JPH01186285A - Impulse current welding machine - Google Patents
Impulse current welding machineInfo
- Publication number
- JPH01186285A JPH01186285A JP790788A JP790788A JPH01186285A JP H01186285 A JPH01186285 A JP H01186285A JP 790788 A JP790788 A JP 790788A JP 790788 A JP790788 A JP 790788A JP H01186285 A JPH01186285 A JP H01186285A
- Authority
- JP
- Japan
- Prior art keywords
- current
- welding
- charging
- transformer
- capacitor
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims abstract description 87
- 230000009466 transformation Effects 0.000 claims abstract description 3
- 230000001131 transforming effect Effects 0.000 claims abstract 3
- 238000004804 winding Methods 0.000 claims description 33
- 230000005284 excitation Effects 0.000 claims description 22
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000003990 capacitor Substances 0.000 abstract description 43
- 238000007599 discharging Methods 0.000 abstract description 16
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Arc Welding Control (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、コンデンサに充電された電荷を急速に放電
するときのエネルギーを利用して溶接する′ａ撃電流溶
接機に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shock current welding machine that performs welding by utilizing the energy generated when the electric charge stored in a capacitor is rapidly discharged.
（従来の技術〕
この種の従来の衝撃電流溶接機の制御装置を第３図に示
す。同図において、従来の衝撃電流溶接機は、溶接電流
を供給する入力電源（１）と、充電電流制限用のリアク
タ（２）と、充電電流を制御する充電用サイリスタ（３
）と、上記入力電源（１）から電荷の供給を受けて充電
されるコンデンサ（４）と、該コンデンサ（４）に並列
に接続され、コンデンサ（４）への逆電圧の印加を防止
するダイオード（５）と、上記コンデンサ（４）に充電
された電荷を放電する放電用サイリスタ（６）と、該放
電用サイリスタ（６）の導通時にコンデンサ（４）から
放電される溶接電流を変圧する溶接トランス（７）と、
該溶接トランス（７）への通電方向を１回の放電ごとに
切換える主切換え電磁開閉器（８）と、上記溶接トラン
ス（７）にて変圧された溶接電流が供給されて溶接を行
う溶接部（９）とを備える構成である。(Prior Art) A control device of this type of conventional impact current welding machine is shown in Fig. 3. In the figure, the conventional impact current welding machine has an input power source (1) that supplies welding current, and a charging current. A limiting reactor (2) and a charging thyristor (3) that controls charging current.
), a capacitor (4) charged by receiving charge from the input power supply (1), and a diode connected in parallel to the capacitor (4) to prevent application of reverse voltage to the capacitor (4). (5), a discharging thyristor (6) that discharges the electric charge charged in the capacitor (4), and a welding that transforms the welding current discharged from the capacitor (4) when the discharging thyristor (6) is conductive. transformer (7) and
A main switching electromagnetic switch (8) that switches the direction of energization to the welding transformer (7) for each discharge, and a welding section where welding is performed by being supplied with the welding current transformed by the welding transformer (7). (9).
次に、上記従来装置の動作について説明する。Next, the operation of the above conventional device will be explained.
