JPH0747221B2 - Bolt supply welding method - Google Patents
Bolt supply welding methodInfo
- Publication number
- JPH0747221B2 JPH0747221B2 JP2331112A JP33111290A JPH0747221B2 JP H0747221 B2 JPH0747221 B2 JP H0747221B2 JP 2331112 A JP2331112 A JP 2331112A JP 33111290 A JP33111290 A JP 33111290A JP H0747221 B2 JPH0747221 B2 JP H0747221B2
- Authority
- JP
- Japan
- Prior art keywords
- bolt
- work
- welding
- supply
- lower electrode
- 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.)
- Expired - Lifetime
Links
- 238000003466 welding Methods 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 5
- 238000003780 insertion Methods 0.000 claims description 9
- 230000037431 insertion Effects 0.000 claims description 9
- 230000005484 gravity Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Landscapes
- Branching, Merging, And Special Transfer Between Conveyors (AREA)
Description
本発明は、スポット溶接タイプのボルトの供給溶接方法
に関するものである。The present invention relates to a spot welding type bolt supply welding method.
従来よりこの種の装置はナットに関するものが多く提案
されているがボルト用のものは少ない。従来はワーク
(被溶接材)へボルトを溶接するには、ワークに設けら
れた穴へ上部電極の下面でボルトを押し込むタイプのも
のが使用されており例えば、実開昭56−55580号,実開
昭57−17389号,実開昭58−75651号、上部電極の偏摩耗
によりボルトが斜に入り傾いたままで溶接される不具合
が生じていた。また、ワークの位置決めが困難で穴へ正
確にボルトが入らない欠点も有していた。Conventionally, many devices of this type have been proposed for nuts, but few for bolts. Conventionally, in order to weld a bolt to a workpiece (workpiece to be welded), a type in which the bolt is pushed into the hole provided in the workpiece with the lower surface of the upper electrode is used. For example, Japanese Utility Model Laid-Open No. 56-55580, No. 57-17389, No. 58-75651, Actually, due to uneven wear of the upper electrode, there was a problem that the bolt was obliquely welded while tilted. Further, there is a drawback that the positioning of the work is difficult and the bolt cannot be accurately inserted into the hole.
【課題を解決するための手段】 本発明は上記のような難点を解決したものであって、固
定状態の下部電極(1)と前記下部電極方向へ上下動可
能な上部電極(2)との間でワーク(12)に対してボル
トを供給しながら溶接するに際して、ワークの位置決め
を駆動手段により昇降するガイドロッド(6)で行なっ
た後、該ガイドロッドを降下させてワークのボルト溶接
穴の下方へボルト(13)先端の挿入穴を確保した後、供
給ホッパーから供給を受けたボルトを供給ヘッド(4)
のボルト受(11)へ遊挿かつ僅かに浮かせて保持した状
態となるようワーク上面へボルト(13)先端を接触滑走
させ、前記ワークのボルト溶接穴及びその下方のボルト
挿入穴へボルト先端を自然落下により挿入させた後、ボ
ルト供給ヘッド(4)を後退させ、上部電極(2)を下
降させて溶接することを特徴とするボルトの供給溶接方
法である。Means for Solving the Problems The present invention has solved the above-mentioned problems, and comprises a lower electrode (1) in a fixed state and an upper electrode (2) movable up and down in the direction of the lower electrode. During welding while supplying a bolt to the work (12) between them, the work is positioned by the guide rod (6) which is moved up and down by the drive means, and then the guide rod is lowered to form the bolt welding hole of the work. After securing the insertion hole at the tip of the bolt (13) downward, supply the bolt supplied from the supply hopper to the supply head (4).
The tip of the bolt (13) slides in contact with the upper surface of the work so that it is loosely inserted in the bolt receiver (11) and held slightly, and the bolt tip is inserted into the bolt welding hole of the work and the bolt insertion hole below it. A bolt supply welding method is characterized in that the bolt supply head (4) is retracted and the upper electrode (2) is lowered to perform welding after the bolt is inserted by natural dropping.
