9 results about "Injection force" patented technology

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 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.

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.

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.

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 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.