JPH0314316Y2 - - Google Patents
Info
- Publication number
- JPH0314316Y2 JPH0314316Y2 JP3474586U JP3474586U JPH0314316Y2 JP H0314316 Y2 JPH0314316 Y2 JP H0314316Y2 JP 3474586 U JP3474586 U JP 3474586U JP 3474586 U JP3474586 U JP 3474586U JP H0314316 Y2 JPH0314316 Y2 JP H0314316Y2
- Authority
- JP
- Japan
- Prior art keywords
- tooth
- rotating
- cam
- drive pin
- paper
- 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
- 238000005520 cutting process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Handling Of Sheets (AREA)
- Details Of Cutting Devices (AREA)
- Control Of Cutting Processes (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案はロール紙に印字するプリンター等に使
用されるカツター機構に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a cutter mechanism used in printers and the like that print on roll paper.
従来の一般的なカツター機構について第５図を
用いて説明する。
A conventional general cutter mechanism will be explained using FIG. 5.
図において１は回転軸２の中心に回転するカム
であり側面には連動ピン３が形成されている。４
は前記連動ピンに一端を回動自在に支持された支
持レバーであり他端で後述する駆動ピン８を回動
自在に支持するようになつている。５は用紙の幅
方向に渡設された固定歯であり６は回動軸７を中
心に回動する回動歯である。該回動歯６の長手方
向の側部には駆動ピン８が設けられ、前記保持レ
バー４の動作を回動歯６に伝達するようになつて
いる。用紙Ｓは固定歯５と回動歯６の間を移送さ
れており、用紙Ｓの切断したい場所が固定歯５の
歯部５ａまで来ると移送が停止されカム１が矢印
Ａ方向に回転を始める。それに連動して支持レバ
ー４が駆動ピン８を下方に引き下げ、回動歯６は
矢印Ｂ方向に回動し用紙Ｓの切断を開始する。そ
してカム１が回転を続けると用紙Ｓは完全に切断
される。さらにカム１が回転を続けると今度は支
持レバー４が駆動ピン８を上方に押し上げ始め回
動歯６は矢印Ｃ方向に回動する。やがて用紙切断
動作開始前の位置まで戻るとカム１の回転が停止
する。 In the figure, reference numeral 1 denotes a cam that rotates about the center of a rotating shaft 2, and an interlocking pin 3 is formed on the side surface. 4
is a support lever whose one end is rotatably supported by the interlocking pin, and whose other end rotatably supports a drive pin 8, which will be described later. Reference numeral 5 indicates a fixed tooth extending in the width direction of the paper, and reference numeral 6 indicates a rotating tooth that rotates around a rotation shaft 7. A drive pin 8 is provided on the longitudinal side of the rotary tooth 6 to transmit the movement of the holding lever 4 to the rotary tooth 6. The paper S is transported between the fixed teeth 5 and the rotating teeth 6, and when the desired cutting position of the paper S reaches the tooth portion 5a of the fixed teeth 5, the transport is stopped and the cam 1 starts rotating in the direction of arrow A. . In conjunction with this, the support lever 4 pulls down the drive pin 8, and the rotating teeth 6 rotate in the direction of arrow B to begin cutting the paper S. Then, as the cam 1 continues to rotate, the paper S is completely cut. As the cam 1 continues to rotate further, the support lever 4 begins to push the drive pin 8 upward, and the rotation tooth 6 rotates in the direction of arrow C. When the cam 1 eventually returns to the position before starting the paper cutting operation, the rotation of the cam 1 stops.
しかしながら、前述した従来のカツター機構に
おいては、用紙Ｓの材質が堅いものであつたり用
紙Ｓが複数枚重なつている場合には、用紙Ｓの切
断途中で回動歯６がロツクしてしまいカム１が回
転しなくなるので、回動歯６を、戻すことができ
なくなる。
However, in the above-mentioned conventional cutter mechanism, if the material of the paper S is hard or if multiple sheets of paper S overlap, the rotating teeth 6 may lock during cutting of the paper S and the cam may lock. 1 stops rotating, the rotating tooth 6 cannot be returned to its original position.
回動歯６のロツク防止には、カム１を強力にＡ
方向に回転させる、又は、ロツクを検知して、カ
ム１を逆回転する方法がある。しかしながら、前
者の方法では、カム１を回転させるための駆動手
段（図示せず）に過大な負荷がかかり、後者の方
法では、検知、カム１の逆転回路が必要となると
いう問題点があつた。 To prevent the rotating teeth 6 from locking, press the cam 1 strongly
There is a method of rotating the cam 1 in the opposite direction, or detecting the lock and rotating the cam 1 in the opposite direction. However, the former method places an excessive load on the drive means (not shown) for rotating the cam 1, and the latter method requires a detection and cam 1 reversal circuit. .
