JPH0631770A - Box body with sealing structural part, mold and manufacture for which they are used - Google Patents
Box body with sealing structural part, mold and manufacture for which they are usedInfo
- Publication number
- JPH0631770A JPH0631770A JP4195154A JP19515492A JPH0631770A JP H0631770 A JPH0631770 A JP H0631770A JP 4195154 A JP4195154 A JP 4195154A JP 19515492 A JP19515492 A JP 19515492A JP H0631770 A JPH0631770 A JP H0631770A
- Authority
- JP
- Japan
- Prior art keywords
- seal structure
- mold
- movable
- casing
- housing
- 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.)
- Pending
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1635—Making multilayered or multicoloured articles using displaceable mould parts, e.g. retractable partition between adjacent mould cavities
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Closures For Containers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、シール構造部付き筐
体、成形用金型及びそれを用いた製造方法の改良に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing with a seal structure, a molding die and an improvement in a manufacturing method using the same.
【０００２】[0002]
【従来の技術】移動無線端末のように、内部に電子部品
を組込んだ薄肉筐体とそれを保護するカバーとの一体組
合わせ製品において、筐体とカバーとの合わせ面に弾性
体のシールを施こして密閉し、筐体内部への水滴などの
浸入を防止するシール構造部付きの筐体が知られてい
る。2. Description of the Related Art In a product such as a mobile radio terminal in which a thin casing having electronic parts incorporated therein and a cover for protecting the thin casing are integrally combined, an elastic body seal is provided on a mating surface between the casing and the cover. There is known a case with a seal structure part that applies water to seal the inside of the case and prevents the entry of water droplets into the inside of the case.
【０００３】この種の筐体の対カバーとの合わせ面の周
囲に弾性体のシールを機械的に施こす方法としてダブル
インジェクション射出成形法がある。以下、図13に示し
た工程図を用いてこの成形法の概要を説明する。同図
（ａ）は一次射出成形後の筐体の斜視図を、同図（ｂ）
はそのＡ−Ａ断面拡大図を、同図（ｃ）は二次射出成形
後の筐体の斜視図を、そして同図（ｄ）はそのＢ−Ｂ断
面拡大図をそれぞれ示している。There is a double injection injection molding method as a method of mechanically applying a seal of an elastic body around the mating surface of this type of casing with the opposite cover. The outline of this molding method will be described below with reference to the process chart shown in FIG. FIG. 1A is a perspective view of the housing after the primary injection molding, and FIG.
Is an enlarged view of the AA section, FIG. 7C is a perspective view of the housing after the secondary injection molding, and FIG. 7D is an enlarged view of the BB section.
【０００４】先ず、同図（ａ）に示すように、一次射出
でプラスチック部品本体、すなわち筐体26を成形し、シ
ール形成部30に同図（ｂ）に示すようなシール形成用溝
27を形成する。次に同図（ｃ）に示すように、一対の金
型のうちコア部をスライド方式又は回転方式で交換し、
二次射出で前記筐体の合わせ面に弾性シール28を成形、
一台の射出成形機でシール材を一体化したプラスチック
部品本体を得る。このダブルインジェクション射出成形
法の特徴は、一次成形品のプラスチック部品本体（筐
体）26が余熱をもっていて、まだ柔らかいうちにクサビ
型の突起部をもつ二次成形型で型閉めすることにより、
一次成形品のシール形成部30に設けた溝27を逆クサビ型
に変形させる。First, as shown in FIG. 1A, a plastic part body, that is, a housing 26 is molded by primary injection, and a seal forming groove as shown in FIG.
Forming 27. Next, as shown in FIG. 2C, the core part of the pair of molds is replaced by a slide system or a rotation system,
An elastic seal 28 is formed on the mating surface of the housing by secondary injection,
A single plastic injection molding machine is used to obtain a main body of plastic parts that integrates a sealing material. The feature of this double injection injection molding method is that the plastic part main body (housing) 26 of the primary molded product has residual heat and is closed by the secondary molding die having the wedge-shaped protrusion while it is still soft,
The groove 27 provided in the seal forming portion 30 of the primary molded product is transformed into an inverted wedge type.
【０００５】これにより同図（ｄ）に示したように二次
射出で得た弾性シール28は、しっかりグリップされ抜け
にくくなる。また、溝28の両側からクサビを打ち込むた
め弾性シール形成時にバリが発生しにくくなる。さらに
プラスチック部品本体と弾性シール部を連続して成形す
るので、成形サイクルが短縮できるなどの利点がある。
溝28の両側に形成されたクサビ型の溝29は、クサビ型の
突起部をもつ二次成形型で型閉めすることにより成形さ
れたものである。なお、この種のダブルインジェクショ
ン射出成形法に関するものとしては、例えばカタログ
「ＮＩＳＳＥＩダブルインジェクション」１９８８年
（Ｃatalog 8840）が挙げられる。As a result, as shown in FIG. 3D, the elastic seal 28 obtained by the secondary injection is firmly gripped and becomes hard to come off. Further, since wedges are driven in from both sides of the groove 28, burrs are less likely to occur when forming the elastic seal. Further, since the plastic component body and the elastic seal portion are continuously molded, there is an advantage that the molding cycle can be shortened.
The wedge-shaped grooves 29 formed on both sides of the groove 28 are formed by closing the mold with a secondary molding die having wedge-shaped protrusions. Incidentally, as for the double injection injection molding method of this kind, for example, there is a catalog “NISSEI double injection” 1988 (Catalog 8840).
【０００６】[0006]
【発明が解決しようとする課題】上記従来技術による製
造方法では、先ず、一次射出でプラスチック部品本体26
を成形後、二次射出で弾性シール28を形成するが、この
場合一対の金型のコア部を交換する必要があり、型開
き、コア部交換と工程数が増加し成形サイクル短縮の点
から問題があった。次にプラスチック部品本体26のシー
ル形成溝27に二次射出で弾性シール28を形成する場合、
弾性シール28を溝27から抜けにくくするために、突起部
のあるコア部で一次射出で得たシール形成溝27の両側近
傍を逆クサビ形に変形させるが、これは、プラスチック
部品本体26がまだ柔かいうちに行う必要があるため、コ
ア部の交換は、短時間ですばやく行なう必要があるなど
時間的な問題がある。さらに、プラスチック部品本体26
のシール形成部30の溝27を逆クサビ形に変形させるた
め、この面の幅寸法は、クサビを打ち込む面積を確保す
る必要性からシール幅寸法の約５倍必要となり、これ故
0．8〜2．0mmの薄肉部品には適用できないと云う問題が
ある。In the manufacturing method according to the prior art described above, first, the plastic part body 26 is formed by primary injection.
