JP2000271967A - Mold apparatus for molding resin part - Google Patents
Mold apparatus for molding resin partInfo
- Publication number
- JP2000271967A JP2000271967A JP7975299A JP7975299A JP2000271967A JP 2000271967 A JP2000271967 A JP 2000271967A JP 7975299 A JP7975299 A JP 7975299A JP 7975299 A JP7975299 A JP 7975299A JP 2000271967 A JP2000271967 A JP 2000271967A
- Authority
- JP
- Japan
- Prior art keywords
- cavity
- gas
- diameter cylindrical
- insertion hole
- mold
- 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.)
- Granted
Links
- 229920005989 resin Polymers 0.000 title claims abstract description 41
- 239000011347 resin Substances 0.000 title claims abstract description 41
- 238000000465 moulding Methods 0.000 title claims abstract description 22
- 238000003780 insertion Methods 0.000 claims abstract description 29
- 230000037431 insertion Effects 0.000 claims abstract description 29
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 238000007789 sealing Methods 0.000 abstract description 10
- 239000000243 solution Substances 0.000 abstract 1
- 238000012545 processing Methods 0.000 description 31
- 238000012937 correction Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 14
- 238000013461 design Methods 0.000 description 8
- 230000007547 defect Effects 0.000 description 7
- 229920003002 synthetic resin Polymers 0.000 description 3
- 239000000057 synthetic resin Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 102100033029 Carbonic anhydrase-related protein 11 Human genes 0.000 description 1
- 101000867841 Homo sapiens Carbonic anhydrase-related protein 11 Proteins 0.000 description 1
- 101001075218 Homo sapiens Gastrokine-1 Proteins 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- B29C45/1734—Nozzles therefor
-
- 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
- B29C2045/1718—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 sealing or closing the fluid injection opening
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)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、射出ゲートに連な
らるキャビティを型閉じ状態で形成する複数の金型と、
前記射出ゲートからの所定量の溶融樹脂の射出完了後に
前記キャビティ内にガスを充填することを可能としたガ
ス充填ノズルとを備え、前記ガスの充填による空洞部を
有する樹脂製部品を、前記キャビティに対応した形状に
成形する樹脂製部品の金型成形装置に関する。[0001] The present invention relates to a plurality of dies for forming a cavity connected to an injection gate in a closed state,
A gas filling nozzle capable of filling a gas into the cavity after completion of injection of a predetermined amount of molten resin from the injection gate, wherein the resin component having a cavity formed by filling the gas is provided in the cavity. TECHNICAL FIELD The present invention relates to a resin molding apparatus for molding a resin component to be formed into a shape corresponding to the above.
【０００２】[0002]
【従来の技術】従来、かかる金型成形装置では、ガス充
填ノズルが、その先端面をキャビティの内面と面一に連
なるように配置されており、前記先端面に開口したテー
パ状の凹部の内端に設けられたガス充填口からキャビテ
ィ内にガスが充填されている。2. Description of the Related Art Conventionally, in such a mold forming apparatus, a gas filling nozzle is arranged so that a tip end surface thereof is flush with an inner surface of a cavity, and a gas filling nozzle is formed in a tapered recess formed in the tip end surface. The cavity is filled with gas from a gas filling port provided at the end.
【０００３】[0003]
【発明が解決しようとする課題】ところで、上記従来の
金型成形装置では、溶融樹脂が凹部の内面を伝わってガ
ス充填口にまで達することによって、先狭まりとなるテ
ーパ状の被封孔処理筒が、樹脂製部品の成形完了後に該
樹脂製部品の一端部に一体に連なるようにして形成され
ることになり、その被封孔処理筒の外端開口部を樹脂製
部品の成形完了後に封孔処理するようにしている。しか
るに凹部の内面を伝わる溶融樹脂の厚さはごく小さく、
その被封孔処理筒の壁部を貫通してガス漏れが生じ易
い。このため、製品不良が発生したり、被封孔処理筒の
形状が不安定となり、被封孔処理筒の外端開口部の封孔
処理が煩雑となってしまうことがある。By the way, in the above-mentioned conventional mold forming apparatus, the tapered sealed processing cylinder having a tapered shape in which the molten resin travels along the inner surface of the concave portion to reach the gas filling port and becomes narrower. Is formed so as to be integrally connected to one end of the resin component after the molding of the resin component, and the outer end opening of the sealed processing cylinder is sealed after the molding of the resin component is completed. Hole processing is performed. However, the thickness of the molten resin that travels along the inner surface of the recess is extremely small,
Gas leakage tends to occur through the wall of the sealed processing cylinder. For this reason, a product defect may occur, or the shape of the sealed processing tube may become unstable, and the sealing process of the outer end opening of the sealed processing tube may be complicated.
【０００４】本発明は、かかる事情に鑑みてなされたも
のであり、ガス充填ノズルからキャビティ内に充填され
るガスが漏れることを回避するとともに、被封孔処理筒
の形状の安定化を図った樹脂製部品の金型成形装置を提
供することを目的とする。The present invention has been made in view of such circumstances, and has been made to prevent the gas filled in the cavity from leaking from the gas filling nozzle and to stabilize the shape of the processing cylinder to be sealed. An object of the present invention is to provide an apparatus for molding a resin part.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、射出ゲートに連ならるキャビティを型閉
じ状態で形成する複数の金型と、前記射出ゲートからの
所定量の溶融樹脂の射出完了後に前記キャビティ内にガ
スを充填することを可能としたガス充填ノズルとを備
え、前記ガスの充填による空洞部を有する樹脂製部品
を、前記キャビティに対応した形状に成形する樹脂製部
品の金型成形装置において、前記キャビティ内に通じる
挿入孔が、前記複数の金型のうち特定の金型に設けら
れ、前記挿入孔に挿入される前記ガス充填ノズルに、挿
入孔に嵌合される大径円筒部と、前記キャビティ側に臨
む環状の段部を前記大径円筒部との間に形成して該大径
円筒部の先端に同軸に連なる小径円筒部とが設けられ、
前記小径円筒部の外面および前記段部で規定される外面
形状ならびに前記挿入孔のキャビティ側内面で規定され
る内面形状を有して前記樹脂製部品から一体に突出する
とともに樹脂製部品の成形完了後には封孔処理される円
筒状の被封孔処理筒が、前記特定の金型およびガス充填
ノズル間で形成されることを特徴とする。SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a plurality of molds for forming a cavity connected to an injection gate in a closed state, and a method for melting a predetermined amount of molten metal from the injection gate. A gas filling nozzle capable of filling the cavity with a gas after completion of the resin injection, and a resin part having a cavity formed by filling the gas into a shape corresponding to the cavity. In the device for molding a part, an insertion hole communicating with the cavity is provided in a specific mold among the plurality of dies, and is fitted into the gas filling nozzle inserted into the insertion hole. A large-diameter cylindrical portion to be provided, and a small-diameter cylindrical portion formed coaxially with a tip of the large-diameter cylindrical portion by forming an annular step facing the cavity side between the large-diameter cylindrical portion,
Having the outer surface shape defined by the outer surface of the small-diameter cylindrical portion and the step portion, and the inner surface shape defined by the inner surface of the insertion hole on the cavity side, it is integrally protruded from the resin component and molding of the resin component is completed A cylindrical processing cylinder to be subsequently sealed is formed between the specific mold and the gas filling nozzle.
【０００６】かかる構成によれば、溶融樹脂の射出後に
おけるガス充填により、前記小径円筒部の外面および前
記段部で規定される外面形状ならびに前記挿入孔のキャ
ビティ側内面で規定される内面形状を有した円筒状の被
封孔処理筒が、樹脂製部品から一体に突出するようにし
て形成されるので、被封孔処理筒の肉厚を比較的大とし
てガス漏れの発生を極力回避して製品不良の発生率を抑
えることが可能となり、また被封孔処理筒の形状を安定
化して該被封孔処理筒の外端開口部を容易に封孔処理す
ることができる。According to this configuration, the gas filling after the injection of the molten resin changes the outer surface shape defined by the outer surface of the small-diameter cylindrical portion and the step portion and the inner surface shape defined by the cavity-side inner surface of the insertion hole. Since the cylindrical sealed processing cylinder having is formed so as to protrude integrally from the resin component, the thickness of the sealed processing cylinder is made relatively large to minimize the occurrence of gas leakage. The occurrence rate of product defects can be suppressed, and the shape of the cylinder to be sealed can be stabilized, so that the outer end opening of the cylinder to be sealed can be easily sealed.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の形態を、添
付の図面に示した本発明の一実施例に基づいて説明す
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described based on one embodiment of the present invention shown in the attached drawings.
【０００８】図１〜図３は本発明の一実施例を示すもの
であり、図１は車両用アウトドアハンドルの縦断面図、
図２は型閉じ状態にある金型成形装置の縦断面図、図３
は図２の３矢示部拡大図である。1 to 3 show an embodiment of the present invention. FIG. 1 is a longitudinal sectional view of an outdoor handle for a vehicle.
FIG. 2 is a longitudinal sectional view of the mold forming apparatus in a mold closed state, and FIG.
FIG. 3 is an enlarged view of a portion indicated by an arrow 3 in FIG. 2.
【０００９】先ず図１において、この樹脂製部品は、車
両用ドアの外面側に設けられるアウトドアハンドル５で
あり、このアウトドアハンドル５は、一側面を意匠面５
ａ1として略直線状に延びる部品主部としてのハンドル
主部５ａと、該ハンドル主部５ａの長手方向一端側で前
記意匠面５ａ1 とは反対側に臨む他側面５ａ2 から前記
意匠面５ａ1 とは反対側に突出する略Ｌ字状の第１突部
５ｂと、前記ハンドル主部５ａの長手方向他端側で前記
他側面５ａ2 から前記意匠面５ａ1 とは反対側に突出す
る第２突部５ｃとを一体に有した合成樹脂製のものであ
り、第１突部５ｂの一部およびハンドル主部５ａ内には
ガスの充填による空洞部６が形成される。First, in FIG. 1, this resin part is an outdoor handle 5 provided on the outer surface side of a vehicle door.
a handle main portion 5a of the component main portion extending substantially linearly as a 1, the design surface 5a from the other side 5a 2 facing the opposite side of the design surface 5a 1 in the longitudinal direction one end side of the handle main portion 5a 1 a substantially L-shaped first projection 5b projecting on the side opposite to said at other end side in the longitudinal direction of the handle main portion 5a from the other side surface 5a 2 and the design surface 5a 1 protrudes to the opposite side It is made of a synthetic resin integrally having the second protrusion 5c, and a cavity 6 formed by gas filling is formed in a part of the first protrusion 5b and in the handle main portion 5a.
