Multi-nozzle cooperative 3D liquid material printing equipment
Multi-nozzle collaborative 3D printing equipment achieves collaborative operation of multiple nozzles through an XYZ three-axis moving platform and various fixed structures, solving the problems of frequent interruptions and material cross-contamination in traditional 3D printing equipment, and improving printing efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 天津仁爱学院
- Filing Date
- 2025-06-24
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional 3D printing equipment is equipped with only a single print head, which leads to frequent interruptions, complex operation, cross-contamination of materials, and low printing accuracy and efficiency.
It adopts a multi-printer collaborative design, combining an XYZ three-axis moving platform, an angle adjustment motor, and an electric push rod. Through sliding limit, magnetic locking, and elastic clamping structure, the printheads can be quickly installed and removed. The printed parts are fixed by a vacuum adsorption chamber, enabling multi-printer collaborative operation and dynamic angle adjustment.
It improves printing efficiency and accuracy, reduces material change time, avoids cross-contamination of materials, adapts to printing complex curved surfaces, and reduces maintenance costs and downtime.
Smart Images
Figure CN224256080U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of 3D printing technology, specifically to a multi-nozzle collaborative 3D liquid material printing device. Background Technology
[0002] 3D printing is a rapid prototyping technology that creates three-dimensional objects by layering materials. Based on digital models, it uses materials such as plastics, metals, and ceramics to precisely construct complex structures. This technology is widely used in industrial manufacturing, medical, construction, and education fields, enabling personalized customization and small-batch production, significantly reducing R&D costs and time. 3D printing has driven innovation in manufacturing, providing efficient and flexible solutions for prototyping and product development, and is hailed as a key indicator of the "Third Industrial Revolution."
[0003] Traditional 3D printing equipment typically features only a single printhead. If different colors or materials with different properties are needed during printing, the process must be paused and manual or automatic material changes performed. This design not only leads to frequent interruptions in the printing process, reducing overall production efficiency, but also increases operational complexity, especially in large-scale or multi-material printing tasks.
[0004] Furthermore, since multiple materials share the same printhead, residual material may not be completely removed, easily leading to cross-contamination between different materials. For example, molten plastic at high temperatures may mix with subsequently used metal powder or photosensitive resin, affecting the purity and performance of the materials, thereby reducing the accuracy and strength of the printed parts.
[0005] For example, a rotary multi-nozzle 3D printer provided in the existing Chinese patent document with publication number CN215704113U still has the aforementioned problems. Utility Model Content
[0006] The purpose of this invention is to provide a multi-nozzle collaborative 3D liquid material printing device to solve the problems mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-nozzle collaborative 3D liquid material printing device, including a worktable, an XYZ three-axis moving platform on the worktable, a mounting frame at the mounting end of the XYZ three-axis moving platform, a connecting frame at the bottom end of the mounting frame via a shaft and bearing, an angle adjustment motor on the mounting frame in cooperation with the connecting frame, a mounting plate at the bottom end of the connecting frame, multiple electric push rods at the bottom end of the mounting plate, a mounting seat at the bottom end of each electric push rod, a 3D printing nozzle slidably mounted on each mounting seat, a sliding limiting structure between the side of the 3D printing nozzle and the mounting seat, a magnetic locking structure between the front end of the 3D printing nozzle and the mounting seat, and elastic clamping limiting structures between the two sides of the 3D printing nozzle and the mounting seat.
[0008] The present invention is further configured such that the sliding limiting structure includes limiting slide bars, the limiting slide bars are located on both sides of the 3D printing nozzle, the mounting base is provided with a mounting groove, the inner side wall of the mounting groove is provided with a limiting slide groove, the limiting slide bars and the limiting slide groove are slidably engaged, and the 3D printing nozzle is slidably engaged into the mounting groove through the limiting slide bars and the limiting slide groove. During installation, the limiting slide bars on both sides of the 3D printing nozzle are aligned with the limiting slide groove on the mounting groove and pushed inward, so that the 3D printing nozzle is accurately and stably installed into the mounting groove under the sliding limiting engagement of the limiting slide groove and the limiting slide bar.
[0009] The present invention is further provided that a damping pad is bonded to the surface of the limiting slide groove. The damping pad can improve the sliding friction of the limiting slide bar in the limiting slide groove, thereby achieving friction locking after installation.
