JP2010214840A - Endless printing belt for rotary stamp - Google Patents

Endless printing belt for rotary stamp Download PDF

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JP2010214840A
JP2010214840A JP2009065714A JP2009065714A JP2010214840A JP 2010214840 A JP2010214840 A JP 2010214840A JP 2009065714 A JP2009065714 A JP 2009065714A JP 2009065714 A JP2009065714 A JP 2009065714A JP 2010214840 A JP2010214840 A JP 2010214840A
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belt
endless printing
printing belt
pedestal
endless
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Naoyuki Fujiwara
直幸 藤原
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Shachihata Inc
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Shachihata Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein in a conventional endless printing belt for a rotary stamp, only a bent face between pedestals or chamfering of a flat face cannot sufficiently reduce stress concentration on a crossing square part, thus, causing cracks on the cross square part due to use for a long time. <P>SOLUTION: In this endless printing belt for a rotary stamp having a plurality of pedestals and printing portions formed on a belt base material, intervals between the pedestals are formed to have an approximately circular shape. The endless printing belt for the rotary stamp comprises a porous material including continuous air bubbles. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

本発明は、回転印に使用される無端印字ベルトに関するものであって、特に、浸透印タイプの回転印に使用される連続気泡を有する多孔質材を用いた無端印字ベルトにも用いられるものである。   The present invention relates to an endless printing belt used for a rotation mark, and particularly to an endless printing belt using a porous material having open cells used for a permeation mark type rotation mark. is there.

数字や英字からなる印字体を台座の上に形成した無端印字ベルトを橋架片に引張屈曲させて架設した回転印としては、実公昭37−2515号等が知られており、連続気泡を有する多孔質材を用いた無端印字ベルトを架設した回転印としては、特公昭47−046786号、実開昭49−124111号、特開昭53−009630号等が知られている。
従来の無端印字ベルトは、ベルト基材に台座を立設しているが、その交差角部は直角に近い角度でシャープに交差されているため、ベルトを回転させている最中に交差角部に相当大きい応力が集中し、ここから亀裂が発生して台座がベルト基材から剥離してしまうことがあった。特に、印材として多孔質材を使用した場合は、素材強度が弱いので一層亀裂が発生しやすかった。
そこで、ベルト基材と台座の交差角部を比較的大なる湾曲面もしくは扁平面の面とりを施してなる無端印字ベルトが考案され、実開昭58−039873号として公開された。当該考案は、橋架片に引張屈曲させて架設した無端印字ベルトが、交差角部の応力集中を減少して亀裂の発生を防止するように構成されている。
Japanese Utility Model Publication No. 37-2515 is known as a rotation mark in which an endless printing belt in which a printing body made up of numbers and letters is formed on a pedestal is stretched and bent on a bridge piece. Japanese Patent Publication No. 47-046786, Japanese Utility Model Laid-Open No. 49-124111, Japanese Patent Laid-Open No. 53-009630, and the like are known as rotational marks provided with an endless printing belt using a material.
Conventional endless printing belts have pedestals erected on the belt base material, but the crossing corners intersect sharply at an angle close to a right angle, so the crossing corners while the belt is rotating. In this case, a considerable stress was concentrated on the surface of the belt base material, and a crack was generated from the surface to cause the base to peel off from the belt base material. In particular, when a porous material was used as the stamp, cracks were more likely to occur because the material strength was weak.
In view of this, an endless printing belt having a relatively large curved surface or flat surface chamfered at the intersection angle between the belt base and the pedestal has been devised and published as Japanese Utility Model Publication No. 58-039873. According to the present invention, an endless printing belt that is stretched and bent on a bridge piece is configured to reduce the stress concentration at the crossing corners and prevent the occurrence of cracks.

特公昭47−046786号公報Japanese Examined Patent Publication No. 47-046786 実開昭49−124111号公報Japanese Utility Model Publication No. 49-124111 特開昭53−009630号公報JP-A-53-009630 実開昭58−039873号公報Japanese Utility Model Publication No. 58-039873

しかし、実開昭58−039873号による湾曲面もしくは扁平面の面とりだけでは、交差角部の応力集中を十分に減少させることができず、長期間にわたる使用によって交差角部に亀裂を生じさせていた。   However, the curved surface or flat chamfered surface of Japanese Utility Model Publication No. 58-039873 alone cannot sufficiently reduce the stress concentration at the crossing corner, and it will cause cracks at the crossing corner by long-term use. It was.

