CN214448537U

CN214448537U - Polar coordinates 3D printer

Info

Publication number: CN214448537U
Application number: CN202022666409.0U
Authority: CN
Inventors: 龙小江; 汤美莲; 龚会军; 黄伟荣
Original assignee: Shenzhen Pulunte Technology Co ltd
Current assignee: Shenzhen Pulunte Technology Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-10-22
Anticipated expiration: 2030-11-17

Abstract

The utility model provides a polar coordinates 3D printer, including the base subassembly, still including locating the third drive arrangement of 360 degrees rotations on the base subassembly, locate the first drive arrangement that the drive second drive arrangement on the base subassembly goes up and down, second drive arrangement drive printing shower nozzle subassembly horizontal migration. The utility model provides a polar coordinate 3D printer, its printing nozzle subassembly all adopts the hold-in range to cooperate the guide bar transmission in X, Z axle directions, and is more steady and simple structure than the tradition adopts screw drive in Z axle direction; the printing platform capable of rotating 360 degrees is utilized, the polar coordinate Y axis replaces the traditional rectangular coordinate Y axis, and when a product with a revolving body structure is printed, the printing precision of the circular contour motion track can be high; meanwhile, the driving device in the X, Z axial direction is matched with the Y-axis polar coordinate driving device of the printing platform and the feeding and discharging driving device of the printing nozzle assembly, so that the volume of the 3D printer is reduced, a thick and heavy shell is not needed, and the occupied space of a site is saved.

Description

Polar coordinates 3D printer

Technical Field

The utility model relates to a quick shaping makes technical field, and more specifically says, relates to a polar coordinates 3D printer.

Background

At present, 3D printer on the market, it prints the shower nozzle subassembly and all is the drive arrangement who adopts traditional longitudinal and transverse structure on X, Y, Z axle three directions, drives the drive mechanism drive in the three direction through three motor and prints the shower nozzle subassembly and translate in X, Y, Z three directions to the realization covers the purpose of 3D printer's the space coordinate that predetermines with the printing route of printing the shower nozzle. The traditional 3D printer drives the printing nozzle to translate in the direction through lead screw transmission in all three directions of the X, Y, Z axis, but lead screw transmission, particularly transmission in the Z axis direction, has the defects of poor stability and relatively complex mechanism; in addition, such a traditional three-axis linkage 3D printer needs to provide a relatively thick and heavy housing, which occupies a large space; when a product with a revolving body structure is printed, the traditional three-axis linkage 3D printer drives the printing nozzle assembly to perform mutual linear interpolation motion in two directions of the X, Y axis by the aid of the transmission mechanisms in the X, Y directions, and approaches the circular outline motion track of a target product by the stepped motion track.

Therefore, the traditional three-axis linkage 3D printer occupies a large space and has a low printing precision when printing a product with a revolving body structure, which is a technical problem to be solved urgently in the field.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the 3D printer of current traditional triaxial linkage and occupy the technical problem that the place volume space is great and print the low precision when printing the product that has revolution solid structure, provide a polar coordinates 3D printer.

For solving the technical problem, the utility model discloses a technical scheme be: the utility model provides a polar coordinates 3D printer, includes the base subassembly, still including locating the third drive arrangement that can 360 degrees rotations on the base subassembly, locate the first drive arrangement that the drive second drive arrangement on the base subassembly goes up and down, second drive arrangement drive print nozzle subassembly horizontal migration.

Furthermore, the third driving device comprises a third driving motor arranged on the base component and a third transmission mechanism connected with the third driving motor and driving the printing platform to rotate.

Further, the third transmission mechanism includes: and the transmission shaft is connected with an output shaft of the third driving motor, and one end of the driven shaft is connected to the printing platform.

Furthermore, the first driving device comprises a first driving motor arranged on the base assembly and a first transmission mechanism connected with the first driving motor and driving the second driving device to lift.

Further, the first transmission mechanism includes: the first driving wheel is connected with an output shaft of the first driving motor, the first guide rod extends upwards from the mounting seat of the first driving motor and penetrates through the lifting assembly of the second driving device, a first driven wheel is arranged at one end, far away from the mounting seat, of the first guide rod, the first synchronous belt penetrates through the lifting assembly and is correspondingly meshed with the first driving wheel and the first driven wheel, and the first driving wheel drives the first synchronous belt to drive the lifting assembly to lift along the first guide rod.

Further, the second driving device includes: the second driving motor is arranged in the lifting assembly, and the second transmission mechanism is connected with the second driving motor and drives the printing nozzle assembly to move.

Further, the second transmission mechanism includes: the second driving wheel is connected with the output shaft of the second driving motor, the second guide rod extends to the horizontal direction from the lifting assembly and penetrates through the printing nozzle assembly, the second driven wheel is arranged at one end, far away from the printing nozzle assembly, of the second guide rod, the second synchronous belt penetrates through the printing nozzle assembly and is correspondingly meshed with the second driving wheel and the second driven wheel, and the second driving motor drives the second synchronous belt to drive the printing nozzle assembly to move along the second guide rod.

Further, the printing system also comprises a fourth driving device for driving the printing consumables to enter or exit the printing nozzle assembly.

Further, the fourth driving device includes: and the fourth driving motor is arranged in the printing nozzle assembly, and the fourth transmission mechanism is connected with the fourth driving motor and drives the printing consumables to enter or exit the printing nozzle assembly.

Further, the fourth transmission mechanism includes: and the fourth driving motor drives the fourth transmission mechanism to send the printing consumables into the feed inlet of the printing nozzle assembly from the rotating shaft mechanism or return the printing consumables to the rotating shaft mechanism from the printing nozzle assembly through the feed inlet.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model provides a polar coordinates 3D printer, its printing nozzle subassembly all adopts synchronous belt drive mode to realize printing nozzle subassembly translation in this direction in X, Z axle directions, adopts screw drive in Z axle direction than traditional 3D printer, and the drive mode transmission of synchronous belt cooperation guide bar is more steady, and the structure is relatively simple; the driving device in the direction of the X, Z shaft is modularly arranged, and a module comprises a motor driving mechanism, a synchronous belt and a guide rod transmission mechanism, so that the assembly is more convenient, and the transmission stability is further improved; the printing platform capable of horizontally rotating by 360 degrees is utilized, namely, the printing platform performs fixed-axis rotation along the Z-axis direction of the 3D printer, the polar coordinate Y axis replaces the traditional rectangular coordinate Y axis, when a product with a revolving body structure is printed, the real circular contour motion track printing can be realized, and the printing precision is high; meanwhile, the driving device in the X, Z axial direction is matched with the Y-axis polar coordinate driving device of the printing platform and the feeding and returning driving device of the printing nozzle assembly, so that the whole volume of the whole 3D printer is reduced, a thick and heavy shell is not required to be provided, and the space occupying the site is saved.

Drawings

Fig. 1 is an overall assembly schematic diagram of an embodiment of a polar coordinate 3D printer provided by the present invention;

fig. 2 is a schematic view of a partial assembly of an embodiment of a polar 3D printer according to the present invention;

fig. 3 is an explosion structure diagram of an embodiment of the polar coordinate 3D printer provided by the present invention.

Fig. 4 is a schematic view of the structure and movement of the first driving device of the polar coordinate 3D printer according to the embodiment of the present invention;

fig. 5 is a schematic view of the structure and movement of a second driving device of the polar coordinate 3D printer according to the present invention;

fig. 6 is a schematic view of the structure and movement of a third driving device of the polar coordinate 3D printer according to the embodiment of the present invention;

fig. 7 is the structure and the motion diagram of the printing head assembly of the embodiment of the polar coordinate 3D printer provided by the present invention.

Wherein, in the drawings, the reference numerals are mainly as follows:

1-a base assembly; 11-a base housing; 12-feeding key; 13-start button; 14-material returning key; 2-a third drive; 21-a printing platform; 22-a third drive motor; 3-a first drive; 31-a mounting seat; 32-a first drive motor; 33-a first capstan; 34-a first guide bar; 35-a first driven wheel; 36-a first synchronization belt; 37-a first connection mount; 4-a second drive; 41-a lifting assembly; 42-a second drive motor; 43-print head assembly; 44-a second capstan; 45-a second driven wheel; 46-a second guide bar; 47-a second synchronous belt; 48-a second connection seat; 5-a fourth drive; 51-a spindle mechanism; 511 a rotating shaft bracket; 512-printing supplies; 513-a rotating shaft end plate; 52-a fourth drive motor; 53-feed inlet; 54-a discharge hole; 55 printing the spray head; 6-line pipe.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings 1 to 7 and the embodiments.

Referring to fig. 1-7, the present invention provides a polar 3D printer, which includes a base assembly 1, wherein the base assembly 1 includes an internal component and an external base housing 11. The printer further comprises a first driving device 3 arranged on the base shell 11 of the base assembly 1 and used for driving the second driving device 4 to ascend and descend, wherein the first driving device 3 comprises a first driving motor 32 arranged in a mounting seat 31 on the base shell 11, and a first transmission mechanism connected with the first driving motor 32 and used for driving the second driving device 4 to ascend and descend (namely, driving the second driving device 4 to translate along the Z-axis direction of the 3D printer).

As a preferred embodiment, the first transmission mechanism includes: a first driving wheel 33 connected to an output shaft of the first driving motor 32, the output shaft of the first driving motor 32 being disposed along a Z-axis direction of the 3D printer, and a first guide bar 34 extending upward from the mounting seat 31 of the first driving motor 32 and passing through the lifting assembly 41 of the second driving device 4; one end of the first guide rod 34, which is far away from the mounting seat 31, is fixedly connected to a first connecting seat 37, the first connecting seat 37 is provided with a first driven wheel 35, a first synchronous belt 36 is sleeved and connected between the first driving wheel 33 and the first driven wheel 35 and correspondingly meshed with the first driving wheel 33 and the first driven wheel 35, a lifting assembly 41 of the second driving device 4 is further arranged between the first driving wheel 33 and the first driven wheel 35, and the first driving wheel 33 drives the first synchronous belt 36 to drive the lifting assembly 41 to lift along the first guide rod 34; the specific connections of the first synchronous belt 36, the first driving wheel 33, the first driven wheel 35 and the lifting assembly 41 are as follows: the first synchronous belt 36 passes around the first driving wheel 33 and extends towards the first driven wheel 35, penetrates into one channel from one end of the lifting assembly 41 facing the first driving wheel 33, penetrates out from one end of the lifting assembly 41 facing the first driven wheel 35, passes around the first driven wheel 35 and extends towards the first driving wheel 33, penetrates into another channel from one end of the lifting assembly 41 facing the first driven wheel 35, penetrates out from one end of the lifting assembly 41 facing the first driving wheel 33 again, and finally returns to the first driving wheel 33 to complete a transmission cycle; the first synchronous belt 36 is fixedly connected with the lifting assembly 41 in one passage passing through the lifting assembly 41, and the first synchronous belt 36 can freely move in the other passage passing through the lifting assembly 41, so that when the first driving wheel 33 drives the first synchronous belt 36 to circularly rotate around the first driven wheel 35 and the first driving wheel 33, the first synchronous belt 36 drives the lifting assembly 41 to synchronously move with the first driving wheel by being fixed with the lifting assembly 41 in one passage passing through the lifting assembly 41, and simultaneously the first synchronous belt 36 can freely pass through the other passage of the lifting assembly 41 to complete the circular transmission between the first driving wheel 33 and the first driven wheel 35.

The second driving device 4 is used for driving the print head assembly 43 to move horizontally, and comprises: a second driving motor 42 disposed in the lifting assembly 41, and a second transmission mechanism connected to the second driving motor 42 and driving the print head assembly 43 to move (i.e., driving the print head assembly 43 to translate along the X-axis direction of the 3D printer).

As a preferred embodiment, the second transmission mechanism includes: a second driving wheel 44 connected to an output shaft of the second driving motor 42, the output shaft of the second driving motor 42 being disposed along the X-axis direction of the 3D printer, extending horizontally outward from the elevating assembly 41 and passing through a second guide bar 46 of the elevating assembly 41 of the print head assembly 43; one end of the second guide rod 46, which is far away from the lifting assembly 41, is fixedly connected to a second connecting seat 48, the second connecting seat 48 is provided with a second driven wheel 45, a second synchronous belt 47 is sleeved and connected between the second driving wheel 44 and the second driven wheel 45 and correspondingly meshed with the second driving wheel 44 and the second driven wheel 45, a printing nozzle assembly 43 is further arranged between the second driving wheel 44 and the second driven wheel 45, and the second driving wheel 44 drives the second synchronous belt 47 to drive the printing nozzle assembly 43 to horizontally move along the second guide rod 46; the specific connections of the second timing belt 47, the second driving pulley 44, the second driven pulley 45 and the lifting assembly 41 are as follows: the second timing belt 47 extends around the second driving wheel 44 and in the direction of the second driven wheel 45, penetrates into one channel from the end of the print head assembly 43 facing the second driving wheel 44, penetrates out from the end of the print head assembly 43 facing the second driven wheel 45, then extends around the second driven wheel 45 and in the direction of the second driving wheel 44, penetrates into another channel from the end of the print head assembly 43 facing the second driven wheel 45, penetrates out from the end of the print head assembly 43 facing the second driving wheel 44 again, and finally returns to the second driving wheel 44 to complete the transmission cycle; the second timing belt 47 is fixedly connected to the print head assembly 43 in one of the passages through the print head assembly 43, and the second timing belt 47 is freely movable in the other passage through the print head assembly 43, so that when the second driving pulley 44 drives the second timing belt 47 to circularly rotate around the second driven pulley 45 and the second driving pulley 44, the second timing belt 47 drives the print head assembly 43 to synchronously move with it by being fixed to the print head assembly 43 in the one passage through the print head assembly 43, and simultaneously the second timing belt 47 is freely movable through the other passage through the print head assembly 43 to complete the circular transmission between the second driving pulley 44 and the second driven pulley 45.

In a preferred embodiment, the first driving pulley 33, the first driven pulley 35, the second driving pulley 44, and the second driven pulley 45 are all gears, and the first timing belt 36 and the second timing belt 47 are all rack timing belts.

The printing device comprises a base assembly 1, a third driving device 2 and a third transmission mechanism, wherein the third driving device 2 is arranged on the base and can rotate 360 degrees, the third driving device 2 comprises a third driving motor 22 arranged on a base shell 11 of the base assembly 1, and the third transmission mechanism is connected with the third driving motor 22 and drives a printing platform 21 to rotate (namely, the printing platform 21 is driven to rotate along the Z-axis direction of the 3D printer in a fixed axis mode, namely, a polar coordinate Y axis replaces a rectangular coordinate Y axis).

As a preferred embodiment, the third transmission mechanism includes: and a transmission shaft (not shown) connected to an output shaft of the third driving motor 22, and having one end connected to the printing platform 21. In a preferred embodiment, the printing apparatus further includes a ball bearing disposed on the base housing 11, the printing platform 21 is disposed on the ball bearing through a transmission shaft, and the transmission shaft drives the printing platform 21 to make fixed-axis rotation around the ball bearing under the driving of the third driving motor 22.

A fourth driving device 5 for driving the printing consumables 512 to enter or exit the print head assembly 43 is also included. The printing supplies 512 are preferably wires made of plastic, pigment, or the like that are melted by heat. The fourth drive device 5 includes: a fourth driving motor 52 disposed in the print head assembly 43, and a fourth transmission mechanism (not shown) connected to the fourth driving motor 52 for driving the printing consumables 512 to enter or exit the print head assembly 43.

As a preferred embodiment, the fourth transmission mechanism includes: a rotating shaft mechanism 51 provided on the base housing 11, the rotating shaft mechanism 51 comprising: locate a pair of pivot support 511 on base casing 11, this pair of pivot support 511's relative inboard corresponds and is equipped with a pair of circular pivot end plate 513, a pivot (not shown in the figure) passes a pair of circular pivot end plate 513 and rotationally connects between a pair of pivot support 511, the printing consumables 512 twines in the pivot, can realize accomodating printing consumables 512 in the pivot when the pivot is rotatory to one direction, then can realize emitting printing consumables 512 from the pivot when rotatory to another direction.

In a preferred embodiment, the rotating shaft mechanism 51 further includes a consumable tightening handle (not shown), the print head assembly 43 includes a heating device disposed at the print head 55 of the print head assembly 43, the base assembly 1 further includes a central control main board disposed in the base housing 11, a feeding key 12 disposed on the surface of the base housing 11 and electrically connected to the central control main board, a start key 13, a material return key 14, a power supply interface, a USB interface, a TF interface, and other functional keys and interfaces, the fourth driving motor 52 and the heating device in the print head assembly 43 pass through the conduit 6, the first driving motor 32, the second driving motor 42, and the third driving motor 22 converge into the conduit 6 through wires, and finally the conduit 6 passes through the base housing 11 and is electrically connected to the central control main board.

When printing and feeding, the fourth driving motor 52 arranged in the printing nozzle assembly 43 drives the printing consumables 512 to be discharged from the rotating shaft and to be fed into the feed port 53 of the printing nozzle assembly 43, the consumables tightness handle of the rotating shaft mechanism 51 is manually pressed to introduce the printing consumables 512 into the feed port 53 and feed the printing consumables forward until the printing consumables 512 are fed into the printing nozzle 55, the start button 13 is clicked, and the printing consumables 512 near the printing nozzle 55 are heated and melted by the heating device arranged at the position, then, when the feeding button 12 is clicked, the fourth driving motor 52 will rotate in one direction and drive the fourth transmission mechanism to continue feeding forward, since the fourth driving motor 52 drives the fourth transmission mechanism to push the following printing consumables 512 in all the time, thereby realizing that the heated and melted material at the printing nozzle 55 is extruded from the discharge port 54 of the printing nozzle 55, and achieving the purpose of continuous feeding.

When the material returning button 14 is clicked during printing, the fourth driving motor 52 rotates in the other direction and drives the fourth transmission mechanism to return the material, so that the printing consumables 512 are returned from the printing nozzle assembly 43 through the feed port 53 and are stored in the rotating shaft.

In a preferred embodiment, the first drive motor 32, the second drive motor 42, the third drive motor 22, and the fourth drive motor 52 are all stepper motors. As shown in fig. 4, when the first driving motor 32 rotates clockwise (rotates forward), the first synchronous belt 36 is driven to drive the lifting assembly 41 to lift upward; when the first driving motor 32 rotates counterclockwise (reverses), the first timing belt 36 is driven to bring the lifting assembly 41 down. Since the passage where the lifting component 41 and the first synchronous belt 36 are fixed can be on any side, when the first driving motor 32 rotates clockwise (rotates forward), the first synchronous belt 36 is driven to drive the lifting component 41 to fall downwards; when the first driving motor 32 rotates counterclockwise (reverses), the first timing belt 36 is driven to bring the lifting assembly 41 to be lifted upward. As shown in fig. 5, based on the same principle as the first driving device 3 of fig. 4, when the second driving motor 42 rotates forward and backward, the second timing belt 47 is driven to drive the print head assembly 43 to move horizontally leftward or rightward.

As shown in fig. 6, when the third driving motor 22 rotates clockwise, the driving transmission shaft rotates clockwise together, so as to drive the printing platform 21 to rotate clockwise; when the third driving motor 22 rotates counterclockwise, the driving transmission shaft rotates counterclockwise together, so as to drive the printing platform 21 to rotate counterclockwise synchronously.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides a polar coordinates 3D printer, includes the base subassembly, its characterized in that still including locating but 360 degrees rotatory third drive arrangement on the base subassembly locates the first drive arrangement that the drive second drive arrangement on the base subassembly goes up and down, second drive arrangement drive prints shower nozzle subassembly horizontal migration.

2. The polar 3D printer according to claim 1, wherein the third driving mechanism comprises a third driving motor disposed on the base assembly, and a third transmission mechanism coupled to the third driving motor and configured to drive a printing platform to rotate.

3. The polar 3D printer according to claim 2, wherein the third transmission mechanism comprises: and the transmission shaft is connected with the output shaft of the third driving motor, and one end of the driven shaft is connected to the printing platform.

4. The polar 3D printer according to claim 1, wherein the first driving device comprises a first driving motor disposed on the base assembly, and a first transmission mechanism connected to the first driving motor and driving the second driving device to move up and down.

5. The polar 3D printer according to claim 4, wherein the first mechanism comprises: the first driving wheel is connected with an output shaft of the first driving motor, the first guide rod extends upwards from the mounting seat of the first driving motor and penetrates through the lifting assembly of the second driving device, a first driven wheel is arranged at one end, far away from the mounting seat, of the first guide rod, a first synchronous belt penetrates through the lifting assembly and is correspondingly meshed with the first driving wheel and the first driven wheel, and the first driving wheel drives the first synchronous belt to drive the lifting assembly to lift along the first guide rod.

6. The polar 3D printer according to claim 5, wherein the second driving means comprises: the second driving motor is arranged in the lifting assembly, and the second transmission mechanism is connected with the second driving motor and drives the printing nozzle assembly to move.

7. The polar 3D printer according to claim 6, wherein the second transmission mechanism comprises: the second driving wheel is connected with an output shaft of a second driving motor, the lifting assembly extends to the horizontal direction and penetrates through a second guide rod of the printing nozzle assembly, a second driven wheel is arranged at one end, far away from the printing nozzle assembly, of the second guide rod, a second synchronous belt penetrates through the printing nozzle assembly and is correspondingly meshed with the second driving wheel and the second driven wheel, and the second driving motor drives the second synchronous belt to drive the printing nozzle assembly to move along the second guide rod.

8. The polar 3D printer according to any one of claims 1-7, further comprising a fourth drive to drive printing consumables into or out of the print head assembly.

9. The polar 3D printer according to claim 8, wherein the fourth drive means comprises: the fourth driving motor is arranged in the printing nozzle assembly, and the fourth transmission mechanism is connected with the fourth driving motor and drives the printing consumables to enter or exit the printing nozzle assembly.

10. The polar 3D printer according to claim 9, wherein the fourth transmission mechanism comprises: locate pivot mechanism on the base subassembly, fourth drive motor drive fourth drive mechanism will the printing consumables is followed pivot mechanism sends into the feed inlet of print nozzle subassembly, perhaps will the printing consumables is followed in the print nozzle subassembly the feed inlet is withdrawn pivot mechanism.