A UV-3D composite printing device

Abstract

The invention discloses a UV-3D composite printing device, which relates to the technical field of glass processing and color printing, and comprises a 3D printer main body. Two protective covers are slidably arranged on the working table of the printer. When the two protective covers are slidably spliced ​​and abutted together, the entire working table of the printer can be wrapped and protected, which can prevent foreign objects from hitting and dust from entering, and preliminarily reduce the dust residue on the working table, and also preliminarily reduce the influence of air cooling and heat dissipation on the color printing effect. An extrusion contact plate that can be lifted and lowered is arranged in the bottom chassis of the printer, which can increase the stability of the entire printer, so that the lifting and lowering of the extrusion contact plate and the sliding splicing of the two protective covers are synchronously performed, and air can be blown in the opposite direction from the inner side of the filter net of the side wall of the bottom chassis, so that a number of dust and impurities originally blocked on the outer side of the filter net are blown away from the filter hole, thereby playing the role of automatic cleaning, and there is no need to manually clean the filter net, and the device has the characteristic of being easy to use.

Description

Technical Field

[0001] The invention relates to the technical field of glass processing and color printing, and in particular to a UV-3D composite printing device. Background Art

[0002] At present, deep processing of glass surface is mainly through screen printing and surface texture lamination. The single color presents a simple effect, and it is impossible to superimpose a deeper visual effect due to performance mismatch. Because the amount of ink in normal screen printing cannot be accurately controlled, it is well known that some products need to maintain the original shape of the pattern during screen printing, resulting in poor ink layer coverage. For multi-color printing, complex and cumbersome color matching is required, which increases the scrap rate of the product and the cost accordingly. 3D printing superimposed with UV nano-imprinting technology can well solve the problem of single color and no texture of the pattern, reducing the difficulty of operation and scrap rate.

[0003] The invention patent with application publication number CN 109910297 A records in its beneficial effect section that “products with different parameter requirements can be printed on the same 3D printing device, and products with different parameter requirements can be printed on the same 3D printing device, meeting the process requirements of variable materials, variable layer thickness, and variable particle size, and realizing the printing of diversified and complex structure products”. Although it has good 3D printing effects for products with different parameters, it is easy to have the following technical problems when using it. This is because the UV-3D composite printing equipment requires the environment to reduce dust as much as possible when working. Therefore, when it needs air cooling after color printing on glass, a filter will be set to intercept and filter the dust in the air. Dust, but after the filter has intercepted and filtered dust for a long time, it is necessary to regularly clean the dust and impurities remaining on the surface to prevent these dust and impurities from blocking the mesh holes and causing poor air intake. The air cooling operation cannot be completed normally during the dust cleaning process, so it is necessary to stop the machine for cleaning, which in turn affects the normal use of the printing equipment. In addition, in order to ensure the stable operation of the printing equipment and accurate printing, its bottom is flat on the ground, using a larger contact area to obtain better support stability, but this is not conducive to the mobile transportation of the printing equipment. Once the printing equipment needs to be moved, large mechanical equipment such as trailers or cranes must be used to participate in the transfer, which results in inconvenience in movement and transportation. Summary of the invention

[0004] The purpose of the present invention is to provide a UV-3D composite printing device to solve the technical problems mentioned in the background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A UV-3D composite printing device comprises a 3D printer body, wherein universal wheels are installed at four corners of the bottom end of the 3D printer body, a synchronous transmission mechanism is installed in the 3D printer body, and the synchronous transmission mechanism comprises a driving motor, wherein the driving motor is fixedly installed at one end of the 3D printer body, the output end of the driving motor is connected to a driving shaft, and the driving shaft extends into the 3D printer body, and the outer shaft wall of the driving shaft is fixedly sleeved with two first transmission gears and a second transmission gear, the outer ring walls of the two first transmission gears are meshed and connected with a first transmission rack, and the four first transmission racks are vertically fixedly installed with a support slide bar away from one end of the driving shaft, the outer ring wall of the second transmission gear is meshed and installed with a second transmission rack, the bottom of the second transmission rack is fixedly connected to a lifting extrusion rod, and four extrusion contact plates are installed at the bottom end of the lifting extrusion rod, and two protective covers are slidably installed on the working table of the 3D printer body, and the bottom ends of the two protective covers are fixedly connected to the top ends of the corresponding two support slide bars.

[0007] As a further solution of the present invention: air inlets are provided on two opposite outer side walls of the bottom chassis of the 3D printer body, and first filters are embedded and installed in the two air inlets; four dust removal ports are provided on the work surface of the 3D printer body through the inner cavity of the bottom chassis, and one-way exhaust valves are embedded and installed in the four dust removal ports; and filter elements are embedded and filled in the remaining installation space between the four one-way exhaust valves and the corresponding upper cavity ports of the dust removal ports.

[0008] As a further solution of the present invention: two cooling fans are also installed in the bottom chassis of the 3D printer body, the input ends of the two cooling fans are respectively arranged opposite to the corresponding first filter positions, the output ends of the two cooling fans are connected to the cooling air ducts, the ends of the two cooling air ducts are extended to the working components of the working table of the 3D printer body, two strip slides are opened on the working table of the 3D printer body, and the bottoms of the two protective covers are respectively slidably installed in the corresponding strip slides.

[0009] As a further solution of the present invention: the two first transmission racks meshing with the outer ring wall of the first transmission gear have the same specifications and are symmetrically distributed about the corresponding first transmission gear; the four outer side walls of the lower bottom of the lifting extrusion rod are vertically fixed with supporting bent rods; the bottom ends of the four supporting bent rods are vertically fixed with extrusion contact plates; the four extrusion contact plates are flush with the height of the four universal wheels and are all set in contact with the ground.

[0010] As a further solution of the present invention: two springs are installed between the top ends of the four extrusion resistance plates and the lower bottom of the 3D printer body, and a number of the springs are provided with a limiting shaft cylinder and a limiting shaft rod. A number of the limiting shaft cylinders are respectively and vertically fixedly installed at the top center position of the corresponding extrusion resistance plates, and a number of the limiting shaft rods are all vertically fixedly installed at the lower bottom of the 3D printer body. A number of the limiting shaft rods are respectively slidably inserted into the corresponding inner cylinder cavities of the limiting shaft cylinders, and the outer diameters of the limiting shaft rods are consistent with the inner diameters of the inner cylinder cavities of the corresponding limiting shaft cylinders, and the inner cylinder cavities of the limiting shaft cylinders are provided with air inlet and outlet holes through the outer cylinder wall.

[0011] As a further solution of the present invention: the two protective covers are both designed with openings on the sides facing each other, and the two protective covers are spliced ​​together to cooperate with the work surface of the 3D printer body to wrap and protect the relevant printing components of the 3D printer body, and installation cavities are opened on both sides of the two protective covers, and fixed installation group exhaust fans are embedded in the two installation cavities, and second filters can be detachably installed at the cavity openings far away from each other of the two installation cavities.

[0012] As a further solution of the present invention: the upper cavity top and the lower cavity bottom of the two installation cavities are both penetrated by the corresponding outer wall of the protective cover to open a strip-shaped hole, the two opposite inner walls of the two installation cavities are both provided with a limiting slide groove, the two second filter screens are wrapped around an installation frame, the two installation frames respectively penetrate the corresponding two strip-shaped holes and are sealed at the cavity opening of the corresponding installation cavity, the two opposite outer walls of the two installation frames are respectively slidably installed in the corresponding limiting slide grooves, the top ends of the two installation frames are fixedly installed with baffles, the top ends of the two baffles are vertically fixedly installed with installation blocks, and a rotating handle is rotatably installed between the two installation blocks.

[0013] As a further solution of the present invention: two square exhaust ducts are installed in the inner cavity of the chassis at the bottom of the 3D printer body, and the two square exhaust ducts are respectively arranged between the corresponding heat dissipation fan and the first filter screen, and air inlets are opened on both sides of the two square exhaust ducts. A number of exhaust heads are arranged in the two air inlets, and connecting air ducts are connected between the exhaust heads and between the outermost exhaust heads and the inner cavity of the square exhaust ducts. The top ends of the two square exhaust ducts are connected with one-way return air ducts, and the two one-way return air ducts are connected to the lower cavity opening of the corresponding dust removal port.

