JPS62198110A - Injection molding machine for plastic magnet - Google Patents

Injection molding machine for plastic magnet

Info

Publication number
JPS62198110A
JPS62198110A JP3914986A JP3914986A JPS62198110A JP S62198110 A JPS62198110 A JP S62198110A JP 3914986 A JP3914986 A JP 3914986A JP 3914986 A JP3914986 A JP 3914986A JP S62198110 A JPS62198110 A JP S62198110A
Authority
JP
Japan
Prior art keywords
current
electromagnetic coil
injection molding
thyristor
plastic
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
JP3914986A
Other languages
Japanese (ja)
Other versions
JPH0575163B2 (en
Inventor
Masahiro Fujisawa
藤沢 方大
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.)
NIPPON MAGUNESU KK
Sumitomo Heavy Industries Ltd
Original Assignee
NIPPON MAGUNESU KK
Sumitomo Heavy Industries Ltd
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 NIPPON MAGUNESU KK, Sumitomo Heavy Industries Ltd filed Critical NIPPON MAGUNESU KK
Priority to JP3914986A priority Critical patent/JPS62198110A/en
Publication of JPS62198110A publication Critical patent/JPS62198110A/en
Publication of JPH0575163B2 publication Critical patent/JPH0575163B2/ja
Granted legal-status Critical Current

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  • Moulds For Moulding Plastics Or The Like (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

PURPOSE:To shorten the molding cycle of a plastic magnet by connecting bypass means in parallel with an electromagnetic coil when a current flowing to the coil is turned OFF, and disconnecting the coil from the means when the current to be measured after the current is OFF coincides with a set current value. CONSTITUTION:When thyristors 12, 15 of switch units 16, 17 are operated, currents flow to electromagnetic coils 6, 7, and when the currents are stabilized, melted magnetic plastic is injected in a cavity. When the currents are stabilized and a predetermined time is elapsed, the thyristors 12, 15 are turned OFF. When a thyristor 19 is simultaneously turned ON, an exciting current is abruptly attenuated. When the current value set in a current setter 23 coincides with that detected by a current detector 21 due to the attenuation of the exciting current, a controller 24 closes a switch 20, turns OFF the thyristor 19. As a result, the both terminals of the thyristor 19 become zero volt to continue the off state. The switch 20 is opened before the demagnetizing current flows.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はプラスチックマグネットの射出成形装置、特に
、射出成形時間を短縮することのできる射出成形装置に
関する。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an injection molding apparatus for plastic magnets, and particularly to an injection molding apparatus that can shorten injection molding time.

(従来の技術) プラスチックマグネットは、射出成形装置の金型のキャ
ビティ内に、フェライト、希土類等の磁性材料の粉末を
混入した合成樹脂材料(以下磁性プラスチックと呼ぶ)
を射出した状態で、射出成形装置に備えられた電磁コイ
ルによって磁場を発生させ、この磁場によって磁性材料
を異方化して成形されている。
(Prior art) Plastic magnets are synthetic resin materials (hereinafter referred to as magnetic plastics) in which powder of magnetic materials such as ferrite and rare earths are mixed into the mold cavity of injection molding equipment.
When the material is injected, a magnetic field is generated by an electromagnetic coil provided in the injection molding device, and this magnetic field makes the magnetic material anisotropic and molded.

ところで、一般に射出成形装置においてプラスチックマ
グネットを成形する場合、電磁コイルからの励磁磁界は
、キャビティ内への磁性グラスチックの射出直前に発生
させ、磁性プラスチ、りを異方化した後、今度は上記の
励磁磁界と逆向きの磁界(以下脱磁磁界という。)を発
生させて、磁力を消し、後述するように型開き時におけ
る成形されたグラスチックマグネットの取り出しを容易
にしている。
By the way, when plastic magnets are generally molded using an injection molding machine, the excitation magnetic field from the electromagnetic coil is generated immediately before injection of the magnetic plastic into the cavity, and after making the magnetic plastic anisotropic, the excitation magnetic field is generated as described above. A magnetic field in the opposite direction to the excitation magnetic field (hereinafter referred to as a demagnetizing magnetic field) is generated to eliminate the magnetic force and facilitate the removal of the molded plastic magnet when the mold is opened, as will be described later.

即ち、第3図及び第4図に示す如く、磁性材料で構成さ
れたダイパー1には磁性体の固定プレート2が固定され
ており、この固定プレート2の一面上には固定金型3が
固着されている。一方、ダイパー1には磁性体の可動プ
レート4が摺動可能に取り付けられており、この可動プ
レート4の一面上には可動金型5が固着されている。ダ
イパーされ、一方、可動金型5を取り巻くようにして電
磁コイル7が可動プレート4の一面上に配設されている
。
That is, as shown in FIGS. 3 and 4, a fixed plate 2 made of a magnetic material is fixed to a dieper 1 made of a magnetic material, and a fixed mold 3 is fixed on one surface of this fixed plate 2. has been done. On the other hand, a movable plate 4 made of a magnetic material is slidably attached to the dieper 1, and a movable mold 5 is fixed on one surface of the movable plate 4. On the other hand, an electromagnetic coil 7 is disposed on one surface of the movable plate 4 so as to surround the movable mold 5.

固定金型3の中央部には磁性マグネットを注入するため
のスグール8が形成され、このスグール8は固定金型3
と可動金型5とによって形成されるキャビティ9に連通
ずると共に固定プレート2を貫通して、射出シリンダ1
0が接続されておシ。
A sgur 8 for injecting a magnetic magnet is formed in the center of the fixed mold 3, and this sgur 8 is formed in the center of the fixed mold 3.
The injection cylinder 1 communicates with the cavity 9 formed by the movable mold 5 and passes through the fixed plate 2.
0 is connected.

この射出シリンダ10からキャビティ9内に磁性プラス
チックが注入される。
Magnetic plastic is injected into the cavity 9 from this injection cylinder 10.

なお、固定金型3及び可動金型5において、白色の部分
は磁性体を示し、一点鎖線の耕具で示す部分は非磁性体
を示す。
In addition, in the fixed mold 3 and the movable mold 5, the white part indicates a magnetic material, and the part indicated by a dot-dash line plowing tool indicates a non-magnetic material.

電磁コイル6及び7への通電によって発生した磁束は第
3図に実線矢印で示すように固定プレート2.タイバー
1.可動グレート4.可動金型5及び固定金型3を通る
閉磁気回路を構成する(なお2図示のように非磁性体で
構成された部分には磁束は通過しない)。電磁コイル6
及び7によって磁束を発生させた後、射出シリンダ10
から溶融状態の磁性プラスチックをキャビティ9内に射
出(充填)する。キャビティ9内に射出された磁性プラ
スチックの磁性粒子は電磁コイル6及び7による磁場に
よシ各磁性粒子の極性がこの磁場に平行になるように磁
気配向されるとともに、磁性プラスチックは冷却されて
、所定の形状に成形され、その結果所謂異方性プラスチ
ックマグネットが成形される。
The magnetic flux generated by energizing the electromagnetic coils 6 and 7 is transmitted to the fixed plate 2. as shown by the solid arrow in FIG. Tie bar 1. Movable grate 4. A closed magnetic circuit is formed that passes through the movable mold 5 and the fixed mold 3 (note that magnetic flux does not pass through the portions made of non-magnetic material as shown in FIG. 2). Electromagnetic coil 6
and 7, the injection cylinder 10
Then, molten magnetic plastic is injected (filled) into the cavity 9. The magnetic particles of the magnetic plastic injected into the cavity 9 are magnetically oriented by the magnetic field of the electromagnetic coils 6 and 7 so that the polarity of each magnetic particle is parallel to this magnetic field, and the magnetic plastic is cooled. It is molded into a predetermined shape, resulting in a so-called anisotropic plastic magnet.

キャビティ9内で成形されたプラスチックマグネットは
可動プレート4を左方向へ移動させることによって、即
ち型開きして取り出されるが、この時磁化したままのプ
ラスチ、クマグネットは金型3,5に付着するだめ、キ
ャビティ9からの取シ出しが困難である。また、グラス
チックマグネットの取シ出し時に、摩擦等によって生じ
たプラスチックマグネットの微小な破片あるいは粉が金
型3,5に付着する。その結果、成形品等が取出されな
いままに次工程の成形に移ると型締時に金型を損傷した
り、成形不良の原因となる。
The plastic magnet molded in the cavity 9 is taken out by moving the movable plate 4 to the left, that is, by opening the mold, but at this time, the magnetized plastic magnet remains attached to the molds 3 and 5. No, it is difficult to take it out from the cavity 9. Moreover, when the plastic magnet is taken out, minute fragments or powder of the plastic magnet generated by friction etc. adhere to the molds 3 and 5. As a result, if the next step of molding is performed without taking out the molded product, the mold may be damaged during mold clamping, or molding defects may occur.

従って、プラスチックマグネットの取り出しを容易にす
るため、また破片等の吸着を防止するだめ、一般に型開
前に金型に上述の磁場と逆向きの磁場をかけて、プラス
チックマグネットを所謂脱磁してから型開きして、グラ
スチックマグネットを取り出すようになっている。
Therefore, in order to make it easier to take out the plastic magnet and to prevent the adsorption of debris, the plastic magnet is generally demagnetized by applying a magnetic field in the opposite direction to the above-mentioned magnetic field to the mold before opening the mold. Open the mold and take out the glass magnet.

(発明が解決しようとする問題点) ところで、プラスチックマグネットの射出成形装置の場
合、型締完了後、電磁コイルに一定電圧を印加する。第
5図に示すように通電直後はコイルのリアクタンスが極
めて大きく1時間の経過とともに徐々に低下するため、
電磁コイルに流れる励磁電流が安定するまでに時間を要
する。
(Problems to be Solved by the Invention) In the case of a plastic magnet injection molding apparatus, a constant voltage is applied to the electromagnetic coil after mold clamping is completed. As shown in Figure 5, the reactance of the coil is extremely large immediately after energization, and gradually decreases over an hour.
It takes time for the excitation current flowing through the electromagnetic coil to stabilize.

励磁電流が安定した状態でキャビティ内に前述のように
溶融した磁性グラスチックを射出する。
While the excitation current is stable, the molten magnetic glass is injected into the cavity as described above.

磁性プラスチックの磁性粒子の磁気配向に必要な時間(
一般的成形条件にあっては通電開始後約6秒間)、電磁
コイルへの通電を行い、その後電磁コイルへの通電を断
つ。ところが、電磁コイルへの通電を断ってもコイルに
生じる逆起電力によって励磁電流は直ちにゼロにはなら
ず、第5図に示すように徐々に低下する(一般に5〜6
秒後にはゼロとなる)。
Time required for magnetic orientation of magnetic particles of magnetic plastic (
Under general molding conditions, the electromagnetic coil is energized for about 6 seconds after the start of energization, and then the electromagnetic coil is turned off. However, even if the energization to the electromagnetic coil is cut off, the excitation current does not immediately become zero due to the back electromotive force generated in the coil, but gradually decreases as shown in Figure 5 (generally 5 to 6
(becomes zero after a second).

また2図示はしないが、同様にプラスチックマグネット
脱磁のための脱磁電流も電磁コイルへの通電を断っても
直ちにゼロにはならない。
2.Although not shown in the drawings, similarly, the demagnetizing current for demagnetizing the plastic magnet does not immediately become zero even if the energization to the electromagnetic coil is cut off.

このように、励磁電流全印加し、磁性プラスチックの射
出完了後、電磁コイルの通電を断つが。
In this way, after applying the full excitation current and completing injection of the magnetic plastic, the current to the electromagnetic coil is cut off.

電磁コイルの電磁エネルギー消滅の後でなければ脱磁電
流を印加できない。従って、従来の射出成形装置の場合
、電磁エネルギーの消滅には約5〜6秒の時間が必要で
あシ、この消滅時間は励磁磁界印加時間の約1/2も必
要となる。同様に脱磁電流の印加による電磁エネルギー
の消滅にも時間を要する。このようにグラスチックマグ
ネットの成形に当っては励磁電流等による電磁エネルギ
ーの消滅を考慮しなければならないため、グラスチック
マグネットの成形サイクルが短縮できないという問題点
がある。
The demagnetizing current cannot be applied until after the electromagnetic energy of the electromagnetic coil has disappeared. Therefore, in the case of a conventional injection molding apparatus, about 5 to 6 seconds are required for the electromagnetic energy to disappear, and this extinction time is about 1/2 of the excitation magnetic field application time. Similarly, it takes time for the electromagnetic energy to disappear due to the application of the demagnetizing current. As described above, when molding a plastic magnet, it is necessary to take into consideration the extinction of electromagnetic energy due to excitation current, etc., so there is a problem that the molding cycle of the plastic magnet cannot be shortened.

本発明の目的はプラスチックマグネットの成形サイクル
を短縮し、生産性の向上をはかることができる射出成形
装置を提供することにある。
An object of the present invention is to provide an injection molding apparatus that can shorten the molding cycle of plastic magnets and improve productivity.

(問題点を解決するための手段) 本発明は、電磁コイルを備え、射出成形用キャビティに
充填される磁性材料を混入したプラスチックを磁場成形
するための射出成形装置において。
(Means for Solving the Problems) The present invention provides an injection molding apparatus that is equipped with an electromagnetic coil and is used to magnetically mold plastic mixed with a magnetic material that is filled into an injection molding cavity.

予め定められた電流値を設定する設定手段と、電磁コイ
ルに流れる電流を計測する計測手段と、電磁コイルに流
れる電流をバイパスするパイ・セス手段と、このバイパ
ス手段と電磁コイルとの接続を規定する制御手段とを有
し、電磁コイルに流れる電流がオフとされた時点で、バ
イパス手段が電磁コイルに並列に接続され、制御手段は
上記のオフ後に計測手段によって計測される電流が設定
手段に設定された電流値と一致するとバイパス手段と電
磁コイルを切シ放すようにしたことを特徴としている。
A setting means for setting a predetermined current value, a measuring means for measuring the current flowing through the electromagnetic coil, a bypass means for bypassing the current flowing through the electromagnetic coil, and a connection between the bypass means and the electromagnetic coil are defined. When the current flowing through the electromagnetic coil is turned off, the bypass means is connected in parallel to the electromagnetic coil, and the control means controls the current measured by the measuring means after the above-mentioned turning off to the setting means. It is characterized in that the bypass means and the electromagnetic coil are disconnected when the current value matches the set value.

(実施例) 以下本発明について実施例によって説明する。(Example) The present invention will be explained below with reference to Examples.

なお、射出成形装置自体の構成は第3図及び第4図に示
した従来装置と同様であるから説明を省略する。
The structure of the injection molding apparatus itself is the same as that of the conventional apparatus shown in FIGS. 3 and 4, so a description thereof will be omitted.

第1図を参照して2本発明による射出成形装置の給電制
御装置について説明する。
A power supply control device for an injection molding apparatus according to the present invention will be described with reference to FIG.

トランス11にはサイリスタ12及び13を備えたスイ
ッチ装置16とサイリスタ14及び15を備えたスイッ
チ装置17が接続され、スイッチ−装置16及び17は
同一の中線を経てトランス11の所定のタップに接続さ
れている。
A switch device 16 including thyristors 12 and 13 and a switch device 17 including thyristors 14 and 15 are connected to the transformer 11, and the switch devices 16 and 17 are connected to predetermined taps of the transformer 11 through the same center line. has been done.

上記の中線には電磁コイルに流れる電流の大きさを検知
する電流検出回路21が配設され、tた中線にはコネク
タ18を介して電磁コイル6(あるいは電磁コイル7)
が連結されておシ、電磁コイル6.7と並列に中°線に
は後述するパイ・平ス回路22が連結されている。バイ
パス回路2tは図示のようにサイリスタ19を備えてお
り、サイリスタ19と逆並列にスイッチ20が接続され
ている。上述のサイリスタ12,13,14,15゜及
び19.スイッチ20は制御装置24によってオンオフ
制御される。そしてこの制御装置24には電流検出回路
21及び予め定められた電流値が設定される電流設定器
23が連結されている。
A current detection circuit 21 that detects the magnitude of the current flowing through the electromagnetic coil is disposed on the middle line, and the electromagnetic coil 6 (or electromagnetic coil 7) is connected to the middle line through the connector 18.
is connected to the center wire in parallel with the electromagnetic coil 6.7, and a pi/plane circuit 22, which will be described later, is connected to the center line. The bypass circuit 2t includes a thyristor 19 as shown, and a switch 20 is connected in antiparallel to the thyristor 19. The above-mentioned thyristors 12, 13, 14, 15° and 19. The switch 20 is turned on and off by a control device 24. The control device 24 is connected to a current detection circuit 21 and a current setter 23 in which a predetermined current value is set.

次に第2図も参照して、上述の給電制御装置の動作につ
いて説明する。
Next, referring also to FIG. 2, the operation of the above-described power supply control device will be explained.

