JPH048210B2 - - Google Patents

Info

Publication number
JPH048210B2
JPH048210B2 JP58233539A JP23353983A JPH048210B2 JP H048210 B2 JPH048210 B2 JP H048210B2 JP 58233539 A JP58233539 A JP 58233539A JP 23353983 A JP23353983 A JP 23353983A JP H048210 B2 JPH048210 B2 JP H048210B2
Authority
JP
Japan
Prior art keywords
mold
nut
screw
clutch
mold clamping
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 - Lifetime
Application number
JP58233539A
Other languages
Japanese (ja)
Other versions
JPS60125619A (en
Inventor
Zenji Inaba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fanuc Corp
Original Assignee
Fanuc Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fanuc Corp filed Critical Fanuc Corp
Priority to JP23353983A priority Critical patent/JPS60125619A/en
Publication of JPS60125619A publication Critical patent/JPS60125619A/en
Publication of JPH048210B2 publication Critical patent/JPH048210B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/64—Mould opening, closing or clamping devices
    • B29C45/66—Mould opening, closing or clamping devices mechanical
    • 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
    • B29C2045/664—Mould opening, closing or clamping devices mechanical using mould clamping means operating independently from the mould closing means
    • 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
    • B29C2045/665—Mould opening, closing or clamping devices mechanical using a screw or screws having differently threaded parts arranged in series

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Producing Shaped Articles From Materials (AREA)
  • Powder Metallurgy (AREA)
  • Transmission Devices (AREA)

Description

【発明の詳細な説明】 産業上の利用分野 本発明は、射出成形機における型締め装置に関
する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a mold clamping device in an injection molding machine.

従来技術 射出成形機の型締め装置は、前固定盤に対し、
可動盤を前後に移動して、前固定盤に取付けられ
た固定側金型と可動盤に対向して取付けられた可
動側金型を当接させ（型閉じ）、ついで両金型を
強く圧接してその状態を維持し（型締め）、金型
に対する樹脂の射出および冷却が完了すると型締
め状態を解除し、さらに、可動側金型を固定側金
型から引き離す（型開き）作動を行う。Conventional technology The mold clamping device of an injection molding machine has a
Move the movable plate back and forth to bring the fixed side mold attached to the front fixed plate into contact with the movable side mold installed opposite to the movable plate (mold closing), and then firmly press both molds together. The state is maintained (mold clamping), and when the injection and cooling of the resin into the mold is completed, the mold clamping state is released, and the movable mold is separated from the stationary mold (mold opening). .

従来、この作動は油圧機構で行われていた。そ
のため、油圧ポンプや弁などを必要とし、構成が
複雑となつていた。また、油圧による型締め工程
を制御しなくてはならないことから、その型締め
速度の制御も複雑で困難であつた。 Traditionally, this operation was performed using a hydraulic mechanism. Therefore, hydraulic pumps, valves, etc. are required, making the configuration complicated. Furthermore, since the mold clamping process using hydraulic pressure must be controlled, controlling the mold clamping speed is also complicated and difficult.

そこで、モータを使用し、モータの回転力をナ
ツト−ネジ系によつて直線運動に変え、型締めを
行わせようとする場合、十分な型締め力を得よう
とすると、モータの馬力を大きくするか、ナツト
−ネジ系におけるネジのピツチを細かくする方法
が考えられる。 Therefore, when using a motor and converting the rotational force of the motor into linear motion using a nut-screw system to perform mold clamping, in order to obtain sufficient mold clamping force, it is necessary to increase the horsepower of the motor. Alternatively, a method of reducing the pitch of the screws in a nut-screw system may be considered.

しかし、モータを大馬力化すれば、金型の開閉
には格別大きな力を必要としないにもかかわら
ず、必要以上に大きな馬力のモータを使用するこ
ととなり、エネルギーのロスや装置全体のコスト
アツプにつながる。また、ネジのピツチを細かく
すると、小型のモータでも大きな型締め力を得ら
れるが金型を開閉するための時間が長くなるの
で、射出成形のサイクルタイムが長くなり高速の
射出成形機を得ることができない。 However, if the motor is made to have a high horsepower, even though opening and closing the mold does not require a particularly large amount of force, a motor with a horsepower larger than necessary will be used, leading to energy loss and an increase in the cost of the entire device. Connect. In addition, if the screw pitch is made finer, a large mold clamping force can be obtained even with a small motor, but the time required to open and close the mold becomes longer, which increases the injection molding cycle time and makes it difficult to obtain a high-speed injection molding machine. I can't.

