JP2007117960A - Coating apparatus for construction plate - Google Patents

Coating apparatus for construction plate Download PDF

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JP2007117960A
JP2007117960A JP2005317257A JP2005317257A JP2007117960A JP 2007117960 A JP2007117960 A JP 2007117960A JP 2005317257 A JP2005317257 A JP 2005317257A JP 2005317257 A JP2005317257 A JP 2005317257A JP 2007117960 A JP2007117960 A JP 2007117960A
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building board
ink
conveying means
coating
head
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JP2005317257A
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JP4778295B2 (en
Inventor
Yoshiaki Hagimoto
善紀 萩本
Hirobumi Yamanaka
博文 山中
Mitsuteru Tokuda
光輝 徳田
Kenji Cho
謙二 長
Nobuo Tachibana
延雄 橘
Fumiaki Izumo
文明 出雲
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KMEW Co Ltd
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Kubota Matsushitadenko Exterior Works Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a coating apparatus for a construction plate in which a coating head and the construction plate cannot be contaminated by an ink becoming a mist and an ink rebounded by the construction plate. <P>SOLUTION: The coating apparatus for the construction plate 1 is provided with a conveying means 2 for conveying the construction plate 1 in the state that it is placed; and the coating head 3 arranged above the conveying means 2. In the coating apparatus, the ink is injected from the coating head 3 relative to an upper surface of the construction plate 1 conveyed by the conveying means 2 to perform coating. A fan means 4 for air-feeding toward a lower side at injection of the ink from the coating head 3 is provided above the coating head 3. An air suction means 5 for sucking air at an upper side of the conveying means 2 is below the conveying means 2 at injection of the ink from the coating head 3. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、外壁材等の建築板の塗装面にインクを噴射することにより塗装面をインクジェット方式で塗装する建築板の塗装装置に関するものである。   The present invention relates to a building board coating apparatus that paints a painted surface by an ink jet method by jetting ink onto the painted surface of a building board such as an outer wall material.

従来から、この種の塗装装置として、建築板の上面を塗装面とし、この塗装面に向かって塗装ヘッド（ノズルアレイ）からインクを噴射するものが提案されている（例えば、特許文献１参照）。特許文献１に記載された塗装装置は、建築板を所定のラインに沿って搬送する搬送手段を備え、搬送手段のラインの途中に塗装ヘッドを設けることにより、塗装ヘッドの下側を通過する建築板の塗装面が所望のデザインに塗装されるものである。   Conventionally, as this type of coating apparatus, an apparatus has been proposed in which an upper surface of a building board is a painted surface and ink is ejected from a coating head (nozzle array) toward the painted surface (see, for example, Patent Document 1). . The painting apparatus described in Patent Document 1 includes a conveying unit that conveys a building board along a predetermined line, and a building that passes a lower side of the coating head by providing a coating head in the middle of the line of the conveying unit. The painted surface of the board is painted to the desired design.

しかし、塗装ヘッドを通過する前に建築板は乾燥工程などのためにその塗装面が高温になっている場合では、図３に矢印で示すように、建築板１から上昇気流が発生することがあり、この上昇気流によりインクのミストが舞い上がったり建築板でインクの跳ね返りが発生しやすくなって、このインクが塗装ヘッドや建築板に付着して汚れるという問題があった。
特開２００５−７４６８６号公報 However, if the painted surface of the building board is hot due to a drying process or the like before passing through the painting head, an upward air flow may be generated from the building board 1 as shown by an arrow in FIG. There is a problem in that the rising air current causes the mist of the ink to rise or the ink to rebound easily on the building board, and the ink adheres to the painting head or the building board and becomes dirty.
JP 2005-74666 A

本発明は上記の点に鑑みてなされたものであり、塗装ヘッドや建築板がミストになったインクや建築板で跳ね返ったインクにより汚れないようにすることができる建築板の塗装装置を提供することを目的とするものである。   The present invention has been made in view of the above points, and provides a coating apparatus for a building board that can prevent the coating head and the building board from becoming dirty with ink that has become mist or ink that has rebounded from the building board. It is for the purpose.

本発明の建築板１の塗装装置は、建築板１を載置した状態で搬送するための搬送手段２と、搬送手段２の上方に配置される塗装ヘッド３とを備え、搬送手段２で搬送される建築板１の上面に対して塗装ヘッド３からインクを噴射して塗装するための建築板１の塗装装置において、塗装ヘッド３からのインクの噴射時に下方に向って送風するための送風手段４を塗装ヘッド３の上方に設け、塗装ヘッド３からのインクの噴射時に搬送手段２の上側の空気を吸気するための吸気手段５を搬送手段２の下方に配設して成ることを特徴とするものである。   The coating apparatus for a building board 1 according to the present invention includes a conveying means 2 for conveying the building board 1 in a state where it is placed, and a coating head 3 disposed above the conveying means 2. In the coating apparatus of the building board 1 for coating by spraying ink from the coating head 3 to the upper surface of the building board 1 to be blown, the blowing means for blowing downward when the ink is jetted from the coating head 3 4 is provided above the coating head 3, and an intake means 5 for taking in air above the conveying means 2 when ink is ejected from the coating head 3 is provided below the conveying means 2. To do.

本発明にあっては、搬送手段２として多孔ベルト６を用いることができる。   In the present invention, the perforated belt 6 can be used as the conveying means 2.

本発明では、送風手段２による送風と吸気手段５による吸気とによって、搬送手段２に載置された建築板１からの上昇気流とは反対向きの空気の流れを発生させて上昇気流の発生を抑えることができ、インクのミストの発生や建築板１によるインクの跳ね返りの発生を少なくして、これらによる塗装ヘッド３や建築板１の汚れを防止することができるものである。   In the present invention, the air flow in the direction opposite to the ascending air current from the building board 1 placed on the conveying means 2 is generated by the air blowing by the air blowing means 2 and the air intake by the air intake means 5 to generate the ascending air current. Thus, the occurrence of ink mist and the occurrence of ink splashing by the building board 1 can be reduced, and the coating head 3 and the building board 1 can be prevented from being soiled by these.

また、多孔ベルト６を用いることによって、多孔ベルト６を通じて吸気手段５による吸引作用を多孔ベルト６上の建築板１に及ぼして吸着させることができ、建築板１の搬送時の蛇行や斜行を防止することができると共に、多孔ベルト６と建築板１の同調化により印刷精度を高くすることができるものである。   Further, by using the perforated belt 6, the suction action by the suction means 5 can be applied to the building board 1 on the perforated belt 6 through the perforated belt 6 and can be adsorbed. This can be prevented and the printing accuracy can be increased by synchronizing the perforated belt 6 and the building board 1.

以下、本発明を実施するための最良の形態を説明する。   Hereinafter, the best mode for carrying out the present invention will be described.

本実施形態の建築板１の塗装装置は、図２に示すように、一方向に建築板１を搬送する搬送手段２と、搬送手段２の上方に配設され建築板１の塗装面である上面に対してインクを噴射する塗装ヘッド３を塗装手段として有するものであって、塗装面を建築板１の幅方向（図２（ａ）の上下方向）の全長に亘ってインクジェット方式で塗装するものである。   As shown in FIG. 2, the coating apparatus for the building board 1 according to the present embodiment is a conveying means 2 that conveys the building board 1 in one direction, and a painting surface of the building board 1 that is disposed above the conveying means 2. A coating head 3 for spraying ink onto the upper surface is provided as a coating means, and the painted surface is coated by an inkjet method over the entire length of the building board 1 in the width direction (vertical direction in FIG. 2A). Is.

建築板１としては、セメント成分を固形分として含有する原料スラリーを抄造、押出しまたは注型し、成形、前養生し、オートクレーブ養生することにより得られる窯業系の無機質板を例示することができる。このとき、原料スラリーの組成や、抄造、押出しまたは注型の条件、成形条件、前養生、オートクレーブ養生などの条件は特に限定されず、無機質板の製造において通常用いられる組成や条件を適用すればよい。また、建築板１の上面にはインクジェットのインクが定着しやすいように、受理層（受容層）を形成することができる。   Examples of the building board 1 include ceramic-based inorganic boards obtained by papermaking, extruding or casting a raw material slurry containing a cement component as a solid content, molding, pre-curing, and autoclave curing. At this time, the composition of the raw slurry, the conditions of papermaking, extrusion or casting, molding conditions, pre-curing, autoclave curing, etc. are not particularly limited, so long as the compositions and conditions normally used in the production of inorganic plates are applied. Good. Further, a receiving layer (receiving layer) can be formed on the upper surface of the building board 1 so that the ink jet ink can be easily fixed.

搬送手段２は、建築板１を導入する部分がローラコンベア１０で構成され、ローラコンベア１０の終点以降が建築板１の位置ずれを生じ難いタイミングベルト１１で構成されている。図２の搬送手段２は建築板１を矢印Ａの方向に搬送するものである。   The conveying means 2 includes a roller conveyor 10 at a portion where the building board 1 is introduced, and a timing belt 11 at which the position of the building board 1 hardly occurs after the end point of the roller conveyor 10. The conveying means 2 in FIG. 2 conveys the building board 1 in the direction of arrow A.

建築板１は、厚み方向の一面である塗装面を上側にして搬送手段２に載置される。ローラコンベア１０は、建築板１を幅方向の一方（図２（ａ）の下方）に寄せるように建築板１の幅方向に対して傾斜しており、また、タイミングベルト１１において建築板１を導入する部分には建築板１を幅方向の前記一方に押すプッシャー１４が配置されている。これにより、建築板１は、塗装ヘッド３で塗装されるまでに幅方向の位置が揃えられることになる。   The building board 1 is placed on the conveying means 2 with the painted surface, which is one surface in the thickness direction, facing upward. The roller conveyor 10 is inclined with respect to the width direction of the building board 1 so as to bring the building board 1 to one side in the width direction (downward in FIG. 2A). A pusher 14 that pushes the building board 1 to the one side in the width direction is disposed in the portion to be introduced. As a result, the building board 1 is aligned in the width direction before being painted by the painting head 3.

ここで、図１に示すように、タイミングベルト１１としては多孔ベルト６を用いることができる。多孔ベルト６は厚み方向に貫通する孔６ａを全面に亘って形成したベルトである。このような多孔ベルト６を用いることによって、後述のような吸気手段５による吸引作用を多孔ベルト６上に載せた建築板１に及ぼすことができる。   Here, as shown in FIG. 1, a porous belt 6 can be used as the timing belt 11. The perforated belt 6 is a belt in which holes 6a penetrating in the thickness direction are formed over the entire surface. By using such a perforated belt 6, the suction action by the air intake means 5 as described later can be exerted on the building board 1 placed on the perforated belt 6.

さらに、図２に示す例では、２枚の建築板１を並行して塗装できるように、２台の搬送手段２が建築板１の幅方向に並設され、各搬送手段２に塗装ヘッド３がそれぞれ配設されている。ここで、両方の搬送手段２、２は近接配置されており、両方の搬送手段２、２に跨る形で建築板１を載置するようにすれば、幅広の建築板１を塗装することも可能である。この場合には、建築板１は幅方向の半分ずつが各搬送手段２に設けた各塗装手段によってそれぞれ塗装されることになる。両方の搬送手段２、２間で構成の差異はないので、以下では一方の搬送手段２について説明する。   Further, in the example shown in FIG. 2, two conveying means 2 are juxtaposed in the width direction of the building board 1 so that the two building boards 1 can be coated in parallel, and each painting means 3 has a coating head 3. Are arranged respectively. Here, both conveying means 2 and 2 are arranged close to each other, and if the building board 1 is placed so as to straddle both conveying means 2 and 2, the wide building board 1 may be painted. Is possible. In this case, the building board 1 is painted half by one in the width direction by each coating means provided in each conveying means 2. Since there is no difference in configuration between both the conveying means 2 and 2, one of the conveying means 2 will be described below.

