JPH11238342A - Welding device of magnetic disk cartridge - Google Patents
Welding device of magnetic disk cartridgeInfo
- Publication number
- JPH11238342A JPH11238342A JP10038874A JP3887498A JPH11238342A JP H11238342 A JPH11238342 A JP H11238342A JP 10038874 A JP10038874 A JP 10038874A JP 3887498 A JP3887498 A JP 3887498A JP H11238342 A JPH11238342 A JP H11238342A
- Authority
- JP
- Japan
- Prior art keywords
- welding
- shell
- outer peripheral
- magnetic disk
- rib
- 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- Withdrawn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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
- B29C66/114—Single butt joints
- B29C66/1142—Single butt to butt joints
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
- B29C66/81419—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled and flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
- B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81415—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being bevelled
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2017/00—Carriers for sound or information
- B29L2017/001—Carriers of records containing fine grooves or impressions, e.g. disc records for needle playback, cylinder records
- B29L2017/003—Records or discs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、磁気ディスクメデ
ィアを収容する上シェルと下シェルを超音波溶着で接合
する磁気ディスクカートリッジの溶着装置に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnetic disk cartridge welding apparatus for joining an upper shell and a lower shell accommodating a magnetic disk medium by ultrasonic welding.
【０００２】[0002]
【従来の技術】磁気ディスクカートリッジは、合成樹脂
製の上シェルと下シェルを超音波溶着で接合したケース
内に磁気ディスクメディアを回転自在に収容するもので
ある。2. Description of the Related Art A magnetic disk cartridge rotatably accommodates a magnetic disk medium in a case in which an upper shell and a lower shell made of a synthetic resin are joined by ultrasonic welding.
【０００３】この磁気ディスクカートリッジの上シェル
と下シェルとの超音波溶着は、上シェル又は下シェルの
一方を溶着装置の溶着台に載置し、その上に他方のシェ
ルを内面同士を合わせた状態で重ねて上方から溶着ホー
ンで溶着部分を押圧しつつ超音波加振するものである。[0003] In this ultrasonic welding of the upper shell and the lower shell of the magnetic disk cartridge, one of the upper shell and the lower shell is placed on a welding table of a welding apparatus, and the other shell is placed on the inner surface thereof. In this state, ultrasonic vibrations are applied while the welded portion is pressed from above by a welding horn.
【０００４】その際、上下シェルの外周部分に隙間が形
成されると、この部分から外部の塵埃等が侵入して、磁
気ディスクメディアおよび磁気ヘッドに付着して記録性
能に悪影響を与える恐れがあることから、上下シェルの
周囲にそれぞれ壁状に設けられた外周リブを相互に溶着
して、隙間が開くのを防止することが行われれる。特
に、磁気ディスクメディアの記録容量が増大するのに伴
って塵埃による記録特性への影響が顕著となることか
ら、上下シェルの外周部分の溶着が必要とされる。At this time, if a gap is formed in the outer peripheral portion of the upper and lower shells, external dust and the like may enter from this portion and adhere to the magnetic disk medium and the magnetic head to adversely affect the recording performance. Therefore, the peripheral ribs provided in a wall shape around the upper and lower shells are welded to each other to prevent a gap from being opened. In particular, as the recording capacity of the magnetic disk medium increases, the influence of dust on the recording characteristics becomes significant, so that the outer peripheral portions of the upper and lower shells need to be welded.
【０００５】また、上記上下シェルの外周リブの一部に
突起状の溶着リブを形成して、溶着時にはこの溶着リブ
が溶融して接合剤と同様に作用し、外周リブの良好な超
音波溶着が行えるようにすることが知られている。Further, projecting welding ribs are formed on a part of the outer peripheral ribs of the upper and lower shells. At the time of welding, the welding ribs are melted and act in the same manner as a bonding agent, so that excellent ultrasonic welding of the outer peripheral ribs is performed. It is known to be able to do this.