[0010] The present invention is further configured such that the magnetic locking structure includes a locking protrusion disposed at the front end of the 3D printing nozzle, a first magnetic block disposed inside the locking protrusion, a locking groove disposed on the inner wall of the mounting groove, and a second magnetic block disposed inside the locking groove. The locking protrusion engages with the inside of the locking groove, and the first magnetic block and the second magnetic block are magnetically attracted to each other. After the 3D printing nozzle is installed into the mounting groove, the locking protrusion at the front end of the 3D printing nozzle carries the first magnetic block and engages with the corresponding locking groove. At the same time, the first magnetic block and the second magnetic block are magnetically attracted to each other, thereby achieving magnetic locking and fixation of the 3D printing nozzle in the mounting groove.
[0011] The present invention is further configured such that the elastic clamping and limiting structure includes a clamping frame, the clamping frame is elastically hinged to the side of the 3D printing nozzle through the cooperation of a shaft and a torsion spring structure, a limiting edge is provided on the mounting base, the bottom end of the clamping frame is engaged with the limiting edge, and a pinching head is provided at the top end.
[0012] The present invention is further configured such that the inner wall of the clamping frame is provided with a locking protrusion, and the side wall of the limiting edge is provided with a locking groove. The locking protrusion and the locking groove are locked together. After the 3D printing nozzle is initially locked and fixed in the mounting groove by the magnetic attraction between the first magnetic block and the second magnetic block, the pinch head on the clamping frame is released, so that the clamping frame is flipped downward under the action of the torsion spring, thereby carrying the locking protrusion to lock into the locking groove on the limiting edge, thereby further realizing the locking and fixing of the 3D printing nozzle in the mounting groove, enhancing the installation stability of the 3D printing nozzle on the mounting base, and at the same time, facilitating the disassembly of the 3D printing nozzle on the mounting base.
[0013] The present invention is further configured such that a placement seat is provided on the worktable, and the placement seat is set on the worktable through the cooperation of a shaft and a bearing. A rotating motor is provided on the worktable in conjunction with the placement seat. During the 3D printing process, the generated product is placed on the placement seat. During the printing process, the rotating motor is started, and the rotating motor can control the placement seat to rotate within a certain angle. Thus, during the printing process, it can cooperate with the 3D printing nozzle above, which can be adjusted at an adjustable angle, and flexibly adjust the printing position and angle of the product according to the printing situation.
[0014] The present invention is further configured such that a vacuum adsorption chamber is provided inside the placement seat, and the vacuum adsorption chamber extends upward to the top of the placement seat and is provided with a vacuum adsorption hole. The vacuum adsorption chamber is connected to a vacuum adsorption device through a flexible tube. During the printing process of 3D products, a vacuum adsorption operation can be performed inside the placement seat by the external vacuum adsorption device, thereby generating a negative pressure adsorption force on the surface of the placement seat. This can improve the placement stability of the 3D printed products during the printing process. The vacuum adsorption device can be a vacuum pump.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] 1. This invention achieves multi-nozzle collaborative operation by setting multiple independently controllable 3D printing nozzles, significantly improving printing efficiency. Traditional single-nozzle equipment requires frequent pauses when switching materials, while the multiple nozzles of this invention can simultaneously carry different materials, reducing wasted material changeover time. Furthermore, each nozzle's extension is individually controlled by an electric push rod, and in conjunction with the XYZ three-axis moving platform and angle adjustment motor, precise control of the spraying position and angle can be achieved, reducing printing errors. The triple fixing method of damping pads, magnetic locking structure, and clamping frame further ensures the stability of the 3D printing nozzles during movement, thereby improving overall printing accuracy and product quality.
[0017] 2. The 3D printing nozzle of this invention adopts a modular design. Through the cooperation of a sliding limiting structure, a magnetic locking structure, and an elastic clamping limiting structure, the nozzle can be quickly installed and removed. Users only need to squeeze the clamping head of the clamping frame to unlock the 3D printing nozzle, without the need for complicated tools, which greatly reduces the time cost of maintenance and replacement. This design is particularly suitable for multi-material printing scenarios, avoiding cross-contamination of materials, while facilitating nozzle cleaning and maintenance, reducing downtime, and improving production efficiency.
[0018] 3. The placement base design of this utility model further optimizes the printing process. Through the vacuum suction chamber and suction holes, the printed parts can be firmly fixed to the surface of the placement base, preventing displacement or tilting during printing. The placement base can also adjust its angle by rotating the motor, working in conjunction with the adjustable-angle multi-nozzle head above to adapt to the printing needs of complex curved surfaces. This dynamic adjustment capability enables the equipment to efficiently complete challenging printing tasks and improve print quality. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of the multi-nozzle collaborative 3D liquid material printing equipment of this utility model;
[0020] Figure 2 This is a schematic diagram of the installation structure of the 3D printing nozzle on the mounting frame in this utility model;
[0021] Figure 3 This is a schematic diagram of the installation structure of the 3D printing nozzle on the mounting base in this utility model;
[0022] Figure 4 This is a schematic diagram of the overall external structure of the 3D printing nozzle in this utility model;
[0023] Figure 5 This is a schematic diagram of the overall structure of the mounting base in this utility model;
[0024] Figure 6 This is a partial cross-sectional view of the installation structure of the seat placed on the workbench in this utility model.
[0025] The components represented by each number in the attached diagram are listed below: 1. Worktable; 2. XYZ three-axis moving platform; 3. Mounting bracket; 4. Connecting bracket; 5. Angle adjustment motor; 6. Mounting plate; 7. Electric push rod; 8. Mounting base; 9. 3D printing nozzle; 10. Limiting slide bar; 11. Mounting groove; 12. Limiting slide groove; 13. Damping pad; 14. Locking protrusion; 15. First magnetic block; 16. Locking groove; 17. Second magnetic block; 18. Clamping frame; 19. Limiting edge; 20. Kneading head; 21. Engaging protrusion; 22. Engaging groove; 23. Placement base; 24. Rotating motor; 25. Vacuum adsorption chamber; 26. Vacuum adsorption hole. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] This utility model provides a technical solution: Please refer to Figures 1-6 A multi-nozzle collaborative 3D liquid material printing device includes a worktable 1, an XYZ three-axis moving platform 2 on the worktable 1, a mounting frame 3 on the mounting end of the XYZ three-axis moving platform 2, a connecting frame 4 at the bottom of the mounting frame 3 via a shaft and bearing, an angle adjustment motor 5 on the mounting frame 3 in conjunction with the connecting frame 4, a mounting plate 6 at the bottom of the connecting frame 4, multiple electric push rods 7 at the bottom of the mounting plate 6, a mounting seat 8 at the bottom of each electric push rod 7, a 3D printing nozzle 9 slidably engaged on the mounting seat 8, a sliding limiting structure between the side of the 3D printing nozzle 9 and the mounting seat 8, a magnetic locking structure between the front end of the 3D printing nozzle 9 and the mounting seat 8, and elastic clamping limiting structures between the two sides of the 3D printing nozzle 9 and the mounting seat 8.
[0028] Please see Figures 1-6 As one implementation of the sliding limiting structure: the sliding limiting structure includes limiting slide bars 10, which are located on both sides of the 3D printing nozzle 9. The mounting base 8 has a mounting groove 11, and the inner side wall of the mounting groove 11 has a limiting slide groove 12. The limiting slide bars 10 and the limiting slide groove 12 slide together. The 3D printing nozzle 9 is slidably engaged into the mounting groove 11 through the limiting slide bars 10 and the limiting slide groove 12. During installation, the limiting slide bars 10 on both sides of the 3D printing nozzle 9 are aligned with the limiting slide groove 12 on the mounting groove 11 and pushed inward. Thus, under the sliding limiting engagement of the limiting slide groove 12 and the limiting slide bar 10, the 3D printing nozzle 9 is accurately and stably installed into the mounting groove 11.
[0029] Please see Figures 1-6 As one embodiment of the limiting slide groove 12: a damping pad 13 is bonded to the surface of the limiting slide groove 12. The damping pad 13 can increase the moving friction of the limiting slide bar 10 in the limiting slide groove 12, thereby achieving friction locking after installation.
[0030] Please see Figures 1-6As one implementation of the magnetic locking structure: the magnetic locking structure includes a locking protrusion 14, which is disposed at the front end of the 3D printing nozzle 9. A first magnetic block 15 is disposed inside the locking protrusion 14. A locking groove 16 is formed on the inner wall of the mounting groove 11. A second magnetic block 17 is disposed inside the locking groove 16. The locking protrusion 14 engages with the inside of the locking groove 16, and the first magnetic block 15 and the second magnetic block 17 are magnetically attracted to each other. After the 3D printing nozzle 9 is installed into the mounting groove 11, the locking protrusion 14 at the front end of the 3D printing nozzle 9 carries the first magnetic block 15 and engages with the corresponding locking groove 16. At the same time, the first magnetic block 15 and the second magnetic block 17 are magnetically attracted to each other, realizing the initial locking and fixing of the 3D printing nozzle 9 in the mounting groove 11.
[0031] Please see Figures 1-6 As one embodiment of the elastic clamping and limiting structure: the elastic clamping and limiting structure includes a clamping frame 18, which is elastically hinged to the side of the 3D printing nozzle 9 through the cooperation of a shaft and a torsion spring structure. A limiting edge 19 is provided on the mounting base 8. The bottom end of the clamping frame 18 and the limiting edge 19 are engaged with each other, and a pinching head 20 is provided at the top end. The elastic hinged installation achieved by the cooperation of the torsion spring and the shaft structure is a conventional technology, which will not be described in detail in this utility model.
[0032] Please see Figures 1-6 As one embodiment of the clamping frame 18: the inner wall of the clamping frame 18 is provided with a locking protrusion 21, and the side wall of the limiting edge 19 is provided with a locking groove 22. The locking protrusion 21 and the locking groove 22 are locked together. After the 3D printing nozzle 9 is initially locked and fixed in the mounting groove 11 by the magnetic attraction between the first magnetic block 15 and the second magnetic block 17, the pinch head 20 on the clamping frame 18 is released, so that the clamping frame 18 flips downward under the action of the torsion spring, thereby carrying the locking protrusion 21 to lock into the locking groove 22 on the limiting edge 19, thereby further realizing the locking and fixing of the 3D printing nozzle 9 on the mounting groove 11, strengthening the installation stability of the 3D printing nozzle 9 on the mounting base 8, and at the same time, facilitating the disassembly of the 3D printing nozzle 9 on the mounting base 8.
[0033] Please see Figures 1-6As one implementation of the worktable 1: a placement seat 23 is provided on the worktable 1. The placement seat 23 is set on the worktable 1 through the cooperation of a shaft and a bearing. A rotary motor 24 is provided on the worktable 1 in conjunction with the placement seat 23. During the 3D printing process, the generated product is placed on the placement seat 23. During the printing process, the rotary motor 24 is started. The rotary motor 24 can control the placement seat 23 to rotate within a certain angle. Thus, during the printing process, it can cooperate with the 3D printing nozzle 9 above, which can adjust the angle of the product, and flexibly adjust the printing position and angle of the product according to the printing situation.
[0034] Please see Figures 1-6 As one implementation of the placement seat 23: a vacuum adsorption chamber 25 is provided inside the placement seat 23, and a vacuum adsorption hole 26 is provided at the top of the placement seat 23. The vacuum adsorption chamber 25 is connected to a vacuum adsorption device through a flexible tube. During the printing process of 3D products, a vacuum adsorption operation can be performed inside the placement seat 23 by the external vacuum adsorption device, thereby generating a negative pressure adsorption force on the surface of the placement seat 23, which can improve the placement stability of the 3D printed products during the printing process.
[0035] In summary, the working principle and workflow of this utility model are as follows:
[0036] This utility model uses a detachable 3D printing nozzle 9, which facilitates the flexible replacement, disassembly, and installation of the 3D printing nozzle 9 during the 3D printing process, thereby improving printing accuracy, avoiding the situation where multiple materials share a single 3D printing nozzle 9, which affects printing quality, reducing material replacement time, and improving printing efficiency.
[0037] When installing the 3D printing nozzle 9, first pinch the pinch head 20 at the top of the clamping frame 18 with your hand, and align the limiting slide strips 10 on both sides of the 3D printing nozzle 9 with the limiting slide grooves 12 on the mounting groove 11. Then push it inward, so that the 3D printing nozzle 9 can be accurately and stably installed into the mounting groove 11 under the sliding limiting cooperation of the limiting slide grooves 12 and the limiting slide strips 10.
[0038] This causes the locking protrusion 14 at the front end of the 3D printing nozzle 9 to engage with the first magnetic block 15 into the corresponding locking groove 16. At the same time, the first magnetic block 15 and the second magnetic block 17 are magnetically attracted to each other, thus achieving the initial locking and fixing of the 3D printing nozzle 9 in the mounting groove 11.
[0039] Afterwards, the pinch head 20 on the clamping frame 18 is released, causing the clamping frame 18 to flip downward under the action of the torsion spring, thereby carrying the engaging protrusion 21 to engage into the engaging groove 22 on the limiting edge 19, thereby further realizing the locking and fixing of the 3D printing nozzle 9 on the mounting groove 11 and strengthening the installation stability of the 3D printing nozzle 9 on the mounting base 8.
[0040] During disassembly, this device can be operated in reverse order of the above steps. Pinch the pinch head 20 on the clamping frame 18 to disengage the locking protrusion 21 from the locking groove 22, and push the 3D printing nozzle 9 outward to disengage the 3D printing nozzle 9 from the mounting groove 11, thereby achieving quick disassembly of the 3D printing nozzle 9.
[0041] When in use, the XYZ three-axis moving platform 2 can flexibly control the discharge position of the 3D printing nozzle 9 on the worktable 1.
[0042] Meanwhile, during use, the angle adjustment motor 5 can be driven to control the rotation of the connecting frame 4, which in turn drives the rotation of the mounting plate 6. The mounting plate 6 then drives the rotation of the electric push rod 7, which in turn controls the corresponding mounting seat 8 to rotate the 3D printing nozzle 9. This allows for flexible adjustment of the ejection angle of the 3D printing nozzle 9 during 3D printing operations.
[0043] This utility model, by setting an electric push rod 7, can independently control the 3D printing nozzle 9 to move outward during 3D printing operations, avoiding the influence of other 3D printing nozzles 9 on the product and improving printing accuracy.
[0044] This invention achieves multi-nozzle collaborative operation by setting multiple 3D printing nozzles 9 that can be flexibly disassembled individually. This reduces the mixing and contamination between different materials during the 3D printing process, improves printing accuracy, and reduces the time wasted on material changes in the prior art, thereby improving 3D printing efficiency.
[0045] In this utility model, the XYZ three-axis moving platform adopts the traditional Cartesian coordinate system structure. In the existing technology, the relevant XYZ three-axis moving platform can be realized by combining various drive structures. This utility model does not limit the specific model and drive method selection.
[0046] The relevant drive components can be linear guides, ball screws, linear motors, etc., and their combination can be linear motors, ball screws and motors, electric slides and other drive components for the X / Y axes, and ball screws, electric push rods, electric cylinders, pneumatic cylinders and other linear drive components for the Z axis.
[0047] For ease of understanding, this utility model provides the following implementation method: A gantry frame is set on the workbench 1. The gantry frame can be movably installed on the workbench 1 along the x-axis by linear drive devices such as linear motors, electric slide rails, and lead screws with motors. At the same time, a slide table is movably installed on the gantry frame along the Y-axis by linear drive structures such as linear motors, electric slide rails, and lead screws with motors. Linear drive components such as lead screws, electric push rods, electric cylinders, and air cylinders are set on the slide table along the z-axis, so that the mounting bracket for connecting the XYZ three-axis moving platform is set at the output end of the z-axis drive component, realizing the XYZ three-axis movement adjustment of the 3D printing nozzle on the workbench.
[0048] In this utility model, the rotation of the components controlled by the motor is achieved by motors with self-locking function. If necessary, they can be used in conjunction with a speed reducer. The connection structure and working principle between the motor and the speed reducer are existing known technologies and will not be described in detail in this utility model.
[0049] In this utility model, other equipment such as UV curing lamps used for curing and cooling in the 3D printing process can be achieved by existing technology, and this utility model will not elaborate on them. In this utility model, the internal structure of the 3D printing nozzle is not modified, and its feeding and discharging are achieved by existing technology, and this utility model will not elaborate on them.
[0050] In this utility model, the controller can control the operation of related electrical components such as motors and electric push rods according to a set program. The specific working process and working principle of this utility model have been described in detail. Based on the above working process and working principle, those skilled in the art should know the specific circuit connection relationship. Furthermore, the circuit connection relationship between related electrical components and the specific driver program are not within the scope of protection of this utility model, and this utility model will not elaborate on them.
[0051] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-nozzle collaborative 3D liquid material printing device, comprising a worktable (1), wherein an XYZ three-axis moving platform (2) is provided on the worktable (1), characterized in that: The XYZ three-axis moving platform (2) is provided with a mounting frame (3) at its mounting end. A connecting frame (4) is provided at the bottom of the mounting frame (3) through the cooperation of a shaft and a bearing. An angle adjustment motor (5) is provided on the mounting frame (3) in cooperation with the connecting frame (4). A mounting plate (6) is provided at the bottom of the connecting frame (4). Multiple electric push rods (7) are provided at the bottom of the mounting plate (6). A mounting seat (8) is provided at the bottom of each electric push rod (7). A 3D printing nozzle (9) is slidably fitted on the mounting seat (8). A sliding limiting structure is provided between the side of the 3D printing nozzle (9) and the mounting seat (8). A magnetic locking structure is provided between the front end of the 3D printing nozzle (9) and the mounting seat (8). An elastic clamping limiting structure is provided between the two sides of the 3D printing nozzle (9) and the mounting seat (8).
2. The multi-nozzle collaborative 3D liquid material printing equipment according to claim 1, characterized in that: The sliding limiting structure includes a limiting slide bar (10), which is located on both sides of the 3D printing nozzle (9). The mounting base (8) has a mounting groove (11), and the inner side wall of the mounting groove (11) has a limiting slide groove (12). The limiting slide bar (10) and the limiting slide groove (12) slide together, and the 3D printing nozzle (9) slides into the mounting groove (11) through the limiting slide bar (10) and the limiting slide groove (12).
3. The multi-nozzle collaborative 3D liquid material printing equipment according to claim 2, characterized in that: The surface of the limiting slide (12) is bonded with a damping pad (13).
4. The multi-nozzle collaborative 3D liquid material printing equipment according to claim 3, characterized in that: The magnetic locking structure includes a locking protrusion (14), which is located at the front end of the 3D printing nozzle (9). A first magnetic block (15) is provided inside the locking protrusion (14). A locking groove (16) is provided on the inner wall of the mounting groove (11). A second magnetic block (17) is provided inside the locking groove (16). The locking protrusion (14) engages with the inside of the locking groove (16), and the first magnetic block (15) and the second magnetic block (17) are magnetically attracted to each other.
5. The multi-nozzle collaborative 3D liquid material printing equipment according to claim 1, characterized in that: The elastic clamping and limiting structure includes a clamping frame (18), which is elastically hinged to the side of the 3D printing nozzle (9) through the cooperation of a shaft and a torsion spring structure. A limiting edge (19) is provided on the mounting base (8). The bottom end of the clamping frame (18) and the limiting edge (19) are engaged with each other, and a pinching head (20) is provided at the top end.
6. The multi-nozzle collaborative 3D liquid material printing equipment according to claim 5, characterized in that: The clamping frame (18) has a locking protrusion (21) on its inner wall and a locking groove (22) on its side wall of the limiting edge (19). The locking protrusion (21) and the locking groove (22) engage with each other.
7. The multi-nozzle collaborative 3D liquid material printing equipment according to claim 1, characterized in that: The workbench (1) is provided with a placement seat (23), which is mounted on the workbench (1) by means of a shaft and a bearing. A rotating motor (24) is provided on the workbench (1) in conjunction with the placement seat (23).
8. The multi-nozzle collaborative 3D liquid material printing equipment according to claim 7, characterized in that: The placement base (23) has a vacuum adsorption chamber (25) inside. The vacuum adsorption chamber (25) extends upward to the top of the placement base (23) and has a vacuum adsorption hole (26). The vacuum adsorption chamber (25) is connected to a vacuum adsorption device through a flexible tube.