Printing head replacing device of 3D printer

Abstract

The utility model provides a 3D printer printing head replacing device which comprises a multi-axis device, a printing head replacing device and a printing head replacing device, the multi-axis device comprises an X-axis assembly and a Y-axis assembly, and the Y-axis assembly slides on the X-axis assembly; a plurality of bearing plates are arranged on the cross beam support, and the machining units are connected with the bearing plates in a magnetic attraction mode. The Y-axis assembly is provided with a set of bearing plates used for loading machining units, and the bearing plates arranged on the Y-axis assembly slide on the Y-axis assembly. The machining unit comprises a base and an extrusion head, and the base is connected with the bearing plate in a magnetic attraction mode. According to the cross beam support provided by the utility model, a processing unit storage area is constructed, exchange and transfer of the extrusion heads are realized by combining magnetic connection of the processing units and the bearing plate, automatic switching is realized in a magnetic attraction connection mode, the requirement of mechanical fixation is reduced, the switching efficiency of the extrusion heads is improved, and the conversion efficiency of equipment in the processing process is enhanced.

Description

Technical Field

[0001] This utility model belongs to the technical field of 3D printer equipment, and in particular relates to a 3D printer printhead replacement device. Background Technology

[0002] A 3D printer, also known as a three-dimensional printer (3DP), is a type of additive manufacturing technology, or rapid prototyping technology. It uses a digital model file as a basis and employs special waxes, powdered metals, or plastics—materials that can be bonded—to create three-dimensional objects by printing layer by layer of this bonding material. Currently, 3D printers are used to manufacture products. It's a technology that constructs objects by printing layer by layer. The principle of a 3D printer is that data and materials are put into the printer, and the machine will build the product layer by layer according to the program.

[0003] During the manufacturing process, 3D printers use different printing materials depending on the processing requirements. Currently, most materials are switched manually, which results in low processing efficiency and affects the overall processing progress. Utility Model Content

[0004] This invention provides a 3D printer printhead replacement device, which aims to solve the problem that the current method of manually switching and assembling different printing materials results in low switching efficiency and affects the overall processing progress.

[0005] This utility model is implemented as follows: a 3D printer printhead replacement device, comprising:

[0006] A multi-axis device, the multi-axis device including an X-axis assembly and a Y-axis assembly, the Y-axis assembly sliding on the X-axis assembly;

[0007] A crossbeam support and several sets of processing units, wherein the crossbeam support is provided with several sets of bearing plates, and the processing unit includes a base and an extrusion head, wherein the base is magnetically connected to the bearing plate;

[0008] The Y-axis assembly is provided with a set of support plates for loading the machining unit, and the support plates on the Y-axis assembly slide on the Y-axis assembly;

[0009] The processing unit is equipped with a material conveying pipe and a traction mechanism. The printing material passes through the processing unit via the material conveying pipe, and the traction mechanism extends into the material conveying pipe to act on the printing material.

[0010] Preferably, the base is provided with a first connecting surface and a second connecting surface. The first connecting surface is magnetically connected to a bearing plate provided on the Y-axis assembly. When the processing unit is located on the crossbeam support, the processing unit is magnetically connected to the bearing plate provided on the crossbeam support through the second connecting surface.

[0011] Preferably, the first connecting surface and the second connecting surface are opposite surfaces of the base.

[0012] Preferably, both the first connecting surface and the second connecting surface are provided with magnetic connection units. The magnetic connection unit includes several sets of positioning posts and magnetic blocks, and the positioning posts and magnetic blocks are staggered on the base.

[0013] Preferably, the support plate is further provided with positioning holes adapted to the positioning posts, and the positions of the positioning posts and the positions of the positioning holes correspond one-to-one.

[0014] Preferably, the crossbeam support is arranged parallel to the Y-axis assembly, and several sets of bearing plates on the crossbeam support are arranged parallel to the Y-axis assembly.

[0015] Preferably, the support plate is equipped with an electromagnet module.

