51results about How to "Shorter injection molding cycle times" patented technology

A modularized cold runner system relates to an injection molding die of a colder runner. The system can effectively isolate heat exchange between a high-temperature mold cavity and a low-temperature cold runner system, maintain heat balance of the whole modularized cold runner system, always keep low-temperature flow, prevent materials from being heated and vulcanized in the flow channel, and achieve molding for products without the runner. The system is good in controllability and versatility. The system is provided with, from top to bottom, a stationary mold base plate, a sprue bush, a cylinder installing plate, a cylinder, a cold runner plate, a heat isolation plate, a heating plate, a fluid modulation apparatus, a conicity locating piece, pressure blocks, a water-cooled needle-valve nozzle and a quickly-changed clamp, wherein the stationary mold base plate, the cylinder installing plate, the cold runner plate, the heat isolation plate and the heating plate are sequentially arranged from top to down and fixedly connected through fasteners.

The invention provides an automatic-ejecting-out injection mold for a dust guard. The automatic-ejecting-out injection mold for the dust guard comprises a mold core assembly, a half block, an upper mold plate, a lower mold plate, an upper mold fixing plate and an ejecting-out assembly. The mold core assembly comprises an upper mold core, a lower mold core and a movable middle mold core, wherein the upper mold core is installed on the upper mold plate which is installed on the upper mold fixing plate, the lower mold core is installed on the lower mold plate, and the movable middle mold core is arranged in the lower mold core. The half block which is arranged around the mold core assembly and matched with the mold core assembly is arranged on the periphery of the mold core assembly, a cavity is formed by the gap between the mold core assembly and the half block, and the upper mold core is provided with a rubber injection hole communicating with the cavity. The ejecting-out assembly comprises an inner ejecting-out mold core, an ejector pin panel and an ejector pin bottom plate, wherein the inner ejecting-out mold core is arranged in the movable middle mold core; the top end of the inner ejecting-out mold core abuts against the upper mold core; the ejector pin panel is located under the lower mold pate; the bottom end of the inner ejecting-out mold core is connected with the ejector pin panel; and the ejector pin panel is installed on the ejector pin bottom plate. The automatic-ejecting-out injection mold for the dust guard can realize automatic production, prolong the service life, and shorten the injection molding period for products.

The invention relates to the technical field of metal terminal embedded type injection molding of a connector of an electronic product, in particular to a small terminal and feed belt integrally embedded type injection mould. The mould is characterized in that the small metal terminal and a feed belt are put into a male mould of the injection mould; and a product is formed through the injection molding of a matched mould of a female mould of the injection mould. The injection mould mainly solves the problems that in the small terminal and feed belt embedded type injection mould, the small terminal has long placement time to cause longer injection molding cycle; therefore, the technical problems of low product production capacity and high manufacturing cost are overcome; and the small terminal and feed belt integrally embedded type injection mould has strong universality and reliable performance.

The invention discloses a demolding device of an injection mold of thread products and the injection mold. The demolding device of the injection mold of thread products comprises a rack, a drive gear group, a drive shaft and a reversing gear group, wherein the rack is arranged on the injection mold; the drive gear group comprises at least two drive gears which are meshed sequentially, and one drive gear is meshed with the rack; the drive shaft is connected with and liked with the other drive gear in the drive gear group; the reversing gear group comprises at least two reversing gears which are sequentially meshed, wherein one reversing gear is connected with and linked with the drive shaft, and the other reversing gear is connected with and linked with the drive shaft of the injection mold. The demolding device is compact in structure, is convenient to operate, operates stably, is high in production efficiency, and has production advantage and economic benefit compared with a traditional common motor, the hydraulic control and servo motor control.

The invention provides a high crystallization rate polyamide with a crystallization peak half-peak width Delta T1/2 of 6-12DEG C. The high crystallization rate polyamide is composed of a repeat unit formed by dicarboxylic acid and diamine. The high crystallization rate polyamide is composed of a repeat unit derived from the following: (a) aromatic diacid and aliphatic diacid; (b) 1, 10-diaminodecane and aliphatic diamine with a carbon atom number of 2-13 except 1, 10-decanediamine; wherein, the aromatic diacid accounts for 70-100mol% of (a), and 1, 10-decanediamine accounts for 70-100mol% of (b). The high crystallization rate polyamide provided by the invention has high crystallization rate, shortens the injection molding period of the material, and improves the production efficiency. Theinvention also provides a preparation method of the polyamide, the method has the characteristics of simple operation, cheap and easily available raw materials, and is suitable for large-scale production. Nucleating agent and other additives capable of improving the polyamide crystallization rate are not added, and the influence on the basic properties of polyamide is little.

