CN211138143U

CN211138143U - Automatic liquid level adjusting mechanism for 3D printer

Info

Publication number: CN211138143U
Application number: CN201922167090.4U
Authority: CN
Inventors: 王妮; 张耀荣
Original assignee: Hengtong Xijiao Intelligent Machine Guangdong Co Ltd
Current assignee: Hengtong Xijiao Intelligent Machine Guangdong Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-07-31
Anticipated expiration: 2029-12-05

Abstract

The utility model belongs to the technical field of the technique of 3D printer and specifically relates to a liquid level automatic regulating mechanism for 3D printer is related to. The automatic liquid level adjusting mechanism for the 3D printer comprises a resin box, a screen plate, a workbench, a lifting assembly, a liquid level adjusting block and a liquid level detection sensor, wherein the resin box is used for containing photosensitive resin liquid, the screen plate is used for containing a workpiece, the resin box is provided with an opening, the workbench is arranged above the opening of the resin box, the liquid level detection sensor and the screen plate are arranged on the workbench, and the liquid level detection sensor is used for detecting the liquid level height of the resin box; the liquid level regulating block is arranged above the opening of the resin box in a lifting mode, and the lifting assembly is used for driving the liquid level regulating block to lift. The utility model discloses has following effect: 1. the liquid level automatic regulating mechanism can keep the liquid level height of the photosensitive resin liquid in the resin tank unchanged in the photocuring process, so that the processing precision is ensured; 2. the detection value of the liquid level detection sensor is more accurate.

Description

Automatic liquid level adjusting mechanism for 3D printer

Technical Field

The utility model belongs to the technical field of the technique of 3D printer and specifically relates to a liquid level automatic regulating mechanism for 3D printer is related to.

Background

At present, 3D printing (3 DP), which is one of the rapid prototyping technologies, is also called additive manufacturing, which is a technology for constructing an object by using an adhesive material such as powdered metal or plastic and the like and printing layer by layer on the basis of a digital model file. 3D prints and adopts the 3D printer to realize usually, and current comparatively common 3D printer is photocuring 3D printer.

The existing photocuring 3D printer is a device for curing photosensitive resin liquid by utilizing light with certain wavelength, the device usually comprises a shell, a resin box, a curing light source and a screen plate are arranged in the shell, the resin box is a container for containing the photosensitive resin liquid, the screen plate is used for containing a workpiece, in the 3D printing process, the curing light source performs photocuring on one layer of resin liquid above the screen plate, after the layer is cured, the screen plate moves by one layer thickness, and the photosensitive resin liquid is in a flowing state before being cured, so the photosensitive resin liquid in the resin box can flow to the covering screen plate again, then the curing light source performs photocuring on the next layer of photosensitive resin liquid, and the workpiece is printed and molded after each layer of resin liquid is cured.

The above prior art solutions have the following drawbacks: the volume of the photosensitive resin liquid is reduced after curing, so that the liquid level in the resin tank is reduced, and the thickness of the photosensitive resin liquid on the uppermost layer does not reach the thickness of one layer when the screen plate moves by one layer, thereby influencing the processing precision.

Disclosure of Invention

The utility model aims at providing a liquid level automatically regulated mechanism for 3D printer, the technical problem that solve is: how to keep the liquid level of the photosensitive resin liquid in the resin box unchanged in the photocuring process so as to ensure the processing precision.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model discloses a liquid level automatic regulating mechanism for 3D printer, including resin box, otter board, workstation, lifting unit, liquid level regulating block and liquid level detection sensor, the resin box is used for holding photosensitive resin liquid, and the otter board is used for holding the work piece, and the resin box has the opening, and the workstation setting is above the opening of resin box, and liquid level detection sensor and otter board setting are on the workstation, and liquid level detection sensor is used for detecting the liquid level of resin box; the liquid level regulating block is arranged above the opening of the resin box in a lifting mode, and the lifting assembly is used for driving the liquid level regulating block to lift.

By adopting the technical scheme, the liquid level detection sensor can detect the liquid level height of the resin box, when the liquid level height in the resin box is detected to be reduced, the lifting assembly operates, so that the liquid level adjusting block is reduced into the resin box, the liquid level height in the resin box can be raised under the action of the liquid level adjusting block due to the fact that the liquid level adjusting block has a certain volume, and when the liquid level detection sensor detects that the liquid level height reaches the initial height, the lifting assembly stops operating, so that the liquid level adjusting block does not move any more, and the liquid level is kept at the initial height; when the liquid level in the resin box is detected to be too high, the lifting assembly drives the liquid level adjusting block to rise, so that the volume of the liquid level adjusting block inserted into the liquid level in the resin box is reduced, when the liquid level detection sensor detects that the liquid level reaches the initial height, the lifting assembly stops running, the liquid level adjusting block does not move any more, and therefore the liquid level automatic adjusting mechanism can enable the liquid level of photosensitive resin liquid in the resin box to be kept unchanged in the photocuring process, and the processing precision is guaranteed.

The utility model discloses further set up to: the lifting assembly comprises a screw rod, a driving piece, a limiting piece and a nut seat sleeved on the screw rod, and the screw rod is vertically arranged on the mounting plate; the driving piece is used for driving the screw rod to rotate, and the limiting piece is used for limiting the nut seat so that the nut seat is driven to move along the length direction of the screw rod; the liquid level regulating block is fixedly connected with the nut seat.

Through adopting above-mentioned technical scheme, when driving piece drive lead screw rotated, the nut seat of cover on the lead screw can be followed the length direction motion of lead screw under the effect of locating part, because the lead screw is vertical setting on the mounting panel, nut seat and liquid level regulating block fixed connection simultaneously, so liquid level regulating block can corresponding lift when the nut seat moves to adjust the liquid level height of resin case, so only need the driving piece operation just to enable the liquid level height of resin case and can adjust, operation personnel convenient to use.

The utility model discloses further set up to: the limiting part is a limiting rod, the nut seat is provided with a limiting hole, the limiting rod penetrates through the limiting hole, and two ends of the limiting rod are fixedly connected with the mounting plate.

Through adopting above-mentioned technical scheme, when the lead screw rotates, because the gag lever post has passed the spacing hole on the nut seat, the both ends of gag lever post all with mounting panel fixed connection simultaneously, so the nut seat can't follow the lead screw and rotate together under the effect of gag lever post to the spacing function has been realized to the nut seat to the gag lever post, and the nut seat can be followed the length direction motion of lead screw when the lead screw rotates.

The utility model discloses further set up to: the driving member is a motor.

Through adopting above-mentioned technical scheme, the motor is common drive device, and the technology is mature, and it is comparatively convenient to use and purchase.

The utility model is further provided with a connecting piece, the connecting piece is provided with a first supporting arm and a second supporting arm which are connected in L type, the nut seat is connected with the first supporting arm, and the liquid level regulating block is connected with the second supporting arm.

By adopting the technical scheme, the connecting piece increases the contact area of the nut seat and the liquid level adjusting block, so that the nut seat and the liquid level adjusting block are more stably connected.

The utility model discloses still set up as including the mounting, the mounting has third support arm and the fourth support arm that is L type connection, and the motor sets up on the third support arm, and the fourth support arm is connected with the mounting panel.

Through adopting above-mentioned technical scheme, the mounting has increased the area of being connected of motor and mounting panel to the connection of motor and mounting panel is more firm.

The utility model discloses further set up to: the flange is fixedly connected with the mounting plate; the quantity of flange is two, the one end and a flange rotatable coupling of lead screw, the other end and another flange rotatable coupling of lead screw.

Through adopting above-mentioned technical scheme, the flange makes being connected of lead screw and mounting panel more firm, and the flange also can be spacing to the lead screw simultaneously to the lead screw is difficult for squinting.

The utility model discloses further set up to: the fixing block is fixedly connected with the mounting plate, the number of the fixing blocks is two, one end of the limiting rod is connected with one fixing block, and the other end of the limiting rod is connected with the other fixing block.

Through adopting above-mentioned technical scheme, the fixed block has increased gag lever post and mounting panel area of contact to the gag lever post is more firm with being connected of mounting panel.

The utility model discloses further set up to: still include the metal frame, the metal frame setting is on the resin case, and the metal frame has the intercommunicating pore that is used for communicateing the resin incasement portion, and liquid level detection sensor is used for detecting the liquid level height in the metal frame.

Through adopting above-mentioned technical scheme, when the liquid level is undulant, under the framework effect of metal frame, the difficult undulant of liquid level in the metal frame to liquid level detection sensor's detection numerical value is more accurate.

To sum up, the utility model discloses a beneficial technological effect does:

1. the liquid level automatic regulating mechanism can keep the liquid level height of the photosensitive resin liquid in the resin tank unchanged in the photocuring process, so that the processing precision is ensured;

2. the detection value of the liquid level detection sensor is more accurate.

Drawings

Fig. 1 is a partial schematic structural diagram of a viewing angle of an automatic liquid level adjusting mechanism for a 3D printer according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of another perspective of the automatic liquid level adjustment mechanism for the 3D printer of FIG. 1;

fig. 3 is an enlarged schematic view at a in fig. 2.

In the figure, 1, a resin tank; 2. a screen plate; 3. a work table; 4. a lifting assembly; 21. a screw rod; 22. a drive member; 23. a limiting member; 24. a nut seat; 25. a limiting hole; 5. a liquid level regulating block; 6. a liquid level detection sensor; 7. an opening; 8. mounting a plate; 9. a connecting member; 91. a first support arm; 92. a second support arm; 10. a fixing member; 101. a third support arm; 102. a fourth support arm; 11. a flange; 12. a fixed block; 13. a metal frame; 14. and a communicating hole.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a liquid level automatically regulated mechanism for 3D printer, including resin case 1, otter board 2, workstation 3, lifting unit 4, liquid level regulating block 5 and liquid level detection sensor 6, resin case 1 is used for holding photosensitive resin liquid, and resin case 1 has opening 7. Otter board 2 is used for holding the work piece, and otter board 2 can be square board, and workstation 3 sets up in the opening 7 top of resin case 1, and liquid level detection sensor 6 and otter board 2 set up on workstation 3, and liquid level detection sensor 6 can be bolted connection with the connected mode of workstation 3, and otter board 2 can slide with workstation 3 and be connected. The liquid level detection sensor 6 is used for detecting the liquid level height of the resin tank 1; the liquid level regulating block 5 can be a square block, the liquid level regulating block 5 can be arranged above the opening 7 of the resin box 1 in a lifting mode, and the lifting assembly 4 is used for driving the liquid level regulating block 5 to lift.

Regarding the specific arrangement of the lifting component 4 driving the liquid level adjusting block 5 to lift, as shown in fig. 1, the automatic liquid level adjusting mechanism further includes a mounting plate 8, the mounting plate 8 may be a square plate, since the 3D printer generally has a housing, the mounting plate 8 is configured to be mounted on the housing, and the mounting plate 8 and the housing may be connected by bolts. The lifting assembly 4 comprises a screw rod 21, a driving piece 22, a limiting piece 23 and a nut seat 24 sleeved on the screw rod 21, the screw rod 21 is vertically arranged on the mounting plate 8, the automatic liquid level adjusting mechanism also comprises a flange 11, the flange 11 is fixedly connected with the mounting plate 8, and the fixed connection mode can be bolt connection. The number of the flanges 11 is two, one end of the screw rod 21 is rotatably connected with one flange 11, the other end of the screw rod 21 is rotatably connected with the other flange 11 in an inserting connection mode, and meanwhile the screw rod 21 can rotate along the axis of the screw rod. The driving member 22 is used for driving the screw rod 21 to rotate, the driving member 22 can be a motor, an output shaft of the motor can be connected with the screw rod 21, and the connection mode can be welding, so that the screw rod 21 can correspondingly rotate when the motor rotates. The limiting member 23 is used for limiting the nut seat 24, so that the nut seat 24 is driven to move along the length direction of the screw rod 21. Regarding the specific configuration of the limiting member 23, the limiting member 23 may be a limiting rod, the limiting rod may be a cylindrical rod, the nut seat 24 has a limiting hole 25, the limiting hole 25 may be a circular hole correspondingly, the limiting rod passes through the limiting hole 25, and both ends of the limiting rod are fixedly connected to the mounting plate 8. Regarding the connected mode of gag lever post and mounting panel 8, this liquid level automatic regulating mechanism still can include fixed block 12, and fixed block 12 can be square piece, fixed block 12 and mounting panel 8 fixed connection, and fixed connection can be bolted connection, and the quantity of fixed block 12 is two, and the one end of gag lever post is connected with a fixed block 12, and connected mode can be for pegging graft, and the other end and another fixed block 12 of gag lever post are connected, and connected mode also can be for pegging graft.

Meanwhile, as shown in fig. 1, the liquid level adjusting block 5 is fixedly connected with the nut seat 24, and as for the fixed connection mode of the liquid level adjusting block 5 and the nut seat 24, the automatic liquid level adjusting mechanism may further include a connecting piece 9, the connecting piece 9 has a first supporting arm 91 and a second supporting arm 92 which are connected in L type, the first supporting arm 91 and the second supporting arm 92 may be square blocks, the first supporting arm 91 and the second supporting arm 92 are connected by screws to form the connecting piece 9 in L type, the nut seat 24 is connected with the first supporting arm 91 in screw connection mode, the liquid level adjusting block 5 is connected with the second supporting arm 92 in screw connection mode, so that the liquid level adjusting block 5 is correspondingly lifted when the nut seat 24 moves to adjust the liquid level of the resin tank 1, and the liquid level of the resin tank 1 can be adjusted only by operating the driving piece 22, and the operation of an operator is convenient.

In order to enable the motor to be more stably installed on the mounting plate 8, as shown in fig. 1, the automatic liquid level adjusting mechanism may further include a fixing member 10, the fixing member 10 has a third arm 101 and a fourth arm 102 connected in an L shape, the third arm 101 and the fourth arm 102 may be square blocks, the third arm 101 and the fourth arm 102 are connected to form a L-shaped fixing member 10, and the third arm 101 and the fourth arm 102 may be connected in an integrated manner, meanwhile, the motor is disposed on the third arm 101 and may be connected by a screw, the fourth arm 102 is connected with the mounting plate 8 and may also be connected by a screw, the fixing member 10 increases a connection area between the motor and the mounting plate 8, and thus, the connection between the motor and the mounting plate 8 is more stable.

Finally, as shown in fig. 2 and 3, the automatic liquid level adjusting mechanism may further include a metal frame 13, the metal frame 13 may be disposed on the resin tank 1, the metal frame 13 may be a square frame, the metal frame 13 may be welded to the side wall of the resin tank 1, the metal frame 13 may have a communication hole 14 for communicating the inside of the resin tank 1, the communication hole 14 may be circular, so that the photosensitive resin liquid in the resin tank 1 communicates with the metal frame 13, and the liquid level detecting sensor 6 is used for detecting the liquid level inside the metal frame 13. Therefore, when the liquid level fluctuates, the liquid level inside the metal frame 13 is less likely to fluctuate by the frame body of the metal frame 13, and the detection value of the liquid level detection sensor 6 is more accurate.

The implementation principle of the embodiment is as follows: the liquid level detection sensor 6 can detect the liquid level height in the metal frame 13 communicated with the photosensitive resin liquid in the resin box 1, when the liquid level height in the resin box 1 is detected to be inconsistent with the initial height, the motor operates, so that the screw rod 21 rotates, the nut seat 24 on the screw rod 21 can rotate along the length direction of the screw rod 21 under the action of the limiting rod, the liquid level adjusting block 5 is fixedly connected with the nut seat 24, the liquid level adjusting block 5 can move along with the nut seat 24 when the nut seat 24 moves, the liquid level adjusting block 5 can correspondingly lift because the screw rod 21 is vertically arranged, when the liquid level height in the resin box 1 is detected to fall, the liquid level adjusting block 5 falls into the resin box 1, the liquid level adjusting block 5 has a certain volume, so the liquid level height in the resin box 1 can rise under the action of the liquid level adjusting block 5, when the liquid level detection sensor 6 detects that the liquid level height reaches the initial height, the lifting assembly 4 stops operating so that the liquid level regulating block 5 is no longer moving so that the liquid level is maintained at the initial height; when the liquid level in the resin box 1 is detected to be too high, the lifting component 4 drives the liquid level adjusting block 5 to rise, so that the volume of the liquid level adjusting block 5 inserted into the liquid level in the resin box 1 is reduced, when the liquid level detection sensor 6 detects that the liquid level reaches the initial height, the lifting component 4 stops running, the liquid level adjusting block 5 does not move any more, and therefore the automatic liquid level adjusting mechanism can enable the liquid level of the photosensitive resin liquid in the resin box 1 to be kept unchanged in the light curing process, and the processing precision is guaranteed.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a liquid level automatically regulated mechanism for 3D printer, includes resin case (1) and otter board (2), and resin case (1) is used for holding photosensitive resin liquid, and otter board (2) are used for holding the work piece, its characterized in that: the resin box is characterized by further comprising a workbench (3), a lifting assembly (4), a liquid level adjusting block (5) and a liquid level detection sensor (6), wherein the resin box (1) is provided with an opening (7), the workbench (3) is arranged above the opening (7) of the resin box (1), the liquid level detection sensor (6) and the screen plate (2) are arranged on the workbench (3), and the liquid level detection sensor (6) is used for detecting the liquid level height of the resin box (1);

the liquid level adjusting block (5) is arranged above the opening (7) of the resin box (1) in a lifting mode, and the lifting assembly (4) is used for driving the liquid level adjusting block (5) to lift.

2. The automatic liquid level adjustment mechanism for a 3D printer according to claim 1, characterized in that: the lifting assembly (4) comprises a screw rod (21), a driving piece (22), a limiting piece (23) and a nut seat (24) sleeved on the screw rod (21), and the screw rod (21) is vertically arranged on the mounting plate (8);

the driving piece (22) is used for driving the screw rod (21) to rotate, and the limiting piece (23) is used for limiting the nut seat (24) so that the nut seat (24) is driven to move along the length direction of the screw rod (21);

the liquid level regulating block (5) is fixedly connected with the nut seat (24).

3. The automatic liquid level adjustment mechanism for a 3D printer according to claim 2, characterized in that: the limiting piece (23) is a limiting rod, the nut seat (24) is provided with a limiting hole (25), the limiting rod penetrates through the limiting hole (25), and two ends of the limiting rod are fixedly connected with the mounting plate (8).

4. The automatic liquid level adjustment mechanism for a 3D printer according to claim 3, characterized in that: the driving part (22) is a motor.

5. The automatic liquid level regulating mechanism for the 3D printer is characterized by further comprising a connecting piece (9), wherein the connecting piece (9) is provided with a first supporting arm (91) and a second supporting arm (92) which are connected in an L mode, the nut seat (24) is connected with the first supporting arm (91), and the liquid level regulating block (5) is connected with the second supporting arm (92).

6. The automatic liquid level regulating mechanism for the 3D printer is characterized by further comprising a fixing piece (10), wherein the fixing piece (10) is provided with a third support arm (101) and a fourth support arm (102) which are connected in an L mode, the motor is arranged on the third support arm (101), and the fourth support arm (102) is connected with the mounting plate (8).

7. The automatic liquid level adjustment mechanism for a 3D printer according to claim 6, characterized in that: the mounting structure further comprises a flange (11), wherein the flange (11) is fixedly connected with the mounting plate (8);

the number of the flanges (11) is two, one end of the screw rod (21) is rotatably connected with one flange (11), and the other end of the screw rod (21) is rotatably connected with the other flange (11).

8. The automatic liquid level adjustment mechanism for a 3D printer according to claim 7, characterized in that: still include fixed block (12), fixed block (12) and mounting panel (8) fixed connection, the quantity of fixed block (12) is two, the one end and a fixed block (12) of gag lever post are connected, the other end and another fixed block (12) of gag lever post are connected.

9. The automatic liquid level adjustment mechanism for a 3D printer according to any one of claims 1 to 8, characterized in that: the liquid level detection device is characterized by further comprising a metal frame (13), wherein the metal frame (13) is arranged on the resin box (1), the metal frame (13) is provided with a communication hole (14) used for communicating the interior of the resin box (1), and the liquid level detection sensor (6) is used for detecting the liquid level height in the metal frame (13).