JP2012091220A - Molding machine - Google Patents

Molding machine Download PDF

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JP2012091220A
JP2012091220A JP2010243080A JP2010243080A JP2012091220A JP 2012091220 A JP2012091220 A JP 2012091220A JP 2010243080 A JP2010243080 A JP 2010243080A JP 2010243080 A JP2010243080 A JP 2010243080A JP 2012091220 A JP2012091220 A JP 2012091220A
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belt
drive transmission
injection
pulley
motor
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JP5608045B2 (en
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Yoshihisa Nakatsuka
吉久 中塚
Takeshi Miki
武司 三木
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Toyo Machinery and Metal Co Ltd
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Toyo Machinery and Metal Co Ltd
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Priority to JP2010243080A priority Critical patent/JP5608045B2/en
Priority to PCT/JP2011/074635 priority patent/WO2012057186A1/en
Priority to CN201180051591.XA priority patent/CN103180067B/en
Publication of JP2012091220A publication Critical patent/JP2012091220A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20—Accessories: Details
    • B22D17/32—Controlling equipment
    • 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
    • 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
    • B29C45/53—Means for plasticising or homogenising the moulding material or forcing it into the mould using injection ram or piston
    • B29C45/531—Drive means therefor

Abstract

PROBLEM TO BE SOLVED: To prevent a belt for transmitting a driving force of an injection driving motor from being damaged or breraking, even when applying a relatively high load thereto.SOLUTION: The drive transmission belt 23 for the motor is laid onto drive transmission pulleys 22a, 22b, 22c fixed respectively to the three injection driving motors 8a, 8b, 8c, and a tension idler 25 for the drive transmission belts is provided to press the drive transmission belt 23 for the motor from an inner side to an outer side of the drive transmission belt 23, so as to apply a tension. A portion of the drive transmission belt 23 for the motor passing the vicinity of the respective drive transmission pulleys 22a, 22b, 22c and the tension idler 25 for the drive transmission belts is driven in a mountain fold state, when the three injection driving motors 8a, 8b, 8c are driven at the same time, and a load to the drive transmission belt 23 for the motor is thereby reduced when the drive transmission belt 2 for the motor is rotated at high speed.

Description

本発明は、金型のキャビティに溶融材料を充填して成形を行う、ダイカストマシンや射出成形機等の成形機に関し、特に、金型のキャビティに溶融材料を充填する動力源として複数のモータを用いた成形機に関する。   The present invention relates to a molding machine such as a die casting machine or an injection molding machine that performs molding by filling a mold cavity with a molten material, and more particularly, a plurality of motors as a power source for filling the mold cavity with the molten material. It relates to the molding machine used.

金型のキャビティに溶融金属材料を射出充填して成形品を成形するダイカストマシンにおいては、金型のキャビティ内に溶融金属材料を射出充填する圧力を高く保ち高速で射出することが要求される。そのため、溶融金属材料を金型のキャビティに射出充填する動力源として、単独のモータのみを採用するのではなく、複数のモータを動力源として利用したダイマストマシンが知られており、例えば、本願出願と同一出願人から出願されている特許文献１には、２つの電動サーボモータの回転力を、プーリ、ベルトよりなる回転伝達系を介してボールネジ機構に構成されたボールネジに伝達し、このボールネジの回転によりボールネジに螺合されたボールネジ機構のナット体を軸方向に前進させ、ナット体と共に移動体を前進させるのに伴い射出スリーブ内の金属溶湯を金型のキャビティに射出充填するダイカストマシンが開示されている。   In a die casting machine in which a molten metal material is injection-filled into a mold cavity to form a molded product, it is required to inject at a high speed while maintaining a high pressure for injecting and filling the molten metal material into the mold cavity. Therefore, as a power source for injecting and filling molten metal material into a mold cavity, a single mast machine using a plurality of motors as a power source is known instead of adopting only a single motor. In Patent Document 1 filed by the same applicant as the application, the rotational force of two electric servomotors is transmitted to a ball screw configured in a ball screw mechanism via a rotation transmission system including a pulley and a belt. A die-casting machine that injects and fills the metal melt in the injection sleeve into the mold cavity as the nut body of the ball screw mechanism screwed into the ball screw is advanced in the axial direction by the rotation of the nut and the moving body is advanced together with the nut body. It is disclosed.

特開２００６−３１５０５０号公報JP 2006-31505 A

しかし、前記特許文献１においては、１つではなく２つの電動サーボモータの合成駆動力により移動体を移動させるので、金型のキャビティに金属溶湯を射出充填するための大きな推力を得ることはできるものの、比較的大きな成形体を成形する場合には、２つのモータから得られる駆動力には限界があり、仮に２つのモータにより比較的大きな駆動力を得られたとしても、大型なモータを使用しなければならず、大型モータを採用した場合には成形機の大型化を招いてしまい好ましくない。そこで、比較的小型な成形機であっても大きな駆動力を得るようにするためには、小型モータを３つ以上採用することで比較的大きな駆動力を得ながらにして、成形機の小型化も達成できるであろうと考えが及ぶところではあるのだが、３つやそれ以上のモータの駆動力を利用して大きな駆動力を得て、金型のキャビティに高速射出充填を実行しようとなると、モータの駆動力を伝達するベルトには大きな負荷がかかってしまい、それが原因でベルトの破断や損傷を招いてしまい、故障の原因になってしまう。   However, in Patent Document 1, the moving body is moved by the combined driving force of two electric servo motors instead of one, so that a large thrust for injecting and filling the molten metal into the mold cavity can be obtained. However, when molding a relatively large molded body, there is a limit to the driving force that can be obtained from two motors. Even if a relatively large driving force can be obtained with two motors, a large motor is used. If a large motor is used, the molding machine is undesirably enlarged. Therefore, in order to obtain a large driving force even with a relatively small molding machine, it is possible to reduce the size of the molding machine while obtaining a relatively large driving force by employing three or more small motors. However, it is thought that it will be possible to achieve a high driving force by using the driving force of three or more motors to perform high-speed injection filling into the mold cavity. A large load is applied to the belt for transmitting the driving force, which causes breakage or damage of the belt, resulting in failure.

本発明は、上記課題を解決するものであり、金型のキャビティに溶融材料を射出充填するのに３つやそれ以上の数のモータの駆動力を合成して駆動源として用いる成形機において、ベルトを支持するプーリとベルトにテンションを与えるテンションアイドラの配置を重要視し、モータの駆動力を伝達するためのベルトに比較的大きな負荷が加えられても破断や損傷することを抑止でき、ベルトの破損に伴う故障を防止した成形機を提供することを目的とする。   SUMMARY OF THE INVENTION The present invention solves the above-described problems, and in a molding machine that combines three or more motor driving forces to inject and fill a molten material into a mold cavity and uses it as a driving source. The pulley that supports the belt and the tension idler that gives tension to the belt are regarded as important, and even if a relatively large load is applied to the belt for transmitting the driving force of the motor, it can be prevented from being broken or damaged. It aims at providing the molding machine which prevented the failure accompanying a breakage.

請求項１に係る成形機の発明は、
３つ又はそれ以上の射出駆動用モータと、これらの射出駆動用モータの回転軸部の各々に固定された駆動伝達プーリと、これらの駆動伝達プーリに掛け回された単独のモータ用駆動伝達ベルトとを備え、前記３つ又はそれ以上の射出駆動用モータを回転駆動して得られる合成駆動力を駆動源として前進されることにより、溶融材料を金型のキャビティへ射出充填する射出プランジャを備えた成形機であって、
前記キャビティへ溶融材料を射出充填する際に前記回転運動を直線運動に変換して該直線運動により前記射出プランジャを前進させる第１，第２のボールネジ機構と、
前記第１のボールネジ機構を作動させる第１の被動プーリと、
前記第２のボールネジ機構を作動させる第２の被動プーリと、
前記３つ又はそれ以上の射出駆動用モータのうち何れか１つである第１の射出駆動用モータの回転軸部に固定した第１の駆動伝達プーリと前記第１の被動プーリとに掛け回された第１のベルトと、
前記３つ又はそれ以上の射出駆動用モータのうち、前記第１の射出駆動用モータを除いた何れか１つである第２の射出駆動用モータの回転軸部に固定した第２の駆動伝達プーリと前記第２の被動プーリとに掛け回された第２のベルトと、を備え、
前記モータ用駆動伝達ベルトを内側から外側に向かって押圧して張力を与える駆動伝達ベルト用テンションアイドラを、前記モータ用駆動伝達ベルトの内側に設けたことを特徴とする。 The invention of the molding machine according to claim 1
Three or more injection drive motors, a drive transmission pulley fixed to each of the rotating shafts of these injection drive motors, and a single motor drive transmission belt wound around these drive transmission pulleys And an injection plunger for injecting and filling molten material into the cavity of the mold by being advanced using a combined driving force obtained by rotating the three or more injection driving motors as a driving source. A molding machine,
First and second ball screw mechanisms that convert the rotational motion into a linear motion and advance the injection plunger by the linear motion when the molten material is injected and filled into the cavity;
A first driven pulley for operating the first ball screw mechanism;
A second driven pulley for operating the second ball screw mechanism;
The first drive transmission pulley fixed to the rotary shaft portion of the first injection drive motor, which is any one of the three or more injection drive motors, and the first driven pulley. A first belt,
The second drive transmission fixed to the rotary shaft portion of the second injection drive motor which is one of the three or more injection drive motors excluding the first injection drive motor. A second belt wound around the pulley and the second driven pulley,
A drive transmission belt tension idler that applies tension by pressing the motor drive transmission belt from the inside to the outside is provided inside the motor drive transmission belt.

請求項１の発明によれば、射出プランジャの前進移動により金型のキャビティへ溶融材料を射出充填する際に、３つ又はそれ以上の射出駆動用モータを同方向且つ同高速度で回転させると、これらの駆動伝達プーリに掛け回されたモータ用駆動伝達ベルトは、駆動伝達ベルト用テンションアイドラによりモータ用駆動伝達ベルトの内側から外側に向けて押圧され、張力が与えられた状態が維持されながら、前記３つ又はそれ以上の射出駆動用モータの合成された駆動力を駆動源として回転される。するとそれに伴い、第１，第２の射出駆動用モータの駆動伝達プーリに掛け回された第１，第２のベルトが回転され、第１，第２のベルトに掛け回された第１，第２の被動プーリは回転される。そして、第１，第２の被動プーリの回転駆動により、第１，第２のボールネジ機構が作動されると、第１，第２のボールネジ機構は、回転運動を直線運動に変換して該直線運動により射出プランジャを前進させ、溶融材料を金型のキャビティへ射出充填する。   According to the first aspect of the invention, when the molten material is injected and filled into the cavity of the mold by the forward movement of the injection plunger, when three or more injection driving motors are rotated in the same direction and at the same high speed, The motor drive transmission belts wound around these drive transmission pulleys are pressed from the inside to the outside of the motor drive transmission belt by the drive transmission belt tension idler, and the tensioned state is maintained. The combined driving force of the three or more injection driving motors is rotated as a driving source. Accordingly, the first and second belts wound around the drive transmission pulleys of the first and second injection driving motors are rotated, and the first and first belts wound around the first and second belts are rotated. The second driven pulley is rotated. When the first and second ball screw mechanisms are actuated by the rotational driving of the first and second driven pulleys, the first and second ball screw mechanisms convert the rotational motion into linear motion, and The injection plunger is advanced by movement, and the molten material is injected and filled into the cavity of the mold.

請求項２に係る成形機の発明は、請求項１において、
前記第１のベルトを内側から外側に向かって押圧して該第１のベルトに張力を与える第１のテンションアイドラを、前記第１のベルトの内側に設け、
前記第２のベルトを内側から外側に向かって押圧して該第２のベルトに張力を与える第２のテンションアイドラを、前記第２のベルトの内側に設けたことを特徴とする。 The invention of the molding machine according to claim 2 is the invention according to claim 1,
A first tension idler that presses the first belt from the inside toward the outside and applies tension to the first belt is provided inside the first belt;
A second tension idler that presses the second belt from the inside toward the outside to apply tension to the second belt is provided inside the second belt.

請求項２の発明によれば、射出プランジャからキャビティへ溶融材料を射出充填する際に第１，第２のベルトが回転されるときに、第１，第２のベルトは、第１，第２のテンションアイドラにより第１，第２のベルトの内側から外側に向けて押圧され、張力が与えられた状態で回転される。   According to the invention of claim 2, when the first and second belts are rotated when the molten material is injected and filled from the injection plunger into the cavity, the first and second belts are the first and second belts. The tension idler is pressed from the inside to the outside of the first and second belts and is rotated in a tensioned state.

請求項３に係る成形機の発明は、請求項２において、
前記第１の駆動伝達プーリから前記第１の被動プーリへ移送される第１のベルトの移送方向を往路とし、前記第１の被動プーリから前記第１の駆動伝達プーリへ移送される第１のベルトの移送方向を復路としたとき、前記第１の駆動伝達プーリと前記第１の被動プーリとの間の前記第１のベルトの復路の部位を押圧するようにして、前記第１のテンションアイドラを設け、
前記第２の駆動伝達プーリから前記第２の被動プーリへ移送される第２のベルトの移送方向を往路とし、前記第２の被動プーリから前記第２の駆動伝達プーリへ移送される第２のベルトの移送方向を復路としたとき、前記第２の駆動伝達プーリと前記第２の被動プーリとの間の前記第２のベルトの復路の部位を押圧するようにして、前記第２のテンションアイドラを設けたことを特徴とする。 The invention of the molding machine according to claim 3 is the invention according to claim 2,
The first belt transferred from the first driven pulley to the first drive transmission pulley is defined as the forward direction of the first belt transferred from the first drive transmission pulley to the first driven pulley. When the belt transfer direction is the return path, the first tension idler is configured to press a portion of the return path of the first belt between the first drive transmission pulley and the first driven pulley. Provided,
The second belt transferred from the second driven pulley to the second drive transmission pulley is defined as the forward direction of the second belt transferred from the second drive transmission pulley to the second driven pulley. When the belt transfer direction is the return path, the second tension idler is configured to press the return path portion of the second belt between the second drive transmission pulley and the second driven pulley. Is provided.

請求項３の発明によれば、第１，第２の駆動伝達プーリは第１，第２の射出駆動用モータの回転軸部に固定されていることから、直接的に回転駆動されるものである一方で、第１，第２の被動プーリは第１，第２の駆動伝達プーリからの駆動力が、第１，第２のベルトを介して回転されるものであり、第１，第２の駆動伝達プーリから第１，第２の被動プーリへ移送される第１，第２のベルトの移送方向を往路とし、前記第１の被動プーリから前記第１の駆動伝達プーリへ移送される第１のベルトの移送方向を復路とした場合には、往路と復路の部位の相違により、第１，第２のベルトに対する負荷が相違するが、第１，第２のベルトのうち、ベルトに対する負荷の少ない復路の部位を押圧するようにして、第１，第２のベルトの内側に第１，２のテンションアイドラを配設したことから、第１，第２のベルトが駆動されているときのベルトに対する負担を軽減することができる。   According to the invention of claim 3, since the first and second drive transmission pulleys are fixed to the rotary shaft portions of the first and second injection drive motors, they are directly driven to rotate. On the other hand, in the first and second driven pulleys, the driving force from the first and second drive transmission pulleys is rotated via the first and second belts. The first and second belts transferred from the first drive transmission pulley to the first and second driven pulleys are in the forward direction, and the first transfer pulley is transferred from the first driven pulley to the first drive transmission pulley. When the direction in which the first belt is transported is the return path, the load on the first and second belts differs depending on the difference between the forward path and the return path. Of the first and second belts, the load on the belt is different. The first part is placed inside the first and second belts so as to press the part of the return path with less 2 tension idler From what has been provided, it is possible that the first, second belt to reduce the burden on the belt when it is driven.

本発明によれば、３つ又はそれ以上の射出駆動用モータの回転軸部の各々に固定された駆動伝達プーリに対して単独のモータ用駆動伝達ベルトを掛け回し、該モータ用駆動伝達ベルトの内側から外側に向かう方向にモータ用駆動伝達ベルトを押圧して張力を与える駆動伝達ベルト用テンションアイドラを設けたから、３つ又はそれ以上の射出駆動用モータを同時に駆動しているとき、各駆動伝達プーリの近傍と駆動伝達ベルト用テンションアイドラの近傍とを通過するモータ用駆動伝達ベルトの部位は外側が凸型の山折りの状態で駆動される。これに対し、例えば、駆動伝達ベルト用テンションアイドラをモータ用駆動伝達ベルトの外側に配設するなどして、モータ用駆動伝達ベルトを外側から内側に向かう方向に押圧して該モータ用駆動伝達ベルトに張力を与えるようにすると、モータ用駆動伝達ベルトは、モータ用駆動伝達ベルトを外側から内側に押圧する駆動伝達ベルト用テンションアイドラにより、各駆動伝達プーリ近傍では山折りの状態で駆動される一方で、駆動伝達ベルト用テンションアイドラ近傍では谷折りの状態で駆動される。よって、モータ用駆動伝達ベルトの一部位が、駆動伝達ベルト用テンションアイドラ近傍を通過するときにだけ、山折りとは逆方向の谷折りに反転して曲げられるため破損の原因になるが、本発明では、モータ用駆動伝達ベルトの折れ曲がり部分を全て山折り状態で駆動することができるので、モータ用駆動伝達ベルトが高速で回転されたり、高速回転や停止が繰り返されたとしてもベルトが損傷しないよう耐久性を向上することができ、ひいてはベルトの破損に伴う成形機の故障を防止することができる。   According to the present invention, a single motor drive transmission belt is wound around a drive transmission pulley fixed to each of the rotation shaft portions of three or more injection drive motors. Since a drive transmission belt tension idler that applies tension by pressing the motor drive transmission belt in the direction from the inside to the outside is provided, each drive transmission is performed when three or more injection drive motors are driven simultaneously. The portion of the motor drive transmission belt passing through the vicinity of the pulley and the drive transmission belt tension idler is driven in a state where the outer side is a convex mountain fold. On the other hand, for example, the drive transmission belt tension idler is disposed outside the motor drive transmission belt, and the motor drive transmission belt is pressed in the direction from the outside to the inside, thereby driving the motor drive transmission belt. When the tension is applied to the motor, the motor drive transmission belt is driven in a mountain-folded state near each drive transmission pulley by a drive transmission belt tension idler that presses the motor drive transmission belt from the outside to the inside. In the vicinity of the tension idler for the drive transmission belt, it is driven in a valley folded state. Therefore, only when one part of the motor drive transmission belt passes near the tension idler for the drive transmission belt, it is bent and reversed to the valley fold opposite to the mountain fold. In the invention, since all the bent portions of the motor drive transmission belt can be driven in a mountain fold state, the belt will not be damaged even if the motor drive transmission belt is rotated at high speed or repeated high speed rotation and stoppage. Thus, the durability can be improved, and as a result, the molding machine can be prevented from being damaged due to the breakage of the belt.

さらに、本発明によれば、第１，第２のテンションアイドラは第１，第２のベルトの内側に設けており、これらの第１，第２のベルトは、第１，第２のテンションアイドラにより第１，第２のベルトの内側から外側向けて押圧して張力与えることから、モータ用駆動伝達ベルト同様に、第１，第２のベルトについても、折れ曲がり部分を全て山折り状態で駆動することができるので、第１，第２のベルトが高速回転されてもベルトの耐久性を向上することができ、ベルトの破損に伴う成形機の故障を防止することができる。   Further, according to the present invention, the first and second tension idlers are provided inside the first and second belts, and these first and second belts are provided with the first and second tension idlers. Since the tension is applied by pressing from the inside to the outside of the first and second belts, the bent portions of the first and second belts are all driven in a mountain-folded state, similarly to the drive transmission belt for motors. Therefore, the durability of the belt can be improved even when the first and second belts are rotated at a high speed, and the failure of the molding machine due to the damage of the belt can be prevented.

さらに、本発明によれば、第１，第２のベルトの往路と復路の部位の相違により、ベルトに対する負荷が相違するが、ベルトに対する負荷の小さい復路の部位を押圧するようにして、第１，２のテンションアイドラを配設したことから、第１，第２のベルトが駆動されているときのベルトに対する負担を軽減でき、ベルトの損傷を防止することができる。   Further, according to the present invention, the load on the belt differs depending on the difference between the forward and return paths of the first and second belts. Since the tension idlers 2 and 2 are disposed, the load on the belt when the first and second belts are driven can be reduced, and the belt can be prevented from being damaged.

本発明のダイマストマシンの要部を示す斜視図である。It is a perspective view which shows the principal part of the die-mast machine of this invention. ダイカストマシンの要部を示す概略正面図である。It is a schematic front view which shows the principal part of a die-cast machine. 駆動伝達ベルト用テンションアイドラをモータ用駆動伝達ベルトの外側に配置した場合を示す説明図である。It is explanatory drawing which shows the case where the tension idler for drive transmission belts has been arrange | positioned on the outer side of the drive transmission belt for motors.

以下、本発明の実施形態を図１〜図３により以下に説明する。もちろん、本発明は、その発明の趣旨に反しない範囲で、本実施形態において説明した以外の構成のものに対しても容易に適用可能なことは説明を要するまでもない。   Embodiments of the present invention will be described below with reference to FIGS. Of course, it is needless to say that the present invention can be easily applied to configurations other than those described in the present embodiment without departing from the spirit of the invention.

図１に示すダイカストマシンに構成される要部としての射出系ユニット１には、機台２、機台２上に取り付けられた固定ダイプレート５、固定ダイプレート５などに保持された支持部材６、支持部材６に取り付けられたベース部材３、ベース部材３に取り付けられた保持ブロック４、ベース部材３上で前後進可能に設けられた移動体７、保持ブロック４に取り付けられた３つの射出駆動用モータ８ａ，８ｂ，８ｃ、保持ブロック４に保持され、後述するプーリ、ベルト等を介して作動される第１，第２のボールネジ機構９ａ，９ｂ、移動体７に装着され、移動体７と共に移動する高速射出用の駆動源としてのアキュームレータ（以下、ＡＣＣと称す。）１０、移動体７と一体化され、その内部をピストン体として兼ねる射出プランジャ１１、固定ダイプレート５に取り付けられ、金属溶湯の供給される射出スリーブ１２が構成されている。なお、第１，第２のボールネジ機構９ａ，９ｂには、回転（回転運動）可能に設けられた第１，第２のボールネジ１３ａ，１３ｂと、この第１，第２のボールネジ１３ａ，１３ｂに螺合され、このボールネジ１３ａ，１３ｂの回転に伴い進退（直線運動）される第１，第２のナット体１４ａ，１４ｂを備え、第１，第２のナット体１４ａ，１４ｂは移動体７に固定され、第１，第２のボールネジ１３ａ，１３ｂの一端には、第１，第２の被動プーリ２０ａ，２０ｂが固定されている。   An injection system unit 1 as a main part configured in the die casting machine shown in FIG. 1 includes a machine base 2, a fixed die plate 5 mounted on the machine base 2, a support member 6 held on the fixed die plate 5 and the like. , A base member 3 attached to the support member 6, a holding block 4 attached to the base member 3, a moving body 7 provided so as to be able to move forward and backward on the base member 3, and three injection drives attached to the holding block 4 Motors 8 a, 8 b, 8 c, held by the holding block 4, and mounted on first and second ball screw mechanisms 9 a, 9 b and a moving body 7 that are operated via pulleys, belts, etc., which will be described later. An accumulator (hereinafter referred to as ACC) 10 as a driving source for high-speed injection that moves; an injection plunger 11 that is integrated with the moving body 7 and also serves as a piston body; Attached to a constant die plate 5, the injection sleeve 12 which is supplied molten metal is constructed. The first and second ball screw mechanisms 9a and 9b include first and second ball screws 13a and 13b that are provided so as to be rotatable (rotational motion), and the first and second ball screws 13a and 13b. The first and second nut bodies 14a and 14b are screwed and moved forward and backward (linear motion) as the ball screws 13a and 13b rotate. The first and second nut bodies 14a and 14b are attached to the moving body 7. The first and second driven pulleys 20a and 20b are fixed to one ends of the first and second ball screws 13a and 13b.

ここで、図２に示す３つの射出駆動用モータのうち、右側、左側、上側の順に、第１の射出駆動用モータ８ａ、第２の射出駆動用モータ８ｂ、第３の射出駆動用モータ８ｃとして、以下に説明する。   Here, among the three injection driving motors shown in FIG. 2, the first injection driving motor 8a, the second injection driving motor 8b, and the third injection driving motor 8c are arranged in the order of the right side, the left side, and the upper side. Will be described below.

第１，第２，第３の射出駆動用モータ８ａ，８ｂ，８ｃに有する回転軸部２１には第１，第２，第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃが固定され、これら第１，第２，第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃには、環状のモータ用駆動伝達ベルト２３が掛け回されている。モータ用駆動伝達ベルト２３の内側であって、第１の駆動伝達プーリ２２ａと第２の駆動伝達プーリ２２ｂの間には、モータ用駆動伝達ベルト２３の内側から外側に向かってモータ用駆動伝達ベルト２３を押圧する駆動伝達ベルト用テンションアイドラ２５が保持ブロック４に装着して設けられている。   First, second, and third drive transmission pulleys 22a, 22b, and 22c are fixed to the rotary shaft portion 21 of the first, second, and third injection driving motors 8a, 8b, and 8c. An annular motor drive transmission belt 23 is wound around the second and third drive transmission pulleys 22a, 22b and 22c. Inside the motor drive transmission belt 23 and between the first drive transmission pulley 22a and the second drive transmission pulley 22b, the motor drive transmission belt extends from the inside to the outside of the motor drive transmission belt 23. A drive transmission belt tension idler 25 that presses 23 is mounted on the holding block 4.

