JPH0124616B2 - - Google Patents
Info
- Publication number
- JPH0124616B2 JPH0124616B2 JP20509285A JP20509285A JPH0124616B2 JP H0124616 B2 JPH0124616 B2 JP H0124616B2 JP 20509285 A JP20509285 A JP 20509285A JP 20509285 A JP20509285 A JP 20509285A JP H0124616 B2 JPH0124616 B2 JP H0124616B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- toggle
- mold clamping
- rotating member
- motor
- 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
- 230000033001 locomotion Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000001105 regulatory effect Effects 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
- B29C45/64—Mould opening, closing or clamping devices
- B29C45/66—Mould opening, closing or clamping devices mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は駆動源としてモータを用いた射出成
形機の電動式型締装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electric mold clamping device for an injection molding machine that uses a motor as a drive source.
［従来の技術］
一般的に電動式型締装置では、モータ、送りね
じ、回転部材よりなる駆動装置を用いて、モータ
の回転運動を直進運動に変換し、これにより直接
可動盤を進退させて型締力として利用するか、或
いは可動盤と連動するトグルリンクを作動させて
型開閉を行ない、トグルリンクの伸長により型締
力を発生させていた。[Prior Art] Generally, electric mold clamping devices use a drive device consisting of a motor, a feed screw, and a rotating member to convert the rotational motion of the motor into linear motion, thereby directly moving the movable platen forward and backward. This was used as a mold clamping force, or the mold was opened and closed by operating a toggle link linked to a movable platen, and the mold clamping force was generated by the extension of the toggle link.
［発明が解決しようとする問題点］
型締装置では、型開閉中には高速での型開閉を
必要とし、また型閉じ後には強力な型締力を必要
とする。[Problems to be Solved by the Invention] The mold clamping device requires high-speed mold opening and closing during mold opening and closing, and also requires strong mold clamping force after mold closing.
ところが上記の如く、モータ、送りねじ、回転
部材等による駆動装置を用いた場合には、速度を
大とするためには送りねじのリードを大きくしな
ければならず、また型締力を強力化するためには
ねじリードを小さくしなければならない。 However, as mentioned above, when using a drive device with a motor, feed screw, rotating member, etc., in order to increase the speed, the lead of the feed screw must be increased, and the mold clamping force must be increased. In order to do this, the screw lead must be made smaller.
そのため、従来では、型開閉速度は型締力によ
り制限されてしまい、高速化が計れず問題となつ
ていた。特にこの傾向は直接駆動装置と可動盤を
連結したタイプで大型機の場合に問題となつてい
た。 Therefore, in the past, the mold opening/closing speed was limited by the mold clamping force, making it impossible to increase the speed, which posed a problem. This tendency was particularly problematic for large machines with a direct drive unit and movable platen connected together.
一方、トグルリンクを用いて型締を行うものに
おいては、トグルリンクが伸長し切つた時、タイ
バーを伸長して型締力を発生させているので、型
厚が変わるとそれに応じた型厚に正確に合わせな
いと、正規な型締力を発生できず、また型締力は
タイバーの伸び量によつて決まるが、金型や機構
部品も圧縮力を受けるため、予め設定した金型の
締め代がそのままタイバーの伸びとはならず、更
に複数本のタイバーが均一に力を受けることが難
しいことから型締力が正確に把握し難いというト
グル式本来の問題が残されていた。 On the other hand, with mold clamping using toggle links, when the toggle links are fully extended, the tie bars are extended to generate mold clamping force, so if the mold thickness changes, the mold thickness will change accordingly. If the alignment is not accurate, the proper mold clamping force cannot be generated.The mold clamping force is determined by the amount of extension of the tie bars, but since the mold and mechanical parts also receive compressive force, the preset mold clamping force cannot be generated. The original problem of the toggle type remained, that is, it was difficult to accurately grasp the mold clamping force because the width did not directly correspond to the elongation of the tie bars, and it was difficult for multiple tie bars to receive force uniformly.
［問題点を解決するための手段］
この発明は上記事情により考えられたものであ
つて、その目的とするところは、電動式でありな
がら、型開閉を高速で行うことができ、またトグ
ル機構を用いていながら上記のような問題のない
新たな型締装置を提供することにある。[Means for Solving the Problems] This invention was conceived in view of the above circumstances, and its purpose is to be able to open and close the mold at high speed even though it is an electric type, and to have a toggle mechanism. The object of the present invention is to provide a new mold clamping device that does not have the above-mentioned problems even though it uses the same method.
