CN113799391B

CN113799391B - 3D printer multicolor wire feeding device and working method thereof

Info

Publication number: CN113799391B
Application number: CN202111081392.5A
Authority: CN
Inventors: 周忠诚; 张舜德
Original assignee: Quanzhou Institute of Information Engineering
Current assignee: Quanzhou Institute of Information Engineering
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2023-04-18
Anticipated expiration: 2041-09-15
Also published as: CN113799391A

Abstract

The invention relates to a multicolor wire feeding device of a 3D printer and a working method thereof, wherein the multicolor wire feeding device comprises a remote wire feeding motor, a remote wire feeding support and a remote wire feeding mechanism, the remote wire feeding motor is in transmission connection with a long shaft, a row of remote wire feeding mechanisms fixed on the remote wire feeding support are arranged along the axial direction of the long shaft, the remote wire feeding mechanism comprises a rack, a clutch assembly and a wire feeding assembly, and the clutch assembly comprises an electromagnetic push rod and a clutch gear; the wire feeding assembly comprises a wire feeding sleeve, a wire discharging sleeve, a wire feeding gear and a wire feeding guide wheel, the wire feeding gear is rotationally positioned on the rack, the wire feeding gear and the wire feeding guide wheel are meshed between the wire feeding sleeve and the wire discharging sleeve, and the wire feeding guide wheel elastically swings relative to the rack through a guide wheel bracket. When the wire feeding device works, the long shaft is fixedly provided with the transmission gears respectively corresponding to the remote wire feeding mechanisms, and the clutch gear is meshed with the corresponding transmission gears and the wire feeding gears to form wire conveying when being linked in place along with the electromagnetic push rod, so that the switching control of wire feeding of the remote wire feeding mechanisms is realized, and the wire feeding device is flexible and convenient.

Description

3D printer multicolor wire feeding device and working method thereof

Technical Field

The invention relates to a printing device, in particular to a multicolor wire feeding device of a 3D printer and a working method thereof.

Background

There are many printing methods of the existing 3D printing apparatus, such as light curing type, laser selective sintering type, fused deposition modeling, powder adhesion modeling, etc., but only fused deposition modeling 3D printers are widely used in manufacturing nowadays due to the problems of safety, cost, etc. There are also many types of 3D printers that adopt fused deposition modeling, and regardless of the difference of their running mechanisms, the wire feeding mode of the printer has one inlet and one outlet, two inlets and two outlets, two inlets and one outlet, etc., and among them, the two inlets and one outlet type printing nozzle has a certain degree of breakthrough than the former several, but the structure still has some defects, for example: the adoption of the structure with more inlets and one outlet can meet the requirement of printing three colors and four colors, thereby greatly increasing the weight of the spray head, and influencing the printing besides the structure which looks heavy. In addition, the above-mentioned mode of advancing one more belongs to the simple and adds up the wire feeder, often needs every wire feeder to arrange a step motor, and this not only leads to the structure volume great, and the cost is higher, and each step motor all needs independent control, and the control part is comparatively complicated. For this reason, improvements to existing printer wire feeders are desired.

Disclosure of Invention

In order to overcome the defects, the invention aims to provide a multicolor wire feeding device of a 3D printer and a working method thereof, so that the technical problems of large structure volume, high cost and inconvenient control of the conventional fused deposition modeling type 3D printer are solved. The purpose is realized by the following technical scheme.

A3D printer polychrome wire drive feed unit, the apparatus includes the long-range wire drive feed unit, its structural feature lies in the long-range wire drive feed unit includes the long-range wire drive feed motor, long-range wire drive feed support, long-range wire drive feed mechanism, the long-range wire drive feed motor is fixed in long-range wire drive feed support, and the transmission connects the major axis, there are one row of long-range wire drive feed mechanisms fixed in long-range wire drive feed support axially along the major axis, long-range wire drive feed mechanism includes the stander, the clutch module, wire drive feed assembly, the stander is fixed in long-range wire drive feed support, the clutch module includes electromagnetic push rod, clutch gear, the electromagnetic push rod is fixed in the stander, the push rod end of the electromagnetic push rod has inclined plane ejector pad, the clutch gear rotates and positions in the sliding block, the sliding block slides relative to the stander, and the sliding direction is perpendicular to the pushing direction of the electromagnetic push rod, one end of the sliding block has inclined plane, and cooperates with inclined plane of the end inclined plane ejector pad of the electromagnetic push rod, another end sets up the tension spring used for the sliding reset of sliding block between the said stander; the wire feeding assembly comprises a wire feeding sleeve, a wire discharging sleeve, a wire feeding gear, a wire feeding guide wheel and a guide wheel support, wherein the wire feeding sleeve and the wire discharging sleeve are fixed on the rack, an inlet of the wire feeding sleeve and an outlet of the wire discharging sleeve are exposed relative to the rack, the outlet of the wire feeding sleeve is opposite to the inlet of the wire discharging sleeve, the wire feeding gear is rotatably positioned on the rack, the wire feeding gear and a clutch gear of the sliding block are positioned in a meshing plane, the wire feeding guide wheel is rotatably positioned on the guide wheel support, the guide wheel support is rotatably positioned on the rack, a spring for swinging and resetting the guide wheel support is arranged between the guide wheel support and the rack, and the wire feeding guide wheel is meshed with the wire feeding gear under the action of the spring to form wire transmission between the wire feeding sleeve and the wire discharging sleeve; the long shaft connected with the remote wire feeding motor is fixedly provided with a transmission gear which is respectively positioned in a meshing plane with a wire feeding gear in each remote wire feeding mechanism, when the electromagnetic push rod pushes the inclined plane push block to be in place, the sliding block slides to the clutch gear to be meshed with the transmission gear and the wire feeding gear, and when the inclined plane push block is pushed to be in place, one end of the inclined push surface of the sliding block is limited and kept. Through the structure, the single remote wire feeding motor is controlled to control the plurality of remote wire feeding mechanisms, so that the trouble that each remote wire feeding mechanism needs to be independently connected with the motor is avoided, the whole volume is greatly optimized and reduced, in addition, the electromagnet is matched with the automatic device, the switching control of wire feeding of each remote wire feeding mechanism is realized, and the control mode is flexible, convenient, simple and reliable.

The electromagnetic push rod of the clutch component is replaced by an electromagnet and an automatic device, the electromagnet is fixed on the rack, the automatic device comprises a housing, a magnetic suction push rod and an ejector rod, the housing is fixed on the rack, the magnetic suction push rod and the ejector rod are respectively in non-rotary telescopic fit with two ends of the housing, the ejector rod is sleeved with a return spring for retracting and resetting the ejector rod relative to the housing, a rotor is arranged in the housing and abutted between the magnetic suction push rod and the ejector rod, the end of the rotor and the end of the magnetic suction push rod are in tooth-shaped engagement, and under the engagement action, the rotor forms one swing rotation once when being pushed in place along with the magnetic suction push rod, and in every two swing rotations, one swing rotation forms axial locking relative to the housing, the ejector rod is in a state of extending out and in place relative to the housing, the other swing rotation releases the axial locking of the rotor and the housing, and the ejector rod retracts and resets relative to the housing under the action of the return spring; the outer end of the magnetic suction push rod is provided with a magnetic suction head which is matched with the electromagnet in a magnetic suction manner, and the outer end of the ejector rod is integrated with the inclined plane push block; when the ejector rod of the automatic device extends in place, the sliding block slides to the clutch gear to be meshed with the transmission gear and the wire feeding gear, and the inclined plane push block extending in place limits and keeps one end of the sliding block. This structure is an alternative implementation of the clutch assembly.

The device also comprises a short-range wire feeding device and a pipeline wire feeding center, wherein the short-range wire feeding device comprises a short-range wire feeding support, a short-range wire feeding motor and a short-range wire feeding component, the short-range wire feeding component comprises a wire feeding pipe, a wire discharging pipe, a feeding gear, a feeding guide wheel and a swinging support, the wire feeding pipe and the wire discharging pipe are both fixed on the short-range wire feeding support, an inlet of the wire feeding pipe and an outlet of the wire discharging pipe are exposed relative to the short-range wire feeding support, an outlet of the wire feeding pipe is opposite to an inlet of the wire discharging pipe, the short-range wire feeding motor is fixed on the short-range wire feeding support and is in transmission connection with the feeding gear, the feeding guide wheel is rotatably positioned on the swinging support, the swinging support is rotatably positioned on the short-range wire feeding support, a pressing spring for swinging and resetting the swinging support is tightly abutted between the swinging support and the short-range wire feeding support, and the swinging support drives the feeding guide wheel to be meshed with the feeding gear to form wire material transmission between the wire feeding pipe and the wire discharging pipe under the effect of the pressing spring; the pipeline wire feeding center is a wire feeding pipe fitting with multiple inlets and a single outlet, the inlet of the pipeline wire feeding center is respectively communicated with the wire outlet sleeve of each remote wire feeding mechanism, and the outlet of the pipeline wire feeding center is communicated with the wire inlet pipe of the short-range wire feeding device. Through the structure, the pipeline wire feeding center is utilized to realize that the remote wire feeding mechanism selectively feeds corresponding wires into the short-range wire feeding device according to the requirement, and the short-range wire feeding device feeds the wires to realize printing, thereby meeting the requirement of multi-color printing.