【００１０】前記第１突部５ｂは車両用ドアに回動支持
され、前記第２突部５ｃは、車両用ドアのロック装置に
連結される。The first projection 5b is rotatably supported by a vehicle door, and the second projection 5c is connected to a vehicle door lock device.
【００１１】このようなアウトドアハンドル５は、図２
で示す金型成形装置で成形されるものであり、この金型
成形装置は、型閉じ状態でアウトドアハンドル５の形状
に対応したキャビティ７を形成する複数たとえば第１〜
第５金型８，９，１０，１１，１２と、前記空洞部６を
形成するためのガスを前記キャビティ７に充填するガス
充填ノズル１３とを備える。Such an outdoor handle 5 is shown in FIG.
Are formed by a plurality of molds, such as first to first, which form a cavity 7 corresponding to the shape of the outdoor handle 5 in a mold closed state.
Fifth molds 8, 9, 10, 11, 12 and a gas filling nozzle 13 for filling the cavity 7 with a gas for forming the cavity 6 are provided.
【００１２】前記キャビティ７は、ハンドル主部５ａに
対応して略直線状に延びるキャビティ主部７ａの長手方
向一端部に第１突部５ｂに対応した第１突部形成部７ｂ
が連通するとともに、前記キャビティ主部７ａの長手方
向他端部に第２突部５ｃに対応した第２突部形成部７ｃ
が連通するものであり、第２および第３金型８，９間
に、第１突部形成部７ｂに連なる射出ゲート１４が形成
される。すなわち射出ゲート１４は、第１突部形成部７
ｂを介してキャビティ主部７ａの長手方向一端部に連な
ることになり、前記射出ゲート１４からキャビティ７に
所定量の溶融樹脂が射出される。The cavity 7 includes a first protrusion forming portion 7b corresponding to the first protrusion 5b at one longitudinal end of the cavity main portion 7a extending substantially linearly corresponding to the handle main portion 5a.
And a second protrusion forming portion 7c corresponding to the second protrusion 5c is provided at the other longitudinal end of the cavity main portion 7a.
The injection gate 14 is formed between the second and third molds 8 and 9 and communicates with the first protrusion forming portion 7b. That is, the injection gate 14 is connected to the first protrusion forming portion 7.
As a result, a predetermined amount of molten resin is injected into the cavity 7 from the injection gate 14 by being connected to one end in the longitudinal direction of the cavity main portion 7a via the line b.
【００１３】また第１〜第５金型８〜１２のうちキャビ
ティ主部７ａの他端部を形成する第１および第５金型
８，１２間に、キャビティ主部７ａからの余分な溶融樹
脂を逃がすためのオーバーフロー部１５と、キャビティ
主部７ａの他端およびオーバーフロー部１５間を結ぶフ
ィルムゲート１６とが形成され、該フィルムゲート１６
に対応する部分で第１および第５金型８，１２間の間隔
Ｌが１．５ｍｍ以下に設定される。In addition, the excess molten resin from the cavity main part 7a is provided between the first and fifth dies 8, 12 forming the other end of the cavity main part 7a among the first to fifth dies 8 to 12. Section 15 for allowing air to escape, and a film gate 16 connecting the other end of the cavity main section 7a and the overflow section 15 are formed.
Is set at a distance L between the first and fifth molds 8 and 12 of 1.5 mm or less.
【００１４】しかも第１金型８が、ハンドル主部５ａの
意匠面５ａ1 を形成する金型であるのに対して、第５金
型１２は、該意匠面５ａ1 および第２突部５ｃ間でハン
ドル主部５ａの他端に開口する肉抜き部１７（図１参
照）を形成することになる。[0014] Moreover the first mold 8, whereas a mold for forming a design surface 5a 1 of the handle main portion 5a, the fifth mold 12 is該意Takumi surface 5a 1 and the second projection 5c A lightening portion 17 (see FIG. 1) opening at the other end of the handle main portion 5a is formed therebetween.
【００１５】図３を併せて参照して、ガス充填ノズル１
３は、その先端に設けられるガス充填口１８を、アウト
ドアハンドル５内の空洞部６に対応する位置に配置する
ようにしてキャビティ７内に突入される。Referring also to FIG. 3, the gas filling nozzle 1
3 is inserted into the cavity 7 so that the gas filling port 18 provided at the tip thereof is arranged at a position corresponding to the cavity 6 in the outdoor handle 5.
【００１６】第１〜第５金型８〜１２のうちキャビティ
７の一端部他側面５ａ2 に対応した第２金型９において
前記射出ゲート１４の近傍位置には、キャビティ７内に
通じる挿入孔１９が設けられ、ガス充填ノズル１３は該
挿入孔１９に挿入される。[0016] in the vicinity of the injection gate 14 in the second mold 9 which corresponds to one end portion the other side 5a 2 of the cavity 7 of the first to fifth die 8-12 insertion hole communicating with the cavity 7 The gas filling nozzle 13 is inserted into the insertion hole 19.
