CN212826870U

CN212826870U - Light source for photocuring 3D printer and photocuring 3D printer

Info

Publication number: CN212826870U
Application number: CN202021538165.1U
Authority: CN
Inventors: 曾江月; 曹鑫
Original assignee: Woer Innovation Shenzhen Technology Co ltd
Current assignee: Woer Innovation Shenzhen Technology Co ltd
Priority date: 2020-07-28
Filing date: 2020-07-28
Publication date: 2021-03-30
Anticipated expiration: 2030-07-28

Abstract

The utility model discloses a light source and photocuring 3D printer for photocuring 3D printer, this light source includes: the LED lamp comprises a substrate, a plurality of arrays, a lamp bead assembly and a cooling fan, wherein the lamp bead assembly comprises ultraviolet LED lamp beads, a light shield and a condenser, the condenser covers the ultraviolet LED lamp beads, and the condenser is arranged in the light shield. This application has adopted a plurality of lamp pearl subassemblies to compare with the light source that adopts single LED on the market, and the intensity of the light that throws out in printing the region is more even, has avoided photocuring 3D to print the center and has overexposed and lead to the detail fuzzy, lacks the problem that exposes to the sun all around and lead to the detail disappearance, makes the model that photocuring printed out more meticulous, and the printing quality of each position is more stable in the printing region.

Description

Light source for photocuring 3D printer and photocuring 3D printer

Technical Field

The utility model relates to a light source technical field of photocuring 3D printer especially relates to a light source and photocuring 3D printer for photocuring 3D printer.

Background

The photocuring 3D printing technology is the oldest 3D printing technology in history, and is favored by the 3D printing industry due to the advantages of high printing precision, good surface smoothness and the like. In recent years, with the progress of material science, various functional liquid photosensitive resin materials with different functions are developed, the printing precision and speed of the materials are greatly improved, and therefore, the photocuring 3D printing technology is receiving more and more attention.

However, the problem of influencing the development of photocuring 3D printing technology still plagues experts and engineers in the industry. At present, a single LED lamp bead is mostly adopted as a light source of a light-cured 3D printer in a surface projection forming mode, a reflecting funnel is used for condensing light, and a Fresnel lens is used for projecting light. The photo-curing 3D printer using the light source has the problems that the center overexposure can cause the blurring of printing details, and the periphery underexposure can cause the missing of the printing details.

SUMMERY OF THE UTILITY MODEL

The utility model provides a light source for photocuring 3D printer aims at solving above-mentioned problem.

According to a first aspect of embodiments of the present application, there is provided a light source for a photocuring 3D printer, comprising: the LED lamp comprises a substrate, a plurality of arrays, a lamp bead assembly and a cooling fan, wherein the lamp bead assembly comprises ultraviolet LED lamp beads, a light shield and a condenser, the condenser covers the ultraviolet LED lamp beads, and the condenser is arranged in the light shield.

The utility model discloses an among the light source for photocuring 3D printer, the base plate is aluminium base board or copper base plate.

The utility model discloses an among the light source for photocuring 3D printer, still include the radiator, the radiator sets up the back of base plate.

The utility model discloses an among the light source for photocuring 3D printer, the wavelength of ultraviolet LED lamp pearl is in 395-.

The utility model discloses an among the light source for photocuring 3D printer, lamp pearl subassembly is regular triangle array or square array and arranges.

According to a second aspect of the embodiments of the present application, there is provided a photocuring 3D printer, which employs the light source for photocuring 3D printer described above.

The technical scheme provided by the embodiment of the application can have the following beneficial effects: the application designs a light source and photocuring 3D printer for photocuring 3D printer, the light source has adopted a plurality of lamp pearl subassemblies to compare with the light source that adopts single LED on the market, the intensity of the light that throws out in printing the region is more even, it leads to the details fuzzy to have avoided photocuring 3D to print the center overexposure, lack the problem that leads to the details disappearance of exposing to the sun all around, the model that makes photocuring print out is more meticulous, the printing quality of each position is more stable in the printing region.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without any creative effort.

Fig. 1 is a schematic structural diagram of a light source according to an embodiment of the present invention.

Description of reference numerals:

1. an ultraviolet LED lamp bead; 2. a light shield; 3. a condenser lens; 4. a substrate; 5. a heat sink; 6. a heat dissipation fan.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

It should be further understood that the term "and/or" as used in the specification and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes such combinations.

