A consumable breakage assisted extrusion structure

Abstract

The utility model discloses a kind of auxiliary extrusion structures of consumable fracture, belong to 3D printing consumable technical field, it includes: shell, and the wire coil and extrusion assembly being set in shell inside;Extrusion assembly includes setting on the guide frame of shell inner side wall, first extrusion roller and second extrusion roller being rotationally arranged in guide frame, drive assembly that drives first extrusion roller and second extrusion roller linkage, and knob connected with drive assembly;First extrusion roller and second extrusion roller are parallelly arranged between, form the clearance for the thread of consumable to go out;Knob is embedded in the side wall of shell.The utility model sets extrusion assembly in the packaging shell of consumable, extrusion assembly does not affect the normal thread of consumable to go out in normal thread process, when consumable fracture, only need to forwardly screw knob, can extrude the thread of consumable to the outside, make 3D printing process continue, ensure the continuity of 3D printing process, improve the printing efficiency of 3D printing.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing consumables technology, specifically to a consumable fracture-assisted extrusion structure. Background Technology

[0002] During the 3D printing process, the filament (filament) is under continuous tension as it is continuously produced. Stress concentration occurs at the filament exit point, making it prone to breakage. Since the casing is not easy to open, the broken filament cannot be led out, affecting the 3D printing process. If the casing is forcibly opened, it may also be damaged, rendering the remaining filament unusable. Utility Model Content

[0003] The purpose of this invention is to provide a consumable fracture-assisted extrusion structure to solve the problem that it is inconvenient to pull out the thread end after the existing consumable breaks.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows:

[0005] A consumable fracture-assisted extrusion structure includes: a housing, and a coil and an extrusion assembly disposed within the housing; the extrusion assembly includes a guide frame disposed on the inner side wall of the housing, a first extrusion roller and a second extrusion roller rotatably disposed within the guide frame, a drive assembly that drives the first extrusion roller and the second extrusion roller to move in conjunction, and a knob connected to the drive assembly; the first extrusion roller and the second extrusion roller are arranged in parallel to each other to form a gap for the consumable to pass through; the knob is embedded in the side wall of the housing.

[0006] Furthermore, the aforementioned drive assembly includes a first rotating shaft connected to a first extrusion roller, a second rotating shaft connected to a second extrusion roller, a first gear disposed on the first rotating shaft, and a second gear disposed on the second rotating shaft; the first rotating shaft is connected to a knob, and the first gear meshes with the second gear.

[0007] Furthermore, the aforementioned first and second rotating shafts are rotatably engaged with the guide frame.

[0008] Furthermore, the aforementioned drive assembly also includes a third rotating shaft that rotatably engages with the guide frame. The third rotating shaft is equipped with a third gear and a friction wheel. The third gear meshes with the first gear, and the friction wheel contacts and engages with the rim of the spool.

[0009] Furthermore, the guide frame is provided with upstream cable passage holes and downstream cable passage holes at the two ends of the gap, respectively.

[0010] Furthermore, the aforementioned housing is provided with a cable outlet tube, and the side wall of the housing is provided with a cable outlet hole, with the two ends of the cable outlet tube facing the downstream cable passage hole and the cable outlet hole, respectively.

[0011] This utility model has the following beneficial effects:

[0012] (1) The present invention provides an extrusion component inside the packaging shell of the consumable. During the normal thread output process of the consumable, the extrusion component will not affect the normal thread output of the consumable. When the consumable breaks, the knob only needs to be turned in the forward direction to extrude the thread end of the consumable outward, so that the 3D printing process can continue, ensuring the continuity of the 3D printing process and improving the printing efficiency of 3D printing.

[0013] (2) The friction wheel of this utility model is in contact with the rim of the spool. During 3D printing, the friction between the friction wheel and the spool can prevent the spool from rotating excessively and ensure that the consumable has a certain tension. In addition, after 3D printing is completed, the knob is turned in the opposite direction and the friction wheel drives the spool to rotate in the opposite direction, so that the consumable can be wound in the opposite direction onto the spool and the external consumable can be stored in the opposite direction. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the external structure of the consumable fracture-assisted extrusion structure according to an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the spool and the extrusion assembly in an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of the extrusion assembly according to an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram of the guide frame structure according to an embodiment of the present utility model;

[0018] Figure 5 This is a schematic diagram of the guide frame from another direction according to an embodiment of the present invention.

[0019] In the diagram: 10-Housing; 11-Outlet tube; 12-Outlet hole; 20-Wire reel; 30-Extrusion assembly; 31-Guide frame; 32-First extrusion roller; 33-Second extrusion roller; 34-Drive assembly; 35-Knob; 311-Upstream wire passage hole; 312-Downstream wire passage hole; 341-First shaft; 342-Second shaft; 343-First gear; 344-Second gear; 345-Third shaft; 346-Third gear; 347-Friction wheel. Detailed Implementation

[0020] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0021] This embodiment provides a filament breakage-assisted extrusion structure, including a housing 10, a spool 20 and an extrusion assembly 30 disposed within the housing 10. The spool 20 is rotatably disposed inside the housing 10, and the filament is wound around the spool 20 with the thread end exiting from the housing 10. The extrusion assembly 30 is disposed inside the housing 10 near the filament thread exit position, used for manually releasing the thread when the filament breaks, and also for rewinding and storing the filament on the spool 20 after 3D printing is completed.