本考案の目的は上記問題点を解決し、回動歯６
ロツク時にもカム１回転用モーターに過大な負荷
がかかることなくロツクが解除されるカツター起
構の提供にある。 The purpose of this invention is to solve the above problems and
To provide a cutter structure in which the lock is released without applying an excessive load to a motor for one rotation of a cam even when the cutter is locked.
本考案においては、用紙の幅方向に渡設された
固定歯と、回動軸を中心に回動し前記固定歯と歯
先が係合する回動歯と、該回動歯の長手方向の側
部に設けられた駆動ピンと、該駆動ピンを支持す
るスリツトを有しカムと連動する支持レバーと、
前記駆動ピンを前記スリツト基部に圧接する弾性
部材とから成ることを特徴とする。
In the present invention, there are fixed teeth extending in the width direction of the paper, rotating teeth that rotate around a rotating shaft and whose tooth tips engage with the fixed teeth, and a rotating tooth extending in the longitudinal direction of the rotating teeth. a drive pin provided on the side; a support lever having a slit for supporting the drive pin and interlocking with the cam;
and an elastic member that presses the drive pin against the slit base.
上記技術的手段は以下のように作用する。 The above technical means works as follows.
用紙切断中に回動歯がロツクしない場合は、カ
ムと連動する支持レバーと駆動ピンが弾性部材の
圧接力により一体となつて動作しカムの回転に伴
つて紙を切断する。回動歯がロツクする場合は、
カムと連動する支持レバーが弾性部材の圧接力に
逆らつて一時的に駆動ピンと別動作することによ
りカムは回転を続け、やがて支持レバーと駆動ピ
ンが一体に戻り回動歯はロツクを解除される。 If the rotary teeth do not lock while cutting the paper, the support lever and drive pin that are interlocked with the cam operate together due to the pressing force of the elastic member, cutting the paper as the cam rotates. If the rotating teeth lock,
The support lever that interlocks with the cam temporarily operates separately from the drive pin against the pressure contact force of the elastic member, so that the cam continues to rotate, and eventually the support lever and drive pin return to one body and the rotation teeth are unlocked. Ru.
本考案の一実施例を第１図〜第４図に示す。 An embodiment of the present invention is shown in FIGS. 1 to 4.
まず構成を説明すると２１は回転軸２２を中心
に回転する円形のカムでありカム２１の軸方向の
側面には連動ピン２３が設けてある。２４は前記
連動ピン２３に一端を回動自在に支持された支持
レバーであり支持レバー２４の他端にはスリツト
２５が設けてある。２６は用紙の幅方向に渡設し
た固定歯であり、歯部２７を有する。２８は回動
軸３０を中心に回動し歯部２９が前記固定歯２６
の歯部２７と係合する回動歯であり、回動歯２８
の長手方向の側部には駆動ピン３１が設けてあ
る。該駆動ピン３１は前記スリツト２５内に支持
されており一端が駆動ピン３１に係合し他端が連
動ピン２３に係合したばね３２によつてスリツト
２５の基部２５ａに圧接されている。 First, the structure will be explained. Reference numeral 21 is a circular cam that rotates around a rotating shaft 22. An interlocking pin 23 is provided on the side surface of the cam 21 in the axial direction. Reference numeral 24 denotes a support lever whose one end is rotatably supported by the interlocking pin 23, and a slit 25 is provided at the other end of the support lever 24. Reference numeral 26 denotes a fixed tooth extending in the width direction of the paper, and has a tooth portion 27. 28 rotates around a rotation shaft 30, and a tooth portion 29 is connected to the fixed tooth 26.
It is a rotating tooth that engages with the tooth portion 27 of the rotating tooth 28.
A drive pin 31 is provided on the longitudinal side. The drive pin 31 is supported within the slit 25 and is pressed against the base 25a of the slit 25 by a spring 32, which has one end engaged with the drive pin 31 and the other end engaged with the interlocking pin 23.
次に作用について説明する。 Next, the effect will be explained.
用紙Ｓの切断したい場所が固定歯２６の歯部２
７と重なる位置まで紙送り機構（図示せず）で送
られると紙送りが停止しカム２１が矢印Ａ方向に
回転を始める。それに連動して支持レバー２４
が、ばね３２によつて該支持レバー２４のスリツ
ト２５基部２５ａに圧接された駆動ピン３１を下
方に引き下げ、回動歯２８は矢印Ｂ方向に回動
し、歯部２９が固定歯２６の歯部２７と係合して
用紙Ｓの切断を行なう。回動歯２８は下死点まで
回動すると（第２図参照）矢印Ｃ方向に回動を始
め、やがて上死点まで戻り停止して切断動作を完
了する。 The place where you want to cut the paper S is the tooth part 2 of the fixed tooth 26
When the paper is fed by a paper feeding mechanism (not shown) to a position overlapping with 7, feeding of the paper stops and the cam 21 starts rotating in the direction of arrow A. In conjunction with this, the support lever 24
However, the driving pin 31 pressed against the base 25a of the slit 25 of the support lever 24 is pulled down by the spring 32, the rotating tooth 28 rotates in the direction of arrow B, and the tooth portion 29 engages the tooth of the fixed tooth 26. It engages with section 27 to cut the paper S. When the rotating tooth 28 rotates to the bottom dead center (see FIG. 2), it begins to rotate in the direction of arrow C, and eventually returns to the top dead center and stops, completing the cutting operation.
ところが用紙Ｓが複数枚重なつていたりすると
上記回動歯２８は矢印Ｂ方向への回動途中でロツ
クして停止する。したがつて駆動ピン３１も停止
するのでカム２１と連動する支持レバー２４が下
方に移動すると駆動ピン３１はスリツト２５基部
２５ａから離れる（第４図参照）。そして支持レ
バー２４が下死点を過ぎ上方に移動すると駆動ピ
ン３１とスリツト２５基部２５ａが再び圧接し、
支持レバー２４は駆動ピン３１を押し上げ回動歯
２８のロツクを解除し上死点まで戻す。 However, if a plurality of sheets of paper S are stacked on top of each other, the rotating teeth 28 lock and stop mid-rotation in the direction of arrow B. Accordingly, the drive pin 31 also stops, and when the support lever 24 interlocked with the cam 21 moves downward, the drive pin 31 separates from the base 25a of the slit 25 (see FIG. 4). Then, when the support lever 24 passes the bottom dead center and moves upward, the drive pin 31 and the base 25a of the slit 25 come into pressure contact again.
The support lever 24 pushes up the drive pin 31, unlocks the rotating tooth 28, and returns it to the top dead center.
以上説明してきたように本考案においては駆動
ピンを支持レバーのスリツト基部に弾性部材によ
つて圧接した構成にしたので、回動歯がロツクし
ても弾性部材が延びることによつて支持レバーが
移動しカムが回転を続けられるのでカム駆動手段
に過大な負荷がかからないという効果を奏する。
また、支持レバーが回動歯を押し戻すのでロツク
検知、モーター運転のための回路を用いることな
くロツクが解除されるという効果を奏する。
As explained above, in the present invention, the drive pin is pressed against the slit base of the support lever by an elastic member, so even if the rotation teeth are locked, the support lever is extended by the elastic member. Since the cam can continue to rotate while moving, there is an effect that no excessive load is applied to the cam driving means.
Furthermore, since the support lever pushes back the rotary tooth, the lock can be released without using a circuit for lock detection or motor operation.
第１図〜第４図は何れも本考案の一実施例を示
し、第１図は回動歯が上死点にある時の正面図、
第２図は回動歯が下死点にある時の正面図、第３
図は側面図、第４図はロツク時の動作説明図であ
り、第５図は従来例の正面図である。
２１……カム、２４……支持レバー、２５……
スリツト、２５ａ……スリツト基部、２６……固
定歯、２７……歯部、２８……回動歯、２９……
歯部、３０……回動軸、３１……駆動ピン、３２
……ばね。
Figures 1 to 4 all show an embodiment of the present invention, and Figure 1 is a front view when the rotating tooth is at the top dead center;
Figure 2 is a front view when the rotating tooth is at the bottom dead center, Figure 3
The figure is a side view, FIG. 4 is an explanatory diagram of the operation at the time of locking, and FIG. 5 is a front view of the conventional example. 21...Cam, 24...Support lever, 25...
Slit, 25a... Slit base, 26... Fixed tooth, 27... Teeth, 28... Rotating tooth, 29...
Tooth portion, 30...Rotation axis, 31...Drive pin, 32
...Spring.
Claims (1)
中心に回動し前記固定歯と歯先が係合する回動歯
と、該回動歯の長手方向の側部に設けられた駆動
ピンと、該駆動ピンを支持するスリツトを有しカ
ムと連動する支持レバーと、前記駆動ピンを前記
スリツト基部に圧接する弾性部材とから成ること
を特徴とするカツター機構。 A fixed tooth provided across the width of the paper, a rotating tooth that rotates about a rotating shaft and whose tip engages with the fixed tooth, and a rotating tooth provided on a longitudinal side of the rotating tooth. 1. A cutter mechanism comprising: a drive pin, a support lever having a slit that supports the drive pin and interlocks with a cam, and an elastic member that presses the drive pin against the base of the slit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3474586U JPH0314316Y2 (en) | 1986-03-10 | 1986-03-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3474586U JPH0314316Y2 (en) | 1986-03-10 | 1986-03-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62147491U JPS62147491U (en) | 1987-09-17 |
| JPH0314316Y2 true JPH0314316Y2 (en) | 1991-03-29 |
Family
ID=30843586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3474586U Expired JPH0314316Y2 (en) | 1986-03-10 | 1986-03-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0314316Y2 (en) |
-
1986
- 1986-03-10 JP JP3474586U patent/JPH0314316Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62147491U (en) | 1987-09-17 |
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