発明が解決しようとする課題 本発明は、小型モータで型開閉および型締めを
行い、サイクルタイムが短く、かつ、十分な型締
め力が得られる型締め装置の提供を課題とする。Problems to be Solved by the Invention An object of the present invention is to provide a mold clamping device that opens, closes, and clamps the mold using a small motor, has a short cycle time, and can obtain sufficient mold clamping force.

課題を解決するための手段 本発明は、モータの回転をナツト−ネジ系によ
つて直線運動に変えて型締めを行う射出成形機の
型締め装置において、上記のナツト−ネジ系を、
ピツチの大きなナツト−ネジ系である型開閉用部
分とピツチの小さなナツト−ネジ系である型締め
用部分で構成し、さらにこれらを選択的に作動さ
せるクラツチからなる切り替え手段を設けて型締
め装置を構成する。Means for Solving the Problems The present invention provides a mold clamping device for an injection molding machine that clamps a mold by converting the rotation of a motor into a linear motion using a nut-screw system.
The mold clamping device consists of a mold opening/closing part that is a nut-screw system with a large pitch and a mold-clamping part that is a nut-screw system with a small pitch, and is further provided with a switching means consisting of a clutch that selectively operates these parts. Configure.

実施例 第１図は、本発明の第１の実施例を示す図で、
符号Ｍはサーボモータで、固定盤５に取り付けら
れており、符号１は伝動装置で、本実施例ではタ
イミングベルトで構成され、上記サーボモータＭ
の回転力をナツト２（ボールナツト）に伝動す
る。このナツト２は固定盤５に軸支されている。Embodiment FIG. 1 is a diagram showing a first embodiment of the present invention.
Reference numeral M indicates a servo motor, which is attached to the fixed platen 5, and reference numeral 1 indicates a transmission device, which in this embodiment is composed of a timing belt.
The rotational force of is transmitted to nut 2 (ball nut). This nut 2 is pivotally supported by a fixed platen 5.

ナツト２はネジ３（ボールネジ）と螺合して型
開閉用のナツト−ネジ系、すなわち、型締め装置
全体のナツト−ネジ系の型開閉用部分を構成して
いる。ネジ３は前端を可動盤６に軸支され、後部
が固定盤５にこれを貫通して軸支されている。 The nut 2 is screwed together with a screw 3 (ball screw) to constitute a nut-screw system for opening and closing the mold, that is, a part of the nut-screw system for opening and closing the mold of the entire mold clamping device. The front end of the screw 3 is pivotally supported by a movable platen 6, and the rear end is pivotally supported by a fixed platen 5 passing therethrough.

また、上記ナツト２の外周には型締め用ネジ
（ボールネジ）が切られており、これに型締め用
ナツト４（ボールナツト）が螺合し、型締め用ナ
ツト−ネジ系、すなわち型締め部分を形成してい
る。なお、上記型締め用ネジ４のピツチはネジ３
のピツチより細かく形成されている。 In addition, a mold clamping screw (ball screw) is cut on the outer periphery of the nut 2, and a mold clamping nut 4 (ball nut) is screwed into this to complete the mold clamping nut-screw system, that is, the mold clamping part. is forming. In addition, the pitch of the mold clamping screw 4 is the same as the screw 3.
It is formed more finely than the pitch.

符号Ｃ２は第２のクラツチで、上記の型締め用
ナツト４を固定盤５に結合してナツト４の回動を
阻止したり、この結合を解除してナツト４の回動
を許容したりすることができる。符号８は固定盤
５に取付けられた第１のスラスト軸受けで、該ス
ラスト軸受け８に形成された突部９と上記ナツト
２に形成された凹部１０が係合するようになつて
いる。また、ナツト２と第１スラスト軸受け８間
にはスプリング１１が設けられ、さらにナツト２
と第１スラスト軸受け８の内面は対向するテーパ
ー面に形成されている。このテーパー面の個所に
はテーパー面と係合して、このテーパー面によつ
て第１図におけるネジ３の半径方向に移動できる
ようになつたブレーキシユー１２を有した第３ク
ラツチＣ３が配置されている。 Reference numeral C2 denotes a second clutch, which connects the mold clamping nut 4 to the fixed platen 5 to prevent the nut 4 from rotating, or releases this connection to allow the nut 4 to rotate. be able to. Reference numeral 8 designates a first thrust bearing attached to the fixed platen 5, and a protrusion 9 formed on the thrust bearing 8 and a recess 10 formed on the nut 2 are engaged with each other. Further, a spring 11 is provided between the nut 2 and the first thrust bearing 8, and a spring 11 is provided between the nut 2 and the first thrust bearing 8.
The inner surfaces of the first thrust bearing 8 are formed into opposing tapered surfaces. A third clutch C3 is disposed at the location of this tapered surface and has a brake shoe 12 that engages with the tapered surface and can be moved in the radial direction of the screw 3 in FIG. 1 by means of this tapered surface. has been done.

第３クラツチＣ３は金型が閉じていないとき
は、第１図に示すように、スプリング１１により
ナツト２と第１スラスト軸受け８間が離されてい
るので、第３クラツチＣ３のブレーキシユー１２
はネジ３からは離脱しており、ナツト２とネジ３
間の相対回動が許容されている。符号１５は第２
スラスト軸受けで、可動盤６に取付けられ、可動
盤６とネジ３を連結している。符号Ｃ１は第１ク
ラツチで、該クラツチＣ１はネジ３と可動盤６を
結合してネジ３の回動を阻止したり上記の結合を
解除してネジ３の回動を許容したりすることがで
きる。符号７は、可動盤６に固着された一方の金
型である。 When the third clutch C3 is not closed, the nut 2 and the first thrust bearing 8 are separated by the spring 11 as shown in FIG.
is detached from screw 3, and nut 2 and screw 3
Relative rotation between the two is allowed. Code 15 is the second
It is attached to the movable platen 6 with a thrust bearing, and connects the movable platen 6 and the screw 3. Reference numeral C1 denotes a first clutch, and the clutch C1 can connect the screw 3 and the movable plate 6 to prevent the screw 3 from rotating, or can release the above connection to allow the screw 3 to rotate. can. Reference numeral 7 designates one mold that is fixed to the movable platen 6.

なお、上記のように各クラツチＣ１，Ｃ２，Ｃ
３は、それぞれに独立してナツトまたはネジの回
動を阻止および許容することができるものであ
る。また、符号１３，１４はタイバーである。 In addition, as mentioned above, each clutch C1, C2, C
3 can independently prevent and allow rotation of the nut or screw. Further, reference numerals 13 and 14 are tie bars.

次に、上記実施例の作用について述べる。 Next, the operation of the above embodiment will be described.

第１図の状態は、金型７が後退位置にある状態
を表している。そこで、型締め工程が開始される
と、まず、第１クラツチＣ１が作動してネジ３が
可動盤６へ結合され、回動が阻止される。 The state shown in FIG. 1 represents the state in which the mold 7 is in the retracted position. Therefore, when the mold clamping process is started, first the first clutch C1 is operated to couple the screw 3 to the movable platen 6, thereby preventing its rotation.

他のクラツチＣ２，Ｃ３は非作動状態にある。 The other clutches C2 and C3 are inactive.

そして、サーボモータＭが駆動され、伝動装置
１を介してナツト２が回動される。その結果ネジ
３はネジに沿つて前進し、可動盤６および金型７
を第１図上方に移動させる。この場合、ナツト−
ネジ系の型開閉用部分であるネジ３のピツチは大
きく形成されているから、可動盤６および金型７
は早いスピードで前進することとなる。 Then, the servo motor M is driven, and the nut 2 is rotated via the transmission device 1. As a result, the screw 3 moves forward along the screw, causing the movable platen 6 and the mold 7 to move forward.
Move it upwards in Figure 1. In this case, Natto
Since the pitch of the screw 3, which is the mold opening/closing part of the screw system, is formed large, the movable platen 6 and the mold 7
will move forward at a fast speed.

次に、金型７が他方の金型に当接し、金型が閉
じるとネジ３の前進は阻止される。すると、その
反力のためナツト２はスプリング１１の力に抗し
て第１図中下方へ移動し、内部に形成されたテー
パー面により第３クラツチＣ３が作動する。この
結果ブレーキシユー１２はネジ３に押し付けら
れ、ネジ３とナツト２の相対回動が自動的に阻止
される（セルフロツク）。 Next, the mold 7 comes into contact with the other mold, and when the mold is closed, the screw 3 is prevented from advancing. Then, due to the reaction force, the nut 2 moves downward in FIG. 1 against the force of the spring 11, and the third clutch C3 is actuated by the tapered surface formed inside. As a result, the brake shoe 12 is pressed against the screw 3, and relative rotation between the screw 3 and the nut 2 is automatically prevented (self-locking).

一方、金型７が閉じたとき、第１クラツチＣ１
は非作動とされ、第２クラツチＣ２は作動とされ
る。したがつて、サーボモータＭの回転力は伝動
機構１を介して、第３クラツチＣ３でネジ３と一
体的に結合されているナツト２を回動する。ま
た、第２クラツチＣ２の作動により、型締め用ナ
ツト４は固定盤側に結合されるから、ナツト２は
その外周に切られた型締め用ネジによる螺合で型
締め用ナツト４に押されて第１図上方へ移動され
る。すなわち、上記のナツト２に第３クラツチＣ
３で結合されたネジ３は上方へ移動し、可動盤６
を前進させ、金型７を他方の金型へ強く押し付
け、型締めを行う。 On the other hand, when the mold 7 is closed, the first clutch C1
is deactivated, and the second clutch C2 is activated. Therefore, the rotational force of the servo motor M, via the transmission mechanism 1, rotates the nut 2, which is integrally connected to the screw 3 by the third clutch C3. In addition, since the mold clamping nut 4 is coupled to the fixed platen side by the operation of the second clutch C2, the nut 2 is pushed onto the mold clamping nut 4 by screwing with the mold clamping screw cut on its outer periphery. is moved upward in Figure 1. That is, the third clutch C is attached to the nut 2 above.
The screw 3 connected by 3 moves upward, and the movable platen 6
is moved forward, and the mold 7 is strongly pressed against the other mold to perform mold clamping.

この場合、ナツト−ネジ系の型締め用部分であ
るナツト２の外周に切られた型締め用ネジのピツ
チは小さく形成されているためナツト２、ネジ３
可動盤６および金型７の移動は遅いが、大きな力
を得ることができ、大きな型締め力を供給するこ
とができる。 In this case, since the pitch of the mold clamping screw cut on the outer periphery of the nut 2, which is the mold clamping part of the nut-screw system, is formed small, the nut 2 and the screw 3
Although the movable platen 6 and the mold 7 move slowly, a large force can be obtained and a large mold clamping force can be supplied.

以上、型開きの状態から型閉じ、型締めの状態
に至る作動について述べたが、型締めの状態か
ら、型締めの解除、型開きに至る作動は上記と逆
になる。 The operations from the mold opening state to the mold closing state to the mold clamping state have been described above, but the operations from the mold clamping state to mold unclamping and mold opening are the reverse of the above.

第２図は、本発明の第２の実施例を示す図で、
符号Ｍはサーボモータ、符号２１は伝動装置で本
実施例ではタイミングベルトを示している。符号
２０はネジ（ボールネジ）で、ネジ２０はピツチ
の大きな部分２０−１とピツチの小さな部分２０
−２を有し、それぞれのネジに螺合するナツトＮ
４，Ｎ５によりそれぞれ、ピツチが大きなナツト
−ネジ系である型開閉用部分とピツチが小さなナ
ツト−ネジ系である型締め用部分を構成し、全体
として一つのナツト−ネジ系を構成している。 FIG. 2 is a diagram showing a second embodiment of the present invention,
Reference numeral M indicates a servo motor, and reference numeral 21 indicates a transmission device, which in this embodiment is a timing belt. Reference numeral 20 is a screw (ball screw), and the screw 20 has a large pitch part 20-1 and a small pitch part 20.
-2 and screwed into each screw N
4. N5 constitutes a mold opening/closing part with a large pitch nut-screw system and a mold closing part with a small pitch nut-screw system, making up one nut-screw system as a whole. .