ベルト基材上に複数の台座及び印字部を形成した回転印用無端印字ベルトにおいて、台座と台座の間隔を略円形に形成してなることを特徴とする回転印用無端印字ベルト。また、前記回転印用無端印字ベルトが連続気泡を有する多孔質材で構成されている回転印用無端印字ベルト。   An endless printing belt for rotating marks, in which a plurality of pedestals and printing portions are formed on a belt base material, wherein the interval between the pedestal and the pedestal is formed in a substantially circular shape. Further, the endless printing belt for rotation marking is composed of a porous material having open cells.

従来は台座と台座の間に水平状態で存在していたベルト基材が、本発明回転印用無端印字ベルトでは常に曲線状態を保った状態で存在している。
よって、交差角部の応力集中を完全に無くし、長期間にわたる使用によっても交差角部に亀裂を生じさせることがない。
Conventionally, the belt base material that has existed in a horizontal state between the pedestal and the pedestal always exists in a curved state in the endless printing belt for rotary stamping of the present invention.
Therefore, the stress concentration at the crossing corner is completely eliminated, and the crossing corner is not cracked even when used for a long time.

以下、本発明を実施するための最良の形態について説明する。
本発明の無端印字ベルトは、熱硬化性樹脂や熱可塑性樹脂などの素材、加硫剤、充填剤、添加剤、気泡形成材等を混練した後シート化したマスターバッチを、所要の台座と印字部を凹状に彫刻した金型に収容し、更にその上面に化学繊維や綿などの補強布を重ねて加圧加熱し、その後離型して金型の彫刻通りに凸状に形成された板状の中間体を製造し、次に中間体の一方の端と他方の端を接着して無端環状体とし、これを所要幅に切断して得られる。
金型は、台座と台座の間に水平になる部分ができないように、真円或いは楕円又はその組み合わせといった凸状の略円形に彫刻することが必須である。これにより、完成した無端印字ベルトの台座と台座が結ばれるベルト基材の部分は、直角に近いシャープな交差角部や水平部分が形成されず、凹状の真円或いは楕円又はその組み合わせといった略円形が形成される。
また、本発明の無端印字ベルトは、非多孔質材であっても多孔質材であっても前述の効果を発揮するが、一般的に連続気泡を有する多孔質材の方が強度が弱いため、多孔質材に本発明の構成を採用した場合の方が亀裂が発生しない恩恵を受けるものと思われる。
Hereinafter, the best mode for carrying out the present invention will be described.
The endless printing belt of the present invention comprises a master batch that is made into a sheet after kneading a material such as a thermosetting resin or a thermoplastic resin, a vulcanizing agent, a filler, an additive, a bubble forming material, etc. A plate that is housed in a mold engraved with a concave shape, and is further heated under pressure by overlaying a reinforcing fabric such as chemical fiber or cotton on its upper surface, and then released to form a convex shape as engraved on the mold An intermediate body is manufactured, and then one end and the other end of the intermediate body are bonded to form an endless annular body, which is cut to a required width.
It is essential that the mold is engraved into a convex substantially circular shape such as a perfect circle, an ellipse, or a combination thereof so that there is no horizontal portion between the pedestal. As a result, the portion of the belt base material where the pedestal of the completed endless printing belt is connected to the pedestal is not formed with a sharp intersection angle portion or a horizontal portion close to a right angle, but a substantially circular shape such as a concave perfect circle or an ellipse or a combination thereof. Is formed.
In addition, the endless printing belt of the present invention exhibits the above-described effect regardless of whether it is a non-porous material or a porous material, but generally a porous material having open cells is weaker in strength. In the case where the configuration of the present invention is adopted for the porous material, it is considered that the benefit of not generating cracks is obtained.