充電用サイリスタ（３）のゲートにゲート電流を流すこ
とにより充電用サイリスタ（３）が導通状態となり、入
力電源（１） よりリアクタ（２）で最大値を制限され
た電流がコンデンサ（４）に流れ、コンデンサ（４）が
充電される。コンデンサ（４）がある電圧まで充電され
ると、充電用サイリスタ（３）へのゲート電流を遮断す
る。次に放電用サイリスタ（６）のゲートにゲート電流
を流すことにより、放電用サイリスタ（６）が導通状態
となり、コンデンサ（４）に充電された電荷は、放電用
サイリスタ（６）、電磁開閉器（８）を介して溶接トラ
ンス（７）に溶接電流が供給される。この溶接トランス
（７）は溶接電流を任意の値に変圧して溶接部（９）に
溶接電流を供給する。この供給された溶接電流により溶
接部（９）にて溶接を行なう。The charging thyristor (3) becomes conductive by passing a gate current to the gate of the charging thyristor (3), and the current, whose maximum value is limited by the reactor (2), flows from the input power supply (1) to the capacitor (4). The capacitor (4) is charged. When the capacitor (4) is charged to a certain voltage, the gate current to the charging thyristor (3) is cut off. Next, by passing a gate current through the gate of the discharging thyristor (6), the discharging thyristor (6) becomes conductive, and the electric charge charged in the capacitor (4) is transferred to the discharging thyristor (6) and the electromagnetic switch. Welding current is supplied to the welding transformer (7) via (8). This welding transformer (7) transforms the welding current to an arbitrary value and supplies the welding current to the welding part (9). Welding is performed at the welding portion (9) using this supplied welding current.
次に再び、上記と同様にコンデンサ（４）に充電して、
その電荷を放電するが、その際、溶接トランス（７）へ
の放電電流の方向を電磁開閉器（８）にて切換え、溶接
トランス（７）の励磁方向を換え溶接トランス（７）の
磁気飽和を防いでいる。Next, charge the capacitor (4) again in the same way as above,
The electric charge is discharged, but at that time, the direction of the discharge current to the welding transformer (7) is switched by the electromagnetic switch (8), and the excitation direction of the welding transformer (7) is changed to magnetic saturation of the welding transformer (7). is prevented.
尚、放電用サイリスタ（６）、溶接トランス（ア）、電
磁開閉器（８）を経る放電回路には、リアクタンスが必
ず存在することから、コンデンサ（４）には逆電圧が加
わることとなり、コンデンサ（４）を保護する必要があ
る。このためコンデンサ（４）にダイオード（５）を並
列に接続し、上記逆電圧からコンデンサ（４）を保護す
る必要がある。In addition, since reactance always exists in the discharge circuit that passes through the discharge thyristor (6), welding transformer (A), and electromagnetic switch (8), a reverse voltage will be applied to the capacitor (4), and the capacitor (4) needs to be protected. Therefore, it is necessary to connect a diode (5) in parallel to the capacitor (4) to protect the capacitor (4) from the above reverse voltage.
（発明が解決しようとする課題〕
従来の衝撃電流溶接機は以上のように構成されているの
で、コンデンサへの充電電流の最大値を制限するために
リアクタを設ける必要があり、また溶接トランスの励磁
方向を１回の放電ごとに変えるために、溶接トランスへ
の放電電流方向を切換える電磁開閉器を設けなければな
らず、回路構成が複雑化するという課題があった。また
溶接部に流れる電流の方向は１回の放電ごとに変わって
しまい、表面処理鋼板等の電流が流れる方向により溶接
性に影響する溶接物では溶接部（９）での電流の方向を
考慮する必要がある等の課題があった。(Problems to be Solved by the Invention) Since the conventional impact current welding machine is configured as described above, it is necessary to provide a reactor to limit the maximum value of charging current to the capacitor, and it is necessary to provide a reactor to limit the maximum value of charging current to the capacitor. In order to change the excitation direction for each discharge, an electromagnetic switch must be provided to switch the direction of the discharge current to the welding transformer, which poses the problem of complicating the circuit configuration. The direction of the weld changes with each discharge, and for welded products such as surface-treated steel plates where weldability is affected by the direction in which the current flows, it is necessary to consider the direction of the current at the weld (9). was there.
この発明は上記のような課題を解消するためになされた
もので、溶接電流を供給する回路の回路構成を簡略化で
き、溶接トランスの磁気飽和を防止すると共に、溶接性
の向上を図ることができる衝撃電流溶接機を得ることを
目的とする。This invention was made to solve the above problems, and it is possible to simplify the circuit configuration of the circuit that supplies welding current, prevent magnetic saturation of the welding transformer, and improve weldability. The purpose is to obtain an impact current welding machine that can.
