Construction situation of large clamping unit of injection molding machine generally boils down to three types: (1) the hyperbolic elbow type mechanical clamping structure; (2) two plate single cylinder straight pressure type clamping structure; (3) the two plate four cylinder supercharged clamping structure. The situation in the construction of the clamping unit in Europe, America, Japan and other advanced industrial countries of the injection molding machine production industry after 20 years of optimization selection and practical, on the basis of existing conclusions: hyperbolic elbow type mechanical clamping structure belongs to type out. Its low energy consumption, structural simplicity, high cost, container fittings but under heavy load have intense mechanical friction, cause the machine to run the inherent accuracy over a period of time after use, it has great influence, absolute protection of capital is higher also. Two plate single cylinder direct pressure type clamping with two board four cylinder supercharged clampi
ng two tectonic situation, each have actor defect. Two board four cylinder supercharged clamping structure strength: regardless of the elder brother Lin Zhu with low pressure clamping cylinder piston rotary is taken between may embrace jewels cohesion, in the open mold, elder brother Lin Zhu from fixed template. Container fittings, therefore, positive into the mode of operation can be completed. Virtually dropped by the request of plant height, is a very desirable advantages; Dynamic template structure simple, the absolute, clamping part of the overall weight contrast light, inconvenient transportation and hoisting; Ejector mechanism on the opposite side of the template, the space is not subject to any restrictions, device, assembly and culture are more inconvenience; Absolutely simple structure, so the cost is definitely expensive. Defects: four cylinder due to the limited by the shape of template size, and cant do is very big, and can effectively place clamping force is limited to four cylinder piston ring area. 2520 stainless steel pipe related to the effective area of single cylinder structure, the effective area is not big enough. In order to reach the additional clamping force, only to low voltage clamping pressure increasing to 280-320 kg/cm2, even 350 kg/cm2. This shape of oil cylinder position tolerances, surface brightness, the overall quality and the quality of the seals have to match mean request. Now, Chinas manufacturing level is difficult to reach the request, so the two plate cylinder supercharged four clamping large injection molding machine, extensive low-voltage leakage problems, unable to complete processing. This is a big death weakness of the structure. About brother Lin Zhu with fixed template low pressure clamping cylinder to rotate cohesion between four cylinder clamping structure, container fittings because suffer screw effective area of clamping force is reduced by half, the pressure is too big, easy cause the screw to break even 1 cor stigma of fracture. This case is no surprise. Shift molar space, it is necessary to complete by the variable. It is about hydraulic clamping injection molding machine, a lack of place. Two plate single cylinder direct pressure type clamping structure strength: dynamic templates without elder brother Lin Zhu guidance, head, junior two yards parallelism of mould surface can be carried out within the certain scale dispensing casually, and therefore can regulate to almost absolute parallel levels, is helpful to precise molding. Unlock travel distance is not affected by tectonic constraints, can according to the process need, increase the lock mode. This is the greatest strength of hydraulic clamping injection molding machine, container fittings and bent elbow type mechanical clamping injection molding machine is the most important weakness. Do not need to mold frame, with the help of the fine sensing techniques, within all molar space scale, can rapidly locate itself, nut, low voltage clamping. All measures continue, correct, fast and agile.
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How to structure the container in the injection molding industry?
Release time：2016-02-23