また、第１の駆動伝達プーリ２２ａには、第１のベルト２６ａの一方が掛け回されており、その他方側は第１の被動プーリ２０ａに掛け回され、同様に、第２の駆動伝達プーリ２２ｂには、第２のベルト２６ｂの一方が掛け回されており、その他方側は第２の被動プーリ２０ｂに掛け回されている。なお、図２に示すように、第１の駆動伝達プーリ２２ａ、第２の駆動伝達プーリ，２２ｂ、第３の駆動伝達プーリ２２ｃは同径となっており、また、第１の被動プーリ２０ａ、第２の被動プーリ２０ｂも同径となっており、第１，第２，第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃよりも第１，第２の被動プーリ２０ａ，２０ｂは径大となっている。   Further, one of the first belts 26a is wound around the first drive transmission pulley 22a, and the other side is wound around the first driven pulley 20a. Similarly, the second drive transmission pulley One side of the second belt 26b is wound around 22b, and the other side is looped around the second driven pulley 20b. As shown in FIG. 2, the first drive transmission pulley 22a, the second drive transmission pulley 22b, and the third drive transmission pulley 22c have the same diameter, and the first driven pulley 20a, The second driven pulley 20b has the same diameter, and the first and second driven pulleys 20a and 20b are larger in diameter than the first, second and third drive transmission pulleys 22a, 22b and 22c. Yes.

第１のベルト２６ａの内側には、この第１のベルト２６ａを内側から外側に向かって押圧して張力を与える第１のテンションアイドラ２７ａが保持ブロック４に装着して設けられ、同様に、第２のベルト２６ｂの内側には、この第２のベルト２６ｂを内側から外側に向かって押圧して張力を与える第２のテンションアイドラ２７ｂが保持ブロック４に装着して設けられている。そして、第１，第２の駆動伝達プーリ２２ａ，２２ｂから第１，第２の被動プーリ２０ａ，２０ｂへ移送される第１，第２のベルト２６ａ，２６ｂの移送方向を往路Ｇとし、前記第１，第２の被動プーリ２０ａ，２０ｂから第１，第２の駆動伝達プーリ２２ａ，２２ｂへ移送される第１，第２のベルト２６ａ，２６ｂの移送方向を復路Ｂとすると、第１，第２のテンションアイドラ２７ａ，２７ｂは、第１，第２のベルト２６ａ，２６ｂの復路Ｂの部位を押圧するようにして配設している。   On the inner side of the first belt 26a, a first tension idler 27a that applies tension by pressing the first belt 26a from the inner side to the outer side is mounted on the holding block 4, and similarly, On the inner side of the second belt 26b, a second tension idler 27b that applies tension by pressing the second belt 26b from the inner side toward the outer side is provided on the holding block 4. The transfer direction of the first and second belts 26a and 26b transferred from the first and second drive transmission pulleys 22a and 22b to the first and second driven pulleys 20a and 20b is defined as an outward path G, and the first If the transfer direction of the first and second belts 26a and 26b transferred from the first and second driven pulleys 20a and 20b to the first and second drive transmission pulleys 22a and 22b is a return path B, the first and first The two tension idlers 27a and 27b are arranged so as to press the part of the return path B of the first and second belts 26a and 26b.

本実施形態では、第１、第２、第３の３つの射出駆動用モータ８ａ，８ｂ，８ｃの回転力を、これらに掛け回された単独のモータ用駆動伝達ベルト２３で合成し、これを駆動源として、第１，第２のボールネジ機構９ａ，９ｂのナット体１４ａ，１４ｂを移動体７と共に前進させ、射出スリーブ１２に供給された溶融金属材料を、射出プランジャ１１の先端から型閉された金型のキャビティへ射出充填するのだが、射出充填前の状態においては、射出プランジャ１１は最後退位置にあり、第１，第２のナット体１４ａ，１４ｂは最も後退した位置に配置される。   In the present embodiment, the rotational forces of the first, second, and third injection driving motors 8a, 8b, and 8c are synthesized by a single motor driving transmission belt 23 that is wound around them, and this is combined. As drive sources, the nut bodies 14a, 14b of the first and second ball screw mechanisms 9a, 9b are advanced together with the moving body 7, and the molten metal material supplied to the injection sleeve 12 is closed from the tip of the injection plunger 11. In the state before injection filling, the injection plunger 11 is in the last retracted position, and the first and second nut bodies 14a and 14b are disposed in the most retracted positions. .

そして、このような状態において、射出充填工程の開始タイミングに至った場合には、ダイカストマシン全体の制御を司る図示しない制御手段からの指令に基づいて、第１、第２、第３の射出駆動用モータ８ａ，８ｂ，８ｃは、同方向且つ同速度で回転され、これらに対応する第１、第２、第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃに掛け回されたモータ用駆動伝達ベルト２３は、駆動伝達ベルト用テンションアイドラ２５により、モータ用駆動伝達ベルト２３の内側から外側に向けて押圧され、張力が与えられた状態が維持されながら、第１、第２、第３の射出駆動用モータ８ａ，８ｂ，８ｃの合成された駆動力を駆動源として回転される。するとそれに伴い、第１，第２の射出駆動用モータ８ａ，８ｂの駆動伝達プーリ２２ａ，２２ｂに掛け回された第１，第２のベルト２６ａ，２６ｂが回転され、第１，第２のベルト２６ａ，２６ｂが掛け回された第１，第２の被動プーリ２０ａ，２０ｂは回転される。   In such a state, when the start timing of the injection filling process is reached, the first, second, and third injection drives are performed based on a command from a control unit (not shown) that controls the entire die casting machine. The motors 8a, 8b, and 8c are rotated in the same direction and at the same speed, and the motor drive transmission belts 23 are wound around the first, second, and third drive transmission pulleys 22a, 22b, and 22c corresponding thereto. Is pressed by the drive transmission belt tension idler 25 from the inner side to the outer side of the motor drive transmission belt 23, and the tension is applied while the first, second and third injection driving belts are maintained. The motor 8a, 8b, 8c is rotated using the combined driving force of the motors 8a, 8b, 8c as a driving source. Accordingly, the first and second belts 26a and 26b wound around the drive transmission pulleys 22a and 22b of the first and second injection driving motors 8a and 8b are rotated, and the first and second belts are rotated. The first and second driven pulleys 20a and 20b around which 26a and 26b are wound are rotated.

