Plastic part printing platform

Abstract

The invention discloses a plastic part printing platform and relates to the field of 3D printers, the plastic part printing platform comprises a base and a portal frame fixed to the base, two sliding rods are symmetrically fixed to the inner wall of the base, and two sliding blocks are installed on the outer walls of the sliding rods in a sliding mode; when the plastic part printing platform works, one station executes plastic part printing, the other station completes profiling gluing, and the distribution of a glue layer is accurately matched with the shape of the bottom surface of a printed part; and after the stations are switched, the first-layer material printed in the pre-gluing area and the glue layer form space correspondence, and accurate coverage of the bonding enhancement area is achieved. Full-automatic gluing is achieved in batch production, manpower is saved, the glue consumption is reduced, the cleaning difficulty of a bottom plate on a subsequent hot bed is reduced, and the double benefits of resource saving and process optimization are achieved.

Description

Technical Field

[0001] The present invention relates to the field of 3D printers, and in particular to a plastic part printing platform. Background Art

[0002] Conventional 3D printers are only equipped with a hot bed, on which a base plate is installed. The print head and the hot bed are driven to move to print plastic parts on the base plate. The base plate is then removed and cleaned with a detergent after demoulding. PVP solid glue is applied to the base plate to enhance the connection between the workpiece and the base plate, ensuring that the thinner parts on the bottom of the plastic part will not warp during the printing process. However, manual gluing has the following problems: manual gluing is usually applied directly to the entire center area of the base plate. The accuracy of the gluing position is low, resulting in an increase in the amount of glue applied, a waste of glue, and an increase in the labor intensity of the cleaning work. The gluing work also increases the degree of manual labor. Under the condition of batch printing of the same plastic parts, the labor intensity and labor intensity are doubled. Summary of the Invention

[0003] In order to make up for the deficiencies of the existing technical problems, the purpose of the present invention is to provide a plastic parts printing platform, which solves the problem that the existing 3D printer needs to manually apply PVP solid glue, resulting in inaccurate glue application position, resulting in glue waste, increased cleaning work intensity, and increased labor volume and labor intensity.

[0004] In order to solve the problems of the prior art, the technical solutions of the present invention are as follows: A plastic parts printing platform includes a base and a gantry fixed to the base, wherein two heated beds are symmetrically provided at the movable end of the Y-axis lead screw linear module on the base, and the arrangement direction of the two heated beds is the same as the driving direction of the X-axis lead screw linear module on the gantry; The movable ends of the X-axis lead screw linear module are respectively provided with a print head and a connecting arm, and a gluing module is provided at the end of the connecting arm facing away from the print head. In the working state, the gluing module and the print head are respectively facing the same position on the top surface of the two hot beds. The connecting arm is driven to flip by the first rotating component, and cooperates with the X-axis lead screw linear module to exchange positions of the print head and the gluing module.

[0005] Optionally, the gluing module includes a sleeve that is slidably inserted into the end of the connecting arm away from the print head, a glue stick is inserted into the inner wall of the sleeve, and the glue stick is fixed in the sleeve by a positioning structure. A lifting assembly is also provided on the outer wall of the connecting arm, and the moving end of the lifting assembly acts on the outer wall of the sleeve to drive the sleeve to rise and fall, and after the moving end of the lifting assembly is separated from the outer wall of the sleeve, the sleeve can slide freely up and down on the connecting arm.

[0006] Optionally, a connecting hole is formed at one end of the connecting arm close to the sleeve, and the sleeve is slidably inserted into the connecting hole. Two longitudinal limiting grooves are symmetrically formed on the inner wall of the connecting hole, and two longitudinal limiting ridges are symmetrically formed on the outer wall of the sleeve. The limiting ridges are inserted into the limiting grooves. The positioning structure includes a bolt threadedly connected to the side wall of the upper end of the sleeve through a threaded hole, and the end of the bolt passes through the side wall of the sleeve and abuts against the outer wall of the rubber stick. The lifting assembly includes a first motor fixed to the top surface of the connecting arm, and a driving disk is fixed to the output end of the first motor. A rubber gasket is fixed to the outer periphery of the driving disk, and a notch is formed on one side of the rubber gasket.

