JPH08112845A - Mold clamping device of injection molding machine - Google Patents
Mold clamping device of injection molding machineInfo
- Publication number
- JPH08112845A JPH08112845A JP27699194A JP27699194A JPH08112845A JP H08112845 A JPH08112845 A JP H08112845A JP 27699194 A JP27699194 A JP 27699194A JP 27699194 A JP27699194 A JP 27699194A JP H08112845 A JPH08112845 A JP H08112845A
- Authority
- JP
- Japan
- Prior art keywords
- movable plate
- mold clamping
- fixed
- clamping device
- parallel
- 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.)
- Pending
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
-
- 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
- B29C2045/1784—Component parts, details or accessories not otherwise provided for; Auxiliary operations not otherwise provided for
- B29C2045/1788—Preventing tilting of movable mould plate during closing or clamping
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は可動盤が固定盤に対して
平行を保って移動および型締を行う射出成形機の型締装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold clamping device for an injection molding machine in which a movable platen moves and molds while being kept parallel to a fixed platen.
【０００２】[0002]
【従来技術】油圧式の型締装置を有する射出成形機は大
型になると、成形機自身の重量および作動油の量を減ら
すため、或いは成形機の組立、部品の加工をし易くする
ため、図７および図８に示すように固定盤１の四隅に一
体的に複数の異なる小型の型締シリンダ６および７を取
付けるとともに、一端を可動盤２に固定した複数個の平
行なタイバー３および４の中途位置に設けたピストン５
を前記型締シリンダ６および７の内径面に摺動可能に嵌
着させて、油圧回路８から型締シリンダ６および７の油
室へ選択的に圧油を供給し、前記タイバー３および４と
ともに可動盤２を進退可能にしている。2. Description of the Related Art When an injection molding machine having a hydraulic mold clamping device becomes large, the weight of the molding machine itself and the amount of hydraulic oil are reduced, or the assembly of the molding machine and the processing of parts are facilitated. As shown in FIG. 7 and FIG. 8, a plurality of different small mold clamping cylinders 6 and 7 are integrally attached to the four corners of the fixed platen 1, and one end of the paralleled tie bars 3 and 4 fixed to the movable platen 2 is fixed. Piston 5 installed in the middle position
Is slidably fitted to the inner diameter surfaces of the mold clamping cylinders 6 and 7 to selectively supply pressure oil from the hydraulic circuit 8 to the oil chambers of the mold clamping cylinders 6 and 7, and together with the tie bars 3 and 4. The movable platen 2 can be moved back and forth.
【０００３】[0003]
【発明が解決しょうとする課題】この様に型締シリンダ
により各タイバーを押引きすることにより可動盤を進退
させる型締装置においては可動盤の背面に機構がないた
め金型取付面に金型を取付けたとき、可動盤が前方（金
型取付面側）に傾いて固定盤との平行度を維持すること
ができない。 また、複数のタイバーを夫々単独の型締
シリンダで引張ることにより型締を行うので、例へば型
を微小に開いた状態で金型キャビティ内に樹脂材料を射
出した後、型閉をして型締を行ういわゆる射出圧縮成形
の場合には成形品形状により各タイバーにかかる型締反
力にバラツキが生じ、固定盤との平行度の維持は一層困
難となる。As described above, in the mold clamping device for advancing and retracting the movable plate by pushing and pulling each tie bar by the mold clamping cylinder, since there is no mechanism on the back surface of the movable plate, the mold is attached to the mold mounting surface. When the is attached, the movable plate tilts forward (toward the die mounting surface), and the parallelism with the fixed plate cannot be maintained. Also, since the mold clamping is performed by pulling multiple tie bars with their own mold clamping cylinders, for example, after injecting the resin material into the mold cavity with the mold slightly opened, the mold is closed and the mold is clamped. In the case of so-called injection compression molding, in which the mold clamping reaction force applied to each tie bar varies depending on the shape of the molded product, it becomes more difficult to maintain the parallelism with the stationary platen.
【０００４】さらに固定盤に対して可動盤が傾いたまま
移動したり、傾いたまま型締を行うと成形品の寸法精度
が保てないばかりでなく、型締シリンダのガイドブッシ
ュやピストンリングの磨耗や損傷を早めるなどの欠点が
ある。Further, if the movable platen moves while tilted with respect to the fixed platen, or if the mold is clamped while it is tilted, not only the dimensional accuracy of the molded product cannot be maintained, but also the guide bushes and piston rings of the mold clamping cylinder cannot be maintained. There are drawbacks such as accelerated wear and damage.
【０００５】通常可動盤には移動方向にガイド装置を設
けたり、可動盤を厚くしてその剛性アップをして固定盤
との平行度の維持を計っているが、装置の床占有率の問
題、或いは重量の問題等が新たに生じ、問題解決となっ
ていない。Usually, the movable platen is provided with a guide device in the moving direction, or the movable platen is thickened to increase the rigidity thereof to maintain the parallelism with the fixed platen. Alternatively, a weight problem or the like newly occurs and the problem is not solved.
【０００６】本発明の目的は前述の欠点を取除き可動盤
が固定盤に対し平行を保ちつつ移動し、かつ型締を行う
ような射出成形機の型締装置を提供することにある。An object of the present invention is to eliminate the above-mentioned drawbacks and to provide a mold clamping device for an injection molding machine in which a movable platen moves while keeping parallel to a fixed platen and performs mold clamping.
【０００７】[0007]
【課題を解決するための手段】前述の目的を達成するた
め、本発明は固定型を支持する固定盤と、可動型を支持
する可動盤と、少なくとも固定盤または可動盤に固定し
た複数の平行なタイバーと、各タイバーの中途位置に設
けたピストンをその内径面に摺動可能に嵌着させるると
ともに、前記固定盤または可動盤に一体的に設けられ、
前記可動盤を進退可能に取付ける複数の異なるシリンダ
を有して成る射出成形機の型締装置において、前記固定
盤と可動盤の間に同可動盤が固定盤に対して平行を保っ
て移動および型締を行うための可動盤平行維持機構を設
けたことを特徴とする射出成形機の型締装置。In order to achieve the above-mentioned object, the present invention provides a fixed plate supporting a fixed mold, a movable plate supporting a movable mold, and at least a fixed plate or a plurality of parallel plates fixed to the movable plate. A tie bar and a piston provided at an intermediate position of each tie bar slidably fitted to the inner diameter surface of the tie bar, and integrally provided on the fixed plate or the movable plate,
In a mold clamping device of an injection molding machine having a plurality of different cylinders for mounting the movable plate so that the movable plate can move forward and backward, the movable plate moves between the fixed plate and the movable plate in parallel with the fixed plate. A mold clamping device for an injection molding machine, comprising a movable plate parallel maintaining mechanism for performing mold clamping.
【０００８】また前記可動盤平行維持機構は一端をタイ
バー近くの固定盤の上下左右の４面に１対づつタイバー
に平行に固着するとともに、ラックを設けた他端は可動
盤に達しているラック部材と、前記可動盤に回転自在に
取付けられ、前記１対のラック部材の間に直列に噛合っ
た偶数個のピニオンを設けるとともに、同偶数個並んだ
両端のピニオンは前記１対のラック部材のラックに夫々
噛合いようにしたピニオン群を有して成る請求項１記載
の射出成形機の型締装置とした。Further, the movable plate parallel maintaining mechanism has one end fixed in parallel to the tie bar one by one on four sides of the fixed plate near the tie bar in parallel with the tie bar, and the other end provided with the rack reaches the movable plate. And an even number of pinions meshed in series between the pair of rack members that are rotatably attached to the movable plate, and the even number of pinions at both ends are the pair of rack members. 2. The mold clamping device for an injection molding machine according to claim 1, wherein each rack has pinion groups that are engaged with each other.
【０００９】さらに前記可動盤平行維持機構は可動盤と
固定盤の間をリンク機構により連結したことを特徴とす
る請求項１記載の射出成形機の型締装置とした。The mold clamping device for an injection molding machine according to claim 1, wherein the movable plate parallel maintaining mechanism connects the movable platen and the fixed platen by a link mechanism.
【００１０】さらにまた前記可動盤平行維持機構は前記
ラックとピニオンからなる機構と前記リンク機構を組合
わせたことを特徴とする請求項１記載の射出成形機の型
締装置とした。The mold clamping device for an injection molding machine according to claim 1, wherein the movable plate parallel maintaining mechanism is a combination of the rack and pinion mechanism and the link mechanism.
【００１１】[0011]
【作用】本発明によれば可動盤と固定盤の間に設けた可
動盤平行維持機構により、可動盤は固定盤に対し平行を
維持したまま移動するとともに、型締も行われる。According to the present invention, the movable platen parallel maintaining mechanism provided between the movable platen and the fixed platen moves the movable platen in parallel with the fixed platen and also performs mold clamping.
【００１２】[0012]
【実施例】次に本発明の１実施例を図１および図２によ
り説明する。説明に当たり、従来装置と変わらない部材
は同一番号を付し、その説明を省き、新たに追加された
部材のみ新番号を付して説明する。固定盤１の左右上下
の各面のタイバー３および４付近には一端を固着された
片持状態のタイバーに平行な１対のラック部材１１およ
び１２が設けてあり、ラック１３を設けた自由端である
他端は可動盤２まで伸びている。可動盤２の左右上下の
各面の前記ラック部材１１および１２の間には回転自在
で直列に噛合った偶数個のピニオン１４ａ、１４ｂ、１
４ｃ…が設けてあり、直列に並んだピニオン群１４の両
端のピニオンは夫々前記ラック１３に噛合っている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the present invention will be described with reference to FIGS. In the description, members that are the same as those in the conventional device are denoted by the same reference numerals, the description thereof will be omitted, and only newly added members will be denoted by new numbers. Near the tie bars 3 and 4 on the left, right, top and bottom surfaces of the fixed platen 1, there are provided a pair of rack members 11 and 12 which are fixed to one end and are parallel to the tie bar in a cantilever state. The other end of is extending to the movable platen 2. Between the rack members 11 and 12 on the left, right, upper and lower surfaces of the movable platen 2, there are even number of pinions 14a, 14b, 1 which are rotatable and meshed in series.
4c are provided, and the pinions at both ends of the pinion group 14 arranged in series mesh with the rack 13 respectively.
【００１３】１５はストッパで、前記ラック部材１１お
よび１２の反ラック側に設けてあり、自由端である他端
がピニオン群１４との噛合で外側（反ラック側）に逃げ
ないようにしている。１６および１７は夫々固定盤１お
よび可動盤２に取付けられた固定金型、可動金型であ
る。Reference numeral 15 denotes a stopper, which is provided on the side opposite to the rack of the rack members 11 and 12, and the other end, which is a free end, is engaged with the pinion group 14 so as not to escape to the outside (counter rack side). . Reference numerals 16 and 17 denote a fixed mold and a movable mold attached to the fixed plate 1 and the movable plate 2, respectively.
【００１４】以上説明したような構成となっており、次
にその作用動作に付いて説明すると、型締工程となり、
型締シリンダ６および７に圧油が作用し、可動盤２は両
金型１６および１７が当接して金型キャビティを形成す
るまで前進（図中右方向）し、型締が行われる。この間
可動盤２の移動とともにピニオン群１４の両端のピニオ
ンはラック部材１１および１２のラック１３上を移動
し、上下、左右のラック部材１１および１２は直列に噛
合った偶数個のピニオン群１４で連結されているので可
動盤２は上下左右同時に移動し、固定盤１に対して平行
状態を維持し続ける。また射出圧縮成形の場合も可動盤
２は固定盤１に対して平行状態を維持したまま移動およ
び型締が行われ、前述のような欠点が取り除かれる。The structure as described above is explained. Next, the operation and operation will be explained.
Pressure oil acts on the mold clamping cylinders 6 and 7, and the movable platen 2 is advanced (to the right in the drawing) until both molds 16 and 17 contact each other to form a mold cavity, and mold clamping is performed. During this time, as the movable platen 2 moves, the pinions at both ends of the pinion group 14 move on the rack 13 of the rack members 11 and 12, and the upper and lower rack members 11 and 12 form an even number of pinion groups 14 meshed in series. Since they are connected, the movable platen 2 moves vertically and horizontally at the same time and keeps parallel to the fixed platen 1. Also in the case of injection compression molding, the movable platen 2 is moved and clamped while maintaining the parallel state to the fixed platen 1, and the above-mentioned drawbacks are eliminated.
【００１５】前述のように、ラックとピニオンによる機
構ばかりでなく、図３および図４のように固定盤１と可
動盤２の間をリンク機構２１により連結するようにして
も良い。この方法は金型交換や製品取出しの関係から上
面や下面は取付けに制限があり、可動盤の固定盤に対す
る平行移動および型締は不十分であるから図５および図
６のように左右にリンク機構２１を上下にラックとピニ
オンによる機構を設ければより確実に可動盤の固定盤に
対する平行移動および型締は行われる。As described above, not only the mechanism using the rack and the pinion, but also the fixed platen 1 and the movable platen 2 may be connected by the link mechanism 21 as shown in FIGS. 3 and 4. In this method, the upper surface and the lower surface are limited to be attached due to mold replacement and product removal, and the parallel movement of the movable plate with respect to the fixed plate and the mold clamping are insufficient. Therefore, as shown in FIGS. 5 and 6, link left and right. If a mechanism including a rack and a pinion is provided above and below the mechanism 21, the movable platen is more surely translated and clamped with respect to the fixed platen.
【００１６】[0016]
【発明の効果】本発明は以上説明したように型締工程に
おいて可動盤は固定盤に対して平行移動および型締が行
われる。As described above, according to the present invention, the movable platen is moved in parallel and clamped with respect to the fixed platen in the mold clamping step.
【図１】本発明の１実施例を示す型締装置の平面図。FIG. 1 is a plan view of a mold clamping device showing an embodiment of the present invention.
【図２】本発明の１実施例を示す型締装置で図１の正面
図。FIG. 2 is a front view of FIG. 1 showing a mold clamping device showing an embodiment of the present invention.
【図３】本発明の他の実施例を示す型締装置の平面図。FIG. 3 is a plan view of a mold clamping device showing another embodiment of the present invention.
【図４】本発明の他の実施例を示す型締装置で図３の正
面図。FIG. 4 is a front view of FIG. 3 showing a mold clamping device showing another embodiment of the present invention.
【図５】本発明のさらに他の実施例を示す型締装置の平
面図。FIG. 5 is a plan view of a mold clamping device showing still another embodiment of the present invention.
【図６】本発明のさらに他の実施例を示す型締装置で図
５の正面図。FIG. 6 is a front view of FIG. 5 showing a mold clamping device showing still another embodiment of the present invention.
【図７】従来の型締装置を示す正面図。FIG. 7 is a front view showing a conventional mold clamping device.
【図８】図８の断面Ａ−Ａを示す図。8 is a view showing a cross section AA of FIG.
１ 固定盤 ２ 可動盤 ３ タイバー ４ タイバー ５ ピストン ６ 型締用シリンダ ７ 型閉用シリンダ ８ 油圧回路 １１ ラック部材 １２ ラック部材 １３ ラック １４ ピニオン群 １５ ストッパ １６ 固定金型 １７ 可動金型 ２１ リンク機構 1 Fixed plate 2 Movable plate 3 Tie bar 4 Tie bar 5 Piston 6 Cylinder for mold clamping 7 Cylinder for mold closing 8 Cylinder for mold closing 8 Hydraulic circuit 11 Rack member 12 Rack member 13 Rack 14 Pinion group 15 Stopper 16 Fixed mold 17 Movable mold 21 Link mechanism
───────────────────────────────────────────────────── フロントページの続き (72)発明者 成川 藤彦 静岡県沼津市大岡2068―３ 東芝機械株式 会社沼津事業所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Fujihiko Narikawa 2068-3 Ooka, Numazu City, Shizuoka Prefecture Numazu Works, Toshiba Machine Co., Ltd.
Claims (4)
持する可動盤と、少なくとも固定盤または可動盤に固定
した複数の平行なタイバーと、各タイバーの中途位置に
設けたピストンをその内径面に摺動可能に嵌着させると
ともに、前記固定盤または可動盤に一体的に設けられ、
前記可動盤を進退可能に取付ける複数の異なるシリンダ
を有して成る射出成形機の型締装置において、前記固定
盤と可動盤の間に同可動盤が固定盤に対して平行を保っ
て移動および型締を行うための可動盤平行維持機構を設
けたことを特徴とする射出成形機の型締装置。1. A fixed plate for supporting a fixed die, a movable plate for supporting a movable die, at least a plurality of parallel tie bars fixed to the fixed plate or the movable plate, and a piston provided at an intermediate position of each tie bar. While being slidably fitted to the inner diameter surface, integrally provided on the fixed plate or the movable plate,
In a mold clamping device of an injection molding machine having a plurality of different cylinders for mounting the movable plate so that the movable plate can move forward and backward, the movable plate moves between the fixed plate and the movable plate in parallel with the fixed plate. A mold clamping device for an injection molding machine, comprising a movable plate parallel maintaining mechanism for performing mold clamping.
ー近くの固定盤の上下左右の４面に１対づつタイバーに
平行に固着するとともに、ラックを設けた他端は可動盤
に達しているラック部材と、前記可動盤に回転自在に取
付けられ、前記１対のラック部材の間に直列に噛合った
偶数個のピニオンを設けるとともに、同偶数個並んだ両
端のピニオンは前記１対のラック部材のラックに夫々噛
合いようにしたピニオン群を有して成る請求項１記載の
射出成形機の型締装置。2. The movable plate parallel maintaining mechanism has one end fixed in parallel to the tie bar one by one on the upper, lower, left and right four surfaces of a fixed plate near the tie bar, and the other end where the rack is provided reaches the movable plate. An even number of pinions, which are rotatably attached to the rack member and the movable plate and meshed in series, are provided between the pair of rack members, and the even number of pinions at both ends are arranged in the pair of racks. 2. A mold clamping device for an injection molding machine according to claim 1, wherein each of the member racks has a group of pinions that are in mesh with each other.
盤の間をリンク機構により連結したことを特徴とする請
求項１記載の射出成形機の型締装置。3. The mold clamping device for an injection molding machine according to claim 1, wherein the movable plate parallel maintaining mechanism connects a movable platen and a fixed platen by a link mechanism.
ピニオンからなる機構と前記リンク機構を組合わせたこ
とを特徴とする請求項１記載の射出成形機の型締装置。4. The mold clamping device of an injection molding machine according to claim 1, wherein the movable plate parallel maintaining mechanism is a combination of the mechanism including the rack and the pinion and the link mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27699194A JPH08112845A (en) | 1994-10-17 | 1994-10-17 | Mold clamping device of injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27699194A JPH08112845A (en) | 1994-10-17 | 1994-10-17 | Mold clamping device of injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08112845A true JPH08112845A (en) | 1996-05-07 |
Family
ID=17577247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27699194A Pending JPH08112845A (en) | 1994-10-17 | 1994-10-17 | Mold clamping device of injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08112845A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001003904A1 (en) * | 1999-07-09 | 2001-01-18 | Libbey-Owens-Ford Co. | Improved injection molding method and apparatus having improved detachable clamping unit with horizontal booking dies |
| WO2004041509A1 (en) * | 2002-11-07 | 2004-05-21 | Oima S.P.A. | Column injection moulding press for plastics materials |
| JP2006320948A (en) * | 2005-05-20 | 2006-11-30 | Toshiba Mach Co Ltd | Die clamping apparatus and forming machine |
| CN106182564A (en) * | 2016-06-30 | 2016-12-07 | 无锡康柏斯机械科技有限公司 | A kind of ring washer rapid manufacturing apparatus |
| CN112676547A (en) * | 2020-12-12 | 2021-04-20 | 靖江市钜顺精密轻合金成型科技有限公司 | Steering wheel skeleton die casting die for car |
-
1994
- 1994-10-17 JP JP27699194A patent/JPH08112845A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001003904A1 (en) * | 1999-07-09 | 2001-01-18 | Libbey-Owens-Ford Co. | Improved injection molding method and apparatus having improved detachable clamping unit with horizontal booking dies |
| JP2003504232A (en) * | 1999-07-09 | 2003-02-04 | リビー−オーウェンズ−フォード・カンパニー | Improved injection molding method and apparatus using an improved detachable clamping device with a horizontal book press |
| US6626659B1 (en) | 1999-07-09 | 2003-09-30 | Libbey-Owens-Ford Co. | Injection molding method and apparatus having improved detachable clamping unit with horizontal booking dies |
| WO2004041509A1 (en) * | 2002-11-07 | 2004-05-21 | Oima S.P.A. | Column injection moulding press for plastics materials |
| JP2006320948A (en) * | 2005-05-20 | 2006-11-30 | Toshiba Mach Co Ltd | Die clamping apparatus and forming machine |
| CN106182564A (en) * | 2016-06-30 | 2016-12-07 | 无锡康柏斯机械科技有限公司 | A kind of ring washer rapid manufacturing apparatus |
| CN112676547A (en) * | 2020-12-12 | 2021-04-20 | 靖江市钜顺精密轻合金成型科技有限公司 | Steering wheel skeleton die casting die for car |
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