本発明で用いることができる素材としては、熱硬化性樹脂や熱可塑性樹脂が用いられる。熱硬化性樹脂としては、天然ゴム、ブタジエン−スチレン共重合体、ブタジエン−アクリロニトリル共重合体、クロロプレン、ポリウレタンゴム、エチレン−プロピレン−ジエンゴム等などを用いることができる。熱可塑性樹脂としては、ポリエチレン、ポリプロピレン、ポリブチレン、ポリウレタン、ポリスチレン、ポリ塩化ビニル、ポリエステル、ポリカーボネート、ポリエチレン系熱可塑性エラストマー、ポリプロピレン系熱可塑性エラストマー、ポリブチレン系熱可塑性エラストマー、ポリウレタン系熱可塑性エラストマー、ポリスチレン系熱可塑性エラストマー、ポリジエン系熱可塑性エラストマー、ポリ塩化物系熱可塑性エラストマー、エチレン酢酸ビニル共重合樹脂などを用いることができる。
本発明において素材としてゴム系素材を用いる場合は、硫黄、セレン、テルル、塩化イオウなどの公知の加硫剤が用いられる。その使用比率は素材100部に対して2〜30部程度使用する。
本発明においては必要に応じて充填剤が用いられる。使用可能な充填剤としては、公知のカーボンブラック、微粉ケイ酸、人工ケイ酸塩、炭酸カルシルムなどがあり、とりわけカーボンブラックはゴムと強力な結合をするので好ましい。その使用比率は素材100部に対して約40〜60部程度使用する。
さらに、本発明においては通常使用されている添加物を使用することができる。例えば、アミン類などの老化防止剤、エチレングリコール・ジエチレングリコール・トリエチレングリコール・ポリエチレングリコール・プロピレングリコール・ジプロピレングリコール・トリプロピレングリコール・ポリプロピレングリコール・グリセリン・ワセリン・可塑剤・プロセスオイルなどの軟化剤、ステアリン酸・亜鉛華などの加硫助剤、グアニジン類・チアゾール類・チラウム類・スルフェンアミド類・ジチオカルバミン酸塩類などの加硫促進剤などを有効量添加することができる。
また、本発明の無端印字ベルトを多孔質材とする場合は、気泡形成剤を配合する。気泡形成剤としては、塩化ナトリウムや塩化カルシウム等のアルカリ金属塩、ペンタエリスリトールなどを用いることができ、2〜100μmの粒径のものが好ましく用いられる。
本発明では補強材によって補強しても良い。しかし、補強材は必須構成要素ではなく、無端印字ベルトの補強が必要な場合のみ使用すれば良いのであって、必ずしも必要となるものではない。補強材を使用する場合は、厚み0.5mm以下の織編物が主に用いられる。材質としては、主に綿、絹、羊毛、アセテート、ビニロン、ビニリデン、ポリ塩化ビニル、アクリル、ポリプロピレン、ポリエチレン、ポリウレタン、フッ素系フィラメント、ポリクラール、レーヨン、ナイロン、ポリエステルなどの繊維を平織り布や綾織り布、各種編物布や不織布とした布を用いることができる。特に、極微細繊維といわれる繊度1d以下の合成繊維を使用した織編物は、耐インキ性、インキの流通性、強度、ほつれ、耐熱性、接着性、回転性、耐久性などに優れているので、最も好ましい。例えば、シルフローラX(商品名:東洋紡績株式会社製)、ザヴィーナミニマックス、クラウゼンMCF、ベルセイムハイテクロス(商品名:KBセーレン株式会社製)がある。
As a material that can be used in the present invention, a thermosetting resin or a thermoplastic resin is used. As the thermosetting resin, natural rubber, butadiene-styrene copolymer, butadiene-acrylonitrile copolymer, chloroprene, polyurethane rubber, ethylene-propylene-diene rubber, or the like can be used. As thermoplastic resins, polyethylene, polypropylene, polybutylene, polyurethane, polystyrene, polyvinyl chloride, polyester, polycarbonate, polyethylene-based thermoplastic elastomer, polypropylene-based thermoplastic elastomer, polybutylene-based thermoplastic elastomer, polyurethane-based thermoplastic elastomer, polystyrene-based Thermoplastic elastomers, polydiene thermoplastic elastomers, polychloride thermoplastic elastomers, ethylene vinyl acetate copolymer resins, and the like can be used.
In the present invention, when a rubber material is used as a material, a known vulcanizing agent such as sulfur, selenium, tellurium, sulfur chloride is used. The usage ratio is about 2 to 30 parts per 100 parts of the material.
In the present invention, a filler is used as necessary. Usable fillers include known carbon black, finely divided silicic acid, artificial silicate, calcium carbonate, and the like. Carbon black is particularly preferable because it has a strong bond with rubber. The usage ratio is about 40 to 60 parts per 100 parts of the material.
Furthermore, the additive normally used in this invention can be used. For example, anti-aging agents such as amines, softeners such as ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, glycerin, petroleum jelly, plasticizer, process oil, Effective amounts of vulcanization aids such as stearic acid and zinc white, and vulcanization accelerators such as guanidines, thiazoles, thylliums, sulfenamides and dithiocarbamates can be added.
When the endless printing belt of the present invention is a porous material, a bubble forming agent is blended. As the bubble forming agent, alkali metal salts such as sodium chloride and calcium chloride, pentaerythritol and the like can be used, and those having a particle diameter of 2 to 100 μm are preferably used.
In this invention, you may reinforce with a reinforcing material. However, the reinforcing material is not an essential component and may be used only when the endless printing belt needs to be reinforced, and is not necessarily required. When a reinforcing material is used, a woven or knitted fabric having a thickness of 0.5 mm or less is mainly used. The materials are mainly cotton, silk, wool, acetate, vinylon, vinylidene, polyvinyl chloride, acrylic, polypropylene, polyethylene, polyurethane, fluorine filament, polyclar, rayon, nylon, polyester, etc. Cloth, various knitted fabrics, and non-woven fabrics can be used. In particular, woven and knitted fabrics using synthetic fibers with a fineness of 1d or less, called ultrafine fibers, are excellent in ink resistance, ink flowability, strength, fraying, heat resistance, adhesiveness, rotation, durability, etc. Most preferred. For example, Silflora X (trade name: manufactured by Toyobo Co., Ltd.), Xavina Minimax, Klausen MCF, and Versame Hightecloth (trade name: manufactured by KB Seiren Co., Ltd.) are available.

