JPH0376668A - Paper feed roller - Google Patents
Paper feed rollerInfo
- Publication number
- JPH0376668A JPH0376668A JP21254089A JP21254089A JPH0376668A JP H0376668 A JPH0376668 A JP H0376668A JP 21254089 A JP21254089 A JP 21254089A JP 21254089 A JP21254089 A JP 21254089A JP H0376668 A JPH0376668 A JP H0376668A
- Authority
- JP
- Japan
- Prior art keywords
- paper
- roller
- paper feed
- coat
- feed roller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003746 surface roughness Effects 0.000 claims abstract description 18
- 239000000843 powder Substances 0.000 claims abstract description 9
- 229910010293 ceramic material Inorganic materials 0.000 claims abstract description 5
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 2
- 229910017052 cobalt Inorganic materials 0.000 claims description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
- 239000002245 particle Substances 0.000 abstract description 6
- 239000000919 ceramic Substances 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000011261 inert gas Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 229910000531 Co alloy Inorganic materials 0.000 abstract 2
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 238000010285 flame spraying Methods 0.000 abstract 1
- 239000010432 diamond Substances 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 4
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000007751 thermal spraying Methods 0.000 description 2
- 208000032544 Cicatrix Diseases 0.000 description 1
- 229910009043 WC-Co Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 210000000436 anus Anatomy 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
Landscapes
- Delivering By Means Of Belts And Rollers (AREA)
- Handling Of Cut Paper (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は紙送りローラー、より詳しくは自動製図機の
用紙の移動等に使用される紙送りローラーに関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper feed roller, and more particularly to a paper feed roller used for moving paper in an automatic drafting machine.
第１図は、従来の自動製図機であり、用紙１の両側縁部
を上下から挟む紙送りローラー２、ガイドローラー３，
３が配設してあり、上面に記録ベン４が取付けである。FIG. 1 shows a conventional automatic drafting machine, in which paper feed rollers 2, guide rollers 3, which sandwich both side edges of paper 1 from above and below,
3 is provided, and a recording ben 4 is attached to the top surface.
この従来の紙送りローラーとしては、ローラー表面に粒
状のダイヤモンドを電着したものが知られている。しか
し、このローラーは材料がダイヤモンドであるために高
価となる。また、ダイヤモンド粒子の大きさ、形状を均
一にすることがむずかしく、ローラー表面の面粗度、お
よび粒子の角部尖鋭度のばらつきが大きくなり、紙送り
の精度が低下したり、用紙に損傷を与えたり、使用可能
な用紙が限定される等の問題点があった。As this conventional paper feed roller, one in which granular diamonds are electrodeposited on the surface of the roller is known. However, this roller is expensive because it is made of diamond. In addition, it is difficult to make the size and shape of the diamond particles uniform, and the surface roughness of the roller surface and the sharpness of the corners of the particles vary widely, reducing paper feeding accuracy and damaging the paper. There were problems such as limitations on the paper that could be given and used.
例えば、１枚の用紙に自動製図機で、１つの図を同一条
件で繰り返し製図すると、紙送りが不正確であるために
、第２図のように紙送り方向（図面横方向）に図がずれ
てしまい、正確に製図ができないという問題点が起こり
易かった。For example, if one drawing is repeatedly drawn on a sheet of paper using an automatic drawing machine under the same conditions, the paper feed will be inaccurate, and the drawing will appear in the paper feed direction (horizontal direction of the drawing) as shown in Figure 2. This tends to cause problems such as misalignment and the inability to draw accurately.
この発明は上記問題点の解消を図ったものであり、紙送
り精度の向上、使用可能な用紙範囲の拡大を図ることが
でき、かつコストが安価である紙送りローラーを提案す
るにある。The present invention aims to solve the above-mentioned problems and proposes a paper feeding roller that can improve paper feeding accuracy, expand the range of usable paper, and is inexpensive.
この紙送りローラーは表面にタングステンカーバイド・
コバルト超硬合金またはセラミック材料粉末を溶射し皮
膜を形成してなり、この皮膜は面粗度（Ｒｍａｘ）が５
（１μｍ −１２０ｔ−ｔｍであることを特徴とする
。This paper feed roller has a tungsten carbide surface.
Cobalt cemented carbide or ceramic material powder is thermally sprayed to form a coating, and this coating has a surface roughness (Rmax) of 5.
(It is characterized by being 1 μm-120t-tm.
この発明で用いるタングステンカーバイド・コバル）（
ＷＣ−Ｃｏ）超硬合金としては、般に超硬合金焼結体と
して用いられる組成のものが利用でき、またセラミック
材料としてはアルミナ（Ａ Ｒ２０３）などが利用でき
る。この超硬合金またはセラミック材料粉末はプラズマ
ジェットによりローラー表面に溶射して皮膜を形成する
。Tungsten carbide Kobal) used in this invention (
As the cemented carbide (WC-Co), one having a composition generally used as a cemented carbide sintered body can be used, and as the ceramic material, alumina (AR203) or the like can be used. This cemented carbide or ceramic material powder is thermally sprayed onto the roller surface using a plasma jet to form a film.
すなわち、第３図のごとく、プラズマジェット溶射装置
５で発生させた不活性ガスの超高温プラズマジェット中
にＷＣ−Ｃ，超硬合金またはセラミックの粉末材料６を
送り込み、溶融させ、この溶融粒子７を速い流速で、回
転しているローラー８の表面に衝突、密着させて肛・Ｃ
０超硬合金またはセラミックの皮膜を形成する。That is, as shown in FIG. 3, WC-C, cemented carbide, or ceramic powder material 6 is fed into an ultra-high temperature plasma jet of inert gas generated by a plasma jet thermal spraying device 5 and melted, and the molten particles 7 collides with the surface of the rotating roller 8 at a high flow rate, brings it into close contact with the anus/C
0 Forms a cemented carbide or ceramic film.
このようにして形成した皮膜の表面は細い凹凸が均一に
分散した面となる。この発明になる紙送りローラーの面
粗度、（Ｒｍａｘ）はＪＩＳＢＯ６０１−１９７０に規
定された最大高さで示したものである。すなわち皮膜表
面の凹凸の最低と最高との高さの差は（Ｒｍａｘ）基準
の長さ間で５０μｍ〜１２０μｍの範囲でなくてはなら
ない。面粗度が５０μｍ未満では平滑で摩擦係数が小さ
く紙送りローラーとして不適当であり、１２０μｍ以上
では紙送り精度の低下を招くと同時に紙に損傷を与える
など好ましくない。The surface of the film thus formed has fine irregularities uniformly dispersed therein. The surface roughness (Rmax) of the paper feed roller according to the present invention is expressed by the maximum height specified in JISBO601-1970. That is, the difference in height between the lowest and highest unevenness on the film surface must be in the range of 50 μm to 120 μm between the standard lengths (Rmax). If the surface roughness is less than 50 μm, it is smooth and has a small coefficient of friction, making it unsuitable for use as a paper feed roller, while if it is 120 μm or more, it is undesirable as it causes a decrease in paper feed accuracy and damages the paper.
第３図に示す方法で、ローラー表面にＷＣ−Ｃ０超硬合
金またはセラミックの皮膜を条件を変え形成し、面粗度
の異なる紙送りローラーをつくりその表面粗度を求めた
。その結果を第４図（ａ）。Using the method shown in FIG. 3, WC-C0 cemented carbide or ceramic coatings were formed on the roller surface under different conditions to create paper feed rollers with different surface roughnesses, and their surface roughnesses were determined. The results are shown in Figure 4(a).
（ｂ）、 （Ｃ）、 （ｄ）、 （ｅ）、 （ｆ）、
（ｇ）ｌ：示ｔ。、：：の図はｍ軸に面の粗さ（凹凸面
の高さ）、横軸にローラー周方向移動距離をとり、移動
距離９ｍｍにおける凹凸面の高さの差を面粗度とした。(b), (C), (d), (e), (f),
(g) l: Show t. , :: In the figure, the m-axis shows the surface roughness (height of the uneven surface), the horizontal axis shows the moving distance of the roller in the circumferential direction, and the difference in height of the uneven surface at a moving distance of 9 mm is defined as the surface roughness.
各図における面粗度は、（ａ）図約４０μｍ、（ｂ）図
約５ Ｑ μｍ、 （Ｃ）図約６０μｍ、（ｄ）図約９
０μｍ。The surface roughness in each figure is (a) about 40 μm, (b) about 5 Q μm, (C) about 60 μm, (d) about 9
0μm.
（ｅ）図約１１０ μｍ、 （ｆ）図約１２０μｍ、（
１１０図約１４０μｍであった。(e) Figure approximately 110 μm, (f) Figure approximately 120 μm, (
The diameter was about 140 μm.
上記のわ）、 （Ｃ）、 （山、 （ｅ）、 （ｆ）図
の面粗度をもったローラー、すなわち面粗度５０〜１２
０μｍのこの発明になる、紙送りローラーは紙厚３５〜
７０μｍの和紙、上質紙、トレーシング用紙（通常、製
図用紙として用いるものの殆どすべて〉に対し、精度高
く紙送りし、正確な製図ができた。これに対しくａ）、
（１１１０図の面粗度のローラ、すなわち面粗度が４
０μｍおよび１４０μｍの紙送りローラーは紙送りの精
度が低く、同一条件で製図を２度繰り返すと第２図のご
とく図がずれて正確な製図ができなかった。また、この
発明になる紙送りローラーはダイヤモンド粒子電着ロー
ラーに比べ凹凸面に極端な鋭角部分がなく、用紙送りの
際の傷跡が認められなかった。Rollers with the surface roughness shown in the above figures), (C), (mountain, (e), (f), that is, the surface roughness is 50 to 12
The paper feed roller of this invention, which has a thickness of 0 μm, has a paper thickness of 35~
We were able to feed the paper with high precision and make accurate drawings on 70 μm Japanese paper, high-quality paper, and tracing paper (almost all the paper that is normally used as drafting paper).In contrast, a)
(The roller with the surface roughness in Figure 1110, that is, the surface roughness is 4
The 0 μm and 140 μm paper feed rollers had low paper feeding accuracy, and when drawing was repeated twice under the same conditions, the drawings shifted as shown in FIG. 2, making accurate drawings impossible. Furthermore, the paper feed roller of the present invention had no extremely acute angles on its uneven surface compared to the diamond particle electrodeposition roller, and no scars were observed during paper feed.
