JP2007216550A - Shuttle mechanism of dot line printer - Google Patents

Shuttle mechanism of dot line printer Download PDF

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Publication number
JP2007216550A
JP2007216550A JP2006040723A JP2006040723A JP2007216550A JP 2007216550 A JP2007216550 A JP 2007216550A JP 2006040723 A JP2006040723 A JP 2006040723A JP 2006040723 A JP2006040723 A JP 2006040723A JP 2007216550 A JP2007216550 A JP 2007216550A
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shift plate
shuttle mechanism
dot line
line printer
bearing
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JP5055785B2 (en
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Michimasa Watabiki
道誠 綿引
Fukuji Neya
福治 根矢
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Ricoh Printing Systems Ltd
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Ricoh Printing Systems Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To achieve a configuration for facilitating the positional adjustment of a shift plate at low cost by making the fixing position of the shift plate and a bearing perpendicular to each other. <P>SOLUTION: In the shuttle mechanism of a dot line printer where a hammer bank mounting a plurality of print elements is reciprocated in the figure direction while being guided by a shift plate, the shift plate 2 is arranged vertically while being held between a pair of bearings 16 secured non-rotatably to a base plate 19 by means of an auxiliary securing member. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、ドット印字用ハンマによりドットマトリクス形式で印字を行うドットラインプリンタに関するものであり、さらに詳しくはドット印字用ハンマを桁方向に往復移動させるためのシャトル機構に関するものである。   The present invention relates to a dot line printer that performs printing in a dot matrix format using a dot printing hammer, and more particularly to a shuttle mechanism for reciprocating a dot printing hammer in the digit direction.

図5を用いてドットラインプリンタの印字機構の概略を示す。   An outline of the printing mechanism of the dot line printer will be described with reference to FIG.

複数個の印字ハンマ(図示せず)を搭載したハンマバンク11は、ハンマブロック1に連結され、スライド軸受を介してシャフト5で支持されている。また、ハンマバンク11と逆位相で動作するカウンタバランサ3も、リニア軸受を介してシャフト5で支持されている。ハンマバンク11及びカウンタバランサ3を駆動する方式としては様々なものがあるが、ここではクランク6を用いたクランク方式を例にとって説明する。   A hammer bank 11 carrying a plurality of printing hammers (not shown) is connected to the hammer block 1 and supported by a shaft 5 via a slide bearing. A counter balancer 3 that operates in the opposite phase to the hammer bank 11 is also supported by the shaft 5 via a linear bearing. There are various methods for driving the hammer bank 11 and the counter balancer 3. Here, a crank method using the crank 6 will be described as an example.

一対のクランク6は、一端がハンマブロック1と、他端が前記カウンタバランサ3に連結され、各々モータ7の駆動軸と連結されている。2個のクランク6は180°位相をずらして配設されているため、モータ7を駆動するとハンマバンク11とカウンタバランサ3は互いに逆位相で往復運動する。ハンマバンク11にはセンサ(図示せず)が取り付けられており、ハンマバンク11が移動すると、一定の間隔で信号を出力し図示しない印字制御回路を介して前記印字ハンマを駆動させ、インクリボン12を介して用紙13の所定の位置に打点印刷を行う。用紙13はハンマバンク11の反転時に適時、紙送りモータ17にて駆動されるトラクタ18によって搬送される。   The pair of cranks 6 has one end connected to the hammer block 1 and the other end connected to the counter balancer 3, and each connected to the drive shaft of the motor 7. Since the two cranks 6 are arranged with a phase difference of 180 °, when the motor 7 is driven, the hammer bank 11 and the counter balancer 3 reciprocate in opposite phases. A sensor (not shown) is attached to the hammer bank 11, and when the hammer bank 11 moves, a signal is output at regular intervals to drive the print hammer via a print control circuit (not shown), and the ink ribbon 12 The dot printing is performed at a predetermined position on the paper 13 via the. The paper 13 is conveyed by a tractor 18 driven by a paper feed motor 17 at an appropriate time when the hammer bank 11 is reversed.

次に図5を参照しつつ、図6、図7を用いて従来技術における方式について説明する。   Next, with reference to FIG. 5, the method in the prior art will be described using FIG. 6 and FIG.

ハンマバンク11が用紙13への打撃を行う際、打撃力の反力をハンマバンク11全体が受ける。ハンマバンク11は、ハンマブロック1を介してシャフト5に取り付けられており、反力によりシャフト5を回転中心として回転してしまうため、回転止めの機能を設けている。回転止めの機能としては、シャフト5のスライド方向に可動とし、回転方向は固定とする必要がある。そのため、外輪回転可能な軸受16などにより固定するのが一般的である。その機能は、図6に示すようにシャフト5を介して固定されているハンマブロック1にシフトプレート2を固定し、シフトプレート2の上下を軸受16で挟持し、ハンマバンク11の打撃反力に対してシャフト5を中心に回動しない構造としている。ハンマバンク11はシャトルによるハンマ駆動方向に、左右ハンマブロック1の2点でシャフト5に支持され、各々のハンマブロック1にシフトプレート2が取り付けられ、それぞれ一対の軸受16により挟持されてハンマバンク11の回転止めを行う構成としている。   When the hammer bank 11 strikes the paper 13, the entire hammer bank 11 receives the reaction force of the striking force. The hammer bank 11 is attached to the shaft 5 via the hammer block 1 and rotates around the shaft 5 due to the reaction force, and thus has a function of preventing rotation. As a function of the rotation stop, it is necessary to make it movable in the sliding direction of the shaft 5 and to fix the rotation direction. For this reason, it is generally fixed by a bearing 16 that can rotate the outer ring. As shown in FIG. 6, the shift plate 2 is fixed to the hammer block 1 fixed via the shaft 5 as shown in FIG. 6, and the upper and lower sides of the shift plate 2 are held between the bearings 16. On the other hand, the shaft 5 does not rotate. The hammer bank 11 is supported by the shaft 5 at two points of the left and right hammer blocks 1 in the hammer driving direction by the shuttle, and a shift plate 2 is attached to each hammer block 1 and is sandwiched between a pair of bearings 16 and is placed in the hammer bank 11. The rotation is stopped.

しかし、左右ハンマブロック1の2点での回転止めによる支持は、水平に取り付けたシフトプレート2に対し垂直に軸受16を押付ける構成であり、軸受16の保持と位置合せのためのホルダ17が必要となる(例えば、特許文献1、2参照。)。また軸受16の取り付け角度はシフトプレート2に対し高精度な並行度を確保する必要があるため、ホルダ17に高精度の角度度精度を確保する必要がありコスト高となっている。さらに、軸受16の軸部16aをネジ16bにてホルダ17に締め付け固定する際、締結時の締め付けトルクにて軸部16aが回転してしまうため、軸部16aを保持するために図示していないフラット部を形成しスパナ工具を使用してネジ締めを行う必要があり、特にシフトプレート2の下側の軸受16を固定する場合は作業が困難となっており、調整コスト大となっていた(例えば、特許文献3参照。)。   However, the support by the rotation stop at two points of the left and right hammer blocks 1 is a configuration in which the bearing 16 is pressed vertically against the shift plate 2 mounted horizontally, and a holder 17 for holding and aligning the bearing 16 is provided. (For example, refer to Patent Documents 1 and 2.) In addition, since the mounting angle of the bearing 16 needs to ensure a high degree of parallelism with respect to the shift plate 2, it is necessary to ensure a high degree of accuracy of the angular degree in the holder 17, and the cost is high. Further, when the shaft portion 16a of the bearing 16 is fastened and fixed to the holder 17 with the screw 16b, the shaft portion 16a is rotated by the tightening torque at the time of fastening, so that it is not shown in order to hold the shaft portion 16a. It is necessary to form a flat part and tighten a screw using a spanner tool. In particular, when the lower bearing 16 of the shift plate 2 is fixed, the operation is difficult and the adjustment cost is high ( For example, see Patent Document 3.)

特開2002−52746号公報JP 2002-52746 A

特開2005−59288号公報JP 2005-59288 A

特開2003−25673号公報JP 2003-25673 A

上記したように、軸受16の保持と位置合せのためには位置精度が高く専用となるホルダ17を必要としていたこと、さらに、軸受16の軸部16aを締結時、専用工具を使用してネジ締めを行う必要があり、特にシフトプレート2の下側の軸受16を固定する場合は作業が困難のため調整コスト大となっており、低コストでシフトプレート2の位置調整を容易とする構成を実現することが課題となっている。   As described above, the holder 17 having a high positional accuracy is required for holding and aligning the bearing 16, and the screw 16 is screwed using a dedicated tool when the shaft portion 16a of the bearing 16 is fastened. It is necessary to perform tightening, and in particular, when fixing the lower bearing 16 of the shift plate 2, the operation is difficult and the adjustment cost is high, and the configuration that makes it easy to adjust the position of the shift plate 2 at low cost. Realization is a challenge.

上記課題は、複数個の印字素子を搭載したハンマバンクをシフトプレートを案内として桁方向に往復移動させるドットラインプリンタのシャトル機構において、前記シフトプレートを垂直に配置するとともに一対の軸受で挟んで支持し、該軸受を固定補助部材により非回転にベースプレートに固定することによって解決される。   In the dot line printer shuttle mechanism in which a hammer bank carrying a plurality of printing elements is moved back and forth in the direction of a digit using a shift plate as a guide, the shift plate is arranged vertically and supported by a pair of bearings. The bearing is fixed to the base plate in a non-rotating manner by a fixing auxiliary member.

