JPH0544234B2 - - Google Patents
Info
- Publication number
- JPH0544234B2 JPH0544234B2 JP63240469A JP24046988A JPH0544234B2 JP H0544234 B2 JPH0544234 B2 JP H0544234B2 JP 63240469 A JP63240469 A JP 63240469A JP 24046988 A JP24046988 A JP 24046988A JP H0544234 B2 JPH0544234 B2 JP H0544234B2
- Authority
- JP
- Japan
- Prior art keywords
- molding
- cabinet
- crt
- gas
- television receiver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000465 moulding Methods 0.000 claims description 24
- 238000000034 method Methods 0.000 claims description 16
- 238000001746 injection moulding Methods 0.000 claims description 4
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 description 16
- 239000007924 injection Substances 0.000 description 16
- 229920005989 resin Polymers 0.000 description 10
- 239000011347 resin Substances 0.000 description 10
- 238000010097 foam moulding Methods 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 241000567769 Isurus oxyrinchus Species 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
- B29C45/1704—Introducing an auxiliary fluid into the mould the fluid being introduced into the interior of the injected material which is still in a molten state, e.g. for producing hollow articles
Description
【発明の詳細な説明】
〓産業上の利用分野〓
本発明はテレビジヨン受像機の筐体の成形方法
に係り、とくにベズル一体型キヤビネツトまたは
ベズルに適用して好適な成形方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for molding a housing of a television receiver, and particularly to a molding method suitable for application to a bezzle-integrated cabinet or a bezzle.
〓発明の概要〓
溶融樹脂を金型内へ射出して成形を行なう射出
成形において、溶融樹脂の射出の途中で金型内に
高圧ガスを注入すると、成形体の内部にガスによ
つて空洞部が形成されるとともに、その近傍に効
率的に２次圧を加えることが可能になる。このよ
うなシンプレス成形の方法を用いるようにする
と、局部的なヒケの防止に効果を有することにな
る。そこでテレビジヨン受像機のベズル一体型キ
ヤビネツトまたはベズルにこれを適用し、少なく
ともCRTの保持部に高圧ガスを射出して２次圧
を加えることにより、CRT取付け部を強固な構
造にしたものである。〓Summary of the invention〓 In injection molding, in which molten resin is injected into a mold to perform molding, when high-pressure gas is injected into the mold during injection of the molten resin, the gas creates a cavity inside the molded product. is formed, and it becomes possible to efficiently apply secondary pressure to the vicinity thereof. If such a thin press molding method is used, it will be effective in preventing local sink marks. Therefore, this system was applied to the bezzle-integrated cabinet or bezel of a television receiver, and by injecting high-pressure gas into at least the CRT holding part to apply secondary pressure, the CRT mounting part was made to have a strong structure. .
〓従来の技術〓
テレビジヨン受像機はそのキヤビネツト内に
CRTを収納するようにしたものであつて、CRT
のスクリーン面がベズルの開口部に臨むことにな
る。CRTのコーナの部分には取付け片が設けら
れており、この取付け片をキヤビネツトあるいは
ベズルの保持部に固定して取付けるようにしてい
る。CRTが大型になるとその重量も大きくなる
ために、CRTの取付け部に強固な構造を採用す
る必要がある。そこで成形体から成る独立のブラ
ケツトを用意しておき、このブラケツトをキヤビ
ネツトのコーナの部分に取付けるようにしてい
る。別の方法としては低発泡成形を行なうことに
より、保持部の肉厚を高めるようにしている。〓Conventional technology〓 A television receiver is installed in its cabinet.
It is designed to house a CRT.
The screen surface of the screen faces the opening of the bezel. Attachment pieces are provided at the corners of the CRT, and these attachment pieces are fixed to the holder of the cabinet or bezel. As the CRT becomes larger, its weight also increases, so it is necessary to adopt a strong structure for the mounting part of the CRT. Therefore, an independent bracket made of a molded body is prepared and this bracket is attached to the corner of the cabinet. Another method is to increase the wall thickness of the holding portion by performing low-foaming molding.
