JP3521083B2 - Pressurizing device for sheet pressurized object - Google Patents
Pressurizing device for sheet pressurized objectInfo
- Publication number
- JP3521083B2 JP3521083B2 JP2002216904A JP2002216904A JP3521083B2 JP 3521083 B2 JP3521083 B2 JP 3521083B2 JP 2002216904 A JP2002216904 A JP 2002216904A JP 2002216904 A JP2002216904 A JP 2002216904A JP 3521083 B2 JP3521083 B2 JP 3521083B2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- pressed
- elastic
- laminated sheet
- elastic portion
- 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 - Fee Related
Links
- 238000003825 pressing Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 4
- 230000007423 decrease Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 description 6
- 239000003985 ceramic capacitor Substances 0.000 description 5
- 238000005520 cutting process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 239000011111 cardboard Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
Landscapes
- Press-Shaping Or Shaping Using Conveyers (AREA)
- Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば積層セラミ
ックコンデンサの製造に用いられる積層シートのような
シート状被加圧体を加圧する装置に関し、特に弾性部を
介してシート状被加圧体を加圧する装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for pressurizing a sheet-shaped object to be pressed such as a laminated sheet used for manufacturing a monolithic ceramic capacitor, and particularly to a sheet-shaped object to be pressed through an elastic portion. The present invention relates to a pressurizing device.
【０００２】[0002]
【従来の技術】例えば、チップ状の積層セラミックコン
デンサを製造するためには、加圧装置によって、多数の
電極を印刷等により設けたセラミックフィルムを重ね合
わせて成る積層シート（グリーンシート）を加圧、加熱
して一体化が行われ、その後、切断装置によって、積層
シートを切断してチップ化が行われている。これによ
り、積層セラミックコンデンサを得ることができる。2. Description of the Related Art For example, in order to manufacture a chip-shaped monolithic ceramic capacitor, a pressurizing device presses a laminated sheet (green sheet) formed by superposing ceramic films having a large number of electrodes provided by printing or the like. After heating and integration, the laminated sheet is cut into chips by a cutting device. Thereby, a monolithic ceramic capacitor can be obtained.
【０００３】このような従来の加圧装置１０は、図３に
示されているように、積層シート１を加圧するための加
圧プレート２を有する上金型３と、積層シート１を載置
する載置プレート４が取り付けられている下金型５と、
載置された積層シート１の縁部に切り込んでその端縁の
変形を抑制する刃部６が設けられているサイド型７とを
含んでいる。この加圧プレート２は、図４に示されてい
るように、弾性部８を有し、該弾性部８が収容凹所９に
収容されている。従って、上金型３の下動で加圧プレー
ト２を押し付けると、弾性部８により、積層シート１に
は均等な加圧力が付与される。As shown in FIG. 3, such a conventional pressing device 10 mounts the upper die 3 having a pressing plate 2 for pressing the laminated sheet 1 and the laminated sheet 1. A lower mold 5 to which a mounting plate 4 is attached,
It includes a side mold 7 provided with a blade portion 6 which is cut into the edge portion of the placed laminated sheet 1 to suppress the deformation of the edge thereof. As shown in FIG. 4, the pressure plate 2 has an elastic portion 8, and the elastic portion 8 is housed in the housing recess 9. Therefore, when the pressure plate 2 is pressed by the downward movement of the upper die 3, the elastic portion 8 applies a uniform pressing force to the laminated sheet 1.
【０００４】[0004]
【発明が解決しようとする課題】ところで、加圧プレー
ト２は金属材料で形成されているので、下端部２ａが積
層シートや載置プレート４に当接することで、下方への
移動が規制される。このため、弾性部８の下動も規制さ
れるので、積層シート１が例えば、0.6mmと非常に薄い
場合、積層シート１に充分な押圧力を与えることができ
ない問題があった。一方、この問題を解消するために、
例えば、弾性部８を収容凹所９から突出させて設けるこ
とが考えられる。By the way, since the pressure plate 2 is made of a metal material, the downward movement of the pressure plate 2 is restricted by contacting the lower end portion 2a with the laminated sheet or the mounting plate 4. . For this reason, the downward movement of the elastic portion 8 is also restricted, so that when the laminated sheet 1 is very thin, for example, 0.6 mm, there is a problem that sufficient pressing force cannot be applied to the laminated sheet 1. On the other hand, in order to solve this problem,
For example, it is conceivable that the elastic portion 8 is provided so as to project from the accommodation recess 9.