[0022] The extrusion assembly 30 includes a guide frame 31, a first extrusion roller 32, a second extrusion roller 33, a drive assembly 34, and a knob 35. The guide frame 31 is fixedly mounted on the inner wall of the housing 10. The first extrusion roller 32 and the second extrusion roller 33 are arranged parallel to each other inside the guide frame 31 and can rotate within the guide frame 31. A gap is formed between the first extrusion roller 32 and the second extrusion roller 33 for consumables to pass through. The guide frame 31 has an upstream wire passage hole 311 and a downstream wire passage hole 312 at both ends of the gap, respectively. The drive assembly 34 is connected to the first extrusion roller 32, the second extrusion roller 33, and the knob 35. When the knob 35 is turned, the knob 35 can drive the first extrusion roller 32 and the second extrusion roller 33 to rotate synchronously through the drive assembly 34. At the same time, the rotation directions of the first extrusion roller 32 and the second extrusion roller 33 are opposite.

[0023] In this embodiment, the housing 10 has an internal cable outlet tube 11 and a cable outlet hole 12 on its side wall. The two ends of the cable outlet tube 11 face the downstream cable passage hole 312 and the cable outlet hole 12, respectively. The filament passes sequentially through the upstream cable passage hole 311, the gap, the downstream cable passage hole 312, the cable outlet tube 11, and the cable outlet hole 12. Since the filament is prone to breakage at bending points, such as at the ends of the cable outlet tube 11 or the cable outlet hole 12, the broken filament thread can be squeezed out of the housing 10 by externally rotating the knob 35, avoiding disassembly of the housing 10. This ensures the continuity of the 3D printing process and improves the printing efficiency.

[0024] In this embodiment, the drive assembly 34 includes a first rotating shaft 341, a second rotating shaft 342, a first gear 343, and a second gear 344. One end of the first rotating shaft 341 is connected to a knob 35, which is embedded in the side wall of the housing 10 to prevent it from protruding from the surface of the housing 10. The other end of the first rotating shaft 341 is connected to a first extrusion roller 32, and the first rotating shaft 341 is rotatably engaged with the guide frame 31 near both ends of the first extrusion roller 32. The second rotating shaft 342 is connected to a second extrusion roller 33, and both ends of the second rotating shaft 342 are rotatably engaged with the guide frame 31 near both ends of the second extrusion roller 33. The first gear 343 is mounted on the first rotating shaft 341, and the second rotating shaft 342 is mounted on the second rotating shaft 342. The first rotating shaft 341 and the second rotating shaft 342 are fitted together to achieve synchronous rotation between the first extrusion roller 32 and the second extrusion roller 33.

[0025] When the consumable breaks, turn the knob 35 forward to make the first extrusion roller 32 and the second extrusion roller 33 rotate synchronously, driving the consumable to run out of the housing 10.

[0026] The drive assembly 34 also includes a third rotating shaft 345 that rotates with the guide frame 31. The third rotating shaft 345 is provided with a third gear 346 and a friction wheel 347. The third gear 346 meshes with the first gear 343, and the friction wheel 347 contacts and engages with the rim of the spool 20.

[0027] During 3D printing, the friction between the friction wheel 347 and the spool 20 can prevent the spool 20 from rotating excessively, ensuring that the filament has a certain tension. In addition, after 3D printing is completed, the knob 35 is turned in the opposite direction, and the friction wheel 347 drives the spool 20 to rotate in the opposite direction, so that the filament can be wound onto the spool 20 in the opposite direction, and the external filament can be stored in the opposite direction.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A consumable fracture-assisted extrusion structure, characterized in that, include: The housing (10), and the coil (20) and extrusion assembly (30) disposed within the housing (10); the extrusion assembly (30) includes a guide frame (31) disposed on the inner side wall of the housing (10), a first extrusion roller (32) and a second extrusion roller (33) rotatably disposed within the guide frame (31), a drive assembly (34) that drives the first extrusion roller (32) and the second extrusion roller (33) to move together, and a knob (35) connected to the drive assembly (34); the first extrusion roller (32) and the second extrusion roller (33) are arranged in parallel to each other to form a gap for the consumable to pass through; the knob (35) is embedded in the side wall of the housing (10).

2. The consumable breakage-assisted extrusion structure of claim 1, wherein, The drive assembly (34) includes a first shaft (341) connected to a first extrusion roller (32), a second shaft (342) connected to a second extrusion roller (33), a first gear (343) disposed on the first shaft (341), and a second gear (344) disposed on the second shaft (342); the first shaft (341) is connected to the knob (35), and the first gear (343) meshes with the second gear (344).

3. The consumable breakage-assisted extrusion structure of claim 2, wherein, The first rotating shaft (341) and the second rotating shaft (342) are rotatably engaged with the guide frame (31).

4. The consumable fracture-assisted extrusion structure according to claim 2, characterized in that, The drive assembly (34) further includes a third rotating shaft (345) that rotates with the guide frame (31). The third rotating shaft (345) is provided with a third gear (346) and a friction wheel (347). The third gear (346) meshes with the first gear (343), and the friction wheel (347) contacts the rim of the spool (20).

5. The consumable breakage-assisted extrusion structure of claim 1, wherein, The guide frame (31) is provided with an upstream wire passage hole (311) and a downstream wire passage hole (312) at the two ends of the gap, respectively.

6. The consumable breakage-assisted extrusion structure of claim 5, wherein, The housing (10) is provided with a cable outlet pipe (11), and the side wall of the housing (10) is provided with a cable outlet hole (12). The two ends of the cable outlet pipe (11) are respectively facing the downstream cable passage hole (312) and the cable outlet hole (12).

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