スイッチ装置16のサイリスタ12及びスイッチ装置1
7のサイリスタ15を動作させると、実線矢印で示す電
流がコネクタ18を通って電磁コイル6.7に流れる。
Thyristor 12 of switch device 16 and switch device 1
When the thyristor 15 of No. 7 is operated, a current shown by a solid arrow flows through the connector 18 to the electromagnetic coil 6.7.

電流検出回路21で示される電流か安定した状態となっ
たら(第2図にB点で示す)溶融した磁性プラスチック
をキャビティ内に射出する。磁性グラスチックの磁性粒
子の磁気配向に必要な時間電磁コイル6.7への通電を
行った時点(第2図C)で、即ち、電流が安定状態とな
って所定の時間が経過すると、サイリスタ12及び15
をオフし、同時にサイリスタ19をオンする。サイリス
タ19のオンによって励磁電流がサイリスタ19を通っ
て流れるようになるから、励磁電流は急激に減衰する。
When the current indicated by the current detection circuit 21 becomes stable (as indicated by point B in FIG. 2), the molten magnetic plastic is injected into the cavity. When the electromagnetic coil 6.7 is energized for the time required for the magnetic orientation of the magnetic particles of the magnetic glass (Fig. 2C), that is, when the current becomes stable and a predetermined period of time has elapsed, the thyristor 12 and 15
is turned off, and at the same time the thyristor 19 is turned on. Since the excitation current starts to flow through the thyristor 19 by turning on the thyristor 19, the excitation current is rapidly attenuated.

電流設定器23に設定されている電流値(例えば電流値
ゼロ)と励磁電流の減衰によって電流検出回路21で検
知される電流値が一致すると(第2図において07点)
制御装置24はスイッチ20を閉じるとともにサイリス
タ19をオフとする。
When the current value set in the current setting device 23 (for example, current value zero) matches the current value detected by the current detection circuit 21 due to the attenuation of the excitation current (point 07 in Fig. 2).
The control device 24 closes the switch 20 and turns off the thyristor 19.

その結果、サイリスタ19の両端は零電位となってオフ
状態が持続する。そして、脱磁電流通電前にスイッチ2
0は開とされる。
As a result, both ends of the thyristor 19 have a zero potential and remain off. Then, before applying the demagnetizing current, switch 2
0 is considered open.

このように電磁コイルに流れる電流をオフとした時点で
実質的にバイパス回路を電磁コイルに並列に接続してい
るから、励磁電流が急激に減衰し。
In this way, when the current flowing through the electromagnetic coil is turned off, the bypass circuit is essentially connected in parallel to the electromagnetic coil, so the excitation current is rapidly attenuated.

しかも励磁電流が減衰して例えばゼロとなると直ちにバ
イパス回路22と電磁コイル6を切り放し脱磁電流印加
の場合は、サイリスタ13及び14をオンして、破線矢
印で示す方向に電流を流す。
Moreover, as soon as the excitation current attenuates to zero, for example, the bypass circuit 22 and the electromagnetic coil 6 are disconnected, and in the case of applying a demagnetizing current, the thyristors 13 and 14 are turned on, and the current flows in the direction shown by the broken line arrow.

また、第1図には示していないか、別にサイリスタを用
いれば脱磁電流を急激に減衰させることができることは
明らかである。
Furthermore, it is clear that the demagnetizing current can be rapidly attenuated by using a thyristor, which is not shown in FIG. 1 or by using a separate thyristor.

(発明の効果) 以上説明したように本発明による射出成形装置ではプラ
スチックマグネットの成形に必要な励磁時間(及び脱磁
時間)を実質的に短くでき、fラスナックマグネットの
生産性が向上するという利点がある。
(Effects of the Invention) As explained above, the injection molding apparatus according to the present invention can substantially shorten the excitation time (and demagnetization time) required for molding plastic magnets, and improve the productivity of f-last snack magnets. There are advantages.

