JPS62148271A - Wire dot printer head and manufacture thereof - Google Patents

Wire dot printer head and manufacture thereof

Info

Publication number
JPS62148271A
JPS62148271A JP60289194A JP28919485A JPS62148271A JP S62148271 A JPS62148271 A JP S62148271A JP 60289194 A JP60289194 A JP 60289194A JP 28919485 A JP28919485 A JP 28919485A JP S62148271 A JPS62148271 A JP S62148271A
Authority
JP
Japan
Prior art keywords
coil bobbin
circuit board
resin
printer head
spacer
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.)
Granted
Application number
JP60289194A
Other languages
Japanese (ja)
Other versions
JPH058108B2 (en
Inventor
Masaki Adachi
正樹 安達
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP60289194A priority Critical patent/JPS62148271A/en
Publication of JPS62148271A publication Critical patent/JPS62148271A/en
Publication of JPH058108B2 publication Critical patent/JPH058108B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/22—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material
    • B41J2/23—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of impact or pressure on a printing material or impression-transfer material using print wires
    • B41J2/235—Print head assemblies

Abstract

PURPOSE:To enable a printer head free of failures in operation to be easily manufactured, by a method wherein a thermoplastic resin is injection molded to integrally mold component parts so that a tip part of a core pin for a coil bobbin at which an armature pin is to be arranged is projected, and a spacer is disposed on the back side of the coil bobbin to prevent a circuit substrate from being deformed under an injection pressure. CONSTITUTION:A spacer 11, a circuit substrate 3, a coil bobbin 2 and a heat- releasing body 1 are positioned in a predetermined relationship in a recessed part 16 constituting a cavity provided in a fixed-side mold plate 15. A movable- side mold plate 20 provided with a mold piece 23 is combined with the fixed-side mold plate 16, and mold clamping is carried out. A tip part of a core pin 4 for the coil bobbin 2 is shielded by the core piece 23 which protrudes to the side of the fixed-side mold plate 15 beyond the parting line of metallic molds, and the tip part of the core pin 4 is projected over a resin injected into the cavity. To smoothen the supply of the resin to spaces between component parts, the resin is injected into the cavity through a plurality of runners 21 and gates 22 provided at regular intervals along the outer periphery of the coil bobbin 2.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明は、ワイヤドツトプリンタヘットおよびその製
作方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a wire dot printer head and a manufacturing method thereof.

〔発明の技術的背景とその問題点〕[Technical background of the invention and its problems]

第７図に従来のワイヤドツトプリンタヘットの一例を示
す。このワイヤドットプリンタヘソ１〜は、アルミニウ
ムからなる環状の放熱体（１）と、その内側に配設され
たコイルボビン（２）と、このコイルボビン（２）の背
面側に配設され、一部か放熱体（１）の外側に延出した
回路ＪＩ！ｉ板（３）とを有する。コイルボヒン（２）
は、環状に配列された複数のコアピン（４）登有する環
状のコア（５）と、このコア（５）の各コアピン（４）
のまわりに装着された複数のコイル（６）とからなり、
各コイル（６）は、回路基板（３）に形成された回路に
接続され、各別に通電できるようになっている。FIG. 7 shows an example of a conventional wire dot printer head. This wire dot printer belly button 1~ is composed of an annular heat sink (1) made of aluminum, a coil bobbin (2) disposed inside the heat dissipation body, and a coil bobbin (2) disposed on the back side of the coil bobbin (2). Circuit JI extending to the outside of the heat sink (1)! It has an i-board (3). Coil Bohin (2)
is an annular core (5) having a plurality of core pins (4) arranged in an annular manner, and each core pin (4) of this core (5).
It consists of a plurality of coils (6) attached around the
Each coil (6) is connected to a circuit formed on the circuit board (3), and can be individually energized.

