JPH0343963B2 - - Google Patents
Info
- Publication number
- JPH0343963B2 JPH0343963B2 JP59169066A JP16906684A JPH0343963B2 JP H0343963 B2 JPH0343963 B2 JP H0343963B2 JP 59169066 A JP59169066 A JP 59169066A JP 16906684 A JP16906684 A JP 16906684A JP H0343963 B2 JPH0343963 B2 JP H0343963B2
- Authority
- JP
- Japan
- Prior art keywords
- solvent
- cleaning
- mold
- chamber
- storage tank
- 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 - Lifetime
Links
- 238000004140 cleaning Methods 0.000 claims description 70
- 239000002904 solvent Substances 0.000 claims description 53
- 238000002347 injection Methods 0.000 claims description 19
- 239000007924 injection Substances 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 16
- 229920005989 resin Polymers 0.000 claims description 11
- 239000011347 resin Substances 0.000 claims description 11
- 239000000356 contaminant Substances 0.000 claims description 8
- 238000005192 partition Methods 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 10
- 238000000465 moulding Methods 0.000 description 8
- 230000002950 deficient Effects 0.000 description 7
- 238000000926 separation method Methods 0.000 description 7
- 238000004821 distillation Methods 0.000 description 6
- 238000004506 ultrasonic cleaning Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- CYTYCFOTNPOANT-UHFFFAOYSA-N Perchloroethylene Chemical group ClC(Cl)=C(Cl)Cl CYTYCFOTNPOANT-UHFFFAOYSA-N 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- KYKAJFCTULSVSH-UHFFFAOYSA-N chloro(fluoro)methane Chemical compound F[C]Cl KYKAJFCTULSVSH-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229950011008 tetrachloroethylene Drugs 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000005406 washing 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/70—Maintenance
- B29C33/72—Cleaning
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
Description
〔発明の技術分野〕
この発明は、合成樹脂製品の成形に用いる金属
金型の高圧洗浄装置に関する。
〔発明の技術的背景とその問題点〕
周知の如く合成樹脂製品は、樹脂材料や製品形
状等によつて種々の方法で成形されているが、そ
の多くは金属金型を用いて成形されており、金型
の好悪が製品精度や生産性を左右するものであつ
た。特に樹脂成形機を自動化したり、樹脂製品の
成形機を商品の生産ラインに組入れた場合、問題
となるのは不良製品の発生で、不良製品の発生は
即成形機の停止、或いは生産ラインの停止を招く
ため、不良製品の発生は企業の命運を左右する程
の重要問題であつた。この不良製品の主な原因
は、金型内に付着滞積する樹脂微粉末、樹脂分解
成分カス、錆、潤滑剤、塵俟であるから、製品の
成形数が増加するに従つて不良製品の発生も多く
なつた。不良製品の発生原因である金型の付着滞
積物（以下汚着物と称す）をクリーニングによつ
て取除けば、不良製品の発生原因である金型の製
品精度を一定に保つことができるので、製品の高
精度化に伴い金型クリーニングの頻度も多くなる
傾向にある。この汚着金型のクリーニング手段と
して、成形機より汚着金型を取外し、その汚着金
型を完全に解体した後、金型構成部品を個々に溶
剤内でブラツシングし、洗浄後に乾燥して組立て
る手作業式クリーニングと、取外した汚着金型を
そのまま溶剤内に入れ、これを超音波で洗浄する
超音波クリーニング、及び成形機に取付けてある
汚着金型に圧縮空気を吹き付ける空気噴射式クリ
ーニングが一般に用いられている。しかし手作業
式クリーニングにあつては、製品精度の向上に伴
つて金型構造が複雑化すると共に、構成部品数も
金型によつては100個以上にも及ぶものもあるこ
と、又構成部品数の増加に従つて組み違いミスも
多くなるし、金型部品エツジのだれを引き起こし
金型寿命を短くすること、及び解体…洗浄…組立
に48時間以上もかかり、非能率的で高度の熟練を
要すること等の不都合があるし、超音波クリーニ
ングにあつては、汚着金型を分解せずにそのまま
洗浄し得るので、手作業式クリーニングより洗浄
能率は飛躍的に向上するが、樹脂分解成分カス等
の付着滞積しやすい所、例えば樹脂分解成分カス
を逃す為の道（ガスベント）等の如く小さな隙間
に詰つている汚着物には溶剤の浸透余地がないの
で、〓間に詰つた汚着物の除去は超音波の物理力
程度では不完全であつた。即ち汚着箇所を最もク
リーニングする必要があるにも係わらず、詰りや
すい所のクリーニングが困難である不都合があつ
た。更に空気噴射式クリーニングにあつては、取
扱い操作は容易であるが、金型キヤビテイの〓間
に詰る汚着物の取除きには不適であつた。即ち汚
着物の取除きはほぼ完全であるが、その作業が非
能率的である手作業式クリーニングと、金型の洗
浄作業は極めて簡単であるが、汚着物の取除きが
不充分である超音波クリーニング、及び空気噴射
式クリーニングとでは一長一短があつた。
〔発明の目的〕
そこでこの発明は、樹脂成形機より取外した汚
着金型を分解することなく組んだまま、簡単にし
かも金型の〓間までほぼ完全に洗浄し得るように
することにある。
〔発明の概要〕
本発明金型の高圧洗浄装置は、有機系溶剤を入
れた貯溜タンクに、汚着金型の洗浄室まで達する
送液管を接続し、この送液管の途中に有機系溶剤
を少なくとも５Kg／cm2以上に加圧する高圧ポンプ
を、又送液管の先に溶剤噴射ノズルを接続し、該
噴射ノズルを洗浄室の内部に入れた汚着金型に向
け得るように保持すると共に、貯溜タンクと洗浄
室の上部に気化ガスの排気筒を設けたものであ
る。
〔発明の実施例〕
次に本発明高圧洗浄装置の構造を実施例の図面
に基づき説明する。
１は有機系溶剤を入れた貯溜タンクで、貯溜タ
ンク１は内部に仕切壁２を設け、仕切壁２によつ
て貯溜タンク１の内部を前室２１と後室２２、及
び中間室２３に区分し、前室２１の内部に冷却器
J1を設け、前室２１の下部に溶剤送出口１２を、
又後室２２の上方に溶剤補給口１１と溶剤気化ガ
スの排気筒１３を接続すると共に、中間室２３の
上部より外部に水抜管１４を接続し、前室２１と
後室２２、及び中間室２３の下にドレン管１５を
夫々接続している。
３は貯溜タンク１の溶剤送出口１２に接続する
送液管で、送液管３の途中にバルブ３１とフイル
ター３２、及び溶剤を少なくとも５Kg／cm2以上に
加圧する高圧ポンプ３３を接続し、送液管３の先
に溶剤噴射ノズル４を取付けるもので、噴射ノズ
ル４には溶剤を線状に噴射するものが望ましい。
５は汚着金型Ｅの洗浄室で、洗浄室５は前壁に
金型取付台Ｂの出入口５１を設け、洗浄室５の上
部に溶剤気化ガスの排気筒５３を接続すると共
に、洗浄室５の底５ａより前記貯溜タンク後室２
２の上部に溶剤の排液管５２を接続し、且つ前記
噴射ノズル４を洗浄室５の内部で任意方向に向け
得るように保持し、出入口５１より金型取付台Ｂ
を出し入れするものである。
６は老化溶剤の再生回収装置で、該回収装置６
は冷却室７１の下に、冷却室７１より一回り小さ
い加熱室７２を一体に設けた蒸溜槽７と、蒸溜槽
７に接続する溶剤分離槽９、該分離槽９より前記
貯溜タンク後室２２の上部に接続する再生溶剤の
返液管８、及び返液管８の途中に接続する送液ポ
ンプ１８から構成され、蒸溜槽冷却室７１の内部
に蒸発溶剤の冷却器J2を、又蒸溜槽加熱室７２に
老化溶剤の加熱ヒーターＨを取付け、分離槽９の
内部に仕切片１９を設け、分離槽９を前分室９ａ
と後分室９ｂに区分し、前分室９ａの上部に分離
槽冷却室７１の底に接続する返液管８と、外部に
垂下する水抜管９４を設け、後分室９ｂの中間部
より貯溜タンク後室２２の上部に返液管８を接続
し、蒸溜槽７と分離槽９の下にドレン管７５，９
５を接続している。
J3は排気筒１３，５３の冷却器で、該冷却器J3
と前記貯溜タンク前室２１の内部に取付けた冷却
器J1、及び蒸溜槽加熱室７２の内部に取付けた冷
却器J2には、外部より冷却水を循環する水冷式が
望ましい。
本発明による樹脂用金型の高圧洗浄装置は上記
構造であるから、これを用いて汚着金型Ｅをクリ
ーニングするには、予め金型取付台Ｂに汚着金型
Ｅを取付けておき、先ず洗浄室５の出入口５１を
開放し、出入口５１より洗浄室５の内部に、汚着
金型Ｅを取付けた金型取付台Ｂを入れ、出入口５
１を閉鎖して、洗浄室５の内部に汚着金型Ｅを密
閉状態に格納する。
次に貯溜タンク１の送液管３に接続するバルブ
３１を開き、高圧ポンプ３３を作動すれば、溶剤
は貯溜タンク１より送液管３を通つて噴射ノズル
４に送られ、噴射ノズル４より洗浄室５の内部に
勢いよく噴射される。その際、噴射ノズル４を汚
着金型Ｅのキヤビテイｅに向ければ、溶剤は勢い
よくキヤビテイｅに噴射し、その衝撃力と圧力に
よつてキヤビテイｅに付着滞積していた汚着物ｍ
を取除く。
汚着金型Ｅを洗浄した老化溶剤は、洗浄室５よ
り排液管５２を通つて貯溜タンク１の後室２２に
戻され、貯溜タンク後室２２より前室２１に向け
て順次流れる間に、溶剤とこれに混入した汚着物
ｍに分離し、溶剤のみが前室２１に達して再び汚
着金型Ｅの洗浄に使用される。
噴射ノズル４から噴射する溶剤によつて汚着金
型Ｅのクリーニングが可能となる原因として、金
型キヤビテイｅに溶剤を５Kg／cm2以上の高圧で噴
射した際、その衝撃力によつてエネルギーロス、
即ち圧力損失が多くなるに従つて衝撃力による負
圧も大きくなり、圧力差が大きくなることによつ
て溶剤の浸透を助長することと、溶剤の噴射衝撃
力によつてキヤビテイｅの〓間ｆに詰つた汚着物
ｍが剥ぎ取られること等によるものと考えられ
る。
実際、溶剤が金型の〓間ｆ等に浸透する経路は
きわめて複雑で、又浸透の進行につれて汚着物ｍ
が厚くなり、抵抗が増大する。
しかし浸透の基本として一様の〓間ｆが金型キ
ヤビテイｅに均一に分布している場合の考えるの
が便利である。今、溶剤の流速Ｖ、溶剤の粘度
ｕ、前後の圧力差ｐ、ガスベンド（毛管）〓間の
大きさｄ、〓間の長さ、１cm2当たりの〓間数
ｎ、圧力を受ける金型面積ａ、力の換算係数ｇと
すれば、Poiseuilleの法則より
Ｖ＝3.14・d4・ｇ・ａ・ｎ・ｐ／128・ｕ・
なる関係がある。
実際の溶剤浸透速度は上記式と著しく異なり極
めて小さく層流であるが、浸透速度の指針となる
ものである。即ち溶剤の浸透速度は〓間ｆの大き
さｄが大きいほど著しく大となり、圧力差ｐに比
例するのに反し、溶剤粘度ｕと〓間長さに逆比
例することが理解される。
更に時間ｔ、汚着物の比抵抗ｃ、流量ｑ、圧力
差ｐとすれば、
ｔ＝ｒ・ｃ・q2／２・p1-S（１−１）
tpとなり、一定の圧力下ではｐ，ｒ，ｓ，ｃも
一定であるので、一定の条件下で特定の分解物を
処理する場合には、
ｒ・ｃ／ｐ＝Ｋ（一定）となるから（１−１）式は