上記目的による本発明は、開閉移動装置をモー
タとそのモータの出力軸に連結したねじ軸及び該
ねじ軸と噛合した移動自在なトグル側のクロスヘ
ツドとから構成し、上記加圧装置は短筒形で外端
に歯車を有し内周側にねじを有する後部固定盤側
の回転部材と、その回転部材に挿通され、かつ外
周囲に施したねじを介して回転部材と噛合した受
圧盤背部のねじ筒と、該ねじ筒を回転部材を介し
て往復動するモータとから構成してなることを特
徴とするものである。 According to the present invention, the opening/closing moving device comprises a motor, a screw shaft connected to the output shaft of the motor, and a movable crosshead on the toggle side meshing with the screw shaft, and the pressurizing device has a short cylindrical shape. A rotating member on the rear fixed plate side that has a gear on the outer end and a screw on the inner periphery, and a back part of the pressure receiving plate that is inserted through the rotating member and meshed with the rotating member via a screw provided on the outer periphery. It is characterized by being composed of a threaded cylinder and a motor that reciprocates the threaded cylinder via a rotating member.
またこの発明では開閉移動装置のねじ軸及びモ
ータ等は、可動盤と受圧盤とを連結するトグルの
構造に応じて配設することができる。 Further, in the present invention, the screw shaft, motor, etc. of the opening/closing moving device can be arranged according to the structure of the toggle that connects the movable platen and the pressure receiving platen.
［作用］
上記構成よりなる装置では、高速での型開閉は
トグルリンクとモータにより作動する開閉移動装
置により高速度にて行ない、低圧型閉、強力型締
等は後部固定盤と受圧盤との間に設けたモータ作
動の加圧装置により行ない、型締力は受圧盤から
伸長し切つたトグルリンクを介して可動盤に伝達
される。[Function] In the device configured as above, high-speed mold opening/closing is performed by an opening/closing moving device operated by a toggle link and a motor, and low-pressure mold closing, strong mold clamping, etc. are performed by the rear fixed plate and pressure receiving plate. The mold clamping force is carried out by a motor-operated pressurizing device provided between the two molds, and the mold clamping force is transmitted to the movable platen through a toggle link extending from the pressure receiving platen.
以下この発明をタイバーに対して開閉移動装置
を並行に配設した図示の型締装置をもつて具体的
に説明する。 The present invention will be specifically explained below using a mold clamping device shown in the drawings in which an opening/closing moving device is disposed in parallel with the tie bar.
［実施例］
図中２，３は機台１上に所要間隔を空けて対設
した前部固定盤と後部固定盤で、それらは四隅に
貫通したタイバー４，４により連結してある。[Embodiment] Reference numerals 2 and 3 in the figure represent a front fixed plate and a rear fixed plate which are placed opposite each other at a required interval on the machine base 1, and are connected by tie bars 4, 4 passing through the four corners.
上記タイバー４，４には可動盤５と、中央に穴
６ａを、有する圧受盤６とが摺動自在に挿通して
あり、その両盤はダブルトグル７により連結され
ている。 A movable platen 5 and a pressure platen 6 having a hole 6a in the center are slidably inserted through the tie bars 4, 4, and both plates are connected by a double toggle 7.
上記後部固定盤３は中央部に大口径の穴８を有
し、その穴８に短筒形の回転部材９が嵌装してあ
る。この回転部材９の外端は、後部固定盤３に取
付けた型締用のモータ１０の歯車１１と噛合する
歯車１２となつており、内周側にはボール１３が
嵌り込むねじ溝が施してある。 The rear fixed platen 3 has a large diameter hole 8 in the center thereof, and a short cylindrical rotating member 9 is fitted into the hole 8. The outer end of this rotating member 9 is a gear 12 that meshes with a gear 11 of a mold clamping motor 10 attached to the rear stationary platen 3, and the inner circumferential side is provided with a threaded groove into which a ball 13 is fitted. be.
この回転部材９に、上記ボール１３が収まるね
じ溝１４をリードを小さくして外周囲に施したね
じ筒１５が、多数の上記ボール１３を介して噛合
してある。またねじ筒１５の先端は上記圧受盤６
の背面と連結し、後端には型開閉用のモータ１６
が座板１７に固定して設けてある。 A threaded cylinder 15 having a threaded groove 14 in which the balls 13 are accommodated on the outer periphery with a small lead is meshed with the rotating member 9 through a large number of the balls 13. In addition, the tip of the threaded cylinder 15 is connected to the pressure receiving plate 6.
