JPH06176694A - Sealing device for bulb - Google Patents
Sealing device for bulbInfo
- Publication number
- JPH06176694A JPH06176694A JP32401792A JP32401792A JPH06176694A JP H06176694 A JPH06176694 A JP H06176694A JP 32401792 A JP32401792 A JP 32401792A JP 32401792 A JP32401792 A JP 32401792A JP H06176694 A JPH06176694 A JP H06176694A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- mount
- bulb
- claw
- holding mechanism
- 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.)
- Withdrawn
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 77
- 210000000078 claw Anatomy 0.000 claims abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 239000011521 glass Substances 0.000 claims description 10
- 239000011324 bead Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 230000033001 locomotion Effects 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000645 Hg alloy Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は管球の封止装置に係り、
特に外径の異なるバルブに適応しても所要の管球封止を
容易になし得るようにバルブ保持機構を改良した管球の
封止装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tube sealing device,
In particular, the present invention relates to a tube sealing device in which a valve holding mechanism is improved so that a required tube sealing can be easily performed even when it is applied to valves having different outer diameters.
【０００２】[0002]
【従来の技術】たとえば、液晶表示装置のバックライト
として用いられている細管形の蛍光放電ランプ（少なく
とも、片方の電極が冷陰極で成る）は、一般的に管径が
3〜 6mm程度のガラス細管の内壁面に蛍光体被膜を形成
したバルブの両端に、導入線の先端にゲッター材、およ
び水銀合金を含有する電極（冷陰極電極）を取付ける一
方、所定距離を隔ててビードガラスを溶着具備させたマ
ウントを封止・封着することによって製造されている。
そして、前記バルブ両端へのマウントの封止・封着に
は、次のように構成された管球の封止装置が用いられて
いる。すなわち、間欠回動が可能なターンテーブルと、
このターンテーブルの外周側に沿って同一円周上に等間
隔で配置された複数個の封止ヘッドを備えた構成を成
し、前記ターンテーブルの間欠回動に伴う封止ヘッドの
所定停止位置で、所要のバルブおよびマウントを供給す
るとともに、バルブの被封着部にマウントのビードガラ
スが位置するようにして、マウント先端部の電極などを
内装した後、その装着状態でバルブおよびマウントを同
時に回動させながら、加熱・溶着させて所要の封着（封
止）を行っている。2. Description of the Related Art For example, a narrow tube fluorescent discharge lamp (at least one of which is a cold cathode) used as a backlight of a liquid crystal display device generally has a tube diameter of
Attach a getter material and an electrode containing a mercury alloy (cold cathode electrode) to the tip of the lead-in wire at both ends of the bulb with a phosphor coating on the inner wall of a glass tube of about 3 to 6 mm. It is manufactured by sealing and sealing a mount having bead glass welded.
Then, for sealing and sealing the mount on both ends of the bulb, a tube sealing device configured as follows is used. That is, a turntable capable of intermittent rotation,
A predetermined stop position of the sealing head according to the intermittent rotation of the turntable is constituted by a plurality of sealing heads arranged at equal intervals along the outer circumference of the turntable. Then, after supplying the required valve and mount, the bead glass of the mount is positioned in the sealed part of the valve, and the electrode etc. at the tip of the mount are installed, then the valve and mount are mounted at the same time. While rotating, heating and welding are performed to perform the required sealing (sealing).
【０００３】図５は前記管球の封止装置が具備している
封止ヘッドの構成例を斜視的に示したものである。この
封止ヘッドは供給されるバルブ１を掴み（挟着）・保持
するためのバルブ保持機構２、およびマウント３の導入
線（外部導入線となる部分）を掴み保持するマウント保
持機構４を共通の回動支柱５に取付けて一体化してい
る。また、前記共通の回動支柱５は、回動台６の上面に
偏心させて垂直に設置されている。なお、前記回動台６
には回転止片6aが設けられており、この回転止片6aと係
合して、回動台６を所定の停止位置に回転停止させる回
転止手段７が近接配置されている。そして、前記回動台
６は回転軸（図示省略）に支持され、またその回転軸は
ブラケット軸受８で支えられるとともに、他端にベルト
車９が装着された構成を成し、前記ベルト車９に伝動ベ
ルト（図示省略）を掛けて回動させるようになってい
る。FIG. 5 is a perspective view showing a structural example of a sealing head included in the above-mentioned tube sealing device. This sealing head has a valve holding mechanism 2 for grasping (sandwiching) / holding a valve 1 to be supplied and a mount holding mechanism 4 for grasping and holding an introduction line (a portion which becomes an external introduction line) of a mount 3. It is attached to and integrated with the rotating support column 5. Further, the common rotating support column 5 is eccentrically installed on the upper surface of the rotating table 6 and installed vertically. The rotary table 6
An anti-rotation piece 6a is provided at the position, and a anti-rotation means 7 that engages with the anti-rotation piece 6a and stops the rotation of the rotary base 6 at a predetermined stop position is arranged in proximity. The rotary table 6 is supported by a rotary shaft (not shown), and the rotary shaft is supported by a bracket bearing 8 and a belt wheel 9 is attached to the other end. A transmission belt (not shown) is hung on and rotated.
