A consumable transfer adapter, consumable transfer assembly, and three-dimensional printing apparatus

Abstract

The present specification provides a consumable transmission joint, a consumable transmission assembly and a three-dimensional printing device, which relates to the technical field of three-dimensional printing. The consumable transmission joint can be applied to the device body or the consumable storage device of the three-dimensional printing device. The consumable transmission joint comprises a joint body and a joint shell. The joint body has m feeding ends, each feeding end has n feeding plug interfaces, the joint body is also provided with m*n transmission channel branches for inputting consumables, each feeding plug interface corresponds to each transmission channel branch, the joint body is also provided with n transmission channel trunks for receiving consumables from the transmission channel branches, and m transmission channel branches converge into one transmission channel trunk. The joint shell has a discharging end, the discharging end has n discharging plug interfaces, each discharging plug interface corresponds to each transmission channel trunk, and the adaptation to different three-dimensional printing devices and consumable cartridges and other aspects is improved, and the adaptability to multi-color / multi-type consumable printing scenes is improved.

Description

Technical Field

[0001] This specification relates to the field of 3D printing technology, and in particular to a consumable transfer connector, a consumable transfer component, and a 3D printing device. Background Technology

[0002] 3D printing equipment (also known as 3D printers) is a device that constructs three-dimensional entities by layering printing materials (such as plastics, metals, resins, etc.). As users' demands for printing quality continue to upgrade, multi-color printing and multi-type consumable composite printing have become important development directions, which requires equipment to have the ability to process multiple consumables simultaneously and flexibly switch outputs.

[0003] In related technologies, the mainstream solution for 3D printing equipment to meet the printing needs of multiple colors / types of consumables is to adopt a multi-channel switching module. This module integrates multiple independent feeding channels, each corresponding to a type of consumable (such as plastic filament of a specific color or resin with special properties). Through software control of the drive mechanism of each channel, operations such as retraction and pushing of different consumables are realized, ultimately ensuring that the target consumable is accurately delivered to the printhead assembly for output. However, since the number of channels in the multi-channel switching module is determined by the fixed structure of the switching component, the number of channels is fixed at the factory (e.g., 4 channels, 8 channels). Therefore, when users need to expand the printing colors or consumable types (e.g., upgrading from 8 colors to 16 colors), the physical structure of the original module cannot accommodate more channels. The entire switching module or even the entire feeding system must be replaced. This not only leads to high upgrade costs but also requires readjusting equipment parameters to adapt to the new module, significantly increasing operational complexity and severely limiting users' personalized choices. Meanwhile, for equipment manufacturers, designing separate switching modules for different channel specifications leads to poor component interchangeability and low production efficiency, further increasing equipment costs and ultimately affecting the popularization and innovation of technology throughout the industry. Utility Model Content

[0004] To overcome the problems existing in related technologies, this specification provides a consumable transmission connector, a consumable transmission component, and a 3D printing device. It aims to solve the technical defects of fixed channel number in multi-channel switching modules, which cannot be flexibly adjusted according to user needs. Through modular design, it realizes convenient expansion and combination of consumable transmission channels, improves the adaptability of the device to multi-color / multi-type consumable printing scenarios, reduces user upgrade and maintenance costs, and improves the versatility and reusability of parts.

[0005] According to a first aspect of the embodiments of this specification, a consumable transfer connector is provided, which is applied to the device body of a 3D printing equipment or a consumable storage device. The consumable transfer connector includes a connector body and a connector housing, and the connector housing is sleeved on the connector body. The connector body has m feed ends, and each feed end has n feed ports; The connector body is also provided with m×n transmission channel branches for inputting consumables and n transmission channel trunks. Each of the feeding ports corresponds to each of the transmission channel branches. Each of the transmission channel trunks is connected to one of the transmission channel branches corresponding to each of the feeding ports, so that the m transmission channel branches converge into one transmission channel trunk. The connector housing has a discharge end, which has n discharge ports, each of which corresponds to a transmission channel trunk. Where m and n are positive integers greater than 1.

[0006] In this type of embodiment, the m feed ends of the connector body, along with m×n transmission channel branches and n transmission channel trunks, combined with the discharge end of the connector shell, form a modular multi-channel confluence structure. In this structure, m and n are adjustable positive integer parameters, allowing for flexible combinations of the number of feed ends and the number of single-end transmission channel branches. Each feed end and transmission channel branch is structurally independent, while the transmission channel branches in each feed end can form a confluence connection through the transmission channel trunks. This ensures that the total number of transmission channel branches (m×n) can be expanded as needed to adapt to the requirements of different 3D printing equipment and consumable boxes, improving adaptability to multi-color / multi-type consumable printing scenarios.

[0007] Taking a single consumable transfer connector as an example, n feed ports can be connected to different consumable storage sections (such as consumable cartridges of different colors), while n output ports can be connected to the same printhead assembly or different printhead assemblies. By independently controlling the on / off of the n channels of the feed tube at each feed end, multiple feed ends can simultaneously feed different consumables to the main circuit, achieving multi-material composite printing on a single printhead. Furthermore, when a consumable needs to be replaced at a certain feed end, only the transmission of the corresponding transfer channel branch needs to be paused, while the feeding of other transfer channel branches remains unaffected, ensuring the continuity of the printing process. Moreover, when it is necessary to switch consumable types or colors, spare materials can be supplied in advance through the corresponding transfer channel branches of other feed ends. After the original transfer channel branch completes its retraction, the transfer channel branch supplying the spare material can quickly resume feeding, significantly shortening the material change interval and improving the material change efficiency of the printhead.

[0008] Secondly, the number of n infeed connectors at the feed end and the n output connectors at the output end are consistent, forming a standardized transmission link with universal interfaces and tubes, in conjunction with a uniformly structured n-channel feed tube. This ensures interchangeability between each consumable transmission connector, significantly improving component reusability. In applications where multiple consumable transmission connectors are cascaded, the unified infeed and output end design allows any connector to be flexibly connected to any position in the cascaded link. For example, in an 8-color printing system, a connector with 4 infeed connectors (n=4) can be used as a branch connector to connect to the 4-color cartridges, or as an intermediate adapter connector to connect the upstream branch and the downstream main connector, eliminating the need for separate connectors for different positions. When the number of channels needs to be adjusted, only the number of consumable transmission connectors needs to be increased accordingly; the original n-channel feed tube can still be used, avoiding the need to replace the entire set of components due to interface incompatibility, significantly reducing the cost of channel adjustment, and solving the problem of the universality of consumable transmission connectors.

[0009] In addition, the design of the feed end and the discharge end can make the consumable transmission component more efficient to maintain. During the replacement and addition of consumable transmission connectors, operators do not need to distinguish the structure of the consumable transmission connectors, and do not need to purchase special parts. This greatly shortens the maintenance cycle and reduces inventory costs and downtime losses caused by the special nature of the parts.

[0010] In some example embodiments of this disclosure, the feed end and the discharge end have the same structure.

[0011] In this type of embodiment, the identical structure of the feed end and the output end, combined with a matching n-channel feed tube, forms a multi-channel transmission system that is universal for both the feed end and the output end. In this design, the connection methods between the feed end and the n-channel feed tube, as well as between the output end and the n-channel feed tube, are completely identical, ensuring no fundamental difference in their physical structure. Only the "feed" or "output" function needs to be defined according to the usage scenario, ensuring that each consumable transmission connector has bidirectional adaptability and improving compatibility with different 3D printing equipment interfaces. Furthermore, because the feed end and the output end have the same structure, each consumable transmission connector can be flexibly assigned functions according to actual needs. In the cascaded state of multiple consumable transmission connectors, there is no need to deliberately distinguish the specific purpose of each consumable transmission connector in the device. The output end of each consumable transmission connector can directly connect to the feed end of the next consumable transmission connector through the n-channel feed tube to form a stable channel expansion link. The cascading process does not require distinguishing between "upstream connectors" and "downstream connectors." Any connector can be connected to any position on the link at any time. Furthermore, if a consumable transmission connector is damaged, it can simply be replaced with a connector of the same specification. The original cascading relationship and channel layout remain unaffected, avoiding cascading interruptions caused by interface incompatibility and significantly reducing the complexity and cost of system expansion.

[0012] Furthermore, the identical structure of the infeed and discharge ends simplifies production, inventory, and maintenance processes. On the production side, the same set of molds can be used to manufacture port components, eliminating the need for separate molds for the infeed and discharge ends, thus reducing manufacturing costs. In inventory management, only one type of connector and n-channel tubing need to be stocked, eliminating the need to differentiate between uses and reducing inventory pressure. During maintenance, operators do not need to determine the port type; they can directly insert or remove tubing or replace connectors as needed, significantly shortening maintenance time and reducing the risk of equipment downtime due to operational errors.

[0013] In some example embodiments of this disclosure, on one of the feed ends, any two adjacent feed ports are interconnected, and a first anti-fooling part is also provided between the two adjacent feed ports. On one of the discharge ends, any two adjacent discharge ports are interconnected, and a second anti-fooling part is also provided between the two adjacent discharge ports.