この発明に係る衝撃電流溶接機は、溶接のための電流を
供給する人力電源からの充電電流を充電制御手段の制御
にて蓄電手段に充電し、この充電された電荷の放電電流
を溶接電流変圧手段の変圧巻線にて変圧し、入力電源と
充電制御手段との間に接続されて変圧巻線の鉄心と共通
鉄心とする溶接電流変圧手段の逆励磁巻線にて蓄電手段
の充電時に変圧巻線の励磁方向に対して逆励磁し、蓄電
手段の充電時に変圧巻線の一次側を短絡手段にて短絡し
、充電された蓄電手段の放電電流にて溶接手段で溶接を
行なうものである。The impact current welding machine according to the present invention charges a charging current from a human-powered power source that supplies a current for welding to a power storage means under the control of a charging control means, and converts the discharge current of the charged charge into a welding current transformer. The voltage is transformed by the transformer winding of the means, and the welding current is connected between the input power supply and the charging control means, and the iron core of the transformer winding is used as a common core.The reverse excitation winding of the transformer means transforms the voltage when charging the power storage means. The winding is reversely excited in the excitation direction, the primary side of the transformer winding is short-circuited by the short-circuiting means when the power storage means is charged, and welding is performed by the welding means using the discharge current of the charged power storage means. .
この発明における溶接電流変圧手段は、蓄電手段の充電
時に変圧巻線の励磁方向に対して逆向きに逆励磁巻線を
励磁させて磁気・飽和を防止し、蓄電手段の充電時に短
絡手段にて変圧巻線の一次側を短絡して、励磁電流以上
の電流が逆励磁巻線を介して充電電流して蓄電手段に充
電され、短時間で充電することとなる。The welding current transformation means in this invention prevents magnetism and saturation by exciting a reverse excitation winding in a direction opposite to the excitation direction of the transformer winding when charging the power storage means, and by short-circuiting the winding when charging the power storage means. By short-circuiting the primary side of the transformer winding, a current equal to or higher than the excitation current flows through the reverse excitation winding as a charging current to charge the power storage means, thereby charging the power storage means in a short time.
（実施例〕 以下この発明の一実施例を第１図に基づいて説明する。(Example〕 An embodiment of the present invention will be described below with reference to FIG.
同図において本実施例に係る衝撃電流溶接機は、溶接の
ための電流を人力する入力電源（１）と、充電電流を制
御する充電用サイリスタ（３）と、上記入力電源（１）
より電荷の供給を受けて充電されるコンデンサ（４）と
、該コンデンサ（４）に並列に接続され、コンデンサ（
４）への逆電圧の印加を防止するダイオード（５）と、
上記コンデンサ（４）に充電された電荷を放電する放電
用サイリスタ（６）と、該放電用サイリスタ（６）の導
通時にコンデンサ（４）から放電される溶接電流を変圧
する変圧巻線（７ａ）及び該変圧巻線（７ａ）の鉄心を
共通鉄心として逆励磁する逆励磁用巻線を有する溶接ト
ランス（７）と、該溶接トランス（７）の変圧巻線（７
ａ）にて変圧された溶接電流が供給されて溶接を行う溶
接部（９）と、上記コンデンサ（４）が充電中に閉路し
、上記溶接トランス（７）の励磁電流以上の電流を逆励
磁用巻線（７ｂ）に流す短絡用電磁開閉器（１０）とを
備える構成である。In the same figure, the impact current welding machine according to the present embodiment includes an input power source (1) that manually generates a current for welding, a charging thyristor (3) that controls the charging current, and the input power source (1).
A capacitor (4) is connected in parallel to the capacitor (4) and is charged by receiving charge from the capacitor (4).