【００１７】しかもガス充填ノズル１３の先端部には、
挿入孔１９に嵌合される大径円筒部２０と、キャビティ
７側に臨む環状の段部２１を前記大径円筒部２０との間
に形成して該大径円筒部２０の先端に同軸に連なる小径
円筒部２２と、小径円筒部２２よりも小径にして小径円
筒部２２の先端に同軸に連なる円筒状のノズル部２３と
が設けられており、ノズル部２３の先端にガス充填口１
８が開口される。Furthermore, at the tip of the gas filling nozzle 13,
A large-diameter cylindrical portion 20 fitted into the insertion hole 19 and an annular step 21 facing the cavity 7 are formed between the large-diameter cylindrical portion 20 and coaxial with the tip of the large-diameter cylindrical portion 20. A continuous small-diameter cylindrical portion 22 and a cylindrical nozzle portion 23 having a diameter smaller than the small-diameter cylindrical portion 22 and coaxially connected to the tip of the small-diameter cylindrical portion 22 are provided.
8 is opened.
【００１８】ところで、ガス充填ノズル１３内には冷却
水の流通路（図示せず）が設けられており、溶融樹脂に
接触するガス充填ノズル１３の先端部が過熱状態となる
ことはない。By the way, a cooling water flow passage (not shown) is provided in the gas filling nozzle 13, so that the tip of the gas filling nozzle 13 that comes into contact with the molten resin does not become overheated.
【００１９】このような金型成形装置によれば、アウト
ドアハンドル５の成形完了後には、第１突部５ｂから一
体に突出する被封孔処理筒２４が、ガス充填ノズル１３
の先端部と第２金型９との間で円筒状に形成されること
になる。すなわち、被封孔処理筒２４は、小径円筒部２
２の外面および段部２１で規定される外面形状ならびに
挿入孔１９のキャビティ７側内面で規定される内面形状
を有した円筒状に形成されるものであり、アウトドアハ
ンドル５の成形完了後に該被封孔処理筒２４の外端開口
部は、一部を被封孔処理筒２４内に嵌合せしめた合成樹
脂製の蓋部材２５を被封孔処理筒２４の外端面に溶着す
る等の封孔処理により閉じられる。According to such a mold forming apparatus, after the molding of the outdoor handle 5 is completed, the sealed hole processing cylinder 24 integrally projecting from the first projection 5b is moved to the gas filling nozzle 13.
Is formed in a cylindrical shape between the tip of the second mold 9 and the second mold 9. That is, the sealed processing cylinder 24 is formed of the small-diameter cylindrical portion 2.
2 and a cylindrical shape having an outer surface shape defined by the step 21 and an inner surface shape defined by the inner surface of the insertion hole 19 on the cavity 7 side. The outer end opening of the sealing tube 24 is sealed by welding a synthetic resin lid member 25 partially fitted into the sealing tube 24 to the outer end surface of the sealing tube 24. Closed by hole processing.
【００２０】次にこの実施例の作用について説明する
と、アウトドアハンドル５を成形するための第１〜第５
金型８〜１２のうちキャビティ主部７ａの他端部を形成
する第１および第５金型８，１２間に、キャビティ主部
７ａからの余分な溶融樹脂を逃がすためのオーバーフロ
ー部１５と、キャビティ主部７ａの他端およびオーバー
フロー部１５間を結ぶフィルムゲート１６とが形成され
るので、キャビティ主部７ａからの余分な溶融樹脂がキ
ャビティ主部７ａの他端からオーバーフロー部１５に逃
がされることになり、成形完了後のアウトドアハンドル
５におけるハンドル主部５ａの他端部で部分的に厚肉部
が生じることを防止して、引けの発生による商品性の低
下を防止することができる。Next, the operation of this embodiment will be described. First to fifth steps for molding the outdoor handle 5 will be described.
An overflow portion 15 for releasing excess molten resin from the cavity main portion 7a between the first and fifth molds 8 and 12 forming the other end of the cavity main portion 7a among the dies 8 to 12; Since the film gate 16 connecting the other end of the cavity main portion 7a and the overflow portion 15 is formed, excess molten resin from the cavity main portion 7a escapes to the overflow portion 15 from the other end of the cavity main portion 7a. Thus, it is possible to prevent a thick portion from being partially formed at the other end of the handle main portion 5a of the outdoor handle 5 after the completion of the molding, and to prevent a reduction in commerciality due to the occurrence of shrinkage.
【００２１】しかもフィルムゲート１６に対応する部分
で第１および第５金型８，１２間の間隔Ｌが１．５ｍｍ
以下に設定されており、前記間隔Ｌが１．５ｍｍ以下で
あるときには、フィルムゲート１６からオーバーフロー
部１５にガスが逃げることはないことを本発明者が実験
で確かめている。したがって、アウトドアハンドル５の
成形完了後に、フィルムゲート１６のキャビティ主部７
ａ側の端部を切断してフィルムゲート１６およびオーバ
ーフロー部１５に対応した余剰部分をアウトドアハンド
ル５から除去したときに、ハンドル主部５ａの他端部に
貫通孔が生じてしまうことはなく、貫通孔を塞ぐための
処理を施すことを不要として余分な手間を省くことがで
き、切断後の外観意匠性が劣ってしまうこともない。In addition, the distance L between the first and fifth molds 8 and 12 at the portion corresponding to the film gate 16 is 1.5 mm.
The inventor has confirmed through experiments that the gas does not escape from the film gate 16 to the overflow portion 15 when the distance L is set to 1.5 mm or less. Therefore, after the molding of the outdoor handle 5 is completed, the cavity main portion 7 of the film gate 16 is formed.
When the a-side end is cut off and the surplus portion corresponding to the film gate 16 and the overflow portion 15 is removed from the outdoor handle 5, a through hole does not occur at the other end of the handle main portion 5a. It is unnecessary to perform a process for closing the through-hole, so that extra work can be omitted, and the appearance design after cutting is not deteriorated.
