WO2015025806A1 - Injection molding machine - Google Patents
Injection molding machine Download PDFInfo
- Publication number
- WO2015025806A1 WO2015025806A1 PCT/JP2014/071527 JP2014071527W WO2015025806A1 WO 2015025806 A1 WO2015025806 A1 WO 2015025806A1 JP 2014071527 W JP2014071527 W JP 2014071527W WO 2015025806 A1 WO2015025806 A1 WO 2015025806A1
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- WIPO (PCT)
- Prior art keywords
- ball screw
- screw shaft
- molding machine
- injection molding
- sleeve
- Prior art date
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- 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
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
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- 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
- B29C45/47—Means for plasticising or homogenising the moulding material or forcing it into the mould using screws
- B29C45/50—Axially movable screw
- B29C45/5008—Drive means therefor
- B29C2045/5056—Drive means therefor screws axially driven by a rotatable screw shaft cooperating with a fixed nut
Definitions
- the present invention relates to an injection molding machine that injects a thermoplastic resin melted in a heating cylinder into a mold cavity closed from an injection nozzle. More particularly, the present invention relates to an injection molding machine that can reliably transmit drive for operating a nut body screwed to a ball screw shaft to inject a thermoplastic resin from an injection nozzle.
- a conventional general injection molding machine is provided with a ball screw mechanism or the like that converts a rotational motion composed of a ball screw shaft and a nut body into a linear drive, and when the ball screw shaft is rotated by driving a motor, The nut body is moved forward or backward.
- the ball screw shaft is advanced in accordance with the forward movement of the nut body, the screw provided in the heating cylinder is advanced along with it, and from the injection nozzle attached to the tip of the heating cylinder to the cavity of the closed mold.
- the thermoplastic resin melted in the heating cylinder is injected and filled.
- Patent Document 1 discloses a first bearing in which a shaft portion positioned on the rear end side of a ball screw shaft is fixed to a pusher plate via a cylindrical support fixed to the shaft portion.
- An injection molding machine is disclosed that performs an injection process by advancing a screw in a heating cylinder that is integrally supported on a pusher plate.
- Patent Document 2 in a two-plate type injection device including a front plate and a pusher plate, a front end portion of a ball screw is attached to the front plate via a bearing and a sleeve, and a rear portion of the ball screw is attached to a pusher plate. It is disclosed that the pusher plate is moved forward to perform the injection process by screwing into a ball nut provided on the head and rotating the ball screw by an injection motor.
- Patent Document 1 In a known injection molding machine in which a rotary motion is converted into a linear motion by a ball screw mechanism including a ball screw shaft and a nut body screwed to the ball screw shaft, and the screw is advanced, for example, as shown in Patent Document 1
- a cylindrical support called a sleeve is disposed between a ball screw shaft and a bearing.
- the cylindrical support is fixed by being fitted to the ball screw shaft or the like.
- the fixed cylindrical support is loosened for some reason, the drive transmission to the ball screw shaft is adversely affected. Therefore, it is required to securely fasten parts such as a cylindrical support to which the driving force is transmitted so as not to loosen.
- the present invention has been made in view of the above problems, and an object of the present invention is to provide an injection molding machine that can reliably transmit drive to a ball screw shaft that is driven when an injection process is executed.
- the invention of this injection molding machine includes a ball screw mechanism comprising a ball screw shaft that is rotatably provided and a nut body screwed to the ball screw shaft, a bearing that supports the ball screw shaft, and the bearing that is mounted.
- An injection molding machine comprising a pusher plate that is movable forward and backward as the ball screw shaft is rotated when performing a process, and is fitted to the outer periphery of the ball screw shaft, and the ball screw shaft A cylindrical sleeve disposed between the bearing, a lock nut that is screwed onto the ball screw shaft and prevents the sleeve fitted to the outer periphery of the ball screw shaft, and is attached to the sleeve And a pulley.
- the invention of the present injection molding machine comprises: a wedge provided between the ball screw shaft and the pulley; and a screw that presses the wedge against the ball screw shaft by rotation and fixes the pulley to the ball screw shaft.
- the fixing means is provided.
- the invention of the present injection molding machine is characterized in that the pusher plate is engaged with a guide rail provided under the pusher plate and is supported so as to freely advance and retract.
- the lock nut screwed to the ball screw shaft is fixed so that the sleeve fitted to the outer periphery of the ball screw shaft does not come off, and the sleeve and the ball screw shaft are fixed integrally with the sleeve.
- the pulley is fixed to the ball screw by attaching the pulley.
