CN113021883A

CN113021883A - 3D printing front end and heating block of 3D printer

Info

Publication number: CN113021883A
Application number: CN202110328457.5A
Authority: CN
Inventors: 叶勤; 罗正璋
Original assignee: Zhongke Microelectronics Technology Shenzhen Co ltd
Current assignee: Zhongke Microelectronics Technology Shenzhen Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-06-25

Abstract

The invention provides a 3D printing front end and a heating block of a 3D printer, wherein the 3D printing front end of the 3D printer comprises a printing spray head, the printing spray head comprises a double-color discharging mechanism and a heat dissipation component, the double-color discharging mechanism can print consumables of two colors, and the heat dissipation component is arranged on the double-color discharging mechanism. The heating block of 3D printer, including the heating hole that is used for installing the mounting hole on the nozzle and is used for installing the heating rod, the heating hole is two, and two heating hole distances the position of mounting hole equals, and the heating rod has all been installed in during operation, two heating holes. The invention can realize double-color printing, and can improve the printing efficiency of the 3D printer under the condition of ensuring qualified printing quality.

Description

3D printing front end and heating block of 3D printer

Technical Field

The invention relates to the field of 3D printing, in particular to a 3D printing front end and a heating block of a 3D printer.

Background

Current 3D printer, double-colored printer especially can use the consumptive material of two kinds of colours to print at the printing in-process, and this application provides a neotype, 3D that the double-colored 3D advertisement typeface of specially adapted prints the front end. In addition, the printing efficiency of the 3D printer is a key point for improving market competitiveness, and the existing 3D printer still has a room for further improving the printer, so that the prior art still needs to be improved and improved.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present invention is directed to a 3D printing front end and a heating block of a 3D printer.

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a heating block of 3D printer, is including the heating hole that is used for installing the mounting hole on the nozzle and is used for installing the heating rod, the heating hole is two, and two heating hole distances the position of mounting hole equals, and the heating rod has all been installed in the during operation to two heating holes.

Furthermore, the heating block of the 3D printer is arranged in the heating hole, and the heating power of the heating rod is not more than 45 w.

Specifically, the heating block of the 3D printer is installed in the heating rod in the heating hole, and the heating power is 40 w.

The utility model provides a 3D of 3D printer prints front end, is including printing the shower nozzle, it includes that the consumptive material that can use two kinds of colours carries out the double-colored discharge mechanism who prints and heat dissipation part to print the shower nozzle, heat dissipation part install in on the double-colored discharge mechanism.

In a preferred embodiment, the 3D printing front end further includes a glue filling nozzle for filling liquid glue.

In a preferred embodiment, 3D print the front end, double-colored discharge mechanism include extruder, radiating block, nozzle and heating block, the extruder is located the nozzle top, the radiating block set up in the upper portion of nozzle, the heating block install in on the nozzle, be close to the discharge end of nozzle, the extruder is a pair of, predetermine the angle between the feeding direction of extruder and the discharge direction of nozzle, two consumptive materials are respectively through two extruders with predetermine the angle to the nozzle feed, during operation, an extruder drive consumptive material is walked the material in to the nozzle, under the heating effect of heating block, the consumptive material of the discharge end of nozzle melts and is extruded.

Further, the 3D printing front end, the heating block is the heating block of the 3D printer according to any one of claims 1 to 3.

Furthermore, one side of the heating block is also provided with a leveling probe for leveling the printing platform.

Further, the 3D print front end, the heat dissipation part includes the heat dissipation casing, the heat dissipation casing covers and locates on the nozzle, the front of heat dissipation casing is provided with and is used for exporting the heat of nozzle outside the heat dissipation casing, the both sides setting of heat dissipation casing is provided with second fan and the third fan that is used for the below blast air to the nozzle respectively, the bottom of heat dissipation casing is provided with ejection of compact opening.

Furthermore, 3D print the front end, the both sides of heat dissipation casing are provided with the air guide channel that supplies second fan and third fan blast air direction.

In a preferred embodiment, 3D print the front end, it is provided with the lifting unit who is used for the drive to print shower nozzle position change in the Z axle direction to print on the shower nozzle, lifting unit separates the walking silk route of two consumptive materials of 3D printer, and the during operation the top of lifting unit is higher than the top of printing the shower nozzle, the rear side of printing the shower nozzle is provided with the line concentration case, lifting unit with be provided with the first tow chain that is used for walking the line between the line concentration case, outside spool is walked the line through the line concentration case and is connected with printing the shower nozzle.

Compared with the prior art, the invention provides a 3D printing front end and a heating block of a 3D printer, wherein the 3D printing front end of the 3D printer comprises a printing spray head, the printing spray head comprises a double-color discharging mechanism and a heat dissipation part, the double-color discharging mechanism can print consumables of two colors, and the heat dissipation part is arranged on the double-color discharging mechanism. The heating block of 3D printer, including the heating hole that is used for installing the mounting hole on the nozzle and is used for installing the heating rod, the heating hole is two, and two heating hole distances the position of mounting hole equals, and the heating rod has all been installed in during operation, two heating holes. The invention can realize double-color printing, and can improve the printing efficiency of the 3D printer under the condition of ensuring qualified printing quality.

Drawings

Fig. 1 is a schematic structural diagram of a 3D printing front end of a 3D printer according to the present invention.

Fig. 2 is an exploded schematic view of a 3D printing front end of the 3D printer according to the present invention.

Fig. 3 is a schematic diagram of a two-color discharging mechanism at the front end of 3D printing of the 3D printer provided by the invention.

Fig. 4 is a schematic structural diagram of a heating block at the front end of 3D printing of the 3D printer provided by the present invention.

Fig. 5 is a schematic structural diagram of a heat dissipation component at the front end of 3D printing of the 3D printer provided by the present invention.

Fig. 6 is a perspective structural schematic diagram of a heat dissipation housing at a 3D printing front end of the 3D printer provided by the invention.

FIG. 7 is a schematic cross-sectional view of a heat dissipation block at the front end of a 3D printer according to the present invention

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

It will be understood that when an element is referred to as being "on," "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present.

It should be noted that the terms of orientation such as left, right, up and down in the embodiments of the present invention are only relative to each other or are referred to the normal use state of the product, and should not be considered as limiting.

As shown in fig. 1 and 2, the 3D printing front end of a 3D printer according to the present invention includes a printing head 301, wherein the printing head 301 includes a two-color discharging mechanism 310 capable of printing with consumables 302 of two colors and a heat dissipating member 320, and the heat dissipating member 320 is mounted on the two-color discharging mechanism 310.

Preferably, the printing nozzle 301 is further provided with a glue filling nozzle 303 for filling liquid glue, and the glue filling nozzle 303 is a pneumatic control glue filling nozzle 303 for spraying the liquid glue, such as acrylic glue, into the 3D model to be molded.

Further, referring to fig. 1 and fig. 3, the two-color discharging mechanism 310 includes an extruder 311, a heat dissipation block 312, a nozzle 313 and a heating block 314, the extruder 311 is located above the nozzle 313, the heat dissipation block 312 is disposed on the upper portion of the nozzle 313, the heating block 314 is mounted on the nozzle 313 and near the discharging end of the nozzle 313, the extruders 311 are a pair, a preset angle is formed between the feeding direction of the extruder 311 and the discharging direction of the nozzle 313, the two consumables 302 are respectively fed to the nozzle 313 through the two extruders 311 at the preset angle, when in operation, one extruder 311 drives one consumable 302 to feed into the nozzle 313, and the consumables 302 at the discharging end of the nozzle 313 are melted and extruded under the heating action of the heating block 314. The invention adopts the same nozzle 313 to discharge the two-color consumable 302, reduces the feeding resistance of the consumable 302 by a mode of presetting an angle between the feeding direction of the extruder 311 and the discharging direction of the nozzle 313, ensures the smooth continuous feeding of the consumable 302, has compact structure and small space occupation, and is beneficial to accurately controlling the printing position of the printing nozzle 301.