[0016] Preferably, the end face of the bearing plate is provided with a magnetic groove, and an electromagnet is provided inside the magnetic groove. The position of the magnetic groove corresponds one-to-one with the position of the magnetic block.

[0017] Preferably, the material delivery pipe includes an outer tube body located at the top of the base and an inner conduit disposed inside the processing unit. The outer tube body and the inner conduit are interconnected. The printing material is inserted into the outer tube body and exits from the end of the inner conduit away from the outer tube body.

[0018] Preferably, the traction mechanism includes a rotating shaft, a traction wheel, a traction motor, and a support seat located on top of the base. The rotating shaft is mounted on the support seat via bearings, and the traction wheel is mounted on the rotating shaft.

[0019] The traction wheel includes a transmission gear and a friction wheel. The transmission gear is meshed with a drive gear at the end of the motor shaft of the traction motor. The outer tube has a notch, and the friction wheel extends from the notch into the interior of the outer tube to contact and connect with the printing material.

[0020] Compared with the prior art, the embodiments of this application have the following main advantages:

[0021] The 3D printer printhead replacement device provided by this utility model constructs a processing unit storage area through a crossbeam support. It utilizes several sets of support plates set on the crossbeam support and combines the magnetic connection between the processing unit and the support plate to realize the exchange and transfer of extrusion heads. The magnetic connection method realizes automated switching, reduces the need for manual switching and assembly, improves the work efficiency of the material switching process, and reduces the impact on the overall processing progress. Attached Figure Description

[0022] Figure 1This is a schematic diagram of the structure of a 3D printer printhead replacement device provided by this utility model.

[0023] Figure 2 This is a top view of the structure of a 3D printer printhead replacement device provided by this utility model.

[0024] Figure 3 This is a side view of a 3D printer printhead replacement device provided by this utility model.

[0025] Figure 4 This is a schematic diagram of the crossbeam support and processing unit in a 3D printer printhead replacement device provided by this utility model.

[0026] Figure 5 This is a schematic diagram of the crossbeam support structure of a 3D printer printhead replacement device provided by this utility model.

[0027] Figure 6 This is a schematic diagram of the processing unit structure of a 3D printer printhead replacement device provided by this utility model.

[0028] Figure 7 This is a schematic diagram of the processing unit structure of a 3D printer printhead replacement device provided by this utility model.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Multi-axis device; 110. X-axis assembly; 120. Y-axis assembly; 20. Bearing plate; 21. Magnetic suction groove; 30. Processing unit; 301. First connecting surface; 310. Base; 311. Positioning column; 312. Magnetic block; 320. Extrusion head; 331. Outer tube; 332. Inner guide tube; 340. Traction mechanism; 341. Rotating shaft; 342. Traction wheel; 343. Traction motor; 344. Support seat; 40. Crossbeam bracket; 400. Printing material.

[0031] 331. Outer tube; 332. Inner guide tube; 340. Traction mechanism; 341. Rotating shaft; 342. Traction wheel; 343. Traction motor; 344. Support base Detailed Implementation

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0033] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0034] This utility model embodiment provides a 3D printer printhead replacement device, such as... Figures 1-6 As shown, the 3D printer printhead replacement device includes:

[0035] A multi-axis device 10 is provided, comprising an X-axis assembly 110 and a Y-axis assembly 120, wherein the Y-axis assembly 120 slides on the X-axis assembly 110. The multi-axis device 10 shown in the figure is a simplified schematic diagram of a multi-axis motion system for a 3D printer. Its technical principles are existing technology and will not be detailed in this application. The main function of the multi-axis device 10 is to utilize the X-axis assembly 110 and the Y-axis assembly 120 to enable the cutting tool mechanism of the multi-axis device 10 to move within the plane formed by the X-axis assembly 110 and the Y-axis assembly 120. The multi-axis device 10 may also include a Z-axis assembly (not shown in this application), which is used to meet the need for the 3D printer's printing portion to move in three-dimensional space.

