JPS6359367B2 - - Google Patents
Info
- Publication number
- JPS6359367B2 JPS6359367B2 JP56160432A JP16043281A JPS6359367B2 JP S6359367 B2 JPS6359367 B2 JP S6359367B2 JP 56160432 A JP56160432 A JP 56160432A JP 16043281 A JP16043281 A JP 16043281A JP S6359367 B2 JPS6359367 B2 JP S6359367B2
- Authority
- JP
- Japan
- Prior art keywords
- injection
- plasticizing
- devices
- molten resin
- nozzle
- 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
- 238000002347 injection Methods 0.000 claims description 62
- 239000007924 injection Substances 0.000 claims description 62
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 238000001746 injection moulding Methods 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 238000000465 moulding Methods 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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
- B29C45/76—Measuring, controlling or regulating
-
- 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
- B29C45/03—Injection moulding apparatus
- B29C45/13—Injection moulding apparatus using two or more injection units co-operating with a single mould
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
本発明は射出成形機の射出可塑化装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an injection plasticizing device for an injection molding machine.
射出量が少い製品を成形する場合には射出可塑
化装置におけるスクリユやプランジヤ（以下単に
スクリユという）の射出ストロークを短かくしな
くてはならないので可塑化計量精度や射出工程の
制御精度の維持が困難である。それは前記工程の
制御信号を発するリミツトスイツチ、タイマ等が
安定した作動位置が得られないうちに射出ストロ
ークが完了してしまうことに原因する。 When molding products with a small injection quantity, the injection stroke of the screw or plunger (hereinafter simply referred to as screw) in the injection plasticizing device must be shortened, making it difficult to maintain plasticization metering accuracy and control accuracy of the injection process. Have difficulty. This is due to the fact that the injection stroke is completed before the limit switch, timer, etc. that issue control signals for the process can reach stable operating positions.
従つて、射出量がシヨツト毎にバラツキ、安定
した品質の成形品を連続して得ることが出来なか
つた。この欠点の解決のためにスクリユ径を小さ
くし、射出ストロークを大きくする射出可塑化装
置もあるが、これはスクリユ径が小さいため可塑
化能力が低下し、可塑化計量時間が長くなるとと
もに最大射出量が少くなるという欠点がある。 Therefore, the injection amount varies from shot to shot, making it impossible to continuously obtain molded products of stable quality. In order to solve this problem, there are injection plasticizing devices that reduce the screw diameter and increase the injection stroke, but because the screw diameter is small, the plasticizing ability decreases, the plasticizing metering time becomes longer, and the maximum injection stroke is increased. The disadvantage is that the quantity is small.
本発明は前述のような欠点を取除き、射出量の
少い成形に対しても大きな可塑化能力を有ししか
も精度の良い可塑化計量、射出工程の制御が出来
る射出成形機の射出可塑化装置を提供することで
ある。 The present invention eliminates the above-mentioned drawbacks, and provides an injection plasticizer for an injection molding machine that has a large plasticizing ability even for molding with a small injection amount, and can control the plasticization measurement and injection process with high precision. The purpose is to provide equipment.