符号２２は可動盤で、金型２４が固着されてい
る。 Reference numeral 22 is a movable platen, to which a mold 24 is fixed.

また、可動盤２２には上記ネジ２０と平行に杆
２５が固着されており、該杆２５にはクラツチＣ
４，Ｃ５が固着されている。該クラツチＣ４，Ｃ
５はそれぞれ上記のナツトＮ４，Ｎ５を組み込ん
だ構造とされ、これらナツトＮ４，Ｎ５の回動を
阻止したり、許容したりできるようになつてい
る。符号２３は固定盤、符号２６，２７はタイバ
ーである。 Further, a rod 25 is fixed to the movable platen 22 in parallel with the screw 20, and a clutch C is attached to the rod 25.
4, C5 is fixed. The clutch C4,C
Nuts 5 and 5 each have a structure that incorporates the nuts N4 and N5 described above, and can prevent or allow rotation of these nuts N4 and N5. Reference numeral 23 is a fixed plate, and reference numerals 26 and 27 are tie bars.

上記構成において、まず、クラツチＣ４を動作
させてナツト４の回動を阻止し、クラツチＣ５を
非作動状態にし、ナツトトＮ５は回動を許容し
て、サーボモータＭを駆動する。すると、ネジ２
０の回動にともなつて、ナツトＮ５は空転する
が、ナツトＮ４はネジ２０によつて移動される。
このため杆２５はクラツチＣ４と一体に移動す
る。この移動はネジ２０のピツチが大きい部分２
０−１のネジに沿う移動なので、杆２５、可動盤
２２、金型２４を第２図右方向へ早い速度で移動
させる。 In the above configuration, first, the clutch C4 is operated to prevent the nut 4 from rotating, the clutch C5 is put into a non-operating state, and the nut N5 is allowed to rotate and drives the servo motor M. Then screw 2
As the nut N5 rotates, the nut N5 idles, but the nut N4 is moved by the screw 20.
Therefore, the rod 25 moves together with the clutch C4. This movement is performed at the part 2 where the pitch of the screw 20 is large.
Since the movement is along the 0-1 screw, the rod 25, movable platen 22, and mold 24 are moved rightward in FIG. 2 at a fast speed.

次に、金型２４が他方の金型と当接して金型が
閉じた位置にきたとき、クラツチＣ４を非作動と
しクラツチＣ５を作動すると、上記と逆にナツト
Ｎ４が空転し、ナツトＮ５の回動が阻止されて杆
２５、可動盤２２、金型２４はネジ２０のピツチ
が小さな部分２０−２のネジに沿つて低速度で第
２図において右方へ移動し、金型２４を他方の金
型へ強く押し付け、型締めを行う。このとき、金
型７の移動量が小さくなるのと反比例的に大きな
型締め力を得ることができる。 Next, when the mold 24 comes into contact with the other mold and the mold is in the closed position, when the clutch C4 is deactivated and the clutch C5 is activated, the nut N4 spins in reverse and the nut N5 Rotation is prevented, and the rod 25, movable platen 22, and mold 24 move at low speed to the right in FIG. Press firmly against the mold and clamp the mold. At this time, a large mold clamping force can be obtained in inverse proportion to the reduction in the amount of movement of the mold 7.

以上、型開きの状態から型閉じ、型締めの状態
に至る作動について述べたが、型締めの状態か
ら、型締めの解除、型開きに至る作動は上記と逆
になる。 The operations from the mold opening state to the mold closing state to the mold clamping state have been described above, but the operations from the mold clamping state to mold unclamping and mold opening are the reverse of the above.

なお、上記実施例では駆動源としてサーボモー
タを使用したが、サーボモータではなく汎用のモ
ータを使用しても良い。この場合には、リミツト
スイツチなどで金型の移動位置を検出しなければ
ならないことは勿論である。 In addition, although a servo motor was used as a drive source in the above embodiment, a general-purpose motor may be used instead of a servo motor. In this case, it goes without saying that the moving position of the mold must be detected using a limit switch or the like.

また、第３クラツチＣ３としてセルフロツクの
ものを用いたがこのクラツチＣ３は金型を閉じた
時に作動する他の構造のものでも良い。 Further, although a self-locking clutch is used as the third clutch C3, this clutch C3 may be of another structure that operates when the mold is closed.

発明の効果 本発明は、モータの回転をネジにより直線運動
に変換し、金型の開閉をピツチの大きな型開閉用
部分によつて早いスピードで行い、金型を閉じた
後の型締めではピツチの小さな型締め用部分によ
つて大きな型締め力を得るようにしたから； 駆動源として使用するモータは小型のモータで
良く、かつ、大きな型締め力を得ることができ
る、 型開閉をピツチの大きな型開閉用部分で行うか
ら、射出成形サイクルタイムを短くすることがで
きる、 ナツト−ネジ系を駆動するモータは１個で良い
から、装置のコストを安くすることができ、ま
た、省エネルギーにもなる。Effects of the Invention The present invention converts the rotation of a motor into linear motion using a screw, opens and closes the mold at a high speed using a large mold opening/closing part of the pitch, and closes the mold after closing the mold with a pitch. This is because a large mold clamping force can be obtained from the small mold clamping part; a small motor can be used as the drive source, and a large mold clamping force can be obtained. The injection molding cycle time can be shortened because a large part is used to open and close the mold.Since only one motor is required to drive the nut-screw system, the cost of the equipment can be reduced, and it can also save energy. Become.

【図面の簡単な説明】[Brief explanation of drawings]

第１図は、本発明の第１の実施例、第２図は、
同第２の実施例を示す図である。 Ｍ……サーボモータ、１……伝動機構、２……
ナツト、３……ネジ、４……型締め用ナツト、Ｃ
１……第１クラツチ、Ｃ２……第２クラツチ、Ｃ
３……第３クラツチ。 FIG. 1 shows a first embodiment of the present invention, and FIG. 2 shows a first embodiment of the present invention.
It is a figure which shows the same 2nd Example. M... Servo motor, 1... Transmission mechanism, 2...
Nut, 3...screw, 4...mold clamping nut, C
1...First clutch, C2...Second clutch, C
3...Third clutch.

Claims (1)

【特許請求の範囲】 １ モータの回転をナツト−ネジ系によつて直線
運動に変えて金型の開閉および型締めを行う射出
成形機の型締め装置であつて、上記のナツト−ネ
ジ系はピツチの大きなナツト−ネジ系である型開
閉用部分とピツチの小さなナツト−ネジ系である
型締め用部分を備えると共に、ナツトまたはネジ
の回動を独立して阻止および許容できるクラツチ
からなる上記型開閉用部分と型締め用部分の作動
を切り替える手段を備えることを特徴とした型締
め装置。 ２ 型締め用部分を構成するナツト−ネジ系は、
型開閉用部分を構成するナツト−ネジ系における
ナツトの外周面に形成された型締め用ネジと、こ
れに螺合するナツトで構成されていることを特徴
とした特許請求の範囲１に記載の型締め装置。 ３ 型締め用部分を構成するナツト−ネジ系は、
型開閉用部分を構成するナツト−ネジ系における
ネジへ直列に連結されたネジと、これに螺合する
ナツトで構成されていることを特徴とした特許請
求の範囲１に記載の型締装置。 ４ 作動を切り替える手段が型開閉用部分におけ
るネジの回動を阻止および許容できる第１のクラ
ツチ、型開閉用部分におけるネジとナツトの相互
回動を阻止および許容できる第２のクラツチ、お
よび型締め用部分におけるナツトの回動を阻止お
よび許容できる第３のクラツチを備えていること
を特徴とした特許請求の範囲２に記載の型締め装
置。 ５ 第２のクラツチが型開閉用部分におけるナツ
トの移動によつて作動し、ネジとナツトの相互回
動を阻止および許容するセルフロツククラツチで
あることを特徴とした特許請求の範囲４に記載の
型締め装置。 ６ モータがサーボモータであることを特徴とし
た特許請求の範囲１〜５のいずれか一つに記載の
型締め装置。[Scope of Claims] 1. A mold clamping device for an injection molding machine that opens and closes a mold and clamps the mold by converting the rotation of a motor into linear motion using a nut-screw system, wherein the nut-screw system is The above-mentioned mold comprises a mold opening/closing part that is a nut-screw system with a large pitch and a mold-clamping part that is a nut-screw system with a small pitch, and a clutch that can independently prevent and allow rotation of the nut or screw. A mold clamping device characterized by comprising means for switching the operation of an opening/closing part and a mold clamping part. 2 The nut-screw system that makes up the mold clamping part is
Claim 1, characterized in that the mold-clamping screw is formed on the outer peripheral surface of a nut in a nut-screw system constituting a mold opening/closing part, and a nut screwed into the mold-clamping screw. Mold clamping device. 3 The nut-screw system that makes up the mold clamping part is
The mold clamping device according to claim 1, comprising a screw connected in series to a screw in a nut-screw system constituting a mold opening/closing part, and a nut screwed into the screw. 4. A first clutch whose operation switching means can prevent and allow rotation of the screw in the mold opening/closing part, a second clutch which can prevent and allow mutual rotation of the screw and nut in the mold opening/closing part, and a mold clamp. 3. The mold clamping device according to claim 2, further comprising a third clutch capable of preventing and allowing rotation of the nut in the holding portion. 5. The method according to claim 4, wherein the second clutch is a self-locking clutch that is actuated by the movement of the nut in the mold opening/closing part and prevents and allows mutual rotation of the screw and the nut. Mold clamping device. 6. The mold clamping device according to any one of claims 1 to 5, wherein the motor is a servo motor.
JP23353983A 1983-12-13 1983-12-13 Clamping device Granted JPS60125619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23353983A JPS60125619A (en) 1983-12-13 1983-12-13 Clamping device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23353983A JPS60125619A (en) 1983-12-13 1983-12-13 Clamping device

Publications (2)

Publication Number Publication Date
JPS60125619A JPS60125619A (en) 1985-07-04
JPH048210B2 true JPH048210B2 (en) 1992-02-14

Family

ID=16956632

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23353983A Granted JPS60125619A (en) 1983-12-13 1983-12-13 Clamping device

Country Status (1)

Country Link
JP (1) JPS60125619A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61193821A (en) * 1985-02-22 1986-08-28 Fanuc Ltd Clamping apparatus of injection molding machine
US4797086A (en) * 1985-11-18 1989-01-10 Sumitomo Heavy Industries Ltd Apparatus clutch controlled closure means for a molding
JP2533486B2 (en) * 1986-04-04 1996-09-11 蛇の目ミシン工業株式会社 Electric press
JPH0622828B2 (en) * 1986-06-30 1994-03-30 フアナツク株式会社 Direct pressure type mold clamping mechanism
JPH0622829B2 (en) * 1986-06-30 1994-03-30 フアナツク株式会社 Direct pressure type mold clamping mechanism
JPS6342826A (en) * 1986-08-11 1988-02-24 Fanuc Ltd Mold clamping device in injection molder
JPS63222831A (en) * 1987-03-13 1988-09-16 Fanuc Ltd Motor driven mold clamping mechanism
JP2552661Y2 (en) * 1989-06-23 1997-10-29 西部電機株式会社 Power transmission device for multiple operating mechanisms that operate alternately
JP2599447Y2 (en) * 1993-05-10 1999-09-06 株式会社椿本チエイン Linear actuator capable of supporting radial loads
DE10015548B4 (en) * 2000-03-30 2009-04-02 Bosch Rexroth Aktiengesellschaft Drive for an injection molding machine, in particular for the closing unit of an injection molding machine
JP5443831B2 (en) * 2009-05-27 2014-03-19 エスエイコーサン株式会社 Casting machine
CN102416460B (en) * 2010-09-28 2015-11-25 青木伸藏 Casting machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS551876A (en) * 1978-06-19 1980-01-09 Kogyo Gijutsuin Method of discriminating city dust and its device
JPS5560293U (en) * 1978-10-14 1980-04-24
JPS5862030A (en) * 1981-10-08 1983-04-13 Nissei Plastics Ind Co Injection molder

Also Published As

Publication number Publication date
JPS60125619A (en) 1985-07-04

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