JPH0355327B2 - - Google Patents
Info
- Publication number
- JPH0355327B2 JPH0355327B2 JP21128486A JP21128486A JPH0355327B2 JP H0355327 B2 JPH0355327 B2 JP H0355327B2 JP 21128486 A JP21128486 A JP 21128486A JP 21128486 A JP21128486 A JP 21128486A JP H0355327 B2 JPH0355327 B2 JP H0355327B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- sealing material
- elastic sealing
- outer edge
- valve body
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00664—Construction or arrangement of damper doors
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14778—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the article consisting of a material with particular properties, e.g. porous, brittle
- B29C45/14795—Porous or permeable material, e.g. foam
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Flow Control Members (AREA)
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、例えば自動車のベンチレータなどの
空調用のダクトを開閉するシヤツターバルブの成
形方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a method of forming a shutter valve for opening and closing an air conditioning duct such as a ventilator of an automobile.
（従来の技術）
従来、シヤツターバルブの形成にあたつては、
例えば実開昭54−27558号公報に示される方法が
用いられている。(Prior art) Conventionally, when forming a shutter valve,
For example, the method disclosed in Japanese Utility Model Application Publication No. 54-27558 is used.
この方法は、第７図に示すように、回動中心と
なる支軸を受ける受部１を備えた合成樹脂製のバ
ルブ本体２を射出成形によつて成形するととも
に、例えばウレタン製の弾性シール材３に接着剤
を塗布あるいは両面テープを貼着した後、組立ラ
インにおいて、バルブ本体２と弾性シール材３と
を接着剤あるいは両面テープによつて貼付け、そ
のバルブ本体２の外縁部２ａから弾性シール材３
のシール部分を突出させてシヤツターバルブを形
成するようになつている。 In this method, as shown in FIG. 7, a valve body 2 made of synthetic resin is molded by injection molding and is equipped with a receiving part 1 for receiving a support shaft serving as a center of rotation, and an elastic seal made of, for example, urethane is After applying adhesive or pasting double-sided tape to the material 3, the valve body 2 and the elastic sealing material 3 are pasted with adhesive or double-sided tape on the assembly line, and the elastic sealing material 3 is attached from the outer edge 2a of the valve body 2. Seal material 3
The seal part of the shutter is designed to protrude to form a shutter valve.
（発明が解決しようとする問題点）
しかし、上記のような従来のシヤツターバルブ
の形成方法では、弾性シール材３に接着剤を塗布
あるいは両面テープを貼着した後、その弾性シー
ル材３をバルブ本体２に接着するという作業が必
要であり、手間ならびに時間がかかる問題点があ
つた。(Problems to be Solved by the Invention) However, in the conventional shutter valve forming method as described above, after applying an adhesive or pasting double-sided tape to the elastic sealing material 3, the elastic sealing material 3 is The problem was that it required the work of adhering to the valve body 2, which was time-consuming and labor-intensive.
そこで、手間ならびに時間がかからずに形成す
る方法として、弾性シール材を金型内にインサー
トしてその金型のキヤビテイの外縁部にあたる弾
性シール材の部分を金型開放後に復元可能に押し
つぶして挟み込み、この金型のキヤビテイ内に溶
融合成樹脂を射出してキヤビテイ内に臨む弾性シ
ール材とバルブ本体とを一体化することが考えら
れる。しかし、バルブ成形後、バルブ本体の弾性
シール材が一体化された外縁部が角になるため、
シヤツターバルブの使用に伴い、そのバルブ本体
の外縁部との境目の部分から弾性シール材が簡単
に切れ易く、シール機能を損い易い問題が考えら
れる。 Therefore, as a method of forming the material without requiring much time and effort, an elastic sealant is inserted into the mold, and the portion of the elastic sealant that corresponds to the outer edge of the cavity of the mold is crushed so that it can be restored after the mold is opened. It is conceivable to integrate the elastic sealing material facing into the cavity with the valve body by sandwiching the valve body and injecting molten synthetic resin into the cavity of the mold. However, after the valve is molded, the outer edge of the valve body where the elastic sealing material is integrated becomes a corner.
When a shutter valve is used, there is a problem in that the elastic sealing material is easily cut off from the boundary with the outer edge of the valve body, which tends to impair the sealing function.
