JPH0114589Y2 - - Google Patents
Info
- Publication number
- JPH0114589Y2 JPH0114589Y2 JP1982123948U JP12394882U JPH0114589Y2 JP H0114589 Y2 JPH0114589 Y2 JP H0114589Y2 JP 1982123948 U JP1982123948 U JP 1982123948U JP 12394882 U JP12394882 U JP 12394882U JP H0114589 Y2 JPH0114589 Y2 JP H0114589Y2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- feed roll
- friction plate
- paper feed
- automatic
- 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.)
- Expired
Links
- 238000003780 insertion Methods 0.000 claims description 13
- 230000037431 insertion Effects 0.000 claims description 13
- 238000010586 diagram Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 2
Landscapes
- Sheets, Magazines, And Separation Thereof (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は自動給紙装置に関するもので、詳しく
は、用紙載置台上に積み重ねられた用紙の端部の
給紙ロールと摩擦板との間に臨ませ、給紙ロール
と用紙間、用紙相互間および用紙と摩擦板間の摩
擦係数の差を利用して用紙を一枚づつ分離排出す
る自動給紙装置に関するものである。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an automatic paper feeding device, and more specifically, the invention relates to an automatic paper feeding device. The present invention relates to an automatic paper feeding device that separates and discharges paper sheets one by one by utilizing differences in friction coefficients between a paper feed roll and paper sheets, between paper sheets, and between paper sheets and a friction plate.
第１図は従来の自動給紙装置を概念的に示した
ものである。この自動給紙装置１は装置フレーム
２等から延設させた板バネ３の自由端に摩擦板４
を配設し、この摩擦板４を板バネ３の弾性力によ
つて給紙ロール５に当接させたもので、平板状の
摩擦板４を給紙ロール５に接触させている。
FIG. 1 conceptually shows a conventional automatic paper feeder. This automatic paper feeder 1 has a friction plate 4 attached to the free end of a plate spring 3 extending from an apparatus frame 2, etc.
This friction plate 4 is brought into contact with the paper feed roll 5 by the elastic force of the leaf spring 3, and the flat friction plate 4 is brought into contact with the paper feed roll 5.
このような自動給紙装置１では、給紙ロール５
と用紙６間、用紙６，６相互間および用紙６と摩
擦板４間の摩擦係数μ1，μ2，μ3がそれぞれμ1＞μ3
＞μ2となるように給紙ロール５および摩擦板４の
材質を選定し、給紙ロール５を矢印Ａ方向に回転
することによつて用紙載置台７上の用紙６を給紙
ロール５と摩擦板４間を通過させ、その間に給紙
ロール５、用紙６および摩擦板４間の摩擦抵抗を
利用して給紙ロール５に接している用紙６ａのみ
を装置本体側（矢印Ｂ方向）に排出（次の処理部
へ供給）している。このような自動給紙装置１で
は、摩擦板４が給紙ロール５に極めて狭い範囲で
接触しているため、十分な給紙力を得られず、か
つ用紙間の分離も確実ではなかつた。 In such an automatic paper feeder 1, the paper feed roll 5
The friction coefficients μ 1 , μ 2 , μ 3 between the paper 6 and the paper 6, between the paper 6 and the friction plate 4, and between the paper 6 and the friction plate 4 are μ 1 > μ 3 , respectively.
> μ 2 , and by rotating the paper feed roll 5 in the direction of arrow A, the paper 6 on the paper mounting table 7 is transferred to the paper feed roll 5. The paper 6a is passed between the friction plates 4, and by using the frictional resistance between the paper feed roll 5, the paper 6, and the friction plate 4, only the paper 6a that is in contact with the paper feed roll 5 is moved toward the main body of the apparatus (in the direction of arrow B). It is being discharged (supplied to the next processing section). In such an automatic paper feeder 1, since the friction plate 4 is in contact with the paper feed roll 5 in an extremely narrow range, sufficient paper feeding force cannot be obtained, and separation between sheets is also not reliable.