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

第1図は本発明による射出成形装置に用いられる給電制
御装置を示す回路図、第2図は本発明による射出成形装
置に印加される励磁電流を示す波形図、第3図は射出成
形装置一部を一部破断して示す図、第4図は第3図のA
−A線断面図、第5図は従来の射出成形装置に印加され
る励磁電流を示す波形図。 1・・・ダイパー、2・・・固定プレート、3・・・固
定金型、4・・・可動プレート、5・・・可動金型、6
,7・・・電磁コイル、8・・・スプール、9・・・キ
ャビティ。 10・・・射出シリンダ、11・・・トランス、12゜
13.14,15・・・サイリスタ、16.17・・・
スイッチ装置、18・・・コネクタ、19・・・サイリ
スタ。 20・・・スイッチ、21・・・電流検出回路、22・
・・バイパス回路、23・・・電流設定器、24・・・
制御装置。 第1図 第3図
FIG. 1 is a circuit diagram showing a power supply control device used in an injection molding apparatus according to the present invention, FIG. 2 is a waveform diagram showing an excitation current applied to an injection molding apparatus according to the present invention, and FIG. A partially cutaway view of the section, Figure 4 is A of Figure 3.
- A sectional view, and FIG. 5 is a waveform diagram showing an excitation current applied to a conventional injection molding apparatus. DESCRIPTION OF SYMBOLS 1... Diaper, 2... Fixed plate, 3... Fixed mold, 4... Movable plate, 5... Movable mold, 6
, 7... Electromagnetic coil, 8... Spool, 9... Cavity. 10... Injection cylinder, 11... Transformer, 12゜13.14, 15... Thyristor, 16.17...
Switch device, 18... Connector, 19... Thyristor. 20... Switch, 21... Current detection circuit, 22.
...Bypass circuit, 23...Current setting device, 24...
Control device. Figure 1 Figure 3

Claims (1)

【特許請求の範囲】[Claims] 1、電磁コイルを備え、射出成形用キャビティに充填さ
れる磁性材料を混入したプラスチックを磁場成形するた
めの射出成形装置において、予め定められた電流値を設
定する設定手段と、前記電磁コイルに流れる電流を計測
する計測手段と、前記電磁コイルに流れる電流をバイパ
スするためのバイパス手段と、該バイパス手段と前記電
磁コイルとの接続を規定する制御手段とを備え、前記電
磁コイルに流れる電流がオフとされた時点で、前記バイ
パス手段が前記電磁コイルと並列に接続され、前記制御
手段は該オフ後に前記計測手段によって計測される電流
が前記設定手段に設定された電流値と一致すると前記バ
イパス手段と前記電磁コイルとを切り放すようにしたこ
とを特徴とするプラスチックマグネットの射出成形装置
。
1. In an injection molding apparatus equipped with an electromagnetic coil for magnetic field molding of plastic mixed with a magnetic material to be filled into an injection molding cavity, a setting means for setting a predetermined current value, and a setting means for setting a predetermined current value, and a current flowing through the electromagnetic coil. A measuring means for measuring a current, a bypass means for bypassing the current flowing through the electromagnetic coil, and a control means regulating a connection between the bypass means and the electromagnetic coil, and the current flowing through the electromagnetic coil is turned off. At the time when the bypass means is connected in parallel with the electromagnetic coil, the control means controls the bypass means when the current measured by the measuring means after turning off matches the current value set in the setting means. An injection molding apparatus for a plastic magnet, characterized in that the and the electromagnetic coil are separated.
JP3914986A 1986-02-26 1986-02-26 Injection molding machine for plastic magnet Granted JPS62198110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3914986A JPS62198110A (en) 1986-02-26 1986-02-26 Injection molding machine for plastic magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3914986A JPS62198110A (en) 1986-02-26 1986-02-26 Injection molding machine for plastic magnet

Publications (2)

Publication Number Publication Date
JPS62198110A true JPS62198110A (en) 1987-09-01
JPH0575163B2 JPH0575163B2 (en) 1993-10-20

Family

ID=12545050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3914986A Granted JPS62198110A (en) 1986-02-26 1986-02-26 Injection molding machine for plastic magnet

Country Status (1)

Country Link
JP (1) JPS62198110A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109686559A (en) * 2018-12-30 2019-04-26 横店集团东磁股份有限公司 A kind of two-way hot melt and automatic magnetizing method for tooth form modeling magnetic

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109686559A (en) * 2018-12-30 2019-04-26 横店集团东磁股份有限公司 A kind of two-way hot melt and automatic magnetizing method for tooth form modeling magnetic

Also Published As

Publication number Publication date
JPH0575163B2 (en) 1993-10-20

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