【０００４】さらに、前記バルブ保持機構２の構成につ
いて説明すると、バルブ保持機構２は、平面爪2aおよび
Ｖ溝爪2bを備えており、前記Ｖ溝爪2bは固定ネジ2b′に
よって共通の回動支柱５側に固定されている。一方、平
面爪2aは支持軸2a′により円弧運動可能に支持されてお
り、この支持軸2a′を支点とした円弧運動により、平面
爪2aを移動させて（バルブ保持機構２の開閉）、供給さ
れるバルブ１が掴み保持されるように成っている。ま
た、このバルブ保持機構２の芯出し調整は、供給される
バルブ１の外径に合わせて、バルブ１を掴み保持した状
態で、バルブ１の管軸が封止ヘッドの回転軸とが一致
（同芯）するように、Ｖ溝爪2bの位置を移動・調整した
後、Ｖ溝爪2bを固定ネジ2b′にて固定することによって
行っている。次に、上記構成された封止ヘッドの動作に
ついて説明する。先ず、伝動ベルトによってベルト車９
を介して回動台６を回動させると、回動台６上に偏心さ
せて垂直に設置されている回動支柱５とともに、バルブ
保持機構２およびマウント保持機構４が一体的に回動す
る。このバルブ保持機構２およびマウント保持機構４の
回動に伴って、バルブ保持機構２に供給・保持され、バ
ルブ保持機構２の平面爪2aおよびＶ溝爪2bによって掴み
（挟着）・保持されたバルブ１に、同じくマウント保持
機構４に供給・保持されたマウント３を挿入・装着した
後、この状態でバルブ１およびマウント３も同時に一体
回動する。ここで、バルブ１およびマウント３を同時に
一体回動させながら、予め複数箇所に所定の距離をおい
て配置した加熱・溶着用のガスバーナー10で、バルブ１
の封着部1a外周面を加熱し、バルブ１をマウント３のビ
ードガラスに溶着させて封着（封止）が行われる。な
お、前記バルブ保持機構２の平面爪2aおよびＶ溝爪2bに
よる掴み（挟着）・保持は、先ず平面爪2aの円弧運動に
よりバルブ保持機構２が開き、被保持体であるバルブ１
がＶ溝爪2bにほぼ当接するように供給するとともに、前
記平面爪2aを逆方向に円弧運動させ、バルブ保持機構２
を閉じることによりなされている。Further, the structure of the valve holding mechanism 2 will be described. The valve holding mechanism 2 is provided with a plane claw 2a and a V-groove claw 2b, and the V-groove claw 2b is commonly rotated by a fixing screw 2b '. It is fixed to the column 5. On the other hand, the plane claw 2a is supported by a support shaft 2a 'so that it can move in an arc, and the plane claw 2a is moved (opening and closing of the valve holding mechanism 2) by an arc motion with this support shaft 2a' as a fulcrum. The valve 1 to be held is grasped and held. Further, in the centering adjustment of the valve holding mechanism 2, the tube axis of the valve 1 coincides with the rotation axis of the sealing head in a state of gripping and holding the valve 1 in accordance with the outer diameter of the valve 1 to be supplied ( This is done by moving and adjusting the position of the V-groove claw 2b so that they are coaxial with each other, and then fixing the V-groove claw 2b with a fixing screw 2b '. Next, the operation of the sealing head having the above structure will be described. First, the belt wheel 9 by the transmission belt
When the turntable 6 is turned via the, the valve holding mechanism 2 and the mount holding mechanism 4 are integrally turned together with the turning pillar 5 which is eccentrically placed on the turning stand 6 and is vertically installed. . With the rotation of the valve holding mechanism 2 and the mount holding mechanism 4, the valve holding mechanism 2 is supplied and held, and is gripped (sandwiched) and held by the planar claw 2a and the V groove claw 2b of the valve holding mechanism 2. After the mount 3 which is also supplied and held by the mount holding mechanism 4 is inserted into and mounted on the valve 1, the valve 1 and the mount 3 are simultaneously rotated together in this state. Here, the valve 1 and the mount 3 are simultaneously rotated integrally, and the gas burner 10 for heating and welding is arranged in advance at a plurality of positions at predetermined distances.
The outer peripheral surface of the sealing portion 1a is heated to weld the bulb 1 to the bead glass of the mount 3 for sealing (sealing). For grasping (sandwiching) / holding by the flat claw 2a and the V-groove claw 2b of the valve holding mechanism 2, first, the valve holding mechanism 2 is opened by the circular movement of the flat claw 2a, and the valve 1 which is the held object.
Of the valve holding mechanism 2 while supplying the V-groove claw 2b so as to substantially contact the V-groove claw 2b and causing the planar claw 2a to move in an arc in the opposite direction.
