Photocuring 3D printing nozzle

Abstract

The invention relates to a photocuring 3D printing spray head, and relates to the technical field of plastic molding, the photocuring 3D printing spray head comprises an extrusion device, a fixing device, a charging barrel, a light transmitting head, a deflection light reflecting device and a deflection magnetic device, the fixing device is installed on the charging barrel, the extrusion device is installed on the charging barrel, the light transmitting head is installed at the tail end of the charging barrel, and the deflection light reflecting device is installed at the tail end of the charging barrel. A plurality of light sources are installed on the light-transmitting head, a deflection cavity is formed in the light-transmitting head, the deflection light-reflecting device is installed in the deflection cavity in a deflectable mode, the deflection light-reflecting device is made of a permanent magnet, the deflection magnetic device is installed on the deflection cavity, the deflection cavity is blocked by the deflection magnetic device, and the deflection cavity is filled with industrial-grade white oil. A buoyancy cavity is formed in the deflection light reflecting device, a caliber controller is arranged at the output end of the material outflow channel, two bent elastic control pieces are formed on the lower side of the caliber controller, and the deflection magnetic device pushes the deflection light reflecting device to deflect, so that change of a curing area is achieved, and adjustable control over printing precision is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic molding, and in particular to a light-curing 3D printing nozzle. Background Art

[0002] UV-curing print head (UEP), U: light source; E: extrusion force; P: printing. UEP is a print head that extrude light-curing resin under extrusion force and solidifies it under the directional irradiation of light source to achieve molding.

[0003] The photocuring print head consists of a photocuring head housing and a barrel. The crystal photocuring head housing is a hollow shell with an open bottom. The inner size of the shell is the same as the inner diameter of the barrel. The outer side of the shell is equipped with a light source fixing frame and a reflector fixing frame from top to bottom. The barrel is connected to the photocuring head housing. The light source is irradiated at the output end of the photocuring head housing to achieve curing molding after extrusion.

[0004] The existing technology can only perform the curing process after the light-curing resin is extruded. Once extruded, the resin will collapse. The existing technology has also proposed a solution of using transparent materials to constrain the light-curing resin for extrusion. In this way, the light source can start curing irradiation at the first moment of extrusion. However, the irradiation range is not easy to adjust, and it is not easy to adjust the diameter of the cured material, and it is difficult to adjust the printing accuracy. Summary of the Invention

[0005] In order to overcome the technical defects of the existing technology, the present invention provides a light-curing 3D printing nozzle to achieve changes in the curing area and realize adjustable control of printing accuracy.

[0006] The technical solution adopted by the present invention is: The light-curing 3D printing nozzle includes an extruder, a fixing device, a barrel, a light-transmitting head, a deflection and reflection device, and a deflection magnetic device. The fixing device is installed on the barrel, the extruder is installed on the barrel, the light-transmitting head is installed at the end of the barrel, a plurality of light sources are installed on the light-transmitting head, a deflection cavity is provided on the light-transmitting head, the deflection and reflection device is rotatably installed in the deflection cavity, the deflection and reflection device is made of a permanent magnet, a reflector is installed on the deflection and reflection device, and the deflection magnetic device is installed on the deflection cavity. The deflection magnetic device blocks the deflection cavity, and the deflection cavity is filled with industrial-grade white oil. The deflection reflective device has a buoyancy cavity. The output end of the material outflow channel is provided with a caliber controller, and the caliber controller is installed at the end of the material outflow channel through an interference fit. Two elastic control plates are formed on the lower side of the caliber controller and are bent toward the inside of the material outflow channel. Each of the elastic control plates is made of transparent plastic. The light beam passes through each elastic control plate and irradiates the material outflow channel. The deflection magnetic device drives the deflection reflective device to deflect.

[0007] Preferably, the extrusion device includes an extrusion motor and a screw, the screw is rotatably installed in the barrel, the extrusion motor is installed on the barrel, and the extrusion motor is transmission-connected to the screw.

[0008] Preferably, the extrusion device includes a linear motor and a piston, the piston slides along the barrel, the linear motor is mounted on the barrel, and the piston is mounted at the output end of the linear motor.

[0009] Preferably, the barrel is provided with threads on the outside, and the fixing device includes two clamping nuts and two anti-loosening washers. The two clamping nuts are installed on the outside of the barrel through a thread pair, and the two anti-loosening washers are located between the two clamping nuts.

[0010] Preferably, the barrel and the light transmitting head are interference fit.

[0011] Preferably, the light-transmitting head is made of crystal, glass or transparent resin.

[0012] Preferably, the deflection and reflection device includes a polarizer and a deflection reference cone, the deflection reference cone is installed in the deflection cavity, the polarizer is provided with a swing groove adapted to the deflection reference cone, the deflection magnetic device is provided with a limit column for limiting the polarizer, and after the deflection magnetic device is energized, the distance between the limit column and the polarizer is less than the depth of the swing groove, the polarizer is made of a permanent magnet, a reflector is installed on the polarizer, and a plurality of grooves are formed on the side of the polarizer away from the reflector, the top of the groove is covered with a sealing plate, and the density of the polarizer is equal to the density of industrial-grade white oil.

[0013] Preferably, the deflection magnetic device includes a deflection mounting plug and two deflection electromagnets, the two deflection electromagnets are mounted on the deflection mounting plug, and the two deflection electromagnets correspond to two ends of the deflection reflective device respectively.

[0014] The beneficial effects of the present invention are: The fixing device is installed on the barrel to realize the installation of the barrel, and the extrusion device is installed on the barrel to realize the extrusion of the photocurable resin. The light-transmitting head is installed at the end of the barrel, and several light sources are installed on the light-transmitting head. The photocurable resin is cured after being irradiated by the light source. A deflection cavity is provided on the light-transmitting head, and the deflection and reflective device can be deflected and installed in the deflection cavity. The deflection and reflective device is made of a permanent magnet to avoid rust and facilitate posture control by magnetic force. A reflector is installed on the deflection and reflective device. The deflection magnetic device is installed on the deflection cavity. The deflection magnetic device blocks the deflection cavity. The deflection cavity is filled with industrial-grade white oil. The deflection and reflective device has a buoyancy cavity to realize the floating of the deflection and reflective device in the industrial-grade white oil, preventing the gravity of the deflection and reflective device from interfering with the control of the deflection magnetic device. The light irradiated by the light source passes through the light-transmitting head and the deflection cavity in the light-transmitting head until the light beam reaches the preset material outflow channel position in the light-transmitting head.

[0015] An aperture controller is provided at the output end of the material outflow channel. The aperture controller is installed at the end of the material outflow channel through interference fit. Two elastic control plates are formed on the lower side of the aperture controller and are bent toward the inside of the material outflow channel. Each elastic control plate is made of transparent plastic. The light beam passes through each elastic control plate and shines onto the material outflow channel. The deflection magnetic device pushes the deflection reflective device to deflect, thereby realizing the change of the curing area and achieving adjustable control of the printing accuracy.

[0016] The light beam passes through the elastic control plate and irradiates the flowing photocurable resin, which reduces the fluidity of the photocurable resin. When the irradiation angle of the light beam is controlled, the area of ​​the photocurable resin irradiated in the elastic control plate changes. When the area of ​​the area irradiated by the photocurable resin increases, the resistance encountered by the elastic control plate increases, causing the opening of the elastic control plate to increase. When the area of ​​the area irradiated by the photocurable resin decreases, the resistance encountered by the elastic control plate decreases, causing the opening of the elastic control plate to decrease, thereby achieving adjustable control of printing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention.

[0018] Figure 2 It is a schematic cross-sectional view of the structure of the present invention.

[0019] Figure 3 for Figure 2 Enlarged schematic diagram of point A in the middle.

[0020] Figure 4 for Figure 2 Enlarged schematic diagram of point B in the middle.

[0021] Description of reference numerals: 1. Extrusion device; 11. Deflection chamber; 2. Fixing device; 21. Clamping nut; 22. Anti-loosening washer; 3. Barrel; 4. Translucent head; 41. Material outflow channel; 5. Deflection reflector; 51. Polarizer; 511. Buoyancy chamber; 512. Swinging slot; 52. Deflection reference cone; 6. Deflection magnetic device; 61. Deflection mounting plug; 62. Deflection electromagnet; 63. Limiting column; 7. Light source; 8. Aperture controller; 81. Elastic control piece. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings: like Figure 1 — Figure 4 As shown, this embodiment provides a light-curing 3D printing nozzle, including an extruder 1, a fixing device 2, a barrel 3, a light-transmitting head 4, a deflection and reflection device 5 and a deflection magnetic device 6. The fixing device 2 is installed on the barrel 3 to realize the installation of the barrel 3. The extruder 1 is installed on the barrel 3 to realize the extrusion of the light-curing resin. The light-transmitting head 4 is installed at the end of the barrel 3. A plurality of light sources 7 are installed on the light-transmitting head 4. The light-curing resin is cured after being irradiated by the light source 7. This is a prior art and will not be described in detail here. A deflection cavity 11 is provided on the light-transmitting head 4. The deflection and reflection device 5 can be deflected and installed in the deflection cavity 11. The deflection and reflection device The device 5 is made of a permanent magnet to prevent rust and facilitate posture control through magnetic force. A reflector is installed on the deflection and reflection device 5. The deflection magnetic device 6 is installed on the deflection cavity 11. The deflection magnetic device 6 seals the deflection cavity 11. The deflection cavity 11 is filled with industrial-grade white oil. The deflection and reflection device 5 has a buoyancy cavity 511 to achieve the floating of the deflection and reflection device 5 in the industrial-grade white oil, preventing the gravity of the deflection and reflection device 5 itself from interfering with the control of the deflection magnetic device 6. The light irradiated by the light source 7 passes through the light-transmitting head 4 and the deflection cavity 11 in the light-transmitting head 4 until the light beam reaches the preset material outflow channel 41 position in the light-transmitting head 4.

[0023] An aperture controller 8 is provided at the output end of the material outflow channel 41. The aperture controller 8 is installed at the end of the material outflow channel 41 through an interference fit. Two elastic control sheets 81 are formed on the lower side of the aperture controller 8 and are bent toward the inner side of the material outflow channel 41. Each elastic control sheet 81 is made of transparent plastic. The light beam passes through each elastic control sheet 81 and irradiates the material outflow channel 41. The deflection magnetic device 6 pushes the deflection reflective device 5 to deflect, thereby realizing the change of the curing area and achieving the control of printing accuracy.

[0024] The light beam passes through the elastic control plate 81 and is irradiated onto the flowing photocurable resin, and the fluidity of the photocurable resin is reduced. When the irradiation angle of the light beam is controlled, the area of ​​the photocurable resin irradiated in the elastic control plate 81 changes. When the area of ​​the area irradiated by the photocurable resin increases, the resistance encountered by the elastic control plate 81 increases, causing the opening of the elastic control plate 81 to increase. When the area of ​​the area irradiated by the photocurable resin decreases, the resistance encountered by the elastic control plate 81 decreases, causing the opening of the elastic control plate 81 to decrease, thereby realizing adjustable control of printing accuracy.

[0025] Specifically, the extrusion device 1 includes an extrusion motor and a screw. The screw is rotatably installed in the barrel 3. The extrusion motor is installed on the barrel 3. The extrusion motor is connected to the screw for transmission to realize the extrusion of the photocurable resin. This is the existing technology and will not be repeated here.

[0026] Specifically, the extrusion device 1 includes a linear motor and a piston. The piston slides along the barrel 3. The linear motor is installed on the barrel 3 and the piston is installed at the output end of the linear motor to realize the extrusion of the photocurable resin. This is the existing technology and will not be repeated here.

[0027] Specifically, the barrel 3 is provided with a thread on the outside, and the fixing device 2 includes two clamping nuts 21 and two anti-loosening washers 22. The two clamping nuts 21 are installed on the outside of the barrel 3 through a thread pair, and the two anti-loosening washers 22 are located between the two clamping nuts 21 to realize the installation of the barrel 3.

[0028] Specifically, the barrel 3 and the light-transmitting head 4 are interference-fitted, and the light-curing resin in the barrel 3 is extruded to the light-transmitting head 4 and then extruded from the light-transmitting head 4 .

[0029] Specifically, the light-transmitting head 4 is made of crystal, glass or transparent resin to avoid blocking the light source 7 .

[0030] Specifically, the deflection reflective device 5 includes a polarizer 51 and a deflection reference cone 52. The deflection reference cone 52 is installed in the deflection cavity 11. The polarizer 51 is provided with a swing groove 512 adapted to the deflection reference cone 52. The deflection magnetic device 6 is provided with a limit column 63 for limiting the polarizer 51. The limit column 63 is used to support the polarizer 51 after the deflection magnetic device 6 is powered off to prevent the polarizer 51 from falling. When the deflection magnetic device 6 is powered on, the distance between the limit column 63 and the polarizer 51 is less than the depth of the swing groove 512. The limit column 63 prevents the swing groove 512 of the polarizer 51 from being separated from the deflection reference cone 52. The polarizer 51 is made of a permanent magnet. A reflector is installed on the polarizer 51. The deflection of the polarizer 51 changes the irradiation area of ​​the light source 7 and changes the printing accuracy. In order to form a buoyancy cavity 511, a plurality of grooves are formed on the side of the polarizer 51 away from the reflector. The top of the groove is covered with a sealing plate, so that a buoyancy cavity 511 is formed in the middle of the polarizer 51, so that the density of the polarizer 51 is equal to the density of industrial-grade white oil.

[0031] Specifically, the deflection magnetic device 6 includes a deflection mounting plug 61 and two deflection electromagnets 62. The two deflection electromagnets 62 are installed on the deflection mounting plug 61. The two deflection electromagnets 62 correspond to the two ends of the deflection reflective device 5 respectively. When the two deflection electromagnets 62 generate magnetic force separately, they push the polarizer 51 away from the electromagnet, so that the polarizer 51 is deflected. When the two deflection electromagnets 62 work separately, the polarizer 51 produces two deflection angles, so that the material outflow channel 41 of the present application has two extrusion diameters, thereby realizing the control of printing accuracy.

[0032] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which shall fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Light-curing 3D printing nozzle, characterized by: The invention comprises an extrusion device, a fixing device, a barrel, a light-transmitting head, a deflection and reflection device and a deflection magnetic device. The fixing device is installed on the barrel, the extrusion device is installed on the barrel, the light-transmitting head is installed at the end of the barrel, a plurality of light sources are installed on the light-transmitting head, a deflection cavity is provided on the light-transmitting head, the deflection and reflection device can be deflected and installed in the deflection cavity, the deflection and reflection device is made of a permanent magnet, a reflector is installed on the deflection and reflection device, the deflection magnetic device is installed on the deflection cavity, and the deflection magnetic device blocks the deflection The deflection cavity is filled with industrial-grade white oil, the deflection reflective device has a buoyancy cavity, the transparent head is preset with a material outflow channel, the output end of the material outflow channel is provided with a caliber controller, the caliber controller is installed at the end of the material outflow channel by interference fit, and two elastic control sheets bent toward the inside of the material outflow channel are formed on the lower side of the caliber controller, each of the elastic control sheets is made of transparent plastic, and the light beam passes through each elastic control sheet and irradiates the material outflow channel, and the deflection magnetic device drives the deflection reflective device to deflect.

2. The light-curing 3D printing nozzle according to claim 1, characterized in that: The extrusion device includes an extrusion motor and a screw. The screw is rotatably installed in the barrel. The extrusion motor is installed on the barrel. The extrusion motor is transmission-connected to the screw.

3. The light-curing 3D printing nozzle according to claim 1, characterized in that: The extrusion device includes a linear motor and a piston. The piston slides along the barrel. The linear motor is installed on the barrel, and the piston is installed at the output end of the linear motor.

4. The light-curing 3D printing nozzle according to claim 1, characterized in that: The barrel is provided with threads on the outside, and the fixing device includes two clamping nuts and two anti-loosening washers. The two clamping nuts are installed on the outside of the barrel through a thread pair, and the two anti-loosening washers are located between the two clamping nuts.

5. The light-curing 3D printing nozzle according to claim 1, characterized in that: The barrel and the light transmitting head are interference fit.

6. The light-curing 3D printing nozzle according to claim 1, characterized in that: The light-transmitting head is made of crystal, glass or transparent resin.

7. The light-curing 3D printing nozzle according to claim 1, characterized in that: The deflection and reflection device includes a polarizer and a deflection reference cone. The deflection reference cone is installed in a deflection cavity. The polarizer is provided with a swing groove adapted to the deflection reference cone. The deflection magnetic device is provided with a limit column for limiting the polarizer. After the deflection magnetic device is energized, the distance between the limit column and the polarizer is less than the depth of the swing groove. The polarizer is made of a permanent magnet. A reflector is installed on the polarizer. Several grooves are formed on the side of the polarizer away from the reflector. The top of the groove is covered with a sealing plate. The density of the polarizer is equal to the density of industrial-grade white oil.

8. The light-curing 3D printing nozzle according to claim 1, characterized in that: The deflection magnetic device includes a deflection mounting plug and two deflection electromagnets. The two deflection electromagnets are mounted on the deflection mounting plug, and the two deflection electromagnets correspond to two ends of the deflection reflective device respectively.

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