Device and method for 3D printing methods, with accelerated execution

A device for producing three-dimensional models by means of a layering technique, the device comprising:

• a first coater and a second coater;
• and
• a print head on a left side of the first coater and on a right side of the second coater;
• wherein the first coater, the second coater, and the print head move simultaneously,
• so that the second coater is a leading coater and the first coater is a trailing coater when moving from left to right, and the second coater is the trailing coater and the first coater is the leading coater when moving from right to left,
• wherein the trailing coater deposits particulate material and the leading coater is prevented from depositing particulate material.

A method for producing three-dimensional models by means of a layering technique comprising the steps of:

• dispensing a defined layer of a particulate build material to a build space by one or more coaters;
• selectively applying a binder fluid to the build material by a print head;
• moving the build space by a certain amount;
• and
• repeating these steps until a desired object is produced,
• wherein the steps of dispensing the particulate build material and applying the binder fluid take place essentially simultaneously,
• wherein the method includes applying a vibration to one of the one or more coaters and reducing or preventing the transmission of the vibration to the print head or to a different coater.

A method for producing three-dimensional models by means of a layering technique comprising the steps of:

• dispensing a defined layer of a particulate build material to a build space;
• selectively applying a binder fluid to the build material;
• moving the build space by a certain amount;
• and
• repeating these steps until a desired object is produced,
• wherein multiple coaters and multiple print heads are used for forming multiple layers in one pass;
• wherein the multiple layers are built on a continuously operating conveyor unit.