325results about How to "Reduce injection pressure" patented technology

<heading lvl="0">Abstract of Disclosure</heading> The present invention relates to devices and methods for treating fractured and/or diseased bone. More specifically, the present invention relates to devices and methods for repairing, reinforcing and/or treating fractured and/or diseased bone using various devices, including cavity-forming devices.

A mold assembly for molding a thermoplastic resin, which comprises; (a) a first mold member and a second mold member for manufacturing a molded article of a thermoplastic resin, (b) an insert block provided in the first mold member, said insert block constituting part of a cavity, having a thickness of 0.1 mm to 10 mm and being formed of a material having a thermal conductivity of 2x10-2 cal/cmxsecx DEG C. or less, and (c) a molten thermoplastic resin introduction portion provided in the second mold member, wherein an insert block covering portion is formed in the second mold member, and when the first mold member and the second mold member are clamped to each other, (A) a clearance between the insert block and the insert block covering portion is equal to, or less than, 0.03 mm, and (B) an amount of overlapping of the insert block and the insert block covering portion is equal to, or greater than, 0.5 mm.

The present invention is a process for producing an injection-molded thermoplastic workpiece having a thermoset coating bonded thereto, comprising the steps of introducing in three stages into a closed mold a thermoplastic material, such as a polyolefin, heated to a temperature above its melting point and molding said material to form a workpiece; cooling the workpiece to a temperature less than its melt temperature introducing a thermoset coating composition into the closed mold to cover at least a portion of a surface of the workpiece. The mold is then opened and the workpiece is removed after the coating composition has at least partially cured. The invention is also directed to a molded article made by the described process.

The invention is directed to a variable compression ratio internal combustion engine in which the compression ratio of the engine can be varied and multiple types of fuels having different combustion velocities are used. The invention provides a technology for achieving excellent engine performance for respective types of fuels. In the variable compression ratio internal combustion engine in which the compression ratio can be varied and multiple types of fuels having different combustion velocities are injected through multiple fuel injection valves, maps from which a target compression ratio of the internal combustion engine is read out are switched in accordance with the fuel used, thereby suppressing knocking or other disadvantages.

The present invention discloses pulse type shock reinforced in-line mixing and injecting forming method and apparatus. Pulse type shock is introduced into the whole in-line mixing and injecting forming process of producing fiber reinforced composite polymer material. The apparatus includes one plasticizing extruder with three screws arranged in one line and including one main screw capable of generating periodical axial pulse shock, one buffering storing device, and one pulse type shock pressure reinforcing plunger injecting device. The present invention can lower melt viscosity, raise mixing and homogenizing effect, raise the compatibility between fiber and polymer, lower the processing power consumption and raise product quality.

A method and a system for cleaning the glass surface of an object, such as a surface light, a run way guide light, or a reflector, installed on various pavements or roads, by propelling a cleaning agent from a blast nozzle to the glass surface. The blast nozzle is installed on the front end of an arm of a working robot mounted on a truck. A truck mounted with a cleaning agent blaster and a working robot (21) provided with a blast nozzle (23) and a CCD camera (24) at the forward end of a manipulator is stopped at a specified position in the vicinity of an object to be cleaned, i.e. surface light or a reflection mirror (30). Based on an image of the object taken by the CCD camera (24), dimensions are recognized from distance information through processing by a vehicle-mounted computer, the image shape of the object is collated with a stored shape and recognized, and then positional information of the recognized object is searched. Cleaning agent is propelled from the blast nozzle (23) at the forward end of the manipulator (22) toward the object while measuring the extent of cleaning, brightness or light intensity of the cleaned object is determined by the CCD camera, and automatic cleaning is performed.

The invention relates to an oil layer three-section block removing technology with excellent block removing effect. A block removing agent will be injected at three sections; then, clear water will be injected after the reaction of 4 to 24 hours at each section; the quantity of clear water will be 1 to 2 times of the sum between the volume of an oil pipe and the volume of the circular space from the bottom of the oil pipe to the top of a perforation interval. Because the composition and function of the block removing agents different from each other, the invention can be applied in a broad scope to adopt to the needs in various stratum, realize excellent block removing effect with the removing rate of over 75 percent, thus satisfying the industrial needs.

The invention relates to a mold heating and cooling rod which comprises a heating and cooling rod body and a heating element, a cooling thermal insulation hole for introducing a cooling medium when a mold needs to be cooled and discharging the cooling medium when the mold needs to be heated and a heating element accommodating hole are arranged in the heating and cooling rod body along the axial direction, and the heating element is mounted in the heating element accommodating hole; the mold capable of realizing rapid cooling and rapid heating comprises a mold core and the heating and cooling rod, and the heating and cooling rod is in contact with the mold core; and one side of the heating and cooling rod which is provided with the heating element is near to a molding surface of the mold core. The advantages are that, as the molding surface can be rapidly and evenly heated and cooled and rapidly heated to the temperature which is near to or equal to that of melting materials, a molded product has the advantages of good quality, difficult production of weld marks, flow marks, surface bubbles and the like, even color and luster, even density of the product, small shrinkage and ability of reducing the injection pressure and the product deformation caused by residual stress after consolidating and molding the molten materials.

Multilayer products, such as vehicle trim panels, provided with an external skin layer and an internal core layer are co-injection molded by injecting external material (P) through a first plurality of points of injection (3a-3c) and injecting the core material (C) through a second plurality of points of injection (4a-4g), the points and nozzles of injection of one material being physically distinct from those of the other material.

The invention involves a counter-pressure chemical foaming high speed injection moulding shaping method. The invention provides a method which utilizes injection moulding shaping machine equipment, and dies, general gas energy, plastic raw materials and other system resources comprehensively, produces thick-wall plastic-foam product high speed and high effectively. The invention first closes the die and injects gas into die cavity, then injects molten material into die cavity, the welding fluid is full of die cavity after inner foaming, the molten material surface is closed to the metal wall-surface of die cavity, the molten material in die cavity is solidified and shaped after cooled, then opens the moving mold and static mold, the plastic products are prepared which surface is smooth and dense and inner is distributed with uniform foam. The invention can eliminate or reduce the converging cave and warping deformation of product surface, reduces injection moulding pressure, thereby reduces the lock-mode pressure of injection machine; reduces equipment operating costs, thereby improves the size accuracy and strength of products, can reduces 15% ~ 35% raw material consumption effectively, products have higher mechanical property and weight proportion.

Injection molding machine utilizes microwave heating. A microwave oven adapted to receive a microwave absorbent plasticizing vessel is utilized with or incorporated into an injection molding system to form a plasticizing unit for heating polymer granules to an injection temperature and injection of the melt into the cavity of the injection mold. The polymer granules may be preheated by conventional heating systems to a temperature at which the granules become microwave absorbent before heating to the injection temperature in the microwave oven. The injection molding machine also contains a hydraulic actuator for injection of the melt. The ceramic materials forming the plasticizing vessel are selected to provide equal heating rates of mold members and relatively uniform heating of polymer to desired injection temperature.

The invention refers to an impeller, consisting of plastic, which Is intended for a coolant pump of an internal combustion engine. The impeller, which has a multipart construction, comprises a back wall, which is connected in one piece to guide vanes and also to a hub, and also a separate molded disk which on the end face partially covers the guide vanes in the installed state. The components, the back wall and the molded disk are positionally fixed by means of a materially bonding connection.

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.

In order to improve the resection efficiency, operability, and safety of endoscopic mucosal resection operations, a method has conventionally been employed wherein a cushioning agent such as physiological saline is injected into the layer below the area designated for resection, causing the lesion to lift and protrude (hereafter simply referred to as "protrusion"), after which the lesion is removed. It is difficult to accurately remove the intended area using conventional cushioning agents because applying pressure to the protrusion tends to cause deformation thereof, the degree of protrusion is low, and the cushioning agent diffuses immediately after injection into the peripheral tissue, thereby causing the protrusion to disappear. The present invention solves these problems by employing a polysaccharide having a pseudoplastic viscosity such as xantham gum, carrageenan, gellan gum, guar gum, locust bean gum, sacran, or the like as a cushioning agent.

Disclosed herein are methods and compositions of blended polycarbonate compositions with improved mold release characteristics. The resulting compositions, comprising one or more polycarbonate polymers, an impact modifier, a polycarbonate-siloxane copolymer, and an alkyl sulfonate salt, can be used in the manufacture of articles requiring improved mold release characteristics while still retaining the advantageous physical properties of blended polycarbonate compositions. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

A method for triggering a fuel injector via an on/off valve and a control valve that actuates it. The fuel injector has a pressure booster whose piston parts separate a working chamber from a differential pressure chamber. Via a compression chamber of the pressure booster, a nozzle chamber of the fuel injector can be acted on with highly pressurized fuel. The working chamber of the pressure booster communicates continuously with a common rail. During the main phase in which fuel is injected into the combustion chamber of an internal combustion engine, the control valve that actuates the on/off valve is triggered once or multiple times so that the maximum pressure level occurring at the combustion chamber end of a one-part or multipart injection valve member falls below the maximum achievable pressure level.

The super-large-type plastic injection moulding process includes the following steps: storage injection, premoulding mechanism is controlled by frequency converter and continuously rotated, general nitrogen gas is passed through pressure pump and one-way valve and pressed into rear portion of screw homogenizing stage and fed into the injection cylinder and storage cylinder together with molten material fully mixed with high-pressure nitrogen gas, if the process is incorrect, the molten material can be discharged out from safe discharge valve of said system. Said technological equipment is characterized by that the storage oil cylinder is connected with storage injection and premoulding mechanism, storage cylinder, injection cylinder and distributer, its one-way valve is connected with storage injection premoulding mechanism.

The invention discloses a piezoelectric dynamic plasticizing forming device and an injection molding method thereof. The forming device is characterized in that: the forming device comprises, sequentially connected from front to back, a nozzle, a nozzle seat, a material tube, a compression screw, a piezoelectric ceramic driving system, a hydraulic cylinder, and a hydraulic motor; the material tube is provided with a heating jacket, and the hydraulic cylinder and the hydraulic motor are connected with a hydraulic pump; the nozzle seat is connected to the front end of the material tube, and the nozzle is connected to the nozzle seat; the compression screw is positioned in the space of the material tube, and the back end of the piston rod, which extrudes the material tube, is connected with the front end of a piezoelectric ceramic; the back end of the piezoelectric ceramic is connected with a piston rod, two ends of the piston rod extrude the hydraulic cylinder, and the back end of the piston rod is fixedly connected with the hydraulic motor. The injection molding method comprises the following steps: a reverse piezoelectric effect of the piezoelectric ceramic is utilized, and a computer controls the piezoelectric ceramic to generate a driving signal, so the piezoelectric ceramic vibrates in an axial direction and the frequency and the amplitude of the vibration are controllable; the compression screw reciprocatingly vibrates in a small amplitude, high frequency, and high acceleration mode; and products with higher intensity than common products are finally obtained by mixing and injection molding.

The invention relates to a method of preparing a functional ceramic part of complex structure by powder injection molding. The method is characterized by comprising the following steps: S1, feed preparation: uniformly mixing functional ceramic powder with an adhesive to form a feed; S2, injection moulding: putting the feed prepared in the S1 in a powder injection moulding machine, and injecting the feed into a mold cavity under conditions of an injection pressure of 80-200 MPa and an injection temperature of 160-200 DEG C to form an injection blank; S3, degreasing: catalytically degreasing theinjection blank prepared in the S2 to form a catalytically degreased blank; S4, thermal degreasing: thermally degreasing the catalytically degreased blank prepared in the S3 to obtain a thermally degreased blank; and S5, sintering: putting the thermally degreased blank prepared in the S4 in a sintering furnace, and sintering the thermally degreased blank in an air atmosphere to obtain a sinteredblank. By setting a volume ratio range of the functional ceramic powder and the adhesive, the functional ceramic powder can be totally coated by the adhesive, so that the flawless injection blank is more easily obtained.

The invention discloses a mould capable of realizing a rapid heat cycle, which comprises a mould core provided with a moulding surface and heating rods with set number. Heating rod accommodating holes are formed at positions close to the moulding surface in the mould core and accommodate the heating rods; cooling insulation holes corresponding to the heating rods are formed at positions close to the heating rods in the mould core provided with the moulding surface, and are positioned on one side of the heating rods far from the moulding surface; the overall outline of the cross section of each cooling insulation hole is a closed curve; and one or more cooling insulation holes enclose corresponding heating rods in three directions. The mould has the advantages that: the moulding surface can be rapidly and uniformly heated and cooled, and can be rapidly heated to the temperature approaching to or equal to the temperature of a fused material, so the moulded products have good quality, weld marks, flow marks, surface bubbles and the like are not generated easily, the products have uniform luster and density and low shrinkage, and injection pressure and product deformation caused by residual stress after the fused material is solidified and moulded are reduced.

A method of sensing water within a fuel-water separator assembly disposed within a fuel system of an internal combustion engine is provided. The method includes the steps of: A) monitoring a single selectively activatable sensor within the fuel-water separator assembly to detect the presence of water; B) determining if the sensor is activated for greater than or equal to a first predetermined percentage of time, but less than or equal to a second predetermined percentage of time and providing a first level of warning if true; and C) determining if the sensor is activated for greater than the second predetermined percentage of time and providing a second level of warning if true. An apparatus configured to perform the claimed method is also disclosed.