JP3259673B2 - Mold for molding ejector head for liquid discharge container - Google Patents
Mold for molding ejector head for liquid discharge containerInfo
- Publication number
- JP3259673B2 JP3259673B2 JP36332197A JP36332197A JP3259673B2 JP 3259673 B2 JP3259673 B2 JP 3259673B2 JP 36332197 A JP36332197 A JP 36332197A JP 36332197 A JP36332197 A JP 36332197A JP 3259673 B2 JP3259673 B2 JP 3259673B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- ejector head
- head
- discharge passage
- nozzle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Closures For Containers (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は内容液をポンプを利用し
て取り出す液体吐出用容器におけるプラスチック製の液
体吐出容器用のイジェクタヘッドの成形用金型に関す
る。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold for molding an ejector head for a liquid discharge container made of plastic in a liquid discharge container for taking out a content liquid by using a pump.
You.
【０００２】[0002]
【従来の技術】液体吐出用容器における液体容器のイジ
ェクタヘッドは実開昭５９−８６３７１号公報に示すよ
うに、ノズル部の吐出通路孔は流入口から吐出口まで全
長を通してほぼ同一断面形状でイジェクタヘッドの中空
部と連通し、容器本体の口部から起立する作動部材の上
下動により容器本体の内液体がシリンダへ吸い込まれる
と共に、イジェクタヘッドのノズル部から吐出する構造
となっている。2. Description of the Related Art As shown in Japanese Utility Model Laid-Open Publication No. 59-86371, the ejector head of a liquid container in a liquid discharge container has a discharge passage hole of a nozzle portion having substantially the same cross-sectional shape throughout the entire length from the inflow port to the discharge port. The structure is such that the liquid inside the container body is sucked into the cylinder and discharged from the nozzle part of the ejector head by the vertical movement of the operating member rising from the mouth of the container body, communicating with the hollow part of the head body.
【０００３】[0003]
【発明が解決しようとする課題】従来の液体吐出用容器
にあっては、ヘッド本体の中空部内のボール弁のボール
がノズル部の吐出口の径より小さい場合、ボールが流入
口より吐出通路孔に流入し内容液とともに容器外へ流出
する。大きい場合にはボールが流入口の開口部を塞ぎ、
内容物の流出を阻害する。そのためストッパーとしてイ
ジェクタヘッドの中空部天面よりボール弁の上昇を阻止
するセンターピンが設けてあるが、このセンターピンを
長く成形することは射出成形上問題があった。また、イ
ジェクタヘッドの射出成形においては、ノズル部先端の
湾曲部を成形する際、湾曲部を直線状に延ばし無理に孔
成形用ピン金型を引き抜き成形するため、成形終了時、
ノズル部先端が元の湾曲形状に復元する瞬間、孔成形用
ピン金型の端面の角部に接触し、内面に引っ掻き傷が発
生するという問題があった。本発明はボール弁が吐出通
路孔に流入し内容液とともに外部に吐出すること及び開
口部を塞ぐことが防止されるとともにセンターピンを短
くすることができ、また、ノズル部の先端の傷付の発生
も防止されたイジェクタヘッドを成型可能な成型用金型
の提供を目的とする。 In the conventional liquid discharge container, when the ball of the ball valve in the hollow portion of the head body is smaller than the diameter of the discharge port of the nozzle portion, the ball moves from the inflow port to the discharge passage hole. And flows out of the container together with the content liquid. If large, the ball closes the opening of the inlet,
Inhibits outflow of contents. Therefore, a center pin is provided as a stopper for preventing the ball valve from rising from the top surface of the hollow portion of the ejector head. However, forming this center pin longer has a problem in injection molding. Also, in the injection molding of the ejector head, when the curved portion at the tip of the nozzle portion is molded, the curved portion is extended linearly and the pin forming pin mold is forcibly pulled and molded.
At the moment when the tip of the nozzle portion is restored to the original curved shape, there is a problem in that it comes into contact with the corner of the end face of the hole forming pin mold, and scratches are generated on the inner surface. In the present invention, the ball valve is
Flow into the road hole and discharge to the outside together with the content liquid and open
This prevents the mouth from being blocked and shortens the center pin.
And damage to the tip of the nozzle
Mold that can mold ejector heads that are also prevented
The purpose is to provide.
【０００４】[0004]
【問題を解決するための手段】そこで、上記目的を解決
するため本発明のイジェクタヘッドの成型金型において
成型されるイジェクタヘッドは、中心部に内容液を吸い
上げる作動部材のステムが挿入される中空部を備え、中
空部と連通する吐出通路孔を備えるノズル部を有し、中
空部側の流入口の開口部の断面形状は少なくとも一部に
直線を有する形状で、開口部の最小幅をボール弁のボー
ル径より小さくしたものである。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a mold for molding an ejector head according to the present invention is provided.
The ejector head to be molded has a hollow portion into which a stem of an operating member for sucking up the content liquid is inserted at a center portion, and has a nozzle portion having a discharge passage hole communicating with the hollow portion. The cross-sectional shape of the opening is a shape having a straight line at least partially, and the minimum width of the opening is smaller than the ball diameter of the ball valve.
【０００５】 また、中心部に内容液を吸い上げる作動
部材が挿入される中空部を備え、先端が下方に湾曲し、
中空部と連通する吐出通路孔を備えるノズル部を有する
ノズル部付イジェクタヘッドであって、イジェクタヘッ
ドの吐出通路孔内部に挿入される孔成形用ピン流入口側
端部の上面または下面の少なくとも一方に平坦部を設
け、かつ、前記ピン金型端部の端面の角部全周または一
部にＲまたはほぼ４５度に面取りを施した金型としたも
のある。In addition, a central portion is provided with a hollow portion into which an operating member for sucking up the content liquid is inserted, and the tip is curved downward,
An ejector head with a nozzle portion having a nozzle portion provided with a discharge passage hole communicating with a hollow portion, wherein at least one of an upper surface or a lower surface of a hole forming pin inflow port side end inserted into the discharge passage hole of the ejector head. A flat portion is provided, and the entire periphery or a part of the corner of the end surface of the pin mold is chamfered to R or approximately 45 degrees.
【０００６】[0006]
【発明の実施の態様】第１図にイジェクタヘッド１を示
す。イジェクタヘッド１はへッド本体２と、このヘッド
本体２の下方に一体的に延びてヘッド本体とポンプ作動
部材（図示せず）から突出する操作軸を接続するための
継手部３と、ヘッド本体の側方に突出するノズル部６と
によって構成され、ノズル部は先端が下方に湾曲する湾
曲部９を備え、ヘッド本体内部の中空部４まで延びる吐
出通路孔７が設けられている。吐出通路孔７の流入口１
０側端部下面１１は平坦面となっており、中空部との間
の鍔部１２を肉厚の構造とする。中空部４の天面中央に
はセンターピン５が備えられボール弁１３の上昇を防止
してる。第５図は流入口１０開口部の形状を示す。１４
は開口部上面より垂れ下がった薄肉部である。流入口の
開口部は下方部分の一部に直線部を持つ円形状をなって
おり、最小幅はボール弁ボール径より小となっている。
従って、内容液の吐出には何ら支障はなく、ボール弁が
内容液とともに吐出通路孔を通って排出されることもな
い。ここで、開口部の最大幅はボール径より大きくても
小さくでもよく、開口部形状は矩形でも問題ない。ま
た、開口部を上記のような寸法関係にすることで、ボー
ル弁の上昇を阻止するセンターピンを削除することも可
能である。FIG. 1 shows an ejector head 1. The ejector head 1 includes a head body 2, a joint 3 extending integrally below the head body 2 and connecting an operation shaft projecting from a pump operating member (not shown) to the head body, and a head 3. A nozzle portion 6 protruding to the side of the main body, the nozzle portion includes a curved portion 9 whose tip is curved downward, and a discharge passage hole 7 extending to the hollow portion 4 inside the head main body is provided. Inflow port 1 of discharge passage hole 7
The 0-side end lower surface 11 is a flat surface, and the flange 12 between the hollow and the hollow portion has a thick structure. A center pin 5 is provided at the center of the top surface of the hollow portion 4 to prevent the ball valve 13 from rising. FIG. 5 shows the shape of the opening of the inlet 10. 14
Is a thin portion hanging down from the upper surface of the opening. The opening of the inflow port has a circular shape having a straight portion at a part of the lower portion, and the minimum width is smaller than the ball diameter of the ball valve.
Accordingly, there is no problem in discharging the content liquid, and the ball valve is not discharged together with the content liquid through the discharge passage hole. Here, the maximum width of the opening may be larger or smaller than the ball diameter, and the shape of the opening may be rectangular. In addition, by setting the opening in the above-described dimensional relationship, it is possible to eliminate the center pin that prevents the ball valve from rising.
【０００７】このヘッド本体２は射出成形によって成形
される。第２図には型成形する際の成形金型の全体構成
を示す。すなわち、成形金型２０は下型２１と上型２２
と、ノズル部６の吐出通路孔７を形成するための孔成形
用ピン２３を備えるスライドコア２４からなり、下型２
１にはネジ形成型２５と中空部成形型２６が組み込まれ
ている。The head body 2 is formed by injection molding. FIG. 2 shows the overall configuration of a molding die for molding. That is, the molding die 20 includes the lower die 21 and the upper die 22.
