CN105058803A - Feeding reinforcing device of double-nozzle 3D printer and feeding device - Google Patents

Abstract

The invention discloses a feeding strengthening device for a double-nozzle 3D printer. Wire wheel, external bearing, V-shaped bracket and feeding rod, the external motor is fixed on the upper side of the installation box, the external wire feeding wheel is fixed on the external motor and driven by the external motor, the external bearing is arranged on one side of the external wire feeding wheel and the external The bearing is rotated on the top of one side of the V-shaped bracket, and the bottom of the V-shaped bracket is hinged on the side of the installation box. The V-shaped bracket is provided with a pressing mechanism that presses the external bearing on the external wire feed wheel, and the feeding rod It is a hollow cylinder, and the other side of the V-shaped support has a through hole matching the inner diameter of the cylinder of the feed rod, and one end of the feed rod is fixed at the position of the through hole on the other side of the V-shaped support. The invention has simple structure, is convenient to popularize, and feeds smoothly.

Description

Double-nozzle 3D printer feeding strengthening device and feeding device

technical field

The invention relates to a double-nozzle 3D printer feeding reinforcement device and a feeding device, belonging to the field of 3D printing.

Background technique

3D printing, also known as additive manufacturing, is a type of rapid prototyping technology. 3D printing technology appeared in the 1980s, but it has only been used more and more in recent years due to cost reasons. The principle of fused deposition modeling 3D printing technology: heat and melt the filamentary hot-melt material, and extrude the material through an extruder with a fine nozzle. The nozzle can move along the Y-axis and Z-axis, and the table moves along the X-axis. The molten filament will be bonded with the previous layer of material immediately after being extruded. After a layer of material is deposited, the table will rise by a thickness in predetermined increments, and then repeat the above steps until the workpiece is fully formed.

The 3D printer filament is fed into the heating part of the nozzle of the 3D printer through the feeding device of the fused deposition modeling type 3D printer. Since the feeding speed of the feeding device determines the extrusion speed of the molten filament material, the feeding device is a very important part to ensure the processing accuracy of the fused deposition modeling type 3D printer. The currently commonly used feeding device is composed of an internal motor, an internal wire feed wheel, an internal bearing and an internal spring. When working, the internal bearing presses the wire material tightly on the internal wire feed wheel under the force of the internal spring, and the internal motor Under the rotation, the wire material moves up and down with the rotation of the internal wire feed roller. However, this device has the following disadvantages: one is that after a long time of work, the feeding device wears out, which will cause the silk to slip and the extrusion pressure to be uneven, resulting in a reduction in printing accuracy; the other is that the existing feeding device is for To ensure the accuracy of wire feeding, the diameter of the inlet and outlet of the device is designed to be small, but in practice, the wire material softens and expands after being heated, which will cause the wire material to stick to the inlet when feeding, and the wire feeding will not be smooth. Stuck in the feeding port, the wire is withdrawn slowly. The 3rd, existing feeding device can occur the phenomenon that silk material slips after motor reaches certain speed, can't satisfy the requirement that needs fast wire feeding situation.

Contents of the invention

The technical problem to be solved by the present invention is to provide a dual-nozzle 3D printer feeding strengthening device and feeding device, which solves the problem of slipping of the feeding wire feeding wheel, and the wire feeding is smooth.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A double-nozzle 3D printer feeding strengthening device is characterized in that: it includes two strengthening mechanisms respectively arranged on the two nozzles of the dual-nozzle 3D printer, and the strengthening mechanism includes an installation box, an external motor, an external wire feed wheel, an external Bearing, V-shaped bracket and feed rod, the external motor is fixed on the upper side of the installation box, the external wire feed wheel is fixed on the external motor and driven by the external motor, the external bearing is arranged on one side of the external wire feed wheel and the rotation of the external bearing is set on The top end of one side of the V-shaped bracket, the bottom end of the V-shaped bracket is hinged on the side of the installation box, the V-shaped bracket is provided with a pressing mechanism that presses the external bearing on the external wire feeding wheel, and the feeding rod is a hollow cylinder , The other side of the V-shaped bracket is provided with a through hole matching the inner diameter of the feed rod cylinder, and one end of the feed rod is fixed at the through hole position on the other side of the V-shaped bracket.

Further, the lower side of the installation box is provided with a cavity matching the feeding device of the 3D printer.

Further, the rotation speed of the external motor is lower than the rotation speed of the internal motor of the feeding device of the 3D printer.

Further, the pressing mechanism includes a counterweight, and the counterweight is fixed on the top end of the other side of the V-shaped bracket.

Further, the pressing mechanism includes a torsion spring, and the torsion spring is arranged on the hinge shaft between the V-shaped bracket and the installation box.

Further, it includes a double-nozzle 3D printer feeding strengthening device.

Compared with the prior art, the present invention has the following advantages and effects:

1. The feeding strengthening device of the dual-nozzle 3D printer has a simple structure and low cost, and can be directly installed on the feeding device of the existing dual-nozzle 3D printer, which is convenient for installation and popularization and application;

2. The double-nozzle 3D printer feeding strengthening device cooperates with the internal motor of the feeding device through the external motor to increase the driving force of wire feeding, thus solving the problem of unsmooth wire feeding caused by thermal expansion of small wire materials at the wire feeding port;

3. The double-nozzle 3D printer feeding strengthening device feeds the material through the differential speed of the external motor and the internal motor of the feeding device, which ensures the tension of the wire material and solves the problem of wire material slippage.

Description of drawings

Fig. 1 is a schematic diagram of a 3D printer feeding strengthening device with dual nozzles of the present invention.

Fig. 2 is a schematic diagram of one side of the feeding device of the 3D printer feeding strengthening device with dual nozzles of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.

Example 1:

As shown in the figure, the dual-nozzle 3D printer feeding strengthening device of the present invention includes two strengthening mechanisms respectively arranged on the two nozzles of the dual-nozzle 3D printer. The strengthening mechanism includes an installation box 1, an external motor 2, and an external wire feed wheel 3. External bearing 4, V-shaped bracket 5, feed rod 6 and connecting plate 8, external motor 2 is fixed on the upper side of installation box 1, external wire feed wheel 3 is fixed on external motor 2 and driven by external motor 2, external bearing 4 It is arranged on one side of the external wire feed roller 3 and the external bearing 4 is rotated and arranged on the top of one side of the V-shaped support 5. The bottom end of the V-shaped support 5 is hinged on the side of the installation box 1. The V-shaped support 5 is provided with the external bearing 4 The pressing mechanism pressed on the external wire feed wheel 3, the feed rod 6 is a hollow cylinder, the other side of the V-shaped bracket 5 has a through hole matching the inner diameter of the feed rod 6 cylinder, and one end of the feed rod 6 is fixed on the At the position of the through hole on the other side of the V-shaped bracket 5, the connecting plate 8 fixes the two installation boxes 1 together. The lower side of the installation box 1 is provided with a cavity that matches the feeding device of the 3D printer, so that the original feeding device can be directly placed in the cavity and installed, so that the feeding strengthening device of the 3D printer of the present invention is more convenient to use and easy to promote . The rotation speed of the external motor 2 is lower than the rotation speed of the internal motor of the 3D printer feeding device. In this way, the tension of the wire feeding is guaranteed through the rotation speed difference between the external motor 2 and the internal motor, thus solving the problem of wire feeding caused by thermal expansion of the small wire at the wire feeding port The problem of unsmoothness is solved, and the problem of silk slippage is also solved. The pressing mechanism comprises a counterweight 7, and the counterweight 7 is fixed on the top of the other side of the V-shaped support 5, so that the external bearing 4 is pressed against the external bearing 4 by the lever formed by the counterweight 7 by its own gravity and the V-shaped support 5. External wire feed roll 3 on.

Example 2:

Installation box 1, external motor 2, external wire feed roll 3, external bearing 4, V-shaped bracket 5, feed rod 6 and connecting plate 8, external motor 2 is fixed on the upper side of installation box 1, and external wire feed roll 3 is fixed on the outside The motor 2 is driven by the external motor 2, the external bearing 4 is arranged on one side of the external wire feed wheel 3 and the external bearing 4 is rotated and arranged on the top of one side of the V-shaped bracket 5, and the bottom end of the V-shaped bracket 5 is hinged on the side of the installation box 1 , the V-shaped support 5 is provided with a pressing mechanism that presses the external bearing 4 on the external wire feed wheel 3, the feeding rod 6 is a hollow cylinder, and the other side of the V-shaped support 5 is provided with a cylinder that is connected to the feeding rod 6 A through hole with a matched inner diameter, one end of the feeding rod 6 is fixed at the through hole position on the other side of the V-shaped bracket 5, and the connecting plate 8 fixes the two installation boxes 1 together. The lower side of the installation box 1 is provided with a cavity that matches the feeding device of the 3D printer, so that the original feeding device can be directly placed in the cavity and installed, so that the feeding strengthening device of the 3D printer of the present invention is more convenient to use and easy to promote . The rotation speed of the external motor 2 is lower than the rotation speed of the internal motor of the 3D printer feeding device. In this way, the tension of the wire feeding is guaranteed through the rotation speed difference between the external motor 2 and the internal motor, thus solving the problem of wire feeding caused by thermal expansion of the small wire at the wire feeding port The problem of unsmoothness is solved, and the problem of silk slippage is also solved. The pressing mechanism includes a torsion spring, and the torsion spring is arranged on the hinge shaft of the V-shaped bracket and the installation box, and the external bearing 4 is pressed on the external wire feed wheel 3 by the torsion force of the torsion spring.

As shown in the figure, the feeding device with double-spraying 3D printer feeding strengthening device of the present invention includes a double-spraying 3D printer feeding strengthening device, and the feeding device can be directly installed in the cavity 7 of the feeding strengthening device.

The above content described in this specification is only an illustration of the present invention. Those skilled in the technical field to which the present invention belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, as long as they do not deviate from the content of the description of the present invention or exceed the scope defined in the claims , should belong to the protection scope of the present invention.

Claims (6)

1. a two shower nozzle 3D printer feeding stiffening device, it is characterized in that: comprise the reinforcing mechanisms on two two shower nozzles being separately positioned on two shower nozzle 3D printer, described reinforcing mechanisms comprises mounting box, external motor, outside wire feed rolls, external bearings, V-type support and feeding rod, described external motor is fixed on the upside of mounting box, outside wire feed rolls is fixed in external motor and is driven by external motor, external bearings is arranged on outside wire feed rolls side and external bearings rotates the top being arranged on a limit of V-type support, V-type support bottom is hinged on mounting box side, described V-type support is provided with hold-down mechanism external bearings be pressed on outside wire feed rolls, feeding rod is hollow cylinder, another limit of V-type support has the through hole mated with feeding rod barrel bore, feeding rod one end is fixed on the lead to the hole site on another limit of V-type support.

2., according to according to claim 1 pair of shower nozzle 3D printer feeding stiffening device, it is characterized in that: on the downside of described mounting box, be provided with the cavity mated with 3D printer pay-off.

3., according to according to claim 1 pair of shower nozzle 3D printer feeding stiffening device, it is characterized in that: described external motor rotating speed is less than the rotating speed of the motor internal of 3D printer pay-off.

4., according to according to claim 1 pair of shower nozzle 3D printer feeding stiffening device, it is characterized in that: described hold-down mechanism comprises balancing weight, described balancing weight is fixed on the top on another limit of V-type support.

5., according to according to claim 1 pair of shower nozzle 3D printer feeding stiffening device, it is characterized in that: described hold-down mechanism comprises torsion spring, described torsion spring is arranged on V-type support and mounting box jointed shaft.

6. there is a pay-off for according to claim 1 pair of shower nozzle 3D printer feeding stiffening device, it is characterized in that: it comprises two shower nozzle 3D printer feeding stiffening device.