CN217226699U

CN217226699U - Small-size photocuring 3D printer

Info

Publication number: CN217226699U
Application number: CN202220221912.1U
Authority: CN
Inventors: 秦世军
Original assignee: Shenzhen Shibixin Technology Co ltd
Current assignee: Shenzhen Shibixin Technology Co ltd
Priority date: 2022-01-26
Filing date: 2022-01-26
Publication date: 2022-08-19
Anticipated expiration: 2032-01-26

Abstract

The utility model discloses a small-sized photocuring 3D printer, which comprises a printer body, wherein a support seat is arranged in the printer body, a forming platform for forming products is arranged on the support seat, a platform lifting mechanism is arranged on the forming platform, a laser and a galvanometer are arranged on the support seat, a hopper and a liquid level adjusting mechanism are arranged on the support seat, a scraper connected with the hopper and a driving mechanism are arranged on the support seat, and a control center is arranged on the printer body. The control precision is higher than the control precision of the traditional light source process.

Description

Small-size photocuring 3D printer

Technical Field

The utility model relates to a 3D printing apparatus field, in particular to small-size photocuring 3D printer.

Background

A solidified 3D printer is provided, wherein there is a printer using SLA technology, SLA is an abbreviation of stereolithography Apparatus, namely a Stereo stereolithography Apparatus, the working principle of which is to focus laser with specific wavelength and intensity on the surface of a stereolithography material, so that the stereolithography material is solidified from point to line and from line to surface sequentially, the drawing operation of one layer is completed, then an elevating platform moves the height of one layer in the vertical direction, and then the other layer is solidified, thus forming a three-dimensional entity by layer.

And the small-size photocuring 3D printer of current stage marketing all adopts the back-pull type shaping, print among the shaping process promptly the platform by low to eminence motion, model growth direction is opposite with platform direction of motion, it is unsettled to print in-process model below, be in the state of adhesion between resin tank and the model when causing the solidification easily, influence product quality, and the printing area and the weight of product can not be too big, otherwise can cause the printing piece to fall from the platform, lead to product material damage and printing apparatus's damage.

The 3D printer using the material self-leveling mode has the advantages that although the problems of falling of a printed piece and the like do not exist, the material coating equipment is realized by the material self-leveling mode, when the forming plane area is large, or the material viscosity is high, the leveling speed is low, the waiting time is long, bubbles can appear under some conditions, and the quality problem is very serious and unstable.

As such, there is a need for further improvement in existing photocuring 3D printers.

SUMMERY OF THE UTILITY MODEL

To the above prior art, the utility model discloses the technique that realizes is: the SLA technology is adopted for molding a non-inverted pull type product, the quality of the molded product is improved, and the defects of the traditional self-leveling product molding are overcome.

In order to achieve the above purpose, the utility model adopts the following scheme:

the utility model provides a small-size photocuring 3D printer, including the fuselage the inside supporting seat that sets up of fuselage be provided with the shaping platform that is used for the product shaping on the supporting seat be provided with platform elevating system on the shaping platform be provided with laser instrument and mirror that shakes on the supporting seat be provided with hopper and liquid level control mechanism on the supporting seat be provided with scraper and the actuating mechanism who connects the hopper on the supporting seat be provided with control center on the fuselage.

Further, the utility model provides a shaping platform is 300 mesh otter boards.

Further, the utility model provides a platform elevating system is including setting up the otter board bracket in shaping platform one side be provided with the slider on the otter board bracket be provided with the lift support on the supporting seat be provided with lead screw one on the lift support be provided with on the lift support and drive a lead screw pivoted step motor one, the slider sets up spacing axial activity on lead screw one.

Further, the utility model provides a liquid level regulating mechanism is including setting up the regulation support on the supporting seat be provided with lead screw two on the regulation support be provided with on the regulation support and drive two pivoted step motor two of lead screw two go up the spacing axial activity and be provided with the slide rail two the balancing piece has set firmly on the slide rail, in the hopper was inserted to the balancing piece bottom supporting seat one side is provided with level sensor.

Further, the utility model provides a scraper is including setting up the scraper crossbeam in the supporting seat top scraper crossbeam downside is provided with the scraper cutter body, scraper cutter body bottom is provided with the blanking hole scraper cutter body upside is provided with the connector, inside the connector is connected to the hopper through vacuum pump and vacuum generator.

Further, the utility model provides a actuating mechanism is including setting up the hold-in range in the supporting seat both sides be provided with driving motor on one of them hold-in range be provided with the pinion rack through the screw-up on the scraper crossbeam, the hold-in range is fixed on the pinion rack.

Further, the utility model provides a mirror that shakes is inside to be equipped with two lenses.

Further, the utility model provides a be provided with the switch module on the fuselage.

Further, the utility model provides a bottom of the fuselage is provided with a plurality of pulleys.

To sum up, the utility model discloses for its beneficial effect of prior art is:

the utility model discloses simple structure, high durability and convenient use, the mode shaping product of pull-down and self-leveling among the prior art has been avoided, adopt the vacuum adsorption scraper as material coating auxiliary means, guarantee that every printing layer material paints evenly, paint through the vacuum adsorption scraper in addition, can shorten material coating latency greatly, in the aspect of the light source, control accuracy is higher than traditional light source process control precision, current desktop level photocuring 3D printer stick printing weight is little, the problem of small size is solved to this equipment, and the cost is lower than current SLA printer.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a schematic exploded view of the present invention.

Fig. 3 is a second exploded perspective view of the present invention.

Fig. 4 is a third exploded perspective view of the present invention.

Fig. 5 is a fourth exploded perspective view of the present invention.

Detailed Description

The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings:

as shown in fig. 1 to 5, a small-sized photo-curing 3D printer comprises a printer body 1, wherein a supporting seat 11 is arranged inside the printer body 1, a forming platform 2 for forming a product is arranged on the supporting seat 11, a platform lifting mechanism 3 is arranged on the forming platform 2, a laser 41 and a vibrating mirror 42 are arranged on the supporting seat 11, a hopper 5 and a liquid level adjusting mechanism 6 are arranged on the supporting seat 11, a scraper 7 and a driving mechanism 8 which are connected with the hopper 5 are arranged on the supporting seat 11, a control center 12 is arranged on the printer body 1, the scraper adsorbs liquid materials in the hopper in vacuum and drives the scraper to blank above the forming platform through the driving mechanism, the liquid materials are photo-cured through the matching of the laser and the vibrating mirror to form a single-layer curing layer, the forming platform can be lifted through the platform lifting mechanism, and then the blanking is carried out for a plurality of times, And (4) solidifying to form an integral product process, wherein the liquid level regulating mechanism is used for keeping the liquid level of the liquid material in the hopper and ensuring that the scraper can adsorb the liquid material in vacuum.

In the aspect of a light source, a laser with 355nm wavelength is adopted, the laser emits laser beams, the laser beams are focused by an optical lens at the front end of the laser, the emitted laser beams are reflected to a printing plane through a vibrating mirror and are focused into a small light spot with a fixed size on the printing plane, namely, the spot laser is solidified, the light spot movement is controlled by the vibrating mirror, materials in different places are solidified due to the irradiation of the light spot through moving the light spot, single-layer printing is realized, and the integral forming of a product is realized through the printing of a plurality of single layers. Because the fixed size light spot progressive scanning mode is adopted, the spot progressive scanning and the line progressive scanning are adopted, the single-layer printing is realized, and when the printing size has deviation, the working parameters can be adjusted by controlling the upper computer software in the center to reduce the printing deviation. Because the laser output is a single light spot and the energy is concentrated, the power is unchanged (has deviation but is within the allowable range) when the light spot moves to each position in the printing process, the energy received by the printing material at each position on the same printing plane is consistent, and the material is solidified uniformly.

Because the laser directly irradiates the printing material to solidify the material, the problem of stripping does not exist, products with large breadth or large continuous area can be printed, in the printing process, the printing part is supported by the forming platform and descends along with the printing process, the risk that the printing part leaves the forming platform due to self weight is avoided, the number of the supports arranged in the process of printing the part is small, the contact surface of the supports and the part is small, and the support traces are not obvious in the process of stripping the supports.

The utility model discloses in forming platform 2 is 300 meshes otter boards, helps unnecessary liquid material whereabouts again to retrieve and continue to use.

The utility model discloses in platform elevating system 3 is including setting up the otter board bracket 31 in 2 one sides of shaping platform be provided with slider 32 on the otter board bracket 31 be provided with lifting support 33 on the supporting seat 11 be provided with lead screw 34 on the lifting support 33 be provided with on the lifting support 33 and drive lead screw 34 pivoted step motor 35, slider 32 sets up spacing axial activity on lead screw 34, and through the start-up of step motor, lead screw rotates to make the slider can the axial lift activity, further make otter board bracket lift removal, the shaping platform consequently can lift and remove, solidifies one by one through the liquid material of multilayer, final shaping goes out the whole shape of product on the shaping platform.

The liquid level adjusting mechanism 6 in the utility model comprises an adjusting support 61 arranged on a support seat 11, a second screw rod 62 is arranged on the adjusting support 61, a second stepping motor 63 for driving the second screw rod 62 to rotate is arranged on the adjusting support 61, a slide rail 64 is axially and movably arranged on the second screw rod 62, a balance block 65 is fixedly arranged on the slide rail 64, the bottom of the balance block 65 is inserted into the hopper 5, a liquid level sensor 66 is arranged on one side of the supporting seat 11, when the second stepping motor is started, the second screw rod is rotated, thereby the slide rail can move up and down, the bottom of the balance block is inserted into the liquid material or separated from the liquid material, the liquid level in the hopper can be adjusted, the liquid level state can be monitored by the liquid level sensor, thereby with signal transmission to control center, control center drive step motor two, make the liquid level keep established parameter, guarantee that the scraper can the vacuum adsorption to the liquid material.

In the utility model, the scraper 7 comprises a scraper beam 71 arranged above a supporting seat 11, a scraper body 72 is arranged at the lower side of the scraper beam 71, a blanking hole 73 is arranged at the bottom of the scraper body 72, a connecting port 74 is arranged at the upper side of the scraper body 72, the connecting port 74 is connected to the interior of a hopper 5 through a vacuum pump and a vacuum generator, the printing plane sweeping is carried out at the upper side of a forming platform by the scraper through the driving of a driving mechanism, the material is arranged above the forming platform and then is photocured, the inner cavity of the scraper is in a negative pressure state through the vacuum generator and the vacuum pump, the liquid material is sucked into the inner cavity of the scraper, the coating of the printing plane is realized in the process of sweeping, the liquid material generally uses resin materials, the connecting mode of the connecting port is that an air pipe joint is arranged on the connecting port, the air pipe joint is connected with one end of a hose, the other end of the hose is connected with one end of the vacuum generator, the other end of the vacuum generator is connected with a vacuum pump through another hose, and the vacuum pump is arranged at the bottom of the equipment.

The utility model discloses in actuating mechanism 8 is including setting up the hold-in range 81 in 11 both sides of supporting seat be provided with driving motor 82 on one of them hold-in range 81 be provided with pinion rack 83 through screw fastening on scraper crossbeam 71, hold-in range 81 is fixed on pinion rack 83, and driving motor starts the back, will drive the hold-in range and rotate, because the pinion rack passes through screw fastening messenger hold-in range and scraper crossbeam and fixes, consequently the hold-in range activity will be taken and moved scraper crossbeam axial displacement back and forth, accomplishes the printing sweep of shaping platform, and the pinion rack has the plate of a plurality of toothlet for inside, driving motor connection control center.

The utility model discloses in the mirror 42 that shakes is inside to be equipped with two lenses, and the laser instrument jets out the facula, reflects the working plane through the mirror that shakes, shakes the mirror inside and reflects the facula by two lenses, through the contained angle that changes facula incident light path and reflection mirror piece, changes the position of facula on the shaping plane, carries out the displacement of facula through this mode, realizes the sweep.

The utility model discloses in be provided with switch module 91 on the fuselage 1, contain a plurality of switches, for example scram switch, lighting switch, computer switch etc..

The utility model discloses in 1 bottom of fuselage is provided with a plurality of pulleys 92, and the pulley adopts the type that can adjust horizontal position, makes whole fuselage can adjust, keeps whole levelness.

The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only illustrative of the principles of the present invention, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and changes fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a small-size photocuring 3D printer, including fuselage (1), its characterized in that: fuselage (1) is inside to set up supporting seat (11) be provided with on supporting seat (11) and be used for the fashioned forming platform (2) of product be provided with platform elevating system (3) on forming platform (2) be provided with laser instrument (41) and mirror (42) of shaking on supporting seat (11) be provided with hopper (5) and liquid level control mechanism (6) on supporting seat (11) be provided with scraper (7) and actuating mechanism (8) of connecting hopper (5) on supporting seat (11) be provided with control center (12) on fuselage (1).

2. The compact stereolithographic 3D printer of claim 1, wherein said forming table (2) is a 300 mesh screen.

3. The small-sized photocuring 3D printer as claimed in claim 1, wherein the platform lifting mechanism (3) comprises a screen bracket (31) arranged on one side of the forming platform (2), a slide block (32) is arranged on the screen bracket (31), a lifting support (33) is arranged on the support seat (11), a first screw rod (34) is arranged on the lifting support (33), a first stepping motor (35) for driving the first screw rod (34) to rotate is arranged on the lifting support (33), and the slide block (32) is arranged on the first screw rod (34) and can move axially in a limiting manner.

4. The small-sized photocuring 3D printer according to claim 1, wherein the liquid level adjusting mechanism (6) comprises an adjusting support (61) arranged on the support base (11), a second lead screw (62) is arranged on the adjusting support (61), a second stepping motor (63) for driving the second lead screw (62) to rotate is arranged on the adjusting support (61), a slide rail (64) is axially movably arranged on the second lead screw (62), a balance block (65) is fixedly arranged on the slide rail (64), the bottom of the balance block (65) is inserted into the hopper (5), and a liquid level sensor (66) is arranged on one side of the support base (11).

5. The compact light-cured 3D printer according to claim 1, wherein the scraper (7) comprises a scraper beam (71) disposed above the support base (11), a scraper body (72) is disposed on the lower side of the scraper beam (71), a blanking hole (73) is disposed at the bottom of the scraper body (72), and a connection port (74) is disposed on the upper side of the scraper body (72), and the connection port (74) is connected to the inside of the hopper (5) through a vacuum pump and a vacuum generator.

6. The small-sized light-cured 3D printer according to claim 5, wherein the driving mechanism (8) comprises synchronous belts (81) arranged at two sides of the supporting seat (11), a driving motor (82) is arranged on one of the synchronous belts (81), a toothed plate (83) is arranged on the scraper beam (71) through screw fastening, and the synchronous belts (81) are fixed on the toothed plate (83).

7. A compact stereolithographic 3D printer according to claim 1, characterized in that said galvanometer (42) is internally provided with two mirrors.

8. The compact light-cured 3D printer according to claim 1, characterized in that a switch module (91) is arranged on the body (1).

9. A compact stereolithographic 3D printer as claimed in claim 1, characterized in that a plurality of pulleys (92) are provided at the bottom of said body (1).