〓発明が解決しようとする問題点〓
大型のCRTを取付けるために別部材から成る
成形体のブラケツトを用いるようにすると、部品
数が増加するばかりでなく、このブラケツトをキ
ヤビネツトに固定するための手段を必要とし、コ
ストも増大する。低発泡成形は、通常の樹脂とと
もに発泡材を含む樹脂を射出するものであるが、
その成形のサイクルが長く、このため形成の生産
性が悪くなる欠点がある。〓Problems to be solved by the invention〓 If a bracket made of a molded body made of separate members is used to mount a large CRT, not only the number of parts will increase, but also the means for fixing this bracket to the cabinet will be required. , which increases costs. Low-foam molding involves injecting resin containing foam material along with regular resin.
There is a drawback that the molding cycle is long, which reduces the productivity of the molding.
本発明はこのような問題点に鑑みてなされたも
のであつて、別部材から成るブラケツトを用いる
ことなく、また低発泡成形のような長い成形サイ
クルを必要とせず、しかもCRTの保持部に十分
な強度を持たせるようにしたテレビジヨン受像機
の筐体の成形方法を提供することを目的とするも
のである。 The present invention was made in view of these problems, and does not require the use of a bracket made of a separate member, does not require a long molding cycle like low-foam molding, and has a structure that is sufficient for the CRT holding part. It is an object of the present invention to provide a method for molding a casing of a television receiver that has a high strength.
〓問題点を解決するための手段〓
本発明は、CRTを保持する保持部を有するベ
ズル一体型キヤビネツトやベズル等の筐体を合成
樹脂の射出成形によつて成形するようにした方法
において、シンプレス成形法を用いるようにする
とともに、少なくともCRTの保持部の近傍に高
圧ガスを射出するようにしたものである。〓Means for Solving the Problems〓 The present invention provides a method for molding a bezzle-integrated cabinet having a holding portion for holding a CRT, a case such as a bezzle, etc. by injection molding of synthetic resin. In addition to using a press molding method, high-pressure gas is injected at least near the holding portion of the CRT.
〓作 用〓
従つて高圧ガスがCRTの保持部の近傍に射出
されることになり、このガス圧によつてCRTの
保持部に効果的に２次圧を加えてCRTの保持部
を強固な構造にすることが可能になる。〓Effect〓 Therefore, high pressure gas is injected near the CRT holding part, and this gas pressure effectively applies secondary pressure to the CRT holding part, making it strong. It becomes possible to create a structure.
〓実施例〓
第４図は本発明の一実施例に係る方法で成形さ
れたテレビジヨン受像機のキヤビネツト１０を示
すものであつて、このキヤビネツト１０はその前
端側にベズルを一体に備えており、ベズル一体型
キヤビネツトを構成している。そしてキヤビネツ
ト１０の前端側のベズルの部分には矩形の開口１
１が形成されており、この開口１１にスクリーン
面が臨むようにCRT１２がキヤビネツト１０内
に収納されるようになつている。Embodiment FIG. 4 shows a television receiver cabinet 10 molded by a method according to an embodiment of the present invention, and this cabinet 10 is integrally equipped with a bezel on its front end side. , constituting a bezel-integrated cabinet. There is a rectangular opening 1 in the bezel part on the front end side of the cabinet 10.
1 is formed, and the CRT 12 is housed in the cabinet 10 so that the screen surface faces the opening 11.
CRT１２はその４つのコーナの部分にそれぞ
れ取付け片１３を備えており、これらの取付け片
１３が第１図および第２図に示すように、キヤビ
ネツト１０の４つのコーナの部分に形成されてい
る止めボス１４にタツピングねじによつて固定さ
れるようになつている。止めボス１４はリブ１５
によつて補強されるとともに、キヤビネツト１０
の４つのコーナの厚肉部１６に設けられるように
なつている。 The CRT 12 is provided with mounting pieces 13 at each of its four corners, and these mounting pieces 13 connect to the stops formed at the four corners of the cabinet 10, as shown in FIGS. It is designed to be fixed to the boss 14 with a tapping screw. The stop boss 14 is a rib 15
The cabinet 10 is reinforced by
It is designed to be provided at the thick-walled portions 16 at the four corners of.
このようなベズル一体型キヤビネツト１０は第
２図および第３図に示すように、金型１９，２０
によつてシンプレス成形の方法で成形されるよう
になつている。金型１９，２０の樹脂を射出する
ゲート２１の部分には第３図に示すように射出シ
リンダ２２の口金の部分が接続されるようになつ
ている。射出シリンダ２２内にはスクリユ２３が
保持されており、スクリユ２３によつて溶融樹脂
２４を押出すようにしている。 As shown in FIGS. 2 and 3, such a bezel-integrated cabinet 10 has molds 19 and 20.
It is now molded using the thin press molding method. As shown in FIG. 3, a mouthpiece of an injection cylinder 22 is connected to a gate 21 for injecting the resin of the molds 19 and 20. As shown in FIG. A screw 23 is held within the injection cylinder 22, and the screw 23 extrudes molten resin 24.
また射出シリンダ２２にはガス圧入シリンダ２
５が接続されるようになつている。ガス圧入シリ
ンダ２５にはピストン２６が摺動可能に保持され
ている。このシリンダ２５にはさらに弁２７を介
してガス供給源が接続されるようになつている。
またガス圧入シリンダ２５の吐出側は射出シリン
ダ２２の吐出口に保持されているトーピード２８
と接続されるようになつている。そしてトーピー
ド２８の先端側にガス射出口２９が取付けられて
いる。なおキヤビネツト１０を成形するための金
型には第１図および第２図に示すように４個のゲ
ート２１がそのコーナの部分に設けられている。 In addition, the injection cylinder 22 includes a gas injection cylinder 2.
5 is now connected. A piston 26 is slidably held in the gas injection cylinder 25 . This cylinder 25 is further connected to a gas supply source via a valve 27.
Further, the discharge side of the gas injection cylinder 25 has a torpedo 28 held at the discharge port of the injection cylinder 22.
It is becoming connected to A gas injection port 29 is attached to the tip side of the torpedo 28. The mold for molding the cabinet 10 is provided with four gates 21 at its corners, as shown in FIGS. 1 and 2.
以上のような構成において、第３図に示す射出
シリンダ２２から溶融樹脂２４がゲート２１を通
つて金型１９，２０のキヤビテイに射出される。
そして溶融樹脂２４の射出にやや遅れて、ピスト
ン２６によつてガス圧入シリンダ２５内のガスを
圧縮し、このガスをトーピード２８およびガス射
出口２９を通してキヤビテイ内に射出する。シリ
ンダ２５によるガス圧の供給は溶融樹脂２４の加
圧を終了した後も継続する。このようにして成形
されるキヤビネツト１０のゲート２１の近傍であ
つてとくに肉厚が厚い厚肉部１６には、注入ガス
によつて空間３２が形成される。そしてこの空間
３２を通して厚肉部１６にガス圧によつて２次圧
が加えられるために、キヤビネツト１０のコーナ
の部分においては、内部までロスのない圧力が加
えられることになる。 In the above configuration, molten resin 24 is injected from the injection cylinder 22 shown in FIG. 3 into the cavities of the molds 19 and 20 through the gate 21.
Then, a little later than the injection of the molten resin 24, the gas in the gas injection cylinder 25 is compressed by the piston 26, and this gas is injected into the cavity through the torpedo 28 and the gas injection port 29. The supply of gas pressure by the cylinder 25 continues even after the pressurization of the molten resin 24 is finished. A space 32 is formed by the injected gas in the thick portion 16 of the cabinet 10 formed in this way, which is particularly thick near the gate 21. Since secondary pressure is applied by gas pressure to the thick walled portion 16 through this space 32, pressure without loss is applied to the interior of the corner portion of the cabinet 10.
このようなシンプレス成形によつて成形された
キヤビネツト１０は、とくにそのコーナの厚肉部
１６がガスによつて２次圧が加えられるために、
ヒケを防止することが可能になるばかりでなく、
ガス圧によつて太い止めボス１４を成形すること
が可能になる。すなわち従来は直径５mmのタツピ
ングねじをねじ込むための止めボスしか成形でき
なかつたのが、ガスによる２次圧を加えることに
よつて、直経が７mmのタツピングねじをねじ込む
ボス１４を成形することが可能になる。 The cabinet 10 formed by such thin-press molding has secondary pressure applied by the gas, especially to the thick wall portions 16 at the corners.
Not only is it possible to prevent sink marks, but
The gas pressure makes it possible to form a thick stop boss 14. In other words, conventionally it was only possible to form a stop boss for screwing in a tapping screw with a diameter of 5 mm, but by applying secondary pressure from gas, it is now possible to form a boss 14 for screwing in a tapping screw with a diameter of 7 mm. It becomes possible.
またコーナの厚肉部１６に空間３２を成形する
とともに、この空間３２を通して２次圧を加える
ことによつて、コーナの部分の強度が向上し、こ
れによつて止めボス１４を介して重量のある
CRT１２を確実に保持することが可能になる。
従つて通常の成形品程度の肉厚であつて、しかも
CRT１２の保持部１４の近傍を強固に設計する
ことが可能になる。まこのようなシンプレス成形
を採用することによつて、低発泡成形のようなサ
イクルタイムが長くなることがなく、大型の
CRT１２を直接取付け固定するキヤビネツト１
０を効率的に成形できるようになる。 In addition, by forming a space 32 in the thick corner part 16 and applying secondary pressure through this space 32, the strength of the corner part is improved. be
It becomes possible to hold the CRT 12 securely.
Therefore, it has a wall thickness comparable to that of a normal molded product, and
It becomes possible to strongly design the vicinity of the holding portion 14 of the CRT 12. By using Mako's thin press molding, the cycle time is not as long as with low foam molding, and it is suitable for large-scale molding.
Cabinet 1 where CRT12 is directly installed and fixed
0 can be molded efficiently.
〓応用例〓
以上本発明を図示の一実施例につき述べたが、
本発明は上記実施例によつて限定されることな
く、本発明の技術的思想に基いて各種の変更が可
能である。例えば上記実施例はベズル一体型キヤ
ビネツトの成形方法に関するものであるが、本発
明はCRT保持部を有するベズルの成形方法にも
適用可能である。〓Application Example〓 The present invention has been described above with reference to an illustrated embodiment.
The present invention is not limited to the above embodiments, and various modifications can be made based on the technical idea of the present invention. For example, although the above embodiment relates to a method for molding a bezel-integrated cabinet, the present invention is also applicable to a method for molding a bezzle having a CRT holding portion.
〓発明の効果〓
以上のように本発明は、シンプレス成形の方法
を用いるようにし、少なくともCRTの保持部の
近傍に高圧のガスを射出するようにしたものであ
る。従つて短い成形サイクルでしかも通常の成形
品と同一程度の板厚でCRTの保持部のみを強固
な構造としたテレビジヨン受像機の筐体を提供す
ることが可能になる。Effects of the Invention As described above, the present invention uses the thin press molding method and injects high-pressure gas at least in the vicinity of the holding portion of the CRT. Therefore, it is possible to provide a television receiver casing in which only the CRT holding part has a strong structure, with a short molding cycle, and with the same plate thickness as a normal molded product.
第１図は本発明の一実施例に係るキヤビネツト
の縦断面図、第２図は第１図における〜線断
面図、第３図は樹脂の射出装置の要部断面図、第
４図は成型されたキヤビネツトへのCRTの取付
けを示す外観斜視図である。また図面中の主要な
部分の名称はつぎの通りである。
１０……キヤビネツト、１２……CRT、１３
……取付け片、１４……止めボス、１６……厚肉
部、２２……射出シリンダ、２５……ガス圧入シ
リンダ、３２……空間。
Fig. 1 is a longitudinal cross-sectional view of a cabinet according to an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along the line ~ in Fig. 1, Fig. 3 is a cross-sectional view of the main part of a resin injection device, and Fig. 4 is a molding FIG. 3 is an external perspective view showing how the CRT is installed in the cabinet. The names of the main parts in the drawings are as follows. 10...cabinet, 12...CRT, 13
... Attachment piece, 14 ... Stopping boss, 16 ... Thick wall part, 22 ... Injection cylinder, 25 ... Gas pressure injection cylinder, 32 ... Space.
Claims (1)
樹脂の射出成形によつて成形するようにした方法
において、シンプレス成形法を用いるようにする
とともに、少なくともCRTの保持部に高圧ガス
を射出するようにしたことを特徴とするテレビジ
ヨン受像機の筐体の成形方法。 ２ 前記筐体がベズル一体型キヤビネツトまたは
ベズルであることを特徴とする請求項第１項に記
載のテレビジヨン受像機のキヤビネツトの成形方
法。[Claims] 1. In a method in which a housing having a holding portion for holding a CRT is molded by injection molding of synthetic resin, a thin press molding method is used, and at least the holding portion of the CRT is molded by injection molding. A method for molding a casing of a television receiver, characterized in that high pressure gas is injected into the casing of a television receiver. 2. The method for molding a cabinet for a television receiver according to claim 1, wherein the casing is a bezel-integrated cabinet or a bezzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24046988A JPH0287880A (en) | 1988-09-26 | 1988-09-26 | Forming of enclosure in television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24046988A JPH0287880A (en) | 1988-09-26 | 1988-09-26 | Forming of enclosure in television receiver |
Related Child Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26306694A Division JPH07178758A (en) | 1994-10-03 | 1994-10-03 | Method of forming television cabinet |
| JP6263068A Division JP2896094B2 (en) | 1994-10-03 | 1994-10-03 | Television receiver housing |
| JP6263067A Division JP2896093B2 (en) | 1994-10-03 | 1994-10-03 | Molding method for housing of television receiver |
| JP6263069A Division JP2896095B2 (en) | 1994-10-03 | 1994-10-03 | Television receiver housing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0287880A JPH0287880A (en) | 1990-03-28 |
| JPH0544234B2 true JPH0544234B2 (en) | 1993-07-05 |
Family
ID=17059977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24046988A Granted JPH0287880A (en) | 1988-09-26 | 1988-09-26 | Forming of enclosure in television receiver |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0287880A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07262Y2 (en) * | 1990-09-06 | 1995-01-11 | 積水化学工業株式会社 | Injection mold |
| JP3345038B2 (en) * | 1991-01-28 | 2002-11-18 | 松下電器産業株式会社 | Hollow structural members |
| JPH07178758A (en) * | 1994-10-03 | 1995-07-18 | Sony Corp | Method of forming television cabinet |
| JPH0943929A (en) * | 1995-05-19 | 1997-02-14 | Matsushita Electric Ind Co Ltd | Electrophotography copying device |
| JP4356169B2 (en) * | 2000-01-31 | 2009-11-04 | パナソニック株式会社 | Video equipment, holding device, and manufacturing method of holding device |
| JP3086056U (en) * | 2001-11-15 | 2002-05-31 | 船井電機株式会社 | Televisions, television cabinets and molds for molding television cabinets |
| EP2502668B1 (en) * | 2009-11-18 | 2015-07-01 | Sumitomo Electric Industries, Ltd. | Gas decomposition apparatus |
| CN102336454A (en) * | 2010-08-26 | 2012-02-01 | 隆润新技术发展有限公司 | Application of catalyzed inner electrolysis method in organosilicone waste water treatment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714968A (en) * | 1980-07-02 | 1982-01-26 | Hitachi Ltd | Process and control system for information at point of sales time |
-
1988
- 1988-09-26 JP JP24046988A patent/JPH0287880A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714968A (en) * | 1980-07-02 | 1982-01-26 | Hitachi Ltd | Process and control system for information at point of sales time |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0287880A (en) | 1990-03-28 |
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