JPS6277913A - Automatic color changing and resin changing method for injection molding machine - Google Patents
Automatic color changing and resin changing method for injection molding machineInfo
- Publication number
- JPS6277913A JPS6277913A JP21889085A JP21889085A JPS6277913A JP S6277913 A JPS6277913 A JP S6277913A JP 21889085 A JP21889085 A JP 21889085A JP 21889085 A JP21889085 A JP 21889085A JP S6277913 A JPS6277913 A JP S6277913A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- nozzle
- screw
- injection
- change
- 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
- B29C45/1753—Cleaning or purging, e.g. of the injection unit
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 〈発明の属する技術分野〉 本発明は射出成形機の色替え、樹脂替方法に関する。[Detailed description of the invention] <Technical field to which the invention pertains> The present invention relates to a method for changing the color and resin of an injection molding machine.
〈従来方法とその欠点〉
射出成形機における色替え、樹脂替え作業が大幅に増加
しているなかで前記色替えや、樹脂替の作業に要する非
生産時間の占める割合が多くなり、稼動率の低下、生産
効率の低下を招くとともに樹脂、材料のロス等の増加に
よって加工利益が圧迫されている。<Conventional methods and their drawbacks> As the work of changing colors and resins in injection molding machines has increased significantly, the non-productive time required for the above-mentioned color changes and resin changes has increased, and the operating rate has decreased. Processing profits are being squeezed due to an increase in resin and material losses, as well as a decline in production efficiency.
従来の樹脂替えや色替え方法はノズルの後退限で、今朋
使用する新しい樹脂等の計量、パージ？繰返すことによ
り行っていた。しかし、この方法は樹脂替えや色替えが
不十分で、立上り時や、生産運転中に、旧い樹脂や色が
出て来ることも多かった。The conventional method of changing resins and changing colors is to retract the nozzle and measure and purge the new resin to be used. This was done through repetition. However, this method did not allow for sufficient resin and color changes, and old resins and colors often appeared during start-up or during production operations.
樹脂替え、色替えの不良は主にスクリーパレル内、スク
リュヘッド、およびノズルの内壁に滞留したものに分ら
れる。Defects in resin change and color change are mainly classified into those that accumulate in the scraper pallet, screw head, and inner wall of the nozzle.
〈発明の目的〉
本発明は前述のような欠点を取除き、スクリーノぐレル
内、スクリュヘッドおよびノズル内壁に滞留した樹脂等
をその滞留個所に応じたパージング方法でパージングを
行い、樹脂替え、色替え時間の短縮、ならびに樹脂替え
、色替えに要する樹脂量の大巾な低減、歩留まり、生産
性の向上を可能にすることを目的とする。<Purpose of the Invention> The present invention eliminates the above-mentioned drawbacks, purges the resin accumulated in the screen nozzle, the screw head, and the inner wall of the nozzle using a purging method depending on the accumulated location, and makes it possible to change the resin, change the color, etc. The purpose is to shorten change time, significantly reduce the amount of resin required for resin change and color change, and improve yield and productivity.