本発明は上述のような問題点に鑑みなされたも
ので、手間ならびに時間がかからずに形成でき、
しかも、バルブ本体の外縁部によつて弾性シール
材が切れるのを防止したシヤツターバルブの成形
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 the above-mentioned problems, and can be formed without much effort and time.
Moreover, it is an object of the present invention to provide a method for molding a shutter valve that prevents the elastic sealing material from being cut by the outer edge of the valve body.
（問題点を解決するための手段）
本発明は、車両の空調用のダクト２６を開閉す
るシヤツターバルブ２３の成形方法であつて、一
対の型体１２，１３で構成される金型１１の型開
されたキヤビテイ１５内に弾性シール材１９を配
置するインサート工程、金型１１の一対の型体１
２，１３の型閉時に型体１２の挟み込み部１６で
弾性シール材１５の外縁部のみを溶融合成樹脂が
浸透せず型開時に復元可能な圧縮状態に挟み込む
型閉工程、金型１１のキヤビテイ１５内の弾性シ
ール材１９の一側に溶融合成樹脂を射出充填して
弾性シール材１９を他側の金型面１７ａに押し付
け、弾性シール材１９に溶接合成樹脂が一体化さ
れるバルブ本体２１を成形するとともに、他側の
金型面１７ａにキヤビテイ１５の端部位置に対応
して設けられた円弧状の凹溝１８の形状に沿つて
バルブ本体２１の弾性シール材１９と一体化され
る外縁部を円弧状に成形する射出成形工程、金型
１１の一対の型体１２，１３間から成形されたシ
ヤツターバルブ２３を取出し、一対の型体１２，
１３間で挟み込まれていた弾性シール材１９の外
縁部を復元させる型開工程を順に行うものであ
る。
(Means for Solving the Problems) The present invention is a method for molding a shutter valve 23 that opens and closes a duct 26 for air conditioning of a vehicle. Insertion step of arranging the elastic sealing material 19 in the opened cavity 15, a pair of mold bodies 1 of the mold 11
2 and 13, a mold closing process in which only the outer edge of the elastic sealing material 15 is held in a compressed state by the sandwiching part 16 of the mold body 12 so that the molten synthetic resin does not permeate and can be restored when the mold is opened; A valve body 21 in which molten synthetic resin is injected and filled into one side of the elastic sealing material 19 in the valve body 15 and the elastic sealing material 19 is pressed against the mold surface 17a on the other side, and the synthetic resin is integrated with the elastic sealing material 19 by welding. At the same time, it is integrated with the elastic sealing material 19 of the valve body 21 along the shape of the arcuate groove 18 provided on the other mold surface 17a corresponding to the end position of the cavity 15. In the injection molding process of molding the outer edge into an arc shape, the molded shutter valve 23 is taken out from between the pair of mold bodies 12 and 13 of the mold 11, and the molded shutter valve 23 is
A mold opening process is performed in order to restore the outer edge of the elastic sealing material 19 that was sandwiched between the molds 13.
（作用）
本発明では、一対の型体１２，１３間にインサ
ートされる弾性シール材１９の外縁部のみを溶融
合成樹脂が浸透せず型開後に復元可能な圧縮状態
に挟み込むことにより、射出成形工程でキヤビテ
イ１５内に溶融合成樹脂が射出充填されても弾性
シール材１９の外縁部に溶融合成樹脂が浸透する
のを防ぐとともに、型開時に弾性シール材１９の
外縁部を復元させてシール性能を確保するように
している。(Function) In the present invention, injection molding is achieved by sandwiching only the outer edge of the elastic sealing material 19 inserted between the pair of mold bodies 12 and 13 into a compressed state that does not allow the molten synthetic resin to penetrate and can be restored after the mold is opened. Even if the molten synthetic resin is injected and filled into the cavity 15 during the process, it is prevented from penetrating the outer edge of the elastic sealing material 19, and the outer edge of the elastic sealing material 19 is restored when the mold is opened to improve sealing performance. We are trying to ensure that.