本実施形態では、カラー塗装が可能な塗装装置を例示しており、塗装手段としては、イエロー、シアン、マゼンタ、ブラックの各色のインクをそれぞれ噴射する４台の塗装ヘッド３を有している（図２では左端から順にイエロー、シアン、マゼンタ、ブラック）。各塗装ヘッド３は、それぞれ多数のノズルを有したノズルアレイ（図示せず）を備え、各色のインクをノズルアレイに供給するインクタンク（図示せず）に接続された構成を有する。ノズルアレイは、ピエゾ素子（図示せず）を使用してインクの液滴を各ノズルから噴射するものである。また、ノズルアレイにはインクの噴射の制御を行うノズル制御手段（図示せず）が接続されており、ノズル制御手段は、塗装のデザインのデータを有した塗装制御手段（図示せず）からのノズル制御信号を受けてインクを噴射させるものである。   In the present embodiment, a painting apparatus capable of color painting is illustrated, and the painting means includes four painting heads 3 that respectively eject yellow, cyan, magenta, and black inks ( In FIG. 2, yellow, cyan, magenta, and black in this order from the left). Each coating head 3 includes a nozzle array (not shown) having a large number of nozzles, and is connected to an ink tank (not shown) that supplies ink of each color to the nozzle array. The nozzle array ejects ink droplets from each nozzle using a piezo element (not shown). Further, nozzle control means (not shown) for controlling ink ejection is connected to the nozzle array, and the nozzle control means is supplied from a paint control means (not shown) having paint design data. Ink is ejected in response to a nozzle control signal.

図１に示すように、送風手段４は風を発生させるファン（図示省略）などと接続された送風ダクト４ａで形成されており、この送風ダクト４ａは塗装ヘッド３の上方に配置されている。送風ダクト４ａの下面には複数本のスリット状の送風口４ｂが形成されており、送風口４ｂから強制的に空気が下方に向って噴出する（エアブロー）ように形成されている。送風ダクト４ａは建築板１の搬送方向Ａと同方向に並べられた全ての塗装ヘッド３、３…の上方を覆うように配置されており、複数本の送風口４ｂは建築板１の搬送方向Ａと同方向に並べて設けられている。   As shown in FIG. 1, the blowing means 4 is formed by a blowing duct 4 a connected to a fan (not shown) that generates wind, and the blowing duct 4 a is disposed above the coating head 3. A plurality of slit-shaped air outlets 4b are formed on the lower surface of the air duct 4a, and are formed so that air is forcibly ejected downward (air blow) from the air outlet 4b. The air duct 4a is arranged so as to cover all the coating heads 3, 3... Arranged in the same direction as the transport direction A of the building board 1, and the plurality of air outlets 4b are transported in the transport direction of the building board 1. A are arranged side by side in the same direction as A.

吸気手段５は真空・減圧ポンプ（図示省略）と接続される複数個の真空・減圧ボックス５ａで形成されており、搬送手段２の下方に配設されている。すなわち、真空・減圧ボックス５ａは、搬送装置２のタイミングベルト１１の回転軸２０よりも上側に位置する部分の下面に近接して設けられており、これにより、孔６ａを通じてタイミングベルト１１の上側の空気を吸気することができるものである。   The intake means 5 is formed by a plurality of vacuum / decompression boxes 5 a connected to a vacuum / decompression pump (not shown), and is disposed below the conveying means 2. In other words, the vacuum / decompression box 5a is provided close to the lower surface of the portion located above the rotation shaft 20 of the timing belt 11 of the transport device 2, and thereby the upper side of the timing belt 11 through the hole 6a. It can inhale air.

尚、図２において、符号１５は塗装ヘッド３を上下方向に移動させる昇降手段を示し、符号１６は塗装ヘッド３を設けた位置よりも搬送方向の手前の位置に配置され、基準面からの塗装面の高さのうち建築板１の幅方向における最大高さを計測する計測手段を示し、昇降手段１５は計測手段１６の計測結果に基づいてシーケンサからなる制御手段により駆動することができる。   In FIG. 2, reference numeral 15 denotes an elevating means for moving the coating head 3 in the vertical direction, and reference numeral 16 is arranged at a position in the transport direction before the position where the coating head 3 is provided, and is applied from the reference surface. The measuring means for measuring the maximum height in the width direction of the building board 1 among the heights of the surfaces is shown. The elevating means 15 can be driven by a control means comprising a sequencer based on the measurement result of the measuring means 16.

以下に、上述した塗装装置の動作を説明する。   Below, operation | movement of the coating device mentioned above is demonstrated.

