CN-121989442-A - Extrusion mechanism and 3D printer

CN121989442ACN 121989442 ACN121989442 ACN 121989442ACN-121989442-A

Abstract

The invention discloses an extrusion mechanism and a 3D printer, which relate to the technical field of 3D printing, wherein the extrusion mechanism comprises a shell, a driving device, at least two groups of driven components and a switching driving device, the driving device is arranged on the shell, the at least two groups of driven components are movably connected with the shell, at least one clamping space is arranged between each driven component and the driving device and used for allowing consumable materials to pass through, the switching driving device comprises a switching driving piece and a switching piece, the switching driving piece is arranged on the shell and connected with the output end of the switching driving piece, the switching driving piece is configured to drive the switching piece to selectively drive the driven components to move or rotate, so that the driven components are close to the driving device to clamp the consumable materials in the corresponding clamping space, and the driving device is used for providing moving power for the clamped consumable materials. The technical scheme provided by the invention aims at realizing the switching of various extrusion consumable materials.

Inventors

JI GUOLIANG
TANG JINGKE

Assignees

深圳市创想星匠科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260318
Priority Date: 20251201

Claims (10)

1. An extrusion mechanism is characterized in that, the extrusion mechanism includes: A housing; the active driving device is arranged on the shell; At least two groups of driven components, at least two groups of driven components are movably connected with the shell, at least one clamping space is arranged between each driven component and the driving device, the clamping space is used for allowing consumable to pass through, and The switching driving device comprises a switching driving piece and a switching piece, wherein the switching driving piece is arranged on the shell, and the switching piece is connected to the output end of the switching driving piece; The switching driving piece is configured to drive the switching piece to selectively drive the driven component to move or rotate, so that the driven component is close to the driving device to clamp the consumable in the clamping space, and the driving device is used for providing moving power for the clamped consumable.
2. The extrusion mechanism of claim 1, wherein the switch drive is disposed on a side of the housing facing away from the drive device, the switch drive further configured to drive the switch to selectively move or rotate the driven assembly such that the driven assembly is away from the drive device to release the consumable in the corresponding clamping space.
3. The extrusion mechanism of claim 2, wherein the switching member is provided with an abutment surface disposed along a circumferential direction, the abutment surface abuts against the driven member, the abutment surface comprises an arc section and a straight section which are connected end to end, the switching driving member is used for driving the switching member to rotate so as to drive the straight section to abut against the driven member, so that the driven member is close to the driving device to clamp the consumable, or the switching driving member is used for driving the switching member to rotate so as to drive the arc section to abut against the driven member, so that the driven member is far away from the driving device to release the consumable.
4. The extrusion mechanism of claim 3, wherein the driven assembly comprises two groups of driven assemblies respectively arranged on two opposite sides of the switching piece, or the switching piece comprises a plurality of coaxially arranged switching wheels, each switching wheel is provided with the abutting surface, two sides of each switching wheel are respectively provided with one driven assembly, and any two switching wheels are arranged in a staggered manner on the projection in the axial direction.
5. The extrusion mechanism of any one of claims 1 to 4, wherein the active driving device comprises an active driving member, a transmission assembly and a driving wheel, the transmission assembly is connected to the output end of the active driving member and is in transmission connection with the driving wheel, and the active driving member is used for driving the transmission assembly to drive the driving wheel to rotate so as to drive the consumable to move.
6. The extrusion mechanism of claim 5, wherein the driving wheel is provided with a plurality of guide ring grooves which are arranged at intervals along the axial direction, the guide ring grooves are arranged around the circumference of the driving wheel, two sides of each guide ring groove are respectively provided with a driven component, and the guide ring grooves are used for enclosing with the driven components to form the clamping space.
7. An extrusion apparatus according to any one of claims 1 to 4, wherein the driven assembly comprises a mounting member movably coupled to the housing, an elastic member disposed between the housing and the mounting member, and a driven wheel rotatably coupled to the mounting member.
8. The extrusion mechanism of claim 7, wherein the mounting member comprises a connecting section and a movable section connected in an included angle, the connecting section is rotatably connected with the housing, an abutting projection is arranged at one end of the movable section away from the connecting section, the abutting projection is used for abutting against the switching member, a rotating shaft is arranged at the joint of the connecting section and the movable section, and the driven wheel is sleeved on the rotating shaft.
9. The extrusion mechanism of claim 5, further comprising a guide member coupled to the housing, the guide member having at least two consumable channels for passage of consumables, the guide member being at least partially disposed between the switching member and the capstan.
10. A 3D printer, characterized in that the 3D printer comprises an extrusion mechanism according to any one of claims 1 to 9.

Description

Extrusion mechanism and 3D printer Technical Field The invention relates to the technical field of 3D printing, in particular to an extrusion mechanism and a 3D printer. Background Existing 3D printers based on FDM technology typically feed and print for only one consumable, with only one power unit. And to the switching pay-off of multiple consumptive material, either need shut down the manual replacement consumptive material, the long-time consumption, seriously influence printing experience, or need to correspond multiple consumptive material and set up a plurality of power units respectively, the pay-off and the printing of each power unit independent control consumptive material, this just leads to extrusion mechanism to have structural redundancy, huge, problem such as with high costs. Disclosure of Invention The invention mainly aims to provide an extrusion mechanism and a 3D printer, and aims to realize switching of various extrusion consumables. To achieve the above object, the present invention provides an extrusion mechanism, including: A housing; the active driving device is arranged on the shell; At least two groups of driven components, at least two groups of driven components are movably connected with the shell, at least one clamping space is arranged between each driven component and the driving device, the clamping space is used for allowing consumable to pass through, and The switching driving device comprises a switching driving piece and a switching piece, wherein the switching driving piece is arranged on the shell, and the switching piece is connected to the output end of the switching driving piece; The switching driving piece is configured to drive the switching piece to selectively drive the driven component to move or rotate, so that the driven component is close to the driving device to clamp the consumable in the clamping space, and the driving device is used for providing moving power for the clamped consumable. In an embodiment, the switching driving piece is disposed on a side of the housing, which is away from the active driving device, and the switching driving piece is further configured to drive the switching piece to selectively drive the driven component to move or rotate, so that the driven component is far away from the active driving device to release the consumable in the clamping space. In an embodiment, the switching piece is provided with an abutting surface arranged along the circumferential direction, the abutting surface abuts against the driven component, the abutting surface comprises an arc section and a straight section which are connected end to end, the switching driving piece is used for driving the switching piece to rotate so as to drive the straight section to abut against the driven component, the driven component is close to the driving device to clamp the consumable, or the switching driving piece is used for driving the switching piece to rotate so as to drive the arc section to abut against the driven component, and the driven component is far away from the driving device to release the consumable. In one embodiment, the driven component comprises two groups, the two groups of driven components are respectively arranged on two opposite sides of the switching piece, or the switching piece comprises a plurality of coaxially arranged switching wheels, each switching wheel is provided with the abutting surface, two sides of each switching wheel are respectively provided with the driven component, and any two switching wheels are arranged in a staggered mode on the projection in the axial direction. In an embodiment, the driving device comprises a driving part, a transmission assembly and a driving wheel, wherein the transmission assembly is connected to the output end of the driving part and is in transmission connection with the driving wheel, and the driving part is used for driving the transmission assembly to drive the driving wheel to rotate so as to drive the consumable to move. In an embodiment, the driving wheel is provided with a plurality of guide ring grooves arranged at intervals along the axial direction, the guide ring grooves are arranged around the circumference of the driving wheel, two sides of each guide ring groove are respectively provided with a driven component, and the guide ring grooves are used for encircling with the driven components to form the clamping space. In an embodiment, the driven component comprises a mounting piece, an elastic piece and a driven wheel, wherein the mounting piece is movably connected with the shell, the elastic piece is arranged between the shell and the mounting piece, and the driven wheel is rotatably connected with the mounting piece. In an embodiment, the mounting includes connecting section and the movable section that is the contained angle and connects, the connecting section with the casing rotates to be connected, the movable section is kept away from the one end of connecting section i