【０００５】しかし、弾性部８が収容凹所９から突出し
ていると、弾性部８と刃部６との間に隙間が存在するた
め、図５に示されているように、この弾性部８の縁部が
膨出し、積層シート１の端部に厚さ方向ではなく、斜め
方向の押圧力を与える。この結果、積層シート１の端部
で電極間にずれが生じ、歩留まりが低下する欠点があ
る。However, when the elastic portion 8 protrudes from the accommodating recess 9, there is a gap between the elastic portion 8 and the blade portion 6, so that the elastic portion 8 as shown in FIG. Swells, and the pressing force is applied to the end portion of the laminated sheet 1 not in the thickness direction but in an oblique direction. As a result, there is a disadvantage that the electrodes are misaligned at the ends of the laminated sheet 1 and the yield is reduced.
【０００６】従って、厚さの小さい積層シートであって
も充分な押圧力を与えると共に、歩留まりの優れた加圧
装置が望まれている。Therefore, there is a demand for a pressurizing device which gives a sufficient pressing force even with a laminated sheet having a small thickness and has an excellent yield.
【０００７】[0007]
【課題を解決するための手段】〈構成〉本発明に係るシ
ート状被加圧体の加圧装置は、シート状被加圧体を加圧
する弾性部と、該弾性部の縁部を囲む枠部とを有する加
圧ブロックを備える加圧装置であって、枠部は、弾性部
よりも高い硬度を有する弾性部材からなることを特徴と
する。<Structure> A pressurizing device for a sheet-shaped object to be pressed according to the present invention is provided with an elastic portion for pressing the sheet-shaped object and a frame surrounding an edge of the elastic portion. A frame is formed of an elastic member having a hardness higher than that of the elastic part.
【０００８】〈作用〉本発明に係るシート状被加圧体の
加圧装置では、加圧ブロックの枠部は、弾性部よりも高
い硬度を有する弾性部材で形成され、弾性部の縁部を囲
んでいる。このため、シート状被加圧体の加圧時に、枠
部は、弾性部の外側方向への膨出変形を抑制すると共
に、加圧ブロックの下動時に、弾性変形して加圧ブロッ
クの更なる下動を許す。これにより、厚さの小さいシー
ト状被加圧体であっても、弾性部により、均等且つ充分
な押圧力を与えることができる。<Operation> In the pressing device for a sheet-shaped object to be pressed according to the present invention, the frame portion of the pressure block is formed of an elastic member having a hardness higher than that of the elastic portion, and the edge portion of the elastic portion is Surrounded. Therefore, when the sheet-shaped body to be pressed is pressed, the frame portion suppresses the outward bulging deformation of the elastic portion, and when the pressure block is moved downward, the frame portion is elastically deformed and the pressure block is further updated. Allow a downward movement. Accordingly, even if the sheet-shaped body to be pressed has a small thickness, the elastic portion can apply a uniform and sufficient pressing force.
【０００９】前記シート状被加圧体として、多数のセラ
ミックフィルムからなる積層シートを用いることができ
る。この場合、弾性部を、例えばショアＡ硬度が６０〜
８０であるゴム材料で形成し、枠部を、ショアＡ硬度が
７０〜９０であるゴム材料で形成することができる。こ
れにより、この積層シートを切断して得たチップ状積層
セラミックコンデンサを歩留まりよく製造することがで
きる。As the sheet-shaped body to be pressed, a laminated sheet composed of a large number of ceramic films can be used. In this case, the elastic portion may have a Shore A hardness of 60 to
It can be formed of a rubber material having a hardness of 80, and the frame portion can be formed of a rubber material having a Shore A hardness of 70 to 90. As a result, chip-shaped laminated ceramic capacitors obtained by cutting this laminated sheet can be manufactured with high yield.