まず、建築板１を搬送手段２のローラコンベア１０に載せ、タイミングベルト１１にまで搬送する。次に、計測手段１６の近傍の計測位置を通過している間に計測手段１６によって、基準面（例えば、タイミングベルト１１の上面）からの建築板１の塗装面（上面）の高さのうち建築板１の幅方向における最大高さが計測される。そして、建築板１が計測位置を通過し終わると、制御手段は、この最大高さよりも所定値だけ大きい間隔で塗装ヘッド３と基準面とが対向するように、昇降手段１５を駆動して塗装ヘッド３を移動させる。これにより、建築板１の塗装時には塗装ヘッド３と塗装面との間隔は所定以上（例えば、５ｍｍ以上）になるので、塗装ヘッド３が建築板１に衝突することはない。また、複数枚の建築板１を順次搬送し、各建築板１に順次塗装を施すことも可能であって、この場合には、塗装ヘッド３により建築板１の塗装が終了した後に塗装ヘッド３の移動を開始し、次に塗装する他の建築板１が塗装位置（塗装ヘッド３の設置位置）に到達するまでに塗装ヘッド３の移動が完了するように、制御手段が昇降手段１５を駆動するタイミングを設定する。   First, the building board 1 is placed on the roller conveyor 10 of the conveying means 2 and conveyed to the timing belt 11. Next, of the height of the painted surface (upper surface) of the building board 1 from the reference surface (for example, the upper surface of the timing belt 11) by the measuring device 16 while passing the measurement position in the vicinity of the measuring device 16. The maximum height in the width direction of the building board 1 is measured. Then, when the building board 1 finishes passing through the measurement position, the control means drives the elevating means 15 so that the painting head 3 and the reference surface face each other at an interval larger than the maximum height by a predetermined value. The head 3 is moved. Thereby, since the space | interval of the coating head 3 and a coating surface becomes more than predetermined (for example, 5 mm or more) at the time of the coating of the building board 1, the coating head 3 does not collide with the building board 1. FIG. It is also possible to sequentially convey a plurality of building boards 1 and sequentially coat each building board 1. In this case, after the painting of the building board 1 is completed by the painting head 3, the painting head 3. The control means drives the elevating means 15 so that the movement of the painting head 3 is completed before the other building board 1 to be painted reaches the painting position (position where the painting head 3 is installed). Set the timing.

そして、本発明では塗装ヘッド３からインクを下方の建築板１に向って噴出している時に、図１に矢印で示すように、送風手段２による送風を塗装ヘッド３の上方から行うと共に吸気手段５による吸気を搬送手段２のタイミングベルト１１の下側から行うものである。これにより、搬送手段２に載置された建築板１からの上昇気流とは反対向きの空気の流れを発生させて上昇気流の発生を抑えることができ、インクのミストの発生や建築板１によるインクの跳ね返りの発生を少なくし、塗装ヘッド３や建築板１の汚れを防止することができる。本発明では建築板１が全部の塗装ヘッド３を通過する間中、送風手段２による送風と吸気手段５による吸気とを常時行うのが好ましい。   In the present invention, when the ink is ejected from the painting head 3 toward the lower building board 1, as shown by the arrows in FIG. 5 is performed from the lower side of the timing belt 11 of the conveying means 2. As a result, it is possible to generate an air flow in a direction opposite to the upward airflow from the building board 1 placed on the conveying means 2 to suppress the generation of the upward airflow. The occurrence of ink splashing can be reduced, and the coating head 3 and the building board 1 can be prevented from being stained. In the present invention, while the building board 1 passes through all the coating heads 3, it is preferable to perform air blowing by the air blowing means 2 and air intake by the air intake means 5 at all times.

尚、本発明では、タイミングベルト１１の代わりに、ローラコンベアを用いることができ、この場合、多孔ベルト６の場合と同様に、吸気手段５による吸引作用をローラコンベアの上側の空間に及ぼすことができる。また、吸気手段５の両側にタイミングベルト１１を一基ずつ設けても良く、この場合も吸気手段５による吸引作用をタイミングベルト１１の上側の空間に及ぼすことができる。   In the present invention, a roller conveyor can be used instead of the timing belt 11. In this case, as in the case of the perforated belt 6, the suction action by the suction means 5 can be exerted on the space above the roller conveyor. it can. Further, one timing belt 11 may be provided on both sides of the intake means 5, and also in this case, the suction action by the intake means 5 can be exerted on the space above the timing belt 11.

