CN210190595U - Photocuring 3D printer - Google Patents

Abstract

The utility model discloses a photocuring 3D printer, include: a body; a forming table for carrying a printing intermediate; a tank for holding a liquid polymerizable material; the optical machine is used for providing light within a wavelength range of the solidified polymerizable material, the optical machine irradiates the polymerizable material in the trough, and the polymerizable material is solidified to form a printing intermediate after being irradiated; the ray apparatus even has the fan, and the fan is used for the heat dissipation of ray apparatus, and the fan even has the pipeline, the pipeline includes air intake and air outlet, and this air intake links to each other with the fan, and this air outlet links to each other with the silo, conveys the silo with heat energy ventilation blower and the pipeline that the ray apparatus work back produced, plays the effect of heating to the silo, reduces the effect of polymerizable material viscosity for the mobility of polymerizable material improves, the speed that flows back promptly improves, has realized the promotion of 3D printing speed, and get up the heat utilization that the ray apparatus produced, reduce the energy consumption, the purpose that environment-friendly 3D printed has been realized.

Description

Photocuring 3D printer

Technical Field

The utility model relates to a vibration material disk trade, concretely relates to photocuring 3D printer.

Background

The 3D printer is a rapid prototyping machine, which uses a digital model file as a base and uses adhesive materials such as powdered metal or plastic to obtain a product by layer-by-layer printing. The photocuring 3D printer is gradually popularized and applied due to the advantages of high manufacturing speed, multiple material types, good economic benefit and the like.

The technical principle of photocuring 3D printing is that a three-dimensional model is layered in one direction to obtain outline information or image information of each layer, then data information of each layer is achieved through an optical machine, photocuring polymerizable materials are irradiated by UV light to cause polymerization reaction, curing of each layer is completed, iteration is repeated, and finally a three-dimensional entity model is formed. Because the release action that the printed matter that will be constructing need be separated from the bottom surface of solidification emergence region to every printing one deck, still need to stand for a few seconds after the release and make the filling of photocuring polymerizable material reflux, can carry out the solidification of next aspect after the liquid level is steady, print one deck often need ten seconds, efficiency ratio is lower.

Photocuring three-dimensional printing is required to enter large-scale industrial application, and the production cost of unit products needs to be further reduced. The improvement of the production efficiency of the photocuring three-dimensional process can be mainly attributed to the fact that when the solid resin which is subjected to photocuring is separated from the bottom surface of the material box and is adhered to the lifting plate or the resin layer which is formed in the last step, the backflow speed of the raw material is improved, particularly for the high-viscosity polymerizable material, the backflow speed of the polymerizable material is low, and the improvement of the photocuring 3D printer is needed to improve the backflow speed of the polymerizable material.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an environment-friendly photocuring 3D printer that simple structure, it is fast to print in-process polymerizable material backward flow, and the energy consumption is low is provided.

In order to solve the technical problem, the utility model provides a photocuring 3D printer, include: a body; a forming table for carrying a printing intermediate; a tank for holding a liquid polymerizable material; the optical machine is used for providing light within a wavelength range of the solidified polymerizable material, the optical machine irradiates the polymerizable material in the trough, and the polymerizable material is solidified to form a printing intermediate after being irradiated; the ray apparatus even has the fan, the fan is used for the heat dissipation of ray apparatus, and this fan even has the pipeline, the pipeline includes air intake and air outlet, and this air intake links to each other with the fan, and this air outlet links to each other with the silo and plays the effect of heating the silo.

After the structure, compared with the prior art, the utility model, have following advantage: convey the silo with heat energy ventilation blower and the pipeline that the ray apparatus work back produced, play the effect of heating to the silo, because polymerizable material generally is resin material, its viscosity reduces along with the temperature rise, this structure has realized through heating to the silo, reduce the effect of polymerizable material viscosity, make the mobility of polymerizable material improve, the speed that flows back improves promptly, 3D printing speed's promotion has been realized, and get up the heat utilization of ray apparatus production, reduce the energy consumption, environment-friendly 3D printing's purpose has been realized.

Furthermore, a heating device is arranged between the air outlet and the trough.

Further, the heating device is a heating wire or an infrared heater.

Further, the heating equipment is connected with a temperature controller.

Furthermore, the optical machine is arranged in the machine body, and a ventilation groove is formed in the side wall of the machine body.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

wherein: 1. a body; 2. an optical machine; 3. a trough; 4. a forming table; 5. a fan; 6. a pipeline; 7. a ventilation slot; 8. and (4) heating the equipment.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

It will be understood that when an element is referred to as being "on," "attached to," "connected to," combined with, "contacting" another element, etc., it can be directly on, attached to, connected to, combined with, and/or contacting the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on," "directly attached to," directly connected to, "directly engaged with" or "directly contacting" another element, there are no intervening elements present. One skilled in the art will also appreciate that a structure or member that is referred to as being disposed "adjacent" another member may have portions that overlie or underlie the adjacent member.

Spatially relative terms, such as "below," "lower," "above," "upper," and the like, may be used herein for ease of description to describe an element or component's relationship to another element or component as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. Similarly, the terms "upward," "downward," "vertical," "horizontal," and the like are used herein for illustrative purposes only, unless explicitly indicated otherwise.

As shown in fig. 1, the photocuring 3D printer includes a body 1, a forming table 4, a trough 3, and an optical machine 2 are respectively arranged on the body 1 from top to bottom, wherein the forming table 4 is connected with a lifting mechanism, the specific lifting mechanism can be a common screw rod assembly on the market, wherein a screw rod is linked with a motor, a screw nut is fixed with the forming table 4, the forming table 4 is driven by the screw nut to move in the screw rod direction, so the lifting mechanism can drive the forming table 4 to move in the vertical direction, the trough 3 is arranged below the forming table, the trough 3 is filled with a polymerizable material, the polymerizable material mainly comprises a resin, the viscosity of the resin is reduced along with the temperature rise, the bottom of the trough 3 is transparent, the optical machine 2 is arranged below the trough 3, the optical machine 2 is used for providing light within the wavelength range of the curable material, the optical machine 2 can be a projector adopting the DLP technology, the light machine 2 can also be a laser emitter which is connected with a movement mechanism, so that the laser beam can be used for drawing the light pattern required to be solidified on each layer on the trough 3 in a point-to-line mode.

In order to avoid the influence of the light of the optical machine 2 on the printing environment, the optical machine 1 is arranged in the cavity of the machine body 1, and the optical machine 2 can generate heat energy during working, so that a ventilation groove 7 is formed in the side wall of the cavity of the machine body 1, the optical machine 2 is provided with a fan 5 for dissipating heat, the fan 5 is connected with a pipeline 6, the pipeline 6 comprises an air inlet and an air outlet, the air inlet is connected with the fan 5, the air outlet is connected with the material groove 3, and the heat energy of the optical machine 2 is transmitted to the polymerizable material in the material groove 3 through the fan 5 and the.

Generally, the polymerizable material used for photocuring 3D printing is a photosensitive resin, the flow rate of the resin is related to the viscosity thereof, the higher the viscosity, the poorer the fluidity of the resin, and the higher the resin temperature, the lower the viscosity of the resin, i.e., the better the fluidity of the resin, so that heating the polymerizable material can increase the flow rate thereof.

In order to further improve the heating efficiency of the polymerizable material, a heating device 8 is arranged between the air outlet of the pipeline 6 and the trough 3, preferably, the heating device 8 can be an electric heating wire or an infrared heater, and the heating device 8 is connected with a temperature controller which can control the heating device 8 to be turned on and off, so that the structure can realize intelligent temperature-controlled heating of the polymerizable material.

Preferably, in order to better separate the printing intermediate from the feeding groove during the 3D printing process, a release film may be covered on the bottom of the feeding groove 3, and specifically, the release film may be any one of a polychlorotrifluoroethylene film, a polytetrafluoroethylene film, a polyvinylidene fluoride film, a polyvinyl trichloride film, a vinylidene fluoride-chlorotrifluoroethylene copolymer film, a tetrafluoroethylene-perfluoroalkyl ether copolymer film, a tetrafluoroethylene-hexafluoropropylene copolymer film, a vinylidene fluoride-hexafluoropropylene copolymer film, an ethylene-tetrafluoroethylene copolymer film, an ethylene-chlorotrifluoroethylene copolymer film, a fluorine-containing acrylate copolymer film, and an ethylene fluoride propylene film.

When the photocuring 3D printer works, the optical machine 2 is started, when the polymerizable material is irradiated by the light of the optical machine 2 in the trough 3, the energy absorbed by the polymerizable material is subjected to polymerization reaction to be cured and molded to form a printing intermediate, the lifting mechanism drives the molding table 4 to move upwards and lift the printing intermediate (a three-dimensional structure formed after the polymerizable material is photocured), the heat energy emitted by the optical machine 2 is transmitted to the polymerizable material through the fan 5 and the pipeline 6, the flow speed of the polymerizable material is accelerated after the temperature of the polymerizable material is raised, the polymerizable material continues to receive the light to be cured after reflowing, and the layer-by-layer manufacturing is carried out, so that a complete three-dimensional printed object is formed.

The above description is only a preferred and feasible embodiment of the present invention, and therefore, the scope of the present invention should not be limited by the above description, and various other modifications made by the technical solutions and concepts of the present invention should be included in the protection scope of the present invention.

Claims (5)

1. Photocuring 3D printer includes: a body; a forming table for carrying a printing intermediate; a tank for holding a liquid polymerizable material; the optical machine is used for providing light within a wavelength range of the solidified polymerizable material, the optical machine irradiates the polymerizable material in the trough, and the polymerizable material is solidified to form a printing intermediate after being irradiated; the optical machine is characterized in that the optical machine is connected with a fan, the fan is used for heat dissipation of the optical machine, the fan is connected with a pipeline, the pipeline comprises an air inlet and an air outlet, the air inlet is connected with the fan, and the air outlet is connected with a trough and plays a role in heating the trough.

2. The photocuring 3D printer of claim 1, wherein: and a heating device is arranged between the air outlet and the trough.

3. The photocuring 3D printer of claim 2, wherein: the heating device is an electric heating wire or an infrared heater.

4. The photocuring 3D printer of claim 1, wherein: the heating equipment is connected with a temperature controller.

5. The photocuring 3D printer of claim 1, wherein: the ray apparatus is arranged in the machine body, and the side wall of the machine body is provided with a ventilation groove.

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