搬送手段として回転体３を用いていたが、回転体３の代わりに容器２を直線方向に搬送するライン式の搬送手段を用いても良い。 As described above, in this embodiment, the container 2 is conveyed clockwise by the rotating body 3 and the container 2 is rotated clockwise. In other words, as shown in the schematic plan view of FIG. 4, in this embodiment, the container 2 is rotated in a direction that increases the relative movement speed of the electron beam irradiation means 5 on the electron beam irradiation surface side of the container 2. I am doing so.
Therefore, it is possible to reduce the time required until the electron beam EB is irradiated over the entire circumferential direction in the outer peripheral portion of the container 2 as compared with the conventional case. Therefore, this embodiment can reduce the amount of consumption of the electron beam EB necessary for sterilizing one container 2 as compared with the conventional case. As a result, the container sterilization apparatus 1 sterilizes the container 2. The cost required for this can be reduced as compared with the prior art.
As shown in FIG. 5 for this embodiment, in the conventional apparatus shown in Patent Document 2, the container is rotated in the direction opposite to that of the embodiment. That is, since the container was rotated counterclockwise in the electron beam irradiation area, the relative movement speed of the container on the electron beam irradiation surface side with respect to the electron beam irradiation means was reduced.
Therefore, conventionally, it takes unnecessary time to rotate the container and irradiate the electron beam to the entire circumferential direction on the side surface of the container. The amount of wire consumed has increased.
Next, FIG. 3 shows a second embodiment of the present invention. In the second embodiment, the irradiation unit 5B of the electron beam irradiation unit 5 is provided with a deflection unit 23, and the container 2 is irradiated with the electron beam by following the movement of the container 2 that moves the irradiation position A. It is what I did. Other configurations are the same as those in the first embodiment. In the second embodiment, the same operational effects as those of the first embodiment can be obtained.
In the above-described embodiment, the rotating body 3 is used as the transporting means for transporting the container 2. However, instead of the rotating body 3, a line-type transporting means for transporting the container 2 in the linear direction may be used.

本発明の一実施例を示す概略の平面図。1 is a schematic plan view showing an embodiment of the present invention. 図１のＩＩ―ＩＩ線に沿う要部の断面図。Sectional drawing of the principal part which follows the II-II line | wire of FIG. 図１の要部を示す平面図。The top view which shows the principal part of FIG. 図１に示した容器殺菌装置１によって、容器２に電子線を照射する過程を示す図。The figure which shows the process in which the container 2 is irradiated with an electron beam by the container sterilizer 1 shown in FIG. 従来の容器殺菌装置によって容器に電子線を照射する過程を示す図。The figure which shows the process of irradiating a container with an electron beam with the conventional container sterilizer.

符号の説明Explanation of symbols

１…容器滅菌装置 ２…容器
３…回転体 ４…びん台
５…電子線照射手段 ＥＢ…電子線 DESCRIPTION OF SYMBOLS 1 ... Container sterilizer 2 ... Container 3 ... Rotating body 4 ... Bottle stand 5 ... Electron beam irradiation means EB ... Electron beam

Claims (3)

容器を搬送する搬送手段と、この搬送手段による容器の搬送過程の一側に配置されて照射領域を通過する容器に対して側面側から電子線を照射する電子線照射手段と、上記照射領域内の容器を所定方向に回転させる回転手段とを備え、上記照射領域内を通過する容器を回転させながら、該容器に電子線を照射して容器の側面を滅菌するようにした容器滅菌装置において、
上記搬送手段は回転体を備えるとともに、上記回転手段は、上記回転体の円周方向等間隔位置にそれぞれ回転自在に設けられて、それぞれ容器が正立状態で載置されるびん台と、各びん台を回転させるサーボモータとを備えており、さらに上記電子線照射手段は、上記回転体の外側に固定して配置してあり、上記サーボモータは、上記回転体の回転方向と同じ方向にびん台を回転させて、上記電子線照射手段に対する容器の電子線照射面側の相対移動速度を増大させることを特徴とする容器滅菌装置。 A transport means for transporting the container; an electron beam irradiation means for irradiating an electron beam from a side surface to a container that is disposed on one side of the transport process of the container by the transport means and that passes through the irradiation area; A container sterilization apparatus comprising a rotating means for rotating the container in a predetermined direction, and irradiating the side of the container by irradiating the container with an electron beam while rotating the container passing through the irradiation region.
The conveying means includes a rotating body, and the rotating means is rotatably provided at circumferentially equidistant positions of the rotating body, respectively, and a bottle table on which each container is placed in an upright state, A servo motor that rotates the table, and the electron beam irradiation means is fixedly disposed outside the rotating body, and the servo motor is in the same direction as the rotating direction of the rotating body. the bottle base is rotated, the container sterilization apparatus, characterized in that to increase the relative movement speed of the electron beam irradiation surface side of the container with respect to the electron beam irradiation means. 上記電子線照射手段に偏向手段を設けて、上記照射領域を通過する容器に対して電子線を追従させて照射することを特徴とする請求項１に記載の容器滅菌装置。 2. The container sterilization apparatus according to claim 1 , wherein the electron beam irradiating means is provided with a deflecting means, and irradiates the container passing through the irradiation region by following the electron beam. 上記照射領域の上部に電子線を反射させる反射ミラーを設けて、上記電子線照射手段から照射された電子線が容器の内面にも照射されるように構成したことを特徴とする請求項１又は請求項２に記載の容器滅菌装置。 The reflection mirror which reflects an electron beam is provided in the upper part of the said irradiation area | region, It comprised so that the electron beam irradiated from the said electron beam irradiation means might be irradiated also to the inner surface of a container, or characterized by the above-mentioned. The container sterilizer according to claim 2 .
JP2004190234A 2004-06-28 2004-06-28 Container sterilizer Expired - Fee Related JP4461925B2 (en)

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Publication number Priority date Publication date Assignee Title
JP5034683B2 (en) 2007-05-31 2012-09-26 澁谷工業株式会社 Electron beam sterilizer
JP5176502B2 (en) * 2007-11-30 2013-04-03 澁谷工業株式会社 Container sterilizer
JP5176503B2 (en) * 2007-11-30 2013-04-03 澁谷工業株式会社 Container sterilizer
JP5293092B2 (en) * 2008-10-30 2013-09-18 澁谷工業株式会社 Electron beam sterilizer
DE102010012569A1 (en) * 2010-03-23 2011-09-29 Krones Ag Device for sterilizing containers
US8835873B2 (en) 2011-10-26 2014-09-16 Airex Co., Ltd. Continuous sterilization system
DE102012110108A1 (en) * 2012-10-23 2014-04-24 Krones Ag Device for external sterilization of plastic preforms
DE102021134529A1 (en) * 2021-12-23 2023-06-29 Krones Aktiengesellschaft Device and method for treating and in particular sterilizing containers

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