Further, the preset angle between the feeding direction of the extruder 311 and the discharging direction of the nozzle 313 is 6-18 degrees. Preferably, the predetermined angle between the feeding direction of the extruder 311 and the discharging direction of the nozzle 313 is 11 degrees. Further, the two extruders 311 of the two-color discharging mechanism 310 are symmetrically arranged. One side of the extruder 311 is provided with a control motor 315 for controlling the operation of the extruder 311, and the control motor 315 is a closed-loop motor. More specifically, the internal structure of the heat dissipating block 312 of the present embodiment is shown in fig. 7, in which a symmetrically disposed inclined through hole 3121 is provided to the nozzle 313.

Further, the two-color discharging mechanism 310 further includes a material guiding member 316, and the material guiding member 316 is sandwiched between the two extruders 311. Further, the material guiding component 316 is wedge-shaped, and the corners of the material guiding component 316 are arranged by chamfering.

Preferably, the material guiding member 316 is provided with material conveying guides 317 on both sides for fixing the conveying direction of the consumable 302, and the consumable 302 is connected to the extruder 311 on the same side through the material conveying guides 317 on one side. Further, the feeding guide 317 has a feeding direction in the same direction as the discharging direction of the extruder 311. Further, the feeding guide 317 has a feeding direction aligned with the discharging direction of the extruder 311. Further, the material conveying guide 317 adopts a conveying pipe, and the consumable 302 is arranged in the conveying pipe in a penetrating way. Specifically, in the present embodiment, a multi-stage duct is provided. Furthermore, a material guide portion (not numbered) is correspondingly disposed on the heat dissipation block 312 for guiding the consumables 302 outputted from the extruder 311 to the nozzle 313, and the consumables 302 are positioned on the same straight line from the delivery tube to the extruder 311 and from the extruder 311 to the material guide portion, wherein the straight line, i.e. the feeding direction of the extruder 311, and the discharging direction of the nozzle 313 (generally, the vertical line direction perpendicular to the printing plane) form a predetermined angle.

Further, a leveling probe 316 for leveling the printing platform is further disposed on one side of the heating block 314.

As shown in fig. 4, the invention provides a heating block 314 of a 3D printer, which includes a heating block 314 body, the heating block 314 body is provided with two mounting holes 3141 for mounting on a nozzle 313 and heating holes 3142 for mounting a heating rod, the two heating holes 3142 are arranged symmetrically, one side of the heating hole 3142 is provided with a fastening opening 3143 for locking the heating rod, and the fastening opening 3143 is reduced by a bolt to clamp the heating rod in the heating hole 3142 so as to keep fixed. When the heating device works, the two heating holes 3142 are both provided with heating rods. Further, the heating power of the heating rod installed in the heating hole 3142 does not exceed 45 w. Specifically, the heating power of the heating rods installed in the heating holes 3142 is 40w, and the power of the heating rods used in the two heating holes 3142 is the same. The printing speed can be remarkably increased under the condition of ensuring the printing quality, the existing heating block 314 adopts one heating rod for heating, in the embodiment, the printing speed of heating by a single heating rod (with the power of 50w) is only about 60mm/s, if the power of the heating rod or the printing speed is forcibly increased, the printed model is loose in structure, low in strength and poor in printing quality, and after the heating block 314 is adopted, the printing speed can be increased to 80-100 mm/s on the premise of ensuring the printing quality, and the printing efficiency is remarkably improved.

Further, referring to fig. 2, fig. 5 and fig. 6, the heat dissipating component 320 includes a heat dissipating housing 321, the heat dissipating housing 321 is covered on the nozzle 313, the heat dissipating block 312 is also covered inside, a first fan 322 for guiding the heat of the nozzle 313 out of the heat dissipating housing 321 is disposed on the front surface of the heat dissipating housing 321, a second fan 323 and a third fan 324 for blowing air to the lower side of the nozzle 313 are disposed on two sides of the heat dissipating housing 321 where the first fan 322 quickly guides the heat of the heat dissipating block 312 out of the heat dissipating housing 321, and a discharging opening 325 is disposed at the bottom of the heat dissipating housing 321.

Further, air guide channels 326 for blowing and guiding the second fan 323 and the third fan 324 are disposed on two sides of the heat dissipation case 321. Furthermore, the air guide channel 326 is obliquely arranged, and the air outlet direction of the air guide channel 326 points to the position right below the nozzle 313 of the 3D printer head. Further, the upper portion of the air guiding channel 326 adopts a straight channel, and the air outlet section at the lower portion of the air guiding channel 326 adopts an arc-shaped turning channel. Further, the inner space of the air guide passage 326 is formed to be narrow from top to bottom. Further, the second fan 323 and the third fan 324 are turbine fans, and are respectively disposed at the top ends of the air guiding channels 326 at both sides. Further, the second fan 323 and the third fan 324 are symmetrically disposed. Further, the second fan 323 and the third fan 324 are disposed obliquely together with the air guide passage 326.

Further, the front surface of the heat dissipation housing 321 has a heat dissipation protrusion 327, and a ventilation portion 328 is disposed on a side surface of the heat dissipation protrusion 327. Specifically, ventilation portions 328 are symmetrically arranged on two sides of the heat dissipation convex portion 327, and the ventilation portions 328 are air inlets arranged at a plurality of intervals, so that air inside and outside the heat dissipation shell 321 can circulate conveniently.

The heat dissipation component 320 can stably and continuously dissipate heat of the printing nozzle 301, so that the temperature of the printing nozzle 301 is maintained at a proper level in a working state, and meanwhile, the material extruded from the nozzle 313 is cooled from two sides through the second fan 323 and the third fan 324, so that the material at the printing stack position is quickly formed, the printing strength is improved, and the printing quality is improved.

Preferably, in the 3D printing front end of the present invention, the printing nozzle 301 is provided with a lifting component 330 for driving the printing nozzle 301 to change in position in the Z-axis direction, the lifting component 330 separates the wire feeding paths of the two consumables 302 of the 3D printer, the top end of the lifting component 330 is higher than the top end of the printing nozzle 301 during operation, the rear side of the printing nozzle 301 is provided with a wire collecting box 340, a first tow chain 341 for routing is provided between the lifting component 330 and the wire collecting box 340, and an external wire tube is connected to the printing nozzle 301 through the routing of the wire collecting box 340.

Further, the lifting member 330 includes a lifting motor 331 and a lifting screw 332 driven by the lifting motor 331, the print head 301 is mounted on the lifting screw 332, and when the lifting motor 331 drives the lifting screw 332 to rotate, the print head 301 moves up and down along the lifting screw 332. Further, the lifting motor 331 is disposed on the top of the lifting screw 332.

Further, the lifting member 330 further includes a lifting housing 333 in which a lifting motor 331 and a lifting screw 332 are installed. Further, a heat dissipation window (not numbered in the figure) is disposed on the lifting housing 333. Further, the first drag chain 341 is disposed at the rear side of the lifting housing 333, and one end thereof is connected to the top of the lifting housing 333. Further, the other end of the first drag chain 341 is connected to the top end of the aggregation box 340.

Further, the 3D printing front end further includes a wire harness housing 344, and the wire harness housing 344 is mounted on the printing nozzle 301 and is in butt joint with the wire collecting box 340. Further, a second drag chain 342 is arranged on one side of the line concentration box 340, and the external pipeline is routed into the line concentration box 340 through the second drag chain 342.

Further, a wire collecting box 343 is disposed between the second tow chain 342 and the wire collecting box 340, one side of the wire collecting box 343 close to the second tow chain 342 is in an open state, and a front end of the wire collecting box 343 is butted and routed with the wire harness housing 344. The line collecting box 343 in this embodiment is used for branching a pipeline from the second drag chain 342 to directly connect with the glue pouring nozzle 303.

The 3D printing front end can avoid the influence of a circuit on the normal operation of the printing spray head 301, and is beneficial to the maintenance and management of a worker on the circuit, and the consumables 302 with two colors are connected with the printing spray head 301 from the rear of the printing front end, the 3D printing front end integrates an upgrading part with the printing spray head 301, and simultaneously separates the two consumables 302 by the lifting part 330 (the printing spray head 301 can move back and forth in a printing plane when the printer works), so that the stability of feeding is favorably ensured, the consumables 302 (a connecting section between the consumables 301 and the printing spray head 301) are prevented from knotting after multiple times of printing, the two consumables 302 are easily wound together, the smoothness of feeding is favorably ensured, and the continuous and stable operation of printing is favorably realized.

To sum up, can realize double-colored printing, guarantee moreover under the qualified circumstances of printing quality, can promote the printing efficiency of 3D printer.

It should be understood that equivalents and modifications of the technical solution and inventive concept thereof may occur to those skilled in the art, and all such modifications and alterations should fall within the scope of the appended claims.

Claims

1. The utility model provides a heating block of 3D printer, its characterized in that, is including being used for installing the mounting hole on the nozzle and being used for installing the heating rod's heated hole, the heated hole is two, and two heated hole distances the position of mounting hole equals, and the during operation, the heating rod has all been installed in two heated holes.

2. A heating block of a 3D printer according to claim 1, wherein the heating power of the heating rod installed in the heating hole is not more than 45 w.

3. A heating block of a 3D printer according to claim 2, wherein the heating rod installed in the heating hole has a heating power of 40 w.

4. The utility model provides a 3D of 3D printer prints front end, is including printing the shower nozzle, its characterized in that, it includes double-colored discharge mechanism and the heat dissipation part that can use the consumptive material of two kinds of colours to print the shower nozzle, the heat dissipation part install in on the double-colored discharge mechanism.

5. The 3D printing front end according to claim 1, characterized in that a glue filling nozzle for filling liquid glue is further arranged on the printing nozzle.

6. The 3D printing front end according to claim 4, wherein the dual-color discharging mechanism comprises an extruder, a heat dissipation block, a nozzle and a heating block, the extruder is located above the nozzle, the heat dissipation block is arranged on the upper portion of the nozzle, the heating block is arranged on the nozzle and close to the discharging end of the nozzle, the extruders are in a pair, a preset angle is formed between the feeding direction of the extruders and the discharging direction of the nozzle, two consumables are respectively fed to the nozzle through the two extruders at the preset angle, in operation, one extruder drives one consumable to walk into the nozzle, and under the heating effect of the heating block, the consumables at the discharging end of the nozzle are melted and extruded.

7. The 3D printing front end according to claim 6, characterized in that the heating block is a heating block of a 3D printer according to any one of claims 1-3.

8. The 3D printing front end according to claim 6, characterized in that one side of the heating block is further provided with a leveling probe for leveling of the printing platform.

9. The 3D printing front end according to claim 6, wherein the heat dissipation component comprises a heat dissipation housing, the heat dissipation housing covers the nozzle, a first fan for guiding heat of the nozzle out of the heat dissipation housing is arranged on the front surface of the heat dissipation housing, a second fan and a third fan for blowing air below the nozzle are respectively arranged on two sides of the heat dissipation housing, and a discharge opening is arranged at the bottom of the heat dissipation housing.

10. The 3D printing front end according to claim 4, wherein a lifting component for driving the printing nozzle to change position in a Z-axis direction is arranged on the printing nozzle, the lifting component separates wire feeding paths of two consumables of the 3D printer, the top end of the lifting component is higher than the top end of the printing nozzle during operation, a wire collecting box is arranged on the rear side of the printing nozzle, a first drag chain for wiring is arranged between the lifting component and the wire collecting box, and an external wire pipe is connected with the printing nozzle through wiring of the wire collecting box.