US 12,358,220 B2
Switching device and 3D printing apparatus
Jingke Tang, Shenzhen (CN); Dajiang Wu, Shenzhen (CN); and Bo Gong, Shenzhen (CN)
Assigned to SHENZHEN CREALITY 3D TECHNOLOGY CO., LTD., Guangdong (CN)
Filed by SHENZHEN CREALITY 3D TECHNOLOGY CO., LTD., Guangdong (CN)
Filed on Jan. 13, 2025, as Appl. No. 19/019,015.
Application 19/019,015 is a continuation of application No. PCT/CN2023/105141, filed on Jun. 30, 2023.
Claims priority of application No. 202210820723.0 (CN), filed on Jul. 13, 2022.
Prior Publication US 2025/0144876 A1, May 8, 2025
Int. Cl. B29C 64/241 (2017.01); B29C 64/118 (2017.01); B29C 64/209 (2017.01); B29C 64/336 (2017.01); B33Y 30/00 (2015.01); B33Y 40/00 (2020.01)
CPC B29C 64/241 (2017.08) [B29C 64/118 (2017.08); B29C 64/209 (2017.08); B29C 64/336 (2017.08); B33Y 30/00 (2014.12); B33Y 40/00 (2014.12)] 15 Claims
OG exemplary drawing
 
1. A switching device for a three-dimensional (3D) printing apparatus, comprising:
a rack;
an extrusion assembly connected to the rack and comprising a driving roller, and a first pressing wheel and a second pressing wheel located on a circumferential outer side of the driving roller, and transport channels allowing consumables to pass being formed between the driving roller and the first pressing wheel and between the driving roller and the second pressing wheel;
a driving assembly connected to the rack;
a pushing assembly connected to rack and comprising a pushing portion, wherein the pushing portion is capable of pushing a target consumable to move relative to driving roller to a preset position corresponding to the target consumable under a drive of the driving assembly, so as to restrict the target consumable from moving, wherein the target consumable is one of the consumables located in different transport channels; and wherein the pushing assembly further comprises a support plate connected to a power output end of the driving assembly, the first pressing wheel and the second pressing wheel are mounted on the support plate, and the pushing portion is connected to the support plate; wherein the support plate has a first limiting position and a second limiting position, and the support plate is configured to drive the first pressing wheel and the second pressing wheel to move reciprocally between the first limiting position and the second limiting position under the drive of the driving assembly.