And the guide wheel support of the wire feeding assembly and the swinging support of the short-range wire feeding assembly are integrated with handles for manually controlling swinging. Through this structure, make things convenient for the manual work to cut off and send a operation.

The spring that the guide wheel support corresponds is cup jointed in bolt A, and bolt A one end supports tight guide wheel support, and the other end connects adjusting nut A after stretching out the frame, the spring supports tightly the spacing between bolt A supports tight end and frame.

And a compression spring corresponding to the swing support is sleeved on the bolt B, one end of the bolt B is abutted against the swing support, the other end of the bolt B extends out of the short-range wire feeding support and then is connected with an adjusting nut B, and the compression spring is abutted against and limited between the abutted end of the bolt B and the short-range wire feeding support.

A conical guide hole is formed in an outlet of the pipeline wire feeding center. Through this structure, make things convenient for the guide of silk material to carry.

The sliding block is connected one end of the tension spring and is a shaft rod which is sleeved with the tension spring, the shaft rod extends out of the rack, and a limit switch which is used for limiting and sensing the shaft rod end extending out of the sliding block is arranged outside the rack. Through this structure, utilize limit switch response sliding block state that targets in place to be convenient for discern present long-range wire feeding mechanism's the state of sending after the outage, in time adjust long-range wire feeding mechanism's the state of sending.

The frame of the remote wire feeding mechanism is provided with a bearing seat, and a ball bearing matched with the long shaft is arranged in the bearing seat. With this structure, the stability of the rotation of the long shaft is improved.

The working method of the multicolor wire feeding device of the 3D printer comprises the following steps: the long shaft is driven to rotate by the long-distance wire feeding motor, when wires with specified colors are needed, a clutch component of the corresponding long-distance wire feeding mechanism is controlled, the clutch gear is meshed with the transmission gear and the wire feeding gear, the wire feeding gear and the wire feeding guide wheel realize that the wires are conveyed from the wire inlet sleeve to the wire outlet sleeve and enter along an inlet of the pipeline wire feeding center, the wires are guided into a wire inlet pipe of the short-range wire feeding device from an outlet of the pipeline wire feeding center, the short-range wire feeding motor of the short-range wire feeding device drives the feeding gear to rotate, the wire feeding gear and the feeding guide wheel realize that the wires are conveyed from the wire inlet pipe to the wire outlet pipe, the long-distance wire feeding mechanism and the short-range wire feeding device synchronously feed wires, and finally the wires are conveyed to a printing nozzle of a printer to realize printing operation; when the wires with different colors need to be replaced, the remote wire feeding motor and the short-range wire feeding motor are reversely controlled to rotate until the original printed wires return to the inlet of the wire feeding center of the pipeline, and at the moment, the remote wire feeding mechanism of the other wire with the required color is started to work, so that the wires are conveyed in the same way, and the multicolor printing is realized.

The invention realizes the control of a plurality of remote wire feeding mechanisms through a single remote wire feeding motor, thereby simplifying the structure and the control, reducing the whole volume, and simultaneously adopts a pipeline wire feeding center to connect each remote wire feeding mechanism with one short-range wire feeding device, thereby realizing the wire feeding control of multiple inlets and outlets and being convenient for better realizing multicolor printing; it is suitable for being used as a wire feeding device of various fused deposition modeling printers or the structural improvement of the similar device.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

FIG. 2 is a perspective view of the single remote wire feeder of FIG. 1.

FIG. 3 is a schematic view of the internal gearing of the remote wire feeder of the present invention.

FIG. 4 is a schematic view of the assembly structure of the automatic device of the present invention.

Fig. 5 isbase:Sub>A schematic view of the housing of fig. 4, taken along linebase:Sub>A-base:Sub>A.

Fig. 6 isbase:Sub>A schematic sectional viewbase:Sub>A-base:Sub>A of fig. 5.

FIG. 7 is a cross-sectional view of the wire feeding hub of the present invention.

FIG. 8 is a schematic diagram of the internal configuration of the proximity wire feeder of the present invention.

The sequence numbers and names in the figure are: 1. the device comprises a remote wire feeding motor, 2, a remote wire feeding support, 3, a long shaft, 4, a transmission gear, 5, an electromagnet, 6, a remote wire feeding mechanism, 601, a frame, 602, a bearing, 603, a sliding block, 6031, a shaft rod, 604, a clutch gear, 605, a tension spring, 606, a limit switch, 607, a wire feeding sleeve, 608, a wire feeding gear, 609, a wire feeding guide wheel, 610, a guide wheel support, 611, a spring, 612, a bolt A,613, an adjusting nut A,614, a wire discharging sleeve, 7, an automatic device, 701, a housing, 7011, a sliding chute, 7012, a hooking groove, 702, a magnetic attraction push rod, 703, a magnetic attraction head, 704, a slope push block, 705, a push rod, 706, a return spring, 8, a pipeline wire feeding center, 801, a conical guide hole, 9, a short wire feeding device, 901, a short wire feeding support, 902, a wire feeding pipe, 903, a feeding gear, 904, a feeding gear, a swinging support, 906, a pressing spring, 907 and a wire discharging pipe.

Detailed description of the preferred embodiments

The invention will now be further described with reference to the accompanying drawings.

As shown in FIG. 1, the printer wire feeder includes a remote wire feeder, a conduit wire feed hub 8, and a proximity wire feeder 9. As shown in fig. 2-6, the remote wire feeding device includes a remote wire feeding motor 1, a remote wire feeding support 2, and a remote wire feeding mechanism 6, the remote wire feeding motor 1 is fixed on the remote wire feeding support 2, the remote wire feeding motor 1 is connected to the long shaft 3 in a transmission manner, the remote wire feeding support 2 is fixedly provided with a row of remote wire feeding mechanisms 6 axially arranged along the long shaft 3, in the figure, three remote wire feeding mechanisms 6 are provided, and each wire feeding mechanism corresponds to the wire material transmission of a corresponding color. The remote wire feeder 6 comprises a frame 601, a clutch assembly and a wire feeding assembly, wherein the frame 601 is fixed with the remote wire feeding support 2. The clutch component comprises an electromagnet 5 and an automatic device 7, the automatic device 7 comprises a housing 701, a magnetic suction push rod 702 and a push rod 705, the housing 701 is fixed on a rack 601, the magnetic suction push rod 702 and the push rod 705 are respectively in non-rotary telescopic fit with two ends of the housing 701, wherein the push rod 705 is sleeved with a return spring 706 for contraction and return of the push rod 705 relative to the housing 701, a rotor inserted and sleeved at the inner end of the magnetic suction push rod 702 is arranged between the magnetic suction push rod 702 and the push rod 705 in the housing 701, the rotor is in abutting fit with the inner end of the push rod 705, the rotor is meshed with the inner end of the magnetic suction push rod 702 in a tooth form, a sliding groove 7011 adapted to slide axially of the rotor is arranged on the inner wall of the housing 701, and a hook groove 7012 adapted to switch between an axial locking state and an axial locking releasing state after the rotor swings, namely, the rotor forms one swing rotation once when being pushed to the position with the magnetic suction push rod 702, and swings twice, wherein the one swing rotation forms the axial locking relative to the hook groove 7012 of the housing 701, and the push rod is in an extending state relative to the housing 701; the other swing is to release the axial locking of the rotor and the housing 701, the rotor slides into the sliding groove 7011 of the housing 701 and is retracted and reset relative to the housing 701 along with the push rod 705 under the action of the reset spring 706. The outer end of the magnetic push rod 702 is provided with a magnetic suction head 703 which is magnetically matched with the electromagnet 5, the outer end of the push rod 705 is integrally provided with an inclined plane push block 704, the frame 601 is provided with a sliding block 603 which slides relatively, namely, the frame 601 is provided with a guide groove matched with the sliding block 603 in a sliding manner, the sliding block 603 is vertical to the stretching direction of the push rod 705 along the sliding direction of the guide groove, one end of the sliding block 603 is provided with an inclined push surface which is matched with the inclined plane of the inclined plane push block 704 in a propping manner, the middle part of the sliding block 603 is provided with a clutch gear 604 which can rotate movably in a positioning manner, the other end of the sliding block 603 is integrally provided with a shaft lever 6031, the shaft lever 6031 is sleeved with a tension spring 605 for sliding reset of the sliding block 603, and the tension spring 605 is propped against the frame 601. The wire feeding assembly comprises a wire inlet sleeve 607, a wire outlet sleeve 614, a wire feeding gear 608, a wire feeding guide wheel 609 and a guide wheel bracket 610, wherein the wire inlet sleeve 607 and the wire outlet sleeve 614 are fixed on the frame 601, an inlet of the wire inlet sleeve 607 and an outlet of the wire outlet sleeve 614 are exposed relative to the frame 601, and an outlet of the wire inlet sleeve 607 is opposite to an inlet of the wire outlet sleeve 614; the wire feeding gear 608 is rotatably positioned on the frame 601, a large gear ring of the wire feeding gear 608 and the clutch gear 604 of the sliding block 603 are positioned in a meshing plane, the wire feeding guide wheel 609 is rotatably positioned on the guide wheel bracket 610, the guide wheel bracket 610 is rotatably positioned on the frame 601, a spring 611 for rotatably returning the guide wheel bracket 610 is arranged between the guide wheel bracket 610 and the frame 601, and the wire feeding guide wheel 609 is meshed with a small gear ring of the wire feeding gear 608 under the action of the spring 611 to form wire transmission between the wire feeding sleeve 607 and the wire discharging sleeve 614. The long shaft 3 connected with the remote wire feeding motor 1 is fixedly provided with a transmission gear 4 which is respectively positioned in the same meshing plane with the large gear ring of the wire feeding gear 608 in each remote wire feeding mechanism 6, when the push rod 705 of the automatic device 7 extends to the right position, the sliding block 603 slides to the clutch gear 604 to be meshed with the transmission gear 4 and the wire feeding gear 608, and the push rod 705 extending to the right position forms limit and keeps one end of the sliding block 603. The frame 601 of the remote wire feeding mechanism 6 is provided with a bearing seat, and a ball bearing 602 matched with the long shaft 3 is arranged in the bearing seat, so that the rotating stability of the long shaft 3 is improved.

As shown in fig. 8, the short-range wire feeding device 9 includes a short-range wire feeding support 901, a short-range wire feeding motor, and a short-range wire feeding assembly, where the short-range wire feeding assembly includes a wire feeding pipe 902, a wire discharging pipe 907, a feeding gear 903, a feeding guide wheel 904, and a swinging support 905, the wire feeding pipe 902 and the wire discharging pipe 907 are both fixed to the short-range wire feeding support 901, an inlet of the wire feeding pipe 902 and an outlet of the wire discharging pipe 907 are both exposed to the short-range wire feeding support 901, an outlet of the wire feeding pipe 902 is opposite to an inlet of the wire discharging pipe 907, the short-range wire feeding motor is fixed to the short-range wire feeding support 901 and is in transmission connection with the gear, the feeding gear 903 is in mesh transmission with a large gear ring of the feeding gear 903, and the feeding gear 903 rotates and is positioned on the short-range wire feeding support 901. The feeding guide wheel 904 is rotatably positioned on the swinging support 905, the swinging support 905 swings and is positioned on the short-range wire feeding support 901, a pressing spring 906 for swinging and returning the swinging support 905 is tightly abutted between the swinging support 905 and the short-range wire feeding support 901, and under the action of the pressing spring 906, the swinging support 905 drives the feeding guide wheel 904 to be meshed with a small gear ring of the feeding gear 903 to form wire transmission between the wire feeding pipe 902 and the wire discharging pipe 907.

As shown in fig. 7, the above-mentioned conduit wire feeding hub 8 is a multi-inlet single-outlet wire feeding pipe, the inlets of the conduit wire feeding hub 8 are respectively communicated with the wire outlet sleeves 614 of the remote wire feeders 6, and the outlets of the conduit wire feeding hub 8 are communicated with the wire inlet pipe 902 of the short-range wire feeder 9. By utilizing the pipeline wire feeding center 8, the long-distance wire feeding mechanism 6 can selectively feed corresponding wires into the short-range wire feeding device 9 according to the requirement, and then the short-range wire feeding device 9 feeds the wires to realize printing, thereby meeting the requirement of multi-color printing. A tapered guide hole 801 is formed in the outlet of the pipeline wire feeding center 8, so that the reliable guiding and conveying of the wire materials are facilitated.

The guide wheel bracket 610 of the wire feeding assembly and the swing bracket 905 of the proximity wire feeding assembly are integrated with a handle for manually controlling swing. Thereby facilitating manual cutting and feeding. The spring corresponding to the guide wheel bracket 610 may also be sleeved on the bolt a612, one end of the bolt a612 abuts against the guide wheel bracket 610, the other end of the bolt a612 extends out of the frame 601 and is connected with the adjusting nut a613, the spring abuts against and is limited between the abutting end of the bolt a612 and the frame 601, and the adjustment of the tension of the spring is realized by rotating the adjusting nut 613, so that the pressing force between the wire feeding guide wheel 609 of the guide wheel bracket 610 and the small gear ring of the wire feeding gear 608 is conveniently adjusted. Similarly, the pressing spring 906 corresponding to the swing bracket 905 may also be sleeved with a bolt B, one end of the bolt B abuts against the swing bracket 905, and the other end of the bolt B extends out of the short-range wire feeding bracket 901 and then is connected with an adjusting nut B, so as to conveniently adjust the tension force of the pressing spring 906, and thus adjust the extrusion force between the feeding guide wheel 904 and the small gear ring of the feeding gear 903.

In the remote wire feeding mechanism 6, the shaft 6031 of the tension spring 605 connected to the sliding block 603 is configured to extend out of the frame 601, and a limit switch 606 for limiting induction is disposed outside the frame 601 and formed on the end of the shaft 6031. The slide block 603 is induced to be in place through the limit switch 606, so that the wire feeding state of the current remote wire feeding mechanism 6 can be identified conveniently, and the zero setting operation of the equipment is facilitated when the power failure and other conditions occur.

The use process of the wire feeding device is as follows: the long shaft 3 is driven to rotate by the long-distance wire feeding motor 1, when a certain color of wire is needed, the corresponding long-distance wire feeding mechanism 6 is controlled to be started, the electromagnet 5 is electrified to attract the magnetic attraction head 703 of the magnetic attraction push rod 702 of the automatic device 7, the magnetic attraction push rod 702 pushes the rotor and the push rod 705, until the rotor is pushed to the proper position, the rotor swings and forms a lock with the inner wall of the housing 701 after rotating, at the moment, the push rod 705 drives the inclined plane push block 704 to extend out to the proper position, the inclined plane push block 704 pushes the inclined push surface of the slide block 603 and drives the slide block 603 to slide to the proper position, the clutch gear 604 of the slide block 603 is meshed with the transmission gear 4 of the long shaft 3 and the large gear ring of the wire feeding gear 608, the wire feeding gear 608 drives the wire to be fed by the wire feeding sleeve 607 along the wire feeding sleeve 614 under the extrusion action of the wire feeding guide wheel 609, and then enters the wire feeding pipe 902 of the short-distance wire feeding device 9, at the large gear ring of the feeding gear 903 is driven by the short-distance wire feeding motor to rotate, and the small gear ring of the feeding gear 903 drives the wire to be extruded by the wire feeding sleeve 904 for printing and used for discharging guide wheel 907. When the wires need to be replaced, the remote wire feeding motor 1 and the short-range wire feeding motor are controlled to rotate reversely until the wires return to an inlet of the pipeline wire feeding center 8, the electromagnet 5 is controlled to be electrified to attract the magnetic suction head 703 of the magnetic suction push rod 702, the magnetic suction push rod 702 pushes the rotor and the ejector rod 705, and when the wires are pushed to the right position, the rotor swings and rotates again to release locking with the inner wall of the housing 701, and the rotor resets along with the action of a reset spring 706 of the ejector rod 705, namely, the inclined push block 704 of the ejector rod 705 resets to release limiting of the sliding block, the sliding block 603 resets under the action of a spring, and the clutch gear 604 is released from being meshed with the transmission gear 4 and the wire feeding gear 608. At this time, another remote wire feeding mechanism 6 is started to work in the same manner as described above, so that wire feeding operation of different wires can be realized.

Besides the above structure, the electromagnet 5 and the automatic device 7 of the clutch assembly in the wire feeding device can also be directly replaced by an electromagnetic push rod, the electromagnetic push rod is fixed on the frame 601, and the push rod end of the electromagnetic push rod is provided with the above inclined push block 704, so that the same functional purpose can be achieved.

The above description is intended to illustrate the technical means of the present invention, and not to limit the technical scope of the present invention. Obvious modifications or alterations to the present invention in combination with the prior art knowledge will be apparent to those skilled in the art and fall within the scope of the appended claims.

Claims

1. A3D printer multicolor wire feeding device comprises a remote wire feeding device, and is characterized in that the remote wire feeding device comprises a remote wire feeding motor (1), a remote wire feeding support (2) and a remote wire feeding mechanism (6), wherein the remote wire feeding motor (1) is fixed on the remote wire feeding support (2) and is in transmission connection with a long shaft (3), a row of remote wire feeding mechanisms (6) fixed on the remote wire feeding support (2) are axially arranged along the long shaft (3), the remote wire feeding mechanism (6) comprises a rack (601), a clutch assembly and a wire feeding assembly, the rack is fixed on the remote wire feeding support (2), the clutch assembly comprises an electromagnetic push rod and a clutch gear (604), the electromagnetic push rod is fixed on the rack (601), an inclined plane push block (704) is arranged at the push rod end of the electromagnetic push rod, the clutch gear (604) is rotatably positioned on a sliding block (603), the sliding block (603) slides relative to the rack (601), the sliding direction is perpendicular to the pushing direction of the electromagnetic push rod, an inclined plane is arranged at one end of the sliding block (603), and is matched with the inclined plane of the electromagnetic push block (704), and a tension return spring (605) for sliding of the sliding block (603) is arranged between the other end of the rack (601); the wire feeding assembly comprises a wire feeding sleeve (607), a wire discharging sleeve (614), a wire feeding gear (608), a wire feeding guide wheel (609) and a guide wheel support (610), wherein the wire feeding sleeve (607) and the wire discharging sleeve (614) are fixed on the machine frame (601), an inlet of the wire feeding sleeve (607) and an outlet of the wire discharging sleeve (614) are exposed relative to the machine frame (601), an outlet of the wire feeding sleeve (607) is opposite to an inlet of the wire discharging sleeve (614), the wire feeding gear (608) is rotationally positioned on the machine frame (601), the wire feeding gear (608) and a clutch gear (604) of the sliding block (603) are positioned in a meshing plane, the wire feeding guide wheel (609) is rotationally positioned on the guide wheel support (610), the guide wheel support (610) is rotationally positioned on the machine frame (601), a spring (611) for rotationally returning of the guide wheel support (610) is arranged between the guide wheel support (610) and the machine frame (601), and the guide wheel (609) is meshed with the wire feeding gear (608) under the action of the spring (611) to form a transmission for the wire feeding sleeve (607) and the wire discharging sleeve (614); the long shaft (3) connected with the remote wire feeding motor (1) is fixedly provided with a transmission gear (4) which is respectively positioned in a meshing plane with a wire feeding gear (608) in each remote wire feeding mechanism (6), when the electromagnetic push rod pushes the inclined plane push block to be in place, the sliding block (603) slides to the clutch gear (604) to be meshed with the transmission gear (4) and the wire feeding gear (608), and when the inclined plane push block is pushed to be in place, one end of an inclined push surface of the sliding block (603) is limited and kept.

2. The 3D printer multicolor wire feeder according to claim 1, characterized in that the device further comprises a proximity wire feeder (9) and a pipeline wire feeding hub (8), the proximity wire feeder (9) comprises a proximity wire feeding support (901), a proximity wire feeding motor and a proximity wire feeding assembly, the proximity wire feeding assembly comprises a wire feeding pipe (902), a wire discharging pipe (907), a feeding gear (903), a feeding guide wheel (904) and a swinging support (905), the wire feeding pipe (902) and the wire discharging pipe (907) are fixed on the proximity wire feeding support (901), an inlet of the wire feeding pipe (902) and an outlet of the wire discharging pipe (907) are exposed relative to the proximity wire feeding support (901), the outlet of the wire inlet pipe (902) is opposite to the inlet of the wire outlet pipe (907), the short-range wire feeding motor is fixed on the short-range wire feeding support (901) and is in transmission connection with the feeding gear (903), the feeding guide wheel (904) is rotationally positioned on the swinging support (905), the swinging support (905) is swung and positioned on the short-range wire feeding support (901), a pressing spring (906) for swinging and resetting the swinging support (905) is tightly propped between the swinging support (905) and the short-range wire feeding support (901), and under the action of the pressing spring (906), the swinging support (905) drives the feeding guide wheel (904) to be meshed with the feeding gear (903) to form a wire material between the wire inlet pipe (902) and the wire outlet pipe (907) Transmission; the pipeline wire feeding center (8) is a wire feeding pipe fitting with multiple inlets and single outlet, the inlet of the pipeline wire feeding center (8) is respectively communicated with the wire outlet sleeve (614) of each remote wire feeding mechanism (6), and the outlet of the pipeline wire feeding center (8) is communicated with the wire inlet pipe (902) of the short-range wire feeding device (9).

3. The 3D printer multicolor wire feeder of claim 2, characterized in that the guide wheel bracket (610) of the wire feed assembly and the swing bracket (905) of the proximity wire feed assembly are each integrated with a handle for manually controlling swing.

4. The 3D printer multicolor wire feeding device according to claim 3, characterized in that a spring corresponding to the guide wheel support (610) is sleeved on a bolt A (612), one end of the bolt A (612) abuts against the guide wheel support (610), the other end of the bolt A (612) extends out of the frame (601) and then is connected with an adjusting nut A (613), and the spring abuts against and is limited between the abutting end of the bolt A (612) and the frame (601).

5. The 3D printer multicolor wire feeding device according to claim 3, characterized in that a compression spring (906) corresponding to the swing support (905) is sleeved on a bolt B, one end of the bolt B abuts against the swing support (905), the other end of the bolt B extends out of the short-range wire feeding support (901) and then is connected with an adjusting nut B (613), and the compression spring (906) abuts against and is limited between the abutting end of the bolt B and the short-range wire feeding support (901).

6. The 3D printer multicolor wire feeder according to claim 2, characterized in that a tapered guide hole (801) is formed in the outlet of the conduit wire feed hub (8).

7. The 3D printer multicolor wire feeding device according to claim 1, characterized in that one end of the sliding block (603) connected with the tension spring (605) is a shaft rod (6031) sleeved with the tension spring (605), the shaft rod (6031) extends out of the frame (601), and a limit switch (606) for limiting induction is arranged outside the frame (601) for the end of the shaft rod (6031) extending out of the sliding block (603).

8. The 3D printer multicolor wire feeder according to claim 1, characterized in that the frame (601) of the remote wire feeder (6) is provided with a bearing housing in which a ball bearing (602) is provided that cooperates with the long shaft (3).

9. A working method of a 3D printer multi-color wire feeder according to claim 2, characterized in that the long shaft (3) is driven to rotate by the long-range wire feeding motor (1), when a specified color of silk material is required, the clutch component of the corresponding long-range wire feeder (6) is controlled to make the clutch gear (604) engage with the transmission gear (4) and the wire feeding gear (608), the wire feeding gear (608) and the wire feeding guide wheel (609) realize the transmission of the silk material from the wire feeding sleeve (607) to the wire discharging sleeve (614) and enter along the inlet of the pipeline wire feeding hub (8), the silk material is guided into the wire feeding pipe (902) of the short-range wire feeder (9) from the outlet of the pipeline wire feeding hub, the short-range wire feeder (9) motor drives the wire feeding gear (903) to rotate, the feeding gear (903) and the feeding guide wheel (904) realize the transmission of the silk material from the wire feeding pipe (902) to the wire discharging pipe (907), and the long-range wire feeder (6) and the short-range wire feeder (9) realize the synchronous wire feeding operation for the final printing nozzle; when the wires with different colors need to be replaced, the remote wire feeding motor (1) and the short-range wire feeding motor are reversely controlled to rotate until the original printed wires return to the inlet of the pipeline wire feeding center (8), and at the moment, the remote wire feeding mechanism (6) of another wire with the required color is started to work, so that the wires are conveyed in the same way, and the multi-color printing is realized.