次に第１図により本発明の１実施例を、スクリ
ユの射出ストローク中の任意の位置で射出速度お
よび圧力を変化出来る射出可塑化装置２台を用い
る場合を例に採り説明すると、１１および１２は
射出可塑化装置で、夫々スクリユ１３および１４
が油圧モータ１５および１６により回転可能に、
射出シリンダ１７および１８により進退可能に挿
嵌されている。１９および２０はポテンシヨンメ
ータで、夫々前記スクリユ１３および１４の進退
に伴うスクリユ位置の変化を電気信号として検出
するものである。２１および２２は電磁比例流量
調整弁で、作用される電圧等の強弱によりその開
度を調整し、前記射出シリンダ１７および１８に
送る圧油の量を調整し、スクリユ１３および１４
の射出速度を制御するものである。２３および２
４は電磁比例圧力調整弁で作用される電圧等の電
気信号の強弱により、回路中の設定圧力を変化さ
せ、前記射出シリンダ１７および１８の設定圧力
を制御するものである。２５は前記射出可塑化装
置１１および１２の先端部に連結された導入口２
６および２７より溶融樹脂を導入し、合流させ
て、一個の射出孔２８より射出するようにしたノ
ズルである。前記ノズル２８の導入口２６および
２７と射出孔２８の間を連絡する樹脂路２９には
図示してない電磁切換弁等により油圧シリンダ３
０および３１により作動する前記樹脂路２９の開
閉を行うバルブ３２および３３が設けてある。３
４は演算装置で、前記ポテンシヨンメータ１９お
よび２０が検出したスクリユ１３および１４の位
置より射出すべき射出量を算出するものである。
３５は比較判定装置であらかじめ定められた成形
に必要な射出量を設定した設定装置３６の値と前
記演算装置３４で算出した値とを比較し、射出成
形に必要な射出量が射出可塑化装置１１と１２の
うちどちらかの射出量が何秒間必要か、また射出
可塑化装置１１と１２の合計射出量が必要か等を
判定する装置である。３７ないし３９は信号発信
装置で、３７は射出可塑化装置１１を作動させる
に必要な信号を発信する装置で、電磁比例流量調
整弁２１、電磁比例圧力調整弁２３、および図示
してない前記バルブ３２の開き時間を制御するタ
イマ等に作用するものである。３８は射出可塑化
装置１２を作動させるに必要な制御信号を発信す
る装置で、電磁比例流量調整弁２２、同圧力調整
弁２４および図示してない前記バルブ３３の開き
時間を制御するタイマ等に作用するものである。
３９は射出可塑化装置１１および１２を同時に作
動させる信号を発信する装置で前記電磁比例流量
調整弁２１および２２、電磁比例圧力調整弁２３
および２４、あるいは前記バルブ３２および３３
を開く時間を制御するタイマ等に作用するもので
ある。 Next, one embodiment of the present invention will be explained with reference to FIG. 1, taking as an example a case where two injection plasticizing devices 11 and 12 are used that can change the injection speed and pressure at any position during the injection stroke of the screw. are injection plasticizing devices with screws 13 and 14, respectively.
is rotatable by hydraulic motors 15 and 16,
It is fitted into the injection cylinders 17 and 18 so that it can move forward and backward. Reference numerals 19 and 20 indicate potentiometers that detect changes in screw position as the screws 13 and 14 move forward and backward, respectively, as electrical signals. Numerals 21 and 22 are electromagnetic proportional flow rate regulating valves whose opening degree is adjusted depending on the strength of applied voltage, etc., and the amount of pressure oil sent to the injection cylinders 17 and 18 is adjusted.
This controls the injection speed. 23 and 2
Reference numeral 4 controls the set pressure of the injection cylinders 17 and 18 by changing the set pressure in the circuit depending on the strength of an electric signal such as a voltage applied by an electromagnetic proportional pressure regulating valve. Reference numeral 25 denotes an inlet 2 connected to the tips of the injection plasticizing devices 11 and 12.
In this nozzle, molten resin is introduced through 6 and 27, merged, and then injected from one injection hole 28. The hydraulic cylinder 3 is connected to the resin passage 29 communicating between the inlets 26 and 27 of the nozzle 28 and the injection hole 28 by an electromagnetic switching valve (not shown) or the like.
Valves 32 and 33 are provided for opening and closing the resin passage 29, which are operated by the voltages 0 and 31. 3
Reference numeral 4 denotes an arithmetic unit that calculates the injection amount to be ejected from the positions of the screws 13 and 14 detected by the potentiometers 19 and 20.
Reference numeral 35 is a comparison/judgment device that compares the value of the setting device 36 which sets the injection amount necessary for injection molding predetermined with the value calculated by the arithmetic device 34, and determines the injection amount necessary for injection molding. This device determines how many seconds the injection amount of either one of 11 or 12 is required, or whether the total injection amount of the injection plasticizing devices 11 and 12 is required. 37 to 39 are signal transmitting devices, and 37 is a device for transmitting signals necessary to operate the injection plasticizing device 11, which includes an electromagnetic proportional flow rate regulating valve 21, an electromagnetic proportional pressure regulating valve 23, and the aforementioned valves (not shown). It acts on a timer etc. that controls the opening time of 32. Reference numeral 38 denotes a device that sends control signals necessary to operate the injection plasticizing device 12, and includes a timer that controls the opening time of the electromagnetic proportional flow rate regulating valve 22, the same pressure regulating valve 24, and the valve 33 (not shown). It is something that works.
