Light source module based on LCD light-curing 3D printer

Abstract

The invention discloses a light source module based on an LCD light-curing 3D printer. The light source module comprises a reflecting shade, an LED lamp panel and a water cooling plate which are fixedly arranged in sequence from top to bottom, wherein a plurality of reflecting grooves distributed in a rectangular array are formed in the reflecting shade; a plurality of LED lamp beads distributed in a rectangular array are fixedly arranged on the LED lamp panel; the quantity of the LED lamp beads is the same as that of the reflecting grooves; and the LED lamp beads and the reflecting grooves are positioned in a one-to-one correspondence manner. The light source module disclosed by the invention is simple in structure, efficient, and environmentally friendly; in the using process, a circulation cooling liquid is injected into the water cooling plate and takes away heat generated by the LED lamp panel; accordingly, not only can the LED lamp panel light intensity value of the reflecting shade be increased, but also the light intensity uniformity can be improved; and meanwhile, the influence on the semiconductor light-emitting efficiency can be avoided, and then the service life of components can be prolonged.

Description

technical field [0001] The invention relates to the technical field of 3D printer accessories, in particular to a light source module based on LCD light curing 3D printers. Background technique [0002] 3D printing is a new rapid prototyping manufacturing technology. It manufactures products through the principle of multilayer superposition growth. It can overcome special structural obstacles that cannot be achieved by traditional machining. Simplified production of arbitrary complex structural components can be realized. The existing 3D printing technology is divided into: hot melt plastic technology FDM; laser sintering molding technology; photocuring liquid resin selective area curing molding technology. [0003] The liquid resin selective area curing molding technology is divided into: 1. Laser scanning imaging light curing technology (SLA); 2. Projector image irradiation molding technology (DLP); 3. Display imaging ultraviolet spectrum light curing technology (LCD) ...

AI Technical Summary

Problems solved by technology

[0004] The light source of LCD light-curing 3D printer equipment is generally a high-energy LED ultraviolet light source lamp bead array. Due to the constraints of packaging technology, the luminous efficiency of LED can only reach 30%. A large amount of input electric energy is converted into heat. If the heat is not timely Conduction will lead to an increase in the junction temperature, which will reduce the luminous efficiency of the semiconductor, thereby accelerating the aging of the device, or even permanent failure; and if the junction temperature is too high, it will cause a red shift of the wavelength, which will make the uniformity and consistency of the light emission worse.

[0005] The small natural convection coefficient and the limitation of heat dissipation area can only meet the heat dissipation requirements of low-power devices. For array devices above 100 watts, natural convection heat dissipation alone is far from being able to solve such a high heat flux density.

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