[0014] As a further solution of the present invention: a square exhaust cavity is opened in each of the two square exhaust ducts, and the two one-way return air ducts are connected to a number of exhaust head input ends through the square exhaust cavity and a number of connecting air duct cavities, and the several exhaust heads are distributed in a rectangular array, and the output ends of the several exhaust heads are arranged relative to the corresponding first filter screen positions.

[0015] As a further solution of the present invention: two supporting mechanisms are installed on two opposite outer sides of the main working table of the 3D printer, four of the supporting mechanisms include supporting trusses, the four supporting trusses are vertically fixedly installed on the outer sides of the main working table of the 3D printer, the tops of the four supporting trusses are provided with auxiliary slide grooves, the four auxiliary slide grooves are respectively arranged opposite to and connected with the corresponding strip slide grooves, the ends of the four supporting trusses are fixedly installed with limit blocks, and L-shaped support rods are fixedly installed between the bottom ends of the four supporting trusses and the side walls of the main working table of the 3D printer.

[0016] Beneficial effects of the present invention:

[0017] First, two protective covers are slidably arranged on the work surface of the printer. When the two protective covers are slid and spliced ​​together, the entire work surface of the printer can be wrapped and protected, which can prevent foreign objects from hitting and dust from entering, and initially reduce the dust residue on the work surface, and also initially reduce the impact of air cooling on the color printing effect. An extrusion contact plate that can be raised and lowered is arranged in the bottom chassis of the printer. When the extrusion contact plate contacts the ground, the stability of the entire printer can be increased. Transmission structures such as transmission gears and transmission racks are arranged in the bottom chassis of the printer, so that The lifting and lowering of the extrusion contact plate is synchronized with the sliding splicing of the two protective covers, that is, when the entire printer needs to be moved and transported, the two protective covers are spliced ​​together, which has the functions of anti-collision protection and reducing dust entry, and the four extrusion contact plates are no longer in contact with the ground when they are raised, and the weight of the entire printer is supported by only four universal wheels, so it is convenient to move and transport the entire printer. When the printer is working normally, the two protective covers are separated so that the work surface is opened, which does not affect the normal color printing of the glass, and the four extrusion contact plates are lowered to contact the ground, which can increase the stability of the entire printer;

[0018] Secondly, when the two protective covers are spliced ​​together, the outside air flow can be blown onto the work surface by starting the exhaust fan. At this time, the work surface is closed and can only enter the inner cavity of the bottom chassis from the four dust removal ports. However, the four dust removal ports are filled with filter elements, thereby further preventing dust from entering the bottom chassis, and the air entering the bottom chassis will eventually be discharged from several exhaust heads, and then can be blown in the opposite direction from the inside of the filter on the side wall of the bottom chassis, blowing away some dust and impurities originally blocked on the outside of the filter from the filter holes, thereby achieving the effect of automatic cleaning, and there is no need to manually clean the filter, which is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0020] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the installation structure of the synchronous transmission mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram of the installation structure of the extrusion resistance plate of the present invention;

[0023] Figure 4 This is a schematic diagram of the installation structure of the air inlet cover of the present invention;

[0024] Figure 5 This is a schematic diagram of the internal installation structure of the bottom chassis of the 3D printer body of the present invention;

[0025] Figure 6 This is a schematic diagram of the installation structure of the square exhaust pipe of the present invention;

[0026] Figure 7 This is a front cross-sectional structural schematic diagram of a square exhaust duct of the present invention;

[0027] Figure 8 It is a schematic diagram of the supporting mechanism structure of the present invention.