この従来のワイヤドツトプリンタヘットは、放熱体（１
）、コイルボビン（２）および回路基板（３）を所定の
関係に組立てたのち、注型により各部品間に熱硬化型の
エポキシ樹脂（７）を充填して一体化することにより製
作されている。This conventional wire dot printer head has a heat sink (1
), the coil bobbin (2) and the circuit board (3) are assembled in a predetermined relationship, and then a thermosetting epoxy resin (7) is filled between the parts by casting to integrate them. .

ところで上記したワイヤドツトプリンタヘッドは、第８
図にその要部を拡大して示すように、エポキシ樹脂（７
）がコアピン（４）の先端面と同一平面になるまで充填
されているため、アマチュアピン（８）が動作不良をお
こすことがある。すなわち、ワイヤドツトプリンタヘッ
ドは、連続動作時には。By the way, the above-mentioned wire dot printer head is
As shown in the figure, the main part is enlarged, epoxy resin (7
) is filled until it is flush with the tip end surface of the core pin (4), which may cause the armature pin (8) to malfunction. That is, when the wire dot printer head is in continuous operation.

コア（５）が１００°Ｃ近くまで上昇するので、コアピ
ン（４）とそのまわりのエポキシ樹脂の熱膨張の相違に
より、各コアピン（４）上に配設されたアマチュアピン
（８）のｊカイ１をｙ４状にすることがある。As the core (5) rises to nearly 100°C, the difference in thermal expansion between the core pin (4) and the epoxy resin around it causes the temperature of the armature pin (8) arranged on each core pin (4) to increase. 1 may be made into a y4 shape.

また、注型で然硬化性のエポキシ樹脂（７）を充ワ′（
するので、樹脂が固化するまでに約：３０分近い放置時
間が必要であり、この間の保管装置、保管スペースなど
大きな周辺設儲を必要とする。また注型によるエポキシ
樹脂の充填は、低粘度でおこなオ〕れるため、樹脂がわ
ずかな隙間にも入り込み、樹脂ハリを生ずる。そのため
そのパリ取りに大きな」−数がかかるなどの問題がある
。In addition, it is filled with naturally hardening epoxy resin (7) by casting.
Therefore, it takes about 30 minutes for the resin to solidify, and during this time a large amount of peripheral equipment such as storage equipment and storage space is required. Furthermore, since filling with epoxy resin by casting is done at a low viscosity, the resin gets into even the slightest gaps, causing resin firmness. Therefore, there are problems such as it takes a large amount of time to remove the gaps.

〔発明の目的〕[Purpose of the invention]

この発明は、温度が上昇しても動作不良をおこさないよ
うにワイヤドツトプリンタヘッドを構成し、かつかかる
ワイヤドツトプリンタヘッドを容易に製作できるように
することにある。SUMMARY OF THE INVENTION The object of the present invention is to configure a wire dot printer head so that it will not malfunction even when the temperature rises, and to make such a wire dot printer head easy to manufacture.

〔発明の概要〕[Summary of the invention]

この発明は、環状の放熱体、その内側に配設されるコイ
ルボビンおよびこのコイルボビンの背面に配設される回
路基板を有するワイヤドツトプリンタヘッドにおいて、
アマチュアピンの配設されるコイルボビンのコアピン先
端部を突出する如く射出成形により熱可塑性樹脂を充填
して各部品を一体化するとともに、コイルボビンの背面
にスペーサを配設して、射出圧による回路基板の変形を
防止することにより、動作不良を発生しないワイヤドツ
トプリンタヘットを容易に製作できるようにしたもので
ある。The present invention provides a wire dot printer head having an annular heat radiating body, a coil bobbin disposed inside the heat dissipating body, and a circuit board disposed on the back surface of the coil bobbin.
The core pin tip of the coil bobbin, where the armature pin is arranged, is filled with thermoplastic resin by injection molding so as to protrude, and each part is integrated. At the same time, a spacer is arranged on the back of the coil bobbin, and a circuit board is formed by injection pressure. By preventing deformation of the wire dot printer head, it is possible to easily manufacture a wire dot printer head that does not cause malfunctions.

〔発明の実施例〕[Embodiments of the invention]

以下、図面を参照してこの発明を実施例に基づいて説明
する。Hereinafter, the present invention will be described based on embodiments with reference to the drawings.

第１図にこの発明の一実施例であるワイヤトノＩ〜プリ
ンタパノ１−の構造を、また第２図にその要部を拡大し
て示す。このワイヤトノ１−プリンタヘン１〜は、内周
面が円形をなし外周面が四角形状のアルミニウムからな
る環状の放熱体（１）を有し。FIG. 1 shows the structure of a wire tonneau I to printer pane 1 which is an embodiment of the present invention, and FIG. 2 shows an enlarged view of the main parts thereof. This wire tonnage 1-printer head 1 has an annular heat sink (1) made of aluminum and having a circular inner circumferential surface and a square outer circumferential surface.

その内側に、環状に配列された複数のコアピン（４）を
もつ環状のコア（５）と絶縁ボビン（１０）を介して上
記各コアピン（４）のまオ）りに装着された複数のコイ
ル（６）とからなるコイルボビンか配設されている。こ
のコイルボビン（２）の背面側には、上記各コイル（６
）を各別に通電するための回路が形成された回路基板（
３）が配設され、その一部は、上記放熱板（１）の切欠
き部を通ってその外方に延出している。またこの回路基
板（３）の背面に密着して放熱体（１）の内側には、絶
縁性のスペーサ（１１）が配設されている。しかしてこ
れらの各部品は、各部品間に充填されたポリプロピレン
などの比較的耐熱性の高い熱可塑性樹脂（１２）により
一体的に固定されている。特にこのワイヤドットプリン
タヘソ１〜においては、上記樹脂は、各コアピン（４）
の先端部を突出露出させるように充填されている。Inside thereof, a ring-shaped core (5) has a plurality of core pins (4) arranged in a ring, and a plurality of coils are attached to each of the core pins (4) via an insulating bobbin (10). A coil bobbin consisting of (6) is provided. On the back side of this coil bobbin (2), each of the above-mentioned coils (6
) A circuit board (
3), a part of which extends outward through the notch of the heat sink (1). Further, an insulating spacer (11) is provided inside the heat sink (1) in close contact with the back surface of the circuit board (3). These parts are integrally fixed by a relatively heat-resistant thermoplastic resin (12) such as polypropylene filled between the parts. In particular, in this wire dot printer belly button 1~, the above resin is applied to each core pin (4).
It is filled so that the tip of the tube protrudes and is exposed.

なお５図面中（８）は、各コアピン（４）の先端面上に
配設されるアマチュアピンの−っを代表的に示したもの
である。Note that (8) in Figure 5 typically shows the armature pins disposed on the tip end surface of each core pin (4).

つぎに、このワイヤ１−ノ１−プリンタヘッドの製作方
法について述べる。Next, a method of manufacturing this wire 1-no-1 printer head will be described.

このワイヤドラ１−プリンタ八ッ１−は、固定側型板に
対して、可動側型板が上下方向に移動する金型を用い、
上記固定側型板上で各部品を所定の関係に組立てたのち
、縦型射出成形機から各部品間に熱可塑性を射出充填す
ることにより製作される。This wire driver 1-printer 8-1 uses a mold in which a movable template moves vertically with respect to a fixed template,
After assembling each part in a predetermined relationship on the stationary template, the part is manufactured by injecting thermoplastic between each part using a vertical injection molding machine.

まず第３図に示すように、固定側型板（１５）のキャビ
ティを構成する凹部（１６）の中央部に立設された一対
のガイドピン（１７）にスペーサ（１１）の位置決め孔
を挿通して、上記凹部（１６）内にスペーサ（１１）を
位置決めする。First, as shown in Fig. 3, the positioning holes of the spacer (11) are inserted through a pair of guide pins (17) set upright in the center of the recess (16) that constitutes the cavity of the stationary template (15). Then, the spacer (11) is positioned within the recess (16).

つぎに第４図に示すように、上記一対のガイドピン（１
７）に回路基板（３）の位置決め孔を挿通して、上記ス
ペーサ（１１）上に、あらかじめ組立てられた回路基板
（３）とコイルボビン（２）の組立体（１８）を位置決
めする。Next, as shown in Fig. 4, the pair of guide pins (1
7) is inserted through the positioning hole of the circuit board (3) to position the pre-assembled assembly (18) of the circuit board (3) and coil bobbin (2) on the spacer (11).

つぎに第５図に示すように、上記凹部（１６）の両側辺
部上に立設された一対のガイドピン（１９）に放熱体（
１）の両側面に形成された溝を嵌合させて、上記凹部（
１６）内に放熱体（１）を位置決めする。Next, as shown in FIG. 5, a heat sink (
1) by fitting the grooves formed on both sides of the recess (
16) positioning the heat sink (1) within;

しかるのち第６図に示すように、この固定側型板（１５
）に可動側型板（２０）を組合せて射出成形機のダイセ
ットに取り付けて型締めしたのち、上記可動側型板（２
０）に設けられたランナー（２１）、ゲート（２２）　
’）介して、キャビティすなわち上記位置決めされた各
部品間に熱可塑性樹脂（１２）を射出充填する。この樹
脂（１２）の射出充填に際し、コイルボビン（２）のコ
アピン（４）の先端部は、金型のパーティングラインよ
り固定側型板（１５）方向に突出した可動側型板（２０
）の入れ子（２３）により遮蔽され、コアピン（４）の
先端部を充填樹脂上に突出させる。またキャビティへの
樹脂の射出は、各部品間への樹脂のまわりを円滑にする
ため、コイルボビン（２）の外周に沿って等間隔に設け
られた複数のランナー（２１）、ゲート（２２）を介し
ておこなわれる。After that, as shown in Fig. 6, this fixed side template (15
) and the movable side template (20), and then attach it to the die set of the injection molding machine and clamp the mold.
Runner (21) and gate (22) installed at 0)
'), the thermoplastic resin (12) is injected and filled into the cavity, that is, between each of the positioned parts. When this resin (12) is injected and filled, the tip of the core pin (4) of the coil bobbin (2) is inserted into the movable mold plate (20) which protrudes from the parting line of the mold toward the fixed mold plate (15).
), and the tip of the core pin (4) protrudes above the filled resin. In order to inject the resin into the cavity, a plurality of runners (21) and gates (22) are provided at equal intervals along the outer circumference of the coil bobbin (2) in order to ensure that the resin flows smoothly between each part. This is done through

上記のようにワイヤドットプリンタヘソ１〜を構成する
と、コアピン（４）の先端部が各部品間に充填されてそ
れらを一体に固定する樹脂面上に突出しているので、ワ
イヤドツトプリンタヘッドが昇温しで、充填された樹脂
が熱膨張しても、アマチュアピンの正常動作を阻害する
二とがない。When the wire dot printer heel 1 is configured as described above, the tip of the core pin (4) is filled between each component and protrudes above the resin surface that fixes them together, so the wire dot printer head heats up. Therefore, even if the filled resin thermally expands, there is no way that it will interfere with the normal operation of the armature pin.

また、射出成形により熱可塑性樹脂を射出充填するよう
にしたので、各部品を一体に固定する時間が短く、従来
の熱硬化性樹脂を使用した注型のように樹脂が固化する
まで放置する保管装置や保管スペースが不要である。ま
た回路基板（３）の背面に密着してスペーサ（１１）を
配設することにより、樹脂の射出充填圧による回路基板
（３）の変形が防止され、所要のワイヤドツトプリンタ
ヘッドを容易に製作できるようになった。またこのスペ
ーサ（１１）は、回路基板（３）の背面側への樹脂の充
填を大幅に減少させて、キャビティ内での樹脂の流動長
を小さくし、それにより樹脂の射出充填圧を小さくでき
ることから、射出充填圧による放熱体（１）の破損や回
路基板（３）の変形を防止する。In addition, since the thermoplastic resin is injected and filled using injection molding, the time required to fix each part together is shortened, and unlike conventional casting using thermosetting resin, storage is not required until the resin solidifies. No equipment or storage space required. In addition, by arranging the spacer (11) in close contact with the back surface of the circuit board (3), deformation of the circuit board (3) due to resin injection filling pressure is prevented, and the desired wire dot printer head can be easily manufactured. It became so. In addition, this spacer (11) can significantly reduce the amount of resin filling on the back side of the circuit board (3), thereby reducing the flow length of the resin within the cavity, thereby reducing the injection and filling pressure of the resin. This prevents damage to the heat sink (1) and deformation of the circuit board (3) due to injection filling pressure.

〔発明の効果〕〔Effect of the invention〕

ワイヤドツトプリンタヘッドを構成する各部品間に充填
されて、それらを一体化する樹脂面から、アマチュアピ
ンを動作させるコイルボビンのコアピン先端部を突出さ
せたので、ワイヤドツトプリンタヘッドの温度上昇に基
づくアマチュアピンの動作不良をなくすことができた。The tip of the core pin of the coil bobbin that operates the armature pin protrudes from the resin surface that is filled between the parts that make up the wire dot printer head and integrates them. We were able to eliminate malfunctions.

またその製作に際し、熱可塑性樹脂を用い、かつ回路−
Ｎ板の背面に密着してスペーサを配設し、射出成形によ
り各部品間に樹脂を充填するようにしたので、所要のワ
イヤトラ１〜プリンタパノ１−が容易に製作できるよう
になった。In addition, when manufacturing it, thermoplastic resin was used and the circuit
A spacer is disposed in close contact with the back surface of the N plate, and resin is filled between each part by injection molding, so that the required wire tractor 1 to printer pano 1 can be easily manufactured.

【図面の簡単な説明】[Brief explanation of drawings]

第１図（Ａ）および（８）図は、この発明の一実施例で
あるワイヤドツトプリンタヘッドの平面図および断面で
示した正面図、第２図はその要部を拡大して示した断面
図、第３図（Ａ）および（Ｂ）図ないし第５図（Ａ）お
よび（Ｂ）図はそれぞれこの発明のワイヤドツトプリン
タヘッドの製作方法を説明するための工程図であって、
それぞれ（Ａ）図はＴＺ面図、（１３）図は断面で示し
た正面図、第６図は同じくワイヤトノトプリンタパノ１
−の製作方法を説明するための工程図、第７図（、’ｌ
）および（Ｅｌ）図はそれぞれ従来のワイヤ１ヘノ１〜
プリンタパノＩ−の平面図および断面で示した正面図、
第８図はその要部を拡大して示した断面図である。FIGS. 1A and 8 are a plan view and a sectional front view of a wire dot printer head according to an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of the main parts thereof. , 3(A) and 3(B) to 5(A) and 5(B) are process diagrams for explaining the method of manufacturing the wire dot printer head of the present invention, respectively,
Figure (A) is a TZ view, Figure (13) is a front view shown in cross section, and Figure 6 is also a wire toner printer pano 1.
Figure 7 is a process diagram for explaining the manufacturing method of -.
) and (El) figures are respectively conventional wire 1 heno 1 ~
A plan view and a front view shown in cross section of the printer pano I-;
FIG. 8 is an enlarged sectional view of the main part.

Claims (2)

【特許請求の範囲】[Claims] （１）環状の放熱体と、環状に配列された複数のコアピ
ンをもつ環状コアおよび上記各コアピンのまわりに装着
された複数のコイルを有し、上記環状の放熱体の内側に
配設されるコイルボビンと、このコイルボビンの背面に
配設され、上記コイルボビンの各コイルに接続される回
路が形成された回路基板と、この回路基板の背面に密着
して上記環状の放熱体の内側に配設されるスペーサと、
上記コイルボビンの各コアピンの先端部を突出させて上
記コイルボビン、環状の放熱体、回路基板を一体にモー
ルドする熱可塑性樹脂充填物とを具備することを特徴と
するワイヤドットプリンタヘッド。(1) It has an annular heat radiator, an annular core having a plurality of core pins arranged in an annular shape, and a plurality of coils attached around each of the core pins, and is arranged inside the annular heat radiator. A coil bobbin, a circuit board disposed on the back surface of the coil bobbin and on which a circuit connected to each coil of the coil bobbin is formed, and a circuit board disposed inside the annular heat sink in close contact with the back surface of the circuit board. spacer and
A wire dot printer head characterized in that the wire dot printer head is provided with a thermoplastic resin filler for integrally molding the coil bobbin, an annular heat radiator, and a circuit board by protruding the tip of each core pin of the coil bobbin. （２）固定側型板に設けられたキャビティを構成する凹
部にスペーサ、回路基板、コイルボビンおよび放熱体を
所定の関係に位置決め装着する段階と、上記凹部に位置
決め装着されたコイルボビンの複数のコアピンの先端部
を包囲する入れ子を有する可動側型板を上記スペーサ、
回路基板、コイルボビンおよび放熱体が位置決め装着さ
れた固定側型板と組合わせて型締めする段階と、この型
締めされた固定側および可動側型板からなる金型に対し
て射出成形機から上記キャビティに熱可塑性樹脂を射出
充填する段階とからなることを特徴とするワイヤドット
プリンタヘッドの製作方法。(2) The step of positioning and mounting the spacer, circuit board, coil bobbin, and heat sink in a predetermined relationship in the recess that constitutes the cavity provided in the fixed side template, and the step of positioning and mounting the plurality of core pins of the coil bobbin that are positioned and installed in the recess. The movable side mold plate having a nest surrounding the tip part is attached to the spacer,
The circuit board, the coil bobbin, and the heat radiator are combined with the fixed-side template to which they are positioned and clamped, and the mold consisting of the clamped fixed-side and movable-side templates is moved from the injection molding machine to the above-mentioned mold plate. A method for manufacturing a wire dot printer head, comprising the step of injecting and filling a cavity with a thermoplastic resin.
JP60289194A 1985-12-24 1985-12-24 Wire dot printer head and manufacture thereof Granted JPS62148271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60289194A JPS62148271A (en) 1985-12-24 1985-12-24 Wire dot printer head and manufacture thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60289194A JPS62148271A (en) 1985-12-24 1985-12-24 Wire dot printer head and manufacture thereof

Publications (2)

Publication Number Publication Date
JPS62148271A true JPS62148271A (en) 1987-07-02
JPH058108B2 JPH058108B2 (en) 1993-02-01

Family

ID=17739992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60289194A Granted JPS62148271A (en) 1985-12-24 1985-12-24 Wire dot printer head and manufacture thereof

Country Status (1)

Country Link
JP (1) JPS62148271A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01139542U (en) * 1988-03-11 1989-09-25

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163579A (en) * 1981-02-25 1982-10-07 Honeywell Inf Systems Assembled body of electromagnet for mosaic printing head and its manufacture

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57163579A (en) * 1981-02-25 1982-10-07 Honeywell Inf Systems Assembled body of electromagnet for mosaic printing head and its manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01139542U (en) * 1988-03-11 1989-09-25

Also Published As

Publication number Publication date
JPH058108B2 (en) 1993-02-01

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