この発明は以上の通りであり、この紙送りローラーは紙
送りの精度が高く、自動製図機に用いると図面精度の向
上を図ることができ、用紙に傷をつける恐れもなく、広
範囲の用紙の使用を可能とした。またダイヤモンド電着
ローラーに比べ、コストの低減が達成された。This invention is as described above, and this paper feed roller has high paper feed accuracy, and when used in an automatic drafting machine, it can improve drawing accuracy, and there is no fear of damaging the paper, and it can handle a wide range of paper. made possible to use. Furthermore, cost reduction was achieved compared to diamond electrodeposition rollers.
第１図は自動製図機の紙送り部分の斜視図、第２図は繰
り返し製図により、ずれた図面の平面図、第３図はプラ
ズマジェット溶射装置によりＷＣ−Ｃ，またはセラミッ
クを溶射してローラー表面に皮膜を形成する状態の斜視
図、第４図（ａ）、 （ｂ）、 （Ｃ）、 （ｄ）、
（ｅ）、 （ｆ）、 （ｇ）はそれぞれ実施例のローラ
ーの面の粗さとローラー移動距離との相関グラフである
。
１・・・・・・用紙、２・・・・・・紙送りローラー、
３・・・・・・ガイドローラー、４・・・・・・記録ペ
ン、５・・・・・・フラズマジェッ
ト溶射装置、
６・・・・・・粉末材料、
７・・・
溶融粒子、
８・・・・・・ローラー
（ａ）
第
図
（ｂ）
（Ｃ）
移動距離（閣）
移動距離（騙）Figure 1 is a perspective view of the paper feeding part of an automatic drafting machine, Figure 2 is a plan view of the drawing that has shifted due to repeated drafting, and Figure 3 is a roller with WC-C or ceramic sprayed using a plasma jet spraying device. Perspective views of the state in which a film is formed on the surface, Fig. 4 (a), (b), (C), (d),
(e), (f), and (g) are correlation graphs between the surface roughness of the roller and the roller moving distance, respectively, in Examples. 1...Paper, 2...Paper feed roller,
3... Guide roller, 4... Recording pen, 5... Flame jet thermal spraying device, 6... Powder material, 7... Molten particles, 8...Roller (a) Diagram (b) (C) Distance traveled (Kaku) Distance traveled (Kaku)
Claims (2)
金粉末を溶射し皮膜を形成してなり、この皮膜は面粗度
（Ｒｍａｘ）が５０μｍ〜１２０μｍであることを特徴
とする紙送りローラー。(1) A paper feed roller characterized in that a coating is formed by spraying tungsten carbide/cobalt cemented carbide powder on the surface, and the coating has a surface roughness (Rmax) of 50 μm to 120 μm.
てなり、この皮膜は面粗度（Ｒｍａｘ）が５０μｍ〜１
２０μｍであることを特徴とする紙送りローラー。(2) A film is formed by spraying ceramic material powder on the surface, and this film has a surface roughness (Rmax) of 50 μm to 1
A paper feed roller characterized by having a diameter of 20 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21254089A JPH0376668A (en) | 1989-08-18 | 1989-08-18 | Paper feed roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21254089A JPH0376668A (en) | 1989-08-18 | 1989-08-18 | Paper feed roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0376668A true JPH0376668A (en) | 1991-04-02 |
Family
ID=16624368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21254089A Pending JPH0376668A (en) | 1989-08-18 | 1989-08-18 | Paper feed roller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0376668A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132932U (en) * | 1991-05-30 | 1992-12-10 | 三菱重工業株式会社 | Corrugated roll for corrugating corrugated cardboard |
| WO1999022041A1 (en) * | 1997-10-27 | 1999-05-06 | Btg Eclepens S.A. | Device for producing a coating bar for use in the paper industry |
| JP2008044739A (en) * | 2006-08-17 | 2008-02-28 | Toshiba Corp | Paper sheet thickness detecting device |
-
1989
- 1989-08-18 JP JP21254089A patent/JPH0376668A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04132932U (en) * | 1991-05-30 | 1992-12-10 | 三菱重工業株式会社 | Corrugated roll for corrugating corrugated cardboard |
| WO1999022041A1 (en) * | 1997-10-27 | 1999-05-06 | Btg Eclepens S.A. | Device for producing a coating bar for use in the paper industry |
| US6761768B2 (en) * | 1997-10-27 | 2004-07-13 | Btg Eclepens S.A. | Device for producing a coating rod for use in the paper industry |
| JP2008044739A (en) * | 2006-08-17 | 2008-02-28 | Toshiba Corp | Paper sheet thickness detecting device |
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