[0028] In the figure:

[0029] 1. 3D printer body; 11. Air inlet; 12. First filter; 13. Universal wheel; 14. Dust removal port; 15. One-way exhaust valve; 16. Filter element; 17. Cooling fan; 18. Cooling air duct; 19. Strip slide;

[0030] 2. Synchronous transmission mechanism; 21. Driving motor; 22. Driving shaft; 23. First transmission gear; 24. First transmission rack; 25. Support slide bar; 26. Second transmission gear; 27. Second transmission rack; 28. Lifting and extruding rod; 29. ​​Supporting bending rod; 210. Extrusion contact plate; 211. Spring;

[0031] 3. Protective cover; 31. Installation cavity; 32. Strip jack; 33. Limiting slide groove; 34. Exhaust fan; 35. Installation frame; 36. Second filter screen; 37. Baffle; 38. Installation block; 39. Rotating handle;

[0032] 4. Square exhaust duct; 41. Air inlet; 42. Exhaust head; 43. Connecting air duct; 44. Square exhaust cavity; 45. One-way return air duct;

[0033] 5. Support mechanism; 51. Support truss; 52. Auxiliary slide; 53. Limit stopper; 54. L-shaped support rod. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] like Figure 1-8 As shown, a UV-3D composite printing device includes a 3D printer body 1. Universal wheels 13 are installed at the four corners of the bottom end of the 3D printer body 1 to facilitate flexible movement and steering. In particular, when the device is loaded into a carriage when leaving the factory, a synchronous transmission mechanism 2 is installed in the 3D printer body 1. The synchronous transmission mechanism 2 includes a drive motor 21. The drive motor 21 is fixedly installed at one end of the 3D printer body 1. The output end of the drive motor 21 is connected to a drive shaft 22. The drive shaft 22 extends into the 3D printer body 1. The outer shaft wall of the drive shaft 22 is fixedly covered with two first transmission gears 23 and a second transmission gear 26. The outer ring walls of the two first transmission gears 23 are meshed and connected to the first Transmission rack 24, four first transmission racks 24 are vertically fixedly installed with support slide bars 25 at one end away from the driving shaft 22, the shapes of the support slide bars 25 are different, but the height of the top ends is flush, ensuring that the connected protective cover 3 slides stably and reliably, the outer ring wall of the second transmission gear 26 is meshed with the second transmission rack 27, the bottom of the second transmission rack 27 is fixedly connected to the lifting and extruding rod 28, and four extrusion contact plates 210 are installed at the bottom end of the lifting and extruding rod 28. Two protective covers 3 are slidably installed on the working table of the 3D printer body 1, and the bottom ends of the two protective covers 3 are fixedly connected to the top ends of the corresponding two support slide bars 25, ensuring that the two protective covers 3 slide synchronously and at the same speed, and can always seal the entire working table;

[0036] like Figure 1 and Figure 5As shown, what is particularly special is that air inlets 11 are provided on two opposite outer walls of the bottom chassis of the 3D printer body 1, and first filters 12 are embedded and installed in the two air inlets 11. Four dust removal ports 14 are provided on the work surface of the 3D printer body 1 through the inner cavity of the bottom chassis, and one-way exhaust valves 15 are embedded and installed in the four dust removal ports 14. The purpose is that when the heat dissipation fan 17 is blowing normally, air will not directly enter the top of the work surface from the dust removal port 14, so that the air flow is concentrated and transported to the air outlet for air-cooling processing of glass. The four one-way exhaust valves 15 and the remaining installation space of the upper cavity of the corresponding dust removal port 14 are embedded and filled with filter elements 16, and the filter element 16 is arranged above the work surface. It is convenient to replace, and the normal color printing of the glass is not affected during the replacement process. Two heat dissipation fans 17 are also installed in the bottom chassis of the 3D printer body 1. The input ends of the two heat dissipation fans 17 are respectively arranged relative to the corresponding first filter 12 to ensure that the air path is unobstructed. The output ends of the two heat dissipation fans 17 are connected to the heat dissipation duct 18. The ends of the two heat dissipation ducts 18 are extended to the working components of the working table of the 3D printer body 1, that is, the air cooling and heat dissipation vents for the glass. Two strip slides 19 are opened on the working table of the 3D printer body 1. The bottoms of the two protective covers 3 are respectively slidably installed in the corresponding strip slides 19, and the support slide rods 25 penetrate the corresponding strip slides 19 and are connected to the bottoms of the corresponding protective covers 3.