The motor 16 for opening and closing the mold is connected to the back of the mold, and the rear end is connected to the back of the mold.
is fixed to the seat plate 17.
上記モータ１６の出力軸１８は、ねじ筒１５内
に突出しており、その駆動軸１８にボールねじを
リードを大きくして施したねじ軸１９が連結して
ある。このねじ軸１９には上記ダブルトグル７の
中央に位置するクロスヘツド２０が、多数のボー
ル１３を介してねじ込んであり、そのねじ軸１９
の回転に伴つてクロスヘツド２０が軸方向に往復
動するようになつている。 The output shaft 18 of the motor 16 protrudes into the threaded cylinder 15, and a threaded shaft 19 formed by a ball screw with a large lead is connected to the drive shaft 18. A crosshead 20 located at the center of the double toggle 7 is screwed into this screw shaft 19 via a large number of balls 13.
As the crosshead 20 rotates, the crosshead 20 reciprocates in the axial direction.
またクロスヘツド２０と２組のトグルリンク７
ａ，７ａとの間には、リンク７ｂ，７ｂが配設し
てあり、このリンク７ｂ，７ｂによつてトグルリ
ンク７ａ，７ａが伸縮し、可動盤５の移動による
型開閉が生ずるようにしてある。 In addition, a crosshead 20 and two sets of toggle links 7
Links 7b, 7b are arranged between the toggle links 7a, 7a, and the toggle links 7a, 7a are expanded and contracted by the links 7b, 7b, and the mold is opened and closed by the movement of the movable platen 5. be.
なお図は省略したが、ねじ軸１９のねじ部には
クロスヘツド２０の位置を規制するストツパーが
取付けられる。 Although not shown in the drawings, a stopper for regulating the position of the crosshead 20 is attached to the threaded portion of the screw shaft 19.
次に動作について説明する。 Next, the operation will be explained.
型閉動作
第１図の型開状態において、上記モータ１６を
高速にて作動し、ねじ軸１９を反時計方向に回転
する。この回転によりクロスヘツド２０がボール
ねじの作用で前進（右方向）する。クロスヘツド
２０の移動に伴つてリンク７ｂ，７ｂの角度が変
り、トグルリンク７ａ，７ａを押し開く、これに
よりトグルリンク７ａ，７ａは伸長し、その伸長
力は可動盤５と受圧盤６の両方に加わるが、受圧
盤６側はボールねじによる回転部材１３とねじ筒
１５との嵌合により、後退せぬことから、可動盤
５側のみが前進移動して、前記固定盤２と可動盤
５とに分割して取付けた金型２１の高速型閉じが
行われる。Mold Closing Operation In the mold open state shown in FIG. 1, the motor 16 is operated at high speed to rotate the screw shaft 19 counterclockwise. This rotation causes the crosshead 20 to move forward (to the right) by the action of the ball screw. As the crosshead 20 moves, the angles of the links 7b, 7b change, pushing the toggle links 7a, 7a open. As a result, the toggle links 7a, 7a extend, and the extension force is applied to both the movable platen 5 and the pressure receiving plate 6. However, since the pressure receiving plate 6 side does not move backward due to the engagement between the rotating member 13 and the threaded cylinder 15 using ball screws, only the movable platen 5 side moves forward, and the fixed platen 2 and the movable platen 5 High-speed mold closing of the mold 21, which is divided and attached, is performed.
型締動作
上記高速型閉じは、第２図に示すように、トグ
ルリンク７ａ，７ａが完全に伸長して直線状とな
つたときに完了するから、次に上記モータ１０を
低速、低トルクで作動し、歯車１１，１２を介し
て回転部材９を反時計方向に回転する。この回転
によりねじ筒１５が右方向に押出され、それによ
り受圧盤６及び可動盤５もダブルトグル７と共に
前進して、第３図に示すように金型２１を閉じ
る。Mold Clamping Operation The high-speed mold closing is completed when the toggle links 7a, 7a are fully extended and straight as shown in FIG. The rotary member 9 is actuated to rotate the rotating member 9 counterclockwise via the gears 11 and 12. This rotation pushes the threaded cylinder 15 to the right, thereby moving the pressure receiving plate 6 and the movable plate 5 forward together with the double toggle 7, thereby closing the mold 21 as shown in FIG.
