JPH0417128B2 - - Google Patents
Info
- Publication number
- JPH0417128B2 JPH0417128B2 JP60069838A JP6983885A JPH0417128B2 JP H0417128 B2 JPH0417128 B2 JP H0417128B2 JP 60069838 A JP60069838 A JP 60069838A JP 6983885 A JP6983885 A JP 6983885A JP H0417128 B2 JPH0417128 B2 JP H0417128B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- mold clamping
- rotating disk
- rotary disk
- platen
- 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
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
- B29C45/03—Injection moulding apparatus
- B29C45/04—Injection moulding apparatus using movable moulds or mould halves
- B29C45/06—Injection moulding apparatus using movable moulds or mould halves mounted on a turntable, i.e. on a rotating support having a rotating axis parallel to the mould opening, closing or clamping direction
- B29C45/062—Injection moulding apparatus using movable moulds or mould halves mounted on a turntable, i.e. on a rotating support having a rotating axis parallel to the mould opening, closing or clamping direction carrying mould halves co-operating with fixed mould halves
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、熱可塑性樹脂或は熱硬化性樹脂等の
合成樹脂の射出成形、就中インサート射出成形を
容易に行なうことが可能な縦形回転射出成形機に
関するものである。Detailed Description of the Invention (Field of Industrial Application) The present invention is directed to a vertical rotary molding machine that can easily carry out injection molding, particularly insert injection molding, of synthetic resins such as thermoplastic resins and thermosetting resins. It relates to injection molding machines.
（従来の技術）
従来、この種の縦形回転射出成形機では、第３
図に示す如く型締シリンダ７の型開限位置で、該
シリンダに連結された型締め板６上にスラストベ
アリング１１を介して回転円盤８を支持できるよ
うにする方法Ａ、第４図に示す如く回転円盤８の
下面又は固定プラテン１の上面にスプリング１９
により上下動可能に弾発支持されたボール２０を
装着し、該ボール２０を介して回転円盤８を支持
する方法Ｂ、第５図に示す如く回転円盤８をその
中心部で固定プラテン１と一体のフレーム２１上
にスプリング２２を介して弾発支持する方法Ｃ等
により、回転円盤８を回転できると共に、下型割
出し位置では回転円盤８を固定プラテン１上に支
持して型締めができるようにしている。(Prior art) Conventionally, in this type of vertical rotary injection molding machine, the third
Method A is shown in FIG. 4, in which a rotating disk 8 can be supported via a thrust bearing 11 on a mold clamping plate 6 connected to the mold clamping cylinder 7 at the mold opening limit position of the mold clamping cylinder 7 as shown in the figure. A spring 19 is attached to the lower surface of the rotating disk 8 or the upper surface of the fixed platen 1.
Method B, in which a ball 20 which is elastically supported so as to be able to move vertically is mounted, and the rotating disk 8 is supported via the ball 20, as shown in FIG. 5, the rotating disk 8 is integrated with the fixed platen 1 at its center. The rotary disk 8 can be rotated by resiliently supporting it on the frame 21 via a spring 22, etc., and at the lower mold indexing position, the rotary disk 8 can be supported on the fixed platen 1 and the mold can be clamped. I have to.
（発明が解決しようとする問題点）
しかし、前記の従来方法Ａでは、固定プラテン
１・回転円盤８間に隙間ｇが生じるのは型開限、
つまり型締シリンダ７の開きストロークエンドに
おいてであり、型開きストロークの途中では回転
円盤８の回転ができず、サイクル時間の点で不利
である。(Problems to be Solved by the Invention) However, in the conventional method A described above, the gap g between the fixed platen 1 and the rotating disk 8 occurs only at the mold opening limit.
That is, at the end of the opening stroke of the mold clamping cylinder 7, and the rotating disk 8 cannot rotate during the mold opening stroke, which is disadvantageous in terms of cycle time.
従来方法Ｂでは、型締め時固定プラテン１・回
転円盤８間に隙間がなくなるが、回転円盤８を持
上げるスプリング１９の力Ｆは常に働いており、
型締め時型締め力Ｐが働く位置に関して曲げモー
メントＭ＝Fl1＋Fl2が生じて回転円盤８及びその
回転中心軸であるタイバー３に曲げ力が作用する
から、回転円盤８の回転部に偏摩耗が発生して回
転精度が悪化するおそれがある。また、回転円盤
８が上下動する構造でスプリング力により押上げ
られているため、回転円盤８上の下型１０等の積
載荷重により下型高さが変動するから、自動機等
との接続調整が精度良くかつ容易に行なえない。 In conventional method B, there is no gap between the fixed platen 1 and the rotating disk 8 during mold clamping, but the force F of the spring 19 that lifts the rotating disk 8 is always working.
During mold clamping, a bending moment M=Fl 1 +Fl 2 is generated with respect to the position where the mold clamping force P acts, and the bending force acts on the rotating disk 8 and the tie bar 3, which is its rotation center axis, so that the rotating part of the rotating disk 8 is biased. There is a risk that wear will occur and rotation accuracy will deteriorate. In addition, since the rotary disk 8 has a structure that moves up and down and is pushed up by spring force, the height of the lower mold fluctuates depending on the load of the lower mold 10 etc. on the rotary disk 8, so it is difficult to adjust the connection with automatic machines etc. cannot be performed accurately and easily.
従来方法Ｃでは、従来方法Ｂと同様に、スプリ
ング２２が回転円盤８の中心部にあるとはいえ型
締め時曲げモーメントＭ＝Fl3が生じるから、回
転円盤８の回転部に偏摩耗が発生して回転精度が
悪化するおそれがあるし、また、円盤上の積載荷
重により下型高さが変動するから、自動機等との
接続調整を精度良くかつ容易に行なえないという
不都合があつた。 In conventional method C, as in conventional method B, even though the spring 22 is located at the center of the rotating disk 8, a bending moment M=Fl 3 occurs during mold clamping, so uneven wear occurs in the rotating part of the rotating disk 8. There is a risk that the rotational precision will be deteriorated, and the height of the lower die fluctuates due to the load on the disk, so there is a problem that connection adjustment with automatic machines etc. cannot be performed accurately and easily.
本発明は、かかる不都合を解消するためになし
たもので、回転円盤を常時一定の高さに保ちなが
ら、型締め時型締力を確実に支え、型開き時回転
円盤をスムーズに回転できるようにすることを目
的とする。 The present invention has been made in order to eliminate such inconveniences, and it is possible to maintain the rotating disk at a constant height at all times, reliably support the mold clamping force during mold clamping, and ensure smooth rotation of the rotating disk when the mold is opened. The purpose is to
（問題点を解決するための手段）
本発明の縦形回転射出成形機は、複数本のタイ
バーを介して上下動可能な上型を装着した可動プ
ラテンと、該可動プラテンの下部にて前記タイバ
ーの内の一本を回転中心軸として上下動せずに回
転可能な複数個のインサート成形用の下型を載置
した回転円盤と、該回転円盤を挟んで前記可動プ
ラテンに対向する固定プラテンに型締中心線上で
上下動可能な受圧部を有し、型締時該受圧部によ
り前記回転円盤を反下型側から支持する型締力支
持装置とを設けたことを特徴とするものである。(Means for Solving the Problems) The vertical rotary injection molding machine of the present invention includes a movable platen equipped with an upper die that can be moved up and down via a plurality of tie bars, and a movable platen equipped with an upper mold that can move up and down via a plurality of tie bars, and A rotary disk on which a plurality of lower molds for insert molding, which can be rotated without vertical movement with one of the lower molds as a rotation center axis, is mounted, and a mold is mounted on a fixed platen facing the movable platen with the rotary disk in between. The present invention is characterized in that a mold clamping force support device is provided, which has a pressure receiving part that is movable up and down on the clamping center line, and supports the rotary disk from the side opposite to the lower mold by the pressure receiving part during mold clamping.
（実施例）
以下その詳細を第１図に示す実施例につき説明
する。(Example) The details will be explained below with reference to the example shown in FIG.
１は架台２上に支持固定された固定プラテン
で、該プラテン１には複数本のタイバー３（実施
例では３本）が上下に摺動可能に貫通している。 A fixed platen 1 is supported and fixed on a frame 2, and a plurality of tie bars 3 (three in the embodiment) pass through the platen 1 in a vertically slidable manner.
４は可動プラテンで、タイバー３の上端に装着
されている。この可動プラテン４の下面には上型
５が装着され、該プラテン４の上部には図示しな
い射出装置が該プラテン４側に進退可能に設けら
れている。 A movable platen 4 is attached to the upper end of the tie bar 3. An upper die 5 is mounted on the lower surface of the movable platen 4, and an injection device (not shown) is provided on the upper part of the platen 4 so as to be movable toward the platen 4.
６は型締め板で、タイバー３の下端に装着され
ている。この型締め板６には、固定プラテン１下
面に装着された型締シリンダ７のピストンロツド
先端が連結されている。 A mold clamping plate 6 is attached to the lower end of the tie bar 3. The mold clamping plate 6 is connected to the tip of a piston rod of a mold clamping cylinder 7 mounted on the lower surface of the fixed platen 1.
８は回転円盤で、該円盤８の下面中央にはボス
９が形成され、上面に同芯に描いた仮想円上には
等間隔で複数個の下型１０（実施例では４個）が
載置されている。この回転円盤８は、タイバー３
の内の一本に嵌入され、かつ、固定プラテン１に
軸受１１を介して支持されている。該円盤８のボ
ス９にはギヤ１２が設けられている。このギヤ１
２にかみ合うピニオン１３は、架台２に設置した
モータ１４の出力軸に装着されている。このよう
に構成したから、回転円盤８は、モータ１４によ
りタイバー３の内の一本を回転中心軸として上下
動せずに回転される
１５はピストンで、固定プラテン１内に型締中
心線上で上下摺動可能に嵌入されている。該ピス
トン１５上面には、固定プラテン１上面から突出
するラム１６（受圧部）が一体に連設されてい
る。この型締力支持装置は、そのラム１６によ
り、下型１０の一個が上型５の直下の型締め位置
にある回転円盤８を型締時反下型１０側から支持
できるように設けられている。 8 is a rotating disk, a boss 9 is formed at the center of the lower surface of the disk 8, and a plurality of lower molds 10 (four in the example) are placed at equal intervals on an imaginary circle drawn concentrically on the upper surface. It is placed. This rotating disk 8 is connected to the tie bar 3
and is supported by the fixed platen 1 via a bearing 11. A gear 12 is provided on the boss 9 of the disc 8. This gear 1
A pinion 13 that meshes with the motor 2 is attached to the output shaft of a motor 14 installed on the frame 2. With this configuration, the rotary disk 8 is rotated by the motor 14 about one of the tie bars 3 as the center axis of rotation without moving up and down. 15 is a piston, which is mounted inside the fixed platen 1 on the mold clamping center line. It is fitted so that it can be slid up and down. A ram 16 (pressure receiving section) protruding from the upper surface of the fixed platen 1 is integrally connected to the upper surface of the piston 15 . This mold clamping force support device is provided so that one of the lower molds 10 can support the rotary disk 8 located at the mold clamping position directly below the upper mold 5 from the side opposite to the lower mold 10 when the mold is clamped. There is.
尚、本実施例では、型締シリンダ７を固定プラ
テン１下部に設け、型締め板６、タイバー３を介
して可動プラテン４を移動させる例について説明
したが、第２図に示す如く型締シリンダ７を、タ
イバー３上端に装着した型締背板１７に設け、可
動プラテン４を直接移動させてもよい。 In this embodiment, the mold clamping cylinder 7 is provided below the fixed platen 1, and the movable platen 4 is moved via the mold clamping plate 6 and the tie bar 3. However, as shown in FIG. 7 may be provided on the mold clamping back plate 17 attached to the upper end of the tie bar 3, and the movable platen 4 may be directly moved.
型締力支持装置を固定プラテン１に内蔵した例
について説明したが、第２図に示す如く該プラテ
ン１上にシリンダ１８を介して設けてもよい。 Although an example has been described in which the mold clamping force support device is built into the fixed platen 1, it may also be provided on the platen 1 via a cylinder 18 as shown in FIG.
以上の構成において、型締力の働く直前までに
型締力支持装置のピストン１５下部のシリンダ室
に図示しない油圧源から圧油を供給してラム１６
を上動させ、該ラム１６頂面を回転円盤８の下面
に当接するか、或はその当接位置に極めて近い位
置に移動させる。かくしてラム１６で型締力を支
えうる状態とした後、型締シリンダ７の伸長作動
により可動プラテン４を固定プラテン１側に移動
させて上型５と下型１０を型締めした後、射出装
置によりキヤビテイ内に合成樹脂を射出し、保圧
冷却後型締シリンダ７の逆作動により上型５と下
型１０を型開きする。その直後、型締力支持装置
のピストン１５下部のシリンダ室から圧油を排出
してラム１６を元の位置まで戻し、該ラム１６頂
面と回転円盤８下面との間に隙間ｇをつくる。し
かる後、モータ１４の回転制御によつて回転円盤
８の次の下型割出し位置まで回転させると、回転
円盤８は、該円盤８下面・ラム１６頂面間に隙間
ｇを保ちつつ軸受１１によりスムーズに回転さ
れ、成形品を支持した下型１０が排出位置に配置
され、そこで成形品が排出されると共に、新たな
下型１０がインサート材料を挿入された状態で型
締め位置に送り込まれ、前記した工程で型締め、
射出、保圧冷却、型開きの各動作が繰返される。 In the above configuration, just before the mold clamping force is applied, pressure oil is supplied from a hydraulic source (not shown) to the cylinder chamber below the piston 15 of the mold clamping force support device, and the ram 16
is moved upward, and the top surface of the ram 16 is brought into contact with the lower surface of the rotary disk 8, or moved to a position very close to the contact position. After the ram 16 is in a state where it can support the mold clamping force, the movable platen 4 is moved to the fixed platen 1 side by the extension operation of the mold clamping cylinder 7, and the upper mold 5 and the lower mold 10 are clamped, and then the injection device The synthetic resin is injected into the cavity, and after cooling under pressure, the upper mold 5 and lower mold 10 are opened by reverse operation of the mold clamping cylinder 7. Immediately after that, the pressure oil is discharged from the cylinder chamber below the piston 15 of the mold clamping force support device, and the ram 16 is returned to its original position, creating a gap g between the top surface of the ram 16 and the bottom surface of the rotating disk 8. Thereafter, when the rotary disk 8 is rotated to the next lower mold indexing position by the rotation control of the motor 14, the rotary disk 8 is rotated to the bearing 11 while maintaining the gap g between the lower surface of the disk 8 and the top surface of the ram 16. The lower die 10, which is smoothly rotated and supports the molded product, is placed in the ejection position, where the molded product is ejected, and a new lower mold 10 with the insert material inserted is sent to the mold clamping position. , mold clamping in the above process,
The injection, holding pressure cooling, and mold opening operations are repeated.
（発明の効果）
以上の通り、本発明は、回転円盤が上下動せ
ず、型開閉中、回転中を問わず常に一定の高さを
保つているから、自動機等との接続調整が精度良
くかつ容易に行えると共に、型開き中、回転円盤
を回転させることができるから、成形サイクルの
短縮が図れる。また、型締め時、型締中心線上に
設けた型締力支持装置の受圧部により回転円盤を
反下型側から支持するから、型締め動作が確実に
行えると共に、回転円盤及びその回転中心軸であ
るタイバーに曲げ力が作用することはなく、回転
円盤の回転精度を常時保持できる。従つて、精度
の高いインサート成形を容易に行うことが可能と
なる。(Effects of the Invention) As described above, in the present invention, since the rotating disk does not move up and down and always maintains a constant height regardless of whether the mold is opening/closing or rotating, the connection adjustment with automatic machines etc. can be made with precision. This can be done well and easily, and since the rotary disk can be rotated during mold opening, the molding cycle can be shortened. In addition, during mold clamping, the rotating disk is supported from the side opposite to the lower mold by the pressure receiving part of the mold clamping force support device installed on the center line of the mold clamping, so the mold clamping operation can be performed reliably, and the rotating disk and its rotation center axis Since no bending force is applied to the tie bars, the rotation accuracy of the rotating disk can be maintained at all times. Therefore, it becomes possible to easily perform insert molding with high precision.
また、型締力支持装置として油圧シリンダ等を
設けるだけで済み、従来の回転円盤上下動方式に
比べて成形機が簡単でその維持管理を容易にでき
る。 In addition, it is only necessary to provide a hydraulic cylinder or the like as a mold clamping force support device, and the molding machine is simpler than the conventional rotary disk vertical movement system, and its maintenance and management can be made easier.
第１図、第２図は本発明の異なる実施例を示す
要部の縦断面図、第３図、第４図、第５図は従来
例を示す縦断面図である。
１……固定プラテン、２……架台、３……タイ
バー、４……可動プラテン、５……上型、６……
型締め板、７……型締シリンダ、８……回転円
盤、１０……下型、１１……軸受、１５……ピス
トン、１６……ラム、１７……型締背板、１８…
…シリンダ。
1 and 2 are longitudinal sectional views of main parts showing different embodiments of the present invention, and FIGS. 3, 4, and 5 are longitudinal sectional views showing conventional examples. 1... Fixed platen, 2... Frame, 3... Tie bar, 4... Movable platen, 5... Upper mold, 6...
Mold clamping plate, 7...mold clamping cylinder, 8... rotating disk, 10... lower mold, 11... bearing, 15... piston, 16... ram, 17... mold clamping back plate, 18...
…Cylinder.
Claims (1)
を装着した可動プラテンと、該可動プラテンの下
部にて前記タイバーの内の一本を回転中心軸とし
て上下動せずに回転可能な複数個のインサート成
形用の下型を載置した回転円盤と、該回転円盤を
挟んで前記可動プラテンに対向する固定プラテン
に型締中心線上で上下動可能な受圧部を有し、型
締時該受圧部により前記回転円盤を反下型側から
支持する型締力支持装置とを設けたことを特徴と
する縦形回転射出成形機。1. A movable platen equipped with an upper mold that can be moved up and down via a plurality of tie bars, and a plurality of molds that can be rotated at the bottom of the movable platen with one of the tie bars as a rotation center axis without moving up and down. A rotary disk on which a lower die for insert molding is placed, and a fixed platen facing the movable platen with the rotary disk in between has a pressure receiving part that can move up and down on the mold clamping center line, A vertical rotary injection molding machine, comprising: a mold clamping force support device for supporting the rotary disk from the side opposite to the lower mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6983885A JPS61228920A (en) | 1985-04-02 | 1985-04-02 | Vertical type rotary injection molder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6983885A JPS61228920A (en) | 1985-04-02 | 1985-04-02 | Vertical type rotary injection molder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61228920A JPS61228920A (en) | 1986-10-13 |
| JPH0417128B2 true JPH0417128B2 (en) | 1992-03-25 |
Family
ID=13414337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6983885A Granted JPS61228920A (en) | 1985-04-02 | 1985-04-02 | Vertical type rotary injection molder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61228920A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0650820U (en) * | 1992-12-24 | 1994-07-12 | 株式会社名機製作所 | Vertical injection molding machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5114937U (en) * | 1974-07-19 | 1976-02-03 |
-
1985
- 1985-04-02 JP JP6983885A patent/JPS61228920A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61228920A (en) | 1986-10-13 |
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| JPH0371250B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |