JPS58119839A - Method of separating product at injection molding of ceramic resin - Google Patents
Method of separating product at injection molding of ceramic resinInfo
- Publication number
- JPS58119839A JPS58119839A JP248882A JP248882A JPS58119839A JP S58119839 A JPS58119839 A JP S58119839A JP 248882 A JP248882 A JP 248882A JP 248882 A JP248882 A JP 248882A JP S58119839 A JPS58119839 A JP S58119839A
- Authority
- JP
- Japan
- Prior art keywords
- ceramic resin
- mold
- product
- cutting
- runner
- 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.)
- Granted
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
- B29C45/38—Cutting-off equipment for sprues or ingates
Abstract
Description
【発明の詳細な説明】
本発明はセラミックス樹脂射出成形時における製品分離
方法であって、金型内で製品とランナーとを分離するこ
とによって従来のごとき脱型後の分離工程を省略ル、か
つ製品の欠は等による製品歩留の低下を防止することを
目的とするものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is a product separation method during ceramic resin injection molding, which eliminates the conventional separation process after demolding by separating the product and runner within the mold. The purpose is to prevent a decline in product yield due to product shortages, etc.
セラミックス樹脂はセラミックス粉末と合成樹脂との混
線物であって、かがるセラミックス樹脂は特性−上固く
、かつ脆いものである。Ceramic resin is a mixture of ceramic powder and synthetic resin, and ceramic resin is hard and brittle in terms of characteristics.
このようなセラミックス樹脂は通常射出成形法で成形し
、冷却固化後金型から取り出し、製品部とランナーを刃
物等で切断して製品を分離しているが、一般に該切断工
程で製品部が欠けるため、製品歩留を低下するという欠
点がある。Such ceramic resins are usually molded by injection molding, and after cooling and solidifying, they are removed from the mold and separated by cutting the product part and runner with a knife, etc., but the product part is generally chipped during this cutting process. Therefore, there is a drawback that the product yield is reduced.
そのため、セラミックス樹脂を金型内に射出成形し、冷
却固化が完全に進行する以前の軟化状態で脱型して切断
する方法も試みられているが、この場合、所定値よりも
圧力、加圧時間が短縮されるため、製品に所定の圧力が
かからず、また切断時の応力が製品に加わるため、製品
部に不均一な力がかかり製品の変形、製品の内部微亀裂
等を生ずるおそれがあるほか、切断タイミングの選定が
困難であって、タイミングを誤ると製品部に欠陥等を生
ずる欠点がある。For this reason, attempts have been made to inject ceramic resin into a mold, remove it from the mold and cut it in a softened state before it has completely cooled and solidified. Because the time is shortened, the specified pressure is not applied to the product, and stress is applied to the product during cutting, so uneven force is applied to the product part, which may cause deformation of the product or internal micro-cracks in the product. In addition, it is difficult to select the cutting timing, and if the timing is incorrect, defects may occur in the product.
本発明は、特許請求の範囲に記載した構成のごとく、型
閉め状態下でランナーと製品との接続部分の粘度を検知
し、セラミックス樹脂の冷却固化の進行する以前に製品
とランナーとを分離することにより従来のごとき製品の
変形、微亀裂等の発生のない製品を製造するセラミック
ス樹脂射出成形時における製品分離方法を得たものであ
る。As described in the claims, the present invention detects the viscosity of the connecting portion between the runner and the product under a closed mold state, and separates the product from the runner before the ceramic resin is cooled and solidified. As a result, a method for separating products during ceramic resin injection molding, which produces products without deformation, microcracks, etc., as in conventional products, has been obtained.
図面は本発明の実施に使用される装置の一例を示したも
のであるが、次に図示例によって本発明を説明する。The drawings show an example of an apparatus used to carry out the invention, and the invention will now be described with reference to the illustrated example.
図面は金型１を型閉めした状態を示したものであって、
固定金型２と可動金型３とが密接されている。まず本発
明を実施するための金型１の構造を説明すれば、可動金
型３のスゾール４に通ずるランナー５とキャビティ６と
の接続部分に、前記ランナー５を遮断できる巾を有する
切断プレート７が取付けられており、他方該切断プレー
ト７に対向する固定金型２の部分に前記切断プレート７
と同一厚、かつ同−巾のコア８が取付けられている。The drawing shows the mold 1 in a closed state,
The fixed mold 2 and the movable mold 3 are in close contact with each other. First, the structure of the mold 1 for carrying out the present invention will be described. A cutting plate 7 having a width that can cut off the runner 5 is placed at the connection portion between the runner 5 that leads to the susol 4 of the movable mold 3 and the cavity 6. is attached, and the cutting plate 7 is attached to the part of the fixed mold 2 that faces the cutting plate 7.
A core 8 of the same thickness and width is attached.
前記切断プレート７は駆動部材９が取付けられており１
該駆動部材９によって可動金型３内を摺動して固定金型
２方向へ進出しまたは後退できるようになっており、ま
たコア８は駆動部材１０が取付けられており、該駆動部
材１０によって、前記切断ル！ドアの進行または後退に
応じて固定金型２内を後退しまたは進出するようになっ
ている。The cutting plate 7 has a driving member 9 attached thereto.
The driving member 9 allows the core 8 to slide within the movable mold 3 and advance or retreat in the two directions of the fixed mold, and a driving member 10 is attached to the core 8. , Said cutting le! The door moves backward or forward within the fixed mold 2 in accordance with the advance or retreat of the door.
前記切断プレート７の先端部には、切断部分Ｐにおける
セラミックス樹脂の粘度を検知できるセンサー１１が組
付けられている。なお、該センサー１１は軟化点または
圧力等を検知できるものであってもよく、かかる軟化点
または圧力から間接的に粘度を検知するものであっても
よい。A sensor 11 that can detect the viscosity of the ceramic resin at the cut portion P is attached to the tip of the cutting plate 7. The sensor 11 may be capable of detecting the softening point or pressure, or may be capable of indirectly detecting the viscosity from the softening point or pressure.
該センサー１１は粘度を検知し、その出力信号１２が制
御回路１３に入力され、該制御回路１３は前記センサー
１１の信号によって信号１４および１５を出力し、前記
駆動部材９および１０をそれぞれ作動するようになって
いる。なお、図中符号１６はエジェクタービン、１７は
エジェクタープレート、１８はパンチ、１９はゼットピ
ン、２０は射出成形機である。The sensor 11 detects viscosity, and its output signal 12 is input to a control circuit 13, which outputs signals 14 and 15 according to the signal from the sensor 11, and operates the drive members 9 and 10, respectively. It looks like this. In the figure, reference numeral 16 is an ejector turbine, 17 is an ejector plate, 18 is a punch, 19 is a jet pin, and 20 is an injection molding machine.
次に本発明を説明すれば、射出成形機２０よりセラミッ
クス樹脂を金型１内に注入した後、金型１が型閉めされ
ている状態でセラミックス樹脂の冷却固化が進行する以
前の軟化状態、特に切断部分Ｐの状態をセンサー１１で
検知し、該センサー１１の検知信号１２を制御回路に入
力する。制御回路１３は予め切断に適した粘度が設定さ
れており、前記検知信号１２がこれと一致したとき、信
号１４および１５を出力して駆動部材９および１０を作
動する。Next, to explain the present invention, after the ceramic resin is injected into the mold 1 from the injection molding machine 20, the softened state before the ceramic resin is cooled and solidified while the mold 1 is closed; In particular, the state of the cut portion P is detected by a sensor 11, and a detection signal 12 from the sensor 11 is input to the control circuit. The control circuit 13 has a viscosity suitable for cutting set in advance, and when the detection signal 12 matches this, it outputs signals 14 and 15 to operate the drive members 9 and 10.
切断シレードアは駆動部材９の作動によって進出し、ラ
ンナー５内のセラミックス樹脂が軟化状態にあるため、
該セラミックス樹脂内に突出すると同時に、コア８が駆
動部材１０の作動によって固定金型２内を後退するため
、前記切断プレート７に押圧されたセラミックス樹脂は
コア８が後退することによって形成された間隙内に押し
出されてランナー５とキャビティ６内とのセラミックス
樹脂は切断グレート７部分において完全に排除されて遮
断される。The cutting sill door advances by the actuation of the drive member 9, and since the ceramic resin in the runner 5 is in a softened state,
At the same time as the core 8 protrudes into the ceramic resin, the core 8 retreats within the fixed mold 2 by the operation of the driving member 10, so that the ceramic resin pressed against the cutting plate 7 fills the gap formed by the retreat of the core 8. The ceramic resin that is extruded inside the runner 5 and the cavity 6 is completely removed and blocked at the cutting grating 7 portion.
・ 従って、冷却固化後金型１を型開きし、同時にエジ
ェクターぎン１６を突出せば、スツール４およびランナ
ー５に残留しているセラミックス樹脂分Ｍ′はゼットピ
ン１９によって可動金型３から脱型され、また製品Ｍは
パンチ１８によって別個に押出され、製品Ｍとセラミッ
クス樹脂分Ｍ′が切離された状態で取出される。- Therefore, if the mold 1 is opened after cooling and solidification and the ejector pin 16 is ejected at the same time, the ceramic resin M' remaining on the stool 4 and the runner 5 can be removed from the movable mold 3 by the jet pin 19. Further, the product M is extruded separately by the punch 18, and the product M and the ceramic resin portion M' are taken out in a separated state.
なお、図示例では切断プレート７は可動金型３に取付け
られているが、切断プレート７を固定金型２に取付けて
もよく、またコア８は図示例のごとく切断プレート７の
延長線上を摺動することなく直角方向へ摺動するもので
あってもよい。また、必要によってはコア８を取付けな
いものであってもよい。In the illustrated example, the cutting plate 7 is attached to the movable mold 3, but the cutting plate 7 may be attached to the fixed die 2, and the core 8 can slide on the extension line of the cutting plate 7 as in the illustrated example. It may be one that slides in the right angle direction without moving. Further, if necessary, the core 8 may not be attached.
また検知センサー１１は図示例では切断プレー）７先端
部に組み込まれているが、切断部分Ｐのセラミックス樹
脂の粘度が検知できるものであれば図示例に必ずしも限
定されず、また駆動部材９および１０はスプリング機構
、油圧。In addition, the detection sensor 11 is incorporated in the tip of the cutting plate 7 in the illustrated example, but is not necessarily limited to the illustrated example as long as it can detect the viscosity of the ceramic resin of the cut portion P. is a spring mechanism, hydraulic.
電動の如何なるものであってもよい。It may be of any electric type.
本発明は以上のごとく、セラミックス樹脂が冷却固化す
る以前の軟化状態において、金型１を型閉めした状態で
製品部Ｍをスツール４およプランナー５部分に残留して
いるセラミックス樹脂分Ｍ′と分離するため、製品部Ｍ
に切断に要する応力に伴なう不要な力が加わるおそれ力
τなく、従って製品の変形または内部亀裂等＆家皆無で
ある。As described above, in the present invention, in the softened state before the ceramic resin is cooled and solidified, the product part M is divided into the ceramic resin fraction M' remaining in the stool 4 and planner 5 parts with the mold 1 closed. To separate, product department M
There is no risk of unnecessary force being applied due to the stress required for cutting, and therefore there is no deformation or internal cracking of the product.
また製品脱型後別個に切断する手段を必要としないから
、作業能率は大巾に向上し、し力１も切断時に製品に生
ずる欠陥等は皆無であって製品歩留は大巾に向上する。In addition, since there is no need for a separate means for cutting the product after demolding, the work efficiency is greatly improved, and there are no defects that occur in the product during cutting due to cutting force, and the product yield is greatly improved. .
図面は本発明を実施する金型の断面説明図である０
１：金型、２：固定金型、３：可動金型、４ニスゾール
、５：ランナー、６：キヤピテイ７：切断プレー［，８
：コア、９，１０：駆動部材、１１：検知センサー、１
３：制御回路、１６：エジェクタービン、１７：エジェ
クタープレート、１８：パンチ、１９：ゼットピン、２
０：射出成形機Ｏ
特許出願人
トヨタ自動車工業株式会社
代 理 人
市 川 理 吉
遠 藤 達 也The drawing is a cross-sectional explanatory diagram of a mold for carrying out the present invention.
: Core, 9, 10: Drive member, 11: Detection sensor, 1
3: Control circuit, 16: Ejector turbine, 17: Ejector plate, 18: Punch, 19: Z pin, 2
0: Injection molding machine O Patent applicant Toyota Motor Corporation Agent Osamu Kawa Yoshito Tatsuya Fuji
Claims (1)
金型内のランナーと製品との接続部分のセラミックス樹
脂の粘度を検知し、この検知信号に基づき、該接続部分
のセラミックス樹脂が軟化状態にある間に、金型内に取
付けられた切断！レートを作動させて前記ランナーと製
−品との接続部分を遮断することを特徴とするセラミッ
クス樹脂射出成形時における製品分離方法。After ceramic resin injection molding, with the mold closed, the viscosity of the ceramic resin at the connection part between the runner in the mold and the product is detected, and based on this detection signal, the ceramic resin at the connection part softens. While there, the cutting was installed inside the mold! A product separation method during ceramic resin injection molding, characterized in that a connection portion between the runner and the product is cut off by operating a rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP248882A JPS58119839A (en) | 1982-01-11 | 1982-01-11 | Method of separating product at injection molding of ceramic resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP248882A JPS58119839A (en) | 1982-01-11 | 1982-01-11 | Method of separating product at injection molding of ceramic resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58119839A true JPS58119839A (en) | 1983-07-16 |
| JPH0227135B2 JPH0227135B2 (en) | 1990-06-14 |
Family
ID=11530740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP248882A Granted JPS58119839A (en) | 1982-01-11 | 1982-01-11 | Method of separating product at injection molding of ceramic resin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58119839A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06278169A (en) * | 1993-02-25 | 1994-10-04 | Sawafuji Sekkei:Kk | Injection mold and manufacture of injection molded piece |
| JP2006321158A (en) * | 2005-05-20 | 2006-11-30 | Calsonic Kansei Corp | Mold device and molding method |
| CN105599231A (en) * | 2016-01-25 | 2016-05-25 | 中山市利群精密实业有限公司 | Mould capable of controlling quantity of residues at plastic feed sprue |
| CN108819139A (en) * | 2018-05-30 | 2018-11-16 | 潘勇 | Automotive bumper mold mould inscribe cast gate control system |
| EP3950262A1 (en) * | 2020-08-04 | 2022-02-09 | Chung Yuan Christian University | Injection molding apparatus and injection molding method |
-
1982
- 1982-01-11 JP JP248882A patent/JPS58119839A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06278169A (en) * | 1993-02-25 | 1994-10-04 | Sawafuji Sekkei:Kk | Injection mold and manufacture of injection molded piece |
| JP2006321158A (en) * | 2005-05-20 | 2006-11-30 | Calsonic Kansei Corp | Mold device and molding method |
| CN105599231A (en) * | 2016-01-25 | 2016-05-25 | 中山市利群精密实业有限公司 | Mould capable of controlling quantity of residues at plastic feed sprue |
| CN105599231B (en) * | 2016-01-25 | 2018-03-09 | 中山市利群精密实业有限公司 | It is a kind of to control the mould into glue cast gate residual quantity |
| CN108819139A (en) * | 2018-05-30 | 2018-11-16 | 潘勇 | Automotive bumper mold mould inscribe cast gate control system |
| EP3950262A1 (en) * | 2020-08-04 | 2022-02-09 | Chung Yuan Christian University | Injection molding apparatus and injection molding method |
| US11654603B2 (en) | 2020-08-04 | 2023-05-23 | Chung Yuan Christian University | Injection molding apparatus and injection molding method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0227135B2 (en) | 1990-06-14 |
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