CN202986109U

CN202986109U - Wire extruding mechanism applied to 3D (Three-dimensional) printer ejector

Info

Publication number: CN202986109U
Application number: CN201220715740XU
Authority: CN
Inventors: 裴文剑; 陈铮铮
Original assignee: JINHUA SHANZHU TECHNOLOGY Co Ltd
Current assignee: Zhejiang Flashforge 3d Technology Co ltd
Priority date: 2012-12-21
Filing date: 2012-12-21
Publication date: 2013-06-12
Anticipated expiration: 2022-12-21

Abstract

The utility model discloses a wire extruding mechanism applied to a 3D (Three-dimensional) printer ejector. The wire extruding mechanism comprises a front end cover and a rear end cover, wherein a wire feeding wheel which is connected with a motor output shaft is arranged between the front end cover and the rear end cover; V-shaped bearings are connected with two sides of the wire feeding wheel; a printing wire material is embedded between the V-shaped bearings and the wire feeding wheel; a gear is arranged on the outer surface of the wire feeding wheel; the addendum angle of the gear is an acute angle of 10-20 degrees; and V-shaped grooves in the V-shaped bearings are matched with the wire material so as to tightly adhere the wire material to the gear of the wire feeding wheel. The addendum angle of the wire feeding wheel of the wire extruding mechanism can tightly hold the wire material, and the wire material can be reliably extruded into the ejector when the wire feeding wheel rotates by virtue of the clamping force applied to the wire material by the V-shaped bearings, so that the phenomenon of skidding between the wire feeding wheel and the wire material is effectively avoided, and the requirement on the precision of wire materials is greatly lowered. Therefore, the wire extruding mechanism is applicable to wire materials of different sizes and hardness, and has a large application range.

Description

A kind of silk material extrusion mechanism for the 3D printer head

Technical field

The utility model relates to a kind of silk material extrusion mechanism for the 3D printer head.

Background technology

The 3D printing technique is actually the general designation of a series of rapid prototyping forming techniques, its basic principle is all the lamination manufacturing, formed the cross sectional shape of workpiece by the rapid prototyping machine by the scanning form in X-Y plane, and do discontinuously the displacement of slice thickness at the Z coordinate, finally form three-dimensional product.Rapid shaping technique in the market is divided into 3DP technology, FDM fusion stacking forming technique, SLA stereolithography techniques, SLS precinct laser sintering etc.

FDM fusion stacking forming technique is with thread heat-fusible materials heating and melting, and simultaneously three-dimensional shower nozzle under the control of computer, according to cross section profile information, is coated in material selectivity ground on workbench quick cooling rear formation one layer cross section.After one formable layer was completed, one deck under a machine workbench decline height (being lift height) reshaping was until form whole solid modelling.Its moulding material kind is many, and profiled member intensity is high, precision is higher, mainly is applicable to the moulding small plastic part.

At present in use often can encounter following problem based on the 3D printer of FDM principle: 1. in print procedure because of wire feed rolls skid cause not wire vent of shower nozzle or wire vent intermittent; 2. silk stockline footpath dimension overproof, cause shower nozzle stuck.These problems all directly affect the reliability of printer, and are very high to the silk material dimension precision requirement of printing use simultaneously.

The utility model content

The purpose of this utility model is to provide a kind of silk material extrusion mechanism for the 3D printer head.

A kind of silk material extrusion mechanism for the 3D printer head, comprise drive end bearing bracket and rear end cap, be provided with the wire feed rolls that connects motor output shaft between drive end bearing bracket and rear end cap, it is characterized in that: the both sides of wire feed rolls are connected with the V-type bearing, are embedded with the silk material of printing use between V-type bearing and wire feed rolls.

Further, the outer surface of wire feed rolls is provided with the gear teeth.

Further, the addendum angle of the gear teeth is acute angle.

Further, the angle of addendum angle is the 10-20 degree.

Further, the V-type groove on the V-type bearing is complementary with the silk material, and the silk material is adjacent on the gear teeth of wire feed rolls.

The utility model has following beneficial effect owing to having adopted technique scheme:

The addendum angle of wire feed rolls can hold on to the silk material, the clamping force that coordinates simultaneously the V bearing that the silk material is applied, but when rotating, wire feed rolls can clamp-on shower nozzle by wearing or featuring stage armour silk material, effectively avoid the skidding of generation between wire feed rolls and silk material, greatly reduce simultaneously the required precision to the silk material, also can be applicable to the different silk material of size difference, material hardness, the scope of application is large.The utility model manufacturing is easy, cost is low, and is practical.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing:

Fig. 1 is a kind of schematic diagram of expecting extrusion mechanism for the silk of 3D printer head of the utility model;

Fig. 2 is the structural representation of drive end bearing bracket direction of the present utility model;

Fig. 3 is explosive view of the present utility model;

Fig. 4 is I place structure enlarged diagram in Fig. 3.

The specific embodiment

As shown in Figures 1 to 4, be a kind of silk material extrusion mechanism for the 3D printer head of the utility model, comprise drive end bearing bracket 1 and rear end cap 2, be fixedly connected with by bolt 9 between drive end bearing bracket 1 and rear end cap 2, be provided with the wire feed rolls 3 of the output shaft 8 that connects motor 7 between drive end bearing bracket 1 and rear end cap 2, drive wire feed rolls 3 by output shaft 8 and rotate, the outer surface of wire feed rolls 3 is provided with the gear teeth 4, the addendum angle of the gear teeth 4 is acute angle, and the angle of addendum angle is the 10-20 degree.The both sides of wire feed rolls 3 are connected with V-type bearing 5, are embedded with between V-type bearing 5 and wire feed rolls 3 to print with silk material 6, and the V-type groove on V-type bearing 5 is complementary with silk material 6, and silk material 6 is adjacent on the gear teeth 4 of wire feed rolls 3.The addendum angle of wire feed rolls 3 can hold on to silk material 6, the clamping force that coordinates simultaneously the V bearing that silk material 6 is applied, but when rotating, wire feed rolls 3 can clamp-on shower nozzle by wearing or featuring stage armour silk material 6, effectively avoid the skidding of generation between wire feed rolls 3 and silk material 6, greatly reduce simultaneously the required precision to silk material 6, also can be applicable to the different silk material 6 of size difference, material hardness, the scope of application is large.

These are only specific embodiment of the utility model, but technical characterictic of the present utility model is not limited to this.Any take the utility model as the basis, for realizing essentially identical technique effect, done the ground simple change, be equal to replacement or modification etc., all be covered by among protection domain of the present utility model.

Claims

1. a silk that is used for the 3D printer head is expected extrusion mechanism, comprise drive end bearing bracket and rear end cap, be provided with the wire feed rolls that connects motor output shaft between described drive end bearing bracket and described rear end cap, it is characterized in that: the both sides of described wire feed rolls are connected with the V-type bearing, are embedded with between described V-type bearing and described wire feed rolls to print with the silk material.

2. a kind of silk for the 3D printer head according to claim 1 is expected extrusion mechanism, and it is characterized in that: the outer surface of described wire feed rolls is provided with the gear teeth.

3. a kind of silk for the 3D printer head according to claim 2 is expected extrusion mechanism, and it is characterized in that: the addendum angle of the described gear teeth is acute angle.

4. a kind of silk for the 3D printer head according to claim 3 is expected extrusion mechanism, and it is characterized in that: the angle of described addendum angle is the 10-20 degree.

5. a kind of silk for the 3D printer head according to claim 1 is expected extrusion mechanism, it is characterized in that: the V-type groove on described V-type bearing and described silk material are complementary, and described silk material is adjacent on the described gear teeth of described wire feed rolls.