- the fixing means including the wedge and the screw fixes the pulley to the ball screw shaft
- the pulley is fixed to the ball screw shaft by fixing the sleeve via the sleeve and fixing by the fixing device. It is fixed by two means. Therefore, it is possible to reliably transmit the drive to the ball screw shaft that is operated when the injection process is executed.
- FIG. 1 is a cross-sectional view showing a state in which an injection unit configured in the injection molding machine of the present invention is viewed from the side.
- FIG. 2 is a cross-sectional view showing a state where an injection unit configured in the injection molding machine of the present invention is viewed from above.
- FIG. 3 is an enlarged cross-sectional view showing a main part of the injection unit.
- An example of the injection molding machine of the present invention is to manufacture a molded body using pellets as a granular thermoplastic resin as a raw material.
- the injection molding machine includes a machine base 1 on which an injection unit 2 for injecting and filling a thermoplastic resin into a mold cavity closed with a mold and a mold clamping unit (not shown) for opening and closing the mold. ).
- the injection unit 1 is provided with a cylindrical heating cylinder 3, an injection nozzle 4 provided at the tip of the heating cylinder 3, and provided in the heating cylinder 3 and supplied to the heating cylinder 3.
- a screw 5 for kneading the thermoplastic resin a heating cylinder mounting bracket 6 for supporting the heating cylinder 3, and a heating cylinder mounting bracket 6 that supports the screw 5 rotatably and moves forward and backward with respect to the heating cylinder mounting bracket 6.
- a pusher plate 7 provided at the rear, a ball screw shaft 8 rotatably supported by the pusher plate 7 and the heating cylinder mounting bracket 6, and screwed to the ball screw shaft 8 and fixed to the heating cylinder mounting bracket 6.
- a ball screw mechanism 10 including a nut body 9, a heating cylinder mounting bracket 6, and a pusher
- the ball screw is fixed on the machine base 1 positioned below the rate 7 and supports the pusher plate 7 so as to be able to advance and retreat.
- an injection motor 19 or the like as a drive source is configured to advance the screw 5 together with the pusher plate 7 and perform an injection process.
- the nut body 9 of the ball screw mechanism 10 is provided integrally with the heating cylinder mounting bracket 6.
- the injection motor 19 is provided integrally with the pusher plate 7.
- the pusher plate 7 is provided with a bearing 12 which is a bearing that rotatably supports the ball screw shaft 8.
- a cylindrical sleeve 13 disposed between the bearing 12 and the ball screw shaft 8 is fitted to the outer periphery of the ball screw shaft 10, so that the sleeve 13 is not detached from the ball screw shaft 10.
- the lock nut 14 is screwed to prevent it from coming off.
- ⁇ 13A is formed at one end of the sleeve 13.
- a pulley 15 that is rotated by an injection motor as a drive source is bolted to the flange portion 13A by a fixing bolt 16 that is a fixing means.
- a fixing means including a wedge 17 and a screw 18 is provided between the pulley 15 and the ball screw shaft 8.
- the wedge 17 is pressed against the ball screw shaft 8 by rotating the screw 18, whereby the pulley 15 is fixed to the ball screw shaft 8.
- a ball screw mechanism 10 including a ball screw shaft 8 provided rotatably and a nut body 9 screwed to the ball screw shaft 8 and fixed to the heating cylinder mounting bracket 6; Injection having a bearing 12 as a bearing for supporting the ball screw shaft 8 and a pusher plate 7 which is mounted and can move forward and backward as the ball screw shaft 8 is rotated when performing the injection process.
- a molding machine that is fitted to the outer periphery of the ball screw shaft 8 and that is screwed to the ball screw shaft 8 and a cylindrical sleeve 13 that is disposed between the ball screw shaft 8 and the bearing 12.
- the pulley 15 that transmits the driving force to the ball screw shaft 8 has to be fixed to the ball screw shaft 8 via the sleeve 13.
- the driving force of the pulley 15 transmitted from the injection motor 19 can be reliably transmitted to the ball screw shaft 8.
- the fixing means comprising the wedge 17 and the screw 18 fixes the pulley 15 to the ball screw shaft 8
- the pulley 15 is fixed to the ball screw shaft 8 by fixing through the sleeve 13 and the wedge 17. It is fixed by two different means, each of which is fixed by a fixing means comprising a screw 18. Therefore, it is possible to reliably transmit the drive to the ball screw shaft 8 that is operated when performing the injection process.
