JPH0367975A - Opening-closing device in circulating-water channel - Google Patents
Opening-closing device in circulating-water channelInfo
- Publication number
- JPH0367975A JPH0367975A JP20231289A JP20231289A JPH0367975A JP H0367975 A JPH0367975 A JP H0367975A JP 20231289 A JP20231289 A JP 20231289A JP 20231289 A JP20231289 A JP 20231289A JP H0367975 A JPH0367975 A JP H0367975A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- cooling water
- control valve
- water
- hot water
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000000498 cooling water Substances 0.000 claims abstract description 33
- 238000003466 welding Methods 0.000 claims description 44
- 238000001816 cooling Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000008674 spewing Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えばスポット溶接機に接続する冷却水循環
水路の開閉装置に関し、詳しくは、冷却水の使用量を節
約する開閉装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a switching device for a cooling water circulation channel connected to, for example, a spot welding machine, and more particularly to a switching device that saves the amount of cooling water used.
二枚又は三枚の鉄板を接合するのにスポット溶接機が用
いられている。スポ７）溶接機は、（１）
溶接しようとする複数枚の鉄板を、１対の溶接ガンによ
って高圧力で加圧し、短時間に大電流を流して鉄板を溶
かし接合するものであり、溶接作業を続行する間にスポ
ット溶接機が次第に発熱してくる。従って、スポット溶
接機の発熱部に冷却水を循環させて、スポット溶接機の
発熱を防止している。A spot welder is used to join two or three steel plates together. 7) A welding machine is a machine that (1) applies high pressure to multiple steel plates to be welded using a pair of welding guns, and flows a large current in a short period of time to melt and join the steel plates; As the work continues, the spot welding machine gradually generates heat. Therefore, cooling water is circulated through the heat generating part of the spot welding machine to prevent the spot welding machine from generating heat.
このスポット溶接機の冷却を行う従来例を第２図を参照
しながら説明する。A conventional example of cooling the spot welding machine will be explained with reference to FIG.
スポット溶接機（１）は、例えば、２枚の鉄板（２）（
２）を挟む一対の溶接ガン（３）（３）と、例えば一つ
の溶接ガン（３）に大電流を流し、かつ、高圧力を加圧
するためのトランス部（４）等を具備する。溶接ガン（
３）の先端部は交換可能な溶接電極（３ａ）を取り付け
る。そして発熱部である溶接電極（３ａ）、溶接ガン（
３）及びトランス部（４）の内部に循環水路（５）を形
威し、この循環水路（５〉に冷却水を流している。循環
水路（５）は、スポット溶接機（１）内に冷却水を送る
供給パイプ（２）
（６）と、冷却済みとなった温水をスポット溶接機（１
）から戻す返送パイプ（７）とから構成される。スポッ
ト溶接機（１）を多数台使用する工場内においては、冷
却機能を備えた貯水槽〔図示せず〕からの冷却水を流す
主供給管（８）と、温水を貯水槽へ戻す主返送管（９）
とを配管し、多数本の供給パイプ（６）と返送パイプ（
７）とをそれぞれ主供給管（８）と主返送管（９）とか
ら分岐しである。For example, the spot welding machine (1) can weld two iron plates (2) (
2) and a transformer section (4) for passing a large current through one welding gun (3) and applying high pressure, for example. Welding gun (
3) A replaceable welding electrode (3a) is attached to the tip. The welding electrode (3a), which is the heat generating part, and the welding gun (
A circulation waterway (5) is formed inside the transformer section (4) and the circulation waterway (5), and cooling water flows through the circulation waterway (5). The supply pipes (2) (6) that send the cooling water and the spot welding machine (1) that sends the cooled hot water
) and a return pipe (7). In a factory where many spot welding machines (1) are used, there is a main supply pipe (8) that carries cooling water from a water storage tank (not shown) with a cooling function, and a main return pipe that returns hot water to the water storage tank. pipe (9)
and multiple supply pipes (6) and return pipes (
7) are branched from the main supply pipe (8) and the main return pipe (9), respectively.
