A 3D UV printing dual-nozzle protection structure

Abstract

The application relates to the field of 3D uv printing technology, in particular to a 3D uv printing double-nozzle protection structure, which comprises a shell assembly, a nozzle bottom plate, a back plate and a circumferential side plate, the back plate and the circumferential side plate are connected to the nozzle bottom plate to form a containing space, a nozzle assembly is located in the containing space and comprises a first ink capsule piece, a second ink capsule piece and two nozzle pieces, the two nozzle pieces are arranged side by side on the nozzle bottom plate and are respectively connected to the first ink capsule piece and the second ink capsule piece, a shielding structure comprises a driving assembly and a shielding assembly, the driving assembly is located in the containing space, the shielding assembly comprises a connecting piece and a shielding piece, one end of the connecting piece is connected to the driving assembly, the other end of the connecting piece is exposed to the circumferential side plate and is connected to the shielding piece, and the shielding piece is used for reciprocating shielding of the two nozzle pieces based on the driving of the driving assembly. The application can realize separate and individual printing of the two nozzles and can alternately protect the two nozzles.

Description

Technical Field

[0001] This application relates to the field of 3D UV printing technology, and in particular to a dual-nozzle protection structure for 3D UV printing. Background Technology

[0002] Significant progress has been made in the field of 3D UV printing technology in recent years. With its ability to quickly and accurately create objects of complex shapes, 3D UV printing has demonstrated immense application value in various fields such as industrial manufacturing, medicine, and construction. It breaks the limitations of traditional manufacturing methods, enabling rapid transformation from design to physical object, significantly shortening product development cycles, reducing production costs, and providing strong support for innovation across industries. As 3D UV printing technology continues to advance, its application scope is also expanding, playing a crucial role in promoting the transformation and upgrading of the manufacturing industry.

[0003] In 3D UV printing, when dual printheads are involved, they need to be protected to ensure proper operation and print quality. Traditional dual printhead protection in 3D UV printing typically uses a fixed protective cover structure to completely enclose both printheads, preventing contamination and damage from external dust and debris. However, this method lacks flexibility; the two printheads may obstruct the printing process, and they cannot print independently, making alternating protection impossible. Other methods involve placing simple baffles around each printhead for partial protection. However, these simple baffles have limited coverage and cannot provide comprehensive and effective protection, nor do they offer alternating protection. Therefore, these methods lack the ability to alternate protection when the two printheads are printing individually; they only provide uniform protection for both printheads simultaneously. Utility Model Content

[0004] The purpose of this application is to overcome the above-mentioned technical problems and provide a 3D UV printing dual-nozzle protection structure that enables two nozzles to print separately and to provide alternating protection for the two nozzles.

[0005] This application discloses a dual-nozzle protection structure for 3D UV printing, which specifically adopts the following solution: A 3D UV printing dual-nozzle protection structure includes: a housing assembly comprising a nozzle base plate, a back plate, and a peripheral side plate, wherein the back plate and the peripheral side plate are connected around the nozzle base plate to form an accommodating space; a nozzle assembly located in the accommodating space, comprising a first ink sac, a second ink sac, and two nozzle components, wherein the two nozzle components are arranged side by side on the nozzle base plate and are respectively connected to the first ink sac and the second ink sac; and a shielding structure comprising a driving assembly and a shielding assembly, wherein the driving assembly is located in the accommodating space, and the shielding assembly comprises a connector and a shielding member, wherein one end of the connector is connected to the driving assembly, and the other end is exposed on the peripheral side plate and connected to the shielding member, and the shielding member, driven by the driving assembly, is used to reciprocate to shield the two nozzle components.

[0006] By adopting the above technical solution, the printhead base plate, back plate, and peripheral side plates of the housing assembly are connected to form an accommodating space, in which the printhead assembly can be placed, providing a certain degree of protection for the printhead assembly and preventing external dust, debris, etc. from directly contaminating and damaging the printhead assembly. The two printhead components of the printhead assembly are respectively connected to the first ink cartridge component and the second ink cartridge component, enabling the jetting and printing of different inks. The drive component of the shielding structure drives the shielding component to reciprocate and alternately shield the two printhead components through the connector, which changes the problems of traditional fixed protective cover structures lacking flexibility, hindering printing operations, and not being able to print separately or alternately. It also avoids the defects of simple baffles with limited protection range, difficulty in providing comprehensive and effective protection, and lack of alternate protection capability. It can achieve alternate protection when the two printheads print separately, improving the flexibility and effectiveness of protection.

