JPS6218418Y2 - - Google Patents
Info
- Publication number
- JPS6218418Y2 JPS6218418Y2 JP3601781U JP3601781U JPS6218418Y2 JP S6218418 Y2 JPS6218418 Y2 JP S6218418Y2 JP 3601781 U JP3601781 U JP 3601781U JP 3601781 U JP3601781 U JP 3601781U JP S6218418 Y2 JPS6218418 Y2 JP S6218418Y2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- moving body
- fixed
- switching valve
- valve
- 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
Links
- 238000002347 injection Methods 0.000 description 25
- 239000007924 injection Substances 0.000 description 25
- 238000000034 method Methods 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Description
【考案の詳細な説明】
本考案は、例えば射出成形機において射出装置
を金型の開閉に伴う可動金型の動きに追従移動さ
せて射出ノズルと可動金型のゲートとを確実に密
着保持するための装置に関するものである。[Detailed description of the invention] The present invention securely holds the injection nozzle and the gate of the movable mold in close contact with each other by moving the injection device to follow the movement of the movable mold as the mold is opened and closed, for example in an injection molding machine. It relates to a device for.
従来、スタツクモールド型射出成形機は１シヨ
ツト毎の金型開閉時に射出ノズルと可動金型のゲ
ートが離れるため成形品へのエアの混入、製品の
色ムラ、ヒケ等が生じるという不具合がある。 Conventionally, stack mold injection molding machines have problems such as the injection nozzle and the gate of the movable mold being separated when the mold is opened and closed for each shot, resulting in air intrusion into the molded product, uneven color of the product, sink marks, etc. .
本考案は、前記従来の問題点を解決するために
創案されたもので、移動体と該移動体の動きに追
従移動する追従移動体とを設け、該追従移動体に
ロツド径の異なる両ロツド形油圧シリンダの一方
のロツドまたはシリンダチユーブを固定し、シリ
ンダチユーブまたは一方のロツドを固定体に固定
するとともに、該油圧シリンダの双方の室をカウ
ンタバランス弁および一切換弁を介し互に連通
し、かつこれら両弁を連通する管路から分岐した
管路を他の切換弁を介して油圧源に接続したこと
により、移動体と追従移動体とを常時一定範囲内
の力で接触保持することができる移動体と追従移
動体との接触保持装置を提供することを目的とす
るものである。 The present invention was devised to solve the above-mentioned conventional problems, and includes a moving body and a following moving body that follows the movement of the moving body, and the following moving body has two rods with different diameters. One rod or cylinder tube of a hydraulic cylinder is fixed, the cylinder tube or one rod is fixed to a fixed body, and both chambers of the hydraulic cylinder are communicated with each other via a counterbalance valve and a total changeover valve, and By connecting a pipe branching from the pipe connecting these two valves to a hydraulic power source via another switching valve, it is possible to maintain contact between the moving body and the following moving body at all times with a force within a certain range. The object of the present invention is to provide a device for maintaining contact between a moving body and a following moving body.
以下、本考案を図示する実施例により説明する
と、図中１は進退自在な可動金型で、ダブルトグ
ル式型締装置２に連結されている。３は固定金
型、４は可動金型１および固定金型３間に配設さ
れた中間金型で、この中間金型４にはピニオン５
が装着されており、該ピニオン５は可動金型１お
よび固定金型３に一端がそれぞれ固定されたラツ
ク６，７にかみ合つている。可動金型１と中間金
型４とはこのラツクピニオン式連動機構５，６，
７により所定の関係で互に連動して移動する。８
−１，８−２はそれぞれ可動金型１、中間金型４
に、また９−１，９−２はそれぞれ固定金型３、
中間金型４に相対応させて設けられたキヤビテイ
である。１０は後述する装置により前記中間金型
４の動きに追従して進退自在な射出装置で、この
射出筒１１は前記固定金型３を貫通し、射出ノズ
ル１２は中間金型４に設けられたゲート１３に密
着可能となつている。 Hereinafter, the present invention will be explained with reference to the illustrated embodiment. In the figure, reference numeral 1 denotes a movable mold that can move forward and backward, and is connected to a double toggle type mold clamping device 2. 3 is a fixed mold, 4 is an intermediate mold disposed between the movable mold 1 and the fixed mold 3, and this intermediate mold 4 has a pinion 5.
The pinion 5 meshes with racks 6 and 7 whose ends are fixed to the movable mold 1 and the fixed mold 3, respectively. The movable mold 1 and the intermediate mold 4 are connected to each other by this rack and pinion type interlocking mechanism 5, 6,
7, they move in conjunction with each other in a predetermined relationship. 8
-1 and 8-2 are movable mold 1 and intermediate mold 4, respectively.
In addition, 9-1 and 9-2 are fixed molds 3 and 9-1, respectively.
This is a cavity provided in correspondence with the intermediate mold 4. Reference numeral 10 denotes an injection device which can move forward and backward following the movement of the intermediate mold 4 by means of a device to be described later.This injection cylinder 11 penetrates the fixed mold 3, and an injection nozzle 12 is provided in the intermediate mold 4. It can be brought into close contact with the gate 13.
１４は両ロツド形油圧シリンダで、シリンダチ
ユーブ１５に嵌入したビストン１６を挟んで対称
に位置するロツド１７，１８の方向を前記射出装
置１０の進退方向に合致させてシリンダチユーブ
１５が該射出装置１０に固定されるとともに、固
定金型３の側に位置するロツド１７の端部は固定
金型３に固定されている。前記ロツド１７，１８
の径は、固定金型３側のロツド１７の径d1をロツ
ド１８の径d2より小さく、すなわちd1＜d2とされ
ている。ロツド１８側のシリンダ室１９は切換弁
２０，２１を介して油圧ポンプ２２に管路連結さ
れており、またロツド１７側のシリンダ室２３は
カウンタバランス弁２４および切換弁２１を介し
て油圧ポンプ２２に管路連結されている。２５は
切換弁、２６は絞り弁で、これら切換弁２５およ
び絞り弁２６は直列に配設されるとともに、前記
カウンタバランス弁２４および切換弁２１と並列
に配設されている。切換弁２５および絞り弁２６
はカウンタバランス弁２４からの油漏れ等が生じ
た場合に必要なものである。カウンタバランス弁
２４の設定圧p1は切換弁２５および絞り弁２６を
介し油圧ポンプ２２から供給される圧油を考慮し
て決定される。前記油圧シリンダ１４において
は、ピストン１６に装着するシール材をテフロン
製としたり、あるいはピストンリングとするなど
摩擦係数の極めて小さいものとして、ピストン摺
動抵抗の小さいものとしている。 Reference numeral 14 denotes a double-rod type hydraulic cylinder, in which the directions of rods 17 and 18, which are positioned symmetrically across a piston 16 fitted into a cylinder tube 15, are aligned with the advancing and retracting direction of the injection device 10, so that the cylinder tube 15 can move toward the injection device 10. The end of the rod 17 located on the side of the fixed mold 3 is fixed to the fixed mold 3. Said rods 17, 18
The diameter d 1 of the rod 17 on the fixed mold 3 side is smaller than the diameter d 2 of the rod 18, that is, d 1 <d 2 . The cylinder chamber 19 on the rod 18 side is connected to the hydraulic pump 22 via switching valves 20 and 21, and the cylinder chamber 23 on the rod 17 side is connected to the hydraulic pump 22 via a counterbalance valve 24 and a switching valve 21. The pipe is connected to. 25 is a switching valve, and 26 is a throttle valve. These switching valve 25 and throttle valve 26 are arranged in series, and are arranged in parallel with the counterbalance valve 24 and switching valve 21. Switching valve 25 and throttle valve 26
This is necessary when oil leakage from the counterbalance valve 24 occurs. The set pressure p 1 of the counterbalance valve 24 is determined in consideration of the pressure oil supplied from the hydraulic pump 22 via the switching valve 25 and the throttle valve 26 . In the hydraulic cylinder 14, the sealing material attached to the piston 16 is made of Teflon or a piston ring, which has an extremely low coefficient of friction, so that the sliding resistance of the piston is small.