本発明無端印字ベルトを作成する際の金型は、ベルト基材の部分を彫刻し、次に台座を彫刻し、次に印字部を一番深く彫刻してなる。台座と台座の間隔の部分に水平になる部分ができないように、真円或いは楕円又はその組み合わせといった凸状の略円形に彫刻する。
これにより、完成した無端印字ベルトの台座と台座が結ばれるベルト基材の部分は、直角に近いシャープな交差角部や水平部分が形成されず、凹状の真円或いは楕円又はその組み合わせといった略円形が形成される。
本発明では、台座と台座の間隔に水平部分ができないよう略円形の凹状を形成することが目的であるので、金型による無端印字ベルトの形成に限定されない。例えば、加熱した丸金棒を直接押し当てて該当部分を溶融して略円形を形成する方法、炭酸ガスレーザやYAGレーザといった各種レーザ光を用いて該当部分を加熱昇華して略円形を形成する方法なども用いることができる。
The mold for producing the endless printing belt of the present invention is formed by engraving the belt base material, then engraving the base, and then engraving the printing portion deepest. Engraving into a substantially circular shape such as a perfect circle, an ellipse, or a combination thereof so that there is no horizontal part between the pedestal and the pedestal.
As a result, the portion of the belt base material where the pedestal of the completed endless printing belt is connected to the pedestal is not formed with a sharp intersection angle portion or a horizontal portion close to a right angle, but a substantially circular shape such as a concave perfect circle or an ellipse or a combination thereof. Is formed.
In the present invention, the purpose is to form a substantially circular concave shape so that there is no horizontal portion between the pedestal and the pedestal, and therefore, the present invention is not limited to the formation of an endless print belt by a mold. For example, a method of forming a substantially circular shape by directly pressing a heated round metal rod to melt the corresponding portion, a method of forming a substantially circular shape by heating and sublimating the corresponding portion using various laser beams such as a carbon dioxide laser and a YAG laser, etc. Can also be used.

以下、本発明を実施例により更に詳細に説明する。しかしながら、本発明はこれら実施例により何等限定されるものではない。
(実施例)
ブタジエン−アクリロニトリル共重合体(NBR)100部に対し重量比で硫黄3.5部、亜鉛華5部、加硫促進剤5部、ワセリン、DBP等からなる軟化剤30部、カーボンブラック50部、老化防止剤2部、80〜100メッシュ(0.149〜0.176mm)の塩化ナトリウム微粉末800部、150〜250メッシュ(0.062〜0.103mm)のバレイショデンプン微粉末及びサッカロース微粉末各100部を加え混練し、厚さ2.5mmの未加硫シートを作成した。
これをベルト基材部分が0.5mm・台座部分が1mm・印字部部分が1mmの深さに文字等を彫り込み、台座と台座の間を半径1mmの真円凸状に形成した金型に収容し、100番手の双糸を縦150本/インチ、横100本/インチの密度の平織りにした綿布をのせ、200kg/cm2の圧力を加えて150℃の温度下で15分間加硫した後、離型して塩化ナトリウムおよび糖を水洗いして完全に洗除し、更に脱水乾燥したところ、連続気泡を有する多孔質材で構成される中間体を得た。
次に、中間体の一方の端のゴムを剥がした接着部に、ゴム溶剤に溶かした未加硫ゴムを塗布した後、他方の端の接着部と加硫接着して無端環状体を得て、これを所要幅に切断し、ベルト基材部分が0.5mm・台座部分が1mm・印字部部分が1mmであって台座と台座の間が半径1mmの真円凹状に形成された多孔質無端印字ベルトを得た。
このようにして得られた無端印字ベルトに400cps(25℃)の高粘度の染料系インキを吸蔵させたところ、インキ吸蔵量も充分で、にじみやかすれのない鮮明な印影が得られた。
また、回転印に組み付けたところ、スムーズな回転を長期間維持することができ、かつ、比較的強い張力で無端印字ベルトを架橋しても長期間交差角部に亀裂が入ることはなかった。
Hereinafter, the present invention will be described in more detail with reference to examples. However, the present invention is not limited to these examples.
(Example)
3.5 parts by weight of sulfur with respect to 100 parts of butadiene-acrylonitrile copolymer (NBR), 5 parts of zinc white, 5 parts of vulcanization accelerator, 30 parts of softener comprising petrolatum, DBP, etc., 50 parts of carbon black, Anti-aging agent 2 parts, 80-100 mesh (0.149-0.176 mm) sodium chloride fine powder 800 parts, 150-250 mesh (0.062-0.103 mm) potato starch fine powder and sucrose fine powder each 100 parts were added and kneaded to prepare an unvulcanized sheet having a thickness of 2.5 mm.
This is engraved in a die that has a belt base part of 0.5mm, a pedestal part of 1mm, and a printing part of 1mm in depth, and the space between the pedestal and the pedestal is formed into a perfect circle with a radius of 1mm. Then, a cotton cloth in which a 100 count twin yarn is made into a plain weave with a density of 150 pieces / inch in length and 100 pieces / inch in width is placed and vulcanized at a temperature of 150 ° C. for 15 minutes by applying a pressure of 200 kg / cm 2. After releasing the mold, the sodium chloride and sugar were washed thoroughly with water and further dehydrated and dried to obtain an intermediate composed of a porous material having open cells.
Next, an unvulcanized rubber dissolved in a rubber solvent is applied to the adhesive portion where the rubber at one end of the intermediate body has been peeled off, and then vulcanized and bonded to the adhesive portion at the other end to obtain an endless annular body. This is cut into the required width, the belt base part is 0.5mm, the pedestal part is 1mm, the printing part is 1mm, and the porous endless shape is formed in the shape of a perfect circle with a radius of 1mm between the pedestal and the pedestal A printing belt was obtained.
When the dye-based ink having a high viscosity of 400 cps (25 ° C.) was occluded in the endless printing belt thus obtained, the ink occlusion amount was sufficient, and a clear imprint without blurring or blurring was obtained.
In addition, when assembled on the rotation mark, smooth rotation could be maintained for a long period of time, and even if the endless print belt was bridged with a relatively strong tension, cracks did not occur at the crossing corners for a long period of time.

従来の無端印字ベルトの一部切り欠き図Partial cutaway view of a conventional endless printing belt 本実施例で使用する金型の断面図Sectional view of the mold used in this example 本実施例の無端印字ベルトの一部切り欠き図Partial cutaway view of endless printing belt of this embodiment 本実施例の回転印の一部拡大図Partial enlarged view of the rotation mark of this embodiment

1 金型の上型
2 金型の下型
3 ベルト基材
4 台座
5 印字部
1 Mold upper mold 2 Mold lower mold 3 Belt base 4 Base 5 Printing section

Claims (2)

ベルト基材上に複数の台座及び印字部を形成した回転印用無端印字ベルトにおいて、台座と台座の間隔を略円形に形成してなることを特徴とする回転印用無端印字ベルト。   An endless printing belt for rotating marks, in which a plurality of pedestals and printing portions are formed on a belt base material, wherein the interval between the pedestal and the pedestal is formed in a substantially circular shape. 前記回転印用無端印字ベルトが連続気泡を有する多孔質材で構成されている請求項1に記載の回転印用無端印字ベルト。   The endless printing belt for rotating marks according to claim 1, wherein the endless printing belt for rotating marks is made of a porous material having open cells.
JP2009065714A 2009-03-18 2009-03-18 Endless printing belt for rotary stamp Pending JP2010214840A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013043369A (en) * 2011-08-24 2013-03-04 Shachihata Inc Porous rubber endless print belt

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839873U (en) * 1981-09-10 1983-03-16 サンビ−株式会社 rotation mark
JPH10337940A (en) * 1997-06-09 1998-12-22 Sato:Kk Printing endless band and its manufacture

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5839873U (en) * 1981-09-10 1983-03-16 サンビ−株式会社 rotation mark
JPH10337940A (en) * 1997-06-09 1998-12-22 Sato:Kk Printing endless band and its manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013043369A (en) * 2011-08-24 2013-03-04 Shachihata Inc Porous rubber endless print belt

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