[0007] Optionally, the drive assembly includes: a drive member, with a drive rod at one end fixed to the back plate, and one end of the connector sleeved on the drive rod, moving with the rotation of the drive rod; a support member, with one end fixed to the nozzle base plate, and the other end used to support the end of the drive member away from the back plate; and a slide rail member, disposed on both sides of the nozzle base plate, horizontally arranged with the drive rod, for the two ends of the shielding member to be sleeved, and for the end of the connector away from the drive rod to be sleeved.

[0008] By adopting the above technical solution, the drive rod of the drive component is fixed on the back plate, and the connecting piece is sleeved on the drive rod, which allows the connecting piece to move with the rotation of the drive rod, thereby driving the movement of the shielding piece to achieve alternating shielding of the two nozzles; one end of the support piece is fixed on the nozzle base plate, and the other end supports the end of the drive component away from the back plate, which can ensure the stability of the drive component and prevent its shaking from affecting the normal driving of the shielding piece; the slide rail is set on both sides of the nozzle base plate and is set horizontally with the drive rod, so that the two ends of the shielding piece and the end of the connecting piece away from the drive rod can be sleeved, which can provide guidance for the movement of the shielding piece, making the reciprocating alternating shielding action of the shielding piece more precise and smooth.

[0009] Optionally, it also includes: a limiting component comprising: a limiting piece, one end of which is fixed to the support member; and a limiting switch disposed on the connector for sensing the limiting piece.

[0010] By adopting the above technical solution, one end of the limiting piece is fixed on the support, making the position of the limiting piece stable; the limit switch is set on the connector to sense the limiting piece, which can accurately control the movement range of the connector, avoid excessive movement of the blocking part, ensure that the blocking structure can accurately and reliably block the two nozzles in a reciprocating alternating manner, and improve the working stability and protection effect of the 3D UV printing dual nozzle protection structure.

[0011] Optionally, the printhead assembly further includes: a first ink sac holder abutting against one of the printhead components, the first ink sac holder having a plurality of slots relative to the plurality of first ink sac components; and a second ink sac holder abutting against another printhead component, the second ink sac holder having a plurality of slots relative to the plurality of second ink sac components.

[0012] By adopting the above technical solution, a first ink sac support and a second ink sac support are set. The first ink sac support abuts against a printhead component, and multiple slots are set on it relative to multiple first ink sac components. This can separate and position the first ink sac components, avoid mutual interference, and ensure that the first ink sac components stably supply ink to the printhead component. The second ink sac support abuts against another printhead component, and multiple slots are set on it relative to multiple second ink sac components. This can separate and position the second ink sac components, avoid mutual interference, and ensure that the second ink sac components stably supply ink to the printhead component. This ensures the stability and reliability of the entire printhead assembly and helps to improve the quality and efficiency of 3D UV printing.

[0013] Optionally, both the first ink sac holder and the second ink sac holder are provided with a through-hole component for respectively through-hole fixing on one side of the two printhead components, and the first ink sac holder and the second ink sac holder respectively abut against the two printhead components and are fixed on the printhead base plate, wherein the two printhead components are provided with a matching through-hole groove corresponding to the through-hole component.

[0014] By adopting the above technical solution, the inserts are respectively inserted and fixed in the insert grooves on one side of the two nozzle components, and the first ink sac bracket and the second ink sac bracket respectively abut against the two nozzle components and are fixed on the nozzle base plate. This allows the first ink sac bracket and the second ink sac bracket to be stably connected to the nozzle components and fixed on the nozzle base plate, thereby enhancing the stability of the nozzle assembly and ensuring the overall stability and reliability of the 3D UV printing dual nozzle protection structure.

[0015] Optionally, the groove is provided with an abutment fastener for elastically abutting the first ink cartridge or the second ink cartridge.

[0016] By adopting the above technical solution, in the dual-nozzle protection structure for 3D UV printing, the slotted abutment fasteners elastically abut against the first or second ink sac component, making the ink sac component more securely installed in the printhead assembly and preventing ink sac component movement from affecting print quality. Furthermore, the first and second ink sac supports abut against the printhead component, and the through-hole component is fixed to the side of the printhead component. On this basis, the abutment fasteners further ensure the stability of the ink sac component, thus facilitating the smooth operation of 3D UV printing and improving print accuracy and quality.

[0017] Optionally, the first ink cartridge holder and the second ink cartridge holder are respectively provided with inserts, and the two printheads are respectively provided with limit slots corresponding to the inserts.

[0018] By adopting the above technical solution, in the 3D UV printing dual-nozzle protection structure, inserts are provided on the first ink sac bracket and the second ink sac bracket, and corresponding limiting slots are provided on the nozzle component, which can make the connection between the first ink sac bracket and the second ink sac bracket and the nozzle component more stable, and further ensure the stability of the nozzle assembly.

[0019] Optionally, it further includes: a curing component, located in the accommodating space and connected to the back plate, and disposed on the same side of the first ink cartridge and the second ink cartridge; a transmission groove is provided on the printhead base plate corresponding to the curing component, wherein the curing component is used to cure the ink ejected by the two printheads through the transmission groove.

[0020] By adopting the above technical solution, a curing component is set in the dual-nozzle protection structure of 3D UV printing, and it is connected to the back plate and set on the same side of the first ink sac and the second ink sac. The nozzle base plate is provided with a corresponding transmission groove, which can realize the separate curing of ink sprayed by the two nozzles, which helps to improve the quality and efficiency of 3D UV printing. Moreover, the curing component is located in the accommodating space and is reasonably arranged with other components, making the overall structure more compact.

[0021] Optionally, the curing assembly includes: a lamp support plate, a first UV lamp, and a second UV lamp. One side of the lamp support plate is connected to the back plate and is located on the same side of the first ink capsule and the second ink capsule. The first UV lamp and the second UV lamp are arranged side by side at an angle on the side of the lamp support plate away from the peripheral side plate, and two corresponding transmission grooves are provided.

[0022] By adopting the above technical solution, one side of the lamp support plate is connected to the back plate and located on the same side of the first ink cartridge and the second ink cartridge, which can provide a stable installation position for the first UV lamp and the second UV lamp and ensure their installation stability; the first UV lamp and the second UV lamp are arranged side by side at an angle on the side of the lamp support plate away from the peripheral side plate, and two corresponding transmission grooves are arranged, which can effectively cure the ink sprayed by the two printheads, improve printing quality and efficiency.

[0023] Optionally, the lamp bracket plate includes a first bracket and a second bracket. One side of the first bracket is connected to the back plate, and the second bracket is connected to the other side of the first bracket away from the back plate. Adjustment holes are provided opposite to the first bracket and the second bracket. Screws pass through the adjustment holes to adjust the space of the first bracket and the second bracket for accommodating the first UV lamp and the second UV lamp.

