6 results about "Double injection" patented technology

Disclosed are a die casting machine with single and double injection, and a method for designing a front plate thereof. The die casting machine with single and double injection includes a front plate, an injection lower frame, and an injection module. The front plate and the injection lower frame are fixed and spaced apart. If a quantity of the injection module is one, the injection module is mounted in the middle of the injection lower frame and is matched with a connector in the middle of the front plate. If a quantity of the injection modules is two, the injection modules are symmetrically mounted at two sides of the injection lower frame and are matched with connectors at two sides of the front plate respectively. The method for designing a front plate is used to design the front plate of the die casting machine with single and double injection.

The present application relates to the technical field of silicone rubber cold shrink cable accessory preparation, in particular to a silicone rubber cold shrink cable intermediate joint material and a preparation method thereof. The present application overcomes the problems of interface electric breakdown, gripping force attenuation, breathing effect and sealing failure caused by thermal expansion and cold shrinkage of the cold shrink cable joint due to physical stacking. By adopting methyl vinyl silicone rubber and ternary ethylene-propylene rubber blending matrix, introducing vinyl MQ silicone resin hard segment and polyether modified silicone oil dynamic sealing component; preparing nano boron nitride, aluminum hydroxide and magnesium oxide composite functional filler through liquid phase impregnation modification process, and realizing rubber densification by high vacuum dynamic mixing; adopting double barrel synchronous double injection molding process, periodic pressure maintaining pulse is applied at the interface to induce in-situ addition reaction; after demolding, simulated cable core rod load secondary vulcanization is performed. The interface peeling strength, breakdown strength and interface pressure maintenance rate are improved, ensuring the long-term sealing and insulation reliability of the joint in extreme environment.

The present disclosure relates to a paintless metallic polypropylene resin composition with improved flow marks and a molded article thereof. The paintless metallic polypropylene resin composition of the present disclosure minimizes shear stress generated by voids and possesses high viscoelasticity, thereby inducing smooth flow of recycled material and preventing the occurrence of flow marks in the molded article. Furthermore, workability and aesthetics may be excellent when using the paintless metallic polypropylene resin composition of the present disclosure for double injection molding.

This invention discloses a dual-needle, low-power fluctuation regulating impingement turbine nozzle, belonging to the field of hydropower technology. In this device, a nozzle orifice is provided at the axial front end of the nozzle housing; a main nozzle is axially movable within the nozzle housing; a main nozzle drive mechanism drives the main nozzle to move slowly axially to perform slow coarse adjustment of the annular flow area within the nozzle orifice; a small nozzle is coaxially and axially movable relative to the main nozzle within the main nozzle; a small nozzle drive mechanism drives the small nozzle to move rapidly axially to perform rapid fine adjustment of the annular flow area within the nozzle orifice. This invention enables rapid and precise fine-tuning of the unit's output power, improving the unit's frequency regulation capability and its support for the power grid.

Disclosed are a die casting machine with single and double injection, and a method for designing a front plate thereof. The die casting machine with single and double injection includes a front plate, an injection lower frame, and an injection module. The front plate and the injection lower frame are fixed and spaced apart. If a quantity of the injection module is one, the injection module is mounted in the middle of the injection lower frame and is matched with a connector in the middle of the front plate. If a quantity of the injection modules is two, the injection modules are symmetrically mounted at two sides of the injection lower frame and are matched with connectors at two sides of the front plate respectively. The method for designing a front plate is used to design the front plate of the die casting machine with single and double injection. The present disclosure has the following beneficial effects: compared with two traditional die casting modes with independent single injection and with independent double injection, the present disclosure can achieve a single injection mode and a double injection mode only by changing the quantity of injection modules, and can be adjusted according to actual production needs. Thus, the application scope of the present disclosure can be effectively improved, and production cost can be effectively reduced.