3D printing PLA wire cleaning device

Abstract

The utility model discloses a 3D printing PLA wire cleaning device, and relates to the field of additive manufacturing equipment. The device comprises a wire passing pipe, wherein a PLA wire rod passes through the axis of a pipe cavity of the wire passing pipe; an air outlet window is arranged at the end part of one side, in the incoming direction of the PLA wire, of the wire passing pipe; a penetrating guide pipe for the PLA wire to penetrate through is reserved at the axis of the air outlet window; a wind shield is arranged at the end part of one side, in the PLA wire feeding direction, of the wire passing pipe, and a PLA wire passing hole is reserved in the axis of the wind shield; a blast pipe; the upper end of the air supply pipe is communicated with the inner cavity of the wire passing pipe; a fan is installed in the air supply pipe, and an air outlet of the fan is communicated with the rear portion of the inner cavity of the wire passing pipe. A fixing seat is arranged at the bottom of the air supply pipe, and a filtering HEPA is arranged in the fixing seat in an interference fit mode. The PLA wire rod cleaning device can clean PLA wire rods in real time and remove dust on the surfaces of the PLA wire rods.

Description

TECHNICAL FIELD

[0001] The utility model relates to additive manufacturing equipment field especially 3D printing PLA wire rod cleaning device. BACKGROUND

[0002] PLA wire rod has hygroscopicity, and after absorbing moisture, it will cause the performance of the wire rod to decline, thereby affecting the printing quality. For example, when the damp PLA wire rod is printed, the extruded plastic will contain moisture, and the moisture will become water vapor at high temperature, which will cause defects such as bubbles, cracks and warped edges on the surface of the printed part, reducing the precision and surface smoothness of the printed part.

[0003] The drying box is a device specially used for storing and keeping materials dry. The PLA wire rod can be placed in the drying box, and the appropriate humidity control range is set to ensure that the wire rod is always in a dry state. Some drying boxes also have temperature control function to further protect the performance of the wire rod.

[0004] If dust, oil stains and other impurities are attached to the surface of the wire rod, they are easy to be brought into the extrusion head during the feeding process, and after accumulation, they will block the extrusion head, causing the plastic to be unable to be normally extruded, so that the printing is interrupted. In addition, impurities may also affect the flowability of the plastic, causing uneven extrusion and affecting the printing quality. Before the PLA wire rod is loaded into the 3D printer, the surface of the wire rod is gently wiped with a clean cloth or tissue to remove dust, oil stains and other impurities that may be attached. If there is a lot of dust on the surface of the wire rod, a compressed air tank can be used to blow it clean, but attention should be paid to maintain appropriate distance to avoid damaging the wire rod. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problems existing in the above, provides a kind of 3D printing PLA wire rod cleaning device, it can be cleaned to PLA wire rod in real time, remove its surface dust.

[0006] The technical scheme adopted by the utility model is: a kind of 3D printing PLA wire rod cleaning device is provided, including

[0007] The wire tube, the PLA wire rod passes along the lumen axis of the wire tube; the end of the wire tube is provided with an air outlet window on the side of the PLA wire rod incoming direction; the air outlet window is left with a through guide pipe for the PLA wire rod to pass through; the end of the wire tube is provided with a wind shield on the side of the PLA wire rod feeding direction, and the wind shield is left with a through hole for the PLA wire rod at the axis center;

[0008] Air supply pipe; the upper end of the air supply pipe is communicated with the inner cavity of the wire tube; a fan is installed in the air supply pipe, and the air outlet of the fan is communicated with the rear part of the inner cavity of the wire tube; the bottom of the air supply pipe is provided with a fixing seat, and the fixing seat is provided with a filter gauze in interference fit.

[0009] Further optimize the technical scheme, a kind of 3D printing PLA wire cleaning device further includes spiral winding brush;The spiral winding brush includes spiral frame located at periphery and uniformly distributed in the inside of spiral frame Brush;The spiral winding brush is encapsulated in the inside of the line tube, and is wound in the outside of PLA wire.

[0010] Further optimize the technical scheme, a kind of 3D printing PLA wire cleaning device further includes electric heating device;The electric heating device is encapsulated in the inside of the air supply pipe, downstream of fan air outlet.

[0011] Further optimize the technical scheme, the through conduit of a kind of 3D printing PLA wire cleaning device is PEFE material, and the end of through conduit is frictionally matched with the brush of spiral winding brush.

[0012] Further optimize the technical scheme, the periphery of the fixed seat of a kind of 3D printing PLA wire cleaning device is provided with bolt fixing station.

[0013] Further optimize the technical scheme, the air outlet window of a kind of 3D printing PLA wire cleaning device is detachably connected with the line tube.

[0014] In the technical scheme of the utility model, the PLA wire can be blown by the air sent by fan to remove surface dust in the line tube, and the air entering the line tube is filtered by filter gauze to remove dust, to ensure the cleanliness of PLA wire.

[0015] The spiral winding brush will rotate around PLA wire under the action of fan, which can significantly improve the dust removal effect on PLA surface.

[0016] Other technical effects of the utility model will be gradually clearly described in the expansion of embodiment. DRAWINGS

[0017] Figure 1 It is the structural schematic diagram of the utility model;

[0018] Figure 2 It is Figure 1 Sectional view schematic diagram;

[0019] Figure 3 It is the circuit diagram of the utility model.

[0020] In the drawing, 1, line tube;2, PLA wire;3, air outlet window;4, through conduit;5, wind shield;6, through hole;7, air supply pipe;8, fan;9, fixed seat;10, filter gauze;11, spiral winding brush;12, spiral frame;13, brush;14, electric heating device;15, bolt fixing station;16, sub-control switch;17, master control switch. DETAILED DESCRIPTION

[0021] As Figure 1 , Figure 2 shown, a 3D printing PLA wire cleaning device is provided, comprising

[0022] The wire tube 1, the PLA wire 2 passes through the lumen axis of the wire tube 1; the end of the wire tube 1 on the side of the PLA wire 2 is provided with an air outlet window 3; the axis of the air outlet window 3 is left with a through conduit 4 for the PLA wire 2 to pass through; the end of the wire tube 1 on the side of the PLA wire 2 is provided with a wind shield 5, and the axis of the wind shield 5 is left with a through hole 6 for the PLA wire 2.

[0023] The air supply pipe 7; the upper end of the air supply pipe 7 is in communication with the inner cavity of the wire tube 1; a fan 8 is installed in the air supply pipe 7, and the air outlet of the fan 8 is in communication with the rear part of the inner cavity of the wire tube 1; the bottom of the air supply pipe 7 is provided with a fixing seat 9, and the fixing seat 9 is provided with a filter gauze 10 in interference fit.

[0024] The inner control diameter of the through conduit 4 is greater than the diameter of the PLA wire 2, and in use, the end of the PLA wire 2 is inserted into the through conduit 4 and then comes out of the through hole 6 of the wind shield 5. The power supply of the fan 8 is turned on, air is blown into the inner cavity of the wire tube 1 through the filter gauze 10, and clean air blows off the dust on the PLA wire 2 and discharges from the air outlet window 3.

[0025] Further optimize the embodiment, a 3D printing PLA wire cleaning device further comprises a spiral winding brush 11; the spiral winding brush 11 comprises a spiral frame 12 located at the periphery and a plurality of bristles 13 uniformly distributed on the inner side of the spiral frame 12; the spiral winding brush is packaged in the inside of the wire tube 1 and wound on the outside of the PLA wire 2.

[0026] With the help of the wind power of the fan 8, the spiral winding brush 11 can be driven to rotate around the PLA wire 2, and the bristles can clean the dust on the surface of the PLA wire 2 during rotation without leaving any cleaning dead angle. The cleaning effect is good.

[0027] Further optimize the embodiment, a 3D printing PLA wire cleaning device further comprises an electric heating device 14; the electric heating device 14 is packaged in the inside of the air supply pipe 7 and located downstream of the air outlet of the fan 8.

[0028] As Figure 2 shown, the electric heating device 14 is a resistance wire heater, which heats the air entering the wire tube 1 and dries the surface moisture, which is beneficial to improve the printing quality. As Figure 3 shown, the resistance wire heater and the fan 8 can be arranged in parallel, the resistance wire heater is provided with a separate power supply control switch 16, and the two are jointly controlled by a master control switch 17.

[0029] Further optimize the embodiment, a kind of 3D printing PLA wire cleaning device's through pipe 4 is PEFE material, the end of through pipe 4 is frictionally engaged with the bristle 13 of spiral winding brush 11.

[0030] When spiral winding brush 11 rotates, bristle 13 is frictionally engaged with through pipe 4, PEFE material can reduce friction and noise, and its friction to PLA wire 2 is smaller.

[0031] Further optimize the embodiment, a kind of 3D printing PLA wire cleaning device's fixed seat 9 is provided with bolt fixing station 15 around.

[0032] Since PLA wire 2 is constantly entered into 3D printer when 3D printer operates, vibration to the device can be caused.Therefore, by bolt fixing station 15, the device can be fixed on 3D printer, so that it is fixed firm, synchronized with the vibration of 3D printer, and does not cause interference to the feeding of PLA wire 2.

[0033] Further optimize the embodiment, a kind of 3D printing PLA wire cleaning device's air outlet window 3 is detachably connected with the wire tube 1.When replacing PLA wire 2, air outlet window 3 is detached from wire tube 1, including threaded connection or interference buckling;Spiral winding brush 11 is conveniently wrapped around new PLA wire 2;In addition, through pipe 4 is in long-term friction state with PLA wire 2 and spiral winding brush 11, and is prone to wear, so detachable connection is replaced conveniently.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0035] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the present application.

Claims

1. A 3D printing PLA wire cleaning device for cleaning of PLA wire, characterized by: Comprising The PLA wire passes through the lumen axis of the wire tube; the end of the wire tube on the side of the PLA wire feeding direction is provided with an air outlet window; the axis of the air outlet window is provided with a passing guide tube for the PLA wire; the end of the wire tube on the side of the PLA wire feeding direction is provided with a wind shield, and the axis of the wind shield is provided with a passing hole for the PLA wire; The air supply pipe is in communication with the inner cavity of the wire tube at the upper end; a fan is installed in the air supply pipe, and the air outlet of the fan is in communication with the rear part of the inner cavity of the wire tube; a fixing seat is arranged at the bottom of the air supply pipe, and a filter gauze is tightly fitted in the fixing seat.

2. The 3D printing PLA wire cleaning device according to claim 1, characterized in that: Further comprising a spiral winding brush; the spiral winding brush comprises a spiral frame at the periphery and brush hairs uniformly distributed inside the spiral frame; the spiral winding brush is encapsulated inside the wire tube and wound outside the PLA wire.

3. The 3D printing PLA wire cleaning device according to claim 2, characterized in that: Further comprising an electric heating device; the electric heating device is encapsulated inside the air supply pipe and located downstream of the air outlet of the fan.

4. The 3D printing PLA wire cleaning device according to claim 2, characterized in that: The end of the passing guide tube is in frictional engagement with the brush hairs of the spiral winding brush.

5. The 3D printing PLA wire cleaning device according to claim 1, characterized in that: A screw fixing station is arranged around the fixing seat.

6. The 3D printing PLA wire cleaning device according to claim 1, characterized in that: The air outlet window is detachably connected with the wire tube.

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