本発明によれば、シフトプレートと軸受の取り付け方向を垂直にすることで、従来必要としていた専用のホルダを削除でき、かつ作業性が悪かった箇所の軸受の移動と回転止めも可能とすることができることから、低コストで信頼性の高いドットラインプリンタを提供することができる。   According to the present invention, by making the mounting direction of the shift plate and the bearing vertical, it is possible to remove a dedicated holder that has been necessary in the past and to move and stop the rotation of the bearing at a place where workability is poor. Therefore, it is possible to provide a low-cost and highly reliable dot line printer.

以下に、本発明の一例を図1、図2、図3を参照して説明する。   Hereinafter, an example of the present invention will be described with reference to FIGS. 1, 2, and 3.

図1、図2は本発明のシャトル機構の全体構成を示している。   1 and 2 show the overall configuration of the shuttle mechanism of the present invention.

ハンマバンク11は両端をシャフト5に固定され、シャフト5を連結したシフトホルダ20にシフトプレート2を桁方向2ヶ所に垂直に固定している。それぞれのシフトプレート2を対向した一対の軸受16で挟持することで、ハンマバンク11の印字反力による回転を防止する。軸受16はモータ7を固定するベースプレート19に直接固定され、軸受16を固定するネジのアクセスはベースプレート19を固定するメカフレーム30の開口部下側から行っている。モータ7に連結したクランク6の一方はシフトホルダ20に連結し、他方はカウンタバランサ3に連結する。   Both ends of the hammer bank 11 are fixed to the shaft 5, and the shift plate 2 is fixed to the shift holder 20 connected to the shaft 5 vertically at two places in the digit direction. By holding each shift plate 2 between a pair of bearings 16 facing each other, rotation of the hammer bank 11 due to a printing reaction force is prevented. The bearing 16 is directly fixed to the base plate 19 that fixes the motor 7, and the screw that fixes the bearing 16 is accessed from below the opening of the mechanical frame 30 that fixes the base plate 19. One of the cranks 6 connected to the motor 7 is connected to the shift holder 20 and the other is connected to the counter balancer 3.

図3は、本発明のシャトル機構を構成するベースプレートの上面図、図4は図3のA−B断面図である。両端2ヶ所のシフトプレート2は対向する一対の軸受16に挟持された状態であり、軸受16の軸部16aは板金等で構成した固定補助部材21の長穴21aに嵌合するように軸の両端をフラットに形成してある。固定補助部材21を前後方向(図3の矢印方向)に動かすことにより固定補助部材21の長穴端面が軸部16aを押すため、軸受16を移動できるようにしている。例えば軸受16がシフトプレート2の裏側になってしまう場合には、固定補助部材21を手前に引きこむことで軸受16をシフトプレート2に突き当たる状態に移動でき、適切な荷重にて軸受16を押付け容易にネジにて固定できる。軸受16を一般的なボールベアリングを使用する場合、押付け荷重は約19.6N程度が適切である。   FIG. 3 is a top view of the base plate constituting the shuttle mechanism of the present invention, and FIG. 4 is a cross-sectional view taken along the line AB of FIG. The shift plates 2 at the two ends are sandwiched between a pair of bearings 16 facing each other, and the shaft portion 16a of the bearing 16 is connected to the elongated hole 21a of the fixing auxiliary member 21 made of sheet metal or the like. Both ends are formed flat. By moving the fixing auxiliary member 21 in the front-rear direction (the arrow direction in FIG. 3), the end face of the elongated hole of the fixing auxiliary member 21 pushes the shaft portion 16a, so that the bearing 16 can be moved. For example, when the bearing 16 is behind the shift plate 2, the bearing 16 can be moved to abut against the shift plate 2 by pulling the fixing auxiliary member 21 forward, and the bearing 16 is pressed with an appropriate load. Can be easily fixed with screws. When a general ball bearing is used as the bearing 16, a pressing load of about 19.6 N is appropriate.

さらに、固定補助部材21の長穴に軸部16aが嵌合し回転できない状態とすることにより、軸部16aをネジ16bにて固定するときの締め付けによる回転止めの機能も得られる。   Furthermore, by making the shaft portion 16a fit into the elongated hole of the auxiliary fixing member 21 so that the shaft portion 16a cannot rotate, a function of stopping rotation by tightening when the shaft portion 16a is fixed with the screw 16b can be obtained.

また、固定補助部材21にて軸受16の固定が完了した後には、固定補助部材21がシャトル動作時の振動などで動かないようにするため、固定ネジ22にて固定できるようにするとよい。   Further, after the fixing of the bearing 16 is completed by the fixing auxiliary member 21, the fixing auxiliary member 21 may be fixed by the fixing screw 22 so that the fixing auxiliary member 21 does not move due to vibration or the like during the shuttle operation.

本発明の一例を示したシャトル機構の全体斜視図である。It is the whole shuttle mechanism perspective view which showed an example of the present invention. 本発明の一例を示したシャトル機構の展開図である。It is the expanded view of the shuttle mechanism which showed an example of this invention. 本発明の一例を示したシャトル機構の一部を省略した上面図である。It is the top view which omitted a part of shuttle mechanism which showed an example of the present invention. 図3のA−B断面拡大図である。FIG. 4 is an enlarged cross-sectional view taken along the line AB in FIG. 3. 従来のドットラインプリンタの全体構成を示した斜視図である。It is the perspective view which showed the whole structure of the conventional dot line printer. 従来のシャトル機構の全体構成を示した斜視図である。It is the perspective view which showed the whole structure of the conventional shuttle mechanism. 従来のシャトル機構のスライド案内部を示した側面図である。It is the side view which showed the slide guide part of the conventional shuttle mechanism.

符号の説明Explanation of symbols

1はハンマブロック、2はシフトプレート、3はカウンタバランサ、5はシャフト、6はクランク、7はモータ、11はハンマバンク、12はリボン、13は用紙、16は軸受、16aは軸部、16bはネジ、17はホルダ、18はトラクタ、19はベースプレート、20はシフトホルダ、21は固定補助部材、21aは長穴、22は固定ネジ、30はメカフレームである。
1 is a hammer block, 2 is a shift plate, 3 is a counter balancer, 5 is a shaft, 6 is a crank, 7 is a motor, 11 is a hammer bank, 12 is a ribbon, 13 is paper, 16 is a bearing, 16a is a shaft, 16b Is a screw, 17 is a holder, 18 is a tractor, 19 is a base plate, 20 is a shift holder, 21 is a fixing auxiliary member, 21a is a long hole, 22 is a fixing screw, and 30 is a mechanical frame.

Claims (4)

複数個の印字素子を搭載したハンマバンクを、シフトプレートを案内として桁方向に往復移動させるドットラインプリンタのシャトル機構において、前記シフトプレートを一対の軸受で挟んで支持し、該軸受を固定補助部材により非回転にベースプレートに固定したことを特徴とするドットラインプリンタのシャトル機構。   In a shuttle mechanism of a dot line printer that reciprocates a hammer bank mounted with a plurality of printing elements in a digit direction with a shift plate as a guide, the shift plate is supported by being sandwiched by a pair of bearings, and the bearings are fixed auxiliary members The shuttle mechanism of the dot line printer is characterized in that it is fixed to the base plate in a non-rotating manner. 前記シフトプレート、前記軸受、及び前記固定補助部材は、前記ハンマバンクの往復移動方向2箇所設けられていることを特徴とする請求項1記載のドットラインプリンタのシャトル機構。   2. The dot line printer shuttle mechanism according to claim 1, wherein the shift plate, the bearing, and the fixing auxiliary member are provided at two locations in a reciprocating direction of the hammer bank. 前記シフトプレートは垂直に配置されていることを特徴とする請求項1または2記載のドットラインプリンタのシャトル機構。   The dot line printer shuttle mechanism according to claim 1, wherein the shift plate is arranged vertically. 前記固定補助部材は水平方向に移動調節可能であることを特徴とする請求項1または2記載のドットラインプリンタのシャトル機構。
3. The shuttle mechanism for a dot line printer according to claim 1, wherein the fixing auxiliary member is movable and adjustable in the horizontal direction.
JP2006040723A 2006-02-17 2006-02-17 Dot line printer shuttle mechanism Expired - Fee Related JP5055785B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110978801A (en) * 2019-12-31 2020-04-10 广州市贺氏办公设备有限公司 Stylus printer

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6353804U (en) * 1986-09-27 1988-04-11
JPS6395711U (en) * 1986-12-08 1988-06-21
JP2002052746A (en) * 2000-08-11 2002-02-19 Hitachi Koki Co Ltd Shuttle structure of dot line printer
JP2003305911A (en) * 2002-04-12 2003-10-28 Seiko Epson Corp Carriage guide structure and recorder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6353804U (en) * 1986-09-27 1988-04-11
JPS6395711U (en) * 1986-12-08 1988-06-21
JP2002052746A (en) * 2000-08-11 2002-02-19 Hitachi Koki Co Ltd Shuttle structure of dot line printer
JP2003305911A (en) * 2002-04-12 2003-10-28 Seiko Epson Corp Carriage guide structure and recorder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110978801A (en) * 2019-12-31 2020-04-10 广州市贺氏办公设备有限公司 Stylus printer

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