JPH0349782Y2 - - Google Patents
Info
- Publication number
- JPH0349782Y2 JPH0349782Y2 JP8509288U JP8509288U JPH0349782Y2 JP H0349782 Y2 JPH0349782 Y2 JP H0349782Y2 JP 8509288 U JP8509288 U JP 8509288U JP 8509288 U JP8509288 U JP 8509288U JP H0349782 Y2 JPH0349782 Y2 JP H0349782Y2
- Authority
- JP
- Japan
- Prior art keywords
- curing agent
- tube
- heat transfer
- vaporized
- agent supply
- 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
- 239000003795 chemical substances by application Substances 0.000 claims description 116
- 238000010438 heat treatment Methods 0.000 claims description 43
- 238000000465 moulding Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 34
- 239000011230 binding agent Substances 0.000 claims description 21
- 238000009834 vaporization Methods 0.000 claims description 20
- 230000008016 vaporization Effects 0.000 claims description 20
- 239000004576 sand Substances 0.000 claims description 18
- 238000003860 storage Methods 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 238000005266 casting Methods 0.000 description 7
- TZIHFWKZFHZASV-UHFFFAOYSA-N methyl formate Chemical compound COC=O TZIHFWKZFHZASV-UHFFFAOYSA-N 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 239000006200 vaporizer Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 230000002528 anti-freeze Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005243 fluidization Methods 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Casting Devices For Molds (AREA)
- Mold Materials And Core Materials (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は、粘結剤と混合され所定形状に成形さ
れている砂を鋳造用鋳型とするために硬化させる
硬化剤を供給させるための硬化剤供給装置に関す
るものである。[Detailed description of the invention] [Industrial application field] The present invention is a method for supplying a hardening agent to harden sand that has been mixed with a binder and molded into a predetermined shape to be used as a casting mold. This invention relates to a drug supply device.
一般に各種鋳造品を製造するために使用されて
いる鋳造用鋳型は、例えば水溶性フエノール樹脂
の如き粘結剤と混合されている砂を造型容器内で
鋳型模型を利用して所定形状に成形した後にこの
粘結剤と混合されている砂に鋳造用鋳型として使
用に耐え得る強度を付与するため例えば蟻酸メチ
ールの如き硬化剤を造型容器内に供給して粘結剤
を硬化させることによつて製造されていた。
Casting molds, which are generally used to manufacture various cast products, are made by molding sand mixed with a binder such as water-soluble phenolic resin into a predetermined shape using a mold model in a molding container. In order to give the sand mixed with this binder a strength sufficient to withstand use as a casting mold, a hardening agent such as methyl formate is supplied into the molding container to harden the binder. It was manufactured.
このような鋳造用鋳型を製造する際の従来の硬
化剤の供給装置について次に図面により説明す
る。 Next, a conventional hardening agent supply device for manufacturing such a casting mold will be explained with reference to the drawings.
第4図は従来の硬化剤の供給装置の1例を示す
説明図であり、硬化剤貯液槽1内に収納されてい
る液状の硬化剤2は供給空気圧調節弁3を経てそ
の圧力を調節されて圧縮空気供給管4から供給さ
れた圧縮空気の圧力によつて硬化剤供給弁8及び
流量調節具9を備えた硬化剤供給管7を経て液状
のまま気化器32に供給され、供給空気圧調整弁
11及び空気供給弁12を備えた空気供給管10
から加熱装置33内に供給されその加熱装置33
内に別途供給されている蒸気などの加熱源15に
よつて加熱された圧縮空気と前記気化器32内で
混合されて気化された後、前記加熱装置33の加
熱容器の周囲を経て再度加熱された後に、粘結剤
と混合されている砂が所定形状に成形されている
造型容器22内に気化状硬化剤供給管17を経て
供給される構造になつていた。 FIG. 4 is an explanatory diagram showing an example of a conventional curing agent supply device, in which the pressure of the liquid curing agent 2 stored in the curing agent storage tank 1 is adjusted through the supply air pressure regulating valve 3. The pressure of the compressed air supplied from the compressed air supply pipe 4 is supplied to the vaporizer 32 in a liquid state through the curing agent supply pipe 7 equipped with a curing agent supply valve 8 and a flow rate regulator 9, and the supply air pressure is increased. Air supply pipe 10 with regulating valve 11 and air supply valve 12
is supplied into the heating device 33 from the heating device 33.
After being mixed and vaporized in the vaporizer 32 with compressed air heated by a heat source 15 such as steam that is separately supplied into the vaporizer 32, the air is heated again through the heating container of the heating device 33. After that, the sand mixed with the binder is supplied into the molding container 22, which is formed into a predetermined shape, through the vaporized curing agent supply pipe 17.
このような従来の硬化剤供給装置では、気化器
32で気化された硬化剤2が気化状硬化剤供給管
17を経て造型容器22へ供給されるまでの過程
において気化状硬化剤供給管17の外面からの放
熱によつて硬化剤2が気化した状態から凝縮液化
した状態へと移行して造型容器22内の粘結剤と
混合されている砂にまんべんなく行き渡らなくな
り、その結果硬化剤としての効果が充分に発揮さ
れないという欠点があつた。
In such a conventional hardening agent supply device, the hardening agent 2 vaporized in the vaporizer 32 is supplied to the molding container 22 through the vaporized hardening agent supply pipe 17 . Due to heat radiation from the outside, the hardening agent 2 changes from a vaporized state to a condensed and liquefied state, and is no longer evenly distributed throughout the sand mixed with the binder in the molding container 22, resulting in its effectiveness as a hardening agent. The drawback was that it was not fully demonstrated.
本考案はかかる従来の硬化剤供給装置の欠点を解
消し、粘結剤と混合されている砂が所定形状に成
形されている造型容器内に硬化剤を凝縮液化しな
い気化状態で供給することができる硬化剤供給装
置を提供することを課題とする。The present invention solves the drawbacks of the conventional hardening agent supply device, and makes it possible to supply the hardening agent in a vaporized state without condensation and liquefaction into a molding container in which sand mixed with a binder is molded into a predetermined shape. An object of the present invention is to provide a curing agent supply device that can be used.
本考案者らはかかる課題を解決すべく種々検討
した結果、従来の硬化剤供給装置のように液状の
硬化剤と加熱空気とを混合して硬化剤の気化を行
つた後にそのまま造型容器に供給するのではな
く、液状の硬化剤と圧縮空気とを混合した後にそ
の混合体を伝熱用液体が充填されている気化加熱
装置内の伝熱用液体の中に浸されている伝熱管内
を流動させることによつて加熱することにより硬
化剤を完全に気化させ、しかる後に該伝熱管の出
口と粘結剤が混合されている砂が所定形状に成形
されている造型容器とを連通している気化状硬化
剤供給管を経て造型容器に気化状の硬化剤を供給
する際に前記気化状硬化剤供給管に沿つて流動さ
せるように前記気化加熱装置から伝熱用液体を循
環させて気化状の硬化剤を加温する構造とすれば
良いことを究明して本考案を完成したのである。
As a result of various studies to solve this problem, the inventors of the present invention found that, like a conventional hardening agent supply device, the liquid hardening agent is mixed with heated air, the hardening agent is vaporized, and then the hardening agent is directly supplied to the molding container. Rather than mixing the liquid curing agent and compressed air, the mixture is passed through a heat transfer tube immersed in the heat transfer liquid in a vaporization heating device filled with the heat transfer liquid. The curing agent is completely vaporized by heating through fluidization, and then the outlet of the heat transfer tube is communicated with a molding container in which the sand mixed with the binding agent is molded into a predetermined shape. When supplying the vaporized hardening agent to the molding container through the vaporized hardening agent supply pipe, the heat transfer liquid is circulated from the vaporization heating device so as to flow along the vaporized hardening agent supply pipe. They discovered that it was sufficient to use a structure that heated the curing agent, and completed the present invention.
以下、図面により本考案に係る硬化剤供給装置
の1実施例について詳細に説明する。 EMBODIMENT OF THE INVENTION Hereinafter, one embodiment of the curing agent supply device according to the present invention will be described in detail with reference to the drawings.
第1図は本考案に係る硬化剤供給装置の1実施
例の説明図、第2図は第1図におけるA−A線拡
大端面図、第3図は第2図における他の実施例を
示す拡大端面図である。 Fig. 1 is an explanatory diagram of one embodiment of the curing agent supply device according to the present invention, Fig. 2 is an enlarged end view taken along line A-A in Fig. 1, and Fig. 3 shows another embodiment in Fig. 2. FIG. 3 is an enlarged end view.
図面中、1は常温近辺では液状である硬化剤2
が液体の状態で収納されている硬化剤貯液槽であ
り、この液状の硬化剤2が蟻酸メチールである場
合を例に取り上げて説明すると蟻酸メチールはそ
の沸点が31.5℃と非常に低いので夏期にこの沸点
以上に温度が上昇しないように硬化剤貯液槽1の
上部には供給空気圧調節弁3を経てその圧力を調
節されて圧縮空気供給管4から供給された圧縮空
気によつてその圧力が一定圧力に保持されて沸騰
が防止されていると共に必要に応じて冷却コイル
5によつて硬化剤2の温度が沸点以下に維持され
るようになつている。6は硬化剤貯液槽1の上部
に設けられており、硬化剤貯液槽1内の圧力の過
上昇を防止するための安全弁である。7は硬化剤
貯液槽1内の硬化剤2を硬化剤供給弁8及び流量
調節具9を経て液状のまま供給する硬化剤供給
管、10は供給空気圧調整弁11及び空気供給弁
12を経て圧縮空気を供給する空気供給管であ
り、この空気供給管10の先端は前記流量調節具
9を経た硬化剤供給管7に接続されている。13
は加熱源15(図示した実施例では電熱ヒータ
ー)によつて加熱される水や寒冷地の場合には自
動車用不凍液の如き伝熱用液体14が内部に収納
されておりその伝熱用液体14の中に伝熱管16
が浸されて設置されている気化加熱装置であり、
伝熱管16は前記供給空気圧調整弁11を経てそ
の圧力を調整されて空気供給管10から供給され
た圧縮空気と前記硬化剤貯液槽1から流量調節具
9を経て流量を調整されて硬化剤供給管7から供
給された硬化剤2との混合体がその内部を流動す
るようにその入口側が硬化剤供給管7の端部に接
続されている。17は伝熱管16の出口側と連結
され気化加熱装置13によつて加熱されて硬化剤
2が気化された前記圧縮空気と硬化剤2との混合
体を粘結剤と混合されている砂23が所定形状に
成形されている造型容器22内に供給する気化状
硬化剤供給管である。18は気化加熱装置13と
造型容器22の直前の位置にある気化状硬化剤供
給管17に近接した位置とを連結する伝熱用液体
14用の循環パイプ、19は循環パイプ18の途
中に配設されている循環ポンプであり、この循環
ポンプ19による伝熱用液体14の循環方向は図
示した実施例の方向が造型容器22内に流入する
直前の硬化剤2の温度を気化加熱装置13による
加熱温度とほぼ等しい温度に維持できるので好ま
しいが、必ずしもこの方向に限定されるものでは
ない。20は循環ポンプ19の作用により循環さ
れる伝熱用液体14を気化加熱装置13の伝熱管
16の出口側と造型容器22の直前の位置との間
で気化状硬化剤供給管17に沿つて流動させる加
温管であり、この加温管20としては第2図に示
す如く気化状硬化剤供給管17の周囲に設けられ
ている二重管である場合や、第3図に示す如く気
化状硬化剤供給管17に並設されたトレース配管
方式の管であつてこの加温管20と気化状硬化剤
供給管17とが保温材21で被覆された構造であ
つても良い。22は造型容器であつて上部22a
と下部22bとに分割されている。24は上下動
装置であつて、そのピストンロツド24aは第1
図に示す如く硬化材供給管17の管端が取り付け
られている管端板34に連結されており、通常は
この管端板34を造型容器22の上部22aから
上方に引き離しているが、硬化剤を造型容器22
に供給するときは第1図に示す如く管端板34を
造型容器22の上部22aに押し付けて密着させ
るように作用する。このような状態で供給された
硬化剤は造型容器22の上部22a内の粘結剤と
混合されている砂23内を流下して造型容器22
の下部22bに至り、造型容器22内の砂23を
硬化させる。余剰の硬化剤は造型容器22の下部
22bの底板に設けられた通気孔22baから造
型容器22の外に排出される。25は造型容器2
2を搬入・搬出するコンベア、26は造型容器2
2及びコンベア25を収納して造型容器22の下
部22bの底板に設けられている通気孔22ba
から流出してくる硬化剤2を外部に漏洩させない
ためのガス処理室、27はガス処理室26の入口
に設置されている扉、28は扉27を開閉させる
ための扉開閉装置、29はガス処理室26に連通
しており造型容器22の下部22bの底板に設け
られている通気孔22baからガス処理室26内
に流出してきた硬化剤2を排出させるための排気
ダクトであつて、この排気ダクト29には排気フ
アン30が設置されている。なお、31は造型容
器22内の粘結剤と混合されている砂23内に埋
設されている鋳型模型である。 In the drawing, 1 is a curing agent 2 that is liquid at around room temperature.
is a hardening agent storage tank that is stored in a liquid state, and this liquid hardening agent 2 is methyl formate. Methyl formate has a very low boiling point of 31.5°C, so it is not suitable for summer use. In order to prevent the temperature from rising above this boiling point, the upper part of the curing agent storage tank 1 is provided with a supply air pressure regulating valve 3, and the pressure is regulated by the compressed air supplied from the compressed air supply pipe 4. is maintained at a constant pressure to prevent boiling, and the temperature of the curing agent 2 is maintained below its boiling point by a cooling coil 5 as required. Reference numeral 6 is a safety valve provided at the upper part of the hardening agent storage tank 1 to prevent the pressure inside the hardening agent storage tank 1 from rising excessively. 7 is a curing agent supply pipe that supplies the curing agent 2 in the curing agent storage tank 1 in liquid form via a curing agent supply valve 8 and a flow rate regulator 9; This is an air supply pipe for supplying compressed air, and the tip of this air supply pipe 10 is connected to the hardening agent supply pipe 7 via the flow rate regulator 9. 13
A heat transfer liquid 14 such as water heated by a heat source 15 (an electric heater in the illustrated embodiment) or antifreeze for automobiles in the case of a cold region is stored inside the heat transfer liquid 14. Heat exchanger tube 16 inside
It is a vaporization heating device that is installed with water immersed in it,
The heat transfer tube 16 receives the compressed air supplied from the air supply pipe 10 whose pressure is adjusted via the supply air pressure regulating valve 11 and the curing agent whose flow rate is adjusted from the curing agent liquid storage tank 1 via the flow rate regulator 9. Its inlet side is connected to the end of the curing agent supply pipe 7 so that the mixture with the curing agent 2 supplied from the supply pipe 7 flows therein. Sand 23 17 is connected to the outlet side of the heat transfer tube 16 and is mixed with a binder and a mixture of the compressed air and the hardening agent 2, which is heated by the vaporization heating device 13 to vaporize the hardening agent 2. This is a vaporized curing agent supply pipe that supplies the vaporized curing agent into the molding container 22 which is molded into a predetermined shape. 18 is a circulation pipe for the heat transfer liquid 14 that connects the vaporization heating device 13 and a position close to the vaporized curing agent supply pipe 17 located immediately in front of the molding container 22; 19 is a circulation pipe disposed in the middle of the circulation pipe 18; The direction in which the heat transfer liquid 14 is circulated by the circulation pump 19 is the direction in which the temperature of the hardening agent 2 immediately before it flows into the molding container 22 is adjusted by the vaporization heating device 13. This is preferable because the temperature can be maintained at approximately the same temperature as the heating temperature, but it is not necessarily limited to this direction. 20 supplies the heat transfer liquid 14 that is circulated by the action of the circulation pump 19 between the outlet side of the heat transfer tube 16 of the vaporization heating device 13 and a position immediately in front of the molding container 22 along the vaporized hardening agent supply pipe 17. This heating tube 20 may be a double tube installed around the vaporized curing agent supply pipe 17 as shown in FIG. The heating tube 20 and the vaporized curing agent supply pipe 17 may be covered with a heat insulating material 21, which is a trace piping type pipe arranged in parallel with the vaporized curing agent supply pipe 17. 22 is a molded container with an upper part 22a
and a lower part 22b. 24 is a vertical movement device, and its piston rod 24a is the first
As shown in the figure, the tube end of the hardening material supply tube 17 is connected to an attached tube end plate 34, and normally this tube end plate 34 is pulled upward from the upper part 22a of the molding container 22, but the hardening material supply tube 17 is The agent is molded into a container 22.
When feeding, the tube end plate 34 is pressed against the upper part 22a of the molding container 22, as shown in FIG. The hardening agent supplied in this state flows down into the sand 23 mixed with the binder in the upper part 22a of the molding container 22, and flows down into the molding container 22.
The sand 23 in the molding container 22 is hardened. Excess curing agent is discharged to the outside of the molding container 22 through a ventilation hole 22ba provided in the bottom plate of the lower part 22b of the molding container 22. 25 is the molded container 2
2 is a conveyor for carrying in and carrying out 2, 26 is a molded container 2
2 and the conveyor 25, and a ventilation hole 22ba provided in the bottom plate of the lower part 22b of the molding container 22.
27 is a door installed at the entrance of the gas processing chamber 26; 28 is a door opening/closing device for opening and closing the door 27; 29 is a gas This is an exhaust duct for discharging the curing agent 2 flowing into the gas processing chamber 26 from a vent hole 22ba that communicates with the processing chamber 26 and is provided in the bottom plate of the lower part 22b of the molding container 22. An exhaust fan 30 is installed in the duct 29. In addition, 31 is a mold model buried in the sand 23 mixed with the binder in the molding container 22.
このような構造の本考案に係る硬化剤供給装置
においては、液状の硬化剤2が内部に収納されて
いる硬化剤貯液槽1内から硬化剤2は硬化剤供給
弁8及び流量調節具9を経て液状のまま硬化剤供
給管7内を流動する過程で、供給空気圧調整弁1
1及び空気供給弁12を経て空気供給管10から
供給される圧縮空気と混合されて気化加熱装置1
3の伝熱管16内に流入する。この気化加熱装置
13においてはその内部に収納されている伝熱用
液体14が加熱源15によつて加熱されており、
伝熱管16はその伝熱用液体14の中に浸されて
設置されているので、伝熱管16内を流動する前
記空気供給管10から供給された圧縮空気と前記
硬化剤供給管7から供給された硬化剤2との混合
体は伝熱用液体14により加熱されて硬化剤2が
気化された状態で気化状硬化剤供給管17を経て
粘結剤と混合されている砂23が所定形状に成形
されている造型容器22内に供給される。この
際、気化加熱装置13内の伝熱用液体14は循環
ポンプ19により気化加熱装置13の伝熱管16
の出口側と造型容器22の直前の位置との間を気
化状硬化剤供給管17に沿つて加温管20内を流
動せしめられるので、気化状硬化剤供給管17内
を流動していく硬化剤2は加温管20内を流動せ
しめられる伝熱用液体14の熱を気化状硬化剤供
給管17を介して伝達されてその温度の低下が生
じないため、気化された状態を維持したまま上下
に二分割されている造型容器22内に流入し、造
型容器22内の砂23と混合されている粘結剤を
硬化させて使用に耐え得る強度の鋳造用鋳型とさ
せる。そして粘結剤を硬化させるのに使用されな
かつた余剰の硬化剤2は、造型容器22の底板に
設けられている通気孔22baからガス処理室2
6内に流出し、排気フアン30の作用により排気
ダクト29を経て排出させるのである。
In the hardening agent supply device according to the present invention having such a structure, the hardening agent 2 is supplied from the hardening agent storage tank 1 in which the liquid hardening agent 2 is stored through the hardening agent supply valve 8 and the flow rate regulator 9. In the process of flowing through the curing agent supply pipe 7 in a liquid state, the supply air pressure regulating valve 1
1 and the compressed air supplied from the air supply pipe 10 via the air supply valve 12 to the vaporization heating device 1.
3 into the heat exchanger tubes 16. In this vaporization heating device 13, a heat transfer liquid 14 stored therein is heated by a heat source 15.
Since the heat transfer tube 16 is installed immersed in the heat transfer liquid 14, the compressed air supplied from the air supply tube 10 flowing inside the heat transfer tube 16 and the hardening agent supply tube 7 are mixed. The mixture with the hardening agent 2 is heated by the heat transfer liquid 14, and the hardening agent 2 is vaporized through the vaporized hardening agent supply pipe 17, and the sand 23 mixed with the binder is shaped into a predetermined shape. It is supplied into a molded container 22 that is being molded. At this time, the heat transfer liquid 14 in the vaporization heating device 13 is transferred to the heat transfer tube 16 of the vaporization heating device 13 by the circulation pump 19.
Since the curing agent flowing inside the vaporized hardening agent supply pipe 17 is caused to flow inside the heating tube 20 along the vaporized hardening agent supply pipe 17 between the outlet side and the position immediately in front of the molding container 22 The curing agent 2 maintains its vaporized state because the heat of the heat transfer liquid 14 flowing through the heating tube 20 is transferred through the vaporized curing agent supply pipe 17 and its temperature does not decrease. The binder flows into the molding container 22 which is divided into upper and lower halves, and hardens the binder mixed with the sand 23 in the molding container 22 to form a casting mold strong enough to withstand use. The surplus hardening agent 2 that is not used to harden the binder is then discharged from the gas processing chamber 2 through the ventilation hole 22ba provided in the bottom plate of the molding container 22.
6 and is discharged through the exhaust duct 29 by the action of the exhaust fan 30.
以上詳述した如き本考案に係る硬化剤供給装置
は、従来の硬化剤供給装置の如く液状の硬化剤を
加熱装置で加熱された空気と気化器内で初めて混
合して気化するのではなく、予め液状の硬化剤と
圧縮空気とを混合した後にその混合体を伝熱用液
体が充填されている気化加熱装置内の伝熱用液体
の中に浸されて設置されている伝熱管内を流動さ
せることによつて加熱して完全に気化させ、しか
る後に該伝熱管の出口と粘結剤が混合されている
砂が所定形状に成形されている造型容器とを連通
している気化状硬化剤の供給管を経て造型容器に
気化状の硬化剤を供給する際に前記気化加熱装置
から伝熱用液体を循環させて前記気化状硬化剤の
供給管に沿つて設けた加温管により気化状の硬化
剤を加熱する構造としたために、気化状の硬化剤
が造型容器に至までに冷却されて凝縮液化した状
態へと移行して造型容器内の粘結剤と混合されて
いる砂にまんべんなく行き渡らなくなることがな
く、更に従来の硬化剤供給装置の如く気化された
硬化剤の温度が低下しないように加熱装置の加熱
容器の周囲に気化した硬化剤の供給管を配設する
ような複雑な配管を必要としない簡単な構造とす
ることができ、硬化剤を気化した状態で造型容器
内の粘結剤と混合されている砂にまんべんなく行
き渡らせることが可能となるのであり、その結果
製造する鋳造用鋳型は粘結剤が硬化剤により確実
に硬化した強度の強いものとなつて鋳造不良もな
くなり、その実用的価値は非常に大きなものであ
る。
The curing agent supply device according to the present invention as described in detail above does not mix liquid curing agent with air heated by a heating device in a vaporizer for the first time and vaporize it, as in conventional curing agent supply devices. After mixing the liquid curing agent and compressed air in advance, the mixture is flowed through a heat transfer tube that is immersed in the heat transfer liquid in a vaporization heating device filled with the heat transfer liquid. The vaporized hardening agent is heated to completely vaporize it by heating, and then the outlet of the heat transfer tube is in communication with the molding container in which the sand mixed with the binder is molded into a predetermined shape. When supplying the vaporized hardening agent to the molding container through the supply pipe, the heat transfer liquid is circulated from the vaporization heating device, and the vaporized hardening agent is heated by the heating pipe installed along the supply pipe of the vaporized hardening agent. Because of the structure in which the hardening agent is heated, the vaporized hardening agent is cooled before reaching the molding container, becomes condensed and liquefied, and spreads evenly over the sand mixed with the binder in the molding container. In order to prevent the curing agent from becoming over-distributed, and to prevent the temperature of the vaporized curing agent from dropping like in conventional curing agent supply devices, a complicated method such as arranging a supply pipe for the vaporized curing agent around the heating container of the heating device is required. It has a simple structure that does not require piping, and it is possible to evenly distribute the hardening agent in a vaporized state to the sand mixed with the binder in the molding container, resulting in faster manufacturing. The casting mold has a high strength in which the binder is reliably hardened by the hardening agent, and casting defects are eliminated, and its practical value is very great.
第1図は本考案に係る硬化剤供給装置の1実施
例の説明図、第2図は第1図におけるA−A線拡
大端面図、第3図は第2図における他の実施例を
示す拡大端面図、第4図は従来の硬化剤供給装置
の1例の説明図である。
図面中、1……硬化剤貯液槽、2……硬化剤、
3……供給空気圧調節弁、4……圧縮空気供給
管、5……冷却コイル、6……安全弁、7……硬
化剤供給管、8……硬化剤供給弁、9……流量調
節具、10……空気供給管、11……供給空気圧
調節弁、12……空気供給弁、13……気化加熱
装置、14……伝熱用液体、15……加熱源、1
6……伝熱管、17……気化状硬化剤供給管、1
8……循環パイプ、19……循環ポンプ、20加
温管、21……保温材、22……造型容器、22
a……上部、22b……下部、22ba……通気
孔、23……粘結剤と混合されている砂、24…
…上下動装置、24a……ピストンロツド、25
……コンベア、26……ガス処理室、27……
扉、28……扉開閉装置、29……排気ダクト、
30……排気フアン、31……鋳型模型、32…
…気化器、33……加熱装置、34……管端板。
Fig. 1 is an explanatory diagram of one embodiment of the curing agent supply device according to the present invention, Fig. 2 is an enlarged end view taken along line A-A in Fig. 1, and Fig. 3 shows another embodiment in Fig. 2. The enlarged end view, FIG. 4, is an explanatory diagram of an example of a conventional curing agent supply device. In the drawings, 1... hardening agent storage tank, 2... hardening agent,
3... Supply air pressure control valve, 4... Compressed air supply pipe, 5... Cooling coil, 6... Safety valve, 7... Curing agent supply pipe, 8... Curing agent supply valve, 9... Flow rate regulator, 10... Air supply pipe, 11... Supply air pressure control valve, 12... Air supply valve, 13... Vaporization heating device, 14... Heat transfer liquid, 15... Heat source, 1
6... Heat exchanger tube, 17... Vaporized hardening agent supply pipe, 1
8... Circulation pipe, 19... Circulation pump, 20 Heating tube, 21... Heat insulating material, 22... Molding container, 22
a...Top part, 22b...Bottom part, 22ba...Vent hole, 23...Sand mixed with binder, 24...
... Vertical movement device, 24a ... Piston rod, 25
...Conveyor, 26...Gas treatment room, 27...
Door, 28...Door opening/closing device, 29...Exhaust duct,
30...Exhaust fan, 31...Mold model, 32...
... vaporizer, 33 ... heating device, 34 ... tube end plate.
Claims (1)
剤貯液槽1と、加熱源15によつて加熱されて
いる気化加熱装置13内の伝熱用液体14の中
に浸されて設置されている伝熱管16へ該硬化
剤貯液槽1内から流量調節具9を経て硬化剤2
と空気供給管10からの圧縮空気との混合体を
導く硬化剤供給管7と、該伝熱管16の出口側
と連結され気化加熱装置13で加熱されて硬化
剤2が気化された前記混合体を粘結剤と混合さ
れている砂23が所定形状に成形されている造
型容器22内に供給する気化状硬化剤供給管1
7と、該気化加熱装置13の伝熱管16の出口
側と造型容器22の直前の位置との間に気化状
硬化剤供給管17に沿つて配設されている加温
管20と、前記気化加熱装置13内の伝熱用液
体14を該加温管20を経て再び気化加熱装置
13内に戻す循環ポンプ19とを備えているこ
とを特徴とする硬化剤供給装置。 2 加温管20が気化状硬化剤供給管17の周囲
に二重管を成す状態に設けられている管である
請求項1に記載の硬化剤供給装置。 3 加温管20が気化状硬化剤供給管17に並設
された管であつて、この加温管20と気化状硬
化剤供給管17とが保温剤21で被覆されてい
る請求項1に記載の硬化剤供給装置。 4 循環ポンプ19が気化加熱装置13内の伝熱
用液体14を先ず造型容器22の直前の位置に
供給して後に気化加熱装置13の伝熱管16の
出口側へ気化状硬化剤供給管17に沿つて流動
させる循環ポンプである請求項1から3までの
いずれか1項に記載の硬化剤供給装置。[Claims for Utility Model Registration] 1. A hardening agent storage tank 1 in which a liquid hardening agent 2 is stored, and a heat transfer liquid 14 in a vaporization heating device 13 that is heated by a heat source 15. The curing agent 2 is supplied from the hardening agent storage tank 1 through the flow rate regulator 9 to the heat transfer tube 16 which is immersed in the heat transfer tube 16.
and a curing agent supply pipe 7 that guides a mixture of compressed air from the air supply pipe 10, and the mixture connected to the outlet side of the heat transfer tube 16 and heated by a vaporization heating device 13 to vaporize the curing agent 2. A vaporized hardening agent supply pipe 1 that supplies sand 23 mixed with a binder into a molding container 22 in which the sand 23 is molded into a predetermined shape.
7, a heating tube 20 disposed along the vaporized curing agent supply pipe 17 between the outlet side of the heat transfer tube 16 of the vaporization heating device 13 and a position immediately in front of the molding container 22; A curing agent supply device comprising a circulation pump 19 that returns the heat transfer liquid 14 in the heating device 13 to the vaporization heating device 13 via the heating tube 20. 2. The hardening agent supply device according to claim 1, wherein the heating tube 20 is a double pipe provided around the vaporized hardening agent supply pipe 17. 3. According to claim 1, the heating tube 20 is a tube installed in parallel with the vaporized hardening agent supply tube 17, and the heating tube 20 and the vaporized hardening agent supply tube 17 are coated with a heat insulating agent 21. The curing agent supply device described. 4. The circulation pump 19 first supplies the heat transfer liquid 14 in the vaporization heating device 13 to a position immediately in front of the molding container 22, and then supplies it to the outlet side of the heat transfer tube 16 of the vaporization heating device 13 to the vaporized curing agent supply pipe 17. The curing agent supply device according to any one of claims 1 to 3, which is a circulation pump for causing flow along the curing agent.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8509288U JPH0349782Y2 (en) | 1988-06-29 | 1988-06-29 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8509288U JPH0349782Y2 (en) | 1988-06-29 | 1988-06-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0211646U JPH0211646U (en) | 1990-01-24 |
JPH0349782Y2 true JPH0349782Y2 (en) | 1991-10-24 |
Family
ID=31309765
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8509288U Expired JPH0349782Y2 (en) | 1988-06-29 | 1988-06-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0349782Y2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58196134U (en) * | 1982-06-24 | 1983-12-27 | アルプス電気株式会社 | Pen support mechanism of pen type recording device |
KR101305842B1 (en) | 2011-06-09 | 2013-09-06 | 기아자동차주식회사 | Double Clutch Transmission Control Method for Vehicle |
KR101305852B1 (en) | 2011-06-09 | 2013-09-06 | 현대자동차주식회사 | Transmission Control Method for Vehicle |
KR101316314B1 (en) | 2011-06-09 | 2013-10-08 | 기아자동차주식회사 | Double Clutch Transmission Control Method for Vehicle |
-
1988
- 1988-06-29 JP JP8509288U patent/JPH0349782Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPH0211646U (en) | 1990-01-24 |
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