JP2021016961A - Mold cleaning device - Google Patents
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- JP2021016961A JP2021016961A JP2019132880A JP2019132880A JP2021016961A JP 2021016961 A JP2021016961 A JP 2021016961A JP 2019132880 A JP2019132880 A JP 2019132880A JP 2019132880 A JP2019132880 A JP 2019132880A JP 2021016961 A JP2021016961 A JP 2021016961A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 150
- 239000012670 alkaline solution Substances 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 64
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 4
- 239000000243 solution Substances 0.000 abstract description 10
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000005259 measurement Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 239000011148 porous material Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 5
- 238000005273 aeration Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000004506 ultrasonic cleaning Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000012778 molding material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000012190 activator Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Cleaning By Liquid Or Steam (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
本発明は、金型を洗浄液に浸して、超音波振動により洗浄する金型洗浄装置に関する。 The present invention relates to a mold cleaning device in which a mold is immersed in a cleaning liquid and cleaned by ultrasonic vibration.
従来、樹脂等を成形する金型を洗浄するため、金型を洗浄液に浸し、超音波振動により付着物を除去する金型洗浄装置が知られている。このような金型洗浄装置は、洗浄対象のの金型の種類や大きさに応じて超音波の出力や洗浄液の温度を制御して、洗浄を行うことができる。 Conventionally, in order to clean a mold for molding a resin or the like, a mold cleaning device for immersing the mold in a cleaning liquid and removing deposits by ultrasonic vibration is known. Such a mold cleaning device can perform cleaning by controlling the output of ultrasonic waves and the temperature of the cleaning liquid according to the type and size of the mold to be cleaned.
例えば、下記の特許文献１の金型洗浄装置は、ケース（筐体）の上部に洗浄槽が設置されている。また、洗浄槽の下部に電解洗浄液用タンクを設置し、洗浄槽底面の排水口と電解洗浄液用タンクとは、流路切替及び濾過装置を介設した排水管を介して接続されている。電解洗浄用タンクから洗浄槽の上面に配置する電解洗浄液供給用の配管との間にはポンプを介設し、電解洗浄液用タンクの内部にはヒータを配置して、電解洗浄液を所要温度に加熱できるようにしている。 For example, in the mold cleaning device of Patent Document 1 below, a cleaning tank is installed in the upper part of a case (housing). Further, an electrolytic cleaning liquid tank is installed at the bottom of the cleaning tank, and the drain port on the bottom surface of the cleaning tank and the electrolytic cleaning liquid tank are connected via a drain pipe provided with a flow path switching and a filtration device. A pump is provided between the electrolytic cleaning tank and the piping for supplying the electrolytic cleaning liquid located on the upper surface of the cleaning tank, and a heater is arranged inside the tank for the electrolytic cleaning liquid to heat the electrolytic cleaning liquid to the required temperature. I am trying to do it.
さらに、洗浄槽には周壁内面の上部より第１噴射ノズル、下部より第２噴射ノズル、対向する周壁内面より第３噴射ノズルを突出させ、これら第１〜第３噴射ノズルを水洗水供給管のそれぞれの分岐管先端に取り付けている。このため、金型が電解洗浄されると共に、電解洗浄液を超音波振動させて、金型を洗浄することができる（段落００４４，００４５、００５９、図２，図４）。 Further, a first injection nozzle is projected from the upper part of the inner surface of the peripheral wall, a second injection nozzle is projected from the lower part of the inner surface of the peripheral wall, and a third injection nozzle is projected from the inner surface of the peripheral wall facing the washing tank. It is attached to the tip of each branch pipe. Therefore, the mold can be electrolytically cleaned, and the electrolytic cleaning liquid can be ultrasonically vibrated to clean the mold (paragraphs 0044, 0045, 0059, FIGS. 2 and 4).