以下図面によって本発明の実施例を詳細に説明する。 第1図は本発明を実施可能なボルト供給溶接機のボルト
供給シリンダ部分の側面図であり、第2図は同エアチャ
ック部分の拡大斜視図、第3図は下部電極部分の側面図
である。第4図は各部材の動きを示すフローチャートで
ある。 本装置は垂直に配設されたスポット溶接機の固定状態の
下部電極(1)と上下に可動な上部電極(2)と、前記
下部電極(1)の斜め上方に配設されているボルト供給
用ガイド端(3)と、そのガイド端(3)と前記下部電
極(1)間を斜めに往復動するボルト供給ヘッド(4)
とからなるものである。固定状態の下部電極には最上部
にボルト穴(5)が設けられており、また、そのボルト
穴(5)からワーク位置決め用ガイドロッド(6)が突
出しており、このガイドロッド(6)は下部のシリンダ
(7)により上下動可能とされている。ワーク位置決め
はガイドロッド(6)が下部電極上へ突出してワーク
(12)のボルト溶接穴へ嵌まることによりなされる。ワ
ーク(12)のボルト溶接位置決めがなされると、ボルト
供給ヘッド(4)によりボルトが供給される。そして、
上部電極が下降してワークへボルトのスポット溶接がな
される。 ボルト供給ヘッド(4)は、後部のシリンダ本体(8)
から延長したシリンダロッド(9)の先端にエアチャッ
ク(10)とそのエアチャックにより左右へ開閉する2つ
割りのボルト受(11)を設けた構造であり、ボルトは供
給ホッパーに多数本収納されているものが送給用ホース
で送られてきて、閉じた状態のボルト受(11)によって
一個宛自由状態で受けて支持される。そして、シリンダ
本体への加圧により第1図中2点鎖線のようにワーク
(12)上へボルト受(11)がきて、次にエアチャック
(10)が加圧されることによりボルト受(11)が左右に
開いてボルト(13)をワークのボルト穴へ自由落下状態
で嵌めるのである。 以上のようなボルト供給溶接機の動作は第4図に示すフ
ローチャートの順序で行なわれ、これによって極めて良
好な溶接作業が実施できる。まず、下部電極(1)上へ
はガイドロッド(6)が突出した状態でワークのボルト
挿入穴を突出ロッドへはめてワークの位置決めをする。
下部電極(1)上の突出したガイドロッド(6)の位置
へは、ボルト入りの供給ヘッド(4)が斜め上方から前
進してその直上へ来るのであるが、その際、ボルト挿入
穴(5)手前のワーク上面にボルト先端部が接触滑走し
てボルト(13)がエアチャックのボルト受(11)から僅
かに浮き上った状態でボルト挿入穴(5)に接近する。
この間に前記の突出したガイドロッド(6)が下降し、
ボルト挿入穴(5)にボルトの浮き上った分だけボルト
先端部がはまり込むのである。ここで、エアチャック
(10)のボルト受(11)が開いてボルト受(11)からボ
ルト(13)が自由落下によりボルト穴(5)へ完全に挿
入され、供給ヘッド(4)が僅かに後退した時点で上部
電極(2)が下降し、ボルトがワークへ溶接されるので
ある。このガイドロッドの下降からボルト挿入までは極
めて短時間に行なわれ、ワークが移動する間なしにワー
クへのボルト挿入が完了するから、確実なボルト溶接が
できる。 上部電極(2)が上昇する間に供給ヘッド(4)も戻
り、ボルトが供給ヘッドへ供給され、ボルト受(11)内
へ入る。同時に下部電極のガイドロッド(6)が上昇し
て、溶接されたボルトを下方から持ち上げ、ワークを下
部電極から浮上させるので、ワークの取外しが簡単であ
る。Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view of a bolt supply cylinder portion of a bolt supply welder capable of implementing the present invention, FIG. 2 is an enlarged perspective view of the air chuck portion, and FIG. 3 is a side view of a lower electrode portion. . FIG. 4 is a flow chart showing the movement of each member. This apparatus comprises a vertically arranged lower electrode (1) of a spot welding machine, an upper electrode (2) which is vertically movable, and a bolt supply which is arranged diagonally above the lower electrode (1). Guide end (3) and a bolt supply head (4) that obliquely reciprocates between the guide end (3) and the lower electrode (1).
It consists of and. A bolt hole (5) is provided in the uppermost part of the fixed lower electrode, and a work positioning guide rod (6) projects from the bolt hole (5). This guide rod (6) It can be moved up and down by a lower cylinder (7). Work positioning is performed by the guide rod (6) protruding above the lower electrode and fitting into the bolt welding hole of the work (12). When the workpiece (12) is positioned by bolt welding, the bolt is supplied by the bolt supply head (4). And
The upper electrode descends and spot welding of bolts is performed on the work. The bolt supply head (4) is the rear cylinder body (8)
It has a structure in which an air chuck (10) and a split bolt receiver (11) that opens and closes to the left and right by the air chuck are provided at the tip of a cylinder rod (9) extended from Is sent by a feeding hose, and is received and supported in a free state by one bolt receiver (11) in a closed state. When the cylinder main body is pressed, the bolt receiver (11) comes onto the work (12) as shown by the chain double-dashed line in FIG. 1, and then the air chuck (10) is pressurized, so that the bolt receiver ( 11) opens to the left and right, and the bolt (13) is fitted into the bolt hole of the work piece in a free fall state. The operation of the bolt supply welding machine as described above is performed in the order of the flow chart shown in FIG. 4, whereby extremely good welding work can be carried out. First, with the guide rod (6) protruding above the lower electrode (1), the bolt insertion hole of the work is fitted into the protruding rod to position the work.
To the position of the protruding guide rod (6) on the lower electrode (1), the supply head (4) containing a bolt advances diagonally from above and comes to the position just above it. ) The bolt tip comes into contact with the upper surface of the work in front of the workpiece, and the bolt (13) approaches the bolt insertion hole (5) with the bolt (13) slightly floating from the bolt holder (11) of the air chuck.
During this period, the protruding guide rod (6) descends,
The tip of the bolt fits into the bolt insertion hole (5) as much as the bolt floats. Here, the bolt receiver (11) of the air chuck (10) is opened, and the bolt (13) is completely inserted into the bolt hole (5) by free fall from the bolt receiver (11), and the supply head (4) is slightly When retracted, the upper electrode (2) descends and the bolt is welded to the work. Since the guide rod is lowered to the bolt insertion in an extremely short time, and the bolt insertion into the work is completed without moving the work, reliable bolt welding can be performed. While the upper electrode (2) rises, the supply head (4) also returns and the bolt is supplied to the supply head and enters the bolt receiver (11). At the same time, the guide rod (6) of the lower electrode rises, lifts the welded bolt from below, and lifts the work from the lower electrode, so that the work can be easily removed.
本発明のボルトの供給溶接方法は上記の構造と動作、特
にガイドロッドの動きとボルトの自然落下による挿入動
作によりワークのボルト溶接位置決めが確実となり、ボ
ルトの嵌込みも正確かつ容易となったのである。その結
果、本発明によってボルト供給と溶接の自動化が達成さ
れ、作業能率が向上し、かつ、製品不良率の低減効果が
得られたのである。Since the bolt supply welding method of the present invention ensures the bolt welding positioning of the work by the structure and operation described above, particularly the inserting operation by the movement of the guide rod and the natural drop of the bolt, and the fitting of the bolt is also accurate and easy. is there. As a result, according to the present invention, automation of bolt supply and welding was achieved, work efficiency was improved, and a product defect rate reduction effect was obtained.
第1図は本発明を実施可能なボルトの供給溶接機のボル
ト供給シリンダ部分の側面図であり、第2図は同エアチ
ャック部分の拡大斜視図、第3図は下部電極部分の側面
図である。第4図は各部材の動きを示すフローチャート
である。 (1)……下部電極、(2)……上部電極 (3)……ボルト供給用ガイド端 (4)……ボルト供給ヘッド (5)……ボルト穴、(6)……ガイドロッド (7)……下部シリンダ、(8)……シリンダ本体 (9)……シリンダロッド、(10)……エアチャック (11)……ボルト受、(12)……ワーク (13)……ボルトFIG. 1 is a side view of a bolt supply cylinder portion of a bolt supply welder capable of implementing the present invention, FIG. 2 is an enlarged perspective view of the air chuck portion, and FIG. 3 is a side view of a lower electrode portion. is there. FIG. 4 is a flow chart showing the movement of each member. (1) ...... Lower electrode, (2) ...... Upper electrode (3) ...... Bolt supply guide end (4) ...... Bolt supply head (5) ...... Bolt hole, (6) ...... Guide rod (7) ) …… Lower cylinder, (8) …… Cylinder body (9) …… Cylinder rod, (10) …… Air chuck (11) …… Bolt receiver, (12) …… Workpiece (13) …… Bolt
Claims (1)
方向へ上下動可能な上部電極(2)との間でワーク(1
2)に対してボルトを供給しながら溶接するに際して、
ワークの位置決めを駆動手段により昇降するガイドロッ
ド(6)で行なった後、該ガイドロッドを降下させてワ
ークのボルト溶接穴の下方へボルト(13)先端の挿入穴
を確保した後、供給ホッパーから供給を受けたボルトを
供給ヘッド(4)のボルト受(11)へ遊挿かつ僅かに浮
かせて保持した状態となるようワーク上面へボルト(1
3)先端を接触滑走させ、前記ワークのボルト溶接穴及
びその下方のボルト挿入穴へボルト先端を自然落下によ
り挿入させた後、ボルト供給ヘッド(4)を後退させ、
上部電極(2)を下降させて溶接することを特徴とする
ボルトの供給溶接方法。1. A work (1) between a fixed lower electrode (1) and an upper electrode (2) movable up and down in the direction of the lower electrode.
When welding while supplying bolts to 2),
After the work is positioned by the guide rod (6) that moves up and down by the driving means, the guide rod is lowered to secure the insertion hole at the tip of the bolt (13) below the bolt welding hole of the work, and then from the supply hopper. The bolt (1) is loosely inserted into the bolt receiver (11) of the supply head (4) and slightly lifted (1)
3) Sliding the tip into contact, inserting the tip of the bolt into the bolt welding hole of the work and the bolt insertion hole below it by gravity, and then retracting the bolt supply head (4),
A method for supplying and welding a bolt, characterized by lowering and welding the upper electrode (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2331112A JPH0747221B2 (en) | 1990-11-28 | 1990-11-28 | Bolt supply welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2331112A JPH0747221B2 (en) | 1990-11-28 | 1990-11-28 | Bolt supply welding method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03180281A JPH03180281A (en) | 1991-08-06 |
| JPH0747221B2 true JPH0747221B2 (en) | 1995-05-24 |
Family
ID=18239995
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2331112A Expired - Lifetime JPH0747221B2 (en) | 1990-11-28 | 1990-11-28 | Bolt supply welding method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0747221B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595516Y2 (en) * | 1979-09-29 | 1984-02-18 | 株式会社 電元社製作所 | Bolt feeding device in projection welding machine |
| JPS6054832B2 (en) * | 1980-07-02 | 1985-12-02 | 株式会社電元社製作所 | Welding bolt supply method and device |
| JPS5875651U (en) * | 1981-11-13 | 1983-05-21 | 三洋電機株式会社 | parts transfer device |
-
1990
- 1990-11-28 JP JP2331112A patent/JPH0747221B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03180281A (en) | 1991-08-06 |
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