JPS624373Y2 - - Google Patents
Info
- Publication number
- JPS624373Y2 JPS624373Y2 JP1982082094U JP8209482U JPS624373Y2 JP S624373 Y2 JPS624373 Y2 JP S624373Y2 JP 1982082094 U JP1982082094 U JP 1982082094U JP 8209482 U JP8209482 U JP 8209482U JP S624373 Y2 JPS624373 Y2 JP S624373Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- exhaust
- blowhead
- compressed air
- large diameter
- 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
- 238000007664 blowing Methods 0.000 claims description 10
- 239000003110 molding sand Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000000071 blow moulding Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Landscapes
- Casting Devices For Molds (AREA)
Description
【考案の詳細な説明】
本考案は、シエルマシンやコールドボツクス造
型機等のいわゆる吹込造型機におけるブローヘツ
ドに関する。[Detailed Description of the Invention] The present invention relates to a blow head in a so-called blow molding machine such as a shell machine or a cold box molding machine.
現在一般に用いられているブローヘツドは、第
１図及び第２図に示す如く、上部の円筒体１と下
部の箱体２とから成り、該円筒体１の側壁には、
導管３及び吸排気切換弁４を介して圧縮空気タン
ク５と連通する開口６が穿設されていると共に、
該円筒体１の内部には多数の垂直スリツトをを具
えたスリツト筒７が、該円筒体１の内壁との間に
若干の間隙を保つて嵌挿されている。 As shown in FIGS. 1 and 2, the blowhead currently in common use consists of an upper cylinder 1 and a lower box 2, with side walls of the cylinder 1 having
An opening 6 communicating with a compressed air tank 5 via a conduit 3 and an intake/exhaust switching valve 4 is bored, and
A slit tube 7 having a large number of vertical slits is fitted inside the cylindrical body 1 with a slight gap maintained between it and the inner wall of the cylindrical body 1.
なお、前記スリツト筒７の上下端部と前記円筒
体１との接触部はシール材１２，１２ａ、１３，
１３ａにより気密にされている。前記円筒体１の
上端は、鋳物砂供給ホツパ８の供給口９と接続し
ていると共に、前記箱体２の底面には、図示され
ない金型の吹込口と合致する複数個のブローノズ
ル１０が設けられている。このようなブローヘツ
ドの下面に金型を密着させ、該ブローヘツド内へ
前記ホツパ８から所定量の鋳物砂１１を供給し、
供給口９を密閉したあと前記円筒体１側壁の開口
６から圧縮空気を吹き込むと、圧縮空気は該円筒
体１の内壁と前記スリツト筒７との間隙を上方か
ら下方へ流下すると共に、該スリツト筒７のスリ
ツトを通つて内部の鋳物砂１１を押圧する。これ
により鋳物砂１１は、ブローノズル１０を経て図
示されない金型のキヤビテイ部へ充填される。 Note that the contact areas between the upper and lower ends of the slit tube 7 and the cylindrical body 1 are covered with sealing materials 12, 12a, 13,
13a makes it airtight. The upper end of the cylindrical body 1 is connected to the supply port 9 of the molding sand supply hopper 8, and the bottom surface of the box body 2 is provided with a plurality of blow nozzles 10 that match the blowing ports of the mold (not shown). It is provided. A mold is brought into close contact with the lower surface of such a blow head, and a predetermined amount of molding sand 11 is supplied from the hopper 8 into the blow head,
When compressed air is blown into the opening 6 in the side wall of the cylindrical body 1 after the supply port 9 is sealed, the compressed air flows downward through the gap between the inner wall of the cylindrical body 1 and the slit tube 7, and also flows through the slit. The molding sand 11 inside is pressed through the slit of the cylinder 7. As a result, the molding sand 11 passes through the blow nozzle 10 and is filled into the cavity portion of the mold (not shown).
ところで、上記のようにしてブローヘツド内へ
吹込まれた圧縮空気は、一部は鋳物砂１１と共に
金型内へ流入し、該金型に設けられた排気口から
大気中へ放出されるが、残りの大部分はブローヘ
ツド内に残留する。前記残留圧縮空気は、ブロー
ヘツドから金型を分離する時、ブローヘツド内に
残溜している鋳物砂１１をブローノズル１０から
噴出させるから、金型を分離する前にブローヘツ
ド内から排出しておかなければならない。従来、
前記残溜圧縮空気は、吹込み時と同じブローヘツ
ド側壁の開口６から導管３及び吸排気切替弁４を
経て大気中へ放出されていた。 By the way, a part of the compressed air blown into the blowhead as described above flows into the mold together with the molding sand 11 and is released into the atmosphere from the exhaust port provided in the mold, but the rest is Most of it remains in the blowhead. When the mold is separated from the blow head, the residual compressed air causes the molding sand 11 remaining in the blow head to be ejected from the blow nozzle 10, so it must be discharged from the blow head before separating the mold. Must be. Conventionally,
The residual compressed air was discharged into the atmosphere through the conduit 3 and the intake/exhaust switching valve 4 from the same opening 6 in the side wall of the blowhead as when blowing.
しかし、この方式では、排気と共にブローヘツ
ド内の鋳物砂１１もスリツト筒７の内壁面へ吸い
寄せられ、スリツトに目詰まりを起させるから、
以後の圧縮空気の吹込み性能が悪くなり、不良鋳
型が発生する原因となる。このため作業者は毎日
のようにスリツト筒７を掃除しなければならなか
つた。 However, in this method, the molding sand 11 in the blow head is also attracted to the inner wall surface of the slit tube 7 along with the exhaust air, causing clogging of the slit.
Subsequent blowing performance of compressed air will deteriorate, causing defective molds to be produced. For this reason, the operator had to clean the slit tube 7 almost every day.
本考案は上記のような事情に鑑みてなされたも
ので、スリツト筒に目詰りを起させることなくブ
ローヘツド内の残溜圧縮空気を大気中へ排出でき
るブローヘツドを提供するものである。 The present invention was developed in view of the above-mentioned circumstances, and it is an object of the present invention to provide a blowhead that can discharge residual compressed air within the blowhead into the atmosphere without clogging the slit tube.
以下、本考案を実施例に基づき詳細に説明する
と、第３図は本考案に係るブローヘツドの要部断
面を示し、該ブローヘツドは下面にブローノズル
２０を備えた箱体２２と、該箱体２２の上面中央
部と連通接続する段付円筒体２１とから成つてい
る。前記段付円筒体２１は更に、上段の細径部と
下段の太径部とから成り、該細径部の側壁には排
気口２３が設けられていて、該排気口２３は導管
２４を介して排気専用カツトバルブ２５と連通し
ている（第４図）。なお前記排気口２３と導管２
４との接続部にはフイルタ２６が填装されてい
る。前記段付円筒体２１の太径部の構成は、従来
装置と同様、内部にスリツト筒２７が設けられて
いると共に、側壁には導管３３と接続する吹込口
２８が穿設されている。但し前記導管３３の他端
は吹込み専用カツトバルブ２９と接続している。
ブローヘツド下部の箱体２２の上面には排気口３
０，３０ａが設けられていて、該排気口３０，３
０ａは導管３１，３１ａを介して前記排気専用カ
ツトバルブ２５と連通している。前記排気口３
０，３０ａと導管３１，３１ａとの接続部にもフ
イルタ３２，３２ａが填装されている。更に、前
記バルブ２５は、途中に排気絞り弁３４を取り付
けた排気管３５と接続している。上記のように構
成されたブローヘツドにおいて、予め排気絞り弁
３４を適宜調節した後、該ブローヘツドの下面に
図示されない金型の上面を密着させた後、吹込み
専用カツトバルブ２９を開いて該金型のキヤビテ
イ部へ従来と同じ方法で鋳物砂を充填する。所定
時間経過後、吹込み専用カツトバルブ２９を閉じ
ると共に排気専用カツトバルブ２５を開くと、ブ
ローヘツド内に残溜している圧縮空気は排気口２
３，３０，３０ａから導管２４，３１，３１ａ、
バルブ２５及び排気管３５を経て大気中へ放出さ
れる。なお排気の際、ブローヘツド内に残溜して
いる鋳物砂は排気口２３，３０，３０ａに取り付
けられたフイルタ２６，３２，３２ａにより捕捉
され、外部へ出ることはない。 Hereinafter, the present invention will be explained in detail based on an embodiment. Fig. 3 shows a cross section of a main part of a blow head according to the present invention, and the blow head includes a box body 22 equipped with a blow nozzle 20 on the lower surface, and a box body 22 provided with a blow nozzle 20 on the lower surface. It consists of a stepped cylindrical body 21 that communicates with the central part of the upper surface of the cylinder. The stepped cylindrical body 21 further comprises an upper narrow diameter portion and a lower thick diameter portion, and an exhaust port 23 is provided in the side wall of the narrow diameter portion, and the exhaust port 23 is connected to the exhaust port 23 through a conduit 24. It communicates with a cut valve 25 exclusively for exhaust (Fig. 4). Note that the exhaust port 23 and the conduit 2
A filter 26 is loaded in the connection portion with 4. The configuration of the large diameter portion of the stepped cylindrical body 21 is similar to that of the conventional device, in which a slit tube 27 is provided inside, and an air inlet 28 connected to a conduit 33 is bored in the side wall. However, the other end of the conduit 33 is connected to a cut valve 29 exclusively for blowing.
The exhaust port 3 is located on the top surface of the box body 22 at the bottom of the blowhead.
0,30a are provided, and the exhaust ports 30,3
0a communicates with the exhaust exclusive cut valve 25 via conduits 31 and 31a. The exhaust port 3
Filters 32, 32a are also installed at the connection portions between 0, 30a and conduits 31, 31a. Further, the valve 25 is connected to an exhaust pipe 35 having an exhaust throttle valve 34 attached therebetween. In the blowhead configured as described above, after adjusting the exhaust throttle valve 34 appropriately in advance and bringing the upper surface of the mold (not shown) into close contact with the lower surface of the blowhead, the blow-only cut valve 29 is opened to open the cut valve 29 of the mold. Fill the cavity with molding sand using the same method as before. After a predetermined period of time has elapsed, when the cut valve 29 for blowing is closed and the cut valve 25 for exhaust is opened, the compressed air remaining in the blow head is discharged from the exhaust port 2.
3, 30, 30a to conduits 24, 31, 31a,
It is released into the atmosphere through the valve 25 and exhaust pipe 35. During exhaust, the foundry sand remaining in the blow head is captured by the filters 26, 32, 32a attached to the exhaust ports 23, 30, 30a, and does not escape to the outside.
以上の説明から明らかなように、本考案はブロ
ーヘツドに排気口を吹込口とは別個に設け、ブロ
ーヘツド内の残溜圧縮空気を該排気口を通して排
出せんとするものである。従つて排気の際、ブロ
ーヘツド内の鋳物砂がスリツト筒の内壁面に吸い
寄せられてスリツトを詰まらせることがなくなる
から、以後の圧縮空気の吹込みが阻害されること
がなくなる。すなわち吹込み性能が安定し、良好
な造型が保証される。またスリツト筒の清掃も不
要になる。 As is clear from the above description, the present invention is to provide an exhaust port in the blowhead separately from the blowing port, and to discharge residual compressed air in the blowhead through the exhaust port. Therefore, during evacuation, the molding sand in the blowhead will not be attracted to the inner wall surface of the slit tube and clog the slit, so that subsequent blowing of compressed air will not be hindered. In other words, the blowing performance is stable and good molding is guaranteed. Also, cleaning of the slit tube becomes unnecessary.
以上のような優れた特徴を有する本考案が業界
の発展に寄与する所は大である。 The present invention, which has the above-mentioned excellent features, will greatly contribute to the development of the industry.
第１図は従来のブローヘツドの要部断面図、第
２図は同配管系統図、第３図は本考案に係るブロ
ーヘツドの要部断面図、第４図は同配管系統図で
ある。
２１……段付円筒体、２２……箱体、２３，３
０，３０ａ……排気口、２８……吸込口、２５…
…排気専用カツトバルブ、２９……吹込専用カツ
トバルブ、２６，３２，３２ａ……フイルタ、２
７……スリツト筒。
FIG. 1 is a sectional view of the main part of a conventional blowhead, FIG. 2 is a piping system diagram thereof, FIG. 3 is a sectional view of the main part of the blowhead according to the present invention, and FIG. 4 is a diagram of the piping system. 21...Stepped cylindrical body, 22...Box body, 23,3
0,30a...Exhaust port, 28...Suction port, 25...
...Cut valve only for exhaust, 29...Cut valve only for blowing, 26, 32, 32a...Filter, 2
7...Slit tube.
Claims (1)
面中央部に、太径部と細径部とから成る段付円筒
体２１の太径部を連通接続し、該段付円筒体２１
の太径部内にスリツト筒２７を嵌挿し、該円筒体
２１の太径部側壁には導管３３及び吹込み専用カ
ツトバルブ２９を介して圧縮空気タンク５に連通
する吹込口２８を設け、前記円筒体２１の細径部
側壁及び前記箱体２２の上面には、導管２４，３
１，３１ａ及び排気専用カツトバルブ２５を介し
て大気に通じる排気口２３，３０，３０ａを設け
たことを特徴とする吹込造型機のブローヘツド。 A large diameter part of a stepped cylindrical body 21 consisting of a large diameter part and a small diameter part is connected to the center part of the upper surface of a box body 22 equipped with a blow nozzle 20 on the lower surface, and the stepped cylindrical body 21
A slit tube 27 is fitted into the large diameter portion of the cylindrical body 21, and an inlet 28 is provided on the side wall of the large diameter portion of the cylindrical body 21 to communicate with the compressed air tank 5 via a conduit 33 and a cut valve 29 exclusively for blowing. 21 and the upper surface of the box body 22 are provided with conduits 24, 3.
1, 31a and exhaust ports 23, 30, 30a communicating with the atmosphere through an exhaust-only cut valve 25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8209482U JPS58185346U (en) | 1982-06-01 | 1982-06-01 | Blow head of blow molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8209482U JPS58185346U (en) | 1982-06-01 | 1982-06-01 | Blow head of blow molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58185346U JPS58185346U (en) | 1983-12-09 |
| JPS624373Y2 true JPS624373Y2 (en) | 1987-01-31 |
Family
ID=30091172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8209482U Granted JPS58185346U (en) | 1982-06-01 | 1982-06-01 | Blow head of blow molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58185346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07256394A (en) * | 1994-03-18 | 1995-10-09 | Sintokogio Ltd | Sand blowing device of equipment for blowing molding |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51123724A (en) * | 1975-04-23 | 1976-10-28 | Sintokogio Ltd | Box for forming mold |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51157526U (en) * | 1975-06-09 | 1976-12-15 |
-
1982
- 1982-06-01 JP JP8209482U patent/JPS58185346U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51123724A (en) * | 1975-04-23 | 1976-10-28 | Sintokogio Ltd | Box for forming mold |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07256394A (en) * | 1994-03-18 | 1995-10-09 | Sintokogio Ltd | Sand blowing device of equipment for blowing molding |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58185346U (en) | 1983-12-09 |
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