CN103128941B - Mechanical-hydraulic type double-movable-plate secondary mould closing structure of precise injection molding machine - Google Patents
Mechanical-hydraulic type double-movable-plate secondary mould closing structure of precise injection molding machine Download PDFInfo
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- CN103128941B CN103128941B CN201310069847.0A CN201310069847A CN103128941B CN 103128941 B CN103128941 B CN 103128941B CN 201310069847 A CN201310069847 A CN 201310069847A CN 103128941 B CN103128941 B CN 103128941B
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Abstract
The invention provides a mechanical-hydraulic type double-movable-plate secondary mould closing structure of a precise injection molding machine and a manner. The mechanical-hydraulic type double-movable-plate secondary mould closing structure comprises a machine fixed template, a movable mould plate I, a movable mould plate II, a tail plate, a mould adjusting motor, a mould adjusting motor gear, a mould adjusting gear ring, a mould adjusting small gear, a mould closing motor, a toggle rod mechanism, a secondary mould closing oil cylinder, a fixed mould and a movable mould. The mould closing device realizes two times of mould closing actions through two driving manners of the mould closing motor and the secondary mould closing oil cylinder, so as to be used for machining thin-wall and ultrathin-wall products. Primary mould closing utilizes the mould closing motor to drive the toggle rod mechanism and the toggle rod mechanism pushes the movable mould plate I and the movable mould plate II to realize primary mould closing action. Secondary mould closing utilizes the secondary mould closing oil cylinder to provide mould closing force to push the movable mould plate II so that the mould can move continually and the secondary mould closing is realized. The mould closing device is simple and easy to operate and can effectively improve the machining precision of products. Compared with a common mould closing mechanism, the mechanical-hydraulic type double-movable-plate secondary mould closing structure has great mould closing force, can effectively prevent products from having an uneven thickness phenomenon, and is good for machining the thin-wall and ultrathin-wall products.
Description
Technical field:
This patent is a kind of novel precise injection machine secondary mould closing structure and mode.For the requirement of mold closing mechanism in the precise injection molding process of thin-walled, ultra-thin-wall goods, namely in injection machine injection process, mould type cavity space is large, and the resistance in melt flows process is little, and product molding is easy; Mold clamping force is enough large, prevents goods from occurring overlap.In thin-gage goods injection process, mould inside due to gap smaller, very large resistance can be produced, mould is not easy to be full of, utilize the two dynamic trigger structure of injection machine to realize secondary mould closing, in mould filling process, the gap in die cavity is increased, the resistance that plastic melt is subject to reduces greatly, and mold cavity is easily full of.In filling melt process, mould mold clamping force used is delivered in tail template by elbow-bar mechanism, because elbow-bar mechanism reaches dead-centre position, crosshead is not stressed, mold clamping force is born by tail template, would not damage motor like this, when cavity filling completes, needed for secondary mould closing, power is provided by hydraulic jack, utilizes hydraulic jack can ensure the mold clamping force requirement of secondary mould closing.Utilize this mechanism can realize the precise injection molding of thin-gage goods.
Background technology:
At present, the goods that injection machine is produced are tending towards thin, little, light three aspects, and the performance requirement of injection machine is more and more higher.The matched moulds part of injection machine generally adopts the mode of a matched moulds, for the production of ultra-thin goods, can produce very large problem.Because the die cavity gap of ultra-thin goods mould is smaller, can be subject to very large resistance when melt flows into mould, mould can not be full of, and the goods of processing have defect, can not be used.There is above defect in the mode of production of a thin-gage goods matched moulds, secondary mould closing mode has just had certain advantage.
A lot of injection machine adopts Joint-double Clamping Unit, by the accurate mode of braking of servomotor, makes injection machine realize the clamping system of secondary mould closing, improves the performance of injection machine.This kind of secondary mould closing mode is by the accurate stopping power of servomotor, position toggle link being rested on set, now toggle link does not stretch completely, after waiting for that injection portion completes, driven by servomotor double curved elbow mechanism carries out secondary mould closing, makes product molding.In this kind of secondary mould closing mode, during mold filling, the masterpiece that mould produces is used on toggle link, because elbow-bar mechanism is not stretched, the power that mould produces can not all be delivered in tail template, and a part can pass to leading screw, remakes for bearing and tail template, this clamping system is comparatively large for the damage ratio of toggle link, leading screw and bearing, and then decreases the service life of injection machine.
Summary of the invention:
Patent of the present invention problem to be solved is the defect for thin-walled, ultra-thin-wall product molding difficulty, and improves the aspect such as aspect of performance of product molding precision and injection machine, proposes a kind of two dynamic plate secondary mould closing structure of mechanical hydraulic-pressure type of version uniqueness.
Patent of the present invention can realize, the technical scheme adopted is: a kind of novel precise injection machine mould-matching structure and clamping system, it is characterized in that: comprise solid plate 1, the dynamic model (tool) 13 matched with cover half (tool) 2, dynamic model two plate 3 of dynamic model (tool) 13 is installed, dynamic model one plate 4 is connected by secondary mould closing oil cylinder 12 with dynamic model two plate 3, the elbow-bar mechanism 11 dragging dynamic model one plate 4 and dynamic model two plate 3 is connected on dynamic model one plate 4, the tailgate 10 of mode transfer motor 5 and matched moulds motor 7 is installed, for regulating the mode transfer motor gear 6 of mould size, mode transfer pinion 8 and mold adjusting gear ring 9, pull bar 8 connects tailgate 10, dynamic model one plate 4 and dynamic model two plate 3, and solid plate 1.
During production of articles, the two dynamic plate clamping of mechanical hydraulic-pressure type needs matched moulds twice.Matched moulds occurs in plastic phase for the first time, first the matched moulds motor 7 be arranged on tailgate 10 drives elbow-bar mechanism 11, toggle link is stretched, toggle link promotes dynamic model one plate 4 and dynamic model two plate 3, cover half (tool) 2 is closed with dynamic model (tool) 13, this matched moulds process, the piston of secondary mould closing oil cylinder 12 is all the time near tailgate 10 direction.Then carry out melt injection, after waiting melt to inject, the two dynamic plate clamping of mechanical hydraulic-pressure type carries out second time matched moulds.Now, melt enters die cavity, and the secondary mould closing oil cylinder 12 be arranged on dynamic model one plate 4 starts to provide pressure, and promote dynamic model two plate 3 and mould is compressed further, make mold cavity change to the equirotal state with goods, cooling stage terminates rear die sinking.Die sinking process is secondary mould closing oil cylinder 12 oil return, drags dynamic model two plate 3 and fits with dynamic model one plate 4, then make the matched moulds motor 7 be arranged on tailgate 10 drive elbow-bar mechanism 11 to carry out die sinking, then takes out plastic products and can complete the processing of this product molding.
Above-mentioned secondary mould closing mechanism is compared with existing secondary mould closing mechanism; not only make use of elbow-bar mechanism not flexible when dead point state; mold clamping force bears primarily of tailgate 10; can reduce elbow-bar mechanism and the damage of parts driving elbow-bar mechanism; but also make use of the feature that hydraulic jack can provide very large pressure; use secondary mould closing oil cylinder 12 to provide powerful mold clamping force for goods second-compressed, prevent goods from occurring uneven distribution phenomenon.
Accompanying drawing illustrates:
Fig. 1 is the schematic three dimensional views of the two dynamic plate clamping of mechanical hydraulic-pressure type;
When Fig. 2 is the die sinking of injector clamping, the two dynamic plate clamping schematic diagram of mechanical hydraulic-pressure type;
Fig. 3 is that toggle link stretches, when mould closes, and the two dynamic plate clamping schematic diagram of mechanical hydraulic-pressure type.
Fig. 4 is injector secondary mould closing when completing, the two dynamic plate clamping schematic diagram of mechanical hydraulic-pressure type.
Fig. 5 is injector secondary mould closing when completing, the connection diagram of the two dynamic plate of the two dynamic plate clamping of mechanical hydraulic-pressure type.
Detailed description of the invention:
Below in conjunction with accompanying drawing, this patent is explained in further detail.
Fig. 1 is the overall mould-matching structure sketch of this patent, i.e. the structure diagram of the two dynamic plate clamping of mechanical hydraulic-pressure type, and main components comprises solid plate 1; cover half (tool) 2, dynamic model two plate 3, dynamic model one plate 4; mode transfer motor 5, mode transfer motor gear 6, matched moulds motor 7; mode transfer pinion 8, mold adjusting gear ring 9, tailgate 10; elbow-bar mechanism 11; secondary mould closing oil cylinder 12, dynamic model (tool) 13, piston rod piece 14 and pull bar 15.
Fig. 2 and Fig. 3 is the schematic diagram of a whole matched moulds.As Fig. 2, according to the individual distance between moving platen (comprising dynamic model two plate 3 and dynamic model one plate 4) and solid plate 1 of mould size adjustment, mode transfer motor gear 6 is driven by mode transfer motor 5, be delivered to mold adjusting gear ring 9 again, drive four mode transfer pinions 8 by mold adjusting gear ring 9 again, make moving platen reach precalculated position; As Fig. 3; after mode transfer completes; elbow-bar mechanism 11 is driven by matched moulds motor 7; elbow-bar mechanism 11 is stretched; mould closes; complete a matched moulds, now, elbow-bar mechanism 11 is stretched; toggle link gets to dead-centre position; mould needs mold clamping force to directly act on tail template, can reduce elbow-bar mechanism and the damage of parts driving elbow-bar mechanism like this, extend the life-span of clamping; and in the process; the piston of secondary mould closing oil cylinder 12 is all the time near tail template 10 direction, and dynamic model one plate 4 and dynamic model two plate 3 are close to, and are not separated mutually.
Fig. 4 and Fig. 5 is the sectional view of the schematic diagram that completes of secondary mould closing and secondary mould closing oil cylinder 12.As Fig. 4; secondary mould closing provides power by secondary mould closing oil cylinder 12; promoting dynamic model two plate 3 makes mould compress further; mold cavity diminishes, and complete goods preparation, such secondary mould closing completes smoothly; this process utilizes oil cylinder can provide the feature of large pressure; complete secondary mould closing process, can energy be saved thus, protection of the environment.
Claims (1)
1. the two dynamic plate secondary mould closing device of precise injection machine mechanical-hydraulic, it comprises, and machine cover half is pulled, dynamic model one plate, dynamic model two plate, tailgate, mode transfer motor, mode transfer motor gear, mold adjusting gear ring, mode transfer pinion, matched moulds motor, elbow-bar mechanism, secondary mould closing oil cylinder, fixed mold and moving mold; Solid plate coordinates with fixed mold to be installed, and moving mold is arranged on dynamic model two plate, and dynamic model one plate is connected by secondary mould closing oil cylinder with dynamic model two plate, and the elbow-bar mechanism dragging dynamic model one plate and dynamic model two plate is connected on dynamic model one plate; Mode transfer motor and matched moulds motor are arranged on tailgate, for the mode transfer motor gear of adjusting template spacing, mode transfer pinion and mold adjusting gear ring; Tailgate, dynamic model one plate, dynamic model two plate and solid plate are connected by pull bar; The two dynamic plate secondary mould closing device of described precise injection machine mechanical hydraulic-pressure type performs matched moulds twice: matched moulds occurs in plastic phase for the first time, first the matched moulds motor be arranged on tailgate drives elbow-bar mechanism, toggle link is stretched, toggle link promotes dynamic model one plate and dynamic model two plate, fixed mold and moving mold are closed, for the first time in matched moulds process, the piston of secondary mould closing oil cylinder is all the time near tailgate direction; Then melt injection is carried out, after having injected Deng melt, the two dynamic plate secondary mould closing device of described precise injection machine mechanical hydraulic-pressure type carries out second time matched moulds, now, melt enters die cavity, the secondary mould closing oil cylinder be arranged on dynamic model one plate starts to provide pressure, and it is closed that promotion dynamic model two plate makes mould compress further, makes mold cavity change to the equirotal state with goods; Cooling stage terminates rear die sinking, and die sinking process is the oil return of secondary mould closing oil cylinder, and dragging dynamic model two plate and dynamic model one plate are fitted, then makes the matched moulds motor be arranged on tailgate drive elbow-bar mechanism to carry out die sinking, takes out plastic products and completes the processing of this product molding.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310069847.0A CN103128941B (en) | 2013-03-05 | 2013-03-05 | Mechanical-hydraulic type double-movable-plate secondary mould closing structure of precise injection molding machine |
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| CN201310069847.0A CN103128941B (en) | 2013-03-05 | 2013-03-05 | Mechanical-hydraulic type double-movable-plate secondary mould closing structure of precise injection molding machine |
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| CN103128941A CN103128941A (en) | 2013-06-05 |
| CN103128941B true CN103128941B (en) | 2015-07-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103496126A (en) * | 2013-10-06 | 2014-01-08 | 黄时来 | Secondary mold locking device of plastic injection molding machine |
| CN106393561A (en) * | 2016-12-13 | 2017-02-15 | 天津飞捷科技有限公司 | Method for environmentally friendly preparing renewable storage battery shell by using ABS plastic casing of recovered medical equipment |
| CN111421758A (en) * | 2020-04-30 | 2020-07-17 | 贵州省材料产业技术研究院 | High-precision foaming product injection molding method and injection molding machine |
| CN115179516A (en) * | 2022-06-16 | 2022-10-14 | 西诺控股集团有限公司 | Integrated digital hydraulic cylinder precision control mold opening and closing device of injection molding machine |
| CN115609876A (en) * | 2022-10-26 | 2023-01-17 | 北京化工大学 | Mould capable of stepless adjusting cavity volume |
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| CN2702841Y (en) * | 2004-04-26 | 2005-06-01 | 吉林大学 | Injection-compression precision moulding device used on ordinery injection machine |
| CN101992532B (en) * | 2010-10-29 | 2014-04-02 | 华南理工大学 | System and method for automatically regulating clamping force of motor-driven injection molding machine |
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Inventor after: Zhang Yajun Inventor after: Jin Zhiming Inventor after: Zhou Gang Inventor after: Zhou Wanchang Inventor after: Cai Hengzhi Inventor after: Zhuang Jian Inventor after: Li Xiaowei Inventor after: Yang Yuguang Inventor after: Wang Xinliang Inventor after: Wang Chaohua Inventor before: Zhang Yajun Inventor before: Zhuang Jian Inventor before: Li Xiaowei Inventor before: Yang Yuguang Inventor before: Wang Xinliang Inventor before: Zhou Gang Inventor before: Wang Chaohua Inventor before: Jin Zhiming |
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Free format text: CORRECT: INVENTOR; FROM: ZHANG YAJUN ZHUANG JIAN LI XIAOWEI YANG YUGUANG WANG XINLIANG ZHOU GANG WANG CHAOHUA JIN ZHIMING TO: ZHANG YAJUN ZHOU GANG ZHOU WANCHANG CAI HENGZHI ZHUANG JIAN LI XIAOWEI YANG YUGUANG WANG XINLIANG WANG CHAOHUA JIN ZHIMING |
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Granted publication date: 20150708 Termination date: 20170305 |