Please refer to fig. as an illustration, the utility model discloses a light source for photocuring 3D printer, including base plate 4, a plurality of lamp pearl subassembly and radiator fan 6, a plurality of lamp pearl subassembly arrays are arranged on base plate 4. The number of the heat radiation fans 6 is two, the two heat radiation fans 6 are respectively arranged on two sides of the substrate 4, and the heat radiation fans 6 are used for radiating heat of the lamp bead assemblies. The lamp bead subassembly includes ultraviolet LED lamp pearl 1, lens hood 2 and condensing lens 3, and ultraviolet LED lamp pearl 1 is covered to condensing lens 3, and condensing lens 3 sets up in lens hood 2, and condensing lens 3 throws away the focus of ultraviolet ray. The light shield 2 is used for isolating light rays and avoiding the interference of light rays emitted by other ultraviolet LED lamp beads; under the condition that does not have light interference, can throw out sharper clear image in ultraviolet LED lamp pearl top region, can make the model of printing out clear sharpness more. This application has adopted a plurality of lamp pearl subassemblies to compare with the light source that adopts single LED on the market, and the intensity of the light that throws out in printing the region is more even, has avoided photocuring 3D to print the center and has overexposed and lead to the detail fuzzy, lacks the problem that exposes to the sun all around and lead to the detail disappearance, makes the model that photocuring printed out more meticulous, and the printing quality of each position is more stable in the printing region.

In an optional embodiment, the substrate 4 is an aluminum substrate or a copper substrate, and the aluminum substrate and the copper substrate have light weight and good heat dissipation effect. The light source for photocuring 3D printer of this embodiment still includes radiator 5, radiator 5 sets up the back at base plate 4, radiator 5 includes the fin portion that a plurality of intervals set up, fin portion has increased heat radiating area, when ultraviolet LED lamp pearl 1 is luminous, can produce a large amount of heats, the heat transmits earlier on base plate 4, then on transmitting radiator 5, pass through fin portion at last and transmit the air through heat radiation, radiator fan 6 produces the convection current air and accelerates the heat dissipation.

In this embodiment, the lamp pearl subassembly is regular triangle array arrangement or square array arrangement. The wavelength of the ultraviolet LED lamp bead 1 is set in the range of 395-420 nm.

In this embodiment, the circuit on the substrate 4 employs a series-parallel circuit and is driven using a constant current power supply. The ultraviolet LED lamp beads 1 with a plurality of numbers are connected in series to form a branch, the branches are connected in parallel, and the number of the ultraviolet LED lamp beads 1 on each branch is the same. The constant current is output by adjusting the output voltage according to the load condition.

This application can protect a photocuring 3D printer, and this photocuring 3D printer has adopted foretell light source. The light source of photocuring 3D printer of this application has adopted a plurality of lamp pearl subassemblies to compare with the light source that adopts single LED on the market, and the intensity of the light that throws out in printing the region is more even, has avoided photocuring 3D to print the center and has overexposed and lead to the details fuzzy, lacks the problem that exposes to the sun all around and lead to the details disappearance, and the model that makes photocuring print out is more meticulous, prints the printing quality of each position more stable in the region.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A light source for a photocuring 3D printer, comprising: the LED lamp comprises a substrate, a plurality of arrays, a lamp bead assembly and a cooling fan, wherein the lamp bead assembly comprises ultraviolet LED lamp beads, a light shield and a condenser, the condenser covers the ultraviolet LED lamp beads, and the condenser is arranged in the light shield.

2. The light source for a photocuring 3D printer of claim 1, wherein the substrate is an aluminum substrate or a copper substrate.

3. The light source for a photocuring 3D printer of claim 2, further comprising a heat sink disposed on a back side of the substrate.

4. The light source for the photocuring 3D printer as recited in claim 3, wherein the wavelength of the ultraviolet LED lamp bead is in the range of 395-420 nm.

5. The light source for the photocuring 3D printer of claim 1, wherein the bead assemblies are arranged in a regular triangular array or a square array.

6. A photocuring 3D printer, characterized in that the light source for photocuring 3D printer as claimed in any one of claims 1 to 5 is employed.