[0037] like Figure 2-3 As shown, it is particularly special that the two first transmission racks 24 meshing with the outer ring wall of the first transmission gear 23 have the same specifications and are symmetrically distributed about the corresponding first transmission gear 23. The four outer side walls of the lower bottom of the lifting and extruding rod 28 are vertically fixed with support bent rods 29, and the bottom ends of the four support bent rods 29 are vertically fixed with extrusion contact plates 210. The four extrusion contact plates 210 are flush with the four universal wheels 13 and are all set in contact with the ground to ensure that they can contact the ground at the same time, thereby increasing the support stability of the 3D printer body 1. Two springs 211 are installed between the tops of the four extrusion contact plates 210 and the lower bottom of the 3D printer body 1, and the springs 211 can increase Strong connection stability, and does not affect the normal lifting and lowering activities of the extrusion and contact plate 210. A number of springs 211 are provided with limited shaft cylinders and limited shaft rods. A number of limited shaft cylinders are respectively vertically fixedly installed at the top center position of the corresponding extrusion and contact plate 210, and a number of limited shaft rods are vertically fixedly installed at the bottom of the 3D printer body 1. A number of limited shaft rods are respectively slidably inserted into the corresponding inner cylinder cavity of the limited shaft cylinder, so that the lifting and lowering of the spring 211, that is, the lifting and lowering of the extrusion and contact plate 210 is more stable and reliable, and the outer diameter of the number of limited shaft rods is consistent with the inner diameter of the inner cylinder cavity of the corresponding limited shaft cylinder. The inner cylinder cavity of the number of limited shaft cylinders is provided with air inlet and outlet holes through the outer cylinder wall, which plays a certain buffering and pressure relief role;

[0038] like Figure 4 As shown, what is particularly special is that the two protective covers 3 have an opening design on the opposite sides. The two protective covers 3 are spliced ​​together to cooperate with the work surface of the 3D printer body 1 to wrap and protect the relevant printing components of the 3D printer body 1, so as to play the role of anti-collision, waterproof, dustproof and fireproof. The two protective covers 3 are installed on the opposite sides of the two air inlet covers. The two sides of the two air inlet covers are penetrated with installation cavities 31, and the two installation cavities 31 are embedded with fixed installation group exhaust fans 34. The second filter nets 36 can be detachably installed at the cavity openings away from the two installation cavities 31. The upper cavity tops and lower cavity bottoms of the two installation cavities 31 are penetrated through the corresponding outer wall of the protective cover 3 to open a strip-shaped plug hole 32. The two opposite inner walls of the two installation cavities 31 are provided with a limited sliding groove 33. The two second filter nets 36 are wrapped with an installation frame 35. The two installation frames 35 respectively penetrate the corresponding two strip plug holes 32 and are sealed in the corresponding installation cavities. At the cavity opening of 31, the entire second filter 36 plays a role in intercepting and filtering dust in the backwash air path. However, since the second filter 36 is arranged on the surface, it is convenient to disassemble and clean, and its cleaning frequency does not need to be as high as the first filter 12. The two opposite outer walls of the two mounting frames 35 are slidably installed in the corresponding limiting slide grooves 33, and the tops of the two mounting frames 35 are fixed with baffles 37. When the two mounting frames 35 are respectively inserted into the corresponding two bar-shaped jacks 32 and the air quota is in the corresponding mounting cavity 31, the bottom ends of the baffles 37 at the top of the two mounting frames 35 are set against the top of the corresponding protective cover 3, so that the corresponding mounting frame 35 is forced to limit and fix, which facilitates the disassembly and installation of the mounting frame 35, that is, the second filter 36. The tops of the two baffles 37 are vertically fixed with mounting blocks 38, and the rotating handle 39 is rotatably installed between the two mounting blocks 38, which is convenient for the disassembly and installation of the second filter 36.

[0039] like Figure 4-6As shown, it is particularly special that two square exhaust pipes 4 are installed in the inner cavity of the bottom chassis of the 3D printer body 1, and the two square exhaust pipes 4 are respectively arranged between the corresponding heat dissipation fans 17 and the first filter screen 12. Air inlets 41 are opened on both sides of the two square exhaust pipes 4. The remaining space in the air inlet 41 allows the air entering the bottom chassis from the first filter screen 12 to be extracted by the heat dissipation fan 17 without affecting the wind path. A plurality of exhaust heads 42 are arranged in the two air inlets 41, and the plurality of exhaust heads 42 and the outermost plurality of exhaust heads 42 are connected to the inner cavity of the square exhaust pipe 4 by connecting air. Tube 43, the top ends of the two square exhaust ducts 4 are connected with a one-way return air duct 45, the two one-way return air ducts 45 are connected with the lower cavity of the corresponding dust removal port 14, and the two square exhaust ducts 4 are provided with a square exhaust cavity 44. The two one-way return air ducts 45 are connected with the input ends of the several exhaust heads 42 through the square exhaust cavity 44 and the inner cavities of the several connecting air ducts 43. The several exhaust heads 42 are distributed in a rectangular array, and the output ends of the several exhaust heads 42 are arranged relative to the corresponding first filter screen 12, which can directly concentrate the airflow and spray it on the inner mesh of the first filter screen 12, and has the characteristics of cleaning and high efficiency;

[0040] like Figure 8 As shown, what is particularly special is that two supporting mechanisms 5 are installed on two opposite outer sides of the working table of the 3D printer body 1, and the four supporting mechanisms 5 all include supporting trusses 51. The four supporting trusses 51 are all vertically fixedly installed on the outer sides of the working table of the 3D printer body 1, and the tops of the four supporting trusses 51 are all provided with auxiliary slide grooves 52. The four auxiliary slide grooves 52 are respectively arranged opposite to and connected with the corresponding strip slide grooves 19. When the protective cover 3 moves from the strip slide groove 19 to the auxiliary slide groove 52, the two protective covers 3 are forced to move away from each other. The ends of the four supporting trusses 51 are all fixedly installed with limit blocks 53 to prevent the protective cover 3 from moving beyond the effective thread. L-shaped support rods 54 are fixedly installed between the bottom ends of the four supporting trusses 51 and the side walls of the working table of the 3D printer body 1 to improve the supporting stability of the supporting trusses 51 for the protective cover 3.

[0041] Working principle of the present invention:

[0042] When the 3D printer body 1 needs to be moved and transported, the drive motor 21 is started, thereby driving the drive shaft 22 to rotate. The drive shaft 22 will simultaneously drive the second transmission gear 26 and the two first transmission gears 23 to rotate, thereby driving the corresponding two first transmission racks 24 to move linearly, thereby driving the corresponding support slide bar 25 and the top protective cover 3 to slide. At this time, the two protective covers 3 are close to each other until they are spliced ​​together, and the relevant color printing mechanism on the top working table of the 3D printer body 1 is wrapped up to prevent other objects from hitting and damaging the relevant adopted mechanism on the top working table of the 3D printer body 1 during transportation, and it can also prevent water and dust from entering the top working table of the 3D printer body 1, which has a preliminary dust reduction effect, and the rotation of the second transmission gear 26 will drive the second transmission rack 27 to rise, thereby driving the lifting extrusion rod 28 and the four support bending rods 29 and the extrusion contact plate 210 to rise. At this time, the four extrusion contact plates 210 are no longer in contact with the ground, and the weight of the entire 3D printer body 1 is only supported by the four universal wheels 13, so it is convenient to move and transport the entire 3D printer body 1;

[0043] When the 3D printer body 1 needs to be started to print color on the glass, the driving motor 21 is started, and finally the two protective covers 3 slide away from each other until they slide into the auxiliary slide grooves 52 of the corresponding support trusses 51, respectively. At this time, the work surface on the 3D printer body 1 is not blocked, which is convenient for glass feeding and unloading, and also convenient for normal color printing of the glass. The rotation of the second transmission gear 26 will drive the second transmission rack 27 to descend, and then push the corresponding lifting extrusion rod 28 to descend, and through the four support bending rods 29, the corresponding extrusion contact plate 210 is lowered until it conflicts with the ground, which can increase the stability of the entire 3D printer body 1;