39 is a device that sends a signal to simultaneously operate the injection plasticizing devices 11 and 12, and includes the electromagnetic proportional flow regulating valves 21 and 22 and the electromagnetic proportional pressure regulating valve 23.
and 24, or said valves 32 and 33
It acts on a timer etc. that controls the opening time.
以上のように構成されているので当初に掲げた
欠点が取除かれ、射出量の少い成形に対しても大
きな可塑化能力を有し、しかもスクリユの射出ス
トローク中の任意の位置で射出速度および圧力を
変化させることが出来るので射出速度および圧力
に見合つた射出量に応じて、ノズルに設けたバル
ブを開閉出来、可塑化計量、射出工程制御が正確
に行うことが出来る。また、２台の射出可塑化装
置が夫々射出速度や圧力を変化させることが出
来、射出速度や圧力の組合せが種々出来るので成
形品の形状、あるいは材料樹脂の性質により異な
る運転の諸条件に対処可能である。さらに、射出
可塑化装置２台のうちの１台を樹脂の充填に、他
の１台を保圧用に使用すれば、前者は後者の保圧
工程中に可塑化計量が出来るので、サイクルタイ
ムの短縮にも役立つことが出来る。 With the structure described above, the drawbacks mentioned above have been eliminated, and it has a large plasticizing ability even for molding with a small injection amount, and the injection speed can be adjusted at any position during the injection stroke of the screw. Since the pressure can be changed, the valve provided in the nozzle can be opened or closed depending on the injection speed and the injection amount commensurate with the pressure, and the plasticization metering and injection process control can be performed accurately. In addition, each of the two injection plasticizing machines can change the injection speed and pressure, and various combinations of injection speed and pressure can be made, so it can handle different operating conditions depending on the shape of the molded product or the properties of the resin material. It is possible. Furthermore, if one of the two injection plasticizers is used for resin filling and the other for pressure holding, the former can measure plasticization during the latter pressure holding process, reducing cycle time. It can also be useful for shortening.
第１図は本発明による１実施例を示す図、
１１，１２……射出可塑化装置、１９，２０…
…ポテンシヨンメータ、２５……ノズル、３２，
３３……バルブ、３４……演算装置、３５……比
較判定装置、３６……設定装置、３７，３８，３
９……信号発信装置。
FIG. 1 is a diagram showing one embodiment of the present invention, 11, 12...injection plasticizing device, 19, 20...
... Potentiometer, 25 ... Nozzle, 32,
33... Valve, 34... Arithmetic device, 35... Comparison/judgment device, 36... Setting device, 37, 38, 3
9...Signal transmitting device.
Claims (1)
出可塑化装置と、前記複数個の射出可塑化装置の
夫々の先端部に連結された導入口より前記複数個
の射出可塑化装置からの溶融樹脂を導入し、合流
させて１個の射出孔から射出を行うノズルと、前
記ノズルの溶融樹脂の導入口と射出孔の間に前記
射出可塑化装置の数と同数設けられ前記溶融樹脂
の流れを選択的に開閉するバルブを備えた射出成
形機の射出可塑化装置であつて、予じめ設定され
た溶融樹脂射出量と、複数個の射出装置の有する
総射出能力量とを比較する比較装置を備え、複数
個の射出装置より使用すべき射出装置を選択し、
設定射出量をまかなうに足る射出量を算出する演
算装置を備えたことを特徴とする射出可塑化装
置。 ２ 保圧工程においては複数個の射出装置のう
ち、１個のみ継続してスクリユ又はプランジヤを
前進方向に押し続けることを特徴とする前記特許
請求範囲第１項記載の射出可塑化装置。[Scope of Claims] 1. A plurality of injection plasticizing devices having screws or plungers, and a plurality of injection plasticizing devices from the plurality of injection plasticizing devices through an inlet connected to the tip of each of the plurality of injection plasticizing devices. a nozzle that introduces molten resin, merges the resin, and injects the molten resin from one injection hole, and a number of nozzles that are the same as the number of injection plasticizing devices that are provided between the molten resin introduction port of the nozzle and the injection hole, and the molten resin. The injection plasticizing device of an injection molding machine is equipped with a valve that selectively opens and closes the flow of molten resin, and the preset molten resin injection amount is compared with the total injection capacity of a plurality of injection devices. It is equipped with a comparison device to select the injection device to be used from among multiple injection devices,
An injection plasticizing device characterized by comprising a calculation device that calculates an injection amount sufficient to cover a set injection amount. 2. The injection plasticizing device according to claim 1, wherein in the pressure holding step, only one of the plurality of injection devices continues to push the screw or plunger in the forward direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56160432A JPS5862029A (en) | 1981-10-08 | 1981-10-08 | Injection and plasticizing apparatus of injection molder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56160432A JPS5862029A (en) | 1981-10-08 | 1981-10-08 | Injection and plasticizing apparatus of injection molder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5862029A JPS5862029A (en) | 1983-04-13 |
| JPS6359367B2 true JPS6359367B2 (en) | 1988-11-18 |
Family
ID=15714802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56160432A Granted JPS5862029A (en) | 1981-10-08 | 1981-10-08 | Injection and plasticizing apparatus of injection molder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5862029A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015150686A (en) * | 2014-02-10 | 2015-08-24 | 株式会社デンソー | Plasticizing injection device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR940009897B1 (en) * | 1986-03-27 | 1994-10-18 | 가부시끼가이샤 고마쯔 세이사꾸쇼 | Injection molding machine |
| JP2883140B2 (en) * | 1990-01-24 | 1999-04-19 | 株式会社小松製作所 | Injection molding machine filling detection method |
| JP2918610B2 (en) * | 1990-03-14 | 1999-07-12 | 株式会社小松製作所 | Injection molding machine filling detection method |
| JPH0649314B2 (en) * | 1990-08-04 | 1994-06-29 | 日精樹脂工業株式会社 | Data processing method of injection molding machine |
| JPH0642135U (en) * | 1992-11-11 | 1994-06-03 | 株式会社日本製鋼所 | Converging nozzle device of two-head injection molding machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5077463A (en) * | 1973-09-21 | 1975-06-24 | ||
| JPS51147555A (en) * | 1975-06-12 | 1976-12-17 | Meiki Seisakusho Kk | Multiicolor injection molding machine |
| JPS55245A (en) * | 1978-06-19 | 1980-01-05 | Toshiba Mach Co Ltd | Plasticizing process control method for injection |
-
1981
- 1981-10-08 JP JP56160432A patent/JPS5862029A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5077463A (en) * | 1973-09-21 | 1975-06-24 | ||
| JPS51147555A (en) * | 1975-06-12 | 1976-12-17 | Meiki Seisakusho Kk | Multiicolor injection molding machine |
| JPS55245A (en) * | 1978-06-19 | 1980-01-05 | Toshiba Mach Co Ltd | Plasticizing process control method for injection |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015150686A (en) * | 2014-02-10 | 2015-08-24 | 株式会社デンソー | Plasticizing injection device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5862029A (en) | 1983-04-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2918211B2 (en) | Mold press molding method and molding apparatus | |
| US6099767A (en) | Injection molding system with sequential gate control | |
| AU722465B2 (en) | Injection molding system with sequential gate control | |
| US3767339A (en) | Injection molding control | |
| US3976415A (en) | Injection moulding control | |
| JPS605448B2 (en) | Plastic injection molding machine with program control | |
| EP0365684B1 (en) | Molding method and molding apparatus by use of injection-compression molding machine | |
| US5795509A (en) | Injection method of preplasticization injection molding machine | |
| EP0262229A4 (en) | Injection molding machine. | |
| US4325896A (en) | Electro-hydraulic ram control apparatus | |
| JPS6359367B2 (en) | ||
| JPH0649315B2 (en) | Control method and apparatus for injection molding machine | |
| US4222725A (en) | Electro-hydraulic ram control apparatus | |
| JPS6210815B2 (en) | ||
| JPH0547382B2 (en) | ||
| JPH06262646A (en) | Mold assembly injection molder and the like | |
| JPS61158417A (en) | In-line screw type injection molding machine | |
| JPS6146293B2 (en) | ||
| JPH0639884A (en) | Injection molding machine | |
| JPH085103B2 (en) | Control method and device for injection molding machine | |
| JPH084273Y2 (en) | Hydraulic waveform monitor for injection molding machine | |
| JPS55245A (en) | Plasticizing process control method for injection | |
| SU1164056A1 (en) | Apparatus for controlling moulding machine | |
| JPH0592461A (en) | Measurement controlling method for injection molding machine of in-line screw type | |
| JPH04366610A (en) | Injecting device of plurality of color |