[0007] Optionally, a connecting ring is fixed to the end of the connecting arm close to the print head, an upper connecting plate is fixed to the moving end of the X-axis lead screw linear module, the connecting arm is located directly above the upper connecting plate, the connecting ring is rotatably connected to the upper connecting plate through a bearing, and the connecting ring passes through the upper connecting plate and the connecting arm, the consumables feed pipe of the print head passes through the connecting ring, the first rotating assembly includes a first driven bevel gear fixed on the outer wall of the connecting ring, a second motor is fixed to the moving end of the X-axis lead screw linear module, and an active bevel gear is fixed to the output end of the second motor, and the active bevel gear is meshed with the first driven bevel gear.

[0008] Optionally, a cleaning assembly is installed at one end of the connecting arm close to the print head, and the cleaning assembly includes a bracket, a scraper and a second rotating assembly. The bracket is fixed to the bottom surface of the connecting arm close to the print head, and the lower end of the bracket is rotatably connected to the scraper through an axle pin. The scraper has a folding posture folded on the inner side of the bracket and a scraping posture with the end portion attached to the outer wall of the nozzle of the print head. The second rotating assembly is installed on the bracket, and is used to drive the scraper to flip so that the scraper can switch between the scraping posture and the folding posture. During the process of the connecting arm being driven by the first rotating assembly to flip 180 degrees, the scraper adheres to the outer wall of the nozzle, and the print head is rotatably connected to the moving end of the X-axis lead screw linear module. The print head is driven by the third rotating assembly to rotate 180 degrees in the opposite direction of the connecting arm, so that the scraper completes 360-degree cleaning of the periphery of the nozzle.

[0009] Optionally, the second rotating assembly includes a third motor fixed on the outer wall of the lower end of the bracket, the protruding end of the third motor passes through the side wall of the bracket and extends to the inner side of the bracket and is fixed with a driving gear, and the outer wall of the scraper near one end of the shaft pin is fixed with a driven gear, the axis of the driven gear coincides with the flipping axis of the scraper, and the driven gear is meshed with the driving gear.

[0010] Optionally, a lower connecting plate is fixed to the moving end of the X-axis lead screw linear module, and the lower connecting plate is located directly below the upper connecting plate. The consumable feed pipe is rotatably connected to the lower connecting plate through a bearing and passes through the lower connecting plate. The first driven bevel gear, the second motor and the driving bevel gear are all between the upper connecting plate and the lower connecting plate. A second driven bevel gear is fixed on the outer wall of the consumable feed pipe, and the second driven bevel gear is arranged opposite to the first driven bevel gear, and the second driven bevel gear is meshed with the driving bevel gear.

[0011] Compared with the prior art, the advantages of the present invention are as follows: 1. This invention integrates the gluing assembly and print head coaxially into the X-axis lead screw linear module, employing a coaxial drive structure to ensure consistent motion. This allows for synchronized operation of two hot beds through coordinated control: while one station prints a plastic part, the other completes contoured gluing, ensuring the glue layer distribution precisely matches the bottom shape of the printed part. After switching stations, the first layer of material printed in the pre-gluing area forms a spatial correspondence with the glue layer, achieving precise coverage of the bonding enhancement zone. This fully automated gluing process in mass production saves manpower, reduces glue usage, and simplifies subsequent cleaning of the hot bed base, achieving the dual benefits of resource conservation and process optimization.

[0012] 2. This invention incorporates a self-cleaning system into the connecting arm. Through the kinematic coupling of the scraper support assembly and the flipping mechanism, the scraper is simultaneously driven to perform a circumferential scraping motion along the outer wall of the printhead as the connecting arm flips to switch workstations, effectively removing any molten residual material that accumulates in the high-temperature zone of the printhead. This effectively prevents the risk of printhead blockage caused by molten material accumulation, ensuring the stability of continuous printing operations while eliminating downtime required for manual cleaning interventions, thereby improving overall equipment availability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is a schematic diagram of the fixed plate structure of the present invention.

[0015] Figure 3 Schematic diagram of the print head structure of the present invention.