[0036] The system includes a crossbeam support 40 and several processing units 30. The crossbeam support 40 is equipped with several sets of support plates 20, and the processing units 30 are magnetically connected to the support plates 20. The crossbeam support 40 is arranged on one side of the X-axis assembly 110, and the Y-axis assembly 120 is equipped with a set of support plates 20 for loading the processing units 30. The support plates 20 on the Y-axis assembly 120 slide on the Y-axis assembly 120. The processing unit 30 includes a base 310 and an extrusion head 320, with the extrusion head 320 located at the front end of the base 310. The processing unit 30 is also equipped with a material delivery pipe, through which printing material 400 for 3D printing extends into the processing unit 30. The base 310 is also equipped with a traction mechanism 340 for moving the printing material 400.

[0037] The crossbeam support 40 serves as a storage area for the processing unit 30. When the processing unit 30 needs to be switched, the X-axis assembly 110 and the Y-axis assembly 120 will move the processing unit 30 located on the Y-axis assembly 120 to the vicinity of the crossbeam support 40. First, the processing unit 30 on the Y-axis assembly 120 will be returned to the crossbeam support 40. Then, the X-axis assembly 110 and the Y-axis assembly 120 will move the support plate 20 to the location of the processing unit 30 to be used for connection.

[0038] In this application, the base 310 is provided with a first connecting surface 301 and a second connecting surface, which are opposite surfaces of the base 310; both the first connecting surface 301 and the second connecting surface are provided with magnetic connection units, and the first connecting surface 301 is magnetically connected to the bearing plate 20 provided on the Y-axis assembly 120. When the processing unit 30 is located on the crossbeam bracket 40, the processing unit 30 is magnetically connected to the bearing plate 20 provided on the crossbeam bracket 40 through the second connecting surface.

[0039] When the processing unit 30 is returned to the crossbeam support 40, the second connecting surface of the processing unit 30 on the Y-axis assembly 120 will approach the support plate 20 on the crossbeam support 40, and a magnetic connection will be established between the support plate 20 on the crossbeam support 40 and the processing unit 30 on the Y-axis assembly 120. The magnetic connection between the support plate 20 on the Y-axis assembly 120 and the processing unit 30 on the Y-axis assembly 120 will be released. At this time, the first connecting surface 301 between the support plate 20 on the Y-axis assembly 120 and the processing unit 30 will move away from each other, and the support plate 20 on the Y-axis assembly 120 will move to the vicinity of other groups of processing units 30. The support plate 20 on the Y-axis assembly 120 will re-establish a magnetic connection with the new group of processing units 30, and the magnetic connection between the new group of processing units 30 and the support plate 20 on the crossbeam support 40 will be released.

[0040] In this process, the magnetic connection between the processing unit 30 and the support plate 20 enables automated switching of the extrusion head, reducing the need for manual switching and assembly, improving the efficiency of the material switching process, and minimizing the impact on the overall processing progress.

[0041] As a preferred embodiment of this embodiment, magnetic connection units are provided on both the first connecting surface 301 and the second connecting surface. Each magnetic connection unit includes several sets of positioning posts 311 and magnetic blocks 312. The positioning posts 311 and magnetic blocks 312 are staggered on the base 310.

[0042] The bearing plate 20 is also provided with positioning holes 21 that are adapted to the positioning posts 311, and the positions of the positioning posts 311 and the positions of the positioning holes correspond one-to-one.

[0043] The support plate 20 is equipped with an electromagnet module, which generates a magnetic attraction with the magnetic block 312. The support plate 20 on the Y-axis assembly 120 is powered by the conductive slide rail structure of the Y-axis assembly 120. The crossbeam bracket 40 also provides power to the support plate 20 on the crossbeam bracket 40 through internal wiring. During the transfer of the processing unit 30, the support plate 20 on the Y-axis assembly 120 and the support plate 20 on the crossbeam bracket 40 will change their magnetic connection state through the switching of the power state, so that the magnetic attraction on both sides of the processing unit 30 is different. When pulled by external force, the side with weaker magnetic attraction will separate in advance. The magnetic block 312 can also use electromagnet technology to generate magnetism. This allows the side that needs to be demagnetized to be completely demagnetized, leaving only one side to maintain the magnetic connection, making it easier to separate the side.

[0044] In a preferred embodiment of this invention, both the first connecting surface 301 and the second connecting surface are provided with magnetic connection units. Each magnetic connection unit includes several sets of positioning posts 311 and magnetic blocks 312, which are staggered on the base 310. The support plate 20 is also provided with positioning holes 21 that are adapted to the positioning posts 311, and the positions of the positioning posts 311 and the positions of the positioning holes correspond one-to-one. The end face of the support plate 20 is provided with a magnetic groove, and an electromagnet is provided inside the magnetic groove. The position of the magnetic groove corresponds one-to-one with the position of the magnetic blocks 312.

[0045] The electromagnet on the support plate 20 of the Y-axis assembly 120 is powered by the conductive slide rail structure of the Y-axis assembly 120. The crossbeam bracket 40 also powers the electromagnet on the support plate 20 of the crossbeam bracket 40 through internal wiring. During the transfer of the processing unit 30, the support plate 20 on the Y-axis assembly 120 and the support plate 20 on the crossbeam bracket 40 will change their magnetic connection state through the switching of their energized states. In this application, a distributed electromagnet structure is used to increase the connection effect.

[0046] In a preferred embodiment of this invention, the crossbeam support 40 is arranged parallel to the Y-axis assembly 120, and a plurality of bearing plates 20 provided on the crossbeam support 40 are arranged parallel to the Y-axis assembly 120.

[0047] In this embodiment, different processing units 30 are arranged on different bearing plates 20 on the crossbeam support 40. In the initial state, no processing units 30 are arranged on the bearing plate 20 on the Y-axis assembly 120, but a certain number of processing units 30 are arranged on the crossbeam support 40. When a processing unit 30 is needed, it will reach the designated bearing plate 20 to retrieve the designated processing unit 30. When it is ready to be completed, the previous set of processing units 30 will be returned first, and then a new processing unit 30 will be selected. Here, different processing units 30 can be arranged in advance. When switching is needed, a grating positioning tool will be used to help move them to the designated area for return and retrieval. The control equipment and principle technology are all existing technologies.

[0048] In a preferred embodiment of this invention, the material delivery pipe includes an outer tube 331 located at the top of the base 310 and an inner conduit 332 disposed inside the processing unit 30. The outer tube 331 and the inner conduit 332 are interconnected. The printing material 400 is inserted into the outer tube 331 and exits from the end of the inner conduit 332 away from the outer tube 331. Here, the end of the inner conduit 332 passes through the extruder 320.

[0049] The traction mechanism 340 includes a rotating shaft 341, a traction wheel 342, a traction motor 343, and a support base 344. The rotating shaft 341 is mounted on the support base 344 via bearings, and the traction wheel 342 is mounted on the rotating shaft 341. The traction wheel 342 consists of two parts: a transmission gear and a friction wheel. The transmission gear meshes with a drive gear at the end of the motor shaft of the traction motor 343. The outer tube 331 has a notch, and the friction wheel extends from the notch into the interior of the outer tube 331 to contact and connect with the printing material 400. When the traction motor 343 drives the traction wheel 342 to rotate, the printing material 400 moves along the material delivery pipe under the friction of the friction wheel.

[0050] The traction motor 343 is a conventional technology that is mounted on the top of the base 310 via a fixed seat; the printing material 400 is fed in a coil manner, and the printing material 400 will automatically extend as the processing unit 30 moves.

[0051] It should be noted that, for the sake of simplicity, the foregoing embodiments are all described as a series of actions. However, those skilled in the art should understand that the present invention is not limited to the described order of actions, as some steps may be performed in other orders or simultaneously according to the present invention. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0052] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on these embodiments, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Although this utility model has been described in detail with reference to the above embodiments, those skilled in the art can still combine, add, delete, or otherwise adjust the features of the various embodiments of this utility model according to the circumstances without conflict or creative effort, thereby obtaining different technical solutions that do not fundamentally depart from the concept of this utility model. These technical solutions are also within the scope of protection of this utility model.

Claims

1. A 3D printer head replacement device, characterized in that, The utility model relates to a kind of multi-axis device (10), the multi-axis device (10) includes X-axis component (110) and Y-axis component (120), the Y-axis component (120) is slid on X-axis component (110); Beam support (40) and several groups of processing units (30) for conveying printing material (400) are provided on the beam support (40) several groups of bearing plates (20), the processing unit (30) includes base (310) and extrusion head (320), the base (310) is magnetically connected with bearing plate (20); The Y-axis component (120) is provided with a group of bearing plates (20) for loading processing unit (30), the bearing plate (20) on the Y-axis component (120) is slid on the Y-axis component (120); The processing unit (30) is provided with material conveying pipe and traction mechanism (340), and the printing material (400) passes through the material conveying pipe and penetrates the processing unit (30), and the traction mechanism (340) extends into the material conveying pipe and acts on the printing material (400). The base (310) is provided with first connecting surface (301) and second connecting surface, the first connecting surface (301) is magnetically connected with the bearing plate (20) provided on the Y-axis component (120), when the processing unit (30) is located on the beam support (40), the processing unit (30) is magnetically connected with the bearing plate (20) provided on the beam support (40) through the second connecting surface.

2. The 3D printer head replacement device of claim 1, wherein, The first connecting surface (301) and the second connecting surface are opposite surfaces of the base (310).

3. The 3D printer head replacement device of claim 2, wherein, The first connecting surface (301) and the second connecting surface are both provided with magnetic attraction connecting unit, the magnetic attraction connecting unit includes several groups of positioning column (311) and magnetic attraction block (312), the positioning column (311) and the magnetic attraction block (312) are arranged in position on the base (310).

4. The 3D printer head replacement device of claim 3, wherein, The bearing plate (20) is also provided with positioning hole (21) matched with the positioning column (311), and the positioning column (311) is arranged in position corresponding to the positioning hole.

5. The 3D printer head replacement device of claim 4, wherein, The beam support (40) is parallel to the Y-axis component (120), and the several groups of bearing plates (20) provided on the beam support (40) are arranged in parallel to the Y-axis component (120).

6. The 3D printer head replacement device of claim 5, wherein, The bearing plate (20) is internally provided with an electromagnet module.

7. The 3D printer head replacement device of claim 6, wherein, The end surface of the bearing plate (20) is provided with a magnetic slot, an electromagnet is arranged inside the magnetic slot, and the position of the magnetic slot corresponds to the position of the magnetic attraction block (312).

8. The 3D printer head replacement device of claim 6, wherein, The material conveying pipe includes outer pipe body (331) located at the top of the base (310) and inner guide pipe (332) arranged inside the processing unit (30), the outer pipe body (331) and the inner guide pipe (332) are in communication with each other, and the printing material (400) is inserted from the outer pipe body (331) and passes out from the end of the inner guide pipe (332) away from the outer pipe body (331).

9. The 3D printer head replacement device of claim 6, wherein, ​ 10. The 3D printer head replacement device of claim 9, wherein, The traction mechanism (340) comprises a rotating shaft (341), a traction wheel (342), a traction motor (343) and a supporting seat (344) arranged on the top of the base (310), the rotating shaft (341) is assembled on the supporting seat (344) through a bearing, and the traction wheel (342) is assembled on the rotating shaft (341); The traction wheel (342) comprises a transmission gear and a friction wheel body, the transmission gear is in meshing connection with a driving gear arranged at the end of the motor shaft of the traction motor (343), and the outer pipe body (331) is provided with an opening, and the friction wheel body extends into the inner part of the outer pipe body (331) and is in contact connection with the printing material (400).

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