【０００６】[0006]
【発明が解決しようとする課題】ところで、磁気ディス
クカートリッジの外形形状において、その外周縁部の上
下面が曲面に形成されることが考えられる。例えば、後
述の図２に示すように、上シェル２及び下シェル３の外
面周縁部に表面から側面に向けて角部が曲面状に除去さ
れた曲面部２ａ，３ａが設けられ、他の磁気ディスクカ
ートリッジとのデザイン的な差別化、記録容量の増大に
伴う従来容量磁気ディスクカートリッジとの識別化等が
図られる。By the way, in the external shape of the magnetic disk cartridge, it is conceivable that the upper and lower surfaces of the outer peripheral portion are formed into curved surfaces. For example, as shown in FIG. 2 to be described later, the outer shells of the upper shell 2 and the lower shell 3 are provided with curved surface portions 2a and 3a whose corners are removed in a curved shape from the surface to the side surface. Discrimination in design from a disk cartridge, discrimination from a conventional capacity magnetic disk cartridge accompanying an increase in recording capacity, and the like are achieved.
【０００７】しかして、上記のような外周縁部が曲面部
に設けられた磁気ディスクカートリッジにおいては、前
述のような溶着装置によって外周リブの溶着を行おうと
する場合に、溶着不良が発生する恐れがある。However, in the magnetic disk cartridge in which the outer peripheral edge is provided on the curved surface as described above, when the outer peripheral ribs are to be welded by the above-described welding apparatus, a welding defect may occur. There is.
【０００８】すなわち、溶着部分を押圧しつつ超音波加
振する溶着ホーンは、シェルの表面に先端面が全体的に
圧接するか、溶着部分の直上を圧接することがエネルギ
ーの伝達のために重要であり、離れているとエネルギー
の伝達ロスが増大して良好な超音波溶着が行えなくなる
ものである。しかし、前述のように外周リブの溶着を行
うについて、この外周リブの直上のシェル表面部分が前
記曲面部に設けられると、この部分に溶着ホーンの先端
部を接触させることができず、外周リブより中心側にず
れた平坦位置を溶着ホーンによって押圧するようにしな
ければならなくなり、エネルギーロスの増大により溶着
が弱くなると共に、溶着ホーンの押圧力によって上下シ
ェルが変形し、この変形状態のまま溶着されてシェル外
周部の口開きが発生する恐れがある。That is, in the welding horn which applies ultrasonic vibration while pressing the welding portion, it is important for the transmission of energy that the tip end surface is entirely pressed against the surface of the shell or pressed directly above the welding portion. If the distance is large, the energy transmission loss increases, and good ultrasonic welding cannot be performed. However, as described above, when the outer peripheral rib is welded, if the shell surface portion immediately above the outer peripheral rib is provided on the curved surface portion, the tip of the welding horn cannot be brought into contact with this portion, so that the outer peripheral rib cannot be contacted. Welding horns must be used to press the flat position that is more deviated to the center side.Welding is weakened due to an increase in energy loss, and the upper and lower shells are deformed by the pressing force of the welding horn. As a result, there is a possibility that the opening of the outer peripheral portion of the shell may occur.
【０００９】そこで本発明は上記事情に鑑み、上シェル
と下シェルとの超音波溶着時におけるエネルギーロスを
抑制すると共に口開きを阻止して外周リブを良好に溶着
できるようにした磁気ディスクカートリッジの溶着装置
を提供せんとするものである。In view of the above circumstances, the present invention is directed to a magnetic disk cartridge which suppresses energy loss at the time of ultrasonic welding of an upper shell and a lower shell and prevents opening of a mouth so that an outer peripheral rib can be welded well. It is intended to provide a welding device.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決した本発
明の磁気ディスクカートリッジの溶着装置は、周囲に壁
状に外周リブをそれぞれ有し、磁気ディスクメディアを
収納する上シェルと下シェルの一方を溶着台に載置し、
その上に他方のシェルを前記外周リブを突き合わせた状
態で重ねて上方から溶着ホーンで押圧しつつ超音波加振
して上記上シェルと下シェルを超音波溶着するについ
て、前記上シェル及び下シェルの外面周縁部が曲面部に
設けられ、前記溶着台及び溶着ホーンの少なくとも一方
に、溶着台に載置した上下シェルの上記曲面部に接触す
る当接部を設けたことを特徴とするものである。According to the present invention, there is provided a welding apparatus for a magnetic disk cartridge, which has an outer peripheral rib in a wall shape around the magnetic disk cartridge and has one of an upper shell and a lower shell for accommodating a magnetic disk medium. On the welding table,
The upper shell and the lower shell are formed by superposing the other shell on the outer shell with the outer peripheral ribs abutting on each other and applying ultrasonic vibration while pressing with a welding horn from above to ultrasonically weld the upper shell and the lower shell. Is provided on a curved surface portion, and at least one of the welding table and the welding horn is provided with a contact portion that contacts the curved surface portion of the upper and lower shells mounted on the welding table. is there.