And a slide core 24 having a hole forming pin 23 for forming the discharge passage hole 7 of the nozzle portion 6.
1, a screw forming die 25 and a hollow forming die 26 are incorporated.
【０００８】第３、４図は孔成形用ピンが抜かれ、ノズ
ル部が成形される状態を示す。下型２１と上型２２を型
締めしてキャビティ内に溶融した樹脂材料を射出し、イ
ジェクタヘッドを成形する。成形品としての冷却固化さ
れたイジェクタヘッドをヘッド本体２を離型させる際に
は、まず上型２２を外し、次ぎに下型２１はイジェクタ
ヘッドを保持したまま孔成形用ピン２３を引き抜く。ス
ライドコア２４は下型のスライド面２５上を金型外方に
スライドして移動し、孔成形用ピン２３を吐出通路孔７
から抜き出した後ヘッド本体２を離型する。この場合、
ノズル部６先端の湾曲部８は孔成形用ピン２３で無理に
引き抜きされるため、図示されるように一旦直線状とな
り、孔成形用ピン２３が抜けた後点線出示す元の湾曲状
９の戻る。第６図の拡大図に示すように、従来の金型形
状によると、吐出通路孔７の断面形状は各部ほぼ同一寸
法の円形で、孔成形用ピン２３の流入口側端部３１角部
３２は全周鋭利であるため、孔成形用ピン２３を抜き取
る最終段階でノズル部６先端内面は、元に復元する際ピ
ンの角部と接触し囓り傷をつけることがしばしばあっ
た。本発明の金型にあっては、第４図は第３図Ａ部拡大
図である。第４図に示すように、孔成形用ピン２３の開
口部側端部３１の下端を平面に削り取り平坦部３３と
し、断面形状をほぼ半円形状とする（第５図）。端面角
部３２の全周または上方の一部はＲかほぼ４５度に面取
りをする。このような形状とすることで、第４図に示す
ように、孔成形用ピンを無理抜きする際ピン２３の下端
３３はノズル部６の下端部には接触せず、また、ノズル
部の上面にはＲ部が接触するため、吐出口内面に囓り傷
を付けることが防止される。FIGS. 3 and 4 show a state in which the hole forming pin is removed and the nozzle portion is formed. The lower mold 21 and the upper mold 22 are clamped, and the molten resin material is injected into the cavity to form an ejector head. When the ejected head, which has been cooled and solidified as a molded product, is released from the head body 2, first, the upper die 22 is removed, and then the lower die 21 is pulled out of the hole forming pin 23 while holding the ejector head. The slide core 24 slides and moves on the slide surface 25 of the lower die to the outside of the die, and the pin 23 for forming the hole is moved to the discharge passage hole 7.
Then, the head body 2 is released from the mold. in this case,
Since the curved portion 8 at the tip of the nozzle portion 6 is forcibly pulled out by the hole forming pin 23, the curved portion 8 once becomes linear as shown in the figure, and after the hole forming pin 23 comes off, the original curved shape 9 shown by a dotted line appears. Return. As shown in the enlarged view of FIG. 6, according to the conventional mold shape, the cross-sectional shape of the discharge passage hole 7 is a circle having almost the same dimensions at each portion, and the inlet-side end 31 of the hole forming pin 23 has a corner 32 Because of the sharpness of the entire circumference, the inner surface of the tip of the nozzle 6 at the final stage of extracting the hole-forming pin 23 often comes into contact with the corner of the pin when it is restored to its original state, causing scratches. FIG. 4 is an enlarged view of a part A in FIG. 3 in the mold of the present invention. As shown in FIG. 4, the lower end of the opening side end 31 of the hole forming pin 23 is cut into a flat surface to form a flat portion 33, and the cross-sectional shape is made substantially semicircular (FIG. 5). The entire circumference or a part of the upper portion of the end face corner 32 is chamfered to R or approximately 45 degrees. With such a shape, the lower end 33 of the pin 23 does not contact the lower end of the nozzle portion 6 when the hole forming pin is forcibly removed, as shown in FIG. Is in contact with the R portion, thereby preventing the inner surface of the discharge port from being scratched.
【０００９】[0009]
【発明の効果】本発明は以上説明したように構成されて
いるので、以下に記載されるような効果を奏する。本発
明の成型用金型によって成型されるイジェクタヘッド
は、イジェクタヘッドの吐出通路孔の開口部からボール
弁が排出されることがなく、且つ開口部を塞ぐことも防
止できる。また、センターピンも短くするか削除でき射
出成形が容易となるとともに、吐出通路孔端部の鍔部の
強度を保持でき、ボール弁の接触による破損が防止でき
る。また、イジェクタヘッドを金型内から離型する際に
発生するノズル部先端内面の傷を防止でき、品質の安定
を図ることができる。Since the present invention is configured as described above, it has the following effects. Departure
Ejector head molded by Ming's mold
This prevents the ball valve from being discharged from the opening of the discharge passage hole of the ejector head and prevents the opening from being closed. In addition, the center pin can be shortened or eliminated, so that injection molding can be facilitated, the strength of the flange at the end of the discharge passage hole can be maintained, and breakage due to contact of the ball valve can be prevented. Further, it is possible to prevent the inner surface of the nozzle tip from being damaged when the ejector head is released from the mold, thereby stabilizing the quality.
【図１】イジェクタヘッドの断面図である。FIG. 1 is a sectional view of an ejector head.
【図２】イジェクタヘッド成形中の金型の断面図であ
る。FIG. 2 is a sectional view of a mold during molding of an ejector head.
【図３】孔成形用ピンをイジェクタヘッドから抜き取る
状態図である。FIG. 3 is a diagram illustrating a state where a hole forming pin is extracted from an ejector head.
【図４】第３図Ａ部拡大図である。FIG. 4 is an enlarged view of a portion A in FIG. 3;
【図５】流入口開口部の形状を示す図である。FIG. 5 is a view showing the shape of an inflow opening.
【図６】従来の孔成形用ピンとノズル部先端の状態図で
ある。FIG. 6 is a state diagram of a conventional hole forming pin and a tip of a nozzle portion.
１ イジェクタヘッド ２ ヘッド本体 ３ 継手部 ４ 中空部 ５ センターピン ６ ノズル部 ７ 吐出通路孔 ８ 吐出口 ９ 湾曲部 １０ 流入口 １１ 平坦部 １２ 鍔部 １３ ボール弁 ２０ 成形金型 ２１ 下型 ２２ 上型 ２３ 孔成形用ピン ２４ スライドコ
ア ２５ スライド面 ３１ 開口部側端
部 ３２ 角部 ３３ 平坦部DESCRIPTION OF SYMBOLS 1 Ejector head 2 Head main body 3 Joint part 4 Hollow part 5 Center pin 6 Nozzle part 7 Discharge passage hole 8 Discharge port 9 Curved part 10 Inflow port 11 Flat part 12 Flange part 13 Ball valve 20 Mold 21 Lower mold 22 Upper mold 23 Pin for Forming Hole 24 Slide Core 25 Slide Surface 31 Opening Side End 32 Corner 33 Flat
Claims (2)
挿入される中空部を備え、先端が下方に湾曲し、中空部
と連通する吐出通路孔を備えるノズル部を有するノズル
部付イジェクタヘッドの射出成形において、イジェクタ
ヘッドの吐出通路孔に挿入される孔成形用ピンの流入口
側端部の上面または下面の少なくとも一方に平坦部を設
け、孔成形用ピンの端面角部を面取りした液体吐出容器
用イジェクタヘッドの成形用金型。 An operating member for sucking a liquid content is provided at a central portion.
With a hollow part to be inserted, the tip curves downward, the hollow part
Having a nozzle portion having a discharge passage hole communicating with the nozzle
In the injection molding of the ejector head with
Inlet for hole forming pin inserted into discharge passage hole of head
A flat part is provided on at least one of the upper and lower surfaces of the side end.
Liquid ejection container with chamfered corners
Mold for molding the ejector head.
周または一部にＲまたはほぼ４５度に面取りが施してあ
る請求項１記載の液体吐出容器用イジェクタヘッドの成
形用金型。 2. An entire end face corner of the end of the hole forming pin.
Circumferentially or partly rounded or approximately 45 degrees
The ejector head for a liquid discharge container according to claim 1,
Mold for shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36332197A JP3259673B2 (en) | 1997-12-16 | 1997-12-16 | Mold for molding ejector head for liquid discharge container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP36332197A JP3259673B2 (en) | 1997-12-16 | 1997-12-16 | Mold for molding ejector head for liquid discharge container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11171229A JPH11171229A (en) | 1999-06-29 |
| JP3259673B2 true JP3259673B2 (en) | 2002-02-25 |
Family
ID=18479041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP36332197A Expired - Fee Related JP3259673B2 (en) | 1997-12-16 | 1997-12-16 | Mold for molding ejector head for liquid discharge container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3259673B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090108023A1 (en) * | 2007-10-24 | 2009-04-30 | Houghton Weston R | Dispenser pump head for controlling misdirection |
| JP5476093B2 (en) * | 2009-10-30 | 2014-04-23 | 株式会社吉野工業所 | Push-pull cap and mold for pouring channel |
-
1997
- 1997-12-16 JP JP36332197A patent/JP3259673B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11171229A (en) | 1999-06-29 |
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