After molding, the elastic seal 28 is formed by secondary injection, but in this case it is necessary to replace the core parts of the pair of molds, mold opening, core part replacement and an increase in the number of steps and from the viewpoint of shortening the molding cycle. There was a problem. Next, when forming the elastic seal 28 in the seal forming groove 27 of the plastic component body 26 by secondary injection,
In order to make it difficult for the elastic seal 28 to come out of the groove 27, the vicinity of both sides of the seal forming groove 27 obtained by the primary injection is deformed into an inverted wedge shape in the core portion having the protruding portion, but this is because the plastic component body 26 is not yet formed. Since the core part needs to be replaced while it is soft, there is a time problem such that the core part needs to be replaced quickly and quickly. Furthermore, the plastic part body 26
Since the groove 27 of the seal forming portion 30 is deformed into an inverted wedge shape, the width dimension of this surface is required to be about 5 times the seal width dimension because of the need to secure an area for driving the wedge.
There is a problem that it cannot be applied to thin parts with a thickness of 0.8 to 2.0 mm.
【０００７】したがって、本発明の目的は上記従来の問
題点を解消することにあり、その第１の目的はシール部
が薄肉であっても充分なシール機能を有するシール構造
部付き筐体を、第２の目的はキャビティ部可変可能な一
対の金型により筐体成形とシール構造部形成を連続して
行な得る金型を、そして第３の目的はシール構造部形成
の加工工数を低減し得る製造方法を、それぞれ提供する
ことにある。Therefore, an object of the present invention is to eliminate the above-mentioned conventional problems, and a first object thereof is to provide a casing with a seal structure portion having a sufficient sealing function even if the seal portion is thin. A second purpose is to use a pair of molds with variable cavity parts to mold a casing and a seal structure continuously, and a third purpose is to reduce the number of steps for forming the seal structure. It is to provide each manufacturing method to obtain.
【０００８】[0008]
【課題を解決するための手段】上記目的を達成するため
に、本発明者等は薄肉部品の対カバーとの合わせ面の周
囲にシール構造部を形成すべく種々実験検討したとこ
ろ、以下に詳述するように実用性に優れたシール構造部
付き筐体を容易に実現することのできる知見を得た。す
なわち、厚さ0．8〜2．0mmの薄板より成る筐体に対カバ
ーとの合わせ面の周囲に弾性体のシール構造部を形成す
る方法において、型キャビティ部容積可変可能な一対の
金型のキャビティ部内に、先ず筐体成形用の第１樹脂を
射出して筐体を成形し、次に型に備え付けた油圧シリン
ダーにより可動板及び複数個の可動ピンを作動させて型
内にシール構造部形成用の空間部を確保し、その部分に
別の射出口より第２樹脂を射出し筐体とシール構造部と
を連続して形成するようにした。このシール構造部が筐
体より容易に離脱しないようにするために、シール構造
部は、継目がなく楕円形状であり、その一部分が筐体の
凹形溝部に密着しており、かつ前記凹形溝側壁の複数個
の***部に埋め込むようにした。In order to achieve the above object, the inventors of the present invention have conducted various experiments to form a seal structure portion around the mating surface of a thin-walled component with a cover, and the details are as follows. As described above, we have obtained the knowledge that it is possible to easily realize a housing with a seal structure that is excellent in practicality. That is, in a method of forming a seal structure part of an elastic body around a mating surface with a cover in a casing made of a thin plate having a thickness of 0.8 to 2.0 mm, a pair of molds with variable mold cavity volumes First, the first resin for molding the casing is injected into the cavity of the casing to mold the casing, and then the movable plate and the plurality of movable pins are operated by the hydraulic cylinder provided in the mold to seal the inside of the mold. A space for forming the part is secured, and the second resin is injected into the part through another injection port to continuously form the casing and the seal structure part. In order to prevent the seal structure from being easily separated from the housing, the seal structure is seamless and has an elliptical shape, a part of which is in close contact with the concave groove of the housing and It was designed to be embedded in a plurality of small holes on the side wall of the groove.
【０００９】本発明は、かかる知見に基づいてなされた
もので、その第１の目的は、カバーとの合わせ面の周囲
に弾性体のシール構造部を備えた筐体であって、前記シ
ール構造部の一部が合わせ面上に突出して盛り上がり、
他の一部が凹部溝内及び溝に直交して連通する複数の穴
内に連結して一体的に成形され埋め込まれて成るシール
構造部付き筐体により、達成される。そして、上記筐体
は剛性を有するエンジニアリングプラスチックスで、ま
た、上記シール構造部はゴム弾性をもつ合成ゴム類、も
しくは熱可塑性エラストマからなる弾性体で構成するこ
とが望ましい。The present invention has been made on the basis of such findings, and a first object thereof is a casing having an elastic seal structure portion around a mating surface with a cover, the seal structure Part of the part projects above the mating surface and rises,
This is achieved by a casing with a seal structure part, which is formed by being integrally molded with the other part connected to the recess groove and a plurality of holes that communicate with each other at right angles to the groove. It is desirable that the casing be made of rigid engineering plastics, and the seal structure be made of synthetic rubber having rubber elasticity or an elastic body made of thermoplastic elastomer.
【００１０】また、第２の目的は、固定型と、可動型
と、可動型と連動する可動型コア部と、これらの型で形
成されるキャビティ部内の容積を可変とする可動板及び
可動板に直交し、かつ当接可能に配設された複数個の可
動ピンと、前記キャビティ部内に筐体を成形するための
第１樹脂を射出する手段と、前記可動板及び可動ピンに
より形成された空間部にシール構造部を成形するための
第２樹脂を射出する手段とを備えて成り、同一型にてキ
ャビティ部内の容積を変更することにより一次射出成形
により筐体を成形し、二次射出成形によりシール構造部
を成形するようにして成るシール構造部付き筐体成形用
金型により、達成される。A second object is to provide a fixed die, a movable die, a movable die core portion interlocking with the movable die, and a movable plate and a movable plate for varying the volume of the cavity formed by these die. A plurality of movable pins that are arranged so as to be orthogonal to each other and are capable of abutting, a means for injecting a first resin for molding a housing in the cavity portion, and a space formed by the movable plate and the movable pins. And a means for injecting a second resin for molding the seal structure portion, and by changing the volume in the cavity portion in the same mold, the casing is molded by the primary injection molding and the secondary injection molding. This is achieved by a die for molding a casing with a seal structure, which is configured to mold the seal structure by.
【００１１】そして、好ましくは、上記キャビティ部内
の容積を可変とする可動板を、上記可動型と可動型コア
部との間に往復移動可能の状態で配設すると共に、可動
ピンを上記固定型側に前記可動板と直交して往復移動可
能の状態で配設して成り、これら両者は連動して、もし
くはそれぞれ独立に作動してキャビティ部内外に例えば
油圧シリンダーにより往復移動させ、一次射出成形時に
はキャビティ部内に、二次射出成形時にはキャビティ部
外に移動して成形するように構成することである。Preferably, a movable plate for varying the volume of the cavity portion is disposed between the movable die and the movable die core portion in a reciprocally movable state, and a movable pin is provided for the fixed die. Is arranged so as to be able to reciprocate orthogonally to the movable plate on the side, and these are operated in conjunction with each other or independently to reciprocate in and out of the cavity part by, for example, a hydraulic cylinder to perform primary injection molding. It is sometimes configured to move the inside of the cavity portion and to move to the outside of the cavity portion for the secondary injection molding.
【００１２】さらにまた、第３の目的は、対カバーとの
合わせ面の周囲に弾性体のシール構造部を備えた筐体の
製造方法であって、型キャビティ部の容積変更可能な一
対の金型のキャビティ部内に第１樹脂を射出して筐体を
成形する一次射出工程と、同一型内にて型キャビティ部
の容積変更手段として用いた可動板及び複数個の可動ピ
ンを型キャビティ部外に移動させて前記成形筐体に空間
部を形成し、その空間部に異なる射出口より第２樹脂を
射出してシール構造部を成形する二次射出工程とを有し
て成るシール構造部付き筐体の製造方法により、達成さ
れる。A third object of the present invention is a method of manufacturing a housing provided with an elastic sealing structure around a mating surface with a pair of covers, wherein a pair of gold mold cavities whose volume can be changed. The primary injection step of injecting the first resin into the cavity portion of the mold to mold the housing, and the movable plate and the plurality of movable pins used as the volume changing means of the mold cavity portion in the same mold are provided outside the mold cavity portion. A secondary injection step of forming a space portion in the molding housing by moving to another, and injecting a second resin from a different injection port into the space portion to form the seal structure portion. This is achieved by the manufacturing method of the housing.
【００１３】そして、好ましくは上記金型の可動板及び
複数個の可動ピンにより形成される空間部は、可動板に
より形成された凹型溝と、これに直交し連通して可動ピ
ンにより形成された穴とによって構成される。Preferably, the space formed by the movable plate of the mold and the plurality of movable pins is formed by the movable pin which is orthogonal to and communicates with the concave groove formed by the movable plate. And a hole.
【００１４】また、第１樹脂を射出して筐体を成形する
一次射出工程においては、高い剛性を有するエンジニア
リングプラスチックスを用いて射出成形し、第２樹脂を
射出してシール構造部を成形する二次射出工程において
は、ゴム弾性を有する合成ゴム類、もしくは熱可塑性エ
ラストマを用いて射出成形する工程とすることが望まし
い。さらにまた、筐体のシール構造を形成する部分の板
厚が0．8mm以上である時、シール構造部の幅を0．5mm以
上として薄肉部品に筐体のシール構造を形成する工程と
することが望ましい。Further, in the primary injection step of injecting the first resin to form the housing, the injection molding is performed using engineering plastic having high rigidity, and the second resin is injected to form the seal structure portion. In the secondary injection process, it is desirable to use a synthetic rubber having rubber elasticity or a thermoplastic elastomer for injection molding. Furthermore, when the thickness of the part forming the seal structure of the housing is 0.8 mm or more, the width of the seal structure part should be 0.5 mm or more to form the seal structure of the housing on the thin-walled component. Is desirable.
【００１５】[0015]
【作用】厚さ0．8〜2．0mmの薄肉筐体の対カバーとの合
わせ面の周囲に弾性体のシール構造部を形成するため
に、先ず筐体成形用の第１樹脂を一対の金型キャビティ
内に射出して筐体を成形し、その状態すなわち成形され
た筐体が金型内に残っている状態で、型に備え付けた複
数個の油圧シリンダーにより可動板及び複数個の可動ピ
ンを作動させて同一型内にシール構造部用の空間部を形
成し、その部分に第２樹脂を射出して筐体とシール構造
部とを連続して成形するようにした。シール構造部用の
空間部の形成は、先ず金型上部に取付けた油圧をシリン
ダーにより可動板を作動させて筐体の対カバーとの合わ
せ面に凹形溝部を形成し、次に金型の側面に取り付けた
油圧シリンダーにより複数個の可動ピンを作動させて前
記凹形溝部の側壁に複数個の***を形成するようにし
た。前記凹形溝部と前記複数個の***とは連結している
ため、シール構造部は、筐体の凹形溝部に密着し、かつ
凹形溝側壁の複数個の***部に埋込まれ一体的に成形さ
れているので筐体より離脱しない構造になる。また、シ
ール構造部形成用の第２樹脂は、ゴム弾性をもつ熱可塑
性エラストマとしたので、柔軟性がありシール機能を十
分に発揮できるものである。[Operation] In order to form the elastic seal structure around the mating surface of the thin casing having a thickness of 0.8 to 2.0 mm, the first resin for molding the casing is made into a pair. When the housing is molded by injection into the mold cavity, that is, in the state where the molded housing remains in the mold, the movable plate and the movable plate can be moved by the multiple hydraulic cylinders installed in the mold. The pin was operated to form a space for the seal structure in the same mold, and the second resin was injected into the space to continuously mold the housing and the seal structure. The space for the seal structure is formed by first activating the movable plate with the hydraulic pressure attached to the upper part of the mold to form a concave groove on the mating surface of the housing with the cover, and then forming the concave part of the mold. A plurality of movable pins are operated by a hydraulic cylinder attached to the side surface to form a plurality of small holes on the side wall of the concave groove. Since the concave groove portion and the plurality of small holes are connected to each other, the seal structure portion is closely attached to the concave groove portion of the housing and is embedded in the plurality of small hole portions of the concave groove side wall to be integrated. Since it is molded into, it has a structure that does not separate from the housing. Further, since the second resin for forming the seal structure portion is the thermoplastic elastomer having rubber elasticity, it has flexibility and can sufficiently exhibit the sealing function.
【００１６】[0016]
【実施例】以下、本発明の一実施例を図面により説明す
る。 〈実施例１〉この実施例は、移動無線端末を例にシール
構造部付き筐体とそれを製造する金型及びそれを用いた
製造方法について説明するものである。以下、図面にし
たがって順次説明する。 （１）シール構造部付き筐体の構成例：図１は移動無線
端末の外観斜視図、図２は図１の筐体部ａ−ａ´の断面
図、図３は図２のイ部の拡大図を、それぞれ示したもの
である。これらの図において、１は移動無線端末、２は
カバー、３はシール構造部付き筐体、４は弾性体からな
るシール構造部、５は筐体の外周部のカバー２との合わ
せ面の側壁に設けた複数個の***部で、この中にはシー
ル構造部４と一体的に形成された弾性体が埋設されてい
る。これら図２、図３から明らかなように移動無線端末
１の筐体３とカバー２との合わせ面の周囲には、筐体、
シール構造部の連続成形で得た弾性体のシール構造部４
が備えられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. <Example 1> In this example, a case with a seal structure, a mold for manufacturing the same, and a manufacturing method using the same will be described by taking a mobile wireless terminal as an example. Hereinafter, description will be sequentially made with reference to the drawings. (1) Configuration example of housing with seal structure part: FIG. 1 is an external perspective view of a mobile wireless terminal, FIG. 2 is a cross-sectional view of the housing part aa ′ in FIG. 1, and FIG. The enlarged views are respectively shown. In these figures, 1 is a mobile radio terminal, 2 is a cover, 3 is a casing with a seal structure, 4 is a seal structure made of an elastic body, and 5 is a side wall of the outer peripheral portion of the casing which is in contact with the cover 2. In the plurality of small holes provided in, the elastic body integrally formed with the seal structure 4 is embedded therein. As is clear from these FIGS. 2 and 3, the casing is provided around the mating surface between the casing 3 and the cover 2 of the mobile wireless terminal 1.
Elastic seal structure 4 obtained by continuous molding of seal structure 4
Is provided.
【００１７】この弾性体のシール構造部４は、図３から
明らかなように筐体３のカバー２との合わせ面の周囲に
配設された凹形溝部内にその一部は充填されて密着して
おり、他の一部は合わせ面上に突出してシールを構成し
ている。また、このシールは凹形溝側壁の複数個の***
５内にも一体的に成形され連結して埋込まれているので
容易に離脱しない構造になっている。As is apparent from FIG. 3, the seal structure portion 4 of the elastic body is partially filled in the concave groove portion provided around the mating surface of the housing 3 with the cover 2 and is in close contact with the concave groove portion. The other part protrudes above the mating surface to form a seal. Further, since this seal is also integrally formed in a plurality of small holes 5 formed in the side wall of the concave groove and is embedded by being connected, it has a structure which does not easily come off.
【００１８】（２）成形用金型の構成例：図４〜図６
は、本発明のシール構造部付き移動無線端末の筐体を製
造する一対の射出成形用金型の斜視図及び断面図であ
る。図４の斜視図において７は固定型、８は可動型、16
は筐体成形用の射出口、31はシール構造部成形用射出
口、33、34はそれぞれ射出口付きシリンダーである。図
５は、第１樹脂を射出して筐体３を成形している一次射
出の状態を示す図４のｂ−ｂ´断面図であり、図６は、
第１樹脂を射出して成形した筐体３を同一型内にインサ
ートし、カバー２の合わせ面に第２樹脂を射出してシー
ル構造部４を成形している二次射出の状態を示す同じく
図４のｂ−ｂ´断面図である。(2) Structural example of molding die: FIGS. 4 to 6
FIG. 2A is a perspective view and a cross-sectional view of a pair of injection molding dies for manufacturing a casing of a mobile wireless terminal with a seal structure portion of the present invention. In the perspective view of FIG. 4, 7 is a fixed type, 8 is a movable type, 16
Is an injection port for molding a casing, 31 is an injection port for molding a seal structure, and 33 and 34 are cylinders with injection ports. FIG. 5 is a sectional view taken along the line bb ′ of FIG. 4, showing a state of primary injection in which the first resin is injected to mold the housing 3.
The case 3 molded by injecting the first resin is inserted into the same mold, and the second resin is injected on the mating surface of the cover 2 to mold the seal structure portion 4. FIG. 5 is a sectional view taken along the line bb ′ of FIG. 4.
【００１９】図５において、７は固定型、６は可動型コ
ア部、８は可動型、10は可動板で、可動型８とは独立に
油圧シリンダ９により上下方向に作動し、一次射出成形
時にはキャビティ15内に突出し、二次射出成形のための
凹形溝部を形成する。13は固定型７側に設けられた複数
個の可動ピンで、油圧シリンダ12により左右方向に作動
し、一次射出成形時にはキャビティ15内に突出し、二次
射出成形のための凹形溝部に連通する***部５を形成す
る。15は第１樹脂を射出して筐体３を形成するキャビテ
ィ部、16は第１樹脂の射出口である。なお、35は、固定
板であり、可動型８と可動型コア部６との壁面で構成さ
れた空間に油圧シリンダ９を配設した後、可動型８と可
動型コア部６との端部をそれぞれ同一面上に固定する。In FIG. 5, 7 is a fixed die, 6 is a movable core portion, 8 is a movable die, and 10 is a movable plate, which is operated vertically by a hydraulic cylinder 9 independently of the movable die 8 for primary injection molding. Sometimes it projects into the cavity 15 to form a concave groove for secondary injection molding. Reference numeral 13 denotes a plurality of movable pins provided on the fixed mold 7 side, which are operated in the left and right directions by the hydraulic cylinder 12 so as to project into the cavity 15 during the primary injection molding and communicate with the concave groove portion for the secondary injection molding. The small hole portion 5 is formed. Reference numeral 15 is a cavity portion that injects the first resin to form the housing 3, and 16 is an injection port of the first resin. Reference numeral 35 denotes a fixed plate, and after disposing the hydraulic cylinder 9 in the space formed by the wall surfaces of the movable die 8 and the movable core portion 6, the end portions of the movable die 8 and the movable core portion 6 are arranged. Are fixed on the same plane.
【００２０】一方、図６において、筐体３が成形された
後、可動板10と可動ピン13とが後退して凹形溝部とそれ
に連通する***部とを形成して二次射出のキャビティ部
11、14を構成し、そこにシール構造部成形用射出口31か
らゲート32を介して第２樹脂を射出してシール構造部４
を成形する。On the other hand, in FIG. 6, after the housing 3 is molded, the movable plate 10 and the movable pin 13 are retracted to form a concave groove portion and a small hole portion communicating with the concave groove portion to form a secondary injection cavity portion.
11 and 14 are formed, and the second resin is injected from the injection port 31 for molding the seal structure portion through the gate 32 into the seal structure portion 4.
To mold.
【００２１】（３）シール構造部付き筐体の製造方法
（成形方法）：次に本発明のシール構造部付き移動無線
端末の筐体の製造方法を図４及び図５により説明する。
先ず、可動型８及び可動型コア部６が作動し、固定型７
に型閉めされキャビティ部15が形成される。その後、油
圧シリンダ９及び12が作動し、これに連結されている可
動板10及び複数個の可動ピン13が作動して前述キャビテ
ィ部15に位置決めさせる。(3) Manufacturing method (molding method) of housing with seal structure: Next, a method of manufacturing the housing of the mobile wireless terminal with seal structure of the present invention will be described with reference to FIGS. 4 and 5.
First, the movable die 8 and the movable die core portion 6 operate, and the fixed die 7
The mold is closed and the cavity 15 is formed. After that, the hydraulic cylinders 9 and 12 are operated, and the movable plate 10 and the plurality of movable pins 13 connected to the hydraulic cylinders are operated to position them in the cavity portion 15.
【００２２】この状態で射出口16より先ず第１樹脂を射
出し筐体３を成形する。筐体３を成形後、型閉めの状態
で油圧シリンダ９及び12を再び作動させ、凹形溝状のシ
ール構造部形成用キャビティ11及び凹形溝部側壁に複数
個の***部14（５）を形成し、これらにシール構造部成
形用の第２樹脂を射出口31より射出して筐体３の合わせ
面の周囲の凹形溝部にシール構造部４を形成する。この
場合、複数個の可動ピン13により形成された凹形溝部側
壁の複数個の***部14（５）にも第２樹脂が充填される
ので、シール構造部４は複数個の***部14（５）と連結
される。このようにして成形されたシール構造部４は筐
体３の凹形溝部に密着しており、さらに凹形溝側壁の複
数個の***14（５）にも充填し連結しているので筐体３
より離脱しにくい構造になっている。これにより、筐体
３とカバー２とは密着されて組込まれるため、筐体３内
に組込まれた電子部品類は、外部の水滴などから完全に
保護される。このシール構造部は、金型に組込まれた薄
板の可動板10が作動することにより形成されるので、厚
さ0．8〜2．0mmの薄肉筐体に適用できる。In this state, the first resin is first injected from the injection port 16 to mold the housing 3. After the casing 3 is molded, the hydraulic cylinders 9 and 12 are actuated again with the mold closed to form the concave groove-shaped cavity 11 for forming the seal structure portion and the plurality of small holes 14 (5) in the concave groove side wall. Then, the second resin for molding the seal structure portion is injected into these through the injection port 31 to form the seal structure portion 4 in the concave groove portion around the mating surface of the housing 3. In this case, the plurality of small holes 14 (5) on the side wall of the concave groove formed by the plurality of movable pins 13 are also filled with the second resin, so that the sealing structure 4 has the plurality of small holes 14 ( 5) is connected. The seal structure 4 formed in this manner is in close contact with the concave groove portion of the housing 3, and is further filled and connected to the plurality of small holes 14 (5) on the side wall of the concave groove. Three
It has a structure that makes it more difficult to come off. As a result, the housing 3 and the cover 2 are assembled in close contact with each other, so that the electronic components incorporated in the housing 3 are completely protected from external water drops and the like. This seal structure is formed by the operation of the thin movable plate 10 incorporated in the mold, and therefore can be applied to a thin casing having a thickness of 0.8 to 2.0 mm.
【００２３】なお、筐体３を構成する第１樹脂として
は、高剛性のエンジニアリングプラスチックスを、シー
ル構造部形成用の第２樹脂としては、ゴム弾性をもつ合
成ゴム類又は熱可塑性エラストマを用いたので、筐体３
とカバー２との合わせ面の押し付け荷重が小さくともそ
の気密性は十分確保でき、筐体内に組込まれた電子部品
類を外部の水滴などから保護できる。It should be noted that the first resin forming the casing 3 is a high-rigidity engineering plastic, and the second resin for forming the seal structure portion is a synthetic rubber having rubber elasticity or a thermoplastic elastomer. Because it was, case 3
Even if the pressing load on the mating surface of the cover 2 and the cover 2 is small, its airtightness can be sufficiently secured, and the electronic components incorporated in the housing can be protected from external water droplets and the like.
【００２４】本実施例では、同一金型の可動板10及び可
動ピン13を作動させてシール構造部形成用の空間部を形
成し、筐体成形とシール構造部の成形を連続動作で達成
できるようにしたが、可動型８にシール構造部形成用の
入駒を別途準備し、筐体成形後この入駒を交換して成形
する方法も含まれることは当然である。また、本発明で
は、シール構造部４を筐体３より離脱しにくくするため
にシール構造部形成用凹型溝部の側壁に連通する複数個
の***部を設け、この部分にシール構造部用の第２樹脂
を充填するようにしたが、筐体の用途に応じこの複数個
の***部を設けない場合もある。In this embodiment, the movable plate 10 and the movable pin 13 of the same mold are operated to form the space portion for forming the seal structure portion, so that the molding of the casing and the molding of the seal structure portion can be achieved by continuous operation. However, it goes without saying that a method of separately preparing an insert piece for forming the seal structure portion in the movable die 8 and exchanging the insert piece after molding the casing is included. Further, in the present invention, in order to make the seal structure 4 difficult to separate from the housing 3, a plurality of small holes communicating with the side wall of the seal structure forming concave groove are provided, and this part has a small hole for the seal structure. Although two resins are filled, the plurality of small holes may not be provided depending on the purpose of the housing.
【００２５】図７は、図２と同様に本実施例により製造
したシール構造部付き薄肉筐体の部分断面を含む斜視図
である。図８は図７のロ部の拡大図である。薄肉筐体17
（３）の対カバーとの合わせ面の周囲に弾性体のシール
構造部18（４）が密着しており、さらにシール構造部18
（４）の側壁に設けた複数個の***部19（５）にシール
構造部と同じ樹脂が一体的に連結して埋め込まれてい
る。Similar to FIG. 2, FIG. 7 is a perspective view including a partial cross section of a thin casing with a seal structure manufactured according to this embodiment. FIG. 8 is an enlarged view of the part B in FIG. Thin case 17
The seal structure portion 18 (4) made of an elastic body is in close contact with the periphery of the mating surface with the cover (3), and the seal structure portion 18 is further provided.
The same resin as the seal structure is integrally connected and embedded in a plurality of small holes 19 (5) provided on the side wall of (4).
【００２６】〈実施例２〉図９〜図10は本発明の他の一
実施例を示す。図９はシール構造部付き箱状の薄肉筐体
の部分断面を含む斜視図、図10は図９のハ部拡大図であ
る。図９に示すような全面同一板厚で構成される筐体20
にも適用できる。シール構造部21（４）及び***22
（５）の構成は実施例１と同様である。<Second Embodiment> FIGS. 9 to 10 show another embodiment of the present invention. FIG. 9 is a perspective view including a partial cross section of a box-shaped thin casing with a seal structure portion, and FIG. 10 is an enlarged view of portion C of FIG. A case 20 having the same plate thickness as shown in FIG.
Can also be applied to. Seal structure part 21 (4) and small hole 22
The configuration of (5) is the same as that of the first embodiment.
【００２７】〈実施例３〉図11はシール構造部付き円筒
状容器の斜視図、図12は図11の二部の拡大図である。図
11に示すような薄肉状の円筒形容器23にも本発明は適用
できる。図中の24はシール構造部（４）であり、25は小
穴（５）である。<Embodiment 3> FIG. 11 is a perspective view of a cylindrical container with a seal structure portion, and FIG. 12 is an enlarged view of two parts in FIG. Figure
The present invention can be applied to a thin-walled cylindrical container 23 as shown in FIG. In the figure, 24 is a seal structure (4), and 25 is a small hole (5).
【００２８】[0028]
【発明の効果】本発明によれば、所期の目的を達成する
ことができた。すなわち、シール部が薄肉であっても充
分なシール機能を有するシール構造部付き筐体が得られ
る。具体的には、対カバーとの合わせ面の周囲に弾性体
のシール構造部を備えた筐体の製造方法において、型キ
ャビティ部容積可変可能な一対の金型のキャビティ部内
に筐体成形用の第１樹脂を射出して筐体を成形し、この
金型に備えた可動板及び複数個の可動ピンを作動させて
筐体の合わせ面にシール構造部形成用の空間部を形成
し、その部分に異なる射出口よりシール構造部用の第２
樹脂を射出し、筐体とシール構造部とを同一型で連続し
て成形するようにしたので、加工工数が低減できる。ま
た、機械的な方法を採用しているため0．5mm程度の極小
のシール構造部が形成できる。さらに、シール構造部の
一部分を筐体側面の複数個の***部に埋設し、シール構
造部が筐体より離脱しにくい構造とした。成形用金型に
ついても、一次、二次の射出成形を同一金型を用い、異
なる射出口から順次異なる樹脂を射出して行なうことが
できるので、装置の小型化と加工工数の低減とを同時に
達成することができる。According to the present invention, the intended purpose can be achieved. That is, it is possible to obtain a casing with a seal structure portion having a sufficient sealing function even if the seal portion is thin. Specifically, in a method of manufacturing a casing provided with an elastic seal structure portion around a mating surface with a cover, a pair of mold cavities whose volume can be varied is used for molding a casing. A housing is molded by injecting the first resin, and a movable plate and a plurality of movable pins provided in the mold are operated to form a space portion for forming a seal structure portion on a mating surface of the housing. 2nd for the seal structure part from different injection ports in the part
Since the resin is injected and the housing and the seal structure are continuously molded in the same mold, the number of processing steps can be reduced. In addition, since a mechanical method is used, a seal structure with an extremely small size of 0.5 mm can be formed. Further, a part of the seal structure is embedded in a plurality of small holes on the side surface of the housing so that the seal structure is not easily separated from the housing. As for the molding dies, the same dies can be used for the primary and secondary injection molding, and different resins can be sequentially injected from different injection ports, so that downsizing of the device and reduction of processing man-hours can be performed simultaneously. Can be achieved.
【図１】本発明の一実施例となるシール構造部付き筐体
を用いた移動無線端末の外観斜視図。FIG. 1 is an external perspective view of a mobile wireless terminal using a housing with a seal structure unit according to an embodiment of the present invention.
【図２】同じく図１の筐体部のａ−ａ´断面図。FIG. 2 is a sectional view taken along the line aa ′ of the housing portion of FIG.
【図３】同じく図２のイ部拡大図。FIG. 3 is also an enlarged view of a portion of FIG.
【図４】同じくシール構造部付き移動無線端末の筐体を
製造する金型の外観斜視図。FIG. 4 is an external perspective view of a mold for manufacturing the casing of the mobile wireless terminal with the seal structure portion.
【図５】同じく図４の金型のｂ−ｂ´断面図で、筐体を
成形している状態を示す図。5 is a sectional view of the mold of FIG. 4 taken along the line bb ′, showing a state in which the casing is being molded.
【図６】同じく図４の金型のｂ−ｂ´断面図で、筐体の
合わせ面にシール構造部を成形している状態を示す図。FIG. 6 is a sectional view of the mold of FIG. 4 taken along the line bb ′, showing a state in which a seal structure portion is formed on the mating surface of the housing.
【図７】同じくシール構造部付き薄肉筐体の部分断面を
含む斜視図。FIG. 7 is a perspective view including a partial cross-section of a thin-walled housing having a seal structure portion.
【図８】同じく図７のロ部拡大図。FIG. 8 is an enlarged view of part B of FIG.
【図９】同じくシール構造部付き薄肉筐体及び薄肉容器
の斜視図。FIG. 9 is a perspective view of a thin casing and a thin container with a seal structure portion.
【図１０】同じく図９のハ部拡大図。FIG. 10 is an enlarged view of portion C of FIG.
【図１１】同じくシール構造部付き円筒状容器の斜視
図。FIG. 11 is a perspective view of a cylindrical container with a seal structure portion.
【図１２】同じく図１１のニ部拡大図。FIG. 12 is an enlarged view of part D of FIG.
【図１３】従来のシール構造部付き筐体の製造工程図。FIG. 13 is a manufacturing process diagram of a conventional casing with a seal structure portion.
１…移動体無線端末、 ２…カバー、
３、１７、２０、２３…シール構造部付き筐体、４、１
８、２１…シール構造部、 ５、１９、２２、２５…小
穴部、６…可動型コア部、 ７…固
定型、８…可動型、 ９、１２…油
圧シリンダ、１０…可動板、 １
３…可動ピン、１１…シール構造部形成用キャビティ、
１５…筐体形成用キャビティ、１６…筐体樹脂射出口、
３１…シール構造部用樹脂射出口、２６
…一次射出で成形されたプラスチック部品本体（筐
体）、２７…シール形成溝、 ２８…弾
性シール、２９…クサビ状の溝、 ３０
…シール形成部、３１…シール構造部成形用射出口、
３２…ゲート、３３、３４…射出口付きシリンダー、
３５…固定板。1 ... Mobile wireless terminal, 2 ... Cover,
3, 17, 20, 23 ... Casing with seal structure part, 4, 1
8, 21 ... Seal structure part, 5, 19, 22, 25 ... Small hole part, 6 ... Movable core part, 7 ... Fixed type, 8 ... Movable type, 9, 12 ... Hydraulic cylinder, 10 ... Movable plate, 1
3 ... Movable pin, 11 ... Cavity for forming seal structure,
15 ... Housing forming cavity, 16 ... Housing resin injection port,
31 ... Resin injection port for seal structure, 26
... Main body (housing) of plastic part molded by primary injection, 27 ... Seal forming groove, 28 ... Elastic seal, 29 ... Wedge-shaped groove, 30
... Seal forming part, 31 ... Injection port for molding seal structure part,
32 ... Gate, 33, 34 ... Cylinder with injection port,
35 ... Fixed plate.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ２９Ｌ 22:00 4Ｆ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Office reference number FI technical display location B29L 22:00 4F
Claims (8)
ル構造部を備えた筐体であって、前記シール構造部の一
部が合わせ面上に突出して盛り上がり、他の一部が凹部
溝内及び溝に直交して連通する複数の穴内に連結して一
体的に成形され埋め込まれて成るシール構造部付き筐
体。1. A housing provided with an elastic seal structure portion around a mating surface with a cover, wherein a part of the seal structure portion protrudes and rises on the mating surface, and the other part is a concave portion. A housing with a seal structure, which is integrally molded and embedded in a groove and a plurality of holes communicating with each other at right angles to the groove.
プラスチックスで、上記シール構造部をゴム弾性をもつ
合成ゴム類、もしくは熱可塑性エラストマからなる弾性
体で構成して成る請求項１記載のシール構造部付き筐
体。2. The seal structure according to claim 1, wherein the casing is made of rigid engineering plastics, and the seal structure portion is made of an elastic body made of synthetic rubber having rubber elasticity or a thermoplastic elastomer. Case with parts.
動型コア部と、これらの型で形成されるキャビティ部内
の容積を可変とする可動板及び可動板に直交し、かつ当
接可能に配設された複数個の可動ピンと、前記キャビテ
ィ部内に筐体を成形するための第１樹脂を射出する手段
と、前記可動板及び可動ピンにより形成された空間部に
シール構造部を成形するための第２樹脂を射出する手段
とを備えて成り、同一型にてキャビティ部内の容積を変
更することにより一次射出成形により筐体を成形し、二
次射出成形によりシール構造部を成形するようにして成
るシール構造部付き筐体成形用金型。3. A fixed die, a movable die, a movable die core portion which interlocks with the movable die, a movable plate and a movable plate which are variable in volume in a cavity portion formed by these dies, and are orthogonal to the movable plate. A plurality of movable pins arranged to be in contact with each other, a means for injecting a first resin for molding a housing into the cavity, and a seal structure portion in a space formed by the movable plate and the movable pin. And a means for injecting a second resin for molding, by changing the volume of the cavity in the same mold to mold the housing by primary injection molding and by molding the seal structure by secondary injection molding. A metal mold for molding a casing with a seal structure part.
動板を、上記可動型と可動型コア部との間に往復移動可
能の状態で配設すると共に、可動ピンを上記固定型側に
前記可動板と直交して往復移動可能の状態で配設して成
り、これら両者は連動してキャビティ部内外に往復移動
し、一次射出成形時にはキャビティ部内に、二次射出成
形時にはキャビティ部外に移動して成形するようにして
成る請求項３記載のシール構造部付き筐体成形用金型。4. A movable plate having a variable volume in the cavity is disposed between the movable die and the movable die core in a reciprocable manner, and a movable pin is provided on the fixed die side. It is arranged so as to be able to reciprocate orthogonally to the movable plate, and these both move reciprocally in and out of the cavity part in conjunction with each other. The mold for molding a casing with a seal structure according to claim 3, wherein the mold is formed by molding.
ール構造部を備えた筐体の製造方法であって、型キャビ
ティ部の容積変更可能な一対の金型のキャビティ部内に
第１樹脂を射出して筐体を成形する一次射出工程と、同
一型内にて型キャビティ部の容積変更手段として用いた
可動板及び複数個の可動ピンを型キャビティ部外に移動
させて前記成形筐体に空間部を形成し、その空間部に異
なる射出口より第２樹脂を射出してシール構造部を成形
する二次射出工程とを有して成るシール構造部付き筐体
の製造方法。5. A method of manufacturing a casing having an elastic seal structure around a mating surface with a cover, wherein a first cavity is provided in a cavity of a pair of molds whose volumes can be changed. A primary injection step of injecting a resin to mold a casing, and a movable plate and a plurality of movable pins used as means for changing the volume of the mold cavity in the same mold are moved to the outside of the mold cavity to form the molding casing. A method of manufacturing a casing with a seal structure part, comprising: forming a space part in the body; and injecting a second resin from a different injection port into the space part to mold the seal structure part.
より形成される空間部は、可動板により形成された凹型
溝と、これに直交し連通して可動ピンにより形成された
穴とによって構成されて成る請求項５記載のシール構造
部付き筐体の製造方法。6. A space formed by the movable plate of the mold and a plurality of movable pins includes a concave groove formed by the movable plate and a hole formed by the movable pin which is orthogonal to and communicates with the concave groove. The method for manufacturing a housing with a seal structure according to claim 5, wherein
出工程においては、剛性を有するエンジニアリングプラ
スチックスを用いて射出成形し、第２樹脂を射出してシ
ール構造部を成形する二次射出工程においては、ゴム弾
性を有する合成ゴム類、もしくは熱可塑性エラストマを
用いて射出成形する工程として成る請求項５もしくは６
記載のシール構造部付き筐体の製造方法。7. In a primary injection step of injecting a first resin to form a housing, injection molding is performed using a rigid engineering plastic, and a second resin is injected to form a seal structure portion. The next injection step is a step of performing injection molding using synthetic rubber having rubber elasticity or a thermoplastic elastomer.
A method for manufacturing a casing with a seal structure part as described.
0．8mm以上である時、シール構造部の幅を0．5mm以上と
して薄肉部品に筐体のシール構造を形成する工程を有し
て成る請求項５乃至７何れか記載のシール構造部付き筐
体の製造方法。8. A plate thickness of a portion forming a seal structure of the housing is
The casing with a seal structure portion according to any one of claims 5 to 7, further comprising a step of forming a seal structure for the casing on a thin-walled component when the width of the seal structure portion is 0.5 mm or more when the thickness is 0.8 mm or more. Body manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4195154A JPH0631770A (en) | 1992-07-22 | 1992-07-22 | Box body with sealing structural part, mold and manufacture for which they are used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4195154A JPH0631770A (en) | 1992-07-22 | 1992-07-22 | Box body with sealing structural part, mold and manufacture for which they are used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0631770A true JPH0631770A (en) | 1994-02-08 |
Family
ID=16336333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4195154A Pending JPH0631770A (en) | 1992-07-22 | 1992-07-22 | Box body with sealing structural part, mold and manufacture for which they are used |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0631770A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0792095A2 (en) * | 1996-02-20 | 1997-08-27 | ABB Lucasystem S.r.L. | Seals for tight-seal box |
| US6406123B1 (en) | 1998-09-07 | 2002-06-18 | Seiko Epson Corporation | Capping unit for ink jet recording head incorporated in ink jet recording apparatus and method of manufacturing the same |
| KR100441411B1 (en) * | 2001-09-04 | 2004-07-27 | 주식회사 삼우금형 | Uppercase injection molding apparatus for air-cleaner of automobile |
| JP2008003332A (en) * | 2006-06-22 | 2008-01-10 | Chugoku Electric Power Co Inc:The | Closure for cable connection |
| WO2009049435A1 (en) * | 2007-10-19 | 2009-04-23 | Weidmann Plastics Technology Ag | Method for the production of multicomponent plastic parts, injection molding tool, and plastic part produced according to said method |
| EP2093040A1 (en) * | 2008-02-22 | 2009-08-26 | DENSO THERMAL SYSTEMS S.p.A. | Method for manufacturing a tank of a heat exchanger, and tank obtained using said method |
| WO2016202483A1 (en) * | 2015-06-17 | 2016-12-22 | Robert Bosch Gmbh | Plastic housing, method, and injection molding device for producing a plastic housing |
| CN109435142A (en) * | 2018-11-09 | 2019-03-08 | 深圳市虹鑫光电科技有限公司 | A kind of ultra-speed precise hardware dies structure application LED support manufacturing method |
-
1992
- 1992-07-22 JP JP4195154A patent/JPH0631770A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0792095A2 (en) * | 1996-02-20 | 1997-08-27 | ABB Lucasystem S.r.L. | Seals for tight-seal box |
| EP0792095A3 (en) * | 1996-02-20 | 1998-04-01 | ABB Lucasystem S.r.L. | Seals for tight-seal box |
| US6406123B1 (en) | 1998-09-07 | 2002-06-18 | Seiko Epson Corporation | Capping unit for ink jet recording head incorporated in ink jet recording apparatus and method of manufacturing the same |
| KR100441411B1 (en) * | 2001-09-04 | 2004-07-27 | 주식회사 삼우금형 | Uppercase injection molding apparatus for air-cleaner of automobile |
| JP2008003332A (en) * | 2006-06-22 | 2008-01-10 | Chugoku Electric Power Co Inc:The | Closure for cable connection |
| WO2009049435A1 (en) * | 2007-10-19 | 2009-04-23 | Weidmann Plastics Technology Ag | Method for the production of multicomponent plastic parts, injection molding tool, and plastic part produced according to said method |
| EP2093040A1 (en) * | 2008-02-22 | 2009-08-26 | DENSO THERMAL SYSTEMS S.p.A. | Method for manufacturing a tank of a heat exchanger, and tank obtained using said method |
| WO2016202483A1 (en) * | 2015-06-17 | 2016-12-22 | Robert Bosch Gmbh | Plastic housing, method, and injection molding device for producing a plastic housing |
| CN109435142A (en) * | 2018-11-09 | 2019-03-08 | 深圳市虹鑫光电科技有限公司 | A kind of ultra-speed precise hardware dies structure application LED support manufacturing method |
| CN109435142B (en) * | 2018-11-09 | 2021-02-02 | 深圳市虹鑫光电科技有限公司 | Manufacturing method of LED bracket applied to ultra-high-speed precise hardware mould structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4733733B2 (en) | Two-color molding tool and two-color molded product | |
| JPH0631770A (en) | Box body with sealing structural part, mold and manufacture for which they are used | |
| JPH08162251A (en) | Manufacture of waterproof connector housing | |
| JP3668915B2 (en) | Injection molding method and injection mold for resin-encapsulated molded product | |
| JP3665596B2 (en) | Memory card manufacturing method | |
| JP3006834B2 (en) | Injection molding machine | |
| JP2754762B2 (en) | Composite simultaneous molding die | |
| JP4777930B2 (en) | Foam molded product with soft insert parts and molding method thereof | |
| JP3005296U (en) | Insert mold | |
| JP2003053794A (en) | Lock mechanism of injection mold | |
| JP4407810B2 (en) | In-mold coating mold | |
| CN220482415U (en) | Forming die of lid behind on-vehicle bluetooth headset | |
| JP3369704B2 (en) | Injection compression molding method and apparatus | |
| JP3406618B2 (en) | Thin plate housing with seal structure | |
| CN212472240U (en) | Secondary injection mold structure for large body of electric toothbrush | |
| JP2002292687A (en) | Mold for injection-compression molding of light guide plate having wedge shape gradually reduced in thickness from one end thereof to other end thereof, and method for manufacturing light guide plate using the mold | |
| JP3057843B2 (en) | Cassette mold equipment | |
| JP3483810B2 (en) | Mold clamping mechanism of injection molding machine for disk molding | |
| JPH02102011A (en) | Molding method for laminated moldings | |
| CN214448071U (en) | Parting surface high-tightness bonding die | |
| JP2004136474A (en) | Cylindrical elastomer and its manufacturing method | |
| JP4096042B2 (en) | Lens with lens barrel and manufacturing method thereof | |
| JP3070354B2 (en) | Injection molding method and injection mold | |
| CN215242628U (en) | Demoulding auxiliary mechanism for injection molding products of moulds | |
| CN211071834U (en) | Die set |