[0044] In the process of air cooling and reverse dust removal, when the two protective covers 3 are separated to perform glass color printing normally, the finished glass needs to be cooled by air. In order to avoid blowing dust onto the surface of the finished glass, a first filter 12 needs to be provided to reduce dust adhesion without affecting the air cooling path. However, the first filter 12 will filter and intercept dust for a long time, which will cause the surface mesh to be blocked by dust and impurities, thus affecting the normal air cooling path. In this regard, when the two protective covers 3 are spliced ​​together, the exhaust fan 34 can be started to blow the outside air flow onto the work surface. At this time, the work surface is closed and can only be filtered out from The four dust removal ports 14 enter the inner cavity of the bottom chassis, but the four dust removal ports 14 are filled with filter elements 16 (embedded directly on the work surface for easy replacement), thereby further preventing dust from entering the bottom chassis, and the clean air entering the bottom chassis will eventually be discharged from a number of exhaust heads 42, and then can be blown in the opposite direction from the inside of the first filter 12 on the side wall of the bottom chassis, blowing away a number of dust and impurities originally blocked on the outside of the first filter 12 from the filter holes, thereby achieving an automatic cleaning effect, eliminating the need for manual cleaning of the filter, and being easy to use.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A UV-3D composite printing device, comprising a 3D printer body (1), wherein universal wheels (13) are installed at four corners of the bottom of the 3D printer body (1), characterized in that: A synchronous transmission mechanism (2) is installed in the 3D printer body (1), and the synchronous transmission mechanism (2) comprises a drive motor (21), the drive motor (21) is fixedly installed at one end of the 3D printer body (1), the output end of the drive motor (21) is connected to a drive shaft (22), the drive shaft (22) extends into the 3D printer body (1), the outer shaft wall of the drive shaft (22) is fixedly sleeved with two first transmission gears (23) and a second transmission gear (26), and the outer ring walls of the two first transmission gears (23) are meshedly connected to the first transmission rack ( 24), the four first transmission racks (24) are vertically fixedly installed with a support slide bar (25) at one end away from the driving shaft (22), the second transmission gear (26) is meshed with the outer ring wall to install a second transmission rack (27), the bottom of the second transmission rack (27) is fixedly connected to a lifting extrusion rod (28), and four extrusion contact plates (210) are installed at the bottom end of the lifting extrusion rod (28), and two protective covers (3) are slidably installed on the working table of the 3D printer body (1), and the bottom ends of the two protective covers (3) are fixedly connected to the top ends of the corresponding two support slide bars (25); The two first transmission racks (24) meshed with the outer ring wall of the first transmission gear (23) have the same specifications and are symmetrically distributed about the corresponding first transmission gear (23); the four outer side walls of the lower bottom of the lifting and squeezing rod (28) are vertically fixed with supporting bent rods (29); the bottom ends of the four supporting bent rods (29) are vertically fixed with squeezing contact plates (210); the four squeezing contact plates (210) are flush with the four universal wheels (13) in height and are all arranged in contact with the ground; Two springs (211) are installed between the top ends of the four extrusion contact plates (210) and the bottom end of the 3D printer body (1), and a plurality of springs (211) are provided with a limiting shaft cylinder and a limiting shaft rod. The limiting shaft cylinders are respectively fixedly installed vertically at the center of the top ends of the corresponding extrusion contact plates (210), and the limiting shaft rods are respectively fixedly installed vertically at the bottom end of the 3D printer body (1). The limiting shaft rods are respectively slidably inserted into the inner cylinder cavities of the corresponding limiting shaft cylinders, and the outer diameters of the limiting shaft rods are consistent with the inner diameters of the inner cylinder cavities of the corresponding limiting shaft cylinders. The inner cylinder cavities of the limiting shaft cylinders are provided with air inlet and outlet holes through the outer cylinder wall. The two protective covers (3) are both designed with openings on the sides facing each other. The two protective covers (3) are spliced ​​together to cooperate with the work surface of the 3D printer body (1) to wrap and protect the relevant printing components of the 3D printer body (1). The two protective covers (3) are both equipped with air inlet covers on the sides away from each other. The two sides of the two air inlet covers are penetrated by installation cavities (31). The two installation cavities (31) are embedded with fixed installation group exhaust fans (34). The second filter screen (36) can be detachably installed at the cavity openings away from each other of the two installation cavities (31).