[0024] By adopting the above technical solution, the lamp bracket plate is configured as a first bracket and a second bracket, with one side of the first bracket connected to the back plate, enabling the lamp bracket plate to be stably connected to the back plate; the second bracket connects to the other side of the first bracket away from the back plate, which helps to form a complete lamp bracket structure to accommodate the first UV lamp and the second UV lamp; the first bracket and the second bracket are provided with adjustment holes opposite each other, and the space for accommodating the first UV lamp and the second UV lamp can be adjusted by screws passing through the adjustment holes, which can be flexibly adjusted according to the size of the first UV lamp and the second UV lamp, improving the adaptability of the lamp bracket plate to UV lamps of different specifications, and ensuring the stable installation and normal use of the UV lamps.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The printhead base plate, back plate, and peripheral side plates of the housing assembly are connected to form an accommodating space, which can house the printhead assembly and provide a certain degree of protection for the printhead assembly, preventing external dust, debris, etc. from directly contaminating and damaging the printhead assembly; the two printhead components of the printhead assembly are respectively connected to the first ink cartridge component and the second ink cartridge component, which can realize the jetting and printing of different inks; the drive component of the shielding structure drives the shielding component to reciprocate and alternately shield the two printhead components through the connector, which can realize alternating protection when the two printheads print separately, improving the flexibility and effectiveness of protection; 2. One end of the limiting piece is fixed to the support, making the position of the limiting piece stable; the limit switch is set on the connector to sense the limiting piece, which can accurately control the movement range of the connector, avoid excessive movement of the shielding part, ensure that the shielding structure can accurately and reliably shield the two nozzles, and improve the working stability and protection effect of the 3D UV printing dual nozzle protection structure. 3. In the dual-nozzle protection structure for 3D UV printing, the slotted design features abutment fasteners that elastically abut against the first or second ink sac component. This ensures a more stable installation of the ink sac component within the printhead assembly, preventing it from shifting and affecting print quality. The first and second ink sac supports abut against the printhead component, while through-hole components are fixed to the side of the printhead component. These abutment fasteners further guarantee the stability of the ink sac component, thus facilitating smooth 3D UV printing and improving print accuracy and quality. 4. A curing component is set in the dual-nozzle protection structure of 3D UV printing, and it is connected to the back plate and set on the same side of the first ink sac and the second ink sac. This allows the ink sprayed by the two nozzles to be cured separately, which helps to improve the quality and efficiency of 3D UV printing. Moreover, the curing component is located in the accommodating space and is reasonably arranged with other components, making the overall structure more compact. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of a 3D UV printing dual-nozzle protection structure disclosed in an embodiment of this application; Figure 2 for Figure 1 A partial structural schematic diagram of a dual-nozzle protection structure for 3D UV printing is disclosed. Figure 3 for Figure 1 A partially exploded structural diagram of a 3D UV printing dual-nozzle protective structure; Figure 4 for Figure 1 A three-dimensional structural diagram of a dual-nozzle protection structure for 3D UV printing from another angle; Figure 5 for Figure 1 A partially exploded structural diagram of a 3D UV printing dual-nozzle protective structure; Figure 6 for Figure 1 A schematic diagram of the structure in which the nozzle component abuts against the first ink sac support in a 3D UV printing dual-nozzle protection structure is disclosed. Figure 7 for Figure 1 An exploded structural diagram of the curing component in a 3D UV printing dual-nozzle protective structure.

[0027] Explanation of reference numerals in the attached figures: 10. Housing assembly; 101. Accommodating space; 11. Printhead base plate; 111. Transmission groove; 12. Back plate; 13. Peripheral side plate; 20. Printhead assembly; 21. First ink cartridge assembly; 22. Second ink cartridge assembly; 23. Printhead assembly; 231. Through slot; 232. Limiting slot; 24. First ink cartridge bracket; 241. Partition groove; 242. Through piece; 243. Abutment fastener; 244. Insertion piece; 25. Second ink cartridge bracket; 30. Mask 31. Baffle structure; 31. Drive assembly; 311. Drive component; 3111. Drive rod; 312. Support component; 313. Slide rail component; 32. Shielding assembly; 321. Connector; 322. Shielding component; 40. Limiting assembly; 41. Limiting piece; 42. Limit switch; 50. Curing assembly; 51. Lamp bracket plate; 511. First bracket; 512. Second bracket; 513. Adjustment hole; 52. First UV lamp; 53. Second UV lamp. Detailed Implementation

[0028] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to and includes any or all possible combinations of one or more of the listed items.

[0029] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0030] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0031] See Figure 1 , Figure 2 and Figure 3 This application discloses a 3D UV printing dual-nozzle protection structure, including a housing assembly 10, a nozzle assembly 20, and a shielding structure 30. The housing assembly 10 forms an accommodating space 101 to provide a mounting base for other components. The nozzle assembly 20 is located in the accommodating space 101 and performs printing operations. The shielding structure 30, based on a drive, reciprocates and alternately shields the two nozzle components 23 of the nozzle assembly 20, so as to provide targeted alternating protection for one of the two nozzles according to printing needs, avoiding external dust, debris, etc. from contaminating and damaging the unused nozzles, while improving the flexibility of printing operations.

[0032] See also Figure 4 The housing assembly 10 includes a nozzle base plate 11, a back plate 12, and peripheral side plates 13. The nozzle base plate 11 is typically made of rigid plastic or metal, possessing a certain strength and stability to provide reliable support for other components. The back plate 12 and peripheral side plates 13 surround and connect to the nozzle base plate 11, forming a relatively enclosed accommodating space 101. The back plate 12 and peripheral side plates 13 can be fixedly connected to the nozzle base plate 11 by welding, bolting, or other methods.