そして、第１，第２は被動プーリ２０ａ，２０ｂの回転駆動により、第１，第２のボールネジ機構が作動されると、第１，第２のボールネジ機構９ａ，９ｂのボールネジ１３ａ，１３ｂの回転運動は、これに螺合された第１，第２のナット体１４ａ，１４ｂによる直線運動により、第１，第２のナット体１４ａ，１４ｂに一体に設けられた移動体７及び射出プランジャ１１が金型側へ前進移動され、それにより、射出スリーブ１２内に有する溶融材料は、固定ダイプレート５に装着された図示しない固定金型と、可動金型とからなる型閉された金型のキャビティへ射出充填される。そして、射出充填工程後には、保圧・冷却工程が行われ、型開きされてから製品が取り出される。そして、そのような成形サイクルが繰り返されることで製品が多数製造される。   When the first and second ball screw mechanisms are operated by the rotational driving of the driven pulleys 20a and 20b, the rotation of the ball screws 13a and 13b of the first and second ball screw mechanisms 9a and 9b is performed. The moving body 7 and the injection plunger 11 provided integrally with the first and second nut bodies 14a and 14b are moved by a linear movement by the first and second nut bodies 14a and 14b screwed into the first and second nut bodies 14a and 14b. The molten material contained in the injection sleeve 12 is moved forward to the mold side, so that the mold cavity formed by a fixed mold (not shown) mounted on the fixed die plate 5 and a movable mold is closed. It is injected and filled. After the injection filling process, a pressure holding / cooling process is performed, and the product is taken out after the mold is opened. And many products are manufactured by repeating such a molding cycle.

以上のように本実施形態のダイカストマシンによれば、３つの射出駆動用モータ８ａ，８ｂ，８ｃと、これら射出駆動用モータ８ａ，８ｂ，８ｃの回転軸部２１の各々に固定された第１，第２，第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃと、これら第１，第２，第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃに掛け回された単独のモータ用駆動伝達ベルト２３とを備え、前記３つの射出駆動用モータ８ａ，８ｂ，８ｃを回転駆動して得られる合成駆動力を駆動源として射出プランジャ１１が前進されることにより、溶融材料を金型のキャビティへ射出充填するダイカストマシンであって、金型のキャビティへ射出スリーブ１２に有する溶融材料を射出充填する際、回転運動を直線運動に変換してこの直線運動により射出プランジャ１１を前進させる第１，第２のボールネジ機構９ａ，９ｂと、第１のボールネジ機構９ａを作動させる第１の被動プーリ２０ａと、第２のボールネジ機構９ｂを作動させる第２の被動プーリ２０ｂと、前記３つの射出駆動用モータとしての第１，第２，第３の射出駆動用モータ８ａ，８ｂ，８ｃのうち何れか１つである第１の射出駆動用モータ８ａの回転軸部２１に固定した第１の駆動伝達プーリ２２ａと第１の被動プーリ２０ａとに掛け回された第１のベルト２６ａと、前記第１の射出駆動用モータ８ａを除いた何れか１つである第２の射出駆動用モータ８ｂの回転軸部２１に固定した第２の駆動伝達プーリ２２ｂと第２の被動プーリ２０ｂとに掛け回された第２のベルト２６ｂとを備え、モータ用駆動伝達ベルト２３を内側から外側に向かって押圧して張力を与える駆動伝達ベルト用テンションアイドラ２５を、モータ用駆動伝達ベルト２３の内側に設けたものである。   As described above, according to the die casting machine of this embodiment, the first injection motors 8a, 8b, 8c and the first rotary shafts 21 of the injection driving motors 8a, 8b, 8c are fixed. , Second and third drive transmission pulleys 22a, 22b, and 22c, and a single motor drive transmission belt 23 wound around the first, second, and third drive transmission pulleys 22a, 22b, and 22c. A die casting for injecting and filling molten material into a mold cavity by advancing the injection plunger 11 using a combined driving force obtained by rotationally driving the three injection driving motors 8a, 8b and 8c as a driving source; When the molten material in the injection sleeve 12 is injected and filled into the mold cavity, the rotary motion is converted into a linear motion, and the injection plunger 11 is moved by this linear motion. The first and second ball screw mechanisms 9a and 9b to be advanced, the first driven pulley 20a for operating the first ball screw mechanism 9a, the second driven pulley 20b for operating the second ball screw mechanism 9b, and Fixed to the rotary shaft portion 21 of the first injection driving motor 8a, which is one of the first, second and third injection driving motors 8a, 8b, 8c as three injection driving motors. A second injection drive that is any one of the first drive transmission pulley 22a and the first driven pulley 20a except for the first belt 26a and the first injection drive motor 8a. The second drive transmission pulley 22b fixed to the rotary shaft portion 21 of the motor 8b and the second belt 26b wound around the second driven pulley 20b are provided, and the motor drive transmission belt 23 is moved from the inside to the outside. Towards The drive transmission belt tension idler 25 tensioning by applying, but on the inside of the motor drive transmission belt 23.

以上の構成によれば、第１，第２，第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃに対して単独のモータ用駆動伝達ベルト２３を掛け回し、モータ用駆動伝達ベルト２３の内側から外側に向かう方向にモータ用駆動伝達ベルト２３を押圧して張力を与える駆動伝達ベルト用テンションアイドラ２５を設けたから、金型のキャビティに溶融材料を射出充填するため、射出駆動用モータ８ａ，８ｂ，８ｃを高速等で回転駆動しているとき、第１，第２，第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃの近傍と駆動伝達ベルト用テンションアイドラ２５の近傍を通過するモータ用駆動伝達ベルト２３の部位は、全て外側が凸型の山折りの状態で駆動される。よって、図３に示すように、例えば、駆動伝達ベルト用テンションアイドラ１２５を、モータ用駆動伝達ベルト２３の内側でなく外側に配設するなどして、モータ用駆動伝達ベルト２３を外側から内側に向かう方向に押圧してこのモータ用駆動伝達ベルト２３に張力を与えるようにしたりすると、モータ用駆動伝達ベルト２３は、モータ用駆動伝達ベルト２３を外側から内側に押圧する駆動伝達ベルト用テンションアイドラ１２５により、第１，第２，第３の駆動伝達プーリ２２ａ，２２ｂ，２２ｃの近傍では山折りの状態で駆動される一方で、駆動伝達ベルト用テンションアイドラ１２５の近傍では谷折りの状態で駆動され、モータ用駆動伝達ベルト２３の一部位が、駆動伝達ベルト用テンションアイドラ１２５の近傍を通過するときにだけ、山折りとは逆方向の谷折りに反転して曲げられてしまい、曲げ方向の相違によってモータ用駆動伝達ベルトに大きな負荷が加わってしまうが、本発明では、モータ用駆動伝達ベルト２３の折れ曲がり部分を全て山折りの状態で駆動することができるから、モータ用駆動伝達ベルト２３が高速等で回転されたり、高速回転や停止が繰り返されてもベルトが損傷しないよう耐久性を向上することが可能となり、ひいてはベルトの破損に伴うダイカストマシンの故障を防止することができる。   According to the above configuration, the single motor drive transmission belt 23 is wound around the first, second, and third drive transmission pulleys 22a, 22b, and 22c, and the motor drive transmission belt 23 is moved from the inside to the outside. Since the drive transmission belt tension idler 25 that applies tension by pressing the motor drive transmission belt 23 in the direction toward it is provided, the injection drive motors 8a, 8b, and 8c are used to inject and fill the molten material into the mold cavity. The portion of the motor drive transmission belt 23 that passes through the vicinity of the first, second, and third drive transmission pulleys 22a, 22b, and 22c and the vicinity of the drive transmission belt tension idler 25 when rotating at high speed or the like. Are driven in a mountain-folded state where the outside is convex. Therefore, as shown in FIG. 3, for example, the drive transmission belt tension idler 125 is disposed outside the motor drive transmission belt 23 instead of inside, so that the motor drive transmission belt 23 is moved from the outside to the inside. When tension is applied to the motor drive transmission belt 23 by pressing in the direction toward the motor, the motor drive transmission belt 23 presses the motor drive transmission belt 23 from the outside to the inside. Thus, while driving near the first, second and third drive transmission pulleys 22a, 22b and 22c, it is driven in a mountain fold state, while driving near the drive transmission belt tension idler 125, it is driven in a valley fold state. When a portion of the motor drive transmission belt 23 passes in the vicinity of the drive transmission belt tension idler 125, In the present invention, the motor drive transmission belt 23 is bent. However, in the present invention, the motor drive transmission belt 23 is bent. Since all parts can be driven in a mountain-folded state, durability can be improved so that the belt is not damaged even if the motor drive transmission belt 23 is rotated at a high speed or repeated high-speed rotation or stoppage. As a result, it is possible to prevent the failure of the die casting machine due to the breakage of the belt.

さらに、本発明によれば、第１，第２のテンションアイドラ２７ａ，２７ｂは第１，第２のベルト２６ａ，２６ｂの内側に設けており、これらの第１，第２のベルト２６ａ，２６ｂは、第１，第２のテンションアイドラ２７ａ，２７ｂによって、第１，第２のベルト２６ａ，２６ｂの内側から外側向けて押圧して張力が与えられることから、モータ用駆動伝達ベルト２３と同様に、第１，第２のベルト２６ａ，２６ｂについても、折れ曲がり部分を全て山折り状態で駆動することができるので、第１，第２のベルト２６ａ，２６ｂが高速回転されたり、高速回転や停止が繰り返されたとしてもベルトの耐久性を向上することができ、ベルトの破損に伴う成形機の故障を防止することができる。   Further, according to the present invention, the first and second tension idlers 27a and 27b are provided inside the first and second belts 26a and 26b, and the first and second belts 26a and 26b are Since the first and second tension idlers 27a and 27b press the inner side and the outer side of the first and second belts 26a and 26b to apply the tension, similarly to the motor drive transmission belt 23, The first and second belts 26a and 26b can also be driven in a state where all the bent portions are mountain-folded. Therefore, the first and second belts 26a and 26b are rotated at a high speed, and are repeatedly rotated and stopped at a high speed. Even if it is, the durability of the belt can be improved, and the failure of the molding machine due to the breakage of the belt can be prevented.

さらに、本発明によれば、第１，第２のベルト２６ａ，２６ｂの往路Ｇと復路Ｂの部位の相違により、ベルトに対する負荷が相違するが、ベルトに対する負荷の小さい復路Ｂの部位を押圧するようにして、第１，２のテンションアイドラ２７ａ，２７ｂを配設したことから、第１，第２のベルト２６ａ，２６ｂが駆動されているときのベルトに対する負担を軽減でき、ベルトの磨耗や損傷を可及的に防止することができる。   Further, according to the present invention, the load on the belt is different due to the difference between the forward path G and the return path B of the first and second belts 26a and 26b, but the return path B having a small load on the belt is pressed. Thus, since the first and second tension idlers 27a and 27b are arranged, the load on the belt when the first and second belts 26a and 26b are driven can be reduced, and the belt is worn or damaged. Can be prevented as much as possible.

以上、本実施形態の一例を詳述したが、本発明は、前記実施形態に限定されるものではなく、本発明の要旨の範囲内で種々の変形実施が可能である。上記一例では、射出駆動用モータを３つ構成されるものとして説明したが、４つなど３つ以上構成するようにしてもよく、また、成形機としては、ダイカストマシンに限らず、熱可塑性樹脂を金型のキャビティへ射出充填する射出成形機であってもよい。   As mentioned above, although an example of this embodiment was explained in full detail, this invention is not limited to the said embodiment, A various deformation | transformation implementation is possible within the range of the summary of this invention. In the above example, three injection driving motors have been described. However, three or more, such as four, may be configured, and the molding machine is not limited to a die casting machine, but is a thermoplastic resin. It may be an injection molding machine that injects and fills a mold cavity.

８ａ 第１の射出駆動用モータ（射出駆動用モータ）
８ｂ 第２の射出駆動用モータ（射出駆動用モータ）
８ｃ 第３の射出駆動用モータ（射出駆動用モータ）
９ａ 第１のボールネジ機構
９ｂ 第２のボールネジ機構
１１ 射出プランジャ
２０ａ 第１の被動プーリ
２０ｂ 第２の被動プーリ
２１ 回転軸部
２２ａ 第１の駆動伝達プーリ（駆動伝達プーリ）
２２ｂ 第２の駆動伝達プーリ（駆動伝達プーリ）
２２ｃ 第３の駆動伝達プーリ（駆動伝達プーリ）
２３ モータ用駆動伝達ベルト
２５ 駆動伝達ベルト用テンションアイドラ
２６ａ 第１のベルト
２６ｂ 第２のベルト
２７ａ 第１のテンションアイドラ
２７ｂ 第２のテンションアイドラ 8a First injection driving motor (injection driving motor)
8b Second injection drive motor (injection drive motor)
8c Third injection drive motor (injection drive motor)
9a First ball screw mechanism 9b Second ball screw mechanism 11 Injection plunger 20a First driven pulley 20b Second driven pulley 21 Rotating shaft portion 22a First drive transmission pulley (drive transmission pulley)
22b Second drive transmission pulley (drive transmission pulley)
22c Third drive transmission pulley (drive transmission pulley)
23 Motor drive transmission belt 25 Drive transmission belt tension idler 26a First belt 26b Second belt 27a First tension idler 27b Second tension idler

Claims (3)

３つ又はそれ以上の射出駆動用モータと、これらの射出駆動用モータの回転軸部の各々に固定された駆動伝達プーリと、これらの駆動伝達プーリに掛け回された単独のモータ用駆動伝達ベルトとを備え、前記３つ又はそれ以上の射出駆動用モータを回転駆動して得られる合成駆動力を駆動源として前進されることにより、溶融材料を金型のキャビティへ射出充填する射出プランジャを備えた成形機であって、
前記キャビティへ溶融材料を射出充填する際に前記回転運動を直線運動に変換して該直線運動により前記射出プランジャを前進させる第１，第２のボールネジ機構と、
前記第１のボールネジ機構を作動させる第１の被動プーリと、
前記第２のボールネジ機構を作動させる第２の被動プーリと、
前記３つ又はそれ以上の射出駆動用モータのうち何れか１つである第１の射出駆動用モータの回転軸部に固定した第１の駆動伝達プーリと前記第１の被動プーリとに掛け回された第１のベルトと、
前記３つ又はそれ以上の射出駆動用モータのうち、前記第１の射出駆動用モータを除いた何れか１つである第２の射出駆動用モータの回転軸部に固定した第２の駆動伝達プーリと前記第２の被動プーリとに掛け回された第２のベルトと、を備え、
前記モータ用駆動伝達ベルトを内側から外側に向かって押圧して張力を与える駆動伝達ベルト用テンションアイドラを、前記モータ用駆動伝達ベルトの内側に設けたことを特徴とする成形機。 Three or more injection drive motors, a drive transmission pulley fixed to each of the rotating shafts of these injection drive motors, and a single motor drive transmission belt wound around these drive transmission pulleys And an injection plunger for injecting and filling molten material into the cavity of the mold by being advanced using a combined driving force obtained by rotating the three or more injection driving motors as a driving source. A molding machine,
First and second ball screw mechanisms that convert the rotational motion into a linear motion and advance the injection plunger by the linear motion when the molten material is injected and filled into the cavity;
A first driven pulley for operating the first ball screw mechanism;
A second driven pulley for operating the second ball screw mechanism;
The first drive transmission pulley fixed to the rotary shaft portion of the first injection drive motor, which is any one of the three or more injection drive motors, and the first driven pulley. A first belt,
The second drive transmission fixed to the rotary shaft portion of the second injection drive motor which is one of the three or more injection drive motors excluding the first injection drive motor. A second belt wound around the pulley and the second driven pulley,
A molding machine, wherein a tension idler for driving transmission belt that applies tension by pressing the driving transmission belt for motor from the inside to the outside is provided inside the driving transmission belt for motor. 前記第１のベルトを内側から外側に向かって押圧して該第１のベルトに張力を与える第１のテンションアイドラを、前記第１のベルトの内側に設け、
前記第２のベルトを内側から外側に向かって押圧して該第２のベルトに張力を与える第２のテンションアイドラを、前記第２のベルトの内側に設けたことを特徴とする請求項１に記載の成形機。 A first tension idler that presses the first belt from the inside toward the outside and applies tension to the first belt is provided inside the first belt;
The second tension idler that presses the second belt from the inside toward the outside to apply tension to the second belt is provided inside the second belt. The molding machine described. 前記第１の駆動伝達プーリから前記第１の被動プーリへ移送される第１のベルトの移送方向を往路とし、前記第１の被動プーリから前記第１の駆動伝達プーリへ移送される第１のベルトの移送方向を復路としたとき、前記第１の駆動伝達プーリと前記第１の被動プーリとの間の前記第１のベルトの復路の部位を押圧するようにして、前記第１のテンションアイドラを設け、
前記第２の駆動伝達プーリから前記第２の被動プーリへ移送される第２のベルトの移送方向を往路とし、前記第２の被動プーリから前記第２の駆動伝達プーリへ移送される第２のベルトの移送方向を復路としたとき、前記第２の駆動伝達プーリと前記第２の被動プーリとの間の前記第２のベルトの復路の部位を押圧するようにして、前記第２のテンションアイドラを設けたことを特徴とする請求項２に記載の成形機。 The first belt transferred from the first driven pulley to the first drive transmission pulley is defined as the forward direction of the first belt transferred from the first drive transmission pulley to the first driven pulley. When the belt transfer direction is the return path, the first tension idler is configured to press a portion of the return path of the first belt between the first drive transmission pulley and the first driven pulley. Provided,
The second belt transferred from the second driven pulley to the second drive transmission pulley is defined as the forward direction of the second belt transferred from the second drive transmission pulley to the second driven pulley. When the belt transfer direction is the return path, the second tension idler is configured to press the return path portion of the second belt between the second drive transmission pulley and the second driven pulley. The molding machine according to claim 2, wherein the molding machine is provided.
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DE102020000672A1 (en) 2019-02-06 2020-08-06 Fanuc Corporation EJECTOR MECHANISM OF AN INJECTION MOLDING MACHINE

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JP2000318002A (en) * 1999-05-07 2000-11-21 Sumitomo Heavy Ind Ltd Injection mechanism of motorized injection molding machine
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9884364B2 (en) 2014-07-02 2018-02-06 Toshiba Kikai Kabushiki Kaisha Molding apparatus
DE102020000672A1 (en) 2019-02-06 2020-08-06 Fanuc Corporation EJECTOR MECHANISM OF AN INJECTION MOLDING MACHINE
US11117298B2 (en) 2019-02-06 2021-09-14 Fanuc Corporation Ejector mechanism of injection molding machine

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CN103180067B (en) 2015-06-24
CN103180067A (en) 2013-06-26
WO2012057186A1 (en) 2012-05-03

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