JPS6232811Y2 - - Google Patents
Info
- Publication number
- JPS6232811Y2 JPS6232811Y2 JP1980044365U JP4436580U JPS6232811Y2 JP S6232811 Y2 JPS6232811 Y2 JP S6232811Y2 JP 1980044365 U JP1980044365 U JP 1980044365U JP 4436580 U JP4436580 U JP 4436580U JP S6232811 Y2 JPS6232811 Y2 JP S6232811Y2
- Authority
- JP
- Japan
- Prior art keywords
- drive rod
- resin
- resin passage
- adapter
- valve
- 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
- 239000011347 resin Substances 0.000 claims description 54
- 229920005989 resin Polymers 0.000 claims description 54
- 239000007788 liquid Substances 0.000 claims description 8
- 238000001746 injection moulding Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims 1
- 239000000945 filler Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/801—Valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/582—Component parts, details or accessories; Auxiliary operations for discharging, e.g. doors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Seal Device For Vehicle (AREA)
Description
【考案の詳細な説明】
この考案は樹脂通路が穿設されたバルブ・ボデ
イー、該樹脂通路中に設けられた弁座、該弁座に
当接離脱するチエツク・ボール、該チエツク・ボ
ールを付勢する駆動杆とから成る液状樹脂射出成
形機用の樹脂通路切換弁に関するものであり、特
に、前記駆動杆の先端にポペツトを装着し、該ポ
ペツトと前記駆動杆との間には上記樹脂通路と上
記駆動杆が摺動されるシリンダー孔とを遮断する
ダイアフラムを挟持している樹脂通路切換弁に係
わるものである。[Detailed description of the invention] This invention consists of a valve body in which a resin passage is bored, a valve seat provided in the resin passage, a check ball that comes into contact with and leaves the valve seat, and a valve body equipped with the check ball. The present invention relates to a resin passage switching valve for a liquid resin injection molding machine, which comprises a drive rod that moves, and in particular, a poppet is attached to the tip of the drive rod, and the resin passage is provided between the poppet and the drive rod. This relates to a resin passage switching valve which holds a diaphragm between the cylinder hole and the cylinder hole through which the drive rod slides.
周知の如く、液状樹脂の射出成形においては一
定量の樹脂を混合装置、ノズルを介して金型内に
供給圧入するための計量ポンプが必要である。該
計量ポンプは樹脂供給源から所望の液状樹脂を吸
引導入し、しかる後、樹脂通路を切換えて混合装
置に対して加圧供給するものである。かかる樹脂
通路の切換えに使用される切換弁は前記計量ポン
プの導入導出動作に同期して作動するものであ
る。そして該切換弁は計量ポンプの導入側と導出
側にそれぞれ配置され、樹脂の導入に際しては導
入側切換弁を開に、導出側切換弁を閉にし、又、
樹脂の導出に際しては上記とは逆に導入側切換弁
を閉に、導出側切換弁を開にしてそれぞれ樹脂通
路の切換えを行なうものである。 As is well known, injection molding of liquid resin requires a mixing device and a metering pump for supplying and pressurizing a certain amount of resin into a mold via a nozzle. The metering pump sucks and introduces a desired liquid resin from a resin supply source, and then switches the resin passage to supply the resin under pressure to the mixing device. The switching valve used to switch the resin passage is operated in synchronization with the introduction/extraction operation of the metering pump. The switching valves are respectively arranged on the inlet side and the outlet side of the metering pump, and when introducing resin, the inlet side switching valve is opened and the outlet side switching valve is closed.
When drawing out the resin, the inlet side switching valve is closed and the outlet side switching valve is opened to switch the resin passages, contrary to the above.
このような切換弁においては種々のものがある
が、通常第１図及び第２図に示す様なものが最も
一般的に使用されている。即ち、図において１は
バルブ・ボデイーであり、垂直通路２ａと水平通
路２ｂとから成るＬ字形樹脂通路２が穿設されて
いる。又、該バルブ・ボデイー１には前記垂直通
路２ａと同軸配置された駆動杆用開口３が穿設さ
れており、該駆動杆用開口３は前記樹脂通路２に
開口している。４は弁座であり上記樹脂通路２中
に設けられている。５はチエツク・ボールで前記
弁座４上に載置されている。 There are various types of such switching valves, but the ones shown in FIGS. 1 and 2 are most commonly used. That is, in the figure, 1 is a valve body, in which an L-shaped resin passage 2 consisting of a vertical passage 2a and a horizontal passage 2b is bored. Further, the valve body 1 is provided with a driving rod opening 3 coaxially arranged with the vertical passage 2a, and the driving rod opening 3 opens into the resin passage 2. A valve seat 4 is provided in the resin passage 2. 5 is a check ball placed on the valve seat 4.
一方、６はアダプターであり前記バルブ・ボデ
イー１上に装着されている。該アダプター６には
シリンダー孔７が穿設されており、該シリンダー
孔７は前記駆動杆用開口３に同軸整合している。
８は該シリンダー孔７内に摺動自在に挿入された
駆動杆で、該駆動杆８の先端は上記チエツク・ボ
ール５に当接している。尚、８ａは該駆動杆８の
作動部材である。 On the other hand, 6 is an adapter mounted on the valve body 1. A cylinder hole 7 is bored in the adapter 6, and the cylinder hole 7 is coaxially aligned with the drive rod opening 3.
A driving rod 8 is slidably inserted into the cylinder hole 7, and the tip of the driving rod 8 is in contact with the check ball 5. Note that 8a is an actuating member of the drive rod 8.
かかる構成において、第１図に示すように、作
動部材８ａを介して流体圧もしくはバネ圧を駆動
杆８に作用させると該駆動杆８はチエツク・ボー
ル５を下方に付勢し、弁座４に対して当接する。
かくして垂直通路２ａと水平通路２ｂは遮断さ
れ、樹脂は樹脂通路２中を流れない。 In this configuration, as shown in FIG. 1, when fluid pressure or spring pressure is applied to the drive rod 8 via the actuating member 8a, the drive rod 8 urges the check ball 5 downward, and the valve seat 4 come into contact with.
Thus, the vertical passage 2a and the horizontal passage 2b are blocked, and the resin does not flow through the resin passage 2.
一方、駆動杆８に対する流体圧もしくはバネ圧
を解除すると、計量ポンプの吸引力もしくは吐出
力によつて垂直通路２ａ内の液状樹脂はチエツ
ク・ボール５及び駆動杆８を押し上げ、弁座４と
該チエツク・ボール５との間に生じた間隙を通つ
て矢印の如く水平通路２ｂに流過するものであ
る。 On the other hand, when the fluid pressure or spring pressure on the drive rod 8 is released, the liquid resin in the vertical passage 2a pushes up the check ball 5 and the drive rod 8 due to the suction force or discharge force of the metering pump, and the valve seat 4 and the It flows into the horizontal passage 2b as shown by the arrow through the gap formed between the check ball 5 and the check ball 5.
而して、上記構成の樹脂通路切換弁では駆動杆
８及びシリンダー孔７からなる摺動部は駆動杆用
開口３を介して樹脂通路２に連通しているので、
液状樹脂中に含まれるフイラーが前記摺動部に混
入するという現象を伴う。このため、駆動杆の作
動がスムースでなくなり、摺動部の摩耗が激しく
なるという欠点があつた。 In the resin passage switching valve having the above structure, the sliding portion consisting of the drive rod 8 and the cylinder hole 7 communicates with the resin passage 2 via the drive rod opening 3.
This is accompanied by a phenomenon in which the filler contained in the liquid resin gets mixed into the sliding portion. As a result, the drive rod does not operate smoothly, resulting in severe wear on the sliding parts.
更に、該摺動部を洗浄してもフイラーは完全に
は除去できず、残留したフイラーが射出成形の次
のシヨツト時に樹脂中に混入してしまい、成形品
にむらを生ずるという不利点があつた。 Furthermore, even if the sliding portion is washed, the filler cannot be completely removed, and the remaining filler may be mixed into the resin at the next shot of injection molding, causing unevenness in the molded product.
この考案の目的は上記従来技術に基づく切換弁
の構造上の制約による問題点に鑑み、駆動杆の先
端部にポペツトを装着し、該ポペツトと駆動杆と
の間にダイアフラムを挟持する構成とすることに
より前記欠点を除去し、不利点を解消する優れた
樹脂通路切換弁を提供せんとするものである。 The purpose of this invention is to take into account the problems caused by the structural limitations of the switching valve based on the prior art, and to provide a configuration in which a poppet is attached to the tip of the drive rod, and a diaphragm is sandwiched between the poppet and the drive rod. In this way, it is an object of the present invention to provide an excellent resin passage switching valve which eliminates the above-mentioned drawbacks and eliminates the disadvantages.
上記目的に沿うこの考案の構成は、バルブ・ボ
デイー中の樹脂通路に開口する駆動杆用の空間部
を、前記樹脂通路に対して遮断することによつ
て、該空間部に樹脂が流入することを防ぎ、もつ
て摺動部に樹脂中のフイラーが混入することを防
止することができるようにしたことを要旨とする
ものである。 The structure of this invention in accordance with the above object is that the space for the driving rod that opens into the resin passage in the valve body is blocked off from the resin passage, so that the resin does not flow into the space. The gist of this invention is to prevent the filler in the resin from getting mixed into the sliding part.
次にこの考案の実施例を第３図及び第４図に基
づいて説明すれば以下の通りである。尚、各構成
要素は第１図及び第２図において同一の符号が示
す構成要素と同一である。 Next, an embodiment of this invention will be described below based on FIGS. 3 and 4. Note that each component is the same as the component indicated by the same reference numeral in FIGS. 1 and 2.
第３図及び第４図に示す実施例において、９は
ポペツトであり、駆動杆８の先端部にビス１０等
によつて着脱自在に装着されており、下端面でチ
エツク・ボール５に当接している。該ポペツト９
と駆動杆８との間にはダイアフラム１１が挟持さ
れており、該ダイアフラム１１の周縁部１１ａは
バルブ・ボデイー１とアダプター６の間で保持さ
れる。なお、ダイアフラム１１は溶剤と反応しな
いようなテフロンコートされたゴム等からなるも
のが好ましい。 In the embodiment shown in FIGS. 3 and 4, a poppet 9 is removably attached to the tip of the drive rod 8 with a screw 10 or the like, and comes into contact with the check ball 5 at its lower end. ing. The poppet 9
A diaphragm 11 is held between the valve body 1 and the drive rod 8, and the peripheral edge 11a of the diaphragm 11 is held between the valve body 1 and the adapter 6. The diaphragm 11 is preferably made of Teflon-coated rubber that does not react with solvents.
上記構成において、弁の作動については第１図
及び第２図に示した従来例のものと基本的に同様
であり、第３図に示すように駆動杆８を下方に押
下するとポペツト９によつてチエツク・ボール５
は弁座４に当接され樹脂通路２を閉鎖する。前記
駆動杆８への付勢力を解除すると、樹脂によつて
チエツク・ボール５、ポペツト９及び駆動杆８は
第４図に示すように上方に押上げられ、樹脂通路
２は開通する。このとき、ダイアフラム１１は図
示の如く変形し、駆動杆８の運動に何等の支障も
与えない。そして、該ダイアフラム１１は駆動杆
８とシリンダー孔７より成る摺動部と樹脂通路２
とを遮断しているので、該摺動部へ樹脂及びフイ
ラーが混入することがない。 In the above configuration, the operation of the valve is basically the same as that of the conventional example shown in FIGS. 1 and 2, and as shown in FIG. Check ball 5
comes into contact with the valve seat 4 and closes the resin passage 2. When the urging force on the driving rod 8 is released, the check ball 5, poppet 9 and driving rod 8 are pushed upward by the resin as shown in FIG. 4, and the resin passage 2 is opened. At this time, the diaphragm 11 deforms as shown in the figure, and does not pose any hindrance to the movement of the drive rod 8. The diaphragm 11 includes a sliding part consisting of a drive rod 8 and a cylinder hole 7, and a resin passage 2.
This prevents resin and filler from entering the sliding portion.
上記の様にこの考案によれば、Ｌ字形樹脂通路
を有するバルブ・ボデイー、該樹脂通路中に設け
られた弁座及びチエツク・ボール、該チエツク・
ボールを弁座に付勢する駆動杆、該駆動杆を案内
支持するアダプターより成る樹脂通路切換弁にお
いて、前記駆動杆の先端部にポペツトを装着し、
該ポペツトと駆動杆の間にダイアフラムを挟持す
る構成としたことにより、駆動杆とアダプターの
シリンダー孔とより成る摺動部を樹脂通路より遮
断するので、該樹脂通路中の樹脂が前記摺動部に
流入することがなく、このため、樹脂中に含まれ
るフイラーが摺動部に混入することが防止できる
という優れた効果がある。したがつて、駆動杆の
作動がスムースになり、摺動部の摩耗が減少し、
且つ洗浄後の残留フイラーが後続のシヨツト時に
混入することがなく成形品にむらが生ずることが
ない。 As described above, this invention includes a valve body having an L-shaped resin passage, a valve seat and a check ball provided in the resin passage, and a valve body having an L-shaped resin passage.
In a resin passage switching valve consisting of a driving rod that urges a ball toward a valve seat and an adapter that guides and supports the driving rod, a poppet is attached to the tip of the driving rod,
By sandwiching the diaphragm between the poppet and the drive rod, the sliding section consisting of the drive rod and the cylinder hole of the adapter is blocked off from the resin passage, so that the resin in the resin passage can be absorbed into the sliding section. Therefore, there is an excellent effect in that the filler contained in the resin can be prevented from entering the sliding part. Therefore, the operation of the drive rod becomes smoother, and wear on the sliding parts is reduced.
In addition, residual filler after cleaning will not be mixed in during subsequent shots, and no unevenness will occur in the molded product.
しかも、ダイアフラムは柔軟な弾性体であるた
め駆動杆の作動につれて容易に変形し、該駆動杆
の作動には何等の悪影響を及ぼさない。 Moreover, since the diaphragm is a flexible elastic body, it easily deforms as the drive rod operates, and does not have any adverse effect on the operation of the drive rod.
更に、該ダイアフラムはポペツトによつて着脱
自在に駆動杆に装着してあるので、該ダイアフラ
ムが損傷した際極めて簡単に交換することがで
き、実用上極めて有益である。 Furthermore, since the diaphragm is removably attached to the drive rod by a poppet, it can be replaced very easily if the diaphragm is damaged, which is extremely useful in practice.
第１図及び第２図は従来の液状樹脂射出成形機
用の樹脂通路切換弁の断面図であり、第３図及び
第４図はこの考案の実施例を示す断面図である。
１……バルブ・ボデイー、２……樹脂通路、３
……駆動杆用開口、４……弁座、５……チエツ
ク・ボール、６……アダプター、７……シリンダ
ー孔、８……駆動杆、９……ポペツト、１１……
ダイアフラム。
1 and 2 are sectional views of a conventional resin passage switching valve for a liquid resin injection molding machine, and FIGS. 3 and 4 are sectional views showing an embodiment of this invention. 1...Valve body, 2...Resin passage, 3
...Driving rod opening, 4...Valve seat, 5...Check ball, 6...Adapter, 7...Cylinder hole, 8...Driving rod, 9...Poppet, 11...
diaphragm.
Claims (1)
口３が穿設されたバルブ・ボデイー１、該バル
ブ・ボデイーに装着されたアダプター６、該アダ
プターに穿設され前記駆動杆用開口と同軸整合す
るシリンダー孔７、前記樹脂通路中に設けられた
弁座４、該弁座に当接離脱するチエツク・ボール
５、前記アダプターのシリンダー孔に挿入され上
記チエツク・ボールを付勢する駆動杆８とから成
る液状樹脂射出成形機用の樹脂通路切換弁におい
て、前記駆動杆の先端部にポペツト９を装着し、
該ポペツトと前記駆動杆の間には上記樹脂通路と
上記シリンダー孔とを遮断するダイアフラム１１
を挟持して成ることを特徴とする液状樹脂射出成
形機用の樹脂通路切換弁。 A valve body 1 having an L-shaped resin passage 2 and an opening 3 for a drive rod opened therein, an adapter 6 mounted on the valve body, and an adapter 6 formed in the adapter and coaxially aligned with the opening for the drive rod. a cylinder hole 7 provided in the resin passage, a check ball 5 that comes into contact with and leaves the valve seat, and a drive rod 8 that is inserted into the cylinder hole of the adapter and urges the check ball. In the resin passage switching valve for a liquid resin injection molding machine, a poppet 9 is attached to the tip of the drive rod,
A diaphragm 11 is provided between the poppet and the drive rod for blocking the resin passage and the cylinder hole.
A resin passage switching valve for a liquid resin injection molding machine, characterized in that the valve is configured by sandwiching the following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980044365U JPS6232811Y2 (en) | 1980-04-02 | 1980-04-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980044365U JPS6232811Y2 (en) | 1980-04-02 | 1980-04-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56144624U JPS56144624U (en) | 1981-10-31 |
| JPS6232811Y2 true JPS6232811Y2 (en) | 1987-08-22 |
Family
ID=29639626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980044365U Expired JPS6232811Y2 (en) | 1980-04-02 | 1980-04-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6232811Y2 (en) |
-
1980
- 1980-04-02 JP JP1980044365U patent/JPS6232811Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56144624U (en) | 1981-10-31 |
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