〈発明の要点〉
前述の目的を達成するためスクリュを任意の回転数で連
続回転させて樹脂をノズルよ！２排出する第１動作、金
型又にこれに代るノズル口閉鎖ブロックによりノズル口
を閉鎖して任意の背圧下で計量した後、ノズル口の閉鎖
を解き、任意の速度でパージする第２の動作ノズル口を
開放したまま任意のストローク低背圧下で計量した後パ
ージする第３の動作の各動作の２動作以上組合せて行う
色替、樹脂替え動作制御方法において、各動作に必要な
射出成形機の運転条件である計量ストローク又は計量時
間、スクリュ回転数、スクリュ背圧、射出速度、射出時
間、バレル温度および各動作の継続時間又は繰返し回数
等を制御装置の記憶部に予め記憶させておき、各動作の
終了時に自動的に次の動作の運転条件に切換えることを
特徴とする射出成形機の自動色替え、樹脂替え制御方法
とした。ｔｉ、スフｌ ユ？任意の回転数で連続回転さ
せて樹脂全ノズルより排出する動作金型又はこれに代る
ノズル閉鎖ブロックによりノズル口を閉鎖して、任意の
背圧下で計量した後、ノズル口の閉鎖ｋｌ’ｌ’４き、
任意の速度でパージする動作、ノズルロ分開放した捷１
、スクリーを回転させずに後退させ、任意時間スクリュ
を回転させて計量した後、パージする動作の各動作を２
動作以上組合せて行う色替え、樹脂替え動作制御方法に
おいて、各動作に必要な射出成形機の運転条件である計
量′ストローク又は計量時間、スクリュ回転数、スクリ
ュ背圧、射出速度、射出時間、バレル温度および各動作
の継続時間又は繰返し回数等を制御装置の記憶部に予め
記憶させておき、各動作の終了時に自動的に次の動作の
運転条件に切換えることを特徴とする射出成形機の自動
色替え、樹脂替え制御方法とした。<Key Points of the Invention> To achieve the above-mentioned purpose, the screw is continuously rotated at an arbitrary rotation speed and the resin is poured into the nozzle! 2. The first operation of discharging, the nozzle opening is closed by a mold or an alternative nozzle opening closing block and metering is performed under an arbitrary back pressure, and the second operation is to unclose the nozzle opening and purge at an arbitrary speed. In the color change and resin change operation control method, which is performed by combining two or more of each operation of the third operation, where the nozzle port is open and the nozzle port is open, the injection is performed at any stroke after metering under low back pressure. The operating conditions of the molding machine, such as the metering stroke or metering time, screw rotation speed, screw back pressure, injection speed, injection time, barrel temperature, and the duration or number of repetitions of each operation, are stored in advance in the storage section of the control device. The present invention has developed an automatic color change and resin change control method for an injection molding machine, which is characterized by automatically switching to the operating conditions for the next operation at the end of each operation. ti, souffle yu? The nozzle opening is closed by a working mold that is continuously rotated at a desired rotational speed and discharged from all the resin nozzles, or an alternative nozzle closing block is used, and after metering under a desired back pressure, the nozzle opening is closed. '4,
Purge operation at any speed, nozzle opening 1
, move back the screw without rotating it, measure by rotating the screw for an arbitrary period of time, and then purge.
In the color change and resin change operation control method that combines the above operations, the operating conditions of the injection molding machine necessary for each operation are metering stroke or metering time, screw rotation speed, screw back pressure, injection speed, injection time, barrel. An automatic injection molding machine characterized in that temperature, duration of each operation, number of repetitions, etc. are stored in advance in a storage section of a control device, and at the end of each operation, the operating conditions are automatically switched to the next operation. This is a color change and resin change control method.
〈実施例〉
次に第１図により本発明の１実施例を説明すると、ｌｆ
ｌ加熱筒２に取付られた原料供給用ホッパ３は加熱筒２
の温度制御用のヒータ４は加熱筒２内に挿入され油圧シ
リンダ５により進退するとともに、油圧モータ６により
回転するスクリュである。７は電磁方向切換弁で前記ス
クリー４に対しａ位置で射出、ｂ位置で後退動作を行わ
せるものである。８は計量工程制御用の電磁切換弁で、
こｉ″Ｌが励磁されると、油圧モータ６ｖＣ油圧ポンプ
９の圧油が作用しスクリュ４金回転させ、前記ホッパｌ
からの原料樹脂を前方へ移送するとともにスクリュ４自
身は後退し、油圧ンリン〃゛５から排出される作動油は
電磁比例ＩＪ ＩＪ−フ弁１０へ送られ、設定さｆ″Ｌ
定圧力はタンク１１へ排出される。１２は電磁比例流量
調整弁で前記切換弁７がａ位置に切換えられる射出工程
でに射出速度を、切換弁８が作動する計量工程において
はスクリュ回転数全夫々制御するようになっている。１
３は電磁ＩＪ ＩＪ−フ弁で射出圧力又はスクリュ、駆
動圧力を制御するものである。１４はシーケンス動作を
制御するシーケンスで、色替、樹脂替え動作の継続時間
又は動作回数全数えるカント機能を保有する。１５はプ
ロセスコントローラで、電磁比例弁１０．１２．１３お
よびヒータ３を制御し、計量ストローク又は計量時間、
バレル温度、スクリュ回転数、スクリュ背圧、射出速度
、射出時間等の色替え、樹脂替え動作全体の動作条件を
図示してない設定装置から入力し、制御するものである
。１６にノズルタッチプレートで、空気圧又は油圧シリ
ンダ１７により色替え、樹脂替え工程時のみ加熱筒２の
先端部と金型１８のゲート１９を結ぶ延長線上を横切り
、固定プレート２０の切欠き部２１へ加熱筒２の先端が
挿入されないようにしてノズル口を閉鎖している。この
ノズルタッチプレート１６の動作は例でにシーケンサ−
１４で他の樹脂替え、色替え動作に関連して作動させれ
ば最適である。<Example> Next, one example of the present invention will be described with reference to FIG.