以上の構成において、型締装置２の作動により
可動金型１を前進させると、ラツクピニオン式連
動機構５，６，７を介し可動金型１の動きに連動
して、中間金型４は可動金型１および固定金型３
と係合するまで所定の間隔をもつて前進し、型閉
じ工程が完了する（第２図参照）。 In the above configuration, when the movable mold 1 is moved forward by the operation of the mold clamping device 2, the intermediate mold 4 is moved in conjunction with the movement of the movable mold 1 via the rack and pinion interlocking mechanisms 5, 6, and 7. Mold 1 and fixed mold 3
The mold closing process is completed by moving forward at a predetermined distance until it engages with the mold (see Fig. 2).
この型閉じ工程においては、第２図に示すよう
に切換弁２０の一方のソレノイド２０ａおよび切
換弁２５のソレノイド２５ａをそれぞれ励磁する
とともに、切換弁２１のソレノイド２１ａを非励
磁の状態に保持する。射出装置１０は中間金型４
の移動に伴い、該射出装置１０に固定された油圧
シリンダ１４のシリンダチユーブ１５も後退し、
ロツド１７側のシリンダ室２３は圧縮され、該室
内の油圧がカウンタバランス弁２４の設定圧力p1
に達すると、カウンタバランス弁２４が切換え動
作し、該弁２４を介し前記シリンダ室２３内の油
は切換弁２１の側に流出する。このとき、前述の
如く切換弁２１が非励磁であり、タンク２７と直
接連通しているが、切換弁２０が励磁されて該弁
２０を介してロツド１８の側のシリンダ室１９に
も連通されており、該室内にシリンダチユーブ１
５の移動により負圧となつているため、前記シリ
ンダ室２３内の油はカウンタバランス弁２４およ
び切換弁２０を介してシリンダ室１９内に流入
し、該シリンダ室２３内の油圧はカウンタバラン
ス弁２４の設定圧力p1に保たれる。 In this mold closing process, as shown in FIG. 2, one solenoid 20a of the switching valve 20 and the solenoid 25a of the switching valve 25 are energized, while the solenoid 21a of the switching valve 21 is kept in a non-energized state. The injection device 10 is an intermediate mold 4
Along with the movement, the cylinder tube 15 of the hydraulic cylinder 14 fixed to the injection device 10 also retreats,
The cylinder chamber 23 on the rod 17 side is compressed, and the oil pressure in this chamber is equal to the set pressure p 1 of the counterbalance valve 24.
When this point is reached, the counterbalance valve 24 performs a switching operation, and the oil in the cylinder chamber 23 flows out to the switching valve 21 through the valve 24. At this time, as described above, the switching valve 21 is de-energized and is in direct communication with the tank 27, but the switching valve 20 is energized and communicated with the cylinder chamber 19 on the rod 18 side via the valve 20. There is a cylinder tube 1 in the room.
5, the oil in the cylinder chamber 23 flows into the cylinder chamber 19 via the counterbalance valve 24 and the switching valve 20, and the oil pressure in the cylinder chamber 23 is reduced by the counterbalance valve. The set pressure p 1 of 24 is maintained.
従つて、射出ノズル１２とゲート１３との接触
力F1は機械系の抵抗等を無視すれば、
F1＝π／４p1（ｄ２ ３−ｄ２ １）、
p1：カウンタバランス弁２４の設定圧力
d1：ロツド１７の径
d3：シリンダチユーブ１５の内径
となる。 Therefore, the contact force F 1 between the injection nozzle 12 and the gate 13 is F 1 =π/4p 1 (d 2 3 - d 2 1 ), p 1 : Counter balance valve 24 Set pressure d 1 : Diameter of rod 17 d 3 : Inner diameter of cylinder tube 15.
