A metering valve has a closing member and a valve seat. The closing member is movable between a closed position on the valve seat sealing a material outlet, and an open position raised above the valve seat leaving the outlet clear. An actuating element rigidly connected to the closing member is arranged between first and second piezo-actuators at a distance from the first piezo-actuator in the closed position less than the maximum length change of the first piezo-actuator, or lies loosely thereon and at a distance from the second piezo-actuator longer than the maximum length change of the first piezo-actuator. The actuating element in the open position is arranged at a distance from the second piezo-actuator less than the maximum length change of the second piezo-actuator, or lies loosely thereon and at a distance from the first piezo-actuator greater than the maximum length change of the second piezo-actuator.

Technical Problem Provide is a discharge device capable of easily controlling an operation of a plunger at the time of supplying a viscous material to a cylinder and a liquid supply method capable of forming a desired overlap portion.

Solution to Problem The discharge device 10 includes the supply valve 40 which controls the supply of the viscous material M to the cylinder 30, the plunger 50 which applies a pressure to the viscous material supplied to the cylinder, the ball screw 60 which is movable in the same direction as the back-and-forth direction of the plunger, and the motor 120 which is connected to the ball screw through the power transmission mechanism 110, wherein the plunger and the ball screw are not connected.

A dispense valve assembly for selectively providing fluid to a nozzle from a cartridge of a dispensing apparatus is disclosed. The dispense valve assembly includes a dispense valve including a valve rod and a dispense valve actuator for actuating the valve rod, as well as a component assembly that includes a valve housing and a nozzle adapter. The valve housing defines a proximal end for releasably attaching to the dispense valve, a distal end opposite the proximal end, and an angled extension defining an inlet. The dispense valve assembly also includes a nozzle adapter defining a proximal end for attaching to the distal end of the valve housing and a distal end opposite the proximal end. The dispense valve assembly also includes a nozzle releasably attached to the distal end of the nozzle adapter. The valve housing can be disposed after a single use.

An applicator system for applying a material to a substrate is disclosed, the applicator system having a nozzle assembly (28) that includes a nozzle having a nozzle head (108). The nozzle assembly (28) also includes a baffle plate (101) including a cutout (144) that extends through the baffle plate (101), where the baffle plate (101) is received by the nozzle head (108) such that the nozzle head (108) and the baffle plate (101) define a cavity. The nozzle assembly (28) further includes a cover plate (102) attached to the nozzle head (108) such that the cover plate (102) secures the baffle plate (101) within the nozzle head (128), where an outlet passage is defined between the baffle plate (101) and the cover plate (102), the outlet passage being fluidly connected to the cavity through the cutout (144) of the baffle plate (101).

A check valve system includes a housing, a blocking element, and a biasing member. The housing has a passageway therethrough, the passageway including a first portion and a second portion, the first portion having a diameter that is less than a diameter of the second portion so as to form a stepped portion. The blocking element is disposed within the second portion of the passageway. The biasing member is disposed within the second portion of the passageway and configured to maintain the blocking element in contact with the stepped portion when under compression. The housing, the blocking element and the biasing member being obtainable by substantially simultaneously 3D printing, so as to be formed from one or more 3D printable materials.

A material supply assembly includes a valve assembly having an outer valve member and an inner valve member rotatable relative to the outer valve member. A base assembly includes an base structure and an actuator. An engagement structure is operative between the outer valve member and the actuator to prevent relative movement between the outer valve member and the actuator. A locking structure is operative between the inner valve member and the base structure to prevent relative movement between the inner valve member and the base structure. Movement of the actuator relative to the base structure moves the outer valve member relative to the inner valve member to operate the valve assembly.

A check valve system includes a housing, a blocking element, and a biasing member. The housing has a passageway therethrough, the passageway including a first portion and a second portion, the first portion having a diameter that is less than a diameter of the second portion so as to form a stepped portion. The blocking element is disposed within the second portion of the passageway. The biasing member is disposed within the second portion of the passageway and configured to maintain the blocking element in contact with the stepped portion when under compression. The housing, the blocking element and the biasing member being obtainable by substantially simultaneously 3D printing, so as to be formed from one or more 3D printable materials.

A check valve system includes a housing, a blocking element, and a biasing member. The housing has a passageway therethrough, the passageway including a first portion and a second portion, the first portion having a diameter that is less than a diameter of the second portion so as to form a stepped portion. The blocking element is disposed within the second portion of the passageway. The biasing member is disposed within the second portion of the passageway and configured to maintain the blocking element in contact with the stepped portion when under compression. The housing, the blocking element and the biasing member being obtainable by substantially simultaneously 3D printing, so as to be formed from one or more 3D printable materials.

A dispensing module includes a needle and an actuator housing defining an actuator cavity with an actuator disposed therein, a body cavity, and a needle passageway connecting the actuator cavity and the body cavity. A lower end of the needle defines a valve element, and an upper end of the needle is secured to the actuator. The dispensing module also includes a nozzle adapter releasably coupled to the actuator housing, where the nozzle adapter defines a seal seat, a fluid inlet, a fluid channel, and a fluid outlet in fluid communication with the fluid inlet and the fluid channel. The nozzle adapter is configured to be releasably coupled to the actuator housing using one or more fasteners, such that the needle extends into the fluid channel.

The disclosure relates to a print head for applying a coating agent to a component, in particular for applying a paint to a motor vehicle body component, having a nozzle plate, a nozzle in the nozzle plate for dispensing the coating agent, and a valve element movable relative to the nozzle plate for controlling the release of coating agent through the nozzle, the movable valve element closing the nozzle in a closed position, whereas the movable valve element releases the nozzle in an opened position, and having a seal for sealing the nozzle with respect to the movable valve element in the closed position of the valve element. The disclosure provides that the seal is not designed as an elastomer insert on the valve element.