- the pusher plate 7 is engaged with the guide rail 11, when the pusher plate 7 is moved forward and backward, it is possible to improve vibration isolation in addition to preventing the displacement of the track, and transmitting the driving force. Therefore, it is possible to prevent loosening of parts that are fixed.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
Provided is an injection molding machine whereby drive can be reliably transmitted to a ball screw shaft driven during execution of an injection step. An injection molding machine provided with: a ball screw mechanism (10) comprising a ball screw shaft (8) provided so as to be able to rotate, and a nut body (9) screwed onto the ball screw shaft; a bearing (12) for supporting the ball screw shaft (8); and a pusher plate (7) to which the bearing (12) is mounted, the pusher plate (7) being able to advance and retreat, and the pusher plate (7) being advanced in conjunction with the rotation of the ball screw shaft (8) when an injection step is performed; there being provided: a cylindrical sleeve (13) fitted on an external periphery of the ball screw shaft (8) and disposed between the ball screw shaft (8) and the bearing (12); a lock nut (14) for preventing the sleeve (13) fitted on the external periphery of the ball screw shaft (8) from coming off, the lock nut (14) being screwed onto the ball screw shaft (8); and a pulley (15) mounted to the sleeve (13).
Description
本発明は、加熱シリンダで溶融された熱可塑性樹脂を、射出ノズルから型閉された金型のキャビティに射出する射出成形機に関する。特に射出ノズルから熱可塑性樹脂を射出するため、ボールネジ軸に螺合されたナット体を動作させるとき、当該ナット体を動作するための駆動の伝達を確実に行えるようにした射出成形機に関する。
The present invention relates to an injection molding machine that injects a thermoplastic resin melted in a heating cylinder into a mold cavity closed from an injection nozzle. More particularly, the present invention relates to an injection molding machine that can reliably transmit drive for operating a nut body screwed to a ball screw shaft to inject a thermoplastic resin from an injection nozzle.
従来の一般的な射出成形機においては、ボールネジ軸とナット体からなる回転運動を直線運度に変換するボールネジ機構等が備えられており、モータの駆動によりボールネジ軸が回転されると、それに伴いナット体が前進又は後退される。ナット体の前進動作に従って、ボールネジ軸が前進されると、それに伴い加熱シリンダ内に設けられたスクリューが前進され、加熱シリンダ先端に装着された射出ノズルから、型閉された金型のキャビティに、加熱シリンダ内で溶融された熱可塑性樹脂が射出充填される。こうした技術に係るものとして、例えば特許文献１には、ボールねじ軸の後端側に位置するシャフト部を、該シャフト部に固着された円筒支持体を介し、プッシャープレートに固着された第１軸受により支持し、プッシャープレートに一体的に設けられた加熱筒内のスクリューを前進させることで射出工程を行う射出成形機が開示されている。また、特許文献２には、フロントプレートとプッシャープレートとを備えた２プレート方式の射出装置において、ベアリング、スリーブを介して、フロントプレートにボールネジの前端部を取り付けると共に、当該ボールネジの後部をプッシャープレートに設けたボールナットに螺合し、射出用モータによりボールネジを回動させることにより、プッシャープレートを前進させ射出工程を行うことが開示されている。
A conventional general injection molding machine is provided with a ball screw mechanism or the like that converts a rotational motion composed of a ball screw shaft and a nut body into a linear drive, and when the ball screw shaft is rotated by driving a motor, The nut body is moved forward or backward. When the ball screw shaft is advanced in accordance with the forward movement of the nut body, the screw provided in the heating cylinder is advanced along with it, and from the injection nozzle attached to the tip of the heating cylinder to the cavity of the closed mold. The thermoplastic resin melted in the heating cylinder is injected and filled. For example, Patent Document 1 discloses a first bearing in which a shaft portion positioned on the rear end side of a ball screw shaft is fixed to a pusher plate via a cylindrical support fixed to the shaft portion. An injection molding machine is disclosed that performs an injection process by advancing a screw in a heating cylinder that is integrally supported on a pusher plate. Further, in Patent Document 2, in a two-plate type injection device including a front plate and a pusher plate, a front end portion of a ball screw is attached to the front plate via a bearing and a sleeve, and a rear portion of the ball screw is attached to a pusher plate. It is disclosed that the pusher plate is moved forward to perform the injection process by screwing into a ball nut provided on the head and rotating the ball screw by an injection motor.