しかしながら、特許文献１の金型洗浄装置では、金属光造形法で作られた気孔を有する金型を効率良く洗浄することができなかった。金属光造形法とは、金属の粉末材料をレーザによる熱加工で一層ずつ焼結して積み上げて立体形状とする方法であり、完成した金型の表面には無数の気孔が形成される。 However, the mold cleaning apparatus of Patent Document 1 could not efficiently clean the mold having pores created by the metal stereolithography method. The metal stereolithography method is a method in which a metal powder material is sintered layer by layer by thermal processing with a laser and stacked to form a three-dimensional shape, and innumerable pores are formed on the surface of the completed mold.
このような多孔質の金型は、樹脂製品を成形していくと気孔が目詰まりを起こすが、前記金型洗浄装置の通常の使用方法では、内部に詰まった粉末を完全に除去することができなかった。 In such a porous mold, the pores are clogged as the resin product is molded, but in the usual method of using the mold cleaning device, the powder clogged inside can be completely removed. could not.
本発明は、上述の点に鑑みてなされたものであり、多孔質の金型を効率良く洗浄することができる金型洗浄装置を提供することを目的とする。 The present invention has been made in view of the above points, and an object of the present invention is to provide a mold cleaning device capable of efficiently cleaning a porous mold.
本発明は、洗浄槽内の洗浄液に多孔質の金型を浸して、超音波振動により前記金型の表面及び内部を洗浄する金型洗浄装置であって、前記洗浄液の温度を調整するヒータと、前記洗浄液を送出するポンプと、前記金型と接触した取付具を介して、当該金型に前記洗浄液を注入するチューブと、を備え、前記洗浄液が強アルカリ溶液であることを特徴とする。 The present invention is a mold cleaning device for immersing a porous mold in a cleaning liquid in a cleaning tank and cleaning the surface and the inside of the mold by ultrasonic vibration, and a heater for adjusting the temperature of the cleaning liquid. A pump for delivering the cleaning liquid and a tube for injecting the cleaning liquid into the mold via a fitting in contact with the mold are provided, and the cleaning liquid is a strong alkaline solution.
本発明の金型洗浄装置は、多孔質の金型を洗浄液に浸して洗浄する超音波洗浄であるが、ヒータにより温度調整した洗浄液をポンプで送出し、前記金型と取付具で接続されたチューブから前記金型に向けて直接、洗浄液を注入する。これにより、前記金型の表面に形成された細かい気孔から洗浄液が少しずつ排出され、前記金型の内部に付着した破片、粉末等を効率良く洗浄することができる。 The mold cleaning device of the present invention is an ultrasonic cleaning in which a porous mold is immersed in a cleaning liquid for cleaning, but a cleaning liquid whose temperature has been adjusted by a heater is sent out by a pump and connected to the mold by a fixture. The cleaning liquid is injected directly from the tube toward the mold. As a result, the cleaning liquid is gradually discharged from the fine pores formed on the surface of the mold, and the debris, powder, etc. adhering to the inside of the mold can be efficiently cleaned.
本発明の金型洗浄装置において、前記チューブには、当該チューブを分岐させる継ぎ手が取り付けられていることが好ましい。 In the mold cleaning device of the present invention, it is preferable that the tube is provided with a joint for branching the tube.
チューブは、多孔質の金型に洗浄液を注入してその内部を洗浄するが、継ぎ手によりチューブを分岐させる。これにより、分岐したチューブの先に他の金型を接続させて、一度に複数の金型を洗浄することができる。 The tube is cleaned by injecting a cleaning solution into a porous mold to clean the inside, but the tube is branched by a joint. This makes it possible to connect another mold to the tip of the branched tube and clean a plurality of molds at once.
また、本発明の金型洗浄装置において、前記ヒータは、前記洗浄液が４０℃以上となるように調整することが好ましい。 Further, in the mold cleaning apparatus of the present invention, it is preferable that the heater is adjusted so that the cleaning liquid is 40 ° C. or higher.
金型洗浄装置のヒータで洗浄液が４０℃以上となるように温度調整することで、洗浄液の化学反応が促進され、金型の洗浄能力を高めることができる。 By adjusting the temperature of the cleaning liquid to 40 ° C. or higher with the heater of the mold cleaning device, the chemical reaction of the cleaning liquid is promoted and the cleaning ability of the mold can be enhanced.
