JP3205696B2 - Pin-shaped water-cooled core breakage detection device for cast holes - Google Patents
Pin-shaped water-cooled core breakage detection device for cast holesInfo
- Publication number
- JP3205696B2 JP3205696B2 JP28297095A JP28297095A JP3205696B2 JP 3205696 B2 JP3205696 B2 JP 3205696B2 JP 28297095 A JP28297095 A JP 28297095A JP 28297095 A JP28297095 A JP 28297095A JP 3205696 B2 JP3205696 B2 JP 3205696B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- pin
- hole
- water
- core
- 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 - Fee Related
Links
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/84—Safety devices
-
- 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
- B29C33/76—Cores
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
- B29C45/768—Detecting defective moulding conditions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Measuring Fluid Pressure (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明はダイカスト機等に適
用される，鋳抜き孔用ピン状水冷中子の折れ検出装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pin-shaped water-cooled core break detecting device for a casting hole, which is applied to a die casting machine or the like.
【０００２】[0002]
【従来の技術】従来，ピン状水冷中子の折れの有無は，
鋳造後作業者が鋳物の鋳抜き孔を目視検査することによ
って調べられている。2. Description of the Related Art Conventionally, whether or not a pin-shaped water-cooled core has broken
It has been investigated by an operator after casting by visually inspecting a blank hole of a casting.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら，作業者
による目視検査ではピン状水冷中子の折れを時として見
落すことがあり，信頼性に欠ける，という問題がある。However, a visual inspection by an operator sometimes overlooks the breakage of the pin-shaped water-cooled core, which is unreliable.
【０００４】[0004]
【課題を解決するための手段】本発明は，比較的簡単な
手段を採用することによって鋳抜き孔用ピン状水冷中子
の折れを自動的に，且つ確実に検出することのできる前
記装置を提供することを目的する。SUMMARY OF THE INVENTION The present invention provides an apparatus which can automatically and reliably detect the breakage of a pin-shaped water-cooled core for a cast hole by employing relatively simple means. The purpose is to provide.
【０００５】前記目的を達成するため本発明によれば，
冷却水孔を有し，且つ鋳型に取付けられる鋳抜き孔用ピ
ン状水冷中子と，前記ピン状水冷中子に接続されて前記
冷却水孔に連通する冷却水供給管および冷却水排出管
と，前記冷却水排出管に連通する検圧室に配設されると
共にその検圧室内の冷却水圧が，前記ピン状水冷中子の
折れに起因して減少すると正常位置から異常位置へ移動
する感圧子と，前記感圧子の移動を検出する検出素子と
を備え，前記冷却水孔が，前記ピン状水冷中子の基部よ
り，同中子の，キャビティ内に突出する孔成形部の先端
近傍まで延びている，鋳抜き孔用ピン状水冷中子の折れ
検出装置が提供される。[0005] To achieve the above object, according to the present invention,
A pin-shaped water-cooling core for a cast-out hole having a cooling water hole and attached to a mold; a cooling water supply pipe and a cooling water discharge pipe connected to the pin-shaped water cooling core and communicating with the cooling water hole; The cooling water discharge pipe is disposed in a test chamber communicating with the cooling water discharge pipe, and when the cooling water pressure in the test chamber decreases due to the breakage of the pin-shaped water-cooled core, a sense of moving from a normal position to an abnormal position. An indenter, and a detecting element for detecting the movement of the indenter , wherein the cooling water hole is located between a base of the pin-shaped water-cooled core.
The tip of the hole forming part of the core protruding into the cavity
Provided is a pin-shaped water-cooled core breakage detecting device for a casting hole extending to the vicinity .
【０００６】前記構成において，ピン状水冷中子の，キ
ャビティ内に突出する孔成形部が溶湯流によって折られ
ると，冷却水排出管内を冷却水が流れなくなるので，検
圧室内の冷却水圧が減少する（この減少にはゼロも含ま
れる）。これにより感圧子が正常位置から異常位置へ移
動し，その移動が検出素子により検出される。そこで，
この検出素子からの検出信号により，例えばダイカスト
機の全自動サイクルを停止させるか，または射出機構の
作動を停止させる。In the above configuration, the key of the pin-shaped water-cooled core is
If the hole forming portion protruding into the cavity is broken by the molten metal flow, the cooling water does not flow through the cooling water discharge pipe, so that the cooling water pressure in the test chamber decreases (this reduction includes zero). As a result, the pressure sensitive element moves from the normal position to the abnormal position, and the movement is detected by the detecting element. Therefore,
According to the detection signal from the detection element, for example, the fully automatic cycle of the die casting machine is stopped or the operation of the injection mechanism is stopped.
【０００７】[0007]
【発明の実施の形態】図１において，ダイカスト機の金
型（鋳型）１は鋳物成形用キャビティ２を有し，そのキ
ャビティ２を形成する壁部３に，それを貫通するように
複数の鋳抜き孔用ピン状水冷中子４が取付けられる。各
ピン状水冷中子４の基部５は壁部３に支持され，また孔
成形部６はキャビティ２内に突出している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, a die (mold) 1 of a die casting machine has a cavity 2 for molding a casting, and a plurality of castings are formed in a wall 3 forming the cavity 2 so as to penetrate the wall. A pin-shaped water-cooled core 4 for a through hole is mounted. The base 5 of each pin-shaped water-cooled core 4 is supported by the wall 3, and the hole forming portion 6 protrudes into the cavity 2.
【０００８】冷却水供給源に連なる給水側集合器７に複
数の冷却水供給管８の各入口側が接続され，それら冷却
水供給管８の各出口側は各ピン状水冷中子４に接続され
る。また排水側集合器９に複数の冷却水排出管１０の各
出口側が接続され，それら冷却水排出管１０の各入口側
は各ピン状水冷中子４に接続される。Each inlet side of a plurality of cooling water supply pipes 8 is connected to a water supply side collector 7 connected to a cooling water supply source, and each outlet side of the cooling water supply pipes 8 is connected to each pin-shaped water cooling core 4. You. Further, each outlet side of the plurality of cooling water discharge pipes 10 is connected to the drain side collector 9, and each inlet side of the cooling water discharge pipes 10 is connected to each pin-shaped water cooling core 4.
【０００９】図２において，ピン状水冷中子４はその基
部５より孔成形部６の先端近傍まで延びる冷却水孔１１
を有する。冷却水孔１１の入口に嵌着されたプラグ１２
に冷却水供給管８の出口側管部１３が支持され，その出
口側管部１３の開口端は冷却水孔１１の底面近傍に位置
する。これにより冷却水供給管８が冷却水孔１１に連通
する。またプラグ１２に冷却水排出管１０の入口側管部
１４が支持され，その開口端はプラグ１２内端面に在
り，これにより冷却水排出管１０が冷却水孔１１に連通
する。In FIG. 2, a pin-shaped water cooling core 4 has a cooling water hole 11 extending from its base 5 to the vicinity of the tip of the hole forming portion 6.
Having. Plug 12 fitted at inlet of cooling water hole 11
An outlet-side pipe portion 13 of the cooling water supply pipe 8 is supported, and the opening end of the outlet-side pipe portion 13 is located near the bottom surface of the cooling water hole 11. Thereby, the cooling water supply pipe 8 communicates with the cooling water hole 11. The plug 12 supports an inlet-side pipe portion 14 of the cooling water discharge pipe 10, and has an open end on the inner end face of the plug 12, whereby the cooling water discharge pipe 10 communicates with the cooling water hole 11.
【００１０】図１，２に示す排水側集合器９において，
直方体形をなす下部接続ブロック１５は，その長手方向
に沿って配設された複数の通水孔１６を有し，それら通
水孔１６は下部接続ブロック１５を上下に貫通し，且つ
互に独立している。各通水孔１６の下部開口に各冷却水
排出管１０の出口側が接続される。また各通水孔１６の
上部開口に合成樹脂製通水管１７の下端部がＯリング２
２を介して嵌合され，これにより各通水管１７が下部接
続ブロック１５に立設される。In the drain-side collector 9 shown in FIGS.
The lower connection block 15 having a rectangular parallelepiped shape has a plurality of water passage holes 16 arranged along the longitudinal direction thereof, and the water passage holes 16 penetrate the lower connection block 15 vertically and are independent of each other. are doing. The outlet side of each cooling water discharge pipe 10 is connected to the lower opening of each water passage hole 16. The lower end of the synthetic resin water pipe 17 is connected to the O-ring 2 at the upper opening of each water hole 16.
2, whereby the water pipes 17 are erected on the lower connection block 15.
【００１１】直方体形をなす上部接続ブロック１９は，
その長手方向に沿って配設された互に独立する複数の鉤
形通水孔２０と，それら通水孔２０を集合すべく長手方
向に延びる１つの集合孔２１とを有し，その集合孔２１
は排水系統に接続される。各通水孔２０の下部開口に各
通水管１７の上端部がＯリング２２を介して嵌着され
る。上，下部接続ブロック１９，１５の前，後面および
左右両側面間には当て板２３が取付けられ，これら当て
板２３より囲まれる密閉空間内に各通水管１７が位置す
る。The upper connection block 19 having a rectangular parallelepiped shape is
It has a plurality of mutually independent hook-shaped water holes 20 arranged along its longitudinal direction, and one collecting hole 21 extending in the longitudinal direction to gather the water holes 20. 21
Is connected to the drainage system. The upper end of each water pipe 17 is fitted to the lower opening of each water hole 20 via an O-ring 22. Patch plates 23 are mounted between the front and rear surfaces and the left and right side surfaces of the upper and lower connection blocks 19 and 15, and each water pipe 17 is located in a closed space surrounded by these patch plates 23.
【００１２】各通水管１７内の下端は各通水孔１６を介
して各冷却水排出管１０に連通し，一方，上端は各通水
孔２０を介して集合孔２１に連通する。この場合，各通
水管１７内は検圧室２４として機能する。The lower end of each water pipe 17 communicates with each cooling water discharge pipe 10 through each water hole 16, while the upper end communicates with the collecting hole 21 through each water hole 20. In this case, the inside of each water pipe 17 functions as a pressure measuring chamber 24.
【００１３】各検圧室２４内に金属製感圧子２５が配設
される。その感圧子２５は，図３に明示するように，上
部側に在って全長に亘り等径の中空真円筒部２６と，そ
の中空真円筒部２６の下端に連設された中空テーパ筒部
２７とよりなり，したがって軸方向全長に亘って延びる
通水孔２８を有する。中空真円筒部２６の周壁上部に円
周上等間隔に複数の切欠状通水溝２９が形成されてい
る。A metal pressure sensitive element 25 is provided in each of the test chambers 24. As shown in FIG. 3, the pressure sensitive element 25 has a hollow true cylindrical portion 26 on the upper side and having the same diameter over the entire length, and a hollow tapered tubular portion connected to the lower end of the hollow true cylindrical portion 26. 27, and thus has a water passage hole 28 extending over the entire length in the axial direction. A plurality of notched water passage grooves 29 are formed in the upper portion of the peripheral wall of the hollow true cylindrical portion 26 at equal circumferential intervals.
【００１４】各感圧子２５の移動を検出する複数の検出
素子としての誘導形近接スイッチ３０が，各通水管１７
の上部側に近接するように１つの当て板２３に取付けら
れている。An inductive proximity switch 30 as a plurality of detecting elements for detecting the movement of each pressure sensitive element 25 is connected to each water pipe 17.
Is attached to one backing plate 23 so as to be close to the upper side.
【００１５】上記構成において，各ピン状水冷中子４が
折れることなく正常であれば，冷却水は，各冷却水供給
管８，各ピン状中子４の冷却水孔１１および各冷却水排
出管１０を噴流して下部接続ブロック１５の各通水孔１
６に至り，そこで感圧子２５を押上げて各通水管１７の
検圧室２４，上部接続ブロック１９の各通水孔２０およ
び集合孔２１を流れて排出される。In the above configuration, if each pin-shaped water-cooled core 4 is normal without breaking, the cooling water is supplied to each cooling water supply pipe 8, the cooling water hole 11 of each pin-shaped core 4, and each cooling water discharge. By jetting the pipe 10, each water hole 1 of the lower connection block 15
Then, the pressure-sensitive element 25 is pushed up to flow through the test chamber 24 of each water pipe 17 and each water hole 20 and the collecting hole 21 of the upper connection block 19 to be discharged.
【００１６】各感圧子２５は検圧室２４内の冷却水圧に
より押上げられて，その上端面が通水孔２０の段付面３
２に当接する正常位置Ａに保持される。各感圧子２５が
正常位置Ａに在ることは各近接スイッチ３０によって検
出され，これによりダイカスト機はその全自動サイクル
を実行し得る稼働状態に維持される。この場合，各感圧
子２５は通水孔２８と複数の通水溝２９を有するので，
冷却水は通水孔２８および感圧子２５の外周側から各通
水溝２９を通じて噴流するので，検圧室２４内で冷却水
が滞ることがない。Each pressure-sensitive element 25 is pushed up by the cooling water pressure in the measuring chamber 24, and its upper end face is formed on the stepped surface 3 of the water hole 20.
2 is held at the normal position A where it abuts. The presence of each pressure sensitive element 25 in the normal position A is detected by each proximity switch 30, whereby the die casting machine is maintained in an operation state capable of executing its fully automatic cycle. In this case, since each pressure sensitive element 25 has a water passage hole 28 and a plurality of water passage grooves 29,
The cooling water is jetted from the outer periphery of the water passage hole 28 and the pressure sensitive element 25 through each water passage groove 29, so that the cooling water does not stay in the test pressure chamber 24.
【００１７】例えば，１つのピン状水冷中子４の孔成形
部６が溶湯流によって折られると，冷却水排出管１０内
を冷却水が噴流しなくなるので検圧室２４内の冷却水圧
が減少する（この場合，検圧室２４内の冷却水が無くな
れば，冷却水圧はゼロとなる）。これにより感圧子２５
が，冷却水との比重差（または自重）により正常位置Ａ
から，その中空テーパ筒部２７が通水孔１６の狭搾部３
３に係合する異常位置Ｂへ下降し，その下降が近接スイ
ッチ３０により検出される。そこで，この近接スイッチ
３０からの検出信号により，ダイカスト機の全自動サイ
クルを停止させる。For example, when the hole forming portion 6 of one pin-shaped water-cooled core 4 is broken by the molten metal flow, the cooling water does not flow through the cooling water discharge pipe 10, so that the cooling water pressure in the test chamber 24 decreases. (In this case, if the cooling water in the test pressure chamber 24 runs out, the cooling water pressure becomes zero). Thereby, the pressure sensitive element 25
Is normal position A due to the specific gravity difference (or own weight) from the cooling water.
Therefore, the hollow tapered cylindrical portion 27 is formed in the narrowed portion 3 of the water passage hole 16.
3 is lowered to the abnormal position B which engages with No. 3, and the lowering is detected by the proximity switch 30. Therefore, the fully automatic cycle of the die casting machine is stopped by the detection signal from the proximity switch 30.
【００１８】このようにしてピン状水冷中子４の折れが
自動的に検出される。In this manner, the breakage of the pin-shaped water-cooled core 4 is automatically detected.
【００１９】[0019]
【発明の効果】本発明によれば，前記のように構成する
ことによって，ピン状水冷中子の，キャビティ内に突出
する孔成形部が溶湯流によって折られると，冷却水排出
管内を冷却水が流れなくなるので，検圧室内の冷却水圧
が減少し，これにより感圧子が正常位置から異常位置へ
移動して，その移動が検出素子により検出される。従っ
てピン状水冷中子の折れを自動的に，且つ確実に検出す
ることが可能な，信頼性の高い，鋳抜き孔用ピン状水冷
中子の折れ検出装置を提供することができる。According to the present invention, the pin-shaped water-cooled core projects into the cavity by the above configuration.
Cooling water discharges when the hole forming part
Since the cooling water does not flow through the pipe, the cooling water pressure
The pressure-sensitive element moves from the normal position to the abnormal position.
It moves and the movement is detected by the detecting element. Follow
The bending of the pin-shaped water-cooled core automatically Te, and that certainly possible with this to be detected is, it is possible to provide highly reliable, breakage detection device hole for pin-like water-cooled core punching cast.
【図１】鋳抜き孔用ピン状水冷中子の折れ検出装置の概
略図である。FIG. 1 is a schematic view of a pin-shaped water-cooled core break detecting device for a casting hole.
【図２】ピン状水冷中子と排水側集合器との関係を示す
要部縦断面図である。FIG. 2 is a longitudinal sectional view of a main part showing a relationship between a pin-shaped water-cooled core and a drain-side collector.
【図３】感圧子の拡大縦断面図である。FIG. 3 is an enlarged vertical sectional view of a pressure sensitive element.
１ 金型（鋳型）２ キャビティ ４ ピン状水冷中子５ 基部 ６ 孔成形部 ８ 冷却水供給管 １０ 冷却水排出管 １１ 冷却水孔 ２４ 検圧室 ２５ 感圧子 ３０ 誘導形近接スイッチ（検出素子） Ａ 正常位置 Ｂ 異常位置DESCRIPTION OF SYMBOLS 1 Mold (mold) 2 cavity 4 Pin-shaped water-cooled core 5 base 6 hole forming part 8 Cooling water supply pipe 10 Cooling water discharge pipe 11 Cooling water hole 24 Test chamber 25 Pressure sensitive element 30 Inductive proximity switch (detection element) A Normal position B Abnormal position
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ // Ｂ２９Ｃ 33/04 Ｂ２９Ｃ 33/04 (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 17/22 B22C 9/00 B22D 17/32 G01L 7/00 B29C 33/04 ────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 identification symbol FI // B29C 33/04 B29C 33/04 (58) Investigated field (Int.Cl. 7 , DB name) B22D 17/22 B22C 9 / 00 B22D 17/32 G01L 7/00 B29C 33/04
Claims (1)
（１）に取付けられる鋳抜き孔用ピン状水冷中子（４）
と，前記ピン状水冷中子（４）に接続されて前記冷却水
孔（１１）に連通する冷却水供給管（８）および冷却水
排出管（１０）と，前記冷却水排出管（１０）に連通す
る検圧室（２４）に配設されると共にその検圧室（２
４）内の冷却水圧が，前記ピン状水冷中子（４）の折れ
に起因して減少すると正常位置（Ａ）から異常位置
（Ｂ）へ移動する感圧子（２５）と，前記感圧子（２
５）の移動を検出する検出素子（３０）とを備え， 前記冷却水孔（１１）は，前記ピン状水冷中子（４）の
基部（５）より，同中子（４）の，キャビティ（２）内
に突出する孔成形部（６）の先端近傍まで延びている こ
とを特徴とする，鋳抜き孔用ピン状水冷中子の折れ検出
装置。1. A pin-shaped water-cooled core (4) having a cooling water hole (11) and being attached to a mold (1).
A cooling water supply pipe (8) and a cooling water discharge pipe (10) connected to the pin-shaped water cooling core (4) and communicating with the cooling water hole (11); and the cooling water discharge pipe (10). Is arranged in a pressure measuring chamber (24) communicating with the pressure measuring chamber (2).
When the cooling water pressure in 4) decreases due to the breakage of the pin-shaped water-cooled core (4), the pressure-sensitive element (25) that moves from the normal position (A) to the abnormal position (B), and the pressure-sensitive element ( 2
5) Move Bei example a detecting element for detecting (30) of said cooling water hole (11), said pin-shaped water cooling core (4)
From the base (5), inside the cavity (2) of the core (4)
A pin-shaped water-cooled core breakage detecting device for a cast-out hole , which extends to the vicinity of the tip of a hole forming portion (6) protruding from the hole .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28297095A JP3205696B2 (en) | 1995-10-31 | 1995-10-31 | Pin-shaped water-cooled core breakage detection device for cast holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28297095A JP3205696B2 (en) | 1995-10-31 | 1995-10-31 | Pin-shaped water-cooled core breakage detection device for cast holes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09122873A JPH09122873A (en) | 1997-05-13 |
| JP3205696B2 true JP3205696B2 (en) | 2001-09-04 |
Family
ID=17659500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28297095A Expired - Fee Related JP3205696B2 (en) | 1995-10-31 | 1995-10-31 | Pin-shaped water-cooled core breakage detection device for cast holes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3205696B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1547749A1 (en) * | 2003-12-19 | 2005-06-29 | Behr France S.A.R.L. | Apparatus and method for detecting breakage of mould inserts |
| FR2919516A1 (en) * | 2007-07-31 | 2009-02-06 | Valois Sas | Constitutive part e.g. spray-head, molding system for fluid product dispenser, has detection units to detect parameters e.g. position, of central core and lateral pin, and activated before, during or after molding operation |
-
1995
- 1995-10-31 JP JP28297095A patent/JP3205696B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09122873A (en) | 1997-05-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |