Continuous rotary printing head suitable for fuse wire forming and use method of continuous rotary printing head

Abstract

The invention relates to the technical field of additive manufacturing, in particular to a continuous rotating printing head suitable for fuse wire forming and a using method thereof.The continuous rotating printing head comprises a wire outlet rotating drive, a wire outlet rotating transmission mechanism, a wire outlet rotating execution mechanism, a wire feeding drive and a wire feeding melt extrusion mechanism, and the output end of the wire outlet rotating drive is connected with the wire outlet rotating transmission mechanism; the wire discharging rotation transmission mechanism is connected with the wire discharging rotation executing mechanism, the wire discharging rotation executing mechanism is used for discharging wires in a rotating mode, the output end of the wire feeding drive mechanism is connected with the wire feeding melting extrusion mechanism, and a heating melting assembly is arranged at one end of the wire feeding melting extrusion mechanism and penetrates into the wire discharging rotation executing mechanism. The wire feeding melt extrusion mechanism heats wires in an inner static mode, the wire discharging rotary execution mechanism rotates to extrude high-temperature wires outside, and through the cooperative structural design of dynamic and static combination of the wire feeding melt extrusion mechanism and the wire discharging rotary execution mechanism, the wire feeding failure problem caused by continuous rotary wire discharging is solved, the heater failure difficulty caused by continuous rotary heating is avoided, and continuous long-time rotary wire discharging is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of additive manufacturing, and in particular to a continuous rotating print head suitable for filament molding and a method of using the same. Background Art

[0002] Fused Filament Fabrication (FFF) is a typical additive manufacturing technology. Insufficient interlayer bonding is one of the key issues that restrict the widespread application of this technology. By introducing a rotating shear field through the rotating filament of the print head, the anisotropy of mechanical properties caused by insufficient interlayer bonding of the formed part can be improved, thereby improving the printing quality. However, the rotary melt extrusion method poses new challenges to the print head. Currently, the print head and heater rotate together as a whole, and the following problems need to be solved urgently:

[0003] 1. Wire feeding failure caused by continuous rotation of the wire: the continuous rotation of the print head causes the wire to twist, deform, or even break, which causes friction transmission wire feeding failure.

[0004] 2. Heater failure caused by continuous rotation heating: The heater cable is seriously entangled and damaged due to the continuous rotation of the print head, which causes power interruption. Conductive slip rings can solve the problem of continuous rotation and winding of cables, but their structure is complex and easily disturbed and worn. They need to be cleaned or replaced regularly, and have high requirements for the use environment. It is difficult to meet the industrial application requirements of fuse forming equipment for long-term, stable and low maintenance.

[0005] 3. The integration problem of wire feeding structure and melt extrusion structure under continuous rotation conditions: that is, how to achieve an integrated design of wire feeding and melt extrusion under continuous rotation conditions, while facilitating disassembly and maintenance, so as to meet the industrial application requirements of highly integrated fused wire forming equipment. Summary of the invention

[0006] In order to solve the above technical problems, the present invention provides a continuously rotating print head suitable for filament molding and a method of using the same, which can realize continuous long-term rotation of filaments and the integrated integration of wire feeding and melt extrusion under continuous rotation conditions, and can avoid the difficulty of heater failure caused by continuous rotation heating.

[0007] The present invention is achieved through the following technical solutions:

[0008] A continuous rotating print head suitable for fused wire forming comprises a wire output rotary drive, a wire output rotary transmission mechanism, a wire output rotary actuator, a wire feeding drive and a wire feeding melting extrusion mechanism. The output end of the wire output rotary drive is connected to the wire output rotary transmission mechanism, the wire output rotary transmission mechanism is connected to the wire output rotary actuator, the wire output rotary actuator is used for rotating the wire output, the output end of the wire feeding drive is connected to the wire feeding melting extrusion mechanism, one end of the wire feeding melting extrusion mechanism is provided with a heating and melting component, the heating and melting component penetrates into the wire output rotary actuator, and the wire feeding melting extrusion mechanism is used for feeding wire into the wire output rotary actuator and heating and melting the wire.

[0009] Through the above technical solution, the wire-extracting rotary drive provides power for rotating the wire, and the wire-extracting rotary transmission mechanism transmits the power to the wire-extracting rotary actuator to make it rotate continuously; the wire-feeding drive provides power for the wire to enter the wire-feeding melt extrusion mechanism, and the wire is heated by the wire-feeding melt extrusion mechanism and then fed into the wire-extracting rotary actuator, and then the wire-extracting rotary actuator continuously rotates to extrude the high-temperature wire;

[0010] When in working state, the wire feeding melting extrusion mechanism continuously vertically feeds the high-temperature wire material heated and melted by the heating and melting component at the end into the wire output rotating actuator, the wire feeding melting extrusion mechanism is in a stationary state inside the wire output rotating actuator, and the wire output rotating actuator continuously rotates outside it to output wire.

[0011] Further preferably, the wire-out rotating actuator includes a rotating guide block, a hollow flange shaft, a rotating nozzle seat and a rotating nozzle, the wire-out rotating transmission mechanism is connected to the hollow flange shaft, the rotating guide block is sleeved on the top outer wall of the hollow flange shaft, the bottom of the hollow flange shaft is detachably connected to the rotating nozzle seat, and the rotating nozzle is installed at the bottom of the rotating nozzle seat.

[0012] Through the above technical scheme, the hollow flange shaft drives the rotating nozzle seat and the rotating nozzle to rotate around the axis of the nozzle wire outlet hole under the action of the wire outlet rotating transmission mechanism. After the high-temperature wire heated by the wire feeding melt extrusion mechanism enters the rotating nozzle, it is extruded while rotating.

[0013] Further preferably, the side wall of the hollow flange shaft is provided with a plurality of exhaust holes.

[0014] Further preferably, the wire feeding melt extrusion mechanism also includes a wire feeding active wheel, a wire feeding driven wheel, a spring seat, a wire feeding drive fixed seat, a sealing seat, a wire feeding guide flange and a wire feeding linear guide block, the output end of the wire feeding drive is connected to the wire feeding active wheel, the wire feeding active wheel and the wire feeding driven wheel are both installed in the spring seat, the spring seat is installed and connected to the wire feeding drive, the wire feeding drive is installed and connected to the wire feeding drive fixed seat, the top of the wire feeding guide flange is connected to the middle of the sealing seat, the wire feeding linear guide block is arranged on the lower side of the wire feeding drive fixed seat, and the wire feeding guide flange is sleeved in the wire feeding linear guide block.

[0015] Through the above technical scheme, the wire feeding driven wheel clamps the wire together with the wire feeding driving wheel under the elastic compression of the spring seat, and the wire feeding driving wheel actively rotates with the wire feeding drive to drive the wire into the wire feeding guide flange.

[0016] Further preferably, the wire feeding melting extrusion mechanism also includes a throat, which is connected to the bottom end of the wire feeding guide flange, a heat dissipation fin is provided outside the middle of the throat, and a heating and melting component is arranged at the bottom of the throat.

[0017] Further preferably, the heating and melting assembly includes a heating block, a heating element, a temperature sensor and a melting nozzle, the heating block is sleeved on the bottom of the throat and outside the melting nozzle, and the heating element and the temperature sensor are arranged inside the heating block.

[0018] Through the above technical solution, the wire enters the throat through the wire feeding guide flange, the heating block melts the wire under the action of the heating element, and is sent from the melting nozzle to the rotating nozzle for rotation and extrusion.

[0019] Further preferably, there is at least one heating element and at least one temperature sensor respectively.

[0020] The rotating nozzle in the wire-extruding rotating actuator is in contact and sealed with the melting nozzle in the wire-feeding melting extrusion mechanism.

[0021] Further preferably, the print head also includes an upper base and a lower base, a column is provided between the upper base and the lower base, the wire output rotation drive and wire feeding drive fixing seats are installed on the upper base, the sealing seat is detachably connected to the upper base, the wire feeding linear guide block and the throat of the wire feeding melt extrusion mechanism are installed in the upper base and the lower base, and the rotating guide block of the wire output rotation actuator is connected to the lower base.

[0022] A method for using a continuous rotating print head suitable for fuse forming, the method of use is as follows

[0023] 1) The wire is placed between the wire feeding driving wheel and the wire feeding driven wheel. The wire feeding driving wheel rotates actively with the wire feeding drive, driving the wire to enter the heating and melting assembly after passing through the wire feeding guide flange and the throat;

[0024] 2) The heating and melting component is stationary and heats the wire, and the high-temperature wire is extruded from the melting nozzle of the heating and melting component;

[0025] 3) The wire-exiting rotating transmission mechanism drives the hollow flange shaft to rotate, and the hollow flange shaft drives the rotating nozzle to rotate. The high-temperature wire enters the rotating nozzle through the melting nozzle and is extruded as it rotates.

[0026] Beneficial effects of the present invention:

[0027] 1) The present invention is a continuous rotating print head suitable for filament molding, in which a wire feeding melting extrusion mechanism is stationary inside to heat the wire material, and a wire output rotating actuator is externally rotating to extrude the high-temperature wire material. The coordinated structural design of the two combining static and dynamic operations not only solves the problem of wire feeding failure caused by continuous rotating wire output, but also avoids the difficulty of heater failure caused by continuous rotating heating, thereby realizing continuous and long-term rotating wire output.

[0028] 2) The wire feeding melt extrusion mechanism of the present invention realizes the integrated integration of wire feeding and melt extrusion under continuous rotation conditions. The introduction of the wire feeding guide flange and the wire feeding linear guide block also ensures the rapid disassembly and assembly of the structure. The design of the detachable rotating nozzle seat in the wire output rotating actuator not only ensures the rapid replacement of the rotating nozzle, but also realizes the disassembly-free maintenance of the wire feeding melt extrusion mechanism, which fully responds to the industrial application needs of highly integrated fused wire forming equipment.

[0029] 3) The print head of the present invention is applicable to a wide range of wire materials, including polymers and their composite materials, metals and their composite materials, polymer and metal composite materials, etc.

[0030] The specific implementation modes of the present invention will be further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0032] Figure 1 The present invention is a schematic cross-sectional structural diagram of a continuous rotating print head suitable for fuse forming.

[0033] Figure 2 The present invention is a schematic cross-sectional structural diagram of a filament-exiting rotary actuator in a continuous rotary print head suitable for fuse molding.

[0034] Figure 3 The present invention is a schematic cross-sectional structural diagram of a wire feeding and melting extrusion mechanism in a continuous rotating print head suitable for fuse forming.

[0035] 1-wire output rotary drive, 2-wire output rotary transmission mechanism, 3-wire output rotary actuator, 31-rotating guide block, 32-hollow flange shaft, 33-rotating nozzle seat, 34-rotating nozzle, 4-wire feeding drive, 5-wire feeding melting extrusion mechanism, 51-wire feeding active wheel, 52-wire feeding driven wheel, 53-spring seat, 54-wire feeding drive fixed seat, 55-sealing seat, 56-wire feeding guide flange, 57-wire feeding linear guide block, 58-throat, 59-heating fin, 510-heating element, 511-temperature sensor, 512-heating block, 513-melting nozzle, 6-upper base, 7-lower base, 8-column, 9-wire material. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0040] Please refer to Figures 1 to 3 The present invention is a continuous rotating print head suitable for fused wire forming, which is mainly composed of a wire output rotary drive 1, a wire output rotary transmission mechanism 2, a wire output rotary actuator 3, a wire feeding drive 4, a wire feeding melt extrusion mechanism 5, an upper base 6, a lower base 7 and a column 8. In this embodiment, the upper base 6 and the lower base 7 are fixed by the column 8 to form a support and installation platform for the entire print head. The wire output rotary drive 1 is fixed to the upper base 6, the wire output rotary transmission mechanism 2 is located between the upper base 6 and the lower base 7, the output end of the wire output rotary drive 1 is connected to the wire output rotary transmission mechanism 2, and the top end of the wire output rotary actuator 3 has a static end fixed to the lower base The wire-feeding rotary actuator 3 rotates to feed the wire as the moving end, the wire-feeding rotary transmission mechanism 2 is connected to the moving end of the wire-feeding rotary actuator 3, and the wire-feeding rotary transmission mechanism 2 connects the wire-feeding rotary drive 1 and the moving end of the wire-feeding rotary actuator 3 for transmitting power; the wire-feeding drive 4 is fixed to the upper base 6, and the output end of the wire-feeding drive 4 is connected to the wire-feeding melting extrusion mechanism 5; the wire-feeding melting extrusion mechanism 5 passes through the upper base 6 and the lower base 7, and the bottom of the wire-feeding melting extrusion mechanism 5 is a heating and melting component, which is located inside the wire-feeding rotary actuator 3, and the wire-feeding rotary actuator 3 has a cavity into which the wire-feeding melting extrusion mechanism 5 penetrates.

[0041] The wire-out rotary drive 1 provides power for rotating the wire, and the wire-out rotary transmission mechanism 2 transmits the power to the wire-out rotary actuator 3, causing it to rotate continuously; the wire feeding drive 4 provides power for the wire 9 to enter the wire feeding melt extrusion mechanism 5, and the wire 9 enters the wire feeding melt extrusion mechanism 5 and is heated and then fed into the wire-out rotary actuator 3, and then the wire-out rotary actuator 3 continuously rotates to extrude the high-temperature wire.

[0042] like Figure 2As shown, the wire-extracting rotary actuator 3 is composed of a rotary guide block 31, a hollow flange shaft 32, a rotary nozzle seat 33 and a rotary nozzle 34. The outer wall of the rotary guide block 31 is fixed to the lower base 7, and the inner wall of the rotary guide block 31 is connected to the hollow flange shaft 32; the upper end surface of the hollow flange shaft 32 is fixed to the wire-extracting rotary transmission mechanism 2, and the lower outer wall of the hollow flange shaft 32 is in contact with the upper inner wall of the rotary nozzle seat 33. Preferably, the bottom of the hollow flange shaft 32 and the top of the rotary nozzle seat 33 are detachably connected, such as threaded connection, snap connection, etc., and the rotary nozzle 34 is fixed to the bottom of the rotary nozzle seat 33. When in use, the hollow flange shaft 32 drives the rotary nozzle seat 33 and the rotary nozzle 34 to rotate around the axis of the nozzle wire outlet hole under the action of the wire-extracting rotary transmission mechanism 2, and the high-temperature wire 9 heated by the wire feeding melt extrusion mechanism 5 enters the rotary nozzle 34 and is extruded while rotating.

[0043] like Figure 3 As shown, the wire feeding melting extrusion mechanism 5 includes a wire feeding active wheel 51, a wire feeding driven wheel 52, a spring seat 53, a wire feeding drive fixing seat 54, a sealing seat 55, a wire feeding guide flange 56, a wire feeding linear guide block 57, a throat 58, a heat dissipation fin 59, a heating element 510, a temperature sensor 511, a heating block 512 and a melting nozzle 513. The wire feeding driving wheel 51 is connected to the wire feeding drive 4, and the wire feeding drive 4 is installed on the upper base 6 through the wire feeding drive fixing seat 54. The spring seat 53 is connected to the wire feeding drive 4. The wire feeding driven wheel 52 and the wire feeding driving wheel 51 are both arranged in the spring seat 53. The side of the wire feeding driven wheel 52 away from the wire feeding driving wheel 51 is in contact with the spring seat 53. The wire 9 is transported downward between the wire feeding driving wheel 51 and the wire feeding driven wheel 52. Under the elastic compression action of the spring seat 53, the wire feeding driven wheel 52 clamps the wire 9 together with the wire feeding driving wheel 51. The wire feeding driving wheel 51 actively rotates with the wire feeding drive 4, driving the wire 9 to enter the wire feeding guide flange 56.

[0044] The two ends of the sealing seat 55 are detachably connected to the upper base 6, the top of the wire feeding linear guide block 57 is detachably connected to the upper base 6, the wire feeding guide flange 56 is inside the wire feeding linear guide block 57, the wire 9 can slide linearly up and down along the axis of the wire feeding guide flange 56, the top surface of the wire feeding guide flange 56 passes through the wire feeding linear guide block 57 and is connected to the middle of the sealing seat 55, the lower side of the wire feeding guide flange 56 passes through the wire feeding linear guide block 57 to connect to the throat 58, the middle of the throat 58 is equipped with a heat dissipation fin 59, and the lower part is connected to the heating block 512, and the heating element 510 and the temperature sensor are installed in the heating block 512 511; the heating block 512, the heating element 510, the temperature sensor 511 and the melting nozzle 513 constitute a heating and melting assembly; the sealing seat 55, the wire feeding guide flange 56, the throat 58 and the melting nozzle 513 respectively have holes for the wire 9 to pass through, and the positions of their holes correspond, that is, their holes are connected, and at the same time, the outlet positions of the melting nozzle 513 and the rotating nozzle 34 correspond, the wire 9 enters the throat 58 through the wire feeding guide flange 56, and the heating block 512 melts the wire 9 under the action of the heating element 510, and is extruded from the melting nozzle 513 to the rotating nozzle 34.

[0045] The implementation forms of the wire-extracting rotary drive 1 and the wire-feeding drive 4 include motor drive, hydraulic drive or pneumatic drive. The implementation forms of the wire-extracting rotary transmission mechanism 2 include synchronous belt drive, gear drive, belt drive, chain drive or friction drive. The implementation forms of the rotating guide block 31 include rotating bearings or oil-free bushings. The side wall of the hollow flange shaft 32 has a single group or multiple groups of exhaust holes for convection heat dissipation of the wire-feeding melt extrusion mechanism. The implementation forms of the wire-feeding linear guide block 57 include linear bearings or oil-free bushings. The heating element 510 and the temperature sensor 511 can be used individually or in multiple groups at the same time. The connection surface of the wire-extracting rotary actuator 3 and the wire-feeding melt extrusion mechanism 5 has a sealing function, that is, the sealing seat 55 is connected to the upper base 6, and the inner surface of the rotating nozzle 34 and the outer surface of the melting nozzle 513 are pressed down to lock the molten wire 9 to prevent leakage and overflow during rotation.

[0046] The wire material 9 applicable to the continuous rotating print head includes polymers and composite materials thereof, metals and composite materials thereof, or metal and polymer composite materials. When the wire material 9 is polylactic acid (PLA) or acrylonitrile-butadiene-styrene copolymer (ABS), the wire output rotation drive 1 and the wire feeding drive 4 can be stepper motors, the wire output rotation transmission mechanism 2 can be gear transmission, the rotating guide block 31 adopts a deep groove ball bearing, the wire feeding linear guide block 57 adopts an oil-free bushing, and the side wall of the hollow flange rotating shaft 32 is symmetrically distributed with four groups of exhaust holes for convection heat dissipation of the wire feeding melt extrusion mechanism 5, and two groups of heating elements 510 and temperature sensors 511 are used, which are symmetrically installed in the heating block 512.

[0047] When working, the wire feeding melt extrusion mechanism 5 is relatively static inside the wire outlet rotary actuator 3, and the wire outlet rotary actuator 3 continuously rotates outside the mechanism to outlet wire. Specifically, the hollow flange shaft 32 drives the rotating nozzle seat 33 and the rotating nozzle 34 to rotate around the axis of the nozzle outlet hole under the action of the wire outlet rotary transmission mechanism 2, and the wire feeding melt extrusion mechanism 5 heats the high-temperature wire 9 and enters the rotating nozzle 34, and then extrude the wire while rotating.

[0048] The present invention discloses a continuous rotating print head suitable for fuse molding, which is composed of a wire feeding rotary drive 1, a wire feeding rotary transmission mechanism 2, a wire feeding rotary actuator 3, a wire feeding drive 4, a wire feeding melt extrusion mechanism 5, an upper base 6, a lower base 7 and a column 8. The wire feeding melt extrusion mechanism 5 heats the wire 9 statically inside, and the wire feeding rotary actuator 3 rotates and extrude the high-temperature wire 9 outside. The coordinated design of the two combined with dynamic and static can solve the problems of wire feeding failure caused by continuous rotary wire feeding and heater failure caused by continuous rotary heating in fuse molding, and realize continuous long-term rotary wire feeding. In addition, the wire feeding melt extrusion mechanism 5 realizes the integrated integration of wire feeding and melt extrusion under continuous rotation conditions, and fully responds to the industrial application requirements of highly integrated fuse molding equipment through the detachable design of the wire feeding melt extrusion mechanism 5 and the disassembly-free maintenance design of the wire feeding rotary actuator 3. The continuous rotating print head is suitable for various types of fuse molding wires 9, including polymers and their composite materials, metals and their composite materials, metal and polymer composite materials, etc.

[0049] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A continuous rotating print head suitable for fuse forming, characterized in that: The invention comprises a wire-extruding rotary drive (1), a wire-extruding rotary transmission mechanism (2), a wire-extruding rotary actuator (3), a wire-feeding drive (4) and a wire-feeding melting extrusion mechanism (5), wherein the output end of the wire-extruding rotary drive (1) is connected to the wire-extruding rotary transmission mechanism (2), the wire-extruding rotary transmission mechanism (2) is connected to the wire-extruding rotary actuator (3), the wire-extruding rotary actuator (3) is used for rotating the wire, the output end of the wire-feeding drive (4) is connected to the wire-feeding melting extrusion mechanism (5), one end of the wire-feeding melting extrusion mechanism (5) is provided with a heating and melting component, the heating and melting component penetrates into the wire-extruding rotary actuator (3), and the wire-feeding melting extrusion mechanism (5) is used for feeding a wire material (9) into the wire-extruding rotary actuator (3) and heating and melting the wire material (9).

2. A continuous rotating print head suitable for fuse forming according to claim 1, characterized in that: The wire-extracting rotary actuator (3) comprises a rotary guide block (31), a hollow flange rotating shaft (32), a rotary nozzle seat (33) and a rotary nozzle (34); the wire-extracting rotary transmission mechanism (2) is connected to the hollow flange rotating shaft (32); the rotary guide block (31) is sleeved on the top outer wall of the hollow flange rotating shaft (32); the bottom of the hollow flange rotating shaft (32) is detachably connected to the rotary nozzle seat (33); and the rotary nozzle (34) is mounted on the bottom of the rotary nozzle seat (33).

3. A continuous rotating print head suitable for fuse forming according to claim 2, characterized in that: The side wall of the hollow flange rotating shaft (32) is provided with a plurality of exhaust holes.

4. A continuous rotating print head suitable for fuse forming according to claim 2, characterized in that: The wire feeding melt extrusion mechanism (5) further comprises a wire feeding driving wheel (51), a wire feeding driven wheel (52), a spring seat (53), a wire feeding drive fixed seat (54), a sealing seat (55), a wire feeding guide flange (56) and a wire feeding linear guide block (57); the output end of the wire feeding drive (4) is connected to the wire feeding driving wheel (51); the wire feeding driving wheel (51) and the wire feeding driven wheel (52) are both installed in the spring seat (53); the top end of the wire feeding guide flange (56) is connected to the middle part of the sealing seat (55); the wire feeding linear guide block (57) is arranged on the lower side of the wire feeding drive fixed seat (54); and the wire feeding guide flange (56) is sleeved in the wire feeding linear guide block (57).

5. A continuous rotating print head suitable for fuse forming according to claim 4, characterized in that: The wire feeding melting extrusion mechanism (5) also includes a throat (58), which is connected to the bottom end of the wire feeding guide flange (56), a heat dissipation fin (59) is arranged outside the middle of the throat (58), and a heating and melting component is arranged at the bottom of the throat (58).

6. A continuously rotating print head suitable for fuse forming according to claim 5, characterized in that: The heating and melting component comprises a heating block (512), a heating element (510), a temperature sensor (511) and a melting nozzle (513); the heating block (512) is sleeved on the bottom of the throat (58) and outside the melting nozzle (513); the heating element (510) and the temperature sensor (511) are arranged inside the heating block (512).

7. A continuous rotating print head suitable for fuse forming according to claim 6, characterized in that: The heating element (510) and the temperature sensor (511) are each provided with at least one.

8. A continuous rotating print head suitable for fuse forming according to claim 6, characterized in that: The rotating nozzle (34) in the wire-extruding rotating actuator (3) is in contact and sealed with the melting nozzle (513) in the wire-feeding melting extrusion mechanism (5).

9. A continuous rotating print head suitable for fuse forming according to claim 5, characterized in that: The print head also includes an upper base (6) and a lower base (7), a column (8) is provided between the upper base (6) and the lower base (7), the wire output rotary drive (1) and the wire feeding drive fixed seat (54) are installed on the upper base (6), the sealing seat (55) is detachably connected to the upper base (6), the wire feeding linear guide block (57) and the throat (58) of the wire feeding melt extrusion mechanism (5) are installed in the upper base (6) and the lower base (7), and the rotary guide block (31) of the wire output rotary actuator (3) is connected to the lower base (7).

10. A method for using a continuous rotating print head suitable for fuse forming, characterized in that: Here’s how to use it: 1) The wire (9) is placed between the wire feeding driving wheel (51) and the wire feeding driven wheel (52), and the wire feeding driving wheel (51) actively rotates along with the wire feeding drive (4), driving the wire (9) to enter the heating and melting component after passing through the wire feeding guide flange (56) and the throat (58); 2) the heating and melting component is stationary and heats the wire (9), and the high-temperature wire (9) is extruded from the melting nozzle (513) of the heating and melting component; 3) The wire-extracting rotating transmission mechanism (2) drives the hollow flange rotating shaft (32) to rotate, and the hollow flange rotating shaft (32) drives the rotating nozzle (34) to rotate, and the high-temperature wire material enters the rotating nozzle (34) through the melting nozzle (513) and is extruded as it rotates.

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