以上のような循環水路（５）をスポット溶接機（１）に
接続したことにより、スポット溶接機（１）の発熱を防
止することができる。即ち、冷却水が主供給管（８）か
ら供給パイプ（６）を継由して、スポット溶接機（１）
のトランス部（４〉及び溶接ガン（３）、溶接電極（３
ａ）を冷却する。冷却済みの温水は、スポット溶接機（
１）から返送パイプ（７）を継由して主返送管（９）へ
戻される。温水は、主返送管（９）から貯水槽〔図示せ
ず〕に帰還して、冷却された後、再び、冷却水となって
、主供給管（８）（３）
からスポット溶接機（１）へ循環される。このような冷
却水及び温水の循環はポンプ〔図示せず〕により行う。By connecting the circulation waterway (5) as described above to the spot welding machine (1), it is possible to prevent the spot welding machine (1) from generating heat. That is, cooling water is passed from the main supply pipe (8) through the supply pipe (6) to the spot welding machine (1).
transformer part (4), welding gun (3), welding electrode (3)
a) Cool down. The cooled hot water can be used with a spot welding machine (
1), is returned to the main return pipe (9) via the return pipe (7). The hot water returns to the water storage tank (not shown) from the main return pipe (9) and is cooled down, then becomes cooling water again and is passed from the main supply pipe (8) (3) to the spot welding machine (1). ). Such circulation of cooling water and hot water is performed by a pump (not shown).
尚、このようなスポット溶接機に循環水路を接続した冷
却装置が、実開昭５７−４９０８５号公報に開示されて
いる。Incidentally, a cooling device in which a circulation waterway is connected to such a spot welding machine is disclosed in Japanese Utility Model Application Publication No. 57-49085.
スポット溶接機（１）を多数台使用する工場においては
、工場が稼動している間は、全てのスポット溶接機（１
）に冷却水を通している。In a factory that uses a large number of spot welding machines (1), all spot welding machines (1) must be
) is passing cooling water through it.
しかし、全てのスポット溶接機（１）が同時に使用され
るわけではないので、使用していない停止中のスポット
溶接機（１）に冷却水を通ずことは無駄である。また、
全てのスポット溶接機（１〉に冷却水を通すには、大き
なポンプが必要であるが、使用するスポット溶接機（１
）の台数に応し、小さめのポンプを使用する方が燃料の
節約を図ることができる。However, since not all spot welders (1) are used at the same time, it is wasteful to flow cooling water to spot welders (1) that are not in use and are stopped. Also,
A large pump is required to pass cooling water through all spot welding machines (1), but the spot welding machine (1) used
) Depending on the number of pumps, it is possible to save fuel by using a smaller pump.
そこで、本発明は、使用していない停止中のスポット溶
接機には、冷却水を通さないように（４）
した循環水路の開閉装置を提供することを目的とする。Therefore, an object of the present invention is to provide a circulation waterway opening/closing device that prevents (4) cooling water from passing through a spot welding machine that is not in use and is stopped.
本発明は上記目的を遠戚するため、溶接機に接続した供
給パイプ及び返送パイプにより、冷却水と冷却済みの温
水とを循環させる循環水路の開閉装置であって、温水の
温度を検出する温度センサと、循環水路中に配置した制
御弁と、前記温水の温度が設定温度になったとき、制御
弁を閉しる制御装置とを具備したものである。In order to achieve the above object, the present invention provides an opening/closing device for a circulation waterway that circulates cooling water and cooled hot water through a supply pipe and a return pipe connected to a welding machine, and which detects the temperature of the hot water. It is equipped with a sensor, a control valve disposed in a circulation waterway, and a control device that closes the control valve when the temperature of the hot water reaches a set temperature.
溶接機が稼動している間は、溶接機が発熱するため、冷
却済みの温水の温度が上昇する。溶接機が停止すると４
、温水の温度が下がる。そこで、温水の温度を温度セン
サで検知して、温水の温度が設定温度になったことを認
識すると、循環水路中に配置した制御弁を閉し、冷却水
が溶接機を通らないようにする。While the welding machine is operating, the welding machine generates heat, which increases the temperature of the cooled hot water. When the welding machine stops, 4
, the temperature of the hot water decreases. Therefore, the temperature of the hot water is detected by a temperature sensor, and when it is recognized that the temperature of the hot water has reached the set temperature, the control valve placed in the circulation channel is closed to prevent the cooling water from passing through the welding machine. .
本発明に係る一実施例を第１図を参照しなか（５）
ら説明する。但し、従来と同一部品は同一符号を附して
、その説明は省略する。An embodiment of the present invention will be described from (5) with reference to FIG. However, parts that are the same as those in the prior art are given the same reference numerals, and their explanations will be omitted.
供給パイプ（６）と返送パイプ（７）の通路には、それ
ぞれ、連動する常開の第１の制御弁（１０）と第２の制
御弁（１１）とを接続し、第１の制御弁（１０）を閉じ
たときに供給パイプ（６）内に冷却水が流入しないよう
にし、また、第２の制御弁（１１）を閉じたときに、溶
接電極（３ａ）を交換する際、返送パイプ（７）から温
水が噴出しないようにする。さらに、供給パイプ（６）
と返送パイプ（７）とには、それぞれ、第１の温度セン
サ（１２〉と第２の温度センサ（１３）とを接続し、冷
却水と温水との温度を測定する。A normally open first control valve (10) and a second control valve (11) are connected to the passages of the supply pipe (6) and the return pipe (7), respectively. (10) to prevent cooling water from flowing into the supply pipe (6), and to prevent cooling water from flowing into the supply pipe (6) when the second control valve (11) is closed. Prevent hot water from gushing out from the pipe (7). Furthermore, the supply pipe (6)
A first temperature sensor (12>) and a second temperature sensor (13) are connected to the return pipe (7) and the return pipe (7), respectively, to measure the temperatures of the cooling water and hot water.
この両温度センサ（１２） （１３）によって測定さ
れた温度は、制御装置（１４）によって比較演算し、設
定温度になったことを認識すると、上記第１、第２の制
御弁（１０） （１１）を連動して閉しるようにする
。設定温度は、スポット溶接機（１〉が停止して、温水
の温度が下がり、冷却水の温度と温水の温度との温度差
が小さくなっ（６）
た温度を設定したものである。The temperatures measured by both temperature sensors (12) (13) are compared and calculated by the control device (14), and when it is recognized that the set temperature has been reached, the first and second control valves (10) ( 11) so that they are closed in conjunction with each other. The set temperature is the temperature at which the spot welding machine (1) stops, the temperature of the hot water drops, and the temperature difference between the temperature of the cooling water and the temperature of the hot water becomes small (6).
本考案に係る開閉装置は以上のように構成され、次にそ
の動作について説明する。The opening/closing device according to the present invention is constructed as described above, and its operation will be explained next.
スポット溶接機（１）を稼動している間は、第１、第２
の制御弁（１０） （１１）は開いており、冷却水が
主供給管（８）から供給パイプ（６）を通って、スポッ
ト溶接機（１）を冷却する。While the spot welding machine (1) is operating, the first and second
The control valves (10) (11) are open and cooling water passes from the main supply pipe (8) through the supply pipe (6) to cool the spot welding machine (1).
冷却済み温水は、返送パイプ（７）から主返送管〈９）
へ戻される。スポット溶接機（１）を停止すると、予熱
によって、温水は暫くの間高温であるが、次第に温度が
下ってくる。冷却水の温度と温水の温度とは、第（と第
２の温度センサ（１２） （１３）によって検知して
おり、温度差が設定温度になったことを制御装置（１４
）が認識すると、スポット溶接機（１）が十分に冷却さ
れた状態であり、制御語ｆｉ！ （１４）によって、第
１、第２の制御弁（１０） （１１）を連動して閉じ
る。すると、冷却水が主供給管（８）から供給パイプ（
６）へ流れなくなり、冷却水の節約を図ることができる
。また、第２の制御弁〈７）
（１１）を閉しることにより、スポット溶接機（１）が
停止中に、返送パイプ（７）から温水が噴出することな
く、溶接電極（３ａ）を交換することができる。The cooled hot water is transferred from the return pipe (7) to the main return pipe (9).
be returned to. When the spot welding machine (1) is stopped, the hot water remains at a high temperature for a while due to preheating, but the temperature gradually decreases. The temperature of the cooling water and the temperature of the hot water are detected by the second temperature sensor (12) (13), and when the temperature difference reaches the set temperature, the control device (14) detects the temperature of the cooling water and the temperature of the hot water.
) recognizes that the spot welding machine (1) is sufficiently cooled and the control word fi! (14), the first and second control valves (10) and (11) are closed in conjunction. Then, the cooling water flows from the main supply pipe (8) to the supply pipe (
6), and the cooling water can be saved. In addition, by closing the second control valve (7) (11), the welding electrode (3a) can be operated without hot water spewing out from the return pipe (7) while the spot welding machine (1) is stopped. Can be exchanged.
スポット溶接機（１）を再び稼動させるときは、制御装
置（１４）によって、第１、第２の制御弁（１０）
（１１）を開き、上記動作を繰返す。When restarting the spot welding machine (1), the first and second control valves (10) are controlled by the control device (14).
Open (11) and repeat the above operation.
以上は本考案に係る一実施例を説明したもので、本考案
はこの実施例に限定することなく本考案の要旨内におい
て設計変更することができる。The above describes one embodiment of the present invention, and the present invention is not limited to this embodiment, and the design can be changed within the gist of the present invention.
例えば、上述した温度センサは、供給パイプと返送パイ
プとに接続し、冷却水と温水との温度差を検知すること
により、水温の季節変動に影響されることなく制御弁を
閉じるようにしているが、水温の季節変動を考慮する必
要がないときは、温度センサを返送パイプにのみ接続し
、温水の温度変化のみ検知し、温水の温度が下ったとき
に、制御弁を閉じるようにしてもよい。また、溶接電極
の交換を考慮しなくてよいと（８）
きは、制御弁は返送パイプにのみ接続してもよい。さら
に、返還パイプに接続する制御弁は逆止弁に代えること
もできる。For example, the above-mentioned temperature sensor is connected to a supply pipe and a return pipe, and by detecting the temperature difference between cooling water and hot water, the control valve is closed without being affected by seasonal fluctuations in water temperature. However, if you do not need to take seasonal fluctuations in water temperature into account, you can connect the temperature sensor only to the return pipe, detect only changes in the temperature of the hot water, and close the control valve when the temperature of the hot water drops. good. In addition, if there is no need to consider replacing the welding electrode (8), the control valve may be connected only to the return pipe. Furthermore, the control valve connected to the return pipe can be replaced with a check valve.
本発明によれば、循環水路の開閉を自動的に行うことが
できるため、冷却水の節約を図り、また、冷却水の循環
のためのポンプに小型のものを使用することができ、省
力化が可能となる。According to the present invention, since the circulation waterway can be opened and closed automatically, cooling water can be saved, and a small pump can be used for circulating the cooling water, which saves labor. becomes possible.
第１図は本発明に係る開閉装置を循環水路に接続したと
きの概略図、第２図は従来の循環水路の概略図である。
（１）−・−スポット溶接機、（５）−循環水路、（６
）〜・−供給パイプ、 （’ｌ ）−返送パイプ、
（ｌＯ）−・−第１の制御弁、 （１１） −第２の
制御弁、（１２）−・−第１の温度センサ、
（１３） −第２の温度センサ、
（１４）−制御装置。
特 許 出 願 人 ダイハツ工業株式会社代
理 人 江 原 省 吾（９
）FIG. 1 is a schematic diagram of a switching device according to the present invention connected to a circulation waterway, and FIG. 2 is a schematic diagram of a conventional circulation waterway. (1)--Spot welding machine, (5)-Circulation waterway, (6
)～・-supply pipe, ('l)-return pipe,
(lO)--First control valve, (11)-Second control valve, (12)--First temperature sensor, (13)-Second temperature sensor, (14)-Control device . Patent applicant: Daihatsu Motor Co., Ltd.
Shogo Ebara (9)
)
Claims (1)
り、冷却水と冷却済みの温水とを循環させる循環水路の
開閉装置であって、 温水の温度を検出する温度センサと、循環水路中に配置
した制御弁と、前記温水の温度が設定温度になったとき
、制御弁を閉じる制御装置とを具備したことを特徴とす
る循環水路の開閉装置。(1) An opening/closing device for a circulation waterway that circulates cooling water and cooled hot water through a supply pipe and a return pipe connected to a welding machine, including a temperature sensor that detects the temperature of the hot water and a temperature sensor placed in the circulation waterway. 1. An opening/closing device for a circulation waterway, comprising: a control valve that has a temperature of the hot water; and a control device that closes the control valve when the temperature of the hot water reaches a set temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20231289A JPH0367975A (en) | 1989-08-03 | 1989-08-03 | Opening-closing device in circulating-water channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20231289A JPH0367975A (en) | 1989-08-03 | 1989-08-03 | Opening-closing device in circulating-water channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0367975A true JPH0367975A (en) | 1991-03-22 |
Family
ID=16455463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20231289A Pending JPH0367975A (en) | 1989-08-03 | 1989-08-03 | Opening-closing device in circulating-water channel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0367975A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2244358A1 (en) * | 2005-05-16 | 2005-12-01 | Josep Roura Alemany | Water saving installation has user-actuated control which enables water from hot water circuit to flow into cold water circuit through compensation point, and temperature sensitive unit to determine time for which circuits are connected |
| JP2014062676A (en) * | 2012-09-21 | 2014-04-10 | Yachiyo Industry Co Ltd | Fluid circulation system in factory |
-
1989
- 1989-08-03 JP JP20231289A patent/JPH0367975A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2244358A1 (en) * | 2005-05-16 | 2005-12-01 | Josep Roura Alemany | Water saving installation has user-actuated control which enables water from hot water circuit to flow into cold water circuit through compensation point, and temperature sensitive unit to determine time for which circuits are connected |
| JP2014062676A (en) * | 2012-09-21 | 2014-04-10 | Yachiyo Industry Co Ltd | Fluid circulation system in factory |
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