【００２２】またアウトドアハンドル５におけるハンド
ル主部５ａの他端部には、該ハンドル主部５ａの意匠面
５ａ1 とは反対側に突出する第２突部５ｃが一体に連設
されており、オーバーフロー部１５およびフィルムゲー
ト１６は、前記ハンドル主部５ａの意匠面５ａ1 を形成
する第１金型８と、該意匠面５ａ1 および前記第２突部
５ｃ間でハンドル主部５ａの他端に開口する肉抜き部１
７を形成する第５金型１２との間に形成されている。こ
のような金型構造によれば、第１および第５金型８，１
２間の間隔を狭くすることが可能であり、キャビティ主
部７ａの他端部における溶融樹脂およびガスの流通方向
に沿ってフィルムゲート１６の上流側でガスの流通面積
を絞ることができ、フィルムゲート１６からオーバーフ
ロー部１５へのガスの流通をより一層効果的に遮断する
ことができる。しかもハンドル主部５ａの他端部におけ
る他側面５ａ2 に第２突部５ｃが一体に連設されている
ことにより、肉抜き部１７の形成により、ハンドル主部
５ａの他端部の肉厚が過度に薄くなることはない。[0022] At the other end of the handle main portion 5a of the outdoors handle 5, the design surface 5a 1 of the handle main portion 5a second projection 5c that protrudes to the opposite side are provided integrally, overflow part 15 and the film gate 16, the other end of the first and mold 8, the handle main portion 5a between該意Takumi surfaces 5a 1 and the second projection 5c that forms a design surface 5a 1 of the handle main portion 5a Lightening opening 1
7 and a fifth mold 12 forming the same. According to such a mold structure, the first and fifth molds 8, 1
The distance between the two can be narrowed, and the gas flow area can be reduced on the upstream side of the film gate 16 along the flow direction of the molten resin and the gas at the other end of the cavity main portion 7a. The flow of gas from the gate 16 to the overflow section 15 can be more effectively blocked. Moreover since the second protrusions 5c on the other side 5a 2 at the other end portion of the handle main part 5a is integrally connected to, the formation of the thin portion 17, the thickness of the other end portion of the handle main portion 5a Does not become too thin.
【００２３】さらにガス充填ノズル１３は、その先端に
設けられるガス充填口１８を空洞部６に対応する位置に
配置するようにしてキャビティ７内に突入される。これ
により、ガス充填ノズル１３の先端部は、アウトドアハ
ンドル５のうち空洞部６を形成する壁部を貫通すること
になり、ガス充填ノズル１３の先端部の周囲における溶
融樹脂の厚さを比較的大としてガス漏れの発生を極力回
避し、製品不良の発生率を抑えることが可能となり、ガ
ス充填口１８は充填ガスに曝されるのでガス充填口１８
の詰まりが生じることも極力防止することができる。Further, the gas filling nozzle 13 is protruded into the cavity 7 so that a gas filling port 18 provided at the tip thereof is arranged at a position corresponding to the cavity 6. As a result, the tip of the gas filling nozzle 13 penetrates the wall of the outdoor handle 5 forming the cavity 6, and the thickness of the molten resin around the tip of the gas filling nozzle 13 is relatively small. As a result, it is possible to minimize the occurrence of gas leakage and to suppress the occurrence rate of product defects, and the gas filling port 18 is exposed to the filling gas.
Can be prevented as much as possible.
【００２４】しかもキャビティ７内に通じる挿入孔１９
が第２金型９に設けられ、挿入孔１９に挿入されるガス
充填ノズル１３の先端部には、挿入孔１９に嵌合される
大径円筒部２０と、キャビティ７側に臨む環状の段部２
１を大径円筒部２０との間に形成して大径円筒部の先端
に同軸に連なる小径円筒部２２とが設けられており、溶
融樹脂の射出後におけるガス充填により、小径円筒部２
２の外面および段部２１で規定される外面形状ならびに
挿入孔１９のキャビティ７側内面で規定される内面形状
を有した円筒状の被封孔処理筒２４が、アウトドアハン
ドル５の第１突部５ｂから一体に突出するようにして第
２金型９およびガス充填ノズル１３間で形成される。し
たがって、被封孔処理筒２４の肉厚を比較的大としてガ
ス漏れの発生を極力回避して製品不良の発生率を抑える
ことが可能となり、また被封孔処理筒２４の形状を安定
化し、該被封孔処理筒２４の外端開口部を蓋部材２５の
溶着処理等で容易に封孔処理することができる。Further, the insertion hole 19 communicating with the cavity 7
Is provided in the second mold 9 and has a large-diameter cylindrical portion 20 fitted in the insertion hole 19 and an annular step facing the cavity 7 at the tip of the gas filling nozzle 13 inserted in the insertion hole 19. Part 2
1 is formed between the large-diameter cylindrical portion 20 and a small-diameter cylindrical portion 22 coaxially connected to the tip of the large-diameter cylindrical portion.
A cylindrical sealed processing tube 24 having the outer surface defined by the outer surface 2 and the outer surface shape defined by the step portion 21 and the inner surface shape defined by the inner surface of the insertion hole 19 on the cavity 7 side is the first projection of the outdoor handle 5. It is formed between the second mold 9 and the gas filling nozzle 13 so as to protrude integrally from 5b. Therefore, by making the thickness of the sealed processing tube 24 relatively large, it is possible to avoid the occurrence of gas leakage as much as possible and to suppress the occurrence rate of product defects, and to stabilize the shape of the sealed processing tube 24, The outer end opening of the sealed processing cylinder 24 can be easily sealed by welding the lid member 25 or the like.
【００２５】以上、本発明の実施例を詳述したが、本発
明は上記実施例に限定されるものではなく、特許請求の
範囲に記載された本発明を逸脱することなく種々の設計
変更を行なうことが可能である。Although the embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various design changes can be made without departing from the present invention described in the appended claims. It is possible to do.
【００２６】たとえば本発明は、車両用アウトドアハン
ドルに限定して適用されるものではなく、ガスの充填に
よる空洞部を有する樹脂製部品を成形するための金型成
形装置として広く適用可能である。For example, the present invention is not limitedly applied to an outdoor handle for a vehicle, but can be widely applied as a mold molding apparatus for molding a resin part having a cavity formed by gas filling.
【００２７】[0027]
【発明の効果】以上のように本発明によれば、被封孔処
理筒の肉厚を比較的大としてガス漏れの発生を極力回避
して製品不良の発生率を抑えることが可能となり、また
被封孔処理筒の形状を安定化して該被封孔処理筒の外端
開口部を容易に封孔処理することができる。As described above, according to the present invention, it is possible to minimize the occurrence of gas leaks by making the thickness of the processing cylinder to be sealed relatively large and to minimize the occurrence of product defects. By stabilizing the shape of the sealed processing cylinder, the outer end opening of the sealed processing cylinder can be easily sealed.
【図１】車両用アウトドアハンドルの縦断面図である。FIG. 1 is a longitudinal sectional view of an outdoor handle for a vehicle.
【図２】型閉じ状態にある金型成形装置の縦断面図であ
る。FIG. 2 is a longitudinal sectional view of the mold forming apparatus in a mold closed state.
【図３】図２の３矢示部拡大図である。FIG. 3 is an enlarged view of a portion indicated by an arrow 3 in FIG. 2;
５・・・樹脂製部品としてのアウトドアハンドル ６・・・空洞部 ７・・・キャビティ ８，９，１０，１１，１２・・・金型 １３・・・ガス充填ノズル １４・・・射出ゲート １９・・・挿入孔 ２０・・・大径円筒部 ２１・・・段部 ２２・・・小径円筒部 ２４・・・被封孔処理筒 5 ... Outdoor handle as resin part 6 ... Cavity 7 ... Cavity 8,9,10,11,12 ... Mold 13 ... Gas filling nozzle 14 ... Injection gate 19 ... Insertion hole 20 ... Large diameter cylindrical part 21 ... Step part 22 ... Small diameter cylindrical part 24 ... Seal processing cylinder
─────────────────────────────────────────────────────
────────────────────────────────────────────────── ───
【手続補正書】[Procedure amendment]
【提出日】平成１２年３月１４日（２０００．３．１
４）[Submission Date] March 14, 2000 (200.3.1)
4)
【手続補正１】[Procedure amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】特許請求の範囲[Correction target item name] Claims
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【特許請求の範囲】[Claims]
【手続補正２】[Procedure amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００５[Correction target item name] 0005
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００５】[0005]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、射出ゲートに連なるキャビティを型閉じ
状態で形成する複数の金型と、前記射出ゲートからの所
定量の溶融樹脂の射出完了後に前記キャビティ内にガス
を充填することを可能としたガス充填ノズルとを備え、
前記ガスの充填による空洞部を有する樹脂製部品を、前
記キャビティに対応した形状に成形する樹脂製部品の金
型成形装置において、前記キャビティ内に通じる挿入孔
が、前記複数の金型のうち特定の金型に設けられ、前記
挿入孔に挿入される前記ガス充填ノズルに、挿入孔に嵌
合される大径円筒部と、前記キャビティ側に臨む環状の
段部を前記大径円筒部との間に形成して該大径円筒部の
先端に同軸に連なる小径円筒部とが設けられ、前記小径
円筒部の外面および前記段部で規定される内面形状なら
びに前記挿入孔のキャビティ側内面で規定される外面形
状を有して前記樹脂製部品から一体に突出するとともに
樹脂製部品の成形完了後には封孔処理される円筒状の被
封孔処理筒が、前記特定の金型およびガス充填ノズル間
で形成されることを特徴とする。To achieve the above object of the Invention The present invention includes a plurality of mold forming in a state closing the mold the coupled cavity to the injection gate, a predetermined amount of molten resin from the injection gate A gas filling nozzle that allows the cavity to be filled with gas after the injection is completed,
In a resin part mold molding apparatus for molding a resin part having a cavity formed by filling the gas into a shape corresponding to the cavity, an insertion hole communicating with the cavity is specified among the plurality of dies. A large-diameter cylindrical portion fitted into the insertion hole, and an annular step facing the cavity side, the large-diameter cylindrical portion being provided on the gas filling nozzle inserted into the insertion hole. and a small diameter cylindrical portion continuous coaxially provided at the tip of the large diameter cylindrical portion is formed between, the plane shape and in cavity-side inner surface of the insertion hole defined by the outer surface and the step portion of the small-diameter cylindrical portion cylindrical target sealing treatment barrel after molding completion the resin component is a sealing treatment with a outer surface shape defined projects integrally from the resin component, the particular mold and gas What is formed between filling nozzles And it features.