The invention relates to a hydrotalcite-containing stiffening nucleating agent composition and also relates to a thermoplastic plastic containing the nucleating agent composition and particularly relates to nylon containing the nucleating agent composition. The nucleating agent composition contains di-[4-tert-butyl benzoic acid]hydroxyl aluminium in a weight ratio of (5:1)-(1:5). The nucleating agent composition has a better nucleating effect, and the obtained nylon product has high tensile and bending strength, low loss of impact strength, good heat resistance and the like. By adopting the nucleating agent provided by the invention, the demoulding property in the nylon processing process is improved, the injection moulding cycle is shortened, and the production efficiency is improved; and moreover, the dimensional stability of the product is higher, the shrinkage is reduced, and the mechanical properties, product transparency and heat-resistance temperature of the product are improved.

The invention relates to an automobile tailgate material and a preparation method thereof, in particular to an automobile all-plastic tailgate outer panel material and a preparation method thereof. The material of the present invention comprises the following components in parts by weight: 50-70 parts of polypropylene, 10-40 parts of reinforcement, 3-15 parts of toughening agent, 0.2-1 part of bridging agent, and 3-10 parts of compatibilizer , 0.2-0.5 parts of nucleating agent, 0.3-1 part of antioxidant, and 0.3-1 part of lubricant. The invention adopts low specific gravity and high strength organic fiber as polypropylene molecular chain motion inhibitor, limits the thermal expansion of polypropylene material, prepares high strength polypropylene material with low linear thermal expansion coefficient, and meets the requirements of automobile all-plastic tailgate material. At the same time, the weight of the car has been realized. In addition, the present invention has the characteristics of high flow, no floating fibers, high appearance, easy spraying, low warpage and rapid prototyping, which reduces the assembly and manufacturing costs of parts; it also has the characteristics of low odor and low VOC, which can effectively improve the interior air quality.

The invention discloses a manufacturing method of a shell of a motor stator. The method comprises the steps of: a, overlying and fixing a plurality of silicon steel sheets as a silicon steel sheet assembly; b, carrying out injection moulding on the silicon steel sheets with plastic to form a silicon polar framework of the motor stator, wherein the silicon polar framework of the motor stator comprises a plastic circular framework and a plurality of silicon steel sheet assemblies, the plastic circular framework is an integral framework or formed by two or more than two arc-shaped frameworks, and the silicon steel sheet assemblies are arranged circumferentially along the plastic circular framework; each silicon steel sheet assembly is fixedly connected with the plastic circular framework, a plastic separation fence of the plastic circular framework is arranged between the adjacent silicon steel sheet assemblies, and the outer side of each silicon steel sheet assembly is at least partially exposed to the circumferential wall of the plastic circular framework; and c, placing the silicon framework of the motor stator into a shell module of the motor stator, and then carrying out injection moulding with the plastic to form the integral shell of the motor stator. According to the manufacturing method of the shell of the motor stator provided by the invention, the silicon steel sheet assemblies are accurately positioned, and the production cost is low.

The invention discloses an external induction heating device of a vertical injection mold, and belongs to the technical field of injection molding. The external induction heating device comprises an injection molding device, a clamping device and a high-frequency heating device. Local heating is performed on the surface of a mold core by the aid of a skin effect in an induction heating mode. The external induction heating device is novel in structure, ingenious in design, high in heating and cooling efficiency, short in working period, convenient to control and adjust, high in adaptability, capable of saving manufacturing and machining costs and remarkable in effect.

The invention provides a secondary buckling part molding angle-ejection device and an injection mold and relates to the technical field of injection molds. The secondary buckling part molding angle-ejection device comprises an angle ejection head, an angle ejection rod and a buckling part molding insert pin. The angle ejection rod is connected with the bottom of the angle ejection head. The frontof the angle ejection head is provided with a molding groove, and the back of the angle ejection head is provided with an insert pin jack, which penetrates through the angle ejection head and is communicated with the molding groove. The buckling part molding insert pin is detachably arranged at one side of the angle ejection head, far from the molding groove. An end portion of the buckling part molding insert pin is inserted into the insert pin jack from the back of the angle ejection head and extends into the molding groove. According to the secondary buckling part molding angle-ejection device, through the integrated structure, the buckling part and the buckling groove can be molded at a time, thereby reducing processing and material costs. Meanwhile, there is no need to separately drivedifferent molding mechanisms, the injection moulding period is shortened, and abnormity of combining different mechanical parts is avoided.

The invention discloses a high-performance PET (Polyethylene Terephthalate) composite material capable of being applied to medium and low mold temperature rapid crystallization molding and a preparation method of the PET composite material and relates to the technical field of high polymers. According to the technical scheme, the PET composite material is formed by the following components in percentage by weight: 40-55% of PET, 0.2-1% of a coupling agent, 1-8% of a flexibilizer, 0.3-5% of a compound nucleating agent, 9-15% of a compound flame retardant, 0.2-0.6% of an antioxidant, 0.5-1.5% ofother additives and 20-45% of alkali-free glass fiber yarns. Compared with the traditional PET material, the high-performance PET composite material prepared by the invention has the advantages thatthe injection molding cycle of the PET material is greatly shortened, and the material has excellent mechanical property and excellent toughness and heat resistance and can meet novel market requirements.

The invention relates to the field of injection molding equipment, in particular to automatic taking out and burying equipment for special-shaped part injection molding. The automatic taking out and burying equipment for special-shaped part injection molding comprises a middle rotary table, an injection molding machine, a top beam frame arranged above the injection molding machine, a turnover mechanism, a lifting mechanism and a first servo electric cylinder arranged at the top of the top beam frame, wherein the middle rotary table is arranged at the periphery of the injection molding machine;a sliding beam matched with the top beam frame at a right angle is arranged on the top beam frame; the sliding beam can move back and forth between the injection molding machine and the middle rotarytable through the first servo electric cylinder; the lifting mechanism is movably arranged at the other end of the sliding beam through a second servo electric cylinder; the turnover mechanism is arranged on the output end of the lifting mechanism; the output end of the turnover mechanism is provided with a support beam; two sides of the support beam are respectively provided with a material taking plate and a buried plate, the material taking plate is movably matched with a support beam through a cylinder sliding table; and the bottoms of the material taking plate and the buried plate are respectively provided with a plurality of clamps and material suction clamps. According to the automatic taking out and burying equipment for special-shaped part injection molding, the safety risk caused by manual part taking and burying is avoided, and the production efficiency is improved.

The invention relates to an injection mould core cooling device. The injection mould core cooling device comprises a slender-type core, a ladder blind hole, a drainage column, a through hole, a waterinlet, a water outlet, a water inflow hole, a water outflow hole, a water inflow pipe, a locating pin, a seal ring and a disassembly and assembly threaded hole; the ladder blind hole coaxially placedis formed in the bottom of the core; the drainage column is arranged at the opened end of the ladder blind hole and is located through a hole shoulder; the through hole vertically placed is formed inthe surface of the drainage column; the water inlet and the water outlet are correspondingly formed in the surface of the core and are correspondingly placed at the two ends of the through hole; the water inflow hole and the water outflow hole are correspondingly formed in the inner end of the drainage column and are intersected with the through hole; the water inflow pipe is arranged in the ladder blind hole; one end of the water inflow pipe is arranged in the water inflow hole; one end of the locating pin is arranged on the drainage column; the other end of the locating pin is arranged in the core; the seal ring is arranged on the surface of the drainage column and is located between the through hole and the locating pin; the disassembly and assembly threaded hole is formed in the outerend of the drainage column; and a gap which corresponds to the cross section of the through hole and is placed towards the direction of the water inlet is formed in the water inflow pipe. The injection moulding cycle can be shortened, the quality of products is improved, and the injection mould core cooling device is simple in structure, small in size, convenient to machine and convenient in disassembly and assembly.

The invention discloses a production device for an automobile large injection molding part. The production device comprises a material conveying device, an injection molding device and a cooling device, wherein the material conveying device comprises a workbench, a material storage box, a material suction machine, a second supporting frame and a second conveying pipe, the injection molding deviceis arranged on the left side of the workbench, the injection molding device comprises an injection molding machine, a drying machine, a motor, a first supporting frame, a rotating rod and a mold, andthe cooling device is arranged on the left side of the injection molding device; and the cooling device comprises a water storage tank, a booster pump, a first conveying pipe and a spray head. The quality risks of weld marks and buckling deformation caused by abnormal mold temperature in the production process are greatly reduced, the quality stability of long-term production is guaranteed, the reject ratio is reduced, unnecessary invalid waiting time is shortened, further, the injection molding cycle is shortened, meanwhile, a manipulator is adopted for taking the product, thus the productioncycle is further shortened, and production efficiency is improved.

The invention discloses a multifunctional jig for metal implanting and product withdrawal. The multifunctional jig comprises a positioning jig and a capturing jig, wherein the capturing jig comprisesa product absorption mechanism and a metal sheet implanting mechanism. Through matched using of the positioning jig and the capturing jig, three main steps of capturing a to-be-processed metal piece,withdrawing a formed product from a high-temperature mould and burying the to-be-processed metal piece into the high-temperature mould is rapidly completed. The multifunctional jig is implemented viathe specific working processes of: manually putting the to-be-processed metal piece into the positioning jig, absorbing the to-be-processed metal piece from the positioning jig by the capturing jig, enabling the capturing jig to approach to the high-temperature mould, after the high-temperature mould is opened, absorbing the formed product from the mould by the capturing jig; and putting the to-be-processed metal piece into the high-temperature mould by the capturing jig. The capturing jig is connected with an automatic manipulator, and the positioning jig is put at a place far away from the high-temperature mould, so that the process of withdrawing products and putting metal pieces can be replaced, operation is carried out automatically, and then operation is safe, reliable, efficient andaccurate.