JP2673173B2 - Resin molding equipment - Google Patents
Resin molding equipmentInfo
- Publication number
- JP2673173B2 JP2673173B2 JP63115994A JP11599488A JP2673173B2 JP 2673173 B2 JP2673173 B2 JP 2673173B2 JP 63115994 A JP63115994 A JP 63115994A JP 11599488 A JP11599488 A JP 11599488A JP 2673173 B2 JP2673173 B2 JP 2673173B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- cylinder
- resin molding
- molding
- resin
- 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
- B29C45/46—Means for plasticising or homogenising the moulding material or forcing it into the mould
- B29C45/58—Details
- B29C45/585—Vibration means for the injection unit or parts thereof
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/14—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the particular extruding conditions, e.g. in a modified atmosphere or by using vibration
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、樹脂成形材料を射出成形により成形する装
置の改良に関する。TECHNICAL FIELD The present invention relates to an improvement in an apparatus for molding a resin molding material by injection molding.
（従来の技術） 熱可塑性又は熱硬化性の樹脂成形材料を補給器からシ
リンダ内に供給し、スクリュウやピストン等の材料移送
手段によって加熱部に送り、加熱部で加熱されて可塑状
となった成形材料をシリンダの先端部に設けたノズルか
ら金型のキヤビテイ内に射出することにより成形する樹
脂成形装置は周知であり、本発明者は先に、特開昭60−
162620号「成形装置」や特開昭61−18162号「樹脂射出
成形方法及び装置」において、新規な成形装置を提案し
た。(Prior Art) A thermoplastic or thermosetting resin molding material is supplied from a replenisher into a cylinder, sent to a heating section by a material transfer means such as a screw or a piston, and heated by the heating section to be plasticized. A resin molding apparatus for molding by injecting a molding material into a cavity of a mold from a nozzle provided at the tip of a cylinder is well known, and the inventor of the present invention has previously disclosed that the molding method is disclosed in JP-A-60-
In 162620 "Molding apparatus" and JP-A-61-18162, "Resin injection molding method and apparatus", a new molding apparatus was proposed.
しかしながら、従来の樹脂成形装置では、ノズルから
金型のキャビテイ内に射出される樹脂の量を一定に保つ
ことが難しく、プラスマイナス10％程度の誤差を生じて
製品の精密度を保つことが困難であった。However, in the conventional resin molding device, it is difficult to keep the amount of resin injected from the nozzle into the cavity of the mold constant, and it is difficult to maintain the precision of the product by causing an error of about ± 10%. Met.
（発明が解決しようとする問題点） 本発明の目的は、成形型部への射出プラスチックの量
のばらつきを減少させ、樹脂の量を一定に制御すること
により、製品の品質を向上させることができる樹脂成形
装置を提供することにある。(Problems to be Solved by the Invention) An object of the present invention is to improve the quality of products by reducing the variation in the amount of injection plastic to the molding die and controlling the amount of resin constant. An object of the present invention is to provide a resin molding device that can be used.
（問題点を解決するための手段とその作用） 本発明の前述した目的は、樹脂成形材料を補給器から
シリンダ内に供給し、材料移送手段によって加熱部に送
り、加熱部で加熱された成形材料を前記シリンダの先端
部からショットキャビテイ内に注入し、ショットキャビ
テイから型キャビテイ内に射出することにより成形する
樹脂成形装置において、前記材料移送手段がスクリュウ
で構成され、このスクリュウを回転駆動するモータと直
列又は並列に振動モータを取付け、前記スクリュウを振
動させて成形材料を攪拌するようにした樹脂成形装置に
よって達成される。(Means for Solving Problems and Actions Thereof) The above-mentioned object of the present invention is to supply a resin molding material from a replenisher into a cylinder, send it to a heating section by a material transfer means, and heat the molding section. In a resin molding apparatus for molding a material by injecting the material into the shot cavity from the tip of the cylinder and injecting the material from the shot cavity into the mold cavity, the material transfer means is constituted by a screw, and a motor for rotationally driving the screw. This is achieved by a resin molding device in which a vibration motor is attached in series or in parallel with the above and the screw is vibrated to stir the molding material.
そして、この構成からなる本発明によれば、スクリュ
ウを回転駆動するモータと直列又は並列に取付けられた
振動モータが回転して振動を発生することにより、スク
リュウが振動して樹脂の混合作用を高め、樹脂の分子が
均一に攪拌されて一様に押し出されるようになる。かく
して、従来よりも正確な樹脂の量で成形されることにな
る。Further, according to the present invention having this configuration, the vibration motor installed in series or in parallel with the motor that rotationally drives the screw rotates to generate vibration, whereby the screw vibrates and the resin mixing action is enhanced. , The resin molecules are uniformly agitated and uniformly extruded. Thus, the amount of resin is more accurate than in the conventional case.
（実施例） 第１図は、本発明の樹脂成形装置の一実施例を表わし
ており、図において、１は樹脂材料押出用シリンダ、２
は材料移送用のスクリュウ、３はシリンダ取付用のフラ
ンジ、４はスクリュウを回転駆動するモータ、4Aはモー
タ４及びスクリュウ２の回転角や回転速度を検出制御す
るためのロータリエンコーダ、５はカツプリング、６は
モータを支持する弾性サポート、７は振動モータ、８は
材料補給器、９は補給器取付部材、10はシリンダ１の先
端部を支承する支柱、13は高周波誘導加熱用励磁コイル
から成る誘導子、15は材料押出用ノズル、16は注入シリ
ンダ、17はショットキャビテイ、18はショットキャビテ
イ17内に摺動自在に収容されたピストン、19は材料を型
キャビテイ（図示せず）内へと射出するノズルをそれぞ
れ表わしている。(Embodiment) FIG. 1 shows an embodiment of a resin molding apparatus of the present invention, in which 1 is a cylinder for resin material extrusion, and 2 is a cylinder.
Is a screw for material transfer, 3 is a flange for mounting a cylinder, 4 is a motor for rotationally driving the screw, 4A is a rotary encoder for detecting and controlling a rotation angle and a rotation speed of the motor 4 and the screw 2, 5 is a coupling, 6 is an elastic support for supporting the motor, 7 is a vibration motor, 8 is a material replenishing device, 9 is a replenishing device mounting member, 10 is a support for supporting the tip of the cylinder 1, and 13 is an induction coil composed of a high frequency induction heating exciting coil. Child, 15 is a material extrusion nozzle, 16 is an injection cylinder, 17 is a shot cavity, 18 is a piston slidably accommodated in the shot cavity 17, and 19 is a material injected into a mold cavity (not shown). Respective nozzles are shown.
かかる構成に基づき、第１図の樹脂成形装置におい
て、樹脂成形材料が補給器８から押出用シリンダ１内に
供給され、スクリュウ２で加熱部すなわちシリンダ１の
中央分に送られ、加熱された後、シリンダ１の先端部に
あるノズル15からショットキャビテイ17内に噴出させら
れ、続いて型キャビテイ内へと送り込まれて、所定の形
状に成形される。Based on such a configuration, in the resin molding apparatus shown in FIG. 1, the resin molding material is supplied from the replenishing device 8 into the extrusion cylinder 1, and is sent to the heating portion, that is, the central portion of the cylinder 1 by the screw 2 and heated. , Is ejected from the nozzle 15 at the tip of the cylinder 1 into the shot cavity 17, and is then fed into the die cavity to be molded into a predetermined shape.
本発明の特徴に基づき、スクリュウ２を回転駆動する
モータ４と直列に振動モータ７が取付けられており、振
動モータ７は例えばその回転軸にアンバランスウエイト
を取付けて回転による遠心力を起振力として利用するも
のでもよい。振動モータ７は回転駆動モータ４の回転軸
又はハウジングに取付けることができ、これによりモー
タ４が振動してスクリュウ２が共振し、スクリュウ２の
回りに充填されている未硬化の成形材料が攪拌されて均
一一様に移送されるようになり、スクリュウ２の回転角
制御により、正確な量が射出されることになる。Based on the characteristics of the present invention, a vibration motor 7 is mounted in series with a motor 4 that rotationally drives the screw 2. The vibration motor 7 has, for example, an unbalanced weight attached to its rotation shaft to generate centrifugal force due to rotation. It may be used as. The vibration motor 7 can be attached to the rotation shaft or the housing of the rotary drive motor 4, whereby the motor 4 vibrates and the screw 2 resonates, and the uncured molding material filled around the screw 2 is agitated. As a result, the screw 2 is uniformly transferred, and an accurate amount is ejected by controlling the rotation angle of the screw 2.
モータ４に電力を供給する電源装置（図示せず）の出
力は、ロータリエンコーダ4Aの検出信号と、予めプログ
ラムされたプログラムの読み出し信号とにより、数値制
御装置（図示せず）を含む制御装置によって制御し、こ
れによりモータ４の始動、停止及びその回転数や回転角
等を制御することができる。The output of a power supply device (not shown) that supplies electric power to the motor 4 is controlled by a control device including a numerical control device (not shown) by a detection signal of the rotary encoder 4A and a read signal of a preprogrammed program. It is possible to control the start and stop of the motor 4 and to control the number of rotations, the rotation angle, and the like of the motor 4.
第１図では、振動モータ７を回転駆動モータ４の後側
に配置したが、振動モータ７をスクリュウ２に直結し、
回転駆動モータ４をベルト機構や歯車機構を介してスク
リュウ２に連結するようにして、両モータを並列に配置
してもよい。In FIG. 1, the vibration motor 7 is arranged on the rear side of the rotary drive motor 4, but the vibration motor 7 is directly connected to the screw 2,
The rotary drive motor 4 may be connected to the screw 2 via a belt mechanism or a gear mechanism so that both motors are arranged in parallel.
また、振動モータは他の型式でもよく、例えば超磁歪
材や電歪材に磁界を作用させて伸縮させることにより振
動を発生させるような機構を用いることもできる。Further, the vibration motor may be of another type, and for example, a mechanism for generating vibration by causing a magnetic field to act on a giant magnetostrictive material or an electrostrictive material to expand and contract can be used.
なお、シリンダ１には適宜の間隔を隔てて温度検出器
及び圧力検出器を複数個取付け、シリンダ１内の各位置
における成形材料の温度及び圧力を常時正確に検出し、
これらの情報を中央制御室のコンピユータに送り、ここ
で装置全体の温度分布、圧力分布を時間の関数として記
録、解析し、近い将来の温度及び圧力の分布を予想し
て、その予測データに基づいて各部への熱供給量を制御
するよう構成して、さらに精密な射出量の制御を行なう
ことが望ましい。A plurality of temperature detectors and pressure detectors are attached to the cylinder 1 at appropriate intervals so that the temperature and pressure of the molding material at each position in the cylinder 1 can always be detected accurately.
This information is sent to the computer in the central control room, where the temperature distribution and pressure distribution of the entire equipment are recorded and analyzed as a function of time, and the temperature and pressure distribution in the near future is predicted, and based on the predicted data. It is desirable to control the amount of heat supplied to each part by means of the control so that the injection amount can be controlled more precisely.
第２図乃至第４図に、本発明の樹脂成形装置により加
熱成形材料が注入される型キャビティを形成する金型部
分を例示する。第２図は、第１の金型61と第２の金型62
の合せ面に小容積、例えば全体の容積の１〜３％程度の
修正溜り63を形成する手法を表わしている。2 to 4 exemplify a mold portion forming a mold cavity into which the heat molding material is injected by the resin molding apparatus of the present invention. FIG. 2 shows a first mold 61 and a second mold 62.
This shows a method of forming a correction pool 63 having a small volume, for example, about 1 to 3% of the total volume on the mating surface.
第３図は、第１の金型71と合せられる相手側金型を、
ピストン74の先端に固定された第２の金型72とシリンダ
壁部73とで構成し、成形材料70を注入する手法を表わし
ている。FIG. 3 shows a mating mold to be combined with the first mold 71,
The method comprises a second mold 72 fixed to the tip of the piston 74 and a cylinder wall 73, and represents a method of injecting the molding material 70.
第４図は、第１の金型81と合せられる相手側金型を外
側部分82と内側部分83とで合成し、外側部分82はシリン
ダ壁部84に溶着し、内側部分83はピストン85の先端に固
定して構成すると共に、金型81と外側部分82との間に修
正溜り88を形成する手法を表わしている。FIG. 4 shows that a mating mold to be fitted with the first mold 81 is composed of an outer part 82 and an inner part 83, the outer part 82 is welded to a cylinder wall part 84, and the inner part 83 is of a piston 85. This is a method of forming the correction reservoir 88 between the die 81 and the outer portion 82 while being fixed to the tip.
特に、第２図と第３図とを組み合わせた第４図の手法
を用いれば、樹脂の射出量が多すぎたときは修正溜りで
吸収し、射出量が少ないときはピストンの押し込み量で
吸収するように、ピストンの移動量を制御すれば、その
位置制御によって精密な量の樹脂が射出されることにな
る。このように、ピストンの先端の一部を金型とするこ
とにより、加熱した樹脂類が金型に固着して詰まり射出
量が不正確になるのを防止することができ、質の高い成
形作業が可能になる。In particular, by using the method of FIG. 4 which is a combination of FIG. 2 and FIG. 3, when the injection amount of resin is too large, it is absorbed by the correction pool, and when the injection amount is small, it is absorbed by the pushing amount of the piston. As described above, if the amount of movement of the piston is controlled, a precise amount of resin is injected by the position control. In this way, by using a part of the tip of the piston as a mold, it is possible to prevent heated resins from sticking to the mold and clogging, resulting in inaccurate injection amounts, and high quality molding work. Will be possible.
以上詳細に説明した如く、本発明の樹脂成形装置によ
れば、成形型部への射出プラスチックの量のばらつきが
減少し、樹脂の量を精密に制御することにより、製品の
品質を向上させることができることになり、その技術的
効果には極めて顕著なものがある。As described in detail above, according to the resin molding apparatus of the present invention, the variation in the amount of injection plastic to the molding die portion is reduced, and the quality of the product is improved by precisely controlling the amount of resin. The technical effect is extremely remarkable.
第１図は本発明の樹脂成形装置の一実施例を示す一部断
面とした正面図、第２図乃至第４図は加熱成形材料が注
入される金型部分を例示する縦断面図である。 １……押出シリンダ、２……スクリュウ ３……フランジ、４……駆動モータ ５……カツプリング、６……弾性サポート ７……振動モータ、８……補給器 15……押出ノズル 16……注入シリンダ 17……ショットキャビテイ 18……ピストン 19……射出ノズルFIG. 1 is a partially sectional front view showing an embodiment of a resin molding apparatus of the present invention, and FIGS. 2 to 4 are longitudinal sectional views illustrating a mold portion into which a heat molding material is injected. . 1 ... Extrusion cylinder, 2 ... Screw 3 ... Flange, 4 ... Drive motor 5 ... Coupling, 6 ... Elastic support 7 ... Vibration motor, 8 ... Replenisher 15 ... Extrusion nozzle 16 ... Injection Cylinder 17 …… Shot cavity 18 …… Piston 19 …… Injection nozzle
Claims (1)
給し、材料移送手段によって加熱部に送り、加熱部で加
熱された成形材料を前記シリンダの先端部からショット
キャビディ内に注入し、ショットキャビティから型キャ
ビティ内に射出することにより成形する樹脂成形装置に
於て、 前記材料移送手段がスクリュウにより構成され、該スク
リュウを回転駆動するモータと直列又は並列に振動モー
タを取付け、該振動モータにより前記スクリュウを振動
させて成形材料を攪拌するようにしたことを特徴とする
樹脂成形装置。1. A resin molding material is supplied into a cylinder from a replenisher and is sent to a heating section by a material transferring means, and the molding material heated by the heating section is injected into the shot cavities from the tip of the cylinder. In a resin molding apparatus for molding by injecting from a shot cavity into a mold cavity, the material transfer means is constituted by a screw, and a vibration motor is attached in series or in parallel with a motor for rotationally driving the screw. The resin molding apparatus is characterized by vibrating the screw to stir the molding material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63115994A JP2673173B2 (en) | 1988-05-14 | 1988-05-14 | Resin molding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63115994A JP2673173B2 (en) | 1988-05-14 | 1988-05-14 | Resin molding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01286814A JPH01286814A (en) | 1989-11-17 |
| JP2673173B2 true JP2673173B2 (en) | 1997-11-05 |
Family
ID=14676223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63115994A Expired - Fee Related JP2673173B2 (en) | 1988-05-14 | 1988-05-14 | Resin molding equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2673173B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2759476B2 (en) * | 1989-02-18 | 1998-05-28 | ファナック株式会社 | Injection molding machine |
| DE19802874A1 (en) * | 1998-01-20 | 1999-07-22 | Mannesmann Ag | Injection molding machine and method for operating such |
| JP7057963B2 (en) * | 2017-12-28 | 2022-04-21 | 東洋機械金属株式会社 | Molding system |
| CN111452315A (en) * | 2020-04-13 | 2020-07-28 | 金晓 | Prevent material advancing device for plastic injection molding machine of curtain coating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0244968Y2 (en) * | 1984-12-12 | 1990-11-29 |
-
1988
- 1988-05-14 JP JP63115994A patent/JP2673173B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01286814A (en) | 1989-11-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |