摘要:
A method of depositing an extrudable substance onto a surface. The method comprises the step of delivering the extrudable substance from a cartridge to a flow-bypass assembly. The method further comprises the step of selectively controlling the flow-bypass assembly to purge air from the extrudable substance before the extrudable substance enters a delivery tube. The method further comprises the step of selectively controlling the flow-bypass assembly to deliver the extrudable substance from the flow-bypass assembly to a valve assembly via the delivery tube. The method further comprises the step of controlling flow of the extrudable substance from the valve assembly to a nozzle.
摘要:
An apparatus (100) for depositing an extrudable substance (102) onto a surface (126). The apparatus (100) comprises a bracket (104), comprising an opening (142) that has a central axis (110), and a tubular sleeve (108), coupled to the bracket (104) via the opening (142) and rotatable relative to the bracket (104) about the central axis (110). The apparatus (100) further comprises a valve assembly (112), comprising a valve body (140), fixed to the tubular sleeve (108) and rotatable relative to the bracket (104) together with the tubular sleeve (108), and a valve (144), internal to the valve body (140). The apparatus (100) also comprises a linear actuator (120), configured to position the valve (144) relative to the valve body (140). The apparatus (100) further comprises a nozzle (118), fixed to the valve body (140) and rotatable relative to the bracket (104) together with the valve body (140).
摘要:
A flow detector for monitoring an adhesive flow in an adhesive applicator includes a sensor device arranged in the adhesive flow. The sensor device is formed as a capacitive sensor.
摘要:
A device for dispensing adhesive on a substrate comprises a writing head with a first dispensing nozzle and at least one second dispensing nozzle. The device can be operated in two operating modes and is configured to perform the following steps for the change from the one operating mode to the other operating mode: —lifting of the writing head, retracting or extending a pin, and lowering of the writing head to a predetermined working altitude, wherein the tips of the dispensing nozzles reach a substantially similar altitude above the substrate in the retracted state of the pin, and wherein the tip of the at least one second dispensing nozzle reaches a higher altitude above the substrate than the tip of the first dispensing nozzle in the extended state of the pin.
摘要:
A coating apparatus for forming a thin UV curable resin coating on threaded end portions of a steel pipe comprises a spraying unit having at least two nozzles adapted to spray the resin coating composition by pneumatic atomization toward the threaded end portion of the steel pipe, a resin supply system for supplying the resin coating composition to each nozzle, and a first nozzle support means which supports each nozzle for movement in the axial direction of the steel pipe and in the vertical direction. The two nozzles are disposed at different positions at least in the axial direction of the steel pipe at angles which are sloped such that the sprayed streams from the nozzles approach each other. The resin supply system has a regulator for maintaining the spraying air pressure of the resin coating composition in each nozzle of the spraying unit at a predetermined respective value.
摘要:
A process and apparatus for coating a surface of an elongated strip article, e.g. aluminum sheet, with a layer of solid polymer material. The process involves heating the polymer to produce a melt having a viscosity of at least 1000 centipoise when measured according to ASTM D4449 at 1 radian per second, extruding the melt onto a moving surface of the strip article through an elongated slot in a coating head having an extended surface adjacent to the slot arranged at an angle to the moving surface to form a coating gap converging in the direction of movement, thereby forming a coating on the strip article, and pushing the coating head towards the surface of the strip article as the melt is extruded as the coating onto the surface from the slot to reduce the coating thickness to a desired range by pressing the extended surface of the coating head onto the coating as the coating is formed. The apparatus includes coating heat, provided with a heater to maintain the viscosity of the melt, and load application device for the coating head, as well as equipment for melting the polymer and supplying the melt under pressure and at the desired temperature to the coating head. The process and apparatus allows strip articles to be coated with thin (1-100 microns) coatings of polymer materials without employing liquids as solvents or the like that cause atmospheric pollution problems.
摘要:
A combination nozzle and a device for applying a viscous material, particularly an adhesive, to a component edge includes two wide-slot nozzles lying close to one another. The first nozzle applies the viscous material and the second nozzle supplies a gas such as air for shaping the applied material bead. A nozzle mount has a guide roller placed on and movable about the edge of the component during application. A connector element via a connecting mechanism allows movement of the nozzle mount parallel to the surface normal on the component edge to press the guide roller against the edge during the application process by a spring mechanism. With the proposed combination nozzle and the proposed device, an optimal wetting of the component edge with the viscous material can be achieved, and additionally the component tolerances are compensated without the necessity of an elaborate sensor system.
摘要:
In a coating apparatus, which coats an object to be coated with a viscous coating material while causing a moving part to move a flat nozzle that discharges the coating material, the nozzle includes a cylinder that applies predetermined pressing force F to the nozzle towards the object to be coated. The cylinder forms a gap (G) between the object to be coated and the nozzle by moving the nozzle in a direction away from the object to be coated to a position where discharge reaction force (R) is balanced with pressing force (F). The discharge reaction force (R) is generated when the nozzle discharges the coating material to the object to be coated.
摘要:
A painting robot system includes a robot and a spray gun unit. The robot includes a plurality of robot arms and a drive shaft member disposed on a distal end robot arm of the multiple robot arms, the drive shaft member being rotatable about a distal end drive axis. The spray gun unit is mounted on the robot arm. The spray gun unit includes a support member fixed to the distal end robot arm, guide members disposed on the support member, a plurality of spray guns disposed on the support member, and a linkage mechanism connecting between the movable spray guns and the drive shaft member. A spacing between at least one pair of adjacent spray guns can be varied via the linkage mechanism by rotating the drive shaft member of the robot.
摘要:
A process and apparatus, including a separate coating head, for coating a strip article with a coating material. The process involves coating a strip article with a film of coating material by passing the strip article through a coating apparatus having at least one floating coating head provided with a coating face facing and extending laterally across a surface of the strip article to be coated. The coating head exudes a coating material and floats on the coating material as it meters the coating to a film of the desired thickness. The coating face of the coating head has a preferred coating profile between its opposite ends, and wherein distortions of the preferred coating profile during coating of said strip article are substantially prevented by modifying heat flux to or from selected parts of the coating head to compensate for distortions caused by differences of temperature within the coating head. The apparatus provides means of modifying heat flux to prevent such distortions of the coating profile. A removable coating head also includes such means of modifying the heat flux.