18 results about "Injection force" patented technology

The utility model belongs to a spraying device, and provides a supersonic spraying device, a non-invasive spraying device and a spraying instrument.The problems that spraying is not uniform and operation is inconvenient still exist in an existing instrument, and the supersonic spraying device, the non-invasive spraying device and the spraying instrument.The supersonic spraying device comprises a liquid section, a gas inlet section, a contraction section, a throat part and an expansion section, and the gas inlet section, the contraction section, the throat part and the expansion section are coaxially and sequentially connected; liquid enters from the liquid section, gas is accelerated through the contraction section, reaches the throat part and is continuously accelerated at the expansion section, the liquid entering from the liquid section is atomized under the action of the gas at the throat part, is brought into the expansion section and is finally sprayed out from the spraying opening along with continuous acceleration, and the uniform spraying effect is achieved. According to the supersonic jet device, the ratio of the axial length L1 to the axial length L2 is designed, the structure of the supersonic jet device is further optimized, and actual verification shows that under the optimized ratio, the jet force of the supersonic jet device is obviously improved, the particle size and the jet range of jetted liquid drops are better, and the flow speed of the liquid drops is more stable.

The present invention discloses a dual accumulator oil passage system for a die casting machine, which belongs to the technical field of die casting machine control. The dual accumulator oil passage system includes an injection cylinder and an accumulator, and further includes a booster accumulator. The booster accumulator includes a booster chamber and an annular chamber. The booster chamber is connected to a rodless cavity of the injection cylinder. The accumulator is connected to the annular chamber of the booster accumulator via a first servo valve. The annular chamber is connected to an oil tank via a second servo valve. The rod-equipped cavity of the injection cylinder is connected to the oil tank via a third servo valve. In this technical solution, the first and second servo valves form an A-bridge control for the boost accumulator, and by controlling the pressure in the annular chamber of the boost accumulator, the magnitude of the boost injection force of the injection cylinder can be controlled. The third servo valve can control the oil discharge from the rod-equipped cavity of the injection cylinder, thereby controlling the injection speed of the injection cylinder. This technical solution can achieve accurate control of the injection speed and injection force by using only three servo valves.

The utility model relates to the field of injection molding machines, and discloses a novel machine barrel fixing structure which comprises a machine barrel seat, a machine barrel which is horizontally inserted into the machine barrel seat and of which the outer ring wall is concavely provided with a ring groove, and a pair of connecting semi-rings which are partially inserted into the ring groove, are partially exposed out of the ring groove and are locked with the machine barrel seat through first screws, the connecting semi-ring is arranged on one side, far away from the injection direction of the machine barrel, of the machine barrel seat, and the locking direction of the first screw is the same as the injection direction of the machine barrel, so that when the first screw on the connecting semi-ring is subjected to injection force, the connecting semi-ring is arranged on one side, far away from the injection direction, of the machine barrel seat, and the locking direction of the first screw is the same as the arrangement direction of the machine barrel; therefore, when the connecting semi-ring is subjected to injection force, the machine barrel base can support the connecting semi-ring, so that the injection force borne by the first screws on the connecting semi-ring is reduced, the service life of the first screws is prolonged, and meanwhile, the number of the first screws can be reduced.

This invention discloses a material tube assembly for an injection molding machine injection system, including a locking platen, a melt cylinder, a nozzle, and a nozzle flange. The locking platen has a locking cavity, and the nozzle is fixed to the nozzle flange for injection. The front end of the melt cylinder has a flange connection portion integrally forged therewith. The outer diameter of the flange connection portion is smaller than the inner diameter of the locking cavity. The flange connection portion is connected and fastened to the nozzle flange, whose outer diameter is smaller than the inner diameter of the locking cavity, by several fasteners. The fastening force between the flange connection portion and the nozzle flange is sufficient to overcome the injection force generated when the nozzle injects material. This invention, by connecting the flange connection portion integrally formed with the melt cylinder to the nozzle flange, and ensuring that the fastening force between the flange connection portion and the nozzle flange overcomes the injection force generated when the nozzle injects material, allows the front end assembly of the melt cylinder to extend into the locking cavity without lengthening the nozzle, shortening the injection flow path and thus reducing the injection pressure loss during injection.

The utility model relates to a pushing and injecting button assembly and a pressing driving mechanism, the pushing and injecting button assembly comprises a button part and a transmission part, the button part and the transmission part rotate relatively in the pushing and injecting process, the pushing and injecting button assembly further comprises a low-friction part, and the low-friction part is used for transmitting pushing force borne by the button part to the transmission part; the dynamic friction coefficient of the button part and the transmission part is defined as a reference friction coefficient; the low-friction part rotates relative to the button part in the injection process, the dynamic friction coefficient of the low-friction part and the button part is defined as a first friction coefficient, and the first friction coefficient is configured to be smaller than a reference friction coefficient; and / or, the low-friction part rotates relative to the transmission part in the injection process, the dynamic friction coefficient of the low-friction part and the transmission part is defined as a second friction coefficient, and the second friction coefficient is configured to be smaller than the reference friction coefficient. The friction resistance of a user in the injection process is reduced, and the purpose of reducing the injection force of the user is achieved.

To provide a cast-molding apparatus effective for further improving the quality of a die-cast product.SOLUTION: A cast-molding apparatus 1 includes a mold 10, a cavity 13 formed by the mold 10, injection means 20 that is driven by a hydraulic fluid and injects a molten metal into the cavity 13, control means 100 that controls an injection speed of the injection means 20, a die line L1 indicating a correlation between the injection speed and an injection force necessary for supplying the molten metal into the cavity 13, and a machine line L2 indicating a correlation between the injection speed and an injection force that can be generated by the injection means 20. The control means 100 is configured to generate a margin die line L1 obtained by shifting the die line L11 by a predetermined correction amount in a direction of increasing the injection output, specify an injection speed corresponding to an intersection between the margin die line L11 and the machine line L2 as a target injection speed, and accelerate the injection speed to the target injection speed and maintain the injection speed in the vicinity of the target injection speed.SELECTED DRAWING: Figure 3

The present invention relates to a mold (1) for manufacturing a one-piece bicycle, tricycle, quadricycle, or motorcycle frame (32) by injecting a polymer material, the mold (1) comprising a fixed part (2) and a movable part (3) capable of moving towards or away from the fixed part to close or open the mold respectively, which together delimit a molding cavity (8) of the frame when the mold is closed, the mold (1) being characterized in that: - it comprises at least three sliders (15, 16, 17, 18), capable of being inserted into respective cavities (11, 12, 13, 14) of the molding cavity (8) whose positioning within said molding cavity and profile correspond to parts of the frame to be manufactured, said sliders (15, 16, 17, 18) being intended to be overmolded with polymer material during a molding operation so as to form said parts of the frame (32), - at least two of these sliders (15, 16, 17,18) are engaged with each other when in position in their respective imprint, thus forming a solid structure capable of resisting injection forces. Figure for abstract: Fig. 1,

This utility model relates to the field of medical device manufacturing technology, and in particular to an injection force activation mechanism and an emergency injection pen including the same. The injection force activation mechanism includes a columnar spring, an activation rod, a spring housing, and an inner body arranged sequentially from the inside out. The activation rod is formed with a receiving cavity and a radially extending limiting structure. The inner body is formed with a radially rebound blocking structure. The columnar spring is housed by the spring housing and axially compressed, and is vertically inserted into the receiving cavity. In the initial state, under the synergistic action of the radially extending limiting structure and the radially rebound blocking structure, the axial displacement freedom of the activation rod is restricted, and the columnar spring remains in a compressed state; when the emergency injection pen is activated, and after the radially rebound blocking structure and the radially extending limiting structure lose their blocking constraint relationship, the elastic potential energy stored in the columnar spring is released, and the activation rod can push the PFS component.

The utility model relates to the technical field of die-casting automatic demolding and spraying, in particular to a gas-liquid proportion adjustable spray head which comprises a mounting seat, an extrusion mechanism, an adjusting part, a connecting pipe, a sliding assembly, a connecting arm, a locking rod and a nozzle, the nozzle is provided with a locking hole, the extrusion mechanism is slidably connected with the mounting seat, one end of the adjusting part is slidably connected with the mounting seat, and the other end of the adjusting part is slidably connected with the sliding assembly. The other end of the adjusting component is fixedly connected with the extrusion mechanism, the lock hole is formed in the nozzle, the connecting pipe is fixedly connected with the mounting base, the sliding assembly, the connecting arm and the lock rod are arranged on the connecting pipe, the connecting arm is in sliding connection with the sliding assembly, the lock rod is fixedly connected with the sliding assembly, and the nozzle is arranged on the connecting pipe. The problems that when an existing spray head is used for spraying demolding, the spraying force and the spraying flow cannot be adjusted, and practicability is affected are solved.

An injection unit for a molding machine (2), comprising: a cartridge (3); an injection actuator (4), which is designed to push the plasticized molding compound out of the cartridge (3) via the injection nozzle (5); at least one sensor which is designed to detect a time-resolved signal characterizing the driving force of the injection actuator (4); and an open-loop or closed-loop control device (6) for open-loop or closed-loop control of the injection actuator (4), which is designed to receive a time-resolved characteristic signal of the at least one sensor, wherein the open-loop or closed-loop control device (6) is designed to carry out the following steps: actuating the injection actuator (4) in order to carry out a movement towards the injection nozzle (5); detecting a time-resolved signal characterizing the driving force of the injection actuator (4); determining a substantially constant force level over a period of time, preferably before a significant increase in the injection force level occurs; and calculating the pressure loss ([delta] p), preferably on the basis of the first force level.

The application relates to a continuous inlay mold inner injection mold and process. Belonging to the technical field of loudspeaker accessory injection molds, the mold comprises an upper mold group, a lower mold group, a jacking mechanism and a pull winding mechanism. The injection area and the belt positioning area of the lower mold group are provided with mounting grooves, and a jacking column is arranged in the grooves. The jacking mechanism drives the vertical lifting of a material passing block through the cooperation of a driving body and a slope mechanism, so that the jacking column of the lower mold group is accurately jacked into or away from the first and second positioning holes on the material belt. The process flow comprises the steps of material belt passing, jacking column positioning injection, separation and automatic stepping. Through the precise mechanical interlocking of the jacking column and the positioning hole, the problem of high defective rate caused by the easy deviation and overturning of the extremely small size inlay under the injection force is effectively solved, and the positioning precision and the production automation degree are remarkably improved.

The invention relates to a firing device for a needleless injector and a needleless injection system. The needleless injector includes an injection chamber housing and a piston assembly. The launching equipment comprises a power push rod, a power assembly and a launching assembly. The power push rod is configured to be connectable to the piston assembly. The power assembly comprises a power storage unit and a power output part, the power storage unit is constructed to be capable of storing or generating power used for driving the power output part to move, and the power output part is connected to the power push rod to drive the power push rod to move. The launching assembly comprises a launching rod and a control device, the launching rod is connected to the power push rod and can move synchronously with the power push rod, and the control device is configured to control the launching time of the launching rod in the state that the power output piece is driven by power. According to the scheme, the controllable power assembly is combined with the launching assembly, so that the injection force and the injection time are more controllable.

The utility model relates to the technical field of pistons for injectors, and aims to solve the problems that pistons are low in sealing performance, force application is inconvenient, and injection force and injection amount cannot be accurately controlled. The utility model provides a piston for a pre-filled syringe. The piston comprises a piston body, the plug body comprises a first end part and a second end part; the first end part is provided with a conical sealing head; a sealing boss is annularly arranged on the outer side wall of the second end part; a plurality of convex rings are arranged between the conical sealing head and the sealing boss at intervals; the convex rings are arranged on the outer wall of the plug body; according to the piston for the pre-filled syringe, the sealing performance and the accuracy in the injection process are guaranteed, and the accumulation and waste of injection liquid and the resistance in the later stage of propelling injection are reduced.

A fluid injector for injecting discrete volumes of propellant. The fluid injector includes a body and at least one nozzle defined between first and second surfaces of the body. The fluid injector further comprises: a barrier fluid supply for supplying a barrier fluid to each of one or more of the at least one nozzle; a propellant supply for supplying a propellant to each of the one or more nozzles; and an injector for applying an injection force to the injection agent contained in each of the one or more nozzles. In use, the fluid injector performs a barrier fluid supply step in which a barrier fluid supply supplies barrier fluid to each of the one or more nozzles, and then performs a propellant supply step in which a propellant supply supplies propellant to each of the one or more nozzles; and then performing an injection step in which an injector applies an injection force to the propellant contained within each of the one or more nozzles to cause at least some of the propellant to be injected from each of the one or more nozzles. A barrier fluid at least partially coats an interior surface of each of the one or more nozzles to reduce contact of propellant with the interior surface of each of the one or more nozzles.

Disclosed is a dose button assembly (1, 3) for an injection device (8) that enables reliable transmission of the injection force to a dosing member (2, 4) of the device and comprises an overload protection mechanism. It comprises a button clutch element (3) and a button housing (1), is releasably engageable with a first part (2) of a dosing member of the injection device (8) and is rotatably mounted on a second part (4) of the dosing member of the injection device (8).

The invention discloses a single-cylinder injection structure of an injection molding machine. The single-cylinder injection structure comprises a screw rod, a front cylinder cover, a mandrel, a rotary supporting piece, an outer cylinder barrel, a piston barrel, an inner cylinder barrel, a transmission shaft, a rear cylinder cover and a motor, the front end of the mandrel is connected with the screw, a connecting cavity is formed in the rear end of the mandrel, the front end of the transmission shaft is inserted into the connecting cavity, the mandrel is sleeved with the inner cylinder barrel, the inner cylinder barrel is sleeved with the piston barrel, the rotary supporting piece is arranged between the piston barrel and the mandrel, and the piston barrel is located in the outer cylinder barrel and can axially move relative to the outer cylinder barrel. An ejection retreating cavity is formed between the outer cylinder barrel and the piston barrel, the front cylinder cover is fixed to the front end of the outer cylinder barrel, the rear cylinder cover is fixed to the rear end of the outer cylinder barrel and connected with the inner cylinder barrel, an injection cavity is formed between the rear cylinder cover and the piston barrel and communicated with an inner cavity of the inner cylinder barrel and the connecting cavity through a flow channel, and the transmission shaft is in transmission connection with the motor. According to the single-cylinder injection structure, the requirement for the sealing ring is lowered, and the size of the oil cylinder can be smaller on the premise that the injection force is met.

The invention relates to a firing device for a needleless injector and a needleless injection system. The needleless injector includes an injection chamber housing and a piston assembly. The launching equipment comprises a power push rod, a power assembly and a launching assembly. The power push rod is configured to be connectable to the piston assembly. The power assembly comprises a power storage unit and a power output part, the power storage unit is constructed to be capable of storing or generating power used for driving the power output part to move, and the power output part is connected to the power push rod to drive the power push rod to move. The launching assembly comprises a launching rod and a control device, the launching rod is connected to the power push rod and can move synchronously with the power push rod, and the control device is configured to control the launching time of the launching rod in the state that the power output piece is driven by power. According to the scheme, the controllable power assembly is combined with the launching assembly, so that the injection force and the injection time are more controllable.

The invention provides a high-pressure direct-injection forced-evaporation spark-ignition type diesel rotor engine and a control method thereof. The air inlet pipeline provides controllable clean inlet air for the rotor engine through the throttle valve and the air inlet sensor assembly. An oil supply pipeline forms a high-pressure precise oil supply system through a low-pressure oil pump, a high-pressure oil pump, an oil pressure adjusting valve and a high-pressure direct injection oil injector, and high-pressure injection of the highest 80 MPa is achieved. The exhaust pipeline realizes exhaust waste heat recovery and parameter monitoring through an exhaust heat exchanger, a control valve and an exhaust sensor, the exhaust heat exchanger and a diesel oil tank form a heat exchange loop, and exhaust waste heat at 400 DEG C is used for heating diesel oil to 50 DEG C so as to improve the atomization effect and the combustion process; the high-energy glow plug in the rotor engine cylinder is forcibly evaporated to prevent carbon deposition when a diesel oil beam is close to a spark plug; the electronic control unit ECU is connected with all sensors and actuators, oil injection parameters, the heating temperature of the high-energy glow plug and the opening degree of a throttle valve are dynamically adjusted according to working condition parameters such as the rotating speed and the air inlet pressure, and efficient and stable operation is achieved.