本発明の実施の形態の一例を示し、一部が破断した概略の斜視図である。BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic perspective view which showed an example of embodiment of this invention and partly fractured | ruptured. 同上の全体を示し、（ａ）は概略の平面図、（ｂ）は概略の側面図である。The whole same as the above, (a) is a schematic plan view, and (b) is a schematic side view. 建築板からの上昇気流の発生状態を示す概略図である。It is the schematic which shows the generation | occurrence | production state of the updraft from a building board.

符号の説明Explanation of symbols

１ 建築板
２ 搬送手段
３ 塗装ヘッド
４ 送風手段
５ 吸気手段
６ 多孔ベルト DESCRIPTION OF SYMBOLS 1 Building board 2 Conveying means 3 Coating head 4 Blower means 5 Intake means 6 Porous belt

Claims (2)

建築板を載置した状態で搬送するための搬送手段と、搬送手段の上方に配置される塗装ヘッドとを備え、搬送手段で搬送される建築板の上面に対して塗装ヘッドからインクを噴射して塗装するための建築板の塗装装置において、塗装ヘッドからのインクの噴射時に下方に向って送風するための送風手段を塗装ヘッドの上方に設け、塗装ヘッドからのインクの噴射時に搬送手段の上側の空気を吸気するための吸気手段を搬送手段の下方に配設して成ることを特徴とする建築板の塗装装置。   The apparatus includes a conveying means for conveying the building board placed thereon and a coating head disposed above the conveying means, and ejects ink from the painting head to the upper surface of the building board conveyed by the conveying means. In the building board coating apparatus for painting, an air blowing means is provided above the painting head to blow downward when ink is ejected from the painting head, and above the conveying means when ink is ejected from the painting head. A building board coating apparatus, characterized in that air intake means for taking in the air is disposed below the conveying means. 搬送手段として多孔ベルトを用いて成ることを特徴とする請求項１に記載の建築板の塗装装置。
2. The building board coating apparatus according to claim 1, wherein a perforated belt is used as the conveying means.
JP2005317257A 2005-10-31 2005-10-31 Building board painting equipment Expired - Fee Related JP4778295B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009050803A (en) * 2007-08-28 2009-03-12 Panasonic Electric Works Co Ltd Plate-like construction material coating method
JP2010195008A (en) * 2009-02-27 2010-09-09 Mimaki Engineering Co Ltd Ink jet printer, ink jet head, and printing method
CN107225055A (en) * 2017-06-19 2017-10-03 安徽三山新材料科技有限公司 A kind of macromolecule medical bandage thermalization flush coater
CN112721444A (en) * 2020-12-15 2021-04-30 高成 High-stability color adjustable printing machine

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JPS62117661A (en) * 1985-11-19 1987-05-29 Tokyo Met Gov Koutaku Kakoshi Kyodo Kumiai Method and device for drying in sheet paper resin-finishing machine
JPH08187842A (en) * 1995-01-10 1996-07-23 Hitachi Ltd Ink jet recorder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62117661A (en) * 1985-11-19 1987-05-29 Tokyo Met Gov Koutaku Kakoshi Kyodo Kumiai Method and device for drying in sheet paper resin-finishing machine
JPH08187842A (en) * 1995-01-10 1996-07-23 Hitachi Ltd Ink jet recorder

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009050803A (en) * 2007-08-28 2009-03-12 Panasonic Electric Works Co Ltd Plate-like construction material coating method
JP2010195008A (en) * 2009-02-27 2010-09-09 Mimaki Engineering Co Ltd Ink jet printer, ink jet head, and printing method
CN107225055A (en) * 2017-06-19 2017-10-03 安徽三山新材料科技有限公司 A kind of macromolecule medical bandage thermalization flush coater
CN107225055B (en) * 2017-06-19 2019-02-22 安徽三山新材料科技有限公司 A kind of macromolecule medical bandage thermalization flush coater
CN112721444A (en) * 2020-12-15 2021-04-30 高成 High-stability color adjustable printing machine
CN112721444B (en) * 2020-12-15 2022-06-03 佛山市乐彩包装材料有限公司 High-stability color adjustable printing machine

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