【００１０】枠部の端部を、その肉厚が加圧方向に沿っ
て漸減する形状で形成することが望ましい。これによ
り、枠部が押し付けられた時に、その端部が弾性部側へ
変形せず、外側へ変形するので、弾性部を変形させずに
シート状被加圧体に押し付けることが可能である。It is desirable that the end portion of the frame portion is formed in a shape in which the wall thickness gradually decreases along the pressing direction. As a result, when the frame portion is pressed, the end portion is not deformed toward the elastic portion side but is deformed outward, so that the elastic portion can be pressed against the sheet-shaped body to be pressed without being deformed.
【００１１】[0011]
【発明の実施の形態】以下、図面を参照して、本発明の
実施形態を詳細に説明する。図２は、本発明に係る積層
シートの加圧装置の断面図である。この加圧装置２０
は、上、下金型２１及び２２とを備えている。上金型２
１は、取付板２４と、該取付板２４の下面に設けられて
いる断熱部２５と、該断熱部２５の下面に取り付けられ
ている熱板２６とを備えている。熱板２６には、複数の
カートリッジ式のヒータ２７が埋設されている。尚、カ
ートリッジヒータに代えて、スペースヒータや鋳込みヒ
ータなどを用いることができる。DETAILED DESCRIPTION OF THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 is a cross-sectional view of a laminated sheet pressing device according to the present invention. This pressurizing device 20
Includes upper and lower molds 21 and 22. Upper mold 2
1 includes a mounting plate 24, a heat insulating portion 25 provided on the lower surface of the mounting plate 24, and a heat plate 26 mounted on the lower surface of the heat insulating portion 25. A plurality of cartridge type heaters 27 are embedded in the heating plate 26. A space heater, a casting heater, or the like can be used instead of the cartridge heater.
【００１２】この熱板２６の下面には、取付プレート３
５を介して固定ボルト２９により取り付けられている加
圧ブロック３０と、固定ボルト３１によって取り付けら
れている枠状のサイド型３２と、取付ボルト３３によっ
て移動可能に取り付けられ且つコイルスプリング４９に
よって押圧される枠状の真空保持カバー３４とが設けら
れている。On the lower surface of the heating plate 26, the mounting plate 3
5, a pressure block 30 attached by a fixing bolt 29, a frame-shaped side die 32 attached by a fixing bolt 31, a movably attached by an attaching bolt 33, and pressed by a coil spring 49. And a frame-shaped vacuum holding cover 34.
【００１３】図１は、本発明に係る加圧装置２０の加圧
ブロック３０を部分的に示す断面図である。加圧ブロッ
ク３０は、図１に示されているように、矩形状の凹所３
６ａを有する本体３６と、該本体３６の凹所３６ａに嵌
入され且つボルト３７によって固定されている固定金具
３８と、凹所３６ａに入り込み、固定金具３８と凹所３
６ａの内側面と接着されている枠部３９と、該枠部３９
に接着的に囲まれ、本体３６の下面に接着されている弾
性部４０とを備えている。尚、本体３６、固定金具３
８、枠部３９及び弾性部４０の相互間の接着は、枠部３
９及び弾性部４０の加硫接着によって実現させてもよ
く、両面テープによって実現させてもよい。FIG. 1 is a sectional view partially showing a pressure block 30 of a pressure device 20 according to the present invention. The pressure block 30 has a rectangular recess 3 as shown in FIG.
6a, a fixing metal fitting 38 that is fitted into the recess 36a of the main body 36 and is fixed by a bolt 37, and a fixing metal fitting 38 and the recess 3 that enter the recess 36a.
A frame portion 39 adhered to the inner surface of 6a, and the frame portion 39
And an elastic portion 40 adhered to the lower surface of the main body 36. In addition, the main body 36, the fixing bracket 3
8, the frame portion 39 and the elastic portion 40 are bonded to each other by the frame portion 3
It may be realized by vulcanizing and adhering 9 and the elastic portion 40, or may be realized by a double-sided tape.
【００１４】枠部３９は、弾性部４０の縁部に接着され
ている端部３９ａを有する。この端部３９ａは、外側に
傾斜面を有している。これにより、その肉厚は、加圧方
向Ａに沿って漸減している。本実施例において、弾性部
４０は、ショアＡ硬度が６５のゴム材から形成され、枠
部３９は、ショアＡ硬度が８０のゴム材から形成されて
いる。The frame portion 39 has an end portion 39a bonded to the edge portion of the elastic portion 40. The end 39a has an inclined surface on the outside. As a result, the wall thickness gradually decreases along the pressing direction A. In this embodiment, the elastic portion 40 is made of a rubber material having a Shore A hardness of 65, and the frame portion 39 is made of a rubber material having a Shore A hardness of 80.
【００１５】また、下金型２２は、取付板４１、断熱板
４２及び熱板４３を備えている。熱板４３には複数のカ
ートリッジ式ヒータ４４が埋設されている。また、熱板
４３には、積層シート４５を配置するセット板４６を浮
上させて支持する複数の支持ピン４７が突出可能に埋設
されている。一方、各支持ピン４７の直上にはセット板
４６を挟持するためのクランプピン４８が位置し、各ク
ランプピン４８はサイド型３２に取付けられている。上
記積層シート４５は、多数の電極が印刷されているセラ
ミックフィルムが整列して積層され、例えば、0.4〜0.6
mmの厚さに形成されている。The lower mold 22 is equipped with a mounting plate 41, a heat insulating plate 42 and a heat plate 43. A plurality of cartridge type heaters 44 are embedded in the heating plate 43. Further, in the heat plate 43, a plurality of support pins 47 that float and support the set plate 46 on which the laminated sheet 45 is arranged are embedded so as to project. On the other hand, a clamp pin 48 for sandwiching the set plate 46 is located directly above each support pin 47, and each clamp pin 48 is attached to the side die 32. The laminated sheet 45 is formed by arranging and laminating ceramic films on which a large number of electrodes are printed.
It is formed with a thickness of mm.
【００１６】次に、本発明の加圧装置の動作を説明す
る。先ず、上金型２１と下金型２２との各ヒータ２７，
４４を作動させ、熱板２６，４３を予め加熱する。次
に、上金型２１の取付板２４が図示しない下動機構によ
り下動し、上金型２１の真空保持カバー３４を下金型２
２の熱板４３に当接させる。この当接時には、真空保持
カバー３４下部のＯリング５０及びサイド型３２側部の
Ｏリング５１により、上金型２１及び下金型２２間の気
密が保持されている。この状態で真空ポンプを作動さ
せ、上金型２１と下金型２２間で真空引きする。次い
で、取付板２４を更に下動し、各クランプピン４８によ
りセット板４６を押圧しながら各支持ピン４７を後退さ
せ、セット板４６を位置決め固定する。Next, the operation of the pressure device of the present invention will be described. First, the heaters 27 of the upper mold 21 and the lower mold 22,
44 is actuated to preheat the hot plates 26, 43. Next, the mounting plate 24 of the upper mold 21 is moved down by a lowering mechanism (not shown), and the vacuum holding cover 34 of the upper mold 21 is moved to the lower mold 2.
The second heating plate 43 is brought into contact with the second heating plate 43. At the time of this contact, the airtightness between the upper mold 21 and the lower mold 22 is maintained by the O-ring 50 under the vacuum holding cover 34 and the O-ring 51 on the side of the side mold 32. In this state, the vacuum pump is operated to draw a vacuum between the upper mold 21 and the lower mold 22. Next, the mounting plate 24 is further moved downward, the support pins 47 are retracted while pressing the set plate 46 by the clamp pins 48, and the set plate 46 is positioned and fixed.
【００１７】取付板２４を更に下動し、弾性部４０を積
層シート４５上に押し付ける。The mounting plate 24 is further moved downward to press the elastic portion 40 onto the laminated sheet 45.
【００１８】ところで、上記したように、加圧ブロック
３０の弾性部４０の縁部が枠部３９に接着し、囲まれて
いる。また、この枠部３９は、変形可能なゴム材から形
成されている。これにより、積層シート４５の加圧時
に、枠部３９は、弾性部４０の外方への膨出を抑制する
と共に、セット板４６に当接して押し付けられても、自
己変形して加圧ブロック３０の更なる下動を許すので、
積層シート４５の厚さが0.6mm以下であっても、それに
充分な押圧力を与えることができる。更に、枠部３９の
端部３９ａが外側に傾斜面を有しているので、枠部３９
が変形時に、弾性部４０側へ変形せず、傾斜面側が膨ら
んで変形する。これにより、弾性部４０の縁部を変形さ
せずに、積層シート４５の全面に厚さ方向の押圧力のみ
を均等に与えることができる。このように、積層シート
４５に均等且つ充分な押圧力を与えるので、所望の積層
シート４５を得ることができる。従って、この積層シー
トの切断によって、積層セラミックコンデンサを歩留ま
りよく製造することができる。By the way, as described above, the edge portion of the elastic portion 40 of the pressure block 30 is adhered to and surrounded by the frame portion 39. The frame 39 is made of a deformable rubber material. As a result, when the laminated sheet 45 is pressed, the frame portion 39 suppresses outward expansion of the elastic portion 40, and even when pressed against the set plate 46, the frame portion 39 self-deforms and the pressure block. Allowing 30 further moves,
Even if the thickness of the laminated sheet 45 is 0.6 mm or less, sufficient pressing force can be applied to it. Furthermore, since the end portion 39a of the frame portion 39 has an inclined surface on the outside, the frame portion 39
When is deformed, the elastic portion 40 does not deform, but the inclined surface side swells and deforms. Thereby, only the pressing force in the thickness direction can be uniformly applied to the entire surface of the laminated sheet 45 without deforming the edge portion of the elastic portion 40. In this way, since a uniform and sufficient pressing force is applied to the laminated sheet 45, the desired laminated sheet 45 can be obtained. Therefore, by cutting this laminated sheet, a laminated ceramic capacitor can be manufactured with a high yield.
【００１９】尚、シート状被加圧体として、例えばプリ
ント基板やＩＣカード基板、該基板上に配置されるＩＣ
チップ及びラミネートするフィルムで構成することがで
きる。この場合には、加圧装置の弾性部４０をショアＡ
硬度が１０以下、例えば５のゴム材料で形成し、枠部３
９をショアＡ硬度が３０〜４０のゴム材料で形成するこ
とが望ましい。これにより、フィルムの加圧時に空気溜
まりを発生させずにラミネートを行うことができる。As the sheet-shaped body to be pressed, for example, a printed circuit board, an IC card board, or an IC arranged on the board.
It can be composed of chips and films to be laminated. In this case, the elastic portion 40 of the pressurizing device is attached to the shore A.
The frame portion 3 is made of a rubber material having a hardness of 10 or less, for example, 5
9 is preferably made of a rubber material having a Shore A hardness of 30 to 40. As a result, it is possible to perform lamination without generating air pockets when the film is pressed.
【図１】本発明に係る加圧ブロックを示す断面図であ
る。FIG. 1 is a sectional view showing a pressure block according to the present invention.
【図２】本発明に係る加圧装置の断面図である。FIG. 2 is a cross-sectional view of a pressure device according to the present invention.
【図３】従来の加圧装置を示す断面図である。FIG. 3 is a cross-sectional view showing a conventional pressure device.
【図４】従来の加圧プレートを示す断面図である。FIG. 4 is a cross-sectional view showing a conventional pressure plate.
【図５】従来の加圧プレートを示す断面図である。FIG. 5 is a cross-sectional view showing a conventional pressure plate.
２０ 加圧装置 ３０ 加圧ブロック ３９ 枠部 ４０ 弾性部 ４５ 積層シート（シート状被加圧体） 20 Pressurizing device 30 pressure block 39 frame 40 Elastic part 45 Laminated sheet (Sheet-like body to be pressed)
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B28B 3/02 B28B 11/00 H01G 4/30 ─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. 7 , DB name) B28B 3/02 B28B 11/00 H01G 4/30
Claims (3)
該弾性部の縁部を囲む枠部とを有する加圧ブロックを備
える加圧装置であって、 前記枠部は、前記弾性部よりも高い硬度を有する弾性部
材からなることを特徴とするシート状被加圧体の加圧装
置。1. An elastic portion for pressing a sheet-shaped body to be pressed,
A pressurizing device comprising a pressurizing block having a frame part surrounding an edge part of the elastic part, wherein the frame part is made of an elastic member having a hardness higher than that of the elastic part. Pressurizing device for the object to be pressed.
ックフィルムからなる積層シートであり、前記弾性部
は、ショアＡ硬度が６０〜８０であるゴム材料からな
り、前記枠部は、ショアＡ硬度が７０〜９０であるゴム
材料からなることを特徴とする請求項１に記載されたシ
ート状被加圧体の加圧装置。2. The sheet-shaped body to be pressed is a laminated sheet made of a large number of ceramic films, the elastic portion is made of a rubber material having a Shore A hardness of 60 to 80, and the frame portion is made of shore. The pressing device for a sheet-shaped object to be pressed according to claim 1, wherein the pressing device is made of a rubber material having an A hardness of 70 to 90.
置する端部は、その肉厚が加圧方向に沿って漸減する形
状を有することを特徴とする請求項１又は２に記載され
たシート状被加圧体の加圧装置。3. The end portion of the frame portion, which is located on the side of the sheet-shaped body to be pressed, has a shape in which the wall thickness gradually decreases along the pressing direction. For pressing a sheet-shaped object to be pressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002216904A JP3521083B2 (en) | 2002-07-25 | 2002-07-25 | Pressurizing device for sheet pressurized object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002216904A JP3521083B2 (en) | 2002-07-25 | 2002-07-25 | Pressurizing device for sheet pressurized object |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2004058324A JP2004058324A (en) | 2004-02-26 |
| JP3521083B2 true JP3521083B2 (en) | 2004-04-19 |
Family
ID=31938528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002216904A Expired - Fee Related JP3521083B2 (en) | 2002-07-25 | 2002-07-25 | Pressurizing device for sheet pressurized object |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3521083B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070113950A1 (en) * | 2005-11-22 | 2007-05-24 | International Business Machines Corporation | Method and apparatus for providing uniaxial load distribution for laminate layers of multilayer ceramic chip carriers |
| KR20230075963A (en) * | 2021-11-23 | 2023-05-31 | 주식회사 엘지에너지솔루션 | Secondary battery activation device and secondary battery manufacturing method using same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000127127A (en) | 1998-10-26 | 2000-05-09 | Matsushita Electric Works Ltd | Method and apparatus for press molding |
| JP2001353599A (en) | 2000-06-12 | 2001-12-25 | Nikkiso Co Ltd | Press forming equipment |
-
2002
- 2002-07-25 JP JP2002216904A patent/JP3521083B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000127127A (en) | 1998-10-26 | 2000-05-09 | Matsushita Electric Works Ltd | Method and apparatus for press molding |
| JP2001353599A (en) | 2000-06-12 | 2001-12-25 | Nikkiso Co Ltd | Press forming equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004058324A (en) | 2004-02-26 |
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