[0033] The printhead assembly 20 is located in the accommodating space 101 and includes a first ink sac assembly 21, a second ink sac assembly 22, and two printhead assemblies 23. The two printhead assemblies 23 are arranged side-by-side on the printhead base plate 11 and are respectively connected to the first ink sac assembly 21 and the second ink sac assembly 22. Multiple first ink sac assemblies 21 and 22 are provided, and all are made of flexible materials, such as rubber or plastic, for storing ink. The printhead assemblies 23 can be understood as common 3D UV printing printheads, with a precise nozzle structure that accurately ejects the ink from the ink sac. The first ink sac assembly 21 and the second ink sac assembly 22 are connected to the printhead assemblies 23 via pipes, which can be made of plastic or rubber to ensure smooth ink flow.

[0034] The shielding structure 30 includes a drive assembly 31 and a shielding assembly 32. The drive assembly 31 is located in the accommodating space 101, and the shielding assembly 32 includes a connector 321 and a shielding member 322. One end of the connector 321 is connected to the drive assembly 31, and the other end is exposed on the peripheral side plate 13 and connected to the shielding member 322. The shielding member 322, driven by the drive assembly 31, is used to reciprocate and alternately shield the two nozzles 23.

[0035] The drive assembly 31 includes a drive component 311, a support component 312, and a slide rail component 313. The drive component 311 can be a motor, with one end of a drive rod 3111 fixed to the back plate 12. One end of a connecting component 321 is sleeved on the drive rod 3111 and moves with the rotation of the drive rod 3111. The motor selection can be determined according to actual needs, such as power and speed. One end of the support component 312 is fixed to the nozzle base plate 11, and the other end supports the end of the drive component 311 away from the back plate 12. The support component 312 is a metal part, such as... Figure 2 The structure shown serves to stabilize the drive component 311. The slide rails 313 are positioned on both sides of the nozzle base plate 11, horizontally aligned with the drive rod 3111, and are used to accommodate both ends of the shielding component 322 and the end of the connecting component 321 furthest from the drive rod 3111. The slide rails 313 can be metal or plastic guide rails, providing guidance for the movement of the shielding component 322 and the connecting component 321.

[0036] The shield 322 is a baffle made of plastic or metal, possessing a certain strength and wear resistance, with a shape and structure as follows: Figure 4 As shown. The connector 321 is made of metal or plastic, and its connection with the drive rod 3111 and the shield 322 can be achieved by using a fitting screw.

[0037] The printhead assembly 20 also includes a first ink cartridge holder 24 and a second ink cartridge holder 25. The first ink cartridge holder 24 abuts against a printhead component 23, and the first ink cartridge holder 24 has multiple slots 241 relative to multiple first ink cartridge components 21. The second ink cartridge holder 25 abuts against another printhead component 23, and similarly, the second ink cartridge holder 25 has multiple slots 241 relative to multiple second ink cartridge components 22. The first ink cartridge holder 24 and the second ink cartridge holder 25 can be made of plastic or metal. The slots 241 separate different ink cartridge components to prevent mutual interference.

[0038] See Figure 3 and Figure 5 To increase structural stability, through-hole members 242 are provided on both the first ink cartridge support 24 and the second ink cartridge support 25. These members are used to pass through and fix to one side of the two printhead components 23, and respectively abut against the two printhead components 23 to fix them to the printhead base plate 11. Corresponding through-hole grooves 231 are provided on the two printhead components 23 corresponding to the through-hole members 242. The through-hole members 242 are two protruding edges on the ink cartridge support, which limit and fix the ink cartridge support and the printhead component 23 by passing through the through-hole grooves 231.

[0039] Each slot 241 is provided with an abutment fastener 243 for elastically abutting each first ink cartridge 21 or second ink cartridge 22. The abutment fastener 243 can be an integral elastic fastener, or it can be replaced with a spring sheet or a rubber pad, which can ensure that the ink cartridge is stably placed in the slot 241 and prevent it from shaking.

[0040] See also Figure 6 The first ink cartridge holder 24 and the second ink cartridge holder 25 are each provided with a plurality of inserts 244, and the two printhead components 23 are each provided with a plurality of limiting slots 232 corresponding to the inserts 244. The inserts 244 are as follows: Figure 3 As shown, the ink cartridge holder has an integrated fastener, which is inserted into the limiting slot 232 to further position and fix the ink cartridge holder and the printhead 23.

[0041] Further, see Figure 2 , Figure 3 and Figure 4The 3D UV printing dual-nozzle protection structure also includes a curing component 50, located in the accommodating space 101 and connected to the back plate 12. It is positioned on the same side of the first ink capsule 21 and the second ink capsule 22, and a corresponding transmission groove 111 is provided on the nozzle base plate 11 to cure the ink ejected by the two nozzles 23. The curing component 50 accelerates the ink curing speed and improves print quality.

[0042] The curing assembly 50 includes a lamp holder plate 51, a first UV lamp 52, and a second UV lamp 53. One side of the lamp holder plate 51 is connected to the back plate 12 and is located on the same side as the first ink cartridge 21 and the second ink cartridge 22. The first UV lamp 52 and the second UV lamp 53 are arranged side-by-side at an angle on the side of the lamp holder plate 51 away from the peripheral side plate 13, and two transmission slots 111 are provided corresponding to the first UV lamp 52 and the second UV lamp 53. The lamp holder plate 51 can be made of metal or plastic and has certain heat dissipation performance. Additionally, LED beads for indicating the curing status are provided on the sides of the first UV lamp 52 and the second UV lamp 53, and corresponding circular holes for projecting light from the LED beads are provided on the lamp holder plate 51.

[0043] See Figure 7 The lamp bracket plate 51 includes a first bracket 511 and a second bracket 512. One side of the first bracket 511 is connected to the back plate 12, and the second bracket 512 is connected to the other side of the first bracket 511 away from the back plate 12. Adjustment holes 513 are provided opposite to the first bracket 511 and the second bracket 512. Screws passing through the adjustment holes 513 adjust the space in which the first UV lamp 52 and the second UV lamp 53 are housed. By adjusting the position of the screws in the adjustment holes 513, the relative position of the first bracket 511 and the second bracket 512 can be changed, thereby adjusting the installation space of the first UV lamp 52 and the second UV lamp 53 to accommodate UV lamps of different specifications.

[0044] The working principle of this 3D UV printing dual-nozzle protection structure is as follows: Upon initialization, the first driving component 311 drives the connecting component 321 to move the blocking component 322 between the two nozzle components 23; If a specified instruction is received from the printhead component 23, one of the specified printhead components 23 will be used as the target printhead to perform the printing operation, and the corresponding component such as the first UV lamp 52 will be controlled to work. The first drive component 311 drives the connector 321 to move the shielding component 322 to shield the other printhead component 23. Upon receiving the switching command from the printhead component 23, the printing operation of the current target printhead is stopped. The first drive component 311 drives the connector 321 to move the blocking component 322 to block the printhead component 23. At the same time, another printhead component 23 is used as the target printhead to perform the printing operation, and the corresponding component, such as the second UV lamp 53, is controlled to work.

[0045] The implementation principle of this embodiment is as follows: The 3D UV printing dual-nozzle protection structure of this embodiment achieves effective protection and flexible printing for the 3D UV printing dual nozzles through the coordinated work of its components. The housing component 10 forms a closed accommodating space 101, providing a stable working environment for the nozzle assembly 20 and other components. The two nozzles 23 of the nozzle assembly 20 are respectively connected to different ink cartridges, enabling printing of different colors or materials. The driving component 31 of the shielding structure 30 drives the shielding component 322 to reciprocate and alternately shield the two nozzles 23, providing targeted protection for the nozzles according to printing needs and preventing contamination of the nozzles when not in use. The curing component 50 accelerates the ink curing speed and improves print quality. Compared with traditional 3D UV printing dual-nozzle protection methods, this structure has better protection and higher flexibility, meeting different printing needs and making a significant improvement and contribution to existing technology.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A 3D UV printing dual-nozzle protection structure, characterized in that, include: The housing assembly (10) includes a nozzle base plate (11), a back plate (12) and a peripheral side plate (13), the back plate (12) and the peripheral side plate (13) being connected around the nozzle base plate (11) to form an accommodating space (101). The printhead assembly (20) is located in the accommodating space (101) and includes a first ink sac (21), a second ink sac (22) and two printheads (23). The two printheads (23) are arranged side by side at an angle on the printhead base plate (11) and are respectively connected to the first ink sac (21) and the second ink sac (22). The shielding structure (30) includes a drive assembly (31) and a shielding assembly (32). The drive assembly (31) is located in the accommodating space (101). The shielding assembly (32) includes a connector (321) and a shielding member (322). One end of the connector (321) is connected to the drive assembly (31), and the other end is exposed on the peripheral side plate (13) and connected to the shielding member (322). The shielding member (322) is driven by the drive assembly (31) and is used to reciprocate to shield the two nozzles (23).

2. The 3D UV printing dual-nozzle protection structure according to claim 1, characterized in that, The driving component (31) includes: The driving member (311) has a driving rod (3111) at one end fixed on the back plate (12), and the connecting member (321) is sleeved on the driving rod (3111) at one end and moves with the rotation of the driving rod (3111). The support member (312) has one end fixed to the nozzle base plate (11) and the other end used to support the end of the drive member (311) away from the back plate (12); The slide rail (313) is disposed on both sides of the nozzle base plate (11) and is horizontally disposed with the drive rod (3111). It is used for the two ends of the shielding member (322) to be respectively fitted, and for the end of the connector (321) away from the drive rod (3111) to be fitted.

3. The 3D UV printing dual-nozzle protection structure according to claim 2, characterized in that, Also includes: The limiting component (40) includes: The limiting piece (41) is fixed at one end to the support member (312); A limit switch (42) is provided on the connector (321) for sensing the limit piece (41).

4. The 3D UV printing dual-nozzle protection structure according to claim 1, characterized in that, The nozzle assembly (20) also includes: The first ink sac holder (24) abuts against one of the printhead components (23), and the first ink sac holder (24) has a plurality of slots (241) provided on the first ink sac components (21) relative to the plurality of first ink sac components (21). The second ink sac holder (25) abuts against another printhead component (23), and the second ink sac holder (25) is provided with a plurality of the partitions (241) relative to the plurality of the second ink sac components (22).

5. The 3D UV printing dual-nozzle protection structure according to claim 4, characterized in that, Both the first ink sac bracket (24) and the second ink sac bracket (25) are provided with a through-hole component (242) for respectively through-hole fixing on one side of the two printhead components (23), and the first ink sac bracket (24) and the second ink sac bracket (25) respectively abut against the two printhead components (23) and are fixed on the printhead base plate (11), wherein the two printhead components (23) are provided with a matching through-hole groove (231) corresponding to the through-hole component (242).

6. The 3D UV printing dual-nozzle protection structure according to claim 5, characterized in that, The groove (241) is provided with an abutment fastener (243) for elastically abutting the first ink sac (21) or the second ink sac (22).

7. The 3D UV printing dual-nozzle protection structure according to claim 5, characterized in that, The first ink sac holder (24) and the second ink sac holder (25) are respectively provided with inserts (244), and the two printheads (23) are respectively provided with limit slots (232) corresponding to the inserts (244).

8. The 3D UV printing dual-nozzle protection structure according to claim 1, characterized in that, Also includes: The curing component (50) is located in the accommodating space (101) and connected to the back plate (12), and is disposed on the same side of the first ink sac (21) and the second ink sac (22). A transmission groove (111) is provided on the printhead base plate (11) corresponding to the curing component (50), wherein the curing component (50) cures the ink sprayed by the two printheads (23) through the transmission groove (111).

9. The 3D UV printing dual-nozzle protection structure according to claim 8, characterized in that, The curing assembly (50) includes: a lamp support plate (51), a first UV lamp (52) and a second UV lamp (53). The lamp support plate (51) is connected to the back plate (12) on one side and is located on the same side of the first ink capsule (21) and the second ink capsule (22). The first UV lamp (52) and the second UV lamp (53) are arranged side by side at an angle on the side of the lamp support plate (51) away from the peripheral side plate (13). There are two corresponding transmission grooves (111).

10. The 3D UV printing dual-nozzle protection structure according to claim 9, characterized in that, The lamp bracket plate (51) includes a first bracket (511) and a second bracket (512). One side of the first bracket (511) is connected to the back plate (12), and the second bracket (512) is connected to the other side of the first bracket (511) away from the back plate (12). An adjustment hole (513) is provided opposite to the first bracket (511) and the second bracket (512). The space for the first bracket (511) and the second bracket (512) to accommodate the first UV lamp (52) and the second UV lamp (53) is adjusted by screws passing through the adjustment hole (513).

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