Cutter-free multicolor printing device

Abstract

The utility model discloses a cutter-free multicolor printing device. The printing device comprises a printer; 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] This utility model relates to the field of additive manufacturing technology, specifically to a bladeless multicolor printing device. Background Technology

[0002] 3D printing technology, as a rapid prototyping technology, is widely used in industrial manufacturing, medical devices, construction engineering, education and scientific research, and other fields. Currently, multi-color 3D printers on the market are mainly divided into two structural types: single-head multi-feed and multi-head. The former uses multiple feed channels on a single printhead and is equipped with a cutting device to achieve the switching of different colors, while the latter uses multiple independent printheads to handle the printing of different colors. These printers are typically equipped with a filament 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 filament feeding system is responsible for material delivery and switching, the temperature control system ensures that the printing material reaches a suitable molten state, and the cooling system prevents the printhead from overheating and ensures the quality of the printed product.

[0003] However, existing multicolor 3D printers have many problems: First, the use of a cutting blade structure for filament cutting can easily result in incomplete cutting or uneven cuts, affecting filament changing and print quality; second, traditional cooling methods often rely on single-mode air cooling, which is difficult to adapt to the temperature control requirements of different printing materials and environmental conditions, easily leading to improper curing or deformation of the printing material; third, existing filament feeding systems are complex in structure and inconvenient to adjust, and are prone to blockage or poor filament feeding during filament changing, seriously affecting printing efficiency and product quality; more importantly, existing technologies lack effective filament monitoring and automatic replenishment mechanisms, which can easily lead to printing interruptions due to insufficient filament, reducing printing efficiency and automation; in addition, the fixed design of the feeding device limits the printer's flexibility and applicability, making it difficult to meet the printing needs of different scenarios; finally, the temperature control systems in existing technologies often have a lag in response, making it difficult to achieve precise temperature regulation, easily causing thermal degradation of the printing material or warping and deformation of the printed parts.

[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 filament feeding system, flexible and diverse material feeding methods, and precise temperature control, in order to solve various technical problems existing in the current technology and improve the quality and efficiency of multi-color 3D printing. Utility Model Content

[0005] The purpose of this invention is to provide a bladeless multi-color printing device to solve the problems of existing multi-color 3D printers mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a bladeless multi-color printing device, the printing device comprising:

[0007] printer;

[0008] A printing module, disposed on the printer, the printing module comprising:

[0009] A tilt-shift mounting bracket is connected to the x-axis of the printer;

[0010] The feeding section is fixedly connected to the shifting shaft mounting base;

[0011] A heat-dissipating aluminum block is fixed to the bottom of the feeding section;

[0012] The throat is fixed inside the heat dissipation aluminum block;

[0013] The nozzle is fixed to the bottom of the throat.

[0014] A hot end is fixed to the outside of the nozzle, and a heating element is provided inside the hot end;

[0015] The first fan is fixed to one side of the heat sink aluminum block;

[0016] The second fan is fixed to the front side of the feed section and the heat dissipation aluminum block, and the bottom of the second fan is fixedly connected to the air guide housing;

[0017] A buffer is connected to the top of the feed section;

[0018] A cooling mechanism is disposed on one side of the printer and is adapted to cool the printing module.

[0019] A first feeding device is disposed on the back of the printer, and the first feeding device is adapted to feed material to the printing module;

[0020] A second feeding device is disposed on the outside of the printer; the second feeding device is adapted to feed material to the printing module.

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

[0022] Preferably, the buffer includes:

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

[0024] The upper housing is sleeved on the upper outer side of the wire feed block. The length and width of the inner side of the upper housing are adapted to the length and width of the wire feed block, respectively. Several sets of wire feed holes are opened through the top of the upper housing.

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

[0026] The upper housing triggers the limit switch by moving downwards.

[0027] Preferably, the cooling mechanism includes:

[0028] The cooling supply end is located on one side of the printer;

[0029] The air conditioning system is installed inside the cooling end;

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

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

[0032] Preferably, a number of heat dissipation fins are integrally connected to the surface of the heat dissipation aluminum block, and a cooling channel is provided on the inner side of the heat dissipation aluminum block. The cooling channel has a horizontal "U" shape and passes through the outside of the throat pipe. The two 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 includes:

[0034] The base frame is fixed to the lower back of the printer. Several sets of tray partitions are integrally connected at intervals on the inner side of the base frame, and several tray placement areas are formed on the inner side of the base frame through the several sets of tray partitions.

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

[0036] Several sets of first consumable material trays are placed in several sets of the tray placement areas, and the first consumable material trays are connected to the suspension shaft;

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

[0038] Several sets of feeding component frames are respectively connected to several sets of the first feeding motors. A first transmission part is movably provided inside the feeding component frame. The first transmission part is fixedly connected to the motor shaft of the first feeding motor. An adjustment frame is rotatably connected to the feeding component frame. A second transmission part is rotatably connected to the inner side of the adjustment frame through a rotating shaft. A gasket is fixedly connected to the upper back of the adjustment frame.

[0039] A protective rear cover is fixed to the upper back of the printer, and several sets of the first feeding motors and several sets of feeding component frames are all arranged inside the protective rear cover.

[0040] Several sets of adjusting screws are threadedly connected to the back of the protective rear cover and the gasket.