[0016] Figure 4 Schematic diagram of the connecting hole structure of the present invention.

[0017] Figure 5 It is a schematic structural diagram of the rubber gasket of the present invention.

[0018] Figure 6 It is a schematic structural diagram of the active bevel gear of the present invention.

[0019] Figure 7 This is a structural diagram of embodiment 2 of the present invention.

[0020] Figure 8 It is a schematic diagram of the scraper structure of the present invention.

[0021] Figure 9 This is a schematic structural diagram of the second driven bevel gear of the present invention.

[0022] Figure 10 Schematic diagram of the positional relationship among the bracket, scraper and print head of the present invention.

[0023] Figure numerals: 1. base; 2. gantry; 3. hot bed; 4. fixed plate; 5. Y-axis lead screw linear module; 6. Z-axis lead screw linear module; 7. X-axis lead screw linear module; 8. print head; 801. consumable material feed tube; 802. nozzle; 9. upper connecting plate; 10. connecting ring; 11. connecting arm; 12. connecting hole; 13. sleeve; 14. glue stick; 15. bolt; 16. first driven bevel gear; 17. second motor; 18. driving bevel gear; 19. first motor; 20. driving disk; 21. rubber washer; 22. bracket; 23. scraper; 24. third motor; 25. driving gear; 26. driven gear; 27. lower connecting plate; 28. second driven bevel gear. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] For example 1, please refer to Figures 1 to 6 This embodiment provides a plastic part printing platform, including a base 1 and a gantry 2 fixed to the base 1. Two slide bars are symmetrically fixed to the inner wall of the base 1, and two sliders are slidably mounted on the outer wall of the slide bars. Two hot beds 3 are symmetrically arranged above the base 1, and the two hot beds 3 are connected by two fixing plates 4. There is a gap between the two hot beds 3, and the two sliders on each slide bar are respectively fixed to the two fixing plates 4; A Y-axis lead screw linear module 5 is fixed in the middle of the base 1, and the moving end of the Y-axis lead screw linear module 5 is fixed to the bottom surface of the two hot beds 3. The Y-axis lead screw linear module 5 can synchronously drive the two hot beds 3 to move along the Y direction, and the arrangement direction of the two hot beds 3 is perpendicular to the driving direction of the Y-axis lead screw linear module 5.

[0026] Z-axis screw linear modules 6 are symmetrically provided on both sides of the gantry 2, and the X-axis screw linear modules 7 are fixed on the movable ends of the two Z-axis screw linear modules 6. The movable end of the X-axis screw linear module 7 is fixed with a print head 8, and the movable end of the X-axis screw linear module 7 is fixed with an upper connecting plate 9. The middle part of the upper connecting plate 9 is rotatably connected to a connecting ring 10 through a bearing, and the upper end of the connecting ring 10 is fixed with a connecting arm 11, which is located above the upper connecting plate 9. The connecting ring 10 passes through the upper connecting plate 9 and the connecting arm 11 respectively, and the consumables feed pipe 801 of the print head 8 passes through the connecting ring 10.

[0027] During printing, the print head 8 faces a hot bed 3, on which a base plate is installed (the base plate directly supports the plastic printed parts, which is convenient for disassembly and cleaning and is a mature technology of existing 3D printers). The hot bed 3 is powered on to heat the base plate, so that the solid glue applied on the base plate melts, thereby increasing the firmness of the connection between the printed part and the base plate. Then the Y-axis lead screw linear module 5, the Z-axis lead screw linear module 6 and the X-axis lead screw linear module 7 cooperate to drive the print head 8 to move on the base plate to print the plastic parts.

[0028] A connecting hole 12 is formed at the end of the connecting arm 11 facing away from the print head 8, and the sleeve 13 is slidably inserted into the connecting hole 12. The connecting hole 12 is deep, ensuring that the sleeve 13 can slide stably without tilting or offsetting. Two longitudinal limiting grooves are symmetrically formed on the inner wall of the connecting hole 12, and two longitudinal limiting ridges are symmetrically formed on the outer wall of the sleeve 13. The limiting ridges are inserted into the limiting grooves to ensure that the sleeve 13 can only slide longitudinally but cannot rotate around its axis. A glue stick 14 is inserted into the inner wall of the sleeve 13, and a bolt 15 is threadedly connected to the upper side wall of the sleeve 13 through a threaded hole. The end of the bolt 15 passes through the side wall of the sleeve 13 and contacts the outer wall of the glue stick 14.

[0029] When replacing the glue stick 14, loosen the bolt 15, take the original glue stick 14 out of the sleeve 13, and then insert the new glue stick 14 into the sleeve 13, ensuring that both ends of the new glue stick 14 protrude from both ends of the sleeve 13, then tighten the bolt 15 to fix the new glue stick 14 in the sleeve 13, and then align the sleeve 13 with the connecting hole 12 and insert it, and then under the action of gravity, the sleeve 13 slides to the lowest position on the connecting arm 11. At this time, the bolt 15 contacts the top surface of the connecting arm 11, limiting the continued downward movement of the sleeve 13 and preventing the sleeve 13 from separating from the connecting arm 11.

[0030] A first driven bevel gear 16 is fixed on the outer wall of the lower end of the connecting ring 10, and a second motor 17 is fixed on the moving end of the X-axis lead screw linear module 7. A driving bevel gear 18 is fixed to the output end of the second motor 17, and the driving bevel gear 18 is meshed and connected with the first driven bevel gear 16. The driving flipping and positioning locking of the connecting arm 11 are completed by the second motor 17. When the second motor 17 is powered on, the driving bevel gear 18 is driven to rotate, and the first driven bevel gear 16 is rotated, thereby driving the connecting arm 11 to flip. When the second motor 17 is powered off, the output end of the second motor 17 is locked, and the position of the connecting arm 11 is locked. The second motor 17 adopts a worm gear reduction motor or other type of motor that can achieve a power-off locking effect to ensure that its output end cannot rotate after power is off.

[0031] It should be emphasized that the axis of the consumable feed tube 801, the axis of the nozzle 802, the axis of the first driven bevel gear 16 and the axis of the connecting ring 10 all coincide. In the printing state, the length direction of the connecting arm 11 is parallel to the driving direction of the X-axis screw linear module 7.

[0032] In this way, when printing, the glue stick 14 and the print head 8 are respectively facing the same position on the top surface of the two hot beds 3, and the Z-axis screw linear module 6 drives the print head 8 and the glue stick 14 to descend. Before the print head 8 descends to the appropriate position, the glue stick 14 first contacts the bottom plate of the top surface of the hot bed 3 directly below it, and then the print head 8 continues to descend until it reaches the appropriate position. During this process, the glue stick 14 and the sleeve 13 slide upward compared to the connecting arm 11, and then drive the hot bed 3 and the print head 8 to move. The print head 8 performs printing on the bottom plate on the hot bed 3 directly below it. Since the glue stick 14 and the print head 8 are respectively facing the same position on the top surface of the two hot beds 3, The print head 8 and the glue stick 14 move in the same path, so when the print head 8 prints the first layer of the plastic part, the glue stick 14 applies glue on the base plate along the same path until the first layer is printed. Then the Z-axis screw linear module 6 drives the print head 8 to rise one layer height to print the second layer. Because the layer height of each layer of 3D printing is very low, if the sleeve 13 is not driven to rise, when printing the second layer, the third layer, or even the fifth layer, the bottom of the glue stick 14 will be in contact with the base plate, which increases the amount of glue applied, and the glue application position is different from the first layer. The application position is no longer the required position for the first layer, so it is necessary to push the glue stick 14 to rise.

[0033] In order to achieve the rise of the glue stick 14, a first motor 19 is fixed on the top surface of the connecting arm 11, and a driving disk 20 is fixed to the output end of the first motor 19. A rubber gasket 21 is fixed to the outer periphery of the driving disk 20. A notch is formed on one side of the rubber gasket 21. When the Z-axis screw linear module 6 drives the print head 8 to descend to print the first layer of the plastic part, the notch is opposite to the outer wall of the sleeve 13, and the rubber gasket 21 does not contact the outer wall of the sleeve 13, so the sleeve 13 can slide freely up and down on the connecting arm 11.

[0034] After completing the printing of the first layer of the plastic part, the Z-axis lead screw linear module 6 drives the print head 8 to rise, and at the same time drives the first motor 19 to rotate, driving the rubber gasket 21 to rotate, so that the rubber gasket 21 contacts the outer wall of the sleeve 13, and the notch flips upward, and then the rubber gasket 21 abuts against the outer wall of the sleeve 13. The rubber gasket 21 is deformed and pressed against the sleeve 13. By rotating the drive disk 20, the rubber gasket 21 drives the sleeve 13 to slide upward, thereby separating the glue stick 14 from the base plate, so that no glue application work is required during subsequent printing. In this way, the glue smearing position on the base plate on the preparation station can be accurately matched with the bottom surface position of the printed plastic part. After completing the printing of a plastic part, the X-axis screw linear module 7 drives the print head 8 to move above the two hot beds 3, and then the second motor 17 works to drive the connecting arm 11 to flip 180 degrees. Then the X-axis screw linear module 7 continues to drive the print head 8 to move to the top of the hot bed 3 where the glue is applied, and the glue stick 14 is flipped by the connecting arm 11 to the top of the printed plastic part. The glue stick 14 switches positions with the print head 8, and then the plastic part and the base plate at the bottom of it are removed, and a new base plate is installed on the hot bed 3. Then the print head 8 continues to print on the hot bed 3 where the glue is applied, and the same glue stick 14 continues to apply glue on the hot bed 3.

[0035] Moreover, when the bottom surface of the glue stick 14 is dry and the glue is difficult to apply, the first motor 19 can be driven to rotate in the opposite direction to the above process. When the glue stick 14 is applied on the bottom plate, the rubber gasket 21 rotates and pushes the sleeve 13, causing the sleeve 13 to be pressed downward, thereby making it easier to apply the glue on the bottom plate.

[0036] In summary, this embodiment is based on traditional technology, and the gluing component and the print head 8 are coaxially integrated into the X-axis screw linear module 7, and the dual hot beds 3 operate synchronously: when one station is printing, the other station implements contoured gluing, and the glue layer accurately matches the shape of the bottom surface of the printed part; after the station is switched, the first layer of material and the pre-gluing area completely overlap, realizing a fully automatic gluing process, saving manpower and reducing the amount of glue used, and simultaneously reducing the difficulty of cleaning the substrate, achieving dual optimization of resources and processes.

[0037] For example 2, please refer to Figures 7 to 10This embodiment provides a further technical solution based on the first embodiment. The difference between this embodiment and the first embodiment is that a bracket 22 is fixed to the bottom surface of the connecting arm 11 near one end of the print head 8, and the lower end of the bracket 22 is rotatably connected to a scraper 23 through an axle pin. The scraper 23 has a folding posture folded on the inner side of the bracket 22 and a scraping posture with the end portion attached to the outer wall of the nozzle 802 of the print head 8.

[0038] A third motor 24 is fixed on the outer wall of the lower end of the bracket 22. The protruding end of the third motor 24 passes through the side wall of the bracket 22 and extends to the inner side of the bracket 22 and is fixed with a driving gear 25. A driven gear 26 is fixed to the outer wall of the scraper 23 near one end of the shaft pin. The axis of the driven gear 26 coincides with the flipping axis of the scraper 23. The driven gear 26 is meshed and connected with the driving gear 25. For the switching of the scraping posture and the folding posture of the scraper 23, the third motor 24 is driven to rotate, which drives the driving gear 26 to rotate. The driven gear 26 is turned to drive the scraper 23 to rotate, and the posture of the scraper 23 can be switched.

[0039] The moving end of the X-axis screw linear module 7 is fixed with a lower connecting plate 27, and the lower connecting plate 27 is located directly below the upper connecting plate 9. The consumable feed pipe 801 is rotatably connected to the lower connecting plate 27 through a bearing and passes through the lower connecting plate 27. The print head 8 is rotatably connected to the moving end of the X-axis screw linear module 7 through the consumable feed pipe 801 and the lower connecting plate 27. The first driven bevel gear 16, the second motor 17 and the driving bevel gear 18 are all between the upper connecting plate 9 and the lower connecting plate 27. A second driven bevel gear 28 is fixed on the outer wall of the consumable feed pipe 801. The second driven bevel gear 28 is arranged opposite to the first driven bevel gear 16, and the second driven bevel gear 28 is meshed with the driving bevel gear 18.

[0040] In this way, after completing the printing work of a plastic part on a hot bed 3, the worker takes away the plastic part and lays a new base plate, and then the X-axis screw linear module 7 works to drive the print head 8 to move to the top between the two hot beds 3, and then the second motor 17 works to drive the connecting arm 11 to flip. Before driving the connecting arm 11 to flip, the third motor 24 works to make the scraper 23 first contact the outer wall of the conical surface of the nozzle 802, and then the second motor 17 works to drive the connecting arm 11 to flip. During the process of the connecting arm 11 being driven to flip 180 degrees, the scraper 23 fits the outer wall of the nozzle 802, and while the active bevel gear 18 drives the first driven bevel gear 16 to rotate , which also drives the second driven bevel gear 28 to rotate, causing the print head 8 and the connecting arm 11 to rotate in opposite directions at the same time. Finally, the print head 8 is driven to rotate 180 degrees in the opposite direction of the connecting arm 11, so that the scraper 23 completes 360-degree cleaning of the periphery of the nozzle 802. After the connecting arm 11 is flipped over, the cleaning work is completed, and then the third motor 24 works to fold the scraper 23 into the bracket 22, and then the subsequent printing work is carried out. It should be emphasized that the bracket 22 is at a certain distance from the print head 8 and the upper and lower connecting plates 27, so that the bracket 22 will not have movement obstacles with the upper and lower connecting plates 27 and the print head 8 during rotation. Figure 10 shown.

[0041] In summary, this embodiment sets a cleaning structure composed of a scraper 23, a bracket 22, etc. on the connecting arm 11, and uses the flipping of the connecting arm 11 to drive the scraper 23 to scrape off the residual molten consumables attached to the outer wall of the nozzle 802, thereby achieving an automatic cleaning effect, avoiding a large amount of residual consumables adhering to the outer wall of the nozzle and causing the nozzle 802 to be blocked, thereby avoiding affecting the printing work.

[0042] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A plastic part printing platform, comprising a base (1) and a gantry (2) fixed on the base (1), characterized in that: Two heated beds (3) are symmetrically arranged at the movable end of the Y-axis lead screw linear module (5) on the base (1), and the arrangement direction of the two heated beds (3) is the same as the driving direction of the X-axis lead screw linear module (7) on the gantry (2); The movable ends of the X-axis lead screw linear module (7) are respectively provided with a print head (8) and a connecting arm (11), and a gluing module is provided at one end of the connecting arm (11) facing away from the print head (8). In a working state, the gluing module and the print head (8) are respectively facing the same position on the top surface of the two hot beds (3). The connecting arm (11) is driven to flip by the first rotating component and cooperates with the X-axis lead screw linear module (7) to exchange the positions of the print head (8) and the gluing module.

2. The plastic part printing platform according to claim 1, characterized in that: The gluing module comprises a sleeve (13) slidably plugged into an end of the connecting arm (11) facing away from the print head (8), a glue stick (14) is plugged into the inner wall of the sleeve (13), and the glue stick (14) is confined in the sleeve (13) by a positioning structure. A lifting assembly is also provided on the outer wall of the connecting arm (11), and the movable end of the lifting assembly acts on the outer wall of the sleeve (13) to drive the sleeve (13) to move up and down. After the movable end of the lifting assembly is separated from the outer wall of the sleeve (13), the sleeve (13) can slide freely up and down on the connecting arm (11).

3. The plastic part printing platform according to claim 2, characterized in that: A connecting hole (12) is formed at one end of the connecting arm (11) close to the sleeve (13), and the sleeve (13) is slidably inserted into the connecting hole (12). Two longitudinal limiting grooves are symmetrically formed on the inner wall of the connecting hole (12), and two longitudinal limiting ridges are symmetrically formed on the outer wall of the sleeve (13), and the limiting ridges are inserted into the limiting grooves.

4. The plastic part printing platform according to claim 2, characterized in that: The positioning structure comprises a bolt (15) threadedly connected to the upper side wall of the sleeve (13) through a threaded hole, and the end of the bolt (15) passes through the side wall of the sleeve (13) and abuts against the outer wall of the glue stick (14).

5. The plastic part printing platform according to claim 4, characterized in that: The lifting assembly comprises a first motor (19) fixed to the top surface of the connecting arm (11), a driving disk (20) being fixed to the output end of the first motor (19), a rubber gasket (21) being fixed to the outer periphery of the driving disk (20), and a notch being formed on one side of the rubber gasket (21).

6. The plastic part printing platform according to claim 1, characterized in that: A connecting ring (10) is fixed to one end of the connecting arm (11) close to the print head (8), and an upper connecting plate (9) is fixed to the movable end of the X-axis lead screw linear module (7). The connecting arm (11) is located directly above the upper connecting plate (9). The connecting ring (10) is rotatably connected to the upper connecting plate (9) through a bearing, and the connecting ring (10) passes through the upper connecting plate (9) and the connecting arm (11). The consumable material feed pipe (801) of the print head (8) passes through the connecting ring (10).

7. The plastic part printing platform according to claim 6, characterized in that: The first rotating assembly comprises a first driven bevel gear (16) fixed on the outer wall of the connecting ring (10), a second motor (17) is fixed on the moving end of the X-axis lead screw linear module (7), a driving bevel gear (18) is fixed on the output end of the second motor (17), and the driving bevel gear (18) is meshedly connected with the first driven bevel gear (16).

8. The plastic part printing platform according to claim 7, characterized in that: A cleaning assembly is installed at one end of the connecting arm (11) close to the print head (8), and the cleaning assembly includes a bracket (22), a scraper (23) and a second rotating assembly. The bracket (22) is fixed to the bottom surface of the end of the connecting arm (11) close to the print head (8). The lower end of the bracket (22) is rotatably connected to the scraper (23) through an axle pin. The scraper (23) has a folding posture folded inside the bracket (22) and a scraping posture with its end attached to the outer wall of the nozzle (802) of the print head (8). The second rotating assembly is installed on the bracket (22). The bracket (22) is used to drive the scraper (23) to flip, so that the scraper (23) switches between a scraping posture and a folding posture. When the connecting arm (11) is driven by the first rotating component to flip 180 degrees, the scraper (23) fits the outer wall of the nozzle (802), the print head (8) is connected to the moving end of the X-axis lead screw linear module (7), and the print head (8) is driven by the third rotating component to rotate 180 degrees in the opposite direction to the connecting arm (11), so that the scraper (23) completes 360-degree cleaning of the outer periphery of the nozzle (802).

9. The plastic part printing platform according to claim 8, characterized in that: The second rotating assembly includes a third motor (24) fixed on the outer wall of the lower end of the bracket (22), the protruding end of the third motor (24) passes through the side wall of the bracket (22) and extends to the inner side of the bracket (22) and is fixed with a driving gear (25), and the outer wall of the scraper (23) near one end of the shaft pin is fixed with a driven gear (26), the axis of the driven gear (26) coincides with the turning axis of the scraper (23), and the driven gear (26) is meshed with the driving gear (25).

10. The plastic part printing platform according to claim 9, characterized in that: The movable end of the X-axis lead screw linear module (7) is fixed with a lower connecting plate (27), and the lower connecting plate (27) is located directly below the upper connecting plate (9). The consumable material feeding tube (801) is rotatably connected to the lower connecting plate (27) through a bearing and passes through the lower connecting plate (27). The first driven bevel gear (16), the second motor (17) and the driving bevel gear (18) are all between the upper connecting plate (9) and the lower connecting plate (27). A second driven bevel gear (28) is fixed on the outer wall of the consumable material feeding tube (801), and the second driven bevel gear (28) is arranged opposite to the first driven bevel gear (16), and the second driven bevel gear (28) is meshed with the driving bevel gear (18).

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