CN216760823U

CN216760823U - Photocuring 3D printer with pressure measurement

Info

Publication number: CN216760823U
Application number: CN202123390971.6U
Authority: CN
Inventors: 骆处默
Original assignee: Yiwu Real Maker Electronic Technology Co ltd
Current assignee: Yiwu Real Maker Electronic Technology Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-06-17
Anticipated expiration: 2031-12-24

Abstract

The utility model provides a photocuring 3D printer with a pressure detection device, and belongs to the technical field of 3D printing. The forming platform solves the problems that the existing forming platform is pressed on foreign matters and a resin pool because whether solid foreign matters remain in the resin pool or the descending numerical value is deviated in the descending process, so that a printing body and the resin pool are damaged. The utility model comprises a frame, a resin pool, a forming platform and a lifting driving mechanism, wherein the resin pool, the forming platform and the lifting driving mechanism are arranged on the frame, the forming platform is arranged above the resin pool, the lifting driving mechanism drives the forming platform to lift in the resin pool, the frame is also provided with a pressure detection device, the pressure detection device is arranged on the frame of a printer, and the resin pool is arranged on the pressure detection device. The utility model has the advantages that the pressure sensor is arranged between the resin pool and the bedplate, so that the gravity of the resin pool is applied to the detection end of the pressure sensor, and the damage to a printing body and the resin pool is avoided.

Description

Photocuring 3D printer with pressure measurement

Technical Field

The utility model belongs to the technical field of 3D printing, and relates to a photocuring 3D printer with a pressure detection device.

Background

The photocuring 3D printer utilizes ultraviolet light or other light sources with specific wavelength ranges to irradiate liquid photosensitive resin and initiate photochemical reaction, so that the photosensitive resin in the area irradiated by the light sources is solidified and formed from the liquid state, and the object to be formed can be obtained after layer-by-layer solidification. The structure of the photocuring 3D printer generally includes a forming platform, a resin pool, imaging glass, a light source, etc., the light source forms a transmission area to be cured at the bottom of the resin pool through the imaging glass, and liquid resin between the forming surface of the forming platform or the cured layer and the bottom of the resin pool is cured and formed in the transmission area.

At the beginning of printing, the forming platform is lowered to the bottom inside the resin pool, the bottom of the resin pool is a transparent bottom film, the bottom surface of the forming platform is approximately contacted with the bottom film, a set layer thickness distance (usually 0.025mm-0.1mm) is reserved, then a part of light is transmitted by the light source, the part of light is projected onto the resin between the bottom surface of the forming platform and the resin pool film, and the photosensitive resin is subjected to light excitation to generate polymerization reaction and is converted into a solid state from a liquid state. When the forming platform is lifted upwards, the solidified resin can be separated from the resin pool film, so that the printing body of the first layer is formed, and when the forming platform is lifted upwards, the surrounding resin can be diffused to the first layer exposure area, and the resin is filled and spread in the first layer exposure area again for printing of the next layer. And then the forming platform is lowered to a position one layer thickness higher than the former position, the light source projects light required by the printing of the second layer, and the resin between the first layer of printing body and the resin pool film is cured to form the second layer of printing body. This process is repeated a plurality of times until the printing process is finished.

In the traditional mode, after every layer of printing, the shaping platform can lift more than 3mm, later falls to the position that is higher a layer thickness value than preceding one deck again, at the in-process that descends, because of can't detect whether have remaining solid-state foreign matter in the resin pond, also or the numerical value that descends takes place the deviation, and shaping platform descends when leading to printing, sticiss on foreign matter and resin pond, makes resin pond pressure too big to destroy and print body and resin pond.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems of the existing photocuring 3D printer, and provides a photocuring 3D printer which can detect the pressure change of a resin pool and is convenient to disassemble and assemble a forming platform.

The purpose of the utility model can be realized by the following technical scheme:

the utility model provides a photocuring 3D printer with pressure measurement, includes the frame and sets up resin pond, shaping platform, the lift actuating mechanism in the frame, the shaping platform sets up in the top in resin pond, and lift actuating mechanism drives the shaping platform and goes up and down in the resin pond, its characterized in that, the frame on still be equipped with pressure measurement, pressure measurement sets up in the frame of printer, the resin pond sets up on this pressure measurement.

In foretell photocuring 3D printer with pressure measurement, pressure measurement include mounting panel, pressure sensor, a plurality of pressure sensor are fixed to be set up on the mounting panel, the mounting panel is fixed to be set up in the frame, pressure sensor's sense terminal is vertical up, resin pool gravity is exerted on pressure sensor's sense terminal.

In the photocuring 3D printer with the pressure detection device, the rack is fixedly provided with the bedplate, the upper surface of the bedplate is provided with the mounting groove, the mounting plate is embedded in the mounting groove, and the shape of the mounting plate is matched with that of the mounting groove.

In the photocuring 3D printer with the pressure detection device, four pressure sensors are uniformly distributed at four top corners of the rectangular mounting plate.

In the light-cured 3D printer with the pressure detection device, a backing plate is further arranged between the pressure sensor and the resin pool, and the resin pool is detachably arranged on the backing plate.

In foretell photocuring 3D printer with pressure measurement device, the shaping platform set up on lift actuating mechanism through a detachable construction, this detachable construction includes the fixed block, the fixed block links firmly through a connecting piece and lift actuating mechanism's slider, the shaping platform passes through the mounting bracket horizontal slip and sets up on the fixed block, still rotate in the fixed block and be equipped with a magnetic switch, through rotating this magnetic switch, make fixed block and mounting bracket can be fixed by the magnetization absorption.

In foretell photocuring 3D printer with pressure measurement, magnetic switch include magnet, magnetic conduction piece, magnetic conduction board, magnetic conduction piece and magnetic conduction board homoenergetic are magnetized by magnet, magnetic conduction piece links firmly with the fixed block, and the magnetic conduction board links firmly with the mounting bracket, and the up end at magnetic conduction piece is established to the magnetic conduction board cover, be equipped with a magnetic shield in the inner chamber of magnetic conduction piece, this magnetic shield separates into two parts about with magnetic conduction piece, and magnet rotates through a rotary device and sets up on the magnetic shield, rotary device can drive magnet and rotate to make magnetic conduction board and magnetic conduction piece can be magnetized and adsorb fixedly.

In foretell photocuring 3D printer with pressure measurement, the cross-sectional shape of mounting bracket is the U-shaped of invering, is equipped with bilateral symmetry's two direction inclined planes on the fixed block, be equipped with the fitting surface corresponding with this direction inclined plane on two inboard faces of mounting bracket, the mounting bracket compresses tightly downwards on the fixed block to it is spacing about making two direction inclined planes and corresponding fitting surface laminating mutually form.

In foretell photocuring 3D printer with pressure measurement, the U-shaped of cross-sectional shape for invering of magnetic conduction board, the fixed interior top surface that sets up at the mounting bracket of magnetic conduction board, the U type opening part at the magnetic conduction board is established to the fixed block card, the overall dimension looks adaptation of the U type opening size of magnetic conduction board and above-mentioned magnetic conduction piece, in the shaping platform pushed the fixed block through the mounting bracket, the magnetic conduction board can promote to the medial surface counterbalance with the fixed block to the position that makes the shaping platform is corresponding with the position in resin pond.

In the above photocuring 3D printer with the pressure detection device, the lifting drive mechanism includes a linear module.

In the photocuring 3D printer with the pressure detection device, the rotating device comprises a handle, and the handle is fixedly connected with the magnet.

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

1. the forming platform is arranged on the fixed block in a sliding mode through the mounting frame, due to the existence of the magnetic isolation plate, when the magnet is in a vertical state, the magnetic conduction plate and the magnetic conduction block cannot be magnetized, and during mounting, the mounting frame is horizontally pushed into the fixed block to form positioning in the front direction, the rear direction and the left direction and the right direction; rotating the magnet to a horizontal state to enable the magnetic conduction plate and the magnetic conduction block to be magnetized by the magnet, and enabling the magnetic conduction plate and the magnetic conduction block to be fixed in an adsorption mode, so that the mounting frame is fixed on the fixing block; the integral assembly and disassembly of the forming platform are more convenient, quicker, time-saving and labor-saving;

2. set up pressure sensor between resin pool and platen, make the gravity in resin pool apply on pressure sensor's detection end, print the in-process, detect whether excessive pressure through pressure sensor, in case there is the circumstances of excessive pressure just to shut down immediately, avoid destroying printing body, resin pool.

Drawings

FIG. 1 is a schematic diagram of the general structure of a photocuring 3D printer of the present invention;

FIG. 2 is a cross-sectional view of the detachable structure of the present invention;

FIG. 3 is a magnetic field line profile when the magnetic switch of the present invention is closed;

FIG. 4 is a magnetic field line profile when the magnetic switch of the present invention is open;

fig. 5 is a schematic structural view of the pressure detection device of the present invention.

In the figure, 1, a forming platform; 2. a mounting frame; 3. a fixed block; 4. a magnet; 5. a magnetic conduction block; 6. a magnetic conductive plate; 7. a magnetic shield plate; 8. a guide slope; 9. a linear module; 10. mounting a plate; 11. a pressure sensor; 12. a platen; 13. a base plate; 18. a connecting member.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, the photocuring 3D printer with the pressure detection device includes a frame, a resin pool, a forming platform 1, a lifting driving mechanism and a light source, wherein the resin pool, the forming platform 1, the lifting driving mechanism and the light source are arranged on the frame, the forming platform 1 is arranged above the resin pool, the light source is arranged below the resin pool, the lifting driving mechanism drives the forming platform 1 to lift in the resin pool, and the lifting driving mechanism includes a linear module 9.

As shown in fig. 2, forming platform 1 sets up on lift actuating mechanism through a detachable construction, detachable construction include fixed block 3, fixed block 3 links firmly with lift actuating mechanism's slider through a connecting piece 18, forming platform 1 sets up on fixed block 3 through 2 horizontal slip of mounting bracket, it is equipped with a magnetic switch still to rotate in the fixed block 3, through rotating this magnetic switch, makes fixed block 3 and mounting bracket 2 can be adsorbed fixedly by the magnetization.

As shown in fig. 3 and 4, the magnetic switch includes a magnet 4, a magnetic block 5, and a magnetic conductive plate 6, both the magnetic block 5 and the magnetic conductive plate 6 can be magnetized by the magnet 4, the magnetic block 5 is fixedly connected with the fixing block 3, the magnetic conductive plate 6 is fixedly connected with the mounting frame 2, the magnetic conductive plate 6 covers the upper end surface of the magnetic block 5, a magnetic isolation plate 7 is arranged in the inner cavity of the magnetic block 5, the magnetic isolation plate 7 separates the magnetic block 5 into a left part and a right part, the magnet 4 is rotatably arranged on the magnetic isolation plate 7 through a rotating device, and the rotating device can drive the magnet 4 to rotate, so that the magnetic conductive plate 6 and the magnetic block 5 can be magnetized, adsorbed and fixed. The rotating device comprises a handle which is fixedly connected with the magnet 4.

When the magnet 4 is in a vertical state, the magnetic force lines are in the direction shown in fig. 3, and both the magnetic conduction plate 6 and the magnetic conduction block 5 cannot be magnetized; the magnet 4 is rotated to be in a horizontal state, the magnetic force lines are shown in figure 4, the magnetic conduction plate 6 and the magnetic conduction block 5 can be magnetized by the magnet 4, and the magnetic conduction plate 6 and the magnetic conduction block 5 are fixed in an adsorption mode, so that the mounting frame 2 is fixed on the fixing block 3.

The cross-sectional shape of mounting bracket 2 is the U-shaped of invering, is equipped with bilateral symmetry's two direction inclined planes 8 on fixed block 3, be equipped with the fitting surface corresponding with this direction inclined plane 8 on two inboard faces of mounting bracket 2, mounting bracket 2 compresses tightly down on fixed block 3 to it is spacing about making two direction inclined planes 8 and corresponding fitting surface laminating mutually to form. The cross-sectional shape of magnetic conduction board 6 is the U-shaped of invering, and magnetic conduction board 6 is fixed to be set up at the interior top surface of mounting bracket 2, and the U type opening part at magnetic conduction board 6 is established to 3 cards of fixed block, and the U type opening size of magnetic conduction board 6 and the overall dimension looks adaptation of above-mentioned magnetic conduction piece 5, in shaping platform 1 pushed fixed block 3 through mounting bracket 2, magnetic conduction board 6 can promote to the medial surface counterbalance with fixed block 3 to make the position of shaping platform 1 corresponding with the position in resin pond, around forming, control two ascending location in direction.

As shown in fig. 5, the frame is further provided with a pressure detection device on which the resin pool is disposed. Pressure measurement device include mounting panel 10, pressure sensor 11, a plurality of pressure sensor 11 are fixed to be set up on mounting panel 10, mounting panel 10 is fixed to be set up in the frame, pressure sensor 11's sense terminal is vertical up, resin pool gravity is exerted on pressure sensor 11's sense terminal. The frame on be fixed with a platen 12, platen 12 upper surface is opened has a mounting groove, the mounting panel 10 inlays and establishes in this mounting groove, the shape of mounting panel 10 and the shape looks adaptation of mounting groove. The four pressure sensors 11 are uniformly distributed at the four corners of the rectangular mounting plate 10. A backing plate 13 is arranged between the pressure sensor 11 and the resin pool, and the resin pool is detachably arranged on the backing plate 13.

It is to be understood that in the claims, specification of the utility model, all "including … …" are to be interpreted in an open-ended sense, i.e. in a sense equivalent to "including at least … …", and not in a closed sense, i.e. in a sense not to be interpreted as "including … … only".

The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.

Claims

1. The utility model provides a photocuring 3D printer with pressure measurement, includes frame and resin pond, forming platform (1), the lift actuating mechanism of setting in the frame, forming platform (1) sets up in the top in resin pond, and lift actuating mechanism drive forming platform (1) goes up and down in the resin pond, its characterized in that, the frame on still be equipped with pressure measurement, pressure measurement sets up in the frame of printer, the resin pond sets up on this pressure measurement.

2. The photocuring 3D printer with the pressure detection device is characterized in that the pressure detection device comprises a mounting plate (10) and a pressure sensor (11), wherein the pressure sensors (11) are fixedly arranged on the mounting plate (10), the mounting plate (10) is fixedly arranged on a rack, the detection ends of the pressure sensors (11) are vertically upward, and the gravity of a resin pool is applied to the detection ends of the pressure sensors (11).

3. The photocuring 3D printer with the pressure detection device as claimed in claim 2, wherein the frame is fixedly provided with a platen (12), the upper surface of the platen (12) is provided with a mounting groove, the mounting plate (10) is embedded in the mounting groove, and the shape of the mounting plate (10) is matched with the shape of the mounting groove.

4. The photocuring 3D printer with pressure detection device as claimed in claim 2, characterized in that a backing plate (13) is further arranged between the pressure sensor (11) and the resin pool, and the resin pool is detachably arranged on the backing plate (13).

5. Photocuring 3D printer with pressure detection device according to claim 2, characterized in that four pressure sensors (11) are evenly distributed at the four corners of a rectangular mounting plate (10).

6. The photocuring 3D printer with the pressure detection device as claimed in claim 1, wherein the forming platform (1) is arranged on the lifting driving mechanism through a detachable structure, the detachable structure comprises a fixed block (3), the fixed block (3) is fixedly connected with a sliding block of the lifting driving mechanism through a connecting piece (18), and the forming platform (1) is horizontally arranged on the fixed block (3) through a mounting rack (2).

7. The photocuring 3D printer with the pressure detection device as claimed in claim 6, wherein the cross-sectional shape of the mounting rack (2) is an inverted U shape, two bilaterally symmetrical guide inclined planes (8) are arranged on the fixing block (3), matching surfaces corresponding to the guide inclined planes (8) are arranged on two inner side surfaces of the mounting rack (2), and the mounting rack (2) is pressed downwards on the fixing block (3) so that the two guide inclined planes (8) are attached to the corresponding matching surfaces to form left and right limiting.