低圧による型閉じが完了したことを確認した
後、上記モータ１０を高トルクに切換えて強力型
締力を発生させる。強力型締力は直ちに歯車１
１，１２、回転部材９、ねじ筒１５、受圧盤６、
トグルリンク７ａ，７ａ、可動盤５に伝達され
て、そこに金型２１の強力型締が行われる。 After confirming that mold closing by low pressure has been completed, the motor 10 is switched to high torque to generate strong mold clamping force. Strong mold clamping force immediately applies to gear 1.
1, 12, rotating member 9, screw cylinder 15, pressure receiving plate 6,
It is transmitted to the toggle links 7a, 7a and the movable platen 5, and the mold 21 is strongly clamped there.
型開動作
第３図の型締状態において、上記モータ１０を
強力型締時とは逆方向に回転する。これによりす
べてが強力型締時とは反対の方向に作用して、そ
こに強力型開が生ずる。そしてモータ１０を停止
してから、モータ１６を型閉時とは逆方向に回転
すると、クロスヘツド２０が後退移動して、トグ
ルリンク７ｂ，７ｂが内側に折れ、第１図に示す
ように収縮して可動盤５を後退移動させる。この
結果、金型２１が高速で開かれる。Mold Opening Operation In the mold clamping state shown in FIG. 3, the motor 10 is rotated in the opposite direction to that during strong mold clamping. As a result, everything acts in the opposite direction to that during strong mold clamping, and strong mold opening occurs. Then, when the motor 10 is stopped and the motor 16 is rotated in the opposite direction to the direction used when the mold is closed, the crosshead 20 moves backward and the toggle links 7b, 7b are bent inward and contracted as shown in FIG. to move the movable platen 5 backward. As a result, the mold 21 is opened at high speed.
なお、場合によつてはモータ１６の作動を先行
し、型開き完了後にモータ１０を作動してもよ
い。 In some cases, the motor 16 may be operated in advance and the motor 10 may be operated after the mold opening is completed.
また型厚調整はモータ１０を作動して、受圧盤
６の位置を調整することにより容易に行うことが
できる。 Furthermore, the mold thickness can be easily adjusted by operating the motor 10 and adjusting the position of the pressure receiving plate 6.
更にまたモータ１０，１６はサーボモータを用
いることが好ましいが、回転数とトルクの制御が
可能なものであれば、どのようなモータを用いて
もよい。トグルリンクの開閉及び、強力型開閉に
はローラネジ、すべりねじ等を用いても良いが本
実施例では効率、価格、精度のバランスの良いボ
ールねじを用いた。又、型締用のモータ１０と回
転部材９との間の力の伝達は歯車によらず、ベル
トとプーリー、チエーンとスプロケツト等によつ
ても良い。 Furthermore, although it is preferable to use servo motors for the motors 10 and 16, any motor may be used as long as the number of rotations and torque can be controlled. Although roller screws, sliding screws, etc. may be used for opening and closing the toggle link and strong type opening and closing, a ball screw with a good balance of efficiency, cost, and accuracy was used in this embodiment. In addition, the force transmission between the mold clamping motor 10 and the rotating member 9 may be performed by a belt and a pulley, a chain and a sprocket, etc., instead of using gears.
［発明の効果］
この発明は上述のように構成してなることか
ら、型開閉がトグルリンクとモータにより高速で
行え、しかも低圧型締及び高圧型締、型厚調整は
他のモータによつて行えるため、型厚調整はさほ
ど精度を必要とせず簡単に行える。また型締力も
モータの出力から容易に把握できるから、成形条
件の設定、確認が確実かつ容易に行えると共に、
生産性が向上する。[Effects of the Invention] Since the present invention is configured as described above, the mold can be opened and closed at high speed by the toggle link and the motor, and low-pressure mold clamping, high-pressure mold clamping, and mold thickness adjustment can be performed by another motor. Therefore, mold thickness adjustment can be easily performed without requiring much precision. In addition, mold clamping force can be easily determined from the motor output, making it possible to set and confirm molding conditions reliably and easily.
Productivity improves.
更にまたモータの電流値を制御することによつ
て、トルク制御が容易にでき、トルク検出器など
を使つて力のフイードバツク制御を行い、型締力
を安定化させることもできる。またトグルリンク
は型開閉のみに用いられるため、連結ピンなどの
摩耗も少なくてすみ、トグル開閉用のモータを小
型化できるばかりか、強力型締用のモータも可動
ストロークが小さく、速度を必要としないため、
ねじリードを小さくできるので小型化できるなど
の特長を有する。 Furthermore, by controlling the current value of the motor, torque control can be easily performed, and force feedback control can be performed using a torque detector or the like to stabilize the mold clamping force. In addition, since the toggle link is used only for opening and closing the mold, there is less wear on the connecting pins, etc., and not only can the motor for opening and closing the toggle be made smaller, but the motor for powerful mold clamping also has a small movable stroke and does not require high speed. In order not to
It has the advantage of being compact because the screw lead can be made smaller.
図面はこの発明に係る電動式型締装置の１実施
例を略示するもので、第１図は型開時における横
断平面図、第２図は型閉時の横断平面図、第３図
は型締時の横断平面図である。
２……前部固定盤、３……後部固定盤、４……
タイバー、５……可動盤、６……受圧盤、７……
ダブルトグル、７ａ……トグルリンク、９……回
転部材、１０……型締用のモータ、１３……ボー
ル、１４……ねじ溝、１５……ねじ筒、１６……
開閉移動用のモータ、１９……ねじ軸、２０……
クロスヘツド。
The drawings schematically show one embodiment of the electric mold clamping device according to the present invention, and FIG. 1 is a cross-sectional plan view when the mold is opened, FIG. 2 is a cross-sectional plan view when the mold is closed, and FIG. 3 is a cross-sectional plan view when the mold is closed. FIG. 3 is a cross-sectional plan view when the mold is clamped. 2... Front fixed plate, 3... Rear fixed plate, 4...
Tie bar, 5...movable plate, 6...pressure receiving plate, 7...
Double toggle, 7a... Toggle link, 9... Rotating member, 10... Motor for mold clamping, 13... Ball, 14... Thread groove, 15... Thread cylinder, 16...
Motor for opening/closing movement, 19...Screw shaft, 20...
crosshead.
Claims (1)
にわたるタイバーと、そのタイバーに摺動自在に
挿通した可動盤と受圧盤とにわたり設けられたト
グルと、該トグルを介して可動盤を開閉移動する
装置と、上記受圧盤の背部に連結され、かつトグ
ルを介して可動盤を加圧する装置とからなる型締
装置において、 上記開閉移動装置をモータとそのモータの出力
軸に連結したねじ軸及び該ねじ軸と噛合した移動
自在なトグル側のクロスヘツドとから構成し、上
記加圧装置は短筒形で外端に歯車を有し内周側に
ねじを有する後部固定盤側の回転部材と、その回
転部材に挿通され、かつ外周囲に施したねじを介
して回転部材と噛合した受圧盤背部のねじ筒と、
該ねじ筒を回転部材を介して往復動するモータと
から構成してなることを特徴とする電動式型締装
置。[Scope of Claims] 1. A tie bar extending between a front fixed plate and a rear fixed plate arranged oppositely on the machine base, a toggle provided across a movable plate and a pressure receiving plate slidably inserted through the tie bar, and A mold clamping device consisting of a device that opens and closes the movable platen via a toggle, and a device that is connected to the back of the pressure receiving plate and pressurizes the movable platen via the toggle. The pressurizing device is composed of a screw shaft connected to the output shaft of the pressurizer and a movable crosshead on the toggle side that meshes with the screw shaft, and the pressurizing device has a short cylindrical shape with a gear on the outer end and a screw on the inner circumferential side. a rotating member on the rear fixed plate side; a threaded cylinder on the back of the pressure receiving plate that is inserted through the rotating member and meshed with the rotating member via a screw provided on the outer periphery;
An electric mold clamping device comprising a motor that reciprocates the screw cylinder via a rotating member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20509285A JPS6264520A (en) | 1985-09-17 | 1985-09-17 | Motorized mold clamping device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20509285A JPS6264520A (en) | 1985-09-17 | 1985-09-17 | Motorized mold clamping device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6264520A JPS6264520A (en) | 1987-03-23 |
| JPH0124616B2 true JPH0124616B2 (en) | 1989-05-12 |
Family
ID=16501294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20509285A Granted JPS6264520A (en) | 1985-09-17 | 1985-09-17 | Motorized mold clamping device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6264520A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0674985B1 (en) * | 1994-04-02 | 1999-08-11 | Karl Hehl | Mould closing unit for an injection moulding unit and method for its operation |
| DE19964087B4 (en) * | 1999-12-27 | 2004-03-25 | Mannesmann Plastics Machinery Gmbh | Locking device in an injection molding machine for plastics |
| CN110900230B (en) * | 2019-12-13 | 2021-07-30 | 南京奥新可工程科技有限公司 | Centrifugal pump housing adds clamping apparatus |
-
1985
- 1985-09-17 JP JP20509285A patent/JPS6264520A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6264520A (en) | 1987-03-23 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |