3D printer

Abstract

The utility model discloses a 3D printer. The 3D printer comprises a first guide rail, a second guide rail, a third guide rail, a mounting seat and a nozzle, the third guide rail and the second guide rail extend in parallel, and the second guide rail and the third guide rail are driven to move along a first direction; the mounting base comprises a first mounting base slidably connected to the second guide rail and a second mounting base slidably connected to the third guide rail, and the mounting base can move in the second direction; the nozzles comprise a first nozzle detachably connected with the first mounting seat and a second nozzle detachably connected with the second mounting seat; the first nozzle can be separated from the first mounting seat and connected with the second mounting seat, and the second nozzle can be separated from the second mounting seat and connected with the first mounting seat, so that the first nozzle is exchanged from the second guide rail to the third guide rail, and the second nozzle is exchanged from the third guide rail to the second guide rail. According to the 3D printer, the printing areas of the two spray heads can be overlapped, and meanwhile the two spray heads can independently execute printing work.

Description

Technical Field

[0001] The utility model relates to additive manufacturing technology, in particular to a 3D printer. Background Art

[0002] The emergence of 3D printing technology has brought earth-shaking changes to the manufacturing industry. 3D printing technology constructs three-dimensional entities by layer-by-layer heating and melting of solid materials, greatly shortening the production cycle. 3D printing technology can also achieve customized production of parts with complex structures to meet the diverse needs of consumers.

[0003] In the prior art, some 3D printers adopt a dual-nozzle structure to improve printing efficiency. However, each nozzle has a fixed printing area, and the printing areas of the two nozzles do not overlap. If the printing areas overlap, it will cause interference between the movements of the two nozzles, resulting in machine failure or printing failure. Therefore, the improvement of the printing efficiency of this kind of 3D printer is limited. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a 3D printer, which can make the printing areas of two nozzles overlap, and at the same time, the two nozzles can still independently perform printing work.

[0005] The 3D printer according to the first aspect embodiment of the utility model includes:

[0006] A first guide rail extending along a first direction;

[0007] A second guide rail extending along a second direction, the second guide rail being driven to be movable relative to the first guide rail along the first direction, the second direction intersecting the first direction;

[0008] A third guide rail extending in parallel with the second guide rail, the third guide rail being driven to be movable relative to the first guide rail along the first direction;

[0009] A mounting seat, the mounting seat including a first mounting seat slidably connected to the second guide rail and a second mounting seat slidably connected to the third guide rail, the mounting seat being movable along the second direction;

[0010] A nozzle, the nozzle including a first nozzle detachably connected to the first mounting seat and a second nozzle detachably connected to the second mounting seat;

[0011] Wherein, the first nozzle can be separated from the first mounting seat and connected to the second mounting seat, and the second nozzle can be separated from the second mounting seat and connected to the first mounting seat, so that the first nozzle is exchanged from the second guide rail to the third guide rail, and the second nozzle is exchanged from the third guide rail to the second guide rail.

[0012] The 3D printer according to the embodiment of the present invention has at least the following beneficial effects:

[0013] Since the 3D printer of the present application can realize the exchange of nozzles on the second guide rail and the third guide rail during the working process, changing the working areas of the first nozzle and the second nozzle, so that the printing areas of the first nozzle and the second nozzle overlap. After the exchange, the two nozzles can still independently perform printing work, and the working range of a single nozzle is greatly improved. Furthermore, it can process larger or more complex model manufacturing, thereby improving the performance and practical value of the 3D printer.

[0014] According to some embodiments of the present invention, two first mounting seats are provided on the second guide rail, and two second mounting seats are provided on the third guide rail. When the nozzles exchange positions, each first mounting seat is arranged corresponding to the second mounting seat one by one. The first nozzle is transferred from the first mounting seat to the corresponding second mounting seat, and the second nozzle is transferred from the second mounting seat to the corresponding first mounting seat.

[0015] According to some embodiments of the present invention, first engaging members are respectively provided on two side walls of the nozzle along the first direction, and second engaging members are respectively provided on opposite side walls of the mounting seat. The nozzle is connected to any one of the first mounting seat and the second mounting seat through the connection of any first engaging member and the corresponding second engaging member on the corresponding side.

[0016] According to some embodiments of the present invention, a butting plate is provided on any one of the first engaging member and the second engaging member, and a first opening is defined in the butting plate. A plugging member is provided on the other one. When the nozzle is connected to the mounting seat, the plugging member passes through the first opening and is driven to rotate until the plugging member abuts against the inner wall of the butting plate to limit the separation of the nozzle from the mounting seat.

[0017] According to some embodiments of the present invention, the second engaging member is a plugging member, and the mounting seat is further provided with a locking motor, and an output shaft of the locking motor is connected to the plugging member to drive the plugging member to rotate.

[0018] According to some embodiments of the present utility model, any one of the first fitting and the second fitting is an electromagnet, and the other is a magnetic member. When the nozzle is connected to the mounting seat, the electromagnet adsorbs the magnetic member to limit the separation of the nozzle from the mounting seat.

[0019] According to some embodiments of the present utility model, the mounting seat includes a plurality of electromagnets, and the electromagnets are circumferentially distributed along the mounting seat.

[0020] According to some embodiments of the present utility model, the nozzle includes a nozzle and a heat dissipation member, and the heat dissipation member is disposed corresponding to the nozzle.

[0021] According to some embodiments of the present utility model, an exchange seat is provided on any one of the second guide rail and the third guide rail, and the exchange seat is fixedly disposed on the second guide rail or the third guide rail;

[0022] When the first nozzle and the second nozzle exchange positions, the exchange seat is used to temporarily store the first nozzle or the second nozzle.

[0023] According to some embodiments of the present utility model, first fittings are respectively disposed on two side walls of the nozzle along the first direction, and the first fittings of the first nozzle and the second nozzle can cooperate with each other so that the first nozzle and the second nozzle are stacked on the same exchange seat or the mounting seat.

[0024] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0026] Figure 1 is a working schematic diagram of a dual-nozzle 3D printer in the prior art;

[0027] Figure 2 is a structural schematic diagram of a 3D printer according to an embodiment of the present utility model;

[0028] Figure 3 is a structural schematic diagram of a nozzle according to an embodiment of the present utility model;

[0029] Figure 4 is a structural schematic diagram of a mounting seat according to an embodiment of the present utility model;

[0030] Figure 5 is a structural schematic diagram of the connection between a nozzle and a mounting seat according to an embodiment of the present utility model;

[0031] Figure 6 Schematic diagram of the handover process of a 3D printer with another structure according to an embodiment of the present invention;

[0032] Figure 7 Another schematic diagram of the handover process of a 3D printer with another structure according to an embodiment of the present invention.

[0033] Reference numerals:

[0034] First guide rail 110; Second guide rail 120; Third guide rail 130;

[0035] Mounting seat 200; First mounting seat 210; First sub-seat 211; Second sub-seat 212; Second mounting seat 220; Third sub-seat 221; Fourth sub-seat 222; Second fitting 230; Plug-in member 231; Electromagnet 232;

[0036] Nozzle 300; First nozzle 310; Second nozzle 320; First fitting 330; Abutting plate 331; First opening 332; Magnetic member 333; Heat dissipation member 340;

[0037] Exchange seat 400. Detailed implementation manners

[0038] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0039] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is 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 thus should not be construed as a limitation of the present invention.

[0040] In the description of the present invention, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or the sequence relationship of the indicated technical features.

[0041] In the description of the present utility model, unless otherwise clearly defined, terms such as "arrangement", "installation", "connection", etc. shall be understood in a broad sense, and those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0042] In the description of the present utility model, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0043] The emergence of 3D printing technology has brought about earth-shaking changes to the manufacturing industry. 3D printing technology constructs three-dimensional entities by heating and melting solid materials layer by layer, greatly shortening the production cycle. 3D printing technology can also achieve customized production of components with complex structures, meeting the diverse needs of consumers.

[0044] In the prior art, some 3D printers adopt a dual-nozzle structure to improve printing efficiency. However, each nozzle has a fixed printing area, and the printing areas of the two nozzles do not overlap. If the printing areas overlap, it will cause interference between the movements of the two nozzles, resulting in machine failures or printing failures. Therefore, the improvement of the printing efficiency of this type of 3D printer is limited.

[0045] To solve the above problems, an embodiment of the present application provides a 3D printer, which includes a first guide rail 110, a second guide rail 120, a third guide rail 130, a mounting seat 200, and a nozzle 300. The first guide rail 110 extends along a first direction, and both the second guide rail 120 and the third guide rail 130 extend along a second direction. The first direction and the second direction intersect. Preferably, in the Figure 2 embodiment shown, the first direction and the second direction are two mutually perpendicular directions in the horizontal plane.

[0046] The number of the first guide rails 110 can be one or more. The first guide rails 110 are the installation bases for the second guide rails 120, the third guide rails 130, the mounting seats 200 and the nozzles 300. The mounting seats 200 and the nozzles 300 are mounted on the second guide rails 120 and the third guide rails 130, and the second guide rails 120 and the third guide rails 130 are further mounted on the first guide rails 110. Among them, both the second guide rails 120 and the third guide rails 130 are connected with independent driving mechanisms. The second guide rails 120 can be driven to move relative to the first guide rails 110 along the first direction, and the third guide rails 130 can be driven to move relative to the first guide rails 110 along the first direction. The second guide rails 120 and the third guide rails 130 can move towards each other or away from each other. In the embodiment as Figure 2 shown, the number of the first guide rails 110 is two. The two first guide rails 110 are arranged in parallel. The two ends of the second guide rails 120 and the two ends of the third guide rails 130 are respectively connected to the two first guide rails 110, thereby defining the maximum range of movement of the nozzles 300.

[0047] The mounting seats 200 are arranged on the above-mentioned first guide rails 110 and second guide rails 120. For the convenience of distinction, the mounting seats 200 arranged on the second guide rails 120 are named the first mounting seats 210, and the mounting seats 200 arranged on the third guide rails 130 are named the second mounting seats 220. Among them, the first mounting seats 210 are slidably connected to the second guide rails 120 and can move relative to the second guide rails 120 along the second direction. The second mounting seats 220 are slidably connected to the third guide rails 130 and can move relative to the third guide rails 130 along the second direction. It should be noted that both the second mounting seats 220 and the third mounting seats 200 are connected with independent driving mechanisms. Thus, the first mounting seats 210 can move in the horizontal plane, and the second mounting seats 220 can also move independently in the horizontal plane. The nozzles 300 are connected to the mounting seats 200. Therefore, each nozzle 300 can perform printing actions respectively.

[0048] For the convenience of distinction, the nozzles 300 connected to the first mounting seats 210 are named the first nozzles 310, and the nozzles 300 connected to the second mounting seats 220 are named the second nozzles 320. That is, the first nozzles 310 are arranged on the second guide rails 120, and the second nozzles 320 are arranged on the third guide rails 130. It should be noted that the connection between the first nozzles 310 and the first mounting seats 210 is a detachable connection, and the connection between the second nozzles 320 and the second mounting seats 220 is also a detachable connection. On the one hand, it is convenient to replace the nozzles 300 to match different printing requirements. On the other hand, it provides a structural basis for the two nozzles 300 to exchange positions.

[0049] In the prior art, although some printers have two independently moving nozzles 300, due to problems such as rail interference, the printing areas of the two nozzles 300 cannot overlap, that is, asFigure 1 As shown in the upper figure above, the nozzle A can only print the area C, and the nozzle B can only print the area D ( Figure 1 The area C and the area D in are distinguished by different hatching), or, as Figure 1 shown in the lower figure below, even if the nozzle A can move to the area D for printing, when the nozzle A moves to the right into the area D, the moving range of the nozzle B to the left is greatly limited. To avoid the collision of the guide rails of the nozzle A and the nozzle B, the nozzle B often needs to avoid the nozzle A and thus cannot perform the printing action, which greatly affects the printing efficiency of the dual-nozzle 300.

[0050] In the present application, since the nozzle 300 and the mounting base 200 are detachably connected, therefore, the first nozzle 310 can be separated from the first mounting base 210 and connected to the second mounting base 220, and the second nozzle 320 can be separated from the second mounting base 220 and connected to the first mounting base 210, so that the first nozzle 310 is exchanged from the second guide rail 120 to the third guide rail 130, and the second nozzle 320 is exchanged from the third guide rail 130 to the second guide rail 120. It should be noted that the position exchange of the first nozzle 310 and the second nozzle 320 can be achieved by an external robotic arm or manipulator, or, alternatively, it can also be achieved by the docking of the mounting base 200 on the first guide rail 110 and the second guide rail 120 to exchange the nozzle 300 (the two nozzle 300 exchange processes are described in detail below).

[0051] The discharge size, the material tape, the printing accuracy, etc. of the first nozzle 310 and the second nozzle 320 may be different. Taking the first nozzle 310 as a fine-printing nozzle and the second nozzle 320 as a rough-printing nozzle as an example, the first nozzle 310 is responsible for fine-detail processing, and the second nozzle 320 is responsible for the construction of the model body. The two nozzles 300 need to cooperate with each other for manufacturing. Thus, during the working process of the 3D printer, the first nozzle 310 has a need to move to the area printed by the second nozzle 320 for detail construction, and the second nozzle 320 also has a need to move to the area printed by the first nozzle 310 for body construction. The printing areas of the two nozzles 300 overlap.

[0052] The 3D printers in the prior art often only allow a single nozzle 300 to perform cross-region printing, that is, as Figure 1As shown in the figure, when the nozzle A moves to area D, the nozzle B needs to avoid and cannot work. When the 3D printer of the present application faces the overlap of the printing areas, it can exchange the positions of the first nozzle 310 and the second nozzle 320, so that the active ranges of the first nozzle 310 and the second nozzle 320 are exchanged. For example, when the original printing area of the first nozzle 310 is the left area and the original printing area of the second nozzle 320 is the right area, when the first nozzle 310 needs to perform detailed construction on the right area, the first nozzle 310 and the second nozzle 320 exchange the guide rails, so that the first nozzle 310 is exchanged to the third guide rail 130, and the second nozzle 320 is exchanged to the second guide rail 120. Thus, while the first nozzle 310 performs detailed construction on the right area, the second nozzle 320 can also perform main body construction on the left area, greatly improving the printing efficiency of the dual-nozzle 300 printer.

[0053] Based on the above, since the 3D printer of the present application can realize the exchange of the nozzles 300 on the second guide rail 120 and the third guide rail 130 during the working process, changing the working areas of the first nozzle 310 and the second nozzle 320, so that the printing areas of the first nozzle 310 and the second nozzle 320 overlap. After the exchange, the two nozzles 300 can still independently perform printing work, and the working range of a single nozzle 300 is greatly improved, eliminating the problem of mutual dependence of the nozzles 300 in the traditional design. The movement of the nozzles 300 is no longer restricted by the guide rails, and thus can handle larger or more complex model manufacturing, thereby improving the performance and practical value of the 3D printer.

[0054] In some embodiments, as Figure 2 shown, the second guide rail 120 is provided with two first mounting seats 210, and the third guide rail 130 is provided with two second mounting seats 220. When the nozzles 300 exchange positions, each first mounting seat 210 is arranged corresponding to the second mounting seat 220. Thus, the first nozzle 310 can be transferred from the first mounting seat 210 to the corresponding second mounting seat 220, and the second nozzle 320 is transferred from the second mounting seat 220 to the corresponding first mounting seat 210. Thus, the first nozzle 310 is exchanged from the second guide rail 120 to the third guide rail 130, and the second nozzle 320 is exchanged from the third guide rail 130 to the second guide rail 120.

[0055] It should be noted that in this embodiment, two mounting seats 200 capable of sliding in the second direction relative to the guide rails are provided on each guide rail. For the convenience of distinction, the two first mounting seats 210 are respectively named the first sub-seat 211 and the second sub-seat 212, and the two second mounting seats 220 are respectively named the third sub-seat 221 and the fourth sub-seat 222. It should be noted that nozzles 300 are provided on the first sub-seat 211 and the fourth sub-seat 222, and the second sub-seat 212 and the third sub-seat 221 are vacant. During the handover, the first nozzle 310 on the first sub-seat 211 is transferred to the third sub-seat 221, and the second nozzle 320 on the fourth sub-seat 222 is transferred to the second sub-seat 212. This handover method is relatively direct, without the need to set up a transfer and temporary storage mechanism, with a simple and clear structure and clear handover logic.

[0056] Furthermore, to achieve full-automatic handover on the 3D printer without introducing an external robotic arm or manipulator, corresponding improvements to the mating structure of the nozzle 300 and the mounting seat 200 of the present application are made. Specifically, as Figures 2 to 4 shown, first mating members 330 are respectively provided on two side walls of the nozzle 300 along the first direction, and second mating members 230 are respectively provided on the opposite side walls of the mounting seat 200. It should be explained that in the embodiment as Figure 2 shown, the nozzle 300 is arranged between the second guide rail 120 and the third guide rail 130. The two side walls of the nozzle 300 along the first direction are the side wall of the nozzle 300 facing the second guide rail 120 and the side wall of the nozzle 300 facing the third guide rail 130. For the first mounting seat 210, the opposite side walls are the side walls of the first mounting seat 210 facing the third guide rail 130, and for the second mounting seat 220, the opposite side walls are the side walls of the second mounting seat 220 facing the second guide rail 120.

[0057] It can be found that since the nozzle 300 is arranged between the second guide rail 120 and the third guide rail 130, and first mating members 330 capable of mating with the second mating members 230 are provided on both sides of the nozzle 300, during the handover process, the first mounting seat 210, the first nozzle 310, and the second mounting seat 220 can be docked in sequence. First, connect the first mating member 330 on the right side of the first nozzle 310 with the second mating member 230 of the second mounting seat 220, and then disconnect the first mating member 330 on the left side of the first nozzle 310 from the second mating member 230 of the first mounting seat 210, so that the first nozzle 310 is handed over from the first mounting seat 210 to the second mounting seat 220. The handover of the second nozzle 320 is the same.

[0058] Refer to Figures 2 to 5In the illustrated embodiment, the first fitting 330 and the second fitting 230 are in plug-in fit. Either the first fitting 330 or the second fitting 230 is provided with an abutting plate 331, and the other is provided with a plug-in member 231. As Figure 3 Taking the first fitting 330 shown as the abutting plate 331 as an example, the abutting plate 331 is used to abut against the mounting base 200. The abutting plate 331 defines a first opening 332, and the second fitting 230 is provided as a plug-in member 231. When the nozzle 300 is connected to the mounting base 200, the plug-in member 231 passes through the abutting plate 331 from the first opening 332 and is driven to rotate until the plug-in member 231 abuts against the inner wall of the abutting plate 331, thereby restricting the separation of the nozzle 300 from the mounting base 200.

[0059] Furthermore, the second fitting 230 is a plug-in member 231, and the mounting base 200 is provided with a locking motor (not shown in the figure). The output shaft of the locking motor is connected to the plug-in member 231 to drive the plug-in member 231 to rotate. It should be noted that by arranging the locking motor on the mounting base 200, the volume of the nozzle 300 is reduced, and the load of the nozzle 300 is decreased.

[0060] In some other embodiments, referring to Figures 3 to 5 shown, the first fitting 330 and the second fitting 230 can also be in magnetic attraction fit. That is, either the first fitting 330 or the second fitting 230 is an electromagnet 232, and the other is a magnetic member 333. When the nozzle 300 is connected to the mounting base 200, the electromagnet 232 adsorbs the magnetic member 333 to restrict the separation of the nozzle 300 and the mounting base 200. It should be explained that the magnetic member 333 can be a magnetic metal such as iron or nickel, or a permanent magnet with magnetism. When the electromagnet 232 is energized, it has magnetism and can generate an adsorption effect with the magnetic member 333, thereby fixing the nozzle 300 on the mounting base 200 to restrict the separation of the nozzle 300 from the mounting base 200. When the electromagnet 232 is de-energized, the magnetism disappears, and the nozzle 300 and the mounting base 200 can be separated.

[0061] It can be understood that the electromagnet 232 can be arranged on the mounting base 200, so as to further reduce the number of components in the nozzle 300. Further, the number of electromagnets 232 can be set to be multiple, and the electromagnets 232 are distributed along the circumferential direction of the mounting base 200. In the embodiment as Figure 3 shown, the number of electromagnets 232 is three, and the three electromagnets 232 are distributed at the edge of the mounting base 200 in an isosceles triangle or an equilateral triangle to form a stable three-point connection.

[0062] It should be noted that the first fitting 330 and the second fitting 230 can coexist in multiple fitting methods. For example, as Figures 2 to 4In the illustrated embodiment, the first mating member 330 includes an abutting plate 331 provided with a first opening 332 and a magnetic member 333, and the second mating member 230 includes a plug-in member 231 and an electromagnet 232, so that while achieving plug-in mating, magnetic attraction locking can also be performed to prevent the nozzle 300 from falling due to the failure of any one of the connection methods.

[0063] In some embodiments, the nozzle 300 includes a nozzle and a heat dissipation member 340. As Figure 3 shown, the nozzle serves to melt the high-temperature printing material. To prevent the nozzle from overheating and affecting the printing effect, the heat dissipation member 340 is provided corresponding to the nozzle and is connected to the nozzle. It can be understood that the nozzle 300 further includes an air outlet nozzle, which is provided corresponding to the material dropping point. After the molten material flows out of the nozzle and reaches the material dropping point, the air outlet nozzle can blow air to cool the molten material at the material dropping point to accelerate the solidification speed of the molten material and ensure the forming effect.

[0064] Different from the above embodiment in which the first sub-seat 211 corresponds to the third sub-seat 221 to hand over the first nozzle 310, and the fourth sub-seat 222 corresponds to the second sub-seat 212 to hand over the second nozzle 320, in this embodiment, the handover logic is adjusted to reduce the number of mounting seats 200. Specifically, an exchange seat 400 is provided on either the second guide rail 120 or the third guide rail 130. It should be noted that the exchange seat 400 does not play a role in driving the nozzle 300 to move for printing work. When the first nozzle 310 and the second nozzle 320 exchange positions, the exchange seat 400 is used to temporarily store the first nozzle 310 or the second nozzle 320.

[0065] Specifically, there are various handover logics for realizing the exchange by temporary storage. For example Figure 6 and Figure 7 two handover logics shown are taken as examples for illustration.

[0066] In as Figure 6In the illustrated embodiment, the second guide rail 120 is provided with a stationary exchange seat 400 and a slidable first mounting seat 210, and the third guide rail 130 is provided with a slidable second mounting seat 220. In the initial state, the first mounting seat 210 is connected to the first nozzle 310, and the second mounting seat 220 is connected to the second nozzle 320. First, the second mounting seat 220 docks with the exchange seat 400 and hands over the second nozzle 320 to the exchange seat 400 for temporary storage. Then, the second mounting seat 220 moves to dock with the first mounting seat 210 and obtains the first nozzle 310. After that, the second mounting seat 220 docks with the exchange seat 400 again and obtains the second nozzle 320. At this time, the second mounting seat 220 is connected to the first nozzle 310 and the second nozzle 320, and the second nozzle 320, the first nozzle 310, and the exchange seat 400 are arranged in sequence. Finally, the second mounting seat 220 docks with the first mounting seat 210 and hands over the second nozzle 320 to the first mounting seat 210, thus completing the exchange of the nozzles 300 between the first mounting seat 210 and the second mounting seat 220.

[0067] In the embodiment as Figure 7 shown, the second guide rail 120 is also provided with a stationary exchange seat 400 and a slidable first mounting seat 210, and the third guide rail 130 is provided with a slidable second mounting seat 220. In the initial state, the first mounting seat 210 is connected to the first nozzle 310, and the second mounting seat 220 is connected to the second nozzle 320. First, the second mounting seat 220 docks with the first mounting seat 210 and obtains the first nozzle 310. At this time, the second mounting seat 220 is connected to the first nozzle 310 and the second nozzle 320, and the first nozzle 310, the second nozzle 320, and the second mounting seat 220 are arranged in sequence. Then, the second mounting seat 220 moves to dock with the exchange seat 400 to hand over the first nozzle 310 to the exchange seat 400 for temporary storage. After that, the second mounting seat 220 docks with the first mounting seat 210 again to hand over the second nozzle 320 to the first mounting seat 210. Finally, the second mounting seat 220 docks with the exchange seat 400 to pick up the first nozzle 310, thus completing the exchange of the nozzles 300 between the first mounting seat 210 and the second mounting seat 220.

[0068] Based on the above, it can be found that in a printer with such a handover logic, only two movable mounting seats 200 need to be provided, thereby reducing the number of driving mechanisms, simplifying the structure of the printer, and reducing the cost of the printer.

[0069] It should be noted that, compared with the aforementioned embodiment in which the first sub-mount 211 corresponds to the third sub-mount 221 to connect the first nozzle 310, and the fourth sub-mount 222 corresponds to the second sub-mount 212 to connect the second nozzle 320, the first nozzle 310 and the second nozzle 320 in this embodiment need to be overlapped and connected. To this end, the two first matching pieces 330 of the nozzle 300 need to be adjusted accordingly: the first matching pieces 330 of the first nozzle 310 and the second nozzle 320 can match each other, so that the first nozzle 310 and the second nozzle 320 are stacked on the same exchange seat 400 or the mounting seat 200.

[0070] Taking the magnetic connection between the first matching piece 330 and the second matching piece 230 as an example, the first matching piece 330 on the left side wall of the first nozzle 310 is set as a magnetic piece, and the first matching piece 330 on the right side wall of the first nozzle 310 is set as an electromagnet 232, so that the first nozzle 310 can be adsorbed on the second nozzle 320 through the electromagnet 232, and the first nozzle 310 can also be adsorbed on the second mounting seat 220 through the electromagnet 232.

[0071] It can be understood that in any of the above embodiments, each guide rail can use a high-precision, low-friction linear guide rail to reduce operating wear and improve positioning accuracy; a servo motor can also be used in conjunction with a high-resolution encoder to improve the smoothness of movement and control accuracy; in addition, a dust cover or sealing structure can be added to prevent dust and debris from entering the guide rail to ensure the long-term stable operation of the printer; in addition, a closed-loop control system can be introduced to detect and correct the position of the guide rail and the mounting seat 200 to ensure accuracy during long-term operation.

[0072] The embodiments of the utility model are described in detail above in conjunction with the accompanying drawings, but the utility model is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the utility model. In addition, the embodiments of the utility model and the features in the embodiments can be combined with each other without conflict.

Claims

1. 3D printer, characterized in that, include: a first guide rail extending along a first direction; a second guide rail, the second guide rail extending along a second direction, the second guide rail being driven to move along the first direction relative to the first guide rail, the second direction intersecting the first direction; a third guide rail, the third guide rail extending in parallel with the second guide rail, the third guide rail being driven to move along the first direction relative to the first guide rail; A mounting seat, the mounting seat comprising a first mounting seat slidably connected to the second guide rail, and a second mounting seat slidably connected to the third guide rail, the mounting seat being movable along the second direction; A nozzle, the nozzle comprising a first nozzle detachably connected to the first mounting seat, and a second nozzle detachably connected to the second mounting seat; The first nozzle can be separated from the first mounting seat and connected to the second mounting seat, and the second nozzle can be separated from the second mounting seat and connected to the first mounting seat, so that the first nozzle can be exchanged from the second guide rail to the third guide rail, and the second nozzle can be exchanged from the third guide rail to the second guide rail.

2. The 3D printer according to claim 1, characterized in that: The second guide rail is provided with two first mounting seats, and the third guide rail is provided with two second mounting seats. When the nozzles exchange positions, each first mounting seat is provided corresponding to the second mounting seat one by one, and the first nozzle is connected from the first mounting seat to the corresponding second mounting seat, and the second nozzle is connected from the second mounting seat to the corresponding first mounting seat.

3. The 3D printer according to claim 2, characterized in that: The two side walls of the nozzle along the first direction are respectively provided with first matching parts, and the side walls opposite to the mounting seat are respectively provided with second matching parts. The nozzle is connected to any one of the first mounting seat and the second mounting seat through the connection between any one of the first matching parts and the corresponding side of the second matching part.

4. The 3D printer according to claim 3, characterized in that: Either one of the first mating piece and the second mating piece is provided with an abutment plate, the abutment plate defines a first opening, and the other is provided with a plug-in piece. When the nozzle is connected to the mounting seat, the plug-in piece passes through the abutment plate through the first opening and is driven to rotate until the plug-in piece abuts against the inner wall of the abutment plate to limit the separation of the nozzle and the mounting seat.

5. The 3D printer according to claim 4, characterized in that: The second matching piece is a plug-in piece, and the mounting seat is further provided with a locking motor, and the output shaft of the locking motor is connected to the plug-in piece to drive the plug-in piece to rotate.

6. The 3D printer according to claim 3, characterized in that: Either one of the first matching member and the second matching member is an electromagnet, and the other is a magnetic member. When the nozzle is connected to the mounting seat, the electromagnet absorbs the magnetic member to limit the separation of the nozzle and the mounting seat.

7. The 3D printer according to claim 6, characterized in that: The mounting seat includes a plurality of electromagnets, and each of the electromagnets is distributed along the circumference of the mounting seat.

8. The 3D printer according to claim 1, characterized in that: The nozzle comprises a nozzle and a heat sink, and the heat sink is arranged corresponding to the nozzle.

9. The 3D printer according to claim 1, characterized in that: Any one of the second guide rail and the third guide rail is provided with an exchange seat, and the exchange seat is fixedly arranged on the second guide rail or the third guide rail; When the first nozzle and the second nozzle exchange positions, the exchange seat is used to temporarily store the first nozzle or the second nozzle.

10. The 3D printer according to claim 9, characterized in that: The two side walls of the nozzle along the first direction are respectively provided with first matching parts, and the first matching parts of the first nozzle and the second nozzle can match with each other so that the first nozzle and the second nozzle are stacked on the same exchange seat or the mounting seat.

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