52results about How to "Fast injection molding" patented technology

A die casting machine that suppresses the occurrence of surge pressure, prevents the occurrence of burrs and spouting of molten metal, and further minimizes variations in the quality of a molded product on site.

The die casting machine comprises a mold (101) that cast-molds a product, an injection cylinder (102) for injecting molten metal (15) to the mold, and a hydraulic device (103) for pressing under high pressure the injection cylinder. The hydraulic device comprises a piston ACC (20) that supplies hydraulic oil to press under pressure a piston (13) of the injection cylinder (102) and an injection cylinder inlet valve (31). The piston ACC comprises a high pressure fast pressure-raising piston accumulator (22, 322) and a low-pressure injection piston accumulator (21, 321).

The invention relates to the field of PET (Polyethylene Terephthalate) copolymer and particularly relates to a continuous polymerization preparation method of a fast crystallized and flame-retardant PET copolymer. On a continuous polymerization production line of flexible modified polyester, the fast crystallized and flame-retardant PET copolymer is continuously prepared by a novel short-flow continuous polymerization device comprising an esterification kettle, a pre-shrinking kettle and a final polycondensation kettle. The method has the advantages of low energy consumption in the preparation process, high yield and good stability of the quality, the large-scale industrial production is achieved and the products have strong market competitiveness.

The invention discloses an anti-blocking injection molding machine is characterized in that an injection molding gun barrel is welded to one end of a supporting entering box, a conveying auger is welded to the side end of a movable transmission rod, a movable supporting barrel is welded to one end of a clamping sealing block, a reset spring is welded to one end of the movable supporting barrel, and an auxiliary moving block is welded to the bottom end of the supporting entering box; and a driving rack is welded to one end of the auxiliary moving block, a cleaning plate is rotationally connected to one end of a sliding moving plate, a pushing electromagnet is installed on the inner side of a sliding cavity, a pushing spring is welded to one end of the inner side of the sliding cavity, and an anti-blocking column is welded to one end of the pushing spring. The conveying auger and a reverse flow preventing threaded column drive a raw material to move and prevent the raw material from backflow, the hollow situation is avoided, and a contact switch controls the opening and closing of the pushing electromagnet, so that the anti-blocking column can be quickly reset when needing to be reset, and the discharge port is sealed while the requirement for discharging solidified raw materials at the discharge port position is met.

The invention provides a pen core plastic mould for electronic pens. 4 identical cavity groups are distributed in the shape of a Chinese character ''tian'' on a cavity plate, and are communicated by an H-shaped main flow channel. Each cavity group is provided with 8 equal-sized cavities that are arranged side by side in parallel along the vertical direction, every two cavities form a unit, and the two cavities of each unit are communicated with a first sub-flow channel, the first feeding gate of every two first sub-flow channels is communicated with a second sub-flow channel, and the second feeding gates of two second sub-flow channels are communicated with a third sub-flow channel, the center of which is provided with a third feeding gate. Through intercommunication of the first sub-flow channels, the second sub-flow channels and the third sub-flow channel, injection molding of the 32 cavities can be completed simultaneously. Injection molding can be completed at the same time of guaranteeing the amount of plastic entering the cavities. With the advantages of fast injection molding, simple structure and easy maintenance, the mould provided by the invention effectively improves the work efficiency and increases the yield.

The invention discloses an anti-yellowing thermoplastic polyurethane elastomer and a preparation method thereof. The polyurethane elastomer has shore hardness of 60 to 75 A. The polyurethane elastomeris prepared from the following raw materials: polyester glycol, 1,4-butanediol, an anti-ultraviolet absorbent, di(2,2,6,6-tetramethyl-4-pipradrol)sebacic acid ester, 4,4'-diphenylmethane diisocyanate, an antioxidant and a catalyst. According to the anti-yellowing thermoplastic polyurethane elastomer and the preparation method thereof, the shore hardness of the thermoplastic polyurethane elastomeris up to 60 to 75 A, and the injection molding period is effectively shortened, so that a phenomenon of sticking of a mold during processing is avoided. Furthermore, due to addition of the anti-ultraviolet absorbent, the polyurethane elastomer disclosed by the invention is excellent in anti-yellowing property. Moreover, the injection molding period and the intensity of the thermoplastic polyurethane elastomer can be balanced by regulating and controlling the use amount of a catalyst. The preparation method of the polyurethane elastomer is environmentally friendly, economical, high in weatherresistance, high in injection molding speed and high in processing efficiency, and can be widely applied to injection molding of products such as a shoe material, a triangular belt and sheet rubber.

The invention discloses a blow molding nozzle and a blow molding machine, and relates to the technical field of blow molding machine. The blow molding machine comprises a frame body, supporting columns are fixedly installed at the peripheral corners of the outer surface of the lower end of the frame body, a first equipment box is fixedly installed on one side of the outer surface of the upper endof the frame body, a third equipment box is fixedly mounted on one side, located on the first equipment box, of the outer surface of the upper end of the frame body, a second equipment box is fixedlymounted on the side, located on the third equipment box, of the outer surface of the upper end of the frame body, a plurality of visible windows are fixedly mounted on the periphery of the second equipment box, detection box doors are movably installed on the two sides of the middle position of the outer surface of the front end of the third equipment box, and a control radio station is fixedly installed on the outer surface of the upper end of the frame body and located in front of a storage tank. According to the blow molding nozzle and the blow molding machine, fully stirring materials canbe carried out, so that the materials are more viscous, injection molding is facilitated, the fact that injection molding products are quickly cooled is advantageously achieved, and the injection molding on injection molding products is quickly carried out.

The invention discloses an injection device for an injection molding machine. The injection device comprises a main barrel; a charging hopper is arranged at the upper end of the main barrel; an oblique filter screen is arranged in the charging hopper; the upper end of the filter screen is fixedly connected with the inner wall of the charging hopper; the lower end of the filter screen penetrates through an opening in the side wall of the charging hopper and extends to the outer side of the charging hopper; the upper end of the main barrel is fixedly connected with a box body; a strip-type opening corresponding the filter screen in position is formed in the side wall of the box body; a breaking mechanism is arranged in the box body; the breaking mechanism is connected with a driving motor through a transmission mechanism; an axial through hole is formed in the main barrel; the interior of the main barrel is connected with a threaded rod by threads; one end of the threaded rod is connected with a nozzle; the other end of the threaded rod is connected with a driving shaft of a driving motor; and the driving shaft penetrates through the rear side wall of the main barrel and is fixedly connected with the threaded rod. The charging hopper can be effectively prevented from being blocked, rapid injection molding on a mould is realized, and the injection device is convenient to operate.

The invention provides a plastic mold for an electronic pen holder. The plastic mold comprises a static template, a cavity plate and a dynamic template, wherein eight cavities, sprues communicated with the cavities and runners communicated with the sprues are formed in the cavity plate, the overall dimensions of the eight cavities are completely consistent, the eight cavities are arranged in parallel along the horizontal direction, every two cavities are taken as a unit, the two cavities in each unit are communicated with each other through the runner, the runners are communicated with the corresponding sprues, the shape of the cavities is consistent with the shape of the pen holder, sliding chutes are formed in one sides of the cavities, push rods are arranged in the sliding chutes and are opposite to the cavities, and one ends of the push rods are fixed on connecting rods which are connected with piston rods of air cylinders by driving. Through the structure that one runner corresponds to two cavities for simultaneous injection molding, glue entering the cavities is ensured to be equal, and then the air cylinders are adopted for driving the push rods to complete molding. The plastic mold is simple in structure and fast in injection molding, and can increase the yield and effectively improve the working efficiency.

The invention discloses a water-drainage anti-skidding plastic tray and a production process thereof. The water-drainage anti-skidding plastic tray comprises a water-drainage anti-skidding plastic tray body, wherein cross guide slots are formed in the surface of the water-drainage anti-skidding plastic tray body in a crossed mode in a diagonal direction; the inner parts of the cross guide slots are arranged in an inclined mode towards four corners from the center positions; gird lines are arranged on the bottom surface of the water-drainage anti-skidding plastic tray body; in a manufacturing process of an injection mould, an iron gauze layer spreads on the inner bottom surface of a mould cavity of a lower mould block, and a cross block is arranged on the bottom surface of a core block of an upper mould block in the diagonal direction; while the water-drainage anti-skidding plastic tray is poured by the injection mould, grid lines are arranged on the bottom surface of the formed water-drainage anti-skidding plastic tray, and cross guide slots are formed in the top surface, so that water-drainage and anti-skidding processing does not need to manually perform on the water-drainage anti-skidding plastic tray subsequently, time and labor are saved, and injection moulding of the water-drainage anti-skidding plastic tray is quicker.

The invention discloses an elastic casting film. The elastic casting film is composed of 100% of polyester-type thermoplastic polyurethane elastomers and has excellent mechanical properties, good processing stability and quick injection molding formation performance. The elastic casting film has the following advantages that the original retractable elasticity can be improved, the original productshape can be maintained, and after retractable stretching, deformation is small without the function of external force under the static condition; the plasticity of the thin film is high, and moldingcan be conducted according to the shape of a final product; the elastic casting film can be applied to supplies, such as disposable hygiene products, garment supplies and disposable face masks, witha function of stretching a rebound demand structure, the demand for an original high-stretching and small-retraction-deformation structure is met, the safety and structural performance of the productare improved, the daily-increased demand of consumers for safe and fit products with soft skin feeling is met, and the elastic casting film can be applied to disposable pants-type hygiene products, elastic waistlines, outdoor jackets, protection garments and disposable face mask products.

The invention discloses a high-transparency food-grade polypropylene special material. The preparation comprises the following steps: (1) propylene and ethylene raw materials are refined; (2) in a specific catalyst Cat-II and external electron donor D-II system, ethylene and propylene are subjected to a binary random copolymerization reaction in a Unipol process polypropylene device gas phase fluidized bed reactor; (3) a polymerization product is degassed; and (4) polymerization powder and a specific additive are subjected to co-extrusion granulation to obtain the product. According to the high-transparency polypropylene special material and the production method of the high-transparency polypropylene special material in a Unipol gas-phase fluidized bed process, the transparent polypropylene special material obtained by adopting the production formula is green and environment-friendly, does not contain any plasticizer, and has a relatively high melt index and moderate impact strength and flexural modulus.

The invention discloses an automobile door panel injection mold. The automobile door panel injection mold comprises a fixed mold base and a movable mold base. A fixed mold core and a movable mold coreare welded to the upper end of the fixed mold base and the lower end of the movable mold base correspondingly. The top end of the fixed mold core corresponds to the bottom end of movable mold core. Two micro hydraulic cylinders are arranged in the fixed mold core. Ejector pins are connected with output shafts of the two micro hydraulic cylinders. The ejector pins are sleeved with an ejector pin plate. An electromagnetic relay is arranged on the fixed mold base. By arranging the micro hydraulic cylinders controlled by the electromagnetic relay in the fixed mold core, the micro hydraulic cylinders are used for driving the ejector pins of a two-section structure to move up and down in a fixed model base and a cavity, thus, the ejector plate with a large area is used for providing lifting support action force for a door panel model, the door panel model can be quickly separated from the cavity, and the pressure borne by the ejector pins is reduced; and a guide rod fixedly connected with the fixed mold base achieves the support effect for up and down movement of the movable mold core, and the demolding efficiency and accuracy are advantageously improved.

The invention relates to the field of mold manufacturing, and discloses an injection mold capable of achieving quick molding. The injection mold comprises an upper mold base and a lower mold base; aninjection molding liquid tank is arranged in the upper mold base, a male mold cavity is fixedly installed on the lower surface of the upper mold base, a plurality of injection molding pipes are arranged in the male mold cavity, and the tops of the injection molding pipes communicate with the bottom of the injection molding liquid tank; a condensation chamber is arranged at the bottom of the uppermold base, and a plurality of condensation pipes are arranged in the condensation chamber; a transverse baffle is fixedly installed on the top of the condensation chamber and provided with a pluralityof cold air outlets; a female mold tank is arranged on the upper side of the lower mold base and corresponds to the male mold cavity in the vertical direction; and vertical rods which are each of a vertical circular structure are fixedly installed on the two sides of the lower surface of the upper mold base, the two sides of the upper portion of the lower mold base are provided with cylindrical grooves in the mode of corresponding to the bottoms of the vertical rods, a pressing plate is arranged in each cylindrical groove, and two groups of contact heads are arranged on the top of each pressing plate. The injection mold has the advantages that the injection molding speed, the mold opening and closing speed and the working efficiency are high.

The invention discloses an in-mold product injection molding and foaming integrated mold. The in-mold product injection molding and foaming integrated mold is characterized in that an oil pressure valve connected with a needle valve type hot runner is arranged on an injection molding machine, a forming groove formed through surrounding of an annular surrounding table is formed in a parting surface of a cavity, a first-stage forming bulge and a second-stage forming bulge are arranged on a parting surface of a mold core in a corresponding mode, a mold cavity of a product is formed among the forming groove, the first-stage forming bulge and the second-stage forming bulge, the wall surface of the portion, attached to the first-stage forming bulge, of the inner side wall of the forming groove are obliquely arranged downwards and inwards, a first cooling water channel used for cooling the outer side surface of the product is arranged at the position, located on the periphery of the forming groove, in the cavity, gas exhaust passages which can communicate with the forming groove and the outside of the mold are arranged at the positions, located on the two long side edges of the forming groove, in the cavity, a gas extracting device connected with the gas exhaust passages is arranged outside the mold, and gas pins capable of sealing or opening the gas exhaust passages are arranged in the cavity. The invention further discloses an in-mold product injection molding and foaming integrated process.

The invention relates to the technical field of processing of hiking rubber shoes and discloses a hiking rubber shoe processing device capable of increasing injection molding pressure and realizing quick injection molding of cold gaps. The hiking rubber shoe processing device comprises a processing machine; an injection molding box is movably connected to the upper part of the interior of the processing machine; a reset track is movably connected to the interior of the injection molding box; a pressurizing box is movably connected to the upper right portion of the interior of the injection molding box; a charging pipe is movably connected to the right side of the exterior of the injection molding box; a connecting pipe is movably connected to the left side of the pressurizing box; a movable rail is movably connected to the lower portion of the injection molding box; and an injection molding rail is movably connected to the lower portion of the movable rail. A plastic pipe enters a moldthrough injection molding, is injected into the mold along with raw materials and is connected with a water pressure tank through a pressurizing water pipe; water is introduced into the reset rail through the pressurizing water pipe, so that the pressure during injection molding is further increased, thus the effect of increasing the pressure during injection molding is achieved, and bubbles andthe like generated during injection molding are reduced.

The invention discloses high-precision mold equipment with informatization and digitization functions, and belongs to the technical field of molds. A plurality of heating plates are distributed in a heating cavity of a lower mold at intervals, the heating plates, a temperature sensing section layer and a heat conduction pad are matched to conduct heat for a female mold cavity, and temperature sensing memory deformation bodies are arranged in the temperature sensing section layer; a plurality of temperature sensing memory deformation bodies are used for sensing the temperature of each position in the heating cavity, when the temperature of a certain position does not reach a preset heating temperature, a heating wire at the position is in a heating state, so that the temperature of each position of the heating cavity is increased and is consistent; and when the temperature sensing memory deformation bodies sense that the temperature of the certain position exceeds the preset temperature, the temperature sensing memory deformation bodies stretch due to high-temperature deformation, contact pieces are pushed to be disconnected after stretching, a heating wire at the position is closed at the moment, the situation that the local temperature is too high due to continuous heating is avoided, the temperature is precisely regulated and controlled in real time through one-to-one cooperation between the plurality of temperature sensing memory deformation bodies and heating triggering bodies, and the product forming effect is effectively prevented from being influenced.

A double-cylinder quick injection structure of an injection molding machine comprises an oil cylinder barrel, a front cover, a rear cover, a differential rod and a piston rod; the front cover and the rear cover are located at the two ends of the oil cylinder barrel, the differential rod is through front and back, the tail of the differential rod is arranged in the rear cover, and the head of the differential rod extends towards the front cover; and a cavity is formed in the rear portion of the piston rod, the piston rod is arranged outside the differential rod in a sleeving mode, and the head of the piston rod penetrates through the front cover and is connected with the front cover in a sliding mode. Through holes are oppositely formed in the two sides of the tail of the differential rod, an annular cavity surrounding the through holes is formed in the rear cover, and a first oil port and a second oil port which supply oil to the differential cavity through the annular cavity and the through holes are formed in the rear cover, so that the flow can be reduced, and control is more accurate; and rapid injection molding of the large-diameter piston rod can be achieved, and injection molding processing has the advantages.

The invention discloses a hanging ring integrated bottle preform large in cooling area of a pouring gate column. The hanging ring integrated bottle preform comprises a bottle preform body, a hanging ring and the pouring gate column. The pouring gate column is arranged at the closed end of the bottle preform body, the hanging ring is connected with the pouring gate column through a connecting part, and the connecting part is arranged in a space formed between the pouring gate column and the hanging ring in a non-linear manner. The pouring gate column is of a special-shaped column structure with a cooling area larger than that of a cylindrical pouring gate column. By means of the bottle preform, the heat dissipation area of the pouring gate column is increased, the heat dissipation area of the pouring gate column is increased, then the heat dissipation rate is increased, the whole production period is shortened, the production efficiency is improved by 20%, and bubbles and wiredrawing are avoided.