そこで、第２図ａに示したような自動給紙装置
１１が提供された。この自動給紙装置１１では、
装置フレーム１２等から延設させた板バネ１３の
自由端に配設する摩擦板１４を彎曲させ、それに
よつて摩擦板１４を給紙ロール１５に面接触させ
ている。しかし、このような自動給紙装置では、
給紙ロール１５の半径ｒと摩擦板１４における給
紙ロール側面の曲率半径８とを一致させることは
困難であり、また第２図ｂに示したように用紙載
置台１７上の多数の用紙１６が同時に給紙ロール
１５と摩擦板１４間に引込まれた際には、摩擦板
１４が給紙ロール１５から完全に離間してしま
い、一度に二枚以上の用紙を排出してしまう、所
謂ダブルフイードを生じる場合があつた。 Therefore, an automatic paper feeder 11 as shown in FIG. 2a was provided. In this automatic paper feeder 11,
A friction plate 14 disposed at the free end of a leaf spring 13 extending from the device frame 12 or the like is curved, thereby bringing the friction plate 14 into surface contact with the paper feed roll 15. However, with this type of automatic paper feeder,
It is difficult to match the radius r of the paper feed roll 15 with the radius of curvature 8 of the side surface of the paper feed roll on the friction plate 14, and as shown in FIG. When the paper is drawn between the paper feed roll 15 and the friction plate 14 at the same time, the friction plate 14 is completely separated from the paper feed roll 15, resulting in a so-called double feed in which two or more sheets of paper are ejected at once. There were cases where this occurred.
本考案の目的は上記問題点に鑑みて、用紙のダ
ブルフイードを完全に防止し、しかも構造の簡単
な自動給紙装置を提供することにある。
SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an automatic paper feeding device that completely prevents double feeding of paper and has a simple structure.
この目的を達成するため本考案では、摩擦板を
その少なくとも給紙ロールにおける用紙挿入側と
用紙排出側とでそれぞれ独立して押圧支持させ、
かつこれら摩擦板と給紙ロールとの圧接力を用紙
挿入側よりも用紙排出側の方が大きくなるように
し、もつて摩擦板が給紙ロールにおける用紙挿入
側で該給紙ロールから離間しても、摩擦板の給紙
ロールにおける用紙排出側で該給紙ロールとの接
触状態を完全に保つようにしている。
In order to achieve this object, the present invention independently presses and supports the friction plate at least on the paper insertion side and the paper ejection side of the paper feed roll,
In addition, the pressure force between these friction plates and the paper feed roll is made larger on the paper ejection side than on the paper insertion side, so that the friction plate is separated from the paper feed roll on the paper insertion side of the paper feed roll. Also, the friction plate is kept in perfect contact with the paper feed roll on the paper discharge side of the paper feed roll.
以下図面に示した実施例を参照しながら本考案
を説明する。第３図ａは本考案に係る自動給紙装
置を概念的に示したものである。この自動給紙装
置２１では、装置フレーム２２等に２枚の板バネ
２３，２３′の一端を固定支持し、それらの他端
２３ａ，２３′ａを給紙ロール２５の下方に延設
するとともに、それぞれの端部２３ａ，２３′ａ
で一枚の摩擦板２４を支持している。この摩擦板
２４は、板バネ２３の端部２３ａによつて摩擦板
２４の用紙挿入側端部２４ａが、給紙ロール２５
との用紙挿入角を確保しつつ、給紙ロール２５に
圧接するように支持され、また板バネ２３′の端
部２３′ａによつて摩擦板２４の用紙排出側端部
２４ｂが給紙ロール２５に圧接するように支持さ
せている。この時、板バネ２３′のバネ力を、板
バネ２３のバネ力よりも大きく設定し、摩擦板２
４の給紙ロール２５への圧接力を用紙挿入側端部
２４ａよりも用紙排出側端部２４ｂの方が大きく
なるようにする。このようにして設置された摩擦
板２４は給紙ロール２５に巻付くような態様で接
触する。
The present invention will be described below with reference to embodiments shown in the drawings. FIG. 3a conceptually shows an automatic paper feeder according to the present invention. In this automatic paper feeder 21, one ends of two leaf springs 23, 23' are fixedly supported on the device frame 22, etc., and the other ends 23a, 23'a are extended below the paper feed roll 25. , respective ends 23a, 23'a
supports one friction plate 24. This friction plate 24 is configured such that an end 24a of the friction plate 24 on the paper insertion side is connected to the paper feed roll 25 by the end 23a of the leaf spring 23.
It is supported so as to be in pressure contact with the paper feed roll 25 while ensuring the paper insertion angle with respect to the paper feed roll. It is supported so as to be in pressure contact with 25. At this time, the spring force of the leaf spring 23' is set larger than the spring force of the leaf spring 23, and the friction plate 23'
The pressing force against the paper feed roll 25 of No. 4 is made larger at the paper ejection side end 24b than at the paper insertion side end 24a. The friction plate 24 installed in this manner comes into contact with the paper feed roll 25 in a manner that it wraps around it.
この実施例の自動給紙装置では、第３図ｂに示
したように、用紙載置台２７上の多数の用紙２６
が同時に給紙ロール２５と摩擦板２４間に引込ま
れた際に、摩擦板２４の用紙挿入側端部２４ａが
給紙ロール２５から離間してしまう。しかしなが
ら、摩擦板２４における用紙排出側端部２４ｂで
は、上記用紙挿入側端部２４ａを押圧支持する板
バネ２３から独立して設置され、かつこの板バネ
２３よりも大きなバネ力をもつ板バネ２３′によ
つて押圧支持されているため給紙ロール２５から
離間することはなく、したがつてこの用紙排出側
端部２４ｂによつて、用紙２６相互間の分離が確
実になされ、給紙ロール２５に接している用紙２
６ａのみを装置本体側（矢印Ｂ方向）に排出させ
る。 In the automatic paper feeder of this embodiment, as shown in FIG.
When the paper insertion side end 24a of the friction plate 24 is drawn between the paper feed roll 25 and the friction plate 24 at the same time, the paper insertion side end 24a of the friction plate 24 separates from the paper feed roll 25. However, at the paper ejection side end 24b of the friction plate 24, a plate spring 23 is installed independently from the plate spring 23 that presses and supports the paper insertion side end 24a, and has a larger spring force than the plate spring 23. ' Since the sheets are supported under pressure by the paper feed roll 25, they do not separate from the paper feed roll 25. Therefore, the paper discharge side end 24b ensures separation of the paper sheets 26 from each other, and the paper feed roll 25 paper 2 that is in contact with
Only 6a is discharged toward the main body of the apparatus (in the direction of arrow B).
なお、上記実施例では、板バネ２３，２３′を
給紙ロール２５の下方まで延設し、その板バネ２
３，２３′の端部２３ａ，２３′ａによつて摩擦板
２４を支持しているが、給紙ロール２５の下方ま
で装置フレーム２２を延設し、該フレームと摩擦
板２４間に弾性体たとえばコイルスプリングを介
在させ、それによつて摩擦板２４を給紙ロール２
５に圧着させるようにしてもよく、要は摩擦板２
４の用紙挿入側端部２４ａが給紙ロール２５から
離間した際にも、用紙排出側端部２４ｂが給紙ロ
ール２５に圧接された状態を維持できればよい。 In the above embodiment, the leaf springs 23, 23' are extended below the paper feed roll 25, and the leaf springs 23, 23' are
The friction plate 24 is supported by the ends 23a and 23'a of the paper feed roll 25, and an elastic body is provided between the frame and the friction plate 24. For example, a coil spring may be interposed between the friction plate 24 and the paper feed roll 2.
The friction plate 2 may be crimped to the friction plate 2.
Even when the paper insertion side end 24a of No. 4 is separated from the paper feed roll 25, it is only necessary that the paper discharge side end 24b can maintain the state in which it is in pressure contact with the paper feed roll 25.
