38results about How to "Shorten mold opening time" patented technology

The invention provides an aluminum alloy gear shifting hub casting defect control method and belongs to the technical field of liquid metal forming. The aluminum alloy gear shifting hub casting defectcontrol method comprises the steps of detecting the casting temperature in the actual casting die opening process to obtain a casting temperature field; conducting defect detection on actually cast aluminum alloy gear shifting hub casting products to obtain shrinkage porosity casting defect forming areas in the actual casting process; establishing a casting process finite element simulation analysis model, simulating the gear shifting hub die filling and solidifying process through professional casting simulation software ProCAST, comparing the simulation result with an actual detection result and carrying out necessary correction on parameters; and conducting simulation analysis and optimization on technological parameters such as dies, casting temperatures, die preheating temperatures and casting speeds through the simulation model, and obtaining qualified castings with the aluminum alloy gear shifting hub casting shrinkage porosity casting defects improved effectively through trialcasting. Thus, the purposes of improving gear shifting hub casting defects and improving the casting quality are achieved.

The invention relates to a deep-hole plate preparation mold and method. The mold comprises a panel, a stripper plate, a plate A, a push plate, a plate B and a bottom plate which are sequentially arranged from top to bottom; a front mold core and a rear mold core which are matched with each other are respectively arranged at the bottom of the plate A and the push plate, and a slidable device for controlling the opening sequence of a front mold plate and a rear mold plate is arranged around the front mold core and the rear mold core; a front mold insert and a rear mold core which are matched with each other are respectively arranged in the front mold core and on the plate B; and when the mold is closed, the front mold insert and the rear mold core are matched with each other in the front mold core and the rear mold core, and a cavity for containing a deep-hole plate product to be formed is formed between the rear mold core and the front mold insert. According to the structure of the mold, demolding separation of the deep-hole plate product from the rear mold core is facilitated; and the production time is shortened, the production efficiency is improved, and the production cost is reduced.

The invention relates to the technical field of injection molding machines and discloses a reverse control method for neutron action of an injection molding machine. The reverse control method comprises the following steps of fixing an injection molding die on the injection molding machine, and then connecting an oil cylinder for controlling neutrons to advance and retreat on the injection moldingdie with a hydraulic system of the injection molding machine; switching a control panel of the injection molding machine to a neutron function setting interface, and selecting a use option in the reverse setting of the neutrons; executing the advancing action of the neutrons by using injection molding machine controller programs, absorbing by using a valve for controlling the neutrons to retreat,and driving the neutrons to retreat by using the oil cylinder; or performing the neutrons retreating action by using the injection molding machine controller programs, absorbing the oil by using a valve for controlling the neutrons to advance, and driving the neutrons to advance by using the oil cylinder. The reverse control method disclosed by the invention has the advantages that the injectionmolding machine has the neutron reversing function, and a high-pressure oil pipe does not need to be exchanged, so that personal security is ensured; and in addition, information interference to othermolds is avoided.

The invention discloses a mold with an oscillating rotating mechanism. The mold comprises a fixed die and a movable die, wherein the fixed die comprises a panel, a fixed die frame and a fixed die core, the movable die comprises a soleplate, a movable die frame, a movable die core and an ejection mechanism, a product forming cavity is formed on the junction of the fixed die core and the movable die core, and an oscillating rotating mechanism is arranged in the fixed die core. Two insert blocks (an oscillating core pulling mechanism and a core pulling block) for forming an arc handle and a lock position of a finished product are assembled together, the two insert blocks are driven to oscillate by the panel in mold stripping, the two insert blocks are separated from the product, the separation can be completed by one step, and the die sinking time can be saved; the mold is simple in structure and small in size and can be formed through a small-tonnage injection molding machine. The cost is low, the yield can be improved by one third for each time compared with that of the traditional product, and the production efficiency is high. The mold belongs to the technical field of molds.

The invention relates to a curtain wall center-pillar beam connection method. A first mounting hole is longitudinally and penetratingly arranged on a beam. The connection method comprises the following steps: (1) acquiring stub bars, shared the same structure with a to-be-mounted beam, as mounting auxiliaries with second mounting holes; (2) manufacturing connecting bolts; (3) acquiring bolts matching with a third mounting hole; (4) placing mounting auxiliaries at the mounting positions of the beam of the center pillar, inserting each connecting bolt into corresponding second mounting holes, screwing the bolts into a third mounting hole so as to fix the connecting bolts on the center pillar; (5) longitudinally pulling out and removing the mounting auxiliaries; and (6) inserting the to-be-mounted beam on the connecting bolts. The connecting bolts comprise a beam connecting portion and a bolt mounting portion, the beam connecting portion is matched with the first mounting hole of the beam, and the third mounting hole is arranged on the bolt mounting portion. The invention further relates to a curtain wall center-pillar beam connecting device.

The invention relates to an environment-friendly polyurethane adhesive used for bonding a granulated cork. The invention is characterized in that the environment-friendly polyurethane adhesive consists of MDI, modified MDI, polyether glycol, an antiaging agent and a polymerization inhibitor; according to the mass percentage, the proportion of the MDI, the modified MDI, the polyether glycol and the antiaging agent is 20-30:30-40:30-40:1-5, and the addition of the polymerization inhibitor is 10PPM. When in use, the adhesive and the granulated cork are mixed according to the mass proportion of 1:10-1:5. The adhesive is inodorous and environmentally friendly and can be used at different seasons. When the adhesive is used for bonding the granulated cork, the mold opening time is greatly shorter than the TDI adhesive, and the product property is good.