[0041] Preferably, the first transmission part and the second transmission part are connected by meshing transmission, and both the first transmission part and the second transmission part have annular grooves on their surfaces. The inner walls of the annular grooves are integrally connected with several sets of anti-slip teeth in a regular annular array.

[0042] Preferably, an elliptical hole is provided through the upper end of the adjusting frame, the adjusting screw passes through the elliptical hole, and a first spring is sleeved on the outside of the adjusting screw. The first spring is connected between the gasket and the inner wall of the protective rear cover. Rotating the adjusting frame causes the first transmission part and the second transmission part to engage and transmit power.

[0043] Preferably, the second feeding device includes:

[0044] A remote feeding box, wherein there are receiving cavities on both sides of the remote feeding box, and two sets of wire spools are connected in the receiving cavities, and a second consumable material spool is installed on the wire spool.

[0045] Two sets of electrically controlled extrusion boxes are fixed to the inner walls of the two sets of receiving cavities, respectively. Two sets of second feeding motors are fixedly installed inside the electrically controlled extrusion boxes. Slide grooves are opened in the top and bottom of the electrically controlled extrusion boxes. A slider is slidably connected in the slide groove. A square clip is fixedly connected to the inner side of the slide groove. A second spring is fixedly connected between the slider and the inner wall of the slide groove. Threading channels are opened laterally through the upper and lower ends of the electrically controlled extrusion boxes. The threading channels are connected to the slide grooves.

[0046] Four sets of extrusion cylinders are respectively installed in the remote feeding box, and two sets of the above-mentioned extrusion cylinders are fixedly installed in each set of electrically controlled extrusion boxes;

[0047] Two sets of lids are connected to both sides of the remote feeding box by hinges.

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

[0049] Compared with the prior art, the beneficial effects of this utility model are:

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

[0051] 2) This application designs a multi-cooling system, including air cooling, water cooling, and gas cooling, which can be flexibly switched or worked in combination according to actual printing needs. The reasonable arrangement of the first and second fans provides an all-round air cooling effect, and with the guiding effect of the air guide shell, the printing products can be rapidly formed. The water cooling system, through the cooperation of water tank and circulating water pump, combined with the cooling channel design in the heat dissipation aluminum block, can achieve more precise temperature control. The air cooling system provides stronger cooling capacity, which is crucial for the rapid cooling of high-temperature printing materials. The surface of the heat dissipation aluminum block is also designed with multiple sets of heat dissipation fins to further improve heat dissipation efficiency. This multi-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 printing quality and efficiency.

[0052] 3) The filament feeding system of this 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 filament trays through the base frame, filament tray partition and other structures, and ensures the stability of filament 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 slippage during the printing process. The second feeding device adopts a remote feeding method, and realizes the precise delivery of consumables through the design of electronically controlled filament extrusion box and elastic structure. Both feeding devices can be adjusted according to actual needs, which greatly improves the adaptability and practicality of the equipment.

[0053] 4) The buffer design of this application has an intelligent consumable supply function. When there is insufficient consumable in the print head or when there is a shortage of material, the upper housing will slide down under the action of the consumable 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 consumable into the buffer, thereby realizing automatic replenishment of consumables and avoiding printing interruption or printing quality problems caused by material shortage during the printing process. At the same time, the elastic structure design of the slider, spring and other components in the electronically controlled extrusion box ensures the stability of the consumable 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, exhibiting strong practicality and reliability. Through innovative designs such as cutterless material changing, dual cooling, and dual feeding systems, it not only solves various problems in existing technologies but also achieves intelligent temperature control and stable filament feeding during multi-color printing, significantly improving the quality and efficiency of 3D printing. Furthermore, the modular design concept of this utility model provides convenient conditions for subsequent functional expansion and performance improvement, demonstrating strong technological advancement and promotional value. Attached Figure Description

[0055] Figure 1 This is a schematic diagram of a structure for the first feeding device of this application to feed materials to the printer;

[0056] Figure 2 This is a schematic diagram of another structure for the first feeding device of this application to feed materials to the printer;

[0057] Figure 3 A partial front sectional view of the cooling mechanism of this application when it is subjected to water cooling.

[0058] Figure 4 A partial front sectional view of the cooling mechanism of this application during air cooling heat dissipation;

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

[0060] Figure 6 This is a schematic diagram of a printing module according to this application;

[0061] Figure 7 This is another structural schematic diagram of the printing module of this application;

[0062] Figure 8 This is a front sectional view of the printing module of this application;

[0063] Figure 9 This is a schematic diagram of the structure of the heat dissipation aluminum block in this application;

[0064] Figure 10 This is a schematic diagram of one structure of the buffer in this application;

[0065] Figure 11 This is a schematic diagram of another structure of the buffer in this application;

[0066] Figure 12 This is a schematic diagram of the structure inside the front side of the protective rear cover of this application;

[0067] Figure 13 This is a schematic diagram of a structure of the material supply component rack of this application;

[0068] Figure 14This is a schematic diagram of another structure of the feeding assembly rack of this application;

[0069] Figure 15 This is a top view of the feed assembly rack of this application;

[0070] Figure 16 This is a schematic diagram of the structure of the first and second transmission parts of this application;

[0071] Figure 17 This is a schematic diagram of the second feeding device and printer of this application;

[0072] Figure 18 This is a schematic diagram of the structure of the second feeding device of this application feeding the printer;

[0073] Figure 19 This is a structural schematic diagram of the remote feeding box of this application;

[0074] Figure 20 This is a schematic diagram of the remote feeding box of this application after the box cover is removed;

[0075] Figure 21 This is a schematic diagram of another structure of the remote feeding box of this application after the box cover is removed;

[0076] Figure 22 This is a schematic diagram of the internal structure of one side of the electrically controlled extrusion box in this application;

[0077] Figure 23 This is a schematic diagram of the structure inside the other side of the electrically controlled extrusion box of this application;

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

[0079] Figure 25 This is a schematic diagram of the structure of the first and second wire feeding wheels in this application;

[0080] Figure 26 This is a schematic diagram of a structure in this application where heat dissipation is achieved solely through air cooling;

[0081] Figure 27 This is a schematic diagram of another structure when heat dissipation is achieved solely through air cooling in this application.

[0082] In the picture:

[0083] 1. Printer;

[0084] 2. Printing module; 21. Shift-axis mounting base; 22. Feed section; 23. Heat sink aluminum block; 231. Heat sink 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 feed block; 292. Upper housing; 2921. Wire feed hole; 293. Limit switch;

[0085] 3. Cooling mechanism; 31. Cooling 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. Material tray partition; 412. Material 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. Adjusting frame; 4531. Oval hole; 454. Annular groove; 455. Anti-slip teeth; 456. Shim; 46. Protective rear cover; 47. Adjusting screw; 471. First spring;

[0087] 5. Second feeding device; 51. Remote feeding box; 511. Receiving cavity; 512. Wire reel shaft; 513. Second consumable material reel; 52. Electrically controlled extrusion box; 521. Second feeding motor; 522. Slide groove; 523. Slider; 524. Square clip; 525. Second spring; 526. First wire feeding wheel; 527. Second wire feeding wheel; 528. Wire threading channel; 53. Wire threading cylinder; 54. Box cover. Detailed Implementation

[0088] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0089] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0090] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0091] Please see Figure 1-27 This utility model provides a technical solution: a bladeless multi-color printing device, the printing device comprising:

[0092] Printer 1;

[0093] Printing module 2, installed on printer 1, includes:

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

[0095] The feeding section 22 is fixedly connected to the shifting shaft mounting base 21;

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

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

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

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

[0100] The first fan 27 is fixed to one side of the heat sink 23;

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

[0102] Buffer 29 is connected to the top of feed section 22;

[0103] Cooling mechanism 3 is located on one side of printer 1 and is adapted to cool printing module 2.

[0104] The first feeding device 4 is located on the back of the printer 1 and is adapted to feed material to the printing module 2.

[0105] The second feeding device 5 is located on the outside of the printer 1; the second feeding device 5 is adapted to feed materials to the printing module 2.

[0106] Specifically, this application establishes a highly integrated printing system by setting a printing module 2 on the x-axis of printer 1 and configuring core components such as the feeding section 22, heat dissipation aluminum block 23, throat 24, nozzle 25, and hot end 26 using a modular design concept. The heating element 261 within the hot end 26 provides precise heating control, combined with a dual-air cooling system of the first fan 27 and the second fan 28, and a precise guiding design with an air guide housing 281, achieving comprehensive airflow control. Simultaneously, an innovative water-cooling function is designed for the cooling mechanism 3, which can work in conjunction with the air cooling system or operate independently, greatly improving the accuracy and adaptability of temperature control. Furthermore, through the dual-feeding system design of the first feeding device 4 and the second feeding device 5, an innovative material changing method of first drawing the filament and then feeding completely avoids problems such as uneven cuts and incomplete cutting that may occur in traditional cutter-based material changing methods. This cutter-free design not only simplifies the structure and reduces maintenance costs but also significantly improves material switching efficiency and print quality during multi-color printing. The overall design fully considers the needs of practical applications, achieving efficient, stable, and reliable multi-color printing functionality.

[0107] The inner wall of the throat 24 is coated with polytetrafluoroethylene. The smoothness of the inner walls 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 may also be coated with a high-temperature resistant and anti-adhesion coating of other materials.

[0108] Specifically, this application employs several innovative technologies in the design of the throat 24. First, by applying a polytetrafluoroethylene (PTFE) coating to the inner wall of the throat 24, its excellent anti-adhesion properties effectively prevent the adhesion and clogging of printing material during transport. Simultaneously, the surface finish of the inner walls of the nozzle 25 and the throat 24 is precisely controlled within the range of Ra0.1-Ra0.8. This precision machining ensures the surface quality of the material transport channel, further reducing the risk of material adhesion and clogging. Furthermore, the thickness of the throat 24 wall is designed within the range of 0.1-0.5 mm. This specific thickness design provides optimal thermal conductivity while ensuring strength, ensuring that heating and cooling effects are quickly transferred to the printing material. These refined designs not only significantly improve the smoothness and stability of the printing process but also significantly extend the service life of the equipment, reducing the frequency and difficulty of daily maintenance. At the same time, this design also provides better adaptability to the use of different types of printing materials, ensuring the quality stability and forming accuracy of the final printed product.

[0109] Reference manual attached Figure 8 Instruction manual attached Figure 10-11 Buffer 29 includes:

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

[0111] The upper housing 292 is sleeved on the upper outer side of the wire feed block 291. The length and width of the inner side of the upper housing 292 are adapted to the length and width of the wire feed block 291, respectively. Several sets of wire feed holes 2921 are opened through the top of the upper housing 292.

[0112] Limit switch 293 is fixed to the lower end surface of wire feed block 291;

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

[0114] Specifically, during use, multiple filaments of different colors can enter the upper housing 292 through different filament feed holes 2921. When a certain color of filament is needed for printing, that color of filament enters the filament feed block 291, and then the filament passes through the inner side of the feed section 22 and the inner side of the throat tube 24 in sequence. Then the filament is heated in the hot end 26, and after being melted, it is output through the printhead 25 to achieve printing.

[0115] Specifically, the number of feed channels on the upper inner side of the wire feed block 291 matches the number of wire feed holes 2921, as shown in the attached instruction manual. Figure 8 A pneumatic connector is installed inside the wire inlet 2921, which can be used to connect Teflon tubing.

[0116] Specifically, the buffer 29 of this utility model adopts an intelligent structural design. Through the ingenious cooperation of the wire feed block 291, the upper housing 292 and the limit switch 293, the real-time monitoring and automatic replenishment of consumables are realized. The wire feed block 291 is fixed to the top of the feeding part 22 and adopts a hollow design, which provides a good guiding channel for consumables. The sleeve structure between the upper housing 292 and the wire feed block 291 ensures the stability of movement. The multiple sets of wire feed holes 2921 set on its top not only provide a guiding function for material conveying, but also realize the possibility of multi-channel feeding. During use, as the consumable material is transported downwards within the buffer 29, its contact with the upper housing 292 slowly pulls the upper housing 292 downwards until its bottom contacts the limit switch 293. This triggers the limit switch 293, which then controls the first feeding device 4 and the second feeding device 5 to supply a certain amount of consumable material into the buffer 29. This achieves automatic consumable replenishment, preventing printing interruptions or quality issues caused by insufficient material. This intelligent automatic replenishment mechanism not only improves the continuity and automation of the printing process but also significantly reduces the need for manual intervention, thereby increasing printing efficiency. Furthermore, this design boasts high reliability and fast response, ensuring timely and stable material supply during multi-color printing.

[0117] Specifically, during use, after the limit switch 293 is triggered by the upper housing 292, since the printing speed of the consumable is less than the supply speed of the consumable, when the consumable comes into contact with the upper housing 292, the force of the consumable pushes the upper housing 292 to move slowly upward a certain distance, so that the upper housing 292 separates from the limit switch 293. Thus, the upper housing 292 is automatically controlled by the consumable.

[0118] Reference manual attached Figure 1-2 and instruction manual attached Figure 17-18 The cooling mechanism 3 includes:

[0119] Cooling end 31 is located on one side of printer 1;

[0120] The air conditioning system 32 is installed inside the cooling end 31;

[0121] A water tank 33 is installed inside the cooling end 31, and a circulating water pump 331 is installed inside the water tank 33.

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

[0123] Specifically, in addition to traditional air-cooling technology, this application uses the cooling end 31 as the core component of the entire cooling system, which integrates the air conditioning system 32 and the water tank 33 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 deformable flexible tubing.

[0125] In some embodiments, refer to the appendix to the 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, while the output end of the circulating water pump 331 is connected to the cold end output pipe 34. The cold end input pipe 35 is connected to the water tank 33. In this way, the coolant is delivered to the printing module 2 through the circulating water pump 331 and the cold end output pipe 34. Then, the coolant in the printing module 2 is returned 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 and the cold end input pipe 35, and the cooling channel 232. This water cooling system design not only provides a continuous and stable cooling effect, but also allows for precise control of the cooling intensity by adjusting the water pump speed according to the characteristics of different printing materials and ambient temperature conditions. In addition, the closed-loop water circuit design also has good safety and reliability, greatly extending the service life of the system.

[0126] In some embodiments, refer to the appendix to the specification. Figure 4The cooling system 32 consists of a compressor, refrigerant, condenser, filter, expansion valve, and evaporator. As a refrigeration system, the cooling system 32 is existing technology and will not be elaborated upon here. The output end of the cooling system 32 is connected to the cold end output pipe 34. The cooling system 32 generates a continuous and stable supply of cold air through the phase change cycle of the refrigerant and delivers it to the cooling channel 232 through the cold end output pipe 34. This design has several technical advantages: First, the cold air generated by the cooling system 32 can rapidly reduce the temperature of the cooling channel 232 to a level far below the ambient temperature, providing stronger cooling capacity. Rapid cooling of high-temperature printing materials is crucial. Secondly, the cooling capacity of the cooling system 32 can be precisely adjusted through the control system, automatically adjusting the cooling power according to the characteristics of different printing materials and ambient temperature conditions to achieve intelligent temperature control. Simultaneously, the system can adjust the cooling output in real time according to changes in printing speed, ensuring print quality while avoiding energy waste caused by over-cooling. Furthermore, compared to traditional water-cooling systems, the cooling system 32 has a faster temperature response, enabling rapid cooling, which is particularly important for multi-color printing processes that require frequent switching between different printing temperatures. This active cooling method greatly improves the temperature control accuracy and stability of the printing process, ensuring not only the dimensional accuracy and surface quality of printed products but also significantly improving the process adaptability and reliability of multi-color printing.

[0127] Specifically, compared to the traditional single air-cooling system, the design of the cooling mechanism 3 has higher heat dissipation efficiency and more precise temperature control, effectively preventing the thermal degradation of printing materials under high-temperature working conditions, and also avoiding warping and deformation of printed parts due to uneven cooling.

[0128] Specifically, this application designs a multi-cooling system, including air cooling, water cooling and air cooling, which can be flexibly switched or worked in combination according to actual printing needs. The reasonable arrangement of the first fan 27 and the second fan 28 provides an all-round air cooling effect. The outlet of the air guide housing 281 faces the bottom of the printhead 25, thereby cooperating with the guiding role of the air guide housing 281 to realize the rapid prototyping of printed products.

[0129] Reference manual attached Figure 8-9The surface of the heat dissipation aluminum block 23 is integrally connected with several sets of heat dissipation fins 231. A cooling channel 232 is provided inside the heat dissipation aluminum block 23, and the cooling channel 232 has a horizontal "U" shape structure. The cooling channel 232 passes through the outside of the throat pipe 24, and the two ends of the cooling channel 232 are connected to the cold end output pipe 34 and the cold end input pipe 35, respectively. Specifically, by designing multiple sets 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 inside the heat dissipation aluminum block 23 not only optimizes the flow path of the coolant but also ensures that the cooling channel 232 can fully surround the outside of the throat pipe 24, achieving maximum heat exchange effect. During water cooling, the cold end output pipe 34 and the cold end input pipe 35 should be connected to the two ends of the cooling channel 232, respectively. When cooling the intake air, the cold end output pipe 34 can be connected separately 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 makes full use of the dual advantages of natural convection and forced convection, which can quickly and evenly remove heat and effectively prevent local overheating.

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

[0131] Reference manual attached Figure 1-2 Instruction manual attached Figure 5 and instruction manual attached Figure 12 The first feeding device 4 includes:

[0132] The base frame 41 is fixed to the lower back of the printer 1. Several sets of tray partitions 411 are integrally connected on the inner side of the base frame 41 at intervals. Several sets of tray placement areas 412 are formed on the inner side of the base frame 41 through the several sets of tray partitions 411.

[0133] Two sets 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 several sets of material tray partitions 411;

[0134] Several sets of first consumable material trays 43 are placed in several sets of material tray placement areas 412 respectively, and the first consumable material trays 43 are connected to the suspension shaft 42;

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

[0136] Several sets of feeding component frames 45 are respectively connected to several sets of first feeding motors 44. A first transmission part 451 is movably provided inside the feeding component frame 45. The first transmission part 451 is fixedly connected to the motor shaft of the first feeding motor 44. An adjustment frame 453 is rotatably connected to the feeding component frame 45. A second transmission part 452 is rotatably connected inside the adjustment frame 453 through a rotating shaft. A pad 456 is fixedly connected to the upper back of the adjustment frame 453.

[0137] The protective back cover 46 is fixed to the upper back of the printer 1, and several sets of first feeding motors 44 and several sets of feeding component frames 45 are all arranged inside the protective back cover 46.

[0138] Several sets of adjusting screws 47 are threadedly connected to the back of the protective rear cover 46 and the gasket 456.

[0139] Specifically, the first feeding device 4 of this utility model adopts a modular combination design. The base frame 41 is fixed to the lower back of the printer 1, and multiple independent tray placement areas 412 are formed by the internally spaced tray partitions 411, realizing the orderly storage of multiple sets of consumables. The two sets of suspension shafts 42 not only support the structural strength of the tray partitions 411, but also provide stable rotational support for the first consumable tray 43. By equidistantly arranging multiple sets of first feeding motors 44 at the upper back of the printer 1, and cooperating with the first transmission part 451 in the feeding component 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 provides protection, but also realizes precise adjustment of the transmission components through cooperation with the adjusting screw 47. The entire design is not only compact and has high space utilization, but also convenient to operate and maintain, significantly improving the stability and reliability of 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 the surfaces of the first transmission part 451 and the second transmission part 452 are provided with annular grooves 454. The inner wall of the annular grooves 454 is integrally connected with several sets of anti-slip teeth 455 in a regular annular array. 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 components, 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 annular array of anti-slip teeth 455 provides the advantage of simultaneous multi-point engagement, greatly improving the smoothness and reliability of the transmission and ensuring the accuracy and durability of the consumables delivery process. In use, when the first transmission part 451 and the second transmission part 452 mesh, the two sets of annular grooves 454 are positioned close together, and the consumables are located within the two sets of annular grooves 454. Thus, stable delivery of the consumables is achieved through the two sets of annular grooves 454 and the anti-slip teeth 455.

[0141] Reference manual attached Figure 14-16 An elliptical hole 4531 is provided through 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 outside 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. Rotating the adjusting frame 453 causes the first transmission part 451 and the second transmission part 452 to mesh and drive.

[0142] Specifically, by opening an elliptical hole 4531 at the upper end of the adjusting frame 453 and inserting an adjusting screw 47 through it, and by ensuring that the width of the elliptical hole 4531 is greater than the diameter of the threaded portion of the adjusting screw 47, the position of the transmission component is adjustable. An adjusting system with elastic compensation is formed by the first spring 471. Because the first spring 471 exerts an elastic force on the adjusting frame 453, the first transmission part 451 and the second transmission part 452 can be stably meshed and connected. Furthermore, since the adjusting frame 453 can be rotated to an appropriate position, the adjusting frame 453 and the second transmission part 452 can adaptively adjust to meet the transmission requirements of consumables of different diameters. Thus, the elastic structure automatically compensates for gap changes caused by temperature variations or long-term use of the consumables, ensuring that the transmission components always maintain the optimal meshing state. At the same time, the first spring 471 provides appropriate preload to ensure transmission stability and also acts as a buffer and shock absorber during operation, effectively extending the service life of the equipment.

[0143] In some embodiments, refer to the appendix to the specification. Figure 1-2The printing module 2 can be fed by the first feeding device 4. The top and bottom of the protective back cover 46 are provided with several sets of through holes for the consumables to pass through. In use, multiple first consumable trays 43 are placed in different tray placement areas 412. Then, the consumables are passed through the inside of the protective back cover 46 and into the wire inlet hole 2921 on the upper housing 292. When the limit switch 293 is triggered, the first transmission part 451 is driven to rotate a certain angle by the first feeding motor 44, thereby realizing a quantitative feeding.

[0144] Reference manual attached Figure 17-21 The second feeding device 5 includes:

[0145] The remote feeding box 51 has a receiving cavity 511 on both sides. Two sets of wire reel shafts 512 are connected in the receiving cavity 511. A second consumable material tray 513 is installed on the wire reel shaft 512.

[0146] Two sets of electrically controlled extrusion boxes 52 are fixed to the inner walls of two sets of receiving cavities 511 respectively. Two sets of second feeding motors 521 are fixedly installed inside the electrically controlled extrusion box 52. Slide grooves 522 are opened in the top and bottom of the electrically controlled extrusion box 52. A slider 523 is slidably connected in the slide groove 522. A square clip 524 is fixedly connected in the inner side 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. A wire threading channel 528 is opened horizontally through the upper and lower ends of the electrically controlled extrusion box 52. The wire threading channel 528 is connected to the slide groove 522.

[0147] Four sets of through-tubes 53 are respectively installed in the remote feeding box 51, and two sets of through-tubes 53 are fixedly installed in each set of electrically controlled extrusion box 52.

[0148] Two sets of lids 54 are connected to both sides of the remote feeding box 51 by hinges.

[0149] Specifically, the remote feed box 51 achieves efficient storage and delivery of consumables by setting receiving cavities 511 on both sides and installing wire spools 512 and second consumable trays 513 within them. The design of the two sets of electrically controlled extrusion boxes 52 adopts a precision mechanical transmission structure, providing power output through two built-in second feed motors 521. The sliding grooves 522 opened at the top and bottom of the electrically controlled extrusion box 52, together with the sliding mechanism of sliders 523 and square clips 524, achieve stable and reliable feeding control. The second spring 525 set between the slider 523 and the inner wall of the sliding groove 522 provides the necessary elastic compensation. The four sets of through-tubes 53 provide a reliable guide channel for consumables, while the two sets of box covers 54 connected by hinges facilitate the replacement of consumables and daily maintenance. This remote feed design not only expands the consumable supply capacity of printer 1, but also improves the applicability of the equipment, especially suitable for long-term printing tasks that require large-capacity, multi-color consumable supply. At the same time, the modular design concept also provides convenient conditions for equipment upgrades and expansions.

[0150] Reference manual attached Figure 22-25 The width of slider 523 is adapted to the width of groove 522, and the width of the inner side of slider 523 is adapted to the width of square card 524. The inner side of slider 523 is rotatably connected to first wire feeding wheel 526 via rotating shaft. The motor shaft of second feeding motor 521 is fixedly connected to second wire feeding wheel 527. Second wire feeding wheel 527 is connected to the inner side of slider 523. Wire feeding channel 528, first wire feeding wheel 526, second wire feeding wheel 527 and wire feeding cylinder 53 are suitable for wire feeding of consumables.

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

[0152] Specifically, the precise design of the mating dimensions between the slider 523 and the groove 522 ensures the motion accuracy of the feeding mechanism. The width of the inner side of the slider 523 matches the width of the square clip 524, allowing the square clip 524 to position the slider 523 and preventing wobbling and jamming during movement. The first wire feeding wheel 526, mounted on the inner side of the slider 523 via a rotating shaft, forms a complete transmission link with the second wire feeding wheel 527 driven by the second feeding motor 521. This dual-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 precisely matches the positions of the first wire feeding wheel 526 and the second wire feeding wheel 527, ensuring that the consumables can pass smoothly and be reliably clamped. The second spring 525 exerts an elastic force on the slider 523, ensuring stable contact between the first feed roller 526 and the second feed roller 527. The second spring 525 also allows for appropriate positional adjustments to the slider 523 and the second feed roller 527, meeting the needs of feeding consumables of different specifications. The entire filament feeding mechanism of the second feeding device 5 is designed not only for stability and reliability but also for maintenance requirements during actual use. The guiding action of the through-tube 53 further ensures the accuracy of consumable feeding. This precise mechanical transmission design significantly improves the reliability of remote feeding and the accuracy of consumable delivery, providing a stable material supply for multi-color printing while also enhancing the overall performance and lifespan of the equipment. Furthermore, the modular design facilitates later maintenance and replacement, greatly improving the practicality of the equipment.

[0153] In some embodiments, refer to the appendix to the specification. Figure 17-18 The printing module 2 can be fed by the second feeding device 5. In use, multiple second consumable spools 513 are placed on different spool shafts 512. Then, the consumable is passed through the wire feeding channel 528 and enters the chute 522. The consumable is conveyed by the first wire feeding wheel 526 and the second wire feeding wheel 527. Then, the consumable passes through the exit cylinder 53 and enters the wire feeding hole 2921 on the upper housing 292. When the limit switch 293 is triggered, the first wire feeding wheel 526 is driven to rotate a certain angle by the second feeding motor 521, thereby realizing a quantitative feeding at one time.

[0154] Specifically, printer 1 is equipped with a corresponding control terminal, which is wired to limit switch 293, first feeding motor 44 and second feeding motor 521. Limit switch 293 can send data to control terminal, thereby controlling first feeding motor 44 and second feeding motor 521 to achieve feeding.

[0155] Specifically, please refer to the attached instruction manual. Figure 1-2 and instruction manual attached Figure 18In use, a Teflon tube can be used to connect the filament inlet 2921 to the top of the protective rear cover 46, or it can be used to connect the filament inlet 2921 to the exit tube 53. Firstly, the Teflon tube has excellent high-temperature resistance and self-lubricating properties. Its extremely low coefficient of friction on its inner wall significantly reduces the resistance of the consumable during transport, ensuring smooth delivery of the printing material. Secondly, the good flexibility of the Teflon tube allows it to form a suitable arc between different installation positions, avoiding sharp turns of the consumable during transport and effectively reducing filament feeding resistance and wear. Simultaneously, the excellent chemical stability and anti-adhesion properties of the Teflon tube effectively prevent the adhesion and clogging of printing material during transport, improving the reliability and ease of maintenance of the equipment. This design also considers the need for rapid material change during multi-color printing. Through the guiding effect of the Teflon tube, rapid insertion and replacement of consumables can be achieved, improving printing efficiency. Furthermore, the use of the Teflon tube reduces wear on the consumable during transport, extends the service life of the printing material, and also reduces the frequency of equipment maintenance. This flexible and efficient connection method provides a better material delivery solution for multi-color printing systems, significantly improving the overall performance of the equipment and the user experience.

[0156] Specifically, during use, when color printing is required, the consumables can be fed in reverse by reversing the shafts of the first feeding motor 44 and the second feeding motor 521. This draws the consumables in the printing module 2 upwards. At this time, the printer 1 can control the printing module 2 to move outside the printing area, clean the original color consumables below the throat 24, and then control the printing module 2 to move back into the printing area. Then, the first feeding motor 44 and the second feeding motor 521 corresponding to the consumables requiring color replacement will feed the new color consumables to the feeding section 22 for printing. Through the innovative cutterless material changing design, which adopts a material changing method of first drawing the filament and then feeding the material, the problems of incomplete material cutting and uneven cuts that may be caused by traditional cutting devices are completely avoided, improving the reliability of material changing and printing quality.

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

Claims

1. A non-cutting knife multi-color printing apparatus, characterized by, The printing device comprises: a printer (1); a printing module (2) arranged on the printer (1), the printing module (2) comprising: a shift axis mounting base (21) connected to an x-axis of the printer (1); a feeding part (22) fixedly connected to the shift axis mounting base (21); a heat dissipation aluminum block (23) fixed to the bottom of the feeding part (22); a throat pipe (24) fixed to the inside of the heat dissipation aluminum block (23); a nozzle (25) fixed to the bottom of the throat pipe (24); a hot end (26) fixed to the outside of the nozzle (25), the hot end (26) being provided with a heating element (261) inside; a first fan (27) fixed to one side of the heat dissipation aluminum block (23); a second fan (28) fixed to the front side of the feeding part (22) and the heat dissipation aluminum block (23), the bottom of the second fan (28) being fixedly connected with a wind guide shell (281); a buffer (29) connected to the top of the feeding part (22); a cooling mechanism (3) arranged on one side of the printer (1), the cooling mechanism (3) being adapted to cool the printing module (2); a first feeding device (4) arranged on the back of the printer (1), the first feeding device (4) being adapted to feed the printing module (2); a second feeding device (5) arranged on the outside of the printer (1), the second feeding device (5) being adapted to feed the printing module (2).

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

3. The knifeless multi-color printing apparatus according to claim 1, wherein The buffer (29) comprises: a yarn feeding block (291) fixed to the top of the feeding part (22), the inside of the yarn feeding block (291) being hollowly arranged; an upper shell (292) sleeved to the outside of the upper end of the yarn feeding block (291), the length and width of the inside of the upper shell (292) being adapted to the length and width of the yarn feeding block (291), respectively, a plurality of yarn feeding holes (2921) being provided through the top of the upper shell (292); a limit switch (293) fixed to the lower end surface of the yarn feeding block (291); wherein the upper shell (292) triggers the limit switch (293) by moving downward.

4. The knifeless multi-color printing apparatus according to claim 1, characterized by, The cooling mechanism (3) comprises: a cold supply end (31) arranged on one side of the printer (1); a cold air system (32) arranged in the cold supply end (31); a water tank (33) arranged in the cold supply end (31), the water tank (33) being provided with a circulating water pump (331) installed therein; a cold end output pipe (34) and a cold end input pipe (35) both connected with the cold supply end (31).

5. The knifeless multi-color printing device according to claim 4, wherein The surface of the heat dissipation aluminum block (23) is integrally connected with a plurality of groups of heat dissipation fins (231), the inner side of the heat dissipation aluminum block (23) is provided with a cooling flow channel (232), the cooling flow channel (232) has a horizontal "U" shape structure, the cooling flow channel (232) passes through the outer side of the throat pipe (24), and the two ends of the cooling flow channel (232) are respectively connected with the cold end output pipe (34) and the cold end input pipe (35).

6. The knifeless multi-color printing device according to claim 1, wherein The first feeding device (4) comprises: A chassis (41) is fixed to the back lower end of the printer (1), a plurality of groups of tray partitions (411) are integrally connected to the inner side of the chassis (41), a plurality of groups of tray placing areas (412) are formed in the inner side of the chassis (41) through the plurality of groups of tray partitions (411); Two groups of suspension shafts (42) are fixedly connected to the inner side of the chassis (41), and the suspension shafts (42) are fixedly inserted into the plurality of groups of tray partitions (411); A plurality of groups of first consumable material trays (43) are respectively placed in the plurality of groups of tray placing areas (412), and the first consumable material trays (43) are connected to the suspension shafts (42); A plurality of groups of first feeding motors (44) are equidistantly arranged at the upper end of the back of the printer (1); A plurality of groups of feeding assembly racks (45) are respectively connected to the plurality of groups of first feeding motors (44), a first transmission part (451) is movably arranged in the inner side of the feeding assembly 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 upper end of the back of the adjusting rack (453), a second transmission part (452) is rotatably connected to the inner side of the adjusting rack (453) through a rotating shaft, and a gasket (456) is fixedly connected to the upper end of the back of the adjusting rack (453); A protective rear cover (46) is fixed to the upper end of the back of the printer (1), and the plurality of groups of first feeding motors (44) and the plurality of groups of feeding assembly racks (45) are arranged on the inner side of the protective rear cover (46); A plurality of groups of adjusting screws (47) are threadedly connected to the inner side of the back of the protective rear cover (46) and the gasket (456).

7. The knifeless multi-color printing device according to claim 6, wherein The first transmission part (451) and the second transmission part (452) are connected through meshing transmission, and annular grooves (454) are formed in the surfaces of the first transmission part (451) and the second transmission part (452), and a plurality of groups of anti-skid teeth (455) are integrally arranged on the inner wall of the annular grooves (454) in a regular annular array.

8. The cutterless multi-color printing device according to claim 7, wherein An elliptical hole (4531) is formed in the upper end of the adjusting rack (453), the adjusting screw (47) is arranged in the elliptical hole (4531), a first spring (471) is arranged 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 rack (453) is rotated to enable the first transmission part (451) and the second transmission part (452) to be connected through meshing transmission.

9. The knifeless multi-color printing device according to claim 1, wherein The second feeding device (5) comprises: The utility model provides a remote feeding box (51), which is internally provided with containing cavities (511) on both sides, two groups of wire disc shafts (512) are connected in the containing cavities (511), and second material consumption discs (513) are installed on the wire disc shafts (512); Two groups of electric control extrusion boxes (52) are fixed on the inner walls of the two containing cavities (511), respectively, two groups of second feeding motors (521) are fixedly arranged on the inner sides of the electric control extrusion boxes (52), sliding grooves (522) are formed in the top and bottom of the electric control extrusion boxes (52), sliding blocks (523) are slidably connected in the sliding grooves (522), square clamps (524) are fixedly connected to the inner sides of the sliding grooves (522), second springs (525) are fixedly connected between the sliding blocks (523) and the inner walls of the sliding grooves (522), wire passing channels (528) are formed in the upper end and the lower end of the electric control extrusion boxes (52), and the wire passing channels (528) are connected to the sliding grooves (522). Four groups of wire passing barrels (53) are respectively arranged in the remote feeding box (51), and two groups of wire passing barrels (53) are fixedly arranged in each electric control extrusion box (52); Two groups of box covers (54) are respectively hingedly connected to the two sides of the remote feeding box (51).

10. The cutterless multi-color printing device according to claim 9, wherein The width of the sliding block (523) is matched with the width of the sliding groove (522), the width of the inner side of the sliding block (523) is matched with the width of the square clamp (524), a first wire feeding wheel (526) is rotatably connected to the inner side of the sliding block (523) through a rotating shaft, a second wire feeding wheel (527) is fixedly connected to the motor shaft of the second feeding motor (521), the second wire feeding wheel (527) is connected to the inner side of the sliding block (523), and the wire passing channel (528), the first wire feeding wheel (526), the second wire feeding wheel (527) and the wire passing barrel (53) are suitable for material wire feeding.

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