l The raw material supply hopper 3 attached to the heating cylinder 2 is
The temperature control heater 4 is a screw inserted into the heating cylinder 2 and moved forward and backward by a hydraulic cylinder 5, and rotated by a hydraulic motor 6. Reference numeral 7 denotes an electromagnetic directional control valve which causes the scree 4 to perform an injection operation at position a and a retraction operation at position b. 8 is an electromagnetic switching valve for controlling the weighing process;
When this i''L is excited, the pressure oil of the hydraulic motor 6vC and the hydraulic pump 9 acts to rotate the screw 4, and the hopper l
At the same time, the raw material resin is transferred forward, and the screw 4 itself is moved backward, and the hydraulic oil discharged from the hydraulic cylinder 5 is sent to the electromagnetic proportional IJ valve 10, and the setting f''L is
Constant pressure is discharged into tank 11. Reference numeral 12 denotes an electromagnetic proportional flow rate adjustment valve which controls the injection speed during the injection process when the switching valve 7 is switched to position a, and controls the entire screw rotation speed during the metering process when the switching valve 8 operates. 1
3 is an electromagnetic IJ valve that controls injection pressure or screw and drive pressure. Reference numeral 14 denotes a sequence for controlling sequence operations, and has a cant function for counting the duration or number of operations of color change and resin change operations. 15 is a process controller that controls the electromagnetic proportional valve 10.12.13 and the heater 3, and controls the metering stroke or metering time;
The operating conditions for the entire color change and resin change operation, such as barrel temperature, screw rotation speed, screw back pressure, injection speed, and injection time, are input and controlled from a setting device (not shown). 16, a nozzle touch plate is used to change the color using a pneumatic or hydraulic cylinder 17, and only during the resin change process crosses the extension line connecting the tip of the heating cylinder 2 and the gate 19 of the mold 18, and goes to the notch 21 of the fixed plate 20. The nozzle opening is closed to prevent the tip of the heating cylinder 2 from being inserted. The operation of this nozzle touch plate 16 is shown in the sequencer as an example.
It is optimal if it is operated in conjunction with other resin changing and color changing operations in step 14.
次に作用動作について説明すると、シーケンサ１４には
切換弁８を作動させて、指定さｉ′Ｌ友時開時間スクリ
ュ４を連続回転させる第１の動作と、ノズル閉鎖位置ま
で移動させる不図示の移動装置によって射出装置全体を
ノズルタッチプレート１６に押付た後、切換弁８を作動
させて電磁比例ＩＪ ＩＪ−フ弁１０で設定された背圧
下で計量を行い、計量完了後射出装置全体を後退させて
ノズルタッチプレート１６からノズルを開放し切換弁７
（５ａ位置に切換えてスクリー４？前進させ、樹脂等を
ノズルよりパージする第２の動作と、ノズルは開放した
まＸ切換弁７をｂ位置に切換えスラリー４全回転させず
に後退させた後、切換弁８を作動させて計量全行い、次
いで切換弁７ ｆ ａ位置としてする第３の動作の各シ
ーケンス動作がプログラムされている。またプロセスコ
ントローラ１５１Ｃ各樹脂替えについての樹脂の組合せ
、又は各色替えのための色の組合せ毎に第１、第２およ
び第３の動作について各電磁比例弁１Ｏ１１２，１３の
設定値とヒータ３の温ＩＷ設定値が予めトライアンドエ
ラーにより求められて登録されており、さらπ色替え、
樹脂替え動作を行う際に動作として第１、第２および第
３の動作のうちの何処を使用するが、また各動作の繰返
し回数は、継続時間は何にするかを指定するプログラム
エリアを持っている。Next, to explain the operation, the sequencer 14 has two operations: a first operation that operates the switching valve 8 and continuously rotates the screw 4 for a specified time i'L open time, and a first operation that moves the nozzle to the nozzle closed position. After the entire injection device is pressed against the nozzle touch plate 16 by the moving device, the switching valve 8 is operated to perform metering under the back pressure set by the electromagnetic proportional IJ valve 10, and after the metering is completed, the entire injection device is moved back. Then open the nozzle from the nozzle touch plate 16 and open the switching valve 7.
(The second operation involves switching to position 5a, moving the scree 4 forward, and purging the resin etc. from the nozzle, and then switching the X switching valve 7 to position b while keeping the nozzle open, and moving the slurry 4 backward without rotating it fully.) , the switching valve 8 is operated to perform full metering, and then the switching valve 7 is set to the f a position.The process controller 151C also controls the combination of resins for each resin change or each color. For each color combination for replacement, the set values of each electromagnetic proportional valve 1O112, 13 and the temperature IW set value of the heater 3 are determined and registered in advance by trial and error for the first, second, and third operations. Ori, Sarapi color change,
It has a program area that specifies which of the first, second, and third movements to use when changing the resin, and the number of repetitions and duration of each movement. ing.
従って色替え、樹脂替えを行うためには、まずプロセス
コントローラ１５に設定された最初の動作モードの各設
定値がヒータ３、電磁比例弁１０．１２．１３に送られ
る。ピータ制御の結果検出値３ａがプロセスコントロー
ラ１５にフィードバックされ、これが設定温度範囲に入
ると動作開始の信号１５ａがシーケンサ１４に送られ最
初の色替、樹脂替え動作が開始される。指定されｆｃ待
時間は回数の動作が完了すると完了信号がプロセスコン
トローラ１５ｖｃ送られ、次の動作モードとなって、捷
ず各設定値がプロセスコントローラ１５から送られ、最
初の動作モードと同様の動作が繰返される。このように
して最初にプロセスコントローラ１５にプログラムされ
た全動１′Ｆ−が完了すると色替え、樹脂替え工程は完
了し、自動的に次の運転動作に切換る工うになっている
。Therefore, in order to change the color or resin, first, each setting value of the initial operation mode set in the process controller 15 is sent to the heater 3 and the electromagnetic proportional valve 10, 12, and 13. The detected value 3a as a result of the Peter control is fed back to the process controller 15, and when it falls within the set temperature range, an operation start signal 15a is sent to the sequencer 14 to start the first color change and resin change operation. When the specified fc waiting time has completed the number of operations, a completion signal is sent to the process controller 15vc, and the next operation mode is entered, each set value is sent from the process controller 15 without changing, and the operation is the same as the first operation mode. is repeated. In this manner, when the full movement 1'F- initially programmed in the process controller 15 is completed, the color change and resin change processes are completed and the next operation is automatically performed.
〈作用効果〉
以上説明した方法により色替え、樹脂替え時間は従来の
１／２〜１／３で良く、色替え、樹脂替債も従来の１／
３〜１１５に節約が出来、歩留り、生産性の向上が可能
となった。<Effects> With the method explained above, the time required for color change and resin change is 1/2 to 1/3 of the conventional time, and the time required for color change and resin change is also 1/1 of the conventional time.
It was possible to save 3 to 115 yen, and it became possible to improve yield and productivity.
第１図は本発明の１実施例？示す図。 Is Fig. 1 an embodiment of the present invention? Figure shown.