次の様になる。
ｔ＝１／２Ｋ・q2
即ち汚着金型Ｅの洗浄時間は流量ｑの２乗に比
例し、流量ｑを多くするには時間ｔを長くすれば
よいことを示している。
〔発明の効果〕
本発明による高圧洗浄装置を用いた汚着金型の
クリーニングと、従来手作業式クリーニング及び
超音波クリーニングを、
試験条件
(イ) 金型…ポリアセタール、ナイロン６、ナイロ
ン66を用いて5000シヨツトの製品を成形した
3.5オンスクラス射出成形用組金型。
(ロ) 溶剤…トリクレン
(ハ) 洗浄方法
…手作業
組金型(イ)を完全に分解し、各部品を個々に
溶剤(ロ)内でブラツシングする。
…超音波洗浄
超音波発生槽に60の溶剤(ロ)を入れ、その
溶剤内に組金型(イ)を分解せずにそのまま入
れ、出力1200W、周波数28khzの超音波を発
生する。
…本発明洗浄装置
組金型(イ)を分解せずその金型に45mmの〓間
より噴射ノズル４で噴射圧40Kg／cm2の溶剤(ロ)
を吹き付ける。
の条件において比較試験した所、下記の如く結
果が得られた。
(ニ) 洗浄時間と溶剤温度
[Technical Field of the Invention] The present invention relates to a high-pressure cleaning device for metal molds used for molding synthetic resin products. [Technical background of the invention and its problems] As is well known, synthetic resin products are molded by various methods depending on the resin material and product shape, but most of them are molded using metal molds. Therefore, the quality of the mold affected product accuracy and productivity. Particularly when automating a resin molding machine or incorporating a molding machine for resin products into a product production line, the problem is the occurrence of defective products, and if a defective product occurs, the molding machine must be immediately stopped or the production line must be shut down. The occurrence of defective products was such an important issue that it could affect the fate of a company, as it could lead to a shutdown. The main causes of these defective products are resin fine powder, resin decomposition component residue, rust, lubricant, and dust that accumulate inside the mold, so as the number of products molded increases, the number of defective products increases. The number of occurrences has also increased. If the build-up on the mold (hereinafter referred to as contaminants), which is the cause of defective products, is removed by cleaning, the product accuracy of the mold, which is the cause of defective products, can be maintained at a constant level. As products become more precise, the frequency of mold cleaning tends to increase. As a means of cleaning this contaminated mold, remove the contaminated mold from the molding machine, completely disassemble the contaminated mold, brush the mold components individually in a solvent, wash them, and then dry them. There are manual cleaning methods for assembly, ultrasonic cleaning methods in which the removed contaminated molds are placed in a solvent and cleaned using ultrasonic waves, and air injection methods in which compressed air is sprayed onto the contaminated molds attached to the molding machine. Cleaning is commonly used. However, when it comes to manual cleaning, the structure of the mold becomes more complex as product precision improves, and the number of component parts can reach over 100 depending on the mold. As the number increases, there will be more mistakes in assembly, which will cause the edges of the mold parts to sag, shortening the life of the mold, and disassembling, cleaning, and assembling will take more than 48 hours, which is inefficient and requires a high level of skill. Ultrasonic cleaning can clean contaminated molds as they are without disassembling them, which dramatically improves cleaning efficiency compared to manual cleaning, but it does not require resin decomposition. There is no room for the solvent to penetrate into small gaps, such as in places where component residues tend to accumulate, such as in the paths (gas vents) used to release decomposed resin component debris, so there is no room for the solvent to penetrate. The physical force of ultrasound was insufficient to remove the contaminants. That is, although it is most necessary to clean soiled areas, there is a problem in that it is difficult to clean areas that are likely to become clogged. Furthermore, while air jet cleaning is easy to handle, it is not suitable for removing contaminants stuck between the mold cavities. In other words, manual cleaning, which removes contaminants almost completely but is inefficient, and super-cleaning, which removes contaminants insufficiently, although mold cleaning is extremely simple. Sonic cleaning and air jet cleaning have their advantages and disadvantages. [Purpose of the Invention] Therefore, the object of the present invention is to make it possible to easily and almost completely clean a dirty mold removed from a resin molding machine without disassembling it, even between the molds. . [Summary of the Invention] The high-pressure cleaning device for molds of the present invention connects a storage tank containing an organic solvent to a liquid delivery pipe that reaches a cleaning chamber for contaminated molds, and injects an organic solvent into the middle of this liquid delivery pipe. A high-pressure pump that pressurizes the solvent to at least 5 kg/cm 2 or more is connected to a solvent injection nozzle at the end of the liquid supply pipe, and the injection nozzle is held so that it can be directed at the contaminated mold placed inside the cleaning chamber. At the same time, a vaporized gas exhaust pipe is provided above the storage tank and cleaning chamber. [Embodiments of the Invention] Next, the structure of the high-pressure cleaning device of the present invention will be explained based on drawings of embodiments. 1 is a storage tank containing an organic solvent, and the storage tank 1 is provided with a partition wall 2 inside, and the partition wall 2 divides the inside of the storage tank 1 into a front chamber 21, a rear chamber 22, and an intermediate chamber 23. A cooler is installed inside the front chamber 21.
J 1 and a solvent outlet 12 at the bottom of the front chamber 21.
Further, the solvent replenishment port 11 and the exhaust pipe 13 for the solvent vaporized gas are connected to the upper part of the rear chamber 22, and the drain pipe 14 is connected to the outside from the upper part of the intermediate chamber 23, so that the front chamber 21, the rear chamber 22, and the intermediate chamber A drain pipe 15 is connected below each of the drain pipes 23. 3 is a liquid feeding pipe connected to the solvent outlet 12 of the storage tank 1, a valve 31, a filter 32, and a high pressure pump 33 for pressurizing the solvent to at least 5 kg/cm 2 are connected in the middle of the liquid feeding pipe 3; A solvent injection nozzle 4 is attached to the tip of the liquid sending pipe 3, and it is preferable that the injection nozzle 4 is one that injects the solvent in a linear manner. Reference numeral 5 designates a cleaning chamber for the contaminated mold E. The cleaning chamber 5 has an entrance 51 for the mold mounting base B on the front wall, and an exhaust pipe 53 for solvent vaporization gas is connected to the upper part of the cleaning chamber 5. 5 from the bottom 5a of the storage tank rear chamber 2
A solvent drain pipe 52 is connected to the upper part of the cleaning chamber 5, and the injection nozzle 4 is held so as to be oriented in any direction inside the cleaning chamber 5.
It is used to take things in and out. 6 is an aged solvent regeneration and recovery device;
A distillation tank 7 is integrated with a heating chamber 72 that is one size smaller than the cooling chamber 71 under the cooling chamber 71, a solvent separation tank 9 is connected to the distillation tank 7, and the storage tank rear chamber 22 is connected to the separation tank 9. It consists of a regenerated solvent return pipe 8 connected to the upper part of the distillation tank, and a liquid sending pump 18 connected in the middle of the regenerated solvent return pipe 8. A heater H for aging solvent is installed in the tank heating chamber 72, a partition piece 19 is provided inside the separation tank 9, and the separation tank 9 is connected to the front compartment 9a.
A liquid return pipe 8 connected to the bottom of the separation tank cooling chamber 71 and a water drain pipe 94 hanging to the outside are provided in the upper part of the front compartment 9a, and a water drain pipe 94 is provided in the upper part of the front compartment 9a. A liquid return pipe 8 is connected to the upper part of the chamber 22, and drain pipes 75 and 9 are connected to the bottom of the distillation tank 7 and separation tank 9.
5 is connected. J 3 is a cooler for the exhaust stack 13, 53, and the cooler J 3
The cooler J 1 installed inside the storage tank front chamber 21 and the cooler J 2 installed inside the distillation tank heating chamber 72 are preferably water-cooled types in which cooling water is circulated from the outside. Since the high-pressure cleaning device for resin molds according to the present invention has the above-described structure, in order to clean the contaminated mold E using this device, the contaminated mold E is attached to the mold mount B in advance. First, open the entrance/exit 51 of the cleaning chamber 5, put the mold mount B with the dirty mold E attached into the inside of the cleaning chamber 5 through the entrance/exit 51, and then open the entrance/exit 5.
1 is closed, and the dirty mold E is stored in the cleaning chamber 5 in a sealed state. Next, by opening the valve 31 connected to the liquid feed pipe 3 of the storage tank 1 and operating the high pressure pump 33, the solvent is sent from the storage tank 1 through the liquid feed pipe 3 to the injection nozzle 4, and from the injection nozzle 4. It is vigorously sprayed into the cleaning chamber 5. At this time, if the injection nozzle 4 is directed toward the cavity e of the fouling mold E, the solvent will be vigorously sprayed into the cavity e, and the impact force and pressure will cause the fouling m that has adhered and accumulated in the cavity e.
remove. The aged solvent that has cleaned the contaminated mold E is returned to the rear chamber 22 of the storage tank 1 from the cleaning chamber 5 through the drain pipe 52, and while flowing sequentially from the rear chamber 22 of the storage tank toward the front chamber 21. The solvent is separated into the solvent and the contaminants m mixed therein, and only the solvent reaches the front chamber 21 and is used again to clean the contaminated mold E. The reason why the contaminated mold E can be cleaned by the solvent injected from the injection nozzle 4 is that when the solvent is injected into the mold cavity e at a high pressure of 5 kg/cm 2 or more, energy is released due to the impact force. Loss,
That is, as the pressure loss increases, the negative pressure due to the impact force also increases, and the pressure difference increases, which promotes the penetration of the solvent, and the impact force of the solvent injection causes the gap f between the cavities e to increase. This is thought to be due to the fact that the dirt m clogged in the water is peeled off. In fact, the route through which the solvent penetrates into the mold's space is extremely complicated, and as the penetration progresses, contaminants
becomes thicker and the resistance increases. However, as a basis for penetration, it is convenient to consider the case where a uniform distance f is uniformly distributed in the mold cavity e. Now, the flow rate of the solvent V, the viscosity of the solvent u, the pressure difference p before and after, the size d between the gas bends (capillaries), the length between the bends, the number of bends per 1 cm2 n, the area of the mold that receives the pressure. If a is the force conversion factor g, then from Poiseuille's law V = 3.14・d 4・g・a・n・p/128・u・
There is a relationship. Although the actual solvent permeation rate is significantly different from the above equation and is extremely small and laminar, it serves as a guideline for the permeation rate. That is, it is understood that the permeation rate of the solvent increases significantly as the size d of the gap f increases, and is proportional to the pressure difference p, but is inversely proportional to the solvent viscosity u and the gap length. Furthermore, if time t, specific resistance c of the dirt, flow rate q, and pressure difference p are given, then t=r・c・q 2 /2・p 1-S (1-1) tp, and under a constant pressure, p , r, s, and c are also constant, so when treating a specific decomposition product under constant conditions, r・c/p=K (constant), so equation (1-1) is as follows. It will be like that. t=1/2K·q 2 That is, the cleaning time of the contaminated mold E is proportional to the square of the flow rate q, which indicates that in order to increase the flow rate q, it is sufficient to lengthen the time t. [Effects of the invention] Cleaning of a contaminated mold using the high-pressure cleaning device according to the present invention and conventional manual cleaning and ultrasonic cleaning were performed. Test conditions (a) Mold: Polyacetal, nylon 6, and nylon 66 were used. molded 5,000 shots of the product.
Assembly mold for 3.5 oz class injection molding. (b) Solvent: Triclean (c) Cleaning method: Manually Disassemble the assembled mold (a) completely and brush each part individually in the solvent (b). ...Ultrasonic cleaning Pour 60% solvent (B) into the ultrasonic generation tank, place the assembled mold (A) in the solvent without disassembling it, and generate ultrasonic waves with an output of 1200W and a frequency of 28kHz. ...Cleaning device of the present invention Spray solvent (b) at a pressure of 40 kg/cm 2 into the assembled mold (a) from a distance of 45 mm from the injection nozzle 4 into the mold without disassembling it.
Spray. A comparative test was conducted under the following conditions, and the following results were obtained. (d) Cleaning time and solvent temperature
【表】
において行つた所、下記の如く汚着物の洗浄度合
表１が得られた。When [Table] was carried out, Table 1 of the cleaning degree of soiled matter was obtained as shown below.
【表】
上記の実験結果によつて本発明の高圧洗浄装置
は、超音波洗浄より短時間の洗浄で、しかも手作
業による洗浄と同様の効果が得られることがわか
る。
又本発明洗浄装置によるクリーニング効果を、
試験条件
(イ) 金型…前記実験例に同じ
(ロ) 溶剤… 〃
(ハ) 溶剤温度… 〃
において、溶剤の噴射圧と時間を可変した所、下
記の如く洗浄度合表２が得られた。[Table] The above experimental results show that the high-pressure cleaning device of the present invention can clean in a shorter time than ultrasonic cleaning, and can achieve the same effect as manual cleaning. In addition, the cleaning effect of the cleaning device of the present invention was evaluated under the test conditions (a) Mold...same as the above experimental example, (b) Solvent... (c) Solvent temperature... The following results were obtained by varying the solvent injection pressure and time. Cleaning degree table 2 was obtained as shown below.
【表】
尚、トリクレン以外の溶剤としてトリクロロエ
チレン、塩化メチレン、パークロロエチレン、
1.1.1−トリクロロエタン及びフロン系溶剤が適
当である。
従つて本発明金型の高圧洗浄装置は、前記の実
験例から
Ａ 60Kg／cm2の噴射圧で１分間洗浄しても充分な
洗浄効果が得られない。特に〓間ｆの洗浄が不
充分である。
Ｂ ５Kg／cm2の噴射圧では洗浄時間を長くしても
〓間ｆの洗浄効果はあまり向上しない。
Ｃ 10Kg／cm2以上の噴射圧で５分以上洗浄すると
キヤビテイｅは勿論、〓間ｆの洗浄効果も急激
に向上する。
Ｄ しかし洗浄時間を15分以上、噴射圧を40Kg／
cm2以上にしても、それまでの洗浄効果より僅か
しか向上しない。
Ｅ 10〜60Kg／cm2の噴射圧で５〜15分の洗浄が最
も効果的である。
等の特徴があるので、これを用いて汚着金型をク
リーニングすれば、金型を分解することなく組ん
だまま洗浄し得るので、手作業式の如く金型の組
み違いミスも、金型エツジのだれも生じないばか
りか、洗浄効果は手作業式クリーニングと同等ま
で洗浄し得る。しかも汚着金型の洗浄時間は超音
波クリーニングの1/10以下に短縮し得るので、金
型を著しく簡単に且つ能率的にクリーニングでき
ると共に、金型クリーニングも非常に安価とな
り、金型を常に美麗にしておくこともできる。そ
の結果、樹脂製品の高精度化と品質向上が著しく
容易になるし、高精度の製品を安定して量産し得
る等、実用面に有益な効果を奏するものである。[Table] In addition, trichlorethylene, methylene chloride, perchlorethylene,
1.1.1-Trichloroethane and chlorofluorocarbon solvents are suitable. Therefore, the high-pressure cleaning device for molds of the present invention cannot obtain a sufficient cleaning effect even if the mold is cleaned for 1 minute at a spray pressure of A 60 kg/cm 2 from the above-mentioned experimental example. In particular, the cleaning between and f is insufficient. B: At an injection pressure of 5 kg/cm 2 , even if the cleaning time is increased, the cleaning effect in the interval f does not improve much. C When cleaning is performed for 5 minutes or more with an injection pressure of 10 kg/cm 2 or higher, the cleaning effect not only for the cavity e but also for the space f is rapidly improved. D However, if the cleaning time is 15 minutes or more and the injection pressure is 40 kg/
Even if the cleaning effect is increased to more than cm 2 , the cleaning effect is only slightly improved compared to the previous cleaning effect. E Cleaning for 5 to 15 minutes at a spray pressure of 10 to 60 kg/cm 2 is most effective. If you use this to clean dirty molds, you can clean the molds while they are assembled without disassembling them. Not only does it not produce any edges, but the cleaning effect is comparable to that of manual cleaning. Moreover, the cleaning time for contaminated molds can be shortened to less than 1/10 of ultrasonic cleaning, making it possible to clean molds extremely easily and efficiently.Mold cleaning is also extremely inexpensive, and molds can be constantly cleaned. You can also keep it beautiful. As a result, high precision and quality improvement of resin products becomes extremely easy, and high precision products can be stably mass-produced, which has beneficial effects in practical terms.
第１図は本発明高圧洗浄装置の概略構造図、第
２と第３図は類例高圧洗浄装置の概略構造図、第
４図は金型の縦断面図、第５図は金型キヤビテイ
成形部の拡大断面図である。
１……貯溜タンク、２……仕切壁、３……送液
管、４……噴射ノズル、５……洗浄室、５ａ……
洗浄室の底、６……再生回収装置、７……蒸溜
槽、８……返液管、９……溶剤分離槽、９ａ，９
ｂ……分室、１１……補給口、１２……送出口、
１３，５３……排気筒、１４，９４……水抜管、
１５，７５，９５……ドレン管、１８……送液ポ
ンプ、１９……仕切片、２１……前室、２２……
後室、２３……中間室、３１……バルブ、３２…
…フイルター、３３……高圧ポンプ、５１……出
入口、５２……排液管、７１……冷却室、７２…
…加熱室、Ｂ……金型取付台、Ｅ……汚着金型、
J1，J2，J3……冷却器、Ｈ……加熱ヒーター、ｅ
……キヤビテイ、ｆ……〓間、ｍ……汚着物。
Fig. 1 is a schematic structural diagram of a high-pressure cleaning device of the present invention, Figs. 2 and 3 are schematic structural diagrams of a similar high-pressure washing device, Fig. 4 is a vertical cross-sectional view of a mold, and Fig. 5 is a mold cavity molding section. FIG. 1... Storage tank, 2... Partition wall, 3... Liquid feeding pipe, 4... Injection nozzle, 5... Cleaning chamber, 5a...
Bottom of cleaning chamber, 6...Regeneration recovery device, 7...Distillation tank, 8...Return pipe, 9...Solvent separation tank, 9a, 9
b... Branch, 11... Supply port, 12... Outlet port,
13,53...exhaust pipe, 14,94...drain pipe,
15, 75, 95... Drain pipe, 18... Liquid pump, 19... Partition piece, 21... Front chamber, 22...
Rear chamber, 23... Intermediate chamber, 31... Valve, 32...
... Filter, 33 ... High pressure pump, 51 ... Inlet/outlet, 52 ... Drain pipe, 71 ... Cooling chamber, 72 ...
...Heating chamber, B...Mold mounting stand, E...Dirty mold,
J 1 , J 2 , J 3 ... Cooler, H ... Heater, e
...cavity, f...〓between, m...filth.
Claims (1)
切壁２を設け、貯溜タンク１の内部を前室２１と
後室２２、及び中間室２３に区分し、前室２１の
下部に送液管３を、後室２２の上部に溶剤補給口
１１を接続し、貯溜タンク１の下部にドレン管１
５を接続すると共に、送液管３の途中に溶剤を少
なくとも５Kg／cm2以上に加圧する高圧ポンプ３３
を、又送液管３の先に溶剤噴射ノズル４を接続す
る一方、汚着金型Ｅの洗浄室５に金型取付台Ｂの
出入口５１を設け、且つ前記噴射ノズル４を洗浄
室５の内部で任意方向に向け得るように保持し、
洗浄室の底５ａに使用済溶剤の排液管５２を接続
し、貯溜タンク１と洗浄室５の上部に溶剤気化ガ
スの排気筒１３，５３を設け、洗浄室５の内部に
おいて噴射ノズル４より汚着金型Ｅに向けて溶剤
を勢いよく噴射し、汚着金型Ｅに付着滞積した汚
着物ｍを取除けるようにしたことを特徴とする樹
脂用金型の高圧洗浄装置。1 A partition wall 2 is provided inside the storage tank 1 containing an organic solvent, and the inside of the storage tank 1 is divided into a front chamber 21, a rear chamber 22, and an intermediate chamber 23, and a liquid feeding pipe is installed at the bottom of the front chamber 21. 3, connect the solvent supply port 11 to the upper part of the rear chamber 22, and connect the drain pipe 1 to the lower part of the storage tank 1.
5, and a high-pressure pump 33 that pressurizes the solvent to at least 5 kg/cm 2 in the middle of the liquid feeding pipe 3.
In addition, a solvent injection nozzle 4 is connected to the tip of the liquid feeding pipe 3, while an entrance 51 of the mold mount B is provided in the cleaning chamber 5 of the contaminated mold E, and the injection nozzle 4 is connected to the cleaning chamber 5 of the contaminated mold E. Hold it inside so that it can be oriented in any direction,
A drain pipe 52 for used solvent is connected to the bottom 5a of the cleaning chamber, exhaust pipes 13 and 53 are provided for the solvent vaporized gas at the top of the storage tank 1 and the cleaning chamber 5, and the exhaust pipe 52 is connected to the bottom 5a of the cleaning chamber 5. A high-pressure cleaning device for a resin mold, characterized in that it is configured to vigorously spray a solvent toward a contaminated mold E to remove contaminants m that have accumulated on the contaminated mold E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16906684A JPS6147218A (en) | 1984-08-13 | 1984-08-13 | High pressure cleaning device of mold for resin product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16906684A JPS6147218A (en) | 1984-08-13 | 1984-08-13 | High pressure cleaning device of mold for resin product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6147218A JPS6147218A (en) | 1986-03-07 |
| JPH0343963B2 true JPH0343963B2 (en) | 1991-07-04 |
Family
ID=15879699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16906684A Granted JPS6147218A (en) | 1984-08-13 | 1984-08-13 | High pressure cleaning device of mold for resin product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6147218A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2507742Y2 (en) * | 1989-11-07 | 1996-08-21 | リョービ株式会社 | Bale arm reversing mechanism of spinning reel for fishing |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841967A (en) * | 2019-12-10 | 2020-02-28 | 齐雨光 | Surface cleaning device for die machining |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5148787A (en) * | 1974-04-26 | 1976-04-27 | Dainippon Toryo Kk | OSHOKUHATSUKOKEIKOTAI OYOBI SONOSEIZOHOHO |
| JPS5529551A (en) * | 1978-08-24 | 1980-03-01 | Mitsui Toatsu Chem Inc | Removal of synthetic high polymer deposit |
| JPS5897536A (en) * | 1981-12-04 | 1983-06-10 | Toyota Motor Corp | Head light beam switching device for car |
-
1984
- 1984-08-13 JP JP16906684A patent/JPS6147218A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5148787A (en) * | 1974-04-26 | 1976-04-27 | Dainippon Toryo Kk | OSHOKUHATSUKOKEIKOTAI OYOBI SONOSEIZOHOHO |
| JPS5529551A (en) * | 1978-08-24 | 1980-03-01 | Mitsui Toatsu Chem Inc | Removal of synthetic high polymer deposit |
| JPS5897536A (en) * | 1981-12-04 | 1983-06-10 | Toyota Motor Corp | Head light beam switching device for car |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2507742Y2 (en) * | 1989-11-07 | 1996-08-21 | リョービ株式会社 | Bale arm reversing mechanism of spinning reel for fishing |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6147218A (en) | 1986-03-07 |
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