Cutter-free multicolor printing device

Abstract

The invention discloses a cutter-free multi-color printing device. The printing device comprises a printer, a cutter and a driving device, the printing module is arranged on the printer; the cooling mechanism is arranged on one side of the printer, and the cooling mechanism is suitable for cooling the printing module; the first feeding device is arranged on the back of the printer, and the first feeding device is suitable for feeding the printing module; the second feeding device is arranged on the outer side of the printer; and the second feeding device is suitable for feeding the printing module. Through the innovative cutter-free material changing design, the material changing mode of firstly drawing and then feeding is adopted, the problems that consumable cutting is not thorough, notches are uneven and the like possibly caused by a traditional cutter device are thoroughly avoided, the material changing reliability and the printing quality are improved, a multiple cooling system is designed, multiple modes of air cooling, water cooling and air cooling are included, and the material changing efficiency is improved. And flexible switching or cooperative work can be realized according to actual printing requirements.

Description

Technical Field

[0001] The invention relates to the technical field of additive manufacturing, in particular to a cutter-free multi-color printing device. Background Art

[0002] As a rapid prototyping technology, 3D printing technology has been widely used in industrial manufacturing, medical equipment, construction engineering, education and scientific research. At present, the multi-color 3D printers on the market are mainly divided into two structural types: single-nozzle multi-feed and multi-nozzle. The former realizes the switching of different color materials by setting multiple feed channels on a single nozzle and equipping it with a cutter device, while the latter uses multiple independent nozzles to print different colors respectively. These printers are usually equipped with a wire feeding system, a temperature control system and a cooling system to ensure the continuity of the printing process and the quality of the printed products. The wire feeding system is responsible for the transportation and switching of materials, the temperature control system ensures that the printing material reaches a suitable molten state, and the cooling system is used to prevent the print head from overheating and ensure the molding quality.

[0003] However, there are many problems with existing multi-color 3D printers: first, the method of using a cutter structure to cut the consumables is prone to incomplete cutting or uneven incisions, affecting the material changing effect and printing quality; second, the traditional cooling method often uses a single air cooling, which is difficult to adapt to the temperature control requirements of different printing materials and different environmental conditions, and is likely to cause improper curing or deformation of the printing materials; third, the existing wire feeding system has a complex structure and is inconvenient to adjust, and is prone to blockage or poor wire feeding during the material changing process, seriously affecting the printing efficiency and product quality; more importantly, the existing technology lacks an effective consumables monitoring and automatic replenishment mechanism, and is prone to printing interruptions due to insufficient consumables during the printing process, reducing printing efficiency and automation; in addition, the fixed design of the feeding device limits the flexibility and scope of application of the printer, and it is difficult to meet the printing needs in different scenarios; finally, the temperature control system in the existing technology often has a delayed response, making it difficult to achieve precise temperature regulation, and is likely to cause thermal degradation of the printing material or warping and deformation of the printed part.

[0004] Therefore, there is an urgent need for a 3D printing device that can achieve multi-color printing without a cutter, has multiple cooling systems, a reliable and stable wire feeding system, flexible and diverse feeding methods, and precise temperature control, so as to solve various technical problems existing in the prior art and improve the quality and efficiency of multi-color 3D printing. Summary of the invention

[0005] The object of the present invention is to provide a cutterless multi-color printing device to solve the problems existing in the existing multi-color 3D printers mentioned in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution, a cutter-free multi-color printing device, the printing device comprising:

[0007] printer;

[0008] A printing module is arranged on the printer, and the printing module comprises:

[0009] A shift mounting seat connected to the x-axis of the printer;

[0010] A feeding part, fixedly connected to the shifting mounting seat;

[0011] A heat dissipation aluminum block, fixed to the bottom of the feed portion;

[0012] A throat, fixed inside the heat dissipation aluminum block;

[0013] A nozzle, fixed to the bottom of the throat;

[0014] A hot end, fixed to the outside of the nozzle, wherein a heating element is disposed in the hot end;

[0015] A first fan, fixed to one side of the heat dissipation aluminum block;

[0016] A second fan is fixed to the front side of the feed portion and the heat dissipation aluminum block, and a wind guide housing is fixedly connected to the bottom of the second fan;

[0017] A buffer connected to the top of the feeding part;

[0018] A cooling mechanism, the cooling mechanism being arranged at one side of the printer and being suitable for cooling the printing module;

[0019] A first feeding device, disposed at the back of the printer, the first feeding device being suitable for feeding the printing module;

[0020] The second feeding device is arranged on the outside of the printer; the second feeding device is suitable for feeding the printing module.

[0021] Preferably, the inner wall of the throat is provided with a polytetrafluoroethylene coating, the inner wall smoothness of the nozzle and the throat is ra0.1-ra0.8, and the thickness of the throat wall is 0.1-0.5mm.

[0022] Preferably, the buffer comprises:

[0023] A wire feeding block is fixed to the top of the feeding part, and the inner side of the wire feeding block is hollow;

[0024] An upper shell is sleeved on the outer side of the upper end of the wire feeding block, the length and width of the inner side of the upper shell are respectively adapted to the length and width of the wire feeding block, and a plurality of groups of wire feeding holes are opened through the top of the upper shell;

[0025] A limit switch, fixed to the lower end surface of the wire feeding block;

[0026] Wherein, the upper shell triggers the limit switch by moving downward.

[0027] Preferably, the cooling mechanism comprises:

[0028] A cooling end, arranged at one side of the printer;

[0029] A cooling system is arranged in the cooling end;

[0030] A water tank is arranged in the cooling end, and a circulating water pump is installed in the water tank;

[0031] The cold end output pipe and the cold end input pipe are both connected to the cold supply end.

[0032] Preferably, a plurality of groups of heat dissipation fins are integrally connected to the surface of the heat dissipation aluminum block, a cooling channel is provided on the inner side of the heat dissipation aluminum block, the cooling channel is in a horizontal "U"-shaped structure, and the cooling channel passes through the outside of the throat, and the openings at both ends of the cooling channel are respectively connected to the cold end output pipe and the cold end input pipe.

[0033] Preferably, the first feeding device comprises:

[0034] A base frame is fixed to the lower end of the back of the printer, and a plurality of material tray partitions are integrally connected to the inner side of the base frame at intervals, and a plurality of material tray placement areas are formed on the inner side of the base frame through the plurality of material tray partitions;

[0035] Two groups of suspension shafts are fixedly connected to the inner side of the base frame at intervals, and the suspension shafts are fixedly inserted into a plurality of groups of the tray partitions;

[0036] A plurality of groups of first consumable material trays are respectively placed in a plurality of groups of the tray placement areas, and the first consumable material trays are connected to the suspension shaft;

[0037] A plurality of first feeding motors are equidistantly arranged at the upper back of the printer;

[0038] A plurality of feeding component racks are respectively connected to a plurality of first feeding motors, a first transmission part is movably provided inside the feeding component rack, the first transmission part is fixedly connected to the motor shaft of the first feeding motor, and an adjustment rack is rotatably connected to the feeding component rack, a second transmission part is rotatably connected to the inside of the adjustment rack via a rotating shaft, and a gasket is fixedly connected to the upper end of the back of the adjustment rack;

[0039] A protective rear cover is fixed to the upper end of the back of the printer, and a plurality of groups of the first feeding motors and a plurality of groups of feeding component racks are arranged on the inner side of the protective rear cover;

[0040] A plurality of adjustment screws are inserted and connected in the back of the protective rear cover and the gasket through a thread structure.

[0041] Preferably, the first transmission part and the second transmission part are connected by meshing transmission, and an annular groove is formed in the surface of the first transmission part and the second transmission part, and the inner wall of the annular groove is integrally connected with a plurality of groups of anti-slip teeth in a regular annular array.

[0042] Preferably, an elliptical hole is formed through the upper end of the adjustment frame, the adjustment screw is inserted into the elliptical hole, a first spring is sleeved on the outer side of the adjustment screw, the first spring is connected between the gasket and the inner wall of the protective rear cover, and the adjustment frame is rotated to make the first transmission part and the second transmission part engage in transmission connection.

[0043] Preferably, the second feeding device comprises:

[0044] A remote material supply box, wherein both sides of the remote material supply box are provided with a receiving cavity, two sets of wire drum shafts are connected in the receiving cavity, and a second consumable material disk is installed on the wire drum shaft;

[0045] Two groups of electrically controlled wire extrusion boxes are respectively fixed to the inner walls of the two groups of accommodating chambers. Two groups of second feeding motors are fixedly arranged inside the electrically controlled wire extrusion boxes. Slideways are provided in the top and bottom of the electrically controlled wire extrusion boxes. Slide blocks are slidably connected in the slideways. A square card is fixedly connected to the inside of the slideways. A second spring is fixedly connected between the slide blocks and the inner wall of the slideways. Wire threading channels are transversely penetrated in the upper and lower ends of the electrically controlled wire extrusion boxes. The wire threading channels are connected to the slideways.

[0046] Four groups of outlet tubes are respectively inserted into the remote feed box, and two groups of the outlet tubes are fixedly inserted into each group of the electric-controlled wire extrusion box;

[0047] Two sets of box covers are flipped and connected to two sides of the remote feeding box through hinges.

[0048] Preferably, the width of the slider is adapted to the width of the slide groove, and the width of the inner side of the slider is adapted to the width of the square card. The inner side of the slider is rotatably connected to the first wire wheel via a rotating shaft, and the motor shaft of the second feeding motor is fixedly connected to the second wire wheel. The second wire wheel is connected to the inner side of the slider, and the wire threading channel, the first wire wheel, the second wire wheel and the threading tube are suitable for wire threading of consumables.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] 1) This application adopts an innovative cutter-free material change design and a material change method of first drawing and then feeding, which completely avoids the problems of incomplete cutting of consumables and uneven cuts that may be caused by traditional cutter devices, and improves the reliability of material change and printing quality. At the same time, the inner wall of the throat is coated with polytetrafluoroethylene and has a high smoothness (ra0.1-ra0.8), plus a reasonable wall thickness design (0.1-0.5mm), which effectively prevents the consumables from clogging or adhering in the throat, greatly improving the smoothness and stability of the printing process. This design not only simplifies the structure and reduces maintenance costs, but also significantly increases the service life of the printing equipment;

[0051] 2) The present application designs a multiple cooling system, including air cooling, water cooling and air cooling, which can be flexibly switched or work together according to actual printing needs. Among them, the reasonable arrangement of the first fan and the second fan provides a full range of air cooling effects, and cooperates with the guiding function of the air guide shell to achieve rapid prototyping of printed products; and the water cooling system can achieve more precise temperature control through the cooperation of the water tank and the circulating water pump, combined with the cooling flow channel design in the heat dissipation aluminum block. The cold air system provides a stronger cooling capacity, which is crucial for the rapid cooling of high-temperature printed materials. Multiple sets of heat dissipation fins are also designed on the surface of the heat dissipation aluminum block to further improve the heat dissipation efficiency. This multiple cooling system design can not only effectively prevent overheating during the printing process, but also select the most suitable cooling method according to the characteristics of different materials, significantly improving the printing quality and efficiency;

[0052] 3) The wire feeding system of the present application adopts an innovative dual feeding device design, including a first feeding device on the back and a second feeding device on the outside. The first feeding device realizes the orderly placement of multiple groups of material trays through structures such as a base frame and a material tray partition, and ensures the stability of wire feeding through an adjustable transmission structure. The meshing transmission connection between the first transmission part and the second transmission part, combined with the anti-slip tooth design in the annular groove, effectively prevents slipping during printing. The second feeding device adopts a remote feeding method, and realizes the precise delivery of consumables through designs such as an electronically controlled wire extrusion box and an elastic structure. Both feeding devices can be adjusted according to actual needs, greatly improving the adaptability and practicality of the equipment;

[0053] 4) The buffer design of the present application has an intelligent consumables supply function. When the consumables in the print head are insufficient or out of material, the upper shell will slide downward under the action of the consumables movement and trigger the limit switch. At this time, the control system will promptly control the feeding device to quickly supply a certain amount of consumables into the buffer, thereby realizing automatic replenishment of consumables and avoiding printing interruptions or printing quality problems caused by lack of material during the printing process. At the same time, the elastic structure design of the slider, spring and other elastic structures in the electronically controlled wire extrusion box ensures the stability of the consumables conveying process and improves the reliability and stability of automatic feeding;

[0054] 5) The overall structural design of this application is reasonable, and the various functional components are properly coordinated, with strong practicality and reliability. Through innovative designs such as cutter-free material change, double cooling, and dual feeding systems, it not only solves various problems in the prior art, but also realizes intelligent temperature control and stable wire feeding in the multi-color printing process, significantly improving the quality and efficiency of 3D printing. At the same time, the modular design concept of the present invention also provides convenient conditions for subsequent functional expansion and performance improvement, and has strong technical advancement and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of a structure of a first feeding device of the present application feeding a printer;

[0056] Figure 2 Another structural schematic diagram of the first feeding device of the present application feeding the printer;

[0057] Figure 3 It is a partial front cross-sectional view of the cooling mechanism of the present application when performing water cooling and heat dissipation;

[0058] Figure 4 It is a partial front cross-sectional view of the cooling mechanism of the present application when performing air cooling and heat dissipation;

[0059] Figure 5 This is a schematic diagram of the chassis structure of this application;

[0060] Figure 6 A schematic diagram of the structure of the printing module of the present application;

[0061] Figure 7 Another structural schematic diagram of the printing module of the present application;

[0062] Figure 8 A front cross-sectional view of the printing module of the present application;

[0063] Fig. 9 This is a schematic diagram of the structure of the heat dissipation aluminum block of the present application;

[0064] Fig.10 A schematic diagram of the structure of the buffer of the present application;

[0065] Fig.11 Another structural schematic diagram of the buffer of the present application;

[0066] Fig.12 It is a schematic diagram of the structure inside the front side of the protective rear cover of the present application;

[0067] Fig.13 A structural schematic diagram of the feed component rack of the present application;

[0068] Fig.14Another structural schematic diagram of the feed component rack of the present application;

[0069] Fig.15 A top view of the feed assembly rack of the present application;

[0070] Fig.16 This is a schematic diagram of the structure of the first transmission part and the second transmission part of the present application;

[0071] Fig.17 This is a schematic diagram of the structure of the second feeding device and the printer of the present application;

[0072] Fig.18 This is a schematic diagram of the structure of the second feeding device of the present application feeding the printer;

[0073] Fig.19 This is a schematic diagram of the structure of the remote feeding box of the present application;

[0074] Fig. 20 A schematic diagram of the structure of the remote feeding box of the present application after the box cover is removed;

[0075] Fig.21 This is another schematic diagram of the structure of the remote feeding box of the present application after the box cover is removed;

[0076] Fig. 22 This is a schematic diagram of the structure inside one side of the electric-controlled wire extrusion box of the present application;

[0077] Fig.23 This is a schematic diagram of the structure on the other side of the electric-controlled wire extrusion box of the present application;

[0078] Fig.24 This is a schematic diagram of the slider structure of this application;

[0079] Fig.25 This is a schematic diagram of the structure of the first wire-moving wheel and the second wire-moving wheel of the present application;

[0080] Fig.26 This is a schematic diagram of a structure when heat dissipation is achieved only through air cooling in this application;

[0081] Fig. 27 This is another structural schematic diagram when heat dissipation is achieved only through air cooling in this application.

[0082] In the figure:

[0083] 1. Printer;

[0084] 2. Printing module; 21. Shifting mounting seat; 22. Feeding part; 23. Heat dissipation aluminum block; 231. Heat dissipation fins; 232. Cooling channel; 24. Throat; 25. Nozzle; 26. Hot end; 261. Heating element; 27. First fan; 28. Second fan; 281. Air guide housing; 29. ​​Buffer; 291. Wire feeding block; 292. Upper housing; 2921. Wire feeding hole; 293. Limit switch;

[0085] 3. Cooling mechanism; 31. Cold supply end; 32. Air conditioning system; 33. Water tank; 331. Circulating water pump; 34. Cold end output pipe; 35. Cold end input pipe;

[0086] 4. First feeding device; 41. Base frame; 411. Tray partition; 412. Tray placement area; 42. Suspension shaft; 43. First consumable material tray; 44. First feeding motor; 45. Feeding assembly frame; 451. First transmission part; 452. Second transmission part; 453. Adjustment frame; 4531. Oval hole; 454. Annular groove; 455. Anti-skid teeth; 456. Gasket; 46. Protective rear cover; 47. Adjustment screw; 471. First spring;

[0087] 5. Second feeding device; 51. Remote feeding box; 511. Accommodating chamber; 512. Wire drum shaft; 513. Second consumable material disk; 52. Electric-controlled wire extrusion box; 521. Second feeding motor; 522. Slide groove; 523. Sliding block; 524. Square card; 525. Second spring; 526. First wire wheel; 527. Second wire wheel; 528. Wire threading channel; 53. Wire-threading tube; 54. Box cover. DETAILED DESCRIPTION

[0088] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0089] In the description of the invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0090] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0091] See also Figure 1-27 The present invention provides a technical solution: a cutter-free multi-color printing device, the printing device comprising:

[0092] Printer 1;

[0093] The printing module 2 is arranged on the printer 1, and the printing module 2 includes:

[0094] The shifting mounting base 21 is connected to the x-axis of the printer 1;

[0095] The feeding part 22 is fixedly connected to the shifting mounting seat 21;

[0096] A heat dissipation aluminum block 23 is fixed to the bottom of the feed portion 22;

[0097] The throat 24 is fixed inside the heat dissipation aluminum block 23;

[0098] The nozzle 25 is fixed to the bottom of the throat 24;

[0099] The hot end 26 is fixed to the outside of the nozzle 25, and a heating element 261 is provided in the hot end 26;

[0100] A first fan 27 is fixed to one side of the heat dissipation aluminum block 23;

[0101] The second fan 28 is fixed to the front side of the feeding part 22 and the heat dissipation aluminum block 23, and the bottom of the second fan 28 is fixedly connected to an air guide housing 281;

[0102] A buffer 29 connected to the top of the feed portion 22;

[0103] A cooling mechanism 3, which is arranged at one side of the printer 1 and is suitable for cooling the printing module 2;

[0104] A first feeding device 4 is disposed at the back of the printer 1 and is suitable for feeding materials to the printing module 2;

[0105] The second feeding device 5 is arranged outside the printer 1 ; the second feeding device 5 is suitable for feeding materials to the printing module 2 .

[0106] Specifically, the present application forms a highly integrated printing system by setting a printing module 2 on the x-axis of the printer 1, and adopting a modular design concept to configure core components such as a feed part 22, a heat dissipation aluminum block 23, a throat 24, a nozzle 25 and a hot end 26. The heating element 261 arranged in the hot end 26 provides precise heating control, and the dual air cooling system of the first fan 27 and the second fan 28, as well as the precise guide design equipped with the air guide housing 281, realizes all-round air flow control. At the same time, the water cooling function of the cooling mechanism 3 is innovatively designed, which can work in conjunction with the air cooling system or operate independently, greatly improving the accuracy and adaptability of temperature control. In addition, through the dual feeding system design of the first feeding device 4 and the second feeding device 5, the innovative material changing method of first drawing and then feeding is adopted, which completely avoids the problems of uneven incision and incomplete cutting that may occur in the traditional cutter material changing method. This cutter-free design not only simplifies the structure and reduces maintenance costs, but also significantly improves the material switching efficiency and printing quality during multi-color printing. The overall design fully considers the actual application needs and realizes efficient, stable and reliable multi-color printing function.

[0107] The inner wall of the throat 24 is provided with a polytetrafluoroethylene coating, the inner wall finish of the nozzle 25 and the throat 24 is ra0.1-ra0.8, and the thickness of the throat (24) wall is 0.1-0.5mm. Specifically, the inner wall of the throat 24 can also be coated with a high temperature resistant and anti-adhesion coating of other materials.

[0108] Specifically, the present application adopts a number of innovative technologies in the design of the throat 24. First, by setting a polytetrafluoroethylene coating on the inner wall of the throat 24, using its excellent anti-adhesion performance, the problem of adhesion and clogging of the printing material during the transportation process is effectively prevented. At the same time, the inner wall finish of the nozzle 25 and the throat 24 is precisely controlled within the range of ra0.1-ra0.8. This precision machining index ensures the surface quality of the material delivery channel and further reduces the risk of material adhesion and clogging. In addition, the thickness of the throat 24 wall is designed to be within the range of 0.1-0.5mm. This specific thickness design provides the best thermal conductivity while ensuring strength, ensuring that the heating and cooling effects can be quickly transferred to the printing material. These refined designs not only greatly improve the fluency and stability of the printing process, but also significantly extend the service life of the equipment and reduce the frequency and difficulty of daily maintenance. At the same time, this design also provides better adaptability for the use of different types of printing materials, ensuring the quality stability and molding accuracy of the final printed product.

[0109] Reference Manual Attached Figure 8 , Instruction Manual Figure 10-11 , the buffer 29 comprises:

[0110] The wire feeding block 291 is fixed to the top of the feeding part 22, and the inner side of the wire feeding block 291 is hollow;

[0111] The upper shell 292 is sleeved on the outer side of the upper end of the wire feeding block 291. The length and width of the inner side of the upper shell 292 are respectively adapted to the length and width of the wire feeding block 291. A plurality of wire feeding holes 2921 are formed through the top of the upper shell 292.

[0112] A limit switch 293 is fixed to the lower end surface of the wire feeding block 291;

[0113] The upper shell 292 triggers the limit switch 293 by moving downward.

[0114] Specifically, during use, multiple consumables of different colors can enter the upper shell 292 through different wire feed holes 2921. When a consumable of a certain color is required for printing, the consumable of that color enters the wire feed block 291, and then the consumable passes through the inside of the feed part 22 and the inside of the throat 24 in turn. The consumable is then heated in the hot end 26, and is output through the nozzle 25 after being heat-melted to achieve printing.

[0115] Specifically, the number of feed channels at the inner upper end of the wire feed block 291 matches the number of wire feed holes 2921. Figure 8 A pneumatic connector is installed in the wire entry hole 2921, and the pneumatic connector can be used to connect the Teflon tube.

[0116] Specifically, the buffer 29 of the present invention adopts an intelligent structural design, and realizes the real-time monitoring and automatic replenishment functions of consumables through the clever cooperation of the wire feed block 291, the upper shell 292 and the limit switch 293. Among them, the wire feed block 291 is fixed to the top of the feed part 22 and adopts a hollow design, which provides a good guiding channel for the consumables. The socket structure of the upper shell 292 and the wire feed block 291 ensures the stability of the movement. The multiple groups of wire feed holes 2921 arranged on the top not only provide a guiding effect for material transportation, but also realize the possibility of multi-channel feeding. When in use, during the downward transportation of the consumables in the buffer 29, due to the contact between the consumables and the upper shell 292, the consumables will slowly drive the upper shell 292 to move downward until the bottom of the upper shell 292 contacts the limit switch 293, thereby triggering the limit switch 293, and controlling the first feeding device 4 and the second feeding device 5 through the limit switch 293 to transport a certain amount of consumables into the buffer 29, thereby realizing the automatic replenishment of consumables, avoiding printing interruptions or printing quality problems caused by lack of materials during the printing process. This intelligent automatic replenishment mechanism not only improves the continuity and automation of the printing process, but also greatly reduces the need for manual intervention and improves printing efficiency. At the same time, the design has high reliability and fast response speed, ensuring the timeliness and stability of material supply during multi-color printing.

[0117] Specifically, when in use, after the limit switch 293 is triggered by the upper shell 292, since the printing speed of the consumables is lower than the supply speed of the consumables, when the consumables come into contact with the upper shell 292, the force of the consumables pushes the upper shell 292 to slowly move upward for a distance, so that the upper shell 292 is separated from the limit switch 293. Thus, automatic control of the upper shell 292 is achieved through the consumables.

[0118] Reference Manual Attached Figure 1-2 And the instruction manual Figure 17-18 , the cooling mechanism 3 comprises:

[0119] A cooling end 31 is provided at one side of the printer 1;

[0120] A cooling system 32 is provided in the cooling end 31;

[0121] A water tank 33 is arranged in the cooling end 31, and a circulating water pump 331 is installed in the water tank 33;

[0122] The cold end output pipe 34 and the cold end input pipe 35 are both connected to the cold supply end 31 .

[0123] Specifically, in addition to the traditional air cooling technology, the present application uses the cooling end 31 as the core component of the entire cooling system, and integrates the cold air system 32 and the water tank 33 inside to form a complete refrigeration cycle system.

[0124] Specifically, the cold end output pipe 34 and the cold end input pipe 35 are made of a deformable hose material.

[0125] In some embodiments, refer to the attached specification Figure 3 The water tank 33 stores coolant, the input end of the circulating water pump 331 is connected to the bottom of the water tank 33, and the output end of the circulating water pump 331 is connected to the cold end output pipe 34, and the cold end input pipe 35 is connected to the water tank 33, so that the coolant is delivered to the printing module 2 through the circulating water pump 331 and the cold end output pipe 34, and then the coolant in the printing module 2 is delivered back to the water tank 33 through the cold end input pipe 35, thus, a closed-loop water circuit is formed by the circulating water pump 331, the cold end output pipe 34, the cold end input pipe 35, and the cooling channel 232. This water cooling system design can not only provide a continuous and stable cooling effect, but also can accurately control the cooling intensity by adjusting the water pump speed according to the characteristics of different printing materials and ambient temperature conditions. In addition, the design of the closed-loop water circuit also has good safety and reliability, which greatly extends the service life of the system.

[0126] In some embodiments, refer to the attached specification Figure 4The cooling system 32 is composed of a compressor, a refrigerant, a condenser, a filter, an expansion valve and an evaporator. The cooling system 32 as a refrigeration system is already a prior art and will not be described in detail here. The output end of the cooling system 32 is connected to the cold end output pipe 34. The cooling system 32 generates continuous and stable cold air through the phase change cycle of the refrigerant, and transports it to the cooling channel 232 through the cold end output pipe 34. This design has multiple technical advantages: First, the cold air generated by the cooling system 32 can quickly reduce the temperature of the cooling channel 232 to a level far below the ambient temperature, providing a stronger cooling capacity. This It is crucial for the rapid cooling of high-temperature printing materials. Secondly, the cooling capacity of the cooling system 32 can be precisely adjusted through the control system. It can automatically adjust the cooling power according to the characteristics of different printing materials and ambient temperature conditions to achieve intelligent temperature control. At the same time, the system can also adjust the cooling output in real time according to the changes in printing speed, while ensuring the printing quality and avoiding energy waste caused by overcooling. In addition, the cooling system 32 has a faster temperature response characteristic than the traditional water cooling system, and can achieve rapid cooling, which is particularly important for multi-color printing processes that require frequent switching of different printing temperatures. This active cooling method greatly improves the temperature control accuracy and stability of the printing process, not only ensuring the dimensional accuracy and surface quality of the printed products, but also significantly improving the process adaptability and reliability of multi-color printing.

[0127] Specifically, compared with the traditional single air cooling system, the design of the cooling mechanism 3 has higher heat dissipation efficiency and more precise temperature control capability, which effectively prevents the thermal degradation of the printing material under high temperature working conditions, and also avoids the warping deformation of the printed part caused by uneven cooling.

[0128] Specifically, the present application designs a multiple cooling system, including air cooling, water cooling and gas cooling, which can be flexibly switched or worked together according to actual printing needs. Among them, the reasonable arrangement of the first fan 27 and the second fan 28 provides a full range of air cooling effects, and the outlet of the air guide shell 281 faces the bottom of the nozzle 25, thereby cooperating with the guiding function of the air guide shell 281 to achieve rapid prototyping of printed products.

[0129] Reference Manual Attached Figure 8-9, a plurality of groups of heat dissipation fins 231 are integrally connected to the surface of the heat dissipation aluminum block 23, a cooling channel 232 is arranged on the inner side of the heat dissipation aluminum block 23, and the cooling channel 232 is in a horizontal "U"-shaped structure, and the cooling channel 232 passes through the outer side of the throat 24, and the openings at both ends of the cooling channel 232 are respectively connected to the cold end output pipe 34 and the cold end input pipe 35. Specifically, by designing multiple groups of heat dissipation fins 231 on the surface of the heat dissipation aluminum block 23, the heat dissipation area is significantly increased, and the natural convection heat dissipation effect is improved. At the same time, the innovative horizontal "U"-shaped cooling channel 232 design is adopted inside the heat dissipation aluminum block 23, which not only optimizes the flow path of the coolant, but also ensures that the cooling channel 232 can fully surround the outer side of the throat 24 to achieve the maximum heat exchange effect. When performing water cooling, the cold end output pipe 34 and the cold end input pipe 35 should be respectively connected to the openings at both ends of the cooling channel 232. When the incoming cold air dissipates heat, the cold end output pipe 34 can be connected to one of the openings of the cooling channel 232, while the other opening of the cooling channel 232 is kept for exhaust. This composite heat dissipation structure design fully utilizes the dual heat dissipation advantages of natural convection and forced convection, can quickly and evenly remove heat, and effectively prevents local overheating.

[0130] In some embodiments, refer to the attached specification Figure 26-27 When the cooling mechanism 3 is not in use, the printing module 2 can also dissipate heat through the first fan 27 provided thereon.

[0131] Reference Manual Attached Figure 1-2 , Instruction Manual Figure 5 And the instruction manual Fig.12 , the first feeding device 4 comprises:

[0132] The bottom frame 41 is fixed to the lower end of the back of the printer 1. A plurality of material tray partitions 411 are integrally connected to the inner side of the bottom frame 41. A plurality of material tray placement areas 412 are formed by the plurality of material tray partitions 411.

[0133] Two groups of suspension shafts 42 are fixedly connected to the inner side of the bottom frame 41 at intervals, and the suspension shafts 42 are fixedly inserted into a plurality of groups of material tray partitions 411;

[0134] A plurality of groups of first consumable material trays 43 are respectively placed in a plurality of groups of material tray placement areas 412, and the first consumable material trays 43 are connected to the suspension shaft 42;

[0135] A plurality of first feeding motors 44 are equidistantly arranged at the upper back of the printer 1;

[0136] A plurality of feeding component racks 45 are connected to a plurality of first feeding motors 44 respectively. A first transmission part 451 is movably provided inside the feeding component rack 45. The first transmission part 451 is fixedly connected to the motor shaft of the first feeding motor 44. An adjusting rack 453 is rotatably connected to the feeding component rack 45. A second transmission part 452 is rotatably connected to the inner side of the adjusting rack 453 via a rotating shaft. A gasket 456 is fixedly connected to the upper end of the back of the adjusting rack 453.

[0137] A protective rear cover 46 is fixed to the upper end of the back of the printer 1, and a plurality of first feeding motors 44 and a plurality of feeding component racks 45 are arranged on the inner side of the protective rear cover 46;

[0138] A plurality of adjustment screws 47 are inserted and connected to the back of the protective rear cover 46 and the gasket 456 through a threaded structure.

[0139] Specifically, the first feeding device 4 of the present invention adopts a modular combination design. The chassis 41 is fixed to the lower end of the back of the printer 1, and a plurality of independent tray placement areas 412 are formed by the tray partitions 411 arranged at intervals inside, so as to realize the orderly storage of multiple groups of consumables. The setting of the two sets of suspension shafts 42 not only supports the structural strength of the tray partitions 411, but also provides stable rotation support for the first consumable tray 43. By equidistantly arranging multiple sets of first feeding motors 44 at the upper end of the back of the printer 1, in conjunction with the first transmission part 451 in the feeding assembly frame 45 and the second transmission part 452 on the adjustment frame 453, a precise transmission system is formed. The design of the protective rear cover 46 not only plays a protective role, but also realizes the precise adjustment of the transmission parts by cooperating with the adjusting screw 47. The whole design is not only compact in structure and high in space utilization, but also easy to operate and maintain, which significantly improves the stability and reliability of the consumable supply during multi-color printing. At the same time, the modular design also provides convenient conditions for subsequent expansion and maintenance.

[0140] Reference Manual Attached Figure 13-16The first transmission part 451 and the second transmission part 452 are connected by meshing transmission, and an annular groove 454 is opened in the surface of the first transmission part 451 and the second transmission part 452, and the inner wall of the annular groove 454 is in a regular annular array and is integrally connected with a plurality of groups of anti-slip teeth 455. Specifically, the meshing transmission structure of the first transmission part 451 and the second transmission part 452 ensures the transmission accuracy of the feeding system. Annular grooves 454 are designed on the surfaces of the two transmission parts, and anti-slip teeth 455 are regularly arranged on the inner walls of the grooves. This tooth design not only increases the contact area with the consumables and improves the transmission torque, but also effectively prevents the consumables from slipping. The anti-slip teeth 455 distributed in a ring array provide the advantage of multi-point simultaneous engagement, greatly improving the stability and reliability of the transmission, and ensuring the accuracy and durability of the consumables conveying process. When in use, when the first transmission part 451 and the second transmission part 452 are meshed for transmission, the two groups of annular grooves 454 are arranged close to each other, and the consumables are in the two groups of annular grooves 454 at this time. Thus, stable conveying of the consumables is achieved through the two groups of annular grooves 454 and the anti-slip teeth 455.

[0141] Reference Manual Attached Figure 14-16 An elliptical hole 4531 is formed in the upper end of the adjusting frame 453, and the adjusting screw 47 is inserted into the elliptical hole 4531. A first spring 471 is sleeved on the outer side of the adjusting screw 47. The first spring 471 is connected between the gasket 456 and the inner wall of the protective rear cover 46. The adjusting frame 453 is rotated to make the first transmission part 451 and the second transmission part 452 mesh and be connected.

[0142] Specifically, an elliptical hole 4531 is provided at the upper end of the adjustment frame 453, and the adjustment screw 47 is inserted therein, and the width of the elliptical hole 4531 is greater than the diameter length of the threaded portion of the adjustment screw 47, so that the position adjustable function of the transmission component is realized. The first spring 471 forms an adjustment system with elastic compensation effect. Since the first spring 471 has an elastic force on the adjustment frame 453, the first transmission part 451 and the second transmission part 452 can be stably engaged and connected, and since the adjustment frame 453 can be rotated and adjusted to an appropriate position, when facing the transmission requirements of consumables of different diameters, the adjustment frame 453 and the second transmission part 452 can be adaptively adjusted. Therefore, the gap change of the consumables caused by temperature change or long-term use is automatically compensated by the elastic structure, ensuring that the transmission component always maintains the best meshing state. At the same time, the setting of the first spring 471 can not only provide appropriate preload force to ensure the stability of the transmission, but also play a role of buffering and shock absorption during the working process, effectively extending the service life of the equipment.

[0143] In some embodiments, refer to the attached specification Figure 1-2The printing module 2 can be fed by the first feeding device 4. A plurality of through holes for the consumables to pass through are provided in the top and bottom of the protective rear cover 46. When in use, a plurality of first consumable material trays 43 are placed in different tray placement areas 412, and then the consumables are passed through the inner side of the protective rear cover 46 and into the wire entry hole 2921 on the upper shell 292. When the limit switch 293 is triggered, the first feeding motor 44 drives the first transmission part 451 to rotate a certain angle, thereby realizing one-time quantitative feeding.

[0144] Reference Manual Attached Figure 17-21 , the second feeding device 5 comprises:

[0145] A remote material supply box 51, wherein both sides of the remote material supply box 51 are provided with a receiving cavity 511, and two sets of wire drum shafts 512 are connected in the receiving cavity 511, and a second consumable material disk 513 is installed on the wire drum shaft 512;

[0146] Two groups of electric-controlled wire extrusion boxes 52 are respectively fixed to the inner walls of the two groups of accommodating chambers 511. Two groups of second feeding motors 521 are fixedly arranged inside the electric-controlled wire extrusion boxes 52. Slide grooves 522 are provided in the top and bottom of the electric-controlled wire extrusion boxes 52. Slide blocks 523 are slidably connected in the slide grooves 522. Square clips 524 are fixedly connected inside the slide grooves 522. A second spring 525 is fixedly connected between the slide block 523 and the inner wall of the slide groove 522. A wire threading channel 528 is transversely penetrated in the upper and lower ends of the electric-controlled wire extrusion boxes 52. The wire threading channel 528 is connected to the slide groove 522.

[0147] Four groups of outlet tubes 53 are respectively inserted into the remote feed box 51, and two groups of outlet tubes 53 are fixedly inserted into each group of electric-controlled wire extrusion box 52;

[0148] The two sets of box covers 54 are flipped and connected to the two sides of the remote feeding box 51 through hinges.

[0149] Specifically, the remote feed box 51 realizes efficient storage and transportation of consumables by arranging accommodating chambers 511 on both sides and installing the wire reel shaft 512 and the second consumable material reel 513 therein. The design of the two sets of electric-controlled wire extrusion boxes 52 adopts a precise mechanical transmission structure, and provides power output through two sets of built-in second feed motors 521. The chute 522 opened at the top and bottom of the electric-controlled wire extrusion box 52 cooperates with the sliding mechanism of the slider 523 and the square card 524 to realize stable and reliable feeding control. The second spring 525 arranged between the slider 523 and the inner wall of the chute 522 provides the necessary elastic compensation effect. The setting of the four sets of pass-through tubes 53 provides a reliable guide channel for the consumables, and the two sets of box covers 54 connected by hinges facilitate the replacement and daily maintenance of the consumables. This remote feeding design not only expands the consumable supply capacity of the printer 1, but also improves the scope of application of the equipment, and is particularly suitable for long-term printing tasks that require large-capacity and multi-color consumables. At the same time, the modular design concept also provides convenient conditions for the upgrade and expansion of the equipment.

[0150] Reference Manual Attached Figure 22-25 The width of the slider 523 is adapted to the width of the slide groove 522, and the width of the inner side of the slider 523 is adapted to the width of the square card 524. The inner side of the slider 523 is rotatably connected to the first wire wheel 526 through a rotating shaft, and the motor shaft of the second feeding motor 521 is fixedly connected to the second wire wheel 527. The second wire wheel 527 is connected to the inner side of the slider 523. The wire threading channel 528, the first wire wheel 526, the second wire wheel 527 and the outlet tube 53 are suitable for wire threading of consumables.

[0151] Specifically, the surfaces of the first wire feeding wheel 526 and the second wire feeding wheel 527 are also provided with an annular groove 454 and anti-slip teeth 455 .

[0152] Specifically, the movement accuracy of the feeding mechanism is ensured by accurately designing the matching dimensions of the slider 523 and the slide 522. The width of the inner side of the slider 523 is adapted to the width of the square card 524, so that the square card 524 has a positioning effect on the slider 523, avoiding shaking and jamming during movement. The first wire wheel 526 set on the inner side of the slider 523 through the rotating shaft forms a complete transmission chain with the second wire wheel 527 driven by the second feeding motor 521. This double-wheel transmission design increases the contact area with the consumables and provides a more stable driving force. The design of the wire threading channel 528 is precisely matched with the positions of the first wire wheel 526 and the second wire wheel 527 to ensure that the consumables can pass smoothly and be reliably clamped. The second spring 525 exerts an elastic force on the slider 523, so that the first wire wheel 526 and the second wire wheel 527 can be stably connected, and the second spring 525 can also appropriately adjust the position of the slider 523 and the second wire wheel 527 to meet the needs of conveying consumables of different specifications. The design of the wire feeding mechanism of the entire second feeding device 5 not only takes into account the stability and reliability of the movement, but also fully considers the maintenance needs in actual use. The accuracy of consumable material delivery is further guaranteed by the guiding effect of the threading tube 53. This precise mechanical transmission design significantly improves the reliability of remote feeding and the accuracy of consumable material delivery, provides a stable material supply guarantee for multi-color printing, and also improves the overall performance and service life of the equipment. In addition, the modular characteristics of the design also facilitate later maintenance and replacement, greatly improving the practicality of the equipment.

[0153] In some embodiments, refer to the attached specification Figure 17-18 The printing module 2 can be fed through the second feeding device 5. When in use, multiple second consumable material disks 513 are placed on different wire disk shafts 512 respectively, and then the consumables pass through the wire threading channel 528 into the slide groove 522. The consumables are transmitted by the first wire wheel 526 and the second wire wheel 527. Then the consumables pass through the outlet tube 53 and enter the wire feeding hole 2921 on the upper shell 292. When the limit switch 293 is triggered, the first wire wheel 526 is driven to rotate a certain angle by the second feeding motor 521, thereby realizing one-time quantitative feeding.

[0154] Specifically, the printer 1 is provided with a corresponding control terminal, which is connected to the limit switch 293, the first feeding motor 44, and the second feeding motor 521 by electric wires. The limit switch 293 can send data to the control terminal, thereby controlling the first feeding motor 44 and the second feeding motor 521 through the control terminal to realize feeding.

[0155] Specifically, refer to the instructions for Figure 1-2 And the instruction manual Fig.18When in use, the wire inlet hole 2921 can be connected to the top of the protective rear cover 46 using a Teflon tube, or the wire inlet hole 2921 can be connected to the outlet tube 53 using a Teflon tube. First, the Teflon tube has excellent high temperature resistance and self-lubricating properties, and its extremely low friction coefficient of the inner wall can significantly reduce the resistance of the consumables during transportation, ensuring the smooth transportation of the printing materials. Secondly, the good flexibility of the Teflon tube enables it to form a suitable arc between different installation positions, avoiding sharp turns of the consumables during transportation, and effectively reducing the wire feeding resistance and consumables wear. At the same time, the excellent chemical stability and anti-adhesion properties of the Teflon tube can effectively prevent the adhesion and clogging of the printing materials during transportation, and improve the reliability and maintenance convenience of the equipment. The design also takes into account the need for rapid material replacement during multi-color printing. Through the guiding effect of the Teflon tube, the consumables can be quickly threaded and replaced, which improves the printing efficiency. In addition, the use of the Teflon tube also reduces the wear of the consumables during transportation, prolongs the service life of the printing materials, and also reduces the maintenance frequency of the equipment. This flexible and efficient connection method provides a better material delivery solution for the multi-color printing system, significantly improving the overall performance and user experience of the equipment.

[0156] Specifically, when it is necessary to change the color of the printing, the first feeding motor 44 and the second feeding motor 521 can be used to reverse the motor shaft to control the reverse feeding of the consumables, so that the consumables in the printing module 2 are pumped upward. At this time, the printer 1 can control the printing module 2 to move outside the printing area, print the consumables of the original color below the throat 24, and then control the printing module 2 to move into the printing area. Then, the first feeding motor 44 and the second feeding motor 521 corresponding to the consumables that need to change the color are fed again, so that the consumables of the new color are transported to the feeding part 22 for printing. Through the innovative cutter-free material change design, the material change method of first drawing and then feeding is adopted, which completely avoids the problems of incomplete cutting of consumables and uneven cuts that may be caused by traditional cutter devices, and improves the reliability of material change and printing quality.

[0157] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Cutterless multi-color printing device, characterized in that: The printing device comprises: Printer (1); A printing module (2) is arranged on the printer (1), and the printing module (2) comprises: A shifting mounting seat (21) connected to the x-axis of the printer (1); A feeding portion (22) fixedly connected to the shifting mounting seat (21); A heat dissipation aluminum block (23) fixed to the bottom of the feed portion (22); A throat (24) fixed inside the heat dissipation aluminum block (23); A nozzle (25) is fixed to the bottom of the throat (24); A hot end (26) is fixed to the outside of the nozzle (25), and a heating element (261) is provided in the hot end (26); A first fan (27) is fixed to one side of the heat dissipation aluminum block (23); A second fan (28) is fixed to the front side of the feed portion (22) and the heat dissipation aluminum block (23), and the bottom of the second fan (28) is fixedly connected to an air guide housing (281); A buffer (29) connected to the top of the feeding part (22); A cooling mechanism (3), the cooling mechanism (3) being arranged on one side of the printer (1), the cooling mechanism (3) being suitable for cooling the printing module (2); A first material feeding device (4) is arranged at the back of the printer (1), and the first material feeding device (4) is suitable for feeding material to the printing module (2); The second material supply device (5) is arranged on the outside of the printer (1); the second material supply device (5) is suitable for supplying material to the printing module (2).

2. The cutterless multi-color printing device according to claim 1, characterized in that: The inner wall of the throat (24) is provided with a polytetrafluoroethylene coating, the inner wall smoothness of the nozzle (25) and the throat (24) is ra0.1-ra0.8, and the wall thickness of the throat (24) is 0.1-0.5 mm.

3. The cutterless multi-color printing device according to claim 1, characterized in that: The buffer (29) comprises: A wire feeding block (291) is fixed to the top of the feeding portion (22), and the inner side of the wire feeding block (291) is hollow; An upper shell (292) is sleeved on the outer side of the upper end of the wire feeding block (291), the length and width of the inner side of the upper shell (292) are respectively adapted to the length and width of the wire feeding block (291), and a plurality of groups of wire feeding holes (2921) are provided through the top of the upper shell (292); A limit switch (293) fixed to the lower end surface of the wire feeding block (291); Wherein, the upper shell (292) triggers the limit switch (293) by moving downward.

4. The cutterless multi-color printing device according to claim 1, characterized in that: The cooling mechanism (3) comprises: A cooling end (31) is arranged on one side of the printer (1); A cooling system (32) is arranged in the cooling end (31); A water tank (33) is arranged in the cooling end (31), and a circulating water pump (331) is installed in the water tank (33); The cold end output pipe (34) and the cold end input pipe (35) are both connected to the cold supply end (31).

5. The cutterless multi-color printing device according to claim 4, characterized in that: A plurality of groups of heat dissipation fins (231) are integrally connected to the surface of the heat dissipation aluminum block (23). A cooling channel (232) is provided on the inner side of the heat dissipation aluminum block (23). The cooling channel (232) is in a horizontal "U"-shaped structure and passes through the outer side of the throat (24). The openings at both ends of the cooling channel (232) are respectively connected to the cold end output pipe (34) and the cold end input pipe (35).

6. The cutterless multi-color printing device according to claim 1, characterized in that: The first feeding device (4) comprises: A base frame (41) is fixed to the lower end of the back of the printer (1), and a plurality of material tray partitions (411) are integrally connected to the inner side of the base frame (41) at intervals, and a plurality of material tray placement areas (412) are formed on the inner side of the base frame (41) through the plurality of material tray partitions (411); Two groups of suspension shafts (42) are fixedly connected to the inner side of the base frame (41) at intervals, and the suspension shafts (42) are fixedly inserted into a plurality of groups of the material tray partitions (411); A plurality of groups of first consumable material trays (43) are respectively placed in a plurality of groups of the tray placement areas (412), and the first consumable material trays (43) are connected to the suspension shaft (42); A plurality of first feeding motors (44) are equidistantly arranged at the upper back end of the printer (1); A plurality of feeding component frames (45) are respectively connected to a plurality of first feeding motors (44); a first transmission part (451) is movably provided inside the feeding component frames (45); the first transmission part (451) is fixedly connected to the motor shaft of the first feeding motor (44); an adjusting frame (453) is rotatably connected to the feeding component frames (45); a second transmission part (452) is rotatably connected to the inside of the adjusting frame (453) via a rotating shaft; a gasket (456) is fixedly connected to the upper end of the back of the adjusting frame (453); A protective rear cover (46) is fixed to the upper end of the back of the printer (1), and a plurality of groups of the first feeding motors (44) and a plurality of groups of feeding component racks (45) are arranged on the inner side of the protective rear cover (46); A plurality of sets of adjusting screws (47) are inserted and connected in the back of the protective rear cover (46) and the gasket (456) through a threaded structure.

7. The cutterless multi-color printing device according to claim 6, characterized in that: The first transmission part (451) and the second transmission part (452) are connected via meshing transmission, and an annular groove (454) is provided in the surface of the first transmission part (451) and the second transmission part (452), and the inner wall of the annular groove (454) is in a regular annular array and is integrally connected with a plurality of groups of anti-slip teeth (455).

8. The cutterless multi-color printing device according to claim 7, characterized in that: An elliptical hole (4531) is formed in the upper end of the adjusting frame (453), the adjusting screw (47) is inserted into the elliptical hole (4531), a first spring (471) is sleeved on the outer side of the adjusting screw (47), the first spring (471) is connected between the gasket (456) and the inner wall of the protective rear cover (46), and the adjusting frame (453) is rotated to make the first transmission part (451) and the second transmission part (452) mesh and transmit to each other.

9. The cutterless multi-color printing device according to claim 1, characterized in that: The second feeding device (5) comprises: A remote material supply box (51), wherein both sides of the remote material supply box (51) are provided with a receiving cavity (511), two groups of wire drum shafts (512) are connected in the receiving cavity (511), and a second consumable material disk (513) is installed on the wire drum shaft (512); Two groups of electrically controlled wire extrusion boxes (52) are respectively fixed to the inner walls of the two groups of the accommodating chambers (511), two groups of second feeding motors (521) are fixedly arranged inside the electrically controlled wire extrusion boxes (52), and slide grooves (522) are provided in the top and bottom of the electrically controlled wire extrusion boxes (52), a slider (523) is slidably connected in the slide groove (522), a square card (524) is fixedly connected to the inside of the slide groove (522), a second spring (525) is fixedly connected between the slider (523) and the inner wall of the slide groove (522), and a wire threading channel (528) is transversely opened in the upper and lower ends of the electrically controlled wire extrusion boxes (52), and the wire threading channel (528) is connected to the slide groove (522); Four groups of outlet tubes (53) are respectively inserted into the remote feed box (51), and two groups of the outlet tubes (53) are fixedly inserted into each group of the electric-controlled wire extrusion box (52); Two sets of box covers (54) are flipped and connected to two sides of the remote material supply box (51) through hinges.

10. The cutterless multi-color printing device according to claim 9, characterized in that: The width of the slider (523) is matched with the width of the slide groove (522), and the width of the inner side of the slider (523) is matched with the width of the square card (524). The inner side of the slider (523) is rotatably connected to the first wire-moving wheel (526) via a rotating shaft. The motor shaft of the second feeding motor (521) is fixedly connected to the second wire-moving wheel (527). The second wire-moving wheel (527) is connected to the inner side of the slider (523). The wire-moving channel (528), the first wire-moving wheel (526), ​​the second wire-moving wheel (527) and the outlet tube (53) are suitable for wire-moving consumables.

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