ボールネジ軸と該ボールネジ軸に螺合されたナット体とからなるボールネジ機構により、回転運動を直線運動に変換して、スクリューを前進させる公知の射出成形機においては、例えば特許文献１に示すように、ボールネジ軸と軸受との間にスリーブと称される円筒支持体を配設したものが知られている。当該円筒支持体は、ボールネジ軸に嵌合されるなどして固着されるのだが、固着された円筒支持体が何らかの要因により緩んだりすると、ボールネジ軸に対する駆動の伝達に悪影響を及ぼすことになる。そこで、駆動力の伝達される円筒支持体等の部品が緩むことがないよう確実に締結することが求められる。
In a known injection molding machine in which a rotary motion is converted into a linear motion by a ball screw mechanism including a ball screw shaft and a nut body screwed to the ball screw shaft, and the screw is advanced, for example, as shown in Patent Document 1 In addition, there is known one in which a cylindrical support called a sleeve is disposed between a ball screw shaft and a bearing. The cylindrical support is fixed by being fitted to the ball screw shaft or the like. However, if the fixed cylindrical support is loosened for some reason, the drive transmission to the ball screw shaft is adversely affected. Therefore, it is required to securely fasten parts such as a cylindrical support to which the driving force is transmitted so as not to loosen.
本発明は、上記課題に鑑みてなされたものであり、射出工程を実行するときに駆動されるボールネジ軸への駆動伝達を確実に行えるようにした射出成形機を提供することを目的とする。
The present invention has been made in view of the above problems, and an object of the present invention is to provide an injection molding machine that can reliably transmit drive to a ball screw shaft that is driven when an injection process is executed.
本射出成形機の発明は、回転自在に設けられたボールネジ軸と該ボールネジ軸に螺合されたナット体とからなるボールネジ機構と、前記ボールネジ軸を支持する軸受と、該軸受が装着され、射出工程を行うときに前記ボールネジ軸が回転されるのに従い前進される進退自在なプッシャープレートと、を備えた射出成形機であって、前記ボールネジ軸の外周に嵌合されると共に、該ボールネジ軸と前記軸受との間に配置された筒状のスリーブと、前記ボールネジ軸に螺合され、前記ボールネジ軸の外周に嵌合された前記スリーブの抜け止めを行うロックナットと、前記スリーブに装着されたプーリと、を備えたことを特徴とする。
The invention of this injection molding machine includes a ball screw mechanism comprising a ball screw shaft that is rotatably provided and a nut body screwed to the ball screw shaft, a bearing that supports the ball screw shaft, and the bearing that is mounted. An injection molding machine comprising a pusher plate that is movable forward and backward as the ball screw shaft is rotated when performing a process, and is fitted to the outer periphery of the ball screw shaft, and the ball screw shaft A cylindrical sleeve disposed between the bearing, a lock nut that is screwed onto the ball screw shaft and prevents the sleeve fitted to the outer periphery of the ball screw shaft, and is attached to the sleeve And a pulley.
本射出成形機の発明は、前記ボールネジ軸と前記プーリとの間に設けた楔と、回転することにより前記楔を前記ボールネジ軸に押し付け、該ボールネジ軸に対し前記プーリを固着する螺子と、からなる固定手段を備えたことを特徴とする。
The invention of the present injection molding machine comprises: a wedge provided between the ball screw shaft and the pulley; and a screw that presses the wedge against the ball screw shaft by rotation and fixes the pulley to the ball screw shaft. The fixing means is provided.
本射出成形機の発明は、前記プッシャープレートは、その下方に設けられたガイドレールに係合され、進退自在に支持されていることを特徴とする。
The invention of the present injection molding machine is characterized in that the pusher plate is engaged with a guide rail provided under the pusher plate and is supported so as to freely advance and retract.
本発明によれば、ボールネジ軸に螺合したロックナットにより、ボールネジ軸の外周に嵌合されたスリーブが抜けてしまわぬよう固定し、スリーブとボールネジ軸とを一体に固定した状態で、スリーブに対しプーリを装着することにより、ボールネジに対しプーリを固定する。これにより、例えばスペースや強度上の問題など制約的な状況が生じてしまい、ボールネジ軸に駆動力を伝達するプーリは、スリーブを介してボールネジ軸に固定しなければならなくなったとしても、プーリの駆動力をボールネジ軸に確実に伝達することが可能となる。
According to the present invention, the lock nut screwed to the ball screw shaft is fixed so that the sleeve fitted to the outer periphery of the ball screw shaft does not come off, and the sleeve and the ball screw shaft are fixed integrally with the sleeve. The pulley is fixed to the ball screw by attaching the pulley. As a result, for example, a constraining situation such as space and strength problems arises. Even if the pulley that transmits the driving force to the ball screw shaft has to be fixed to the ball screw shaft via the sleeve, the pulley It becomes possible to reliably transmit the driving force to the ball screw shaft.
さらに、楔と螺子とからなる固定手段は、ボールネジ軸に対しプーリを固着することから、ボールネジ軸へのプーリの固定は、スリーブを介しての固定と、前記固定手段による固定との、それぞれ異なる２つの手段により固定される。よって、射出工程を実行するときに動作されるボールネジ軸への駆動の伝達を確実に行うことが可能となる。
Furthermore, since the fixing means including the wedge and the screw fixes the pulley to the ball screw shaft, the pulley is fixed to the ball screw shaft by fixing the sleeve via the sleeve and fixing by the fixing device. It is fixed by two means. Therefore, it is possible to reliably transmit the drive to the ball screw shaft that is operated when the injection process is executed.
さらに、プッシャープレートはガイドレールに係合されていることから、プッシャープレートが進退移動されるときに、軌道のずれ防止に加え防振性を向上することが可能となり、固定された部品の緩みを防止することができる。
In addition, since the pusher plate is engaged with the guide rail, when the pusher plate is moved forward and backward, it is possible to improve vibration proofing in addition to preventing the displacement of the track, and to loosen the fixed parts. Can be prevented.
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、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。
Hereinafter, embodiments of the present invention will be described with reference to FIGS. Of course, it goes without saying that the present invention can be easily applied to configurations other than those described in the embodiments without departing from the spirit of the invention.
本発明の一例の射出成形機は、粒状の熱可塑性樹脂としてのペレットを原料として成形体を製造するものである。射出成形機には機台１を備え、機台１上には、型閉された金型のキャビティへ熱可塑性樹脂を射出充填する射出ユニット２と、型開閉を行う型締ユニット（図示せず）とを備える。
An example of the injection molding machine of the present invention is to manufacture a molded body using pellets as a granular thermoplastic resin as a raw material. The injection molding machine includes a machine base 1 on which an injection unit 2 for injecting and filling a thermoplastic resin into a mold cavity closed with a mold and a mold clamping unit (not shown) for opening and closing the mold. ).
図１及び図２に示すように、射出ユニット１には、筒型の加熱シリンダ３、加熱シリンダ３の先端に設けた射出ノズル４、加熱シリンダ３内に設けられ当該加熱シリンダ３内に供給された熱可塑性樹脂を混練するスクリュー５、加熱シリンダ３を支持する加熱シリンダ取付ブラケット６、スクリュー５を回転自在に支持すると共に前記加熱シリンダ取付ブラケット６に対して進退移動する、加熱シリンダ取付ブラケット６の後方に設けられたプッシャープレート７、該プッシャープレート７と加熱シリンダ取付ブラケット６とに回転自在に支持されたボールネジ軸８と、該ボールネジ軸８に螺合され前記加熱シリンダ取付ブラケット６に固定されたナット体９とからなるボールネジ機構１０、加熱シリンダ取付ブラケット６及びプッシャープレート７の下方に位置する機台１の上に固定され、プッシャープレート７を進退自在に支持するガイドレール１１、加熱シリンダ３内で溶融された樹脂を金型のキャビティに射出するときに、ボールネジ軸８の回転駆動により、プッシャープレート７と共にスクリュー５を前進させ射出工程を行う、駆動源としての射出用モータ１９等が構成されている。
As shown in FIGS. 1 and 2, the injection unit 1 is provided with a cylindrical heating cylinder 3, an injection nozzle 4 provided at the tip of the heating cylinder 3, and provided in the heating cylinder 3 and supplied to the heating cylinder 3. A screw 5 for kneading the thermoplastic resin, a heating cylinder mounting bracket 6 for supporting the heating cylinder 3, and a heating cylinder mounting bracket 6 that supports the screw 5 rotatably and moves forward and backward with respect to the heating cylinder mounting bracket 6. A pusher plate 7 provided at the rear, a ball screw shaft 8 rotatably supported by the pusher plate 7 and the heating cylinder mounting bracket 6, and screwed to the ball screw shaft 8 and fixed to the heating cylinder mounting bracket 6. A ball screw mechanism 10 including a nut body 9, a heating cylinder mounting bracket 6, and a pusher When the resin melted in the heating cylinder 3 is injected into the cavity of the mold, the ball screw is fixed on the machine base 1 positioned below the rate 7 and supports the pusher plate 7 so as to be able to advance and retreat. By driving the shaft 8 to rotate, an injection motor 19 or the like as a drive source is configured to advance the screw 5 together with the pusher plate 7 and perform an injection process.
ボールネジ機構１０のナット体９は、加熱シリンダ取付ブラケット６に対し一体に設けられている。また、射出用モータ１９は、プッシャープレート７に一体に設けられている。
The nut body 9 of the ball screw mechanism 10 is provided integrally with the heating cylinder mounting bracket 6. The injection motor 19 is provided integrally with the pusher plate 7.