Claims (1)
ズルより排出する第１動作、金型又はこれに代るノズル
口閉鎖ブロックによりノズル口を閉鎖して任意の背圧下
で計量した後、ノズル口の閉鎖を解き、任意の速度でパ
ージする第２の動作、ノズル口を開放したまま任意のス
トローク低背圧下で計量した後パージする第３の動作の
各動作の２動作以上組合せて行う色替、樹脂替え動作制
御方法において、各動作に必要な射出成形機の運転条件
である計量ストローク又は計量時間、スクリュ回転数、
スクリュ背圧、射出速度、射出時間、バレル温度および
各動作の継続時間又は繰返し回数等を制御装置の記憶部
に予め記憶させておき、各動作の終了時に自動的に次の
動作の運転条件に切換えることを特徴とする射出成形機
の自動色替え、樹脂替え制御方法。 ２、スクリュを任意の回転数で連続回転させて樹脂をノ
ズルより排出する第１の動作金型又はこれに代るノズル
閉鎖ブロックによりノズル口を閉鎖して、任意の背圧下
で計量した後、ノズル口の閉鎖を解き、任意の速度でパ
ージする第２の動作ノズル口を開放したまま、スクリュ
を回転させずに後退させ、任意時間スクリュを回転させ
て計量した後、パージする第３の動作の各動作を２動作
以上組合せて行う色替え、樹脂替え動作制御方法におい
て、 各動作に必要な射出成形機の運転条件である計量ストロ
ーク又は計量時間、スクリュ回転数、スクリュ背圧、射
出速度、射出時間、バレル温度および各動作の継続時間
又は繰返し回数等を制御装置の記憶部に予め記憶させて
おき、各動作の終了時に自動的に次の動作の運転条件に
切換えることを特徴とする射出成形機の自動色替え、樹
脂替え制御方法。[Claims] 1. The first operation is to discharge the resin from the nozzle by continuously rotating the screw at an arbitrary number of revolutions, and the nozzle opening is closed by a mold or a nozzle opening closing block in place of the nozzle opening, and the nozzle opening is closed at an arbitrary back. The second operation is to unclose the nozzle port and purge at an arbitrary speed after measuring under pressure, and the third operation is to perform metering under low back pressure and purge at an arbitrary stroke with the nozzle orifice open. In the color change and resin change operation control method that combines two or more operations, the operating conditions of the injection molding machine required for each operation are the metering stroke or metering time, screw rotation speed,
Screw back pressure, injection speed, injection time, barrel temperature, and the duration or number of repetitions of each operation are stored in advance in the memory of the control device, and at the end of each operation, the operating conditions for the next operation are automatically changed. Automatic color change and resin change control method for an injection molding machine characterized by switching. 2. The screw is continuously rotated at an arbitrary number of revolutions to discharge the resin from the nozzle.The nozzle opening is closed by a first operating mold or an alternative nozzle closing block, and the resin is measured under an arbitrary back pressure. 2nd operation of unclosing the nozzle port and purging at a desired speed; 3rd operation of leaving the nozzle port open and retracting the screw without rotating; rotating the screw for an arbitrary period of time to measure the amount; and then purging. In the color change and resin change operation control method that combines two or more of the following operations, the operating conditions of the injection molding machine required for each operation are the metering stroke or metering time, screw rotation speed, screw back pressure, injection speed, An injection characterized by storing the injection time, barrel temperature, duration of each operation, number of repetitions, etc. in advance in the memory of the control device, and automatically switching to the operating conditions for the next operation at the end of each operation. Automatic color change and resin change control method for molding machines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21889085A JPS6277913A (en) | 1985-10-01 | 1985-10-01 | Automatic color changing and resin changing method for injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21889085A JPS6277913A (en) | 1985-10-01 | 1985-10-01 | Automatic color changing and resin changing method for injection molding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6277913A true JPS6277913A (en) | 1987-04-10 |
| JPH046530B2 JPH046530B2 (en) | 1992-02-06 |
Family
ID=16726904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21889085A Granted JPS6277913A (en) | 1985-10-01 | 1985-10-01 | Automatic color changing and resin changing method for injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6277913A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62201217A (en) * | 1986-02-28 | 1987-09-04 | Mitsubishi Heavy Ind Ltd | Stopping of color changeover or resin changeover in injection molder |
| EP0419903A2 (en) * | 1989-09-29 | 1991-04-03 | Mitsubishi Jukogyo Kabushiki Kaisha | Raw material resin feeding system for a molding machine |
| EP0423750A2 (en) * | 1989-10-18 | 1991-04-24 | Toshiba Kikai Kabushiki Kaisha | Method of controlling injection molding machines |
| JP2012171107A (en) * | 2011-02-17 | 2012-09-10 | Fanuc Ltd | Injection molding machine provided with nozzle sealing plate and molding operation start method of injection molding machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987137A (en) * | 1982-11-11 | 1984-05-19 | Toshiba Mach Co Ltd | Resin exchange or color exchange device for injection molding machine |
-
1985
- 1985-10-01 JP JP21889085A patent/JPS6277913A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5987137A (en) * | 1982-11-11 | 1984-05-19 | Toshiba Mach Co Ltd | Resin exchange or color exchange device for injection molding machine |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62201217A (en) * | 1986-02-28 | 1987-09-04 | Mitsubishi Heavy Ind Ltd | Stopping of color changeover or resin changeover in injection molder |
| JPH0576409B2 (en) * | 1986-02-28 | 1993-10-22 | Mitsubishi Heavy Ind Ltd | |
| EP0419903A2 (en) * | 1989-09-29 | 1991-04-03 | Mitsubishi Jukogyo Kabushiki Kaisha | Raw material resin feeding system for a molding machine |
| EP0423750A2 (en) * | 1989-10-18 | 1991-04-24 | Toshiba Kikai Kabushiki Kaisha | Method of controlling injection molding machines |
| JP2012171107A (en) * | 2011-02-17 | 2012-09-10 | Fanuc Ltd | Injection molding machine provided with nozzle sealing plate and molding operation start method of injection molding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH046530B2 (en) | 1992-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH0117449B2 (en) | ||
| JPS63297012A (en) | Automatic purge process of injection molding machine | |
| JPS6277913A (en) | Automatic color changing and resin changing method for injection molding machine | |
| JP2507148B2 (en) | Resin characteristic detection method and injection control method for injection molding machine | |
| JP2558891B2 (en) | Raw material resin feeder for molding machine | |
| US4256678A (en) | Method of and apparatus for controlling resin plasticizing process of in-line screw-type injection molding machines | |
| JP2883140B2 (en) | Injection molding machine filling detection method | |
| JP2654897B2 (en) | Discharge method of residual material of screw prepura type injection molding machine | |
| US3288903A (en) | Method for plasticizing and molding | |
| JPS59137680A (en) | Self-diagnosis method of control system for stepping motor driving type control valve | |
| JPH09207180A (en) | Screw preplasticating injection molding machine | |
| JP3546357B2 (en) | Automatic purge control device for injection molding machine | |
| JPS61135720A (en) | Automatic color change in injection molding machine | |
| JPS63218330A (en) | Method for controlling changing over of raw material in injection molder | |
| JP3111413B2 (en) | Injection equipment | |
| JPH0493214A (en) | Resin and color changing device in injection molding machine | |
| JPS61293823A (en) | Color change of injection molder | |
| JPH06210665A (en) | Automatic purging device for injection molding machine | |
| JP2628753B2 (en) | Screw retreat speed control device for injection molding machine | |
| JP2022148019A (en) | Sprayer, method of operating sprayer, and program | |
| JPS5941064Y2 (en) | Hopper raw material feeding device in molding machine | |
| JPH1134135A (en) | Pressure releasing method and control method of injection drive apparatus in injection molding machine | |
| JPH09155942A (en) | Metering method in injection device | |
| JPS6154916A (en) | Resin replacing process of injection molding and its device | |
| JP3597355B2 (en) | Method for stabilizing actual weighing completion position of injection molding machine and weighing control device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |