Leveling device and 3D printer

Abstract

The application discloses a leveling device and a 3D printer. The leveling device comprises a detection sensor and a containing part. The detection sensor comprises a first detection component and a second detection component. The second detection component is selectively adsorbed to the first detection component, and the second detection component is used to be connected with a printing head of the 3D printer. The first detection component is used to be in contact with a printing platform of the 3D printer, so that the second detection component sends a leveling signal. The containing part is arranged on the printing platform or a frame of the 3D printer, and is used to place the first detection component when the first detection component and the second detection component are separated. Thus, the actual height of a detection point on the printing platform can be obtained, so that the first layer of a printing product is uniformly adhered to the printing platform. Meanwhile, when leveling detection is not needed, the first detection component is placed in the containing part and is not connected with the printing head, so that the volume of the printing head is greatly reduced.

Description

Technical Field

[0001] This invention relates to the field of printing equipment technology, and in particular to a leveling device and a 3D printer. Background Technology

[0002] In common 3D printers, such as thermomelting 3D printers, the guide frame lowers the print head to a preset position. The nozzles selectively spray material onto the printing platform in a scanning manner according to the cross-sectional shape of the product. After the material cools, it forms the first layer of the printed product. The guide frame then drives the print head to rise to the next layer, and the second layer is printed on the basis of the first layer. Layer by layer, the three-dimensional printing is achieved.

[0003] The adhesion of the first layer of the printed product to the printing platform is crucial. If the printing platform is affected by its own problems (such as the flatness of the processing) and external factors (such as ambient temperature and usage time), the surface of the printing platform will be uneven. As a result, the distance between the nozzle and the upper surface of the printing platform will change during the spraying process at the preset position, leading to uneven adhesion of the first layer of the product to the printing platform and affecting the printing effect. Summary of the Invention

[0004] In view of this, this application provides a leveling device and a 3D printer, which can obtain the actual height of the detection points on the printing platform to ensure that the first layer of the printed product is uniformly bonded to the printing platform. At the same time, when leveling detection is not required, the first detection component is placed in the receiving part and is not connected to the print head, which greatly reduces the volume of the print head.

[0005] An embodiment of the first aspect of this application provides a leveling device for use in a 3D printer. The leveling device includes: a detection sensor and a receiving portion; the detection sensor includes a first detection component and a second detection component; the second detection component is selectively adsorbed and connected to the first detection component, and the second detection component is used to connect to the print head of the 3D printer; the first detection component is used to contact the printing platform of the 3D printer to cause the second detection component to emit a leveling signal; the receiving portion is disposed on the printing platform or frame of the 3D printer for placing the first detection component when the first detection component and the second detection component are separated.

[0006] Furthermore, the first detection component includes a first housing, a probe, and a first reset part. The first housing has a groove inside, at least part of the probe is located in the groove, and the first reset part is sleeved on the probe and located in the groove. The probe includes a detection rod, and the first reset part is used to apply a thrust to the detection rod to extend out of the groove.

[0007] Furthermore, the first detection component also includes a first magnetic attractor connected to the first housing; the second detection component includes a second housing and a second magnetic attractor connected to each other; the first magnetic attractor is used to attract the second magnetic attractor to connect the first detection component and the second detection component.

[0008] Furthermore, the probe also includes a light-shielding part and a first through hole, the first through hole being formed on the light-shielding part. The light-shielding part and the first through hole are located at the first end of the first housing, and the probe rod is located at the second end of the first housing. The first end and the second end are opposite ends of the first housing. The second detection assembly also includes a detection part, which is connected to the second housing. The detection part includes a light emitter, a light receiver, and a groove, with the light emitter and the light receiver respectively disposed on opposite sides of the groove. When the first magnetic attractant and the second magnetic attractant are attracted to each other, the light-shielding part and the first through hole are movably disposed in the groove of the detection part.

[0009] Furthermore, the probe includes a first sub-probe and a second sub-probe. The first sub-probe includes a probe rod, at least a portion of which is located within the first housing. The second sub-probe includes a light-shielding part, a first through hole, and an abutment part located within the second housing. The light-shielding part is connected to the abutment part. When the first magnetic attractor and the second magnetic attractor are attracted to each other, the probe rod and the abutment part are correspondingly arranged. The probe rod is used to push the abutment part to make the light-shielding part and the first through hole move within the groove of the detection part.

[0010] Furthermore, the first magnetic suction member is sleeved outside the first housing, and the second magnetic suction member is sleeved outside the abutment portion and located inside the second housing; the first reset portion includes a first sub-reset portion and a second sub-reset portion. The first sub-reset portion is sleeved on the detection rod and is used to apply a thrust to the detection rod to extend out of the slide groove; the second sub-reset portion is sleeved on the light-shielding portion and abuts against the abutment portion and is used to apply a thrust to the abutment portion to extend out of the second housing; when the first magnetic suction member and the second magnetic suction member are separated, at least part of the abutment portion extends out of the second housing.

[0011] Furthermore, the leveling device also includes an offset measuring component, which is disposed on the printing platform or frame of the 3D printer and connected to the receiving part; the offset measuring component is used to contact the print head or the first detection component of the 3D printer to measure the deviation value between the print head and the first detection component.

[0012] Furthermore, the offset measuring component includes a pressing part, a switching part, a second reset part, and a third housing, with at least a portion of the pressing part, the switching part, and the second reset part located inside the third housing; a first end of the pressing part extends out of the third housing for contacting the print head or the first detection component; a second end of the pressing part abuts against the switching part for pressing the switching part; the second reset part is sleeved outside the pressing part for applying a thrust close to the switching part to the pressing part, the thrust of the second reset part on the switching part being less than the pressing force when the switching part is triggered.

[0013] Furthermore, the switch includes a button and a ribbon cable interface. The button is electrically connected to the ribbon cable interface, and the button abuts against the pressing part. When the button is pressed by the pressing part, the button and the ribbon cable interface are connected.

[0014] Furthermore, the offset measuring assembly also includes a first adjusting block, a second adjusting block, and an adjusting rod; both the first and second adjusting blocks are located inside the third housing, with the inclined surface of the second adjusting block fitting against the upper surface of the inclined surface of the first adjusting block; the second adjusting block is fixedly connected to the switch part; the adjusting rod includes a connecting nut and a rod body, with the nut located outside the third housing and the rod body passing through the third housing and connected to the first adjusting block; by rotating the nut, the first adjusting block is moved in the extension direction of the rod body to adjust the distance between the second adjusting block and the pressing part.

[0015] Furthermore, the offset measuring component also includes a cover plate, a portion of which is located inside the third housing, and another portion extends out of the third housing to contact the first detection component; the force exerted by the detection rod against the first reset part to move towards the first housing so that the second detection component can send a leveling signal is greater than the pressing force of the detection rod trigger button.

[0016] An embodiment of the second aspect of this application provides a 3D printer including the leveling device of any of the first aspects.

[0017] The leveling device and 3D printer provided in this application include a detection sensor and a receiving part. The detection sensor includes a first detection component and a second detection component. When leveling detection is not required, the first and second detection components of the detection sensor are set separately, with only the second detection component connected to the print head. The first detection component is placed inside the receiving part. This arrangement is beneficial for meeting the design requirements of a small and compact print head. When leveling detection of the printing platform is required, the guide component can drive the print head to move. The second detection component is attracted to the first detection component, and the first probe component contacts the printing platform of the 3D printer, causing the second detection component to emit a leveling signal. The main controller of the 3D printer determines that the first detection component has touched the printing platform based on the received leveling signal, and then records the height of the X-axis guide frame or the actual height of the print head at this time to achieve leveling detection.

[0018] In practical use, the above steps can be used to detect multiple points on the printing platform, thereby obtaining the contour height information of the printing platform surface. During printing, the height of the print head can be compensated based on this contour height information, ensuring that the print head and the upper surface of the printing platform maintain a relatively fixed height. This allows the first layer of the printed model to adhere evenly to the upper surface of the printing platform, resulting in strong adhesion. This reduces instability during model printing and minimizes printing distortion caused by tilting, thus improving the reliability and accuracy of the printing process.

[0019] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. Wherein:

[0021] Figure 1 A schematic diagram of the structure of a detection sensor provided in one embodiment of the present invention is shown;

[0022] Figure 2 It shows Figure 1 A structural schematic diagram from one perspective of the illustrated embodiment;

[0023] Figure 3 It shows Figure 2 A cross-sectional view of the embodiment shown;

[0024] Figure 4 A schematic diagram of the structure of a second detection component provided in one embodiment of the present invention is shown;

[0025] Figure 5 An explosion schematic diagram of a second detection component provided in one embodiment of the present invention is shown;

[0026] Figure 6 A schematic diagram of the structure of a first detection component provided in an embodiment of the present invention is shown;

[0027] Figure 7 An explosion schematic diagram of a first detection component provided in one embodiment of the present invention is shown;

[0028] Figure 8 A schematic diagram of the probe structure provided in one embodiment of the present invention is shown;

[0029] Figure 9 A schematic diagram of the structure of a detection unit provided in one embodiment of the present invention is shown;

[0030] Figure 10 This diagram illustrates a structural schematic of a probe and a slotted optocoupler at one location according to an embodiment of the present invention.

[0031] Figure 11 A schematic diagram of the structure of a detection sensor provided in yet another embodiment of the present invention is shown;

[0032] Figure 12 A schematic diagram of the structure of a second detection component provided in yet another embodiment of the present invention is shown;

[0033] Figure 13 It shows Figure 12 An exploded view of one embodiment shown;

[0034] Figure 14 It shows Figure 12 An exploded view of another embodiment shown;

[0035] Figure 15 It shows Figure 12 A schematic diagram of the detection unit in the embodiment shown;

[0036] Figure 16 A schematic diagram of the structure of a first detection component provided in yet another embodiment of the present invention is shown;

[0037] Figure 17 It shows Figure 16 An exploded view of one embodiment shown;

[0038] Figure 18 It shows Figure 16 A cross-sectional view from one perspective of the illustrated embodiment;

[0039] Figure 19 This diagram illustrates the state of the second detection component when it is separated from the first detection component in yet another embodiment of the present invention.

[0040] Figure 20 This diagram illustrates the state of the second detection component when it is adsorbed and connected to the first detection component in another embodiment of the present invention.

[0041] Figure 21 This diagram illustrates the state of the probe when it is triggered when the second detection component is adsorbed and connected to the first detection component in another embodiment of the present invention.

[0042] Figure 22 A schematic diagram of the offset measurement component provided in one embodiment of the present invention is shown;

[0043] Figure 23 An exploded view of an offset measurement assembly provided in one embodiment of the present invention is shown;

[0044] Figure 24 A schematic diagram of the offset measurement component and the first detection component provided in one embodiment of the present invention is shown;

[0045] Figure 25 It shows Figure 24 A structural schematic diagram from one perspective of the illustrated embodiment;

[0046] Figure 26 It shows Figure 24 A cross-sectional view from one perspective of the illustrated embodiment;

[0047] Figure 27 A schematic diagram of the structure of a printer provided in one embodiment of the present invention is shown;

[0048] Figure 28 It shows Figure 27 A partially enlarged schematic diagram of point A in the illustrated embodiment.

[0049] in, Figures 1 to 28 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0050] 10 First detection component, 11 First housing, 111 Slide groove, 112 First upper housing, 113 First lower housing, 12 Probe, 121 Step, 122 Light shield, 123 First through hole, 124 Detection rod, 125 First sub-probe, 126 Second sub-probe, 127 Abutting part, 128 Annular groove, 13 First reset part, 131 First sub-reset part, 132 Second sub-reset part, 14 First magnetic suction element, 20 Offset measuring component, 21 Switch part, 211 Button, 212 Ribbon cable interface, 22 Cover plate, 221 First protruding structure, 222 Clearance hole, 23 Pressing part, 231 First end, 232 Second end, 24 Second reset part, 25 First adjusting block, 26 Nut, 27 Adjusting rod, 271 Nut, 272 Rod body, 28 Second adjusting block 281 First connector, 29 Third housing, 291 Third upper housing, 2911 Second through hole, 2912 Third through hole, 292 Third lower housing, 2921 Limiting groove, 2922 Operating port, 30 Second detection assembly, 31 Second housing, 311 Fixing hole, 312 Second front housing, 313 Second rear housing, 314 Mounting cavity, 315 First baffle, 316 Second baffle, 317 Sliding port, 32 Circuit board, 33 Detection section, 331 Light emitter, 332 Light receiver, 333 Groove, 34 Second magnetic chuck, 35 Second connector, 40 Receiving section, 41 Fixing member, 50 Printer, 51 Printing platform, 52 Print head, 53 Guide assembly, 531 X-axis guide frame, 532 Y-axis guide frame, 533 Z-axis guide frame, 54 Base. Detailed Implementation

[0051] To better understand the above-mentioned objectives, features, and advantages of this application, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0052] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0053] The following reference Figures 1 to 28 The present application describes a leveling device and a 3D printer 50 according to some embodiments, wherein the leveling device is applied to the 3D printer 50, which can be a thermoforming 3D printer 50 or other printing equipment that meets the requirements. Specifically, the 3D printer 50 also includes a printing platform 51 and a print head 52, which can eject molten filament onto the printing platform 51 to form a model. The leveling device is used to probe the printing platform 51 of the 3D printer 50 to achieve leveling of the print head 52 assembly.

[0054] Specifically, such as Figure 27 and Figure 28 As shown, the 3D printer 50 includes a printing platform 51, a print head 52, a base 54, and a guide assembly 53. The guide assembly 53 is connected to the base 54. Both the printing platform 51 and the print head 52 are connected to the guide assembly 53. The guide assembly 53 is used to drive the print head 52 assembly and the printing platform 51 to move, so that the leveling device corresponds to a plurality of preset detection points on the printing platform 51 in sequence. The leveling device is used to perform leveling detection at the plurality of detection points respectively.

[0055] The guide assembly 53 includes an X-axis guide frame 531, a Y-axis guide frame 532, and a Z-axis guide frame 533. The printing platform 51 is mounted on the base 54 of the printer 50 via the Y-axis guide frame 532. The Z-axis guide frame 533 is mounted on both sides of the printing platform 51. The two ends of the X-axis guide frame 531 are slidably connected to the Z-axis guide frame 533. The print head 52 is connected to the X-axis guide frame 531 and is mounted above the printing platform 51 via the X-axis and Z-axis guide frames 533. During printing, the guide assembly 53 drives the print head 52 and the printing platform 51 to move relative to each other to perform layer-by-layer spraying of printing material. The leveling device is used for leveling detection before printing, aiming to allow the 3D printer 50 to obtain the actual height of the print head 52 when the leveling device contacts the printing platform 51.

[0056] like Figure 1 , Figure 2 , Figure 3 , Figure 11 , Figure 12 and Figure 16 As shown, the leveling device provided in this application embodiment includes: a detection sensor and a receiving portion 40; the detection sensor includes a first detection component 10 and a second detection component 30; the second detection component 30 is selectively adsorbed and connected to the first detection component 10, and the second detection component 30 is used to connect to the print head 52 of the 3D printer 50; the first detection component 10 is used to contact the printing platform 51 of the 3D printer 50 so that the second detection component 30 emits a leveling signal; the receiving portion 40 is disposed on the printing platform 51 or frame of the 3D printer 50, and is used to place the first detection component 10 when the first detection component 10 and the second detection component 30 are separated.

[0057] When leveling detection of the printing platform 51 is required, the guide component 53 can move the print head 52 above the receiving part 40. The second detection component 30 of the detection sensor attracts the first detection component 10. When the first detection component 10 contacts the printing platform 51 and the second detection component 30 sends a leveling signal, the end of the first detection component 10 of the detection sensor is closer to the printing platform 51 than the end of the print head 52. This setting can prevent the end of the print head 52 from hitting the printing platform 51 and being damaged when the detection sensor is leveled. It is understood that the frame may include a guide component 53 and a base 54, that is, the receiving part 40 may be disposed on the guide component 53 and the base 54. Therefore, when the first detection component 10 and the second detection component 30 of the detection sensor are separated, the first detection component 10 may be placed on the receiving part of any one of the printing platform 51 of the 3D printer 50, the guide component 53, and the base 54 of the printer 50. That is, when leveling detection is not required, the first detection component 10 is moved into the receiving part 40 by controlling the print head 52 to move along the first direction, and then the print head 52 is moved along the second direction perpendicular to the first direction to move the second detection component 30 away from the first detection component 10, thereby separating the first detection component 10 and the second detection component 30 of the detection sensor. With this setting, after leveling is completed, only the second detection component 30 is connected to the print head 52, and the first detection component 10 is not connected to the print head 52. Therefore, when the print head 52 is printing the model, the first detection component 10 will not hit the model and obstruct the work of the print head 52. Specifically, the selective adsorption connection between the second detection component 30 and the first detection component 10 can be understood as follows: under the control of the 3D printer 50, the second detection component 30 can be adsorbed and connected with the first detection component 10, or the second detection component 30 can be separated from the first detection component 10. That is, the second detection component 30 and the first detection component 10 can be selectively adsorbed and connected.

[0058] In some embodiments of this application, the 3D printer 50 further includes a main controller. The second detection component 30 of the detection sensor is electrically connected to the main controller. For example, the second detection component 30 is connected to the main control chip. When the first detection component 10 contacts the printing platform 51 of the 3D printer 50, causing the second detection component 30 to emit a leveling signal, the main controller determines that the first detection component 10 has touched the printing platform 51 based on the received leveling signal, and then records the height of the X-axis guide frame 531 or the actual height of the print head 52 at this time to achieve leveling detection.

[0059] In practical use, multiple detection points on the printing platform 51 can be detected through the above steps. Since the distance between the X-axis guide frame 531 or the print head 52 and the printing platform 51 is consistent each time a leveling signal is generated, the flatness of the surface of the printing platform 51 can be obtained, thus obtaining the contour height information of the surface of the printing platform 51. In this way, during the printing process, the height of the print head 52 can be compensated according to the contour height information of the surface of the printing platform 51, ensuring that the print head 52 and the upper surface of the printing platform 51 always maintain a relatively fixed height. This allows the first layer of the printed model to be evenly bonded to the upper surface of the printing platform 51, with strong adhesion, reducing the problems of poor stability and printing distortion caused by model tilting during the model printing process, thereby improving the reliability and accuracy of model printing.

[0060] The second detection component 30 is connected to the print head 52 of the 3D printer 50. This connection can be direct or indirect. For example, the second detection component 30 can be directly mounted on the print head 52, or the second detection component 30 can be mounted on other structures and indirectly connected to the print head 52, maintaining a fixed position with the print head 52. For example, the second detection component 30 can be mounted on the wheel support plate of the print head 52, with the print head 52 and the second detection component 30 located on opposite sides of the wheel support plate, or the second detection component 30 can be mounted on the X-axis guide frame 531.

[0061] In this embodiment, a leveling device is provided on the 3D printer. The leveling device contacts multiple detection points on the printing platform 51 to obtain the contour height information of the printing platform 51. This enables the first layer of the printed model to adhere evenly to the upper surface of the printing platform 51, exhibiting strong adhesion. This reduces instability during the model printing process and minimizes printing distortion caused by model tilting, thereby improving the reliability and accuracy of model printing. Simultaneously, on one hand, when the first detection component 10 and the second detection component 30 of the detection sensor are engaged, the end of the first detection component 10 is closer to the printing platform 51 than the end of the print head 52. This prevents the end of the print head 52 from impacting the printing platform 51 and causing damage during leveling. On the other hand, when leveling is not required, the first detection component 10 is located in the receiving portion 40, meaning only the second detection component 30 is connected to the print head 52, and the first detection component 10 is not connected to the print head 52. Therefore, when the print head 52 is printing the model, the first detection component 10 will not encounter the model and obstruct the operation of the print head 52.

[0062] In some possible implementations provided in this application, such as Figure 6 , Figure 7 and Figure 8As shown, the first detection assembly 10 includes a first housing 11, a probe 12, and a first reset part 13. The first housing 11 has a groove 111 inside, at least part of the probe 12 is located in the groove 111, and the first reset part 13 is sleeved on the probe 12 and located in the groove 111. The probe 12 includes a detection rod 124, and the first reset part 13 is used to apply a thrust to the detection rod 124 extending out of the groove 111.

[0063] Specifically, a portion of the probe 12 is located within the groove 111, and the probe rod 124 passes through the first housing 11 and is located outside the groove 111. The probe rod 124 is used to contact the printing platform 51. The first reset part 13 is a reset spring. The probe 12 includes a step 121 connected to the probe rod 124. The step 121 is located within the groove 111 and abuts against the first housing 11. One end of the first reset part 13 abuts against the first housing 11, and the other end of the first reset part 13 abuts against the step 121 of the probe rod 124. The first reset part 13 is in a compressed state, so that the first reset part 13 is used to apply a thrust to the probe rod 124 extending out of the groove 111. For example, when the probe rod 124 is performing a leveling test, the first reset part 13 is compressed, and the step 121 separates from the first housing 11, causing the probe rod 124 to move deeper into the slide groove 111. After the probe rod 124 completes the test at a certain test point, the force of the first reset part 13 restoring its deformation can push the probe rod 124 to move away from the slide groove 111 and extend it out of the slide groove 111 until the step 121 abuts against the first housing 11. The probe rod 124 then returns to its original position, and the test at the next test point is performed, until all test points are completed. Through the embodiments of this application, since the probe rod 124 can be reset to the same state before each test point is performed, the reliability of the leveling device's test results is improved, and the leveling device is also more convenient for testing.

[0064] The first housing 11 includes a first upper housing 112 and a first lower housing 113. The first upper housing 112 and the first lower housing 113 are detachably connected by a slot and a buckle. This arrangement allows for the disassembly of the first upper housing 112 and the first lower housing 113, enabling the repair or replacement of components such as the probe 12 and the first reset part 13 located within the first housing 11. The operation is simple, convenient, and helps save on maintenance costs. Furthermore, the slot and buckle structure is simple, easy to manufacture, and has low manufacturing costs, making it suitable for widespread application.

[0065] Specifically, such as Figure 7As shown, two latches are provided on the side of the first lower housing 113 facing the first upper housing 112, and a locking block is provided on the first upper housing 112 at the position opposite to the latches. By cooperating with the latches and the locking block, the first housing 11 can be quickly and conveniently assembled and disassembled, making the operation convenient. It is understood that the number of latches can be reasonably set according to the structure and position of the latches, and this application does not make a specific limitation.

[0066] In the above embodiments, such as Figure 3 , Figure 5 , Figure 6 and Figure 7 As shown, the first detection component 10 further includes a first magnetic member 14, which is connected to the first housing 11; the second detection component 30 includes a second housing 31 and a second magnetic member 34 connected to each other; the first magnetic member 14 is used to attract the second magnetic member 34 so that the first detection component 10 and the second detection component 30 are connected.

[0067] The first magnetic chuck 14 is disposed on the first upper housing 112 of the first housing 11. For example, the top of the first upper housing 112 is provided with a magnetic chuck mounting groove, and the first magnetic chuck 14 is installed in the magnetic chuck mounting groove. The second magnetic chuck 34 of the second detection assembly 30 is installed at the bottom of the second housing 31. Thus, when the first detection assembly 10 and the second detection assembly 30 are separated, the guide assembly 53 drives the print head 52 to move, so that the second magnetic chuck 34 of the second detection assembly 30 moves to the top of the receiving part 40 and aligns with the first magnetic chuck 14 of the first detection assembly 10. The second magnetic chuck 34 attracts the first magnetic chuck 14 to connect the second detection assembly 30 with the first detection assembly 10. By reasonably adjusting the movement state of the guide assembly 53, the print head 52 can be moved in a suitable direction to make the first detection assembly 10 detach from the receiving part 40.

[0068] Specifically, there are two first magnetic suction members 14, which are distributed at opposite ends of the top of the first upper housing 112. Correspondingly, there are also two second magnetic suction members 34, which are distributed opposite each other on the second housing 31. The magnetic connection between the two first magnetic suction members 14 and the two second magnetic suction members 34 improves the reliability and stability of the magnetic connection between the first detection component 10 and the second detection component 30. Specifically, the first magnetic suction members 14 can be installed on the first housing 11 by means of bonding, snap-fitting, etc., and the second magnetic suction members 34 can be installed on the second housing 31 by means of bonding, snap-fitting, etc.

[0069] like Figure 22As shown, the receiving portion 40 has fixing members 41 on both sides corresponding to the two first magnetic suction members 14. The fixing members 41 are used to fix the receiving portion 40 to the printing platform 51 or frame of the 3D printer 50. It is understood that the fixing members 41 include magnetic material to ensure that when the first detection component 10 is located in the receiving portion 40, it can be reliably and stably placed inside the receiving portion 40 by being attracted and connected to the fixing members 41 through the first magnetic suction members 14. The fixing members 41 can be screws or other magnetic structures that meet the requirements, such as... Figure 9 As shown, the fixing member 41 is a screw, and two screws are installed in the grooves on both sides of the receiving part 40, corresponding to the two first magnetic suction members 14. It can be understood that the attraction force between the first magnetic suction member 14 and the second magnetic suction member 34 is greater than the attraction force between the first magnetic suction member 14 and the fixing member 41, so as to prevent the attraction force between the first magnetic suction member 14 and the fixing member 41 from being too large, so that the second detection component 30 cannot take the first detection component 10 away from the receiving part 40.

[0070] Among them, such as Figure 1 and Figure 4 As shown, the second housing 31 is also provided with a fixing hole 311. The second detection component 30 can be connected to the print head 52 through the fixing hole 311. If the fixing hole 311 is located on the side wall of the second housing 31, the fixing hole 311 is a through hole, and the print head 52 is provided with a threaded hole, the second detection component 30 can be fixed on the print head 52 by connecting the bolt through the through hole of the second housing 31 and the threaded hole of the print head 52. This ensures that the bottom of the second detection component 30 is not obstructed, so as to install the second magnetic suction component 34 and facilitate magnetic connection with the first detection component 10.

[0071] In the above embodiments, such as Figure 22 As shown, the receiving part 40 is provided with an upward-opening receiving groove. When the first detection component 10 and the second detection component 30 are separated, the first detection component 10 is placed in the receiving part 40. When leveling detection is required, the guide component 53 can drive the print head 52 connected to the second detection component 30 to move along the first direction, so that the second detection component 30 is directly above the first detection component 10. Then, the print head 52 is driven downward, and the second detection component 30 gradually approaches the first detection component 10, so that the second detection component 30 and the first detection component 10 can be attracted and connected. Then, the guide component 53 drives the print head 52 in the opposite direction to the first direction, so that the first detection component 10 attracted and connected to it can be separated from the receiving groove of the receiving part 40 by the second detection component 30.

[0072] When the leveling test is completed and the first detection component 10 needs to be placed in the receiving slot of the receiving part 40, the guide component 53 can drive the print head 52, which is connected to the first detection component 10 and the second detection component 30, to move along the first direction, moving the first detection component 10 directly above the receiving slot. Then, the print head 52 is moved downward so that the first detection component 10 is received in the receiving slot. Then, the guide component 53 drives the print head 52 to move the second detection component 30 along the second direction perpendicular to the first direction. In this way, the first detection component 10 will be confined in the receiving slot and separated from the second detection component 30, thereby realizing the separate placement of the first detection component 10 and the second detection component 30. Moreover, this process does not require the user to manually operate the first detection component 10 and the second detection component 30, simplifying manual labor, improving the automation level of the leveling device, and making it suitable for widespread application.

[0073] In some possible implementations provided in this application, such as Figure 8 , Figure 9 , Figure 10 As shown, the probe 12 also includes a light-shielding part 122 and a first through hole 123. The first through hole 123 is formed on the light-shielding part 122. That is, any solid part of the probe 12 that can achieve the light-shielding function without the first through hole 123 can be called the light-shielding part 122. The light-shielding part 122 and the first through hole 123 are located at the first end 231 of the first housing 11, and the probe rod 124 is located at the second end 232 of the first housing 11. The first end 231 and the second end 232 are the two opposite ends of the first housing 11. For example, the light-shielding part 122 and the first through hole 123 of the probe 12 are located at the top of the first housing 11, and the probe rod 124 of the probe 12 is located at the bottom of the first housing 11. The light-shielding part 122 is located on the side of the first through hole 123 away from the probe rod 124. For example, the probe rod 124 is located at the bottom of the probe 12, and the light-shielding part 122 is located at the top of the probe 12. The second detection component 30 also includes a detection unit 33, which is connected to the second housing 31. The detection unit 33 includes a light emitter 331, a light receiver 332, and a groove 333. The light emitter 331 and the light receiver 332 are respectively disposed on opposite sides of the groove 333. For example, the detection unit 33 is a photoelectric sensor.

[0074] When the first magnetic member 14 and the second magnetic member 34 are magnetically connected, the light-shielding part 122 and the first through hole 123 are movably disposed in the groove 333 of the detection part 33. When the probe 12 is in a free state, that is, when the probe rod 124 of the probe 12 is not subjected to external force, the light-shielding part 122 of the probe 12 is located between the light emitter 331 and the light receiver 332, so that the light emitter 331 and the light receiver 332 are isolated, that is, the light receiver 332 cannot receive the light signal of the light emitter 331. When the probe rod 124 of the probe 12 is subjected to an external force, such as when the probe rod 124 contacts the printing platform 51, the probe rod 124 moves in the direction of insertion into the slide groove 111, causing the light-shielding part 122 to move upward, so that the first through hole 123 moves between the light emitter 331 and the light receiver 332. The light signal of the light emitter 331 can be transmitted to the light receiver 332 through the first through hole 123, and the signal of the light receiver 332 changes, thereby enabling the emission of a leveling signal.

[0075] like Figure 9 and Figure 10 As shown, the second detection component 30 is also provided with a circuit board 32, which has an interface. The detection unit 33 is electrically connected to the interface, and the leveling signal of the detection unit 33 is transmitted through the interface of the circuit board 32. It can be understood that the interface of the circuit board 32 is electrically connected to the main controller of the printer 50, and thus the leveling signal can be transmitted to the main controller of the printer 50 through the interface. Specifically, the detection unit 33 is mounted on the circuit board 32, and the circuit board 32 is mounted on the second housing 31 via a second connector 35, such as a screw.

[0076] In a specific example provided in this application, probe 12 can be a one-piece structure, such as... Figure 3 , Figure 8 and Figure 10 As shown, the probe 12's probe rod 124, light-shielding part 122, and first through hole 123 are an integral structure. The first through hole 123 is located on both sides of the light-shielding part 122 and probe rod 124. In the initial state, the light-shielding part 122 and the first through hole 123 are exposed to the outside of the first housing 11. When the print head 52 moves the second detection assembly 30 to adsorb the first detection group 10 pieces, the light-shielding part 122 and the first through hole 123 of the probe 12 are movably disposed in the groove 333 of the detection part 33.

[0077] In another specific example provided in this application, such as Figure 11 , Figure 12 , Figure 13 , Figure 16 and Figure 17As shown, probe 12 has a split structure. Probe 12 includes a first sub-probe 125 and a second sub-probe 126. The first sub-probe 125 includes a probe rod 124. At least part of the first sub-probe 125 is located inside the first housing 11, that is, at least part of the probe rod 124 is located inside the slide groove 111. The second sub-probe 126 includes a light-shielding part 122, a first through hole 123, and an abutting part 127 located inside the second housing 31. The light-shielding part 122 is connected to the abutting part 127. The first through hole 123 is opened on the light-shielding part 122. If the light-shielding part 122 is actually a rod, the solid part of the rod without the first through hole 123 can achieve the light-shielding function, and can be called the light-shielding part 122. Specifically, the first through hole 123 and the abutment portion 127 are located at opposite ends of the light-shielding portion 122. For example, the abutment portion 127 is connected to the bottom end of the light-shielding portion 122, and the first through hole 123 is opened at the end of the light-shielding portion 122 away from the abutment portion 127. For example, the first through hole 123 is located at the top end of the light-shielding portion 122 and has a small distance from the top end. When the first magnetic member 14 and the second magnetic member 34 are attracted, the detection rod 124 is correspondingly arranged with the abutment portion 127. The detection rod 124 is used to push the abutment portion 127 so that the light-shielding portion 122 and the first through hole 123 move within the groove 333 of the detection portion 33.

[0078] Specifically, the first magnetic suction member 14 is sleeved outside the first housing 11, and the second magnetic suction member 34 is sleeved outside the abutment portion 127 and located inside the second housing 31; the first reset portion 13 includes a first sub-reset portion 131 and a second sub-reset portion 132. The first sub-reset portion 131 is sleeved on the detection rod 124 and is used to apply a pushing force to the detection rod 124 extending out of the slide groove 111; the second sub-reset portion 132 is sleeved on the light-shielding portion 122 and abuts against the abutment portion 127 and is used to apply a pushing force to the abutment portion 127 extending out of the second housing 31; when the first magnetic suction member 14 and the second magnetic suction member 34 are separated, at least part of the abutment portion 127 extends out of the second housing 31.

[0079] Among them, such as Figure 16 , Figure 17 , Figure 18As shown, the first housing 11 of the first detection assembly 10 can be detachably connected to the first upper housing 112 and the first lower housing 113 to facilitate the maintenance and replacement of components such as the probe 12 of the first sub-probe 125 located inside the first housing 11. For example, the first upper housing 112 and the first lower housing 113 are detachably connected by a hook and a slot. Specifically, the first upper housing 112 can be a snap cap, and the outer wall of the first lower housing 113 is provided with a slot. The snap cap is detachably snapped onto the first lower housing 113 through the slot. A sliding groove 111 is provided inside the first housing 11, which passes through the first upper housing 112 and the first lower housing 113. The probe rod 124 of the first sub-probe 125 is slidably disposed in the sliding groove 111 so that the probe rod 124 can extend out of the first upper housing 112 and / or the first lower housing 113. A step 121 is provided on the periphery of the probe rod 124, and the step 121 matches the partial shape of the first lower housing 113. The first reset part 13 includes a first sub-reset part 131 located inside the first housing 11. The first sub-reset part 131 is sleeved on the periphery of the probe rod 124 and compressed between the first upper housing and the step 121. The first sub-reset part 131 is used to apply a thrust away from the slide groove 111 to the probe rod 124.

[0080] In the above embodiments, such as Figure 16 and Figure 18 As shown, when the first detection component 10 is in its initial state, i.e., when the first magnetic suction member 14 is separated from the second magnetic suction member 34, the top end of the detection rod 124 does not protrude beyond the first upper housing 112. For example, the top end of the detection rod 124 is flush with the top end of the first upper housing 112, or the top end of the detection rod 124 is slightly lower than the top end of the first upper housing 112. The bottom end of the detection rod 124 protrudes beyond the first lower housing 113 to ensure that after the first detection component 10 is attracted away from the receiving part by the second detection component 30, the bottom end of the detection rod 124 can smoothly contact external objects such as the printing platform 51. Figure 20 As shown, when the first detection component 10 is in the leveling state, that is, when the first magnetic suction member 14 and the second magnetic suction member 34 are attracted, the detection rod 124 abuts against the printing platform. The detection rod 124 extends out from the first upper housing 112 and pushes the abutment part 127 to move, so that the light-shielding part 122 and the first through hole 123 move in the groove of the detection part 33.

[0081] In this embodiment, the probe 12 is configured as a split unit. The first sub-probe 125 is disposed within the first housing 11, and the second sub-probe 126 is disposed within the second housing 31. Since the light-shielding part 122 and the first through hole 123 are disposed on the second sub-probe 126, the predetermined positions of the light-shielding part 122 and the first through hole 123 with the groove 333 of the detection part 33 can be pre-set to ensure that the detection part 33 can accurately detect the state of the probe during the leveling detection process, making the detection results of the leveling device more accurate and reliable. The structure of the detection part 33 is as follows: Figure 15 As shown.

[0082] Among them, such as Figure 12 , Figure 13 , Figure 14 As shown, the second housing 31 of the second detection assembly 30 can be detachably connected from the second front housing 312 and the second rear housing 313 to facilitate the maintenance or replacement of components such as the second sub-probe 126 and the detection unit 33 located within the second housing 31. For example, the second front housing 312 and the second rear housing 313 can be detachably connected by a structure such as a hook or latch. The second front housing 312 and the second rear housing 313 together form a mounting cavity 314. The bottom of the mounting cavity 314 is provided with a sliding opening 317 that penetrates the bottom of the second housing 31. A portion of the probe 12 of the second sub-probe 126 is movably disposed within the mounting cavity 314 through the sliding opening 317, while the other portion protrudes from the sliding opening 317 and is located outside the second housing 31.

[0083] Specifically, such as Figure 13 , Figure 14 , Figure 15 and Figure 19 As shown, the inner wall of the mounting cavity 314 of the second housing 31 is provided with a first baffle 315 and a second baffle 316. The first baffle 315 is located below the second baffle 316. The second magnetic suction member 34 is sleeved around the abutment portion 127 of the probe 12 of the second sub-probe 126 and is located between the inner bottom wall of the mounting cavity 314 and the first baffle 315. It can be understood that the second sub-probe 126 of the probe 12 is movable relative to the second magnetic suction member 34. Part of the abutment portion 127 protrudes outside the sliding opening 317. An annular groove 128 is formed along the periphery of the shielding part 122 at one end of the abutting part 127 near the shielding part 122. The second sub-reset part 132 is sleeved in the annular groove 128 and abuts against the bottom of the annular groove 128 and between the second baffle 316. The second sub-reset part 132 is used to apply a pushing force away from the sliding opening 317 to the abutting part 127 so that when the second detection component 30 is in the initial state, that is, when it is not connected to the first detection component 10, the light shielding part 122 of the second sub-probe 126 is located below the light emitter 331 and the light receiver 332 of the detection part, that is, the light emitter 331 can receive the signal of the light receiver 332.

[0084] Therefore, as Figure 20 As shown, when the first magnetic suction member 14 and the second magnetic suction member 34 are magnetically connected, the bottom of the first upper housing 112 and the second housing 31 come into contact. The first sub-probe 125 and the second sub-probe 126 are positioned opposite each other. The contact portion 127 moves upward under the action of the first sub-probe 125, thereby placing the light-shielding portion 122 of the second sub-probe 126 between the light emitter 331 and the light receiver 332. The light emitter 331 and the light receiver 332 are separated, meaning that the light receiver 332 cannot receive the light signal from the light emitter 331. It can be understood that during this process, the first sub-probe 125 is not subjected to external force, that is, the probe rod 124 of the probe 12 does not come into contact with the printing platform 51 or other components.

[0085] like Figure 21 As shown, when the probe rod 124 of the probe 12 is subjected to an external force, such as when the probe rod 124 contacts the printing platform 51, the probe rod 124 moves in the direction of insertion into the slide groove 111, causing the contact part 127 and the light-shielding part 122 to move upward synchronously, so that the first through hole 123 moves between the light emitter 331 and the light receiver 332. The light signal of the light emitter 331 can be transmitted to the light receiver 332 through the first through hole 123, and the signal of the light receiver 332 changes, thereby enabling the emission of a leveling signal.

[0086] In the above embodiment, by setting the probe 12 as a split first sub-probe 125 and second sub-probe 126, the first sub-probe 125 is movably disposed on the first housing 11 and the second sub-probe 126 is movably disposed on the second housing 31. The probe 12 located in the second housing can be initially positioned in the groove 333 of the detection part 33 and below the light emitter 331. This means that during the leveling detection process, the second sub-probe 126 does not need to be re-aligned with the detection part 33. The second sub-probe 126 can move along the groove 333 of the detection part 33 under the push of the first sub-probe 125. This simplifies the step of aligning the probe 12 with the groove 333 of the detection part 33, making the operation convenient and improving the convenience and accuracy of the leveling detection.

[0087] In some possible implementations provided in this application, such as Figure 22 , Figure 23 , Figure 24 Figure 25 and Figure 26As shown, the leveling device also includes an offset measuring component 20, which is disposed on the printing platform 51 or frame of the 3D printer 50 and connected to the receiving part 40. The offset measuring component 20 is used to contact the print head 52 or the detection sensor of the 3D printer 50 to measure the deviation value between the print head 52 and the detection sensor.

[0088] The frame may include a guide component 53 and a base 54 for the printer 50. The offset measuring component 20 can be mounted on at least one of the printing platform 51, guide component 53, and base 54, and connected to the receiving portion 40. In this configuration, the offset measuring component 20 and the receiving portion 40 are adjacent to each other. When measuring the deviation between the print head 52 and the detection sensor, the print head 52 is first driven to contact the offset measuring component 50 to record first data. Then, the print head 52 is driven to cause the second detection component 30 to adhere to the first detection component 10 in the receiving portion 40, controlling the first detection component 10 to contact the offset measuring component 50 to record second data. Finally, the deviation value is calculated based on the first and second data. In this embodiment, the offset measuring component 20 and the receiving portion 40 are adjacent, resulting in a shorter travel distance for the print head 52. Since there is still a certain distance between the nozzle of the print head 52 and the print platform 51 when the detection sensor is performing leveling detection and the second detection component 30 sends a leveling signal, the offset measurement component 20 measures the deviation value between the first detection component 10 and the nozzle. Based on this deviation value, the distance between the nozzle and the print platform 51 can be adjusted to ensure that the first layer of the model can better adhere to the surface of the print platform 51 and have a stronger adhesion when printing the model.

[0089] By setting an offset measurement component 20 on the 3D printer, the deviation value between the detection sensor and the nozzle of the print head 52 is calculated. Then, the distance between the nozzle and the printing platform 51 is adjusted according to this deviation value. This ensures that the first layer of the model can better adhere to the surface of the printing platform 51 during printing, resulting in stronger adhesion and improved printing quality. At the same time, compared with the leveling device in related technologies that requires manual input of compensation values ​​to adjust the distance between the print head nozzle and the printing platform, this method eliminates the step of manually adjusting the distance between the nozzle and the printing platform 51 after leveling, achieving fully automatic printing. Moreover, the adjustment accuracy is higher, improving the automation level of the leveling device.

[0090] In related technologies, the compensation value requires user input after each leveling adjustment. For users unfamiliar with printers, this can easily lead to inputting excessively large compensation values, causing the nozzles to rub against the printing platform, or requiring repeated input of compensation values ​​to correct the appropriate distance between the printhead nozzles and the printing platform, potentially damaging the printer or increasing manual labor. This application, through the offset measurement component 20, solves the leveling detection problem while automatically measuring the deviation between the printhead 52 nozzles and the first detection component 10. Based on the deviation value, a correct compensation value can be calculated, allowing the guide component 53 to automatically adjust the distance between the printhead 52 nozzles and the printing platform 51. This improves the intelligence of the leveling device, eliminates the need for manual input of compensation values, simplifies user operation, and enhances the accuracy, reliability, and speed of adjusting the distance between the printhead 52 nozzles and the printing platform 51. Furthermore, it extends the lifespan of the printer 50 and is suitable for widespread application.

[0091] In the above embodiments, such as Figure 22 , Figure 23 and Figure 26 As shown, the offset measuring assembly 20 includes a pressing part 23, a switching part 21, a second reset part 24, and a third housing 29. At least part of the pressing part 23, the switching part 21, and the second reset part 24 are located inside the third housing 29. The first end 231 of the pressing part 23 extends out of the third housing 29 and is used to contact the print head 52 or the first detection assembly 10. The second end 232 of the pressing part 23 abuts against the switching part 21 and is used to press the switching part 21. The second reset part 24 is sleeved on the pressing part 23 and is used to apply a pushing force close to the switching part 21 to the pressing part 23.

[0092] In the above embodiments, it can be understood that the switching unit 21 is a triggerable switching circuit. For example... Figure 11 and Figure 12 As shown, in one embodiment of this application, the switch unit 21 includes a button 211 and a ribbon cable interface 212. The button 211 is electrically connected to the ribbon cable interface 212, and the button 211 abuts against the pressing part 23. When the button 211 is pressed by the pressing part 23, the button 211 and the ribbon cable interface 212 are connected. It can be understood that the ribbon cable interface 212 is electrically connected to the main controller of the printer 50, and thus the signal triggered by the button 211 can be transmitted to the main controller of the printer 50 through the ribbon cable interface 212.

[0093] When the pressing part 23 is pressed to trigger the switch part 21, the button 211 is pressed to move the pressing part 23 toward the third housing 29; when the force on the pressing part 23 is removed, the force generated by the reset and rebound of the switch part 21 pushes the switch part 21 upward to return to its original position.

[0094] In a specific example, the deviation between the printhead 52 and the first detection component 10 can be measured as follows. First, with the first detection component 10 and the second detection component 30 separated, i.e., when the first detection component 10 is located inside the receiving part 40, the guide component 53 can be used to move the printhead 52 above the pressing part 23. Then, the nozzle of the printhead 52 is moved towards the first end 231 of the pressing part 23 until it abuts against the first end 231 of the pressing part 23. The printhead 52 continues to move until the pressing part 23 presses the button 211 and triggers the button 211 to close. At this time, the signal that the button 211 is triggered can be transmitted to the main controller of the printer 50 through the ribbon cable interface 212. The main controller determines that the button 211 of the switch part 21 is pressed and triggered based on the signal received from the ribbon cable interface 212, and then records the height of the X-axis guide frame 531 or the actual height of the printhead 52 at this time, which is recorded as Z1.

[0095] Next, the guide component 53 drives the print head 52 to move, so that the second probe component 30 is attracted and connected to the first probe component 10. Then, the first probe component 10 is moved above the pressing part 23, and the probe 12 is moved towards the first end 231 of the pressing part 23 until it abuts against the first end 231 of the pressing part 23, and the print head 52 continues to move. In this embodiment, the force exerted by the probe rod 124 to overcome the movement of the first reset part 13 toward the first housing 11 to cause the second detection component 30 to emit a leveling signal is less than the pressing force of the probe rod 124 to trigger the button 211. Therefore, as the print head 52 drives the probe 12 to continue approaching the pressing part 23, the probe rod 124 of the probe 12 will be subjected to an external force to move upward, causing the light-shielding part 122 between the light emitter 331 and the light receiver 332 located in the groove 333 of the detection part 33 to move upward, so that the first through hole 123 is located between the light emitter 331 and the light receiver 332, thereby enabling the detection part 33 to emit a leveling signal, and the button 211 is not triggered. The main controller determines that the probe 12 is in contact with the pressing part 23 based on the received leveling signal, and then records the height of the X-axis guide frame 531 or the actual height of the print head 52 at this time, which is recorded as Z2.

[0096] Therefore, the deviation value P between the printhead 52 and the first detection component 10 can be determined based on Z1 and Z2, such as P = Z1 - Z2. P can be understood as the distance difference between the bottom end of the nozzle of the printhead 52 and the bottom end of the probe 12, which is adsorbed and connected to the second detection component 30 and is in a free state. Based on this distance difference, a compensation value can be determined to increase the distance between the nozzle of the printhead 52 and the printing platform 51. In the above embodiment, when the detection sensor contacts the first end 231 of the pressing part 23 to record the height of the X-axis guide frame 531 or the actual height of the print head 52, the button 211 will not be triggered to close. However, when the print head 52 contacts the first end 231 of the pressing part 23 to record the height of the X-axis guide frame 531 or the actual height of the print head 52, the button 211 will be triggered to close. Therefore, the recorded data Z1 and Z2 introduce the error of the moving distance of the pressing part 23. The moving distance of the pressing part 23 is defined as the deviation P1 of the pressing part 23. In order to ensure the accuracy of the deviation value between the print head 52 and the first detection component 10, the deviation P1 of the pressing part 23 can be included in the calculation process of the deviation value between the print head 52 and the first detection component 10, that is, the deviation value P of the print head 52 and the first detection component 10 is P = Z1 - Z2 + P1, and this data is stored in the main controller of the printer 50.

[0097] In another specific example, the force exerted by the probe rod 124 to overcome the movement of the first reset part 13 toward the first housing 11 to cause the second probe component 30 to emit a leveling signal is greater than the pressing force of the probe rod 124 triggering the button 211. The deviation between the print head 52 and the first probe component 10 can be measured in the following manner. First, as in the first step of the specific example above, with the first probe component 10 and the second probe component 30 separated, the guide component 53 drives the nozzle of the print head 52 to press the pressing part 23 until the pressing part 23 presses the button 211 and triggers the button 211 to act. The main controller of the printer 50 records the height of the X-axis guide frame 531 or the actual height of the print head 52 at this time, which is recorded as Z1.

[0098] Secondly, the guide assembly 53 drives the print head 52 to move, causing the second detection assembly 30 to be magnetically connected to the first detection assembly 10. Then, the first detection assembly 10 is moved above the pressing part 23, and the probe 12 is moved towards the first end 231 of the pressing part 23 until it abuts against the first end 231 of the pressing part 23, and the print head 52 continues to move. In this case, since the force of the probe rod 124 overcoming the first reset part 13 to move towards the first housing 11 to make the second detection assembly 30 emit a leveling signal is greater than the pressing force of the probe rod 124 triggering the button 211, as the print head 52 drives the probe 12 to continue to approach the pressing part 23, the probe rod 124 will cause the pressing part 23 to close the trigger button 211, and the second detection assembly 30 will fail to emit a leveling signal. At this time, the main controller determines that the button 211 of the switch part 21 is pressed and triggered based on the signal received from the ribbon cable interface 212, and then records the height of the X-axis guide frame 531 or the actual height of the print head 52 at this time, which is recorded as Z2.

[0099] Therefore, the deviation value P between the print head 52 and the first detection component 10 can be determined based on Z1 and Z2, i.e., P = Z1 - Z2. It is understood that in this case, when the detection sensor contacts the first end 231 of the pressing part 23 to record the height of the X-axis guide frame 531 or the actual height of the print head 52, the button 211 is triggered to close. Similarly, when the print head 52 contacts the first end 231 of the pressing part 23 to record the height of the X-axis guide frame 531 or the actual height of the print head 52, the button 211 is also triggered to close. This eliminates the deviation P1 of the moving distance of the pressing part 23, ensuring that the deviation of the pressing part 23 does not affect the determination of the deviation value P between the print head 52 and the first detection component 10, further improving the accuracy of determining the deviation value between the print head 52 and the first detection component 10.

[0100] In the above embodiment, the probe 12 of the leveling device contacts the printing platform 51 to obtain the contour information of the printing platform 51, and obtains the height of the X-axis guide frame 531 or the actual height of the print head 52 at the corresponding detection point. For example, assuming that the height of the X-axis guide frame 531 or the actual height of the print head 52 is Zr when the probe 12 is triggered at any detection point, then in order to make the distance between the print head 52 and the printing platform equal to the material thickness m of the first layer of the printed model, the coordinate of the print head 52 when printing the first layer is Z, Z = Zr - P + m. This formula is stored in the main controller of the printer 50, so that the printer 50 can achieve automatic leveling and adjust the print head 52 to a suitable position with the printing platform 51 before printing to print the first layer of material. This ensures that the first layer of the printed product adheres to the surface of the printing platform 51 and is evenly bonded to the printing platform 51, with strong adhesion, reducing the problems of poor stability and printing distortion caused by product tilting during the printing process, thereby improving the reliability and accuracy of product printing. Meanwhile, during the above process, the user only needs to select the leveling button, and the printer 50 can complete the leveling and compensation calculation process automatically through the above steps, reducing manual operation and realizing fully automatic leveling.

[0101] It is understood that the offset measurement component 20 provided in this application can also be used in conjunction with other leveling devices. For example, if the leveling device in this application is a probe-type leveling device, it can still be used in conjunction with proximity-type leveling devices, including proximity sensors.

[0102] In some possible implementations provided in this application, such as Figure 22 , Figure 23 and Figure 26As shown, the offset measuring assembly 20 also includes a first adjusting block 25, a second adjusting block 28, and an adjusting rod 27. Both the first adjusting block 25 and the second adjusting block 28 are located within the third housing 29, with the inclined surface of the second adjusting block 28 fitting against the inclined surface of the first adjusting block 25. The second adjusting block 28 is fixedly connected to the switch part 21, such as by a first connecting member 281 fixed to the second adjusting block 28. Specifically, the first connecting member 281 can be a bolt, such as by bolting the switch part 21 to the top of the second adjusting block 28. The adjusting rod 27 includes a connecting nut 271 and a rod body 272. The nut 271 is located outside the third housing 29, and the rod body 272 passes through the third housing 29 and connects to the first adjusting block 25. By rotating the nut 271, the first adjusting block 25 is moved in the extending direction of the rod 272 to adjust the length of the second adjusting block 28 and the pressing part 23 extending out of the third housing 29. The second reset part 24 is sleeved on the pressing part 23 and is used to apply a pushing force close to the switch part 21 to the pressing part 23, so that the pressing part 23 and the switch part 21 are kept within a reasonable distance. This ensures that the pressing part 23 can trigger the button 211 of the switch part 21 after being pressed a suitable distance, thereby ensuring the accuracy and reliability of the leveling and avoiding gaps between the pressing part 23 and the switch part 21. It is understood that, in order to avoid the second reset part 24 triggering the switch part 21 when the offset measurement of the printhead and the detection sensor is not being performed, the pushing force of the second reset part 24 on the switch part 21 is less than the pressing force when the switch part 21 is triggered.

[0103] The third housing 29 includes a third upper housing 291 and a third lower housing 292. The third upper housing 291 and the third lower housing 292 are detachably connected to facilitate the assembly and maintenance of the offset measuring component 20. For example, after the third upper housing 291 and the third lower housing 292 are disassembled, the pressing part 23, the switch part 21, the second reset part 24, the first adjusting block 25, and the second adjusting block 28 located in the third housing 29 can be repaired or replaced. The operation is convenient and helps to reduce the cost of maintenance and replacement.

[0104] The extension direction of the rod 272 can be horizontal. The third upper housing 291 and the third lower housing 292 are distributed vertically. The side wall of the third lower housing 292 is provided with a limiting groove 2921 and an operation port 2922 that penetrates the limiting groove 2921. The nut 271 of the adjusting rod 27 is located in the limiting groove 2921 and is opposite to the operation port 2922, so that the nut 271 can be operated through the operation port 2922 to adjust the movement of the first adjusting block 25 in the extension direction of the rod 272.

[0105] Among them, such as Figure 25As shown, a nut 26 is provided inside the first adjusting block 25, and a threaded structure is provided on the periphery of the adjusting rod 27. The adjusting rod 27 is inserted into the first adjusting block 25 and connected to the nut 26 to ensure that the rotation of the adjusting rod 27 can drive the first adjusting block 25 to move in the extension direction of the rod body 272.

[0106] In the above embodiments, such as Figures 22 to 26 As shown, the offset measurement component 20 also includes a cover plate 22, a portion of which is located inside the third housing 29, and another portion extends out of the third housing 29 to contact the first detection component 10.

[0107] The cover plate 22 can be located on the side of the switch part 21 away from the second adjusting block 28, such as above the switch part 21 and below the switch part 21. The cover plate 22 is provided with a first protrusion structure 221 and a clearance hole 222. The first protrusion structure 221 passes through the third upper housing 291. For example, the top of the third upper housing 291 is provided with a second through hole 2911. The first protrusion structure 221 passes through the second through hole 2911 and is exposed outside the third housing 291. The clearance hole 222 is used to avoid the button 211 of the switch part 21. The second reset part 24 is sleeved on the outside of the pressing part 23 and compressed between the third upper housing 291 and the cover plate 22. The top of the third upper housing 291 is also provided with a third through hole 2912 for the pressing part 23 to pass through, so as to ensure that part of the pressing part 23 can be exposed outside the third housing 291. In this way, by rotating the nut 271 to move the first adjusting block 25 in the extension direction of the rod 272 to adjust the distance between the second adjusting block 28 and the pressing part 23, the second reset part 24 is compressed between the third upper housing 291 and the cover plate 22, so that the second reset part 24 will exert a certain force on the cover plate 22. This ensures that the pressing part 23 and the switch part 21 are kept within a reasonable distance according to the vertical position of the second adjusting block 28, and ensures that the button 211 of the switch part 21 can be triggered after the pressing part 23 is pressed to a suitable distance, thereby ensuring the accuracy and reliability of the leveling.

[0108] In the above embodiments, the deviation between the print head 52 and the first detection component 10 can also be measured in the following manner.

[0109] First, the guide assembly 53 moves the print head 52, causing the second detection assembly 30 to be attracted and connected to the first detection assembly 10. Then, the first detection assembly 10 is moved above the first protrusion structure 221 of the cover. Then, the probe 12 moves towards the first protrusion structure 221. As the print head 52 moves the probe 12 closer to the pressing part 23, the probe rod 124 of the probe 12 is subjected to an external force and moves upward. This causes the light-shielding part 122 between the light emitter 331 and the light receiver 332 in the groove 333 of the detection part 33 to move upward, so that the first through hole 123 is located between the light emitter 331 and the light receiver 332. This allows the detection part 33 to emit a leveling signal. The main controller determines that the probe 12 is in contact with the pressing part 23 based on the received leveling signal, and then records the height of the X-axis guide frame 531 or the actual height of the print head 52 at this time, which is recorded as D1.

[0110] Secondly, the guide component 53 drives the print head 52 to move, placing the first detection component 10 in the receiving part 40 and separating it from the second detection component 30.

[0111] Next, the guide assembly 53 drives the print head 52 to move above the pressing part 23. Then, the nozzle of the print head 52 moves towards the first end 231 of the pressing part 23 until it abuts against the first end 231 of the pressing part 23. The print head 52 continues to move until the pressing part 23 presses the button 211 and triggers the button 211. At this time, the signal that the button 211 is triggered can be transmitted to the main controller of the printer 50 through the sorting interface. The main controller determines that the button 211 of the switch part 21 is pressed and triggered based on the signal received from the ribbon cable interface 212. Then, it records the height of the X-axis guide frame 531 or the actual height of the print head 52 at this time, and records it as D2.

[0112] Therefore, the deviation value P between the print head 52 and the first probe component 10 can be determined based on D1 and D2, where P = D1 - D2. It is understood that in this case, the height difference P2 between the top of the first protruding structure 221 and the top of the pressing part 23 needs to be considered, as well as the deviation P1 of the moving distance of the pressing part 23. The height difference P2 between the top of the first protruding structure 221 and the top of the pressing part 23 can be a fixed value during structural design, including the case where the top of the first protruding structure 221 is above the top of the pressing part 23, and the case where the top of the first protruding structure 221 is below the pressing part 23.

[0113] An embodiment of the second aspect of this application, such as Figure 27 and Figure 28As shown, a 3D printer 50 is provided, including a leveling device according to any of the first aspects. Since the 3D printer 50 includes the leveling device of any embodiment of the first aspect, it has all the beneficial effects of the leveling device described above, which will not be repeated here.

[0114] This application also provides a 3D printer 50, including the leveling device of any of the foregoing embodiments.

[0115] In the description of this application, the term "multiple" refers to two or more. Unless otherwise expressly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "connection," "installation," "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0116] In the description of this application, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this application, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0117] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A leveling device, characterized in that, The leveling device, used in 3D printers, includes: Detection sensors and housing; The detection sensor includes a first detection component and a second detection component; the second detection component is selectively adsorbed and connected to the first detection component, and the second detection component is used to connect to the print head of the 3D printer; The first detection component is used to contact the printing platform of the 3D printer so that the second detection component emits a leveling signal; A receiving portion is disposed on the printing platform or frame of the 3D printer for placing the first detection component when the first detection component and the second detection component are separated. The first detection assembly includes a first housing, a probe, and a first reset part. The first housing has a groove inside, at least part of the probe is located in the groove, and the first reset part is sleeved on the probe and located in the groove. The probe includes a detection rod, and the first reset part is used to apply a thrust to the detection rod extending out of the groove. The first detection component further includes a first magnetic suction element, which is connected to the first housing. The second detection component includes a second housing and a second magnetic attractor connected to each other, wherein the first magnetic attractor is used to attract the second magnetic attractor to connect the first detection component and the second detection component; The probe also includes a light-shielding part and a first through hole, the first through hole being formed on the light-shielding part, and the light-shielding part and the first through hole being located at the first end of the first housing; The second detection component further includes a detection unit, which is connected to the second housing; The probe includes a first sub-probe and a second sub-probe. The first sub-probe includes the probe rod, at least a portion of which is located within the first housing. The second sub-probe includes the light-shielding part, the first through hole, and the abutting part located within the second housing. The light-shielding part is connected to the abutting part. When the first magnetic attractant and the second magnetic attractant are attracted to each other, the probe rod is correspondingly arranged with the abutment part, and the probe rod is used to push the abutment part so that the light-shielding part and the first through hole move in the groove of the detection part.

2. The leveling device according to claim 1, characterized in that, The probe rod is located at the second end of the first housing, and the first end and the second end are opposite ends of the first housing; The detection unit includes a light emitter, a light receiver, and a groove, wherein the light emitter and the light receiver are respectively disposed on opposite sides of the groove; When the first magnetic attractant and the second magnetic attractant are attracted to each other, the light-shielding part and the first through hole are movably disposed in the groove of the detection part.

3. The leveling device according to claim 2, characterized in that, The first magnetic suction member is sleeved outside the first housing, and the second magnetic suction member is sleeved outside the abutting part and located inside the second housing; The first reset part includes a first sub-reset part and a second sub-reset part. The first sub-reset part is sleeved on the probe rod and is used to apply a thrust to the probe rod extending out of the slide groove. The second sub-reset part is sleeved on the light-shielding part and abuts against the abutting part, and is used to apply a thrust to the abutting part extending out of the second housing. When the first magnetic attractor separates from the second magnetic attractor, at least a portion of the abutting part extends out of the second housing.

4. The leveling device according to claim 1, characterized in that, The leveling device also includes an offset measuring component, which is disposed on the printing platform or frame of the 3D printer and connected to the receiving part; The offset measurement component is used to contact the print head of the 3D printer or the detection sensor to measure the deviation between the print head and the detection sensor.

5. The leveling device according to claim 4, characterized in that, The offset measuring component includes a pressing part, a switching part, a second reset part, and a third housing, with at least a portion of the pressing part, the switching part, and the second reset part located inside the third housing; The first end of the pressing part extends out of the third housing and is used to contact the print head or the first detection component; the second end of the pressing part abuts against the switch part and is used to press the switch part; the second reset part is sleeved on the pressing part and is used to apply a thrust close to the switch part to the pressing part, wherein the thrust of the second reset part on the switch part is less than the pressing force when the switch part is triggered.

6. The leveling device according to claim 5, characterized in that, The switch includes a button and a ribbon cable interface. The button is electrically connected to the ribbon cable interface, and the button abuts against the pressing part. When the button is pressed by the pressing part, the button is connected to the ribbon cable interface.

7. The leveling device according to claim 5, characterized in that, The offset measurement component also includes a first adjustment block and a second adjustment block; Both the first adjusting block and the second adjusting block are located inside the third housing. The inclined surface of the second adjusting block is fitted above the inclined surface of the first adjusting block. The second adjusting block is fixedly connected to the switch part. The adjusting rod includes a connecting nut and a rod body. The nut is located outside the third housing, and the rod body passes through the third housing and is connected to the first adjusting block. By rotating the nut, the first adjusting block is moved in the extension direction of the rod to adjust the distance between the second adjusting block and the pressing part.

8. The leveling device according to claim 6, characterized in that, The offset measurement component also includes a cover plate, a portion of which is located inside the third housing and the other portion extends out of the third housing for contacting the first detection component; The force exerted by the probe rod to overcome the movement of the first reset part toward the first housing so that the second detection component sends a leveling signal is greater than the pressing force of the probe rod to trigger the button.

9. A 3D printer, characterized in that, Includes the leveling device as described in any one of claims 1 to 8.

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