【手続補正３】[Procedure amendment 3]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００６[Correction target item name] 0006
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【０００６】かかる構成によれば、溶融樹脂の射出後に
おけるガス充填により、前記小径円筒部の外面および前
記段部で規定される内面形状ならびに前記挿入孔のキャ
ビティ側内面で規定される外面形状を有した円筒状の被
封孔処理筒が、樹脂製部品から一体に突出するようにし
て形成されるので、被封孔処理筒の肉厚を比較的大とし
てガス漏れの発生を極力回避して製品不良の発生率を抑
えることが可能となり、また被封孔処理筒の形状を安定
化して該被封孔処理筒の外端開口部を容易に封孔処理す
ることができる。[0006] According to such a configuration, a gas-filled after the injection of the molten resin, the outer surface defined by the cavity-side inner surface of the small-diameter cylindrical portion of the outer surface and the stepped plane defined by the unit shape and the insertion hole Since the cylindrical sealed processing cylinder having a shape is formed so as to protrude integrally from the resin component, the thickness of the sealed processing cylinder is made relatively large to minimize the occurrence of gas leakage. As a result, the occurrence rate of product defects can be suppressed, and the shape of the tube to be sealed can be stabilized, so that the opening at the outer end of the tube to be sealed can be easily sealed.
【手続補正４】[Procedure amendment 4]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１９[Correction target item name] 0019
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００１９】このような金型成形装置によれば、アウト
ドアハンドル５の成形完了後には、第１突部５ｂから一
体に突出する被封孔処理筒２４が、ガス充填ノズル１３
の先端部と第２金型９との間で円筒状に形成されること
になる。すなわち、被封孔処理筒２４は、小径円筒部２
２の外面および段部２１で規定される内面形状ならびに
挿入孔１９のキャビティ７側内面で規定される外面形状
を有した円筒状に形成されるものであり、アウトドアハ
ンドル５の成形完了後に該被封孔処理筒２４の外端開口
部は、一部を被封孔処理筒２４内に嵌合せしめた合成樹
脂製の蓋部材２５を被封孔処理筒２４の外端面に溶着す
る等の封孔処理により閉じられる。According to such a mold forming apparatus, after the molding of the outdoor handle 5 is completed, the sealed hole processing cylinder 24 integrally projecting from the first projection 5b is moved to the gas filling nozzle 13.
Is formed in a cylindrical shape between the tip of the second mold 9 and the second mold 9. That is, the sealed processing cylinder 24 is formed of the small-diameter cylindrical portion 2.
It is intended to be formed on the second outer surface and the plane defined by the stepped portion 21 shape and a cylindrical shape having an outer surface shape defined by the cavity 7 side inner surface of the insertion hole 19, after molding completion seating handle 5 The outer end opening of the sealed processing tube 24 is welded to the outer end surface of the sealed processing tube 24 with a synthetic resin lid member 25 partially fitted in the sealed processing tube 24. Is closed by sealing.
【手続補正５】[Procedure amendment 5]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００２４[Correction target item name] 0024
【補正方法】変更[Correction method] Change
【補正内容】[Correction contents]
【００２４】しかもキャビティ７内に通じる挿入孔１９
が第２金型９に設けられ、挿入孔１９に挿入されるガス
充填ノズル１３の先端部には、挿入孔１９に嵌合される
大径円筒部２０と、キャビティ７側に臨む環状の段部２
１を大径円筒部２０との間に形成して大径円筒部の先端
に同軸に連なる小径円筒部２２とが設けられており、溶
融樹脂の射出後におけるガス充填により、小径円筒部２
２の外面および段部２１で規定される内面形状ならびに
挿入孔１９のキャビティ７側内面で規定される外面形状
を有した円筒状の被封孔処理筒２４が、アウトドアハン
ドル５の第１突部５ｂから一体に突出するようにして第
２金型９およびガス充填ノズル１３間で形成される。し
たがって、被封孔処理筒２４の肉厚を比較的大としてガ
ス漏れの発生を極力回避して製品不良の発生率を抑える
ことが可能となり、また被封孔処理筒２４の形状を安定
化し、該被封孔処理筒２４の外端開口部を蓋部材２５の
溶着処理等で容易に封孔処理することができる。Further, the insertion hole 19 communicating with the cavity 7
Is provided in the second mold 9 and has a large-diameter cylindrical portion 20 fitted in the insertion hole 19 and an annular step facing the cavity 7 at the tip of the gas filling nozzle 13 inserted in the insertion hole 19. Part 2
1 is formed between the large-diameter cylindrical portion 20 and a small-diameter cylindrical portion 22 coaxially connected to the tip of the large-diameter cylindrical portion.
2 of the outer surface and the step portion 21 cylindrical target sealing treatment tube 24 having an outer surface shape defined plane shape and in the cavity 7 side inner surface of the insertion hole 19 defined by the first outdoor handle 5 It is formed between the second mold 9 and the gas filling nozzle 13 so as to protrude integrally from the protrusion 5b. Therefore, by making the thickness of the sealed processing tube 24 relatively large, it is possible to avoid the occurrence of gas leakage as much as possible and to suppress the occurrence rate of product defects, and to stabilize the shape of the sealed processing tube 24, The outer end opening of the sealed processing cylinder 24 can be easily sealed by welding the lid member 25 or the like.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 井上 潤一 宮崎県宮崎郡佐土原町大字下那珂字和田山 3700番地株式会社ホンダロック内 (72)発明者 郷原 弘 宮崎県宮崎郡佐土原町大字下那珂字和田山 3700番地株式会社ホンダロック内 Ｆターム(参考） 4F202 AG07 AH18 AM32 CA11 CB01 CK06 CK07 CK86 CK89 CN05 4F206 AG07 AH18 AM32 JA05 JN27 JQ81 JW23 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Junichi Inoue Odayama, Miyazaki-gun, Miyazaki-gun, 3700 Wadayama, Honda Rock Co., Ltd. 3700 Wadayama F-term in Honda Lock Co., Ltd. (reference) 4F202 AG07 AH18 AM32 CA11 CB01 CK06 CK07 CK86 CK89 CN05 4F206 AG07 AH18 AM32 JA05 JN27 JQ81 JW23
Claims (1)
（７）を型閉じ状態で形成する複数の金型（８，９，１
０，１１，１２）と、前記射出ゲート（１４）からの所
定量の溶融樹脂の射出完了後に前記キャビティ（７）内
にガスを充填することを可能としたガス充填ノズル（１
３）とを備え、前記ガスの充填による空洞部（６）を有
する樹脂製部品（５）を、前記キャビティ（７）に対応
した形状に成形する樹脂製部品の金型成形装置におい
て、前記キャビティ（７）内に通じる挿入孔（１９）
が、前記複数の金型（８〜１２）のうち前記キャビティ
（７）の一端部に対応した特定の金型（９）に設けら
れ、前記挿入孔（１９）に挿入される前記ガス充填ノズ
ル（１３）に、挿入孔（１９）に嵌合される大径円筒部
（２０）と、前記キャビティ（７）側に臨む環状の段部
（２１）を前記大径円筒部（２０）との間に形成して該
大径円筒部（２０）の先端に同軸に連なる小径円筒部
（２２）とが設けられ、前記小径円筒部（２２）の外面
および前記段部（２１）で規定される外面形状ならびに
前記挿入孔（１９）のキャビティ（７）側内面で規定さ
れる内面形状を有して前記樹脂製部品（５）から一体に
突出するとともに樹脂製部品（５）の成形完了後には封
孔処理される円筒状の被封孔処理筒（２４）が、前記特
定の金型（９）およびガス充填ノズル（１３）間で形成
されることを特徴とする樹脂製部品の金型成形装置。A plurality of molds (8, 9, 1) for forming a cavity (7) connected to an injection gate (14) in a mold closed state.
0,11,12) and a gas filling nozzle (1) capable of filling the cavity (7) with gas after the injection of a predetermined amount of molten resin from the injection gate (14) is completed.
3) wherein the resin component (5) having a cavity (6) formed by filling with the gas is molded into a shape corresponding to the cavity (7). (7) Insertion hole (19) leading into
Is provided in a specific mold (9) corresponding to one end of the cavity (7) among the plurality of molds (8 to 12), and is inserted into the insertion hole (19). (13) The large-diameter cylindrical portion (20) fitted into the insertion hole (19) and the annular step (21) facing the cavity (7) side are combined with the large-diameter cylindrical portion (20). A small-diameter cylindrical portion (22) is formed between the small-diameter cylindrical portion (22) and coaxially connected to the tip of the large-diameter cylindrical portion (20), and is defined by the outer surface of the small-diameter cylindrical portion (22) and the step (21). It has an outer surface shape and an inner surface shape defined by the inner surface of the insertion hole (19) on the cavity (7) side, and integrally protrudes from the resin component (5), and after completion of molding of the resin component (5). The cylinder to be sealed (24) to be sealed is provided with the specific mold (9) and the specific mold (9). Scan filling nozzle (13) while being formed by molding apparatus of the resin component according to claim.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7975299A JP3515700B2 (en) | 1999-03-24 | 1999-03-24 | Molding equipment for resin parts |
| US09/532,947 US6371747B1 (en) | 1999-03-24 | 2000-03-22 | Die molding apparatus for resin article |
| GB0006950A GB2350316B (en) | 1999-03-24 | 2000-03-23 | Die molding apparatus for resin article |
| GB0107146A GB2360486B (en) | 1999-03-24 | 2000-03-23 | Die molding apparatus for resin article |
| CN00108361A CN1119223C (en) | 1999-03-24 | 2000-03-24 | Matched-mold forming device for producing resin product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7975299A JP3515700B2 (en) | 1999-03-24 | 1999-03-24 | Molding equipment for resin parts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000271967A true JP2000271967A (en) | 2000-10-03 |
| JP3515700B2 JP3515700B2 (en) | 2004-04-05 |
Family
ID=13698967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7975299A Expired - Fee Related JP3515700B2 (en) | 1999-03-24 | 1999-03-24 | Molding equipment for resin parts |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3515700B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008087484A1 (en) * | 2007-01-11 | 2008-07-24 | Itw Automotive Products Gmbh & Co. Kg | Method for injection molding of hollow articles of plastic material |
-
1999
- 1999-03-24 JP JP7975299A patent/JP3515700B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008087484A1 (en) * | 2007-01-11 | 2008-07-24 | Itw Automotive Products Gmbh & Co. Kg | Method for injection molding of hollow articles of plastic material |
| US7998395B2 (en) | 2007-01-11 | 2011-08-16 | Itw Automotive Products Gmbh & Co. Kg | Method for injection molding of hollow articles of plastic material |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3515700B2 (en) | 2004-04-05 |
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