【００１１】また、前記上シェル又は下シェルの外周リ
ブの突き合わせ面の一部に溶着リブを設け、前記当接部
は、この溶着リブの配設位置近傍の曲面部に接触するの
が好適である。It is preferable that a welding rib is provided on a part of the abutting surface of the outer rib of the upper shell or the lower shell, and that the contact portion comes into contact with a curved surface near the position where the welding rib is provided. is there.
【００１２】[0012]
【発明の効果】上記のような本発明によれば、溶着台及
び溶着ホーンの少なくとも一方に、溶着台に載置した上
下シェルの外面周縁部の曲面部に接触する当接部を設け
たことにより、上下シェルの外周部が口開きとなる変形
を前記曲面部に当接部が接触することによって規制し、
上下シェルを良好な状態に固定して超音波溶着時のエネ
ルギーロスを抑制しつつ外周リブを強い溶着強度で溶着
することができる。According to the present invention as described above, at least one of the welding table and the welding horn is provided with a contact portion that comes into contact with the curved surface of the outer peripheral edge of the upper and lower shells placed on the welding table. Thereby, the deformation in which the outer peripheral portions of the upper and lower shells are opened is regulated by the contact portion contacting the curved surface portion,
By fixing the upper and lower shells in a favorable state, it is possible to weld the outer peripheral rib with a strong welding strength while suppressing energy loss during ultrasonic welding.
【００１３】その際、上下シェルの外周リブに溶着リブ
を設けると、この溶着リブの部分が少ないエネルギーに
よって溶着可能となるものであり、この溶着部分に対応
して当接部を設置することで有効に溶着部分の変形が規
制できる。At this time, if the welding ribs are provided on the outer peripheral ribs of the upper and lower shells, the welding ribs can be welded with a small amount of energy. The deformation of the welded portion can be effectively controlled.
【００１４】[0014]
【発明の実施の形態】以下、本発明の一つの実施の形態
を図面に沿って説明する。図１は本発明装置によって溶
着する磁気ディスクカートリッジの一例を示す平面図、
図２はその縁部の断面構造を示し、図３は上シェルの内
面図を示している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an example of a magnetic disk cartridge welded by the apparatus of the present invention.
FIG. 2 shows a cross-sectional structure of the edge, and FIG. 3 shows an inner view of the upper shell.
【００１５】磁気ディスクカートリッジ１は、上シェル
２と下シェル３とをそれぞれの内面を蓋合わせ状として
超音波溶着されるもので、内部には中心部にセンタコア
６が固着された円盤状の磁気ディスクメディア７が回転
自在に収容され、この磁気ディスクメディア７と上下シ
ェル２，３内面との間にライナー８（図２参照）が介装
される。The magnetic disk cartridge 1 is ultrasonically welded to the upper shell 2 and the lower shell 3 with the respective inner surfaces of the magnetic disk cartridge 1 facing each other, and has a disk-shaped magnetic core having a center core 6 fixed at the center. A disk medium 7 is rotatably accommodated, and a liner 8 (see FIG. 2) is interposed between the magnetic disk medium 7 and the inner surfaces of the upper and lower shells 2 and 3.
【００１６】前記上シェル２及び下シェル３は、例えば
アクリロニトリル−ブタジエン−スチレン共重合体のよ
うな合成樹脂によってほぼ矩形の平板状に成形されてい
る。上シェル２は、図３に示すように、周囲に壁状に外
周リブ４が、各コーナー部の中心側に斜めに磁気ディス
クメディア７の外周に沿う内側リブ２ｂが形成され、中
央部には環状リブ２ｃが立設され、その上方にヘッド挿
入口２ｄが開口されている。また、下シェル３は、平面
形状は示していないが、周囲に壁状に外周リブ４が設け
られ、各コーナー部の中心側に斜めに上シェル２の内側
リブ２ｂおよびヘッド挿入口２ｄと同様の内側リブ及び
ヘッド挿入口が形成され、中央部にはディスク駆動用の
スピンドルが挿入されるハブ孔が開口されている。ま
た、上記ヘッド挿入口２ｄを開閉するシャッター部材９
が組み付けられている。The upper shell 2 and the lower shell 3 are formed into a substantially rectangular flat plate using a synthetic resin such as acrylonitrile-butadiene-styrene copolymer. As shown in FIG. 3, the upper shell 2 has an outer peripheral rib 4 formed in a wall shape on the periphery, an inner rib 2b obliquely extending along the outer periphery of the magnetic disk medium 7 on the center side of each corner, and a central portion. An annular rib 2c is provided upright, and a head insertion opening 2d is opened above the annular rib 2c. Although the lower shell 3 does not show a planar shape, an outer peripheral rib 4 is provided in a wall shape around the lower shell 3, and the inner shell 2 b and the head insertion opening 2 d of the upper shell 2 are inclined obliquely toward the center of each corner. Are formed, and a hub hole into which a spindle for driving a disk is inserted is opened at the center. A shutter member 9 for opening and closing the head insertion opening 2d.
Is assembled.
【００１７】また、前記上シェル２及び下シェル３の外
面周縁部、特にヘッド挿入口２ｄと反対側のシェル側面
においては、図２のように、外周部の縁部に表面から側
面に向けて角部が曲面状に除去された曲面部２ａ，３ａ
が設けられている。そして、この部分の上シェル２の外
周リブ４には、断面三角形状に突出した溶着リブ５（エ
ネルギダイレクタ）が設置されている。As shown in FIG. 2, the outer peripheral edges of the upper shell 2 and the lower shell 3, particularly the shell side opposite to the head insertion opening 2 d, are formed on the outer peripheral edge from the surface to the side. Curved portions 2a, 3a whose corners have been removed in a curved shape
Is provided. A welding rib 5 (energy director) projecting in a triangular cross section is provided on the outer peripheral rib 4 of the upper shell 2 in this portion.
【００１８】さらに、前記上シェル２及び下シェル３の
内面における４隅のコーナー部近傍には、溶着突起２ｅ
（下シェル３については図示していない）が設けられ、
この溶着突起２ｅの部分で上シェル２と下シェル３とを
溶着すると共に、前記溶着リブ５の部分で上下シェル
２，３の外周リブ４を相互に溶着する。Further, welding projections 2e are provided near the four corners of the inner surfaces of the upper shell 2 and the lower shell 3.
(The lower shell 3 is not shown), and
The upper shell 2 and the lower shell 3 are welded at the welding projection 2e, and the outer peripheral ribs 4 of the upper and lower shells 2, 3 are welded to each other at the welding rib 5.
【００１９】上記のような磁気ディスクカートリッジ１
の上シェル２と下シェル３とを溶着する溶着装置１０
は、図４に第１の実施の形態の概略を示すように、上面
のシェル載置部１１ａに下シェル３及び上シェル２を突
き合わせ状態で載置する溶着台１１（溶着ネスト）と、
上方から上シェル２の表面を押圧しつつ超音波加振する
円柱状の溶着ホーン１２とを備えている。The magnetic disk cartridge 1 as described above
Welding device 10 for welding upper shell 2 and lower shell 3
As shown in FIG. 4 schematically showing the first embodiment, a welding table 11 (welding nest) for mounting the lower shell 3 and the upper shell 2 on the upper surface of the shell mounting portion 11a in abutting state,
It has a cylindrical welding horn 12 that presses the surface of the upper shell 2 from above and vibrates ultrasonically.
【００２０】さらに、図示していないが、前記磁気ディ
スクカートリッジ１の四隅の溶着突起２ｅに対応する位
置に対してもそれぞれ円柱状の溶着ホーンが配設され、
これらの溶着ホーン１２は上端部が超音波発振源に固着
されている。Further, although not shown, cylindrical welding horns are also provided at positions corresponding to the welding protrusions 2e at the four corners of the magnetic disk cartridge 1, respectively.
The upper ends of these welding horns 12 are fixed to an ultrasonic oscillation source.
【００２１】そして、前記溶着台１１のシェル載置部１
１ａにおいては、載置される下シェル３の外面周縁部の
曲面部３ａに対応する部分が、この曲面部３ａと同形状
の曲面形状の表面（当接面）を有する当接部１１ｂに形
成され、載置された下シェル３の溶着リブ５近傍の曲面
部３ａと接触するように設けられている。また、同様に
溶着ホーン１２の下端面においては、上シェル２の外面
周縁部の曲面部２ａに対応する部分が、この曲面部２ａ
と同形状の表面（当接面）を有する当接部１２ａに形成
され、載置された上シェル２の溶着リブ５近傍の曲面部
２ａと接触するように設けられている。The shell mounting portion 1 of the welding table 11
In 1a, a portion corresponding to the curved surface portion 3a of the outer peripheral edge of the lower shell 3 to be placed is formed on a contact portion 11b having a curved surface (contact surface) having the same shape as the curved surface portion 3a. The lower shell 3 is provided so as to come into contact with a curved surface portion 3a near the welding rib 5 of the placed lower shell 3. Similarly, on the lower end surface of the welding horn 12, a portion corresponding to the curved surface portion 2a on the outer peripheral edge of the upper shell 2 is formed by the curved surface portion 2a.
A contact portion 12a having a surface (contact surface) having the same shape as that of the upper shell 2 is provided so as to contact the curved surface portion 2a near the welding rib 5 of the placed upper shell 2.
【００２２】上記のような溶着装置１０による前記上シ
ェル２と下シェル３との超音波溶着は、溶着台１１上
に、上シェル２の内面と下シェル３の内面とをそれぞれ
合わせた状態で、図４に示す例では、上シェル２を上に
下シェル３を下にし、その溶着リブ５の配設位置近傍の
下シェル３の曲面部３ａを前記溶着台１１の当接部１１
ｂに接触させた状態で載置する。そして、上シェル２の
シェル外表面の４つのコーナー部の上方に配置した溶着
ホーンで上シェル２の上面を押圧すると共に、外周リブ
４の溶着リブ５の近傍の上方に配設した当接部１２ａを
有する溶着ホーン１２先端で、上シェル２の溶着リブ５
直上の曲面部２ａを押圧しつつ超音波加振し、前記溶着
突起２ｅを溶着すると共に、溶着リブ５を溶融させて外
周リブ４を溶着するものである。The ultrasonic welding of the upper shell 2 and the lower shell 3 by the above-described welding apparatus 10 is performed on a welding table 11 in a state where the inner surface of the upper shell 2 and the inner surface of the lower shell 3 are respectively aligned. In the example shown in FIG. 4, the upper shell 2 is turned up and the lower shell 3 is turned down, and the curved surface 3a of the lower shell 3 near the position where the welding rib 5 is disposed is brought into contact with the contact portion 11 of the welding table 11.
b. The upper surface of the upper shell 2 is pressed by the welding horn disposed above the four corners of the outer surface of the shell of the upper shell 2, and the contact portion disposed above the vicinity of the welding rib 5 of the outer peripheral rib 4. At the tip of the welding horn 12 having the welding rib 12a, the welding rib 5
Ultrasonic vibration is applied while pressing directly above the curved surface portion 2a to weld the welding projection 2e and to melt the welding rib 5 to weld the outer peripheral rib 4.
【００２３】なお、前記各溶着突起２ｅにおいては、そ
の先端面には環状に断面三角形状の溶着リブ（エネルギ
ダイレクタ）が形成されている。Each of the welding projections 2e is provided with a welding rib (energy director) having a triangular cross section at its tip end surface.
【００２４】上記のような超音波溶着時には、外周リブ
４を溶着するための溶着ホーン１２が曲面状の当接部１
２ａによってシェル外縁部の曲面部２ａに当接し、及
び、溶着台１１の曲面状の当接部１１ｂで同様に下シェ
ル３の曲面部３ａを当接保持しているために、この上シ
ェル２及び下シェル３の外周リブ４が外側に変形して外
周リブ４の突き合わせ面が開くのを阻止し、この外周リ
ブ４の部分を上下から押圧した状態で固定して超音波溶
着する。これにより、上下シェル２，３を外周部が口開
きとなることなく外周リブ４同士を圧接した状態で、直
上から超音波溶着時のエネルギーロスを抑制しつつ外周
リブ４を強い溶着強度で効率よく溶着することができ
る。At the time of the ultrasonic welding as described above, the welding horn 12 for welding the outer peripheral rib 4 has a curved contact portion 1.
2a, the upper shell 2 is in contact with the curved surface 2a of the outer peripheral portion of the shell, and the curved surface 3a of the lower shell 3 is similarly held in contact with the curved contact portion 11b of the welding base 11. Further, the outer peripheral ribs 4 of the lower shell 3 are prevented from deforming outward to open the butting surfaces of the outer peripheral ribs 4, and the outer peripheral ribs 4 are fixed by being pressed from above and below and ultrasonically welded. Thus, in a state where the outer peripheral ribs 4 are pressed against each other without opening the outer peripheral portions of the upper and lower shells 2 and 3, the outer peripheral rib 4 is efficiently welded with a strong welding strength while suppressing energy loss during ultrasonic welding from directly above. Can be welded well.
【００２５】図５には溶着装置１０の第２の実施の形態
の概略を示し、溶着台１１及び溶着ホーン１２の当接部
１１ｃ，１２ｂの形態が前例と異なっている。この当接
部１１ｃ，１２ｂ以外の溶着台１１及び溶着ホーン１２
の構造は、図４のものと同様に設けられており、その説
明は省略する。FIG. 5 schematically shows a second embodiment of the welding apparatus 10, in which the forms of the contact portions 11c and 12b of the welding table 11 and the welding horn 12 are different from those of the previous example. The welding base 11 and the welding horn 12 other than the contact portions 11c and 12b
Is provided in the same manner as that of FIG. 4 and the description thereof is omitted.
【００２６】本例の溶着台１１における下シェル３の曲
面部３ａと当接する当接部１１ｃは斜面で構成され、前
記下シェル３における曲面部３ａの中間部分に斜めに当
接して支持するように設けられている。溶着ホーン１２
における上シェル２の曲面部２ａと接触する当接部１２
ｂは、同様に斜面で構成され、曲面部２ａの中間部分に
斜めに当接して押圧するように設けられている。The contact portion 11c of the welding table 11 of the present embodiment, which comes into contact with the curved surface portion 3a of the lower shell 3, is constituted by a slope, so that the lower shell 3 is obliquely contacted and supported at an intermediate portion of the curved surface portion 3a. It is provided in. Welding horn 12
Contact portion 12 that comes into contact with the curved surface portion 2a of the upper shell 2 at
Similarly, b is formed of a slope, and is provided so as to be obliquely brought into contact with an intermediate portion of the curved surface portion 2a and pressed.
【００２７】この実施の形態による溶着台１１と溶着ホ
ーン１２を用いた超音波溶着は、前例と同様に、口開き
を防止した状態でエネルギーロスを抑制しつつ外周リブ
４を効率よく強固に溶着することができる。Ultrasonic welding using the welding table 11 and the welding horn 12 according to this embodiment efficiently and firmly welds the outer peripheral ribs 4 while suppressing energy loss in a state where opening is prevented, as in the previous example. can do.
【００２８】上記両実施の形態では、外周リブ４の一部
にのみ溶着リブ５を設置してこの部分についてのみ外周
リブ４の接合を行うようにしているが、他の部分及び全
周の外周リブ４を溶着してもよい。また、溶着リブ５を
設けていなくても、大きな超音波エネルギーの印加によ
り外周リブ４の溶着が行える。その際、前記当接部は、
外周リブ４の溶着部分に対応して設置すればよい。In both of the above-described embodiments, the welding rib 5 is provided only in a part of the outer rib 4 and the outer rib 4 is joined only to this portion. The rib 4 may be welded. Further, even if the welding rib 5 is not provided, the outer peripheral rib 4 can be welded by applying a large ultrasonic energy. At this time, the contact portion is
What is necessary is just to install corresponding to the welding part of the outer peripheral rib 4. FIG.
【００２９】また、前記当接部は溶着台１１と溶着ホー
ン１２の両方に設けているが、いずれか一方に設けるよ
うにしてもよい。その場合、溶着ホーン側１２に設ける
のが好ましい。Although the contact portions are provided on both the welding table 11 and the welding horn 12, they may be provided on either one of them. In that case, it is preferable to provide it on the welding horn side 12.
【００３０】なお、前記溶着ホーン１２は各コーナー部
分及び外周リブ溶着部に対応した分割構造のものを例と
して示しているが、上シェル２の外表面の全体を１つの
大きな一体型溶着ホーンによって押圧するものも使用可
能である。また、分割構造であっても円柱形状以外の断
面形状に設置してもよい。Although the welding horn 12 has a divided structure corresponding to each corner portion and the outer peripheral rib welding portion as an example, the entire outer surface of the upper shell 2 is formed by one large integrated welding horn. A pressing device can also be used. Moreover, even if it is a divided structure, it may be installed in a cross-sectional shape other than a columnar shape.
【図１】本発明装置によって溶着する一例の磁気ディス
クカートリッジの平面図FIG. 1 is a plan view of an example of a magnetic disk cartridge welded by the apparatus of the present invention.
【図２】上シェルと下シェルとの接合前の分解状態にお
ける図１のＡ−Ａ断面図FIG. 2 is an AA cross-sectional view of FIG. 1 in an exploded state before joining the upper shell and the lower shell.
【図３】磁気ディスクカートリッジの上シェルの内面図FIG. 3 is an inside view of an upper shell of the magnetic disk cartridge.
【図４】本発明の第１の実施の形態における溶着装置に
よる磁気ディスクカートリッジの溶着状態を示す要部断
面図FIG. 4 is an essential part cross-sectional view showing a welding state of the magnetic disk cartridge by the welding device according to the first embodiment of the present invention;
【図５】本発明の第２の実施の形態における溶着装置に
よる磁気ディスクカートリッジの溶着状態を示す要部断
面図FIG. 5 is an essential part cross-sectional view showing a welding state of a magnetic disk cartridge by a welding device according to a second embodiment of the present invention;
１ 磁気ディスクカートリッジ ２ 上シェル ３ 下シェル 2a,3a 曲面部 2e 溶着突起 ４ 外周リブ ５ 溶着リブ ７ 磁気ディスクメディア １０ 溶着装置 １１ 溶着台 11a シェル載置部 １２ 溶着ホーン 11b,11c,12a,12b 当接部 DESCRIPTION OF SYMBOLS 1 Magnetic disk cartridge 2 Upper shell 3 Lower shell 2a, 3a Curved surface part 2e Welding projection 4 Outer rib 5 Welding rib 7 Magnetic disk media 10 Welding device 11 Welding stand 11a Shell mounting part 12 Welding horn 11b, 11c, 12a, 12b Contact
Claims (1)
磁気ディスクメディアを収納する上シェルと下シェルの
一方を溶着台に載置し、その上に他方のシェルを前記外
周リブを突き合わせた状態で重ねて上方から溶着ホーン
で押圧しつつ超音波加振して上記上シェルと下シェルを
超音波溶着する磁気ディスクカートリッジの溶着装置に
おいて、 前記上シェル及び下シェルの外面周縁部が曲面部に設け
られ、 前記溶着台及び溶着ホーンの少なくとも一方に、溶着台
に載置した上下シェルの上記曲面部に接触する当接部を
設けたことを特徴とする磁気ディスクカートリッジの溶
着装置。An outer peripheral rib is formed in a wall shape around the periphery.
One of the upper shell and the lower shell for accommodating the magnetic disk medium is placed on a welding table, and the other shell is placed on top of the welding shell with the outer peripheral ribs abutting against each other. A magnetic disk cartridge welding apparatus for ultrasonically welding the upper shell and the lower shell, wherein outer peripheral edges of the upper shell and the lower shell are provided on a curved surface portion, and welding is performed on at least one of the welding table and the welding horn. A welding device for a magnetic disk cartridge, wherein a contact portion is provided for contacting the curved surface portion of the upper and lower shells mounted on a table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10038874A JPH11238342A (en) | 1998-02-20 | 1998-02-20 | Welding device of magnetic disk cartridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10038874A JPH11238342A (en) | 1998-02-20 | 1998-02-20 | Welding device of magnetic disk cartridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11238342A true JPH11238342A (en) | 1999-08-31 |
Family
ID=12537371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10038874A Withdrawn JPH11238342A (en) | 1998-02-20 | 1998-02-20 | Welding device of magnetic disk cartridge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11238342A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019081301A (en) * | 2017-10-31 | 2019-05-30 | 日産自動車株式会社 | Joined body and manufacturing method of joined body |
-
1998
- 1998-02-20 JP JP10038874A patent/JPH11238342A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019081301A (en) * | 2017-10-31 | 2019-05-30 | 日産自動車株式会社 | Joined body and manufacturing method of joined body |
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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: 20050510 |