Is done by closing.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、前記管
球の封止装置の場合には、上記封止ヘッドのバルブ保持
機構２の構成（構造）に基づき、次のような不都合な問
題がある。すなわち、封止するバルブ１（製造する管
球）の品種変更に伴って、バルブ外径が変更された場
合、封止ヘッドの回転軸とバルブ１の管軸とが芯ズレを
起こすため、その都度同芯になるように、バルブ保持機
構２を調整する必要がある。そして、この再調整は前記
のように、供給されるバルブ１の外径に合わせてＶ溝爪
2bの位置を移動し、バルブ１を掴み保持したときに、バ
ルブ１の管軸が封止ヘッドの回転軸と一致（同芯）する
ように調整した後、固定ネジ2b′でＶ溝爪2bを固定する
ことで芯合わせを行う必要がある。つまり、上記芯ズレ
を回避するための、封止ヘッドの回転軸およびバルブ１
の管軸の芯合わせ・調整には、高度の調整技術および熟
練を要するという問題がある。そして、このような煩雑
な再調整を、ターンテーブルの外周側に沿って配置され
ている複数個の封止ヘッド全てについて行うことは、多
くの工数・時間を要するとともに、一方では、再調整に
伴う管球の封止装置の稼動停止（稼動率の低下）を招来
し、結果的に生産性の低下や製造コストの大幅なアップ
をもたらしている。However, in the case of the tube sealing device, there are the following inconvenient problems based on the configuration (structure) of the valve holding mechanism 2 of the sealing head. That is, when the valve outer diameter is changed due to a change in the type of the valve 1 (the tube to be manufactured) to be sealed, the rotation axis of the sealing head and the tube axis of the valve 1 are misaligned. It is necessary to adjust the valve holding mechanism 2 so that they are coaxial with each other. Then, as described above, this readjustment is performed according to the outer diameter of the valve 1 to be supplied by the V-groove claw.
When the position of 2b is moved and the valve 1 is gripped and held, the tube axis of the valve 1 is adjusted so as to match (concentric) with the rotation axis of the sealing head, and then the V-groove claw 2b is fixed with the fixing screw 2b '. It is necessary to perform centering by fixing. That is, the rotary shaft of the sealing head and the valve 1 for avoiding the misalignment.
There is a problem that a high level of adjustment technique and skill are required for the centering and adjustment of the tube axis. Performing such complicated readjustment for all of the plurality of sealing heads arranged along the outer peripheral side of the turntable requires a lot of man-hours and time, and on the other hand, for readjustment. As a result, the operation of the tube sealing device is stopped (the operating rate is reduced), resulting in a decrease in productivity and a significant increase in manufacturing cost.
【０００６】本発明は上記事情に対処してなされたもの
で、製造する管球の品種、換言すると使用するバルブの
外径が変更されても、バルブ保持機構をその都度再調整
することなく、所要の芯合わせが可能で、生産性のアッ
プや製造のコストダウンに大きく寄与し得る管球の封止
装置の提供を目的とする。The present invention has been made in view of the above circumstances and does not require readjustment of the valve holding mechanism each time, even if the type of tube to be manufactured, in other words, the outer diameter of the valve used is changed. It is an object of the present invention to provide a tube sealing device capable of performing required centering and greatly contributing to an increase in productivity and a reduction in manufacturing cost.
【０００７】[0007]
【課題を解決するための手段】本発明に係る管球の封止
装置は、ガラス細管から成るバルブ外側壁面を掴み（挟
着）・保持する平面爪およびＶ溝爪を備えたバルブ保持
機構と、電極，導入線およびビードガラスで形成された
マウントを保持するマウント保持機構とを具備する封止
ヘッドを、間欠回動するターンテーブルの外周側に沿っ
て同一円周上に等間隔に配置して成る管球の封止装置に
おいて、前記バルブ保持機構の平面爪およびＶ溝爪は対
向して進退可能に配置され、かつ平面爪に対するＶ溝爪
の進退・移動比率を少なくとも 110％に設定して成るこ
とを特徴とする。SUMMARY OF THE INVENTION A tube sealing device according to the present invention comprises a valve holding mechanism having a flat claw and a V-groove claw for gripping (holding) / holding an outer wall surface of a valve made of a thin glass tube. A sealing head having a mount holding mechanism for holding a mount formed of an electrode, a lead wire and a bead glass is arranged at equal intervals along the outer circumference of the intermittently rotating turntable on the same circumference. In the apparatus for sealing a tube, the flat claw and the V-groove claw of the valve holding mechanism are arranged to face each other so as to be able to move forward and backward, and the forward / backward moving ratio of the V-groove claw to the flat claw is set to at least 110%. It is characterized by consisting of.
【０００８】すなわち、本発明はバルブ保持機構の、い
わゆるバルブチャックを成す平面爪およびＶ溝爪を対向
・配置し、かつともに進退・移動が可能な構成を選択・
設定するとともに、前記両者が共に進退・移動比率を平
面爪に対しＶ溝爪の方を大きく設定したことを骨子とす
る。That is, according to the present invention, the valve holding mechanism has a flat claw and a V-groove claw forming a so-called valve chuck, which are opposed to each other and can be moved back and forth.
The main point is that both of them set the advance / retreat / movement ratio to be larger for the V-groove claw than for the plane claw.