上記したように本考案に係る自動給紙装置は、
給紙ローラと摩擦板との接触面積が広く、したが
つて十分な給紙力および用紙相互間の分離能力が
得られ、多数の用紙が同時に給紙ロールと摩擦板
間に引込まれても、摩擦板全体が給紙ロールから
離間することなく、したがつて一枚の用紙のみを
確実に分離排出することができ、しかも構造が極
めて簡単である。
As mentioned above, the automatic paper feeder according to the present invention is
The contact area between the paper feed roller and the friction plate is wide, and therefore sufficient paper feeding force and ability to separate sheets from each other can be obtained, and even if a large number of papers are drawn between the paper feed roll and the friction plate at the same time, The entire friction plate does not separate from the paper feed roll, so only one sheet of paper can be reliably separated and discharged, and the structure is extremely simple.
第１図は従来の自動給紙装置を示した概念図、
第２図ａは改良された従来の自動給紙装置を示し
た概念図、第２図ｂはその装置の動作を示した概
念図、第３図ａは本考案に係る自動給紙装置を示
した概念図、第３図ｂはその装置の動作を示した
概念図である。
２１……自動給紙装置、２２……装置フレー
ム、２３，２３′……板バネ、２３ａ，２３′ａ…
…端部、２４……摩擦板、２４ａ……用紙挿入側
端部、２４ｂ……用紙排出側端部、２５……給紙
ロール、２６……用紙、２７……用紙載置台。
Figure 1 is a conceptual diagram showing a conventional automatic paper feeder.
Figure 2a is a conceptual diagram showing an improved conventional automatic paper feeder, Figure 2b is a conceptual diagram showing the operation of the device, and Figure 3a is an automatic paper feeder according to the present invention. FIG. 3b is a conceptual diagram showing the operation of the device. 21... Automatic paper feeder, 22... Device frame, 23, 23'... Leaf spring, 23a, 23'a...
... end, 24 ... friction plate, 24a ... paper insertion side end, 24b ... paper discharge side end, 25 ... paper feed roll, 26 ... paper, 27 ... paper mounting table.
Claims (1)
紙ロールと摩擦板との間に臨ませ、上記給紙ロー
ルと用紙間、用紙相互間および用紙と摩擦板間の
摩擦係数の差を利用して上記用紙を一枚ずつ分離
排出する自動給紙装置において、上記摩擦板を、
少なくとも給紙ロールにおける用紙挿入側と用紙
排出側とで、それぞれ独立した弾性体を介して支
持させるとともに、これら弾性体によつて上記摩
擦板を上記給紙ロールに圧接させ、さらに上記摩
擦板と上記給紙ロールとの圧接力を上記用紙挿入
側よりも上記用紙排出側の方が大きくなるように
したことを特徴とする自動給紙装置。 The edge of the paper stacked on the paper loading table is placed between the paper feed roll and the friction plate, and the difference in the coefficient of friction between the paper feed roll and the paper, between each paper, and between the paper and the friction plate is utilized. In an automatic paper feeder that separates and discharges the paper one by one, the friction plate is
At least the paper insertion side and the paper ejection side of the paper feed roll are supported via independent elastic bodies, and these elastic bodies press the friction plate against the paper supply roll, and the friction plate An automatic paper feeder characterized in that the pressure contact force with the paper feed roll is greater on the paper ejection side than on the paper insertion side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12394882U JPS5930037U (en) | 1982-08-16 | 1982-08-16 | automatic paper feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12394882U JPS5930037U (en) | 1982-08-16 | 1982-08-16 | automatic paper feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5930037U JPS5930037U (en) | 1984-02-24 |
| JPH0114589Y2 true JPH0114589Y2 (en) | 1989-04-28 |
Family
ID=30282735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12394882U Granted JPS5930037U (en) | 1982-08-16 | 1982-08-16 | automatic paper feeder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5930037U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725838B2 (en) * | 1978-06-02 | 1982-06-01 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS626039Y2 (en) * | 1980-07-17 | 1987-02-12 |
-
1982
- 1982-08-16 JP JP12394882U patent/JPS5930037U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5725838B2 (en) * | 1978-06-02 | 1982-06-01 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5930037U (en) | 1984-02-24 |
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