[0014] In this type of embodiment, both the feed end and the discharge end form a connected interface and a foolproof positioning structure. The connection between adjacent insertion interfaces (feed insertion interface and discharge insertion interface) ensures the continuity of the insertion and removal space of the entire n-channel tube in the feed end and the discharge end, avoiding tube installation interference caused by independent interface separation. The first foolproof part and the second foolproof part achieve accurate constraint on the connection direction and position of the n-channel tube through differentiated designs such as physical protrusions or grooves, ensuring smooth installation of the n-channel tube and the uniqueness of the installation direction and position, together forming a reliable multi-channel connection structure.

[0015] The connectivity between adjacent feed inlet and outlet inlets allows a single feed or outlet end to accommodate n-channel tubing of different specifications (as long as the number of channels is n). This eliminates the need for separate interface spacing design for specific tubing, improving interface compatibility with different n-channel tubing and solving the challenge of universality in tubing-interface bonding. In scenarios where multiple consumable transfer connectors are cascaded, the foolproof structure of the feed and outlet ends remains consistent, ensuring precise alignment of each connection node in the cascaded link. The outlet end of the upstream consumable transfer connector and the feed end of the downstream consumable transfer connector can be interlocked using n-channel tubing of the same specification, ensuring accurate connection between the corresponding outlet and feed inlet inlets. This avoids channel misalignment caused by multi-level connections and provides a structural basis for flexible expansion of the number of channels.

[0016] In addition, the design of the first and second error-proof parts simplifies the operation process of the consumable transfer connector, enabling operators to quickly insert and remove the n-channel material tube or replace the consumable transfer connector; while the interconnected inlet and outlet interfaces further improve the insertion efficiency of the n-channel material tube, eliminating the need for an independent material tube for each inlet and outlet interface, thus further enhancing the practicality and economy of the structure.

[0017] In some example embodiments of this disclosure, the feed end includes: A first channel enclosure is disposed on the connector body and defines n feeding ports. A first notch is also provided on the first side of the first channel enclosure. A first anti-mistake component is disposed at the first notch. The first anti-mistake component includes a first anti-mistake part, which protrudes from the first anti-mistake component toward the space defined by the first channel enclosure. The protrusion direction of the first anti-mistake part intersects with the insertion and removal direction. The first anti-mistake component separates n feeding ports. The first anti-mistake component and the second side of the first channel enclosure form a first clearance portion that connects two adjacent feeding ports. The first side and the second side of the first passage enclosure are located on opposite sides of the first passage enclosure.

[0018] In this type of embodiment, the first channel enclosure defines the basic outline of n feed ports by enclosing the space. The first notch on its first side provides an installation position for the first anti-misalignment component. The first anti-misalignment component is located at the first notch and protrudes into the enclosing space in a direction intersecting the insertion and removal direction. This not only separates the independent feed ports but also forms a first clearance portion with the second side of the first channel enclosure, keeping adjacent feed ports connected. Furthermore, the first side and the second side of the first channel enclosure are on opposite sides, ensuring that the protrusion direction of the first anti-misalignment component and the spatial position of the first clearance portion do not interfere with each other.

[0019] Specifically, the enclosure of the first channel plate provides overall insertion and removal guidance for the n-channel tube, preventing radial displacement during insertion. The protrusion of the first anti-misplacement component forms a physical limit, precisely matching the corresponding anti-misplacement part (such as the second anti-misplacement groove) on the n-channel tube, allowing the n-channel tube to be inserted only in the correct direction, thus achieving the misplacement prevention function. The first clearance part reserves space for the insertion of the n-channel tube, ensuring that adjacent feed interfaces do not affect the tight fit of the n-channel tube when connected, achieving accurate connection between each consumable tube in the n-channel tube and the feed interface. This allows the feed end to accommodate the integrated design of the n-channel tube while ensuring the accuracy and stability of the connection through structural constraints.

[0020] In addition, the protrusion size of the first anti-foolproof component and the spacing of the first avoidance part can be standardized to fit each n-channel material tube, solving the compatibility problem of binding the material tube and the interface. The standardized design also reduces the difficulty of manufacturing and maintenance, and the accuracy is easy to control.

[0021] In some example embodiments of this disclosure, a locking component is detachably provided in the first clearance portion for locking the n-channel material tube connected to the feed end.

[0022] In this type of embodiment, the locking component within the first recess and the n-channel tube form an adjustable fixing structure. The locking component is installed in the first recess via a detachable method (such as screws or wedges). This recess is the space between the first anti-misalignment component and the second side of the first channel enclosure, providing both accommodating space for the tube wall structure of the n-channel tube and reserving installation and operation space for the locking component. When the n-channel tube is inserted into the feed end, the locking component can apply pressure from the outside towards the n-channel tube, causing the n-channel tube to fit tightly against the first channel enclosure and the first anti-misalignment component, achieving a dual cooperation of insertion positioning and locking fixation.

[0023] The detachable locking mechanism also enhances the adaptability of n-channel tubing connections. Different types of n-channel tubing, or those with certain dimensional variations, can be tightly secured by adjusting the tightness of the locking mechanism, eliminating the need for a dedicated fixing structure for specific n-channel tubing. For example, for tubing with thinner walls, the locking force can be reduced to avoid pressure damage; for tubing with thicker walls, the locking force can be increased to ensure a seal. This overcomes the limitation of traditional fixing clips that only fit a single type of tubing, enhancing the compatibility of the feed end with multiple types of consumables.

[0024] Secondly, the detachable locking mechanism simplifies the replacement and maintenance process of the n-channel feed tube. When it is necessary to replace the consumable transfer connector or the n-channel feed tube, the n-channel feed tube can be pulled out simply by disassembling the locking mechanism, without damaging the consumable transfer connector or the n-channel feed tube itself. Compared with traditional integrated fixing structures (such as adhesive bonding or non-removable clips), this design shortens the replacement time of the n-channel feed tube and prevents damage to the feed end due to frequent replacements, thereby reducing maintenance costs and downtime.

[0025] Furthermore, during the operation of the 3D printing equipment, the n-channel feed tube may loosen due to equipment vibration or filament delivery pressure. The locking component ensures a tight seal between the n-channel feed tube and the feed end through continuous pressure, preventing filament leakage or air ingress due to gaps (especially crucial for easily oxidized filaments such as resin). Simultaneously, the locked n-channel feed tube's fixed position, further working in conjunction with the positioning function of the first anti-misalignment component, eliminates channel misalignment caused by loosening, ensuring the accuracy of multi-color / multi-type filament delivery.

[0026] In some example embodiments of this disclosure, a mounting hole communicating with the first clearance portion is provided on the second side of the first channel enclosure. The locking component is a screw, which is detachably installed on the first channel enclosure through the mounting hole and can extend into the first clearance portion through the mounting hole.

[0027] In this type of embodiment, the mounting hole connects to the first recess, providing an axial mounting path for the screw. The screw is detachably fixed to the first channel enclosure via a threaded connection and can extend axially into the first recess along the mounting hole. When the n-channel tube is inserted into the feed end, the end of the screw can contact the outer wall of the tube. The tightening force can be adjusted to adjust the pressure on the tube, thus adapting to n-channel tubes of different wall thicknesses and materials (such as thin-walled plastic hoses and thick-walled metal tubes). For easily deformable hoses, the screw can be loosened to reduce pressure and prevent tube wall damage; for rigid tubes, the screw can be tightened to ensure a tight fit. This solves the limitation of traditional fixed structures that can only adapt to a single specification of tube, enabling the feed end to be compatible with more types of consumable transmission needs and enhancing the applicability of the equipment to multiple scenarios.

[0028] Secondly, the removability of the screws simplifies the maintenance and replacement process. When it is necessary to replace the feed tube or clean the feed end, simply unscrew the screws to pull out the n-channel feed tube without disassembling the entire feed end, which significantly reduces equipment downtime.

[0029] Furthermore, the screw's self-locking characteristic (thread friction) continuously maintains pressure on the n-channel feed tube, preventing seal failure due to vibration (such as consumable leakage or air ingress). Simultaneously, the screw's clamping force is evenly distributed across the n-channel feed tube contact points. Combined with the positioning of the first anti-misalignment mechanism, this ensures the feed tube will not shift axially during long-term use, eliminating the risk of cross-contamination between channels, making it particularly suitable for high-precision multi-color printing scenarios.

[0030] In some example embodiments of this disclosure, a slot communicating with the first clearance portion is provided on the second side of the first channel enclosure. The locking component is a wedge block, which is detachably installed on the first channel enclosure through the slot and protrudes into the first clearance portion through the groove of the slot.

[0031] In this type of embodiment, the slot connects to the first clearance part, and its slot shape is adapted to the shape of the wedge, providing installation guidance and limiting for the wedge. The wedge is detachably snapped onto the first channel enclosure through the slot. After installation, part of its structure protrudes into the first clearance part through the slot opening, forming a squeezing force on the n-channel material tube inserted into the feed end, thereby achieving mechanical locking of the n-channel material tube.

[0032] The wedge can be installed and removed without tools, simply by inserting and pulling. When it is necessary to fix the n-channel tube, push the wedge into the slot, and the protruding part will naturally press against the outer wall of the n-channel tube. When it is necessary to replace the tube, simply pull out the wedge to loosen it, which greatly shortens the operation time of tube replacement and improves the convenience of fixing the n-channel tube.

[0033] Secondly, the detachable wedge design enhances adaptability to different tubing types. By replacing wedges of varying thicknesses or hardness, the locking force on the n-channel tubing can be adjusted to accommodate tubing of different wall thicknesses or materials. For thin-walled flexible tubing, thinner wedges can be used to reduce pressure and prevent breakage; for thick-walled rigid tubing, thicker wedges can be used to ensure a tight fit. This allows the same feed end to be compatible with various consumables without modification, improving component versatility.

[0034] In addition, the wedge's protruding locking mechanism ensures connection stability. The wedge and slot work together to create continuous compressive force on the n-channel tube. Combined with the elastic deformation of the n-channel tube itself, this effectively counteracts the vibrations generated during the operation of the 3D printing equipment, preventing material leakage or air ingress due to gaps, and further ensuring the continuity and accuracy of material output.

[0035] In some example embodiments of this disclosure, the surface of the connector body is provided with m×n first feed grooves extending along the insertion and extraction direction, and n first discharge grooves; The shell wall of the connector housing covers the first feed trough and the first discharge trough, and together with the first feed trough and the first discharge trough, respectively encloses the branch of the transmission channel and the main of the transmission channel.

[0036] In this type of embodiment, the shell wall of the connector housing acts as a cover plate, tightly sealing the openings of the first feed trough and the first discharge trough, forming a closed transmission channel through the enclosure with the trough body. The first feed trough enclosed by the shell wall forms a branch of the transmission channel, and the first discharge trough enclosed by the shell wall forms the main transmission channel. The trough body of the connector main body is the supporting foundation of the channel, determining the number, direction, and position of the channels; the shell wall of the connector housing, as a sealing component, seals the channel through the covering, ensuring stable transmission of consumables within the trough. Together, they constitute a complete consumable transmission path.

[0037] Traditional one-piece molded multi-channel structures are difficult to manufacture, requiring guarantees of channel parallelism, sealing, and precise alignment. This necessitates sophisticated processing equipment and results in a high scrap rate. In this embodiment, the first feed channel and first discharge channel can be machined on the surface of the connector body using simple processes such as milling, stamping, injection molding, and 3D printing, eliminating the need for complex deep-hole machining. The connector shell only requires a flat mating surface, making the structure simple and easy to form (e.g., injection molding or bending of metal sheets). Furthermore, when channel expansion is required, the new channels can be machined based on the existing connector body, eliminating the need for creating entirely new molds. This significantly reduces production and expansion costs, making it particularly suitable for small-batch, multi-specification customized needs. Enclosed channels are extremely difficult to clean if blocked (e.g., by consumable residue or foreign objects), often requiring the entire connector to be scrapped. In this embodiment, the transmission channel branches and main transmission channel are respectively enclosed by the first feed chute, the first discharge chute, and the connector housing. During maintenance, only the connector housing needs to be disassembled (separating the shell wall from the connector body) to directly expose the interior of the first feed chute and the first discharge chute, facilitating the cleaning of blockages or repair of the chute with tools. If a chute is damaged (e.g., by wear or deformation), only the connector body needs to be replaced; the connector housing can continue to be used without replacing the entire set. This detachable and easy-to-clean feature significantly shortens maintenance time and reduces equipment downtime losses due to channel failures. In some exemplary embodiments of this disclosure, the connector housing has a receiving cavity extending in the insertion and extraction direction, and the two ends of the connector housing are also provided with a first limiting baffle and a second limiting baffle. The first limiting baffle has an insertion and extraction port communicating with the receiving cavity. The connector body is at least partially disposed in the receiving cavity through the insertion and extraction port, and the discharge end is disposed on the second limiting baffle. The connector body has an installation plate on one side with the feed end, and the installation plate abuts against the first limiting baffle and is detachably connected to the first limiting baffle.

[0038] In this type of embodiment, the receiving cavity provides an insertion space for the connector body. A first limiting baffle and a second limiting baffle are located at opposite ends of the connector housing. The insertion / extraction port of the first limiting baffle connects to the receiving cavity, serving as an insertion channel for the connector body. The second limiting baffle supports the discharge end, forming a closed-loop structure. The connector body is placed within the receiving cavity through the insertion / extraction port. The mounting plate on its inlet side abuts against and is detachably connected to the first limiting baffle (e.g., by screw fixing or snap-fit ​​engagement), achieving a stable and secure connection between the connector housing and the connector body.

[0039] This detachable assembly structure enhances the flexibility of channel expansion. When the number of channels needs to be increased, simply disassemble the connection between the mounting plate and the first limiting baffle, remove the original connector body, replace it with a connector body adapted to a larger m or n value, and then reassemble. The connector housing can continue to be used. This feature of replaceable connector bodies and universal connector housings avoids the problem of needing to replace the entire integrated module, significantly reducing upgrade costs and enabling 3D printing equipment to quickly adapt to the printing needs of more types / colors of consumables.

[0040] Furthermore, the precise positioning structure ensures the reliability of the consumable transfer connector. The matching shape of the receiving cavity and the connector body, along with the abutment and limiting action of the first limiting baffle, ensures that the feed and output interfaces align perfectly after assembly, preventing consumable leakage or channel blockage due to misalignment. Simultaneously, the detachable connection (e.g., screw fastening) between the mounting plate and the first limiting baffle resists vibrations during 3D printing operation, preventing relative displacement between the connector housing and the connector body, further ensuring the stability of multi-color / multi-type consumable transfer, making it particularly suitable for high-precision printing scenarios.

[0041] In some exemplary embodiments of this disclosure, the cross-sectional shape of the receiving cavity is rectangular, and the portion of the connector body used for assembly within the receiving cavity matches the structure of the receiving cavity; and / or The cavity wall of the receiving cavity and the surface of the connector body are provided with a foolproof structure.

[0042] In this type of embodiment, the rectangular cross-section allows the receiving cavity and the insertion part of the connector body to form a surface contact fit, restricting the relative rotation of the two in the circumferential direction; the foolproof structure (such as the corresponding design of the cavity wall protrusion and the groove of the connector body) restricts the incorrect insertion direction of the connector body through physical interference, ensuring the accurate docking of the connector body and the connector shell after assembly, and structurally avoiding printing failures caused by assembly errors.

[0043] The dual positioning structure simplifies the assembly and maintenance of the connector body and connector shell. The asymmetry of the rectangular cross-section (such as the long and short sides) provides intuitive directional guidance, while the foolproof structure, through the physical constraint of "correct insertion if it can be inserted," allows assembly without professional skills and even enables "blind insertion." During maintenance, disassembly and reassembly can be quickly reset, avoiding secondary failures caused by inaccurate positioning, significantly shortening the maintenance cycle and reducing equipment downtime losses.

[0044] In addition, the rectangular cross-section surface contact design enhances structural stability. The rectangular surface contact can disperse the vibration stress during the operation of the 3D printing equipment. Combined with the interlocking effect of the foolproof structure, it effectively resists the relative displacement caused by vibration and ensures the stability of the channel docking during long-term use. It is especially suitable for the stringent requirements of transmission reliability in high-precision multi-color printing.

[0045] In some example embodiments of this disclosure, the foolproof structure includes: A first anti-mistake groove is formed in the cavity wall of the receiving cavity, and the extension direction of the first anti-mistake groove is consistent with the extension direction of the cavity wall of the corresponding receiving cavity. A foolproof protrusion is provided on the connector body, and the foolproof protrusion is slidably placed in the first foolproof groove.

[0046] In this type of embodiment, the first anti-mistake groove and the anti-mistake protrusion of the anti-mistake structure form a precise guiding and positioning fit. The first anti-mistake groove is formed in the cavity wall of the receiving cavity, and its extension direction is consistent with the extension direction of the cavity wall, providing a sliding path for the anti-mistake protrusion; the anti-mistake protrusion is set on the surface of the connector body, and its shape and size are adapted to the first anti-mistake groove, allowing it to slide along the length of the groove and embed itself in the groove. The spatial constraint of the first anti-mistake groove restricts the movement direction of the anti-mistake protrusion, while the anti-mistake protrusion, through its engagement with the first anti-mistake groove, ensures that the connector body can only be inserted into the receiving cavity in the only correct direction. If the connector body is inserted in the wrong direction, the anti-mistake protrusion will form a hard interference with the cavity wall of the receiving cavity and will not be able to enter the first anti-mistake groove, thus avoiding channel docking deviation at the source, ensuring precise correspondence between the inlet and outlet connectors, and guaranteeing the accuracy of multi-color / multi-type consumable transmission.

[0047] Secondly, the first anti-mistake groove extends along the insertion and removal direction. After the anti-mistake protrusion is embedded, it can slide along the groove to guide the connector body into the receiving cavity. It can be smoothly assembled without repeated position adjustments, which shortens the assembly time and is suitable for high-frequency maintenance scenarios (such as the transmission of easily clogged resin consumables).

[0048] In some example embodiments of this disclosure, the connector body gradually narrows from the feed end to the discharge end.

[0049] In this type of embodiment, the gradually narrowing structure improves the space utilization of the consumable transfer connector, adapting to compact equipment designs. 3D printing equipment has stringent requirements for internal space; the narrowing design at the output end significantly reduces the space occupied by the consumable transfer connector in the output direction. When multiple consumable transfer connectors are cascaded (e.g., the output end of one connector connects to the infeed end of the next), the overall lateral dimensions of the structure can be significantly reduced. This allows complex configurations such as multi-color printing systems to maintain a compact layout, solving the problems of large space occupation and difficulty in high-density integration of traditional modules.

[0050] Secondly, the narrowing shape enhances the structural strength and assembly stability of the connector body. Compared with a structure with a constant cross-section, the gradually narrowing structure has a more uniform stress distribution. When subjected to the insertion and extraction force of the n-channel tube or the vibration of the 3D printing equipment, it is less likely to generate stress concentration in local areas, reducing the risk of cracking. At the same time, the narrowing part can form a tapered fit with the receiving cavity of the connector shell, making the assembly of the connector body and the connector shell more stable, reducing the relative displacement caused by vibration, and further ensuring the accuracy of channel docking.

[0051] In addition, the gradually narrowing structure provides natural guidance when the connector body is inserted into the housing (the gradient from wide to narrow guides alignment), making assembly more convenient.

[0052] In some example embodiments of this disclosure, m feed ends are arranged sequentially along a first direction on the connector body, and the feed inlets of each feed end are arranged at intervals along a second direction. The discharge ports at the discharge end are arranged sequentially at intervals along the second direction; The first direction and the second direction are perpendicular to each other.

[0053] In this type of embodiment, the first direction (such as longitudinal direction) is the overall arrangement direction of the feed ends, which determines the spatial distribution sequence of the m feed ends; the second direction (such as transverse direction) is the arrangement direction of the feed inlet and the discharge inlet, which not only unifies the spacing rules of the n feed inlets in each feed end, but also ensures that the n discharge inlets of the discharge end are aligned with it, thus avoiding the feed ends from being stacked and crowded, while also ensuring the universality of the n-channel material tube on the feed end and the discharge end.

[0054] m feed ends are arranged sequentially along the first direction, and n connectors of each feed end are spaced apart along the perpendicular second direction, so that the internal transmission channel branches can be designed along the paths of longitudinal and transverse division areas, avoiding the intersection of transmission channel branches and ensuring smooth transmission of consumables.

[0055] Furthermore, the unified layout of the feed and discharge interfaces improves the adaptability and ease of operation of the 3D printing equipment. The discharge interface at the discharge end is arranged along the same second direction as the feed interfaces at each feed end, allowing direct connection to the same-direction interfaces of upstream and downstream equipment. The unified connection structure of the n-channel material tubes used to connect upstream and downstream equipment facilitates operators to improve the connection efficiency of consumable transmission connectors. The positioning of the n-channel material tubes and consumable transmission connectors is intuitive, and there is no need to rely on complex markings when installing or removing the n-channel material tubes or troubleshooting. This solves the problems of chaotic interfaces and reliance on professional skills in traditional layouts.

[0056] According to a second aspect of the embodiments of this specification, a consumable transmission component is provided, comprising: One or more first connectors; One or more second connectors; A third connector; Wherein, the discharge end of the first connector is adapted to be connected to a feed end of the third connector, and the discharge end of the second connector is adapted to be connected to another feed end of the third connector; The first connector, the second connector, and the third connector are each independently a consumable transmission connector as described in the first aspect.

[0057] In this type of embodiment, the consumable transmission assembly forms a multi-level transmission structure through a specific connection method between the first connector, the second connector, and the third connector. The first and second connectors act as branch nodes, each receiving different types / colors of consumables through its m feed ends. After converging through the internal transmission trunk line, these consumables are output from the discharge end via an n-channel feed tube. The third connector acts as a consolidation node, with its different feed ends connected to the discharge ends of the first and second connectors, further integrating the consumables from the two branch transmissions, and then conveying them downstream (such as to the printhead assembly) through its own discharge end.

[0058] The multi-stage transmission structure enables flexible expansion of the number of channels. The number of channels in a single consumable transmission connector is limited to m×n, but by cascading multiple consumable transmission connectors, the limitation of a single consumable transmission connector can be quickly overcome. For example, the first and second connectors each have 8 channels (m=2, n=4), and their outlet ends are connected to the two inlet ends of the third connector, respectively. The third connector can then form a total transmission capacity of 16 channels. If it is necessary to further expand to 32 channels, only the fourth and fifth connectors need to be added and connected to the other inlet ends of the third connector (or a higher-order total connector needs to be added). There is no need to redesign the entire transmission system, which solves the problem of fixed channels and customized modifications required for expansion in traditional devices.

[0059] Secondly, the first and second connectors are independent branches, and the consumable transmission paths do not interfere with each other. When a connector needs to replace consumables or malfunctions, its operation can be paused individually, while the other connectors can still supply materials normally through the corresponding feed end of the third connector, ensuring that the downstream printing process is not interrupted. Similarly, if a feed end of the third connector is blocked, it only affects the transmission of the corresponding branch, while other branches can continue to operate, which significantly improves the fault tolerance and working efficiency of the equipment. Furthermore, standardized connectors and universal n-channel tubing improve component reusability and maintenance convenience. Because all connectors have a unified structure, the first, second, and third connectors are interchangeable (e.g., the third connector can be used as a branch connector to connect to other main connectors). The n-channel tubing is also universal at the inlet and outlet ends of any connector, significantly reducing the types of specialized components and inventory costs. During maintenance, if a connector is damaged, only that single connector needs to be replaced to restore system operation, without disassembling the entire transmission link, significantly reducing maintenance and upgrade costs. In some example embodiments of this disclosure, each feed end of the third connector is connected to the discharge ends of the first connector and the second connector respectively through an n-channel material pipe; The n-channel material tube includes n consumable tubes, each of which is provided with a consumable channel. Any two adjacent consumable tubes are connected by a connecting part in their extension direction. A second anti-fooling groove is formed between one side of the connecting part and the two adjacent consumable tubes. On the same feed end, any two adjacent feed ports are interconnected, and a first anti-fooling part is provided between the two adjacent feed ports; on a discharge end, any two adjacent discharge ports are interconnected, and a second anti-fooling part is provided between the two adjacent discharge ports. The n-channel feed tube is used to connect to the feed end, and the first error-proof part is placed in the second error-proof groove; the n-channel feed tube is used to connect to the discharge end, and the second error-proof part is placed in the second error-proof groove.

[0060] In this type of embodiment, n consumable tubes are connected as a whole along the extension direction through a connecting part. A second anti-mistake groove is formed by a recess on one side of the connecting part between adjacent consumable tubes, providing space for the anti-mistake fit. The first anti-mistake part at the feeding end and the second anti-mistake part at the discharging end are protruding structures, respectively corresponding to the second anti-mistake groove of the n-channel tube in the feeding and discharging scenarios, ensuring that the connection direction of the n-channel tube with the feeding end and the discharging end is unique and the position is accurate, and that it is compatible with the communication structure of the adjacent plug interface to avoid interference.

[0061] During feeding, the first anti-mistake part must be embedded in the second anti-mistake groove to complete the connection. During discharging, the second anti-mistake part must also match the second anti-mistake groove. If the direction is wrong or the position is off, the physical interference between the anti-mistake part and the anti-mistake groove will prevent the connection. This ensures that n consumable tubes correspond one-to-one with n connectors (feed connector and discharging connector). Even non-professionals can avoid incorrect connections and ensure the accuracy of multi-color / multi-type consumable transmission.

[0062] Secondly, the unified second anti-mistake groove design improves the versatility of the n-channel feed tube. The second anti-mistake groove of the same n-channel feed tube can be adapted to both the first anti-mistake part at the feed end and the second anti-mistake part at the discharge end, eliminating the need to distinguish between feed-specific and discharge-specific feed tubes, reducing the types of dedicated parts and lowering inventory costs. Simultaneously, when the 3D printing equipment needs to adjust the n-channel feed tube layout (such as moving a section of feed tube from the feed end to the discharge end), there is no need to replace the feed tube; it can be reused directly, solving the versatility problem of traditional feed tube and interface binding.

[0063] In addition, the connecting part connects n consumable tubes into a whole, forming a rigid or semi-rigid integrated structure. It can be operated as a whole when plugging and unplugging, and with the foolproof positioning, there is no need to calibrate them one by one, which greatly improves the efficiency of installation and disassembly. At the same time, the existence of the connecting part keeps adjacent consumable tubes at a fixed interval, avoiding channel blockage caused by squeezing or tangling, and ensuring smooth transmission.

[0064] According to a third aspect of the embodiments of this specification, a 3D printing apparatus is provided, including the consumable transmission component, consumable storage device and apparatus body described in the second aspect; The consumable storage device is provided with multiple consumable storage sections, the consumable transmission component is connected to the consumable storage device, and the feed ends of the first connector and the second connector are connected to each of the consumable storage sections; The device body is equipped with a printhead assembly, and the third connector is connected to the printhead assembly through the discharge end.

[0065] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this specification. Attached Figure Description

[0066] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this specification and, together with the description, serve to explain the principles of this specification.

[0067] Figure 1 This is one of the schematic diagrams of the overall structure of the consumable transmission connector shown in the embodiments of this specification; Figure 2 This is the second schematic diagram of the overall structure of the consumable transmission connector shown in the embodiments of this specification; Figure 3 This is one of the exploded views of the consumable transmission connector shown in the embodiments of this specification; Figure 4 This is the second exploded view of the consumable transfer connector shown in the embodiments of this specification (connecting n-channel material tubes); Figure 5 This is the third exploded view of the consumable transmission connector shown in the embodiments of this specification; Figure 6 This is the fourth exploded view of the consumable transmission connector shown in the embodiments of this specification; Figure 7 This is a schematic diagram of the feed end structure shown in the embodiments of this specification; Figure 8 This is a schematic diagram of the discharge end structure shown in the embodiments of this specification; Figure 9 This is one of the schematic diagrams of the consumable transmission component structure shown in the embodiments of this specification; Figure 10 This is the second schematic diagram of the consumable transmission component structure shown in the embodiments of this specification.

[0068] Explanation of reference numerals in the attached figures 10. Connector body; 11. Feed end; 111. Feeding interface; 112. First channel enclosure; 1121. First notch; 1122. First foolproof component; 1123. First foolproof part; 1124. First clearance part; 1125. Mounting hole; 12. Branch of transmission channel; 13. Main of transmission channel; 14. Mounting plate; 15. Foolproof protrusion; 20. Connector housing; 21. Discharge end; 211. Discharge interface; 212. Second channel 2121, Second notch; 2122, Second foolproof component; 2123, Second foolproof part; 2124, Second avoidance part; 22, Receiving cavity; 23, First limiting baffle; 231, Insertion port; 24, Second limiting baffle; 25, First foolproof groove; 30, n-channel material tube; 31, Consumable tube; 311, Consumable channel; 32, Connecting part; 33, Second foolproof groove; 40, First connector; 50, Second connector; 60, Third connector. Detailed Implementation

[0069] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0070] Although relative terms such as "up" and "down" are used in this specification to describe the relative relationship of one component of an icon to another, these terms are used only for convenience, such as according to the orientation of the examples shown in the accompanying drawings. It is understood that if the device of the icon is flipped upside down, the component described as "up" will become the component described as "down." When a structure is "up" of another structure, it may mean that the structure is integrally formed on the other structure, or that the structure is "directly" mounted on the other structure, or that the structure is "indirectly" mounted on the other structure through another structure.

[0071] The terms “a,” “one,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “including” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to the listed elements / components / etc.; the terms “first,” “second,” and “third,” etc., are used only as markers and are not a limitation on the number of objects.

[0072] In this disclosure, terms such as "perpendicular" and "equal" refer to perpendicularity and equality within the range of process error, not absolute perpendicularity and equality. Process error can be within ±10% or ±5%. For example, if two directions are perpendicular, it can be understood that the angle between the two directions can be 90° ± 5°.

[0073] This disclosure provides a consumable transfer connector, which can be applied to the device body of a 3D printing equipment or a consumable storage device. Through modular design, it enables convenient expansion and combination of consumable transfer channels, realizing centralized transmission and convergence of multiple types (such as filaments, liquids, and gases) and multiple colors of consumables. This improves the adaptability of the equipment to printing scenarios with multiple types and multiple colors of consumables, reduces user upgrade and maintenance costs, and improves the versatility and reusability of parts.

[0074] Please refer to the instruction manual attached. Figures 1-6 The consumable transmission connector includes a connector body 10 and a connector housing 20, wherein the connector housing 20 is fitted onto the connector body 10 to form a compact transmission unit.

[0075] Specifically, the connector body 10 serves as the supporting foundation for the consumable transmission connector. The connector body 10 has m feed ends 11 (m is a positive integer greater than 1). Each feed end 11 is used to connect to an n-channel feed tube 30 (n is a positive integer greater than 1). Therefore, to achieve effective connection between the feed end 11 and the n-channel feed tube 30, each feed end 11 also needs to be equipped with n feed interfaces 111, corresponding to the n consumable channels 311 in the n-channel feed tube 30. For example, when m=2 and n=2, the connector body 10 has two feed ends 11, each containing two feed interfaces 111, which can simultaneously connect to two 2-channel feed tubes, receiving four consumables.

[0076] The connector body 10 also has m×n transmission channel branches 12 and n transmission channel trunks 13, forming a hierarchical transmission structure from branches to trunks. The transmission channel branches 12 directly correspond to the feed inlet interfaces 111 of the feed end 11, responsible for receiving consumables from the n-channel feed tubes 30. The transmission channel trunks 13 converge the transmission channel branches 12 corresponding to multiple feed ends 11, realizing the merging and transmission of m consumable channels 311, and finally connecting to the discharge end 21 through the transmission channel trunks 13, completing the "multiple inlets, one outlet" convergence function. For example, when m=2 and n=2, each of the two feed ends 11 has two feed inlet interfaces 111, corresponding to four transmission channel branches 12; the two transmission channel trunks 13 respectively connect to the two transmission channel branches 12 of the two feed ends 11, realizing the convergence of two consumable channels to one. For example, when m=3 and n=2, the connector body 10 has three feed ends 11, each containing two feed ports 111 for simultaneously connecting three 2-channel feed tubes to receive six consumables. These six consumables are then routed through six transmission channel branches 12, ultimately converging into two transmission channel trunks 13, and output from the two output ports 211 of the output end 21. This structure is suitable for scenarios requiring more colors or material types but with a limited number of printheads.

[0077] The connector housing 20 serves as a protective and auxiliary carrier for the connector body 10. In the specific application scenario of this consumable transmission connector, it mainly undertakes functions such as structural protection. The connector housing 20 encloses the core transmission part of the connector body 10, which can effectively prevent external dust, moisture or mechanical collisions from damaging the transmission channel (transmission channel branch 12, transmission channel main 13) and the feed interface 111 (feed end 11). At the same time, the shell wall of the connector housing 20 is tightly fitted to the connector body 10.

[0078] The above embodiments enable the consumable transfer connector to connect with the n-channel feed tube 30, achieving connection between it and the upstream consumable transfer connector or upstream equipment. To allow the consumable transfer connector to connect with the n-channel discharge tube 30, achieving connection between it and the downstream consumable transfer connector or downstream equipment, the connector housing 20 is provided with a discharge end 21. This discharge end 21 has n discharge ports 211, each corresponding to one of the n main transmission channels 13, used to connect to the n-channel discharge tube 30, transmitting the consumables flowing into the main transmission channels 13 downstream. For example, when m=2 and n=2, the discharge end 21 has two discharge ports 211, and the two main transmission channels 13 each correspond to two discharge ports 211. When the two-channel discharge tube is connected to the discharge end 21, each consumable tube 31 in the two-channel tube is connected to one of the two discharge ports 211.

[0079] For further implementation methods, please refer to the instruction manual. Figure 1 , Figure 2 , Figure 7 , Figure 8 To improve the versatility of the consumable transmission connector, the feed end 11 and the discharge end 21 adopt the same structural design. Specifically, the n feed ports 111 of the feed end 11 and the n discharge ports 211 of the discharge end 21 are completely identical in terms of quantity, spacing, and even the error prevention part mentioned later in this embodiment, and are all compatible with the same specification of n-channel material tube 30.

[0080] The above configuration simplifies the production process of the consumable transfer connector, allowing the feed end 11 and the output end 21 to be manufactured using the same mold. Most importantly, in scenarios where the consumable transfer connector is used in 3D printing equipment, it facilitates cascading expansion between connectors. The output end 21 can directly connect to the feed end 11 of other connectors as the upstream feed end 11, or it can directly connect to downstream equipment, providing more possibilities for the selection of the number of consumable channels 311 to meet different printing needs. Furthermore, when cascading or replacing consumable transfer connectors, there is no need to deliberately distinguish between "feed-only" and "output-only" functions, reducing maintenance costs and improving user convenience. For example, when two consumable transfer connectors need to be cascaded, the output end 21 of the upstream consumable transfer connector can be directly connected to the feed end 11 of the downstream connector via the n-channel feed tube 30, without the need for additional adapters.

[0081] Please refer to the instruction manual attached. Figure 1 , Figure 2 , Figure 7 , Figure 8 The feed end 11 and discharge end 21 of the consumable transfer connector are also provided with anti-mistake parts. On the same feed end 11, any two adjacent feed ports 111 are interconnected (i.e., there is no closed isolation between the feed ports 111), forming a continuous insertion and removal space. At the same time, a first anti-mistake part 1123 (such as a protrusion or rib) is provided between two adjacent feed ports 111, which is used to cooperate with the anti-mistake connector (such as a second anti-mistake groove 33) corresponding to the n-channel material tube 30.

[0082] Correspondingly, on the same discharge end 21, any two adjacent discharge ports 211 are also interconnected (i.e. there is no closed isolation between the discharge ports 211), and a second foolproof part 2123 is provided between two adjacent discharge ports 211, the structure of which is the same as the first foolproof part 1123, to ensure compatibility with the n-channel material tube 30.

[0083] The interconnected inlet port 111 and outlet port 211 avoid mechanical interference during the insertion and removal of the n-channel tubing 30, allowing each inlet end 11 and outlet end 21 to connect to only one n-channel tubing 30 to achieve the connection between the inlet port (inlet port 111, outlet port 211) and the consumable tube 31. Furthermore, the first foolproof part 1123 and the second foolproof part 2123 physically constrain the n-channel tubing 30 to be inserted only in a single direction. This ensures compatibility between the inlet end 11 and outlet end 21 with the uniformly structured n-channel tubing 30, preventing misconnection of different types or colors of consumables and ensuring smooth tubing insertion and removal.

[0084] For example, when n=2, the two feed ports 111 of the feed end 11 form a continuous space, and a first anti-misplacement part 1123 is located between adjacent feed ports 111, corresponding to a second anti-misplacement groove 33 on the 2-channel material tube. If the insertion direction is incorrect, the first anti-misplacement part 1123 will interfere with the outer wall of the n-channel material tube 30 and the connection cannot be completed.

[0085] Please continue to refer to the instruction manual appendix. Figures 1-7 To avoid making this embodiment too lengthy, this example only provides an illustrative description of the specific structure of the feeding end 11, which includes a first channel enclosure 112 and a first anti-mistake component 1122. The first channel enclosure 112 is fixed to the connector body 10, forming an outline frame of n feeding ports 111. A first notch 1121 is provided on its first side for installing the first anti-mistake component 1122. It can be understood that the first anti-mistake component 1123 is located between two adjacent feeding ports 111. Therefore, the specific location of the first notch 1121 on the first channel enclosure 112 depends on the arrangement of the feeding ports 111 on the connector body 10. For example, when n=2, the two feeding ports 111 are arranged along the left-right direction of the connector body 10. In this case, the first notch 1121 can be located on the upper or lower side of the first channel enclosure 112.

[0086] Following the above embodiment, the first anti-mistake component 1122 is embedded in the first notch 1121 and protrudes into the space enclosed by the first channel surrounding plate 112 to form the first anti-mistake part 1123. The direction of the protrusion of the first anti-mistake component 1122 intersects with the direction of the feed insertion interface 111 defined by the first channel surrounding plate 112 (which can also be understood as the insertion and removal direction of the n-channel material tube 30 on the feed end 11), so as to avoid interference with the insertion and removal process of the n-channel material tube 30. The first anti-mistake component 1122 divides the space enclosed by the first channel enclosure 112 into n feed ports 111, but maintains a distance from the second side of the first channel enclosure 112 (if the first notch 1121 is opened on the lower side of the first channel enclosure 112, the second side can be the upper side of the first channel enclosure 112), forming a first clearance part 1124, so that adjacent feed ports 111 can be connected to each other through the first clearance part 1124, which not only realizes the connection of the feed ports 111, but also provides a space for the anti-mistake part (such as the second anti-mistake groove 33) of the n-channel material tube 30, avoiding squeezing damage.

[0087] The first channel enclosure 112 can provide guidance for the n-channel material tube 30 during the insertion and removal process of the consumable transmission connector and the n-channel material tube 30, ensuring the stability of the insertion and removal direction. The first anti-misconnection component 1122 plays the role of preventing misconnection mentioned above and improving the connection accuracy between the n-channel material tube 30 and the feed end 11. For example, continuing with the example of n=2, the first channel enclosure 112 defines a long strip-shaped insertion and removal space. The first anti-mistake part 1122 is provided with a protrusion (first anti-mistake part 1123), which divides the space into two feeding interfaces 111. Each protrusion is precisely matched with the second anti-mistake groove 33 of the n-channel material tube 30. At the same time, the first anti-mistake part 1123 at the upper end of the first anti-mistake part 1122 and the right side of the first channel enclosure 112 are left with a certain gap as the first clearance part 1124 to ensure that the adjacent interfaces are connected, so that the two channels of material tubes can be connected as a whole.

[0088] Based on the above structural foundation, a locking component is detachably provided in the first clearance part 1124. The locking component is used to lock the n-channel material tube 30 connected to the feed end 11 to ensure the stability of the connection between the n-channel material tube 30 and the feed end 11.

[0089] Regarding the specific structural form of the locking component, this embodiment provides at least two of the following solutions: 1. The second side of the first channel enclosure 112 has a mounting hole 1125 (which may be a threaded hole) that connects to the first clearance portion 1124, and the locking component is a screw. When the n-channel tube 30 is inserted into the feed end 11 (the insertion and removal space defined by the first channel enclosure 112), the screw is screwed into the first clearance portion 1124 through the mounting hole 1125, and its end contacts the outer wall of the tube and applies pressure to press the tube onto the first anti-fooling portion 1123.

[0090] 2. A slot is provided on the second side of the first channel enclosure 112 to connect to the first clearance part 1124. The locking component is a wedge (such as an elastic plastic block) that is compatible with the slot. The wedge is inserted into the first clearance part 1124 through the slot. Its inclined structure protrudes towards the n-channel material tube 30 as the insertion depth increases, and finally presses the n-channel material tube 30 against the locking of the first anti-foolproof part 1123 at the feed end 11.

[0091] It is understood that the locking component is designed to secure the n-channel feed tube 30 within the feed end 11 by applying pressure or using a mechanical structure. In addition to the screw or wedge structure described above, the locking component can also be any other structure capable of achieving this function, such as, but not limited to, a snap-locking mechanism that uses an eccentric wheel for rotation, a pressure block that uses a lever principle for clamping, or a retaining strip that is fixed by elastic snap-fit.

[0092] In one embodiment, such as Figures 4-6 As shown, the transmission channel branch 12 and the transmission channel main 13 adopt a structure formed by the cooperation of the groove and the connector housing 20. The surface of the connector body 10 is provided with m×n first feed grooves and n first discharge grooves. All grooves extend along the insertion and extraction direction of the n channel material tube 30. It is worth noting that the insertion and extraction direction of the n channel material tube 30 does not refer to a specific direction, but can be understood as the direction from any feed end 11 to the discharge end 21, and / or from the discharge end 21 to any feed end 11. For example, when m=2 and n=2, the surface of the connector body 10 is provided with 4 first feeding grooves (2×2) and 2 first discharging grooves. The 4 first feeding grooves can be arranged on the connector body 10 according to each feeding interface 111, discharging interface 211 and their connection relationship. For example, when 2 feeding ends 11 are arranged in the vertical direction on the connector body 10, and the 2 feeding interfaces 111 in each feeding end 11 are arranged in the horizontal direction, the 4 first feeding grooves are opened on the left and right sides of the connector body 10 in pairs. The 2 first feeding grooves on the same side are respectively connected to the feeding interfaces 111 on the same side of the 2 feeding ends 11, and the ends of the first feeding grooves on the same side that are away from the feeding interfaces 111 are connected. The 2 first discharging grooves are also opened on the left and right sides of the connector body 10 respectively, and are connected to the first feeding grooves connected to the two sides respectively.

[0093] The shell wall of the connector housing 20 tightly covers the openings of each of the first feed troughs and the first discharge troughs, forming a closed transmission channel branch 12 with the first feed trough and a closed transmission channel main 13 with the first discharge trough.

[0094] The aforementioned technical means simplify the processing of transmission channel branches 12 and transmission channel trunk 13, and facilitate the cleaning of transmission channel branches 12 and transmission channel trunk 13. Furthermore, when the number of transmission channel branches 12 needs to be increased in the consumable transmission connector, only the corresponding first feed slots need to be added to the connector body 10, without redesigning the overall structure. For example, when it is necessary to expand n=2 to n=3, only the corresponding number of first feed slots need to be added to the connector body 10 (for example, when m=2, two more first feed slots are added).

[0095] In one embodiment, such as Figures 4-6 As shown, the connector housing 20 has a receiving cavity 22 extending along the insertion and removal direction to receive part of the connector body 10. The connector housing 20 has a first limiting baffle 23 and a second limiting baffle 24 at both ends in the insertion and removal direction. The first limiting baffle 23 has an insertion and removal port 231 that communicates with the receiving cavity 22. The insertion and removal port 231 serves as the insertion channel for the connector body 10. The second limiting baffle 24 supports the discharge end 21, forming a closed loop structure.

[0096] A mounting plate 14 is provided on one side of the feed end 11 of the connector body 10. When the connector body 10 is inserted into the receiving cavity 22, the mounting plate 14 abuts against the first limiting baffle 23, and is detachably connected to the first limiting baffle 23 by screws, clips, etc. In this embodiment, the receiving cavity 22 can limit the insertion and removal path of the connector body 10, while the first limiting baffle 23 and the second limiting baffle 24 can constrain the insertion depth of the connector body 10, ensuring the fitting accuracy between the connector housing 20 and the connector body 10. Secondly, the detachable connection between the mounting plate 14 and the first limiting baffle 23 can resist vibration, prevent relative displacement between the connector body 10 and the connector housing 20, and reduce the impact on the fitting relationship between the two during the operation of the 3D printing equipment. In addition, the detachable connection between the mounting plate 14 and the first limiting baffle 23 also facilitates the cleaning or replacement of the connector body 10. For example, when the transmission channel is blocked, simply unscrew the screws on the mounting plate 14 to pull out the connector body 10 and directly clear the blockage in the first feed trough and the first discharge trough.

[0097] Based on the structural foundation of the above-described embodiments, please continue to refer to the appendix of the instruction manual. Figures 4-6 The cavity 22 and the connector body 10 are designed with a rectangular cross-section. A foolproof structure can be set between the connector body 10 and the connector housing 20. The rectangular cross-section fit between the cavity 22 and the connector body 10 and the foolproof structure set between them can be selected individually or used simultaneously.

[0098] In one embodiment, the cross-section of the receiving cavity 22 is rectangular, and the cross-section of the insertion portion of the connector body 10 is the same, which can completely restrict the circumferential rotation of the connector body 10 within the receiving cavity 22 and prevent the channel from being misaligned due to rotation.

[0099] In another embodiment, the foolproof structure includes a first foolproof groove 25 and a foolproof protrusion 15. The first foolproof groove 25 is formed in the cavity wall of the receiving cavity 22 and extends along the insertion and removal direction of the connector body 10, providing corresponding clearance space for the foolproof protrusion 15 and playing a certain guiding role for the foolproof protrusion 15. The foolproof protrusion 15 is disposed on the surface of the connector body 10 and is adapted to the size and position of the first foolproof groove 25. When the connector body 10 is inserted into the receiving cavity 22, if the insertion direction of the connector body 10 is correct, the foolproof protrusion 15 can smoothly enter into the first foolproof groove 25, and as the connector body 10 is inserted deeper, the foolproof protrusion 15 can slide along the direction in which the first foolproof groove 25 is formed.

[0100] The accommodating cavity 22 and the connector body 10 are fitted with a rectangular cross section, and the foolproof structure between them plays a dual role in positioning the connector body 10 and the connector housing 20. The rectangular fit restricts rotation, and the foolproof groove restricts direction, ensuring that the connector body 10 can only be inserted into the connector housing 20 in the only correct posture.

[0101] In one embodiment, such as Figure 1 , Figure 2 As shown, the connector body 10 adopts a shape design that gradually narrows from the feed end 11 to the discharge end 21. That is, the cross-sectional dimensions (such as width and thickness) of the feed end 11 are larger than those of the discharge end 21, and the tapering occurs linearly or curvilinearly along the transmission direction. This design can effectively adapt to the convergence of the transmission channel branches 12. The feed end 11 needs to accommodate m×n transmission channel branches 12, resulting in a large cross-section. As the transmission channel branches 12 gradually converge to n transmission channel trunks 13, the cross-section of the discharge end 21 decreases accordingly, making the internal channel layout more compact. Inside the 3D printing equipment, the discharge end 21 is usually close to the print head, where space is limited. The narrowing design can reduce the overall size of the equipment, which is beneficial for the compact design of the 3D printing equipment. In addition, the narrowed contour can provide a natural guide for the connector body 10 to be inserted into the connector housing 20, facilitating rapid assembly and stable fit after assembly.

[0102] As an optional implementation, m feed ends 11 are arranged sequentially along a first direction (e.g., longitudinal direction), with equal spacing between adjacent feed ends 11 (e.g., 5 mm), and n feed inlets 111 of each feed end 11 are spaced apart along a second direction (e.g., transverse direction) with uniform spacing (e.g., 10 mm). Correspondingly, the n discharge ports 211 of the discharge end 21 are also arranged along the second direction, with the same spacing as the ports of the feed end 11. It is understood that the first and second directions are perpendicular to each other (e.g., longitudinal and transverse perpendicular). The longitudinally arranged feed end 11 can correspond to different consumable sources (e.g., different consumable storage devices), while the transversely arranged feed ports 111 and discharge ports can correspond to consumables of different colors or types, facilitating identification and maintenance. The orthogonal layout allows the internal transmission channel branches 12 to converge along straight lines or gentle curves, reducing intersections and bends and lowering the risk of consumable blockage.

[0103] For example, in the connector body 10 with m=2 and n=2, two feed ends 11 are arranged vertically, and two feed ports 111 of each feed end 11 are arranged horizontally. The feed ports 111 between each feed end 11 are aligned vertically to form a neat "2 rows and 2 columns" layout. The feed ports 111 aligned in the vertical direction converge through the corresponding transmission channel branch 12 and are finally output by the two horizontally arranged discharge ports 211.

[0104] It is understandable that, given that the structure of the discharge end 21 is consistent with that of the feed end 11, such as... Figure 8 As shown, the discharge end 21 includes a second channel enclosure 212 and a second anti-mistake member 2122. The second channel enclosure 212 is disposed on the connector housing 20 and defines n discharge insertion ports 211. A second notch 2121 is also provided on the first side of the second channel enclosure 212. The second anti-mistake member 2122 is disposed in the second notch 2121 and protrudes into the space enclosed by the second channel enclosure 212 along a direction intersecting the insertion and extraction direction to form a second anti-mistake part 2123. The second anti-mistake member 2122 separates the n discharge insertion ports 211. The second anti-mistake member 2122 and the second side of the second channel enclosure 212 form a second clearance part 2124 that connects two adjacent discharge insertion ports 211.

[0105] like Figures 9-10 As shown, this disclosure also provides a consumable transmission assembly, which is composed of multiple cascaded consumable transmission connectors as described above. Taking the smallest unit of a consumable transmission assembly as an example, for ease of understanding, this unit includes three consumable transmission connectors, which are defined as the first connector 40, the second connector 50, and the third connector 60, respectively. In the smallest unit of this consumable transmission assembly, the first connector 40 and the second connector 50 serve as branch connectors, receiving consumables from different sources respectively, while the third connector 60 serves as a converging connector. Each feed end 11 of the third connector 60 is connected to the discharge ends 21 of the first connector 40 and the second connector 50 through an n-channel feed pipe 30, respectively, to achieve secondary convergence of the channels.

[0106] Of course, in other embodiments, the first connector and the second connector included in the consumable transmission assembly may be one or more, while in a single assembly, the third connector is one.

[0107] In this embodiment, the cascading capability relies on the standardized design of the feed end 11 and the discharge end 21. The discharge end 21 of the branch connectors (first connector 40, second connector 50) and the feed end 11 of the concentrator connector (third connector 60) have completely identical structures and are both compatible with the same specification of n-channel material tube 30. The maximum number of channels in a single consumable transmission connector is m×n, and the number of channels can be increased through cascading. For example, two branch connectors with "m=2, n=2" (each with 4 channels) cascaded to a concentrator connector with "m=2, n=2" can form an 8-channel transmission capacity.

[0108] The number of channels can be further expanded by adding the smallest unit of the consumable transmission component (such as adding a fourth connector, a fifth connector, and a sixth connector). The output ends 21 of the fourth and fifth connectors are respectively connected to the feed end 11 of the sixth connector. There is no need to redesign the overall system. However, it should be noted that in the implementation where the fourth, fifth, and sixth connectors are added, both smallest units include a converging connector (the third connector 60 and the sixth connector). Both converging connectors can be connected to the 3D printing equipment (the printhead assembly). Alternatively, a seventh connector can be added, making the seventh connector a converging structure of the third connector 60 and the sixth connector. Its feed end 11 is connected to the output end 21 of the third connector 60 and the sixth connector. In this implementation, the third connector 60 and the sixth connector are used as branch connectors relative to the seventh connector, while serving as converging connectors.

[0109] In this implementation, if a consumable transmission connector fails, only its corresponding channel is affected, while other branches can work normally. This ensures that the corresponding consumable transmission connector can be replaced without shutting down the equipment, and the entire device does not need to be disassembled, thus reducing maintenance costs.

[0110] For example, in a 36-color 3D printing device, a four-level cascaded structure consisting of "nine 4-channel branch connectors, four 4-channel summary connectors, two 4-channel second summary connectors, and one 4-channel main connector" can be used to achieve stable transmission of 36 types of consumables. It is worth noting that this structure assumes the printhead assembly is connected to only two consumable channels. This assembly should allow the printhead assembly to be connected to more than two consumable channels, which can be achieved simply by adjusting the m-value of the consumable transmission connector.

[0111] Please refer to the instruction manual attached. Figure 4 , Figure 9 , Figure 10The n-channel material tube 30 used in the cascading process adopts an integrated structure. Its design works in conjunction with the foolproof part of the consumable transmission connector. The n-channel material tube 30 is composed of n independent consumable tubes 31. Each consumable tube 31 has a consumable channel 311, which corresponds to the transmission of a consumable. Any two adjacent consumable tubes 31 are connected along the extension direction through the connecting part 32 to form an integral structure. A second foolproof groove 33 (such as a groove) is formed between one side of the connecting part 32 and the adjacent consumable tube 31.

[0112] When the n-channel feed tube 30 is connected to the feed end 11, the first anti-misalignment part 1123 of the feed end 11 is embedded in the second anti-misalignment groove 33; when connected to the discharge end 21, the second anti-misalignment part 2123 of the discharge end 21 is embedded in the second anti-misalignment groove 33, achieving precise positioning. The cooperation between the second anti-misalignment groove 33, the first anti-misalignment part 1123, and the second anti-misalignment part 2123 ensures that the connection direction between the n-channel feed tube 30 and the consumable transmission connector is unique, avoiding channel misalignment during the cascading process. At the same time, the connecting part 32 integrates the n consumable tubes 31 into one unit, avoiding loose tangling and facilitating wiring and maintenance. The unified anti-misalignment groove design allows the feed tube to be used interchangeably between any feed end 11 and discharge end 21, improving the component reuse rate.

[0113] In addition, this disclosure also provides a 3D printing device, which includes the consumable transmission component, consumable storage device and device body provided in any of the above embodiments.

[0114] The consumable storage device is equipped with multiple consumable storage sections (such as material boxes and material rolls) for storing different types or colors of printing consumables (such as PLA, ABS, resin, etc.); the consumable transmission component consists of multiple cascaded consumable transmission connectors, with the feed ends 11 of the first connector 40 and the second connector 50 respectively connected to each consumable storage section to receive consumables; the main body of the equipment is equipped with a printhead assembly, and the discharge end 21 of the third connector 60 is connected to the printhead assembly through an n-channel material pipe 30 to transport the collected consumables to the printhead to complete the printing operation.

[0115] The workflow of this 3D printing equipment is as follows: 1. Consumables are output from each consumable storage section of the consumable storage device and transmitted to the feed end 11 of the first connector 40 and the second connector 50 through the n-channel feed pipe 30. 2. The first and second connectors 50 collect consumables through the internal transmission channel branch 12 to the transmission channel main 13, selectively outputting the corresponding materials from the discharge end 21, and outputting them through the feed end 11 of the third connector 60 to the corresponding discharge end 21 of the third connector 60. 3. Based on the consumables required by the 3D printing equipment, the consumable storage device controls the output of the corresponding consumable storage section, so that the corresponding consumables can be output from the third connector 60 through the corresponding first or second connector 50. 4. When the 3D printing equipment needs to replace different types or colors of consumables, the consumable storage device controls the corresponding consumable storage section to perform a material removal (extraction) operation. After the original consumable is removed from the third connector 60, the consumable to be replaced is transferred through the corresponding consumable storage section to the third connector 60 through the first or second connector 50, and then output to the equipment body through the third connector 60.

[0116] The foregoing has described specific embodiments of this specification. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recited in the claims may be performed in a different order than that shown in the embodiments and may still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require the specific or sequential order shown to achieve the desired result. In some embodiments, multitasking and parallel processing are possible or may be advantageous.

[0117] Other embodiments of this specification will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models claimed herein. This specification is intended to cover any variations, uses, or adaptations that follow the general principles of this specification and include common knowledge or customary techniques in the art not claimed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this specification are indicated by the following claims.

[0118] It should be understood that this specification is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this specification is limited only by the appended claims.

[0119] The above description is merely a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this specification should be included within the scope of protection of this specification.

Claims

1. A consumable transmission connector, characterized in that, A device body or consumable storage device for use in 3D printing equipment, wherein the consumable transfer connector includes a connector body and a connector housing, and the connector housing is sleeved on the connector body; The connector body has m feed ends, and each feed end has n feed ports; The connector body is also provided with m×n transmission channel branches for inputting consumables and n transmission channel trunks. Each of the feeding ports corresponds to each of the transmission channel branches. Each of the transmission channel trunks is connected to one of the transmission channel branches corresponding to each of the feeding ports, so that the m transmission channel branches converge into one transmission channel trunk. The connector housing has a discharge end, and the discharge end has n discharge ports, each of which corresponds to each of the transmission channel trunks. Where m and n are positive integers greater than 1.

2. The consumable transmission connector according to claim 1, characterized in that, The feed end and the discharge end have the same structure.

3. The consumable transmission connector according to claim 1 or 2, characterized in that, On one of the feed ends, any two adjacent feed ports are interconnected, and a first anti-fooling part is provided between the two adjacent feed ports. On one of the discharge ends, any two adjacent discharge ports are interconnected, and a second anti-fooling part is also provided between the two adjacent discharge ports.

4. The consumable transmission connector according to claim 3, characterized in that, The feed end includes: A first channel enclosure is disposed on the connector body and defines n feeding ports. A first notch is also provided on the first side of the first channel enclosure. A first anti-mistake component is disposed at the first notch. The first anti-mistake component includes a first anti-mistake part, which protrudes from the first anti-mistake component toward the space defined by the first channel enclosure. The protrusion direction of the first anti-mistake part intersects with the insertion and removal direction. The first anti-mistake component separates n feeding ports. The first anti-mistake component and the second side of the first channel enclosure form a first clearance portion that connects two adjacent feeding ports. The first side and the second side of the first passage enclosure are located on opposite sides of the first passage enclosure.

5. The consumable transmission connector according to claim 4, characterized in that, The first clearance portion is detachably provided with a locking component for locking the n-channel material tube connected to the feed end.

6. The consumable transmission connector according to claim 5, characterized in that, The second side of the first channel enclosure is provided with a mounting hole that connects to the first clearance portion; The locking component is a screw, which is detachably installed on the first channel enclosure through the mounting hole and can extend into the first clearance portion through the mounting hole.

7. The consumable transmission connector according to claim 5, characterized in that, The second side of the first channel enclosure is provided with a slot that communicates with the first clearance portion; The locking component is a wedge block, which is detachably installed on the first channel enclosure through the slot and protrudes into the first clearance portion through the groove of the slot.

8. The consumable transmission connector according to claim 1, characterized in that, The main body of the connector has m×n first feed grooves extending along the insertion and extraction direction, and n first discharge grooves. The shell wall of the connector housing covers the first feed trough and the first discharge trough, and together with the first feed trough and the first discharge trough, respectively encloses the branch of the transmission channel and the main of the transmission channel.

9. The consumable transmission connector according to claim 1, characterized in that, The connector housing has a receiving cavity extending in the insertion and extraction direction. The two ends of the connector housing are also provided with a first limiting baffle and a second limiting baffle. The first limiting baffle has an insertion port communicating with the receiving cavity. The connector body is at least partially disposed in the receiving cavity through the insertion port. The discharge end is disposed on the second limiting baffle. The connector body has an installation plate on one side with the feed end, and the installation plate abuts against the first limiting baffle and is detachably connected to the first limiting baffle.

10. The consumable transmission connector according to claim 9, characterized in that, The cross-sectional shape of the receiving cavity is rectangular, and the portion of the connector body used for assembly within the receiving cavity matches the structure of the receiving cavity; and / or The cavity wall of the receiving cavity and the surface of the connector body are provided with a foolproof structure.

11. The consumable transmission connector according to claim 10, characterized in that, The error-proof structure includes: A first anti-mistake groove is formed in the cavity wall of the receiving cavity, and the extension direction of the first anti-mistake groove is consistent with the extension direction of the cavity wall of the corresponding receiving cavity. A foolproof protrusion is provided on the connector body, and the foolproof protrusion is slidably placed in the first foolproof groove.

12. The consumable transmission connector according to claim 1, characterized in that, The main body of the connector gradually narrows from the infeed end to the discharge end.

13. The consumable transmission connector according to claim 1, characterized in that, m feed ends are arranged sequentially along the first direction on the connector body, and the feed inlet of each feed end is arranged at intervals along the second direction. The discharge ports at the discharge end are arranged sequentially at intervals along the second direction; The first direction and the second direction are perpendicular to each other.

14. A consumable transmission component, characterized in that, include: One or more first connectors; One or more second connectors; A third connector; Wherein, the discharge end of the first connector is adapted to be connected to a feed end of the third connector, and the discharge end of the second connector is adapted to be connected to another feed end of the third connector; The first connector, the second connector, and the third connector are each independently a consumable transmission connector as described in any one of claims 1-13.

15. The consumable transmission assembly according to claim 14, characterized in that, Each feed end of the third connector is connected to the discharge ends of the first connector and the second connector respectively through an n-channel material pipe; The n-channel material tube includes n consumable tubes, each of which is provided with a consumable channel. Any two adjacent consumable tubes are connected by a connecting part in their extension direction. A second anti-fooling groove is formed between one side of the connecting part and the two adjacent consumable tubes. On the same feed end, any two adjacent feed ports are interconnected, and a first anti-fooling part is provided between the two adjacent feed ports; on a discharge end, any two adjacent discharge ports are interconnected, and a second anti-fooling part is provided between the two adjacent discharge ports. The n-channel feed tube is used to connect to the feed end, and the first error-proof part is placed in the second error-proof groove; the n-channel feed tube is used to connect to the discharge end, and the second error-proof part is placed in the second error-proof groove.

16. A three-dimensional printing device, characterized in that, Includes the consumables transmission assembly, consumables storage device, and device body as described in claim 14 or 15; The consumable storage device is provided with multiple consumable storage sections, the consumable transmission component is connected to the consumable storage device, and the feed ends of the first connector and the second connector are connected to each of the consumable storage sections; The device body is equipped with a printhead assembly, and the third connector is connected to the printhead assembly through the discharge end.

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