Print head arrangement and prototyping system

Abstract

Print head assembly, characterized in that it is provided in prototyping systems, wherein the prototyping system comprises a drive unit and a work platform; wherein the print head assembly is connected to the drive unit and serves to generate a relative movement to the work platform under the drive of the drive unit; wherein the print head assembly comprises a mounting section and an extension module, wherein the mounting section has at least a first guide element extending in a first direction, wherein the extension module has at least a second guide element also extending in the first direction, wherein the first guide element and the second guide element can engage with each other in the first direction;wherein the print head assembly further comprises a locking device, wherein the locking device serves, in the state of engagement of the first guide element and second guide element, to provide forces to the mounting section and the extension module for mutual approach or separation in order to limit the movement of the extension module in a second direction which is perpendicular to the first direction;

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