可動金型１および中間金型４が停止した場合、
射出装置１０の慣性により射出ノズル１２がゲー
ト１３から離れようとするが、前述の通りシリン
ダ室１９，２３内の油圧力に大きな差があり、シ
リンダチユーブ１５には油圧力の強い方（図示左
方）に押し止める力が働いているため、中間金型
４による押動力が働かなくなつた時点で射出装置
１０の移動に強いブレーキがかかり、該射出装置
１０は直ちに停止するから、射出ノズル１２とゲ
ート１３との接触は確実に保持される。 When the movable mold 1 and the intermediate mold 4 stop,
The injection nozzle 12 tends to move away from the gate 13 due to the inertia of the injection device 10, but as mentioned above, there is a large difference in the hydraulic pressure in the cylinder chambers 19 and 23, and the cylinder tube 15 has the one with the stronger hydraulic pressure (left side in the figure). Since a pressing force is acting on the intermediate mold 4, a strong brake is applied to the movement of the injection device 10, and the injection device 10 immediately stops, so that the injection nozzle 12 The contact between the gate 13 and the gate 13 is reliably maintained.
射出工程においては、第３図に示すように切換
弁２０のソレノイド２０ｂおよび切換弁２１のソ
レノイド２１ａを励磁するとともに、切換弁２５
のソレノイド２５ａを非励磁の状態に保持してい
るため、油圧ポンプ２２からの圧油はカウンタバ
ランス弁２４のチエツク弁部分を通り油圧シリン
ダ１４のシリンダ室２３内に送られる。一方、シ
リンダ室１９内の油は切換弁２０を介してタンク
２７に流入する。従つて、射出ノズル１２とゲー
ト１３との接触力F2は、
F2＝π／４ｐS（ｄ２ ３−ｄ２ １）、
ｐS：油圧ポンプ２２からの供給油圧
d1：ロツド１７の径
d3：シリンダチユーブ１５の内径
となる。 In the injection process, as shown in FIG. 3, the solenoid 20b of the switching valve 20 and the solenoid 21a of the switching valve 21 are energized, and the switching valve 25
Since the solenoid 25a is held in a non-energized state, the pressure oil from the hydraulic pump 22 is sent into the cylinder chamber 23 of the hydraulic cylinder 14 through the check valve portion of the counterbalance valve 24. On the other hand, oil in the cylinder chamber 19 flows into the tank 27 via the switching valve 20. Therefore, the contact force F 2 between the injection nozzle 12 and the gate 13 is: F 2 =π/4p S (d 2 3 - d 2 1 ), p S : Hydraulic pressure supplied from the hydraulic pump 22 d 1 : Pressure of the rod 17 Diameter d 3 : This is the inner diameter of the cylinder tube 15.
さらに、型開き工程においては、第４図に示す
ように切換弁２０のソレノイド２０ａおよび切換
弁２１のソレノイド２１ａをそれぞれ励磁すると
ともに、切換弁２５のソレノイド２５ａを非励磁
の状態に保持しているため、油圧ポンプ２２から
の圧油は切換弁２０を介しシリンダ室１９に、ま
たカウンタバランス弁２４を介しシリンダ室２３
に同時に送られる。このとき、シリンダ室２３，
１９を貫通するロツド１７，１８の径が異なつて
おり、ピストン１６に働く油圧力が異なるため、
油圧シリンダ１４は差動シリンダとなり、シリン
ダチユーブ１５は油圧力の強い方（図示左方）に
移動するから、中間金型４が移動すると、この移
動に追従して射出ノズル１２も中間金型４の側に
移動する。従つて、射出ノズル１２とゲート１３
との接触力F3は機械系の抵抗等を無視できれ
ば、
F3＝π／４ｐS（ｄ２ ２−ｄ２ １）、
ｐS：油圧ポンプ２２からの供給油圧
d1：ロツド１７の径
d2：ロツド１８の径
となる。 Furthermore, in the mold opening process, as shown in FIG. 4, the solenoid 20a of the switching valve 20 and the solenoid 21a of the switching valve 21 are energized, and the solenoid 25a of the switching valve 25 is held in a non-energized state. Therefore, the pressure oil from the hydraulic pump 22 is transferred to the cylinder chamber 19 via the switching valve 20 and to the cylinder chamber 23 via the counterbalance valve 24.
sent at the same time. At this time, the cylinder chamber 23,
Since the diameters of the rods 17 and 18 that pass through the piston 19 are different, and the hydraulic pressure acting on the piston 16 is different,
The hydraulic cylinder 14 is a differential cylinder, and the cylinder tube 15 moves toward the side with stronger hydraulic pressure (to the left in the figure), so when the intermediate mold 4 moves, the injection nozzle 12 also moves to the intermediate mold 4 following this movement. move to the side. Therefore, the injection nozzle 12 and the gate 13
If the resistance of the mechanical system can be ignored, the contact force F 3 with the rod is F 3 = π/4p S (d 2 2 - d 2 1 ), p S : Hydraulic pressure supplied from the hydraulic pump 22 d 1 : Diameter of the rod 17 d 2 : The diameter of the rod 18.
前記切換弁２０のソレノイド２０ａと切換弁２
１のソレノイド２１ａは型開き工程の完了時点で
消磁され、切換弁２０，２１は元の状態に復帰す
る。 The solenoid 20a of the switching valve 20 and the switching valve 2
The first solenoid 21a is demagnetized upon completion of the mold opening process, and the switching valves 20 and 21 return to their original states.
なお、本実施例ではシリンダチユーブ１５を射
出装置１０に、また一方のロツド１７を固定金型
３に固定したが、逆にシリンダチユーブを固定
側、ロツドを移動側としてもよい。また、切換弁
２０，２１，２５の全ソレノイドを消磁し、か
つ、油圧シリンダ１４の室１９，２３を連通する
管路にさらに管路２８を設け、該管路に切換弁を
設け、該切換弁を介し油圧シリンダ１４に油圧ポ
ンプを接続しておけば、通常の射出装置移動用と
することも可能である。 In this embodiment, the cylinder tube 15 is fixed to the injection device 10 and one of the rods 17 is fixed to the fixed mold 3, but conversely, the cylinder tube may be fixed to the fixed side and the rod to the movable side. In addition, all the solenoids of the switching valves 20, 21, and 25 are demagnetized, and a pipe line 28 is further provided in the pipe line that communicates the chambers 19 and 23 of the hydraulic cylinder 14, a switching valve is provided in the pipe line, and the switching valve is If a hydraulic pump is connected to the hydraulic cylinder 14 via a valve, it can also be used for normal movement of the injection device.
以上の通り、本考案は油圧シリンダのシリンダ
チユーブ内径d3およびロツド径d1，d2と油圧ポン
プからの供給油圧ｐSまたはカウンタバランス弁
の設定圧p1等を適宜選定することにより、移動体
４を進退また急停止しても追従移動１０を移動体
４に対し確実に接触保持することができるととも
に、その接触力を適宜調節することができる。従
つて、射出成形機に適用すれば、成形品へのエア
の混入、製品の色ムラ、ヒケ等がなく製品の品質
の向上および安定を図りうるという優れた効果を
有する。 As described above, the present invention achieves movement by appropriately selecting the cylinder tube inner diameter d 3 and rod diameters d 1 and d 2 of the hydraulic cylinder, the supply oil pressure p S from the hydraulic pump, the set pressure p 1 of the counterbalance valve, etc. Even if the body 4 is moved back and forth or suddenly stopped, the follow-up movement 10 can be reliably kept in contact with the moving body 4, and the contact force can be adjusted as appropriate. Therefore, when applied to an injection molding machine, it has the excellent effect of preventing air from entering the molded product, uneven coloring of the product, sink marks, etc., and improving and stabilizing the quality of the product.
第１図は本考案をスタツクモールド型射出成形
機に適用した場合の装置構成例を示す概要図、第
２図、第３図、第４図はそれぞれ型閉じ時、射出
時、型開き時における装置の作動状況を示す概要
図である。
１……可動金型、３……固定金型、４……中間
金型、１０……射出装置、１２……射出ノズル、
１３……ゲート、１４……両ロツド形油圧シリン
ダ、１５……シリンダチユーブ、１６……ピスト
ン、１７，１８……ロツド、１９，２３……シリ
ンダ室、２０，２１，２５……切換弁、２２……
油圧ポンプ、２４……カウンタバランス弁、２６
……絞り弁、２７……タンク。
Fig. 1 is a schematic diagram showing an example of the equipment configuration when the present invention is applied to a stack mold injection molding machine, and Figs. 2, 3, and 4 are for mold closing, injection, and mold opening, respectively. FIG. 1...Movable mold, 3...Fixed mold, 4...Intermediate mold, 10...Injection device, 12...Injection nozzle,
13... Gate, 14... Double rod type hydraulic cylinder, 15... Cylinder tube, 16... Piston, 17, 18... Rod, 19, 23... Cylinder chamber, 20, 21, 25... Switching valve, 22...
Hydraulic pump, 24...Counter balance valve, 26
...throttle valve, 27...tank.
Claims (1)
動体とを設け、該追従移動体にロツド径の異なる
両ロツド形油圧シリンダの一方のロツドまたはシ
リンダチユーブを固定し、シリンダチユーブまた
は一方のロツドを固定体に固定するとともに、該
油圧シリンダの双方の室をカウンタバランス弁お
よび一切換弁を介し互に連通し、かつこれら両弁
を連通する管路から分岐した管路を他の切換弁を
介して油圧源に接続したことを特徴とする移動体
と追従移動体との接触保持装置。 A moving body and a following moving body that moves following the movement of the moving body are provided, one rod or cylinder tube of both rod type hydraulic cylinders having different rod diameters is fixed to the following moving body, and the cylinder tube or one of the rods is fixed to the following moving body. is fixed to a fixed body, and both chambers of the hydraulic cylinder are communicated with each other via a counterbalance valve and a total switching valve, and a pipe branching from a pipe that communicates these two valves is connected via another switching valve. A device for maintaining contact between a moving body and a following moving body, characterized in that the device is connected to a hydraulic power source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3601781U JPS6218418Y2 (en) | 1981-03-14 | 1981-03-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3601781U JPS6218418Y2 (en) | 1981-03-14 | 1981-03-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57149118U JPS57149118U (en) | 1982-09-18 |
| JPS6218418Y2 true JPS6218418Y2 (en) | 1987-05-12 |
Family
ID=29833262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3601781U Expired JPS6218418Y2 (en) | 1981-03-14 | 1981-03-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6218418Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0576837A1 (en) * | 1992-06-17 | 1994-01-05 | Richard Herbst | Injection mouding machine with stack mould |
| DE4340258A1 (en) * | 1993-11-26 | 1995-06-01 | Richard Herbst | Injection casting machine of improved performance |
| DE202016104165U1 (en) | 2015-07-30 | 2016-11-14 | Netstal-Maschinen Ag | Injection molding machine with stack mold for injection-molding applications |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015044392A (en) * | 2013-08-29 | 2015-03-12 | 株式会社日本製鋼所 | Operation method of injection molding machine to witch stack mold is attached |
-
1981
- 1981-03-14 JP JP3601781U patent/JPS6218418Y2/ja not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0576837A1 (en) * | 1992-06-17 | 1994-01-05 | Richard Herbst | Injection mouding machine with stack mould |
| DE4340258A1 (en) * | 1993-11-26 | 1995-06-01 | Richard Herbst | Injection casting machine of improved performance |
| DE4340258C2 (en) * | 1993-11-26 | 1996-08-01 | Richard Herbst | Injection molding machine with stack mold |
| DE202016104165U1 (en) | 2015-07-30 | 2016-11-14 | Netstal-Maschinen Ag | Injection molding machine with stack mold for injection-molding applications |
| DE102015112508A1 (en) | 2015-07-30 | 2017-02-02 | Netstal-Maschinen Ag | Injection molding machine with stack mold for injection-molding applications |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57149118U (en) | 1982-09-18 |
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