JPH02299148A - Automatic size checking method for filament coil - Google Patents
Automatic size checking method for filament coilInfo
- Publication number
- JPH02299148A JPH02299148A JP12083289A JP12083289A JPH02299148A JP H02299148 A JPH02299148 A JP H02299148A JP 12083289 A JP12083289 A JP 12083289A JP 12083289 A JP12083289 A JP 12083289A JP H02299148 A JPH02299148 A JP H02299148A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- filament
- jig
- filament coil
- section
- 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
Links
- 238000000034 method Methods 0.000 title claims description 13
- 238000007689 inspection Methods 0.000 claims description 11
- 238000007667 floating Methods 0.000 abstract description 11
- 230000002950 deficient Effects 0.000 description 5
- 238000011179 visual inspection Methods 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- A Measuring Device Byusing Mechanical Method (AREA)
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明はフィラメントコイルの寸法、特にその足部の成
形状態の良否を自動的に検査する方法に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for automatically inspecting the dimensions of a filament coil, particularly the molding condition of its legs.
従来の技術
電球等のフィラメントコイルとして、コイル部と、その
両端から互いに反対方向へ延びて形成され、コイル軸に
平行に設けられた両足部とを有するものが多用されてい
る。BACKGROUND OF THE INVENTION Filament coils for light bulbs and the like are often used that have a coil section and two legs extending from both ends of the coil section in opposite directions and parallel to the coil axis.
従来は、このような形状を有するフィラメントコイルを
次のような方法で得ている。すなわち、まず、コイル巻
線機により、タングステン線材を芯線に巻き付けて、コ
イル部を作り、所定の長さに切断して、コイル部に連続
した両足部を形成する。次に、このようにして得られた
フィラメントコイルを加熱炉内または通電加熱方式で成
形し、第3図(A)、(B)に示すようなフィラメント
コイル1を得ている。第3図(A)、(B)中、1aは
フィラメントコイル1のコイル部を、1bは同じ(足部
をそれぞれ示している。Conventionally, a filament coil having such a shape has been obtained by the following method. That is, first, a tungsten wire is wound around a core wire using a coil winding machine to form a coil portion, and the coil portion is cut to a predetermined length to form both legs continuous to the coil portion. Next, the filament coil thus obtained is molded in a heating furnace or by an electric heating method to obtain a filament coil 1 as shown in FIGS. 3(A) and 3(B). In FIGS. 3(A) and 3(B), 1a indicates the coil portion of the filament coil 1, and 1b indicates the same leg portion (respectively).
最後に、成形されたフィラメントコイル1について、外
観、形状(曲がり)、足浮きの状態の良否等の品質検査
を目視で行ったり、ゲージを使用したりして、良品を選
別していた。Finally, the molded filament coils 1 are inspected for quality, such as appearance, shape (bending), and quality of foot lifting, by visual inspection or by using a gauge to select non-defective products.
発明が解決しようとする課題
しかしながら、このようなフィラメントコイルの品質検
査では、人間による目視や、ゲージによるものであるた
めに、特に、足浮きの状態の良否を判定することが難し
かった。この足浮き状態とは第3図(A)、(B)に一
点鎖線で示すような場合をいい、足部高さり、、h2が
所定値以下ならば、許容される。もし、足浮き状態の足
部を有する規格外のフィラメントコイルを選別できずに
ランプに組み込んだ場合には、コイル部1bに曲がりが
発生し、その結果所望するランプ特性が得られないとい
う不具合があった。Problems to be Solved by the Invention However, since quality inspection of such filament coils involves visual inspection by a human or a gauge, it is particularly difficult to judge whether the condition of the leg is good or bad. This foot floating state refers to the case shown by the dashed line in FIGS. 3(A) and 3(B), and is allowed if the foot height, h2, is less than a predetermined value. If a non-standard filament coil with a leg part that is floating is incorporated into a lamp without being sorted out, the coil part 1b will be bent, and as a result, the desired lamp characteristics may not be obtained. there were.
本発明は品質の安定したフィラメントコイルを自動的に
選別することのできるフィラメントコイルの寸法自動検
査方法を提供するものである。The present invention provides an automatic filament coil dimension inspection method that can automatically select filament coils of stable quality.
課題を解決するための手段
本発明のフィラメントコイルの寸法自動検査方法は、コ
イル部とこのコイル部の両端から互いに反対方向へ延び
て形成され、コイル軸に沿って設けられた両足部とを有
するフィラメントコイルを連続して一方向に移動させる
治具と、前記フィラメントコイルの移動経路中に設置し
た回転ゲージとを備え、前記治具は前記コイル部を収容
するための半円形の溝と、前記フィラメントコイルの両
足部を位置決めし、かつ前記足部の高さの許容限界の高
さで前記溝に隣接して設けた段差部とを有しており、さ
らに前記回転ゲージを前記段差部の許容限界の高さ位置
にこの段差部に臨んで設けた構成を有している。Means for Solving the Problems The automatic filament coil dimension inspection method of the present invention includes a coil portion and both leg portions extending in opposite directions from both ends of the coil portion and provided along the coil axis. The jig includes a jig for continuously moving the filament coil in one direction, and a rotation gauge installed in the moving path of the filament coil, and the jig has a semicircular groove for accommodating the coil portion; The filament coil has a stepped portion adjacent to the groove for positioning both feet of the filament coil at a height that is within the allowable height of the foot portion, and further includes a step portion provided adjacent to the groove at a height that is within the permissible limit of the height of the foot portion. It has a configuration in which it is provided facing this stepped portion at the limit height position.
作用
かかる構成によると、フィラメントコイルが良品の場合
、つまりその足部が足浮き状態になっていないか、また
は、なっていても足部高さが許容範囲内にあれば、回転
ゲージは足部に当たらないので、治具上を移動するフィ
ラメントコイルは回転ゲージを通過する。一方、フィラ
メントコイルが不良品の場合、つまりその足部が足浮き
状態にあり、足部高さが許容範囲外にあると、回転ゲー
ジが足部に当たり、回転ゲージを通過することができず
、治具上から撮り落とされる。According to this configuration, if the filament coil is in good condition, that is, if its foot is not in a floating state, or even if it is, but the foot height is within the allowable range, the rotation gauge will detect the foot. The filament coil moving on the jig passes through the rotation gauge. On the other hand, if the filament coil is defective, that is, if its foot is floating and the height of the foot is outside the allowable range, the rotation gauge will hit the foot and it will not be able to pass through the rotation gauge. Photographed from above the jig.
実施例
以下、本発明の一実施例について図面を用いて説明する
。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.
第1図において、フィラメントコイル1はパーツフィー
ダ2にて治具3に次々と送られる。治具3はフィラメン
トコイル1のコイル部1aの外径に合致させた半円形の
溝3aを有しており、さらにフィラメントコイル1の足
部1bを位置決めし、かつ足部高さhl、h2の許容限
界の高さで溝3aに隣接して設けた段差部3bとを有し
ている。治具3は足部1bの方向を一定にするために、
15°〜20°の傾斜角度をもって、固定されている。In FIG. 1, filament coils 1 are successively fed to a jig 3 by a parts feeder 2. The jig 3 has a semicircular groove 3a that matches the outer diameter of the coil portion 1a of the filament coil 1, and further positions the foot portion 1b of the filament coil 1 and adjusts the foot heights hl and h2. It has a stepped portion 3b provided adjacent to the groove 3a at an allowable height. In order to keep the direction of the foot portion 1b constant, the jig 3 is
It is fixed with an inclination angle of 15° to 20°.
そして、所定の間隔で切り欠きを有する円盤状の回転ゲ
ージ4が段差部3bの許容限界の高さくH)位置にこの
段差部にiんで設置されている(第2図参照)。回転ゲ
ージ4は軸5を介してモータ6に連結されており、矢印
方向に回転する。A disk-shaped rotation gauge 4 having notches at predetermined intervals is installed in the stepped portion 3b at a height H) that is the permissible limit of the stepped portion (see FIG. 2). The rotation gauge 4 is connected to a motor 6 via a shaft 5, and rotates in the direction of the arrow.
治具3の側部下方には、良品のフィラメントコイル1を
箱7内に収容するためのシュート8が設置されている。A chute 8 for accommodating good filament coils 1 in a box 7 is installed below the side of the jig 3.
いま、フィラメントコイル1をパーツフィーダ2にて治
具3に移送する。そして、移送されたフィラメントコイ
ル1は治具3の微振動により一方向に移動する。ここで
、フィラメントコイル1が良品の場合、つまり足部1b
が足浮き状態になっていないか、または、なっていても
足部高さht、 h2が所定の範囲内にあれば、第2図
にその足部を実線で示すように、回転ゲージ4は足部1
bに当たらないので、フィラメントコイル1は回転ゲー
ジ4を通過し、シュート8を通して箱7内に収容される
。一方、フィラメントコイル1が不良品の場合、つまり
足部1bが足浮き状態にあり、その足部高さhI、h2
が範囲外にあると、第2図にその足部を一点鎖線で示す
ように、回転ゲージ4が一方の足部1bの先端P+か、
または他方の足部の折曲部P2に当たり、このためこの
フィラメントコイルは治具3から撮り落とされることと
なる。Now, the filament coil 1 is transferred to the jig 3 by the parts feeder 2. Then, the transferred filament coil 1 is moved in one direction by the slight vibration of the jig 3. Here, if the filament coil 1 is good, that is, the foot part 1b
If the feet are not in a floating state, or even if they are, if the foot heights ht and h2 are within the predetermined range, the rotation gauge 4 will be adjusted as shown by the solid line in Fig. 2. Foot part 1
b, the filament coil 1 passes through the rotation gauge 4 and is housed in the box 7 through the chute 8. On the other hand, if the filament coil 1 is defective, that is, the foot portion 1b is in a floating state, and the foot heights hI, h2
is out of range, as shown in FIG. 2 by the dashed line, the rotation gauge 4 indicates whether the tip of one leg 1b is P+ or
Alternatively, the filament coil hits the bent portion P2 of the other leg, and therefore, this filament coil is dropped from the jig 3.
以上のように、本発明実施例の方法によれば、フィラメ
ントコイル1の足部1bの足浮き状態の良否を自動的に
検査することができるので、良品の選別の精度を高める
ことができる。As described above, according to the method of the embodiment of the present invention, it is possible to automatically inspect whether the foot portion 1b of the filament coil 1 is in a floating state, thereby increasing the accuracy of selecting non-defective products.
次に、本発明の効果を確認した実験例について説明する
。Next, an experimental example in which the effects of the present invention were confirmed will be described.
従来の目視およびゲージによる寸法検査方法と、本発明
の寸法検査方法で、第3図(A)、、(B)に示すよう
な構成のフィラメントコイルを各1000個良品8判定
して選別し、これら2000個につき測定器を用いて各
々の足部高さを測定したところ、従来方法では1000
個中10個規格外のものが含まれていたのに対し、本発
明の方法では1000個中10も規格外のものは含まれ
ていなかった。このように、本発明の寸法自動検査方法
は従来に比して検査精度が格段に向上することが認めら
れた。1000 filament coils each having the configuration shown in FIGS. 3(A) and 3(B) were judged to be non-defective by using the conventional dimensional inspection method using visual inspection and a gauge, and the dimensional inspection method of the present invention. When we measured the foot height of each of these 2000 pieces using a measuring device, we found that 1000
In contrast, 10 out of 1,000 items contained non-standard items, whereas in the method of the present invention, 10 out of 1000 items did not contain any non-standard items. As described above, it has been confirmed that the automatic dimension inspection method of the present invention has significantly improved inspection accuracy compared to the conventional method.
発明の詳細
な説明したように、本発明によれば、フィラメントコイ
ルの足部寸法、角度の検査精度を従来に比して大幅に向
上することができ、その結果ランプ製造工程での形状2
寸法を安定させ、ランプ諸特性のばらつきの少ないもの
を得ることができる。また、フィラメントコイルの検査
が自動化でき、ランプコストの低減も可能となる。DETAILED DESCRIPTION OF THE INVENTION As described in detail, according to the present invention, it is possible to significantly improve the inspection accuracy of the foot dimensions and angles of filament coils compared to the conventional methods, and as a result, shape 2 in the lamp manufacturing process can be improved.
It is possible to obtain a lamp with stable dimensions and less variation in lamp characteristics. In addition, inspection of filament coils can be automated and lamp costs can be reduced.
第1図は本発明の方法を実施するための装置の一例を示
す斜視図、第2図は同装置によるフイメントコイルの足
部の星浮き状態の検査を説明するための図、第3図(A
)、(B)はフイメントコイルの正面図および平面図で
ある。
1・・・・・・フィラメントコイル、la・・・・・・
コイル部、1b・・・・・・足部、2・・・・・・パー
ツフィーダ、3・・・・・・治具、3a・・・・・・溝
、3b・・・・・・段差部、4・・・・・・回転ゲージ
。
代理人の氏名 弁理士 粟野 重孝 ほか1名子
照−37
願
圀
工
丸 剋 q
さFIG. 1 is a perspective view showing an example of an apparatus for carrying out the method of the present invention, FIG. 2 is a diagram for explaining the inspection of the star-floating state of the foot of a filament coil using the same apparatus, and FIG. 3 (A
) and (B) are a front view and a plan view of the filament coil. 1...Filament coil, la...
Coil part, 1b... Foot part, 2... Parts feeder, 3... Jig, 3a... Groove, 3b... Step Section 4...Rotation gauge. Name of agent: Patent attorney Shigetaka Awano and one other child
Teru-37 Kankuni Koumaru q sa
Claims (1)
びて形成され、コイル軸に沿って設けられた両足部とを
有するフィラメントコイルを連続して一方向に移動させ
る治具と、前記フィラメントコイルの移動経路中に設置
した回転ゲージとを備え、前記治具は前記コイル部を収
容するための半円形の溝と、前記フィラメントコイルの
両足部を位置決めし、かつ前記足部の高さの許容限界の
高さで前記溝に隣接して設けた段差部とを有しており、
さらに前記回転ゲージを前記段差部の許容限界の高さ位
置にこの段差部に臨んで設けたことを特徴とするフィラ
メントコイルの寸法自動検査方法。A jig for continuously moving a filament coil in one direction, the filament coil having a coil part and both legs extending in opposite directions from both ends of the coil part and provided along the coil axis; and a rotation gauge installed in the moving path, and the jig has a semicircular groove for accommodating the coil portion, and positions both feet of the filament coil, and has an allowable limit for the height of the feet. and a stepped portion provided adjacent to the groove at a height of
The automatic dimension inspection method for a filament coil is further characterized in that the rotation gauge is provided at a height position within the permissible limit of the stepped portion, facing the stepped portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12083289A JP2790481B2 (en) | 1989-05-15 | 1989-05-15 | Automatic dimension inspection method for filament coil |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12083289A JP2790481B2 (en) | 1989-05-15 | 1989-05-15 | Automatic dimension inspection method for filament coil |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02299148A true JPH02299148A (en) | 1990-12-11 |
JP2790481B2 JP2790481B2 (en) | 1998-08-27 |
Family
ID=14796069
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12083289A Expired - Lifetime JP2790481B2 (en) | 1989-05-15 | 1989-05-15 | Automatic dimension inspection method for filament coil |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2790481B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6817920B1 (en) | 1999-10-20 | 2004-11-16 | Matsushita Electric Industrial Co., Ltd. | Discharge lamp having an electrode with suppression of end portion deformation, discharge lamp electrode and method for producing same |
-
1989
- 1989-05-15 JP JP12083289A patent/JP2790481B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6817920B1 (en) | 1999-10-20 | 2004-11-16 | Matsushita Electric Industrial Co., Ltd. | Discharge lamp having an electrode with suppression of end portion deformation, discharge lamp electrode and method for producing same |
Also Published As
Publication number | Publication date |
---|---|
JP2790481B2 (en) | 1998-08-27 |
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