プッシャープレート７には、ボールネジ軸８を回転自在に支持する軸受たるベアリング１２が装着されている。ベアリング１２とボールネジ軸８との間に配置された円筒体たるスリーブ１３は、ボールネジ軸１０の外周に嵌合され、当該ボールネジ軸１０からスリーブ１３が離脱しないよう、ボールネジ軸１０の端部側に螺合されたロックナット１４で抜け止めされている。
The pusher plate 7 is provided with a bearing 12 which is a bearing that rotatably supports the ball screw shaft 8. A cylindrical sleeve 13 disposed between the bearing 12 and the ball screw shaft 8 is fitted to the outer periphery of the ball screw shaft 10, so that the sleeve 13 is not detached from the ball screw shaft 10. The lock nut 14 is screwed to prevent it from coming off.
また、スリーブ１３の一方端には、鍔部１３Ａが形成されている。該鍔部１３Ａには、射出用モータを駆動源として回転されるプーリ１５が固定手段たる固定ボルト１６によりボルト止めされている。
鍔 13A is formed at one end of the sleeve 13. A pulley 15 that is rotated by an injection motor as a drive source is bolted to the flange portion 13A by a fixing bolt 16 that is a fixing means.
また、プーリ１５とボールネジ軸８との間には、楔１７と螺子１８とからなる固定手段が設けられている。該楔１７は、螺子１８を回転させることによりボールネジ軸８に押し付けられ、それにより、当該ボールネジ軸８に対しプーリ１５が固着されている。
Further, a fixing means including a wedge 17 and a screw 18 is provided between the pulley 15 and the ball screw shaft 8. The wedge 17 is pressed against the ball screw shaft 8 by rotating the screw 18, whereby the pulley 15 is fixed to the ball screw shaft 8.
以上のような射出成型機によれば、回転自在に設けられたボールネジ軸８と該ボールネジ軸８に螺合され前記加熱シリンダ取付ブラケット６に固定されたナット体９とからなるボールネジ機構１０と、ボールネジ軸８を支持する軸受たるベアリング１２と、該ベアリング１２が装着され、射出工程を行うときに前記ボールネジ軸８が回転されるのに従い前進される進退自在なプッシャープレート７と、を備えた射出成形機であって、ボールネジ軸８の外周に嵌合されると共に、該ボールネジ軸８と前記ベアリング１２との間に配置された筒状のスリーブ１３と、ボールネジ軸８に螺合され、前記ボールネジ軸８の外周に嵌合された前記スリーブ１３の抜け止めを行うロックナット１４と、スリーブ１３に装着されたプーリ１５と、プーリ１５を回転駆動する駆動源としての射出用モータと、を備える。すなわち、ボールネジ軸８に螺合したロックナット１４により、ボールネジ軸８の外周に嵌合されたスリーブ１３が抜けてしまわぬよう固定し、スリーブ１３とボールネジ軸８とを一体に固定した状態で、スリーブ１３に対しプーリ１５を装着することにより、ボールネジに対しプーリ１５を間接的に固定する。これにより、例えばスペースや強度上の問題など制約的な状況が生じてしまい、ボールネジ軸８に駆動力を伝達するプーリ１５は、スリーブ１３を介してボールネジ軸８に固定しなければならなくなったとしても、射出用モータ１９から伝達されたプーリ１５の駆動力をボールネジ軸８に確実に伝達することが可能となる。
According to the injection molding machine as described above, a ball screw mechanism 10 including a ball screw shaft 8 provided rotatably and a nut body 9 screwed to the ball screw shaft 8 and fixed to the heating cylinder mounting bracket 6; Injection having a bearing 12 as a bearing for supporting the ball screw shaft 8 and a pusher plate 7 which is mounted and can move forward and backward as the ball screw shaft 8 is rotated when performing the injection process. A molding machine that is fitted to the outer periphery of the ball screw shaft 8 and that is screwed to the ball screw shaft 8 and a cylindrical sleeve 13 that is disposed between the ball screw shaft 8 and the bearing 12. A lock nut 14 for preventing the sleeve 13 fitted to the outer periphery of the shaft 8 from being removed, a pulley 15 attached to the sleeve 13, and the pulley 1 The and a injection motor as a driving source for driving rotation. That is, the lock nut 14 screwed to the ball screw shaft 8 is fixed so that the sleeve 13 fitted to the outer periphery of the ball screw shaft 8 does not come off, and the sleeve 13 and the ball screw shaft 8 are fixed integrally. By attaching the pulley 15 to the sleeve 13, the pulley 15 is indirectly fixed to the ball screw. As a result, for example, a constraining situation such as space and strength problems occurs, and the pulley 15 that transmits the driving force to the ball screw shaft 8 has to be fixed to the ball screw shaft 8 via the sleeve 13. In addition, the driving force of the pulley 15 transmitted from the injection motor 19 can be reliably transmitted to the ball screw shaft 8.
さらに、楔１７と螺子１８とからなる固定手段は、ボールネジ軸８に対しプーリ１５を固着することから、ボールネジ軸８へのプーリ１５の固定は、スリーブ１３を介しての固定と、楔１７と螺子１８とからなる固定手段による固定との、それぞれ異なる２つの手段により固定される。よって、射出工程を実行するときに動作されるボールネジ軸８への駆動の伝達を確実に行うことが可能となる。
Further, since the fixing means comprising the wedge 17 and the screw 18 fixes the pulley 15 to the ball screw shaft 8, the pulley 15 is fixed to the ball screw shaft 8 by fixing through the sleeve 13 and the wedge 17. It is fixed by two different means, each of which is fixed by a fixing means comprising a screw 18. Therefore, it is possible to reliably transmit the drive to the ball screw shaft 8 that is operated when performing the injection process.
さらに、プッシャープレート７はガイドレール１１に係合されていることから、プッシャープレート７が進退移動されるときに、軌道のずれ防止に加え防振性を向上することが可能となり、駆動力の伝達のため固定等されている部品の緩みを防止することができる。
Furthermore, since the pusher plate 7 is engaged with the guide rail 11, when the pusher plate 7 is moved forward and backward, it is possible to improve vibration isolation in addition to preventing the displacement of the track, and transmitting the driving force. Therefore, it is possible to prevent loosening of parts that are fixed.
１ 機台
２ 射出ユニット
３ 加熱シリンダ
４ 射出ノズル
５ スクリュー
６ 加熱シリンダ取付ブラケット
７ プッシャープレート
８ ボールネジ軸
９ ナット体
１０ ボールネジ機構
１１ ガイドレール
１２ ベアリング（軸受）
１３ スリーブ
１３Ａ 鍔部
１４ ロックナット
１５ プーリ
１６ 固定ボルト
１７ 楔
１８ 螺子
１９ 射出用モータ DESCRIPTION OF SYMBOLS 1 Machine stand 2Injection unit 3 Heating cylinder 4 Injection nozzle 5 Screw 6 Heating cylinder mounting bracket 7 Pusher plate 8 Ball screw shaft 9 Nut body 10 Ball screw mechanism 11 Guide rail 12 Bearing (bearing)
13 Sleeve 13A collar 14 Lock nut 15 Pulley 16 Fixing bolt 17 Wedge 18 Screw 19 Motor for injection
２ 射出ユニット
３ 加熱シリンダ
４ 射出ノズル
５ スクリュー
６ 加熱シリンダ取付ブラケット
７ プッシャープレート
８ ボールネジ軸
９ ナット体
１０ ボールネジ機構
１１ ガイドレール
１２ ベアリング（軸受）
１３ スリーブ
１３Ａ 鍔部
１４ ロックナット
１５ プーリ
１６ 固定ボルト
１７ 楔
１８ 螺子
１９ 射出用モータ DESCRIPTION OF SYMBOLS 1 Machine stand 2
13
Claims (3)
- 回転自在に設けられたボールネジ軸と該ボールネジ軸に螺合されたナット体とからなるボールネジ機構と、
前記ボールネジ軸を支持する軸受と、
該軸受が装着され、射出工程を行うときに前記ボールネジ軸が回転されるのに従い前進される進退自在なプッシャープレートと、を備えた射出成形機であって、
前記ボールネジ軸の外周に嵌合されると共に、該ボールネジ軸と前記軸受との間に配置された筒状のスリーブと、
前記ボールネジ軸に螺合され、前記ボールネジ軸の外周に嵌合された前記スリーブの抜け止めを行うロックナットと、
前記スリーブに装着されたプーリと、を備えたことを特徴とする射出成形機。 A ball screw mechanism including a ball screw shaft provided rotatably and a nut body screwed to the ball screw shaft;
A bearing for supporting the ball screw shaft;
An injection molding machine comprising: a pusher plate which is movable forward and backward as the ball screw shaft is rotated when the bearing is mounted and performing an injection process;
A cylindrical sleeve that is fitted to the outer periphery of the ball screw shaft and disposed between the ball screw shaft and the bearing;
A lock nut that is screwed onto the ball screw shaft and prevents the sleeve fitted to the outer periphery of the ball screw shaft;
An injection molding machine comprising: a pulley mounted on the sleeve. - 前記ボールネジ軸と前記プーリとの間に設けた楔と、回転することにより前記楔を前記ボールネジ軸に押し付け、該ボールネジ軸に対し前記プーリを固着する螺子と、からなる固定手段を備えたことを特徴とする請求項１に記載の射出成形機。 A fixing means comprising: a wedge provided between the ball screw shaft and the pulley; and a screw for rotating the wedge against the ball screw shaft by rotation and fixing the pulley to the ball screw shaft. The injection molding machine according to claim 1, characterized in that:
- 前記プッシャープレートは、その下方に設けられたガイドレールに係合され、進退自在に支持されていることを特徴とする請求項１又は２に記載の射出成形機。 The injection molding machine according to claim 1 or 2, wherein the pusher plate is engaged with a guide rail provided below the pusher plate and is supported so as to freely advance and retreat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201480046033.8A CN105682882B (en) | 2013-08-21 | 2014-08-18 | A kind of injection moulding machine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-171365 | 2013-08-21 | ||
| JP2013171365A JP6232600B2 (en) | 2013-08-21 | 2013-08-21 | Injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2015025806A1 true WO2015025806A1 (en) | 2015-02-26 |
Family
ID=52483582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2014/071527 WO2015025806A1 (en) | 2013-08-21 | 2014-08-18 | Injection molding machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6232600B2 (en) |
| CN (1) | CN105682882B (en) |
| WO (1) | WO2015025806A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3222401A1 (en) * | 2016-03-24 | 2017-09-27 | Sumitomo Heavy Industries, Ltd. | Injection molding machine |
| CN108773036A (en) * | 2018-06-27 | 2018-11-09 | 东华机械有限公司 | The electronic She Tai mechanisms of double lead injection |
| CN113997500A (en) * | 2021-10-26 | 2022-02-01 | 博创智能装备股份有限公司 | Injection molding direct-drive glue injection structure |
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| JPH1034714A (en) * | 1996-07-29 | 1998-02-10 | Fanuc Ltd | Injection unit for injection molding machine |
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| JP2006231625A (en) * | 2005-02-23 | 2006-09-07 | Sumitomo Heavy Ind Ltd | Injection device |
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| CN102829144A (en) * | 2012-08-29 | 2012-12-19 | 大连华根机械有限公司 | Conveniently mounted and adjusted high-precision ball screw supporting structure |
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- 2013-08-21 JP JP2013171365A patent/JP6232600B2/en not_active Expired - Fee Related
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- 2014-08-18 WO PCT/JP2014/071527 patent/WO2015025806A1/en active Application Filing
- 2014-08-18 CN CN201480046033.8A patent/CN105682882B/en not_active Expired - Fee Related
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| JPH06134825A (en) * | 1992-10-29 | 1994-05-17 | Meiki Co Ltd | Device for detecting plasticized state of injection molding material |
| JPH1034714A (en) * | 1996-07-29 | 1998-02-10 | Fanuc Ltd | Injection unit for injection molding machine |
| JPH10286842A (en) * | 1997-04-17 | 1998-10-27 | Toyo Mach & Metal Co Ltd | Injection molder |
| JP2006231625A (en) * | 2005-02-23 | 2006-09-07 | Sumitomo Heavy Ind Ltd | Injection device |
| JP2008208733A (en) * | 2007-02-23 | 2008-09-11 | Mitsubishi Electric Corp | Pressure vessel body of refrigerating cycle device and its manufacturing method, and method for connecting pipe to vessel |
| CN102829144A (en) * | 2012-08-29 | 2012-12-19 | 大连华根机械有限公司 | Conveniently mounted and adjusted high-precision ball screw supporting structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3222401A1 (en) * | 2016-03-24 | 2017-09-27 | Sumitomo Heavy Industries, Ltd. | Injection molding machine |
| JP2017170799A (en) * | 2016-03-24 | 2017-09-28 | 住友重機械工業株式会社 | Injection molding machine |
| CN108773036A (en) * | 2018-06-27 | 2018-11-09 | 东华机械有限公司 | The electronic She Tai mechanisms of double lead injection |
| CN113997500A (en) * | 2021-10-26 | 2022-02-01 | 博创智能装备股份有限公司 | Injection molding direct-drive glue injection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6232600B2 (en) | 2017-11-22 |
| CN105682882A (en) | 2016-06-15 |
| JP2015039815A (en) | 2015-03-02 |
| CN105682882B (en) | 2018-07-17 |
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