また、射出成形工程で、金型面１７ａに設けら
れた円弧状の凹溝１８の形状に沿つてバルブ本体
２１の弾性シール材１９と一体化される外縁部を
円弧状に成形することにより、バルブ本体２１の
角で弾性シール材１９を破損させるのを防止する
ようにしている。 In addition, in the injection molding process, by forming the outer edge portion of the valve body 21 that is integrated with the elastic sealing material 19 into an arc shape along the shape of the arc-shaped groove 18 provided on the mold surface 17a, This is to prevent the elastic sealing material 19 from being damaged at the corners of the valve body 21.
（実施例）
以下、本発明の一実施例の構成を図面を参照し
て説明する。(Example) Hereinafter, the configuration of an example of the present invention will be described with reference to the drawings.
第１図において、１１は金型で、一対の型体と
しての固定型１２とこの固定型１２に対し接離す
る可動型１３とを対設している。そして、その固
定型１２には、溶融合成樹脂が射出されるスプル
ー１４およびこのスプルー１４に連動して可動型
１３に接合した際に構成されるキヤビテイ１５が
設けられ、さらに、このキヤビテイ１５の周囲に
可動型１３に後述する弾性シール材１９を押しつ
ぶして挟み込む挟み込み部１６が設けられてい
る。また、可動型１３には、固定型１２のキヤビ
テイ１５および挟み込み部１６が型閉時に嵌入す
る型凹部１７が設けられているとともに、この型
凹部１７内の金型面１７ａにキヤビテイ１５の端
部位置に対応して円弧状の凹溝１８が設けられて
いる。 In FIG. 1, reference numeral 11 denotes a mold, in which a fixed mold 12 serving as a pair of mold bodies and a movable mold 13 that moves toward and away from the fixed mold 12 are disposed opposite to each other. The fixed mold 12 is provided with a sprue 14 through which the molten synthetic resin is injected, and a cavity 15 that is formed when joined to the movable mold 13 in conjunction with the sprue 14, and furthermore, a cavity 15 is provided around the cavity 15. The movable mold 13 is provided with a pinching part 16 that crushes and pinches an elastic sealing material 19, which will be described later. Furthermore, the movable mold 13 is provided with a mold recess 17 into which the cavity 15 and the sandwiching part 16 of the fixed mold 12 are fitted when the mold is closed, and the end of the cavity 15 is provided on the mold surface 17a within the mold recess 17. Arc-shaped grooves 18 are provided corresponding to the positions.
また、１９は例えば軟質発泡ウレタンシートや
ネオプレンスポンジラバー等からなる弾性シール
材である。 Further, 19 is an elastic sealing material made of, for example, a soft urethane foam sheet or neoprene sponge rubber.
そうして、弾性シール材１９に軟質発泡ウレタ
ンシートを用いた場合のシヤツターバルブの成形
方法を説明する。まず、インサート工程を第１図
に示し、金型１１の可動型１３の型凹部１７に、
弾性シール材１９がインサート供給される。 Next, a method of forming a shutter valve using a soft foamed urethane sheet as the elastic sealing material 19 will be explained. First, the inserting process is shown in FIG.
An elastic sealing material 19 is supplied as an insert.
次に、型閉工程を第２図に示し、固定型１２と
可動型１３とを型閉することにより、可動型１３
の型凹部１７内に固定型１２のキヤビテイ１５お
よび挟み込み部１６が嵌入し、可動型１３の金型
面１７ａと固定型１２の挟み込み部１６との間
に、弾性シール材１９のキヤビテイ１５の外縁部
のみを溶融合成樹脂が浸透せず型開後に復元可能
な圧縮状態に挟み込む。 Next, the mold closing process is shown in FIG. 2, and by closing the fixed mold 12 and the movable mold 13, the movable mold 13
The cavity 15 and the sandwiching part 16 of the fixed mold 12 fit into the mold recess 17 of the elastic sealing material 19, and the outer edge of the cavity 15 of the elastic sealing material 19 is inserted between the mold surface 17a of the movable mold 13 and the sandwiching part 16 of the fixed mold 12. Only the parts are held in a compressed state where the molten synthetic resin does not penetrate and can be restored after the mold is opened.
次に、射出成形工程を第３図に示し、スプルー
１４から熱可塑性の溶融合成樹脂２０を射出する
と、この溶融合成樹脂２０は、その射出圧力と熱
により弾性シール材１９を射出側とは反対の可動
型１３の金型面１７ａに押し付けて弾性シール材
１９に浸透しつつキヤビテイ１５内に充填され、
また、金型面１７ａの凹溝１８に沿つて弾性シー
ル材１９および溶融合成樹脂２０が入り込む。こ
のとき、弾性シール材１９の外縁部のみは予め圧
縮状態に挟み込まれているため溶融合成樹脂２０
が浸透することはない。 Next, the injection molding process is shown in FIG. 3. When the thermoplastic molten synthetic resin 20 is injected from the sprue 14, the molten synthetic resin 20 causes the elastic sealing material 19 to move in the opposite direction from the injection side due to the injection pressure and heat. is pressed against the mold surface 17a of the movable mold 13 and is filled into the cavity 15 while penetrating the elastic sealing material 19,
Further, the elastic sealing material 19 and the molten synthetic resin 20 enter along the groove 18 of the mold surface 17a. At this time, since only the outer edge of the elastic sealing material 19 is compressed in advance, the molten synthetic resin 20
will not penetrate.
そして、適度な冷却期間を経て成形が完了し、
弾性シール材１９と一体化されたバルブ本体２１
が成形される。 After a moderate cooling period, the molding is completed.
Valve body 21 integrated with elastic sealing material 19
is formed.
そして、型開工程を第４図に示し、固定型１２
と可動型１３とが型開されることにより、固定型
１２の挟み込み部１６と可動型１３との間に復元
可能に挟み込まれていた弾性シール材１９の外縁
部は、挟み込まれる前の状態に復元し、また、バ
ルブ本体２１と一体化された弾性シール材１９の
部分は、射出成形時において溶融合成樹脂２０が
弾性シール材１９の内部に浸透したため、押しつ
ぶされたままの状態にある。 The mold opening process is shown in FIG. 4, and the fixed mold 12
When the mold 13 and the movable mold 13 are opened, the outer edge of the elastic sealing material 19, which was restorably sandwiched between the sandwiching part 16 of the fixed mold 12 and the movable mold 13, returns to the state before being sandwiched. The portion of the elastic sealing material 19 that has been restored and integrated with the valve body 21 remains in a crushed state because the molten synthetic resin 20 penetrated into the interior of the elastic sealing material 19 during injection molding.
また、バルブ本体２１の弾性シール材１９が一
体化された外縁部には、金型面１７ａの凹溝１８
によつて円弧状の突部２２が成形される。なお、
バルブ本体２１と一体化された弾性シール材１９
の部分は押しつぶされたままの状態にあるが、バ
ルブ本体２１の外縁部の弾性シール材１９の部分
がシール可能であるので、シヤツターバルブとし
てのシール機能には差支えない。 Further, the outer edge of the valve body 21 where the elastic sealing material 19 is integrated has a concave groove 18 on the mold surface 17a.
The arc-shaped protrusion 22 is formed by the following steps. In addition,
Elastic sealing material 19 integrated with valve body 21
Although the portion remains crushed, since the portion of the elastic sealing material 19 on the outer edge of the valve body 21 can be sealed, there is no problem with the sealing function as a shutter valve.
そして、バルブ本体２１のスプルー部分を切断
して、シヤツターバルブ２３が成形される。 Then, the sprue portion of the valve body 21 is cut to form the shutter valve 23.
このようにして成形されたシヤツターバルブ２
３は、第５図および第６図に示すように、バルブ
本体２１の左右両端に設けられた支軸２４を介し
てベンチレータ２５の矩形状のダクト２６内に回
動可能に配置され、そして、図示しない開閉機構
によつてそのダクト２６を開閉するようになつて
おり、このダクト２６の閉塞時に、バルブ本体２
１の外縁部の弾性シール材１９がダクト２６の内
面に圧接してダクト２６を閉塞するようになつて
いる。 Shutter valve 2 molded in this way
3 is rotatably arranged within a rectangular duct 26 of the ventilator 25 via support shafts 24 provided at both left and right ends of the valve body 21, as shown in FIGS. 5 and 6, and The duct 26 is opened and closed by an opening/closing mechanism (not shown), and when the duct 26 is closed, the valve body 2
The elastic sealing material 19 on the outer edge of the duct 26 is pressed against the inner surface of the duct 26 to close the duct 26.
この際、バルブ本体２１の外縁部が円弧状の突
部２２になつているため、そのバルブ本体２１の
外縁部との境目の部分で弾性シール材１９が簡単
に切れるのを防止することができる。 At this time, since the outer edge of the valve body 21 is formed into an arc-shaped protrusion 22, it is possible to prevent the elastic sealing material 19 from being easily cut at the boundary with the outer edge of the valve body 21. .
なお、弾性シール材が独立気泡のネオプレンス
ポンジラバーの場合、溶融合成樹脂の射出圧力や
熱により接触面が溶けたりして凹凸状になり樹脂
とのアンカー効果により一体化される。 Note that when the elastic sealing material is a closed-cell neoprene sponge rubber, the contact surface melts due to the injection pressure and heat of the molten synthetic resin, becomes uneven, and becomes integrated with the resin due to the anchoring effect.
また、上記弾性シール材１９は、バルブ本体２
１の一側面全体と一体化させる構成でも、バルブ
本体２１の一側面の中央部分に対応して弾性シー
ル材１９に開口部を設けて、バルブ本体２１の周
縁部のみと一体化させるようにしてもよい。 Further, the elastic sealing material 19 is attached to the valve body 2.
Even in a configuration in which the elastic sealing material 19 is integrated with the entire one side of the valve body 21, an opening is provided in the elastic sealing material 19 corresponding to the center portion of one side of the valve body 21, so that the elastic sealing material 19 is integrated only with the peripheral edge of the valve body 21. Good too.
また、このシヤツターバルブ２３は、ベンチレ
ータ２５に限らず、車両の内外の空気の交換を行
なうダクトドラクターなどのバルブとしても利用
できる。 Further, the shutter valve 23 can be used not only as the ventilator 25 but also as a valve for a duct driver or the like that exchanges air inside and outside the vehicle.
本発明によれば、一対の型体間にインサートさ
れる弾性シール材に外縁部のみを溶融合成樹脂が
浸透せず型開後に復元可能な圧縮状態に挟み込む
ことにより、射出成形工程でキヤビテイ内に溶融
合成樹脂が射出充填されても弾性シール材の外縁
部に溶融合成樹脂が浸透するのを防ぐとともに、
型開時に弾性シール材の外縁部を復元させてシー
ル性能を確保することができるため、インサート
成形によつてシヤツターバルブを容易に製作する
ことができ、また、射出成形工程で、金型面に設
けられた円弧状の凹溝の形状に沿つてバルブ本体
の弾性シール材と一体化される外縁部を円弧状に
成形することにより、バルブ本体の角で弾性シー
ル材の破損させるのを防止することができる。
According to the present invention, by sandwiching only the outer edge of the elastic sealing material inserted between a pair of mold bodies into a compressed state that prevents the molten synthetic resin from penetrating and can be restored after the mold is opened, it is possible to prevent the molten synthetic resin from penetrating into the cavity during the injection molding process. Even if the molten synthetic resin is injected and filled, it prevents the molten synthetic resin from penetrating the outer edge of the elastic sealing material, and
Since the outer edge of the elastic seal material can be restored when the mold is opened to ensure sealing performance, shutter valves can be easily manufactured by insert molding. By forming the outer edge that is integrated with the elastic sealing material of the valve body into an arc shape along the shape of the arc-shaped groove provided in the valve body, the elastic sealing material is prevented from being damaged at the corners of the valve body. can do.
第１図は本発明のシヤツターバルブの成形方法
の一実施例を示す金型の断面図、第２図はその型
閉状態の断面図、第３図はその射出状態の断面
図、第４図はその成形後のシヤツターバルブの斜
視図、第５図および第６図はそれぞれ使用状態の
斜視図、第７図は従来のシヤツターバルブの斜視
図である。
１１……金型、１２……型体としての固定型、
１３……型体としての可動型、１５……キヤビテ
イ、１６……挟み込み部、１７ａ……金型面、１
８……凹溝、１９……弾性シール材、２１……バ
ルブ本体、２３……シヤツターバルブ、２６……
ダクト。
FIG. 1 is a cross-sectional view of a mold showing an embodiment of the shutter valve molding method of the present invention, FIG. 2 is a cross-sectional view of the mold in the closed state, FIG. 3 is a cross-sectional view of the mold in the injection state, and FIG. This figure is a perspective view of the shutter valve after molding, FIGS. 5 and 6 are perspective views of the shutter valve in use, and FIG. 7 is a perspective view of a conventional shutter valve. 11...Mold, 12...Fixed mold as mold body,
13... Movable mold as mold body, 15... Cavity, 16... Sandwiching part, 17a... Mold surface, 1
8... Concave groove, 19... Elastic sealing material, 21... Valve body, 23... Shutter valve, 26...
duct.
Claims (1)
バルブの成形方法であつて、 一対の型体で構成される金型の型開されたキヤ
ビテイ内に弾性シール材を配置するインサート工
程、 金型の一対の型体の型閉時に型体の挟み込み部
で弾性シール材の外縁部のみを溶融合成樹脂が浸
透せず型開時に復元可能な圧縮状態に挟み込む型
閉工程、 金型のキヤビテイ内の弾性シール材の一側に溶
融合成樹脂を射出充填して弾性シール材を他側の
金型面に押し付け、弾性シール材に溶融合成樹脂
が一体化されるバルブ本体を成形するとともに、
他側の金型面にキヤビテイ端部位置に対応して設
けられた円弧状の凹溝の形状に沿つてバルブ本体
の弾性シール材と一体化される外縁部を円弧状に
成形する射出成形工程、 金型の一対の型体間から成形されたシヤツター
バルブを取出し、一対の型体間で挟み込まれてい
た弾性シール材の外縁部を復元させる型開工程 を順に行うことを特徴とするシヤツターバルブの
成形方法。[Claims] 1. A method for molding a shutter valve that opens and closes an air conditioning duct in a vehicle, wherein an elastic sealing material is placed in an opened cavity of a mold consisting of a pair of mold bodies. Insert process, mold closing process in which only the outer edge of the elastic sealing material is held in a compressed state where the molten synthetic resin does not penetrate and can be restored when the mold is opened at the sandwiching part of the mold body when the pair of mold bodies is closed. Molten synthetic resin is injected and filled into one side of the elastic sealing material in the cavity of the mold, and the elastic sealing material is pressed against the mold surface on the other side to form a valve body in which the molten synthetic resin is integrated with the elastic sealing material. With,
An injection molding process in which the outer edge part, which is integrated with the elastic sealing material of the valve body, is molded into an arc shape along the shape of an arc-shaped groove provided on the other side of the mold surface corresponding to the cavity end position. , a shutter valve characterized in that a molded shutter valve is taken out from between a pair of mold bodies of a mold, and a mold opening process is performed in order to restore the outer edge of the elastic sealing material that was sandwiched between the pair of mold bodies. How to form tar valves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21128486A JPS6368420A (en) | 1986-09-08 | 1986-09-08 | Forming method for shutter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21128486A JPS6368420A (en) | 1986-09-08 | 1986-09-08 | Forming method for shutter valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6368420A JPS6368420A (en) | 1988-03-28 |
| JPH0355327B2 true JPH0355327B2 (en) | 1991-08-23 |
Family
ID=16603383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21128486A Granted JPS6368420A (en) | 1986-09-08 | 1986-09-08 | Forming method for shutter valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6368420A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2505278Y2 (en) * | 1990-06-26 | 1996-07-24 | 日本プラスト株式会社 | Vehicle air conditioner opening / closing damper device |
| JP3289546B2 (en) * | 1995-05-16 | 2002-06-10 | 株式会社デンソー | Resin molded product and method of manufacturing the same |
| CN104596056B (en) * | 2013-10-30 | 2017-07-18 | 广东美的制冷设备有限公司 | The air-conditioner of sealing device and the application sealing device |
| JP2022018473A (en) * | 2020-07-15 | 2022-01-27 | 株式会社イノアックコーポレーション | Vehicular duct and manufacturing method of the same |
-
1986
- 1986-09-08 JP JP21128486A patent/JPS6368420A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6368420A (en) | 1988-03-28 |
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