4) a diode (5) that prevents the application of reverse voltage to the
A discharging thyristor (6) that discharges the electric charge charged in the capacitor (4), and a transformer winding (7a) that transforms the welding current discharged from the capacitor (4) when the discharging thyristor (6) is conductive. and a welding transformer (7) having a reverse excitation winding that reversely excites the iron core of the transformer winding (7a) as a common core; and a transformer winding (7) of the welding transformer (7).
The welding part (9) to which the welding current transformed in a) is supplied to perform welding and the capacitor (4) are closed during charging, and reverse excitation with a current higher than the excitation current of the welding transformer (7). This configuration includes a short-circuiting electromagnetic switch (10) for supplying current to the short-circuit winding (7b).
次に上記構成に基づいて本実施例の動作について説明す
る。まず、短絡用電磁開閉器（１０）を閉路すると共に
、充電用サイリスタ（３）のゲートにゲート電流を流す
ことにより、充電用サイリスタ（３）が導通状態となり
、入力電源（１）より、溶接トランス（７）の逆励磁用
巻線（７ｂ）を通って電流がコンデンサ（４）に流れ、
コンデンサ（４）が充電される。その際、短絡用電磁開
閉器（１０）にて短絡された溶接トランス（７）の変圧
巻線（７ａ）の−次側にて２次電流が流れるため、充電
用サイリスタ（３）を通って流れるコンデンサ（４）へ
の充電電流は溶接トランス（７）の励磁電流以上の電流
が流れることとなる。そして、コンデンサ（４）が充電
されるのと同時に溶接トランス（７）が一定の方向に励
磁される。コンデンサ（４）が、ある電圧まで充電され
ると充電用サイリスタ（３）のゲート電流を遮断し、短
絡用電磁開閉器（１０）を開路する。Next, the operation of this embodiment will be explained based on the above configuration. First, by closing the short circuit electromagnetic switch (10) and passing a gate current to the gate of the charging thyristor (3), the charging thyristor (3) becomes conductive, and the input power source (1) Current flows through the reverse excitation winding (7b) of the transformer (7) to the capacitor (4),
Capacitor (4) is charged. At that time, a secondary current flows on the negative side of the transformer winding (7a) of the welding transformer (7), which is short-circuited by the short-circuit electromagnetic switch (10), so it passes through the charging thyristor (3). The charging current flowing to the capacitor (4) is greater than the excitation current of the welding transformer (7). At the same time as the capacitor (4) is charged, the welding transformer (7) is excited in a certain direction. When the capacitor (4) is charged to a certain voltage, it cuts off the gate current of the charging thyristor (3) and opens the short circuit electromagnetic switch (10).
さらに、放電用サイリスタ（６）のゲートにゲート電流
を流すことにより、放電用サイリスタ（６）が導通状態
となりコンデンサ（４）に充電された電荷は放電用サイ
リスタ（６）を介して溶接トランス（７）に溶接電流が
供給される。この溶接トランス（７）は、溶接電流を任
意の値に変圧して溶接部（９）に溶接電流を供給して溶
接部（９）にて溶接を行なう。この際溶接トランス（７
）は、コンデンサ（４）からの放電電流によりコンデン
サ（４）への充電の時と逆の方向に励磁される。Furthermore, by passing a gate current through the gate of the discharging thyristor (6), the discharging thyristor (6) becomes conductive, and the electric charge stored in the capacitor (4) is transferred to the welding transformer via the discharging thyristor (6). 7) is supplied with welding current. This welding transformer (7) transforms the welding current to an arbitrary value, supplies the welding current to the welding part (9), and performs welding at the welding part (9). At this time, welding transformer (7
) is excited by the discharge current from the capacitor (4) in the opposite direction to that when charging the capacitor (4).
また、再び溶接する際には、上記動作の繰り返しとなる
が、コンデンサ（４）に充電する際、溶接トランス（７
）は、コンデンサ（４）の電荷を放電する際と逆の方向
に励磁される。尚、放電用サイリスタ（６）、溶接トラ
ンス（７）を経る放電回路には、リアクタンスが必ず存
在することから、コンデンサ（４）には逆電圧が加わる
こととなり、コンデンサ（４）を保護する必要がある。In addition, when welding again, the above operation is repeated, but when charging the capacitor (4), welding transformer (7)
) is excited in the opposite direction to when discharging the charge of the capacitor (4). In addition, since reactance always exists in the discharge circuit that passes through the discharge thyristor (6) and the welding transformer (7), a reverse voltage will be applied to the capacitor (4), so it is necessary to protect the capacitor (4). There is.
このため、コンデンサ（４）にダイオード（５）を並列
に接続し、上記逆電圧からコンデンサ（４）を保護する
必要がある。Therefore, it is necessary to connect a diode (5) in parallel to the capacitor (4) to protect the capacitor (4) from the reverse voltage.
なお、上記実施例において、コンデンサ（４）への充電
中、溶接トランス（７）はコンデンサ（４）の電荷放電
用巻線を短絡用電磁開閉器（１０）で短絡したが、第２
図に示した様に抵抗器（１１）を介して短絡する構成と
してもよい。In the above embodiment, while charging the capacitor (4), the welding transformer (7) short-circuited the charge discharging winding of the capacitor (4) with the short-circuiting electromagnetic switch (10).
As shown in the figure, a short circuit may be used via a resistor (11).
また、上記実施例では、衝撃電流溶接機について説明し
たが、トランスに直流電流を流す回路構成の装置でもよ
く、上記実施例と同様な効果が得られる。Further, in the above embodiments, an impact current welding machine has been described, but a device having a circuit configuration in which direct current is passed through a transformer may be used, and the same effects as in the above embodiments can be obtained.
（発明の効果）
以上のように、この発明によれば入力電源からの充電電
流を充電制御手段の制御にて蓄電手段に充電し、この充
電された電荷の放電電流を溶接トランスの変圧巻線にて
変圧し、人力電源と充電制御手段との間に接続されて変
圧巻線の鉄心を共通鉄心とする溶接トランスの逆励磁巻
線にて蓄電手段の充電時に変圧巻線の励磁の向きと逆向
きに励磁′し、蓄電手段の充電時に変圧巻線の一次側を
短絡手段にて短絡し、蓄電手段に充電された電荷を放電
電流として溶接手段に供給して溶接する構成を採ったこ
とから、充電時の逆励磁巻線による逆向きの励磁により
溶接トランスの磁気飽和を防止すると共に励磁電流以上
の電流が逆励磁巻線を介して蓄電手段に充電できること
となり、装置の回路構成が簡略化でき、短時間で充電で
きるという効果を奏する。さらに、溶接特性を向上させ
るという効果を有する。(Effects of the Invention) As described above, according to the present invention, the charging current from the input power source is charged into the storage means under the control of the charging control means, and the discharge current of the charged electric charge is applied to the transformer winding of the welding transformer. The reverse excitation winding of the welding transformer, which is connected between the human power source and the charging control means and has the iron core of the transformer winding as a common iron core, determines the direction of excitation of the transformer winding when charging the power storage means. The transformer is energized in the opposite direction, the primary side of the transformer winding is short-circuited by the short-circuiting means when the power storage means is charged, and the electric charge stored in the power storage means is supplied as a discharge current to the welding means for welding. Therefore, magnetic saturation of the welding transformer is prevented by excitation in the opposite direction by the reverse excitation winding during charging, and a current greater than the excitation current can be charged to the storage means via the reverse excitation winding, simplifying the circuit configuration of the device. It has the advantage of being able to be recharged in a short time. Furthermore, it has the effect of improving welding characteristics.
第１図はこの発明の一実施例に係る衝撃電流溶接機の回
路構成図、第２図はこの発明の他の実施例の回路構成図
、第３図は従来の衝撃電流溶接機の回路構成図を示す。
（１）・・・入力電源 （２）・・・リアクタ
（３）・・・充電用サイリスタ （４）・・・コンデン
サ（５）・・・ダイオード
（６）・・・放電用サイリスタ （７）・・・溶接トラ
ンス（７ａ）・・・変圧巻線 （７ｂ）・・・
逆励磁巻線（８）・・・電磁開閉器 （９）・・
・溶接部なお、図中同一符号は同−又は相当部分を示す
。Fig. 1 is a circuit diagram of an impact current welding machine according to an embodiment of the present invention, Fig. 2 is a circuit diagram of another embodiment of the invention, and Fig. 3 is a circuit diagram of a conventional impact current welding machine. Show the diagram. (1) Input power supply (2) Reactor (3) Charging thyristor (4) Capacitor (5) Diode (6) Discharging thyristor (7) ...Welding transformer (7a)...Transformer winding (7b)...
Reverse excitation winding (8)...Electromagnetic switch (9)...
・Welded parts Note that the same reference numerals in the drawings indicate the same or equivalent parts.
Claims (1)
らの充電電流を制御する充電制御手段と、該充電制御手
段の制御に基づき上記入力電源の充電電流の供給を受け
て電荷を蓄積する蓄電手段と、該蓄電手段に充電された
電荷の放電を制御する放電制御手段と、該放電制御手段
の制御にて蓄電手段の電荷放電による供給電流を変圧す
る変圧巻線及び該変圧巻線の鉄心を共通鉄心とし、上記
入力電源と充電制御手段との間に接続され、蓄電手段の
充電時に変圧巻線の励磁方向に対し逆励磁する逆励磁巻
線を有する溶接電流変圧手段と、該溶接電流変圧手段の
変圧巻線の一次側を上記蓄電手段の充電中に短絡する短
絡手段と、上記溶接電流変圧手段の変圧巻線の変流によ
る溶接電流にて溶接を行なう溶接手段とを備えることを
特徴とする衝撃電流溶接機。an input power source that supplies a current for welding; a charging control means that controls a charging current from the input power source; and an electric charge stored in response to the supply of charging current from the input power source under the control of the charging control means. A power storage means, a discharge control means for controlling the discharge of the electric charge charged in the power storage means, a transformer winding that transforms the supplied current by the charge discharge of the power storage means under the control of the discharge control means, and a transformer winding for transforming the supply current by the charge discharge of the power storage means. a welding current transformer having a common iron core, a reverse excitation winding that is connected between the input power source and the charge control means, and is reverse excited in the excitation direction of the transformer winding when charging the power storage means; A short-circuiting means for short-circuiting the primary side of a transformer winding of the current transformer while the power storage means is being charged, and a welding means for performing welding using a welding current generated by current transformation of the transformer winding of the welding current transformer. An impact current welding machine featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP790788A JPH01186285A (en) | 1988-01-18 | 1988-01-18 | Impulse current welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP790788A JPH01186285A (en) | 1988-01-18 | 1988-01-18 | Impulse current welding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01186285A true JPH01186285A (en) | 1989-07-25 |
Family
ID=11678626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP790788A Pending JPH01186285A (en) | 1988-01-18 | 1988-01-18 | Impulse current welding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01186285A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0371985A (en) * | 1989-08-11 | 1991-03-27 | Origin Electric Co Ltd | Capacitor type spot welding machine |
| CN115066308A (en) * | 2020-02-06 | 2022-09-16 | 株式会社欧利生 | Bonding apparatus and method for manufacturing bonded member |
-
1988
- 1988-01-18 JP JP790788A patent/JPH01186285A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0371985A (en) * | 1989-08-11 | 1991-03-27 | Origin Electric Co Ltd | Capacitor type spot welding machine |
| CN115066308A (en) * | 2020-02-06 | 2022-09-16 | 株式会社欧利生 | Bonding apparatus and method for manufacturing bonded member |
| CN115066308B (en) * | 2020-02-06 | 2023-10-24 | 株式会社欧利生 | Bonding device and method for manufacturing bonded component |
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