また、本発明の金型洗浄装置において、前記洗浄液は、水酸化ナトリウム、水酸化カリウム、炭酸ナトリウムのうち少なくとも１つを含み、前記金型の洗浄用に調合された強アルカリ溶液であることが好ましい。 Further, in the mold cleaning apparatus of the present invention, the cleaning liquid may be a strong alkaline solution containing at least one of sodium hydroxide, potassium hydroxide and sodium carbonate and prepared for cleaning the mold. preferable.
洗浄液としては、強アルカリ溶液である水酸化ナトリウム、水酸化カリウム又は炭酸ナトリウムのうち少なくとも１つを含む専用の強アルカリ溶液を用いることで、酸化物の除去性能が高まり、確実に金型を洗浄することができる。 By using a dedicated strong alkaline solution containing at least one of sodium hydroxide, potassium hydroxide or sodium carbonate, which is a strong alkaline solution, as the cleaning solution, the oxide removing performance is improved and the mold is reliably washed. can do.
以下では、図面を参照しつつ、本発明の金型洗浄装置の実施形態について説明する。 Hereinafter, embodiments of the mold cleaning apparatus of the present invention will be described with reference to the drawings.
図１は、本発明の実施形態に係る金型洗浄装置１の全体図である。金型洗浄装置１は、基本的には超音波洗浄装置であるため、いかなる金型の洗浄も可能である。しかしながら、後述するチューブ、取付具等を用いることで、特に金属光造形法で製作した多孔質（ポーラス構造）の金型洗浄に有効な装置となっている。 FIG. 1 is an overall view of the mold cleaning device 1 according to the embodiment of the present invention. Since the mold cleaning device 1 is basically an ultrasonic cleaning device, it is possible to clean any mold. However, by using a tube, a fixture, etc., which will be described later, the device is particularly effective for cleaning a porous (porous structure) mold manufactured by a metal stereolithography method.
図示するように、金型洗浄装置１は、多孔質の金型Ｍを洗浄する洗浄槽２と、洗浄用の液体（以下、洗浄液）が流通するチューブ６と、チューブ６の流路に設けられた循環ポンプ８と、レギュレータ９とで構成されている。 As shown in the figure, the mold cleaning device 1 is provided in a cleaning tank 2 for cleaning a porous mold M, a tube 6 through which a cleaning liquid (hereinafter, cleaning liquid) flows, and a flow path of the tube 6. It is composed of a circulation pump 8 and a regulator 9.
通常、金型Ｍは洗浄カゴ２ａ内に置かれ、洗浄槽２の洗浄液Ｌに浸して洗浄するが、本実施形態の金型洗浄装置１では、チューブ６と接続された状態の金型Ｍを洗浄液Ｌに浸す。金型Ｍを洗浄液Ｌに浸して超音波洗浄することで、金型Ｍの表面を洗浄することができる。 Normally, the mold M is placed in the cleaning basket 2a and immersed in the cleaning liquid L of the cleaning tank 2 for cleaning. However, in the mold cleaning device 1 of the present embodiment, the mold M in a state of being connected to the tube 6 is used. Immerse in cleaning liquid L. The surface of the mold M can be cleaned by immersing the mold M in the cleaning liquid L and performing ultrasonic cleaning.
また、金型Ｍは、チューブ６と接続するための取付具５を挿入する開口が設けられており、金型Ｍに対して取付具５を確実に固定し、チューブ６から洗浄液Ｌを直接注入する構成となっている。なお、注入された洗浄液Ｌは、金型Ｍの表面に形成された細かい気孔から少しずつ排出されるので、金型Ｍの内部に付着した破片、粉末等を効率良く洗浄することができる。 Further, the mold M is provided with an opening for inserting the fixture 5 for connecting to the tube 6, the fixture 5 is securely fixed to the mold M, and the cleaning liquid L is directly injected from the tube 6. It is configured to do. Since the injected cleaning liquid L is gradually discharged from the fine pores formed on the surface of the mold M, debris, powder, and the like adhering to the inside of the mold M can be efficiently cleaned.
洗浄槽２は加熱ヒータ３（本発明の「ヒータ」）と、その制御装置４を備えており、洗浄液Ｌの温度をデジタル制御により変更することができる。洗浄槽２の内部で洗浄液Ｌの温度が一定となるように、撹拌機能を備えていてもよい。 The cleaning tank 2 includes a heating heater 3 (“heater” of the present invention) and a control device 4 thereof, and the temperature of the cleaning liquid L can be changed by digital control. A stirring function may be provided so that the temperature of the cleaning liquid L becomes constant inside the cleaning tank 2.
実験では、金型Ｍを洗浄する洗浄液Ｌの温度を、金型洗浄装置１で設定可能な最大温度である７０℃としたが、洗浄液Ｌの温度は常温以上、特に、４０℃以上あることが好ましい。これにより、洗浄液Ｌの化学反応が促進され、金型Ｍの洗浄能力を高めることができる。 In the experiment, the temperature of the cleaning liquid L for cleaning the mold M was set to 70 ° C., which is the maximum temperature that can be set by the mold cleaning apparatus 1, but the temperature of the cleaning liquid L is higher than normal temperature, particularly 40 ° C. preferable. As a result, the chemical reaction of the cleaning liquid L is promoted, and the cleaning ability of the mold M can be enhanced.
また、制御装置４は、発振周波数が２８ｋＨｚの超音波振動子（図示省略）を制御して、出力を変更することができる。出力値は洗浄する金型に依存するが、実験データ取得時は最大出力（約３００Ｗ）とした。また、制御装置４のデジタル制御タイマ（図示省略）により、洗浄時間の制御も可能となっている。 Further, the control device 4 can change the output by controlling an ultrasonic oscillator (not shown) having an oscillation frequency of 28 kHz. The output value depends on the mold to be cleaned, but the maximum output (about 300 W) was set when the experimental data was acquired. Further, the cleaning time can be controlled by the digital control timer (not shown) of the control device 4.
洗浄槽２の洗浄液Ｌは、チューブ６に設けられた循環ポンプ８（本発明の「ポンプ」）により吸引口から吸引され、流路を循環する。循環ポンプ８は吸込口８ａ及び吐出口８ｂを備えた、ダイヤフラム（隔膜）を往復運動させることで液体を移送するダイヤフラム式ポンプであり、吐出量は１〜２０（Ｌ／ｍｉｎ）程度である。 The cleaning liquid L in the cleaning tank 2 is sucked from the suction port by the circulation pump 8 (“pump” of the present invention) provided in the tube 6 and circulates in the flow path. The circulation pump 8 is a diaphragm type pump provided with a suction port 8a and a discharge port 8b, which transfers a liquid by reciprocating a diaphragm (diaphragm), and has a discharge amount of about 1 to 20 (L / min).
また、循環ポンプ８は、レギュレータ９と接続されて空気圧が調整され、洗浄液Ｌを効率良く循環させる。流路中に圧力調整弁（図示省略）を設け、制御装置４により開閉するようにしてもよい。チューブ６を循環する洗浄液Ｌは、吐出口８ｂから洗浄槽２に流入する。 Further, the circulation pump 8 is connected to the regulator 9 to adjust the air pressure, and the cleaning liquid L is efficiently circulated. A pressure adjusting valve (not shown) may be provided in the flow path and opened / closed by the control device 4. The cleaning liquid L circulating in the tube 6 flows into the cleaning tank 2 from the discharge port 8b.
本実施形態では、洗浄液として、主に水酸化ナトリウムを含む専用液を用いるが、水酸化カリウム、炭酸ナトリウム等の強アルカリ溶液、又はこれらの強アルカリ溶液（少なくとも１以上を含む溶液）と、界面活性剤等の他の物質との混合溶液を用いてもよい。これにより、酸化物の除去性能が高まり、確実に金型Ｍを洗浄することができる。 In the present embodiment, a special solution mainly containing sodium hydroxide is used as the cleaning solution, but it is interfaced with a strong alkaline solution such as potassium hydroxide or sodium carbonate, or a strong alkaline solution thereof (a solution containing at least one or more). A mixed solution with another substance such as an activator may be used. As a result, the oxide removing performance is improved, and the mold M can be reliably cleaned.
金型Ｍから除去された異物は、洗浄槽２の表面に浮き上がる。このため、チューブ６で洗浄槽２の洗浄液Ｌを吸引した後、フィルタ装置１０に誘導する。フィルタ装置１０は内部に筒状のフィルタが多数配置され、通過する洗浄液Ｌから異物が取り除かれる。そして、洗浄液Ｌは、再び循環ポンプ８へ向かうチューブ６に戻る。このような異物を収集するため、オーバーフロー槽を洗浄槽２に隣接する位置に設け、そこからフィルタ装置１０へ誘導してもよい。これにより、異物が金型Ｍに再付着することを防止することができる。 The foreign matter removed from the mold M floats on the surface of the cleaning tank 2. Therefore, after sucking the cleaning liquid L of the cleaning tank 2 with the tube 6, it is guided to the filter device 10. A large number of tubular filters are arranged inside the filter device 10, and foreign matter is removed from the passing cleaning liquid L. Then, the cleaning liquid L returns to the tube 6 heading for the circulation pump 8 again. In order to collect such foreign matter, an overflow tank may be provided at a position adjacent to the cleaning tank 2 and guided to the filter device 10 from there. This makes it possible to prevent foreign matter from reattaching to the mold M.
次に、図２を参照して、洗浄対象の金型Ｍの内部に洗浄液Ｌを注入する態様について説明する。 Next, a mode in which the cleaning liquid L is injected into the mold M to be cleaned will be described with reference to FIG.
図示するチューブ６は、循環ポンプ８の吐出口８ｂから洗浄槽２に向かうチューブである。図１で示したように、チューブ６は、取付具５を介して１個の金型Ｍに接続してもよいが、継ぎ手７ａ，７ｂを用いて同時に複数の金型（金型Ｍ１〜Ｍ３）と接続することもできる。 The tube 6 shown is a tube that goes from the discharge port 8b of the circulation pump 8 to the cleaning tank 2. As shown in FIG. 1, the tube 6 may be connected to one mold M via a fixture 5, but a plurality of molds (molds M1 to M3) may be simultaneously used by using joints 7a and 7b. ) Can also be connected.
ここでは、チューブ６と接続された継ぎ手７ａにより、流路をチューブ６ａとチューブ６ｂとに分岐させている。チューブ６ａの、継ぎ手７ａと反対側の端部には金型Ｍ１が接続され、チューブ６ｂの、継ぎ手７ａと反対側の端部には継ぎ手７ｂが接続されている。 Here, the flow path is branched into the tube 6a and the tube 6b by the joint 7a connected to the tube 6. The mold M1 is connected to the end of the tube 6a opposite to the joint 7a, and the joint 7b is connected to the end of the tube 6b opposite to the joint 7a.
チューブ６ａは、取付具５ａを介して金型Ｍ１と接続されている。金型Ｍ１には、取付具５ａを嵌入する開口（雌型ネジ孔）が設けられているため（詳細は後述する）、金型Ｍ１に注入される洗浄液Ｌの流速がある程度速くても、取付具５ａが外れることはない。なお、金型Ｍ１の内部を通過した洗浄液Ｌは、金型Ｍ１の多孔質の壁面から少しずつ流出する。 The tube 6a is connected to the mold M1 via a fixture 5a. Since the mold M1 is provided with an opening (female screw hole) for fitting the fixture 5a (details will be described later), the mold M1 can be mounted even if the flow velocity of the cleaning liquid L injected into the mold M1 is relatively high. The tool 5a will not come off. The cleaning liquid L that has passed through the inside of the mold M1 gradually flows out from the porous wall surface of the mold M1.
また、チューブ６ｂと接続された継ぎ手７ｂにより、流路をチューブ６ｂ１とチューブ６ｂ２とに分岐させている。より詳細には、チューブ６ｂ１の、継ぎ手７ｂと反対側の端部には金型Ｍ２が接続され、チューブ６ｂ２の、継ぎ手７ｂと反対側の端部には金型Ｍ３が接続されている。なお、チューブ６ｂ１は取付具５ｂ１を介して金型Ｍ２と接続され、チューブ６ｂ２は取付具５ｂ２を介して金型Ｍ３と接続されている。 Further, the flow path is branched into the tube 6b1 and the tube 6b2 by the joint 7b connected to the tube 6b. More specifically, the mold M2 is connected to the end of the tube 6b1 opposite to the joint 7b, and the mold M3 is connected to the end of the tube 6b2 opposite to the joint 7b. The tube 6b1 is connected to the mold M2 via the fixture 5b1, and the tube 6b2 is connected to the mold M3 via the fixture 5b2.
このように、複数の継ぎ手を用いることで、原理的には一度に多数の金型の洗浄が可能となる。しかしながら、分岐する度に流速が減衰していくため、一度に洗浄可能な金型は最大でも５個程度である。 In this way, by using a plurality of joints, in principle, a large number of molds can be washed at one time. However, since the flow velocity decreases each time it branches, the maximum number of molds that can be washed at one time is about five.
次に、図３Ａ、図３Ｂにおいて、通気測定の結果を示し、実施形態の金型洗浄装置１によるテスト金型の洗浄効果について説明する。 Next, in FIGS. 3A and 3B, the results of the aeration measurement are shown, and the cleaning effect of the test mold by the mold cleaning device 1 of the embodiment will be described.
まず、図３Ａに、金型Ａ（成形材：エラストマー）の通気測定の結果を示す。金型Ａは、型番「３０２−１Ｒ」（以下、金型ＡＲ）、型番「３０２−１Ｌ」（以下、金型ＡＬ）の２つで構成される。通気測定の際、金型ＡＲ及び金型ＡＬの上面に設けられた開口に取付具を挿入し、さらにチューブに接続する。測定時の空圧は、０．６ＭＰａ（メガパスカル）とした。 First, FIG. 3A shows the result of air flow measurement of the mold A (molding material: elastomer). Mold A is model number "302-1R" (hereinafter, the mold A R), model number "302-1L" (hereinafter, the mold A L) consists of two parts. During ventilation measurements, insert the fixture into the opening provided on the upper surface of the mold A R and the mold A L, further connected to the tube. The air pressure at the time of measurement was 0.6 MPa (megapascal).
金型作成直後の流速は、金型ＡＲが２．７（Ｌ／ｍｉｎ）、金型ＡＬが２．１（Ｌ／ｍｉｎ）であった。また、金型ＡＲ及び金型ＡＬを用いて部品（３６０ショット）を成形した後の流速は、金型ＡＲが２．２〜２．５（Ｌ／ｍｉｎ）、金型ＡＬが１．２〜１．５（Ｌ／ｍｉｎ）と、内部の目詰りが生じて流速が低下した。 Flow rate just created mold, the mold A R is 2.7 (L / min), the mold A L was 2.1 (L / min). Further, the flow rate of after forming the part (360 shots) using a die A R and the mold A L Mold A R is 2.2 to 2.5 (L / min), the mold A L is At 1.2 to 1.5 (L / min), internal clogging occurred and the flow velocity decreased.
その後、金型洗浄装置１により、これまで説明した方法で金型Ａを洗浄し、再度、通気測定を行った。その結果、金型ＡＲが２．７（Ｌ／ｍｉｎ）、金型ＡＬが１．９（Ｌ／ｍｉｎ）となり、それぞれ金型作成直後に近い流速（金型ＡＲについては、金型作成直後と同じ）が得られた。 After that, the mold A was cleaned by the mold cleaning device 1 by the method described so far, and the aeration measurement was performed again. As a result, the mold A R is 2.7 (L / min), the mold A L is 1.9 (L / min), and the the flow rate (mold A R close immediately after each mold creation Mold (Same as immediately after creation) was obtained.
次に、図３Ｂに、金型Ｂ（成形材：ポリアミドＭＸＤ、ＧＦ（ガラス繊維）３０％）の通気測定の結果を示す。金型Ｂは、上面左端に取付具を挿入する開口がある。測定時の空圧は、金型Ａと同じ０．６ＭＰａとした。 Next, FIG. 3B shows the results of aeration measurement of mold B (molding material: polyamide MXD, GF (glass fiber) 30%). The mold B has an opening at the left end of the upper surface into which the fixture is inserted. The air pressure at the time of measurement was 0.6 MPa, which is the same as that of the mold A.
金型Ｂの金型作成直後の流速は、９．５（Ｌ／ｍｉｎ）であった。金型Ｂを用いて成形作業をすると、１．５日で目詰まりが生じたが、このとき、０．３〜０．６（Ｌ／ｍｉｎ）と、著しく流速が低下した。 The flow velocity of the mold B immediately after the mold was prepared was 9.5 (L / min). When the molding work was performed using the mold B, clogging occurred in 1.5 days, but at this time, the flow velocity was significantly reduced to 0.3 to 0.6 (L / min).
その後、従来の方法で金型Ｂを洗浄して流速を測定したが、０．６〜１．０（Ｌ／ｍｉｎ）と、ほとんど改善が見られなかった。そこで、金型洗浄装置１により、これまで説明した方法で金型Ｂを洗浄し、再度、通気測定を行った。その結果、２．９（Ｌ／ｍｉｎ）となり、流速が回復した。このように、金型洗浄装置１による洗浄は、多孔質の金型の洗浄効果が高いことが明らかとなった。 After that, the mold B was washed by a conventional method and the flow velocity was measured, but the flow rate was 0.6 to 1.0 (L / min), and almost no improvement was observed. Therefore, the mold B was cleaned by the mold cleaning device 1 by the method described so far, and the aeration measurement was performed again. As a result, it became 2.9 (L / min), and the flow velocity recovered. As described above, it has been clarified that the cleaning by the mold cleaning device 1 has a high cleaning effect of the porous mold.
上記説明は、本発明の実施形態の一部であり、これ以外にも種々の実施形態が考えられる。特に図１の金型洗浄装置１の流路は、最も簡易な例を示したに過ぎない。 The above description is a part of the embodiment of the present invention, and various other embodiments can be considered. In particular, the flow path of the mold cleaning device 1 in FIG. 1 shows only the simplest example.
例えば、金型洗浄装置１により一度に複数の金型の洗浄を洗浄する場合、そのうちの１つの金型の目詰まりがひどく、洗浄液Ｌが通過しなくなることがある。このような場合、循環ポンプ８が停止してしまうため、予めバイパス流路を設けておき、バイパス流路から洗浄液を排出できるようにしてもよい。 For example, when cleaning a plurality of molds at once by the mold cleaning device 1, one of the molds may be severely clogged and the cleaning liquid L may not pass through. In such a case, since the circulation pump 8 stops, a bypass flow path may be provided in advance so that the cleaning liquid can be discharged from the bypass flow path.
１ 金型洗浄装置
２ 洗浄槽
２ａ 洗浄カゴ
３ 加熱ヒータ
４ 制御装置
５，５ａ，５ｂ１，５ｂ２ 取付具
６，６ａ，６ｂ，６ｂ１，６ｂ２ チューブ
７ａ，７ｂ 継ぎ手
８ 循環ポンプ
８ａ 吸引口
８ｂ 吐出口
９ レギュレータ
１０ フィルタ装置
Ｍ，Ｍ１〜Ｍ３ 金型
Ｌ 洗浄液
1 Mold cleaning device 2 Cleaning tank 2a Cleaning basket 3 Heating heater 4 Control device 5,5a, 5b1,5b2 Fixtures 6,6a, 6b, 6b1,6b2 Tubes 7a, 7b Joint 8 Circulation pump 8a Suction port 8b Discharge port 9 Regulator 10 Filter device M, M1 to M3 Mold L Cleaning liquid
本発明は、洗浄槽内の洗浄液に多孔質の金型を浸して、超音波振動により前記金型の表面及び内部を洗浄する金型洗浄装置であって、前記洗浄液の温度を調整するヒータと、前記洗浄液を送出するポンプと、前記金型と接触した取付具を介して、当該金型の内部に前記洗浄液を注入するチューブと、を備え、前記洗浄液が強アルカリ溶液であることを特徴とする。 The present invention is a mold cleaning device for immersing a porous mold in a cleaning liquid in a cleaning tank and cleaning the surface and the inside of the mold by ultrasonic vibration, and a heater for adjusting the temperature of the cleaning liquid. A pump for delivering the cleaning liquid and a tube for injecting the cleaning liquid into the inside of the mold via a fitting in contact with the mold are provided, and the cleaning liquid is a strong alkaline solution. To do.
本発明の金型洗浄装置は、多孔質の金型を洗浄液に浸して洗浄する超音波洗浄であるが、ヒータにより温度調整した洗浄液をポンプで送出し、前記金型と取付具で接続されたチューブから前記金型の内部に直接、洗浄液を注入する。これにより、前記金型の表面に形成された細かい気孔から洗浄液が少しずつ排出され、前記金型の内部に付着した破片、粉末等を効率良く洗浄することができる。 The mold cleaning device of the present invention is an ultrasonic cleaning in which a porous mold is immersed in a cleaning liquid for cleaning, but a cleaning liquid whose temperature is adjusted by a heater is sent out by a pump and connected to the mold by a fixture. The cleaning liquid is injected directly from the tube into the inside of the mold. As a result, the cleaning liquid is gradually discharged from the fine pores formed on the surface of the mold, and the debris, powder, etc. adhering to the inside of the mold can be efficiently cleaned.
Claims (4)
前記洗浄液の温度を調整するヒータと、
前記洗浄液を送出するポンプと、
前記金型と接触した取付具を介して、当該金型に前記洗浄液を注入するチューブと、を備え、
前記洗浄液が強アルカリ溶液であることを特徴とする金型洗浄装置。 A mold cleaning device that immerses a porous mold in the cleaning liquid in the cleaning tank and cleans the surface and inside of the mold by ultrasonic vibration.
A heater that adjusts the temperature of the cleaning liquid and
A pump that delivers the cleaning liquid and
A tube for injecting the cleaning liquid into the mold via a fitting in contact with the mold is provided.
A mold cleaning device characterized in that the cleaning liquid is a strong alkaline solution.
前記チューブには、当該チューブを分岐させる継ぎ手が取り付けられていることを特徴とする金型洗浄装置。 In the mold cleaning device according to claim 1,
A mold cleaning device characterized in that a joint for branching the tube is attached to the tube.
前記ヒータは、前記洗浄液が４０℃以上となるように調整することを特徴とする金型洗浄装置。 In the mold cleaning device according to claim 1 or 2.
The heater is a mold cleaning device characterized in that the cleaning liquid is adjusted to 40 ° C. or higher.
前記洗浄液は、水酸化ナトリウム、水酸化カリウム、炭酸ナトリウムのうち少なくとも１つを含み、前記金型の洗浄用に調合された強アルカリ溶液であることを特徴とする金型洗浄装置。 In the mold cleaning device according to any one of claims 1 to 3,
A mold cleaning apparatus, wherein the cleaning liquid contains at least one of sodium hydroxide, potassium hydroxide, and sodium carbonate, and is a strong alkaline solution prepared for cleaning the mold.
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