2. A uv-3D composite printing device according to claim 1, characterized in that: The two opposite outer side walls of the bottom chassis of the 3D printer body (1) are each provided with an air inlet (11), and a first filter (12) is adapted and embedded in the two air inlets (11). The working surface of the 3D printer body (1) is provided with four dust removal ports (14) penetrating the inner cavity of the bottom chassis, and one-way exhaust valves (15) are embedded and installed in the four dust removal ports (14). A filter element (16) is embedded and filled in the remaining installation space between the four one-way exhaust valves (15) and the upper cavity openings of the corresponding dust removal ports (14).

3. A uv-3D composite printing device according to claim 2, characterized in that: Two cooling fans (17) are also installed in the bottom chassis of the 3D printer body (1), the input ends of the two cooling fans (17) are respectively arranged opposite to the positions of the corresponding first filter screens (12), the output ends of the two cooling fans (17) are both connected to cooling air ducts (18), the ends of the two cooling air ducts (18) are both extended into the working components of the working table of the 3D printer body (1), the working table of the 3D printer body (1) is provided with two strip-shaped slide grooves (19), and the bottoms of the two protective covers (3) are respectively slidably installed in the corresponding strip-shaped slide grooves (19).

4. A uv-3D composite printing device according to claim 3, characterized in that: The upper cavity top and the lower cavity bottom of the two installation cavities (31) are both penetrated through the outer wall of the corresponding protective cover (3) to open a strip-shaped plug hole (32), and the two opposite inner walls of the two installation cavities (31) are both provided with a limit slide groove (33). The two second filter screens (36) are surrounded by an installation frame (35). The two installation frames (35) respectively penetrate the corresponding two strip-shaped plug holes (32) and are sealed at the cavity opening of the corresponding installation cavity (31). The two opposite outer walls of the two installation frames (35) are respectively slidably installed in the corresponding limit slide groove (33). The top ends of the two installation frames (35) are fixedly installed with baffles (37), and the bottom ends of the two baffles (37) are both set to contact with the top of the corresponding protective cover (3). The top ends of the two baffles (37) are both vertically fixedly installed with installation blocks (38), and a rotating handle (39) is rotatably installed between the two installation blocks (38).

5. A uv-3D composite printing device according to claim 4, characterized in that: Two square exhaust ducts (4) are installed in the inner cavity of the bottom chassis of the 3D printer body (1). The two square exhaust ducts (4) are respectively arranged between the corresponding heat dissipation fan (17) and the first filter (12). Air inlets (41) are opened through both sides of the two square exhaust ducts (4). A plurality of exhaust heads (42) are arranged in the two air inlets (41). A connecting air duct (43) is connected between the plurality of exhaust heads (42) and between the outermost plurality of exhaust heads (42) and the inner cavity of the square exhaust duct (4). The top ends of the two square exhaust ducts (4) are connected with a one-way return air duct (45). The two one-way return air ducts (45) are connected with the lower cavity opening of the corresponding dust removal port (14).

6. A uv-3D composite printing device according to claim 5, characterized in that: The two square exhaust ducts (4) are each provided with a square exhaust cavity (44), and the two one-way return air ducts (45) are both connected to the input ends of the exhaust heads (42) through the square exhaust cavity (44) and the inner cavities of the connecting air ducts (43). The exhaust heads (42) are distributed in a rectangular array, and the output ends of the exhaust heads (42) are each arranged relative to the corresponding first filter screen (12).

7. A uv-3D composite printing device according to claim 6, characterized in that: Two supporting mechanisms (5) are installed on two opposite outer side walls of the working table of the 3D printer body (1), and the four supporting mechanisms (5) each include a supporting truss (51). The four supporting trusses (51) are vertically fixedly installed on the outer side wall of the working table of the 3D printer body (1), and the tops of the four supporting trusses (51) are each provided with an auxiliary slide groove (52). The four auxiliary slide grooves (52) are respectively arranged opposite to and in communication with the corresponding strip slide grooves (19). The ends of the four supporting trusses (51) are each fixedly installed with a limit stopper (53), and an L-shaped supporting rod (54) is fixedly installed between the bottom ends of the four supporting trusses (51) and the side wall of the working table of the 3D printer body (1).

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