Powder laying device with convenient replacement function for 3D printer

Abstract

The invention discloses a powder laying device with a convenient replacement function for a 3D printer. The powder laying device with the convenient replacement function for the 3D printer comprises aprinting platform and a powder laying plate arranged in the center of the outer wall of the top of the printing platform, wherein side plates are arranged on the left side and the right side of the outer wall of the top of the printing platform, a keel frame is movably arranged in the outer sides of the two side plates in a sleeving mode, a powder laying assembly is arranged at the bottom of a lifting plate, an up-and-down reciprocating driving assembly matched with a lifting rod is arranged on the right side of the outer wall of the top of the keel frame, and front-and-back reciprocating driving assemblies are symmetrically arranged at the bottoms of the outer walls of the left side and the right side of the keel frame. When overhaul work after emergency shutdown is carried out, the keelframe is pulled out forwards or backwards to screw locking blocks out to enable two inserting plates to slide towards the inner side, so that a self-locking assembly loses the effect of fixing a mounting frame, the whole mounting frame is directly taken down, then fixing bolts are screwed out to take out a bottom reinforcing plate so as to pull a machine shell out to overhaul each part, and theparts are sequentially mounted back after faults are removed.

Description

technical field [0001] The invention relates to the technical field of 3D printers, in particular to a powder spreading device of a 3D printer that is easy to replace. Background technique [0002] 3D printer is a kind of cumulative manufacturing technology, that is, a machine of rapid prototyping technology. It is based on a digital model file. It uses special wax, powdered metal or plastic and other bondable materials to print layer by layer. Adhesive materials are used to create three-dimensional objects. The existing powder spreading mechanism spreads powder back and forth at a fixed height. When the powder falls, it is unevenly scattered on the printing platform due to its own gravity. The powder is average, and it is difficult to replace the fixed setting of the powder spreading mechanism. For this reason, we propose a powder spreading device for 3D printers that is easy to replace. SUMMARY OF THE INVENTION [0003] The purpose of the present invention is to provide...

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Problems solved by technology

[0002] 3D printer is a kind of cumulative manufacturing technology, that is, a machine of rapid prototyping technology. It is based on a digital model file, using special wax, powdered metal or plastic and other bondable materials to print layer by layer. Bonding materials to make three-dimensional objects. The existing powder spreading mechanism spreads powder back and forth at a fixed height. When the powder falls, it is scattered unevenly on the printing platform due to its own gravity. Even the sweeping device cannot ensure that the edge of the printing platform is smooth. The powder material is average, and it is difficult to replace the fixed setting of the powder spreading mechanism. Therefore, we propose an easy-to-replace powder spreading device for 3D printers

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