【０００９】このような本発明の骨子、換言するとバル
ブチャックを成す平面爪およびＶ溝爪の進退・移動比率
を上記のごとく選択・設定した理由について、図１を参
照して説明する。ここでは、Ｖ溝爪 12bの内面角度αを
60°とした場合の例であり、外径がそれぞれ異なるバル
ブ（直径…仮想円）のうち、大径のバルブを Dとし、小
径のバルブを dとしたとき、それらの外径の差による平
面爪 12aの移動距離をL1 ，Ｖ溝爪 12bの移動距離を L
2 とする。なお、Ｖ溝爪 12bおよび平面爪 12aの移動距
離の比率（移動比率と略記）は、前記Ｖ溝爪 12bの内面
角度αに関係するため、Ｖ溝爪 12bの内面角度αを先ず
決めることとし、平面爪 12aの移動距離に対するＶ溝爪
12bの移動距離の設定は、 L1 ＝(D径− d径）／ 2とし、 L2 ＝ L1 ／sin(α／2)の関係式から算定する。The reason for selecting and setting the advancing / retreating / moving ratios of the above-described essence of the present invention, in other words, the flat claw and the V-groove claw forming the valve chuck as described above will be described with reference to FIG. Here, the inner surface angle α of the V-groove claw 12b is
This is an example when the angle is 60 °. Among valves (diameters ... virtual circles) with different outer diameters, let D be the valve with the larger diameter and d the valve with the smaller diameter. The moving distance of the claw 12a is L 1 , and the moving distance of the V-groove claw 12b is L.
Set to 2 . Since the ratio of the moving distances of the V-groove claw 12b and the plane claw 12a (abbreviated as a moving ratio) is related to the inner surface angle α of the V-groove claw 12b, the inner surface angle α of the V-groove claw 12b is first determined. , V-groove claw for the moving distance of the flat claw 12a
The moving distance of 12b is set as L 1 = (D diameter−d diameter) / 2, and is calculated from the relational expression L 2 = L 1 / sin (α / 2).
【００１０】また、移動比率（％）は、 (L2 ／ L1 ）×100 によって示され、前記Ｖ溝爪 12bの
内面角度αが60°の場合、平面爪 12aに対するＶ溝爪 1
2bの移動比率を 200％に設定すればよい。The moving ratio (%) is represented by (L 2 / L 1 ) × 100, and when the inner surface angle α of the V-groove claw 12b is 60 °, the V-groove claw 1 with respect to the plane claw 12a is 1
Set the movement ratio of 2b to 200%.
【００１１】上記の算定方式に従い、Ｖ溝爪 12bの内面
角度αを変化させて、平面爪 12aに対するＶ溝爪 12bの
移動比率を求めた結果を表に示す。According to the above calculation method, the inner surface angle α of the V-groove claw 12b is changed to obtain the moving ratio of the V-groove claw 12b to the plane claw 12a.
【００１２】 なお、前記Ｖ溝爪 12bの内面角度αが60°に設定した場
合は、Ｖ溝の加工が容易であるとともに、バルブ外周面
が３カ所で当接して掴み保持されるので、バルブの安定
した掴み保持が可能となるし、平面爪 12aおよびＶ溝爪
12bの進退・移動機構の構成も容易になる。[0012] When the inner surface angle α of the V-groove claw 12b is set to 60 °, the V-groove is easily machined and the outer peripheral surface of the valve abuts and is held at three positions, so that the valve is stable. It can be gripped and held, and the flat claw 12a and V-groove claw
The structure of the 12b advance / retreat / movement mechanism is also easy.
【００１３】[0013]
【作用】本発明に係る管球の封止装置によれば、封止ヘ
ッドのバルブチャックを成す平面爪およびＶ溝爪を対向
配置し、かつ対向して共に進退・移動してバルブを着脱
するときの両者の移動比率を、前記移動比率に選択・設
定したことにより、バルブの外径を考慮せずに、最初に
選択・設定した移動比率で平面爪およびＶ溝爪を進退・
移動させてバルブを掴み保持しても、バルブの外径に関
係なくバルブの管軸を封止ヘッドの回転軸上に芯合わせ
し得る。つまり、外径の異なるバルブに変更して管球を
製造する場合でも、バルブ外径の変更に伴うバルブチャ
ック部の再調整を行うことなく、良好な生産性および歩
留まりなどをもって、信頼性の高い管球の封止を容易に
行い得る。According to the tube sealing device of the present invention, the flat claw and the V-groove claw forming the valve chuck of the sealing head are arranged to face each other, and the valve is attached / detached by moving back and forth together. By selecting and setting the moving ratio of both of them at the moving ratio, the plane claw and V-groove claw are moved forward / backward at the first selected / set moving ratio without considering the outer diameter of the valve.
Even if the valve is gripped and held by moving it, the tube axis of the valve can be aligned with the rotation axis of the sealing head regardless of the outer diameter of the valve. In other words, even when a bulb is manufactured by changing to a valve having a different outer diameter, there is no need to readjust the valve chuck portion due to the change in the outer diameter of the valve, and the productivity is high and the yield is high. The tube can be easily sealed.
【００１４】[0014]
【実施例】以下、図２〜図４を参照して、本発明に係る
管球の封止装置の実施例を説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a tube sealing device according to the present invention will be described below with reference to FIGS.
【００１５】図２は本発明に係る管球の封止装置が具備
する封止ヘッドの要部構成例を示す斜視図であり、さら
に図３ (a)， (b)はバルブ保持機構12がバルブを掴み保
持する動作を模式的に示す平面図である。FIG. 2 is a perspective view showing a structural example of a main part of a sealing head included in the tube sealing device according to the present invention, and FIGS. 3 (a) and 3 (b) show a valve holding mechanism 12 It is a top view which shows the operation | movement which grasps and holds a valve typically.
【００１６】本発明に係る管球の封止装置は、間欠回転
するターンテーブル（省略）と、このターンテーブルの
外周側に沿って同一円周上に等間隔に配置された複数個
の封止ヘッドとを具備しており、基本的な構成は従来の
管球の封止装置の場合と同様であり、前記したように封
止ヘッドの構成に特徴がある。したがって、この実施例
では、封止ヘッドの構成，動作を中心に説明する。The tube sealing device according to the present invention comprises an intermittently rotating turntable (omitted) and a plurality of sealing elements arranged at equal intervals along the outer circumference of the turntable on the same circumference. The sealing head is provided with a head, and the basic structure is the same as that of the conventional tube sealing device, and as described above, the structure of the sealing head is characteristic. Therefore, in this embodiment, the structure and operation of the sealing head will be mainly described.
【００１７】先ず、封止ヘッドは、供給されるバルブ11
を掴み保持するバルブ保持機構12、およびマウント13の
導入線を掴み垂直に保持するマウント保持機構14を共通
の回動支柱15に、それぞれ取付けて一体化した構成を成
している。また、前記共通の回動支柱15は、回動台16の
上面に偏心させて垂直に設置されている。なお、前記回
動台16は回転止片 16aを具備しており、この回転止片 1
6aが近接配置されている回転停止手段17と係合して、回
動台16を所定の各停止位置に回転停止させる構成を採っ
ている。そして、前記回動台16は図示されていない回転
軸に支持され、またその回転軸はブラケット軸受け18で
支えられるとともに、他端にベルト車19が装着されてお
り、このベルト車19が伝導ベルト（図示省略）により回
動される構成に成っている。First, the sealing head is supplied with the valve 11
A valve holding mechanism (12) for holding and holding the valve and a mount holding mechanism (14) for holding and vertically holding the introduction line of the mount (13) are attached to a common turning column (15), respectively, and integrated. Further, the common rotating column 15 is eccentrically installed vertically on the upper surface of the rotating table 16. The rotary table 16 is provided with a rotation stop piece 16a.
6a is engaged with the rotation stopping means 17 arranged in proximity to stop the rotation of the turntable 16 at each predetermined stop position. The rotating table 16 is supported by a rotating shaft (not shown), the rotating shaft is supported by a bracket bearing 18, and a belt wheel 19 is attached to the other end. The belt wheel 19 is a conductive belt. It is configured to be rotated by (not shown).
【００１８】次に、本発明の要部を成す封止ヘッドのバ
ルブ保持機構12の構成，動作について、さらに説明する
と、前記回動台16の上面に偏心させて垂直に設置された
共通の回動支柱15の上端に、バルブ保持機構12の基盤と
なる平面的に概ね凹形状を成す回動板 12cが、凹部を前
方として水平に配置・固定されている。また、前記回動
板 12cの前方上面に対向配置して取付けられた左右方向
に進退・移動可能な第１のスライダー 12d， 12d′を介
して第１の可動支持体 12e， 12e′が配置されている。
そして、これら第１の可動支持体 12e， 12e′でそれぞ
れ支持された平面爪 12aおよびＶ溝爪 12b（この例では
内面角度が60°のＶ溝を上下２段に配置）は、進退・移
動可能に、かつ互いに対向配置されており、両者でバル
ブチャックを構成する。Next, the structure and operation of the valve holding mechanism 12 of the sealing head, which is an essential part of the present invention, will be described in more detail. A common rotary unit eccentrically installed on the upper surface of the rotary table 16 and installed vertically. A rotary plate 12c, which is a base of the valve holding mechanism 12 and has a generally concave shape in a plan view, is horizontally arranged and fixed to the upper end of the moving strut 15 with the concave portion facing forward. In addition, first movable supports 12e and 12e 'are arranged via first sliders 12d and 12d' which are attached to the front upper surface of the rotating plate 12c so as to be opposed to each other and which can be moved forward and backward and movable. ing.
The plane claws 12a and the V-groove claws 12b (in this example, V-grooves having an inner surface angle of 60 ° are vertically arranged in two steps) supported by the first movable supports 12e and 12e 'are moved forward and backward. It is possible and arranged so as to face each other, and both constitute a valve chuck.
【００１９】さらに、平面的に概ね凹形状を成す板カム
12fが凹部を前方として、前記回動板 12c面上に配置
（載置）されている。そして、この板カム 12fは第２の
可動支持体 12gおよび第２のスライダー 12hを介して前
後方向に進退・移動可能に構成されている。また、前記
板カム 12fの前方凹部の左右に位置して、平面爪 12aに
対応するローラ溝 12i，Ｖ溝爪 12bに対応するローラ溝
12i′が設けられており、前記第１の可動支持体 12e，
12e′の上面にそれぞれ配置されているローラ 12j， 1
2j′が滑動可能に嵌合されて、前記板カム 12fの前後方
向への進退・移動をガイドしている。そして、前記平面
爪 12aに対応するローラ溝 12i、およびＶ溝爪 12bに対
応するローラ溝 12i′の形設（形状）は、Ｖ溝爪 12bの
内面角度αによって適宜選択・設定され、たとえばＶ溝
爪 12bの内面角度αが60°の場合、図３に平面的に示す
ごとくローラ溝 12i， 12i′を形設することにより、平
面爪12aに対するＶ溝爪 12bの移動比率が 200％に設定
される。なお、 12k， 12k′は前記回動板 12cと板カム
12fとの間に配置され、板カム 12fを常時後方へ引き付
けてバルブチャックを閉止する作用を成す引っ張りバネ
である。さらに、前記ターンテーブルの間欠回動によっ
て封止ヘッドが移動・停止するバルブ供給位置では、バ
ルブ保持機構12の後方に位置して、たとえばエアーシリ
ンダで前後に動作するバルブチャック開閉手段21が配置
され、バルブ保持機構12の前方に位置しては、バルブ供
給手段（図示を省略）が配置されている。Further, a plate cam having a generally concave shape in plan view
12f is arranged (placed) on the surface of the rotating plate 12c with the concave portion facing forward. The plate cam 12f is configured to be movable back and forth and movable in the front-rear direction via the second movable support 12g and the second slider 12h. Roller grooves 12i corresponding to the flat claw 12a and roller grooves corresponding to the V-groove claw 12b are located on the left and right of the front concave portion of the plate cam 12f.
12i ′ is provided, and the first movable support 12e,
Rollers 12j, 1 respectively placed on the upper surface of 12e ′
2j 'is slidably fitted to guide forward and backward movements of the plate cam 12f. The shape (shape) of the roller groove 12i corresponding to the flat claw 12a and the roller groove 12i 'corresponding to the V groove claw 12b is appropriately selected and set according to the inner surface angle α of the V groove claw 12b. When the inner surface angle α of the groove claw 12b is 60 °, the moving ratio of the V groove claw 12b to the plane claw 12a is set to 200% by forming the roller grooves 12i and 12i ′ as shown in plan view in FIG. To be done. 12k and 12k 'are the rotating plate 12c and the plate cam.
It is an extension spring which is arranged between the plate cam 12f and 12f and always pulls the plate cam 12f rearward to close the valve chuck. Further, at the valve supply position where the sealing head is moved / stopped by the intermittent rotation of the turntable, the valve chuck opening / closing means 21 which is located at the rear of the valve holding mechanism 12 and operates back and forth by, for example, an air cylinder is arranged. A valve supply means (not shown) is disposed in front of the valve holding mechanism 12.
【００２０】次に上記構成の管球の封止装置の動作につ
いて説明する。Next, the operation of the tube sealing device having the above structure will be described.
【００２１】先ず、伝動ベルトを駆動させて、回動台16
を回動させると、回動台16上に偏芯させて垂直に設置し
てある共通の回動支柱15とともにバルブ保持機構12およ
びマウント保持機構14を一体的に回動させる一方、ター
ンテーブルを間欠回転させ、封止ヘッドをマウント供給
位置に移動させるとともに、回転停止手段17を動作させ
て、封止ヘッドの回転を停止させる。ここで、予め配置
してあるマウント保持機構開閉手段（図示省略）でマウ
ント保持機構14を開き、マウント供給手段（図示省略）
によってマウント13を供給すると同時に閉止し、マウン
ト13を垂直に保持させる。First, the rotating belt 16 is driven by driving the transmission belt.
When is rotated, the valve holding mechanism 12 and the mount holding mechanism 14 are integrally rotated together with the common rotation column 15 which is eccentrically placed on the rotation base 16 and is vertically installed. The sealing head is intermittently rotated to move to the mount supply position, and the rotation stopping means 17 is operated to stop the rotation of the sealing head. Here, the mount holding mechanism 14 is opened by the mount holding mechanism opening / closing means (not shown) arranged in advance, and the mount supply means (not shown).
The mount 13 is supplied and closed at the same time, and the mount 13 is held vertically.
【００２２】次に、ターンテーブルの間欠回によって転
封止ヘッドをバルブ供給位置（図示省略）に移動させ、
回転停止手段17を動作させて、封止ヘッドの回転を停止
させる。ここで、バルブチャック開閉手段21を前進作動
させて、バルブ保持機構12の板カム 12fの後方を押す
と、第２のスライダー 12hに連接（支持）された板カム
12fが前進移動するので、前記板カム 12fに対に設けら
れているローラ溝 12i，12i′に滑動可能に嵌合されて
いるローラ 12j， 12j′とともに第１の可動支持体 12
e， 12e′が左右に移動する。そして、この左右移動す
る第１の可動支持体12e， 12e′に支持されている平面
爪 12aおよびＶ溝爪 12bが同時に後退・離隔してバルブ
チャックは開いた状態になる。このようにして開いたバ
ルブチャックに、同じく予め配置してあるバルブ供給手
段（図示省略）によって、バルブ11を供給するととも
に、前記マウント保持機構14に保持されたマウント13の
ビートガラスが内装される位置まで、前記バルブ11を下
降させると同時に、前記バルブチャック開閉手段21を後
退させる。Next, the rolling head is moved to the valve supply position (not shown) by intermittently turning the turntable,
The rotation stopping means 17 is operated to stop the rotation of the sealing head. Here, when the valve chuck opening / closing means 21 is operated to move forward and the rear side of the plate cam 12f of the valve holding mechanism 12 is pushed, the plate cam connected to (supported by) the second slider 12h.
Since the 12f moves forward, the first movable support 12 together with the rollers 12j, 12j 'slidably fitted in the roller grooves 12i, 12i' provided in a pair on the plate cam 12f.
e and 12e ′ move left and right. Then, the flat claw 12a and the V-groove claw 12b supported by the first movable supports 12e and 12e 'that move left and right simultaneously retreat and separate, and the valve chuck is opened. In the valve chuck thus opened, the valve 11 is supplied by the valve supply means (not shown) which is also arranged in advance, and the beat glass of the mount 13 held by the mount holding mechanism 14 is installed. At the same time as lowering the valve 11 to the position, the valve chuck opening / closing means 21 is retracted.
【００２３】このバルブチャック開閉手段21の後退によ
って、押圧作用から開放された板カム 12fは、引っ張り
バネ 12k， 12k′の作用によって後退する。この板カム
12fの後退に伴ない、前記ローラ溝 12i， 12i′に滑動
可能に嵌合されているローラ12j， 12j′が滑動し、平
面爪 12aおよびＶ溝爪 12bが左右から同時に接近して、
バルブチャックが閉止するので、前記供給されたバルブ
11を垂直に掴み・保持することになる（図２ (a),(b)参
照）。When the valve chuck opening / closing means 21 is retracted, the plate cam 12f released from the pressing action is retracted by the action of the tension springs 12k and 12k '. This plate cam
Along with the backward movement of 12f, the rollers 12j and 12j ′ slidably fitted in the roller grooves 12i and 12i ′ slide, and the plane claw 12a and the V-groove claw 12b simultaneously approach from the left and right,
As the valve chuck closes, the supplied valve
It will grab and hold 11 vertically (see Figures 2 (a) and 2 (b)).
【００２４】次いで、前記バルブ保持機構12を回動させ
ながら、ターンテーブルを間欠回動させて、予め複数位
置に所定の間隔をおいて配置した加熱・封着用ガスバー
ナー20のフレームで、バルブ11の封着部 11aの外周面を
加熱し、バルブ11をマウント13のビードガラスに溶着し
て封着を行う。Next, while rotating the valve holding mechanism 12, the turntable is intermittently rotated, and the valve 11 is rotated by the frame of the heating / sealing gas burner 20 which is previously arranged at a plurality of positions at predetermined intervals. The outer peripheral surface of the sealing portion 11a is heated to weld the bulb 11 to the bead glass of the mount 13 for sealing.
【００２５】その後、取出位置では前記回転停止手段17
を作動させ、封止ヘッドの回転を停止させるとともに、
予め取出位置に配置されている前記バルブチャック開閉
手段21、およびマウント保持機構開閉手段をともに作動
させ、それぞれの開閉手段21などを開くと同時に、取出
手段（図示省略）によってバルブ11の所定部を掴み、前
記封着が完了した封止ランプを取出すという手順で動作
する。Thereafter, at the take-out position, the rotation stopping means 17
To stop the rotation of the sealing head,
The valve chuck opening / closing means 21 and the mount holding mechanism opening / closing means, which are arranged in advance in the take-out position, are actuated together to open the respective opening / closing means 21 and at the same time, a predetermined part of the valve 11 is opened by the take-out means (not shown). It operates by the procedure of gripping and taking out the sealed lamp that has been sealed.
【００２６】[0026]
【発明の効果】本発明に係る管球の封止装置によれば、
上記説明からも分かるように、バルブの外径変更がなさ
れた場合でも、その外径変更に関わりなくバルブの管軸
が、常に封止ヘッドの回転軸上に位置するように自動的
に設定されるので、管球の封止装置の稼動率向上および
生産性の向上を図り得る。つまり、封止する管球の種類
変更（バルブの外径変更）の都度、ターンテーブルの外
周側に沿って配置されている複数個の封止ヘッド全てに
ついて、それら封止ヘッドが具備するバルブ保持機構の
再調整が全面的に不要となる。ここで、バルブ保持機構
の煩雑な再調整が不要化することは、再調整に要した工
数および時間を削減し、加えて再調整のための管球封止
装置の稼動停止に伴なう稼動率低下の解消（回避）とな
って、生産性の改善および製造コストの低減など多くの
利点をもたらす。According to the tube sealing device of the present invention,
As can be seen from the above explanation, even if the outside diameter of the valve is changed, the tube axis of the valve is automatically set so that it is always located on the rotation axis of the sealing head regardless of the outside diameter change. Therefore, it is possible to improve the operating rate and productivity of the tube sealing device. In other words, every time the type of bulb to be sealed is changed (the outer diameter of the valve is changed), the valve holding of the plurality of sealing heads arranged along the outer peripheral side of the turntable is maintained. The readjustment of the mechanism is completely unnecessary. Here, eliminating the need for complicated readjustment of the valve holding mechanism reduces the man-hours and time required for readjustment, as well as the operation associated with the shutdown of the bulb sealing device for readjustment. The reduction (avoidance) of the rate decrease brings many advantages such as productivity improvement and manufacturing cost reduction.
【図１】本発明に係る管球の封止装置の封止ヘッドが具
備するバルブ保持機構の平面爪およびＶ溝爪の対向して
の進退・移動の状態を模式的に示す平面図。FIG. 1 is a plan view schematically showing a state in which a flat claw and a V-groove claw of a valve holding mechanism included in a sealing head of a tube sealing device according to the present invention are opposed to each other and moved back and forth.
【図２】本発明に係る管球の封止装置の主要部を成す封
止ヘッドの構成例を示す斜視図。FIG. 2 is a perspective view showing a configuration example of a sealing head which is a main part of a tube sealing device according to the present invention.
【図３】本発明に係る管球の封止装置が具備する封止ヘ
ッドのバルブ保持機構のバルブチャック機能を模式的に
示したもので、 (a)は平面爪およびＶ溝爪が対向・前進
してバルブを掴み保持した状態を示す平面図、 (b)は平
面爪およびＶ溝爪が対向・後退してバルブの掴み保持を
開放した状態を示す平面図。FIG. 3 schematically shows a valve chuck function of a valve holding mechanism of a sealing head included in a tube sealing device according to the present invention, in which (a) a flat claw and a V-groove claw are opposed to each other. The top view which shows the state which advanced and grasped and hold | maintained the valve, (b) is a top view which shows the state which a plane claw and a V-groove claw oppose and retreat, and hold | maintained the valve.
【図４】本発明に係る管球の封止装置が具備する封止ヘ
ッドのバルブ保持機構例におけるバルブチャック機能を
模式的に示す平面図。FIG. 4 is a plan view schematically showing a valve chuck function in an example of a valve holding mechanism of a sealing head included in a tube sealing device according to the present invention.
【図５】従来例の管球の封止装置が具備している封止ヘ
ッドの構成を示す斜視図。FIG. 5 is a perspective view showing a configuration of a sealing head included in a conventional tube sealing device.
１，11…バルブ 1a，11a …バルブの封着部 ２，
12…バルブ保持機溝 2a,12a…平面爪 2b,12b…Ｖ溝爪 ３，13…マウン
ト ４，14…マウント保持機溝 ５，15…共通の回
動支柱 ６，16…回動台 6a， 16a…回転止片
７，17…回転停止手段 ８，18…ブラケット軸受
９，19…ベルト車 10，20…ガスバーナー 12c…
回転板 12d， 12d′…第１のスライダー 12e，
12e′…第１の可動支持体 12f…板カム 12g…
第２の可動支持体 12h…第２のスライダー 12
i， 12i′…ローラ溝 12j，12j′…ローラ 12
k， 12k′…引っ張りバネ 21…バルブチャック開閉
手段1,11 ... Valve 1a, 11a ... Valve sealing part 2,
12 ... Valve retainer groove 2a, 12a ... Planar claw 2b, 12b ... V groove claw 3, 13 ... Mount 4,14 ... Mount retainer groove 5, 15 ... Common rotation column 6, 16 ... Rotation base 6a, 16a ... Rotation stop
7, 17 ... Rotation stop means 8, 18 ... Bracket bearing
9, 19 ... Belt wheel 10, 20 ... Gas burner 12c ...
Rotating plates 12d, 12d '... First slider 12e,
12e '... 1st movable support 12f ... Plate cam 12g ...
Second movable support 12h ... second slider 12
i, 12i '... Roller groove 12j, 12j' ... Roller 12
k, 12k '… tension spring 21… valve chuck opening / closing means
Claims (1)
み・保持する平面爪およびＶ溝爪を備えたバルブ保持機
構と、電極，導入線およびビードガラスで形成されたマ
ウントを保持するマウント保持機構とを具備する封止ヘ
ッドを、間欠回動するターンテーブルの外周側に沿って
同一円周上に等間隔に配置して成る管球の封止装置にお
いて、 前記バルブ保持機構の平面爪およびＶ溝爪は対向して進
退可能に配置され、かつ平面爪に対するＶ溝爪の進退・
移動比率を少なくとも 110％に設定して成ることを特徴
とする管球の封止装置。1. A valve holding mechanism provided with a flat claw and a V-groove claw for gripping and holding an outer wall surface of a valve made of a glass thin tube, and a mount holding mechanism for holding a mount formed of an electrode, a lead wire and a bead glass. In a sealing device for a tube, the sealing head having the above is arranged at equal intervals on the same circumference along the outer peripheral side of a turntable that rotates intermittently. The claws are arranged facing each other so that they can move forward and backward, and the V-groove claws move forward and backward with respect to the flat claw
A tube sealing device, wherein the moving ratio is set to at least 110%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32401792A JPH06176694A (en) | 1992-12-03 | 1992-12-03 | Sealing device for bulb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32401792A JPH06176694A (en) | 1992-12-03 | 1992-12-03 | Sealing device for bulb |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06176694A true JPH06176694A (en) | 1994-06-24 |
Family
ID=18161215
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32401792A Withdrawn JPH06176694A (en) | 1992-12-03 | 1992-12-03 | Sealing device for bulb |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06176694A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111285124A (en) * | 2020-02-19 | 2020-06-16 | 新昌县宏满机械科技有限公司 | Anti-slip cylinder aluminum alloy clamping and stacking device |
-
1992
- 1992-12-03 JP JP32401792A patent/JPH06176694A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111285124A (en) * | 2020-02-19 | 2020-06-16 | 新昌县宏满机械科技有限公司 | Anti-slip cylinder aluminum alloy clamping and stacking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20000307 |